1 files changed, 5206 insertions, 0 deletions

diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
new file mode 100644
index 000000000000..12efbf0fab54
--- /dev/null
+++ b/sound/pci/rme9652/hdsp.c
@@ -0,0 +1,5206 @@
+/*
+ *   ALSA driver for RME Hammerfall DSP audio interface(s)
+ *
+ *      Copyright (c) 2002  Paul Davis
+ *                          Marcus Andersson
+ *                          Thomas Charbonnel
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <sound/driver.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/firmware.h>
+#include <linux/moduleparam.h>
+
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/pcm.h>
+#include <sound/info.h>
+#include <sound/asoundef.h>
+#include <sound/rawmidi.h>
+#include <sound/hwdep.h>
+#include <sound/initval.h>
+#include <sound/hdsp.h>
+
+#include <asm/byteorder.h>
+#include <asm/current.h>
+#include <asm/io.h>
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for RME Hammerfall DSP interface.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for RME Hammerfall DSP interface.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable/disable specific Hammerfall DSP soundcards.");
+MODULE_AUTHOR("Paul Davis <paul@linuxaudiosystems.com>, Marcus Andersson, Thomas Charbonnel <thomas@undata.org>");
+MODULE_DESCRIPTION("RME Hammerfall DSP");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{RME Hammerfall-DSP},"
+                "{RME HDSP-9652},"
+                "{RME HDSP-9632}}");
+
+#define HDSP_MAX_CHANNELS        26
+#define HDSP_MAX_DS_CHANNELS     14
+#define HDSP_MAX_QS_CHANNELS     8
+#define DIGIFACE_SS_CHANNELS     26
+#define DIGIFACE_DS_CHANNELS     14
+#define MULTIFACE_SS_CHANNELS    18
+#define MULTIFACE_DS_CHANNELS    14
+#define H9652_SS_CHANNELS        26
+#define H9652_DS_CHANNELS        14
+/* This does not include possible Analog Extension Boards
+   AEBs are detected at card initialization
+*/
+#define H9632_SS_CHANNELS        12
+#define H9632_DS_CHANNELS        8
+#define H9632_QS_CHANNELS        4
+
+/* Write registers. These are defined as byte-offsets from the iobase value.
+ */
+#define HDSP_resetPointer               0
+#define HDSP_outputBufferAddress        32
+#define HDSP_inputBufferAddress         36
+#define HDSP_controlRegister            64
+#define HDSP_interruptConfirmation      96
+#define HDSP_outputEnable               128
+#define HDSP_control2Reg                256
+#define HDSP_midiDataOut0               352
+#define HDSP_midiDataOut1               356
+#define HDSP_fifoData                   368
+#define HDSP_inputEnable                384
+
+/* Read registers. These are defined as byte-offsets from the iobase value
+ */
+
+#define HDSP_statusRegister    0
+#define HDSP_timecode        128
+#define HDSP_status2Register 192
+#define HDSP_midiDataOut0    352
+#define HDSP_midiDataOut1    356
+#define HDSP_midiDataIn0     360
+#define HDSP_midiDataIn1     364
+#define HDSP_midiStatusOut0  384
+#define HDSP_midiStatusOut1  388
+#define HDSP_midiStatusIn0   392
+#define HDSP_midiStatusIn1   396
+#define HDSP_fifoStatus      400
+
+/* the meters are regular i/o-mapped registers, but offset
+   considerably from the rest. the peak registers are reset
+   when read; the least-significant 4 bits are full-scale counters; 
+   the actual peak value is in the most-significant 24 bits.
+*/
+
+#define HDSP_playbackPeakLevel  4096  /* 26 * 32 bit values */
+#define HDSP_inputPeakLevel     4224  /* 26 * 32 bit values */
+#define HDSP_outputPeakLevel    4352  /* (26+2) * 32 bit values */
+#define HDSP_playbackRmsLevel   4612  /* 26 * 64 bit values */
+#define HDSP_inputRmsLevel      4868  /* 26 * 64 bit values */
+
+
+/* This is for H9652 cards
+   Peak values are read downward from the base
+   Rms values are read upward
+   There are rms values for the outputs too
+   26*3 values are read in ss mode
+   14*3 in ds mode, with no gap between values
+*/
+#define HDSP_9652_peakBase      7164    
+#define HDSP_9652_rmsBase       4096
+
+/* c.f. the hdsp_9632_meters_t struct */
+#define HDSP_9632_metersBase    4096
+
+#define HDSP_IO_EXTENT     7168
+
+/* control2 register bits */
+
+#define HDSP_TMS                0x01
+#define HDSP_TCK                0x02
+#define HDSP_TDI                0x04
+#define HDSP_JTAG               0x08
+#define HDSP_PWDN               0x10
+#define HDSP_PROGRAM            0x020
+#define HDSP_CONFIG_MODE_0      0x040
+#define HDSP_CONFIG_MODE_1      0x080
+#define HDSP_VERSION_BIT        0x100
+#define HDSP_BIGENDIAN_MODE     0x200
+#define HDSP_RD_MULTIPLE        0x400
+#define HDSP_9652_ENABLE_MIXER  0x800
+#define HDSP_TDO                0x10000000
+
+#define HDSP_S_PROGRAM          (HDSP_PROGRAM|HDSP_CONFIG_MODE_0)
+#define HDSP_S_LOAD             (HDSP_PROGRAM|HDSP_CONFIG_MODE_1)
+
+/* Control Register bits */
+
+#define HDSP_Start                (1<<0)  /* start engine */
+#define HDSP_Latency0             (1<<1)  /* buffer size = 2^n where n is defined by Latency{2,1,0} */
+#define HDSP_Latency1             (1<<2)  /* [ see above ] */
+#define HDSP_Latency2             (1<<3)  /* [ see above ] */
+#define HDSP_ClockModeMaster      (1<<4)  /* 1=Master, 0=Slave/Autosync */
+#define HDSP_AudioInterruptEnable (1<<5)  /* what do you think ? */
+#define HDSP_Frequency0           (1<<6)  /* 0=44.1kHz/88.2kHz/176.4kHz 1=48kHz/96kHz/192kHz */
+#define HDSP_Frequency1           (1<<7)  /* 0=32kHz/64kHz/128kHz */
+#define HDSP_DoubleSpeed          (1<<8)  /* 0=normal speed, 1=double speed */
+#define HDSP_SPDIFProfessional    (1<<9)  /* 0=consumer, 1=professional */
+#define HDSP_SPDIFEmphasis        (1<<10) /* 0=none, 1=on */
+#define HDSP_SPDIFNonAudio        (1<<11) /* 0=off, 1=on */
+#define HDSP_SPDIFOpticalOut      (1<<12) /* 1=use 1st ADAT connector for SPDIF, 0=do not */
+#define HDSP_SyncRef2             (1<<13) 
+#define HDSP_SPDIFInputSelect0    (1<<14) 
+#define HDSP_SPDIFInputSelect1    (1<<15) 
+#define HDSP_SyncRef0             (1<<16) 
+#define HDSP_SyncRef1             (1<<17)
+#define HDSP_AnalogExtensionBoard (1<<18) /* For H9632 cards */ 
+#define HDSP_XLRBreakoutCable     (1<<20) /* For H9632 cards */
+#define HDSP_Midi0InterruptEnable (1<<22)
+#define HDSP_Midi1InterruptEnable (1<<23)
+#define HDSP_LineOut              (1<<24)
+#define HDSP_ADGain0              (1<<25) /* From here : H9632 specific */
+#define HDSP_ADGain1              (1<<26)
+#define HDSP_DAGain0              (1<<27)
+#define HDSP_DAGain1              (1<<28)
+#define HDSP_PhoneGain0           (1<<29)
+#define HDSP_PhoneGain1           (1<<30)
+#define HDSP_QuadSpeed            (1<<31)
+
+#define HDSP_ADGainMask       (HDSP_ADGain0|HDSP_ADGain1)
+#define HDSP_ADGainMinus10dBV  HDSP_ADGainMask
+#define HDSP_ADGainPlus4dBu   (HDSP_ADGain0)
+#define HDSP_ADGainLowGain     0
+
+#define HDSP_DAGainMask         (HDSP_DAGain0|HDSP_DAGain1)
+#define HDSP_DAGainHighGain      HDSP_DAGainMask
+#define HDSP_DAGainPlus4dBu     (HDSP_DAGain0)
+#define HDSP_DAGainMinus10dBV    0
+
+#define HDSP_PhoneGainMask      (HDSP_PhoneGain0|HDSP_PhoneGain1)
+#define HDSP_PhoneGain0dB        HDSP_PhoneGainMask
+#define HDSP_PhoneGainMinus6dB  (HDSP_PhoneGain0)
+#define HDSP_PhoneGainMinus12dB  0
+
+#define HDSP_LatencyMask    (HDSP_Latency0|HDSP_Latency1|HDSP_Latency2)
+#define HDSP_FrequencyMask  (HDSP_Frequency0|HDSP_Frequency1|HDSP_DoubleSpeed|HDSP_QuadSpeed)
+
+#define HDSP_SPDIFInputMask    (HDSP_SPDIFInputSelect0|HDSP_SPDIFInputSelect1)
+#define HDSP_SPDIFInputADAT1    0
+#define HDSP_SPDIFInputCoaxial (HDSP_SPDIFInputSelect0)
+#define HDSP_SPDIFInputCdrom   (HDSP_SPDIFInputSelect1)
+#define HDSP_SPDIFInputAES     (HDSP_SPDIFInputSelect0|HDSP_SPDIFInputSelect1)
+
+#define HDSP_SyncRefMask        (HDSP_SyncRef0|HDSP_SyncRef1|HDSP_SyncRef2)
+#define HDSP_SyncRef_ADAT1       0
+#define HDSP_SyncRef_ADAT2      (HDSP_SyncRef0)
+#define HDSP_SyncRef_ADAT3      (HDSP_SyncRef1)
+#define HDSP_SyncRef_SPDIF      (HDSP_SyncRef0|HDSP_SyncRef1)
+#define HDSP_SyncRef_WORD       (HDSP_SyncRef2)
+#define HDSP_SyncRef_ADAT_SYNC  (HDSP_SyncRef0|HDSP_SyncRef2)
+
+/* Sample Clock Sources */
+
+#define HDSP_CLOCK_SOURCE_AUTOSYNC           0
+#define HDSP_CLOCK_SOURCE_INTERNAL_32KHZ     1
+#define HDSP_CLOCK_SOURCE_INTERNAL_44_1KHZ   2
+#define HDSP_CLOCK_SOURCE_INTERNAL_48KHZ     3
+#define HDSP_CLOCK_SOURCE_INTERNAL_64KHZ     4
+#define HDSP_CLOCK_SOURCE_INTERNAL_88_2KHZ   5
+#define HDSP_CLOCK_SOURCE_INTERNAL_96KHZ     6
+#define HDSP_CLOCK_SOURCE_INTERNAL_128KHZ    7
+#define HDSP_CLOCK_SOURCE_INTERNAL_176_4KHZ  8
+#define HDSP_CLOCK_SOURCE_INTERNAL_192KHZ    9
+
+/* Preferred sync reference choices - used by "pref_sync_ref" control switch */
+
+#define HDSP_SYNC_FROM_WORD      0
+#define HDSP_SYNC_FROM_SPDIF     1
+#define HDSP_SYNC_FROM_ADAT1     2
+#define HDSP_SYNC_FROM_ADAT_SYNC 3
+#define HDSP_SYNC_FROM_ADAT2     4
+#define HDSP_SYNC_FROM_ADAT3     5
+
+/* SyncCheck status */
+
+#define HDSP_SYNC_CHECK_NO_LOCK 0
+#define HDSP_SYNC_CHECK_LOCK    1
+#define HDSP_SYNC_CHECK_SYNC    2
+
+/* AutoSync references - used by "autosync_ref" control switch */
+
+#define HDSP_AUTOSYNC_FROM_WORD      0
+#define HDSP_AUTOSYNC_FROM_ADAT_SYNC 1
+#define HDSP_AUTOSYNC_FROM_SPDIF     2
+#define HDSP_AUTOSYNC_FROM_NONE      3
+#define HDSP_AUTOSYNC_FROM_ADAT1     4
+#define HDSP_AUTOSYNC_FROM_ADAT2     5
+#define HDSP_AUTOSYNC_FROM_ADAT3     6
+
+/* Possible sources of S/PDIF input */
+
+#define HDSP_SPDIFIN_OPTICAL  0 /* optical  (ADAT1) */
+#define HDSP_SPDIFIN_COAXIAL  1 /* coaxial (RCA) */
+#define HDSP_SPDIFIN_INTERNAL 2 /* internal (CDROM) */
+#define HDSP_SPDIFIN_AES      3 /* xlr for H9632 (AES)*/
+
+#define HDSP_Frequency32KHz    HDSP_Frequency0
+#define HDSP_Frequency44_1KHz  HDSP_Frequency1
+#define HDSP_Frequency48KHz    (HDSP_Frequency1|HDSP_Frequency0)
+#define HDSP_Frequency64KHz    (HDSP_DoubleSpeed|HDSP_Frequency0)
+#define HDSP_Frequency88_2KHz  (HDSP_DoubleSpeed|HDSP_Frequency1)
+#define HDSP_Frequency96KHz    (HDSP_DoubleSpeed|HDSP_Frequency1|HDSP_Frequency0)
+/* For H9632 cards */
+#define HDSP_Frequency128KHz   (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency0)
+#define HDSP_Frequency176_4KHz (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency1)
+#define HDSP_Frequency192KHz   (HDSP_QuadSpeed|HDSP_DoubleSpeed|HDSP_Frequency1|HDSP_Frequency0)
+
+#define hdsp_encode_latency(x)       (((x)<<1) & HDSP_LatencyMask)
+#define hdsp_decode_latency(x)       (((x) & HDSP_LatencyMask)>>1)
+
+#define hdsp_encode_spdif_in(x) (((x)&0x3)<<14)
+#define hdsp_decode_spdif_in(x) (((x)>>14)&0x3)
+
+/* Status Register bits */
+
+#define HDSP_audioIRQPending    (1<<0)
+#define HDSP_Lock2              (1<<1)     /* this is for Digiface and H9652 */
+#define HDSP_spdifFrequency3    HDSP_Lock2 /* this is for H9632 only */
+#define HDSP_Lock1              (1<<2)
+#define HDSP_Lock0              (1<<3)
+#define HDSP_SPDIFSync          (1<<4)
+#define HDSP_TimecodeLock       (1<<5)
+#define HDSP_BufferPositionMask 0x000FFC0 /* Bit 6..15 : h/w buffer pointer */
+#define HDSP_Sync2              (1<<16)
+#define HDSP_Sync1              (1<<17)
+#define HDSP_Sync0              (1<<18)
+#define HDSP_DoubleSpeedStatus  (1<<19)
+#define HDSP_ConfigError        (1<<20)
+#define HDSP_DllError           (1<<21)
+#define HDSP_spdifFrequency0    (1<<22)
+#define HDSP_spdifFrequency1    (1<<23)
+#define HDSP_spdifFrequency2    (1<<24)
+#define HDSP_SPDIFErrorFlag     (1<<25)
+#define HDSP_BufferID           (1<<26)
+#define HDSP_TimecodeSync       (1<<27)
+#define HDSP_AEBO               (1<<28) /* H9632 specific Analog Extension Boards */
+#define HDSP_AEBI               (1<<29) /* 0 = present, 1 = absent */
+#define HDSP_midi0IRQPending    (1<<30) 
+#define HDSP_midi1IRQPending    (1<<31)
+
+#define HDSP_spdifFrequencyMask    (HDSP_spdifFrequency0|HDSP_spdifFrequency1|HDSP_spdifFrequency2)
+
+#define HDSP_spdifFrequency32KHz   (HDSP_spdifFrequency0)
+#define HDSP_spdifFrequency44_1KHz (HDSP_spdifFrequency1)
+#define HDSP_spdifFrequency48KHz   (HDSP_spdifFrequency0|HDSP_spdifFrequency1)
+
+#define HDSP_spdifFrequency64KHz   (HDSP_spdifFrequency2)
+#define HDSP_spdifFrequency88_2KHz (HDSP_spdifFrequency0|HDSP_spdifFrequency2)
+#define HDSP_spdifFrequency96KHz   (HDSP_spdifFrequency2|HDSP_spdifFrequency1)
+
+/* This is for H9632 cards */
+#define HDSP_spdifFrequency128KHz   HDSP_spdifFrequencyMask
+#define HDSP_spdifFrequency176_4KHz HDSP_spdifFrequency3
+#define HDSP_spdifFrequency192KHz   (HDSP_spdifFrequency3|HDSP_spdifFrequency0)
+
+/* Status2 Register bits */
+
+#define HDSP_version0     (1<<0)
+#define HDSP_version1     (1<<1)
+#define HDSP_version2     (1<<2)
+#define HDSP_wc_lock      (1<<3)
+#define HDSP_wc_sync      (1<<4)
+#define HDSP_inp_freq0    (1<<5)
+#define HDSP_inp_freq1    (1<<6)
+#define HDSP_inp_freq2    (1<<7)
+#define HDSP_SelSyncRef0  (1<<8)
+#define HDSP_SelSyncRef1  (1<<9)
+#define HDSP_SelSyncRef2  (1<<10)
+
+#define HDSP_wc_valid (HDSP_wc_lock|HDSP_wc_sync)
+
+#define HDSP_systemFrequencyMask (HDSP_inp_freq0|HDSP_inp_freq1|HDSP_inp_freq2)
+#define HDSP_systemFrequency32   (HDSP_inp_freq0)
+#define HDSP_systemFrequency44_1 (HDSP_inp_freq1)
+#define HDSP_systemFrequency48   (HDSP_inp_freq0|HDSP_inp_freq1)
+#define HDSP_systemFrequency64   (HDSP_inp_freq2)
+#define HDSP_systemFrequency88_2 (HDSP_inp_freq0|HDSP_inp_freq2)
+#define HDSP_systemFrequency96   (HDSP_inp_freq1|HDSP_inp_freq2)
+/* FIXME : more values for 9632 cards ? */
+
+#define HDSP_SelSyncRefMask        (HDSP_SelSyncRef0|HDSP_SelSyncRef1|HDSP_SelSyncRef2)
+#define HDSP_SelSyncRef_ADAT1      0
+#define HDSP_SelSyncRef_ADAT2      (HDSP_SelSyncRef0)
+#define HDSP_SelSyncRef_ADAT3      (HDSP_SelSyncRef1)
+#define HDSP_SelSyncRef_SPDIF      (HDSP_SelSyncRef0|HDSP_SelSyncRef1)
+#define HDSP_SelSyncRef_WORD       (HDSP_SelSyncRef2)
+#define HDSP_SelSyncRef_ADAT_SYNC  (HDSP_SelSyncRef0|HDSP_SelSyncRef2)
+
+/* Card state flags */
+
+#define HDSP_InitializationComplete  (1<<0)
+#define HDSP_FirmwareLoaded          (1<<1)
+#define HDSP_FirmwareCached          (1<<2)
+
+/* FIFO wait times, defined in terms of 1/10ths of msecs */
+
+#define HDSP_LONG_WAIT   5000
+#define HDSP_SHORT_WAIT  30
+
+#define UNITY_GAIN                       32768
+#define MINUS_INFINITY_GAIN              0
+
+#ifndef PCI_VENDOR_ID_XILINX
+#define PCI_VENDOR_ID_XILINX            0x10ee
+#endif
+#ifndef PCI_DEVICE_ID_XILINX_HAMMERFALL_DSP
+#define PCI_DEVICE_ID_XILINX_HAMMERFALL_DSP 0x3fc5
+#endif
+
+/* the size of a substream (1 mono data stream) */
+
+#define HDSP_CHANNEL_BUFFER_SAMPLES  (16*1024)
+#define HDSP_CHANNEL_BUFFER_BYTES    (4*HDSP_CHANNEL_BUFFER_SAMPLES)
+
+/* the size of the area we need to allocate for DMA transfers. the
+   size is the same regardless of the number of channels - the 
+   Multiface still uses the same memory area.
+
+   Note that we allocate 1 more channel than is apparently needed
+   because the h/w seems to write 1 byte beyond the end of the last
+   page. Sigh.
+*/
+
+#define HDSP_DMA_AREA_BYTES ((HDSP_MAX_CHANNELS+1) * HDSP_CHANNEL_BUFFER_BYTES)
+#define HDSP_DMA_AREA_KILOBYTES (HDSP_DMA_AREA_BYTES/1024)
+
+/* use hotplug firmeare loader? */
+#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
+#ifndef HDSP_USE_HWDEP_LOADER
+#define HDSP_FW_LOADER
+#endif
+#endif
+
+typedef struct _hdsp             hdsp_t;
+typedef struct _hdsp_midi        hdsp_midi_t;
+typedef struct _hdsp_9632_meters hdsp_9632_meters_t;
+
+struct _hdsp_9632_meters {
+    u32 input_peak[16];
+    u32 playback_peak[16];
+    u32 output_peak[16];
+    u32 xxx_peak[16];
+    u32 padding[64];
+    u32 input_rms_low[16];
+    u32 playback_rms_low[16];
+    u32 output_rms_low[16];
+    u32 xxx_rms_low[16];
+    u32 input_rms_high[16];
+    u32 playback_rms_high[16];
+    u32 output_rms_high[16];
+    u32 xxx_rms_high[16];
+};
+
+struct _hdsp_midi {
+    hdsp_t                  *hdsp;
+    int                      id;
+    snd_rawmidi_t           *rmidi;
+    snd_rawmidi_substream_t *input;
+    snd_rawmidi_substream_t *output;
+    char                     istimer; /* timer in use */
+    struct timer_list        timer;
+    spinlock_t               lock;
+    int                      pending;
+};
+
+struct _hdsp {
+        spinlock_t            lock;
+        snd_pcm_substream_t  *capture_substream;
+        snd_pcm_substream_t  *playback_substream;
+        hdsp_midi_t           midi[2];
+        struct tasklet_struct midi_tasklet;
+        int                   use_midi_tasklet;
+        int                   precise_ptr;
+        u32                   control_register;      /* cached value */
+        u32                   control2_register;     /* cached value */
+        u32                   creg_spdif;
+        u32                   creg_spdif_stream;
+        char                 *card_name;             /* digiface/multiface */
+        HDSP_IO_Type          io_type;               /* ditto, but for code use */
+        unsigned short        firmware_rev;
+        unsigned short        state;                 /* stores state bits */
+        u32                   firmware_cache[24413]; /* this helps recover from accidental iobox power failure */
+        size_t                period_bytes;          /* guess what this is */
+        unsigned char         max_channels;
+        unsigned char         qs_in_channels;        /* quad speed mode for H9632 */
+        unsigned char         ds_in_channels;
+        unsigned char         ss_in_channels;       /* different for multiface/digiface */
+        unsigned char         qs_out_channels;      
+        unsigned char         ds_out_channels;
+        unsigned char         ss_out_channels;
+
+        struct snd_dma_buffer capture_dma_buf;
+        struct snd_dma_buffer playback_dma_buf;
+        unsigned char        *capture_buffer;       /* suitably aligned address */
+        unsigned char        *playback_buffer;      /* suitably aligned address */
+
+        pid_t                 capture_pid;
+        pid_t                 playback_pid;
+        int                   running;
+        int                   system_sample_rate;
+        char                 *channel_map;
+        int                   dev;
+        int                   irq;
+        unsigned long         port;
+        void __iomem         *iobase;
+        snd_card_t           *card;
+        snd_pcm_t            *pcm;
+        snd_hwdep_t          *hwdep;
+        struct pci_dev       *pci;
+        snd_kcontrol_t       *spdif_ctl;
+        unsigned short        mixer_matrix[HDSP_MATRIX_MIXER_SIZE];
+};
+
+/* These tables map the ALSA channels 1..N to the channels that we
+   need to use in order to find the relevant channel buffer. RME
+   refer to this kind of mapping as between "the ADAT channel and
+   the DMA channel." We index it using the logical audio channel,
+   and the value is the DMA channel (i.e. channel buffer number)
+   where the data for that channel can be read/written from/to.
