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| author | Scott Collyer <scollyer@google.com> | 2021-08-25 13:50:04 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-08-26 19:46:23 +0000 |
| commit | b4e7e05b7e36c53ea1ee9f0732a1c7d37a776c07 (patch) | |
| tree | 485a4a1a403bbe5d93dcf1be4cf0ae896284d7fc /common | |
| parent | 08b2deaf500d6be287839567b1887ad601885ffe (diff) | |
| download | chrome-ec-b4e7e05b7e36c53ea1ee9f0732a1c7d37a776c07.tar.gz | |
usb_mux: Add function to enable USB3.1 mode for UFP
This CL adds a new overridable function to allow boards more control
over the USB mux. For type-c only connections, the mux may only be set
one time based only on data role.
The default function returns false, so only boards which override this
function will be affected.
BUG=b:195042155
BRANCH=quiche
TEST=Verfied that when I connect USBC only source on gingerbread that
the TUSB1064 usb mux gets configured to enable USB3.1 mode.
Signed-off-by: Scott Collyer <scollyer@google.com>
Change-Id: I5cc7466d2d13c46b1ff6cfc48af577559591f6e4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3119224
Tested-by: Scott Collyer <scollyer@chromium.org>
Commit-Queue: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Diana Z <dzigterman@chromium.org>
Diffstat (limited to 'common')
| -rw-r--r-- | common/usb_common.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/common/usb_common.c b/common/usb_common.c index 97ebedc3d3..0aab746f44 100644 --- a/common/usb_common.c +++ b/common/usb_common.c @@ -458,6 +458,11 @@ enum pd_drp_next_states drp_auto_toggle_next_state( } } +__overridable bool usb_ufp_check_usb3_enable(int port) +{ + return false; +} + mux_state_t get_mux_mode_to_set(int port) { /* @@ -477,6 +482,16 @@ mux_state_t get_mux_mode_to_set(int port) if (pd_is_disconnected(port)) return USB_PD_MUX_NONE; + /* + * For type-c only connections, there may be a need to enable USB3.1 + * mode when the port is in a UFP data role, independent of any other + * conditions which are checked below. The default function returns + * false, so only boards that override this check will be affected. + */ + if (usb_ufp_check_usb3_enable(port) && pd_get_data_role(port) + == PD_ROLE_UFP) + return USB_PD_MUX_USB_ENABLED; + /* If new data role isn't DFP & we only support DFP, also disconnect. */ if (IS_ENABLED(CONFIG_USB_PD_DUAL_ROLE) && IS_ENABLED(CONFIG_USBC_SS_MUX_DFP_ONLY) && |