| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* This file is part of the coreboot project. */ |
| |
| #include <stdint.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include "w83793.h" |
| #include <device/smbus.h> |
| #include "chip.h" |
| |
| static int w83793_fan_limit(struct device *dev, int fan, uint16_t limit) |
| { |
| return smbus_write_byte(dev, 0x90 + fan * 2, limit >> 8) || |
| smbus_write_byte(dev, 0x91 + fan * 2, limit & 0xff); |
| } |
| |
| static int w83793_bank(struct device *dev, int bank) |
| { |
| return smbus_write_byte(dev, 0, bank); |
| } |
| |
| static int w83793_td_level(struct device *dev, int fan, const char *level) |
| { |
| fan *= 0x10; |
| |
| smbus_write_byte(dev, 0x30 + fan, level[0]); |
| smbus_write_byte(dev, 0x31 + fan, level[1]); |
| smbus_write_byte(dev, 0x32 + fan, level[2]); |
| smbus_write_byte(dev, 0x33 + fan, level[3]); |
| smbus_write_byte(dev, 0x34 + fan, level[4]); |
| smbus_write_byte(dev, 0x35 + fan, level[5]); |
| smbus_write_byte(dev, 0x36 + fan, level[6]); |
| return 0; |
| } |
| |
| static int w83793_tr_level(struct device *dev, int fan, const char *level) |
| { |
| fan *= 0x10; |
| |
| smbus_write_byte(dev, 0x70 + fan, level[0]); |
| smbus_write_byte(dev, 0x71 + fan, level[1]); |
| smbus_write_byte(dev, 0x72 + fan, level[2]); |
| smbus_write_byte(dev, 0x73 + fan, level[3]); |
| smbus_write_byte(dev, 0x74 + fan, level[4]); |
| smbus_write_byte(dev, 0x75 + fan, level[5]); |
| smbus_write_byte(dev, 0x76 + fan, level[6]); |
| return 0; |
| } |
| |
| |
| static int w83793_td_fan_level(struct device *dev, int fan, const char *level) |
| { |
| fan *= 0x10; |
| |
| smbus_write_byte(dev, 0x38 + fan, level[0]); |
| smbus_write_byte(dev, 0x39 + fan, level[1]); |
| smbus_write_byte(dev, 0x3a + fan, level[2]); |
| smbus_write_byte(dev, 0x3b + fan, level[3]); |
| smbus_write_byte(dev, 0x3c + fan, level[4]); |
| smbus_write_byte(dev, 0x3d + fan, level[5]); |
| smbus_write_byte(dev, 0x3e + fan, level[6]); |
| return 0; |
| } |
| |
| static int w83793_tr_fan_level(struct device *dev, int fan, const char *level) |
| { |
| fan *= 0x10; |
| |
| smbus_write_byte(dev, 0x78 + fan, level[0]); |
| smbus_write_byte(dev, 0x79 + fan, level[1]); |
| smbus_write_byte(dev, 0x7a + fan, level[2]); |
| smbus_write_byte(dev, 0x7b + fan, level[3]); |
| smbus_write_byte(dev, 0x7c + fan, level[4]); |
| smbus_write_byte(dev, 0x7d + fan, level[5]); |
| smbus_write_byte(dev, 0x7e + fan, level[6]); |
| return 0; |
| } |
| |
| static uint8_t millivolts_to_limit_value_type1(int millivolts) |
| { |
| /* Datasheet v1.4 page 64 (VCoreA, VCoreB, Vtt Limit) */ |
| return ((millivolts * 125) / 1000); |
| } |
| |
| static uint8_t millivolts_to_limit_value_type2(int millivolts) |
| { |
| /* Datasheet v1.4 page 64 (VSEN1, VEN2, VSEN3) */ |
| return ((millivolts * 625) / 10000); |
| } |
| |
| static uint8_t millivolts_to_limit_value_type3(int millivolts) |
| { |
| /* Datasheet v1.4 page 64 (5VDD, 5VSB) */ |
| return ((((millivolts * 10) + 1500) * 417) / 10000); |
| } |
| |
