linux/drivers/pwm/pwm-stm32-lp.c

// SPDX-License-Identifier: GPL-2.0
/*
 * STM32 Low-Power Timer PWM driver
 *
 * Copyright (C) STMicroelectronics 2017
 *
 * Author: Gerald Baeza <[email protected]>
 *
 * Inspired by Gerald Baeza's pwm-stm32 driver
 */

#include <linux/bitfield.h>
#include <linux/mfd/stm32-lptimer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/pwm.h>

struct stm32_pwm_lp { … };

static inline struct stm32_pwm_lp *to_stm32_pwm_lp(struct pwm_chip *chip)
{ … }

/* STM32 Low-Power Timer is preceded by a configurable power-of-2 prescaler */
#define STM32_LPTIM_MAX_PRESCALER …

static int stm32_pwm_lp_apply(struct pwm_chip *chip, struct pwm_device *pwm,
			      const struct pwm_state *state)
{ … }

static int stm32_pwm_lp_get_state(struct pwm_chip *chip,
				  struct pwm_device *pwm,
				  struct pwm_state *state)
{ … }

static const struct pwm_ops stm32_pwm_lp_ops = …;

static int stm32_pwm_lp_probe(struct platform_device *pdev)
{ … }

static int stm32_pwm_lp_suspend(struct device *dev)
{ … }

static int stm32_pwm_lp_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(stm32_pwm_lp_pm_ops, stm32_pwm_lp_suspend,
				stm32_pwm_lp_resume);

static const struct of_device_id stm32_pwm_lp_of_match[] = …;
MODULE_DEVICE_TABLE(of, stm32_pwm_lp_of_match);

static struct platform_driver stm32_pwm_lp_driver = …;
module_platform_driver(…) …;

MODULE_ALIAS(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;