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Commit c70a8c34 authored by Gong Jun's avatar Gong Jun Committed by Jean Delvare
Browse files

hwmon/w83793: Hide invalid VID readings 



Ignore the VID readings when the motherboard has not designed
the function.  

Signed-off-by: default avatarGong Jun <jgong@winbond.com>
Signed-off-by: default avatarRudolf Marek <r.marek@assembler.cz>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent c9294315

drivers/hwmon/w83793.c

+30 −3
Original line number Diff line number Diff line
@@ -205,6 +205,7 @@ struct w83793_data { 


	u8 has_pwm;

	u8 has_temp;

	u8 has_vid;

	u8 pwm_enable;		/* Register value, each Temp has 1 bit */

	u8 pwm_uptime;		/* Register value */

	u8 pwm_downtime;	/* Register value */
@@ -1025,9 +1026,12 @@ static struct sensor_device_attribute_2 w83793_left_pwm[] = { 
	SENSOR_ATTR_PWM(8),

};



static struct sensor_device_attribute_2 sda_single_files[] = {

static struct sensor_device_attribute_2 w83793_vid[] = {

	SENSOR_ATTR_2(cpu0_vid, S_IRUGO, show_vid, NULL, NOT_USED, 0),

	SENSOR_ATTR_2(cpu1_vid, S_IRUGO, show_vid, NULL, NOT_USED, 1),

};



static struct sensor_device_attribute_2 sda_single_files[] = {

	SENSOR_ATTR_2(vrm, S_IWUSR | S_IRUGO, show_vrm, store_vrm,

		      NOT_USED, NOT_USED),

	SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep,
@@ -1080,6 +1084,9 @@ static int w83793_detach_client(struct i2c_client *client) 
		for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)

			device_remove_file(dev, &sda_single_files[i].dev_attr);



		for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)

			device_remove_file(dev, &w83793_vid[i].dev_attr);



		for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)

			device_remove_file(dev, &w83793_left_fan[i].dev_attr);
@@ -1358,6 +1365,13 @@ static int w83793_detect(struct i2c_adapter *adapter, int address, int kind) 
	if (tmp & 0x02)

		data->has_temp |= 0x20;



	/* Detect the VID usage and ignore unused input */

	tmp = w83793_read_value(client, W83793_REG_MFC);

	if (!(tmp & 0x29))

		data->has_vid |= 0x1;	/* has VIDA */

	if (tmp & 0x80)

		data->has_vid |= 0x2;	/* has VIDB */



	/* Register sysfs hooks */

	for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) {

		err = device_create_file(dev,
@@ -1366,6 +1380,14 @@ static int w83793_detect(struct i2c_adapter *adapter, int address, int kind) 
			goto exit_remove;

	}



	for (i = 0; i < ARRAY_SIZE(w83793_vid); i++) {

		if (!(data->has_vid & (1 << i)))

			continue;

		err = device_create_file(dev, &w83793_vid[i].dev_attr);

		if (err)

			goto exit_remove;

	}



	for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) {

		err = device_create_file(dev, &sda_single_files[i].dev_attr);

		if (err)
@@ -1429,6 +1451,9 @@ static int w83793_detect(struct i2c_adapter *adapter, int address, int kind) 
	for (i = 0; i < ARRAY_SIZE(sda_single_files); i++)

		device_remove_file(dev, &sda_single_files[i].dev_attr);



	for (i = 0; i < ARRAY_SIZE(w83793_vid); i++)

		device_remove_file(dev, &w83793_vid[i].dev_attr);



	for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++)

		device_remove_file(dev, &w83793_left_fan[i].dev_attr);
@@ -1593,7 +1618,9 @@ static struct w83793_data *w83793_update_device(struct device *dev) 
	for (i = 0; i < ARRAY_SIZE(data->alarms); i++)

		data->alarms[i] =

		    w83793_read_value(client, W83793_REG_ALARM(i));

	if (data->has_vid & 0x01)

		data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA);

	if (data->has_vid & 0x02)

		data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB);

	w83793_update_nonvolatile(dev);

	data->last_updated = jiffies;