From: Guenter Roeck <linux@xxxxxxxxxxxx>
Simplify code and reduce object size by about 250 bytes on x86_64.
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/it87.c | 137 ++++++++++++++++++++++++---------------------------
1 file changed, 65 insertions(+), 72 deletions(-)
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index e70d227c2bf8..0c13d640bcc7 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -498,6 +498,7 @@ struct it87_data {
* is no longer needed, but it is still done to keep the driver
* simple.
*/
+ u8 has_pwm; /* Bitfield, pwm control enabled */
u8 pwm_ctrl[6]; /* Register value */
u8 pwm_duty[6]; /* Manual PWM value set by user */
u8 pwm_temp_map[6]; /* PWM to temp. chan. mapping (bits 1-0) */
@@ -1340,15 +1341,6 @@ static ssize_t set_pwm_temp_map(struct device *dev,
long val;
u8 reg;
- /*
- * This check can go away if we ever support automatic fan speed
- * control on newer chips.
- */
- if (!has_old_autopwm(data)) {
- dev_notice(dev, "Mapping change disabled for safety reasons\n");
- return -EINVAL;
- }
-
if (kstrtol(buf, 10, &val) < 0)
return -EINVAL;
@@ -1482,7 +1474,7 @@ static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0);
static SENSOR_DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq,
set_pwm_freq, 0);
-static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO,
show_pwm_temp_map, set_pwm_temp_map, 0);
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
show_auto_pwm, set_auto_pwm, 0, 0);
@@ -1507,7 +1499,7 @@ static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR,
show_pwm_enable, set_pwm_enable, 1);
static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1);
static SENSOR_DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, set_pwm_freq, 1);
-static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO,
show_pwm_temp_map, set_pwm_temp_map, 1);
static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR,
show_auto_pwm, set_auto_pwm, 1, 0);
@@ -1532,7 +1524,7 @@ static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR,
show_pwm_enable, set_pwm_enable, 2);
static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2);
static SENSOR_DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL, 2);
-static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO,
show_pwm_temp_map, set_pwm_temp_map, 2);
static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR,
show_auto_pwm, set_auto_pwm, 2, 0);
@@ -1557,21 +1549,21 @@ static SENSOR_DEVICE_ATTR(pwm4_enable, S_IRUGO | S_IWUSR,
show_pwm_enable, set_pwm_enable, 3);
static SENSOR_DEVICE_ATTR(pwm4, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 3);
static SENSOR_DEVICE_ATTR(pwm4_freq, S_IRUGO, show_pwm_freq, NULL, 3);
-static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm4_auto_channels_temp, S_IRUGO,
show_pwm_temp_map, set_pwm_temp_map, 3);
static SENSOR_DEVICE_ATTR(pwm5_enable, S_IRUGO | S_IWUSR,
show_pwm_enable, set_pwm_enable, 4);
static SENSOR_DEVICE_ATTR(pwm5, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 4);
static SENSOR_DEVICE_ATTR(pwm5_freq, S_IRUGO, show_pwm_freq, NULL, 4);
-static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm5_auto_channels_temp, S_IRUGO,
show_pwm_temp_map, set_pwm_temp_map, 4);
static SENSOR_DEVICE_ATTR(pwm6_enable, S_IRUGO | S_IWUSR,
show_pwm_enable, set_pwm_enable, 5);
static SENSOR_DEVICE_ATTR(pwm6, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 5);
static SENSOR_DEVICE_ATTR(pwm6_freq, S_IRUGO, show_pwm_freq, NULL, 5);
-static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO | S_IWUSR,
+static SENSOR_DEVICE_ATTR(pwm6_auto_channels_temp, S_IRUGO,
show_pwm_temp_map, set_pwm_temp_map, 5);
/* Alarms */
@@ -1969,67 +1961,81 @@ static const struct attribute_group it87_group_fan = {
.is_visible = it87_fan_is_visible,
};
-static struct attribute *it87_attributes_pwm[6][4+1] = { {
+static umode_t it87_pwm_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 / 4; /* pwm index */
+ int a = index % 4; /* attribute index */
+
+ if (!(data->has_pwm & (1 << i)))
+ return 0;
+
+ /* pwmX_auto_channels_temp is only writable for old auto pwm */
+ if (a == 3 && has_old_autopwm(data))
+ return attr->mode | S_IWUSR;
+
+ /* pwm2_freq is writable if there are two pwm frequency selects */
+ if (has_pwm_freq2(data) && i == 1 && a == 2)
+ return attr->mode | S_IWUSR;
+
+ return attr->mode;
+}
+
+static struct attribute *it87_attributes_pwm[] = {
