diff options
| author | Daisuke Nojiri <dnojiri@chromium.org> | 2018-01-26 17:36:44 -0800 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2018-02-17 04:00:12 +0000 |
| commit | 476c2c5808a77508f31d47ce871c32a97c6e6eeb (patch) | |
| tree | 6a9768867464b015cafae87353e67c71d430b988 /src/ec | |
| parent | 3fe3f0409cd340112d62283bf79be9f106a6dff8 (diff) | |
chromeec: Add google_chromeec_pd_get_amode
The google_chromeec_pd_get_amode API checks whether TCPM is in a
specified alternate mode or not.
BUG=b:72387533
BRANCH=none
TEST=See 23746 "mb/google/fizz: Wait until display is ready"
Change-Id: Ib9b4ad06b61326fa167c77758603e038d817f928
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://review.coreboot.org/23744
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/ec')
| -rw-r--r-- | src/ec/google/chromeec/ec.c | 48 | ||||
| -rw-r--r-- | src/ec/google/chromeec/ec.h | 1 |
2 files changed, 49 insertions, 0 deletions
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index 4bb7bb38cf..7fc360af64 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -936,3 +936,51 @@ int google_ec_running_ro(void) #endif /* ! __SMM__ */ #endif /* ! __PRE_RAM__ */ + +/** + * Check if EC/TCPM is in an alternate mode or not. + * + * @param svid SVID of the alternate mode to check + * @return 0: Not in the mode. -1: Error. 1: Yes. + */ +int google_chromeec_pd_get_amode(uint16_t svid) +{ + struct ec_response_usb_pd_ports r; + struct chromeec_command cmd; + int i; + + cmd.cmd_code = EC_CMD_USB_PD_PORTS; + cmd.cmd_version = 0; + cmd.cmd_data_in = NULL; + cmd.cmd_size_in = 0; + cmd.cmd_data_out = &r; + cmd.cmd_size_out = sizeof(r); + cmd.cmd_dev_index = 0; + if (google_chromeec_command(&cmd) < 0) + return -1; + + for (i = 0; i < r.num_ports; i++) { + struct ec_params_usb_pd_get_mode_request p; + struct ec_params_usb_pd_get_mode_response res; + + p.port = i; + p.svid_idx = 0; + cmd.cmd_code = EC_CMD_USB_PD_GET_AMODE; + cmd.cmd_version = 0; + cmd.cmd_data_in = &p; + cmd.cmd_size_in = sizeof(p); + cmd.cmd_data_out = &res; + cmd.cmd_size_out = sizeof(res); + cmd.cmd_dev_index = 0; + + do { + if (google_chromeec_command(&cmd) < 0) + return -1; + if (res.svid == svid) + return 1; + p.svid_idx++; + } while (res.svid); + } + + return 0; +} diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h index c15a50641a..945e0b9891 100644 --- a/src/ec/google/chromeec/ec.h +++ b/src/ec/google/chromeec/ec.h @@ -36,6 +36,7 @@ u8 google_chromeec_get_event(void); bool google_chromeec_is_uhepi_supported(void); int google_ec_running_ro(void); void google_chromeec_init(void); +int google_chromeec_pd_get_amode(uint16_t svid); /* Device events */ uint64_t google_chromeec_get_device_enabled_events(void); |