diff options
Diffstat (limited to 'sound/soc/intel/atom/sst-mfld-platform-pcm.c')
-rw-r--r-- | sound/soc/intel/atom/sst-mfld-platform-pcm.c | 804 |
1 files changed, 804 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 0000000..2fbaf2c --- /dev/null +++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c @@ -0,0 +1,804 @@ +/* + * 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); +extern struct snd_compr_ops sst_platform_compr_ops; + +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}, +}; + +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 inline unsigned int get_current_pipe_id(struct snd_soc_dai *dai, + struct snd_pcm_substream *substream) +{ + struct sst_data *sst = snd_soc_dai_get_drvdata(dai); + struct sst_dev_stream_map *map = sst->pdata->pdev_strm_map; + struct sst_runtime_stream *stream = + substream->runtime->private_data; + u32 str_id = stream->stream_info.str_id; + unsigned int pipe_id; + + pipe_id = map[str_id].device_id; + + dev_dbg(dai->dev, "got pipe_id = %#x for str_id = %d\n", + pipe_id, str_id); + return pipe_id; +} + +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); + if (ret) + return ret; + ret = send_ssp_cmd(dai, dai->name, 1); + } + 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, + .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, + }, + .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, + }, +}, +{ + .name = "compress-cpu-dai", + .compress_dai = 1, + .ops = &sst_compr_dai_ops, + .playback = { + .stream_name = "Compress Playback", + .channels_min = SST_STEREO, + .channels_max = SST_STEREO, + .rates = SNDRV_PCM_RATE_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, +}, +/* 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 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); + int i; + + /* suspend all pcms first */ + snd_soc_suspend(drv->soc_card->dev); + snd_soc_poweroff(drv->soc_card->dev); + + /* set the SSPs to idle */ + for (i = 0; i < drv->soc_card->num_rtd; i++) { + struct snd_soc_dai *dai = drv->soc_card->rtd[i].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); + int i; + + /* restart SSPs */ + for (i = 0; i < drv->soc_card->num_rtd; i++) { + struct snd_soc_dai *dai = drv->soc_card->rtd[i].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"); |