Signed-off-by: Daniel Mack daniel@caiaq.de Cc: Mark Brown broonie@opensource.wolfsonmicro.com Cc: Timur Tabi timur@freescale.com Cc: Liam Girdwood lrg@slimlogic.co.uk --- sound/soc/codecs/cs4270.c | 43 ++++++++++++++++++++++++++++++++++++++++--- 1 files changed, 40 insertions(+), 3 deletions(-)
diff --git a/sound/soc/codecs/cs4270.c b/sound/soc/codecs/cs4270.c index ffe122d..8b54575 100644 --- a/sound/soc/codecs/cs4270.c +++ b/sound/soc/codecs/cs4270.c @@ -28,6 +28,7 @@ #include <sound/initval.h> #include <linux/i2c.h> #include <linux/delay.h> +#include <linux/regulator/consumer.h>
#include "cs4270.h"
@@ -106,6 +107,10 @@ #define CS4270_MUTE_DAC_A 0x01 #define CS4270_MUTE_DAC_B 0x02
+static const char *supply_names[] = { + "va", "vd", "vlc" +}; + /* Private data for the CS4270 */ struct cs4270_private { struct snd_soc_codec codec; @@ -114,6 +119,9 @@ struct cs4270_private { unsigned int mode; /* The mode (I2S or left-justified) */ unsigned int slave_mode; unsigned int manual_mute; + + /* power domain regulators */ + struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; };
/** @@ -579,7 +587,8 @@ static int cs4270_probe(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec = cs4270_codec; - int ret; + struct cs4270_private *cs4270 = codec->private_data; + int i, ret;
/* Connect the codec to the socdev. snd_soc_new_pcms() needs this. */ socdev->card->codec = codec; @@ -599,6 +608,15 @@ static int cs4270_probe(struct platform_device *pdev) goto error_free_pcms; }
+ /* get the power supply regulators */ + for (i = 0; i < ARRAY_SIZE(supply_names); i++) + cs4270->supplies[i].supply = supply_names[i]; + + ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(cs4270->supplies), + cs4270->supplies); + if (ret < 0) + goto error_free_pcms; + return 0;
error_free_pcms: @@ -616,8 +634,11 @@ error_free_pcms: static int cs4270_remove(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = cs4270_codec; + struct cs4270_private *cs4270 = codec->private_data;
snd_soc_free_pcms(socdev); + regulator_bulk_free(ARRAY_SIZE(cs4270->supplies), cs4270->supplies);
return 0; }; @@ -799,17 +820,33 @@ MODULE_DEVICE_TABLE(i2c, cs4270_id); static int cs4270_soc_suspend(struct platform_device *pdev, pm_message_t mesg) { struct snd_soc_codec *codec = cs4270_codec; - int reg = snd_soc_read(codec, CS4270_PWRCTL) | CS4270_PWRCTL_PDN_ALL; + struct cs4270_private *cs4270 = codec->private_data; + int reg, ret;
- return snd_soc_write(codec, CS4270_PWRCTL, reg); + reg = snd_soc_read(codec, CS4270_PWRCTL) | CS4270_PWRCTL_PDN_ALL; + if (reg < 0) + return reg; + + ret = snd_soc_write(codec, CS4270_PWRCTL, reg); + if (ret < 0) + return ret; + + regulator_bulk_disable(ARRAY_SIZE(cs4270->supplies), + cs4270->supplies); + + return 0; }
static int cs4270_soc_resume(struct platform_device *pdev) { struct snd_soc_codec *codec = cs4270_codec; + struct cs4270_private *cs4270 = codec->private_data; struct i2c_client *i2c_client = codec->control_data; int reg;
+ regulator_bulk_enable(ARRAY_SIZE(cs4270->supplies), + cs4270->supplies); + /* In case the device was put to hard reset during sleep, we need to * wait 500ns here before any I2C communication. */ ndelay(500);