diff options
Diffstat (limited to 'driver')
| -rw-r--r-- | driver/tcpm/it83xx.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/driver/tcpm/it83xx.c b/driver/tcpm/it83xx.c index 4c24a84b13..3991de5fff 100644 --- a/driver/tcpm/it83xx.c +++ b/driver/tcpm/it83xx.c @@ -234,6 +234,14 @@ static void it83xx_enable_vconn(enum usbpd_port port, int enabled) } } +static void it83xx_enable_cc(enum usbpd_port port, int enable) +{ + if (enable) + CLEAR_MASK(IT83XX_USBPD_CCGCR(port), (1 << 4)); + else + SET_MASK(IT83XX_USBPD_CCGCR(port), (1 << 4)); +} + static void it83xx_set_power_role(enum usbpd_port port, int power_role) { /* PD_ROLE_SINK 0, PD_ROLE_SOURCE 1 */ @@ -310,12 +318,27 @@ static void it83xx_select_polarity(enum usbpd_port port, CLEAR_MASK(IT83XX_USBPD_CCGCR(port), (1 << 0)); } -static void it83xx_set_cc(enum usbpd_port port, int pull) +static int it83xx_set_cc(enum usbpd_port port, int pull) { - if (pull == TYPEC_CC_RD) + int enable_cc = 1; + + switch (pull) { + case TYPEC_CC_RD: it83xx_set_power_role(port, PD_ROLE_SINK); - else if (pull == TYPEC_CC_RP) + break; + case TYPEC_CC_RP: it83xx_set_power_role(port, PD_ROLE_SOURCE); + break; + case TYPEC_CC_OPEN: + /* Power-down CC1 & CC2 to remove Rp/Rd */ + enable_cc = 0; + break; + default: + return EC_ERROR_UNIMPLEMENTED; + } + + it83xx_enable_cc(port, enable_cc); + return EC_SUCCESS; } static int it83xx_tcpm_init(int port) @@ -363,9 +386,7 @@ static int it83xx_tcpm_select_rp_value(int port, int rp_sel) static int it83xx_tcpm_set_cc(int port, int pull) { - it83xx_set_cc(port, pull); - - return EC_SUCCESS; + return it83xx_set_cc(port, pull); } static int it83xx_tcpm_set_polarity(int port, int polarity) |