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85e7652d89
Commit 1ee46ebd("ASoC: Make the DAI ops constant in the DAI structure")
introduced the possibility to have constant DAI ops structures, yet this is
barley used in both existing drivers and also new drivers being submitted,
although none of them modifies its DAI ops structure. The later is not
surprising since existing drivers are often used as templates for new drivers.
So this patch just constifies all existing snd_soc_dai_ops structs to eliminate
the issue altogether.
The patch was generated with the following coccinelle semantic patch:
// <smpl>
@@
identifier ops;
@@
-struct snd_soc_dai_ops ops =
+const struct snd_soc_dai_ops ops =
{ ... };
// </smpl>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
167 lines
3.8 KiB
C
167 lines
3.8 KiB
C
/*
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* ac97.c -- ALSA Soc AC97 codec support
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*
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* Copyright 2005 Wolfson Microelectronics PLC.
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* Author: Liam Girdwood <lrg@slimlogic.co.uk>
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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; either version 2 of the License, or (at your
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* option) any later version.
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*
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* Generic AC97 support.
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/kernel.h>
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#include <linux/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/ac97_codec.h>
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#include <sound/initval.h>
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#include <sound/soc.h>
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static int ac97_prepare(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_codec *codec = rtd->codec;
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int reg = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ?
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AC97_PCM_FRONT_DAC_RATE : AC97_PCM_LR_ADC_RATE;
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return snd_ac97_set_rate(codec->ac97, reg, runtime->rate);
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}
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#define STD_AC97_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
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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 ac97_dai_ops = {
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.prepare = ac97_prepare,
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};
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static struct snd_soc_dai_driver ac97_dai = {
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.name = "ac97-hifi",
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.ac97_control = 1,
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.playback = {
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.stream_name = "AC97 Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = STD_AC97_RATES,
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.formats = SND_SOC_STD_AC97_FMTS,},
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.capture = {
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.stream_name = "AC97 Capture",
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.channels_min = 1,
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.channels_max = 2,
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.rates = STD_AC97_RATES,
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.formats = SND_SOC_STD_AC97_FMTS,},
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.ops = &ac97_dai_ops,
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};
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static unsigned int ac97_read(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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return soc_ac97_ops.read(codec->ac97, reg);
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}
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static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int val)
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{
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soc_ac97_ops.write(codec->ac97, reg, val);
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return 0;
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}
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static int ac97_soc_probe(struct snd_soc_codec *codec)
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{
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struct snd_ac97_bus *ac97_bus;
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struct snd_ac97_template ac97_template;
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int ret;
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/* add codec as bus device for standard ac97 */
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ret = snd_ac97_bus(codec->card->snd_card, 0, &soc_ac97_ops, NULL, &ac97_bus);
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if (ret < 0)
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return ret;
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memset(&ac97_template, 0, sizeof(struct snd_ac97_template));
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ret = snd_ac97_mixer(ac97_bus, &ac97_template, &codec->ac97);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int ac97_soc_remove(struct snd_soc_codec *codec)
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{
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return 0;
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}
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#ifdef CONFIG_PM
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static int ac97_soc_suspend(struct snd_soc_codec *codec, pm_message_t msg)
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{
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snd_ac97_suspend(codec->ac97);
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return 0;
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}
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static int ac97_soc_resume(struct snd_soc_codec *codec)
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{
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snd_ac97_resume(codec->ac97);
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return 0;
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}
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#else
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#define ac97_soc_suspend NULL
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#define ac97_soc_resume NULL
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#endif
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static struct snd_soc_codec_driver soc_codec_dev_ac97 = {
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.write = ac97_write,
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.read = ac97_read,
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.probe = ac97_soc_probe,
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.remove = ac97_soc_remove,
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.suspend = ac97_soc_suspend,
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.resume = ac97_soc_resume,
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};
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static __devinit int ac97_probe(struct platform_device *pdev)
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{
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return snd_soc_register_codec(&pdev->dev,
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&soc_codec_dev_ac97, &ac97_dai, 1);
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}
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static int __devexit ac97_remove(struct platform_device *pdev)
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{
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snd_soc_unregister_codec(&pdev->dev);
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return 0;
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}
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static struct platform_driver ac97_codec_driver = {
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.driver = {
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.name = "ac97-codec",
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.owner = THIS_MODULE,
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},
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.probe = ac97_probe,
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.remove = __devexit_p(ac97_remove),
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};
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static int __init ac97_init(void)
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{
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return platform_driver_register(&ac97_codec_driver);
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}
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module_init(ac97_init);
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static void __exit ac97_exit(void)
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{
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platform_driver_unregister(&ac97_codec_driver);
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}
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module_exit(ac97_exit);
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MODULE_DESCRIPTION("Soc Generic AC97 driver");
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MODULE_AUTHOR("Liam Girdwood");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:ac97-codec");
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