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Commit 52929715 authored by Guenter Roeck's avatar Guenter Roeck
Browse files

hwmon: (it87) Use is_visible for voltage sensors 



Simplify code and reduce object size by more than 300 bytes on x86_64.

Tested-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent c1e7a4ca

drivers/hwmon/it87.c

+56 −68
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 has_in;		/* Bitfield, voltage sensors enabled */

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

	u8 has_fan;		/* Bitfield, fans enabled */

	u16 fan[6][2];		/* Register values, [nr][0]=fan, [1]=min */
@@ -482,6 +483,7 @@ struct it87_data { 
	u8 vid;			/* Register encoding, combined */

	u8 vrm;

	u32 alarms;		/* Register encoding, combined */

	bool has_beep;		/* true if beep supported */

	u8 beeps;		/* Register encoding */

	u8 fan_main_ctrl;	/* Register value */

	u8 fan_ctl;		/* Register value */
@@ -1751,74 +1753,85 @@ static ssize_t show_name(struct device *dev, struct device_attribute 
}

static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);



static struct attribute *it87_attributes_in[10][5] = {

static umode_t it87_in_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);

	int i = index / 5;	/* voltage index */

	int a = index % 5;	/* attribute index */



	if (index >= 40) {	/* in8, in9 only have input attributes */

		i = index - 40 + 8;

		a = 0;

	}



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

		return 0;



	if (a == 4 && !data->has_beep)

		return 0;



	return attr->mode;

}



static struct attribute *it87_attributes_in[] = {

	&sensor_dev_attr_in0_input.dev_attr.attr,

	&sensor_dev_attr_in0_min.dev_attr.attr,

	&sensor_dev_attr_in0_max.dev_attr.attr,

	&sensor_dev_attr_in0_alarm.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in0_beep.dev_attr.attr,	/* 4 */



	&sensor_dev_attr_in1_input.dev_attr.attr,

	&sensor_dev_attr_in1_min.dev_attr.attr,

	&sensor_dev_attr_in1_max.dev_attr.attr,

	&sensor_dev_attr_in1_alarm.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in1_beep.dev_attr.attr,	/* 9 */



	&sensor_dev_attr_in2_input.dev_attr.attr,

	&sensor_dev_attr_in2_min.dev_attr.attr,

	&sensor_dev_attr_in2_max.dev_attr.attr,

	&sensor_dev_attr_in2_alarm.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in2_beep.dev_attr.attr,	/* 14 */



	&sensor_dev_attr_in3_input.dev_attr.attr,

	&sensor_dev_attr_in3_min.dev_attr.attr,

	&sensor_dev_attr_in3_max.dev_attr.attr,

	&sensor_dev_attr_in3_alarm.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in3_beep.dev_attr.attr,	/* 19 */



	&sensor_dev_attr_in4_input.dev_attr.attr,

	&sensor_dev_attr_in4_min.dev_attr.attr,

	&sensor_dev_attr_in4_max.dev_attr.attr,

	&sensor_dev_attr_in4_alarm.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in4_beep.dev_attr.attr,	/* 24 */



	&sensor_dev_attr_in5_input.dev_attr.attr,

	&sensor_dev_attr_in5_min.dev_attr.attr,

	&sensor_dev_attr_in5_max.dev_attr.attr,

	&sensor_dev_attr_in5_alarm.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in5_beep.dev_attr.attr,	/* 29 */



	&sensor_dev_attr_in6_input.dev_attr.attr,

	&sensor_dev_attr_in6_min.dev_attr.attr,

	&sensor_dev_attr_in6_max.dev_attr.attr,

	&sensor_dev_attr_in6_alarm.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in6_beep.dev_attr.attr,	/* 34 */



	&sensor_dev_attr_in7_input.dev_attr.attr,

	&sensor_dev_attr_in7_min.dev_attr.attr,

	&sensor_dev_attr_in7_max.dev_attr.attr,

	&sensor_dev_attr_in7_alarm.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in8_input.dev_attr.attr,

	NULL

}, {

	&sensor_dev_attr_in9_input.dev_attr.attr,

	NULL

} };

	&sensor_dev_attr_in7_beep.dev_attr.attr,	/* 39 */



	&sensor_dev_attr_in8_input.dev_attr.attr,	/* 40 */



	&sensor_dev_attr_in9_input.dev_attr.attr,	/* 41 */

};



static const struct attribute_group it87_group_in[10] = {

	{ .attrs = it87_attributes_in[0] },

	{ .attrs = it87_attributes_in[1] },

	{ .attrs = it87_attributes_in[2] },

	{ .attrs = it87_attributes_in[3] },

	{ .attrs = it87_attributes_in[4] },

	{ .attrs = it87_attributes_in[5] },

	{ .attrs = it87_attributes_in[6] },

	{ .attrs = it87_attributes_in[7] },

	{ .attrs = it87_attributes_in[8] },

	{ .attrs = it87_attributes_in[9] },

static const struct attribute_group it87_group_in = {

	.attrs = it87_attributes_in,

	.is_visible = it87_in_is_visible,

};



static struct attribute *it87_attributes_temp[3][6] = {
@@ -1868,19 +1881,6 @@ static const struct attribute_group it87_group = { 
	.attrs = it87_attributes,

};



static struct attribute *it87_attributes_in_beep[] = {

	&sensor_dev_attr_in0_beep.dev_attr.attr,

	&sensor_dev_attr_in1_beep.dev_attr.attr,

	&sensor_dev_attr_in2_beep.dev_attr.attr,

	&sensor_dev_attr_in3_beep.dev_attr.attr,

	&sensor_dev_attr_in4_beep.dev_attr.attr,

	&sensor_dev_attr_in5_beep.dev_attr.attr,

	&sensor_dev_attr_in6_beep.dev_attr.attr,

	&sensor_dev_attr_in7_beep.dev_attr.attr,

	NULL,

	NULL,

};



static struct attribute *it87_attributes_temp_beep[] = {

	&sensor_dev_attr_temp1_beep.dev_attr.attr,

	&sensor_dev_attr_temp2_beep.dev_attr.attr,
@@ -2435,14 +2435,8 @@ static void it87_remove_files(struct device *dev) 
	int i;



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

	for (i = 0; i < 10; i++) {

		if (sio_data->skip_in & (1 << i))

			continue;

		sysfs_remove_group(&dev->kobj, &it87_group_in[i]);

		if (it87_attributes_in_beep[i])

			sysfs_remove_file(&dev->kobj,

					  it87_attributes_in_beep[i]);

	}

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



	for (i = 0; i < 3; i++) {

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

			continue;
@@ -2736,6 +2730,10 @@ static int it87_probe(struct platform_device *pdev) 
			data->has_temp &= ~(1 << 2);

	}



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



	data->has_beep = !!sio_data->beep_pin;



	/* Initialize the IT87 chip */

	it87_init_device(pdev);
@@ -2744,19 +2742,9 @@ static int it87_probe(struct platform_device *pdev) 
	if (err)

		return err;



	for (i = 0; i < 10; i++) {

		if (sio_data->skip_in & (1 << i))

			continue;

		err = sysfs_create_group(&dev->kobj, &it87_group_in[i]);

	err = sysfs_create_group(&dev->kobj, &it87_group_in);

	if (err)

		goto error;

		if (sio_data->beep_pin && it87_attributes_in_beep[i]) {

			err = sysfs_create_file(&dev->kobj,

						it87_attributes_in_beep[i]);

			if (err)

				goto error;

		}

	}



	for (i = 0; i < 3; i++) {

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