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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: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2013-03-30 15:47:21 -07:00
parent 5c3912616d
commit d376684880
1 changed files with 33 additions and 48 deletions
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81
drivers/hwmon/it87.c
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@ -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 @@ exit:
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);