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- /*
- * 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>
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- */
- #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 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 == true)
- 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 ret_val = 0, str_id;
- stream = substream->runtime->private_data;
- power_down_sst(stream);
- str_id = stream->stream_info.str_id;
- if (str_id)
- ret_val = 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)
- {
- snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
- 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 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 struct snd_soc_dai_ops sst_compr_dai_ops = {
- .mute_stream = sst_media_digital_mute,
- };
- static 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;
- int retval = 0;
- if (dai->driver->playback.channels_min ||
- dai->driver->capture.channels_min) {
- retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
- SNDRV_DMA_TYPE_CONTINUOUS,
- snd_dma_continuous_data(GFP_DMA),
- SST_MIN_BUFFER, SST_MAX_BUFFER);
- if (retval) {
- dev_err(rtd->dev, "dma buffer allocationf fail\n");
- return retval;
- }
- }
- return retval;
- }
- static int sst_soc_probe(struct snd_soc_platform *platform)
- {
- struct sst_data *drv = dev_get_drvdata(platform->dev);
- drv->soc_card = platform->component.card;
- return sst_dsp_init_v2_dpcm(platform);
- }
- static struct snd_soc_platform_driver sst_soc_platform_drv = {
- .probe = sst_soc_probe,
- .ops = &sst_platform_ops,
- .compr_ops = &sst_platform_compr_ops,
- .pcm_new = sst_pcm_new,
- };
- static const struct snd_soc_component_driver sst_component = {
- .name = "sst",
- };
- 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 = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
- if (ret) {
- dev_err(&pdev->dev, "registering soc platform failed\n");
- return ret;
- }
- ret = snd_soc_register_component(&pdev->dev, &sst_component,
- sst_platform_dai, ARRAY_SIZE(sst_platform_dai));
- if (ret) {
- dev_err(&pdev->dev, "registering cpu dais failed\n");
- snd_soc_unregister_platform(&pdev->dev);
- }
- return ret;
- }
- static int sst_platform_remove(struct platform_device *pdev)
- {
- snd_soc_unregister_component(&pdev->dev);
- snd_soc_unregister_platform(&pdev->dev);
- 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 */
- list_for_each_entry(rtd, &drv->soc_card->rtd_list, list) {
- 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 */
- list_for_each_entry(rtd, &drv->soc_card->rtd_list, list) {
- 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-mfld-platform");
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