diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c index 18b3c7c27d36..43b697380987 100644 --- a/drivers/hwmon/gpio-fan.c +++ b/drivers/hwmon/gpio-fan.c @@ -29,10 +29,9 @@ #include #include #include -#include +#include #include #include -#include #include struct gpio_fan_speed { @@ -47,7 +46,7 @@ struct gpio_fan_data { struct thermal_cooling_device *cdev; struct mutex lock; /* lock GPIOs operations. */ int num_gpios; - unsigned int *gpios; + struct gpio_desc **gpios; int num_speed; struct gpio_fan_speed *speed; int speed_index; @@ -55,8 +54,7 @@ struct gpio_fan_data { int resume_speed; #endif bool pwm_enable; - unsigned int alarm_gpio; - unsigned int alarm_gpio_active_low; + struct gpio_desc *alarm_gpio; struct work_struct alarm_work; }; @@ -86,43 +84,30 @@ static ssize_t fan1_alarm_show(struct device *dev, struct device_attribute *attr, char *buf) { struct gpio_fan_data *fan_data = dev_get_drvdata(dev); - int value = gpio_get_value_cansleep(fan_data->alarm_gpio); - if (fan_data->alarm_gpio_active_low) - value = !value; - - return sprintf(buf, "%d\n", value); + return sprintf(buf, "%d\n", + gpiod_get_value_cansleep(fan_data->alarm_gpio)); } static DEVICE_ATTR_RO(fan1_alarm); static int fan_alarm_init(struct gpio_fan_data *fan_data) { - int err; int alarm_irq; struct device *dev = fan_data->dev; - err = devm_gpio_request(dev, fan_data->alarm_gpio, "GPIO fan alarm"); - if (err) - return err; - - err = gpio_direction_input(fan_data->alarm_gpio); - if (err) - return err; - /* * If the alarm GPIO don't support interrupts, just leave * without initializing the fail notification support. */ - alarm_irq = gpio_to_irq(fan_data->alarm_gpio); - if (alarm_irq < 0) + alarm_irq = gpiod_to_irq(fan_data->alarm_gpio); + if (alarm_irq <= 0) return 0; INIT_WORK(&fan_data->alarm_work, fan_alarm_notify); irq_set_irq_type(alarm_irq, IRQ_TYPE_EDGE_BOTH); - err = devm_request_irq(dev, alarm_irq, fan_alarm_irq_handler, - IRQF_SHARED, "GPIO fan alarm", fan_data); - return err; + return devm_request_irq(dev, alarm_irq, fan_alarm_irq_handler, + IRQF_SHARED, "GPIO fan alarm", fan_data); } /* @@ -135,8 +120,8 @@ static void __set_fan_ctrl(struct gpio_fan_data *fan_data, int ctrl_val) int i; for (i = 0; i < fan_data->num_gpios; i++) - gpio_set_value_cansleep(fan_data->gpios[i], - (ctrl_val >> i) & 1); + gpiod_set_value_cansleep(fan_data->gpios[i], + (ctrl_val >> i) & 1); } static int __get_fan_ctrl(struct gpio_fan_data *fan_data) @@ -147,7 +132,7 @@ static int __get_fan_ctrl(struct gpio_fan_data *fan_data) for (i = 0; i < fan_data->num_gpios; i++) { int value; - value = gpio_get_value_cansleep(fan_data->gpios[i]); + value = gpiod_get_value_cansleep(fan_data->gpios[i]); ctrl_val |= (value << i); } return ctrl_val; @@ -362,19 +347,19 @@ 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_gpios = fan_data->num_gpios; - unsigned int *gpios = fan_data->gpios; + struct gpio_desc **gpios = fan_data->gpios; int i, err; 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(gpios[i], - gpio_get_value_cansleep(gpios[i])); + /* + * The GPIO descriptors were retrieved with GPIOD_ASIS so here + * we set the GPIO into output mode, carefully preserving the + * current value by setting it to whatever it is already set + * (no surprise changes in default fan speed). + */ + err = gpiod_direction_output(gpios[i], + gpiod_get_value_cansleep(gpios[i])); if (err) return err; } @@ -437,43 +422,34 @@ 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 int *gpios; + struct gpio_desc **gpios; unsigned i; u32 u; struct property *prop; const __be32 *p; /* Alarm GPIO if one exists */ - if (of_gpio_named_count(np, "alarm-gpios") > 0) { - int val; - enum of_gpio_flags flags; - - val = of_get_named_gpio_flags(np, "alarm-gpios", 0, &flags); - if (val < 0) - return val; - fan_data->alarm_gpio = val; - fan_data->alarm_gpio_active_low = flags & OF_GPIO_ACTIVE_LOW; - } + fan_data->alarm_gpio = devm_gpiod_get_optional(dev, "alarm", GPIOD_IN); + if (IS_ERR(fan_data->alarm_gpio)) + return PTR_ERR(fan_data->alarm_gpio); /* Fill GPIO pin array */ - fan_data->num_gpios = of_gpio_count(np); + fan_data->num_gpios = gpiod_count(dev, NULL); if (fan_data->num_gpios <= 0) { if (fan_data->alarm_gpio) return 0; dev_err(dev, "DT properties empty / missing"); return -ENODEV; } - gpios = devm_kzalloc(dev, fan_data->num_gpios * sizeof(unsigned int), - GFP_KERNEL); + gpios = devm_kzalloc(dev, + fan_data->num_gpios * sizeof(struct gpio_desc *), + GFP_KERNEL); if (!gpios) return -ENOMEM; for (i = 0; i < fan_data->num_gpios; i++) { - int val; - - val = of_get_gpio(np, i); - if (val < 0) - return val; - gpios[i] = val; + gpios[i] = devm_gpiod_get_index(dev, NULL, i, GPIOD_ASIS); + if (IS_ERR(gpios[i])) + return PTR_ERR(gpios[i]); } fan_data->gpios = gpios;