hwmon: (f71882fg) Prepare for adding F8000 support

This patch is a preparation patch for adding F8000 support to the f71882fg
driver. If you look at the register addresses and esp, the bits used for
the temperature channels, then you will notice that it appears that they
start at 1 in a system meant to start at 0. As the F8000 actually uses the 0
addresses and bits, this patch changes the f71882fg driver to take 4
temperatures numbered 0-3 in to account, using 1-3 in this new scheme for
the temperatures actually present in the F718x2FG.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

drivers/hwmon/f71882fg.c

@@ -63,9 +63,9 @@
 #define F71882FG_REG_FAN_STATUS		0x92
 #define F71882FG_REG_FAN_BEEP		0x93
 
-#define F71882FG_REG_TEMP(nr)		(0x72 + 2 * (nr))
-#define F71882FG_REG_TEMP_OVT(nr)	(0x82 + 2 * (nr))
-#define F71882FG_REG_TEMP_HIGH(nr)	(0x83 + 2 * (nr))
+#define F71882FG_REG_TEMP(nr)		(0x70 + 2 * (nr))
+#define F71882FG_REG_TEMP_OVT(nr)	(0x80 + 2 * (nr))
+#define F71882FG_REG_TEMP_HIGH(nr)	(0x81 + 2 * (nr))
 #define F71882FG_REG_TEMP_STATUS	0x62
 #define F71882FG_REG_TEMP_BEEP		0x63
 #define F71882FG_REG_TEMP_HYST1		0x6C
@@ -138,11 +138,14 @@ struct f71882fg_data {
 	u16	fan_full_speed[4];
 	u8	fan_status;
 	u8	fan_beep;
-	u8	temp[3];
-	u8	temp_ovt[3];
-	u8	temp_high[3];
-	u8	temp_hyst[3];
-	u8	temp_type[3];
+	/* Note: all models have only 3 temperature channels, but on some
+	   they are addressed as 0-2 and on others as 1-3, so for coding
+	   convenience we reserve space for 4 channels */
+	u8	temp[4];
+	u8	temp_ovt[4];
+	u8	temp_high[4];
+	u8	temp_hyst[4];
+	u8	temp_type[4];
 	u8	temp_status;
 	u8	temp_beep;
 	u8	temp_diode_open;
@@ -264,48 +267,48 @@ static struct sensor_device_attribute_2 f718x2fg_in_temp_attr[] = {
 	SENSOR_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 0, 6),
 	SENSOR_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 0, 7),
 	SENSOR_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 0, 8),
-	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
+	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 1),
 	SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
-		store_temp_max, 0, 0),
+		store_temp_max, 0, 1),
 	SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
-		store_temp_max_hyst, 0, 0),
+		store_temp_max_hyst, 0, 1),
 	SENSOR_ATTR_2(temp1_crit, S_IRUGO|S_IWUSR, show_temp_crit,
-		store_temp_crit, 0, 0),
+		store_temp_crit, 0, 1),
 	SENSOR_ATTR_2(temp1_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
-		0, 0),
-	SENSOR_ATTR_2(temp1_type, S_IRUGO, show_temp_type, NULL, 0, 0),
+		0, 1),
+	SENSOR_ATTR_2(temp1_type, S_IRUGO, show_temp_type, NULL, 0, 1),
 	SENSOR_ATTR_2(temp1_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 0),
-	SENSOR_ATTR_2(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 0),
-	SENSOR_ATTR_2(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0, 0),
-	SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 1),
+		store_temp_beep, 0, 1),
+	SENSOR_ATTR_2(temp1_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 1),
+	SENSOR_ATTR_2(temp1_fault, S_IRUGO, show_temp_fault, NULL, 0, 1),
+	SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0, 2),
 	SENSOR_ATTR_2(temp2_max, S_IRUGO|S_IWUSR, show_temp_max,
-		store_temp_max, 0, 1),
+		store_temp_max, 0, 2),
 	SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
-		store_temp_max_hyst, 0, 1),
+		store_temp_max_hyst, 0, 2),
 	SENSOR_ATTR_2(temp2_crit, S_IRUGO|S_IWUSR, show_temp_crit,
-		store_temp_crit, 0, 1),
+		store_temp_crit, 0, 2),
 	SENSOR_ATTR_2(temp2_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
-		0, 1),
-	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 1),
+		0, 2),
+	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 2),
 	SENSOR_ATTR_2(temp2_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 1),
-	SENSOR_ATTR_2(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 1),
-	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 1),
-	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 2),
+		store_temp_beep, 0, 2),
+	SENSOR_ATTR_2(temp2_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 2),
+	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
+	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 3),
 	SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
-		store_temp_max, 0, 2),
+		store_temp_max, 0, 3),
 	SENSOR_ATTR_2(temp3_max_hyst, S_IRUGO|S_IWUSR, show_temp_max_hyst,
-		store_temp_max_hyst, 0, 2),
+		store_temp_max_hyst, 0, 3),
 	SENSOR_ATTR_2(temp3_crit, S_IRUGO|S_IWUSR, show_temp_crit,
-		store_temp_crit, 0, 2),
+		store_temp_crit, 0, 3),
 	SENSOR_ATTR_2(temp3_crit_hyst, S_IRUGO, show_temp_crit_hyst, NULL,
-		0, 2),
-	SENSOR_ATTR_2(temp3_type, S_IRUGO, show_temp_type, NULL, 0, 2),
+		0, 3),
+	SENSOR_ATTR_2(temp3_type, S_IRUGO, show_temp_type, NULL, 0, 3),
 	SENSOR_ATTR_2(temp3_beep, S_IRUGO|S_IWUSR, show_temp_beep,
-		store_temp_beep, 0, 2),
-	SENSOR_ATTR_2(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 2),
-	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
+		store_temp_beep, 0, 3),
+	SENSOR_ATTR_2(temp3_alarm, S_IRUGO, show_temp_alarm, NULL, 0, 3),
+	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 3),
 };
 
