Matt DeVillier has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/80712?usp=email )
Change subject: ec/chromeec: Enable auto fan control on startup ......................................................................
ec/chromeec: Enable auto fan control on startup
Several older ChromeOS boards have issues with fan control on cold boot and/or on S3 resume, so add functionality to allow those boards to programmatically enable auto fan control.
TEST=build/boot google/link, verify fan ramps up/down accordingly with CPU load.
Change-Id: I08a8562531f8af0c71230477d0221d536443f096 Signed-off-by: Matt DeVillier matt.devillier@gmail.com --- M src/ec/google/chromeec/Kconfig M src/ec/google/chromeec/ec.c 2 files changed, 19 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/80712/1
diff --git a/src/ec/google/chromeec/Kconfig b/src/ec/google/chromeec/Kconfig index fb93b56..3b0beda 100644 --- a/src/ec/google/chromeec/Kconfig +++ b/src/ec/google/chromeec/Kconfig @@ -206,4 +206,10 @@ Fetch Second Source Factory Cache from CBI EEPROM and add it in the most significant 32 bits of firmware configuration.
+config EC_GOOGLE_CHROMEEC_AUTO_FAN_CTRL + depends on EC_GOOGLE_CHROMEEC + bool "Enable automatic fan control" + help + Put the fan in auto mode at boot. + source "src/ec/google/chromeec/*/Kconfig" diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c index fbb0033..da90558 100644 --- a/src/ec/google/chromeec/ec.c +++ b/src/ec/google/chromeec/ec.c @@ -1181,6 +1181,19 @@ void google_chromeec_init(void) { google_chromeec_log_uptimeinfo(); + + /* Enable automatic fan control */ + if (CONFIG(EC_GOOGLE_CHROMEEC_AUTO_FAN_CTRL)) { + struct chromeec_command cec_cmd; + cec_cmd.cmd_code = EC_CMD_THERMAL_AUTO_FAN_CTRL; + cec_cmd.cmd_version = 0; + cec_cmd.cmd_data_in = NULL; + cec_cmd.cmd_data_out = NULL; + cec_cmd.cmd_size_in = 0; + cec_cmd.cmd_size_out = 0; + cec_cmd.cmd_dev_index = 0; + google_chromeec_command(&cec_cmd); + } }
int google_ec_running_ro(void)