diff options
| author | Rob Barnes <robbarnes@google.com> | 2021-01-06 09:03:59 -0700 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-01-25 19:21:56 +0000 |
| commit | c6baaa7c8201decf21362d55973c7176d300df95 (patch) | |
| tree | 8942bd577078ad07fd9fe32a3aeff864309143ed /baseboard/guybrush/usb_pd_policy.c | |
| parent | d289734a5c94de71b512df8b4736d406df9b6524 (diff) | |
| download | chrome-ec-c6baaa7c8201decf21362d55973c7176d300df95.tar.gz | |
guybrush: implement usb_pd_policy stubs
Implement pd stubs in usb_pd_policy. Based on zork implementation.
BUG=b:175400400
TEST=Build
BRANCH=None
Signed-off-by: Rob Barnes <robbarnes@google.com>
Change-Id: I4b87518bf758d3eb7245ad4eafd5a99dd824a150
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2613225
Reviewed-by: Diana Z <dzigterman@chromium.org>
Diffstat (limited to 'baseboard/guybrush/usb_pd_policy.c')
| -rw-r--r-- | baseboard/guybrush/usb_pd_policy.c | 46 |
1 files changed, 41 insertions, 5 deletions
diff --git a/baseboard/guybrush/usb_pd_policy.c b/baseboard/guybrush/usb_pd_policy.c index 213a457593..ac92a6e0ad 100644 --- a/baseboard/guybrush/usb_pd_policy.c +++ b/baseboard/guybrush/usb_pd_policy.c @@ -20,19 +20,55 @@ int pd_check_vconn_swap(int port) { - /* TODO */ - return 0; + /* + * Do not allow vconn swap 5V rail is off + * S5_PGOOD depends on PG_PP5000_S5 being asserted, + * so GPIO_S5_PGOOD is a reasonable proxy for PP5000_S5 + */ + return gpio_get_level(GPIO_S5_PGOOD); } void pd_power_supply_reset(int port) { - /* TODO */ + /* + * Don't need to shutoff VBus if we are not sourcing it + * TODO: Ensure Vbus sourcing is being disabled appropriately to + * avoid invalid TC states + */ + if (ppc_is_sourcing_vbus(port)) { + /* Disable VBUS. */ + ppc_vbus_source_enable(port, 0); + + /* Enable discharge if we were previously sourcing 5V */ + if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE)) + pd_set_vbus_discharge(port, 1); + } + + /* Notify host of power info change. */ + pd_send_host_event(PD_EVENT_POWER_CHANGE); } int pd_set_power_supply_ready(int port) { - /* TODO */ - return 0; + int rv; + + /* Disable charging. */ + rv = ppc_vbus_sink_enable(port, 0); + if (rv) + return rv; + + if (IS_ENABLED(CONFIG_USB_PD_DISCHARGE)) + pd_set_vbus_discharge(port, 0); + + /* Provide Vbus. */ + rv = ppc_vbus_source_enable(port, 1); + if (rv) + return rv; + + /* Notify host of power info change. */ + pd_send_host_event(PD_EVENT_POWER_CHANGE); + + return EC_SUCCESS; } int board_vbus_source_enabled(int port) |