wm8900.c (cf0dbba515415bb19b11f9323d5f7bebd7f24fd6) wm8900.c (b2c812e22de88bb79c290c0e718280f10b64a48d)
1/*
2 * wm8900.c -- WM8900 ALSA Soc Audio driver
3 *
4 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or modify

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19#include <linux/module.h>
20#include <linux/moduleparam.h>
21#include <linux/kernel.h>
22#include <linux/init.h>
23#include <linux/delay.h>
24#include <linux/pm.h>
25#include <linux/i2c.h>
26#include <linux/platform_device.h>
1/*
2 * wm8900.c -- WM8900 ALSA Soc Audio driver
3 *
4 * Copyright 2007, 2008 Wolfson Microelectronics PLC.
5 *
6 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
7 *
8 * This program is free software; you can redistribute it and/or modify

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19#include <linux/module.h>
20#include <linux/moduleparam.h>
21#include <linux/kernel.h>
22#include <linux/init.h>
23#include <linux/delay.h>
24#include <linux/pm.h>
25#include <linux/i2c.h>
26#include <linux/platform_device.h>
27#include <linux/slab.h>
28#include <sound/core.h>
29#include <sound/pcm.h>
30#include <sound/pcm_params.h>
31#include <sound/soc.h>
32#include <sound/soc-dapm.h>
33#include <sound/initval.h>
34#include <sound/tlv.h>
35

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740 BUG_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n);
741
742 return 0;
743}
744
745static int wm8900_set_fll(struct snd_soc_codec *codec,
746 int fll_id, unsigned int freq_in, unsigned int freq_out)
747{
27#include <sound/core.h>
28#include <sound/pcm.h>
29#include <sound/pcm_params.h>
30#include <sound/soc.h>
31#include <sound/soc-dapm.h>
32#include <sound/initval.h>
33#include <sound/tlv.h>
34

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739 BUG_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n);
740
741 return 0;
742}
743
744static int wm8900_set_fll(struct snd_soc_codec *codec,
745 int fll_id, unsigned int freq_in, unsigned int freq_out)
746{
748 struct wm8900_priv *wm8900 = codec->private_data;
747 struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
749 struct _fll_div fll_div;
750 unsigned int reg;
751
752 if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out)
753 return 0;
754
755 /* The digital side should be disabled during any change. */
756 reg = snd_soc_read(codec, WM8900_REG_POWER1);

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1127 codec->bias_level = level;
1128 return 0;
1129}
1130
1131static int wm8900_suspend(struct platform_device *pdev, pm_message_t state)
1132{
1133 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1134 struct snd_soc_codec *codec = socdev->card->codec;
748 struct _fll_div fll_div;
749 unsigned int reg;
750
751 if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out)
752 return 0;
753
754 /* The digital side should be disabled during any change. */
755 reg = snd_soc_read(codec, WM8900_REG_POWER1);

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1126 codec->bias_level = level;
1127 return 0;
1128}
1129
1130static int wm8900_suspend(struct platform_device *pdev, pm_message_t state)
1131{
1132 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1133 struct snd_soc_codec *codec = socdev->card->codec;
1135 struct wm8900_priv *wm8900 = codec->private_data;
1134 struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
1136 int fll_out = wm8900->fll_out;
1137 int fll_in = wm8900->fll_in;
1138 int ret;
1139
1140 /* Stop the FLL in an orderly fashion */
1141 ret = wm8900_set_fll(codec, 0, 0, 0);
1142 if (ret != 0) {
1143 dev_err(&pdev->dev, "Failed to stop FLL\n");

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1151
1152 return 0;
1153}
1154
1155static int wm8900_resume(struct platform_device *pdev)
1156{
1157 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1158 struct snd_soc_codec *codec = socdev->card->codec;
1135 int fll_out = wm8900->fll_out;
1136 int fll_in = wm8900->fll_in;
1137 int ret;
1138
1139 /* Stop the FLL in an orderly fashion */
1140 ret = wm8900_set_fll(codec, 0, 0, 0);
1141 if (ret != 0) {
1142 dev_err(&pdev->dev, "Failed to stop FLL\n");

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1150
1151 return 0;
1152}
1153
1154static int wm8900_resume(struct platform_device *pdev)
1155{
1156 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1157 struct snd_soc_codec *codec = socdev->card->codec;
1159 struct wm8900_priv *wm8900 = codec->private_data;
1158 struct wm8900_priv *wm8900 = snd_soc_codec_get_drvdata(codec);
1160 u16 *cache;
1161 int i, ret;
1162
1163 cache = kmemdup(codec->reg_cache, sizeof(wm8900_reg_defaults),
1164 GFP_KERNEL);
1165
1166 wm8900_reset(codec);
1167 wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

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1201 unsigned int reg;
1202 int ret;
1203
1204 wm8900 = kzalloc(sizeof(struct wm8900_priv), GFP_KERNEL);
1205 if (wm8900 == NULL)
1206 return -ENOMEM;
1207
1208 codec = &wm8900->codec;
1159 u16 *cache;
1160 int i, ret;
1161
1162 cache = kmemdup(codec->reg_cache, sizeof(wm8900_reg_defaults),
1163 GFP_KERNEL);
1164
1165 wm8900_reset(codec);
1166 wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);

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1200 unsigned int reg;
1201 int ret;
1202
1203 wm8900 = kzalloc(sizeof(struct wm8900_priv), GFP_KERNEL);
1204 if (wm8900 == NULL)
1205 return -ENOMEM;
1206
1207 codec = &wm8900->codec;
1209 codec->private_data = wm8900;
1208 snd_soc_codec_set_drvdata(codec, wm8900);
1210 codec->reg_cache = &wm8900->reg_cache[0];
1211 codec->reg_cache_size = WM8900_MAXREG;
1212
1213 mutex_init(&codec->mutex);
1214 INIT_LIST_HEAD(&codec->dapm_widgets);
1215 INIT_LIST_HEAD(&codec->dapm_paths);
1216
1217 codec->name = "WM8900";

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1300static __devexit int wm8900_i2c_remove(struct i2c_client *client)
1301{
1302 snd_soc_unregister_dai(&wm8900_dai);
1303 snd_soc_unregister_codec(wm8900_codec);
1304
1305 wm8900_set_bias_level(wm8900_codec, SND_SOC_BIAS_OFF);
1306
1307 wm8900_dai.dev = NULL;
1209 codec->reg_cache = &wm8900->reg_cache[0];
1210 codec->reg_cache_size = WM8900_MAXREG;
1211
1212 mutex_init(&codec->mutex);
1213 INIT_LIST_HEAD(&codec->dapm_widgets);
1214 INIT_LIST_HEAD(&codec->dapm_paths);
1215
1216 codec->name = "WM8900";

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1299static __devexit int wm8900_i2c_remove(struct i2c_client *client)
1300{
1301 snd_soc_unregister_dai(&wm8900_dai);
1302 snd_soc_unregister_codec(wm8900_codec);
1303
1304 wm8900_set_bias_level(wm8900_codec, SND_SOC_BIAS_OFF);
1305
1306 wm8900_dai.dev = NULL;
1308 kfree(wm8900_codec->private_data);
1307 kfree(snd_soc_codec_get_drvdata(wm8900_codec));
1309 wm8900_codec = NULL;
1310
1311 return 0;
1312}
1313
1314static const struct i2c_device_id wm8900_i2c_id[] = {
1315 { "wm8900", 0 },
1316 { }

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1309
1310 return 0;
1311}
1312
1313static const struct i2c_device_id wm8900_i2c_id[] = {
1314 { "wm8900", 0 },
1315 { }

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