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-rw-r--r--sound/soc/intel/atom/sst-mfld-platform-pcm.c826
1 files changed, 826 insertions, 0 deletions
diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
new file mode 100644
index 000000000..c75616a5f
--- /dev/null
+++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
@@ -0,0 +1,826 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * sst_mfld_platform.c - Intel MID Platform driver
+ *
+ * Copyright (C) 2010-2014 Intel Corp
+ * Author: Vinod Koul <vinod.koul@intel.com>
+ * Author: Harsha Priya <priya.harsha@intel.com>
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/compress_driver.h>
+#include <asm/platform_sst_audio.h>
+#include "sst-mfld-platform.h"
+#include "sst-atom-controls.h"
+
+struct sst_device *sst;
+static DEFINE_MUTEX(sst_lock);
+
+int sst_register_dsp(struct sst_device *dev)
+{
+ if (WARN_ON(!dev))
+ return -EINVAL;
+ if (!try_module_get(dev->dev->driver->owner))
+ return -ENODEV;
+ mutex_lock(&sst_lock);
+ if (sst) {
+ dev_err(dev->dev, "we already have a device %s\n", sst->name);
+ module_put(dev->dev->driver->owner);
+ mutex_unlock(&sst_lock);
+ return -EEXIST;
+ }
+ dev_dbg(dev->dev, "registering device %s\n", dev->name);
+ sst = dev;
+ mutex_unlock(&sst_lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sst_register_dsp);
+
+int sst_unregister_dsp(struct sst_device *dev)
+{
+ if (WARN_ON(!dev))
+ return -EINVAL;
+ if (dev != sst)
+ return -EINVAL;
+
+ mutex_lock(&sst_lock);
+
+ if (!sst) {
+ mutex_unlock(&sst_lock);
+ return -EIO;
+ }
+
+ module_put(sst->dev->driver->owner);
+ dev_dbg(dev->dev, "unreg %s\n", sst->name);
+ sst = NULL;
+ mutex_unlock(&sst_lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sst_unregister_dsp);
+
+static const struct snd_pcm_hardware sst_platform_pcm_hw = {
+ .info = (SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_DOUBLE |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_MMAP|
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_BLOCK_TRANSFER |
+ SNDRV_PCM_INFO_SYNC_START),
+ .buffer_bytes_max = SST_MAX_BUFFER,
+ .period_bytes_min = SST_MIN_PERIOD_BYTES,
+ .period_bytes_max = SST_MAX_PERIOD_BYTES,
+ .periods_min = SST_MIN_PERIODS,
+ .periods_max = SST_MAX_PERIODS,
+ .fifo_size = SST_FIFO_SIZE,
+};
+
+static struct sst_dev_stream_map dpcm_strm_map[] = {
+ {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}, /* Reserved, not in use */
+ {MERR_DPCM_AUDIO, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA1_IN, SST_TASK_ID_MEDIA, 0},
+ {MERR_DPCM_COMPR, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA0_IN, SST_TASK_ID_MEDIA, 0},
+ {MERR_DPCM_AUDIO, 0, SNDRV_PCM_STREAM_CAPTURE, PIPE_PCM1_OUT, SST_TASK_ID_MEDIA, 0},
+ {MERR_DPCM_DEEP_BUFFER, 0, SNDRV_PCM_STREAM_PLAYBACK, PIPE_MEDIA3_IN, SST_TASK_ID_MEDIA, 0},
+};
+
+static int sst_media_digital_mute(struct snd_soc_dai *dai, int mute, int stream)
+{
+
+ return sst_send_pipe_gains(dai, stream, mute);
+}
+
+/* helper functions */
+void sst_set_stream_status(struct sst_runtime_stream *stream,
+ int state)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&stream->status_lock, flags);
+ stream->stream_status = state;
