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
18struct 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
25struct 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
37struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
38				     const struct pwm_lpss_boardinfo *info);
39int pwm_lpss_remove(struct pwm_lpss_chip *lpwm);
40int pwm_lpss_suspend(struct device *dev);
41int pwm_lpss_resume(struct device *dev);
42
43#endif	/* __PWM_LPSS_H */

 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
18struct 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
25struct 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
37struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
38				     const struct pwm_lpss_boardinfo *info);
39int pwm_lpss_remove(struct pwm_lpss_chip *lpwm);
40int pwm_lpss_suspend(struct device *dev);
41int pwm_lpss_resume(struct device *dev);
42
43#endif	/* __PWM_LPSS_H */