linux/drivers/pwm/pwm-stmpe.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (C) 2016 Linaro Ltd.
 *
 * Author: Linus Walleij <[email protected]>
 */

#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/mfd/stmpe.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pwm.h>
#include <linux/slab.h>

#define STMPE24XX_PWMCS …
#define PWMCS_EN_PWM0 …
#define PWMCS_EN_PWM1 …
#define PWMCS_EN_PWM2 …
#define STMPE24XX_PWMIC0 …
#define STMPE24XX_PWMIC1 …
#define STMPE24XX_PWMIC2 …

#define STMPE_PWM_24XX_PINBASE …

struct stmpe_pwm { … };

static inline struct stmpe_pwm *to_stmpe_pwm(struct pwm_chip *chip)
{ … }

static int stmpe_24xx_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
{ … }

static int stmpe_24xx_pwm_disable(struct pwm_chip *chip,
				  struct pwm_device *pwm)
{ … }

/* STMPE 24xx PWM instructions */
#define SMAX …
#define SMIN …
#define GTS …
#define LOAD …
#define RAMPUP …
#define RAMPDOWN …
#define PRESCALE_512 …
#define STEPTIME_1 …
#define BRANCH …

static int stmpe_24xx_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
				 int duty_ns, int period_ns)
{ … }

static int stmpe_24xx_pwm_apply(struct pwm_chip *chip, struct pwm_device *pwm,
				const struct pwm_state *state)
{ … }

static const struct pwm_ops stmpe_24xx_pwm_ops = …;

static int __init stmpe_pwm_probe(struct platform_device *pdev)
{ … }

static struct platform_driver stmpe_pwm_driver = …;
builtin_platform_driver_probe(…);