mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-19 02:34:01 +08:00
d6fe1360f4
This patch adds hwmon support for fans connected to GPIO lines. Platform specific information such as GPIO pinout and speed conversion array (rpm from/to GPIO value) are passed to the driver via platform_data. Signed-off-by: Simon Guinot <sguinot@lacie.com> Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
37 lines
802 B
C
37 lines
802 B
C
/*
|
|
* include/linux/gpio-fan.h
|
|
*
|
|
* Platform data structure for GPIO fan driver
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#ifndef __LINUX_GPIO_FAN_H
|
|
#define __LINUX_GPIO_FAN_H
|
|
|
|
struct gpio_fan_alarm {
|
|
unsigned gpio;
|
|
unsigned active_low;
|
|
};
|
|
|
|
struct gpio_fan_speed {
|
|
int rpm;
|
|
int ctrl_val;
|
|
};
|
|
|
|
struct gpio_fan_platform_data {
|
|
int num_ctrl;
|
|
unsigned *ctrl; /* fan control GPIOs. */
|
|
struct gpio_fan_alarm *alarm; /* fan alarm GPIO. */
|
|
/*
|
|
* Speed conversion array: rpm from/to GPIO bit field.
|
|
* This array _must_ be sorted in ascending rpm order.
|
|
*/
|
|
int num_speed;
|
|
struct gpio_fan_speed *speed;
|
|
};
|
|
|
|
#endif /* __LINUX_GPIO_FAN_H */
|