+ spin_unlock_irqrestore(&stream->status_lock, flags);
+}
+
+static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
+{
+ int state;
+ unsigned long flags;
+
+ spin_lock_irqsave(&stream->status_lock, flags);
+ state = stream->stream_status;
+ spin_unlock_irqrestore(&stream->status_lock, flags);
+ return state;
+}
+
+static void sst_fill_alloc_params(struct snd_pcm_substream *substream,
+ struct snd_sst_alloc_params_ext *alloc_param)
+{
+ unsigned int channels;
+ snd_pcm_uframes_t period_size;
+ ssize_t periodbytes;
+ ssize_t buffer_bytes = snd_pcm_lib_buffer_bytes(substream);
+ u32 buffer_addr = substream->runtime->dma_addr;
+
+ channels = substream->runtime->channels;
+ period_size = substream->runtime->period_size;
+ periodbytes = samples_to_bytes(substream->runtime, period_size);
+ alloc_param->ring_buf_info[0].addr = buffer_addr;
+ alloc_param->ring_buf_info[0].size = buffer_bytes;
+ alloc_param->sg_count = 1;
+ alloc_param->reserved = 0;
+ alloc_param->frag_size = periodbytes * channels;
+
+}
+static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
+ struct snd_sst_stream_params *param)
+{
+ param->uc.pcm_params.num_chan = (u8) substream->runtime->channels;
+ param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
+ param->uc.pcm_params.sfreq = substream->runtime->rate;
+
+ /* PCM stream via ALSA interface */
+ param->uc.pcm_params.use_offload_path = 0;
+ param->uc.pcm_params.reserved2 = 0;
+ memset(param->uc.pcm_params.channel_map, 0, sizeof(u8));
+
+}
+
+static int sst_get_stream_mapping(int dev, int sdev, int dir,
+ struct sst_dev_stream_map *map, int size)
+{
+ int i;
+
+ if (map == NULL)
+ return -EINVAL;
+
+
+ /* index 0 is not used in stream map */
+ for (i = 1; i < size; i++) {
+ if ((map[i].dev_num == dev) && (map[i].direction == dir))
+ return i;
+ }
+ return 0;
+}
+
+int sst_fill_stream_params(void *substream,
+ const struct sst_data *ctx, struct snd_sst_params *str_params, bool is_compress)
+{
+ int map_size;
+ int index;
+ struct sst_dev_stream_map *map;
+ struct snd_pcm_substream *pstream = NULL;
+ struct snd_compr_stream *cstream = NULL;
+
+ map = ctx->pdata->pdev_strm_map;
+ map_size = ctx->pdata->strm_map_size;
+
+ if (is_compress)
+ cstream = (struct snd_compr_stream *)substream;
+ else
+ pstream = (struct snd_pcm_substream *)substream;
+
+ str_params->stream_type = SST_STREAM_TYPE_MUSIC;
+
+ /* For pcm streams */
+ if (pstream) {
+ index = sst_get_stream_mapping(pstream->pcm->device,
+ pstream->number, pstream->stream,
+ map, map_size);
+ if (index <= 0)
+ return -EINVAL;
+
+ str_params->stream_id = index;
+ str_params->device_type = map[index].device_id;
+ str_params->task = map[index].task_id;
+
+ str_params->ops = (u8)pstream->stream;
+ }
+
+ if (cstream) {
+ index = sst_get_stream_mapping(cstream->device->device,
+ 0, cstream->direction,
+ map, map_size);
+ if (index <= 0)
+ return -EINVAL;
+ str_params->stream_id = index;
+ str_params->device_type = map[index].device_id;
+ str_params->task = map[index].task_id;
+
+ str_params->ops = (u8)cstream->direction;
+ }
+ return 0;
+}
+
+static int sst_platform_alloc_stream(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct sst_runtime_stream *stream =