| static uint8_t fan_pct_to_cfg_val(uint8_t percent) |
| { |
| uint8_t cfg = (((unsigned int)percent * 10000) / 15873); |
| if (cfg > 0x3f) |
| cfg = 0x3f; |
| return cfg; |
| } |
| |
| static void w83793_init(struct device *dev) |
| { |
| struct drivers_i2c_w83793_config *config = dev->chip_info; |
| uint16_t id; |
| int i; |
| |
| if (w83793_bank(dev, 0)) |
| printk(BIOS_ERR, "%s: failed\n", __func__); |
| |
| if (!config) |
| return; |
| |
| id = smbus_read_byte(dev, 0x0d); |
| w83793_bank(dev, 0x80); |
| id |= smbus_read_byte(dev, 0x0d) << 8; |
| printk(BIOS_ERR, "ID: %04x\n", id); |
| |
| /* reset configuration */ |
| smbus_write_byte(dev, 0x40, 0x80); |
| smbus_write_byte(dev, 0x51, 0x06); |
| |
| /* Multi function control */ |
| smbus_write_byte(dev, 0x58, config->mfc); |
| |
| /* FANIN_Ctrl */ |
| smbus_write_byte(dev, 0x5c, config->fanin); |
| |
| /* FANIN_Sel */ |
| smbus_write_byte(dev, 0x5d, config->fanin_sel); |
| |
| /* Temperature source */ |
| smbus_write_byte(dev, 0x5e, config->td_mode_select); |
| /* TR monitor enable */ |
| smbus_write_byte(dev, 0x5f, config->tr_enable); |
| /* PECI Agent configuration */ |
| smbus_write_byte(dev, 0xd0, config->peci_agent_conf); |
| /* TCase */ |
| smbus_write_byte(dev, 0xd1, config->tcase0); |
| smbus_write_byte(dev, 0xd2, config->tcase1); |
| smbus_write_byte(dev, 0xd3, config->tcase2); |
| smbus_write_byte(dev, 0xd4, config->tcase3); |
| /* PECI Reportstyle */ |
| smbus_write_byte(dev, 0xd5, 0x00); |
| |
| /* Voltage high/low limits */ |
| smbus_write_byte(dev, 0x60, millivolts_to_limit_value_type1(config->vcorea_high_limit_mv)); |
| smbus_write_byte(dev, 0x61, millivolts_to_limit_value_type1(config->vcorea_low_limit_mv)); |
| smbus_write_byte(dev, 0x62, millivolts_to_limit_value_type1(config->vcoreb_high_limit_mv)); |
| smbus_write_byte(dev, 0x63, millivolts_to_limit_value_type1(config->vcoreb_low_limit_mv)); |
| smbus_write_byte(dev, 0x64, millivolts_to_limit_value_type1(config->vtt_high_limit_mv)); |
| smbus_write_byte(dev, 0x65, millivolts_to_limit_value_type1(config->vtt_low_limit_mv)); |
| smbus_write_byte(dev, 0x6a, millivolts_to_limit_value_type2(config->vsen1_high_limit_mv)); |
| smbus_write_byte(dev, 0x6b, millivolts_to_limit_value_type2(config->vsen1_low_limit_mv)); |
| smbus_write_byte(dev, 0x6c, millivolts_to_limit_value_type2(config->vsen2_high_limit_mv)); |
| smbus_write_byte(dev, 0x6d, millivolts_to_limit_value_type2(config->vsen2_low_limit_mv)); |
| smbus_write_byte(dev, 0x6e, millivolts_to_limit_value_type2(config->vsen3_high_limit_mv)); |
| smbus_write_byte(dev, 0x6f, millivolts_to_limit_value_type2(config->vsen3_low_limit_mv)); |
| smbus_write_byte(dev, 0x70, millivolts_to_limit_value_type1(config->vsen4_high_limit_mv)); |
| smbus_write_byte(dev, 0x71, millivolts_to_limit_value_type1(config->vsen4_low_limit_mv)); |
| smbus_write_byte(dev, 0x72, millivolts_to_limit_value_type3(config->vdd_high_limit_mv)); |
| smbus_write_byte(dev, 0x73, millivolts_to_limit_value_type3(config->vdd_low_limit_mv)); |
| smbus_write_byte(dev, 0x74, millivolts_to_limit_value_type3(config->vsb_high_limit_mv)); |
