dee89c4d94
Liam Girdwood's ASoC v2 work avoids having two different ops structures for DAIs by merging the members of struct snd_soc_ops into struct snd_soc_dai_ops, allowing per DAI configuration for everything. Backport this change. This paves the way for future work allowing any combination of DAIs to be connected rather than having fixed purpose CODEC and CPU DAIs and only allowing CODEC<->CPU interconnections. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*
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* ASoC driver for Lyrtech SFFSDR board.
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*
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* Author: Hugo Villeneuve
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* Copyright (C) 2008 Lyrtech inc
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*
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* Based on ASoC driver for TI DAVINCI EVM platform, original copyright follow:
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* Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.com>
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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/module.h>
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#include <linux/moduleparam.h>
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#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc.h>
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#include <sound/soc-dapm.h>
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#include <asm/dma.h>
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#include <asm/plat-sffsdr/sffsdr-fpga.h>
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#include <mach/mcbsp.h>
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#include <mach/edma.h>
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#include "../codecs/pcm3008.h"
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#include "davinci-pcm.h"
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#include "davinci-i2s.h"
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static int sffsdr_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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int fs;
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int ret = 0;
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/* Set cpu DAI configuration:
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* CLKX and CLKR are the inputs for the Sample Rate Generator.
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* FSX and FSR are outputs, driven by the sample Rate Generator. */
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ret = snd_soc_dai_set_fmt(cpu_dai,
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SND_SOC_DAIFMT_RIGHT_J |
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SND_SOC_DAIFMT_CBM_CFS |
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SND_SOC_DAIFMT_IB_NF);
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if (ret < 0)
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return ret;
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/* Fsref can be 32000, 44100 or 48000. */
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fs = params_rate(params);
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pr_debug("sffsdr_hw_params: rate = %d Hz\n", fs);
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return sffsdr_fpga_set_codec_fs(fs);
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}
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static struct snd_soc_ops sffsdr_ops = {
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.hw_params = sffsdr_hw_params,
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};
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/* davinci-sffsdr digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link sffsdr_dai = {
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.name = "PCM3008", /* Codec name */
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.stream_name = "PCM3008 HiFi",
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.cpu_dai = &davinci_i2s_dai,
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.codec_dai = &pcm3008_dai,
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.ops = &sffsdr_ops,
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};
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/* davinci-sffsdr audio machine driver */
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static struct snd_soc_card snd_soc_sffsdr = {
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.name = "DaVinci SFFSDR",
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.dai_link = &sffsdr_dai,
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.num_links = 1,
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};
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/* sffsdr audio private data */
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static struct pcm3008_setup_data sffsdr_pcm3008_setup = {
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.dem0_pin = GPIO(45),
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.dem1_pin = GPIO(46),
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.pdad_pin = GPIO(47),
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.pdda_pin = GPIO(38),
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};
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/* sffsdr audio subsystem */
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static struct snd_soc_device sffsdr_snd_devdata = {
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.card = &snd_soc_sffsdr,
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.platform = &davinci_soc_platform,
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.codec_dev = &soc_codec_dev_pcm3008,
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.codec_data = &sffsdr_pcm3008_setup,
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};
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static struct resource sffsdr_snd_resources[] = {
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{
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.start = DAVINCI_MCBSP_BASE,
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.end = DAVINCI_MCBSP_BASE + SZ_8K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct evm_snd_platform_data sffsdr_snd_data = {
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.tx_dma_ch = DAVINCI_DMA_MCBSP_TX,
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.rx_dma_ch = DAVINCI_DMA_MCBSP_RX,
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};
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static struct platform_device *sffsdr_snd_device;
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static int __init sffsdr_init(void)
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{
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int ret;
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sffsdr_snd_device = platform_device_alloc("soc-audio", 0);
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if (!sffsdr_snd_device) {
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printk(KERN_ERR "platform device allocation failed\n");
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return -ENOMEM;
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}
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platform_set_drvdata(sffsdr_snd_device, &sffsdr_snd_devdata);
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sffsdr_snd_devdata.dev = &sffsdr_snd_device->dev;
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sffsdr_snd_device->dev.platform_data = &sffsdr_snd_data;
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ret = platform_device_add_resources(sffsdr_snd_device,
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sffsdr_snd_resources,
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ARRAY_SIZE(sffsdr_snd_resources));
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if (ret) {
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printk(KERN_ERR "platform device add ressources failed\n");
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goto error;
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}
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ret = platform_device_add(sffsdr_snd_device);
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if (ret)
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goto error;
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return ret;
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error:
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platform_device_put(sffsdr_snd_device);
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return ret;
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}
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static void __exit sffsdr_exit(void)
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{
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platform_device_unregister(sffsdr_snd_device);
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}
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module_init(sffsdr_init);
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module_exit(sffsdr_exit);
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MODULE_AUTHOR("Hugo Villeneuve");
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MODULE_DESCRIPTION("Lyrtech SFFSDR ASoC driver");
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MODULE_LICENSE("GPL");
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