diff options
Diffstat (limited to 'sound/soc/intel/baytrail/sst-baytrail-pcm.c')
-rw-r--r-- | sound/soc/intel/baytrail/sst-baytrail-pcm.c | 459 |
1 files changed, 0 insertions, 459 deletions
diff --git a/sound/soc/intel/baytrail/sst-baytrail-pcm.c b/sound/soc/intel/baytrail/sst-baytrail-pcm.c deleted file mode 100644 index 54a66cc6db89..000000000000 --- a/sound/soc/intel/baytrail/sst-baytrail-pcm.c +++ /dev/null @@ -1,459 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Intel Baytrail SST PCM Support - * Copyright (c) 2014, Intel Corporation. - */ - -#include <linux/module.h> -#include <linux/dma-mapping.h> -#include <linux/slab.h> -#include <sound/core.h> -#include <sound/pcm.h> -#include <sound/pcm_params.h> -#include <sound/soc.h> -#include "sst-baytrail-ipc.h" -#include "../common/sst-dsp-priv.h" -#include "../common/sst-dsp.h" - -#define DRV_NAME "byt-dai" -#define BYT_PCM_COUNT 2 - -static const struct snd_pcm_hardware sst_byt_pcm_hardware = { - .info = SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_PAUSE | - SNDRV_PCM_INFO_RESUME, - .formats = SNDRV_PCM_FMTBIT_S16_LE | - SNDRV_PCM_FMTBIT_S24_LE, - .period_bytes_min = 384, - .period_bytes_max = 48000, - .periods_min = 2, - .periods_max = 250, - .buffer_bytes_max = 96000, -}; - -/* private data for each PCM DSP stream */ -struct sst_byt_pcm_data { - struct sst_byt_stream *stream; - struct snd_pcm_substream *substream; - struct mutex mutex; - - /* latest DSP DMA hw pointer */ - u32 hw_ptr; - - struct work_struct work; -}; - -/* private data for the driver */ -struct sst_byt_priv_data { - /* runtime DSP */ - struct sst_byt *byt; - - /* DAI data */ - struct sst_byt_pcm_data pcm[BYT_PCM_COUNT]; - - /* flag indicating is stream context restore needed after suspend */ - bool restore_stream; -}; - -/* this may get called several times by oss emulation */ -static int sst_byt_pcm_hw_params(struct snd_soc_component *component, - struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component); - struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream]; - struct sst_byt *byt = pdata->byt; - u32 rate, bits; - u8 channels; - int ret, playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK); - - dev_dbg(rtd->dev, "PCM: hw_params, pcm_data %p\n", pcm_data); - - ret = sst_byt_stream_type(byt, pcm_data->stream, - 1, 1, !playback); - if (ret < 0) { - dev_err(rtd->dev, "failed to set stream format %d\n", ret); - return ret; - } - - rate = params_rate(params); - ret = sst_byt_stream_set_rate(byt, pcm_data->stream, rate); - if (ret < 0) { - dev_err(rtd->dev, "could not set rate %d\n", rate); - return ret; - } - - bits = snd_pcm_format_width(params_format(params)); - ret = sst_byt_stream_set_bits(byt, pcm_data->stream, bits); - if (ret < 0) { - dev_err(rtd->dev, "could not set formats %d\n", - params_rate(params)); - return ret; - } - - channels = (u8)(params_channels(params) & 0xF); - ret = sst_byt_stream_set_channels(byt, pcm_data->stream, channels); - if (ret < 0) { - dev_err(rtd->dev, "could not set channels %d\n", - params_rate(params)); - return ret; - } - - ret = sst_byt_stream_buffer(byt, pcm_data->stream, - substream->dma_buffer.addr, - params_buffer_bytes(params)); - if (ret < 0) { - dev_err(rtd->dev, "PCM: failed to set DMA buffer %d\n", ret); - return ret; - } - - ret = sst_byt_stream_commit(byt, pcm_data->stream); - if (ret < 0) { - dev_err(rtd->dev, "PCM: failed stream commit %d\n", ret); - return ret; - } - - return 0; -} - -static int sst_byt_pcm_restore_stream_context(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME); - struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component); - struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream]; - struct sst_byt *byt = pdata->byt; - int ret; - - /* commit stream using existing stream params */ - ret = sst_byt_stream_commit(byt, pcm_data->stream); - if (ret < 0) { - dev_err(rtd->dev, "PCM: failed stream commit %d\n", ret); - return ret; - } - - sst_byt_stream_start(byt, pcm_data->stream, pcm_data->hw_ptr); - - dev_dbg(rtd->dev, "stream context restored at