+*/
+
+static char channel_map_df_ss[HDSP_MAX_CHANNELS] = {
+        0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
+        18, 19, 20, 21, 22, 23, 24, 25
+};
+
+static char channel_map_mf_ss[HDSP_MAX_CHANNELS] = { /* Multiface */
+        /* Analog */
+        0, 1, 2, 3, 4, 5, 6, 7, 
+        /* ADAT 2 */
+        16, 17, 18, 19, 20, 21, 22, 23, 
+        /* SPDIF */
+        24, 25,
+        -1, -1, -1, -1, -1, -1, -1, -1
+};
+
+static char channel_map_ds[HDSP_MAX_CHANNELS] = {
+        /* ADAT channels are remapped */
+        1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23,
+        /* channels 12 and 13 are S/PDIF */
+        24, 25,
+        /* others don't exist */
+        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
+};
+
+static char channel_map_H9632_ss[HDSP_MAX_CHANNELS] = {
+        /* ADAT channels */
+        0, 1, 2, 3, 4, 5, 6, 7,
+        /* SPDIF */
+        8, 9,
+        /* Analog */
+        10, 11, 
+        /* AO4S-192 and AI4S-192 extension boards */
+        12, 13, 14, 15,
+        /* others don't exist */
+        -1, -1, -1, -1, -1, -1, -1, -1, 
+        -1, -1
+};
+
+static char channel_map_H9632_ds[HDSP_MAX_CHANNELS] = {
+        /* ADAT */
+        1, 3, 5, 7,
+        /* SPDIF */
+        8, 9,
+        /* Analog */
+        10, 11, 
+        /* AO4S-192 and AI4S-192 extension boards */
+        12, 13, 14, 15,
+        /* others don't exist */
+        -1, -1, -1, -1, -1, -1, -1, -1,
+        -1, -1, -1, -1, -1, -1
+};
+
+static char channel_map_H9632_qs[HDSP_MAX_CHANNELS] = {
+        /* ADAT is disabled in this mode */
+        /* SPDIF */
+        8, 9,
+        /* Analog */
+        10, 11,
+        /* AO4S-192 and AI4S-192 extension boards */
+        12, 13, 14, 15,
+        /* others don't exist */
+        -1, -1, -1, -1, -1, -1, -1, -1,
+        -1, -1, -1, -1, -1, -1, -1, -1,
+        -1, -1
+};
+
+static int snd_hammerfall_get_buffer(struct pci_dev *pci, struct snd_dma_buffer *dmab, size_t size)
+{
+        dmab->dev.type = SNDRV_DMA_TYPE_DEV;
+        dmab->dev.dev = snd_dma_pci_data(pci);
+        if (! snd_dma_get_reserved_buf(dmab, snd_dma_pci_buf_id(pci))) {
+                if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
+                                        size, dmab) < 0)
+                        return -ENOMEM;
+        }
+        return 0;
+}
+
+static void snd_hammerfall_free_buffer(struct snd_dma_buffer *dmab, struct pci_dev *pci)
+{
+        if (dmab->area)
+                snd_dma_reserve_buf(dmab, snd_dma_pci_buf_id(pci));
+}
+
+
+static struct pci_device_id snd_hdsp_ids[] = {
+        {
+                .vendor = PCI_VENDOR_ID_XILINX,
+                .device = PCI_DEVICE_ID_XILINX_HAMMERFALL_DSP, 
+                .subvendor = PCI_ANY_ID,
+                .subdevice = PCI_ANY_ID,
+        }, /* RME Hammerfall-DSP */
+        { 0, },
+};
+
+MODULE_DEVICE_TABLE(pci, snd_hdsp_ids);
+
+/* prototypes */
+static int snd_hdsp_create_alsa_devices(snd_card_t *card, hdsp_t *hdsp);
+static int snd_hdsp_create_pcm(snd_card_t *card, hdsp_t *hdsp);
+static int snd_hdsp_enable_io (hdsp_t *hdsp);
+static void snd_hdsp_initialize_midi_flush (hdsp_t *hdsp);
+static void snd_hdsp_initialize_channels (hdsp_t *hdsp);
+static int hdsp_fifo_wait(hdsp_t *hdsp, int count, int timeout);
+static int hdsp_autosync_ref(hdsp_t *hdsp);
+static int snd_hdsp_set_defaults(hdsp_t *hdsp);
+static void snd_hdsp_9652_enable_mixer (hdsp_t *hdsp);
+
+static int hdsp_playback_to_output_key (hdsp_t *hdsp, int in, int out)
+{
+        switch (hdsp->firmware_rev) {
+        case 0xa:
+                return (64 * out) + (32 + (in));
+        case 0x96:
+        case 0x97:
+                return (32 * out) + (16 + (in));
+        default:
+                return (52 * out) + (26 + (in));
+        }
+}
+
+static int hdsp_input_to_output_key (hdsp_t *hdsp, int in, int out)
+{
+        switch (hdsp->firmware_rev) {
+        case 0xa:
+                return (64 * out) + in;
+        case 0x96:
+        case 0x97:
+                return (32 * out) + in;
+        default:
+                return (52 * out) + in;
+        }
+}
+
+static void hdsp_write(hdsp_t *hdsp, int reg, int val)
+{
+        writel(val, hdsp->iobase + reg);
+}
+
+static unsigned int hdsp_read(hdsp_t *hdsp, int reg)
+{
+        return readl (hdsp->iobase + reg);
+}
+
+static int hdsp_check_for_iobox (hdsp_t *hdsp)
+{
+
+        if (hdsp->io_type == H9652 || hdsp->io_type == H9632) return 0;
+        if (hdsp_read (hdsp, HDSP_statusRegister) & HDSP_ConfigError) {
+                snd_printk ("Hammerfall-DSP: no Digiface or Multiface connected!\n");
+                hdsp->state &= ~HDSP_FirmwareLoaded;
+                return -EIO;
+        }
+        return 0;
+
+}
+
+static int snd_hdsp_load_firmware_from_cache(hdsp_t *hdsp) {
+
+        int i;
+        unsigned long flags;
+
+        if ((hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DllError) != 0) {
+                
+                snd_printk ("Hammerfall-DSP: loading firmware\n");
+
+                hdsp_write (hdsp, HDSP_control2Reg, HDSP_S_PROGRAM);
+                hdsp_write (hdsp, HDSP_fifoData, 0);
+                
+                if (hdsp_fifo_wait (hdsp, 0, HDSP_LONG_WAIT)) {
+                        snd_printk ("Hammerfall-DSP: timeout waiting for download preparation\n");
+                        return -EIO;
+                }
+                
+                hdsp_write (hdsp, HDSP_control2Reg, HDSP_S_LOAD);
+                
+                for (i = 0; i < 24413; ++i) {
+                        hdsp_write(hdsp, HDSP_fifoData, hdsp->firmware_cache[i]);
+                        if (hdsp_fifo_wait (hdsp, 127, HDSP_LONG_WAIT)) {
+                                snd_printk ("Hammerfall-DSP: timeout during firmware loading\n");
+                                return -EIO;
+                        }
+                }
+
+                if ((1000 / HZ) < 3000) {
+                        set_current_state(TASK_UNINTERRUPTIBLE);
+                        schedule_timeout((3000 * HZ + 999) / 1000);
+                } else {
+                        mdelay(3000);
+                }
+                
+                if (hdsp_fifo_wait (hdsp, 0, HDSP_LONG_WAIT)) {
+                        snd_printk ("Hammerfall-DSP: timeout at end of firmware loading\n");
+                        return -EIO;
+                }
+
+#ifdef SNDRV_BIG_ENDIAN
+                hdsp->control2_register = HDSP_BIGENDIAN_MODE;
+#else
+                hdsp->control2_register = 0;
+#endif
+                hdsp_write (hdsp, HDSP_control2Reg, hdsp->control2_register);
+                snd_printk ("Hammerfall-DSP: finished firmware loading\n");
+                
+        }
+        if (hdsp->state & HDSP_InitializationComplete) {
+                snd_printk("Hammerfall-DSP: firmware loaded from cache, restoring defaults\n");
+                spin_lock_irqsave(&hdsp->lock, flags);
+                snd_hdsp_set_defaults(hdsp);
+                spin_unlock_irqrestore(&hdsp->lock, flags); 
+        }
+        
+        hdsp->state |= HDSP_FirmwareLoaded;
+
+        return 0;
+}
+
+static int hdsp_get_iobox_version (hdsp_t *hdsp)
+{
+        if ((hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DllError) != 0) {
+        
+                hdsp_write (hdsp, HDSP_control2Reg, HDSP_PROGRAM);
+                hdsp_write (hdsp, HDSP_fifoData, 0);
+                if (hdsp_fifo_wait (hdsp, 0, HDSP_SHORT_WAIT) < 0) {
+                        return -EIO;
+                }
+
+                hdsp_write (hdsp, HDSP_control2Reg, HDSP_S_LOAD);
+                hdsp_write (hdsp, HDSP_fifoData, 0);
+
+                if (hdsp_fifo_wait (hdsp, 0, HDSP_SHORT_WAIT)) {
+                        hdsp->io_type = Multiface;
+                        hdsp_write (hdsp, HDSP_control2Reg, HDSP_VERSION_BIT);
+                        hdsp_write (hdsp, HDSP_control2Reg, HDSP_S_LOAD);
+                        hdsp_fifo_wait (hdsp, 0, HDSP_SHORT_WAIT);
+                } else {
+                        hdsp->io_type = Digiface;
+                } 
+        } else {
+                /* firmware was already loaded, get iobox type */
+                if (hdsp_read(hdsp, HDSP_status2Register) & HDSP_version1) {
+                        hdsp->io_type = Multiface;
+                } else {
+                        hdsp->io_type = Digiface;
+                }
+        }
+        return 0;
+}
+
+
+static int hdsp_check_for_firmware (hdsp_t *hdsp)
+{
+        if (hdsp->io_type == H9652 || hdsp->io_type == H9632) return 0;
+        if ((hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DllError) != 0) {
+                snd_printk("Hammerfall-DSP: firmware not present.\n");
+                hdsp->state &= ~HDSP_FirmwareLoaded;
+                return -EIO;
+        }
+        return 0;
+}
+
+
+static int hdsp_fifo_wait(hdsp_t *hdsp, int count, int timeout)
+{    
+        int i;
+
+        /* the fifoStatus registers reports on how many words
+           are available in the command FIFO.
+        */
+        
+        for (i = 0; i < timeout; i++) {
+
+                if ((int)(hdsp_read (hdsp, HDSP_fifoStatus) & 0xff) <= count)
+                        return 0;
+
+                /* not very friendly, but we only do this during a firmware
+                   load and changing the mixer, so we just put up with it.
+                */
+
+                udelay (100);
+        }
+
+        snd_printk ("Hammerfall-DSP: wait for FIFO status <= %d failed after %d iterations\n",
+                    count, timeout);
+        return -1;
+}
+
+static int hdsp_read_gain (hdsp_t *hdsp, unsigned int addr)
+{
+        if (addr >= HDSP_MATRIX_MIXER_SIZE) {
+                return 0;
+        }
+        return hdsp->mixer_matrix[addr];
+}
+
+static int hdsp_write_gain(hdsp_t *hdsp, unsigned int addr, unsigned short data)
+{
+        unsigned int ad;
+
+        if (addr >= HDSP_MATRIX_MIXER_SIZE)
+                return -1;
+        
+        if (hdsp->io_type == H9652 || hdsp->io_type == H9632) {
+
+                /* from martin bjornsen:
+                   
+                   "You can only write dwords to the
+                   mixer memory which contain two
+                   mixer values in the low and high
+                   word. So if you want to change
+                   value 0 you have to read value 1
+                   from the cache and write both to
+                   the first dword in the mixer
+                   memory."
+                */
+
+                if (hdsp->io_type == H9632 && addr >= 512) {
+                        return 0;
+                }
+
+                if (hdsp->io_type == H9652 && addr >= 1352) {
+                        return 0;
+                }
+
+                hdsp->mixer_matrix[addr] = data;
+
+                
+                /* `addr' addresses a 16-bit wide address, but
+                   the address space accessed via hdsp_write
+                   uses byte offsets. put another way, addr
+                   varies from 0 to 1351, but to access the
+                   corresponding memory location, we need
+                   to access 0 to 2703 ...
+                */
+                ad = addr/2;
+        
+                hdsp_write (hdsp, 4096 + (ad*4), 
+                            (hdsp->mixer_matrix[(addr&0x7fe)+1] << 16) + 
+                            hdsp->mixer_matrix[addr&0x7fe]);
+                
+                return 0;
+
+        } else {
+
+                ad = (addr << 16) + data;
+                
+                if (hdsp_fifo_wait(hdsp, 127, HDSP_LONG_WAIT)) {
+                        return -1;
+                }
+
+                hdsp_write (hdsp, HDSP_fifoData, ad);
+                hdsp->mixer_matrix[addr] = data;
+
+        }
+
+        return 0;
+}
+
+static int snd_hdsp_use_is_exclusive(hdsp_t *hdsp)
+{
+        unsigned long flags;
+        int ret = 1;
+
+        spin_lock_irqsave(&hdsp->lock, flags);
+        if ((hdsp->playback_pid != hdsp->capture_pid) &&
+            (hdsp->playback_pid >= 0) && (hdsp->capture_pid >= 0)) {
+                ret = 0;
+        }
+        spin_unlock_irqrestore(&hdsp->lock, flags);
+        return ret;
+}
+
+static int hdsp_external_sample_rate (hdsp_t *hdsp)
+{
+        unsigned int status2 = hdsp_read(hdsp, HDSP_status2Register);
+        unsigned int rate_bits = status2 & HDSP_systemFrequencyMask;
+
+        switch (rate_bits) {
+        case HDSP_systemFrequency32:   return 32000;
+        case HDSP_systemFrequency44_1: return 44100;
+        case HDSP_systemFrequency48:   return 48000;
+        case HDSP_systemFrequency64:   return 64000;
+        case HDSP_systemFrequency88_2: return 88200;
+        case HDSP_systemFrequency96:   return 96000;
+        default:
+                return 0;
+        }
+}
+
+static int hdsp_spdif_sample_rate(hdsp_t *hdsp)
+{
+        unsigned int status = hdsp_read(hdsp, HDSP_statusRegister);
+        unsigned int rate_bits = (status & HDSP_spdifFrequencyMask);
+
+        if (status & HDSP_SPDIFErrorFlag) {
+                return 0;
+        }
+        
+        switch (rate_bits) {
+        case HDSP_spdifFrequency32KHz: return 32000;
+        case HDSP_spdifFrequency44_1KHz: return 44100;
+        case HDSP_spdifFrequency48KHz: return 48000;
+        case HDSP_spdifFrequency64KHz: return 64000;
+        case HDSP_spdifFrequency88_2KHz: return 88200;
+        case HDSP_spdifFrequency96KHz: return 96000;
+        case HDSP_spdifFrequency128KHz: 
+                if (hdsp->io_type == H9632) return 128000;
+                break;
+        case HDSP_spdifFrequency176_4KHz: 
+                if (hdsp->io_type == H9632) return 176400;
+                break;
+        case HDSP_spdifFrequency192KHz: 
+                if (hdsp->io_type == H9632) return 192000;
+                break;
+        default:
+                break;
+        }
+        snd_printk ("Hammerfall-DSP: unknown spdif frequency status; bits = 0x%x, status = 0x%x\n", rate_bits, status);
+        return 0;
+}
+
+static void hdsp_compute_period_size(hdsp_t *hdsp)
+{
+        hdsp->period_bytes = 1 << ((hdsp_decode_latency(hdsp->control_register) + 8));
+}
+
+static snd_pcm_uframes_t hdsp_hw_pointer(hdsp_t *hdsp)
+{
+        int position;
+
+        position = hdsp_read(hdsp, HDSP_statusRegister);
+
+        if (!hdsp->precise_ptr) {
+                return (position & HDSP_BufferID) ? (hdsp->period_bytes / 4) : 0;
+        }
+
+        position &= HDSP_BufferPositionMask;
+        position /= 4;
+        position &= (hdsp->period_bytes/2) - 1;
+        return position;
+}
+
+static void hdsp_reset_hw_pointer(hdsp_t *hdsp)
+{
+        hdsp_write (hdsp, HDSP_resetPointer, 0);
+}
+
+static void hdsp_start_audio(hdsp_t *s)
+{
+        s->control_register |= (HDSP_AudioInterruptEnable | HDSP_Start);
+        hdsp_write(s, HDSP_controlRegister, s->control_register);
+}
+
+static void hdsp_stop_audio(hdsp_t *s)
+{
+        s->control_register &= ~(HDSP_Start | HDSP_AudioInterruptEnable);
+        hdsp_write(s, HDSP_controlRegister, s->control_register);
+}
+
+static void hdsp_silence_playback(hdsp_t *hdsp)
+{
+        memset(hdsp->playback_buffer, 0, HDSP_DMA_AREA_BYTES);
+}
+
+static int hdsp_set_interrupt_interval(hdsp_t *s, unsigned int frames)
+{
+        int n;
+
+        spin_lock_irq(&s->lock);
+
+        frames >>= 7;
+        n = 0;
+        while (frames) {
+                n++;
+                frames >>= 1;
+        }
+
+        s->control_register &= ~HDSP_LatencyMask;
+        s->control_register |= hdsp_encode_latency(n);
+
+        hdsp_write(s, HDSP_controlRegister, s->control_register);
+
+        hdsp_compute_period_size(s);
+
+        spin_unlock_irq(&s->lock);
+
+        return 0;
+}
+
+static int hdsp_set_rate(hdsp_t *hdsp, int rate, int called_internally)
+{
+        int reject_if_open = 0;
+        int current_rate;
+        int rate_bits;
+
+        /* ASSUMPTION: hdsp->lock is either held, or
+           there is no need for it (e.g. during module
+           initialization).
+        */
+        
+        if (!(hdsp->control_register & HDSP_ClockModeMaster)) { 
+                if (called_internally) {
+                        /* request from ctl or card initialization */
+                        snd_printk("Hammerfall-DSP: device is not running as a clock master: cannot set sample rate.\n");
+                        return -1;
+                } else {                
+                        /* hw_param request while in AutoSync mode */
+                        int external_freq = hdsp_external_sample_rate(hdsp);
+                        int spdif_freq = hdsp_spdif_sample_rate(hdsp);
+                
+                        if ((spdif_freq == external_freq*2) && (hdsp_autosync_ref(hdsp) >= HDSP_AUTOSYNC_FROM_ADAT1)) {
+                                snd_printk("Hammerfall-DSP: Detected ADAT in double speed mode\n");
+                        } else if (hdsp->io_type == H9632 && (spdif_freq == external_freq*4) && (hdsp_autosync_ref(hdsp) >= HDSP_AUTOSYNC_FROM_ADAT1)) {
+                                snd_printk("Hammerfall-DSP: Detected ADAT in quad speed mode\n");                       
+                        } else if (rate != external_freq) {
+                                snd_printk("Hammerfall-DSP: No AutoSync source for requested rate\n");
+                                return -1;
+                        }               
+                }       
+        }
+
+        current_rate = hdsp->system_sample_rate;
+
+        /* Changing from a "single speed" to a "double speed" rate is
+           not allowed if any substreams are open. This is because
+           such a change causes a shift in the location of 
+           the DMA buffers and a reduction in the number of available
+           buffers. 
