diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/da7219.c | 30 | ||||
| -rw-r--r-- | sound/soc/codecs/da7219.h | 5 |
2 files changed, 32 insertions, 3 deletions
diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c index 9d08c11..eecb6d6 100644 --- a/sound/soc/codecs/da7219.c +++ b/sound/soc/codecs/da7219.c @@ -1925,7 +1925,8 @@ static int da7219_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct da7219_priv *da7219; - int ret; + unsigned int system_active, system_status; + int i, ret; da7219 = devm_kzalloc(&i2c->dev, sizeof(struct da7219_priv), GFP_KERNEL); @@ -1941,14 +1942,37 @@ static int da7219_i2c_probe(struct i2c_client *i2c, return ret; } - /* Software reset codec. */ + regcache_cache_bypass(da7219->regmap, true); + + /* Disable audio paths if still active from previous start */ + regmap_read(da7219->regmap, DA7219_SYSTEM_ACTIVE, &system_active); + if (system_active) { + regmap_write(da7219->regmap, DA7219_GAIN_RAMP_CTRL, + DA7219_GAIN_RAMP_RATE_NOMINAL); + regmap_write(da7219->regmap, DA7219_SYSTEM_MODES_INPUT, 0x00); + regmap_write(da7219->regmap, DA7219_SYSTEM_MODES_OUTPUT, 0x01); + + for (i = 0; i < DA7219_SYS_STAT_CHECK_RETRIES; ++i) { + regmap_read(da7219->regmap, DA7219_SYSTEM_STATUS, + &system_status); + if (!system_status) + break; + + msleep(DA7219_SYS_STAT_CHECK_DELAY); + } + } + + /* Soft reset codec */ regmap_write_bits(da7219->regmap, DA7219_ACCDET_CONFIG_1, DA7219_ACCDET_EN_MASK, 0); regmap_write_bits(da7219->regmap, DA7219_CIF_CTRL, - DA7219_CIF_REG_SOFT_RESET_MASK, 0); + DA7219_CIF_REG_SOFT_RESET_MASK, + DA7219_CIF_REG_SOFT_RESET_MASK); regmap_write_bits(da7219->regmap, DA7219_SYSTEM_ACTIVE, DA7219_SYSTEM_ACTIVE_MASK, 0); + regcache_cache_bypass(da7219->regmap, false); + ret = snd_soc_register_codec(&i2c->dev, &soc_codec_dev_da7219, &da7219_dai, 1); if (ret < 0) { diff --git a/sound/soc/codecs/da7219.h b/sound/soc/codecs/da7219.h index 545576d..f1b3ad8 100644 --- a/sound/soc/codecs/da7219.h +++ b/sound/soc/codecs/da7219.h @@ -578,6 +578,7 @@ #define DA7219_GAIN_RAMP_RATE_SHIFT 0 #define DA7219_GAIN_RAMP_RATE_MASK (0x3 << 0) #define DA7219_GAIN_RAMP_RATE_X8 (0x0 << 0) +#define DA7219_GAIN_RAMP_RATE_NOMINAL (0x1 << 0) #define DA7219_GAIN_RAMP_RATE_MAX 4 /* DA7219_PC_COUNT = 0x94 */ @@ -772,6 +773,10 @@ /* SRM */ #define DA7219_SRM_CHECK_RETRIES 8 +/* System Controller */ +#define DA7219_SYS_STAT_CHECK_RETRIES 6 +#define DA7219_SYS_STAT_CHECK_DELAY 50 + enum da7219_clk_src { DA7219_CLKSRC_MCLK = 0, DA7219_CLKSRC_MCLK_SQR, |