drivers/i2c/w83793: Use devicetree.cb to set additional values

This allows devicetree.cb to set:
Minimum PWM values
Temperature sensor source
Voltage sensor high/low limits
Fan pin routing
Default PWM values
Manual PWM values per-fan

Change-Id: I3a321406a26ae01a121289d24b41c9f988dd6f30
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: http://review.coreboot.org/8502
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

src/drivers/i2c/w83793/chip.h

@@ -1,13 +1,65 @@
 struct drivers_i2c_w83793_config {
 	u8 mfc;
 	u8 fanin;
+	u8 fanin_sel;
 	u8 peci_agent_conf;
-	u8 tcase0;
+	u8 tcase0;			/* °C */
-	u8 tcase1;
+	u8 tcase1;			/* °C */
-	u8 tcase2;
+	u8 tcase2;			/* °C */
-	u8 tcase3;
+	u8 tcase3;			/* °C */
 	u8 tr_enable;
-	u8 critical_temperature;
+	u8 td_mode_select;
+	u8 critical_temperature;	/* °C */
+
+	u32 vcorea_high_limit_mv;	/* mV */
+	u32 vcorea_low_limit_mv;	/* mV */
+	u32 vcoreb_high_limit_mv;	/* mV */
+	u32 vcoreb_low_limit_mv;	/* mV */
+	u32 vtt_high_limit_mv;		/* mV */
+	u32 vtt_low_limit_mv;		/* mV */
+	u32 vsen1_high_limit_mv;	/* mV */
+	u32 vsen1_low_limit_mv;		/* mV */
+	u32 vsen2_high_limit_mv;	/* mV */
+	u32 vsen2_low_limit_mv;		/* mV */
+	u32 vsen3_high_limit_mv;	/* mV */
+	u32 vsen3_low_limit_mv;		/* mV */
+	u32 vsen4_high_limit_mv;	/* mV */
+	u32 vsen4_low_limit_mv;		/* mV */
+	u32 vdd_high_limit_mv;		/* mV */
+	u32 vdd_low_limit_mv;		/* mV */
+	u32 vsb_high_limit_mv;		/* mV */
+	u32 vsb_low_limit_mv;		/* mV */
+	u32 vbat_high_limit_mv;		/* mV */
+	u32 vbat_low_limit_mv;		/* mV */
+
+	u8 td1_critical_temperature;	/* °C */
+	u8 td1_critical_hysteresis;	/* °C */
+	u8 td1_warning_temperature;	/* °C */
+	u8 td1_warning_hysteresis;	/* °C */
+	u8 td2_critical_temperature;	/* °C */
+	u8 td2_critical_hysteresis;	/* °C */
+	u8 td2_warning_temperature;	/* °C */
+	u8 td2_warning_hysteresis;	/* °C */
+	u8 td3_critical_temperature;	/* °C */
+	u8 td3_critical_hysteresis;	/* °C */
+	u8 td3_warning_temperature;	/* °C */
+	u8 td3_warning_hysteresis;	/* °C */
+	u8 td4_critical_temperature;	/* °C */
+	u8 td4_critical_hysteresis;	/* °C */
+	u8 td4_warning_temperature;	/* °C */
+	u8 td4_warning_hysteresis;	/* °C */
+	u8 tr1_critical_temperature;	/* °C */
+	u8 tr1_critical_hysteresis;	/* °C */
+	u8 tr1_warning_temperature;	/* °C */
+	u8 tr1_warning_hysteresis;	/* °C */
+	u8 tr2_critical_temperature;	/* °C */
+	u8 tr2_critical_hysteresis;	/* °C */
+	u8 tr2_warning_temperature;	/* °C */
+	u8 tr2_warning_hysteresis;	/* °C */
+
+	u8 fanctrl1;
+	u8 fanctrl2;
+	u8 first_valid_fan_number;
 
 	u8 td1_fan_select;
 	u8 td2_fan_select;
@@ -16,4 +68,24 @@ struct drivers_i2c_w83793_config {
 