+
+           Note that a similar but essentially insoluble problem
+           exists for externally-driven rate changes. All we can do
+           is to flag rate changes in the read/write routines.  */
+
+        if (rate > 96000 && hdsp->io_type != H9632) {
+                return -EINVAL;
+        }
+        
+        switch (rate) {
+        case 32000:
+                if (current_rate > 48000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency32KHz;
+                break;
+        case 44100:
+                if (current_rate > 48000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency44_1KHz;
+                break;
+        case 48000:
+                if (current_rate > 48000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency48KHz;
+                break;
+        case 64000:
+                if (current_rate <= 48000 || current_rate > 96000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency64KHz;
+                break;
+        case 88200:
+                if (current_rate <= 48000 || current_rate > 96000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency88_2KHz;
+                break;
+        case 96000:
+                if (current_rate <= 48000 || current_rate > 96000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency96KHz;
+                break;
+        case 128000:
+                if (current_rate < 128000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency128KHz;
+                break;
+        case 176400:
+                if (current_rate < 128000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency176_4KHz;
+                break;
+        case 192000:
+                if (current_rate < 128000) {
+                        reject_if_open = 1;
+                }
+                rate_bits = HDSP_Frequency192KHz;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        if (reject_if_open && (hdsp->capture_pid >= 0 || hdsp->playback_pid >= 0)) {
+                snd_printk ("Hammerfall-DSP: cannot change speed mode (capture PID = %d, playback PID = %d)\n",
+                            hdsp->capture_pid,
+                            hdsp->playback_pid);
+                return -EBUSY;
+        }
+
+        hdsp->control_register &= ~HDSP_FrequencyMask;
+        hdsp->control_register |= rate_bits;
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+
+        if (rate >= 128000) {
+                hdsp->channel_map = channel_map_H9632_qs;
+        } else if (rate > 48000) {
+                if (hdsp->io_type == H9632) {
+                        hdsp->channel_map = channel_map_H9632_ds;
+                } else {
+                        hdsp->channel_map = channel_map_ds;
+                }
+        } else {
+                switch (hdsp->io_type) {
+                case Multiface:
+                        hdsp->channel_map = channel_map_mf_ss;
+                        break;
+                case Digiface:
+                case H9652:
+                        hdsp->channel_map = channel_map_df_ss;
+                        break;
+                case H9632:
+                        hdsp->channel_map = channel_map_H9632_ss;
+                        break;
+                default:
+                        /* should never happen */
+                        break;
+                }
+        }
+        
+        hdsp->system_sample_rate = rate;
+
+        return 0;
+}
+
+/*----------------------------------------------------------------------------
+   MIDI
+  ----------------------------------------------------------------------------*/
+
+static unsigned char snd_hdsp_midi_read_byte (hdsp_t *hdsp, int id)
+{
+        /* the hardware already does the relevant bit-mask with 0xff */
+        if (id) {
+                return hdsp_read(hdsp, HDSP_midiDataIn1);
+        } else {
+                return hdsp_read(hdsp, HDSP_midiDataIn0);
+        }
+}
+
+static void snd_hdsp_midi_write_byte (hdsp_t *hdsp, int id, int val)
+{
+        /* the hardware already does the relevant bit-mask with 0xff */
+        if (id) {
+                hdsp_write(hdsp, HDSP_midiDataOut1, val);
+        } else {
+                hdsp_write(hdsp, HDSP_midiDataOut0, val);
+        }
+}
+
+static int snd_hdsp_midi_input_available (hdsp_t *hdsp, int id)
+{
+        if (id) {
+                return (hdsp_read(hdsp, HDSP_midiStatusIn1) & 0xff);
+        } else {
+                return (hdsp_read(hdsp, HDSP_midiStatusIn0) & 0xff);
+        }
+}
+
+static int snd_hdsp_midi_output_possible (hdsp_t *hdsp, int id)
+{
+        int fifo_bytes_used;
+
+        if (id) {
+                fifo_bytes_used = hdsp_read(hdsp, HDSP_midiStatusOut1) & 0xff;
+        } else {
+                fifo_bytes_used = hdsp_read(hdsp, HDSP_midiStatusOut0) & 0xff;
+        }
+
+        if (fifo_bytes_used < 128) {
+                return  128 - fifo_bytes_used;
+        } else {
+                return 0;
+        }
+}
+
+static void snd_hdsp_flush_midi_input (hdsp_t *hdsp, int id)
+{
+        while (snd_hdsp_midi_input_available (hdsp, id)) {
+                snd_hdsp_midi_read_byte (hdsp, id);
+        }
+}
+
+static int snd_hdsp_midi_output_write (hdsp_midi_t *hmidi)
+{
+        unsigned long flags;
+        int n_pending;
+        int to_write;
+        int i;
+        unsigned char buf[128];
+
+        /* Output is not interrupt driven */
+                
+        spin_lock_irqsave (&hmidi->lock, flags);
+        if (hmidi->output) {
+                if (!snd_rawmidi_transmit_empty (hmidi->output)) {
+                        if ((n_pending = snd_hdsp_midi_output_possible (hmidi->hdsp, hmidi->id)) > 0) {
+                                if (n_pending > (int)sizeof (buf))
+                                        n_pending = sizeof (buf);
+                                
+                                if ((to_write = snd_rawmidi_transmit (hmidi->output, buf, n_pending)) > 0) {
+                                        for (i = 0; i < to_write; ++i) 
+                                                snd_hdsp_midi_write_byte (hmidi->hdsp, hmidi->id, buf[i]);
+                                }
+                        }
+                }
+        }
+        spin_unlock_irqrestore (&hmidi->lock, flags);
+        return 0;
+}
+
+static int snd_hdsp_midi_input_read (hdsp_midi_t *hmidi)
+{
+        unsigned char buf[128]; /* this buffer is designed to match the MIDI input FIFO size */
+        unsigned long flags;
+        int n_pending;
+        int i;
+
+        spin_lock_irqsave (&hmidi->lock, flags);
+        if ((n_pending = snd_hdsp_midi_input_available (hmidi->hdsp, hmidi->id)) > 0) {
+                if (hmidi->input) {
+                        if (n_pending > (int)sizeof (buf)) {
+                                n_pending = sizeof (buf);
+                        }
+                        for (i = 0; i < n_pending; ++i) {
+                                buf[i] = snd_hdsp_midi_read_byte (hmidi->hdsp, hmidi->id);
+                        }
+                        if (n_pending) {
+                                snd_rawmidi_receive (hmidi->input, buf, n_pending);
+                        }
+                } else {
+                        /* flush the MIDI input FIFO */
+                        while (--n_pending) {
+                                snd_hdsp_midi_read_byte (hmidi->hdsp, hmidi->id);
+                        }
+                }
+        }
+        hmidi->pending = 0;
+        if (hmidi->id) {
+                hmidi->hdsp->control_register |= HDSP_Midi1InterruptEnable;
+        } else {
+                hmidi->hdsp->control_register |= HDSP_Midi0InterruptEnable;
+        }
+        hdsp_write(hmidi->hdsp, HDSP_controlRegister, hmidi->hdsp->control_register);
+        spin_unlock_irqrestore (&hmidi->lock, flags);
+        return snd_hdsp_midi_output_write (hmidi);
+}
+
+static void snd_hdsp_midi_input_trigger(snd_rawmidi_substream_t * substream, int up)
+{
+        hdsp_t *hdsp;
+        hdsp_midi_t *hmidi;
+        unsigned long flags;
+        u32 ie;
+
+        hmidi = (hdsp_midi_t *) substream->rmidi->private_data;
+        hdsp = hmidi->hdsp;
+        ie = hmidi->id ? HDSP_Midi1InterruptEnable : HDSP_Midi0InterruptEnable;
+        spin_lock_irqsave (&hdsp->lock, flags);
+        if (up) {
+                if (!(hdsp->control_register & ie)) {
+                        snd_hdsp_flush_midi_input (hdsp, hmidi->id);
+                        hdsp->control_register |= ie;
+                }
+        } else {
+                hdsp->control_register &= ~ie;
+                tasklet_kill(&hdsp->midi_tasklet);
+        }
+
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        spin_unlock_irqrestore (&hdsp->lock, flags);
+}
+
+static void snd_hdsp_midi_output_timer(unsigned long data)
+{
+        hdsp_midi_t *hmidi = (hdsp_midi_t *) data;
+        unsigned long flags;
+        
+        snd_hdsp_midi_output_write(hmidi);
+        spin_lock_irqsave (&hmidi->lock, flags);
+
+        /* this does not bump hmidi->istimer, because the
+           kernel automatically removed the timer when it
+           expired, and we are now adding it back, thus
+           leaving istimer wherever it was set before.  
+        */
+
+        if (hmidi->istimer) {
+                hmidi->timer.expires = 1 + jiffies;
+                add_timer(&hmidi->timer);
+        }
+
+        spin_unlock_irqrestore (&hmidi->lock, flags);
+}
+
+static void snd_hdsp_midi_output_trigger(snd_rawmidi_substream_t * substream, int up)
+{
+        hdsp_midi_t *hmidi;
+        unsigned long flags;
+
+        hmidi = (hdsp_midi_t *) substream->rmidi->private_data;
+        spin_lock_irqsave (&hmidi->lock, flags);
+        if (up) {
+                if (!hmidi->istimer) {
+                        init_timer(&hmidi->timer);
+                        hmidi->timer.function = snd_hdsp_midi_output_timer;
+                        hmidi->timer.data = (unsigned long) hmidi;
+                        hmidi->timer.expires = 1 + jiffies;
+                        add_timer(&hmidi->timer);
+                        hmidi->istimer++;
+                }
+        } else {
+                if (hmidi->istimer && --hmidi->istimer <= 0) {
+                        del_timer (&hmidi->timer);
+                }
+        }
+        spin_unlock_irqrestore (&hmidi->lock, flags);
+        if (up)
+                snd_hdsp_midi_output_write(hmidi);
+}
+
+static int snd_hdsp_midi_input_open(snd_rawmidi_substream_t * substream)
+{
+        hdsp_midi_t *hmidi;
+
+        hmidi = (hdsp_midi_t *) substream->rmidi->private_data;
+        spin_lock_irq (&hmidi->lock);
+        snd_hdsp_flush_midi_input (hmidi->hdsp, hmidi->id);
+        hmidi->input = substream;
+        spin_unlock_irq (&hmidi->lock);
+
+        return 0;
+}
+
+static int snd_hdsp_midi_output_open(snd_rawmidi_substream_t * substream)
+{
+        hdsp_midi_t *hmidi;
+
+        hmidi = (hdsp_midi_t *) substream->rmidi->private_data;
+        spin_lock_irq (&hmidi->lock);
+        hmidi->output = substream;
+        spin_unlock_irq (&hmidi->lock);
+
+        return 0;
+}
+
+static int snd_hdsp_midi_input_close(snd_rawmidi_substream_t * substream)
+{
+        hdsp_midi_t *hmidi;
+
+        snd_hdsp_midi_input_trigger (substream, 0);
+
+        hmidi = (hdsp_midi_t *) substream->rmidi->private_data;
+        spin_lock_irq (&hmidi->lock);
+        hmidi->input = NULL;
+        spin_unlock_irq (&hmidi->lock);
+
+        return 0;
+}
+
+static int snd_hdsp_midi_output_close(snd_rawmidi_substream_t * substream)
+{
+        hdsp_midi_t *hmidi;
+
+        snd_hdsp_midi_output_trigger (substream, 0);
+
+        hmidi = (hdsp_midi_t *) substream->rmidi->private_data;
+        spin_lock_irq (&hmidi->lock);
+        hmidi->output = NULL;
+        spin_unlock_irq (&hmidi->lock);
+
+        return 0;
+}
+
+static snd_rawmidi_ops_t snd_hdsp_midi_output =
+{
+        .open =         snd_hdsp_midi_output_open,
+        .close =        snd_hdsp_midi_output_close,
+        .trigger =      snd_hdsp_midi_output_trigger,
+};
+
+static snd_rawmidi_ops_t snd_hdsp_midi_input =
+{
+        .open =         snd_hdsp_midi_input_open,
+        .close =        snd_hdsp_midi_input_close,
+        .trigger =      snd_hdsp_midi_input_trigger,
+};
+
+static int __devinit snd_hdsp_create_midi (snd_card_t *card, hdsp_t *hdsp, int id)
+{
+        char buf[32];
+
+        hdsp->midi[id].id = id;
+        hdsp->midi[id].rmidi = NULL;
+        hdsp->midi[id].input = NULL;
+        hdsp->midi[id].output = NULL;
+        hdsp->midi[id].hdsp = hdsp;
+        hdsp->midi[id].istimer = 0;
+        hdsp->midi[id].pending = 0;
+        spin_lock_init (&hdsp->midi[id].lock);
+
+        sprintf (buf, "%s MIDI %d", card->shortname, id+1);
+        if (snd_rawmidi_new (card, buf, id, 1, 1, &hdsp->midi[id].rmidi) < 0) {
+                return -1;
+        }
+
+        sprintf (hdsp->midi[id].rmidi->name, "%s MIDI %d", card->id, id+1);
+        hdsp->midi[id].rmidi->private_data = &hdsp->midi[id];
+
+        snd_rawmidi_set_ops (hdsp->midi[id].rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_hdsp_midi_output);
+        snd_rawmidi_set_ops (hdsp->midi[id].rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_hdsp_midi_input);
+
+        hdsp->midi[id].rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT |
+                SNDRV_RAWMIDI_INFO_INPUT |
+                SNDRV_RAWMIDI_INFO_DUPLEX;
+
+        return 0;
+}
+
+/*-----------------------------------------------------------------------------
+  Control Interface
+  ----------------------------------------------------------------------------*/
+
+static u32 snd_hdsp_convert_from_aes(snd_aes_iec958_t *aes)
+{
+        u32 val = 0;
+        val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? HDSP_SPDIFProfessional : 0;
+        val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? HDSP_SPDIFNonAudio : 0;
+        if (val & HDSP_SPDIFProfessional)
+                val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? HDSP_SPDIFEmphasis : 0;
+        else
+                val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? HDSP_SPDIFEmphasis : 0;
+        return val;
+}
+
+static void snd_hdsp_convert_to_aes(snd_aes_iec958_t *aes, u32 val)
+{
+        aes->status[0] = ((val & HDSP_SPDIFProfessional) ? IEC958_AES0_PROFESSIONAL : 0) |
+                         ((val & HDSP_SPDIFNonAudio) ? IEC958_AES0_NONAUDIO : 0);
+        if (val & HDSP_SPDIFProfessional)
+                aes->status[0] |= (val & HDSP_SPDIFEmphasis) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
+        else
+                aes->status[0] |= (val & HDSP_SPDIFEmphasis) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
+}
+
+static int snd_hdsp_control_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+        uinfo->count = 1;
+        return 0;
+}
+
+static int snd_hdsp_control_spdif_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        snd_hdsp_convert_to_aes(&ucontrol->value.iec958, hdsp->creg_spdif);
+        return 0;
+}
+
+static int snd_hdsp_control_spdif_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        u32 val;
+        
+        val = snd_hdsp_convert_from_aes(&ucontrol->value.iec958);
+        spin_lock_irq(&hdsp->lock);
+        change = val != hdsp->creg_spdif;
+        hdsp->creg_spdif = val;
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+static int snd_hdsp_control_spdif_stream_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+        uinfo->count = 1;
+        return 0;
+}
+
+static int snd_hdsp_control_spdif_stream_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        snd_hdsp_convert_to_aes(&ucontrol->value.iec958, hdsp->creg_spdif_stream);
+        return 0;
+}
+
+static int snd_hdsp_control_spdif_stream_put(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        u32 val;
+        
+        val = snd_hdsp_convert_from_aes(&ucontrol->value.iec958);
+        spin_lock_irq(&hdsp->lock);
+        change = val != hdsp->creg_spdif_stream;
+        hdsp->creg_spdif_stream = val;
+        hdsp->control_register &= ~(HDSP_SPDIFProfessional | HDSP_SPDIFNonAudio | HDSP_SPDIFEmphasis);
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register |= val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+static int snd_hdsp_control_spdif_mask_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+        uinfo->count = 1;
+        return 0;
+}
+
+static int snd_hdsp_control_spdif_mask_get(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        ucontrol->value.iec958.status[0] = kcontrol->private_value;
+        return 0;
+}
+
+#define HDSP_SPDIF_IN(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_PCM,  \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_spdif_in, \
+  .get = snd_hdsp_get_spdif_in, \
+  .put = snd_hdsp_put_spdif_in }
+
+static unsigned int hdsp_spdif_in(hdsp_t *hdsp)
+{
+        return hdsp_decode_spdif_in(hdsp->control_register & HDSP_SPDIFInputMask);
+}
+
+static int hdsp_set_spdif_input(hdsp_t *hdsp, int in)
+{
+        hdsp->control_register &= ~HDSP_SPDIFInputMask;
+        hdsp->control_register |= hdsp_encode_spdif_in(in);
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_spdif_in(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[4] = {"Optical", "Coaxial", "Internal", "AES"};
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = ((hdsp->io_type == H9632) ? 4 : 3);
+        if (uinfo->value.enumerated.item > ((hdsp->io_type == H9632) ? 3 : 2))
+                uinfo->value.enumerated.item = ((hdsp->io_type == H9632) ? 3 : 2);
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_spdif_in(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_spdif_in(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_spdif_in(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.enumerated.item[0] % ((hdsp->io_type == H9632) ? 4 : 3);
+        spin_lock_irq(&hdsp->lock);
+        change = val != hdsp_spdif_in(hdsp);
+        if (change)
+                hdsp_set_spdif_input(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_SPDIF_OUT(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, .name = xname, .index = xindex, \
+  .info = snd_hdsp_info_spdif_bits, \
+  .get = snd_hdsp_get_spdif_out, .put = snd_hdsp_put_spdif_out }
+
+static int hdsp_spdif_out(hdsp_t *hdsp)
+{
+        return (hdsp->control_register & HDSP_SPDIFOpticalOut) ? 1 : 0;
+}
+
+static int hdsp_set_spdif_output(hdsp_t *hdsp, int out)
+{
+        if (out) {
+                hdsp->control_register |= HDSP_SPDIFOpticalOut;
+        } else {
+                hdsp->control_register &= ~HDSP_SPDIFOpticalOut;
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_spdif_bits(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+        uinfo->count = 1;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 1;
+        return 0;
+}
+
+static int snd_hdsp_get_spdif_out(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.integer.value[0] = hdsp_spdif_out(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_spdif_out(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp_spdif_out(hdsp);
+        hdsp_set_spdif_output(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_SPDIF_PROFESSIONAL(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, .name = xname, .index = xindex, \
+  .info = snd_hdsp_info_spdif_bits, \
+  .get = snd_hdsp_get_spdif_professional, .put = snd_hdsp_put_spdif_professional }
+
+static int hdsp_spdif_professional(hdsp_t *hdsp)
+{
+        return (hdsp->control_register & HDSP_SPDIFProfessional) ? 1 : 0;
+}
+
+static int hdsp_set_spdif_professional(hdsp_t *hdsp, int val)
+{
+        if (val) {
+                hdsp->control_register |= HDSP_SPDIFProfessional;
+        } else {
+                hdsp->control_register &= ~HDSP_SPDIFProfessional;
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_get_spdif_professional(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.integer.value[0] = hdsp_spdif_professional(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_spdif_professional(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp_spdif_professional(hdsp);
+        hdsp_set_spdif_professional(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_SPDIF_EMPHASIS(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, .name = xname, .index = xindex, \
+  .info = snd_hdsp_info_spdif_bits, \
+  .get = snd_hdsp_get_spdif_emphasis, .put = snd_hdsp_put_spdif_emphasis }
+
+static int hdsp_spdif_emphasis(hdsp_t *hdsp)
+{
+        return (hdsp->control_register & HDSP_SPDIFEmphasis) ? 1 : 0;
+}
+
+static int hdsp_set_spdif_emphasis(hdsp_t *hdsp, int val)
+{
+        if (val) {
+                hdsp->control_register |= HDSP_SPDIFEmphasis;
+        } else {
+                hdsp->control_register &= ~HDSP_SPDIFEmphasis;
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_get_spdif_emphasis(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.integer.value[0] = hdsp_spdif_emphasis(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_spdif_emphasis(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp_spdif_emphasis(hdsp);
+        hdsp_set_spdif_emphasis(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_SPDIF_NON_AUDIO(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, .name = xname, .index = xindex, \
+  .info = snd_hdsp_info_spdif_bits, \
+  .get = snd_hdsp_get_spdif_nonaudio, .put = snd_hdsp_put_spdif_nonaudio }
+
+static int hdsp_spdif_nonaudio(hdsp_t *hdsp)
+{
+        return (hdsp->control_register & HDSP_SPDIFNonAudio) ? 1 : 0;
+}
+
+static int hdsp_set_spdif_nonaudio(hdsp_t *hdsp, int val)
+{
+        if (val) {
+                hdsp->control_register |= HDSP_SPDIFNonAudio;
+        } else {
+                hdsp->control_register &= ~HDSP_SPDIFNonAudio;
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_get_spdif_nonaudio(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.integer.value[0] = hdsp_spdif_nonaudio(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_spdif_nonaudio(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp_spdif_nonaudio(hdsp);
+        hdsp_set_spdif_nonaudio(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_SPDIF_SAMPLE_RATE(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ, \
+  .info = snd_hdsp_info_spdif_sample_rate, \
+  .get = snd_hdsp_get_spdif_sample_rate \
+}
+
+static int snd_hdsp_info_spdif_sample_rate(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"32000", "44100", "48000", "64000", "88200", "96000", "None", "128000", "176400", "192000"};
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = (hdsp->io_type == H9632) ? 10 : 7;
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_spdif_sample_rate(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        switch (hdsp_spdif_sample_rate(hdsp)) {
+        case 32000:
+                ucontrol->value.enumerated.item[0] = 0;
+                break;
+        case 44100:
+                ucontrol->value.enumerated.item[0] = 1;
+                break;
+        case 48000:
+                ucontrol->value.enumerated.item[0] = 2;
+                break;
+        case 64000:
+                ucontrol->value.enumerated.item[0] = 3;
+                break;
+        case 88200:
+                ucontrol->value.enumerated.item[0] = 4;
+                break;
+        case 96000:
+                ucontrol->value.enumerated.item[0] = 5;
+                break;
+        case 128000:
+                ucontrol->value.enumerated.item[0] = 7;
+                break;
+        case 176400:
+                ucontrol->value.enumerated.item[0] = 8;
+                break;
+        case 192000:
+                ucontrol->value.enumerated.item[0] = 9;
+                break;
+        default:
+                ucontrol->value.enumerated.item[0] = 6;         
+        }
+        return 0;
+}
+
+#define HDSP_SYSTEM_SAMPLE_RATE(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ, \
+  .info = snd_hdsp_info_system_sample_rate, \
+  .get = snd_hdsp_get_system_sample_rate \
+}
+
+static int snd_hdsp_info_system_sample_rate(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+        uinfo->count = 1;
+        return 0;
+}
+
+static int snd_hdsp_get_system_sample_rate(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp->system_sample_rate;
+        return 0;
+}
+
+#define HDSP_AUTOSYNC_SAMPLE_RATE(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_PCM, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ, \
