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https://github.com/torvalds/linux
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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>
152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
/*
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* omap2evm.c -- SoC audio machine driver for omap2evm board
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*
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* Author: Arun KS <arunks@mistralsolutions.com>
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*
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* Based on sound/soc/omap/overo.c by Steve Sakoman
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/clk.h>
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#include <linux/platform_device.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/mach-types.h>
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#include <mach/hardware.h>
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#include <mach/gpio.h>
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#include <mach/mcbsp.h>
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#include "omap-mcbsp.h"
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#include "omap-pcm.h"
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#include "../codecs/twl4030.h"
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static int omap2evm_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 *codec_dai = rtd->dai->codec_dai;
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struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
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int ret;
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/* Set codec DAI configuration */
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ret = snd_soc_dai_set_fmt(codec_dai,
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SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0) {
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printk(KERN_ERR "can't set codec DAI configuration\n");
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return ret;
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}
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/* Set cpu DAI configuration */
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ret = snd_soc_dai_set_fmt(cpu_dai,
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SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM);
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if (ret < 0) {
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printk(KERN_ERR "can't set cpu DAI configuration\n");
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return ret;
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}
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/* Set the codec system clock for DAC and ADC */
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ret = snd_soc_dai_set_sysclk(codec_dai, 0, 26000000,
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SND_SOC_CLOCK_IN);
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if (ret < 0) {
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printk(KERN_ERR "can't set codec system clock\n");
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return ret;
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}
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return 0;
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}
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static struct snd_soc_ops omap2evm_ops = {
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.hw_params = omap2evm_hw_params,
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};
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/* Digital audio interface glue - connects codec <--> CPU */
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static struct snd_soc_dai_link omap2evm_dai = {
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.name = "TWL4030",
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.stream_name = "TWL4030",
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.cpu_dai = &omap_mcbsp_dai[0],
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.codec_dai = &twl4030_dai,
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.ops = &omap2evm_ops,
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};
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/* Audio machine driver */
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static struct snd_soc_card snd_soc_omap2evm = {
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.name = "omap2evm",
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.dai_link = &omap2evm_dai,
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.num_links = 1,
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};
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/* Audio subsystem */
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static struct snd_soc_device omap2evm_snd_devdata = {
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.card = &snd_soc_omap2evm,
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.platform = &omap_soc_platform,
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.codec_dev = &soc_codec_dev_twl4030,
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};
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static struct platform_device *omap2evm_snd_device;
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static int __init omap2evm_soc_init(void)
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{
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int ret;
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if (!machine_is_omap2evm()) {
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pr_debug("Not omap2evm!\n");
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return -ENODEV;
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}
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printk(KERN_INFO "omap2evm SoC init\n");
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omap2evm_snd_device = platform_device_alloc("soc-audio", -1);
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if (!omap2evm_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(omap2evm_snd_device, &omap2evm_snd_devdata);
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omap2evm_snd_devdata.dev = &omap2evm_snd_device->dev;
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*(unsigned int *)omap2evm_dai.cpu_dai->private_data = 1; /* McBSP2 */
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ret = platform_device_add(omap2evm_snd_device);
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if (ret)
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goto err1;
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return 0;
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err1:
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printk(KERN_ERR "Unable to add platform device\n");
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platform_device_put(omap2evm_snd_device);
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return ret;
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}
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module_init(omap2evm_soc_init);
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static void __exit omap2evm_soc_exit(void)
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{
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platform_device_unregister(omap2evm_snd_device);
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}
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module_exit(omap2evm_soc_exit);
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MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
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MODULE_DESCRIPTION("ALSA SoC omap2evm");
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MODULE_LICENSE("GPL");
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