src/mainboard/amd/padmelon/fan_init.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2019 Richard Spiegel <richard.spiegel@silverbackltd.com>
   5  * Copyright (C) 2019 Silverback ltd.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; version 2 of 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 <bootstate.h>
  18 #include <superio/fintek/common/fan_control.h>
  19 #include <amdblocks/lpc.h>
  20 #include <device/pci_ops.h>
  21 #include <soc/pci_devs.h>
  22
  23 #define CPU_FAN         1
  24 #define SYSTEM_FAN      2
  25
  26 /* Boundaries in celsius, sections in percent */
  27 static u8 cpu_boudaries[FINTEK_BOUNDARIES_SIZE] = {
  28         80,
  29         65,
  30         50,
  31         35
  32 };
  33
  34 static u8 system_boudaries[FINTEK_BOUNDARIES_SIZE] = {
  35         70,
  36         55,
  37         40,
  38         25
  39 };
  40
  41 static u8 cpu_section[FINTEK_SECTIONS_SIZE] = {
  42         100,
  43         85,
  44         70,
  45         55,
  46         40
  47 };
  48
  49 static u8 system_section[FINTEK_SECTIONS_SIZE] = {
  50         100,
  51         85,
  52         70,
  53         55,
  54         40
  55 };
  56
  57 struct fintek_fan cpu_fan = {
  58         CPU_FAN,
  59         IGNORE_SENSOR,
  60         TEMP_SENSOR_DEFAULT,
  61         FAN_TEMP_TSI,
  62         FAN_TYPE_PWM_PUSH_PULL,
  63         FAN_MODE_DEFAULT,
  64         FAN_PWM_FREQ_23500,
  65         FAN_UP_RATE_10HZ,
  66         FAN_DOWN_RATE_10HZ,
  67         FAN_FOLLOW_INTERPOLATION,
  68         cpu_boudaries,
  69         cpu_section
  70 };
  71
  72 struct fintek_fan system_fan = {
  73         SYSTEM_FAN,
  74         EXTERNAL_SENSOR2,
  75         TEMP_SENSOR_BJT,
  76         FAN_TEMP_EXTERNAL_2,
  77         FAN_TYPE_DAC_POWER,
  78         FAN_MODE_DEFAULT,
  79         FAN_PWM_FREQ_23500,
  80         FAN_UP_RATE_10HZ,
  81         FAN_DOWN_RATE_10HZ,
  82         FAN_FOLLOW_INTERPOLATION,
  83         system_boudaries,
  84         system_section
  85 };
  86
  87 static void init_fan_control(void *unused)
  88 {
  89         u32 temp;
  90         /* Open a LPC IO access to 0x0220-0x0227 */
  91         temp = pci_read_config32(SOC_LPC_DEV, LPC_IO_PORT_DECODE_ENABLE);
  92         temp |= DECODE_ENABLE_SERIAL_PORT2;
  93         pci_write_config32(SOC_LPC_DEV, LPC_IO_PORT_DECODE_ENABLE, temp);
  94
  95         set_fan(&cpu_fan);
  96         set_fan(&system_fan);
  97 }
  98
  99 BOOT_STATE_INIT_ENTRY(BS_POST_DEVICE, BS_ON_ENTRY, init_fan_control, NULL);