 	u8 tr1_fan_select;
 	u8 tr2_fan_select;
+
+	u8 fan1_nonstop;		/* % of full speed (0-100) */
+	u8 fan2_nonstop;		/* % of full speed (0-100) */
+	u8 fan3_nonstop;		/* % of full speed (0-100) */
+	u8 fan4_nonstop;		/* % of full speed (0-100) */
+	u8 fan5_nonstop;		/* % of full speed (0-100) */
+	u8 fan6_nonstop;		/* % of full speed (0-100) */
+	u8 fan7_nonstop;		/* % of full speed (0-100) */
+	u8 fan8_nonstop;		/* % of full speed (0-100) */
+
+	u8 default_speed;		/* % of full speed (0-100) */
+
+	u8 fan1_duty;			/* % of full speed (0-100) */
+	u8 fan2_duty;			/* % of full speed (0-100) */
+	u8 fan3_duty;			/* % of full speed (0-100) */
+	u8 fan4_duty;			/* % of full speed (0-100) */
+	u8 fan5_duty;			/* % of full speed (0-100) */
+	u8 fan6_duty;			/* % of full speed (0-100) */
+	u8 fan7_duty;			/* % of full speed (0-100) */
+	u8 fan8_duty;			/* % of full speed (0-100) */
 };

src/drivers/i2c/w83793/w83793.c

@@ -1,6 +1,7 @@
 /*
  * This file is part of the coreboot project.
  *
+ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
  * Copyright (C) 2012 Advanced Micro Devices, Inc.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -93,6 +94,31 @@ static int w83793_tr_fan_level(struct device *dev, int fan, const char *level)
 	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)
 {
@@ -121,8 +147,11 @@ static void w83793_init(struct device *dev)
 	/* FANIN_Ctrl */
 	smbus_write_byte(dev, 0x5c, config->fanin);
 
-	/* Temperature reported by PECI */
+	/* FANIN_Sel */
-	smbus_write_byte(dev, 0x5e, 0xff);
+	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 */
@@ -135,12 +164,63 @@ static void w83793_init(struct device *dev)
 	/* PECI Reportstyle */
 	smbus_write_byte(dev, 0xd5, 0x00);
 
-	for (i = 0; i < 9; i++)
+	/* 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, 0x00);
+	smbus_write_byte(dev, 0xb0, config->fanctrl1);
-	smbus_write_byte(dev, 0xb1, 0x00);
+	smbus_write_byte(dev, 0xb1, config->fanctrl2);
 
 	/* FAN Uptime */
 	smbus_write_byte(dev, 0xc3, 0x02);
@@ -157,6 +237,19 @@ static void w83793_init(struct device *dev)
 	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);
 
@@ -177,14 +270,14 @@ static void w83793_init(struct device *dev)
 	smbus_write_byte(dev, 0x09, 0xaa);
 
 	/* FanNonStop */
-	smbus_write_byte(dev, 0x18, 0x1d);
+	smbus_write_byte(dev, 0x18, fan_pct_to_cfg_val(config->fan1_nonstop));
-	smbus_write_byte(dev, 0x19, 0x04);
+	smbus_write_byte(dev, 0x19, fan_pct_to_cfg_val(config->fan2_nonstop));
-	smbus_write_byte(dev, 0x1a, 0x04);
+	smbus_write_byte(dev, 0x1a, fan_pct_to_cfg_val(config->fan3_nonstop));
-	smbus_write_byte(dev, 0x1b, 0x04);
+	smbus_write_byte(dev, 0x1b, fan_pct_to_cfg_val(config->fan4_nonstop));
-	smbus_write_byte(dev, 0x1c, 0x04);
+	smbus_write_byte(dev, 0x1c, fan_pct_to_cfg_val(config->fan5_nonstop));
-	smbus_write_byte(dev, 0x1d, 0x04);
+	smbus_write_byte(dev, 0x1d, fan_pct_to_cfg_val(config->fan6_nonstop));
-	smbus_write_byte(dev, 0x1e, 0x04);
+	smbus_write_byte(dev, 0x1e, fan_pct_to_cfg_val(config->fan7_nonstop));
-	smbus_write_byte(dev, 0x1f, 0x04);
+	smbus_write_byte(dev, 0x1f, fan_pct_to_cfg_val(config->fan8_nonstop));
 
 	/* FanStart */
 	smbus_write_byte(dev, 0x20, 0x08);