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 };
23 
24 struct pwm_lpss_boardinfo {
25 	unsigned long clk_rate;
26 	unsigned int npwm;
27 	unsigned long base_unit_bits;
28 	bool bypass;
29 	/*
30 	 * On some devices the _PS0/_PS3 AML code of the GPU (GFX0) device
31 	 * messes with the PWM0 controllers state,
32 	 */
33 	bool other_devices_aml_touches_pwm_regs;
34 };
35 
36 struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
37 				     const struct pwm_lpss_boardinfo *info);
38 
39 #endif	/* __PWM_LPSS_H */
40