src/mainboard/getac/p470/smihandler.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2008-2009 coresystems GmbH
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; version 2 of
   9  * the License.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <arch/io.h>
  18 #include <console/console.h>
  19 #include <cpu/x86/smm.h>
  20 #include "southbridge/intel/i82801gx/i82801gx.h"
  21 #include "southbridge/intel/i82801gx/nvs.h"
  22 #include <ec/acpi/ec.h>
  23 #include "ec_oem.c"
  24
  25 #define MAX_LCD_BRIGHTNESS 0xd8
  26
  27 /* The southbridge SMI handler checks whether gnvs has a
  28  * valid pointer before calling the trap handler
  29  */
  30 extern global_nvs_t *gnvs;
  31
  32 int mainboard_io_trap_handler(int smif)
  33 {
  34         u8 reg8;
  35         u32 reg32;
  36
  37         switch (smif) {
  38         case 0x2b:
  39                 printk(BIOS_DEBUG, "CPU power state switch\n");
  40                 // TODO, move to CPU handler?
  41                 break;
  42         case 0x3d:
  43                 printk(BIOS_DEBUG, "Enable C-State SMM coordination\n");
  44                 // TODO, move to CPU handler?
  45                 break;
  46         case 0x46:
  47                 printk(BIOS_DEBUG, "S3 DTS SMI (completely re-enable DTS)\n");
  48                 // TODO, move to CPU handler?
  49                 break;
  50         case 0x47:
  51                 printk(BIOS_DEBUG, "S4 DTS SMI (Update NVS DTS temperature)\n");
  52                 // TODO, move to CPU handler?
  53                 break;
  54         case 0xc0:
  55                 printk(BIOS_DEBUG, "Disable RF\n");
  56                 // TODO
  57                 break;
  58         case 0xd0:
  59                 printk(BIOS_DEBUG, "ACBS LAN Power on\n");
  60                 // TODO
  61                 break;
  62         case 0xd1:
  63                 printk(BIOS_DEBUG, "ACBS LAN Power off\n");
  64                 // TODO
  65                 break;
  66         case 0xd2:
  67                 printk(BIOS_DEBUG, "Check AC status\n");
  68                 // TODO
  69                 break;
  70         case 0xd3:
  71                 printk(BIOS_DEBUG, "Enable Bluetooth\n");
  72                 // TODO
  73                 break;
  74         case 0xd4:
  75                 printk(BIOS_DEBUG, "Disable Bluetooth\n");
  76                 // TODO
  77                 break;
  78         case 0xd5:
  79                 printk(BIOS_DEBUG, "Set Brightness\n");
  80                 reg8 = gnvs->brtl;
  81                 printk(BIOS_DEBUG, "brtl: %x\n", reg8);
  82                 ec_write(0x17, reg8);
  83                 break;
  84         case 0xd6:
  85                 printk(BIOS_DEBUG, "Get Brightness\n");
  86                 reg8 = ec_read(0x17);
  87                 printk(BIOS_DEBUG, "brtl: %x\n", reg8);
  88                 gnvs->brtl = reg8;
  89                 break;
  90         case 0xd7:
  91                 printk(BIOS_DEBUG, "Get ECO mode status\n");
  92                 // TODO
  93                 break;
  94         case 0xd8:
  95                 printk(BIOS_DEBUG, "Get sunlight readable status\n");
  96                 // TODO
  97                 break;
  98         case 0xd9:
  99                 printk(BIOS_DEBUG, "Get docking connection\n");
 100                 // TODO
 101                 break;
 102         case 0xda:
 103                 printk(BIOS_DEBUG, "Power off docking\n");
 104                 // TODO
 105                 break;
 106         case 0xdc:
 107                 printk(BIOS_DEBUG, "EC: Turn on LED on ECO enable\n");
 108                 // TODO
 109                 break;
 110         case 0xdd:
 111                 printk(BIOS_DEBUG, "EC: Turn off LED on ECO disable\n");
 112                 // TODO
 113                 break;
 114         case 0xde:
 115                 printk(BIOS_DEBUG, "LAN power off\n");
 116                 reg32 = inl(DEFAULT_GPIOBASE + GP_LVL);
 117                 reg32 |= (1 << 24);                     // Disable LAN Power
 118                 outl(reg32, DEFAULT_GPIOBASE + GP_LVL);
 119                 break;
 120         case 0xdf:
 121                 printk(BIOS_DEBUG, "RF enable\n");
 122                 // TODO
 123                 break;
 124         case 0xe0:
 125                 printk(BIOS_DEBUG, "Get RTC wake flag\n");
 126                 // TODO
 127                 break;
 128         case 0xe1:
 129                 printk(BIOS_DEBUG, "Hotkey function\n");
 130                 // TODO
 131                 break;
 132         case 0xe3:
 133                 printk(BIOS_DEBUG, "ECO disable\n");
 134                 // TODO
 135                 break;
 136         default:
 137                 return 0;
 138         }
 139
 140         /* gnvs->smif:
 141          *   On success, the IO Trap Handler returns 0
 142          *   On failure, the IO Trap Handler returns a value != 0
 143          */
 144         gnvs->smif = 0;
 145         return 1;
 146 }
 147
 148 static void mainboard_smi_hotkey(u8 hotkey)
 149 {
 150         u8 reg8;
 151
 152         switch (hotkey) {
 153         case 0x3b: break; // Fn+F1
 154         case 0x3c: break; // Fn+F2
 155         case 0x3d: break; // Fn+F3
 156         case 0x3e: break; // Fn+F4
 157         case 0x3f: break; // Fn+F5
 158         case 0x40:        // Fn+F6 (Decrease Display Brightness)
 159                    reg8 = ec_read(0x17);
 160                    reg8 = (reg8 > 8) ? (reg8 - 8) : 0;
 161                    ec_write(0x17, reg8);
 162                    return;
 163         case 0x41:        // Fn+F7 (Increase Display Brightness)
 164                    reg8 = ec_read(0x17);
 165                    reg8 += 8;
 166                    reg8 = (reg8 >= MAX_LCD_BRIGHTNESS) ? MAX_LCD_BRIGHTNESS : reg8;
 167                    ec_write(0x17, reg8);
 168                    return;
 169         case 0x42: break; // Fn+F8
 170         case 0x43: break; // Fn+F9
 171         case 0x44: break; // Fn+F10
 172         case 0x57: break; // Fn+F11
 173         case 0x58: break; // Fn+F12
 174         }
 175         printk(BIOS_DEBUG, "EC hotkey: %02x\n", hotkey);
 176 }
 177
 178 void mainboard_smi_gpi(u32 gpi_sts)
 179 {
 180         u8 source, hotkey;
 181         send_ec_oem_command(0x5c);
 182         source = recv_ec_oem_data();
 183
 184         switch (source) {
 185         case 0:
 186                 // Some kind of ACK?
 187                 break;
 188         case 1:
 189                 send_ec_oem_command(0x59);
 190                 hotkey = recv_ec_oem_data();
 191                 mainboard_smi_hotkey(hotkey);
 192                 break;
 193         default:
 194                 printk(BIOS_DEBUG, "EC SMI source: %02x\n", source);
 195         }
 196 }