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/*
* 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/module.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/ac97_codec.h>
#include <sound/soc.h>
#include <sound/pxa2xx-lib.h>
#include <mach/hardware.h>
#include <mach/regs-ac97.h>
#include <mach/dma.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);
}
struct snd_ac97_bus_ops soc_ac97_ops = {
.read = pxa2xx_ac97_read,
.write = pxa2xx_ac97_write,
.warm_reset = pxa2xx_ac97_warm_reset,
.reset = pxa2xx_ac97_cold_reset,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_out = {
.name = "AC97 PCM Stereo out",
.dev_addr = __PREG(PCDR),
.drcmr = &DRCMR(12),
.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
DCMD_BURST32 | DCMD_WIDTH4,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_stereo_in = {
.name = "AC97 PCM Stereo in",
.dev_addr = __PREG(PCDR),
.drcmr = &DRCMR(11),
.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
DCMD_BURST32 | DCMD_WIDTH4,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_out = {
.name = "AC97 Aux PCM (Slot 5) Mono out",
.dev_addr = __PREG(MODR),
.drcmr = &DRCMR(10),
.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
DCMD_BURST16 | DCMD_WIDTH2,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_aux_mono_in = {
.name = "AC97 Aux PCM (Slot 5) Mono in",
.dev_addr = __PREG(MODR),
.drcmr = &DRCMR(9),
.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
DCMD_BURST16 | DCMD_WIDTH2,
};
static struct pxa2xx_pcm_dma_params pxa2xx_ac97_pcm_mic_mono_in = {
.name = "AC97 Mic PCM (Slot 6) Mono in",
.dev_addr = __PREG(MCDR),
.drcmr = &DRCMR(8),
.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
DCMD_BURST16 | DCMD_WIDTH2,
};
#ifdef CONFIG_PM
static int pxa2xx_ac97_suspend(struct snd_soc_dai *dai)
{
return pxa2xx_ac97_hw_suspend();
}
static int pxa2xx_ac97_resume(struct snd_soc_dai *dai)
{
return pxa2xx_ac97_hw_resume();
}
#else
#define pxa2xx_ac97_suspend NULL
#define pxa2xx_ac97_resume NULL
#endif
static int pxa2xx_ac97_probe(struct snd_soc_dai *dai)
{
return pxa2xx_ac97_hw_probe(to_platform_device(dai->dev));
}
static int pxa2xx_ac97_remove(struct snd_soc_dai *dai)
{
pxa2xx_ac97_hw_remove(to_platform_device(dai->dev));
return 0;
}
static int pxa2xx_ac97_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *cpu_dai)
{
struct pxa2xx_pcm_dma_params *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_hw_aux_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *cpu_dai)
{
struct pxa2xx_pcm_dma_params *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_hw_mic_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
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 = {
.hw_params = pxa2xx_ac97_hw_params,
};
static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
.hw_params = pxa2xx_ac97_hw_aux_params,
};
static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
.hw_params = pxa2xx_ac97_hw_mic_params,
};
/*
* 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[] = {
{
.name = "pxa2xx-ac97",
.ac97_control = 1,
.probe = pxa2xx_ac97_probe,
.remove = pxa2xx_ac97_remove,
.suspend = pxa2xx_ac97_suspend,
.resume = pxa2xx_ac97_resume,
.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",
.ac97_control = 1,
.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",
.ac97_control = 1,
.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,
},
};
EXPORT_SYMBOL_GPL(soc_ac97_ops);
static __devinit int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
{
if (pdev->id != -1) {
dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
return -ENXIO;
}
/* 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_dais(&pdev->dev, pxa_ac97_dai,
ARRAY_SIZE(pxa_ac97_dai));
}
static int __devexit pxa2xx_ac97_dev_remove(struct platform_device *pdev)
{
snd_soc_unregister_dais(&pdev->dev, ARRAY_SIZE(pxa_ac97_dai));
return 0;
}
static struct platform_driver pxa2xx_ac97_driver = {
.probe = pxa2xx_ac97_dev_probe,
.remove = __devexit_p(pxa2xx_ac97_dev_remove),
.driver = {
.name = "pxa2xx-ac97",
.owner = THIS_MODULE,
},
};
static int __init pxa_ac97_init(void)
{
return platform_driver_register(&pxa2xx_ac97_driver);
}
module_init(pxa_ac97_init);
static void __exit pxa_ac97_exit(void)
{
platform_driver_unregister(&pxa2xx_ac97_driver);
}
module_exit(pxa_ac97_exit);
MODULE_AUTHOR("Nicolas Pitre");
MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
MODULE_LICENSE("GPL");
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