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Commit d3766848 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (it87) Use single group and is_visible for miscellaneous attributes 



Use is_visible to determine if attributes should be generated or not.
This simplifies the code and reduces object size by about 120 bytes
on x86_64.

Tested-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 5c391261

drivers/hwmon/it87.c

+33 −48
Original line number Diff line number Diff line
@@ -471,6 +471,7 @@ struct it87_data { 
	unsigned long last_updated;	/* In jiffies */



	u16 in_scaled;		/* Internal voltage sensors are scaled */

	u16 in_internal;	/* Bitfield, internal sensors (for labels) */

	u16 has_in;		/* Bitfield, voltage sensors enabled */

	u8 in[10][3];		/* [nr][0]=in, [1]=min, [2]=max */

	u8 has_fan;		/* Bitfield, fans enabled */
@@ -480,6 +481,7 @@ struct it87_data { 
	u8 sensor;		/* Register value (IT87_REG_TEMP_ENABLE) */

	u8 extra;		/* Register value (IT87_REG_TEMP_EXTRA) */

	u8 fan_div[3];		/* Register encoding, shifted right */

	bool has_vid;		/* True if VID supported */

	u8 vid;			/* Register encoding, combined */

	u8 vrm;

	u32 alarms;		/* Register encoding, combined */
@@ -1879,15 +1881,37 @@ static const struct attribute_group it87_group_temp = { 
	.is_visible = it87_temp_is_visible,

};



static umode_t it87_is_visible(struct kobject *kobj,

			       struct attribute *attr, int index)

{

	struct device *dev = container_of(kobj, struct device, kobj);

	struct it87_data *data = dev_get_drvdata(dev);



	if ((index == 3 || index == 4) && !data->has_vid)

		return 0;



	if (index > 4 && !(data->in_internal & (1 << (index - 5))))

		return 0;



	return attr->mode;

}



static struct attribute *it87_attributes[] = {

	&dev_attr_alarms.attr,

	&sensor_dev_attr_intrusion0_alarm.dev_attr.attr,

	&dev_attr_name.attr,

	&dev_attr_vrm.attr,				/* 3 */

	&dev_attr_cpu0_vid.attr,			/* 4 */

	&sensor_dev_attr_in3_label.dev_attr.attr,	/* 5 .. 8 */

	&sensor_dev_attr_in7_label.dev_attr.attr,

	&sensor_dev_attr_in8_label.dev_attr.attr,

	&sensor_dev_attr_in9_label.dev_attr.attr,

	NULL

};



static const struct attribute_group it87_group = {

	.attrs = it87_attributes,

	.is_visible = it87_is_visible,

};



static umode_t it87_fan_is_visible(struct kobject *kobj,
@@ -2074,28 +2098,6 @@ static const struct attribute_group it87_group_auto_pwm = { 
	.is_visible = it87_auto_pwm_is_visible,

};



static struct attribute *it87_attributes_vid[] = {

	&dev_attr_vrm.attr,

	&dev_attr_cpu0_vid.attr,

	NULL

};



static const struct attribute_group it87_group_vid = {

	.attrs = it87_attributes_vid,

};



static struct attribute *it87_attributes_label[] = {

	&sensor_dev_attr_in3_label.dev_attr.attr,

	&sensor_dev_attr_in7_label.dev_attr.attr,

	&sensor_dev_attr_in8_label.dev_attr.attr,

	&sensor_dev_attr_in9_label.dev_attr.attr,

	NULL

};



static const struct attribute_group it87_group_label = {

	.attrs = it87_attributes_label,

};



/* SuperIO detection - will change isa_address if a chip is found */

static int __init it87_find(int sioaddr, unsigned short *address,

			    struct it87_sio_data *sio_data)
@@ -2460,18 +2462,12 @@ static int __init it87_find(int sioaddr, unsigned short *address, 


static void it87_remove_files(struct device *dev)

{

	struct it87_sio_data *sio_data = dev_get_platdata(dev);



	sysfs_remove_group(&dev->kobj, &it87_group);

	sysfs_remove_group(&dev->kobj, &it87_group_in);

	sysfs_remove_group(&dev->kobj, &it87_group_temp);

	sysfs_remove_group(&dev->kobj, &it87_group_fan);

	sysfs_remove_group(&dev->kobj, &it87_group_pwm);

	sysfs_remove_group(&dev->kobj, &it87_group_auto_pwm);



	if (!sio_data->skip_vid)

		sysfs_remove_group(&dev->kobj, &it87_group_vid);

	sysfs_remove_group(&dev->kobj, &it87_group_label);

}



/* Called when we have found a new IT87. */
@@ -2649,8 +2645,8 @@ static int it87_probe(struct platform_device *pdev) 
	struct resource *res;

	struct device *dev = &pdev->dev;

	struct it87_sio_data *sio_data = dev_get_platdata(dev);

	int err = 0, i;

	int enable_pwm_interface;

	int err = 0;



	res = platform_get_resource(pdev, IORESOURCE_IO, 0);

	if (!devm_request_region(&pdev->dev, res->start, IT87_EC_EXTENT,
@@ -2731,6 +2727,7 @@ static int it87_probe(struct platform_device *pdev) 
			data->has_temp &= ~(1 << 2);

	}



	data->in_internal = sio_data->internal;

	data->has_in = 0x3ff & ~sio_data->skip_in;



	data->has_beep = !!sio_data->beep_pin;
@@ -2738,6 +2735,13 @@ static int it87_probe(struct platform_device *pdev) 
	/* Initialize the IT87 chip */

	it87_init_device(pdev);



	if (!sio_data->skip_vid) {

		data->has_vid = true;

		data->vrm = vid_which_vrm();

		/* VID reading from Super-I/O config space if available */

		data->vid = sio_data->vid_value;

	}



	/* Register sysfs hooks */

	err = sysfs_create_group(&dev->kobj, &it87_group);

	if (err)
@@ -2770,25 +2774,6 @@ static int it87_probe(struct platform_device *pdev) 
		}

	}



	if (!sio_data->skip_vid) {

		data->vrm = vid_which_vrm();

		/* VID reading from Super-I/O config space if available */

		data->vid = sio_data->vid_value;

		err = sysfs_create_group(&dev->kobj, &it87_group_vid);

		if (err)

			goto error;

	}



	/* Export labels for internal sensors */

	for (i = 0; i < 4; i++) {

		if (!(sio_data->internal & (1 << i)))

			continue;

		err = sysfs_create_file(&dev->kobj,

					it87_attributes_label[i]);

		if (err)

			goto error;

	}



	data->hwmon_dev = hwmon_device_register(dev);

	if (IS_ERR(data->hwmon_dev)) {

		err = PTR_ERR(data->hwmon_dev);