+  .info = snd_hdsp_info_autosync_sample_rate, \
+  .get = snd_hdsp_get_autosync_sample_rate \
+}
+
+static int snd_hdsp_info_autosync_sample_rate(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        static char *texts[] = {"32000", "44100", "48000", "64000", "88200", "96000", "None", "128000", "176400", "192000"};    
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = (hdsp->io_type == H9632) ? 10 : 7 ;
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_autosync_sample_rate(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        switch (hdsp_external_sample_rate(hdsp)) {
+        case 32000:
+                ucontrol->value.enumerated.item[0] = 0;
+                break;
+        case 44100:
+                ucontrol->value.enumerated.item[0] = 1;
+                break;
+        case 48000:
+                ucontrol->value.enumerated.item[0] = 2;
+                break;
+        case 64000:
+                ucontrol->value.enumerated.item[0] = 3;
+                break;
+        case 88200:
+                ucontrol->value.enumerated.item[0] = 4;
+                break;
+        case 96000:
+                ucontrol->value.enumerated.item[0] = 5;
+                break;
+        case 128000:
+                ucontrol->value.enumerated.item[0] = 7;
+                break;
+        case 176400:
+                ucontrol->value.enumerated.item[0] = 8;
+                break;
+        case 192000:
+                ucontrol->value.enumerated.item[0] = 9;
+                break;  
+        default:
+                ucontrol->value.enumerated.item[0] = 6;         
+        }
+        return 0;
+}
+
+#define HDSP_SYSTEM_CLOCK_MODE(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ, \
+  .info = snd_hdsp_info_system_clock_mode, \
+  .get = snd_hdsp_get_system_clock_mode \
+}
+
+static int hdsp_system_clock_mode(hdsp_t *hdsp)
+{
+        if (hdsp->control_register & HDSP_ClockModeMaster) {
+                return 0;
+        } else if (hdsp_external_sample_rate(hdsp) != hdsp->system_sample_rate) {
+                        return 0;
+        }
+        return 1;
+}
+
+static int snd_hdsp_info_system_clock_mode(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"Master", "Slave" };
+        
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = 2;
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_system_clock_mode(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_system_clock_mode(hdsp);
+        return 0;
+}
+
+#define HDSP_CLOCK_SOURCE(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_PCM, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_clock_source, \
+  .get = snd_hdsp_get_clock_source, \
+  .put = snd_hdsp_put_clock_source \
+}
+
+static int hdsp_clock_source(hdsp_t *hdsp)
+{
+        if (hdsp->control_register & HDSP_ClockModeMaster) {
+                switch (hdsp->system_sample_rate) {
+                case 32000:
+                        return 1;
+                case 44100:
+                        return 2;
+                case 48000:
+                        return 3;
+                case 64000:
+                        return 4;
+                case 88200:
+                        return 5;
+                case 96000:
+                        return 6;
+                case 128000:
+                        return 7;
+                case 176400:
+                        return 8;
+                case 192000:
+                        return 9;
+                default:
+                        return 3;       
+                }
+        } else {
+                return 0;
+        }
+}
+
+static int hdsp_set_clock_source(hdsp_t *hdsp, int mode)
+{
+        int rate;
+        switch (mode) {
+        case HDSP_CLOCK_SOURCE_AUTOSYNC:
+                if (hdsp_external_sample_rate(hdsp) != 0) {
+                    if (!hdsp_set_rate(hdsp, hdsp_external_sample_rate(hdsp), 1)) {
+                        hdsp->control_register &= ~HDSP_ClockModeMaster;                
+                        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+                        return 0;
+                    }
+                }
+                return -1;
+        case HDSP_CLOCK_SOURCE_INTERNAL_32KHZ:
+                rate = 32000;
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_44_1KHZ:
+                rate = 44100;
+                break;      
+        case HDSP_CLOCK_SOURCE_INTERNAL_48KHZ:
+                rate = 48000;
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_64KHZ:
+                rate = 64000;
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_88_2KHZ:
+                rate = 88200;
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_96KHZ:
+                rate = 96000;
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_128KHZ:
+                rate = 128000;
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_176_4KHZ:
+                rate = 176400;
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_192KHZ:
+                rate = 192000;
+                break;
+        default:
+                rate = 48000;
+        }
+        hdsp->control_register |= HDSP_ClockModeMaster;
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        hdsp_set_rate(hdsp, rate, 1);
+        return 0;
+}
+
+static int snd_hdsp_info_clock_source(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"AutoSync", "Internal 32.0 kHz", "Internal 44.1 kHz", "Internal 48.0 kHz", "Internal 64.0 kHz", "Internal 88.2 kHz", "Internal 96.0 kHz", "Internal 128 kHz", "Internal 176.4 kHz", "Internal 192.0 KHz" };
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        if (hdsp->io_type == H9632)
+            uinfo->value.enumerated.items = 10;
+        else
+            uinfo->value.enumerated.items = 7;  
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_clock_source(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_clock_source(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_clock_source(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.enumerated.item[0];
+        if (val < 0) val = 0;
+        if (hdsp->io_type == H9632) {
+            if (val > 9) val = 9;
+        } else {
+            if (val > 6) val = 6;
+        }
+        spin_lock_irq(&hdsp->lock);
+        if (val != hdsp_clock_source(hdsp)) {
+                change = (hdsp_set_clock_source(hdsp, val) == 0) ? 1 : 0;
+        } else {
+                change = 0;
+        }
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_DA_GAIN(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_da_gain, \
+  .get = snd_hdsp_get_da_gain, \
+  .put = snd_hdsp_put_da_gain \
+}
+
+static int hdsp_da_gain(hdsp_t *hdsp)
+{
+        switch (hdsp->control_register & HDSP_DAGainMask) {
+        case HDSP_DAGainHighGain:
+                return 0;
+        case HDSP_DAGainPlus4dBu:
+                return 1;
+        case HDSP_DAGainMinus10dBV:
+                return 2;
+        default:
+                return 1;       
+        }
+}
+
+static int hdsp_set_da_gain(hdsp_t *hdsp, int mode)
+{
+        hdsp->control_register &= ~HDSP_DAGainMask;
+        switch (mode) {
+        case 0:
+                hdsp->control_register |= HDSP_DAGainHighGain;
+                break;
+        case 1:
+                hdsp->control_register |= HDSP_DAGainPlus4dBu;
+                break;
+        case 2:
+                hdsp->control_register |= HDSP_DAGainMinus10dBV;                
+                break;      
+        default:
+                return -1;
+
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_da_gain(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"Hi Gain", "+4 dBu", "-10 dbV"};
+        
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = 3;
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_da_gain(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_da_gain(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_da_gain(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.enumerated.item[0];
+        if (val < 0) val = 0;
+        if (val > 2) val = 2;
+        spin_lock_irq(&hdsp->lock);
+        if (val != hdsp_da_gain(hdsp)) {
+                change = (hdsp_set_da_gain(hdsp, val) == 0) ? 1 : 0;
+        } else {
+                change = 0;
+        }
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_AD_GAIN(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_ad_gain, \
+  .get = snd_hdsp_get_ad_gain, \
+  .put = snd_hdsp_put_ad_gain \
+}
+
+static int hdsp_ad_gain(hdsp_t *hdsp)
+{
+        switch (hdsp->control_register & HDSP_ADGainMask) {
+        case HDSP_ADGainMinus10dBV:
+                return 0;
+        case HDSP_ADGainPlus4dBu:
+                return 1;
+        case HDSP_ADGainLowGain:
+                return 2;
+        default:
+                return 1;       
+        }
+}
+
+static int hdsp_set_ad_gain(hdsp_t *hdsp, int mode)
+{
+        hdsp->control_register &= ~HDSP_ADGainMask;
+        switch (mode) {
+        case 0:
+                hdsp->control_register |= HDSP_ADGainMinus10dBV;
+                break;
+        case 1:
+                hdsp->control_register |= HDSP_ADGainPlus4dBu;          
+                break;
+        case 2:
+                hdsp->control_register |= HDSP_ADGainLowGain;           
+                break;      
+        default:
+                return -1;
+
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_ad_gain(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"-10 dBV", "+4 dBu", "Lo Gain"};
+        
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = 3;
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_ad_gain(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_ad_gain(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_ad_gain(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.enumerated.item[0];
+        if (val < 0) val = 0;
+        if (val > 2) val = 2;
+        spin_lock_irq(&hdsp->lock);
+        if (val != hdsp_ad_gain(hdsp)) {
+                change = (hdsp_set_ad_gain(hdsp, val) == 0) ? 1 : 0;
+        } else {
+                change = 0;
+        }
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_PHONE_GAIN(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_phone_gain, \
+  .get = snd_hdsp_get_phone_gain, \
+  .put = snd_hdsp_put_phone_gain \
+}
+
+static int hdsp_phone_gain(hdsp_t *hdsp)
+{
+        switch (hdsp->control_register & HDSP_PhoneGainMask) {
+        case HDSP_PhoneGain0dB:
+                return 0;
+        case HDSP_PhoneGainMinus6dB:
+                return 1;
+        case HDSP_PhoneGainMinus12dB:
+                return 2;
+        default:
+                return 0;       
+        }
+}
+
+static int hdsp_set_phone_gain(hdsp_t *hdsp, int mode)
+{
+        hdsp->control_register &= ~HDSP_PhoneGainMask;
+        switch (mode) {
+        case 0:
+                hdsp->control_register |= HDSP_PhoneGain0dB;
+                break;
+        case 1:
+                hdsp->control_register |= HDSP_PhoneGainMinus6dB;               
+                break;
+        case 2:
+                hdsp->control_register |= HDSP_PhoneGainMinus12dB;              
+                break;      
+        default:
+                return -1;
+
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_phone_gain(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"0 dB", "-6 dB", "-12 dB"};
+        
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = 3;
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_phone_gain(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_phone_gain(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_phone_gain(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.enumerated.item[0];
+        if (val < 0) val = 0;
+        if (val > 2) val = 2;
+        spin_lock_irq(&hdsp->lock);
+        if (val != hdsp_phone_gain(hdsp)) {
+                change = (hdsp_set_phone_gain(hdsp, val) == 0) ? 1 : 0;
+        } else {
+                change = 0;
+        }
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_XLR_BREAKOUT_CABLE(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_xlr_breakout_cable, \
+  .get = snd_hdsp_get_xlr_breakout_cable, \
+  .put = snd_hdsp_put_xlr_breakout_cable \
+}
+
+static int hdsp_xlr_breakout_cable(hdsp_t *hdsp)
+{
+        if (hdsp->control_register & HDSP_XLRBreakoutCable) {
+                return 1;
+        }
+        return 0;
+}
+
+static int hdsp_set_xlr_breakout_cable(hdsp_t *hdsp, int mode)
+{
+        if (mode) {
+                hdsp->control_register |= HDSP_XLRBreakoutCable;
+        } else {
+                hdsp->control_register &= ~HDSP_XLRBreakoutCable;
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_xlr_breakout_cable(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+        uinfo->count = 1;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 1;
+        return 0;
+}
+
+static int snd_hdsp_get_xlr_breakout_cable(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_xlr_breakout_cable(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_xlr_breakout_cable(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp_xlr_breakout_cable(hdsp);
+        hdsp_set_xlr_breakout_cable(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+/* (De)activates old RME Analog Extension Board
+   These are connected to the internal ADAT connector
+   Switching this on desactivates external ADAT
+*/
+#define HDSP_AEB(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_aeb, \
+  .get = snd_hdsp_get_aeb, \
+  .put = snd_hdsp_put_aeb \
+}
+
+static int hdsp_aeb(hdsp_t *hdsp)
+{
+        if (hdsp->control_register & HDSP_AnalogExtensionBoard) {
+                return 1;
+        }
+        return 0;
+}
+
+static int hdsp_set_aeb(hdsp_t *hdsp, int mode)
+{
+        if (mode) {
+                hdsp->control_register |= HDSP_AnalogExtensionBoard;
+        } else {
+                hdsp->control_register &= ~HDSP_AnalogExtensionBoard;
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_aeb(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+        uinfo->count = 1;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 1;
+        return 0;
+}
+
+static int snd_hdsp_get_aeb(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_aeb(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_aeb(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp_aeb(hdsp);
+        hdsp_set_aeb(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_PREF_SYNC_REF(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_pref_sync_ref, \
+  .get = snd_hdsp_get_pref_sync_ref, \
+  .put = snd_hdsp_put_pref_sync_ref \
+}
+
+static int hdsp_pref_sync_ref(hdsp_t *hdsp)
+{
+        /* Notice that this looks at the requested sync source,
+           not the one actually in use.
+        */
+
+        switch (hdsp->control_register & HDSP_SyncRefMask) {
+        case HDSP_SyncRef_ADAT1:
+                return HDSP_SYNC_FROM_ADAT1;
+        case HDSP_SyncRef_ADAT2:
+                return HDSP_SYNC_FROM_ADAT2;
+        case HDSP_SyncRef_ADAT3:
+                return HDSP_SYNC_FROM_ADAT3;
+        case HDSP_SyncRef_SPDIF:
+                return HDSP_SYNC_FROM_SPDIF;
+        case HDSP_SyncRef_WORD:
+                return HDSP_SYNC_FROM_WORD;
+        case HDSP_SyncRef_ADAT_SYNC:
+                return HDSP_SYNC_FROM_ADAT_SYNC;
+        default:
+                return HDSP_SYNC_FROM_WORD;
+        }
+        return 0;
+}
+
+static int hdsp_set_pref_sync_ref(hdsp_t *hdsp, int pref)
+{
+        hdsp->control_register &= ~HDSP_SyncRefMask;
+        switch (pref) {
+        case HDSP_SYNC_FROM_ADAT1:
+                hdsp->control_register &= ~HDSP_SyncRefMask; /* clear SyncRef bits */
+                break;
+        case HDSP_SYNC_FROM_ADAT2:
+                hdsp->control_register |= HDSP_SyncRef_ADAT2;
+                break;
+        case HDSP_SYNC_FROM_ADAT3:
+                hdsp->control_register |= HDSP_SyncRef_ADAT3;
+                break;
+        case HDSP_SYNC_FROM_SPDIF:
+                hdsp->control_register |= HDSP_SyncRef_SPDIF;
+                break;
+        case HDSP_SYNC_FROM_WORD:
+                hdsp->control_register |= HDSP_SyncRef_WORD;
+                break;
+        case HDSP_SYNC_FROM_ADAT_SYNC:
+                hdsp->control_register |= HDSP_SyncRef_ADAT_SYNC;
+                break;
+        default:
+                return -1;
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_pref_sync_ref(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"Word", "IEC958", "ADAT1", "ADAT Sync", "ADAT2", "ADAT3" };
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+
+        switch (hdsp->io_type) {
+        case Digiface:
+        case H9652:
+                uinfo->value.enumerated.items = 6;
+                break;
+        case Multiface:
+                uinfo->value.enumerated.items = 4;
+                break;
+        case H9632:
+                uinfo->value.enumerated.items = 3;
+                break;
+        default:
+                uinfo->value.enumerated.items = 0;
+                break;
+        }
+                
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_pref_sync_ref(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_pref_sync_ref(hdsp);
+        return 0;
+}
+
+static int snd_hdsp_put_pref_sync_ref(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change, max;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+
+        switch (hdsp->io_type) {
+        case Digiface:
+        case H9652:
+                max = 6;
+                break;
+        case Multiface:
+                max = 4;
+                break;
+        case H9632:
+                max = 3;
+                break;
+        default:
+                return -EIO;
+        }
+
+        val = ucontrol->value.enumerated.item[0] % max;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp_pref_sync_ref(hdsp);
+        hdsp_set_pref_sync_ref(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_AUTOSYNC_REF(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ, \
+  .info = snd_hdsp_info_autosync_ref, \
+  .get = snd_hdsp_get_autosync_ref, \
+}
+
+static int hdsp_autosync_ref(hdsp_t *hdsp)
+{
+        /* This looks at the autosync selected sync reference */
+        unsigned int status2 = hdsp_read(hdsp, HDSP_status2Register);
+
+        switch (status2 & HDSP_SelSyncRefMask) {
+        case HDSP_SelSyncRef_WORD:
+                return HDSP_AUTOSYNC_FROM_WORD;
+        case HDSP_SelSyncRef_ADAT_SYNC:
+                return HDSP_AUTOSYNC_FROM_ADAT_SYNC;
+        case HDSP_SelSyncRef_SPDIF:
+                return HDSP_AUTOSYNC_FROM_SPDIF;
+        case HDSP_SelSyncRefMask:
+                return HDSP_AUTOSYNC_FROM_NONE; 
+        case HDSP_SelSyncRef_ADAT1:
+                return HDSP_AUTOSYNC_FROM_ADAT1;
+        case HDSP_SelSyncRef_ADAT2:
+                return HDSP_AUTOSYNC_FROM_ADAT2;
+        case HDSP_SelSyncRef_ADAT3:
+                return HDSP_AUTOSYNC_FROM_ADAT3;
+        default:
+                return HDSP_AUTOSYNC_FROM_WORD;
+        }
+        return 0;
+}
+
+static int snd_hdsp_info_autosync_ref(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"Word", "ADAT Sync", "IEC958", "None", "ADAT1", "ADAT2", "ADAT3" };
+        
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = 7;
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int snd_hdsp_get_autosync_ref(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        ucontrol->value.enumerated.item[0] = hdsp_autosync_ref(hdsp);
+        return 0;
+}
+
+#define HDSP_LINE_OUT(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_line_out, \
+  .get = snd_hdsp_get_line_out, \
+  .put = snd_hdsp_put_line_out \
+}
+
+static int hdsp_line_out(hdsp_t *hdsp)
+{
+        return (hdsp->control_register & HDSP_LineOut) ? 1 : 0;
+}
+
+static int hdsp_set_line_output(hdsp_t *hdsp, int out)
+{
+        if (out) {
+                hdsp->control_register |= HDSP_LineOut;
+        } else {
+                hdsp->control_register &= ~HDSP_LineOut;
+        }
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        return 0;
+}
+
+static int snd_hdsp_info_line_out(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+        uinfo->count = 1;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 1;
+        return 0;
+}
+
+static int snd_hdsp_get_line_out(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        spin_lock_irq(&hdsp->lock);
+        ucontrol->value.integer.value[0] = hdsp_line_out(hdsp);
+        spin_unlock_irq(&hdsp->lock);
+        return 0;
+}
+
+static int snd_hdsp_put_line_out(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp_line_out(hdsp);
+        hdsp_set_line_output(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_PRECISE_POINTER(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_precise_pointer, \
+  .get = snd_hdsp_get_precise_pointer, \
+  .put = snd_hdsp_put_precise_pointer \
+}
+
+static int hdsp_set_precise_pointer(hdsp_t *hdsp, int precise)
+{
+        if (precise) {
+                hdsp->precise_ptr = 1;
+        } else {
+                hdsp->precise_ptr = 0;
+        }
+        return 0;
+}
+
+static int snd_hdsp_info_precise_pointer(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+        uinfo->count = 1;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 1;
+        return 0;
+}
+
+static int snd_hdsp_get_precise_pointer(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        spin_lock_irq(&hdsp->lock);
+        ucontrol->value.integer.value[0] = hdsp->precise_ptr;
+        spin_unlock_irq(&hdsp->lock);
+        return 0;
+}
+
+static int snd_hdsp_put_precise_pointer(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp->precise_ptr;
+        hdsp_set_precise_pointer(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_USE_MIDI_TASKLET(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .info = snd_hdsp_info_use_midi_tasklet, \
+  .get = snd_hdsp_get_use_midi_tasklet, \
+  .put = snd_hdsp_put_use_midi_tasklet \
+}
+
+static int hdsp_set_use_midi_tasklet(hdsp_t *hdsp, int use_tasklet)
+{
+        if (use_tasklet) {
+                hdsp->use_midi_tasklet = 1;
+        } else {
+                hdsp->use_midi_tasklet = 0;
+        }
+        return 0;
+}
+
+static int snd_hdsp_info_use_midi_tasklet(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+        uinfo->count = 1;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 1;
+        return 0;
+}
+
+static int snd_hdsp_get_use_midi_tasklet(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        
+        spin_lock_irq(&hdsp->lock);
+        ucontrol->value.integer.value[0] = hdsp->use_midi_tasklet;
+        spin_unlock_irq(&hdsp->lock);
+        return 0;
+}
+
+static int snd_hdsp_put_use_midi_tasklet(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        unsigned int val;
+        
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+        val = ucontrol->value.integer.value[0] & 1;
+        spin_lock_irq(&hdsp->lock);
+        change = (int)val != hdsp->use_midi_tasklet;
+        hdsp_set_use_midi_tasklet(hdsp, val);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_MIXER(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \
+                 SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+  .info = snd_hdsp_info_mixer, \
+  .get = snd_hdsp_get_mixer, \
+  .put = snd_hdsp_put_mixer \
+}
+
+static int snd_hdsp_info_mixer(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+        uinfo->count = 3;
+        uinfo->value.integer.min = 0;
+        uinfo->value.integer.max = 65536;
+        uinfo->value.integer.step = 1;
+        return 0;
+}
+
+static int snd_hdsp_get_mixer(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int source;
+        int destination;
+        int addr;
+
+        source = ucontrol->value.integer.value[0];
+        destination = ucontrol->value.integer.value[1];
+        
+        if (source >= hdsp->max_channels) {
+                addr = hdsp_playback_to_output_key(hdsp,source-hdsp->max_channels,destination);
+        } else {
+                addr = hdsp_input_to_output_key(hdsp,source, destination);
+        }
+        
+        spin_lock_irq(&hdsp->lock);
+        ucontrol->value.integer.value[2] = hdsp_read_gain (hdsp, addr);
+        spin_unlock_irq(&hdsp->lock);
+        return 0;
+}
+
+static int snd_hdsp_put_mixer(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+        int change;
