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/* 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;
/*
* Some versions of the IP may stuck in the state machine if enable
* bit is not set, and hence update bit will show busy status till
* the reset. For the rest it may be otherwise.
*/
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;
};
extern const struct pwm_lpss_boardinfo pwm_lpss_byt_info;
extern const struct pwm_lpss_boardinfo pwm_lpss_bsw_info;
extern const struct pwm_lpss_boardinfo pwm_lpss_bxt_info;
extern const struct pwm_lpss_boardinfo pwm_lpss_tng_info;
struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, void __iomem *base,
const struct pwm_lpss_boardinfo *info);
#endif /* __PWM_LPSS_H */
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