6f8acad646
All pxa library functions don't use the input parameters for nothing but slot number. This simplifies their prototypes, and makes them usable by both the legacy ac97 bus and the new ac97 bus. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
308 lines
7.5 KiB
C
308 lines
7.5 KiB
C
/*
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* linux/sound/pxa2xx-ac97.c -- AC97 support for the Intel PXA2xx chip.
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*
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* Author: Nicolas Pitre
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* Created: Dec 02, 2004
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* Copyright: MontaVista Software Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/dmaengine.h>
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#include <linux/dma/pxa-dma.h>
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#include <sound/core.h>
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#include <sound/ac97_codec.h>
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#include <sound/soc.h>
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#include <sound/pxa2xx-lib.h>
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#include <sound/dmaengine_pcm.h>
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#include <mach/hardware.h>
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#include <mach/regs-ac97.h>
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#include <mach/audio.h>
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static void pxa2xx_ac97_warm_reset(struct snd_ac97 *ac97)
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{
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pxa2xx_ac97_try_warm_reset();
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pxa2xx_ac97_finish_reset();
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}
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static void pxa2xx_ac97_cold_reset(struct snd_ac97 *ac97)
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{
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pxa2xx_ac97_try_cold_reset();
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pxa2xx_ac97_finish_reset();
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}
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static unsigned short pxa2xx_ac97_legacy_read(struct snd_ac97 *ac97,
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unsigned short reg)
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{
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int ret;
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ret = pxa2xx_ac97_read(ac97->num, reg);
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if (ret < 0)
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return 0;
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else
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return (unsigned short)(ret & 0xffff);
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}
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static void pxa2xx_ac97_legacy_write(struct snd_ac97 *ac97,
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unsigned short reg, unsigned short val)
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{
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int ret;
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ret = pxa2xx_ac97_write(ac97->num, reg, val);
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}
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static struct snd_ac97_bus_ops pxa2xx_ac97_ops = {
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.read = pxa2xx_ac97_legacy_read,
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.write = pxa2xx_ac97_legacy_write,
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.warm_reset = pxa2xx_ac97_warm_reset,
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.reset = pxa2xx_ac97_cold_reset,
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};
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static struct pxad_param pxa2xx_ac97_pcm_stereo_in_req = {
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.prio = PXAD_PRIO_LOWEST,
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.drcmr = 11,
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};
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_in = {
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.addr = __PREG(PCDR),
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.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
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.maxburst = 32,
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.filter_data = &pxa2xx_ac97_pcm_stereo_in_req,
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};
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static struct pxad_param pxa2xx_ac97_pcm_stereo_out_req = {
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.prio = PXAD_PRIO_LOWEST,
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.drcmr = 12,
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};
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_stereo_out = {
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.addr = __PREG(PCDR),
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.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES,
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.maxburst = 32,
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.filter_data = &pxa2xx_ac97_pcm_stereo_out_req,
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};
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static struct pxad_param pxa2xx_ac97_pcm_aux_mono_out_req = {
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.prio = PXAD_PRIO_LOWEST,
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.drcmr = 10,
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};
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_out = {
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.addr = __PREG(MODR),
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.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
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.maxburst = 16,
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.filter_data = &pxa2xx_ac97_pcm_aux_mono_out_req,
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};
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static struct pxad_param pxa2xx_ac97_pcm_aux_mono_in_req = {
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.prio = PXAD_PRIO_LOWEST,
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.drcmr = 9,
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};
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_aux_mono_in = {
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.addr = __PREG(MODR),
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.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
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.maxburst = 16,
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.filter_data = &pxa2xx_ac97_pcm_aux_mono_in_req,
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};
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static struct pxad_param pxa2xx_ac97_pcm_aux_mic_mono_req = {
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.prio = PXAD_PRIO_LOWEST,
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.drcmr = 8,
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};
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static struct snd_dmaengine_dai_dma_data pxa2xx_ac97_pcm_mic_mono_in = {
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.addr = __PREG(MCDR),
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.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES,
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.maxburst = 16,
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.filter_data = &pxa2xx_ac97_pcm_aux_mic_mono_req,
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};
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static int pxa2xx_ac97_hifi_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *cpu_dai)
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{
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struct snd_dmaengine_dai_dma_data *dma_data;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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dma_data = &pxa2xx_ac97_pcm_stereo_out;
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else
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dma_data = &pxa2xx_ac97_pcm_stereo_in;
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snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
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return 0;
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}
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static int pxa2xx_ac97_aux_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *cpu_dai)
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{
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struct snd_dmaengine_dai_dma_data *dma_data;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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dma_data = &pxa2xx_ac97_pcm_aux_mono_out;
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else
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dma_data = &pxa2xx_ac97_pcm_aux_mono_in;
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snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data);
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return 0;
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}
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static int pxa2xx_ac97_mic_startup(struct snd_pcm_substream *substream,
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struct snd_soc_dai *cpu_dai)
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{
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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return -ENODEV;
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snd_soc_dai_set_dma_data(cpu_dai, substream,
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&pxa2xx_ac97_pcm_mic_mono_in);
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return 0;
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}
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#define PXA2XX_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
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SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
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SNDRV_PCM_RATE_48000)
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static const struct snd_soc_dai_ops pxa_ac97_hifi_dai_ops = {
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.startup = pxa2xx_ac97_hifi_startup,
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};
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static const struct snd_soc_dai_ops pxa_ac97_aux_dai_ops = {
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.startup = pxa2xx_ac97_aux_startup,
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};
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static const struct snd_soc_dai_ops pxa_ac97_mic_dai_ops = {
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.startup = pxa2xx_ac97_mic_startup,
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};
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/*
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* There is only 1 physical AC97 interface for pxa2xx, but it
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* has extra fifo's that can be used for aux DACs and ADCs.