+        int source;
+        int destination;
+        int gain;
+        int addr;
+
+        if (!snd_hdsp_use_is_exclusive(hdsp))
+                return -EBUSY;
+
+        source = ucontrol->value.integer.value[0];
+        destination = ucontrol->value.integer.value[1];
+
+        if (source >= hdsp->max_channels) {
+                addr = hdsp_playback_to_output_key(hdsp,source-hdsp->max_channels, destination);
+        } else {
+                addr = hdsp_input_to_output_key(hdsp,source, destination);
+        }
+
+        gain = ucontrol->value.integer.value[2];
+
+        spin_lock_irq(&hdsp->lock);
+        change = gain != hdsp_read_gain(hdsp, addr);
+        if (change)
+                hdsp_write_gain(hdsp, addr, gain);
+        spin_unlock_irq(&hdsp->lock);
+        return change;
+}
+
+#define HDSP_WC_SYNC_CHECK(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+  .info = snd_hdsp_info_sync_check, \
+  .get = snd_hdsp_get_wc_sync_check \
+}
+
+static int snd_hdsp_info_sync_check(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
+{
+        static char *texts[] = {"No Lock", "Lock", "Sync" };    
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = 3;
+        if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
+                uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
+        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
+        return 0;
+}
+
+static int hdsp_wc_sync_check(hdsp_t *hdsp)
+{
+        int status2 = hdsp_read(hdsp, HDSP_status2Register);
+        if (status2 & HDSP_wc_lock) {
+                if (status2 & HDSP_wc_sync) {
+                        return 2;
+                } else {
+                         return 1;
+                }
+        } else {                
+                return 0;
+        }
+        return 0;
+}
+
+static int snd_hdsp_get_wc_sync_check(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+
+        ucontrol->value.enumerated.item[0] = hdsp_wc_sync_check(hdsp);
+        return 0;
+}
+
+#define HDSP_SPDIF_SYNC_CHECK(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+  .info = snd_hdsp_info_sync_check, \
+  .get = snd_hdsp_get_spdif_sync_check \
+}
+
+static int hdsp_spdif_sync_check(hdsp_t *hdsp)
+{
+        int status = hdsp_read(hdsp, HDSP_statusRegister);
+        if (status & HDSP_SPDIFErrorFlag) {
+                return 0;
+        } else {        
+                if (status & HDSP_SPDIFSync) {
+                        return 2;
+                } else {
+                        return 1;
+                }
+        }
+        return 0;
+}
+
+static int snd_hdsp_get_spdif_sync_check(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+
+        ucontrol->value.enumerated.item[0] = hdsp_spdif_sync_check(hdsp);
+        return 0;
+}
+
+#define HDSP_ADATSYNC_SYNC_CHECK(xname, xindex) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .name = xname, \
+  .index = xindex, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+  .info = snd_hdsp_info_sync_check, \
+  .get = snd_hdsp_get_adatsync_sync_check \
+}
+
+static int hdsp_adatsync_sync_check(hdsp_t *hdsp)
+{
+        int status = hdsp_read(hdsp, HDSP_statusRegister);
+        if (status & HDSP_TimecodeLock) {
+                if (status & HDSP_TimecodeSync) {
+                        return 2;
+                } else {
+                        return 1;
+                }
+        } else {
+                return 0;
+        }
+}       
+
+static int snd_hdsp_get_adatsync_sync_check(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+
+        ucontrol->value.enumerated.item[0] = hdsp_adatsync_sync_check(hdsp);
+        return 0;
+}
+
+#define HDSP_ADAT_SYNC_CHECK \
+{ .iface = SNDRV_CTL_ELEM_IFACE_HWDEP, \
+  .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
+  .info = snd_hdsp_info_sync_check, \
+  .get = snd_hdsp_get_adat_sync_check \
+}
+
+static int hdsp_adat_sync_check(hdsp_t *hdsp, int idx)
+{       
+        int status = hdsp_read(hdsp, HDSP_statusRegister);
+        
+        if (status & (HDSP_Lock0>>idx)) {
+                if (status & (HDSP_Sync0>>idx)) {
+                        return 2;
+                } else {
+                        return 1;               
+                }
+        } else {
+                return 0;
+        }               
+} 
+
+static int snd_hdsp_get_adat_sync_check(snd_kcontrol_t * kcontrol, snd_ctl_elem_value_t * ucontrol)
+{
+        int offset;
+        hdsp_t *hdsp = snd_kcontrol_chip(kcontrol);
+
+        offset = ucontrol->id.index - 1;
+        snd_assert(offset >= 0);
+
+        switch (hdsp->io_type) {
+        case Digiface:
+        case H9652:
+                if (offset >= 3)
+                        return -EINVAL;
+                break;
+        case Multiface:
+        case H9632:
+                if (offset >= 1) 
+                        return -EINVAL;
+                break;
+        default:
+                return -EIO;
+        }
+
+        ucontrol->value.enumerated.item[0] = hdsp_adat_sync_check(hdsp, offset);
+        return 0;
+}
+
+static snd_kcontrol_new_t snd_hdsp_9632_controls[] = {
+HDSP_DA_GAIN("DA Gain", 0),
+HDSP_AD_GAIN("AD Gain", 0),
+HDSP_PHONE_GAIN("Phones Gain", 0),
+HDSP_XLR_BREAKOUT_CABLE("XLR Breakout Cable", 0)
+};
+
+static snd_kcontrol_new_t snd_hdsp_controls[] = {
+{
+        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
+        .info =         snd_hdsp_control_spdif_info,
+        .get =          snd_hdsp_control_spdif_get,
+        .put =          snd_hdsp_control_spdif_put,
+},
+{
+        .access =       SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
+        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
+        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
+        .info =         snd_hdsp_control_spdif_stream_info,
+        .get =          snd_hdsp_control_spdif_stream_get,
+        .put =          snd_hdsp_control_spdif_stream_put,
+},
+{
+        .access =       SNDRV_CTL_ELEM_ACCESS_READ,
+        .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
+        .info =         snd_hdsp_control_spdif_mask_info,
+        .get =          snd_hdsp_control_spdif_mask_get,
+        .private_value = IEC958_AES0_NONAUDIO |
+                         IEC958_AES0_PROFESSIONAL |
+                         IEC958_AES0_CON_EMPHASIS,                                                                                            
+},
+{
+        .access =       SNDRV_CTL_ELEM_ACCESS_READ,
+        .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
+        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
+        .info =         snd_hdsp_control_spdif_mask_info,
+        .get =          snd_hdsp_control_spdif_mask_get,
+        .private_value = IEC958_AES0_NONAUDIO |
+                         IEC958_AES0_PROFESSIONAL |
+                         IEC958_AES0_PRO_EMPHASIS,
+},
+HDSP_MIXER("Mixer", 0),
+HDSP_SPDIF_IN("IEC958 Input Connector", 0),
+HDSP_SPDIF_OUT("IEC958 Output also on ADAT1", 0),
+HDSP_SPDIF_PROFESSIONAL("IEC958 Professional Bit", 0),
+HDSP_SPDIF_EMPHASIS("IEC958 Emphasis Bit", 0),
+HDSP_SPDIF_NON_AUDIO("IEC958 Non-audio Bit", 0),
+/* 'Sample Clock Source' complies with the alsa control naming scheme */ 
+HDSP_CLOCK_SOURCE("Sample Clock Source", 0),
+HDSP_SYSTEM_CLOCK_MODE("System Clock Mode", 0),
+HDSP_PREF_SYNC_REF("Preferred Sync Reference", 0),
+HDSP_AUTOSYNC_REF("AutoSync Reference", 0),
+HDSP_SPDIF_SAMPLE_RATE("SPDIF Sample Rate", 0),
+HDSP_SYSTEM_SAMPLE_RATE("System Sample Rate", 0),
+/* 'External Rate' complies with the alsa control naming scheme */
+HDSP_AUTOSYNC_SAMPLE_RATE("External Rate", 0),
+HDSP_WC_SYNC_CHECK("Word Clock Lock Status", 0),
+HDSP_SPDIF_SYNC_CHECK("SPDIF Lock Status", 0),
+HDSP_ADATSYNC_SYNC_CHECK("ADAT Sync Lock Status", 0),
+HDSP_LINE_OUT("Line Out", 0),
+HDSP_PRECISE_POINTER("Precise Pointer", 0),
+HDSP_USE_MIDI_TASKLET("Use Midi Tasklet", 0),
+};
+
+static snd_kcontrol_new_t snd_hdsp_96xx_aeb = HDSP_AEB("Analog Extension Board", 0);
+static snd_kcontrol_new_t snd_hdsp_adat_sync_check = HDSP_ADAT_SYNC_CHECK;
+
+static int snd_hdsp_create_controls(snd_card_t *card, hdsp_t *hdsp)
+{
+        unsigned int idx;
+        int err;
+        snd_kcontrol_t *kctl;
+
+        for (idx = 0; idx < ARRAY_SIZE(snd_hdsp_controls); idx++) {
+                if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_hdsp_controls[idx], hdsp))) < 0) {
+                        return err;
+                }
+                if (idx == 1)   /* IEC958 (S/PDIF) Stream */
+                        hdsp->spdif_ctl = kctl;
+        }
+
+        /* ADAT SyncCheck status */
+        snd_hdsp_adat_sync_check.name = "ADAT Lock Status";
+        snd_hdsp_adat_sync_check.index = 1;
+        if ((err = snd_ctl_add (card, kctl = snd_ctl_new1(&snd_hdsp_adat_sync_check, hdsp)))) {
+                return err;
+        }       
+        if (hdsp->io_type == Digiface || hdsp->io_type == H9652) {
+                for (idx = 1; idx < 3; ++idx) {
+                        snd_hdsp_adat_sync_check.index = idx+1;
+                        if ((err = snd_ctl_add (card, kctl = snd_ctl_new1(&snd_hdsp_adat_sync_check, hdsp)))) {
+                                return err;
+                        }
+                }
+        }
+        
+        /* DA, AD and Phone gain and XLR breakout cable controls for H9632 cards */
+        if (hdsp->io_type == H9632) {
+                for (idx = 0; idx < ARRAY_SIZE(snd_hdsp_9632_controls); idx++) {
+                        if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_hdsp_9632_controls[idx], hdsp))) < 0) {
+                                return err;
+                        }
+                }
+        }
+
+        /* AEB control for H96xx card */
+        if (hdsp->io_type == H9632 || hdsp->io_type == H9652) {
+                if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_hdsp_96xx_aeb, hdsp))) < 0) {
+                                return err;
+                }       
+        }
+
+        return 0;
+}
+
+/*------------------------------------------------------------
+   /proc interface 
+ ------------------------------------------------------------*/
+
+static void
+snd_hdsp_proc_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+{
+        hdsp_t *hdsp = (hdsp_t *) entry->private_data;
+        unsigned int status;
+        unsigned int status2;
+        char *pref_sync_ref;
+        char *autosync_ref;
+        char *system_clock_mode;
+        char *clock_source;
+        int x;
+
+        if (hdsp_check_for_iobox (hdsp)) {
+                snd_iprintf(buffer, "No I/O box connected.\nPlease connect one and upload firmware.\n");
+                return;
+        }
+
+        if (hdsp_check_for_firmware(hdsp)) {
+                if (hdsp->state & HDSP_FirmwareCached) {
+                        if (snd_hdsp_load_firmware_from_cache(hdsp) != 0) {
+                                snd_iprintf(buffer, "Firmware loading from cache failed, please upload manually.\n");
+                                return;
+                        }
+                } else {
+                        snd_iprintf(buffer, "No firmware loaded nor cached, please upload firmware.\n");
+                        return;
+                }
+        }
+        
+        status = hdsp_read(hdsp, HDSP_statusRegister);
+        status2 = hdsp_read(hdsp, HDSP_status2Register);
+
+        snd_iprintf(buffer, "%s (Card #%d)\n", hdsp->card_name, hdsp->card->number + 1);
+        snd_iprintf(buffer, "Buffers: capture %p playback %p\n",
+                    hdsp->capture_buffer, hdsp->playback_buffer);
+        snd_iprintf(buffer, "IRQ: %d Registers bus: 0x%lx VM: 0x%lx\n",
+                    hdsp->irq, hdsp->port, (unsigned long)hdsp->iobase);
+        snd_iprintf(buffer, "Control register: 0x%x\n", hdsp->control_register);
+        snd_iprintf(buffer, "Control2 register: 0x%x\n", hdsp->control2_register);
+        snd_iprintf(buffer, "Status register: 0x%x\n", status);
+        snd_iprintf(buffer, "Status2 register: 0x%x\n", status2);
+        snd_iprintf(buffer, "FIFO status: %d\n", hdsp_read(hdsp, HDSP_fifoStatus) & 0xff);
+        snd_iprintf(buffer, "MIDI1 Output status: 0x%x\n", hdsp_read(hdsp, HDSP_midiStatusOut0));
+        snd_iprintf(buffer, "MIDI1 Input status: 0x%x\n", hdsp_read(hdsp, HDSP_midiStatusIn0));
+        snd_iprintf(buffer, "MIDI2 Output status: 0x%x\n", hdsp_read(hdsp, HDSP_midiStatusOut1));
+        snd_iprintf(buffer, "MIDI2 Input status: 0x%x\n", hdsp_read(hdsp, HDSP_midiStatusIn1));
+        snd_iprintf(buffer, "Use Midi Tasklet: %s\n", hdsp->use_midi_tasklet ? "on" : "off");
+
+        snd_iprintf(buffer, "\n");
+
+        x = 1 << (6 + hdsp_decode_latency(hdsp->control_register & HDSP_LatencyMask));
+
+        snd_iprintf(buffer, "Buffer Size (Latency): %d samples (2 periods of %lu bytes)\n", x, (unsigned long) hdsp->period_bytes);
+        snd_iprintf(buffer, "Hardware pointer (frames): %ld\n", hdsp_hw_pointer(hdsp));
+        snd_iprintf(buffer, "Precise pointer: %s\n", hdsp->precise_ptr ? "on" : "off");
+        snd_iprintf(buffer, "Line out: %s\n", (hdsp->control_register & HDSP_LineOut) ? "on" : "off");
+
+        snd_iprintf(buffer, "Firmware version: %d\n", (status2&HDSP_version0)|(status2&HDSP_version1)<<1|(status2&HDSP_version2)<<2);
+
+        snd_iprintf(buffer, "\n");
+
+
+        switch (hdsp_clock_source(hdsp)) {
+        case HDSP_CLOCK_SOURCE_AUTOSYNC:
+                clock_source = "AutoSync";
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_32KHZ:
+                clock_source = "Internal 32 kHz";
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_44_1KHZ:
+                clock_source = "Internal 44.1 kHz";
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_48KHZ:
+                clock_source = "Internal 48 kHz";
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_64KHZ:
+                clock_source = "Internal 64 kHz";
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_88_2KHZ:
+                clock_source = "Internal 88.2 kHz";
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_96KHZ:
+                clock_source = "Internal 96 kHz";
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_128KHZ:
+                clock_source = "Internal 128 kHz";
+                break;
+        case HDSP_CLOCK_SOURCE_INTERNAL_176_4KHZ:
+                clock_source = "Internal 176.4 kHz";
+                break;
+                case HDSP_CLOCK_SOURCE_INTERNAL_192KHZ:
+                clock_source = "Internal 192 kHz";
+                break;  
+        default:
+                clock_source = "Error";         
+        }
+        snd_iprintf (buffer, "Sample Clock Source: %s\n", clock_source);
+                        
+        if (hdsp_system_clock_mode(hdsp)) {
+                system_clock_mode = "Slave";
+        } else {
+                system_clock_mode = "Master";
+        }
+        
+        switch (hdsp_pref_sync_ref (hdsp)) {
+        case HDSP_SYNC_FROM_WORD:
+                pref_sync_ref = "Word Clock";
+                break;
+        case HDSP_SYNC_FROM_ADAT_SYNC:
+                pref_sync_ref = "ADAT Sync";
+                break;
+        case HDSP_SYNC_FROM_SPDIF:
+                pref_sync_ref = "SPDIF";
+                break;
+        case HDSP_SYNC_FROM_ADAT1:
+                pref_sync_ref = "ADAT1";
+                break;
+        case HDSP_SYNC_FROM_ADAT2:
+                pref_sync_ref = "ADAT2";
+                break;
+        case HDSP_SYNC_FROM_ADAT3:
+                pref_sync_ref = "ADAT3";
+                break;
+        default:
+                pref_sync_ref = "Word Clock";
+                break;
+        }
+        snd_iprintf (buffer, "Preferred Sync Reference: %s\n", pref_sync_ref);
+        
+        switch (hdsp_autosync_ref (hdsp)) {
+        case HDSP_AUTOSYNC_FROM_WORD:
+                autosync_ref = "Word Clock";
+                break;
+        case HDSP_AUTOSYNC_FROM_ADAT_SYNC:
+                autosync_ref = "ADAT Sync";
+                break;
+        case HDSP_AUTOSYNC_FROM_SPDIF:
+                autosync_ref = "SPDIF";
+                break;
+        case HDSP_AUTOSYNC_FROM_NONE:
+                autosync_ref = "None";
+                break;  
+        case HDSP_AUTOSYNC_FROM_ADAT1:
+                autosync_ref = "ADAT1";
+                break;
+        case HDSP_AUTOSYNC_FROM_ADAT2:
+                autosync_ref = "ADAT2";
+                break;
+        case HDSP_AUTOSYNC_FROM_ADAT3:
+                autosync_ref = "ADAT3";
+                break;
+        default:
+                autosync_ref = "---";
+                break;
+        }
+        snd_iprintf (buffer, "AutoSync Reference: %s\n", autosync_ref);
+        
+        snd_iprintf (buffer, "AutoSync Frequency: %d\n", hdsp_external_sample_rate(hdsp));
+        
+        snd_iprintf (buffer, "System Clock Mode: %s\n", system_clock_mode);
+
+        snd_iprintf (buffer, "System Clock Frequency: %d\n", hdsp->system_sample_rate);
+                
+        snd_iprintf(buffer, "\n");
+
+        switch (hdsp_spdif_in(hdsp)) {
+        case HDSP_SPDIFIN_OPTICAL:
+                snd_iprintf(buffer, "IEC958 input: Optical\n");
+                break;
+        case HDSP_SPDIFIN_COAXIAL:
+                snd_iprintf(buffer, "IEC958 input: Coaxial\n");
+                break;
+        case HDSP_SPDIFIN_INTERNAL:
+                snd_iprintf(buffer, "IEC958 input: Internal\n");
+                break;
+        case HDSP_SPDIFIN_AES:
+                snd_iprintf(buffer, "IEC958 input: AES\n");
+                break;
+        default:
+                snd_iprintf(buffer, "IEC958 input: ???\n");
+                break;
+        }
+        
+        if (hdsp->control_register & HDSP_SPDIFOpticalOut) {
+                snd_iprintf(buffer, "IEC958 output: Coaxial & ADAT1\n");
+        } else {
+                snd_iprintf(buffer, "IEC958 output: Coaxial only\n");
+        }
+
+        if (hdsp->control_register & HDSP_SPDIFProfessional) {
+                snd_iprintf(buffer, "IEC958 quality: Professional\n");
+        } else {
+                snd_iprintf(buffer, "IEC958 quality: Consumer\n");
+        }
+
+        if (hdsp->control_register & HDSP_SPDIFEmphasis) {
+                snd_iprintf(buffer, "IEC958 emphasis: on\n");
+        } else {
+                snd_iprintf(buffer, "IEC958 emphasis: off\n");
+        }
+
+        if (hdsp->control_register & HDSP_SPDIFNonAudio) {
+                snd_iprintf(buffer, "IEC958 NonAudio: on\n");
+        } else {
+                snd_iprintf(buffer, "IEC958 NonAudio: off\n");
+        }
+        if ((x = hdsp_spdif_sample_rate (hdsp)) != 0) {
+                snd_iprintf (buffer, "IEC958 sample rate: %d\n", x);
+        } else {
+                snd_iprintf (buffer, "IEC958 sample rate: Error flag set\n");
+        }
+
+        snd_iprintf(buffer, "\n");
+
+        /* Sync Check */
+        x = status & HDSP_Sync0;
+        if (status & HDSP_Lock0) {
+                snd_iprintf(buffer, "ADAT1: %s\n", x ? "Sync" : "Lock");
+        } else {
+                snd_iprintf(buffer, "ADAT1: No Lock\n");
+        }
+
+        switch (hdsp->io_type) {
+        case Digiface:
+        case H9652:
+                x = status & HDSP_Sync1;
+                if (status & HDSP_Lock1) {
+                        snd_iprintf(buffer, "ADAT2: %s\n", x ? "Sync" : "Lock");
+                } else {
+                        snd_iprintf(buffer, "ADAT2: No Lock\n");
+                }
+                x = status & HDSP_Sync2;
+                if (status & HDSP_Lock2) {
+                        snd_iprintf(buffer, "ADAT3: %s\n", x ? "Sync" : "Lock");
+                } else {
+                        snd_iprintf(buffer, "ADAT3: No Lock\n");
+                }
+        default:
+                /* relax */
+                break;
+        }
+
+        x = status & HDSP_SPDIFSync;
+        if (status & HDSP_SPDIFErrorFlag) {
+                snd_iprintf (buffer, "SPDIF: No Lock\n");
+        } else {
+                snd_iprintf (buffer, "SPDIF: %s\n", x ? "Sync" : "Lock");
+        }
+        
+        x = status2 & HDSP_wc_sync;
+        if (status2 & HDSP_wc_lock) {
+                snd_iprintf (buffer, "Word Clock: %s\n", x ? "Sync" : "Lock");
+        } else {
+                snd_iprintf (buffer, "Word Clock: No Lock\n");
+        }
+        
+        x = status & HDSP_TimecodeSync;
+        if (status & HDSP_TimecodeLock) {
+                snd_iprintf(buffer, "ADAT Sync: %s\n", x ? "Sync" : "Lock");
+        } else {
+                snd_iprintf(buffer, "ADAT Sync: No Lock\n");
+        }
+
+        snd_iprintf(buffer, "\n");
+        
+        /* Informations about H9632 specific controls */
+        if (hdsp->io_type == H9632) {
+                char *tmp;
+        
+                switch (hdsp_ad_gain(hdsp)) {
+                case 0:
+                        tmp = "-10 dBV";
+                        break;
+                case 1:
+                        tmp = "+4 dBu";
+                        break;
+                default:
+                        tmp = "Lo Gain";
+                        break;
+                }
+                snd_iprintf(buffer, "AD Gain : %s\n", tmp);
+
+                switch (hdsp_da_gain(hdsp)) {
+                case 0:
+                        tmp = "Hi Gain";
+                        break;
+                case 1:
+                        tmp = "+4 dBu";
+                        break;
+                default:
+                        tmp = "-10 dBV";
+                        break;
+                }
+                snd_iprintf(buffer, "DA Gain : %s\n", tmp);
+                
+                switch (hdsp_phone_gain(hdsp)) {
+                case 0:
+                        tmp = "0 dB";
+                        break;
+                case 1:
+                        tmp = "-6 dB";
+                        break;
+                default:
+                        tmp = "-12 dB";
+                        break;
+                }
+                snd_iprintf(buffer, "Phones Gain : %s\n", tmp);
+
+                snd_iprintf(buffer, "XLR Breakout Cable : %s\n", hdsp_xlr_breakout_cable(hdsp) ? "yes" : "no"); 
+                
+                if (hdsp->control_register & HDSP_AnalogExtensionBoard) {
+                        snd_iprintf(buffer, "AEB : on (ADAT1 internal)\n");
+                } else {
+                        snd_iprintf(buffer, "AEB : off (ADAT1 external)\n");
+                }
+                snd_iprintf(buffer, "\n");
+        }
+
+}
+
+static void __devinit snd_hdsp_proc_init(hdsp_t *hdsp)
+{
+        snd_info_entry_t *entry;
+
+        if (! snd_card_proc_new(hdsp->card, "hdsp", &entry))
+                snd_info_set_text_ops(entry, hdsp, 1024, snd_hdsp_proc_read);
+}
+
+static void snd_hdsp_free_buffers(hdsp_t *hdsp)
+{
+        snd_hammerfall_free_buffer(&hdsp->capture_dma_buf, hdsp->pci);
+        snd_hammerfall_free_buffer(&hdsp->playback_dma_buf, hdsp->pci);
+}
+
+static int __devinit snd_hdsp_initialize_memory(hdsp_t *hdsp)
+{
+        unsigned long pb_bus, cb_bus;
+
+        if (snd_hammerfall_get_buffer(hdsp->pci, &hdsp->capture_dma_buf, HDSP_DMA_AREA_BYTES) < 0 ||
+            snd_hammerfall_get_buffer(hdsp->pci, &hdsp->playback_dma_buf, HDSP_DMA_AREA_BYTES) < 0) {
+                if (hdsp->capture_dma_buf.area)
+                        snd_dma_free_pages(&hdsp->capture_dma_buf);
+                printk(KERN_ERR "%s: no buffers available\n", hdsp->card_name);
+                return -ENOMEM;
+        }
+
+        /* Align to bus-space 64K boundary */
+
+        cb_bus = (hdsp->capture_dma_buf.addr + 0xFFFF) & ~0xFFFFl;
+        pb_bus = (hdsp->playback_dma_buf.addr + 0xFFFF) & ~0xFFFFl;
+
+        /* Tell the card where it is */
+
+        hdsp_write(hdsp, HDSP_inputBufferAddress, cb_bus);
+        hdsp_write(hdsp, HDSP_outputBufferAddress, pb_bus);
+
+        hdsp->capture_buffer = hdsp->capture_dma_buf.area + (cb_bus - hdsp->capture_dma_buf.addr);
+        hdsp->playback_buffer = hdsp->playback_dma_buf.area + (pb_bus - hdsp->playback_dma_buf.addr);
+
+        return 0;
+}
+
+static int snd_hdsp_set_defaults(hdsp_t *hdsp)
+{
+        unsigned int i;
+
+        /* ASSUMPTION: hdsp->lock is either held, or
+           there is no need to hold it (e.g. during module
+           initalization).
