diff options
Diffstat (limited to 'sound/soc/codecs/twl6040.c')
| -rw-r--r-- | sound/soc/codecs/twl6040.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c index f2f4bcb..3c79dbb 100644 --- a/sound/soc/codecs/twl6040.c +++ b/sound/soc/codecs/twl6040.c @@ -54,7 +54,12 @@ enum twl6040_dai_id { #define TWL6040_OUTHF_0dB 0x03 #define TWL6040_OUTHF_M52dB 0x1D -#define TWL6040_CACHEREGNUM (TWL6040_REG_STATUS + 1) +/* Shadow register used by the driver */ +#define TWL6040_REG_SW_SHADOW 0x2F +#define TWL6040_CACHEREGNUM (TWL6040_REG_SW_SHADOW + 1) + +/* TWL6040_REG_SW_SHADOW (0x2F) fields */ +#define TWL6040_EAR_PATH_ENABLE 0x01 struct twl6040_jack_data { struct snd_soc_jack *jack; @@ -130,6 +135,8 @@ static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = { 0x00, /* REG_HFOTRIM 0x2C */ 0x09, /* REG_ACCCTL 0x2D */ 0x00, /* REG_STATUS 0x2E (ro) */ + + 0x00, /* REG_SW_SHADOW 0x2F - Shadow, non HW register */ }; /* List of registers to be restored after power up */ @@ -213,8 +220,12 @@ static int twl6040_read_reg_volatile(struct snd_soc_codec *codec, if (reg >= TWL6040_CACHEREGNUM) return -EIO; - value = twl6040_reg_read(twl6040, reg); - twl6040_write_reg_cache(codec, reg, value); + if (likely(reg < TWL6040_REG_SW_SHADOW)) { + value = twl6040_reg_read(twl6040, reg); + twl6040_write_reg_cache(codec, reg, value); + } else { + value = twl6040_read_reg_cache(codec, reg); + } return value; } @@ -235,7 +246,7 @@ static bool twl6040_is_path_unmuted(struct snd_soc_codec *codec, return priv->dl2_unmuted; default: return 1; - } + }; } /* @@ -250,7 +261,8 @@ static int twl6040_write(struct snd_soc_codec *codec, return -EIO; twl6040_write_reg_cache(codec, reg, value); - if (twl6040_is_path_unmuted(codec, reg)) + if (likely(reg < TWL6040_REG_SW_SHADOW) && + twl6040_is_path_unmuted(codec, reg)) return twl6040_reg_write(twl6040, reg, value); else return 0; @@ -543,7 +555,7 @@ static const struct snd_kcontrol_new hfr_mux_controls = SOC_DAPM_ENUM("Route", twl6040_hf_enum[1]); static const struct snd_kcontrol_new ep_path_enable_control = - SOC_DAPM_SINGLE_VIRT("Switch", 1); + SOC_DAPM_SINGLE("Switch", TWL6040_REG_SW_SHADOW, 0, 1, 0); static const struct snd_kcontrol_new auxl_switch_control = SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 6, 1, 0); @@ -1088,7 +1100,7 @@ static void twl6040_mute_path(struct snd_soc_codec *codec, enum twl6040_dai_id i break; default: break; - } + }; } static int twl6040_digital_mute(struct snd_soc_dai *dai, int mute) |