From: Namarta Kohli namartax.kohli@intel.com
This patch adds the support to parse the compress dai's and then also adds the soc-compress.c file while handles the compress stream operations, mostly analogus to what is done in the soc-pcm.c and aditional handling of the compress opertaions
Signed-off-by: Namarta Kohli namartax.kohli@intel.com Signed-off-by: Ramesh Babu K V ramesh.babu@intel.com Signed-off-by: Vinod Koul vinod.koul@linux.intel.com --- sound/soc/Kconfig | 1 + sound/soc/Makefile | 2 +- sound/soc/soc-compress.c | 295 ++++++++++++++++++++++++++++++++++++++++++++++ sound/soc/soc-core.c | 57 ++++++---- 4 files changed, 331 insertions(+), 24 deletions(-) create mode 100644 sound/soc/soc-compress.c
diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig index c5de0a8..c24de90 100644 --- a/sound/soc/Kconfig +++ b/sound/soc/Kconfig @@ -9,6 +9,7 @@ menuconfig SND_SOC select SND_JACK if INPUT=y || INPUT=SND select REGMAP_I2C if I2C select REGMAP_SPI if SPI_MASTER + select SND_COMPRESS_OFFLOAD ---help---
If you want ASoC support, you should say Y here and also to the diff --git a/sound/soc/Makefile b/sound/soc/Makefile index 00a555a..c126400 100644 --- a/sound/soc/Makefile +++ b/sound/soc/Makefile @@ -1,5 +1,5 @@ snd-soc-core-objs := soc-core.o soc-dapm.o soc-jack.o soc-cache.o soc-utils.o -snd-soc-core-objs += soc-pcm.o soc-io.o +snd-soc-core-objs += soc-pcm.o soc-compress.o soc-io.o
snd-soc-dmaengine-pcm-objs := soc-dmaengine-pcm.o obj-$(CONFIG_SND_SOC_DMAENGINE_PCM) += snd-soc-dmaengine-pcm.o diff --git a/sound/soc/soc-compress.c b/sound/soc/soc-compress.c new file mode 100644 index 0000000..88d85ba --- /dev/null +++ b/sound/soc/soc-compress.c @@ -0,0 +1,295 @@ +/* + * soc-compress.c -- ALSA SoC Compress + * + * Copyright (C) 2012 Intel Corp. + * + * Authors: Namarta Kohli namartax.kohli@intel.com + * Ramesh Babu K V ramesh.babu@linux.intel.com + * Vinod Koul vinod.koul@linux.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; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/workqueue.h> +#include <sound/core.h> +#include <sound/compress_params.h> +#include <sound/compress_driver.h> +#include <sound/soc.h> +#include <sound/initval.h> + +static int soc_compr_open(struct snd_compr_stream *cstream) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + int ret = 0; + + if (platform->driver->compr_ops && platform->driver->compr_ops->open) { + ret = platform->driver->compr_ops->open(cstream); + if (ret < 0) { + pr_err("compress asoc: can't open platform %s\n", platform->name); + goto out; + } + } + + if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->startup) { + ret = rtd->dai_link->compr_ops->startup(cstream); + if (ret < 0) { + pr_err("compress asoc: %s startup failed\n", rtd->dai_link->name); + goto machine_err; + } + } + + if (cstream->direction == SND_COMPRESS_PLAYBACK) { + cpu_dai->playback_active++; + codec_dai->playback_active++; + } else { + cpu_dai->capture_active++; + codec_dai->capture_active++; + } + + cpu_dai->active++; + codec_dai->active++; + rtd->codec->active++; + + return 0; + +machine_err: + if (platform->driver->compr_ops && platform->driver->compr_ops->free) + platform->driver->compr_ops->free(cstream); +out: + return ret; +} + +static int soc_compr_free(struct snd_compr_stream *cstream) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_codec *codec = rtd->codec; + + if (cstream->direction == SND_COMPRESS_PLAYBACK) { + cpu_dai->playback_active--; + codec_dai->playback_active--; + } else { + cpu_dai->capture_active--; + codec_dai->capture_active--; + } + + snd_soc_dai_digital_mute(codec_dai, 1); + + cpu_dai->active--; + codec_dai->active--; + codec->active--; + + if (!cpu_dai->active) + cpu_dai->rate = 0; + + if (!codec_dai->active) + codec_dai->rate = 0; + + + if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->shutdown) + rtd->dai_link->compr_ops->shutdown(cstream); + + if (platform->driver->compr_ops && platform->driver->compr_ops->free) + platform->driver->compr_ops->free(cstream); + cpu_dai->runtime = NULL; + + if (cstream->direction == SND_COMPRESS_PLAYBACK) { + if (!rtd->pmdown_time || codec->ignore_pmdown_time || + rtd->dai_link->ignore_pmdown_time) { + snd_soc_dapm_stream_event(rtd, + SNDRV_PCM_STREAM_PLAYBACK, + SND_SOC_DAPM_STREAM_STOP); + } else + codec_dai->pop_wait = 1; + schedule_delayed_work(&rtd->delayed_work, + msecs_to_jiffies(rtd->pmdown_time)); + } else { + /* capture streams can be powered down now */ + snd_soc_dapm_stream_event(rtd, + SNDRV_PCM_STREAM_CAPTURE, + SND_SOC_DAPM_STREAM_STOP); + } + + return 0; +} + +static int soc_compr_trigger(struct snd_compr_stream *cstream, int cmd) +{ + + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + int ret = 0; + + if (platform->driver->compr_ops && platform->driver->compr_ops->trigger) { + ret = platform->driver->compr_ops->trigger(cstream, cmd); + if (ret < 0) + return ret; + } + + if (cmd == SNDRV_PCM_TRIGGER_START) + snd_soc_dai_digital_mute(codec_dai, 0); + else if (cmd == SNDRV_PCM_TRIGGER_STOP) + snd_soc_dai_digital_mute(codec_dai, 1); + + return ret; +} + +static int soc_compr_set_params(struct snd_compr_stream *cstream, + struct snd_compr_params *params) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + int ret = 0; + + /* first we call set_params for the platform driver + * this should configure the soc side + * if the machine has compressed ops then we call that as well + * expectation is that platform and machine will configure everything + * for this compress path, like configuring pcm port for codec + */ + if (platform->driver->compr_ops && platform->driver->compr_ops->set_params) { + ret = platform->driver->compr_ops->set_params(cstream, params); + if (ret < 0) + return ret; + } + + if (rtd->dai_link->compr_ops && rtd->dai_link->compr_ops->set_params) { + ret = rtd->dai_link->compr_ops->set_params(cstream); + if (ret < 0) + return ret; + } + + snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_PLAYBACK, + SND_SOC_DAPM_STREAM_START); + + return ret; +} + +static int soc_compr_get_params(struct snd_compr_stream *cstream, + struct snd_codec *params) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + int ret = 0; + + if (platform->driver->compr_ops && platform->driver->compr_ops->get_params) + ret = platform->driver->compr_ops->get_params(cstream, params); + + return ret; +} + +static int soc_compr_get_caps(struct snd_compr_stream *cstream, + struct snd_compr_caps *caps) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + int ret = 0; + + if (platform->driver->compr_ops && platform->driver->compr_ops->get_caps) + ret = platform->driver->compr_ops->get_caps(cstream, caps); + + return ret; +} + +static int soc_compr_get_codec_caps(struct snd_compr_stream *cstream, + struct snd_compr_codec_caps *codec) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + int ret = 0; + + if (platform->driver->compr_ops && platform->driver->compr_ops->get_codec_caps) + ret = platform->driver->compr_ops->get_codec_caps(cstream, codec); + + return ret; +} + +static int soc_compr_ack(struct snd_compr_stream *cstream, size_t bytes) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + int ret = 0; + + if (platform->driver->compr_ops && platform->driver->compr_ops->ack) + ret = platform->driver->compr_ops->ack(cstream, bytes); + + return ret; +} + +static int soc_compr_pointer(struct snd_compr_stream *cstream, + struct snd_compr_tstamp *tstamp) +{ + struct snd_soc_pcm_runtime *rtd = cstream->private_data; + struct snd_soc_platform *platform = rtd->platform; + + if (platform->driver->compr_ops && platform->driver->compr_ops->pointer) + platform->driver->compr_ops->pointer(cstream, tstamp); + + return 0; +} + +/* ASoC Compress operations */ +static struct snd_compr_ops soc_compr_ops = { + .open = soc_compr_open, + .free = soc_compr_free, + .set_params = soc_compr_set_params, + .get_params = soc_compr_get_params, + .trigger = soc_compr_trigger, + .pointer = soc_compr_pointer, + .ack = soc_compr_ack, + .get_caps = soc_compr_get_caps, + .get_codec_caps = soc_compr_get_codec_caps +}; + +/* create a new compress */ +int soc_new_compress(struct snd_soc_pcm_runtime *rtd, int num) +{ + struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct snd_compr *compr; + char new_name[64]; + int ret = 0, direction = 0; + + /* check client and interface hw capabilities */ + snprintf(new_name, sizeof(new_name), "%s %s-%d", + rtd->dai_link->stream_name, codec_dai->name, num); + direction = SND_COMPRESS_PLAYBACK; + compr = kzalloc(sizeof(*compr), GFP_KERNEL); + if (compr == NULL) { + snd_printk(KERN_ERR "Cannot allocate compr\n"); + return -ENOMEM; + } + + compr->ops = &soc_compr_ops; + mutex_init(&compr->lock); + ret = snd_compress_new(rtd->card->snd_card, num, direction, compr); + if (ret < 0) { + pr_err("compress asoc: can't create compress for codec %s\n", + codec->name); + kfree(compr); + return ret; + } + + rtd->compr = compr; + compr->private_data = rtd; + + printk(KERN_INFO "compress asoc: %s <-> %s mapping ok\n", codec_dai->name, + cpu_dai->name); + return ret; +} diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index f585d02..c7a00fd 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1388,37 +1388,48 @@ static int soc_probe_link_dais(struct snd_soc_card *card, int num, int order) if (ret < 0) pr_warn("asoc: failed to add pmdown_time sysfs:%d\n", ret);
- if (!dai_link->params) { - /* create the pcm */ - ret = soc_new_pcm(rtd, num); + if (cpu_dai->driver->compress_dai) { + /*create compress_device"*/ + ret = soc_new_compress(rtd, num); if (ret < 0) { - pr_err("asoc: can't create pcm %s :%d\n", - dai_link->stream_name, ret); + pr_err("asoc: can't create compress %s\n", + dai_link->stream_name); return ret; } } else { - /* link the DAI widgets */ - play_w = codec_dai->playback_widget; - capture_w = cpu_dai->capture_widget; - if (play_w && capture_w) { - ret = snd_soc_dapm_new_pcm(card, dai_link->params, - capture_w, play_w); - if (ret != 0) { - dev_err(card->dev, "Can't link %s to %s: %d\n", - play_w->name, capture_w->name, ret); + + if (!dai_link->params) { + /* create the pcm */ + ret = soc_new_pcm(rtd, num); + if (ret < 0) { + pr_err("asoc: can't create pcm %s :%d\n", + dai_link->stream_name, ret); return ret; } - } + } else { + /* link the DAI widgets */ + play_w = codec_dai->playback_widget; + capture_w = cpu_dai->capture_widget; + if (play_w && capture_w) { + ret = snd_soc_dapm_new_pcm(card, dai_link->params, + capture_w, play_w); + if (ret != 0) { + dev_err(card->dev, "Can't link %s to %s: %d\n", + play_w->name, capture_w->name, ret); + return ret; + } + }
- play_w = cpu_dai->playback_widget; - capture_w = codec_dai->capture_widget; - if (play_w && capture_w) { - ret = snd_soc_dapm_new_pcm(card, dai_link->params, + play_w = cpu_dai->playback_widget; + capture_w = codec_dai->capture_widget; + if (play_w && capture_w) { + ret = snd_soc_dapm_new_pcm(card, dai_link->params, capture_w, play_w); - if (ret != 0) { - dev_err(card->dev, "Can't link %s to %s: %d\n", - play_w->name, capture_w->name, ret); - return ret; + if (ret != 0) { + dev_err(card->dev, "Can't link %s to %s: %d\n", + play_w->name, capture_w->name, ret); + return ret; + } } } }