forked from luck/tmp_suning_uos_patched
58ceb57ec1
This patch removes the old PXA DMA API usage and switches over to generic functions provided by snd-soc-dmaengine-pcm. More cleanups may be done on top of this, and some function stubs can now be removed completetly. However, the intention here was to keep the transition as small as possible. This was tested on the mioa701 pxa27x board. Signed-off-by: Daniel Mack <zonque@gmail.com> [trivial change from mmp-dma to pxa-dma] Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
265 lines
6.4 KiB
C
265 lines
6.4 KiB
C
/*
|
|
* linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
|
|
*
|
|
* Author: Nicolas Pitre
|
|
* Created: Dec 02, 2004
|
|
* Copyright: MontaVista Software Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/io.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/dmaengine.h>
|
|
#include <linux/dma/pxa-dma.h>
|
|
|
|
#include <sound/core.h>
|
|
#include <sound/pcm.h>
|
|
#include <sound/ac97_codec.h>
|
|
#include <sound/initval.h>
|
|
#include <sound/pxa2xx-lib.h>
|
|
#include <sound/dmaengine_pcm.h>
|
|
|
|
#include <mach/regs-ac97.h>
|
|
#include <mach/audio.h>
|
|
|
|
#include "pxa2xx-pcm.h"
|
|
|
|
static void pxa2xx_ac97_reset(struct snd_ac97 *ac97)
|
|
{
|
|
if (!pxa2xx_ac97_try_cold_reset(ac97)) {
|
|
pxa2xx_ac97_try_warm_reset(ac97);
|
|
}
|
|
|
|
pxa2xx_ac97_finish_reset(ac97);
|
|
}
|
|
|
|
static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
|
|
.read = pxa2xx_ac97_read,
|
|
.write = pxa2xx_ac97_write,
|
|
.reset = pxa2xx_ac97_reset,
|
|
};
|
|
|
|
static struct pxad_param pxa2xx_ac97_pcm_out_req = {
|
|
.prio = PXAD_PRIO_LOWEST,
|
|
.drcmr = 12,
|
|
};
|
|
|
|
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_out = {
|
|
.addr = __PREG(PCDR),
|
|
.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
|
|
.maxburst = 32,
|
|
.filter_data = &pxa2xx_ac97_pcm_out_req,
|
|
};
|
|
|
|
static struct pxad_param pxa2xx_ac97_pcm_in_req = {
|
|
.prio = PXAD_PRIO_LOWEST,
|
|
.drcmr = 11,
|
|
};
|
|
|
|
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_in = {
|
|
.addr = __PREG(PCDR),
|
|
.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
|
|
.maxburst = 32,
|
|
.filter_data = &pxa2xx_ac97_pcm_in_req,
|
|
};
|
|
|
|
static struct snd_pcm *pxa2xx_ac97_pcm;
|
|
static struct snd_ac97 *pxa2xx_ac97_ac97;
|
|
|
|
static int pxa2xx_ac97_pcm_startup(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
pxa2xx_audio_ops_t *platform_ops;
|
|
int r;
|
|
|
|
runtime->hw.channels_min = 2;
|
|
runtime->hw.channels_max = 2;
|
|
|
|
r = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
|
|
AC97_RATES_FRONT_DAC : AC97_RATES_ADC;
|
|
runtime->hw.rates = pxa2xx_ac97_ac97->rates[r];
|
|
snd_pcm_limit_hw_rates(runtime);
|
|
|
|
platform_ops = substream->pcm->card->dev->platform_data;
|
|
if (platform_ops && platform_ops->startup)
|
|
return platform_ops->startup(substream, platform_ops->priv);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static void pxa2xx_ac97_pcm_shutdown(struct snd_pcm_substream *substream)
|
|
{
|
|
pxa2xx_audio_ops_t *platform_ops;
|
|
|
|
platform_ops = substream->pcm->card->dev->platform_data;
|
|
if (platform_ops && platform_ops->shutdown)
|
|
platform_ops->shutdown(substream, platform_ops->priv);
|
|
}
|
|
|
|
static int pxa2xx_ac97_pcm_prepare(struct snd_pcm_substream *substream)
|
|
{
|
|
struct snd_pcm_runtime *runtime = substream->runtime;
|
|
int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
|
|
AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
|
|
return snd_ac97_set_rate(pxa2xx_ac97_ac97, reg, runtime->rate);
|
|
}
|
|
|
|
static struct pxa2xx_pcm_client pxa2xx_ac97_pcm_client = {
|
|
.playback_params = &pxa2xx_ac97_pcm_out,
|
|
.capture_params = &pxa2xx_ac97_pcm_in,
|
|
.startup = pxa2xx_ac97_pcm_startup,