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm1_freq.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr,
- NULL
-}, {
+
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
&sensor_dev_attr_pwm2_freq.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr,
- NULL
-}, {
+
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
&sensor_dev_attr_pwm3.dev_attr.attr,
&sensor_dev_attr_pwm3_freq.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr,
- NULL
-}, {
+
&sensor_dev_attr_pwm4_enable.dev_attr.attr,
&sensor_dev_attr_pwm4.dev_attr.attr,
&sensor_dev_attr_pwm4_freq.dev_attr.attr,
&sensor_dev_attr_pwm4_auto_channels_temp.dev_attr.attr,
- NULL
-}, {
+
&sensor_dev_attr_pwm5_enable.dev_attr.attr,
&sensor_dev_attr_pwm5.dev_attr.attr,
&sensor_dev_attr_pwm5_freq.dev_attr.attr,
&sensor_dev_attr_pwm5_auto_channels_temp.dev_attr.attr,
- NULL
-}, {
+
&sensor_dev_attr_pwm6_enable.dev_attr.attr,
&sensor_dev_attr_pwm6.dev_attr.attr,
&sensor_dev_attr_pwm6_freq.dev_attr.attr,
&sensor_dev_attr_pwm6_auto_channels_temp.dev_attr.attr,
+
NULL
-} };
+};
-static umode_t pwm_attribute_mode(struct kobject *kobj, struct attribute *attr,
- int index)
+static const struct attribute_group it87_group_pwm = {
+ .attrs = it87_attributes_pwm,
+ .is_visible = it87_pwm_is_visible,
+};
+
+static umode_t it87_auto_pwm_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 / 9; /* pwm index */
- if (has_pwm_freq2(data) && index == 2)
- return attr->mode | S_IWUSR;
+ if (!(data->has_pwm & (1 << i)))
+ return 0;
return attr->mode;
}
-static const struct attribute_group it87_group_pwm[6] = {
- { .attrs = it87_attributes_pwm[0] },
- { .attrs = it87_attributes_pwm[1],
- .is_visible = pwm_attribute_mode, },
- { .attrs = it87_attributes_pwm[2] },
- { .attrs = it87_attributes_pwm[3] },
- { .attrs = it87_attributes_pwm[4] },
- { .attrs = it87_attributes_pwm[5] },
-};
-
-static struct attribute *it87_attributes_autopwm[3][9+1] = { {
+static struct attribute *it87_attributes_auto_pwm[] = {
&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
@@ -2039,8 +2045,7 @@ static struct attribute *it87_attributes_autopwm[3][9+1] = { {
&sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
- NULL
-}, {
+
&sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr,
@@ -2050,8 +2055,7 @@ static struct attribute *it87_attributes_autopwm[3][9+1] = { {
&sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr,
- NULL
-}, {
+
&sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr,
@@ -2061,13 +2065,13 @@ static struct attribute *it87_attributes_autopwm[3][9+1] = { {
&sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr,
- NULL
-} };
-static const struct attribute_group it87_group_autopwm[3] = {
- { .attrs = it87_attributes_autopwm[0] },
- { .attrs = it87_attributes_autopwm[1] },
- { .attrs = it87_attributes_autopwm[2] },
+ NULL,
+};
+
+static const struct attribute_group it87_group_auto_pwm = {
+ .attrs = it87_attributes_auto_pwm,
+ .is_visible = it87_auto_pwm_is_visible,
};
static struct attribute *it87_attributes_vid[] = {
@@ -2456,23 +2460,15 @@ exit:
static void it87_remove_files(struct device *dev)
{
- struct it87_data *data = dev_get_drvdata(dev);
struct it87_sio_data *sio_data = dev_get_platdata(dev);
- int i;
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);
- for (i = 0; i < 6; i++) {
- if (sio_data->skip_pwm & (1 << i))
- continue;
- sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]);
- if (has_old_autopwm(data))
- sysfs_remove_group(&dev->kobj,
- &it87_group_autopwm[i]);
- }
if (!sio_data->skip_vid)
sysfs_remove_group(&dev->kobj, &it87_group_vid);
sysfs_remove_group(&dev->kobj, &it87_group_label);
@@ -2760,18 +2756,15 @@ static int it87_probe(struct platform_device *pdev)
goto error;
if (enable_pwm_interface) {
- for (i = 0; i < 6; i++) {
- if (sio_data->skip_pwm & (1 << i))
- continue;
- err = sysfs_create_group(&dev->kobj,
- &it87_group_pwm[i]);
- if (err)
- goto error;
+ data->has_pwm = (1 << ARRAY_SIZE(IT87_REG_PWM)) - 1;
+ data->has_pwm &= ~sio_data->skip_pwm;
- if (!has_old_autopwm(data))
- continue;
+ err = sysfs_create_group(&dev->kobj, &it87_group_pwm);
+ if (err)
+ goto error;
+ if (has_old_autopwm(data)) {
err = sysfs_create_group(&dev->kobj,
- &it87_group_autopwm[i]);
+ &it87_group_auto_pwm);
if (err)
goto error;
}
--
2.1.4
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