diff options
Diffstat (limited to 'driver/retimer/bb_retimer.c')
| -rw-r--r-- | driver/retimer/bb_retimer.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/driver/retimer/bb_retimer.c b/driver/retimer/bb_retimer.c index 319c965228..2e2e15f44f 100644 --- a/driver/retimer/bb_retimer.c +++ b/driver/retimer/bb_retimer.c @@ -492,6 +492,38 @@ static int retimer_set_state(const struct usb_mux *me, mux_state_t mux_state, set_retimer_con); } +void bb_retimer_hpd_update(const struct usb_mux *me, mux_state_t mux_state) +{ + uint32_t retimer_con_reg = 0; + + if (bb_retimer_read(me, BB_RETIMER_REG_CONNECTION_STATE, + &retimer_con_reg) != EC_SUCCESS) + return; + + /* + * Bit 14: IRQ_HPD (ignored if BIT8 = 0) + * 0 - No IRQ_HPD + * 1 - IRQ_HPD received + */ + if (mux_state & USB_PD_MUX_HPD_IRQ) + retimer_con_reg |= BB_RETIMER_IRQ_HPD; + else + retimer_con_reg &= ~BB_RETIMER_IRQ_HPD; + + /* + * Bit 15: HPD_LVL (ignored if BIT8 = 0) + * 0 - HPD_State Low + * 1 - HPD_State High + */ + if (mux_state & USB_PD_MUX_HPD_LVL) + retimer_con_reg |= BB_RETIMER_HPD_LVL; + else + retimer_con_reg &= ~BB_RETIMER_HPD_LVL; + + /* Writing the register4 */ + bb_retimer_write(me, BB_RETIMER_REG_CONNECTION_STATE, retimer_con_reg); +} + static int retimer_low_power_mode(const struct usb_mux *me) { return bb_retimer_power_enable(me, false); |