[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/firewire/dice/dice-pcm.c b/src/kernel/linux/v4.14/sound/firewire/dice/dice-pcm.c
new file mode 100644
index 0000000..7cb9e97
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/firewire/dice/dice-pcm.c
@@ -0,0 +1,370 @@
+/*
+ * dice_pcm.c - a part of driver for DICE based devices
+ *
+ * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
+ * Copyright (c) 2014 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "dice.h"
+
+static int limit_channels_and_rates(struct snd_dice *dice,
+ struct snd_pcm_runtime *runtime,
+ enum amdtp_stream_direction dir,
+ unsigned int index, unsigned int size)
+{
+ struct snd_pcm_hardware *hw = &runtime->hw;
+ struct amdtp_stream *stream;
+ unsigned int rate;
+ __be32 reg;
+ int err;
+
+ /*
+ * Retrieve current Multi Bit Linear Audio data channel and limit to
+ * it.
+ */
+ if (dir == AMDTP_IN_STREAM) {
+ stream = &dice->tx_stream[index];
+ err = snd_dice_transaction_read_tx(dice,
+ size * index + TX_NUMBER_AUDIO,
+ ®, sizeof(reg));
+ } else {
+ stream = &dice->rx_stream[index];
+ err = snd_dice_transaction_read_rx(dice,
+ size * index + RX_NUMBER_AUDIO,
+ ®, sizeof(reg));
+ }
+ if (err < 0)
+ return err;
+
+ hw->channels_min = hw->channels_max = be32_to_cpu(reg);
+
+ /* Retrieve current sampling transfer frequency and limit to it. */
+ err = snd_dice_transaction_get_rate(dice, &rate);
+ if (err < 0)
+ return err;
+
+ hw->rates = snd_pcm_rate_to_rate_bit(rate);
+ snd_pcm_limit_hw_rates(runtime);
+
+ return 0;
+}
+
+static int init_hw_info(struct snd_dice *dice,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_pcm_hardware *hw = &runtime->hw;
+ enum amdtp_stream_direction dir;
+ struct amdtp_stream *stream;
+ __be32 reg[2];
+ unsigned int count, size;
+ int err;
+
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ hw->formats = AM824_IN_PCM_FORMAT_BITS;
+ dir = AMDTP_IN_STREAM;
+ stream = &dice->tx_stream[substream->pcm->device];
+ err = snd_dice_transaction_read_tx(dice, TX_NUMBER, reg,
+ sizeof(reg));
+ } else {
+ hw->formats = AM824_OUT_PCM_FORMAT_BITS;
+ dir = AMDTP_OUT_STREAM;
+ stream = &dice->rx_stream[substream->pcm->device];
+ err = snd_dice_transaction_read_rx(dice, RX_NUMBER, reg,
+ sizeof(reg));
+ }
+
+ if (err < 0)
+ return err;
+
+ count = min_t(unsigned int, be32_to_cpu(reg[0]), MAX_STREAMS);
+ if (substream->pcm->device >= count)
+ return -ENXIO;
+
+ size = be32_to_cpu(reg[1]) * 4;
+ err = limit_channels_and_rates(dice, substream->runtime, dir,
+ substream->pcm->device, size);
+ if (err < 0)
+ return err;
+
+ return amdtp_am824_add_pcm_hw_constraints(stream, runtime);
+}
+
+static int pcm_open(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ int err;
+
+ err = snd_dice_stream_lock_try(dice);
+ if (err < 0)
+ goto end;
+
+ err = init_hw_info(dice, substream);
+ if (err < 0)
+ goto err_locked;
+
+ snd_pcm_set_sync(substream);
+end:
+ return err;
+err_locked:
+ snd_dice_stream_lock_release(dice);
+ return err;
+}
+
+static int pcm_close(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+
+ snd_dice_stream_lock_release(dice);
+
+ return 0;
+}
+
+static int capture_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_dice *dice = substream->private_data;
+ int err;
+
+ err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0)
+ return err;
+
+ if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
+ mutex_lock(&dice->mutex);
+ dice->substreams_counter++;
+ mutex_unlock(&dice->mutex);
+ }
+
+ return 0;
+}
+static int playback_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_dice *dice = substream->private_data;
+ int err;
+
+ err = snd_pcm_lib_alloc_vmalloc_buffer(substream,
+ params_buffer_bytes(hw_params));
+ if (err < 0)
+ return err;
+
+ if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) {
+ mutex_lock(&dice->mutex);
+ dice->substreams_counter++;
+ mutex_unlock(&dice->mutex);
+ }
+
+ return 0;
+}
+
+static int capture_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+
+ mutex_lock(&dice->mutex);
+
+ if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
+ dice->substreams_counter--;
+
+ snd_dice_stream_stop_duplex(dice);
+
+ mutex_unlock(&dice->mutex);
+