+         */
+
+        /* set defaults:
+
+           SPDIF Input via Coax 
+           Master clock mode
+           maximum latency (7 => 2^7 = 8192 samples, 64Kbyte buffer,
+                            which implies 2 4096 sample, 32Kbyte periods).
+           Enable line out.                         
+         */
+
+        hdsp->control_register = HDSP_ClockModeMaster | 
+                                 HDSP_SPDIFInputCoaxial | 
+                                 hdsp_encode_latency(7) | 
+                                 HDSP_LineOut;
+        
+
+        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+
+#ifdef SNDRV_BIG_ENDIAN
+        hdsp->control2_register = HDSP_BIGENDIAN_MODE;
+#else
+        hdsp->control2_register = 0;
+#endif
+        if (hdsp->io_type == H9652) {
+                snd_hdsp_9652_enable_mixer (hdsp);
+        } else {
+            hdsp_write (hdsp, HDSP_control2Reg, hdsp->control2_register);
+        } 
+
+        hdsp_reset_hw_pointer(hdsp);
+        hdsp_compute_period_size(hdsp);
+
+        /* silence everything */
+        
+        for (i = 0; i < HDSP_MATRIX_MIXER_SIZE; ++i) {
+                hdsp->mixer_matrix[i] = MINUS_INFINITY_GAIN;
+        }
+
+        for (i = 0; i < ((hdsp->io_type == H9652 || hdsp->io_type == H9632) ? 1352 : HDSP_MATRIX_MIXER_SIZE); ++i) {
+                if (hdsp_write_gain (hdsp, i, MINUS_INFINITY_GAIN)) {
+                        return -EIO;
+                }
+        }
+        
+        /* H9632 specific defaults */
+        if (hdsp->io_type == H9632) {
+                hdsp->control_register |= (HDSP_DAGainPlus4dBu | HDSP_ADGainPlus4dBu | HDSP_PhoneGain0dB);
+                hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+        }
+
+        /* set a default rate so that the channel map is set up.
+         */
+
+        hdsp_set_rate(hdsp, 48000, 1);
+
+        return 0;
+}
+
+static void hdsp_midi_tasklet(unsigned long arg)
+{
+        hdsp_t *hdsp = (hdsp_t *)arg;
+        
+        if (hdsp->midi[0].pending) {
+                snd_hdsp_midi_input_read (&hdsp->midi[0]);
+        }
+        if (hdsp->midi[1].pending) {
+                snd_hdsp_midi_input_read (&hdsp->midi[1]);
+        }
+} 
+
+static irqreturn_t snd_hdsp_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        hdsp_t *hdsp = (hdsp_t *) dev_id;
+        unsigned int status;
+        int audio;
+        int midi0;
+        int midi1;
+        unsigned int midi0status;
+        unsigned int midi1status;
+        int schedule = 0;
+        
+        status = hdsp_read(hdsp, HDSP_statusRegister);
+
+        audio = status & HDSP_audioIRQPending;
+        midi0 = status & HDSP_midi0IRQPending;
+        midi1 = status & HDSP_midi1IRQPending;
+
+        if (!audio && !midi0 && !midi1) {
+                return IRQ_NONE;
+        }
+
+        hdsp_write(hdsp, HDSP_interruptConfirmation, 0);
+
+        midi0status = hdsp_read (hdsp, HDSP_midiStatusIn0) & 0xff;
+        midi1status = hdsp_read (hdsp, HDSP_midiStatusIn1) & 0xff;
+        
+        if (audio) {
+                if (hdsp->capture_substream) {
+                        snd_pcm_period_elapsed(hdsp->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
+                }
+                
+                if (hdsp->playback_substream) {
+                        snd_pcm_period_elapsed(hdsp->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream);
+                }
+        }
+        
+        if (midi0 && midi0status) {
+                if (hdsp->use_midi_tasklet) {
+                        /* we disable interrupts for this input until processing is done */
+                        hdsp->control_register &= ~HDSP_Midi0InterruptEnable;
+                        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+                        hdsp->midi[0].pending = 1;
+                        schedule = 1;
+                } else {
+                        snd_hdsp_midi_input_read (&hdsp->midi[0]);
+                }
+        }
+        if (hdsp->io_type != Multiface && hdsp->io_type != H9632 && midi1 && midi1status) {
+                if (hdsp->use_midi_tasklet) {
+                        /* we disable interrupts for this input until processing is done */
+                        hdsp->control_register &= ~HDSP_Midi1InterruptEnable;
+                        hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register);
+                        hdsp->midi[1].pending = 1;
+                        schedule = 1;
+                } else {
+                        snd_hdsp_midi_input_read (&hdsp->midi[1]);
+                }
+        }
+        if (hdsp->use_midi_tasklet && schedule)
+                tasklet_hi_schedule(&hdsp->midi_tasklet);
+        return IRQ_HANDLED;
+}
+
+static snd_pcm_uframes_t snd_hdsp_hw_pointer(snd_pcm_substream_t *substream)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        return hdsp_hw_pointer(hdsp);
+}
+
+static char *hdsp_channel_buffer_location(hdsp_t *hdsp,
+                                             int stream,
+                                             int channel)
+
+{
+        int mapped_channel;
+
+        snd_assert(channel >= 0 && channel < hdsp->max_channels, return NULL);
+        
+        if ((mapped_channel = hdsp->channel_map[channel]) < 0) {
+                return NULL;
+        }
+        
+        if (stream == SNDRV_PCM_STREAM_CAPTURE) {
+                return hdsp->capture_buffer + (mapped_channel * HDSP_CHANNEL_BUFFER_BYTES);
+        } else {
+                return hdsp->playback_buffer + (mapped_channel * HDSP_CHANNEL_BUFFER_BYTES);
+        }
+}
+
+static int snd_hdsp_playback_copy(snd_pcm_substream_t *substream, int channel,
+                                  snd_pcm_uframes_t pos, void __user *src, snd_pcm_uframes_t count)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        char *channel_buf;
+
+        snd_assert(pos + count <= HDSP_CHANNEL_BUFFER_BYTES / 4, return -EINVAL);
+
+        channel_buf = hdsp_channel_buffer_location (hdsp, substream->pstr->stream, channel);
+        snd_assert(channel_buf != NULL, return -EIO);
+        if (copy_from_user(channel_buf + pos * 4, src, count * 4))
+                return -EFAULT;
+        return count;
+}
+
+static int snd_hdsp_capture_copy(snd_pcm_substream_t *substream, int channel,
+                                 snd_pcm_uframes_t pos, void __user *dst, snd_pcm_uframes_t count)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        char *channel_buf;
+
+        snd_assert(pos + count <= HDSP_CHANNEL_BUFFER_BYTES / 4, return -EINVAL);
+
+        channel_buf = hdsp_channel_buffer_location (hdsp, substream->pstr->stream, channel);
+        snd_assert(channel_buf != NULL, return -EIO);
+        if (copy_to_user(dst, channel_buf + pos * 4, count * 4))
+                return -EFAULT;
+        return count;
+}
+
+static int snd_hdsp_hw_silence(snd_pcm_substream_t *substream, int channel,
+                                  snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        char *channel_buf;
+
+        channel_buf = hdsp_channel_buffer_location (hdsp, substream->pstr->stream, channel);
+        snd_assert(channel_buf != NULL, return -EIO);
+        memset(channel_buf + pos * 4, 0, count * 4);
+        return count;
+}
+
+static int snd_hdsp_reset(snd_pcm_substream_t *substream)
+{
+        snd_pcm_runtime_t *runtime = substream->runtime;
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        snd_pcm_substream_t *other;
+        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+                other = hdsp->capture_substream;
+        else
+                other = hdsp->playback_substream;
+        if (hdsp->running)
+                runtime->status->hw_ptr = hdsp_hw_pointer(hdsp);
+        else
+                runtime->status->hw_ptr = 0;
+        if (other) {
+                struct list_head *pos;
+                snd_pcm_substream_t *s;
+                snd_pcm_runtime_t *oruntime = other->runtime;
+                snd_pcm_group_for_each(pos, substream) {
+                        s = snd_pcm_group_substream_entry(pos);
+                        if (s == other) {
+                                oruntime->status->hw_ptr = runtime->status->hw_ptr;
+                                break;
+                        }
+                }
+        }
+        return 0;
+}
+
+static int snd_hdsp_hw_params(snd_pcm_substream_t *substream,
+                                 snd_pcm_hw_params_t *params)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        int err;
+        pid_t this_pid;
+        pid_t other_pid;
+
+        if (hdsp_check_for_iobox (hdsp)) {
+                return -EIO;
+        }
+
+        if (hdsp_check_for_firmware(hdsp)) {
+                if (hdsp->state & HDSP_FirmwareCached) {
+                        if (snd_hdsp_load_firmware_from_cache(hdsp) != 0) {
+                                snd_printk("Hammerfall-DSP: Firmware loading from cache failed, please upload manually.\n");
+                        }
+                } else {
+                        snd_printk("Hammerfall-DSP: No firmware loaded nor cached, please upload firmware.\n");
+                }
+                return -EIO;
+        }
+
+        spin_lock_irq(&hdsp->lock);
+
+        if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+                hdsp->control_register &= ~(HDSP_SPDIFProfessional | HDSP_SPDIFNonAudio | HDSP_SPDIFEmphasis);
+                hdsp_write(hdsp, HDSP_controlRegister, hdsp->control_register |= hdsp->creg_spdif_stream);
+                this_pid = hdsp->playback_pid;
+                other_pid = hdsp->capture_pid;
+        } else {
+                this_pid = hdsp->capture_pid;
+                other_pid = hdsp->playback_pid;
+        }
+
+        if ((other_pid > 0) && (this_pid != other_pid)) {
+
+                /* The other stream is open, and not by the same
+                   task as this one. Make sure that the parameters
+                   that matter are the same.
+                 */
+
+                if (params_rate(params) != hdsp->system_sample_rate) {
+                        spin_unlock_irq(&hdsp->lock);
+                        _snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
+                        return -EBUSY;
+                }
+
+                if (params_period_size(params) != hdsp->period_bytes / 4) {
+                        spin_unlock_irq(&hdsp->lock);
+                        _snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
+                        return -EBUSY;
+                }
+
+                /* We're fine. */
+
+                spin_unlock_irq(&hdsp->lock);
+                return 0;
+
+        } else {
+                spin_unlock_irq(&hdsp->lock);
+        }
+
+        /* how to make sure that the rate matches an externally-set one ?
+         */
+
+        spin_lock_irq(&hdsp->lock);
+        if ((err = hdsp_set_rate(hdsp, params_rate(params), 0)) < 0) {
+                spin_unlock_irq(&hdsp->lock);
+                _snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
+                return err;
+        } else {
+                spin_unlock_irq(&hdsp->lock);
+        }
+
+        if ((err = hdsp_set_interrupt_interval(hdsp, params_period_size(params))) < 0) {
+                _snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
+                return err;
+        }
+
+        return 0;
+}
+
+static int snd_hdsp_channel_info(snd_pcm_substream_t *substream,
+                                    snd_pcm_channel_info_t *info)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        int mapped_channel;
+
+        snd_assert(info->channel < hdsp->max_channels, return -EINVAL);
+
+        if ((mapped_channel = hdsp->channel_map[info->channel]) < 0) {
+                return -EINVAL;
+        }
+
+        info->offset = mapped_channel * HDSP_CHANNEL_BUFFER_BYTES;
+        info->first = 0;
+        info->step = 32;
+        return 0;
+}
+
+static int snd_hdsp_ioctl(snd_pcm_substream_t *substream,
+                             unsigned int cmd, void *arg)
+{
+        switch (cmd) {
+        case SNDRV_PCM_IOCTL1_RESET:
+        {
+                return snd_hdsp_reset(substream);
+        }
+        case SNDRV_PCM_IOCTL1_CHANNEL_INFO:
+        {
+                snd_pcm_channel_info_t *info = arg;
+                return snd_hdsp_channel_info(substream, info);
+        }
+        default:
+                break;
+        }
+
+        return snd_pcm_lib_ioctl(substream, cmd, arg);
+}
+
+static int snd_hdsp_trigger(snd_pcm_substream_t *substream, int cmd)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        snd_pcm_substream_t *other;
+        int running;
+        
+        if (hdsp_check_for_iobox (hdsp)) {
+                return -EIO;
+        }
+
+        if (hdsp_check_for_firmware(hdsp)) {
+                if (hdsp->state & HDSP_FirmwareCached) {
+                        if (snd_hdsp_load_firmware_from_cache(hdsp) != 0) {
+                                snd_printk("Hammerfall-DSP: Firmware loading from cache failed, please upload manually.\n");
+                        }
+                } else {
+                        snd_printk("Hammerfall-DSP: No firmware loaded nor cached, please upload firmware.\n");
+                }
+                return -EIO;
+        }
+
+        spin_lock(&hdsp->lock);
+        running = hdsp->running;
+        switch (cmd) {
+        case SNDRV_PCM_TRIGGER_START:
+                running |= 1 << substream->stream;
+                break;
+        case SNDRV_PCM_TRIGGER_STOP:
+                running &= ~(1 << substream->stream);
+                break;
+        default:
+                snd_BUG();
+                spin_unlock(&hdsp->lock);
+                return -EINVAL;
+        }
+        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+                other = hdsp->capture_substream;
+        else
+                other = hdsp->playback_substream;
+
+        if (other) {
+                struct list_head *pos;
+                snd_pcm_substream_t *s;
+                snd_pcm_group_for_each(pos, substream) {
+                        s = snd_pcm_group_substream_entry(pos);
+                        if (s == other) {
+                                snd_pcm_trigger_done(s, substream);
+                                if (cmd == SNDRV_PCM_TRIGGER_START)
+                                        running |= 1 << s->stream;
+                                else
+                                        running &= ~(1 << s->stream);
+                                goto _ok;
+                        }
+                }
+                if (cmd == SNDRV_PCM_TRIGGER_START) {
+                        if (!(running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) &&
+                            substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+                                hdsp_silence_playback(hdsp);
+                } else {
+                        if (running &&
+                            substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+                                hdsp_silence_playback(hdsp);
+                }
+        } else {
+                if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+                                hdsp_silence_playback(hdsp);
+        }
+ _ok:
+        snd_pcm_trigger_done(substream, substream);
+        if (!hdsp->running && running)
+                hdsp_start_audio(hdsp);
+        else if (hdsp->running && !running)
+                hdsp_stop_audio(hdsp);
+        hdsp->running = running;
+        spin_unlock(&hdsp->lock);
+
+        return 0;
+}
+
+static int snd_hdsp_prepare(snd_pcm_substream_t *substream)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        int result = 0;
+
+        if (hdsp_check_for_iobox (hdsp)) {
+                return -EIO;
+        }
+
+        if (hdsp_check_for_firmware(hdsp)) {
+                if (hdsp->state & HDSP_FirmwareCached) {
+                        if (snd_hdsp_load_firmware_from_cache(hdsp) != 0) {
+                                snd_printk("Hammerfall-DSP: Firmware loading from cache failed, please upload manually.\n");
+                        }
+                } else {
+                        snd_printk("Hammerfall-DSP: No firmware loaded nor cached, please upload firmware.\n");
+                }
+                return -EIO;
+        }
+
+        spin_lock_irq(&hdsp->lock);
+        if (!hdsp->running)
+                hdsp_reset_hw_pointer(hdsp);
+        spin_unlock_irq(&hdsp->lock);
+        return result;
+}
+
+static snd_pcm_hardware_t snd_hdsp_playback_subinfo =
+{
+        .info =                 (SNDRV_PCM_INFO_MMAP |
+                                 SNDRV_PCM_INFO_MMAP_VALID |
+                                 SNDRV_PCM_INFO_NONINTERLEAVED |
+                                 SNDRV_PCM_INFO_SYNC_START |
+                                 SNDRV_PCM_INFO_DOUBLE),
+#ifdef SNDRV_BIG_ENDIAN
+        .formats =              SNDRV_PCM_FMTBIT_S32_BE,
+#else
+        .formats =              SNDRV_PCM_FMTBIT_S32_LE,
+#endif
+        .rates =                (SNDRV_PCM_RATE_32000 |
+                                 SNDRV_PCM_RATE_44100 | 
+                                 SNDRV_PCM_RATE_48000 | 
+                                 SNDRV_PCM_RATE_64000 | 
+                                 SNDRV_PCM_RATE_88200 | 
+                                 SNDRV_PCM_RATE_96000),
+        .rate_min =             32000,
+        .rate_max =             96000,
+        .channels_min =         14,
+        .channels_max =         HDSP_MAX_CHANNELS,
+        .buffer_bytes_max =     HDSP_CHANNEL_BUFFER_BYTES * HDSP_MAX_CHANNELS,
+        .period_bytes_min =     (64 * 4) * 10,
+        .period_bytes_max =     (8192 * 4) * HDSP_MAX_CHANNELS,
+        .periods_min =          2,
+        .periods_max =          2,
+        .fifo_size =            0
+};
+
+static snd_pcm_hardware_t snd_hdsp_capture_subinfo =
+{
+        .info =                 (SNDRV_PCM_INFO_MMAP |
+                                 SNDRV_PCM_INFO_MMAP_VALID |
+                                 SNDRV_PCM_INFO_NONINTERLEAVED |
+                                 SNDRV_PCM_INFO_SYNC_START),
+#ifdef SNDRV_BIG_ENDIAN
+        .formats =              SNDRV_PCM_FMTBIT_S32_BE,
+#else
+        .formats =              SNDRV_PCM_FMTBIT_S32_LE,
+#endif
+        .rates =                (SNDRV_PCM_RATE_32000 |
+                                 SNDRV_PCM_RATE_44100 | 
+                                 SNDRV_PCM_RATE_48000 | 
+                                 SNDRV_PCM_RATE_64000 | 
+                                 SNDRV_PCM_RATE_88200 | 
+                                 SNDRV_PCM_RATE_96000),
+        .rate_min =             32000,
+        .rate_max =             96000,
+        .channels_min =         14,
+        .channels_max =         HDSP_MAX_CHANNELS,
+        .buffer_bytes_max =     HDSP_CHANNEL_BUFFER_BYTES * HDSP_MAX_CHANNELS,
+        .period_bytes_min =     (64 * 4) * 10,
+        .period_bytes_max =     (8192 * 4) * HDSP_MAX_CHANNELS,
+        .periods_min =          2,
+        .periods_max =          2,
+        .fifo_size =            0
+};
+
+static unsigned int hdsp_period_sizes[] = { 64, 128, 256, 512, 1024, 2048, 4096, 8192 };
+
+static snd_pcm_hw_constraint_list_t hdsp_hw_constraints_period_sizes = {
+        .count = ARRAY_SIZE(hdsp_period_sizes),
+        .list = hdsp_period_sizes,
+        .mask = 0
+};
+
+static unsigned int hdsp_9632_sample_rates[] = { 32000, 44100, 48000, 64000, 88200, 96000, 128000, 176400, 192000 };
+
+static snd_pcm_hw_constraint_list_t hdsp_hw_constraints_9632_sample_rates = {
+        .count = ARRAY_SIZE(hdsp_9632_sample_rates),
+        .list = hdsp_9632_sample_rates,
+        .mask = 0
+};
+
+static int snd_hdsp_hw_rule_in_channels(snd_pcm_hw_params_t *params,
+                                        snd_pcm_hw_rule_t *rule)
+{
+        hdsp_t *hdsp = rule->private;
+        snd_interval_t *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+        if (hdsp->io_type == H9632) {
+                unsigned int list[3];
+                list[0] = hdsp->qs_in_channels;
+                list[1] = hdsp->ds_in_channels;
+                list[2] = hdsp->ss_in_channels;
+                return snd_interval_list(c, 3, list, 0);
+        } else {
+                unsigned int list[2];
+                list[0] = hdsp->ds_in_channels;
+                list[1] = hdsp->ss_in_channels;
+                return snd_interval_list(c, 2, list, 0);
+        }
+}
+
+static int snd_hdsp_hw_rule_out_channels(snd_pcm_hw_params_t *params,
+                                        snd_pcm_hw_rule_t *rule)
+{
+        unsigned int list[3];
+        hdsp_t *hdsp = rule->private;
+        snd_interval_t *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+        if (hdsp->io_type == H9632) {
+                list[0] = hdsp->qs_out_channels;
+                list[1] = hdsp->ds_out_channels;
+                list[2] = hdsp->ss_out_channels;
+                return snd_interval_list(c, 3, list, 0);
+        } else {
+                list[0] = hdsp->ds_out_channels;
+                list[1] = hdsp->ss_out_channels;
