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path: root/drivers/hwmon/gpio-fan.c
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Diffstat (limited to 'drivers/hwmon/gpio-fan.c')
-rw-r--r--drivers/hwmon/gpio-fan.c51
1 files changed, 26 insertions, 25 deletions
diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c
index 568ce4b25a9e..18b3c7c27d36 100644
--- a/drivers/hwmon/gpio-fan.c
+++ b/drivers/hwmon/gpio-fan.c
@@ -46,8 +46,8 @@ struct gpio_fan_data {
/* Cooling device if any */
struct thermal_cooling_device *cdev;
struct mutex lock; /* lock GPIOs operations. */
- int num_ctrl;
- unsigned *ctrl;
+ int num_gpios;
+ unsigned int *gpios;
int num_speed;
struct gpio_fan_speed *speed;
int speed_index;
@@ -134,8 +134,9 @@ static void __set_fan_ctrl(struct gpio_fan_data *fan_data, int ctrl_val)
{
int i;
- for (i = 0; i < fan_data->num_ctrl; i++)
- gpio_set_value_cansleep(fan_data->ctrl[i], (ctrl_val >> i) & 1);
+ for (i = 0; i < fan_data->num_gpios; i++)
+ gpio_set_value_cansleep(fan_data->gpios[i],
+ (ctrl_val >> i) & 1);
}
static int __get_fan_ctrl(struct gpio_fan_data *fan_data)
@@ -143,10 +144,10 @@ static int __get_fan_ctrl(struct gpio_fan_data *fan_data)
int i;
int ctrl_val = 0;
- for (i = 0; i < fan_data->num_ctrl; i++) {
+ for (i = 0; i < fan_data->num_gpios; i++) {
int value;
- value = gpio_get_value_cansleep(fan_data->ctrl[i]);
+ value = gpio_get_value_cansleep(fan_data->gpios[i]);
ctrl_val |= (value << i);
}
return ctrl_val;
@@ -331,7 +332,7 @@ static umode_t gpio_fan_is_visible(struct kobject *kobj,
if (index == 0 && !data->alarm_gpio)
return 0;
- if (index > 0 && !data->ctrl)
+ if (index > 0 && !data->gpios)
return 0;
return attr->mode;
@@ -362,18 +363,18 @@ static const struct attribute_group *gpio_fan_groups[] = {
static int fan_ctrl_init(struct gpio_fan_data *fan_data)
{
struct device *dev = fan_data->dev;
- int num_ctrl = fan_data->num_ctrl;
- unsigned int *ctrl = fan_data->ctrl;
+ int num_gpios = fan_data->num_gpios;
+ unsigned int *gpios = fan_data->gpios;
int i, err;
- for (i = 0; i < num_ctrl; i++) {
- err = devm_gpio_request(dev, ctrl[i],
+ for (i = 0; i < num_gpios; i++) {
+ err = devm_gpio_request(dev, gpios[i],
"GPIO fan control");
if (err)
return err;
- err = gpio_direction_output(ctrl[i],
- gpio_get_value_cansleep(ctrl[i]));
+ err = gpio_direction_output(gpios[i],
+ gpio_get_value_cansleep(gpios[i]));
if (err)
return err;
}
@@ -436,7 +437,7 @@ static int gpio_fan_get_of_data(struct gpio_fan_data *fan_data)
struct gpio_fan_speed *speed;
struct device *dev = fan_data->dev;
struct device_node *np = dev->of_node;
- unsigned *ctrl;
+ unsigned int *gpios;
unsigned i;
u32 u;
struct property *prop;
@@ -455,26 +456,26 @@ static int gpio_fan_get_of_data(struct gpio_fan_data *fan_data)
}
/* Fill GPIO pin array */
- fan_data->num_ctrl = of_gpio_count(np);
- if (fan_data->num_ctrl <= 0) {
+ fan_data->num_gpios = of_gpio_count(np);
+ if (fan_data->num_gpios <= 0) {
if (fan_data->alarm_gpio)
return 0;
dev_err(dev, "DT properties empty / missing");
return -ENODEV;
}
- ctrl = devm_kzalloc(dev, fan_data->num_ctrl * sizeof(unsigned int),
+ gpios = devm_kzalloc(dev, fan_data->num_gpios * sizeof(unsigned int),
GFP_KERNEL);
- if (!ctrl)
+ if (!gpios)
return -ENOMEM;
- for (i = 0; i < fan_data->num_ctrl; i++) {
+ for (i = 0; i < fan_data->num_gpios; i++) {
int val;
val = of_get_gpio(np, i);
if (val < 0)
return val;
- ctrl[i] = val;
+ gpios[i] = val;
}
- fan_data->ctrl = ctrl;
+ fan_data->gpios = gpios;
/* Get number of RPM/ctrl_val pairs in speed map */
prop = of_find_property(np, "gpio-fan,speed-map", &i);
@@ -549,7 +550,7 @@ static int gpio_fan_probe(struct platform_device *pdev)
}
/* Configure control GPIOs if available. */
- if (fan_data->ctrl && fan_data->num_ctrl > 0) {
+ if (fan_data->gpios && fan_data->num_gpios > 0) {
if (!fan_data->speed || fan_data->num_speed <= 1)
return -EINVAL;
err = fan_ctrl_init(fan_data);
@@ -583,7 +584,7 @@ static int gpio_fan_remove(struct platform_device *pdev)
if (!IS_ERR(fan_data->cdev))
thermal_cooling_device_unregister(fan_data->cdev);
- if (fan_data->ctrl)
+ if (fan_data->gpios)
set_fan_speed(fan_data, 0);
return 0;
@@ -599,7 +600,7 @@ static int gpio_fan_suspend(struct device *dev)
{
struct gpio_fan_data *fan_data = dev_get_drvdata(dev);
- if (fan_data->ctrl) {
+ if (fan_data->gpios) {
fan_data->resume_speed = fan_data->speed_index;
set_fan_speed(fan_data, 0);
}
@@ -611,7 +612,7 @@ static int gpio_fan_resume(struct device *dev)
{
struct gpio_fan_data *fan_data = dev_get_drvdata(dev);
- if (fan_data->ctrl)
+ if (fan_data->gpios)
set_fan_speed(fan_data, fan_data->resume_speed);
return 0;