|
|
.shutdown = pxa2xx_ac97_pcm_shutdown,
|
|
.prepare = pxa2xx_ac97_pcm_prepare,
|
|
};
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
|
|
static int pxa2xx_ac97_do_suspend(struct snd_card *card)
|
|
{
|
|
pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
|
|
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D3cold);
|
|
snd_pcm_suspend_all(pxa2xx_ac97_pcm);
|
|
snd_ac97_suspend(pxa2xx_ac97_ac97);
|
|
if (platform_ops && platform_ops->suspend)
|
|
platform_ops->suspend(platform_ops->priv);
|
|
|
|
return pxa2xx_ac97_hw_suspend();
|
|
}
|
|
|
|
static int pxa2xx_ac97_do_resume(struct snd_card *card)
|
|
{
|
|
pxa2xx_audio_ops_t *platform_ops = card->dev->platform_data;
|
|
int rc;
|
|
|
|
rc = pxa2xx_ac97_hw_resume();
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (platform_ops && platform_ops->resume)
|
|
platform_ops->resume(platform_ops->priv);
|
|
snd_ac97_resume(pxa2xx_ac97_ac97);
|
|
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pxa2xx_ac97_suspend(struct device *dev)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(dev);
|
|
int ret = 0;
|
|
|
|
if (card)
|
|
ret = pxa2xx_ac97_do_suspend(card);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pxa2xx_ac97_resume(struct device *dev)
|
|
{
|
|
struct snd_card *card = dev_get_drvdata(dev);
|
|
int ret = 0;
|
|
|
|
if (card)
|
|
ret = pxa2xx_ac97_do_resume(card);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops, pxa2xx_ac97_suspend, pxa2xx_ac97_resume);
|
|
#endif
|
|
|
|
static int pxa2xx_ac97_probe(struct platform_device *dev)
|
|
{
|
|
struct snd_card *card;
|
|
struct snd_ac97_bus *ac97_bus;
|
|
struct snd_ac97_template ac97_template;
|
|
int ret;
|
|
pxa2xx_audio_ops_t *pdata = dev->dev.platform_data;
|
|
|
|
if (dev->id >= 0) {
|
|
dev_err(&dev->dev, "PXA2xx has only one AC97 port.\n");
|
|
ret = -ENXIO;
|
|
goto err_dev;
|
|
}
|
|
|
|
ret = snd_card_new(&dev->dev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1,
|
|
THIS_MODULE, 0, &card);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
strlcpy(card->driver, dev->dev.driver->name, sizeof(card->driver));
|
|
|
|
ret = pxa2xx_pcm_new(card, &pxa2xx_ac97_pcm_client, &pxa2xx_ac97_pcm);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = pxa2xx_ac97_hw_probe(dev);
|
|
if (ret)
|
|
goto err;
|
|
|
|
ret = snd_ac97_bus(card, 0, &pxa2xx_ac97_ops, NULL, &ac97_bus);
|
|
if (ret)
|
|
goto err_remove;
|
|
memset(&ac97_template, 0, sizeof(ac97_template));
|
|
ret = snd_ac97_mixer(ac97_bus, &ac97_template, &pxa2xx_ac97_ac97);
|
|
if (ret)
|
|
goto err_remove;
|
|
|
|
snprintf(card->shortname, sizeof(card->shortname),
|
|
"%s", snd_ac97_get_short_name(pxa2xx_ac97_ac97));
|
|
snprintf(card->longname, sizeof(card->longname),
|
|
"%s (%s)", dev->dev.driver->name, card->mixername);
|
|
|
|
if (pdata && pdata->codec_pdata[0])
|
|
snd_ac97_dev_add_pdata(ac97_bus->codec[0], pdata->codec_pdata[0]);
|
|
ret = snd_card_register(card);
|
|
if (ret == 0) {
|
|
platform_set_drvdata(dev, card);
|
|
return 0;
|
|
}
|
|
|
|
err_remove:
|
|
pxa2xx_ac97_hw_remove(dev);
|
|
err:
|
|
if (card)
|
|
snd_card_free(card);
|
|
err_dev:
|
|
return ret;
|
|
}
|
|
|
|
static int pxa2xx_ac97_remove(struct platform_device *dev)
|
|
{
|
|
struct snd_card *card = platform_get_drvdata(dev);
|
|
|
|
if (card) {
|
|
snd_card_free(card);
|
|
pxa2xx_ac97_hw_remove(dev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver pxa2xx_ac97_driver = {
|
|
.probe = pxa2xx_ac97_probe,
|
|
.remove = pxa2xx_ac97_remove,
|
|
.driver = {
|
|
.name = "pxa2xx-ac97",
|
|
#ifdef CONFIG_PM_SLEEP
|
|
.pm = &pxa2xx_ac97_pm_ops,
|
|
#endif
|
|
},
|
|
};
|
|
|
|
module_platform_driver(pxa2xx_ac97_driver);
|
|
|
|
MODULE_AUTHOR("Nicolas Pitre");
|
|
MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("platform:pxa2xx-ac97");
|