 static struct sensor_device_attribute_2 f71882fg_in_temp_attr[] = {
@@ -678,7 +681,7 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 		}
 
 		/* Get High & boundary temps*/
-		for (nr = 0; nr < 3; nr++) {
+		for (nr = 1; nr < 4; nr++) {
 			data->temp_ovt[nr] = f71882fg_read8(data,
 						F71882FG_REG_TEMP_OVT(nr));
 			data->temp_high[nr] = f71882fg_read8(data,
@@ -686,25 +689,25 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 		}
 
 		/* Have to hardcode hyst*/
-		data->temp_hyst[0] = f71882fg_read8(data,
+		data->temp_hyst[1] = f71882fg_read8(data,
 						F71882FG_REG_TEMP_HYST1) >> 4;
 		/* Hyst temps 2 & 3 stored in same register */
 		reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23);
-		data->temp_hyst[1] = reg & 0x0F;
-		data->temp_hyst[2] = reg >> 4;
+		data->temp_hyst[2] = reg & 0x0F;
+		data->temp_hyst[3] = reg >> 4;
 
 		/* Have to hardcode type, because temp1 is special */
 		reg  = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
 		reg2 = f71882fg_read8(data, F71882FG_REG_PECI);
 		if ((reg2 & 0x03) == 0x01)
-			data->temp_type[0] = 6 /* PECI */;
+			data->temp_type[1] = 6 /* PECI */;
 		else if ((reg2 & 0x03) == 0x02)
-			data->temp_type[0] = 5 /* AMDSI */;
+			data->temp_type[1] = 5 /* AMDSI */;
 		else
-			data->temp_type[0] = (reg & 0x02) ? 2 : 4;
+			data->temp_type[1] = (reg & 0x02) ? 2 : 4;
 
