diff options
Diffstat (limited to 'src/ec/google')
| -rw-r--r-- | src/ec/google/chromeec/ec.c | 46 | ||||
| -rw-r--r-- | src/ec/google/chromeec/ec.h | 8 |
2 files changed, 54 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index 9086693770..5a8e4f6cd3 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -1508,6 +1508,33 @@ int google_chromeec_usb_pd_get_info(int port, bool *ufp, bool *dbg_acc, return 0; } +int google_chromeec_typec_control_enter_dp_mode(int port) +{ + if (!google_chromeec_check_feature(EC_FEATURE_TYPEC_REQUIRE_AP_MODE_ENTRY)) + return 0; + + struct ec_params_typec_control typec_control = { + .port = port, + .command = TYPEC_CONTROL_COMMAND_ENTER_MODE, + .mode_to_enter = TYPEC_MODE_DP, + }; + + struct chromeec_command cmd = { + .cmd_code = EC_CMD_TYPEC_CONTROL, + .cmd_version = 0, + .cmd_data_in = &typec_control, + .cmd_size_in = sizeof(typec_control), + .cmd_data_out = NULL, + .cmd_size_out = 0, + .cmd_dev_index = 0, + }; + + if (google_chromeec_command(&cmd) < 0) + return -1; + + return 0; +} + /** * Check for the current mux state in EC. Flags representing the mux state found * in ec_commands.h @@ -1632,6 +1659,25 @@ int google_chromeec_wait_for_displayport(long timeout_ms) return ret; } +int google_chromeec_wait_for_dp_hpd(int port, long timeout_ms) +{ + uint8_t mux_flags; + struct stopwatch sw; + + stopwatch_init_msecs_expire(&sw, timeout_ms); + do { + google_chromeec_usb_get_pd_mux_info(port, &mux_flags); + if (stopwatch_expired(&sw)) { + printk(BIOS_WARNING, "HPD not ready after %ldms. Abort.\n", timeout_ms); + return -1; + } + mdelay(100); + } while (!(mux_flags & USB_PD_MUX_HPD_LVL) || !(mux_flags & USB_PD_MUX_DP_ENABLED)); + printk(BIOS_INFO, "HPD ready after %lu ms\n", stopwatch_duration_msecs(&sw)); + + return 0; +} + int google_chromeec_get_keybd_config(struct ec_response_keybd_config *keybd) { struct chromeec_command cmd = { 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); |