forked from luck/tmp_suning_uos_patched
45656b44f6
The OMAP McBSP driver stack used to contain two different drivers. One of them was used as kind low-level access to the IP, while the other driver was the ASoC DAI driver. There were global, shared structures, in different places, the McBSP instances are reffered with id numbers (sometimes 0 based, in other cases 1 based id numbers). Create one single driver for OMAP McBSP with name: omap-mcbsp. Convert the old omap-mcbsp driver initially to be a library for the omap-mcbsp DAI driver. With this change we can get rid of all global variables, structures. Further cleanup is coming... Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by: Grazvydas Ignotas <notasas@gmail.com> Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com> Signed-off-by: Liam Girdwood <lrg@ti.com>
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/*
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* omap3evm.c -- ALSA SoC support for OMAP3 EVM
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*
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* Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
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*
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* Based on sound/soc/omap/beagle.c by Steve Sakoman
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*
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* Copyright (C) 2008 Texas Instruments, Incorporated
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
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* whether express or implied; 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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#include <linux/clk.h>
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#include <linux/platform_device.h>
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#include <linux/module.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 <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 <plat/mcbsp.h>
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#include "omap-mcbsp.h"
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#include "omap-pcm.h"
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static int omap3evm_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_dai *codec_dai = rtd->codec_dai;
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int ret;
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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 omap3evm_ops = {
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.hw_params = omap3evm_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 omap3evm_dai = {
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.name = "TWL4030",
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.stream_name = "TWL4030",
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.cpu_dai_name = "omap-mcbsp.2",
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.codec_dai_name = "twl4030-hifi",
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.platform_name = "omap-pcm-audio",
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.codec_name = "twl4030-codec",
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.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBM_CFM,
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.ops = &omap3evm_ops,
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};
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/* Audio machine driver */
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static struct snd_soc_card snd_soc_omap3evm = {
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.name = "omap3evm",
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.owner = THIS_MODULE,
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.dai_link = &omap3evm_dai,
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.num_links = 1,
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};
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static struct platform_device *omap3evm_snd_device;
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static int __init omap3evm_soc_init(void)
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{
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int ret;
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if (!machine_is_omap3evm())
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return -ENODEV;
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pr_info("OMAP3 EVM SoC init\n");
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omap3evm_snd_device = platform_device_alloc("soc-audio", -1);
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if (!omap3evm_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(omap3evm_snd_device, &snd_soc_omap3evm);
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ret = platform_device_add(omap3evm_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(omap3evm_snd_device);
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return ret;
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}
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static void __exit omap3evm_soc_exit(void)
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{
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platform_device_unregister(omap3evm_snd_device);
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}
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module_init(omap3evm_soc_init);
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module_exit(omap3evm_soc_exit);
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MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
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MODULE_DESCRIPTION("ALSA SoC OMAP3 EVM");
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MODULE_LICENSE("GPL v2");
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