/* SPDX-License-Identifier: GPL-2.0-only */ #include <acpi/acpi.h> #include <arch/io.h> #include <console/console.h> #include <cpu/x86/smm.h> #include <soc/pm.h> #include <elog.h> #include <ec/google/chromeec/ec.h> #include <southbridge/intel/lynxpoint/lp_gpio.h> #include <soc/iomap.h> #include <soc/nvs.h> #include "ec.h" #include <variant/onboard.h> static u8 mainboard_smi_ec(void) { u8 cmd = google_chromeec_get_event(); u32 pm1_cnt; /* Log this event */ if (cmd) elog_gsmi_add_event_byte(ELOG_TYPE_EC_EVENT, cmd); switch (cmd) { case EC_HOST_EVENT_LID_CLOSED: printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n"); /* Go to S5 */ pm1_cnt = inl(ACPI_BASE_ADDRESS + PM1_CNT); pm1_cnt |= (0xf << 10); outl(pm1_cnt, ACPI_BASE_ADDRESS + PM1_CNT); break; } return cmd; } /* gpi_sts is GPIO 47:32 */ void mainboard_smi_gpi(u32 gpi_sts) { if (gpi_sts & (1 << (EC_SMI_GPI - 32))) { /* Process all pending events */ while (mainboard_smi_ec() != 0) ; } } static void mainboard_disable_gpios(void) { #if CONFIG(BOARD_GOOGLE_SAMUS) /* Put SSD in reset to prevent leak */ set_gpio(BOARD_SSD_RESET_GPIO, 0); /* Disable LTE */ set_gpio(BOARD_LTE_DISABLE_GPIO, 0); #else set_gpio(BOARD_PP3300_CODEC_GPIO, 0); #endif /* Prevent leak from standby rail to WLAN rail */ set_gpio(BOARD_WLAN_DISABLE_GPIO, 0); } void mainboard_smi_sleep(u8 slp_typ) { /* Disable USB charging if required */ switch (slp_typ) { case ACPI_S3: if (gnvs->s3u0 == 0) { google_chromeec_set_usb_charge_mode( 0, USB_CHARGE_MODE_DISABLED); google_chromeec_set_usb_charge_mode( 1, USB_CHARGE_MODE_DISABLED); } mainboard_disable_gpios(); /* Enable wake events */ google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS); break; case ACPI_S5: if (gnvs->s5u0 == 0) { google_chromeec_set_usb_charge_mode( 0, USB_CHARGE_MODE_DISABLED); google_chromeec_set_usb_charge_mode( 1, USB_CHARGE_MODE_DISABLED); } mainboard_disable_gpios(); /* Enable wake events */ google_chromeec_set_wake_mask(MAINBOARD_EC_S5_WAKE_EVENTS); break; } /* Disable SCI and SMI events */ google_chromeec_set_smi_mask(0); google_chromeec_set_sci_mask(0); /* Clear pending events that may trigger immediate wake */ while (google_chromeec_get_event() != EC_HOST_EVENT_NONE) ; } int mainboard_smi_apmc(u8 apmc) { switch (apmc) { case APM_CNT_ACPI_ENABLE: google_chromeec_set_smi_mask(0); /* Clear all pending events */ while (google_chromeec_get_event() != EC_HOST_EVENT_NONE) ; google_chromeec_set_sci_mask(MAINBOARD_EC_SCI_EVENTS); break; case APM_CNT_ACPI_DISABLE: google_chromeec_set_sci_mask(0); /* Clear all pending events */ while (google_chromeec_get_event() != EC_HOST_EVENT_NONE) ; google_chromeec_set_smi_mask(MAINBOARD_EC_SMI_EVENTS); break; } return 0; }