src/mainboard/google/parrot/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 <halt.h>
   7 #include <southbridge/intel/bd82x6x/pch.h>
   8 #include <southbridge/intel/bd82x6x/me.h>
   9 #include <southbridge/intel/common/pmutil.h>
  10 #include <northbridge/intel/sandybridge/sandybridge.h>
  11 #include <ec/compal/ene932/ec.h>
  12 #include "ec.h"
  13
  14 static u8 mainboard_smi_ec(void)
  15 {
  16         u8 src;
  17
  18         ec_kbc_write_cmd(0x56);
  19         src = ec_kbc_read_ob();
  20         printk(BIOS_DEBUG, "%s src: %x\n", __func__, src);
  21
  22         switch (src) {
  23         case EC_BATTERY_CRITICAL:
  24                 break;
  25         case EC_LID_CLOSE:
  26                 printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
  27
  28                 /* Go to S5 */
  29                 poweroff();
  30                 break;
  31         }
  32
  33         return src;
  34 }
  35
  36 void mainboard_smi_gpi(u32 gpi_sts)
  37 {
  38         if (gpi_sts & (1 << EC_SMI_GPI)) {
  39                 /* Process all pending events from EC */
  40                 do {} while (mainboard_smi_ec() != EC_NO_EVENT);
  41         } else if (gpi_sts & (1 << EC_LID_GPI)) {
  42                 printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
  43
  44                 /* Go to S5 */
  45                 poweroff();
  46         }
  47 }
  48
  49 void mainboard_smi_sleep(u8 slp_typ)
  50 {
  51         bool usb0_disable = 0, usb1_disable = 0;
  52
  53         /* Disable SCI and SMI events */
  54
  55         /* Clear pending events that may trigger immediate wake */
  56
  57         /* Enable wake events */
  58
  59         /* Tell the EC to Disable USB power */
  60         usb_charge_mode_from_gnvs(3, &usb0_disable, &usb1_disable);
  61         if (usb0_disable && usb1_disable) {
  62                 ec_kbc_write_cmd(0x45);
  63                 ec_kbc_write_ib(0xF2);
  64         }
  65 }
  66
  67 int mainboard_smi_apmc(u8 apmc)
  68 {
  69         switch (apmc) {
  70         case APM_CNT_ACPI_ENABLE:
  71                 /* Clear all pending events */
  72                 /* EC cmd:59 data:E8 */
  73                 ec_kbc_write_cmd(0x59);
  74                 ec_kbc_write_ib(0xE8);
  75
  76                 /* Set LID GPI to generate SCIs */
  77                 gpi_route_interrupt(EC_LID_GPI, GPI_IS_SCI);
  78                 break;
  79         case APM_CNT_ACPI_DISABLE:
  80                 /* Clear all pending events */
  81                 /* EC cmd:59 data:e9 */
  82                 ec_kbc_write_cmd(0x59);
  83                 ec_kbc_write_ib(0xE9);
  84
  85                 /* Set LID GPI to generate SMIs */
  86                 gpi_route_interrupt(EC_LID_GPI, GPI_IS_SMI);
  87                 break;
  88         }
  89         return 0;
  90 }