src/mainboard/hp/pro_3500_series/smihandler.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi.h>
   4 #include <console/console.h>
   5 #include <cpu/x86/smm.h>
   6 #include <superio/ite/common/ite.h>
   7 #include "common_defines.h"
   8 #include "led.h"
   9
  10 /* Change power led state based on sleep type. */
  11 void mainboard_smi_sleep(u8 slp_typ)
  12 {
  13         printk(BIOS_DEBUG, "SMI: sleep S%d\n", slp_typ);
  14         switch (slp_typ) {
  15         case ACPI_S3:
  16                 /*
  17                  * Vendor firmware also only enables this when entering sleep.
  18                  * This saves some power when entering S5 via shutdown.
  19                  */
  20                 ite_enable_3vsbsw(GPIO_DEV);
  21                 set_power_led(LED_YELLOW);
  22                 break;
  23         case ACPI_S4:
  24                 /* Without 3vsbsw enabled the LED will be off in any case */
  25         case ACPI_S5:
  26                 set_power_led(LED_OFF);
  27                 break;
  28         default:
  29                 break;
  30         }
  31 }