| Message ID | 20230614-topic-sm8550-upstream-type-c-audio-v1-3-15a92565146b@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | typec: support Audio Accessory mode on FSA4480 | expand |
On Wed, Jun 14, 2023 at 03:10:41PM +0200, Neil Armstrong wrote: > The FSA4480 Type-C switch supports switching the Audio R/L, > AGND and MIC signals to the USB-C DP/DM and SBU1/2 to support > the Audio Accessory Mode. > > The FSA4480 has an integrated Audio jack detection mechanism > to automatically mux the AGND, MIX and Sense to the correct > SBU lines to support 3 pole and both 4 pole TRRS pinouts. > > Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > --- > drivers/usb/typec/mux/fsa4480.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/drivers/usb/typec/mux/fsa4480.c b/drivers/usb/typec/mux/fsa4480.c > index b2913594a58f..45f5683b7d81 100644 > --- a/drivers/usb/typec/mux/fsa4480.c > +++ b/drivers/usb/typec/mux/fsa4480.c > @@ -25,15 +25,24 @@ > #define FSA4480_DELAY_L_MIC 0x0e > #define FSA4480_DELAY_L_SENSE 0x0f > #define FSA4480_DELAY_L_AGND 0x10 > +#define FSA4480_FUNCTION_ENABLE 0x12 > #define FSA4480_RESET 0x1e > #define FSA4480_MAX_REGISTER 0x1f > > #define FSA4480_ENABLE_DEVICE BIT(7) > #define FSA4480_ENABLE_SBU GENMASK(6, 5) > #define FSA4480_ENABLE_USB GENMASK(4, 3) > +#define FSA4480_ENABLE_SENSE BIT(2) > +#define FSA4480_ENABLE_MIC BIT(1) > +#define FSA4480_ENABLE_AGND BIT(0) > > #define FSA4480_SEL_SBU_REVERSE GENMASK(6, 5) > #define FSA4480_SEL_USB GENMASK(4, 3) > +#define FSA4480_SEL_SENSE BIT(2) > +#define FSA4480_SEL_MIC BIT(1) > +#define FSA4480_SEL_AGND BIT(0) > + > +#define FSA4480_ENABLE_AUTO_JACK_DETECT BIT(0) > > struct fsa4480 { > struct i2c_client *client; > @@ -95,6 +104,9 @@ static int fsa4480_set(struct fsa4480 *fsa) > default: > return -EOPNOTSUPP; > } > + } else if (fsa->mode == TYPEC_MODE_AUDIO) { > + /* Audio Accessory Mode, setup to auto Jack Detection */ > + enable |= FSA4480_ENABLE_USB | FSA4480_ENABLE_AGND; > } else > return -EOPNOTSUPP; > > @@ -110,6 +122,11 @@ static int fsa4480_set(struct fsa4480 *fsa) > regmap_write(fsa->regmap, FSA4480_SWITCH_SELECT, sel); > regmap_write(fsa->regmap, FSA4480_SWITCH_ENABLE, enable); > > + /* Start AUDIO JACK DETECTION to setup MIC, AGND & Sense muxes */ > + if (enable & FSA4480_ENABLE_AGND) > + regmap_write(fsa->regmap, FSA4480_FUNCTION_ENABLE, > + FSA4480_ENABLE_AUTO_JACK_DETECT); > + > if (enable & FSA4480_ENABLE_SBU) { > /* 15us to allow the SBU switch to turn on again */ > usleep_range(15, 1000); thanks,
diff --git a/drivers/usb/typec/mux/fsa4480.c b/drivers/usb/typec/mux/fsa4480.c index b2913594a58f..45f5683b7d81 100644 --- a/drivers/usb/typec/mux/fsa4480.c +++ b/drivers/usb/typec/mux/fsa4480.c @@ -25,15 +25,24 @@ #define FSA4480_DELAY_L_MIC 0x0e #define FSA4480_DELAY_L_SENSE 0x0f #define FSA4480_DELAY_L_AGND 0x10 +#define FSA4480_FUNCTION_ENABLE 0x12 #define FSA4480_RESET 0x1e #define FSA4480_MAX_REGISTER 0x1f #define FSA4480_ENABLE_DEVICE BIT(7) #define FSA4480_ENABLE_SBU GENMASK(6, 5) #define FSA4480_ENABLE_USB GENMASK(4, 3) +#define FSA4480_ENABLE_SENSE BIT(2) +#define FSA4480_ENABLE_MIC BIT(1) +#define FSA4480_ENABLE_AGND BIT(0) #define FSA4480_SEL_SBU_REVERSE GENMASK(6, 5) #define FSA4480_SEL_USB GENMASK(4, 3) +#define FSA4480_SEL_SENSE BIT(2) +#define FSA4480_SEL_MIC BIT(1) +#define FSA4480_SEL_AGND BIT(0) + +#define FSA4480_ENABLE_AUTO_JACK_DETECT BIT(0) struct fsa4480 { struct i2c_client *client; @@ -95,6 +104,9 @@ static int fsa4480_set(struct fsa4480 *fsa) default: return -EOPNOTSUPP; } + } else if (fsa->mode == TYPEC_MODE_AUDIO) { + /* Audio Accessory Mode, setup to auto Jack Detection */ + enable |= FSA4480_ENABLE_USB | FSA4480_ENABLE_AGND; } else return -EOPNOTSUPP; @@ -110,6 +122,11 @@ static int fsa4480_set(struct fsa4480 *fsa) regmap_write(fsa->regmap, FSA4480_SWITCH_SELECT, sel); regmap_write(fsa->regmap, FSA4480_SWITCH_ENABLE, enable); + /* Start AUDIO JACK DETECTION to setup MIC, AGND & Sense muxes */ + if (enable & FSA4480_ENABLE_AGND) + regmap_write(fsa->regmap, FSA4480_FUNCTION_ENABLE, + FSA4480_ENABLE_AUTO_JACK_DETECT); + if (enable & FSA4480_ENABLE_SBU) { /* 15us to allow the SBU switch to turn on again */ usleep_range(15, 1000);
The FSA4480 Type-C switch supports switching the Audio R/L, AGND and MIC signals to the USB-C DP/DM and SBU1/2 to support the Audio Accessory Mode. The FSA4480 has an integrated Audio jack detection mechanism to automatically mux the AGND, MIX and Sense to the correct SBU lines to support 3 pole and both 4 pole TRRS pinouts. Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> --- drivers/usb/typec/mux/fsa4480.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)