src/mainboard/google/stout/smihandler.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <acpi/acpi_gnvs.h>
   4 #include <device/pci_ops.h>
   5 #include <console/console.h>
   6 #include <cpu/x86/smm.h>
   7 #include <halt.h>
   8 #include <soc/nvs.h>
   9 #include <southbridge/intel/bd82x6x/pch.h>
  10 #include <southbridge/intel/bd82x6x/me.h>
  11 #include <northbridge/intel/sandybridge/sandybridge.h>
  12
  13 /* Include EC functions */
  14 #include <ec/quanta/it8518/ec.h>
  15 #include "ec.h"
  16
  17 static u8 mainboard_smi_ec(void)
  18 {
  19         u8 cmd = ec_it8518_get_event();
  20
  21         switch (cmd) {
  22         case EC_SMI_LID_CLOSED:
  23                 printk(BIOS_DEBUG, "LID CLOSED, SHUTDOWN\n");
  24                 /* Go to S5 */
  25                 poweroff();
  26                 break;
  27         }
  28
  29         return cmd;
  30 }
  31
  32 void mainboard_smi_gpi(u32 gpi_sts)
  33 {
  34         if (gpi_sts & (1 << EC_SMI_GPI)) {
  35                 /* Process all pending events */
  36                 while (mainboard_smi_ec() != 0);
  37         }
  38 }
  39
  40 void mainboard_smi_sleep(u8 slp_typ)
  41 {
  42         bool usb0_disable = 0, usb1_disable = 0;
  43
  44         /*
  45          * Tell the EC to Enable USB power for S3 if requested.
  46          * Bit0 of 0x0D/Bit0 of 0x26
  47          * 0/0 All USB port off
  48          * 1/0 USB on, all USB port didn't support wake up
  49          * 0/1 USB on, yellow port support wake up charge, but may not support
  50          *             charge smart phone.
  51          * 1/1 USB on, yellow port in AUTO mode and didn't support wake up system.
  52          */
  53         usb_charge_mode_from_gnvs(3, &usb0_disable, &usb1_disable);
  54
  55         if (!usb0_disable || !usb1_disable) {
  56                 ec_write(EC_PERIPH_CNTL_3, ec_read(EC_PERIPH_CNTL_3) | 0x00);
  57                 ec_write(EC_USB_S3_EN, ec_read(EC_USB_S3_EN) | 0x01);
  58                 printk(BIOS_DEBUG, "USB wake from S3 enabled.\n");
  59         } else {
  60                 /*
  61                  * If USB charging in suspend is disabled then also disable
  62                  * the XHCI PME to prevent wake when the port power is cut
  63                  * after the transition into suspend.
  64                  */
  65                 if (gnvs->xhci) {
  66                         pci_update_config32(PCH_XHCI_DEV, 0x74, ~(1 << 8), 1 << 15);
  67                 }
  68         }
  69
  70         ec_kbc_write_cmd(EC_KBD_CMD_MUTE);
  71         ec_it8518_enable_wake_events();
  72 }
  73
  74 int mainboard_smi_apmc(u8 apmc)
  75 {
  76         switch (apmc) {
  77         case APM_CNT_FINALIZE:
  78                 stout_ec_finalize_smm();
  79                 break;
  80         case APM_CNT_ACPI_ENABLE:
  81                 /*
  82                  * TODO(kimarie) Clear all pending events and enable SCI.
  83                  */
  84                 ec_write_cmd(EC_CMD_NOTIFY_ACPI_ENTER);
  85                 break;
  86         case APM_CNT_ACPI_DISABLE:
  87                 /*
  88                  * TODO(kimarie) Clear all pending events and enable SMI.
  89                  */
  90                 ec_write_cmd(EC_CMD_NOTIFY_ACPI_EXIT);
  91                 break;
  92         }
  93         return 0;
  94 }