diff options
Diffstat (limited to 'sound/soc/intel/atom/sst-mfld-platform-compress.c')
| -rw-r--r-- | sound/soc/intel/atom/sst-mfld-platform-compress.c | 271 |
1 files changed, 271 insertions, 0 deletions
diff --git a/sound/soc/intel/atom/sst-mfld-platform-compress.c b/sound/soc/intel/atom/sst-mfld-platform-compress.c new file mode 100644 index 000000000..89c9c5ad6 --- /dev/null +++ b/sound/soc/intel/atom/sst-mfld-platform-compress.c @@ -0,0 +1,271 @@ +// 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> + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#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 "sst-mfld-platform.h" + +/* compress stream operations */ +static void sst_compr_fragment_elapsed(void *arg) +{ + struct snd_compr_stream *cstream = (struct snd_compr_stream *)arg; + + pr_debug("fragment elapsed by driver\n"); + if (cstream) + snd_compr_fragment_elapsed(cstream); +} + +static void sst_drain_notify(void *arg) +{ + struct snd_compr_stream *cstream = (struct snd_compr_stream *)arg; + + pr_debug("drain notify by driver\n"); + if (cstream) + snd_compr_drain_notify(cstream); +} + +static int sst_platform_compr_open(struct snd_soc_component *component, + struct snd_compr_stream *cstream) +{ + int ret_val; + struct snd_compr_runtime *runtime = cstream->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 */ + if (!sst || !try_module_get(sst->dev->driver->owner)) { + pr_err("no device available to run\n"); + ret_val = -ENODEV; + goto out_ops; + } + stream->compr_ops = sst->compr_ops; + stream->id = 0; + + /* Turn on LPE */ + sst->compr_ops->power(sst->dev, true); + + sst_set_stream_status(stream, SST_PLATFORM_INIT); + runtime->private_data = stream; + return 0; +out_ops: + kfree(stream); + return ret_val; +} + +static int sst_platform_compr_free(struct snd_soc_component *component, + struct snd_compr_stream *cstream) +{ + struct sst_runtime_stream *stream; + int ret_val = 0, str_id; + + stream = cstream->runtime->private_data; + /* Turn off LPE */ + sst->compr_ops->power(sst->dev, false); + + /*need to check*/ + str_id = stream->id; + if (str_id) + ret_val = stream->compr_ops->close(sst->dev, str_id); + module_put(sst->dev->driver->owner); + kfree(stream); + pr_debug("%s: %d\n", __func__, ret_val); + return 0; +} + +static int sst_platform_compr_set_params(struct snd_soc_component *component, + struct snd_compr_stream *cstream, + struct snd_compr_params *params) +{ + struct sst_runtime_stream *stream; + int retval; + struct snd_sst_params str_params; + struct sst_compress_cb cb; + struct sst_data *ctx = snd_soc_component_get_drvdata(component); + + stream = cstream->runtime->private_data; + /* construct fw structure for this*/ + memset(&str_params, 0, sizeof(str_params)); + + /* fill the device type and stream id to pass to SST driver */ + retval = sst_fill_stream_params(cstream, ctx, &str_params, true); + pr_debug("compr_set_params: fill stream params ret_val = 0x%x\n", retval); + if (retval < 0) + return retval; + + switch (params->codec.id) { + case SND_AUDIOCODEC_MP3: { + str_params.codec = SST_CODEC_TYPE_MP3; + str_params.sparams.uc.mp3_params.num_chan = params->codec.ch_in; + str_params.sparams.uc.mp3_params.pcm_wd_sz = 16; + break; + } + + case SND_AUDIOCODEC_AAC: { + str_params.codec = SST_CODEC_TYPE_AAC; + str_params.sparams.uc.aac_params.num_chan = params->codec.ch_in; + str_params.sparams.uc.aac_params.pcm_wd_sz = 16; + if (params->codec.format == SND_AUDIOSTREAMFORMAT_MP4ADTS) + str_params.sparams.uc.aac_params.bs_format = + AAC_BIT_STREAM_ADTS; + else if (params->codec.format == SND_AUDIOSTREAMFORMAT_RAW) + str_params.sparams.uc.aac_params.bs_format = + AAC_BIT_STREAM_RAW; + else { + pr_err("Undefined format%d\n", params->codec.format); + return -EINVAL; + } + str_params.sparams.uc.aac_params.externalsr = + params->codec.sample_rate; + break; + } + + default: + pr_err("codec not supported, id =%d\n", params->codec.id); + return -EINVAL; + } + + str_params.aparams.ring_buf_info[0].addr = + virt_to_phys(cstream->runtime->buffer); + str_params.aparams.ring_buf_info[0].size = + cstream->runtime->buffer_size; + str_params.aparams.sg_count = 1; + str_params.aparams.frag_size = cstream->runtime->fragment_size; + + cb.param = cstream; + cb.compr_cb = sst_compr_fragment_elapsed; + cb.drain_cb_param = cstream; + cb.drain_notify = sst_drain_notify; + + retval = stream->compr_ops->open(sst->dev, &str_params, &cb); + if (retval < 0) { + pr_err("stream allocation failed %d\n", retval); + return retval; + } + + stream->id = retval; + return 0; +} + +static int sst_platform_compr_trigger(struct snd_soc_component *component, + struct snd_compr_stream *cstream, int cmd) +{ + struct sst_runtime_stream *stream = cstream->runtime->private_data; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + if (stream->compr_ops->stream_start) + return stream->compr_ops->stream_start(sst->dev, stream->id); + break; + case SNDRV_PCM_TRIGGER_STOP: + if (stream->compr_ops->stream_drop) + return stream->compr_ops->stream_drop(sst->dev, stream->id); + break; + case SND_COMPR_TRIGGER_DRAIN: + if (stream->compr_ops->stream_drain) + return stream->compr_ops->stream_drain(sst->dev, stream->id); + break; + case SND_COMPR_TRIGGER_PARTIAL_DRAIN: + if (stream->compr_ops->stream_partial_drain) + return stream->compr_ops->stream_partial_drain(sst->dev, stream->id); + break; + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (stream->compr_ops->stream_pause) + return stream->compr_ops->stream_pause(sst->dev, stream->id); + break; + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (stream->compr_ops->stream_pause_release) + return stream->compr_ops->stream_pause_release(sst->dev, stream->id); + break; + } + return -EINVAL; +} + +static int sst_platform_compr_pointer(struct snd_soc_component *component, + struct snd_compr_stream *cstream, + struct snd_compr_tstamp *tstamp) +{ + struct sst_runtime_stream *stream; + + stream = cstream->runtime->private_data; + stream->compr_ops->tstamp(sst->dev, stream->id, tstamp); + tstamp->byte_offset = tstamp->copied_total % + (u32)cstream->runtime->buffer_size; + pr_debug("calc bytes offset/copied bytes as %d\n", tstamp->byte_offset); + return 0; +} + +static int sst_platform_compr_ack(struct snd_soc_component *component, + struct snd_compr_stream *cstream, + size_t bytes) +{ + struct sst_runtime_stream *stream; + + stream = cstream->runtime->private_data; + stream->compr_ops->ack(sst->dev, stream->id, (unsigned long)bytes); + stream->bytes_written += bytes; + + return 0; +} + +static int sst_platform_compr_get_caps(struct snd_soc_component *component, + struct snd_compr_stream *cstream, + struct snd_compr_caps *caps) +{ + struct sst_runtime_stream *stream = + cstream->runtime->private_data; + + return stream->compr_ops->get_caps(caps); +} + +static int sst_platform_compr_get_codec_caps(struct snd_soc_component *component, + struct snd_compr_stream *cstream, + struct snd_compr_codec_caps *codec) +{ + struct sst_runtime_stream *stream = + cstream->runtime->private_data; + + return stream->compr_ops->get_codec_caps(codec); +} + +static int sst_platform_compr_set_metadata(struct snd_soc_component *component, + struct snd_compr_stream *cstream, + struct snd_compr_metadata *metadata) +{ + struct sst_runtime_stream *stream = + cstream->runtime->private_data; + + return stream->compr_ops->set_metadata(sst->dev, stream->id, metadata); +} + +const struct snd_compress_ops sst_platform_compress_ops = { + + .open = sst_platform_compr_open, + .free = sst_platform_compr_free, + .set_params = sst_platform_compr_set_params, + .set_metadata = sst_platform_compr_set_metadata, + .trigger = sst_platform_compr_trigger, + .pointer = sst_platform_compr_pointer, + .ack = sst_platform_compr_ack, + .get_caps = sst_platform_compr_get_caps, + .get_codec_caps = sst_platform_compr_get_codec_caps, +}; |