291 lines
7.1 KiB
C
291 lines
7.1 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/ac97_codec.h>
|
|
#include <sound/soc.h>
|
|
#include <sound/pxa2xx-lib.h>
|
|
#include <sound/dmaengine_pcm.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/regs-ac97.h>
|
|
#include <mach/audio.h>
|
|
|
|
#include "pxa2xx-ac97.h"
|
|
|
|
static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
|
|
{
|
|
pxa2xx_ac97_try_warm_reset(ac97);
|
|
|
|
pxa2xx_ac97_finish_reset(ac97);
|
|
}
|
|
|
|
static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
|
|
{
|
|
pxa2xx_ac97_try_cold_reset(ac97);
|
|
|
|
pxa2xx_ac97_finish_reset(ac97);
|
|
}
|
|
|
|
static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
|
|
.read = pxa2xx_ac97_read,
|
|
.write = pxa2xx_ac97_write,
|
|
.warm_reset = pxa2xx_ac97_warm_reset,
|
|
.reset = pxa2xx_ac97_cold_reset,
|
|
};
|
|
|
|
static struct pxad_param pxa2xx_ac97_pcm_stereo_in_req = {
|
|
.prio = PXAD_PRIO_LOWEST,
|
|
.drcmr = 11,
|
|
};
|
|
|
|
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
|
|
.addr = __PREG(PCDR),
|
|
.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
|
|
.maxburst = 32,
|
|
.filter_data = &pxa2xx_ac97_pcm_stereo_in_req,
|
|
};
|
|
|
|
static struct pxad_param pxa2xx_ac97_pcm_stereo_out_req = {
|
|
.prio = PXAD_PRIO_LOWEST,
|
|
.drcmr = 12,
|
|
};
|
|
|
|
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
|
|
.addr = __PREG(PCDR),
|
|
.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
|
|
.maxburst = 32,
|
|
.filter_data = &pxa2xx_ac97_pcm_stereo_out_req,
|
|
};
|
|
|
|
static struct pxad_param pxa2xx_ac97_pcm_aux_mono_out_req = {
|
|
.prio = PXAD_PRIO_LOWEST,
|
|
.drcmr = 10,
|
|
};
|
|
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = {
|
|
.addr = __PREG(MODR),
|
|
.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
|
|
.maxburst = 16,
|
|
.filter_data = &pxa2xx_ac97_pcm_aux_mono_out_req,
|
|
};
|
|
|
|
static struct pxad_param pxa2xx_ac97_pcm_aux_mono_in_req = {
|
|
.prio = PXAD_PRIO_LOWEST,
|
|
.drcmr = 9,
|
|
};
|
|
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = {
|
|
.addr = __PREG(MODR),
|
|
.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
|
|
.maxburst = 16,
|
|
.filter_data = &pxa2xx_ac97_pcm_aux_mono_in_req,
|
|
};
|
|
|
|
static struct pxad_param pxa2xx_ac97_pcm_aux_mic_mono_req = {
|
|
.prio = PXAD_PRIO_LOWEST,
|
|
.drcmr = 8,
|
|
};
|
|
static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = {
|
|
.addr = __PREG(MCDR),
|
|
.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
|
|
.maxburst = 16,
|
|
.filter_data = &pxa2xx_ac97_pcm_aux_mic_mono_req,
|
|
};
|
|
|
|
static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *cpu_dai)
|
|
{
|
|
struct snd_dmaengine_dai_dma_data *dma_data;
|
|
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
dma_data = &pxa2xx_ac97_pcm_stereo_out;
|
|
else
|
|
dma_data = &pxa2xx_ac97_pcm_stereo_in;
|
|
|
|
snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *cpu_dai)
|
|
{
|
|
struct snd_dmaengine_dai_dma_data *dma_data;
|
|
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
|
|
else
|
|
dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
|
|
|
|
snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *cpu_dai)
|
|
{
|
|
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
|
return -ENODEV;
|
|
else
|
|
snd_soc_dai_set_dma_data(cpu_dai, substream,
|
|
&pxa2xx_ac97_pcm_mic_mono_in);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
|
|
SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
|
|
SNDRV_PCM_RATE_48000)
|
|
|
|
static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
|
|
.startup = pxa2xx_ac97_hifi_startup,
|
|
};
|
|
|
|
static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
|
|
.startup = pxa2xx_ac97_aux_startup,
|
|
};
|
|
|
|
static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
|
|
.startup = pxa2xx_ac97_mic_startup,
|
|
};
|
|
|
|
/*
|
|
* There is only 1 physical AC97 interface for pxa2xx, but it
|
|
* has extra fifo's that can be used for aux DACs and ADCs.
|
|
*/
|
|
static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
|
|
{
|
|
.name = "pxa2xx-ac97",
|
|
.bus_control = true,
|
|
.playback = {
|
|
.stream_name = "AC97 Playback",
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
.rates = PXA2XX_AC97_RATES,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
|
|
.capture = {
|
|
.stream_name = "AC97 Capture",
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
.rates = PXA2XX_AC97_RATES,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
|
|
.ops = &pxa_ac97_hifi_dai_ops,
|
|
},
|
|
{
|
|
.name = "pxa2xx-ac97-aux",
|
|
.bus_control = true,
|
|
.playback = {
|
|
.stream_name = "AC97 Aux Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 1,
|
|
.rates = PXA2XX_AC97_RATES,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
|
|
.capture = {
|
|
.stream_name = "AC97 Aux Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 1,
|
|
.rates = PXA2XX_AC97_RATES,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
|
|
.ops = &pxa_ac97_aux_dai_ops,
|
|
},
|
|
{
|
|
.name = "pxa2xx-ac97-mic",
|
|
.bus_control = true,
|
|
.capture = {
|
|
.stream_name = "AC97 Mic Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 1,
|
|
.rates = PXA2XX_AC97_RATES,
|
|
.formats = SNDRV_PCM_FMTBIT_S16_LE,},
|
|
.ops = &pxa_ac97_mic_dai_ops,
|
|
},
|
|
};
|
|
|
|
static const struct snd_soc_component_driver pxa_ac97_component = {
|
|
.name = "pxa-ac97",
|
|
};
|
|
|
|
static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
|
|
if (pdev->id != -1) {
|
|
dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
|
|
return -ENXIO;
|
|
}
|
|
|
|
ret = pxa2xx_ac97_hw_probe(pdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
/* Punt most of the init to the SoC probe; we may need the machine
|
|
* driver to do interesting things with the clocking to get us up
|
|
* and running.
|
|
*/
|
|
return snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
|
|
pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
|
|
}
|
|
|
|
static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
|
|
{
|
|
snd_soc_unregister_component(&pdev->dev);
|
|
snd_soc_set_ac97_ops(NULL);
|
|
pxa2xx_ac97_hw_remove(pdev);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int pxa2xx_ac97_dev_suspend(struct device *dev)
|
|
{
|
|
return pxa2xx_ac97_hw_suspend();
|
|
}
|
|
|
|
static int pxa2xx_ac97_dev_resume(struct device *dev)
|
|
{
|
|
return pxa2xx_ac97_hw_resume();
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops,
|
|
pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume);
|
|
#endif
|
|
|
|
static struct platform_driver pxa2xx_ac97_driver = {
|
|
.probe = pxa2xx_ac97_dev_probe,
|
|
.remove = pxa2xx_ac97_dev_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");
|