src/mainboard/google/butterfly/smihandler.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi_gnvs.h>
   4 #include <console/console.h>
   5 #include <cpu/x86/smm.h>
   6 #include <southbridge/intel/bd82x6x/pch.h>
   7 #include <southbridge/intel/bd82x6x/me.h>
   8 #include <northbridge/intel/sandybridge/sandybridge.h>
   9
  10 /* Include EC functions */
  11 #include <ec/quanta/ene_kb3940q/ec.h>
  12 #include "ec.h"
  13
  14 void mainboard_smi_sleep(u8 slp_typ)
  15 {
  16         bool usb0_disable = 0, usb1_disable = 0;
  17
  18         /* Tell the EC to Enable USB power for S3 if requested */
  19         usb_charge_mode_from_gnvs(3, &usb0_disable, &usb1_disable);
  20         if (!usb0_disable || !usb1_disable)
  21                 ec_mem_write(EC_EC_PSW, ec_mem_read(EC_EC_PSW) | EC_PSW_USB);
  22
  23         /* Disable wake on USB, LAN & RTC */
  24         /* Enable Wake from Keyboard */
  25         if ((slp_typ == 4) || (slp_typ == 5)) {
  26                 printk(BIOS_DEBUG, "Disabling wake on RTC\n");
  27                 ec_mem_write(EC_EC_PSW, EC_PSW_IKB);
  28         }
  29 }
  30
  31 int mainboard_smi_apmc(u8 apmc)
  32 {
  33         switch (apmc) {
  34         case APM_CNT_ACPI_ENABLE:
  35                 /* Clear all pending events and enable SCI */
  36                 ec_write_cmd(EC_CMD_ENABLE_ACPI_MODE);
  37                 break;
  38
  39         case APM_CNT_ACPI_DISABLE:
  40                 /* Clear all pending events and tell the EC that ACPI is disabled */
  41                 ec_write_cmd(EC_CMD_DISABLE_ACPI_MODE);
  42                 break;
  43         }
  44         return 0;
  45 }