| /* 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/nvs.h> |
| #include <southbridge/intel/lynxpoint/pch.h> |
| #include <southbridge/intel/common/gpio.h> |
| #include <southbridge/intel/lynxpoint/me.h> |
| #include <northbridge/intel/haswell/haswell.h> |
| #include <cpu/intel/haswell/haswell.h> |
| #include <elog.h> |
| |
| /* Include EC functions */ |
| #include <ec/google/chromeec/ec.h> |
| #include <ec/google/chromeec/smm.h> |
| #include "ec.h" |
| |
| /* Codec enable: GPIO45 */ |
| #define GPIO_PP3300_CODEC_EN 45 |
| /* GPIO46 controls the WLAN_DISABLE_L signal. */ |
| #define GPIO_WLAN_DISABLE_L 46 |
| #define GPIO_LTE_DISABLE_L 59 |
| |
| 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(get_pmbase() + PM1_CNT); |
| pm1_cnt |= (0xf << 10); |
| outl(pm1_cnt, get_pmbase() + 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); |
| } |
| } |
| |
| 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); |
| if (gnvs->s3u1 == 0) |
| google_chromeec_set_usb_charge_mode( |
| 1, USB_CHARGE_MODE_DISABLED); |
| |
| /* Prevent leak from standby rail to WLAN rail in S3. */ |
| set_gpio(GPIO_WLAN_DISABLE_L, 0); |
| set_gpio(GPIO_PP3300_CODEC_EN, 0); |
| /* Disable LTE */ |
| set_gpio(GPIO_LTE_DISABLE_L, 0); |
| |
| /* Enable wake events */ |
| google_chromeec_set_wake_mask(MAINBOARD_EC_S3_WAKE_EVENTS); |
| break; |
| case ACPI_S4: |
| case ACPI_S5: |
| if (gnvs->s5u0 == 0) |
| google_chromeec_set_usb_charge_mode( |
| 0, USB_CHARGE_MODE_DISABLED); |
| if (gnvs->s5u1 == 0) |
| google_chromeec_set_usb_charge_mode( |
| 1, USB_CHARGE_MODE_DISABLED); |
| |
| /* Prevent leak from standby rail to WLAN rail in S5. */ |
| set_gpio(GPIO_WLAN_DISABLE_L, 0); |
| set_gpio(GPIO_PP3300_CODEC_EN, 0); |
| /* Disable LTE */ |
| set_gpio(GPIO_LTE_DISABLE_L, 0); |
| |
| /* 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) |
| { |
| chromeec_smi_apmc(apmc, MAINBOARD_EC_SCI_EVENTS, MAINBOARD_EC_SMI_EVENTS); |
| return 0; |
| } |