diff options
| -rw-r--r-- | sound/soc/codecs/twl4030.c | 17 | ||||
| -rw-r--r-- | sound/soc/codecs/twl4030.h | 1 |
2 files changed, 18 insertions, 0 deletions
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c index 45de2aad283c..b292c2d8f2a3 100644 --- a/sound/soc/codecs/twl4030.c +++ b/sound/soc/codecs/twl4030.c @@ -262,6 +262,17 @@ static inline void twl4030_check_defaults(struct snd_soc_codec *codec) difference, difference ? "Not OK" : "OK"); } +static inline void twl4030_reset_registers(struct snd_soc_codec *codec) +{ + int i; + + /* set all audio section registers to reasonable defaults */ + for (i = TWL4030_REG_OPTION; i <= TWL4030_REG_MISC_SET_2; i++) + if (i != TWL4030_REG_APLL_CTL) + twl4030_write(codec, i, twl4030_reg[i]); + +} + static void twl4030_init_chip(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); @@ -275,6 +286,10 @@ static void twl4030_init_chip(struct platform_device *pdev) if (setup && setup->check_defaults) twl4030_check_defaults(codec); + /* Reset registers, if no setup data or if instructed to do so */ + if (!setup || (setup && setup->reset_registers)) + twl4030_reset_registers(codec); + /* Refresh APLL_CTL register from HW */ twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte, TWL4030_REG_APLL_CTL); @@ -2271,6 +2286,8 @@ static int twl4030_soc_remove(struct platform_device *pdev) struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec = socdev->card->codec; + /* Reset registers to their chip default before leaving */ + twl4030_reset_registers(codec); twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF); snd_soc_free_pcms(socdev); snd_soc_dapm_free(socdev); diff --git a/sound/soc/codecs/twl4030.h b/sound/soc/codecs/twl4030.h index c22542c2690c..788e3d125099 100644 --- a/sound/soc/codecs/twl4030.h +++ b/sound/soc/codecs/twl4030.h @@ -44,6 +44,7 @@ struct twl4030_setup_data { unsigned int sysclk; unsigned int offset_cncl_path; unsigned int check_defaults:1; + unsigned int reset_registers:1; unsigned int hs_extmute:1; void (*set_hs_extmute)(int mute); }; |