+ substream->runtime->private_data;
+ struct snd_sst_stream_params param = {{{0,},},};
+ struct snd_sst_params str_params = {0};
+ struct snd_sst_alloc_params_ext alloc_params = {0};
+ int ret_val = 0;
+ struct sst_data *ctx = snd_soc_dai_get_drvdata(dai);
+
+ /* set codec params and inform SST driver the same */
+ sst_fill_pcm_params(substream, &param);
+ sst_fill_alloc_params(substream, &alloc_params);
+ str_params.sparams = param;
+ str_params.aparams = alloc_params;
+ str_params.codec = SST_CODEC_TYPE_PCM;
+
+ /* fill the device type and stream id to pass to SST driver */
+ ret_val = sst_fill_stream_params(substream, ctx, &str_params, false);
+ if (ret_val < 0)
+ return ret_val;
+
+ stream->stream_info.str_id = str_params.stream_id;
+
+ ret_val = stream->ops->open(sst->dev, &str_params);
+ if (ret_val <= 0)
+ return ret_val;
+
+
+ return ret_val;
+}
+
+static void sst_period_elapsed(void *arg)
+{
+ struct snd_pcm_substream *substream = arg;
+ struct sst_runtime_stream *stream;
+ int status;
+
+ if (!substream || !substream->runtime)
+ return;
+ stream = substream->runtime->private_data;
+ if (!stream)
+ return;
+ status = sst_get_stream_status(stream);
+ if (status != SST_PLATFORM_RUNNING)
+ return;
+ snd_pcm_period_elapsed(substream);
+}
+
+static int sst_platform_init_stream(struct snd_pcm_substream *substream)
+{
+ struct sst_runtime_stream *stream =
+ substream->runtime->private_data;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ int ret_val;
+
+ dev_dbg(rtd->dev, "setting buffer ptr param\n");
+ sst_set_stream_status(stream, SST_PLATFORM_INIT);
+ stream->stream_info.period_elapsed = sst_period_elapsed;
+ stream->stream_info.arg = substream;
+ stream->stream_info.buffer_ptr = 0;
+ stream->stream_info.sfreq = substream->runtime->rate;
+ ret_val = stream->ops->stream_init(sst->dev, &stream->stream_info);
+ if (ret_val)
+ dev_err(rtd->dev, "control_set ret error %d\n", ret_val);
+ return ret_val;
+
+}
+
+static int power_up_sst(struct sst_runtime_stream *stream)
+{
+ return stream->ops->power(sst->dev, true);
+}
+
+static void power_down_sst(struct sst_runtime_stream *stream)
+{
+ stream->ops->power(sst->dev, false);
+}
+
+static int sst_media_open(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ int ret_val = 0;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct sst_runtime_stream *stream;
+
+ stream = kzalloc(sizeof(*stream), GFP_KERNEL);
+ if (!stream)
+ return -ENOMEM;
+ spin_lock_init(&stream->status_lock);
+
+ /* get the sst ops */
+ mutex_lock(&sst_lock);
+ if (!sst ||
+ !try_module_get(sst->dev->driver->owner)) {
+ dev_err(dai->dev, "no device available to run\n");
+ ret_val = -ENODEV;
+ goto out_ops;
+ }
+ stream->ops = sst->ops;
+ mutex_unlock(&sst_lock);
+
+ stream->stream_info.str_id = 0;
+
+ stream->stream_info.arg = substream;
+ /* allocate memory for SST API set */
+ runtime->private_data = stream;
+
+ ret_val = power_up_sst(stream);
+ if (ret_val < 0)
+ goto out_power_up;
+
+ /*
+ * Make sure the period to be multiple of 1ms to align the
+ * design of firmware. Apply same rule to buffer size to make
+ * sure alsa could always find a value for period size
+ * regardless the buffer size given by user space.
