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/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/io.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <southbridge/intel/i82801gx/i82801gx.h>
#include <southbridge/intel/i82801gx/nvs.h>
#include <southbridge/intel/common/gpio.h>
#include <ec/acpi/ec.h>
#include "ec_oem.c"
#define MAX_LCD_BRIGHTNESS 0xd8
/* The southbridge SMI handler checks whether gnvs has a
* valid pointer before calling the trap handler
*/
extern global_nvs_t *gnvs;
int mainboard_io_trap_handler(int smif)
{
u8 reg8;
u32 reg32;
switch (smif) {
case 0x2b:
printk(BIOS_DEBUG, "CPU power state switch\n");
// TODO, move to CPU handler?
break;
case 0x3d:
printk(BIOS_DEBUG, "Enable C-State SMM coordination\n");
// TODO, move to CPU handler?
break;
case 0x46:
printk(BIOS_DEBUG, "S3 DTS SMI (completely re-enable DTS)\n");
// TODO, move to CPU handler?
break;
case 0x47:
printk(BIOS_DEBUG, "S4 DTS SMI (Update NVS DTS temperature)\n");
// TODO, move to CPU handler?
break;
case 0xc0:
printk(BIOS_DEBUG, "Disable RF\n");
// TODO
break;
case 0xd0:
printk(BIOS_DEBUG, "ACBS LAN Power on\n");
// TODO
break;
case 0xd1:
printk(BIOS_DEBUG, "ACBS LAN Power off\n");
// TODO
break;
case 0xd2:
printk(BIOS_DEBUG, "Check AC status\n");
// TODO
break;
case 0xd3:
printk(BIOS_DEBUG, "Enable Bluetooth\n");
// TODO
break;
case 0xd4:
printk(BIOS_DEBUG, "Disable Bluetooth\n");
// TODO
break;
case 0xd5:
printk(BIOS_DEBUG, "Set Brightness\n");
reg8 = gnvs->brtl;
printk(BIOS_DEBUG, "brtl: %x\n", reg8);
ec_write(0x17, reg8);
break;
case 0xd6:
printk(BIOS_DEBUG, "Get Brightness\n");
reg8 = ec_read(0x17);
printk(BIOS_DEBUG, "brtl: %x\n", reg8);
gnvs->brtl = reg8;
break;
case 0xd7:
printk(BIOS_DEBUG, "Get ECO mode status\n");
// TODO
break;
case 0xd8:
printk(BIOS_DEBUG, "Get sunlight readable status\n");
// TODO
break;
case 0xd9:
printk(BIOS_DEBUG, "Get docking connection\n");
// TODO
break;
case 0xda:
printk(BIOS_DEBUG, "Power off docking\n");
// TODO
break;
case 0xdc:
printk(BIOS_DEBUG, "EC: Turn on LED on ECO enable\n");
// TODO
break;
case 0xdd:
printk(BIOS_DEBUG, "EC: Turn off LED on ECO disable\n");
// TODO
break;
case 0xde:
printk(BIOS_DEBUG, "LAN power off\n");
reg32 = inl(DEFAULT_GPIOBASE + GP_LVL);
reg32 |= (1 << 24); // Disable LAN Power
outl(reg32, DEFAULT_GPIOBASE + GP_LVL);
break;
case 0xdf:
printk(BIOS_DEBUG, "RF enable\n");
// TODO
break;
case 0xe0:
printk(BIOS_DEBUG, "Get RTC wake flag\n");
// TODO
break;
case 0xe1:
printk(BIOS_DEBUG, "Hotkey function\n");
// TODO
break;
case 0xe3:
printk(BIOS_DEBUG, "ECO disable\n");
// TODO
break;
default:
return 0;
}
/* gnvs->smif:
* On success, the IO Trap Handler returns 0
* On failure, the IO Trap Handler returns a value != 0
*/
gnvs->smif = 0;
return 1;
}
static void mainboard_smi_hotkey(u8 hotkey)
{
u8 reg8;
switch (hotkey) {
case 0x3b: break; // Fn+F1
case 0x3c: break; // Fn+F2
case 0x3d: break; // Fn+F3
case 0x3e: break; // Fn+F4
case 0x3f: break; // Fn+F5
case 0x40: // Fn+F6 (Decrease Display Brightness)
reg8 = ec_read(0x17);
reg8 = (reg8 > 8) ? (reg8 - 8) : 0;
ec_write(0x17, reg8);
return;
case 0x41: // Fn+F7 (Increase Display Brightness)
reg8 = ec_read(0x17);
reg8 += 8;
reg8 = (reg8 >= MAX_LCD_BRIGHTNESS) ? MAX_LCD_BRIGHTNESS : reg8;
ec_write(0x17, reg8);
return;
case 0x42: break; // Fn+F8
case 0x43: break; // Fn+F9
case 0x44: break; // Fn+F10
case 0x57: break; // Fn+F11
case 0x58: break; // Fn+F12
}
printk(BIOS_DEBUG, "EC hotkey: %02x\n", hotkey);
}
void mainboard_smi_gpi(u32 gpi_sts)
{
u8 source, hotkey;
send_ec_oem_command(0x5c);
source = recv_ec_oem_data();
switch (source) {
case 0:
// Some kind of ACK?
break;
case 1:
send_ec_oem_command(0x59);
hotkey = recv_ec_oem_data();
mainboard_smi_hotkey(hotkey);
break;
default:
printk(BIOS_DEBUG, "EC SMI source: %02x\n", source);
}
}
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