mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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dc3d3f1c49
it's basically also provided by ingenic and nativly based on 2.6.27, adjusted to fit into the OpenWrt-environment
262 lines
6.1 KiB
C
Executable File
262 lines
6.1 KiB
C
Executable File
/*
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* linux/sound/jz4740-ac97.c -- AC97 support for the Ingenic jz4740 chip.
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*
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* Author: Richard
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* Created: Dec 02, 2007
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* Copyright: Ingenic Semiconductor 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/module.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/wait.h>
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#include <linux/delay.h>
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#include <sound/driver.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/ac97_codec.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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#include <asm/irq.h>
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#include <linux/mutex.h>
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#include <asm/hardware.h>
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#include <asm/arch/audio.h>
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#include "jz4740-pcm.h"
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#include "jz4740-ac97.h"
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static DEFINE_MUTEX(car_mutex);
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static DECLARE_WAIT_QUEUE_HEAD(gsr_wq);
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static volatile long gsr_bits;
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static unsigned short jz4740_ac97_read(struct snd_ac97 *ac97,
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unsigned short reg)
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{
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unsigned short val = -1;
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volatile u32 *reg_addr;
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mutex_lock(&car_mutex);
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out: mutex_unlock(&car_mutex);
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return val;
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}
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static void jz4740_ac97_write(struct snd_ac97 *ac97, unsigned short reg,
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unsigned short val)
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{
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volatile u32 *reg_addr;
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mutex_lock(&car_mutex);
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mutex_unlock(&car_mutex);
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}
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static void jz4740_ac97_warm_reset(struct snd_ac97 *ac97)
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{
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gsr_bits = 0;
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}
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static void jz4740_ac97_cold_reset(struct snd_ac97 *ac97)
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{
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}
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static irqreturn_t jz4740_ac97_irq(int irq, void *dev_id)
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{
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long status;
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return IRQ_NONE;
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}
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struct snd_ac97_bus_ops soc_ac97_ops = {
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.read = jz4740_ac97_read,
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.write = jz4740_ac97_write,
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.warm_reset = jz4740_ac97_warm_reset,
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.reset = jz4740_ac97_cold_reset,
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};
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static struct jz4740_pcm_dma_params jz4740_ac97_pcm_stereo_out = {
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.name = "AC97 PCM Stereo out",
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.dev_addr = __PREG(PCDR),
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.drcmr = &DRCMRTXPCDR,
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST32 | DCMD_WIDTH4,
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};
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static struct jz4740_pcm_dma_params jz4740_ac97_pcm_stereo_in = {
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.name = "AC97 PCM Stereo in",
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.dev_addr = __PREG(PCDR),
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.drcmr = &DRCMRRXPCDR,
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST32 | DCMD_WIDTH4,
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};
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static struct jz4740_pcm_dma_params jz4740_ac97_pcm_aux_mono_out = {
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.name = "AC97 Aux PCM (Slot 5) Mono out",
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.dev_addr = __PREG(MODR),
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.drcmr = &DRCMRTXMODR,
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.dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct jz4740_pcm_dma_params jz4740_ac97_pcm_aux_mono_in = {
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.name = "AC97 Aux PCM (Slot 5) Mono in",
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.dev_addr = __PREG(MODR),
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.drcmr = &DRCMRRXMODR,
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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static struct jz4740_pcm_dma_params jz4740_ac97_pcm_mic_mono_in = {
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.name = "AC97 Mic PCM (Slot 6) Mono in",
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.dev_addr = __PREG(MCDR),
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.drcmr = &DRCMRRXMCDR,
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.dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC |
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DCMD_BURST16 | DCMD_WIDTH2,
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};
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#ifdef CONFIG_PM
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static int jz4740_ac97_suspend(struct platform_device *pdev,
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struct snd_soc_cpu_dai *dai)
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{
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return 0;
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}
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static int jz4740_ac97_resume(struct platform_device *pdev,
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struct snd_soc_cpu_dai *dai)
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{
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return 0;
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}
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#else
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#define jz4740_ac97_suspend NULL
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#define jz4740_ac97_resume NULL
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#endif
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static int jz4740_ac97_probe(struct platform_device *pdev)
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{
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int ret;
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return 0;
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}
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static void jz4740_ac97_remove(struct platform_device *pdev)
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{
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}
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static int jz4740_ac97_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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cpu_dai->dma_data = &jz4740_ac97_pcm_stereo_out;
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else
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cpu_dai->dma_data = &jz4740_ac97_pcm_stereo_in;
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return 0;
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}
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static int jz4740_ac97_hw_aux_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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cpu_dai->dma_data = &jz4740_ac97_pcm_aux_mono_out;
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else
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cpu_dai->dma_data = &jz4740_ac97_pcm_aux_mono_in;
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return 0;
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}
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static int jz4740_ac97_hw_mic_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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return -ENODEV;
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else
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cpu_dai->dma_data = &jz4740_ac97_pcm_mic_mono_in;
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return 0;
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}
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#define JZ4740_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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struct snd_soc_cpu_dai jz4740_ac97_dai[] = {
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{
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.name = "jz4740-ac97",
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.id = 0,
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.type = SND_SOC_DAI_AC97,
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.probe = jz4740_ac97_probe,
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.remove = jz4740_ac97_remove,
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.suspend = jz4740_ac97_suspend,
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.resume = jz4740_ac97_resume,
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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 = JZ4740_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 = JZ4740_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = {
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.hw_params = jz4740_ac97_hw_params,},
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},
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{
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.name = "jz4740-ac97-aux",
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.id = 1,
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.type = SND_SOC_DAI_AC97,
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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 = JZ4740_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 = JZ4740_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = {
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.hw_params = jz4740_ac97_hw_aux_params,},
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},
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{
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.name = "jz4740-ac97-mic",
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.id = 2,
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.type = SND_SOC_DAI_AC97,
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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 = JZ4740_AC97_RATES,
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.formats = SNDRV_PCM_FMTBIT_S16_LE,},
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.ops = {
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.hw_params = jz4740_ac97_hw_mic_params,},
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},
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};
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EXPORT_SYMBOL_GPL(jz4740_ac97_dai);
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EXPORT_SYMBOL_GPL(soc_ac97_ops);
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MODULE_AUTHOR("Richard");
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MODULE_DESCRIPTION("AC97 driver for the Ingenic jz4740 chip");
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MODULE_LICENSE("GPL");
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