1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Intel Low Power Subsystem PWM controller driver 4 * 5 * Copyright (C) 2014, Intel Corporation 6 * 7 * Derived from the original pwm-lpss.c 8 */ 9 10 #ifndef __PWM_LPSS_H 11 #define __PWM_LPSS_H 12 13 #include <linux/device.h> 14 #include <linux/pwm.h> 15 16 #define MAX_PWMS 4 17 18 struct pwm_lpss_chip { 19 struct pwm_chip chip; 20 void __iomem *regs; 21 const struct pwm_lpss_boardinfo *info; 22 u32 saved_ctrl[MAX_PWMS]; 23 }; 24 25 struct pwm_lpss_boardinfo { 26 unsigned long clk_rate; 27 unsigned int npwm; 28 unsigned long base_unit_bits; 29 bool bypass; 30 /* 31 * On some devices the _PS0/_PS3 AML code of the GPU (GFX0) device 32 * messes with the PWM0 controllers state, 33 */ 34 bool other_devices_aml_touches_pwm_regs; 35 }; 36 37 struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r, 38 const struct pwm_lpss_boardinfo *info); 39 int pwm_lpss_remove(struct pwm_lpss_chip *lpwm); 40 int pwm_lpss_suspend(struct device *dev); 41 int pwm_lpss_resume(struct device *dev); 42 43 #endif /* __PWM_LPSS_H */ 44