[linux-block.git] / drivers / pwm / pwm-lpss.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Intel Low Power Subsystem PWM controller driver
 *
 * Copyright (C) 2014, Intel Corporation
 *
 * Derived from the original pwm-lpss.c
 */

#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;
};

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);

#endif	/* __PWM_LPSS_H */
Commit	Line	Data
d2912cb1	1	/* SPDX-License-Identifier: GPL-2.0-only */
c558e39e AS	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
c558e39e AS	8	*/
	9
	10	#ifndef __PWM_LPSS_H
	11	#define __PWM_LPSS_H
	12
	13	#include <linux/device.h>
	14	#include <linux/pwm.h>
	15
9dc419b6 HG	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;
9dc419b6	22	};
c558e39e AS	23
	24	struct pwm_lpss_boardinfo {
	25	unsigned long clk_rate;
4e11f5ac	26	unsigned int npwm;
883e4d07	27	unsigned long base_unit_bits;
b997e3ed	28	bool bypass;
4743765b HG	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;
c558e39e AS	34	};
c558e39e AS	35
c558e39e AS	36	struct pwm_lpss_chip pwm_lpss_probe(struct device dev, struct resource *r,
c558e39e AS	37	const struct pwm_lpss_boardinfo *info);
c558e39e AS	38
c558e39e AS	39	#endif /* __PWM_LPSS_H */