| smbus_write_byte(dev, 0x75, millivolts_to_limit_value_type3(config->vsb_low_limit_mv)); |
| smbus_write_byte(dev, 0x76, millivolts_to_limit_value_type2(config->vbat_high_limit_mv)); |
| smbus_write_byte(dev, 0x77, millivolts_to_limit_value_type2(config->vbat_low_limit_mv)); |
| |
| /* Temperature high/low limits */ |
| smbus_write_byte(dev, 0x78, config->td1_critical_temperature); |
| smbus_write_byte(dev, 0x79, config->td1_critical_hysteresis); |
| smbus_write_byte(dev, 0x7a, config->td1_warning_temperature); |
| smbus_write_byte(dev, 0x7b, config->td1_warning_hysteresis); |
| smbus_write_byte(dev, 0x7c, config->td2_critical_temperature); |
| smbus_write_byte(dev, 0x7d, config->td2_critical_hysteresis); |
| smbus_write_byte(dev, 0x7e, config->td2_warning_temperature); |
| smbus_write_byte(dev, 0x7f, config->td2_warning_hysteresis); |
| smbus_write_byte(dev, 0x80, config->td3_critical_temperature); |
| smbus_write_byte(dev, 0x81, config->td3_critical_hysteresis); |
| smbus_write_byte(dev, 0x82, config->td3_warning_temperature); |
| smbus_write_byte(dev, 0x83, config->td3_warning_hysteresis); |
| smbus_write_byte(dev, 0x84, config->td4_critical_temperature); |
| smbus_write_byte(dev, 0x85, config->td4_critical_hysteresis); |
| smbus_write_byte(dev, 0x86, config->td4_warning_temperature); |
| smbus_write_byte(dev, 0x87, config->td4_warning_hysteresis); |
| smbus_write_byte(dev, 0x88, config->tr1_critical_temperature); |
| smbus_write_byte(dev, 0x89, config->tr1_critical_hysteresis); |
| smbus_write_byte(dev, 0x8a, config->tr1_warning_temperature); |
| smbus_write_byte(dev, 0x8b, config->tr1_warning_hysteresis); |
| smbus_write_byte(dev, 0x8c, config->tr2_critical_temperature); |
| smbus_write_byte(dev, 0x8d, config->tr2_critical_hysteresis); |
| smbus_write_byte(dev, 0x8e, config->tr2_warning_temperature); |
| smbus_write_byte(dev, 0x8f, config->tr2_warning_hysteresis); |
| |
| /* Set minimum FAN speeds before alarms will be set */ |
| for (i = 0; i < config->first_valid_fan_number; i++) |
| w83793_fan_limit(dev, i, 0x0); |
| for (i = config->first_valid_fan_number; i < 12; i++) |
| w83793_fan_limit(dev, i, 0x768); |
| |
| /* Fan output style control */ |
| smbus_write_byte(dev, 0xb0, config->fanctrl1); |
| smbus_write_byte(dev, 0xb1, config->fanctrl2); |
| |
| /* FAN Uptime */ |
| smbus_write_byte(dev, 0xc3, 0x02); |
| |
| /* FAN downtime */ |
| smbus_write_byte(dev, 0xc4, 0x03); |
| |
| /* ALL FAN critical temperature */ |
| smbus_write_byte(dev, 0xc5, config->critical_temperature); |
| |
| /* Temperature offset */ |
| smbus_write_byte(dev, 0xa8, 0xf9); |
| smbus_write_byte(dev, 0xa9, 0xf9); |
| smbus_write_byte(dev, 0xaa, 0xf9); |
| smbus_write_byte(dev, 0xab, 0xf9); |
| |
| /* Default FAN speed */ |
| smbus_write_byte(dev, 0xb2, fan_pct_to_cfg_val(config->default_speed)); |
| |
| /* Manual FAN speeds */ |
| smbus_write_byte(dev, 0xb3, fan_pct_to_cfg_val(config->fan1_duty)); |
| smbus_write_byte(dev, 0xb4, fan_pct_to_cfg_val(config->fan2_duty)); |
