From c96d12e5ec9310947a24a3c3a03bccc7b01898c3 Mon Sep 17 00:00:00 2001 From: Karthikeyan Ramasubramanian Date: Tue, 4 Aug 2020 16:50:02 -0600 Subject: ec/google/chromeec: Add helper to request AP reset Add a helper function to initiate AP reset through Embedded Controller (EC). BUG=b:162290856 TEST=Ensure that the EC resets AP on boards where the command is supported. Change-Id: I01d7dfec72a8a3f6d2c4844bc062672e494860d8 Signed-off-by: Karthikeyan Ramasubramanian Reviewed-on: https://review.coreboot.org/c/coreboot/+/44188 Reviewed-by: Furquan Shaikh Reviewed-by: Nick Vaccaro Reviewed-by: Edward O'Callaghan Reviewed-by: Tim Wawrzynczak Reviewed-by: Justin TerAvest Reviewed-by: Angel Pons Tested-by: build bot (Jenkins) --- src/ec/google/chromeec/ec.c | 18 ++++++++++++++++++ src/ec/google/chromeec/ec.h | 7 +++++++ 2 files changed, 25 insertions(+) (limited to 'src/ec/google/chromeec') diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index e66e3b16c9..40285dc81d 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -1539,3 +1539,21 @@ int google_chromeec_get_keybd_config(struct ec_response_keybd_config *keybd) return 0; } + +int google_chromeec_ap_reset(void) +{ + struct chromeec_command cmd = { + .cmd_code = EC_CMD_AP_RESET, + .cmd_version = 0, + .cmd_data_in = NULL, + .cmd_size_in = 0, + .cmd_data_out = NULL, + .cmd_size_out = 0, + .cmd_dev_index = 0, + }; + + if (google_chromeec_command(&cmd)) + return -1; + + return 0; +} diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h index aead5f7fa8..9d4e58842e 100644 --- a/src/ec/google/chromeec/ec.h +++ b/src/ec/google/chromeec/ec.h @@ -337,6 +337,13 @@ int google_chromeec_get_pd_port_caps(int port, */ int google_chromeec_get_keybd_config(struct ec_response_keybd_config *keybd); +/** + * Send EC command to perform AP reset + * + * @return 0 on success, -1 on error + */ +int google_chromeec_ap_reset(void); + #if CONFIG(HAVE_ACPI_TABLES) /** * Writes USB Type-C PD related information to the SSDT -- cgit v1.2.3