+ */
+ snd_pcm_hw_constraint_step(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_PERIOD_SIZE, 48);
+ snd_pcm_hw_constraint_step(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_BUFFER_SIZE, 48);
+
+ /* Make sure, that the period size is always even */
+ snd_pcm_hw_constraint_step(substream->runtime, 0,
+ SNDRV_PCM_HW_PARAM_PERIODS, 2);
+
+ return snd_pcm_hw_constraint_integer(runtime,
+ SNDRV_PCM_HW_PARAM_PERIODS);
+out_ops:
+ mutex_unlock(&sst_lock);
+out_power_up:
+ kfree(stream);
+ return ret_val;
+}
+
+static void sst_media_close(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct sst_runtime_stream *stream;
+ int str_id;
+
+ stream = substream->runtime->private_data;
+ power_down_sst(stream);
+
+ str_id = stream->stream_info.str_id;
+ if (str_id)
+ stream->ops->close(sst->dev, str_id);
+ module_put(sst->dev->driver->owner);
+ kfree(stream);
+}
+
+static int sst_media_prepare(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct sst_runtime_stream *stream;
+ int ret_val, str_id;
+
+ stream = substream->runtime->private_data;
+ str_id = stream->stream_info.str_id;
+ if (stream->stream_info.str_id) {
+ ret_val = stream->ops->stream_drop(sst->dev, str_id);
+ return ret_val;
+ }
+
+ ret_val = sst_platform_alloc_stream(substream, dai);
+ if (ret_val <= 0)
+ return ret_val;
+ snprintf(substream->pcm->id, sizeof(substream->pcm->id),
+ "%d", stream->stream_info.str_id);
+
+ ret_val = sst_platform_init_stream(substream);
+ if (ret_val)
+ return ret_val;
+ substream->runtime->hw.info = SNDRV_PCM_INFO_BLOCK_TRANSFER;
+ return 0;
+}
+
+static int sst_enable_ssp(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ int ret = 0;
+
+ if (!snd_soc_dai_active(dai)) {
+ ret = sst_handle_vb_timer(dai, true);
+ sst_fill_ssp_defaults(dai);
+ }
+ return ret;
+}
+
+static int sst_be_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ int ret = 0;
+
+ if (snd_soc_dai_active(dai) == 1)
+ ret = send_ssp_cmd(dai, dai->name, 1);
+ return ret;
+}
+
+static int sst_set_format(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ int ret = 0;
+
+ if (!snd_soc_dai_active(dai))
+ return 0;
+
+ ret = sst_fill_ssp_config(dai, fmt);
+ if (ret < 0)
+ dev_err(dai->dev, "sst_set_format failed..\n");
+
+ return ret;
+}
+
+static int sst_platform_set_ssp_slot(struct snd_soc_dai *dai,
+ unsigned int tx_mask, unsigned int rx_mask,
+ int slots, int slot_width) {
+ int ret = 0;
+
+ if (!snd_soc_dai_active(dai))
+ return ret;
+
+ ret = sst_fill_ssp_slot(dai, tx_mask, rx_mask, slots, slot_width);
+ if (ret < 0)
+ dev_err(dai->dev, "sst_fill_ssp_slot failed..%d\n", ret);
+
+ return ret;
+}
+
+static void sst_disable_ssp(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ if (!snd_soc_dai_active(dai)) {
+ send_ssp_cmd(dai, dai->name, 0);
+ sst_handle_vb_timer(dai, false);
+ }
+}
+
+static const struct snd_soc_dai_ops sst_media_dai_ops = {
+ .startup = sst_media_open,
+ .shutdown = sst_media_close,
+ .prepare = sst_media_prepare,
+ .mute_stream = sst_media_digital_mute,
+};
+
+static const struct snd_soc_dai_ops sst_compr_dai_ops = {
+ .mute_stream = sst_media_digital_mute,
+};
+
+static const struct snd_soc_dai_ops sst_be_dai_ops = {
+ .startup = sst_enable_ssp,
+ .hw_params = sst_be_hw_params,
+ .set_fmt = sst_set_format,
+ .set_tdm_slot = sst_platform_set_ssp_slot,
+ .shutdown = sst_disable_ssp,
+};
+
+static struct snd_soc_dai_driver sst_platform_dai[] = {
+{
+ .name = "media-cpu-dai",
+ .ops = &sst_media_dai_ops,
+ .playback = {
+ .stream_name = "Headset Playback",
+ .channels_min = SST_STEREO,
+ .channels_max = SST_STEREO,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "Headset Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+},
+{
+ .name = "deepbuffer-cpu-dai",
+ .ops = &sst_media_dai_ops,
+ .playback = {
+ .stream_name = "Deepbuffer Playback",
