1 /* 2 * Intel Low Power Subsystem PWM controller driver 3 * 4 * Copyright (C) 2014, Intel Corporation 5 * 6 * Derived from the original pwm-lpss.c 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11 */ 12 13 #ifndef __PWM_LPSS_H 14 #define __PWM_LPSS_H 15 16 #include <linux/device.h> 17 #include <linux/pwm.h> 18 19 #define MAX_PWMS 4 20 21 struct pwm_lpss_chip { 22 struct pwm_chip chip; 23 void __iomem *regs; 24 const struct pwm_lpss_boardinfo *info; 25 u32 saved_ctrl[MAX_PWMS]; 26 }; 27 28 struct pwm_lpss_boardinfo { 29 unsigned long clk_rate; 30 unsigned int npwm; 31 unsigned long base_unit_bits; 32 bool bypass; 33 /* 34 * On some devices the _PS0/_PS3 AML code of the GPU (GFX0) device 35 * messes with the PWM0 controllers state, 36 */ 37 bool other_devices_aml_touches_pwm_regs; 38 }; 39 40 struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r, 41 const struct pwm_lpss_boardinfo *info); 42 int pwm_lpss_remove(struct pwm_lpss_chip *lpwm); 43 int pwm_lpss_suspend(struct device *dev); 44 int pwm_lpss_resume(struct device *dev); 45 46 #endif /* __PWM_LPSS_H */ 47