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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.c77
1 files changed, 26 insertions, 51 deletions
diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c
index 2ce8c44a0e07..2f4b01bda87c 100644
--- a/drivers/hwmon/gpio-fan.c
+++ b/drivers/hwmon/gpio-fan.c
@@ -41,7 +41,7 @@ struct gpio_fan_data {
int num_speed;
struct gpio_fan_speed *speed;
int speed_index;
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
int resume_speed;
#endif
bool pwm_enable;
@@ -95,17 +95,17 @@ static int fan_alarm_init(struct gpio_fan_data *fan_data,
fan_data->alarm = alarm;
- err = gpio_request(alarm->gpio, "GPIO fan alarm");
+ err = devm_gpio_request(&pdev->dev, alarm->gpio, "GPIO fan alarm");
if (err)
return err;
err = gpio_direction_input(alarm->gpio);
if (err)
- goto err_free_gpio;
+ return err;
err = device_create_file(&pdev->dev, &dev_attr_fan1_alarm);
if (err)
- goto err_free_gpio;
+ return err;
/*
* If the alarm GPIO don't support interrupts, just leave
@@ -117,8 +117,8 @@ static int fan_alarm_init(struct gpio_fan_data *fan_data,
INIT_WORK(&fan_data->alarm_work, fan_alarm_notify);
irq_set_irq_type(alarm_irq, IRQ_TYPE_EDGE_BOTH);
- err = request_irq(alarm_irq, fan_alarm_irq_handler, IRQF_SHARED,
- "GPIO fan alarm", fan_data);
+ err = devm_request_irq(&pdev->dev, alarm_irq, fan_alarm_irq_handler,
+ IRQF_SHARED, "GPIO fan alarm", fan_data);
if (err)
goto err_free_sysfs;
@@ -126,21 +126,14 @@ static int fan_alarm_init(struct gpio_fan_data *fan_data,
err_free_sysfs:
device_remove_file(&pdev->dev, &dev_attr_fan1_alarm);
-err_free_gpio:
- gpio_free(alarm->gpio);
-
return err;
}
static void fan_alarm_free(struct gpio_fan_data *fan_data)
{
struct platform_device *pdev = fan_data->pdev;
- int alarm_irq = gpio_to_irq(fan_data->alarm->gpio);
- if (alarm_irq >= 0)
- free_irq(alarm_irq, fan_data);
device_remove_file(&pdev->dev, &dev_attr_fan1_alarm);
- gpio_free(fan_data->alarm->gpio);
}
/*
@@ -365,15 +358,14 @@ static int fan_ctrl_init(struct gpio_fan_data *fan_data,
int i, err;
for (i = 0; i < num_ctrl; i++) {
- err = gpio_request(ctrl[i], "GPIO fan control");
+ err = devm_gpio_request(&pdev->dev, ctrl[i],
+ "GPIO fan control");
if (err)
- goto err_free_gpio;
+ return err;
err = gpio_direction_output(ctrl[i], gpio_get_value(ctrl[i]));
- if (err) {
- gpio_free(ctrl[i]);
- goto err_free_gpio;
- }
+ if (err)
+ return err;
}
fan_data->num_ctrl = num_ctrl;
@@ -382,32 +374,18 @@ static int fan_ctrl_init(struct gpio_fan_data *fan_data,
fan_data->speed = pdata->speed;
fan_data->pwm_enable = true; /* Enable manual fan speed control. */
fan_data->speed_index = get_fan_speed_index(fan_data);
- if (fan_data->speed_index < 0) {
- err = -ENODEV;
- goto err_free_gpio;
- }
+ if (fan_data->speed_index < 0)
+ return -ENODEV;
err = sysfs_create_group(&pdev->dev.kobj, &gpio_fan_ctrl_group);
- if (err)
- goto err_free_gpio;
-
- return 0;
-
-err_free_gpio:
- for (i = i - 1; i >= 0; i--)
- gpio_free(ctrl[i]);
-
return err;
}
static void fan_ctrl_free(struct gpio_fan_data *fan_data)
{
struct platform_device *pdev = fan_data->pdev;
- int i;
sysfs_remove_group(&pdev->dev.kobj, &gpio_fan_ctrl_group);
- for (i = 0; i < fan_data->num_ctrl; i++)
- gpio_free(fan_data->ctrl[i]);
}
/*
@@ -431,7 +409,8 @@ static int __devinit gpio_fan_probe(struct platform_device *pdev)
if (!pdata)
return -EINVAL;
- fan_data = kzalloc(sizeof(struct gpio_fan_data), GFP_KERNEL);
+ fan_data = devm_kzalloc(&pdev->dev, sizeof(struct gpio_fan_data),
+ GFP_KERNEL);
if (!fan_data)
return -ENOMEM;
@@ -443,7 +422,7 @@ static int __devinit gpio_fan_probe(struct platform_device *pdev)
if (pdata->alarm) {
err = fan_alarm_init(fan_data, pdata->alarm);
if (err)
- goto err_free_data;
+ return err;
}
/* Configure control GPIOs if available. */
@@ -480,10 +459,6 @@ err_free_ctrl:
err_free_alarm:
if (fan_data->alarm)
fan_alarm_free(fan_data);
-err_free_data:
- platform_set_drvdata(pdev, NULL);
- kfree(fan_data);
-
return err;
}
@@ -497,15 +472,14 @@ static int __devexit gpio_fan_remove(struct platform_device *pdev)
fan_alarm_free(fan_data);
if (fan_data->ctrl)
fan_ctrl_free(fan_data);
- kfree(fan_data);
return 0;
}
-#ifdef CONFIG_PM
-static int gpio_fan_suspend(struct platform_device *pdev, pm_message_t state)
+#ifdef CONFIG_PM_SLEEP
+static int gpio_fan_suspend(struct device *dev)
{
- struct gpio_fan_data *fan_data = platform_get_drvdata(pdev);
+ struct gpio_fan_data *fan_data = dev_get_drvdata(dev);
if (fan_data->ctrl) {
fan_data->resume_speed = fan_data->speed_index;
@@ -515,27 +489,28 @@ static int gpio_fan_suspend(struct platform_device *pdev, pm_message_t state)
return 0;
}
-static int gpio_fan_resume(struct platform_device *pdev)
+static int gpio_fan_resume(struct device *dev)
{
- struct gpio_fan_data *fan_data = platform_get_drvdata(pdev);
+ struct gpio_fan_data *fan_data = dev_get_drvdata(dev);
if (fan_data->ctrl)
set_fan_speed(fan_data, fan_data->resume_speed);
return 0;
}
+
+static SIMPLE_DEV_PM_OPS(gpio_fan_pm, gpio_fan_suspend, gpio_fan_resume);
+#define GPIO_FAN_PM &gpio_fan_pm
#else
-#define gpio_fan_suspend NULL
-#define gpio_fan_resume NULL
+#define GPIO_FAN_PM NULL
#endif
static struct platform_driver gpio_fan_driver = {
.probe = gpio_fan_probe,
.remove = __devexit_p(gpio_fan_remove),
- .suspend = gpio_fan_suspend,
- .resume = gpio_fan_resume,
.driver = {
.name = "gpio-fan",
+ .pm = GPIO_FAN_PM,
},
};