src/mainboard/asrock/fatal1ty_z87_professional/smihandler.c

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #include <cpu/x86/smm.h>
   4 #include <device/pnp_ops.h>
   5 #include <southbridge/intel/lynxpoint/pch.h>
   6 #include <superio/nuvoton/common/nuvoton.h>
   7 #include <superio/nuvoton/nct6776/nct6776.h>
   8
   9 #define GPIO1_DEV PNP_DEV(0x2e, NCT6776_WDT1_GPIO01A_V)
  10 #define NUVOTON_ENTRY_KEY 0x87
  11 #define NUVOTON_EXIT_KEY 0xAA
  12
  13 /* Enable configuration: pass entry key '0x87' into index port dev
  14  * two times. */
  15 void nuvoton_pnp_enter_conf_state(pnp_devfn_t dev)
  16 {
  17         u16 port = dev >> 8;
  18         outb(NUVOTON_ENTRY_KEY, port);
  19         outb(NUVOTON_ENTRY_KEY, port);
  20 }
  21
  22 /* Disable configuration: pass exit key '0xAA' into index port dev. */
  23 void nuvoton_pnp_exit_conf_state(pnp_devfn_t dev)
  24 {
  25         u16 port = dev >> 8;
  26         outb(NUVOTON_EXIT_KEY, port);
  27 }
  28
  29 void mainboard_smi_sleep(u8 slp_typ)
  30 {
  31         /*
  32          * Cut off power to LEDs when system goes to sleep.
  33          */
  34         if (slp_typ >= ACPI_S3) {
  35
  36                 nuvoton_pnp_enter_conf_state(GPIO1_DEV);
  37
  38                 pnp_set_logical_device(GPIO1_DEV);
  39
  40                 pnp_write_config(GPIO1_DEV, 0xf0, 0xff);
  41                 pnp_write_config(GPIO1_DEV, 0xf1, 0xff);
  42
  43                 nuvoton_pnp_exit_conf_state(GPIO1_DEV);
  44         }
  45 }