diff options
Diffstat (limited to 'sound/soc/codecs/tlv320aic3x.h')
| -rw-r--r-- | sound/soc/codecs/tlv320aic3x.h | 46 |
1 files changed, 45 insertions, 1 deletions
diff --git a/sound/soc/codecs/tlv320aic3x.h b/sound/soc/codecs/tlv320aic3x.h index 7e982acf399..73e35b6ec92 100644 --- a/sound/soc/codecs/tlv320aic3x.h +++ b/sound/soc/codecs/tlv320aic3x.h @@ -39,7 +39,9 @@ #define AIC3X_OVRF_STATUS_AND_PLLR_REG 11 /* Audio codec digital filter control register */ #define AIC3X_CODEC_DFILT_CTRL 12 - +/* Headset/button press detection register */ +#define AIC3X_HEADSET_DETECT_CTRL_A 13 +#define AIC3X_HEADSET_DETECT_CTRL_B 14 /* ADC PGA Gain control registers */ #define LADC_VOL 15 #define RADC_VOL 16 @@ -233,7 +235,49 @@ enum { void aic3x_set_gpio(struct snd_soc_codec *codec, int gpio, int state); int aic3x_get_gpio(struct snd_soc_codec *codec, int gpio); + +/* headset detection / button API */ + +/* The AIC3x supports detection of stereo headsets (GND + left + right signal) + * and cellular headsets (GND + speaker output + microphone input). + * It is recommended to enable MIC bias for this function to work properly. + * For more information, please refer to the datasheet. */ +enum { + AIC3X_HEADSET_DETECT_OFF = 0, + AIC3X_HEADSET_DETECT_STEREO = 1, + AIC3X_HEADSET_DETECT_CELLULAR = 2, + AIC3X_HEADSET_DETECT_BOTH = 3 +}; + +enum { + AIC3X_HEADSET_DEBOUNCE_16MS = 0, + AIC3X_HEADSET_DEBOUNCE_32MS = 1, + AIC3X_HEADSET_DEBOUNCE_64MS = 2, + AIC3X_HEADSET_DEBOUNCE_128MS = 3, + AIC3X_HEADSET_DEBOUNCE_256MS = 4, + AIC3X_HEADSET_DEBOUNCE_512MS = 5 +}; + +enum { + AIC3X_BUTTON_DEBOUNCE_0MS = 0, + AIC3X_BUTTON_DEBOUNCE_8MS = 1, + AIC3X_BUTTON_DEBOUNCE_16MS = 2, + AIC3X_BUTTON_DEBOUNCE_32MS = 3 +}; + +#define AIC3X_HEADSET_DETECT_ENABLED 0x80 +#define AIC3X_HEADSET_DETECT_SHIFT 5 +#define AIC3X_HEADSET_DETECT_MASK 3 +#define AIC3X_HEADSET_DEBOUNCE_SHIFT 2 +#define AIC3X_HEADSET_DEBOUNCE_MASK 7 +#define AIC3X_BUTTON_DEBOUNCE_SHIFT 0 +#define AIC3X_BUTTON_DEBOUNCE_MASK 3 + +/* see the enums above for valid parameters to this function */ +void aic3x_set_headset_detection(struct snd_soc_codec *codec, int detect, + int headset_debounce, int button_debounce); int aic3x_headset_detected(struct snd_soc_codec *codec); +int aic3x_button_pressed(struct snd_soc_codec *codec); struct aic3x_setup_data { int i2c_bus; |