wm8971.c (cf0dbba515415bb19b11f9323d5f7bebd7f24fd6) wm8971.c (b2c812e22de88bb79c290c0e718280f10b64a48d)
1/*
2 * wm8971.c -- WM8971 ALSA SoC Audio driver
3 *
4 * Copyright 2005 Lab126, Inc.
5 *
6 * Author: Kenneth Kiraly <kiraly@lab126.com>
7 *
8 * Based on wm8753.c by Liam Girdwood

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15
16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/init.h>
19#include <linux/delay.h>
20#include <linux/pm.h>
21#include <linux/i2c.h>
22#include <linux/platform_device.h>
1/*
2 * wm8971.c -- WM8971 ALSA SoC Audio driver
3 *
4 * Copyright 2005 Lab126, Inc.
5 *
6 * Author: Kenneth Kiraly <kiraly@lab126.com>
7 *
8 * Based on wm8753.c by Liam Girdwood

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15
16#include <linux/module.h>
17#include <linux/moduleparam.h>
18#include <linux/init.h>
19#include <linux/delay.h>
20#include <linux/pm.h>
21#include <linux/i2c.h>
22#include <linux/platform_device.h>
23#include <linux/slab.h>
24#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
28#include <sound/soc-dapm.h>
29#include <sound/initval.h>
30
31#include "wm8971.h"

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410 }
411 return -EINVAL;
412}
413
414static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
415 int clk_id, unsigned int freq, int dir)
416{
417 struct snd_soc_codec *codec = codec_dai->codec;
23#include <sound/core.h>
24#include <sound/pcm.h>
25#include <sound/pcm_params.h>
26#include <sound/soc.h>
27#include <sound/soc-dapm.h>
28#include <sound/initval.h>
29
30#include "wm8971.h"

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409 }
410 return -EINVAL;
411}
412
413static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
414 int clk_id, unsigned int freq, int dir)
415{
416 struct snd_soc_codec *codec = codec_dai->codec;
418 struct wm8971_priv *wm8971 = codec->private_data;
417 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
419
420 switch (freq) {
421 case 11289600:
422 case 12000000:
423 case 12288000:
424 case 16934400:
425 case 18432000:
426 wm8971->sysclk = freq;

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489
490static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
491 struct snd_pcm_hw_params *params,
492 struct snd_soc_dai *dai)
493{
494 struct snd_soc_pcm_runtime *rtd = substream->private_data;
495 struct snd_soc_device *socdev = rtd->socdev;
496 struct snd_soc_codec *codec = socdev->card->codec;
418
419 switch (freq) {
420 case 11289600:
421 case 12000000:
422 case 12288000:
423 case 16934400:
424 case 18432000:
425 wm8971->sysclk = freq;

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488
489static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
490 struct snd_pcm_hw_params *params,
491 struct snd_soc_dai *dai)
492{
493 struct snd_soc_pcm_runtime *rtd = substream->private_data;
494 struct snd_soc_device *socdev = rtd->socdev;
495 struct snd_soc_codec *codec = socdev->card->codec;
497 struct wm8971_priv *wm8971 = codec->private_data;
496 struct wm8971_priv *wm8971 = snd_soc_codec_get_drvdata(codec);
498 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
499 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
500 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
501
502 /* bit size */
503 switch (params_format(params)) {
504 case SNDRV_PCM_FORMAT_S16_LE:
505 break;

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815 return -ENOMEM;
816
817 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
818 if (wm8971 == NULL) {
819 kfree(codec);
820 return -ENOMEM;
821 }
822
497 u16 iface = snd_soc_read(codec, WM8971_IFACE) & 0x1f3;
498 u16 srate = snd_soc_read(codec, WM8971_SRATE) & 0x1c0;
499 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
500
501 /* bit size */
502 switch (params_format(params)) {
503 case SNDRV_PCM_FORMAT_S16_LE:
504 break;

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814 return -ENOMEM;
815
816 wm8971 = kzalloc(sizeof(struct wm8971_priv), GFP_KERNEL);
817 if (wm8971 == NULL) {
818 kfree(codec);
819 return -ENOMEM;
820 }
821
823 codec->private_data = wm8971;
822 snd_soc_codec_set_drvdata(codec, wm8971);
824 socdev->card->codec = codec;
825 mutex_init(&codec->mutex);
826 INIT_LIST_HEAD(&codec->dapm_widgets);
827 INIT_LIST_HEAD(&codec->dapm_paths);
828 wm8971_socdev = socdev;
829
830 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
831 wm8971_workq = create_workqueue("wm8971");
832 if (wm8971_workq == NULL) {
823 socdev->card->codec = codec;
824 mutex_init(&codec->mutex);
825 INIT_LIST_HEAD(&codec->dapm_widgets);
826 INIT_LIST_HEAD(&codec->dapm_paths);
827 wm8971_socdev = socdev;
828
829 INIT_DELAYED_WORK(&codec->delayed_work, wm8971_work);
830 wm8971_workq = create_workqueue("wm8971");
831 if (wm8971_workq == NULL) {
833 kfree(codec->private_data);
832 kfree(snd_soc_codec_get_drvdata(codec));
834 kfree(codec);
835 return -ENOMEM;
836 }
837
838#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
839 if (setup->i2c_address) {
840 ret = wm8971_add_i2c_device(pdev, setup);
841 }
842#endif
843 /* Add other interfaces here */
844
845 if (ret != 0) {
846 destroy_workqueue(wm8971_workq);
833 kfree(codec);
834 return -ENOMEM;
835 }
836
837#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
838 if (setup->i2c_address) {
839 ret = wm8971_add_i2c_device(pdev, setup);
840 }
841#endif
842 /* Add other interfaces here */
843
844 if (ret != 0) {
845 destroy_workqueue(wm8971_workq);
847 kfree(codec->private_data);
846 kfree(snd_soc_codec_get_drvdata(codec));
848 kfree(codec);
849 }
850
851 return ret;
852}
853
854/* power down chip */
855static int wm8971_remove(struct platform_device *pdev)

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862 if (wm8971_workq)
863 destroy_workqueue(wm8971_workq);
864 snd_soc_free_pcms(socdev);
865 snd_soc_dapm_free(socdev);
866#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
867 i2c_unregister_device(codec->control_data);
868 i2c_del_driver(&wm8971_i2c_driver);
869#endif
847 kfree(codec);
848 }
849
850 return ret;
851}
852
853/* power down chip */
854static int wm8971_remove(struct platform_device *pdev)

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861 if (wm8971_workq)
862 destroy_workqueue(wm8971_workq);
863 snd_soc_free_pcms(socdev);
864 snd_soc_dapm_free(socdev);
865#if defined (CONFIG_I2C) || defined (CONFIG_I2C_MODULE)
866 i2c_unregister_device(codec->control_data);
867 i2c_del_driver(&wm8971_i2c_driver);
868#endif
870 kfree(codec->private_data);
869 kfree(snd_soc_codec_get_drvdata(codec));
871 kfree(codec);
872
873 return 0;
874}
875
876struct snd_soc_codec_device soc_codec_dev_wm8971 = {
877 .probe = wm8971_probe,
878 .remove = wm8971_remove,

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871
872 return 0;
873}
874
875struct snd_soc_codec_device soc_codec_dev_wm8971 = {
876 .probe = wm8971_probe,
877 .remove = wm8971_remove,

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