diff options
Diffstat (limited to 'sound/soc/codecs/wm8900.c')
| -rw-r--r-- | sound/soc/codecs/wm8900.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/sound/soc/codecs/wm8900.c b/sound/soc/codecs/wm8900.c index 3c78945244b..ac308993ac5 100644 --- a/sound/soc/codecs/wm8900.c +++ b/sound/soc/codecs/wm8900.c @@ -116,6 +116,7 @@ #define WM8900_REG_CLOCKING2_DAC_CLKDIV 0x1c #define WM8900_REG_DACCTRL_MUTE 0x004 +#define WM8900_REG_DACCTRL_DAC_SB_FILT 0x100 #define WM8900_REG_DACCTRL_AIF_LRCLKRATE 0x400 #define WM8900_REG_AUDIO3_ADCLRC_DIR 0x0800 @@ -439,7 +440,6 @@ SOC_SINGLE("DAC Soft Mute Switch", WM8900_REG_DACCTRL, 6, 1, 1), SOC_ENUM("DAC Mute Rate", dac_mute_rate), SOC_SINGLE("DAC Mono Switch", WM8900_REG_DACCTRL, 9, 1, 0), SOC_ENUM("DAC Deemphasis", dac_deemphasis), -SOC_SINGLE("DAC Sloping Stopband Filter Switch", WM8900_REG_DACCTRL, 8, 1, 0), SOC_SINGLE("DAC Sigma-Delta Modulator Clock Switch", WM8900_REG_DACCTRL, 12, 1, 0), @@ -743,6 +743,17 @@ static int wm8900_hw_params(struct snd_pcm_substream *substream, wm8900_write(codec, WM8900_REG_AUDIO1, reg); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + reg = wm8900_read(codec, WM8900_REG_DACCTRL); + + if (params_rate(params) <= 24000) + reg |= WM8900_REG_DACCTRL_DAC_SB_FILT; + else + reg &= ~WM8900_REG_DACCTRL_DAC_SB_FILT; + + wm8900_write(codec, WM8900_REG_DACCTRL, reg); + } + return 0; } @@ -1388,6 +1399,21 @@ static __devexit int wm8900_i2c_remove(struct i2c_client *client) return 0; } +#ifdef CONFIG_PM +static int wm8900_i2c_suspend(struct i2c_client *client, pm_message_t msg) +{ + return snd_soc_suspend_device(&client->dev); +} + +static int wm8900_i2c_resume(struct i2c_client *client) +{ + return snd_soc_resume_device(&client->dev); +} +#else +#define wm8900_i2c_suspend NULL +#define wm8900_i2c_resume NULL +#endif + static const struct i2c_device_id wm8900_i2c_id[] = { { "wm8900", 0 }, { } @@ -1401,6 +1427,8 @@ static struct i2c_driver wm8900_i2c_driver = { }, .probe = wm8900_i2c_probe, .remove = __devexit_p(wm8900_i2c_remove), + .suspend = wm8900_i2c_suspend, + .resume = wm8900_i2c_resume, .id_table = wm8900_i2c_id, }; |