+        }
+        return snd_interval_list(c, 2, list, 0);
+}
+
+static int snd_hdsp_hw_rule_in_channels_rate(snd_pcm_hw_params_t *params,
+                                             snd_pcm_hw_rule_t *rule)
+{
+        hdsp_t *hdsp = rule->private;
+        snd_interval_t *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+        snd_interval_t *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+        if (r->min > 96000 && hdsp->io_type == H9632) {
+                snd_interval_t t = {
+                        .min = hdsp->qs_in_channels,
+                        .max = hdsp->qs_in_channels,
+                        .integer = 1,
+                };
+                return snd_interval_refine(c, &t);      
+        } else if (r->min > 48000 && r->max <= 96000) {
+                snd_interval_t t = {
+                        .min = hdsp->ds_in_channels,
+                        .max = hdsp->ds_in_channels,
+                        .integer = 1,
+                };
+                return snd_interval_refine(c, &t);
+        } else if (r->max < 64000) {
+                snd_interval_t t = {
+                        .min = hdsp->ss_in_channels,
+                        .max = hdsp->ss_in_channels,
+                        .integer = 1,
+                };
+                return snd_interval_refine(c, &t);
+        }
+        return 0;
+}
+
+static int snd_hdsp_hw_rule_out_channels_rate(snd_pcm_hw_params_t *params,
+                                             snd_pcm_hw_rule_t *rule)
+{
+        hdsp_t *hdsp = rule->private;
+        snd_interval_t *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+        snd_interval_t *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+        if (r->min > 96000 && hdsp->io_type == H9632) {
+                snd_interval_t t = {
+                        .min = hdsp->qs_out_channels,
+                        .max = hdsp->qs_out_channels,
+                        .integer = 1,
+                };
+                return snd_interval_refine(c, &t);      
+        } else if (r->min > 48000 && r->max <= 96000) {
+                snd_interval_t t = {
+                        .min = hdsp->ds_out_channels,
+                        .max = hdsp->ds_out_channels,
+                        .integer = 1,
+                };
+                return snd_interval_refine(c, &t);
+        } else if (r->max < 64000) {
+                snd_interval_t t = {
+                        .min = hdsp->ss_out_channels,
+                        .max = hdsp->ss_out_channels,
+                        .integer = 1,
+                };
+                return snd_interval_refine(c, &t);
+        }
+        return 0;
+}
+
+static int snd_hdsp_hw_rule_rate_out_channels(snd_pcm_hw_params_t *params,
+                                             snd_pcm_hw_rule_t *rule)
+{
+        hdsp_t *hdsp = rule->private;
+        snd_interval_t *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+        snd_interval_t *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+        if (c->min >= hdsp->ss_out_channels) {
+                snd_interval_t t = {
+                        .min = 32000,
+                        .max = 48000,
+                        .integer = 1,
+                };
+                return snd_interval_refine(r, &t);
+        } else if (c->max <= hdsp->qs_out_channels && hdsp->io_type == H9632) {
+                snd_interval_t t = {
+                        .min = 128000,
+                        .max = 192000,
+                        .integer = 1,
+                };
+                return snd_interval_refine(r, &t);
+        } else if (c->max <= hdsp->ds_out_channels) {
+                snd_interval_t t = {
+                        .min = 64000,
+                        .max = 96000,
+                        .integer = 1,
+                };
+                return snd_interval_refine(r, &t);
+        }
+        return 0;
+}
+
+static int snd_hdsp_hw_rule_rate_in_channels(snd_pcm_hw_params_t *params,
+                                             snd_pcm_hw_rule_t *rule)
+{
+        hdsp_t *hdsp = rule->private;
+        snd_interval_t *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
+        snd_interval_t *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
+        if (c->min >= hdsp->ss_in_channels) {
+                snd_interval_t t = {
+                        .min = 32000,
+                        .max = 48000,
+                        .integer = 1,
+                };
+                return snd_interval_refine(r, &t);
+        } else if (c->max <= hdsp->qs_in_channels && hdsp->io_type == H9632) {
+                snd_interval_t t = {
+                        .min = 128000,
+                        .max = 192000,
+                        .integer = 1,
+                };
+                return snd_interval_refine(r, &t);
+        } else if (c->max <= hdsp->ds_in_channels) {
+                snd_interval_t t = {
+                        .min = 64000,
+                        .max = 96000,
+                        .integer = 1,
+                };
+                return snd_interval_refine(r, &t);
+        }
+        return 0;
+}
+
+static int snd_hdsp_playback_open(snd_pcm_substream_t *substream)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        snd_pcm_runtime_t *runtime = substream->runtime;
+
+        if (hdsp_check_for_iobox (hdsp)) {
+                return -EIO;
+        }
+
+        if (hdsp_check_for_firmware(hdsp)) {
+                if (hdsp->state & HDSP_FirmwareCached) {
+                        if (snd_hdsp_load_firmware_from_cache(hdsp) != 0) {
+                                snd_printk("Hammerfall-DSP: Firmware loading from cache failed, please upload manually.\n");
+                        }
+                } else {
+                        snd_printk("Hammerfall-DSP: No firmware loaded nor cached, please upload firmware.\n");
+                }
+                return -EIO;
+        }
+
+        spin_lock_irq(&hdsp->lock);
+
+        snd_pcm_set_sync(substream);
+
+        runtime->hw = snd_hdsp_playback_subinfo;
+        runtime->dma_area = hdsp->playback_buffer;
+        runtime->dma_bytes = HDSP_DMA_AREA_BYTES;
+
+        hdsp->playback_pid = current->pid;
+        hdsp->playback_substream = substream;
+
+        spin_unlock_irq(&hdsp->lock);
+
+        snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
+        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hdsp_hw_constraints_period_sizes);
+        if (hdsp->io_type == H9632) {
+                runtime->hw.channels_min = hdsp->qs_out_channels;
+                runtime->hw.channels_max = hdsp->ss_out_channels;
+                runtime->hw.rate_max = 192000;
+                runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
+                snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hdsp_hw_constraints_9632_sample_rates);
+        }
+        
+        snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+                             snd_hdsp_hw_rule_out_channels, hdsp,
+                             SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+        snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+                             snd_hdsp_hw_rule_out_channels_rate, hdsp,
+                             SNDRV_PCM_HW_PARAM_RATE, -1);
+        snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+                             snd_hdsp_hw_rule_rate_out_channels, hdsp,
+                             SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+
+        hdsp->creg_spdif_stream = hdsp->creg_spdif;
+        hdsp->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+        snd_ctl_notify(hdsp->card, SNDRV_CTL_EVENT_MASK_VALUE |
+                       SNDRV_CTL_EVENT_MASK_INFO, &hdsp->spdif_ctl->id);
+        return 0;
+}
+
+static int snd_hdsp_playback_release(snd_pcm_substream_t *substream)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+
+        spin_lock_irq(&hdsp->lock);
+
+        hdsp->playback_pid = -1;
+        hdsp->playback_substream = NULL;
+
+        spin_unlock_irq(&hdsp->lock);
+
+        hdsp->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
+        snd_ctl_notify(hdsp->card, SNDRV_CTL_EVENT_MASK_VALUE |
+                       SNDRV_CTL_EVENT_MASK_INFO, &hdsp->spdif_ctl->id);
+        return 0;
+}
+
+
+static int snd_hdsp_capture_open(snd_pcm_substream_t *substream)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+        snd_pcm_runtime_t *runtime = substream->runtime;
+
+        if (hdsp_check_for_iobox (hdsp)) {
+                return -EIO;
+        }
+
+        if (hdsp_check_for_firmware(hdsp)) {
+                if (hdsp->state & HDSP_FirmwareCached) {
+                        if (snd_hdsp_load_firmware_from_cache(hdsp) != 0) {
+                                snd_printk("Hammerfall-DSP: Firmware loading from cache failed, please upload manually.\n");
+                        }
+                } else {
+                        snd_printk("Hammerfall-DSP: No firmware loaded nor cached, please upload firmware.\n");
+                }
+                return -EIO;
+        }
+
+        spin_lock_irq(&hdsp->lock);
+
+        snd_pcm_set_sync(substream);
+
+        runtime->hw = snd_hdsp_capture_subinfo;
+        runtime->dma_area = hdsp->capture_buffer;
+        runtime->dma_bytes = HDSP_DMA_AREA_BYTES;
+
+        hdsp->capture_pid = current->pid;
+        hdsp->capture_substream = substream;
+
+        spin_unlock_irq(&hdsp->lock);
+
+        snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
+        snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hdsp_hw_constraints_period_sizes);
+        if (hdsp->io_type == H9632) {
+                runtime->hw.channels_min = hdsp->qs_in_channels;
+                runtime->hw.channels_max = hdsp->ss_in_channels;
+                runtime->hw.rate_max = 192000;
+                runtime->hw.rates = SNDRV_PCM_RATE_KNOT;
+                snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hdsp_hw_constraints_9632_sample_rates);
+        }
+        snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+                             snd_hdsp_hw_rule_in_channels, hdsp,
+                             SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+        snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
+                             snd_hdsp_hw_rule_in_channels_rate, hdsp,
+                             SNDRV_PCM_HW_PARAM_RATE, -1);
+        snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+                             snd_hdsp_hw_rule_rate_in_channels, hdsp,
+                             SNDRV_PCM_HW_PARAM_CHANNELS, -1);
+        return 0;
+}
+
+static int snd_hdsp_capture_release(snd_pcm_substream_t *substream)
+{
+        hdsp_t *hdsp = snd_pcm_substream_chip(substream);
+
+        spin_lock_irq(&hdsp->lock);
+
+        hdsp->capture_pid = -1;
+        hdsp->capture_substream = NULL;
+
+        spin_unlock_irq(&hdsp->lock);
+        return 0;
+}
+
+static int snd_hdsp_hwdep_dummy_op(snd_hwdep_t *hw, struct file *file)
+{
+        /* we have nothing to initialize but the call is required */
+        return 0;
+}
+
+
+/* helper functions for copying meter values */
+static inline int copy_u32_le(void __user *dest, void __iomem *src)
+{
+        u32 val = readl(src);
+        return copy_to_user(dest, &val, 4);
+}
+
+static inline int copy_u64_le(void __user *dest, void __iomem *src_low, void __iomem *src_high)
+{
+        u32 rms_low, rms_high;
+        u64 rms;
+        rms_low = readl(src_low);
+        rms_high = readl(src_high);
+        rms = ((u64)rms_high << 32) | rms_low;
+        return copy_to_user(dest, &rms, 8);
+}
+
+static inline int copy_u48_le(void __user *dest, void __iomem *src_low, void __iomem *src_high)
+{
+        u32 rms_low, rms_high;
+        u64 rms;
+        rms_low = readl(src_low) & 0xffffff00;
+        rms_high = readl(src_high) & 0xffffff00;
+        rms = ((u64)rms_high << 32) | rms_low;
+        return copy_to_user(dest, &rms, 8);
+}
+
+static int hdsp_9652_get_peak(hdsp_t *hdsp, hdsp_peak_rms_t __user *peak_rms)
+{
+        int doublespeed = 0;
+        int i, j, channels, ofs;
+
+        if (hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DoubleSpeedStatus)
+                doublespeed = 1;
+        channels = doublespeed ? 14 : 26;
+        for (i = 0, j = 0; i < 26; ++i) {
+                if (doublespeed && (i & 4))
+                        continue;
+                ofs = HDSP_9652_peakBase - j * 4;
+                if (copy_u32_le(&peak_rms->input_peaks[i], hdsp->iobase + ofs))
+                        return -EFAULT;
+                ofs -= channels * 4;
+                if (copy_u32_le(&peak_rms->playback_peaks[i], hdsp->iobase + ofs))
+                        return -EFAULT;
+                ofs -= channels * 4;
+                if (copy_u32_le(&peak_rms->output_peaks[i], hdsp->iobase + ofs))
+                        return -EFAULT;
+                ofs = HDSP_9652_rmsBase + j * 8;
+                if (copy_u48_le(&peak_rms->input_rms[i], hdsp->iobase + ofs,
+                                hdsp->iobase + ofs + 4))
+                        return -EFAULT;
+                ofs += channels * 8;
+                if (copy_u48_le(&peak_rms->playback_rms[i], hdsp->iobase + ofs,
+                                hdsp->iobase + ofs + 4))
+                        return -EFAULT;
+                ofs += channels * 8;
+                if (copy_u48_le(&peak_rms->output_rms[i], hdsp->iobase + ofs,
+                                hdsp->iobase + ofs + 4))
+                        return -EFAULT;
+                j++;
+        }
+        return 0;
+}
+
+static int hdsp_9632_get_peak(hdsp_t *hdsp, hdsp_peak_rms_t __user *peak_rms)
+{
+        int i, j;
+        hdsp_9632_meters_t __iomem *m;
+        int doublespeed = 0;
+
+        if (hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DoubleSpeedStatus)
+                doublespeed = 1;
+        m = (hdsp_9632_meters_t __iomem *)(hdsp->iobase+HDSP_9632_metersBase);
+        for (i = 0, j = 0; i < 16; ++i, ++j) {
+                if (copy_u32_le(&peak_rms->input_peaks[i], &m->input_peak[j]))
+                        return -EFAULT;
+                if (copy_u32_le(&peak_rms->playback_peaks[i], &m->playback_peak[j]))
+                        return -EFAULT;
+                if (copy_u32_le(&peak_rms->output_peaks[i], &m->output_peak[j]))
+                        return -EFAULT;
+                if (copy_u64_le(&peak_rms->input_rms[i], &m->input_rms_low[j],
+                                &m->input_rms_high[j]))
+                        return -EFAULT;
+                if (copy_u64_le(&peak_rms->playback_rms[i], &m->playback_rms_low[j],
+                                &m->playback_rms_high[j]))
+                        return -EFAULT;
+                if (copy_u64_le(&peak_rms->output_rms[i], &m->output_rms_low[j],
+                                &m->output_rms_high[j]))
+                        return -EFAULT;
+                if (doublespeed && i == 3) i += 4;
+        }
+        return 0;
+}
+
+static int hdsp_get_peak(hdsp_t *hdsp, hdsp_peak_rms_t __user *peak_rms)
+{
+        int i;
+
+        for (i = 0; i < 26; i++) {
+                if (copy_u32_le(&peak_rms->playback_peaks[i],
+                                hdsp->iobase + HDSP_playbackPeakLevel + i * 4))
+                        return -EFAULT;
+                if (copy_u32_le(&peak_rms->input_peaks[i],
+                                hdsp->iobase + HDSP_inputPeakLevel + i * 4))
+                        return -EFAULT;
+        }
+        for (i = 0; i < 28; i++) {
+                if (copy_u32_le(&peak_rms->output_peaks[i],
+                                hdsp->iobase + HDSP_outputPeakLevel + i * 4))
+                        return -EFAULT;
+        }
+        for (i = 0; i < 26; ++i) {
+                if (copy_u64_le(&peak_rms->playback_rms[i],
+                                hdsp->iobase + HDSP_playbackRmsLevel + i * 8 + 4,
+                                hdsp->iobase + HDSP_playbackRmsLevel + i * 8))
+                        return -EFAULT;
+                if (copy_u64_le(&peak_rms->input_rms[i], 
+                                hdsp->iobase + HDSP_inputRmsLevel + i * 8 + 4,
+                                hdsp->iobase + HDSP_inputRmsLevel + i * 8))
+                        return -EFAULT;
+        }
+        return 0;
+}
+
+static int snd_hdsp_hwdep_ioctl(snd_hwdep_t *hw, struct file *file, unsigned int cmd, unsigned long arg)
+{
+        hdsp_t *hdsp = (hdsp_t *)hw->private_data;      
+        void __user *argp = (void __user *)arg;
+
+        switch (cmd) {
+        case SNDRV_HDSP_IOCTL_GET_PEAK_RMS: {
+                hdsp_peak_rms_t __user *peak_rms = (hdsp_peak_rms_t __user *)arg;
+
+                if (!(hdsp->state & HDSP_FirmwareLoaded)) {
+                        snd_printk(KERN_ERR "Hammerfall-DSP: firmware needs to be uploaded to the card.\n");
+                        return -EINVAL;
+                }
+
+                switch (hdsp->io_type) {
+                case H9652:
+                        return hdsp_9652_get_peak(hdsp, peak_rms);
+                case H9632:
+                        return hdsp_9632_get_peak(hdsp, peak_rms);
+                default:
+                        return hdsp_get_peak(hdsp, peak_rms);
+                }
+        }
+        case SNDRV_HDSP_IOCTL_GET_CONFIG_INFO: {
+                hdsp_config_info_t info;
+                unsigned long flags;
+                int i;
+                
+                if (!(hdsp->state & HDSP_FirmwareLoaded)) {
+                        snd_printk("Hammerfall-DSP: Firmware needs to be uploaded to the card.\n");     
+                        return -EINVAL;
+                }
+                spin_lock_irqsave(&hdsp->lock, flags);
+                info.pref_sync_ref = (unsigned char)hdsp_pref_sync_ref(hdsp);
+                info.wordclock_sync_check = (unsigned char)hdsp_wc_sync_check(hdsp);
+                if (hdsp->io_type != H9632) {
+                    info.adatsync_sync_check = (unsigned char)hdsp_adatsync_sync_check(hdsp);
+                }
+                info.spdif_sync_check = (unsigned char)hdsp_spdif_sync_check(hdsp);
+                for (i = 0; i < ((hdsp->io_type != Multiface && hdsp->io_type != H9632) ? 3 : 1); ++i) {
+                        info.adat_sync_check[i] = (unsigned char)hdsp_adat_sync_check(hdsp, i);
+                }
+                info.spdif_in = (unsigned char)hdsp_spdif_in(hdsp);
+                info.spdif_out = (unsigned char)hdsp_spdif_out(hdsp);
+                info.spdif_professional = (unsigned char)hdsp_spdif_professional(hdsp);
+                info.spdif_emphasis = (unsigned char)hdsp_spdif_emphasis(hdsp);
+                info.spdif_nonaudio = (unsigned char)hdsp_spdif_nonaudio(hdsp);
+                info.spdif_sample_rate = hdsp_spdif_sample_rate(hdsp);
+                info.system_sample_rate = hdsp->system_sample_rate;
+                info.autosync_sample_rate = hdsp_external_sample_rate(hdsp);
+                info.system_clock_mode = (unsigned char)hdsp_system_clock_mode(hdsp);
+                info.clock_source = (unsigned char)hdsp_clock_source(hdsp);
+                info.autosync_ref = (unsigned char)hdsp_autosync_ref(hdsp);
+                info.line_out = (unsigned char)hdsp_line_out(hdsp);
+                if (hdsp->io_type == H9632) {
+                        info.da_gain = (unsigned char)hdsp_da_gain(hdsp);
+                        info.ad_gain = (unsigned char)hdsp_ad_gain(hdsp);
+                        info.phone_gain = (unsigned char)hdsp_phone_gain(hdsp);
+                        info.xlr_breakout_cable = (unsigned char)hdsp_xlr_breakout_cable(hdsp);
+                
+                }
+                if (hdsp->io_type == H9632 || hdsp->io_type == H9652) {
+                        info.analog_extension_board = (unsigned char)hdsp_aeb(hdsp);
+                }
+                spin_unlock_irqrestore(&hdsp->lock, flags);
+                if (copy_to_user(argp, &info, sizeof(info)))
+                        return -EFAULT;
+                break;
+        }
+        case SNDRV_HDSP_IOCTL_GET_9632_AEB: {
+                hdsp_9632_aeb_t h9632_aeb;
+                
+                if (hdsp->io_type != H9632) return -EINVAL;
+                h9632_aeb.aebi = hdsp->ss_in_channels - H9632_SS_CHANNELS;
+                h9632_aeb.aebo = hdsp->ss_out_channels - H9632_SS_CHANNELS;
+                if (copy_to_user(argp, &h9632_aeb, sizeof(h9632_aeb)))
+                        return -EFAULT;
+                break;
+        }
+        case SNDRV_HDSP_IOCTL_GET_VERSION: {
+                hdsp_version_t hdsp_version;
+                int err;
+                
+                if (hdsp->io_type == H9652 || hdsp->io_type == H9632) return -EINVAL;
+                if (hdsp->io_type == Undefined) {
+                        if ((err = hdsp_get_iobox_version(hdsp)) < 0) {
+                                return err;
+                        }
+                }
+                hdsp_version.io_type = hdsp->io_type;
+                hdsp_version.firmware_rev = hdsp->firmware_rev;