-		data->temp_type[1] = (reg & 0x04) ? 2 : 4;
-		data->temp_type[2] = (reg & 0x08) ? 2 : 4;
+		data->temp_type[2] = (reg & 0x04) ? 2 : 4;
+		data->temp_type[3] = (reg & 0x08) ? 2 : 4;
 
 		data->temp_beep = f71882fg_read8(data, F71882FG_REG_TEMP_BEEP);
 
@@ -763,7 +766,7 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 						F71882FG_REG_TEMP_STATUS);
 		data->temp_diode_open = f71882fg_read8(data,
 						F71882FG_REG_TEMP_DIODE_OPEN);
-		for (nr = 0; nr < 3; nr++)
+		for (nr = 1; nr < 4; nr++)
 			data->temp[nr] = f71882fg_read8(data,
 						F71882FG_REG_TEMP(nr));
 
@@ -1032,19 +1035,19 @@ static ssize_t store_temp_max_hyst(struct device *dev, struct device_attribute
 
 	/* convert value to register contents */
 	switch (nr) {
-		case 0:
-			val = val << 4;
-			break;
 		case 1:
-			val = val | (data->temp_hyst[2] << 4);
+			val = val << 4;
 			break;
 		case 2:
-			val = data->temp_hyst[1] | (val << 4);
+			val = val | (data->temp_hyst[3] << 4);
+			break;
+		case 3:
+			val = data->temp_hyst[2] | (val << 4);
 			break;
 	}
 
-	f71882fg_write8(data, nr ? F71882FG_REG_TEMP_HYST23 :
-		F71882FG_REG_TEMP_HYST1, val);
+	f71882fg_write8(data, (nr <= 1) ? F71882FG_REG_TEMP_HYST1 :
+		F71882FG_REG_TEMP_HYST23, val);
 
 store_temp_max_hyst_exit:
 	mutex_unlock(&data->update_lock);
@@ -1103,7 +1106,7 @@ static ssize_t show_temp_beep(struct device *dev, struct device_attribute
 	struct f71882fg_data *data = f71882fg_update_device(dev);
 	int nr = to_sensor_dev_attr_2(devattr)->index;
 
-	if (data->temp_beep & (1 << (nr + 1)))
+	if (data->temp_beep & (1 << nr))
 		return sprintf(buf, "1\n");
 	else
 		return sprintf(buf, "0\n");
@@ -1118,9 +1121,9 @@ static ssize_t store_temp_beep(struct device *dev, struct device_attribute
 
 	mutex_lock(&data->update_lock);
 	if (val)
-		data->temp_beep |= 1 << (nr + 1);
+		data->temp_beep |= 1 << nr;
 	else
-		data->temp_beep &= ~(1 << (nr + 1));
+		data->temp_beep &= ~(1 << nr);
 
 	f71882fg_write8(data, F71882FG_REG_TEMP_BEEP, data->temp_beep);
 	mutex_unlock(&data->update_lock);
@@ -1134,7 +1137,7 @@ static ssize_t show_temp_alarm(struct device *dev, struct device_attribute
 	struct f71882fg_data *data = f71882fg_update_device(dev);
 	int nr = to_sensor_dev_attr_2(devattr)->index;
 
-	if (data->temp_status & (1 << (nr + 1)))
+	if (data->temp_status & (1 << nr))
 		return sprintf(buf, "1\n");
 	else
 		return sprintf(buf, "0\n");
@@ -1146,7 +1149,7 @@ static ssize_t show_temp_fault(struct device *dev, struct device_attribute
 	struct f71882fg_data *data = f71882fg_update_device(dev);
 	int nr = to_sensor_dev_attr_2(devattr)->index;
 
-	if (data->temp_diode_open & (1 << (nr + 1)))
+	if (data->temp_diode_open & (1 << nr))
 		return sprintf(buf, "1\n");
 	else
 		return sprintf(buf, "0\n");