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google/chromeec: Add new helper function to read MKBP events 

This change adds a new helper function google_chromeec_get_mkbp_event
that allows coreboot to query EC for the next available MKBP event.

Change-Id: Ia6d64586ca62378d08025c96c2689c00c816041f
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/22007
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Furquan Shaikh 2017-10-13 10:59:51 -07:00 committed by Furquan Shaikh
parent 530c6f9cc8
commit e01bf6452f
2 changed files with 21 additions and 0 deletions
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15
src/ec/google/chromeec/ec.c
View File

@ -160,6 +160,21 @@ int google_chromeec_clear_events_b(u32 mask)
EC_CMD_HOST_EVENT_CLEAR_B, mask);
}
int google_chromeec_get_mkbp_event(struct ec_response_get_next_event *event)
{
struct chromeec_command cmd;
cmd.cmd_code = EC_CMD_GET_NEXT_EVENT;
cmd.cmd_version = 0;
cmd.cmd_data_in = NULL;
cmd.cmd_size_in = 0;
cmd.cmd_data_out = event;
cmd.cmd_size_out = sizeof(*event);
cmd.cmd_dev_index = 0;
return google_chromeec_command(&cmd);
}
/* Get the current device event mask */
uint32_t google_chromeec_get_device_enabled_events(void)
{

6
src/ec/google/chromeec/ec.h
View File

@ -126,4 +126,10 @@ struct google_chromeec_event_info {
void google_chromeec_events_init(const struct google_chromeec_event_info *info,
bool is_s3_wakeup);
/*
* Get next available MKBP event in ec_response_get_next_event. Returns 0 on
* success, < 0 otherwise.
*/
int google_chromeec_get_mkbp_event(struct ec_response_get_next_event *event);
#endif /* _EC_GOOGLE_CHROMEEC_EC_H */