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*/
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static struct snd_soc_dai_driver pxa_ac97_dai_driver[] = {
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{
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.name = "pxa2xx-ac97",
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.bus_control = true,
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.playback = {
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.stream_name = "AC97 Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.capture = {
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.stream_name = "AC97 Capture",
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.channels_min = 2,
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.channels_max = 2,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = &pxa_ac97_hifi_dai_ops,
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},
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{
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.name = "pxa2xx-ac97-aux",
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.bus_control = true,
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.playback = {
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.stream_name = "AC97 Aux Playback",
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.channels_min = 1,
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.channels_max = 1,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.capture = {
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.stream_name = "AC97 Aux Capture",
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.channels_min = 1,
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.channels_max = 1,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = &pxa_ac97_aux_dai_ops,
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},
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{
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.name = "pxa2xx-ac97-mic",
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.bus_control = true,
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.capture = {
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.stream_name = "AC97 Mic Capture",
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.channels_min = 1,
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.channels_max = 1,
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.rates = PXA2XX_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = &pxa_ac97_mic_dai_ops,
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},
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};
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static const struct snd_soc_component_driver pxa_ac97_component = {
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.name = "pxa-ac97",
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};
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static int pxa2xx_ac97_dev_probe(struct platform_device *pdev)
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{
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int ret;
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if (pdev->id != -1) {
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dev_err(&pdev->dev, "PXA2xx has only one AC97 port.\n");
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return -ENXIO;
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}
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ret = pxa2xx_ac97_hw_probe(pdev);
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if (ret) {
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dev_err(&pdev->dev, "PXA2xx AC97 hw probe error (%d)\n", ret);
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return ret;
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}
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ret = snd_soc_set_ac97_ops(&pxa2xx_ac97_ops);
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if (ret != 0)
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return ret;
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/* Punt most of the init to the SoC probe; we may need the machine
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* driver to do interesting things with the clocking to get us up
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* and running.
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*/
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return snd_soc_register_component(&pdev->dev, &pxa_ac97_component,
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pxa_ac97_dai_driver, ARRAY_SIZE(pxa_ac97_dai_driver));
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}
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static int pxa2xx_ac97_dev_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_component(&pdev->dev);
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snd_soc_set_ac97_ops(NULL);
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pxa2xx_ac97_hw_remove(pdev);
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return 0;
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}
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#ifdef CONFIG_PM_SLEEP
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static int pxa2xx_ac97_dev_suspend(struct device *dev)
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{
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return pxa2xx_ac97_hw_suspend();
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}
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static int pxa2xx_ac97_dev_resume(struct device *dev)
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{
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return pxa2xx_ac97_hw_resume();
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}
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static SIMPLE_DEV_PM_OPS(pxa2xx_ac97_pm_ops,
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pxa2xx_ac97_dev_suspend, pxa2xx_ac97_dev_resume);
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#endif
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static struct platform_driver pxa2xx_ac97_driver = {
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.probe = pxa2xx_ac97_dev_probe,
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.remove = pxa2xx_ac97_dev_remove,
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.driver = {
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.name = "pxa2xx-ac97",
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#ifdef CONFIG_PM_SLEEP
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.pm = &pxa2xx_ac97_pm_ops,
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#endif
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},
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};
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module_platform_driver(pxa2xx_ac97_driver);
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MODULE_AUTHOR("Nicolas Pitre");
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MODULE_DESCRIPTION("AC97 driver for the Intel PXA2xx chip");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:pxa2xx-ac97");
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