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| author | Jett Rink <jettrink@chromium.org> | 2018-01-25 10:45:22 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-01-31 11:14:01 -0800 |
| commit | 760caca89bfe3d91fe7d66b8d435a105664fd0d3 (patch) | |
| tree | f965fbf49a3bfe6294f2c341a01a90ddaed06f75 /include/usbc_ppc.h | |
| parent | b245e71e82d4da9b1be27c6de45da1d2bd460751 (diff) | |
| download | chrome-ec-760caca89bfe3d91fe7d66b8d435a105664fd0d3.tar.gz | |
usb pd: Adding PPC vbus discharge path
Boards with a PPC will use the PPC to discharge the VBUS line instead
of the TCPC or GPIO discharge path.
BRANCH=none
BUG=b:72179253
TEST=Fall time after device removal on grunt within spec now
Change-Id: I822923a1cedb32a20efc3610cce4437ade3387f0
Signed-off-by: Jett Rink <jettrink@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/886563
Reviewed-by: Edward Hill <ecgh@chromium.org>
Diffstat (limited to 'include/usbc_ppc.h')
| -rw-r--r-- | include/usbc_ppc.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/usbc_ppc.h b/include/usbc_ppc.h index c005540e99..4fbb913a11 100644 --- a/include/usbc_ppc.h +++ b/include/usbc_ppc.h @@ -57,6 +57,15 @@ struct ppc_drv { */ int (*set_vbus_source_current_limit)(int port, enum tcpc_rp_value rp); + /** + * Discharge PD VBUS on src/sink disconnect & power role swap + * + * @param port: The Type-C port number. + * @param enable: 1 -> discharge vbus, 0 -> stop discharging vbus + * @return EC_SUCCESS on success, error otherwise. + */ + int (*discharge_vbus)(int port, int enable); + #ifdef CONFIG_CMD_PPC_DUMP /** * Perform a register dump of the PPC. @@ -131,6 +140,15 @@ int ppc_is_sourcing_vbus(int port); int ppc_set_vbus_source_current_limit(int port, enum tcpc_rp_value rp); /** + * Discharge PD VBUS on src/sink disconnect & power role swap + * + * @param port: The Type-C port number. + * @param enable: 1 -> discharge vbus, 0 -> stop discharging vbus + * @return EC_SUCCESS on success, error otherwise. + */ +int ppc_discharge_vbus(int port, int enable); + +/** * Turn on/off the charge path FET, such that current flows into the * system. * |