blob: 3236be835bd9c948b929cd066ae74feaff2eed73 [file] [log] [blame]
* Intel Low Power Subsystem PWM controller driver
* Copyright (C) 2014, Intel Corporation
* Derived from the original pwm-lpss.c
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
#ifndef __PWM_LPSS_H
#define __PWM_LPSS_H
#include <linux/device.h>
#include <linux/pwm.h>
#define MAX_PWMS 4
struct pwm_lpss_chip {
struct pwm_chip chip;
void __iomem *regs;
const struct pwm_lpss_boardinfo *info;
u32 saved_ctrl[MAX_PWMS];
struct pwm_lpss_boardinfo {
unsigned long clk_rate;
unsigned int npwm;
unsigned long base_unit_bits;
bool bypass;
* On some devices the _PS0/_PS3 AML code of the GPU (GFX0) device
* messes with the PWM0 controllers state,
bool other_devices_aml_touches_pwm_regs;
struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
const struct pwm_lpss_boardinfo *info);
int pwm_lpss_remove(struct pwm_lpss_chip *lpwm);
int pwm_lpss_suspend(struct device *dev);
int pwm_lpss_resume(struct device *dev);
#endif /* __PWM_LPSS_H */