+ .channels_min = SST_STEREO,
+ .channels_max = SST_STEREO,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+},
+{
+ .name = "compress-cpu-dai",
+ .compress_new = snd_soc_new_compress,
+ .ops = &sst_compr_dai_ops,
+ .playback = {
+ .stream_name = "Compress Playback",
+ .channels_min = 1,
+ },
+},
+/* BE CPU Dais */
+{
+ .name = "ssp0-port",
+ .ops = &sst_be_dai_ops,
+ .playback = {
+ .stream_name = "ssp0 Tx",
+ .channels_min = SST_STEREO,
+ .channels_max = SST_STEREO,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "ssp0 Rx",
+ .channels_min = SST_STEREO,
+ .channels_max = SST_STEREO,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+},
+{
+ .name = "ssp1-port",
+ .ops = &sst_be_dai_ops,
+ .playback = {
+ .stream_name = "ssp1 Tx",
+ .channels_min = SST_STEREO,
+ .channels_max = SST_STEREO,
+ .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "ssp1 Rx",
+ .channels_min = SST_STEREO,
+ .channels_max = SST_STEREO,
+ .rates = SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+},
+{
+ .name = "ssp2-port",
+ .ops = &sst_be_dai_ops,
+ .playback = {
+ .stream_name = "ssp2 Tx",
+ .channels_min = SST_STEREO,
+ .channels_max = SST_STEREO,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+ .capture = {
+ .stream_name = "ssp2 Rx",
+ .channels_min = SST_STEREO,
+ .channels_max = SST_STEREO,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+},
+};
+
+static int sst_soc_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime;
+
+ if (substream->pcm->internal)
+ return 0;
+
+ runtime = substream->runtime;
+ runtime->hw = sst_platform_pcm_hw;
+ return 0;
+}
+
+static int sst_soc_trigger(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int cmd)
+{
+ int ret_val = 0, str_id;
+ struct sst_runtime_stream *stream;
+ int status;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+
+ dev_dbg(rtd->dev, "%s called\n", __func__);
+ if (substream->pcm->internal)
+ return 0;
+ stream = substream->runtime->private_data;
+ str_id = stream->stream_info.str_id;
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ dev_dbg(rtd->dev, "sst: Trigger Start\n");
+ status = SST_PLATFORM_RUNNING;
+ stream->stream_info.arg = substream;
+ ret_val = stream->ops->stream_start(sst->dev, str_id);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ dev_dbg(rtd->dev, "sst: in stop\n");
+ status = SST_PLATFORM_DROPPED;
+ ret_val = stream->ops->stream_drop(sst->dev, str_id);
+ break;
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ dev_dbg(rtd->dev, "sst: in pause\n");
+ status = SST_PLATFORM_PAUSED;
+ ret_val = stream->ops->stream_pause(sst->dev, str_id);
+ break;
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ dev_dbg(rtd->dev, "sst: in pause release\n");
+ status = SST_PLATFORM_RUNNING;
+ ret_val = stream->ops->stream_pause_release(sst->dev, str_id);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (!ret_val)
+ sst_set_stream_status(stream, status);
+
+ return ret_val;
+}
+
+
+static snd_pcm_uframes_t sst_soc_pointer(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct sst_runtime_stream *stream;
+ int ret_val, status;
+ struct pcm_stream_info *str_info;
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+
+ stream = substream->runtime->private_data;
+ status = sst_get_stream_status(stream);
+ if (status == SST_PLATFORM_INIT)
+ return 0;
+ str_info = &stream->stream_info;
+ ret_val = stream->ops->stream_read_tstamp(sst->dev, str_info);
+ if (ret_val) {
+ dev_err(rtd->dev, "sst: error code = %d\n", ret_val);
+ return ret_val;
+ }
+ return str_info->buffer_ptr;
+}
+
+static snd_pcm_sframes_t sst_soc_delay(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ struct sst_runtime_stream *stream = substream->runtime->private_data;
+ struct pcm_stream_info *str_info = &stream->stream_info;
+
+ if (sst_get_stream_status(stream) == SST_PLATFORM_INIT)
+ return 0;