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
+}
+
+static int playback_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+
+ mutex_lock(&dice->mutex);
+
+ if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN)
+ dice->substreams_counter--;
+
+ snd_dice_stream_stop_duplex(dice);
+
+ mutex_unlock(&dice->mutex);
+
+ return snd_pcm_lib_free_vmalloc_buffer(substream);
+}
+
+static int capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
+ int err;
+
+ mutex_lock(&dice->mutex);
+ err = snd_dice_stream_start_duplex(dice, substream->runtime->rate);
+ mutex_unlock(&dice->mutex);
+ if (err >= 0)
+ amdtp_stream_pcm_prepare(stream);
+
+ return 0;
+}
+static int playback_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
+ int err;
+
+ mutex_lock(&dice->mutex);
+ err = snd_dice_stream_start_duplex(dice, substream->runtime->rate);
+ mutex_unlock(&dice->mutex);
+ if (err >= 0)
+ amdtp_stream_pcm_prepare(stream);
+
+ return err;
+}
+
+static int capture_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ amdtp_stream_pcm_trigger(stream, substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ amdtp_stream_pcm_trigger(stream, NULL);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+static int playback_trigger(struct snd_pcm_substream *substream, int cmd)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ amdtp_stream_pcm_trigger(stream, substream);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ amdtp_stream_pcm_trigger(stream, NULL);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static snd_pcm_uframes_t capture_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
+
+ return amdtp_stream_pcm_pointer(stream);
+}
+static snd_pcm_uframes_t playback_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
+
+ return amdtp_stream_pcm_pointer(stream);
+}
+
+static int capture_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->tx_stream[substream->pcm->device];
+
+ return amdtp_stream_pcm_ack(stream);
+}
+
+static int playback_ack(struct snd_pcm_substream *substream)
+{
+ struct snd_dice *dice = substream->private_data;
+ struct amdtp_stream *stream = &dice->rx_stream[substream->pcm->device];
+
+ return amdtp_stream_pcm_ack(stream);
+}
+
+int snd_dice_create_pcm(struct snd_dice *dice)
+{
+ static const struct snd_pcm_ops capture_ops = {
+ .open = pcm_open,
+ .close = pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = capture_hw_params,
+ .hw_free = capture_hw_free,
+ .prepare = capture_prepare,
+ .trigger = capture_trigger,
+ .pointer = capture_pointer,
+ .ack = capture_ack,
+ .page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
+ };
+ static const struct snd_pcm_ops playback_ops = {
+ .open = pcm_open,
+ .close = pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = playback_hw_params,
+ .hw_free = playback_hw_free,
+ .prepare = playback_prepare,
+ .trigger = playback_trigger,
+ .pointer = playback_pointer,
+ .ack = playback_ack,
+ .page = snd_pcm_lib_get_vmalloc_page,
+ .mmap = snd_pcm_lib_mmap_vmalloc,
+ };
+ __be32 reg;
+ struct snd_pcm *pcm;
+ unsigned int i, max_capture, max_playback, capture, playback;
+ int err;
+
+ /* Check whether PCM substreams are required. */
+ if (dice->force_two_pcms) {
+ max_capture = max_playback = 2;
+ } else {
+ max_capture = max_playback = 0;
+ err = snd_dice_transaction_read_tx(dice, TX_NUMBER, ®,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ max_capture = min_t(unsigned int, be32_to_cpu(reg), MAX_STREAMS);
+
+ err = snd_dice_transaction_read_rx(dice, RX_NUMBER, ®,
+ sizeof(reg));
+ if (err < 0)
+ return err;
+ max_playback = min_t(unsigned int, be32_to_cpu(reg), MAX_STREAMS);
+ }
+
+ for (i = 0; i < MAX_STREAMS; i++) {
+ capture = playback = 0;
+ if (i < max_capture)
+ capture = 1;
+ if (i < max_playback)
+ playback = 1;
+ if (capture == 0 && playback == 0)
+ break;
+
+ err = snd_pcm_new(dice->card, "DICE", i, playback, capture,
+ &pcm);
+ if (err < 0)
+ return err;
+ pcm->private_data = dice;
+ strcpy(pcm->name, dice->card->shortname);
+
+ if (capture > 0)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
+ &capture_ops);
+
+ if (playback > 0)
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
+ &playback_ops);
+ }
+
+ return 0;
+}