diff options
| author | Derek Huang <derek.huang@intel.corp-partner.google.com> | 2021-08-25 17:19:39 +0800 |
|---|---|---|
| committer | Tim Wawrzynczak <twawrzynczak@chromium.org> | 2021-10-06 22:19:00 +0000 |
| commit | c0bd123408680d3d7b0bb2c64acd103e2f13ec17 (patch) | |
| tree | 54eb07cf005a10de6b8e2bf8cbe8575fe5e039d7 /src/ec/google/chromeec/ec.h | |
| parent | c0f005a5d6e26c29bd1379163b890331ba8b38d0 (diff) | |
ec/google/chromeec: Add APIs for USB-C DP ALT mode
Add API to allow AP to send the command to EC to enter DP ALT mode
and API to wait for DP HPD event.
BUG=b:192947843
TEST=select ENABLE_TCSS_DISPLAY_DETECTION in Kconfig.name. Build
coreboot and update your system. Boot the system you will find below
message in the coreboot log with or without USB-C display connected:
'HPD ready after %lu ms' or 'HPD not ready after %ldms. Abort.'.
Signed-off-by: Derek Huang <derek.huang@intel.corp-partner.google.com>
Change-Id: Id11510c1ff58579ae2cddfe5a4d69646fd84f5c3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57138
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/ec/google/chromeec/ec.h')
| -rw-r--r-- | src/ec/google/chromeec/ec.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h index 6fa58a9a1e..a06dfa19c0 100644 --- a/src/ec/google/chromeec/ec.h +++ b/src/ec/google/chromeec/ec.h @@ -40,6 +40,14 @@ int google_chromeec_usb_pd_get_info(int port, bool *ufp, bool *dbg_acc, * >=1: Bitmask of the ports that DP device is connected */ int google_chromeec_wait_for_displayport(long timeout_ms); +/* Poll (up to `timeout_ms` ms) for a Hot-Plug Detect (HPD) + * event on the specified port. + * Return: 0 on HPD ready, -1 on timeout */ +int google_chromeec_wait_for_dp_hpd(int port, long timeout_ms); +/* Send command to EC to request to enter DisplayPort ALT mode on the + * specified port. + * Return: 0 on success, -1 on error */ +int google_chromeec_typec_control_enter_dp_mode(int port); /* Device events */ uint64_t google_chromeec_get_device_enabled_events(void); |