| // 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 = virt_to_phys(substream->dma_buffer.area); |
| |
| 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, ¶m); |
| sst_fill_alloc_params(substream, &alloc_params); |
| substream->runtime->dma_area = substream->dma_buffer.area; |
| 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 = substream->private_data; |
| 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) |
| return ret_val; |
| |
| /* 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: |
| kfree(stream); |
| mutex_unlock(&sst_lock); |
| 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 = 0, 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 ret_val; |
| } |
| |
| static int sst_media_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params, |
| struct snd_soc_dai *dai) |
| { |
| int ret; |
| |
| ret = |
| snd_pcm_lib_malloc_pages(substream, |
| params_buffer_bytes(params)); |
| if (ret) |
| return ret; |
| memset(substream->runtime->dma_area, 0, params_buffer_bytes(params)); |
| return 0; |
| } |
| |
| static int sst_media_hw_free(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| return snd_pcm_lib_free_pages(substream); |
| } |
| |
| static int sst_enable_ssp(struct snd_pcm_substream *substream, |
| struct snd_soc_dai *dai) |
| { |
| int ret = 0; |
| |
| if (!dai->active) { |
| 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 (dai->active == 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 (!dai->active) |
| 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 (!dai->active) |
| 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 (!dai->active) { |
| 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, |
| .hw_params = sst_media_hw_params, |
| .hw_free = sst_media_hw_free, |
| .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_44100|SNDRV_PCM_RATE_48000, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE, |
| }, |
| .capture = { |
| .stream_name = "Headset Capture", |
| .channels_min = 1, |
| .channels_max = 2, |
| .rates = SNDRV_PCM_RATE_44100|SNDRV_PCM_RATE_48000, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_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_44100|SNDRV_PCM_RATE_48000, |
| .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_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_platform_open(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_platform_pcm_trigger(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 = substream->private_data; |
| |
| dev_dbg(rtd->dev, "sst_platform_pcm_trigger called\n"); |
| 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_platform_pcm_pointer |
| (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 = substream->private_data; |
| |
| 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; |
| } |
| substream->runtime->delay = str_info->pcm_delay; |
| return str_info->buffer_ptr; |
| } |
| |
| static const struct snd_pcm_ops sst_platform_ops = { |
| .open = sst_platform_open, |
| .ioctl = snd_pcm_lib_ioctl, |
| .trigger = sst_platform_pcm_trigger, |
| .pointer = sst_platform_pcm_pointer, |
| }; |
| |
| static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd) |
| { |
| struct snd_soc_dai *dai = rtd->cpu_dai; |
| struct snd_pcm *pcm = rtd->pcm; |
| |
| if (dai->driver->playback.channels_min || |
| dai->driver->capture.channels_min) { |
| snd_pcm_lib_preallocate_pages_for_all(pcm, |
| SNDRV_DMA_TYPE_CONTINUOUS, |
| snd_dma_continuous_data(GFP_DMA), |
| 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, |
| .ops = &sst_platform_ops, |
| .compr_ops = &sst_platform_compr_ops, |
| .pcm_new = sst_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 = rtd->cpu_dai; |
| |
| if (dai->active) { |
| 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 = rtd->cpu_dai; |
| |
| if (dai->active) { |
| 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"); |