diff options
| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2017-01-27 10:34:38 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-02-07 20:14:35 -0800 |
| commit | 8e4bcd49c05cc9859a10d170477e240403718979 (patch) | |
| tree | 2fcfb10df2ba4409c8b92a9e5f06740560231e70 /driver | |
| parent | 3b997a8d16179bbd8770f38337c531222c597638 (diff) | |
| download | chrome-ec-8e4bcd49c05cc9859a10d170477e240403718979.tar.gz | |
tcpm: it83xx: Add support for TYPEC_CC_OPEN
BUG=chrome-os-partner:62281
BRANCH=None
TEST=Verify compilation on it83xx w/ IT83XX_PD_EVB = 1.
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: Id82387e7d4782ed1a5e07f7968475988ff6da9d5
Reviewed-on: https://chromium-review.googlesource.com/434077
Commit-Ready: Shawn N <shawnn@chromium.org>
Tested-by: Shawn N <shawnn@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
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) |