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-rw-r--r--src/mainboard/google/glados/gpio.h7
-rw-r--r--src/mainboard/google/glados/smihandler.c30
2 files changed, 34 insertions, 3 deletions
diff --git a/src/mainboard/google/glados/gpio.h b/src/mainboard/google/glados/gpio.h
index 14f49eb917..d42b711d47 100644
--- a/src/mainboard/google/glados/gpio.h
+++ b/src/mainboard/google/glados/gpio.h
@@ -46,6 +46,13 @@
#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/glados/smihandler.c b/src/mainboard/google/glados/smihandler.c
index 7e34712515..cd0cc19a35 100644
--- a/src/mainboard/google/glados/smihandler.c
+++ b/src/mainboard/google/glados/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)