Patrick Georgi (pgeorgi@google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17627
-gerrit
commit 4f53f36f23c2c7d926bfa61d72a9e2956ad8c4e1 Author: Julius Werner jwerner@chromium.org Date: Mon Nov 21 20:14:07 2016 -0800
google/chromeec: Add command to control USB PD role
Normally firmware should have no business messing with the USB PD role (source/sink/whatever) in the EC. But, as so often happens, ugly issues crop up that require weird work-arounds, and before you know it you need to do this for some reason that only makes sense in context. I do now, so add this function to send the necessary host command in the simplest possible fashion.
BRANCH=gru BUG=chrome-os-partner:59346 TEST=Used it in a follow-up patch.
Change-Id: I07d40feafd6a8387a633d6384efb205baf578d76 Signed-off-by: Patrick Georgi pgeorgi@chromium.org Original-Commit-Id: 8b71767caccff9b77d458182ce8066f7abf6321c Original-Change-Id: Ie8d0be98f6b703f4db062fe2f728cd2588347202 Original-Signed-off-by: Julius Werner jwerner@chromium.org Original-Reviewed-on: https://chromium-review.googlesource.com/413030 Original-Reviewed-by: Vincent Palatin vpalatin@chromium.org --- src/ec/google/chromeec/ec.c | 22 ++++++++++++++++++++++ src/ec/google/chromeec/ec.h | 1 + 2 files changed, 23 insertions(+)
diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index 1308c3d..d0648f7 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -497,6 +497,28 @@ int google_chromeec_set_usb_charge_mode(u8 port_id, enum usb_charge_mode mode) return google_chromeec_command(&cmd); }
+int google_chromeec_set_usb_pd_role(u8 port, enum usb_pd_control_role role) +{ + struct ec_params_usb_pd_control req = { + .port = port, + .role = role, + .mux = USB_PD_CTRL_MUX_NO_CHANGE, + .swap = USB_PD_CTRL_SWAP_NONE, + }; + struct ec_response_usb_pd_control rsp; + struct chromeec_command cmd = { + .cmd_code = EC_CMD_USB_PD_CONTROL, + .cmd_version = 0, + .cmd_data_in = &req, + .cmd_size_in = sizeof(req), + .cmd_data_out = &rsp, + .cmd_size_out = sizeof(rsp), + .cmd_dev_index = 0, + }; + + return google_chromeec_command(&cmd); +} + #ifndef __SMM__
static diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h index f765fe4..71cea7e 100644 --- a/src/ec/google/chromeec/ec.h +++ b/src/ec/google/chromeec/ec.h @@ -76,6 +76,7 @@ enum usb_charge_mode { USB_CHARGE_MODE_DOWNSTREAM_1500MA, }; int google_chromeec_set_usb_charge_mode(u8 port_id, enum usb_charge_mode mode); +int google_chromeec_set_usb_pd_role(u8 port, enum usb_pd_control_role role);
/* internal structure to send a command to the EC and wait for response. */ struct chromeec_command {
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Patrick Georgi