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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/io.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pnp.h>
#include "chip.h"
#include "fintek_internal.h"
/*
* The Fintek F71869AD Super I/O Hardware Monitor permits the configuration of
* three fans individually, where fan1 is typically taken as the CPU fan. Each
* fan is controlled by the relation:
*
* Tfan? = Tnow + (Ta - Tb)*Ct
*
* Parameters in this relation are specified in the devicetree.cb.
*/
/*
* Register CR01 ~ CR03 -> Configuration Registers
* Register CR0A ~ CR0F -> PECI/TSI Control Register
* Register CR10 ~ CR37 -> Voltage Setting Register
* Register CR40 ~ CR4E -> PECI 3.0 Command and Register
* Register CR60 ~ CR8E -> Temperature Setting Register
* Register CR90 ~ CRDF -> Fan Control Setting Register
*/
#define HWM_SMBUS_ADDR 0x08
#define HWM_SMBUS_CONTROL_REG 0x0A
#define HWM_FAN_TYPE_SEL_REG 0x94
#define HWM_FAN1_TEMP_ADJ_RATE_REG 0x95
#define HWM_FAN_MODE_SEL_REG 0x96
#define HWM_FAN_FAULT_TIME_REG 0x9F /* bit7 FAN_PROG_SEL */
#define HWM_FAN1_IDX_RPM_MODE 0xA3
#define HWM_FAN1_SEG1_SPEED_COUNT 0xAA
#define HWM_FAN1_SEG2_SPEED_COUNT 0xAB
#define HWM_FAN1_SEG3_SPEED_COUNT 0xAC
#define HWM_FAN1_TEMP_MAP_SEL 0xAF
/* note: multifunc registers need to be tweaked before here */
void f71869ad_hwm_init(struct device *dev)
{
const struct superio_fintek_f71869ad_config *conf = dev->chip_info;
struct resource *res = find_resource(dev, PNP_IDX_IO0);
if (!res) {
printk(BIOS_WARNING, "Super I/O HWM: No HWM resource found.\n");
return;
}
u16 port = res->base; /* data-sheet default base = 0x229 */
printk(BIOS_INFO,
"Fintek F71869AD Super I/O HWM: Initializing Hardware Monitor..\n");
printk(BIOS_DEBUG,
"Fintek F71869AD Super I/O HWM: Base Address at 0x%x\n", port);
pnp_enter_conf_mode(dev);
pnp_set_logical_device(dev);
/* Fintek F71869AD HWM (ordered) programming sequence. */
/* SMBus Address p.53 */
pnp_write_index(port, HWM_SMBUS_ADDR, conf->hwm_smbus_address);
/* Configure pins 57/58 as PECI_REQ#/PECI (AMD_TSI) p.54 */
pnp_write_index(port, HWM_SMBUS_CONTROL_REG, conf->hwm_smbus_control_reg);
/* Tfan1 = Tnow + (Ta - Tb)*Ct where, */
/* FAN1_TEMP_SEL_DIG, FAN1_TEMP_SEL (Tnow) set to come from CR7Ah p.73 */
pnp_write_index(port, HWM_FAN1_TEMP_MAP_SEL, conf->hwm_fan1_temp_map_sel);
/* set FAN_PROG_SEL = 1 */
pnp_write_index(port, HWM_FAN_FAULT_TIME_REG, 0x8a);
/* FAN1_BASE_TEMP (Tb) set when FAN_PROG_SEL=1, p.64-65 */
pnp_write_index(port, HWM_FAN_TYPE_SEL_REG, conf->hwm_fan_type_sel_reg);
/* set TFAN1_ADJ_SEL (Ta) p.67 to use CR7Ah p.61 */
pnp_write_index(port, HWM_FAN_MODE_SEL_REG, conf->hwm_fan_mode_sel_reg);
/* TFAN1_ADJ_{UP,DOWN}_RATE (Ct=1/4 up & down) in 0x95 when FAN_PROG_SEL =
1, p.88 */
pnp_write_index(port, HWM_FAN1_TEMP_ADJ_RATE_REG, conf->hwm_fan1_temp_adj_rate_reg);
/* set FAN_PROG_SEL = 0 */
pnp_write_index(port, HWM_FAN_FAULT_TIME_REG, 0x0a);
/* FAN1 RPM mode p.70 */
pnp_write_index(port, HWM_FAN1_IDX_RPM_MODE, conf->hwm_fan1_idx_rpm_mode);
/* FAN1 Segment X Speed Count */
pnp_write_index(port, HWM_FAN1_SEG1_SPEED_COUNT, conf->hwm_fan1_seg1_speed_count);
pnp_write_index(port, HWM_FAN1_SEG2_SPEED_COUNT, conf->hwm_fan1_seg2_speed_count);
pnp_write_index(port, HWM_FAN1_SEG3_SPEED_COUNT, conf->hwm_fan1_seg3_speed_count);
pnp_exit_conf_mode(dev);
}
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