+                if ((err = copy_to_user(argp, &hdsp_version, sizeof(hdsp_version)))) {
+                        return -EFAULT;
+                }
+                break;
+        }
+        case SNDRV_HDSP_IOCTL_UPLOAD_FIRMWARE: {
+                hdsp_firmware_t __user *firmware;
+                u32 __user *firmware_data;
+                int err;
+                
+                if (hdsp->io_type == H9652 || hdsp->io_type == H9632) return -EINVAL;
+                /* SNDRV_HDSP_IOCTL_GET_VERSION must have been called */
+                if (hdsp->io_type == Undefined) return -EINVAL;
+
+                if (hdsp->state & (HDSP_FirmwareCached | HDSP_FirmwareLoaded))
+                        return -EBUSY;
+
+                snd_printk("Hammerfall-DSP: initializing firmware upload\n");
+                firmware = (hdsp_firmware_t __user *)argp;
+
+                if (get_user(firmware_data, &firmware->firmware_data)) {
+                        return -EFAULT;
+                }
+                
+                if (hdsp_check_for_iobox (hdsp)) {
+                        return -EIO;
+                }
+
+                if (copy_from_user(hdsp->firmware_cache, firmware_data, sizeof(hdsp->firmware_cache)) != 0) {
+                        return -EFAULT;
+                }
+                
+                hdsp->state |= HDSP_FirmwareCached;
+
+                if ((err = snd_hdsp_load_firmware_from_cache(hdsp)) < 0) {
+                        return err;
+                }
+                
+                if (!(hdsp->state & HDSP_InitializationComplete)) {
+                        if ((err = snd_hdsp_enable_io(hdsp)) < 0) {
+                                return err;
+                        }
+                        
+                        snd_hdsp_initialize_channels(hdsp);             
+                        snd_hdsp_initialize_midi_flush(hdsp);
+            
+                        if ((err = snd_hdsp_create_alsa_devices(hdsp->card, hdsp)) < 0) {
+                                snd_printk("Hammerfall-DSP: error creating alsa devices\n");
+                            return err;
+                        }
+                }
+                break;
+        }
+        case SNDRV_HDSP_IOCTL_GET_MIXER: {
+                hdsp_mixer_t __user *mixer = (hdsp_mixer_t __user *)argp;
+                if (copy_to_user(mixer->matrix, hdsp->mixer_matrix, sizeof(unsigned short)*HDSP_MATRIX_MIXER_SIZE))
+                        return -EFAULT;
+                break;
+        }
+        default:
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static snd_pcm_ops_t snd_hdsp_playback_ops = {
+        .open =         snd_hdsp_playback_open,
+        .close =        snd_hdsp_playback_release,
+        .ioctl =        snd_hdsp_ioctl,
+        .hw_params =    snd_hdsp_hw_params,
+        .prepare =      snd_hdsp_prepare,
+        .trigger =      snd_hdsp_trigger,
+        .pointer =      snd_hdsp_hw_pointer,
+        .copy =         snd_hdsp_playback_copy,
+        .silence =      snd_hdsp_hw_silence,
+};
+
+static snd_pcm_ops_t snd_hdsp_capture_ops = {
+        .open =         snd_hdsp_capture_open,
+        .close =        snd_hdsp_capture_release,
+        .ioctl =        snd_hdsp_ioctl,
+        .hw_params =    snd_hdsp_hw_params,
+        .prepare =      snd_hdsp_prepare,
+        .trigger =      snd_hdsp_trigger,
+        .pointer =      snd_hdsp_hw_pointer,
+        .copy =         snd_hdsp_capture_copy,
+};
+
+static int __devinit snd_hdsp_create_hwdep(snd_card_t *card,
+                                           hdsp_t *hdsp)
+{
+        snd_hwdep_t *hw;
+        int err;
+        
+        if ((err = snd_hwdep_new(card, "HDSP hwdep", 0, &hw)) < 0)
+                return err;
+                
+        hdsp->hwdep = hw;
+        hw->private_data = hdsp;
+        strcpy(hw->name, "HDSP hwdep interface");
+
+        hw->ops.open = snd_hdsp_hwdep_dummy_op;
+        hw->ops.ioctl = snd_hdsp_hwdep_ioctl;
+        hw->ops.release = snd_hdsp_hwdep_dummy_op;
+                
+        return 0;
+}
+
+static int snd_hdsp_create_pcm(snd_card_t *card, hdsp_t *hdsp)
+{
+        snd_pcm_t *pcm;
+        int err;
+
+        if ((err = snd_pcm_new(card, hdsp->card_name, 0, 1, 1, &pcm)) < 0)
+                return err;
+
+        hdsp->pcm = pcm;
+        pcm->private_data = hdsp;
+        strcpy(pcm->name, hdsp->card_name);
+
+        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_hdsp_playback_ops);
+        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_hdsp_capture_ops);
+
+        pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
+
+        return 0;
+}
+
+static void snd_hdsp_9652_enable_mixer (hdsp_t *hdsp)
+{
+        hdsp->control2_register |= HDSP_9652_ENABLE_MIXER;
+        hdsp_write (hdsp, HDSP_control2Reg, hdsp->control2_register);
+}
+
+static int snd_hdsp_enable_io (hdsp_t *hdsp)
+{
+        int i;
+        
+        if (hdsp_fifo_wait (hdsp, 0, 100)) {
+                snd_printk("Hammerfall-DSP: enable_io fifo_wait failed\n");
+                return -EIO;
+        }
+        
+        for (i = 0; i < hdsp->max_channels; ++i) {
+                hdsp_write (hdsp, HDSP_inputEnable + (4 * i), 1);
+                hdsp_write (hdsp, HDSP_outputEnable + (4 * i), 1);
+        }
+        
+        return 0;
+}
+
+static void snd_hdsp_initialize_channels(hdsp_t *hdsp)
+{
+        int status, aebi_channels, aebo_channels;
+        
+        switch (hdsp->io_type) {
+        case Digiface:
+                hdsp->card_name = "RME Hammerfall DSP + Digiface";
+                hdsp->ss_in_channels = hdsp->ss_out_channels = DIGIFACE_SS_CHANNELS;
+                hdsp->ds_in_channels = hdsp->ds_out_channels = DIGIFACE_DS_CHANNELS;
+                break;
+
+        case H9652:
+                hdsp->card_name = "RME Hammerfall HDSP 9652";
+                hdsp->ss_in_channels = hdsp->ss_out_channels = H9652_SS_CHANNELS;
+                hdsp->ds_in_channels = hdsp->ds_out_channels = H9652_DS_CHANNELS;
+                break;
+        
+        case H9632:
+                status = hdsp_read(hdsp, HDSP_statusRegister);
+                /* HDSP_AEBx bits are low when AEB are connected */
+                aebi_channels = (status & HDSP_AEBI) ? 0 : 4;
+                aebo_channels = (status & HDSP_AEBO) ? 0 : 4;
+                hdsp->card_name = "RME Hammerfall HDSP 9632";
+                hdsp->ss_in_channels = H9632_SS_CHANNELS+aebi_channels;
+                hdsp->ds_in_channels = H9632_DS_CHANNELS+aebi_channels;
+                hdsp->qs_in_channels = H9632_QS_CHANNELS+aebi_channels;
+                hdsp->ss_out_channels = H9632_SS_CHANNELS+aebo_channels;
+                hdsp->ds_out_channels = H9632_DS_CHANNELS+aebo_channels;
+                hdsp->qs_out_channels = H9632_QS_CHANNELS+aebo_channels;
+                break;
+
+        case Multiface:
+                hdsp->card_name = "RME Hammerfall DSP + Multiface";
+                hdsp->ss_in_channels = hdsp->ss_out_channels = MULTIFACE_SS_CHANNELS;
+                hdsp->ds_in_channels = hdsp->ds_out_channels = MULTIFACE_DS_CHANNELS;
+                break;
+                
+        default:
+                /* should never get here */
+                break;
+        }
+}
+
+static void snd_hdsp_initialize_midi_flush (hdsp_t *hdsp)
+{
+        snd_hdsp_flush_midi_input (hdsp, 0);
+        snd_hdsp_flush_midi_input (hdsp, 1);
+}
+
+static int snd_hdsp_create_alsa_devices(snd_card_t *card, hdsp_t *hdsp)
+{
+        int err;
+        
+        if ((err = snd_hdsp_create_pcm(card, hdsp)) < 0) {
+                snd_printk("Hammerfall-DSP: Error creating pcm interface\n");
+                return err;
+        }
+        
+
+        if ((err = snd_hdsp_create_midi(card, hdsp, 0)) < 0) {
+                snd_printk("Hammerfall-DSP: Error creating first midi interface\n");
+                return err;
+        }
+
+        if (hdsp->io_type == Digiface || hdsp->io_type == H9652) {
+                if ((err = snd_hdsp_create_midi(card, hdsp, 1)) < 0) {
+                        snd_printk("Hammerfall-DSP: Error creating second midi interface\n");
+                        return err;
+                }
+        }
+
+        if ((err = snd_hdsp_create_controls(card, hdsp)) < 0) {
+                snd_printk("Hammerfall-DSP: Error creating ctl interface\n");
+                return err;
+        }
+
+        snd_hdsp_proc_init(hdsp);
+
+        hdsp->system_sample_rate = -1;
+        hdsp->playback_pid = -1;
+        hdsp->capture_pid = -1;
+        hdsp->capture_substream = NULL;
+        hdsp->playback_substream = NULL;
+
+        if ((err = snd_hdsp_set_defaults(hdsp)) < 0) {
+                snd_printk("Hammerfall-DSP: Error setting default values\n");
+                return err;
+        }
+        
+        if (!(hdsp->state & HDSP_InitializationComplete)) {
+                sprintf(card->longname, "%s at 0x%lx, irq %d", hdsp->card_name, 
+                        hdsp->port, hdsp->irq);
+            
+                if ((err = snd_card_register(card)) < 0) {
+                        snd_printk("Hammerfall-DSP: error registering card\n");
+                        return err;
+                }
+                hdsp->state |= HDSP_InitializationComplete;
+        }
+        
+        return 0;
+}
+
+#ifdef HDSP_FW_LOADER
+/* load firmware via hotplug fw loader */
+static int __devinit hdsp_request_fw_loader(hdsp_t *hdsp)
+{
+        const char *fwfile;
+        const struct firmware *fw;
+        int err;
+                
+        if (hdsp->io_type == H9652 || hdsp->io_type == H9632)
+                return 0;
+        if (hdsp->io_type == Undefined) {
+                if ((err = hdsp_get_iobox_version(hdsp)) < 0)
+                        return err;
+                if (hdsp->io_type == H9652 || hdsp->io_type == H9632)
+                        return 0;
+        }
+        
+        /* caution: max length of firmware filename is 30! */
+        switch (hdsp->io_type) {
+        case Multiface:
+                if (hdsp->firmware_rev == 0xa)
+                        fwfile = "multiface_firmware.bin";
+                else
+                        fwfile = "multiface_firmware_rev11.bin";
+                break;
+        case Digiface:
+                if (hdsp->firmware_rev == 0xa)
+                        fwfile = "digiface_firmware.bin";
+                else
+                        fwfile = "digiface_firmware_rev11.bin";
+                break;
+        default:
+                snd_printk(KERN_ERR "Hammerfall-DSP: invalid io_type %d\n", hdsp->io_type);
+                return -EINVAL;
+        }
+
+        if (request_firmware(&fw, fwfile, &hdsp->pci->dev)) {
+                snd_printk(KERN_ERR "Hammerfall-DSP: cannot load firmware %s\n", fwfile);
+                return -ENOENT;
+        }
+        if (fw->size < sizeof(hdsp->firmware_cache)) {
+                snd_printk(KERN_ERR "Hammerfall-DSP: too short firmware size %d (expected %d)\n",
+                           (int)fw->size, (int)sizeof(hdsp->firmware_cache));
+                release_firmware(fw);
+                return -EINVAL;
+        }
+#ifdef SNDRV_BIG_ENDIAN
+        {
+                int i;
+                u32 *src = (u32*)fw->data;
+                for (i = 0; i < ARRAY_SIZE(hdsp->firmware_cache); i++, src++)
+                        hdsp->firmware_cache[i] = ((*src & 0x000000ff) << 16) |
+                                ((*src & 0x0000ff00) << 8)  |
+                                ((*src & 0x00ff0000) >> 8)  |
+                                ((*src & 0xff000000) >> 16);
+        }
+#else
+        memcpy(hdsp->firmware_cache, fw->data, sizeof(hdsp->firmware_cache));
+#endif
+        release_firmware(fw);
+                
+        hdsp->state |= HDSP_FirmwareCached;
+
+        if ((err = snd_hdsp_load_firmware_from_cache(hdsp)) < 0)
+                return err;
+                
+        if (!(hdsp->state & HDSP_InitializationComplete)) {
+                if ((err = snd_hdsp_enable_io(hdsp)) < 0) {
+                        return err;
+                }
+
+                if ((err = snd_hdsp_create_hwdep(hdsp->card, hdsp)) < 0) {
+                        snd_printk("Hammerfall-DSP: error creating hwdep device\n");
+                        return err;
+                }
+                snd_hdsp_initialize_channels(hdsp);
+                snd_hdsp_initialize_midi_flush(hdsp);
+                if ((err = snd_hdsp_create_alsa_devices(hdsp->card, hdsp)) < 0) {
+                        snd_printk("Hammerfall-DSP: error creating alsa devices\n");
+                        return err;
+                }
+        }
+        return 0;
+}
+#endif
+
+static int __devinit snd_hdsp_create(snd_card_t *card,
+                                     hdsp_t *hdsp)
+{
+        struct pci_dev *pci = hdsp->pci;
+        int err;
+        int is_9652 = 0;
+        int is_9632 = 0;
+
+        hdsp->irq = -1;
+        hdsp->state = 0;
+        hdsp->midi[0].rmidi = NULL;
+        hdsp->midi[1].rmidi = NULL;
+        hdsp->midi[0].input = NULL;
+        hdsp->midi[1].input = NULL;
+        hdsp->midi[0].output = NULL;
+        hdsp->midi[1].output = NULL;
+        hdsp->midi[0].pending = 0;
+        hdsp->midi[1].pending = 0;
+        spin_lock_init(&hdsp->midi[0].lock);
+        spin_lock_init(&hdsp->midi[1].lock);
+        hdsp->iobase = NULL;
+        hdsp->control_register = 0;
+        hdsp->control2_register = 0;
+        hdsp->io_type = Undefined;
+        hdsp->max_channels = 26;
+
+        hdsp->card = card;
+        
+        spin_lock_init(&hdsp->lock);
+
+        tasklet_init(&hdsp->midi_tasklet, hdsp_midi_tasklet, (unsigned long)hdsp);
+        
+        pci_read_config_word(hdsp->pci, PCI_CLASS_REVISION, &hdsp->firmware_rev);
+        hdsp->firmware_rev &= 0xff;
+        
+        /* From Martin Bjoernsen :
+            "It is important that the card's latency timer register in
+            the PCI configuration space is set to a value much larger
+            than 0 by the computer's BIOS or the driver.
+            The windows driver always sets this 8 bit register [...]
+            to its maximum 255 to avoid problems with some computers."
+        */
+        pci_write_config_byte(hdsp->pci, PCI_LATENCY_TIMER, 0xFF);
+        
+        strcpy(card->driver, "H-DSP");
+        strcpy(card->mixername, "Xilinx FPGA");
+
+        if (hdsp->firmware_rev < 0xa) {
+                return -ENODEV;
+        } else if (hdsp->firmware_rev < 0x64) {
+                hdsp->card_name = "RME Hammerfall DSP";
+        } else if (hdsp->firmware_rev < 0x96) {
+                hdsp->card_name = "RME HDSP 9652";
+                is_9652 = 1;
+        } else {
+                hdsp->card_name = "RME HDSP 9632";
+                hdsp->max_channels = 16;
+                is_9632 = 1;    
+        }
+
+        if ((err = pci_enable_device(pci)) < 0) {
+                return err;
+        }
+
+        pci_set_master(hdsp->pci);
+
+        if ((err = pci_request_regions(pci, "hdsp")) < 0)
+                return err;
+        hdsp->port = pci_resource_start(pci, 0);
+        if ((hdsp->iobase = ioremap_nocache(hdsp->port, HDSP_IO_EXTENT)) == NULL) {
+                snd_printk("Hammerfall-DSP: unable to remap region 0x%lx-0x%lx\n", hdsp->port, hdsp->port + HDSP_IO_EXTENT - 1);
+                return -EBUSY;
+        }
+
+        if (request_irq(pci->irq, snd_hdsp_interrupt, SA_INTERRUPT|SA_SHIRQ, "hdsp", (void *)hdsp)) {
+                snd_printk("Hammerfall-DSP: unable to use IRQ %d\n", pci->irq);
+                return -EBUSY;
+        }
+
+        hdsp->irq = pci->irq;
+        hdsp->precise_ptr = 1;
+        hdsp->use_midi_tasklet = 1;
+
+        if ((err = snd_hdsp_initialize_memory(hdsp)) < 0) {
+                return err;
+        }
+        
+        if (!is_9652 && !is_9632) {
+                /* we wait 2 seconds to let freshly inserted cardbus cards do their hardware init */
+                if ((1000 / HZ) < 2000) {
+                        set_current_state(TASK_UNINTERRUPTIBLE);
+                        schedule_timeout((2000 * HZ + 999) / 1000);
+                } else {
+                        mdelay(2000);
+                }
+
+                if ((hdsp_read (hdsp, HDSP_statusRegister) & HDSP_DllError) != 0) {
+#ifdef HDSP_FW_LOADER
+                        if ((err = hdsp_request_fw_loader(hdsp)) < 0) {
+                                /* we don't fail as this can happen
+                                   if userspace is not ready for
+                                   firmware upload
+                                */
+                                snd_printk("Hammerfall-DSP: couldn't get firmware from userspace. try using hdsploader\n");
+                        } else {
+                                /* init is complete, we return */
+                                return 0;
+                        }
+#endif
+                        /* no iobox connected, we defer initialization */
+                        snd_printk("Hammerfall-DSP: card initialization pending : waiting for firmware\n");
+                        if ((err = snd_hdsp_create_hwdep(card, hdsp)) < 0) {
+                                return err;
+                        }
+                        return 0;
+                } else {
+                        snd_printk("Hammerfall-DSP: Firmware already present, initializing card.\n");       
+                        if (hdsp_read(hdsp, HDSP_status2Register) & HDSP_version1) {
+                                hdsp->io_type = Multiface;
+                        } else {
+                                hdsp->io_type = Digiface;
+                        }
+                }
+        }
+        
+        if ((err = snd_hdsp_enable_io(hdsp)) != 0) {
+                return err;
+        }
+        
+        if (is_9652) {
+                hdsp->io_type = H9652;
+        }
+        
+        if (is_9632) {
+                hdsp->io_type = H9632;
+        }
+
+        if ((err = snd_hdsp_create_hwdep(card, hdsp)) < 0) {
+                return err;
+        }
+        
+        snd_hdsp_initialize_channels(hdsp);
+        snd_hdsp_initialize_midi_flush(hdsp);
+
+        hdsp->state |= HDSP_FirmwareLoaded;     
+
+        if ((err = snd_hdsp_create_alsa_devices(card, hdsp)) < 0) {
+                return err;
+        }
+
+        return 0;       
+}
+
+static int snd_hdsp_free(hdsp_t *hdsp)
+{
+        if (hdsp->port) {
+                /* stop the audio, and cancel all interrupts */
+                tasklet_kill(&hdsp->midi_tasklet);
+                hdsp->control_register &= ~(HDSP_Start|HDSP_AudioInterruptEnable|HDSP_Midi0InterruptEnable|HDSP_Midi1InterruptEnable);
+                hdsp_write (hdsp, HDSP_controlRegister, hdsp->control_register);
+        }
+
+        if (hdsp->irq >= 0)
+                free_irq(hdsp->irq, (void *)hdsp);
+
+        snd_hdsp_free_buffers(hdsp);
+        
+        if (hdsp->iobase)
+                iounmap(hdsp->iobase);
+
+        if (hdsp->port)
+                pci_release_regions(hdsp->pci);
+                
+        pci_disable_device(hdsp->pci);
+        return 0;
+}
+
+static void snd_hdsp_card_free(snd_card_t *card)
+{
+        hdsp_t *hdsp = (hdsp_t *) card->private_data;
+
+        if (hdsp)
+                snd_hdsp_free(hdsp);
+}
+
+static int __devinit snd_hdsp_probe(struct pci_dev *pci,
+                                    const struct pci_device_id *pci_id)
+{
+        static int dev;
+        hdsp_t *hdsp;
+        snd_card_t *card;
+        int err;
+
+        if (dev >= SNDRV_CARDS)
+                return -ENODEV;
+        if (!enable[dev]) {
+                dev++;
+                return -ENOENT;
+        }
+
+        if (!(card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(hdsp_t))))
+                return -ENOMEM;
+
+        hdsp = (hdsp_t *) card->private_data;
+        card->private_free = snd_hdsp_card_free;
+        hdsp->dev = dev;
+        hdsp->pci = pci;
+        snd_card_set_dev(card, &pci->dev);
+
+        if ((err = snd_hdsp_create(card, hdsp)) < 0) {
+                snd_card_free(card);
+                return err;
+        }
+
+        strcpy(card->shortname, "Hammerfall DSP");
+        sprintf(card->longname, "%s at 0x%lx, irq %d", hdsp->card_name, 
+                hdsp->port, hdsp->irq);
+
+        if ((err = snd_card_register(card)) < 0) {
+                snd_card_free(card);
+                return err;
+        }
+        pci_set_drvdata(pci, card);
+        dev++;
+        return 0;
+}
+
+static void __devexit snd_hdsp_remove(struct pci_dev *pci)
+{
+        snd_card_free(pci_get_drvdata(pci));
+        pci_set_drvdata(pci, NULL);
+}
+
+static struct pci_driver driver = {
+        .name =     "RME Hammerfall DSP",
+        .id_table = snd_hdsp_ids,
+        .probe =    snd_hdsp_probe,
+        .remove = __devexit_p(snd_hdsp_remove),
+};
+
+static int __init alsa_card_hdsp_init(void)
+{
+        return pci_module_init(&driver);
+}
+
+static void __exit alsa_card_hdsp_exit(void)
+{
+        pci_unregister_driver(&driver);
+}
+
+module_init(alsa_card_hdsp_init)
+module_exit(alsa_card_hdsp_exit)