| smbus_write_byte(dev, 0xb5, fan_pct_to_cfg_val(config->fan3_duty)); |
| smbus_write_byte(dev, 0xb6, fan_pct_to_cfg_val(config->fan4_duty)); |
| smbus_write_byte(dev, 0xb7, fan_pct_to_cfg_val(config->fan5_duty)); |
| smbus_write_byte(dev, 0xb8, fan_pct_to_cfg_val(config->fan6_duty)); |
| smbus_write_byte(dev, 0xb9, fan_pct_to_cfg_val(config->fan7_duty)); |
| smbus_write_byte(dev, 0xba, fan_pct_to_cfg_val(config->fan8_duty)); |
| |
| /* BANK 2 */ |
| smbus_write_byte(dev, 0x00, 0x02); |
| |
| /* TD FAN select */ |
| smbus_write_byte(dev, 0x01, config->td1_fan_select); |
| smbus_write_byte(dev, 0x02, config->td2_fan_select); |
| smbus_write_byte(dev, 0x03, config->td3_fan_select); |
| smbus_write_byte(dev, 0x04, config->td4_fan_select); |
| |
| smbus_write_byte(dev, 0x05, config->tr1_fan_select); |
| smbus_write_byte(dev, 0x06, config->tr2_fan_select); |
| |
| /* FAN control mode */ |
| smbus_write_byte(dev, 0x07, 0x00); |
| |
| /* hysteresis tolerance */ |
| smbus_write_byte(dev, 0x08, 0xaa); |
| smbus_write_byte(dev, 0x09, 0xaa); |
| |
| /* FanNonStop */ |
| smbus_write_byte(dev, 0x18, fan_pct_to_cfg_val(config->fan1_nonstop)); |
| smbus_write_byte(dev, 0x19, fan_pct_to_cfg_val(config->fan2_nonstop)); |
| smbus_write_byte(dev, 0x1a, fan_pct_to_cfg_val(config->fan3_nonstop)); |
| smbus_write_byte(dev, 0x1b, fan_pct_to_cfg_val(config->fan4_nonstop)); |
| smbus_write_byte(dev, 0x1c, fan_pct_to_cfg_val(config->fan5_nonstop)); |
| smbus_write_byte(dev, 0x1d, fan_pct_to_cfg_val(config->fan6_nonstop)); |
| smbus_write_byte(dev, 0x1e, fan_pct_to_cfg_val(config->fan7_nonstop)); |
| smbus_write_byte(dev, 0x1f, fan_pct_to_cfg_val(config->fan8_nonstop)); |
| |
| /* FanStart */ |
| smbus_write_byte(dev, 0x20, 0x08); |
| smbus_write_byte(dev, 0x21, 0x08); |
| smbus_write_byte(dev, 0x22, 0x08); |
| smbus_write_byte(dev, 0x23, 0x08); |
| smbus_write_byte(dev, 0x24, 0x08); |
| smbus_write_byte(dev, 0x25, 0x08); |
| smbus_write_byte(dev, 0x26, 0x08); |
| smbus_write_byte(dev, 0x27, 0x08); |
| |
| for (i = 0; i < 4; i++) |
| w83793_td_level(dev, i, (const char[]){ 0x32, 0x32, 0x32, 0x32, 0x37, 0x41, 0x4b }); |
| |
| for (i = 0; i < 2; i++) |
| w83793_tr_level(dev, i, (const char[]){ 0x1e, 0x23, 0x28, 0x2d, 0x32, 0x37, 0x3c }); |
| |
| for (i = 0; i < 4; i++) |
| w83793_td_fan_level(dev, i, (const char[]){ 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x1d, 0x26 }); |
| |
| for (i = 0; i < 2; i++) |
| w83793_tr_fan_level(dev, i, (const char[]){ 0x08, 0x0c, 0x10, 0x18, 0x20, 0x30, 0x38 }); |
| |
| |
| smbus_write_byte(dev, 0x00, 0x00); |
| |
| /* start monitoring operation */ |
| smbus_write_byte(dev, 0x40, 0x09); |
| |
| } |
| |
| static struct device_operations w83793_operations = { |
| .read_resources = DEVICE_NOOP, |
| .set_resources = DEVICE_NOOP, |
| .init = w83793_init, |
| }; |
| |
| static void enable_dev(struct device *dev) |
| { |
| dev->ops = &w83793_operations; |
| } |
| |
| struct chip_operations drivers_i2c_w83793_ops = { |
| CHIP_NAME("Nuvoton W83793 Hardware Monitor") |
| .enable_dev = enable_dev, |
| }; |