offset %d\n", - pcm_data->hw_ptr); - - return 0; -} - -static void sst_byt_pcm_work(struct work_struct *work) -{ - struct sst_byt_pcm_data *pcm_data = - container_of(work, struct sst_byt_pcm_data, work); - - if (snd_pcm_running(pcm_data->substream)) - sst_byt_pcm_restore_stream_context(pcm_data->substream); -} - -static int sst_byt_pcm_trigger(struct snd_soc_component *component, - struct snd_pcm_substream *substream, int cmd) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component); - struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream]; - struct sst_byt *byt = pdata->byt; - - dev_dbg(rtd->dev, "PCM: trigger %d\n", cmd); - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - pcm_data->hw_ptr = 0; - sst_byt_stream_start(byt, pcm_data->stream, 0); - break; - case SNDRV_PCM_TRIGGER_RESUME: - if (pdata->restore_stream) - schedule_work(&pcm_data->work); - else - sst_byt_stream_resume(byt, pcm_data->stream); - break; - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - sst_byt_stream_resume(byt, pcm_data->stream); - break; - case SNDRV_PCM_TRIGGER_STOP: - sst_byt_stream_stop(byt, pcm_data->stream); - break; - case SNDRV_PCM_TRIGGER_SUSPEND: - pdata->restore_stream = false; - /* fallthrough */ - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - sst_byt_stream_pause(byt, pcm_data->stream); - break; - default: - break; - } - - return 0; -} - -static u32 byt_notify_pointer(struct sst_byt_stream *stream, void *data) -{ - struct sst_byt_pcm_data *pcm_data = data; - struct snd_pcm_substream *substream = pcm_data->substream; - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME); - struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component); - struct sst_byt *byt = pdata->byt; - u32 pos, hw_pos; - - hw_pos = sst_byt_get_dsp_position(byt, pcm_data->stream, - snd_pcm_lib_buffer_bytes(substream)); - pcm_data->hw_ptr = hw_pos; - pos = frames_to_bytes(runtime, - (runtime->control->appl_ptr % - runtime->buffer_size)); - - dev_dbg(rtd->dev, "PCM: App/DMA pointer %u/%u bytes\n", pos, hw_pos); - - snd_pcm_period_elapsed(substream); - return pos; -} - -static snd_pcm_uframes_t sst_byt_pcm_pointer(struct snd_soc_component *component, - struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct snd_pcm_runtime *runtime = substream->runtime; - struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component); - struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream]; - - dev_dbg(rtd->dev, "PCM: DMA pointer %u bytes\n", pcm_data->hw_ptr); - - return bytes_to_frames(runtime, pcm_data->hw_ptr); -} - -static int sst_byt_pcm_open(struct snd_soc_component *component, - struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component); - struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream]; - struct sst_byt *byt = pdata->byt; - - dev_dbg(rtd->dev, "PCM: open\n"); - - mutex_lock(&pcm_data->mutex); - - pcm_data->substream = substream; - - snd_soc_set_runtime_hwparams(substream, &sst_byt_pcm_hardware); - - pcm_data->stream = sst_byt_stream_new(byt, substream->stream + 1, - byt_notify_pointer, pcm_data); - if (pcm_data->stream == NULL) { - dev_err(rtd->dev, "failed to create stream\n"); - mutex_unlock(&pcm_data->mutex); - return -EINVAL; - } - - mutex_unlock(&pcm_data->mutex); - return 0; -} - -static int sst_byt_pcm_close(struct snd_soc_component *component, - struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component); - struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream]; - struct sst_byt *byt = pdata->byt; - int ret; - - dev_dbg(rtd->dev, "PCM: close\n"); - - cancel_work_sync(&pcm_data->work); - mutex_lock(&pcm_data->mutex); - ret = sst_byt_stream_free(byt, pcm_data->stream); - if (ret < 0) { - dev_dbg(rtd->dev, "Free stream fail\n"); - goto out; - } - pcm_data->stream = NULL; - -out: - mutex_unlock(&pcm_data->mutex); - return ret; -} - -static int sst_byt_pcm_mmap(struct snd_soc_component *component, - struct snd_pcm_substream *substream, - struct vm_area_struct *vma) -{ - struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); - - dev_dbg(rtd->dev, "PCM: mmap\n"); - return snd_pcm_lib_default_mmap(substream, vma); -} - -static int sst_byt_pcm_new(struct snd_soc_component *component, - struct snd_soc_pcm_runtime *rtd) -{ - struct snd_pcm *pcm = rtd->pcm; - size_t size; - struct sst_pdata *pdata = dev_get_platdata(component->dev); - - if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream || - pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { - size = sst_byt_pcm_hardware.buffer_bytes_max; - snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, - pdata->dma_dev, size, size); - } - - return 0; -} - -static struct snd_soc_dai_driver byt_dais[] = { - { - .name = "Baytrail PCM", - .playback = { - .stream_name = "System Playback", - .channels_min = 2, - .channels_max = 2, - .rates = SNDRV_PCM_RATE_48000, - .formats = SNDRV_PCM_FMTBIT_S24_3LE | - SNDRV_PCM_FMTBIT_S16_LE, - }, - .capture = { - .stream_name = "Analog Capture", - .channels_min = 2, - .channels_max = 2, - .rates = SNDRV_PCM_RATE_48000, - .formats = SNDRV_PCM_FMTBIT_S16_LE, - }, - }, -}; - -static int sst_byt_pcm_probe(struct snd_soc_component *component) -{ - struct sst_pdata *plat_data = dev_get_platdata(component->dev); - struct sst_byt_priv_data *priv_data; - int i; - - if (!plat_data) - return -ENODEV; - - priv_data = devm_kzalloc(component->dev, sizeof(*priv_data), - GFP_KERNEL); - if (!priv_data) - return -ENOMEM; - priv_data->byt = plat_data->dsp; - snd_soc_component_set_drvdata(component, priv_data); - - for (i = 0; i < BYT_PCM_COUNT; i++) { - mutex_init(&priv_data->pcm[i].mutex); - INIT_WORK(&priv_data->pcm[i].work, sst_byt_pcm_work); - } - - return 0; -} - -static const struct snd_soc_component_driver byt_dai_component = { - .name = DRV_NAME, - .probe = sst_byt_pcm_probe, - .open = sst_byt_pcm_open, - .close = sst_byt_pcm_close, - .hw_params = sst_byt_pcm_hw_params, - .trigger = sst_byt_pcm_trigger, - .pointer = sst_byt_pcm_pointer, - .mmap = sst_byt_pcm_mmap, - .pcm_construct = sst_byt_pcm_new, -}; - -#ifdef CONFIG_PM -static int sst_byt_pcm_dev_suspend_late(struct device *dev) -{ - struct sst_pdata *sst_pdata = dev_get_platdata(dev); - struct sst_byt_priv_data *priv_data = dev_get_drvdata(dev); - int ret; - - dev_dbg(dev, "suspending late\n"); - - ret = sst_byt_dsp_suspend_late(dev, sst_pdata); - if (ret < 0) { - dev_err(dev, "failed to suspend %d\n", ret); - return ret; - } - - priv_data->restore_stream = true; - - return ret; -} - -static int sst_byt_pcm_dev_resume_early(struct device *dev) -{ - struct sst_pdata *sst_pdata = dev_get_platdata(dev); - int ret; - - dev_dbg(dev, "resume early\n"); - - /* load fw and boot DSP */ - ret = sst_byt_dsp_boot(dev, sst_pdata); - if (ret) - return ret; - - /* wait for FW to finish booting */ - return sst_byt_dsp_wait_for_ready(dev, sst_pdata); -} - -static const struct dev_pm_ops sst_byt_pm_ops = { - .suspend_late = sst_byt_pcm_dev_suspend_late, - .resume_early = sst_byt_pcm_dev_resume_early, -}; - -#define SST_BYT_PM_OPS (&sst_byt_pm_ops) -#else -#define SST_BYT_PM_OPS NULL -#endif - -static int sst_byt_pcm_dev_probe(struct platform_device *pdev) -{ - struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev); - int ret; - - ret = sst_byt_dsp_init(&pdev->dev, sst_pdata); - if (ret < 0) - return -ENODEV; - - ret = devm_snd_soc_register_component(&pdev->dev, &byt_dai_component, - byt_dais, ARRAY_SIZE(byt_dais)); - if (ret < 0) - goto err_plat; - - return 0; - -err_plat: - sst_byt_dsp_free(&pdev->dev, sst_pdata); - return ret; -} - -static int sst_byt_pcm_dev_remove(struct platform_device *pdev) -{ - struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev); - - sst_byt_dsp_free(&pdev->dev, sst_pdata); - - return 0; -} - -static struct platform_driver sst_byt_pcm_driver = { - .driver = { - .name = "baytrail-pcm-audio", - .pm = SST_BYT_PM_OPS, - }, - - .probe = sst_byt_pcm_dev_probe, - .remove = sst_byt_pcm_dev_remove, -}; -module_platform_driver(sst_byt_pcm_driver); - -MODULE_AUTHOR("Jarkko Nikula"); -MODULE_DESCRIPTION("Baytrail PCM"); -MODULE_LICENSE("GPL v2"); -MODULE_ALIAS("platform:baytrail-pcm-audio"); |