ALSA: dice: disable double_pcm_frames mode for M-Audio Profire 610, 2626 and Avid...

ALSA dice driver detects jumbo payload at high sampling transfer frequency
for below models:

 * Avid M-Box 3 Pro
 * M-Audio Profire 610
 * M-Audio Profire 2626

Although many DICE-based devices have a quirk at high sampling transfer
frequency to multiplex double number of PCM frames into data block than
the number in IEC 61883-1/6, the above devices are just compliant to
IEC 61883-1/6.

This commit disables the mode of double_pcm_frames for the models.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210518012510.37126-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/firewire/dice/dice-pcm.c b/sound/firewire/dice/dice-pcm.c
index af8a90e..a69ca11 100644 (file)
--- a/sound/firewire/dice/dice-pcm.c
+++ b/sound/firewire/dice/dice-pcm.c
@@ -218,7 +218,7 @@ static int pcm_open(struct snd_pcm_substream *substream)
 
                if (frames_per_period > 0) {
                        // For double_pcm_frame quirk.
-                       if (rate > 96000) {
+                       if (rate > 96000 && !dice->disable_double_pcm_frames) {
                                frames_per_period *= 2;
                                frames_per_buffer *= 2;
                        }
@@ -273,7 +273,7 @@ static int pcm_hw_params(struct snd_pcm_substream *substream,
 
                mutex_lock(&dice->mutex);
                // For double_pcm_frame quirk.
-               if (rate > 96000) {
+               if (rate > 96000 && !dice->disable_double_pcm_frames) {
                        events_per_period /= 2;
                        events_per_buffer /= 2;
                }

diff --git a/sound/firewire/dice/dice-stream.c b/sound/firewire/dice/dice-stream.c
index 1a14c08..c4dfe76 100644 (file)
--- a/sound/firewire/dice/dice-stream.c
+++ b/sound/firewire/dice/dice-stream.c
@@ -181,7 +181,7 @@ static int keep_resources(struct snd_dice *dice, struct amdtp_stream *stream,
        // as 'Dual Wire'.
        // For this quirk, blocking mode is required and PCM buffer size should
        // be aligned to SYT_INTERVAL.
-       double_pcm_frames = rate > 96000;
+       double_pcm_frames = (rate > 96000 && !dice->disable_double_pcm_frames);
        if (double_pcm_frames) {
                rate /= 2;
                pcm_chs *= 2;

diff --git a/sound/firewire/dice/dice.c b/sound/firewire/dice/dice.c
index 107a816..239d164 100644 (file)
--- a/sound/firewire/dice/dice.c
+++ b/sound/firewire/dice/dice.c
@@ -21,6 +21,7 @@ MODULE_LICENSE("GPL v2");
 #define OUI_SSL                        0x0050c2        // Actually ID reserved by IEEE.
 #define OUI_PRESONUS           0x000a92
 #define OUI_HARMAN             0x000fd7
+#define OUI_AVID               0x00a07e
 
 #define DICE_CATEGORY_ID       0x04
 #define WEISS_CATEGORY_ID      0x00
@@ -222,6 +223,14 @@ static int dice_probe(struct fw_unit *unit,
                                (snd_dice_detect_formats_t)entry->driver_data;
        }
 
+       // Below models are compliant to IEC 61883-1/6 and have no quirk at high sampling transfer
+       // frequency.
+       // * Avid M-Box 3 Pro
+       // * M-Audio Profire 610
+       // * M-Audio Profire 2626
+       if (entry->vendor_id == OUI_MAUDIO || entry->vendor_id == OUI_AVID)
+               dice->disable_double_pcm_frames = true;
+
        spin_lock_init(&dice->lock);
        mutex_init(&dice->mutex);
        init_completion(&dice->clock_accepted);
@@ -278,7 +287,22 @@ static void dice_bus_reset(struct fw_unit *unit)
 
 #define DICE_INTERFACE 0x000001
 
+#define DICE_DEV_ENTRY_TYPICAL(vendor, model, data) \
+       { \
+               .match_flags    = IEEE1394_MATCH_VENDOR_ID | \
+                                 IEEE1394_MATCH_MODEL_ID | \
+                                 IEEE1394_MATCH_SPECIFIER_ID | \
+                                 IEEE1394_MATCH_VERSION, \
+               .vendor_id      = (vendor), \
+               .model_id       = (model), \
+               .specifier_id   = (vendor), \
+               .version        = DICE_INTERFACE, \
+               .driver_data = (kernel_ulong_t)(data), \
+       }
+
 static const struct ieee1394_device_id dice_id_table[] = {
+       // Avid M-Box 3 Pro. To match in probe function.
+       DICE_DEV_ENTRY_TYPICAL(OUI_AVID, 0x000004, snd_dice_detect_extension_formats),
        /* M-Audio Profire 2626 has a different value in version field. */
        {
                .match_flags    = IEEE1394_MATCH_VENDOR_ID |

diff --git a/sound/firewire/dice/dice.h b/sound/firewire/dice/dice.h
index adc6f7c..3c967d1 100644 (file)
--- a/sound/firewire/dice/dice.h
+++ b/sound/firewire/dice/dice.h
@@ -109,7 +109,8 @@ struct snd_dice {
        struct fw_iso_resources rx_resources[MAX_STREAMS];
        struct amdtp_stream tx_stream[MAX_STREAMS];
        struct amdtp_stream rx_stream[MAX_STREAMS];
-       bool global_enabled;
+       bool global_enabled:1;
+       bool disable_double_pcm_frames:1;
        struct completion clock_accepted;
        unsigned int substreams_counter;