+
+ return str_info->pcm_delay;
+}
+
+static int sst_soc_pcm_new(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0);
+ struct snd_pcm *pcm = rtd->pcm;
+
+ if (dai->driver->playback.channels_min ||
+ dai->driver->capture.channels_min) {
+ snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
+ pcm->card->dev,
+ SST_MIN_BUFFER, SST_MAX_BUFFER);
+ }
+ return 0;
+}
+
+static int sst_soc_probe(struct snd_soc_component *component)
+{
+ struct sst_data *drv = dev_get_drvdata(component->dev);
+
+ drv->soc_card = component->card;
+ return sst_dsp_init_v2_dpcm(component);
+}
+
+static void sst_soc_remove(struct snd_soc_component *component)
+{
+ struct sst_data *drv = dev_get_drvdata(component->dev);
+
+ drv->soc_card = NULL;
+}
+
+static const struct snd_soc_component_driver sst_soc_platform_drv = {
+ .name = DRV_NAME,
+ .probe = sst_soc_probe,
+ .remove = sst_soc_remove,
+ .open = sst_soc_open,
+ .trigger = sst_soc_trigger,
+ .pointer = sst_soc_pointer,
+ .delay = sst_soc_delay,
+ .compress_ops = &sst_platform_compress_ops,
+ .pcm_construct = sst_soc_pcm_new,
+};
+
+static int sst_platform_probe(struct platform_device *pdev)
+{
+ struct sst_data *drv;
+ int ret;
+ struct sst_platform_data *pdata;
+
+ drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
+ if (drv == NULL) {
+ return -ENOMEM;
+ }
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (pdata == NULL) {
+ return -ENOMEM;
+ }
+
+ pdata->pdev_strm_map = dpcm_strm_map;
+ pdata->strm_map_size = ARRAY_SIZE(dpcm_strm_map);
+ drv->pdata = pdata;
+ drv->pdev = pdev;
+ mutex_init(&drv->lock);
+ dev_set_drvdata(&pdev->dev, drv);
+
+ ret = devm_snd_soc_register_component(&pdev->dev, &sst_soc_platform_drv,
+ sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
+ if (ret)
+ dev_err(&pdev->dev, "registering cpu dais failed\n");
+
+ return ret;
+}
+
+static int sst_platform_remove(struct platform_device *pdev)
+{
+ dev_dbg(&pdev->dev, "sst_platform_remove success\n");
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+
+static int sst_soc_prepare(struct device *dev)
+{
+ struct sst_data *drv = dev_get_drvdata(dev);
+ struct snd_soc_pcm_runtime *rtd;
+
+ if (!drv->soc_card)
+ return 0;
+
+ /* suspend all pcms first */
+ snd_soc_suspend(drv->soc_card->dev);
+ snd_soc_poweroff(drv->soc_card->dev);
+
+ /* set the SSPs to idle */
+ for_each_card_rtds(drv->soc_card, rtd) {
+ struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0);
+
+ if (snd_soc_dai_active(dai)) {
+ send_ssp_cmd(dai, dai->name, 0);
+ sst_handle_vb_timer(dai, false);
+ }
+ }
+
+ return 0;
+}
+
+static void sst_soc_complete(struct device *dev)
+{
+ struct sst_data *drv = dev_get_drvdata(dev);
+ struct snd_soc_pcm_runtime *rtd;
+
+ if (!drv->soc_card)
+ return;
+
+ /* restart SSPs */
+ for_each_card_rtds(drv->soc_card, rtd) {
+ struct snd_soc_dai *dai = asoc_rtd_to_cpu(rtd, 0);
+
+ if (snd_soc_dai_active(dai)) {
+ sst_handle_vb_timer(dai, true);
+ send_ssp_cmd(dai, dai->name, 1);
+ }
+ }
+ snd_soc_resume(drv->soc_card->dev);
+}
+
+#else
+
+#define sst_soc_prepare NULL
+#define sst_soc_complete NULL
+
+#endif
+
+
+static const struct dev_pm_ops sst_platform_pm = {
+ .prepare = sst_soc_prepare,
+ .complete = sst_soc_complete,
+};
+
+static struct platform_driver sst_platform_driver = {
+ .driver = {
+ .name = "sst-mfld-platform",
+ .pm = &sst_platform_pm,
+ },
+ .probe = sst_platform_probe,
+ .remove = sst_platform_remove,
+};
+
+module_platform_driver(sst_platform_driver);
+
+MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
+MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");
+MODULE_AUTHOR("Harsha Priya <priya.harsha@intel.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:sst-atom-hifi2-platform");
+MODULE_ALIAS("platform:sst-mfld-platform");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 20:57:31 +0000