LXR linux/include/linux/gpio-fan.h

   1/*
   2 * include/linux/gpio-fan.h
   3 *
   4 * Platform data structure for GPIO fan driver
   5 *
   6 * This file is licensed under the terms of the GNU General Public
   7 * License version 2.  This program is licensed "as is" without any
   8 * warranty of any kind, whether express or implied.
   9 */
  10
  11#ifndef __LINUX_GPIO_FAN_H
  12#define __LINUX_GPIO_FAN_H
  13
  14struct gpio_fan_alarm {
  15        unsigned        gpio;
  16        unsigned        active_low;
  17};
  18
  19struct gpio_fan_speed {
  20        int rpm;
  21        int ctrl_val;
  22};
  23
  24struct gpio_fan_platform_data {
  25        int                     num_ctrl;
  26        unsigned                *ctrl;  /* fan control GPIOs. */
  27        struct gpio_fan_alarm   *alarm; /* fan alarm GPIO. */
  28        /*
  29         * Speed conversion array: rpm from/to GPIO bit field.
  30         * This array _must_ be sorted in ascending rpm order.
  31         */
  32        int                     num_speed;
  33        struct gpio_fan_speed   *speed;
  34};
  35
  36#endif /* __LINUX_GPIO_FAN_H */
  37