[ALSA] snd-ca0106: Add midi support.

Modules: PCI drivers,CA0106 driver

Author: Tilman Kranz <tilde@tk-sls.de>

Signed-off-by: James Courtier-Dutton <James@superbug.co.uk>

1 files changed, 23 insertions, 4 deletions

diff --git a/sound/pci/ca0106/ca0106.h b/sound/pci/ca0106/ca0106.h
index da09cab405a9..9a4b6406f7a5 100644
--- a/sound/pci/ca0106/ca0106.h
+++ b/sound/pci/ca0106/ca0106.h
@@ -399,10 +399,24 @@
 #define PLAYBACK_VOLUME2        0x6a            /* Playback Analog volume per channel. Does not effect AC3 output */
                                                 /* Similar to register 0x66, except that the destination is the I2S mixer instead of the SPDIF mixer. I.E. Outputs to the Analog outputs instead of SPDIF. */
 #define UNKNOWN6b               0x6b            /* Unknown. Readonly. Default 00400000 00400000 00400000 00400000 */
-#define UART_A_DATA             0x6c            /* Uart, used in setting sample rates, bits per sample etc. */
-#define UART_A_CMD              0x6d            /* Uart, used in setting sample rates, bits per sample etc. */
-#define UART_B_DATA             0x6e            /* Uart, Unknown. */
-#define UART_B_CMD              0x6f            /* Uart, Unknown. */
+#define MIDI_UART_A_DATA                0x6c            /* Midi Uart A Data */
+#define MIDI_UART_A_CMD         0x6d            /* Midi Uart A Command/Status */
+#define MIDI_UART_B_DATA                0x6e            /* Midi Uart B Data (currently unused) */
+#define MIDI_UART_B_CMD         0x6f            /* Midi Uart B Command/Status (currently unused) */
+
+/* unique channel identifier for midi->channel */
+
+#define CA0106_MIDI_CHAN_A              0x1
+#define CA0106_MIDI_CHAN_B              0x2
+
+/* from mpu401 */
+
+#define CA0106_MIDI_INPUT_AVAIL         0x80
+#define CA0106_MIDI_OUTPUT_READY        0x40
+#define CA0106_MPU401_RESET             0xff
+#define CA0106_MPU401_ENTER_UART        0x3f
+#define CA0106_MPU401_ACK               0xfe
+
 #define SAMPLE_RATE_TRACKER_STATUS 0x70         /* Readonly. Default 00108000 00108000 00500000 00500000 */
                                                 /* Estimated sample rate [19:0] Relative to 48kHz. 0x8000 =  1.0
                                                  * Rate Locked [20]
@@ -538,6 +552,8 @@
 #define CONTROL_CENTER_LFE_CHANNEL 1
 #define CONTROL_UNKNOWN_CHANNEL 2
 
+#include "ca_midi.h"
+
 typedef struct snd_ca0106_channel ca0106_channel_t;
 typedef struct snd_ca0106 ca0106_t;
 typedef struct snd_ca0106_pcm ca0106_pcm_t;
@@ -592,6 +608,9 @@ struct snd_ca0106 {
         int capture_mic_line_in;
 
         struct snd_dma_buffer buffer;
+
+        ca_midi_t midi;
+        ca_midi_t midi2;
 };
 
 int __devinit snd_ca0106_mixer(ca0106_t *emu);