ALSA: lx6464es - driver for the digigram lx6464es interface

prototype of a driver for the digigram lx6464es 64 channel ethersound
interface.

Signed-off-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 114 insertions, 0 deletions

diff --git a/sound/pci/lx6464es/lx6464es.h b/sound/pci/lx6464es/lx6464es.h
new file mode 100644
index 000000000000..012c010c8c89
--- /dev/null
+++ b/sound/pci/lx6464es/lx6464es.h
@@ -0,0 +1,114 @@
+/* -*- linux-c -*- *
+ *
+ * ALSA driver for the digigram lx6464es interface
+ *
+ * Copyright (c) 2009 Tim Blechmann <tim@klingt.org>
+ *
+ *
+ * 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; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ */
+
+#ifndef LX6464ES_H
+#define LX6464ES_H
+
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+
+#include "lx_core.h"
+
+#define LXP "LX6464ES: "
+
+enum {
+    ES_cmd_free         = 0,    /* no command executing */
+    ES_cmd_processing   = 1,    /* execution of a read/write command */
+    ES_read_pending     = 2,    /* a asynchron read command is pending */
+    ES_read_finishing   = 3,    /* a read command has finished waiting (set by
+                                 * Interrupt or CancelIrp) */
+};
+
+enum lx_stream_status {
+        LX_STREAM_STATUS_FREE,
+/*      LX_STREAM_STATUS_OPEN, */
+        LX_STREAM_STATUS_SCHEDULE_RUN,
+/*      LX_STREAM_STATUS_STARTED, */
+        LX_STREAM_STATUS_RUNNING,
+        LX_STREAM_STATUS_SCHEDULE_STOP,
+/*      LX_STREAM_STATUS_STOPPED, */
+/*      LX_STREAM_STATUS_PAUSED */
+};
+
+
+struct lx_stream {
+        struct snd_pcm_substream  *stream;
+        snd_pcm_uframes_t          frame_pos;
+        enum lx_stream_status      status; /* free, open, running, draining
+                                            * pause */
+        int                        is_capture:1;
+};
+
+
+struct lx6464es {
+        struct snd_card        *card;
+        struct pci_dev         *pci;
+        int                     irq;
+
+        spinlock_t              lock;        /* interrupt spinlock */
+        struct mutex            setup_mutex; /* mutex used in hw_params, open
+                                              * and close */
+
+        struct tasklet_struct   trigger_tasklet; /* trigger tasklet */
+        struct tasklet_struct   tasklet_capture;
+        struct tasklet_struct   tasklet_playback;
+
+        /* ports */
+        unsigned long           port_plx;          /* io port (size=256) */
+        void __iomem           *port_plx_remapped; /* remapped plx port */
+        void __iomem           *port_dsp_bar;      /* memory port (32-bit,
+                                                    * non-prefetchable,
+                                                    * size=8K) */
+
+        /* messaging */
+        spinlock_t              msg_lock;          /* message spinlock */
+        atomic_t                send_message_locked;
+        struct lx_rmh           rmh;
+
+        /* configuration */
+        uint                    freq_ratio : 2;
+        uint                    playback_mute : 1;
+        uint                    hardware_running[2];
+        u32                     board_sample_rate; /* sample rate read from
+                                                    * board */
+        u32                     sample_rate;       /* our sample rate */
+        u16                     pcm_granularity;   /* board blocksize */
+
+        /* dma */
+        struct snd_dma_buffer   capture_dma_buf;
+        struct snd_dma_buffer   playback_dma_buf;
+
+        /* pcm */
+        struct snd_pcm         *pcm;
+
+        /* streams */
+        struct lx_stream        capture_stream;
+        struct lx_stream        playback_stream;
+};
+
+
+#endif /* LX6464ES_H */