diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/chell/gpio.h | 7 | ||||
| -rw-r--r-- | src/mainboard/google/chell/smihandler.c | 30 |
2 files changed, 34 insertions, 3 deletions
diff --git a/src/mainboard/google/chell/gpio.h b/src/mainboard/google/chell/gpio.h index cb10be4915..20880cdb27 100644 --- a/src/mainboard/google/chell/gpio.h +++ b/src/mainboard/google/chell/gpio.h @@ -49,6 +49,13 @@ #define EC_SCI_GPI GPE0_DW2_16 #define EC_SMI_GPI GPP_E15 +/* Power rail control signals. */ +#define EN_PP3300_KEPLER GPP_C11 +#define EN_PP3300_DX_TOUCH GPP_C22 +#define EN_PP3300_DX_EMMC GPP_D5 +#define EN_PP1800_DX_EMMC GPP_D6 +#define EN_PP3300_DX_CAM GPP_D12 + #ifndef __ACPI__ /* Pad configuration in ramstage. */ static const struct pad_config gpio_table[] = { diff --git a/src/mainboard/google/chell/smihandler.c b/src/mainboard/google/chell/smihandler.c index 7e34712515..cd0cc19a35 100644 --- a/src/mainboard/google/chell/smihandler.c +++ b/src/mainboard/google/chell/smihandler.c @@ -19,6 +19,7 @@ #include <cpu/x86/smm.h> #include <elog.h> #include <ec/google/chromeec/ec.h> +#include <gpio.h> #include <soc/iomap.h> #include <soc/nvs.h> #include <soc/pm.h> @@ -80,9 +81,8 @@ void mainboard_smi_gpi_handler(const struct gpi_status *sts) } } -void mainboard_smi_sleep(u8 slp_typ) +static void google_ec_smi_sleep(u8 slp_typ) { -#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC) switch (slp_typ) { case 3: /* Enable wake events */ @@ -101,7 +101,31 @@ void mainboard_smi_sleep(u8 slp_typ) /* Clear pending events that may trigger immediate wake */ while (google_chromeec_get_event() != 0) ; -#endif +} + +static void mainboard_gpio_smi_sleep(u8 slp_typ) +{ + int i; + + /* Power down the rails on any sleep type. */ + gpio_t active_high_signals[] = { + EN_PP3300_KEPLER, + EN_PP3300_DX_TOUCH, + EN_PP3300_DX_EMMC, + EN_PP1800_DX_EMMC, + EN_PP3300_DX_CAM, + }; + + for (i = 0; i < ARRAY_SIZE(active_high_signals); i++) + gpio_set(active_high_signals[i], 0); +} + +void mainboard_smi_sleep(u8 slp_typ) +{ + if (IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC)) + google_ec_smi_sleep(slp_typ); + + mainboard_gpio_smi_sleep(slp_typ); } int mainboard_smi_apmc(u8 apmc) |