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/* SPDX-License-Identifier: GPL-2.0 */
/*
* STM32 Low-Power Timer parent driver.
* Copyright (C) STMicroelectronics 2017
* Author: Fabrice Gasnier <fabrice.gasnier@st.com>
* Inspired by Benjamin Gaignard's stm32-timers driver
*/
#ifndef _LINUX_STM32_LPTIMER_H_
#define _LINUX_STM32_LPTIMER_H_
#include <linux/clk.h>
#include <linux/regmap.h>
#define STM32_LPTIM_ISR 0x00 /* Interrupt and Status Reg */
#define STM32_LPTIM_ICR 0x04 /* Interrupt Clear Reg */
#define STM32_LPTIM_IER 0x08 /* Interrupt Enable Reg */
#define STM32_LPTIM_CFGR 0x0C /* Configuration Reg */
#define STM32_LPTIM_CR 0x10 /* Control Reg */
#define STM32_LPTIM_CMP 0x14 /* Compare Reg */
#define STM32_LPTIM_ARR 0x18 /* Autoreload Reg */
#define STM32_LPTIM_CNT 0x1C /* Counter Reg */
/* STM32_LPTIM_ISR - bit fields */
#define STM32_LPTIM_CMPOK_ARROK GENMASK(4, 3)
#define STM32_LPTIM_ARROK BIT(4)
#define STM32_LPTIM_CMPOK BIT(3)
/* STM32_LPTIM_ICR - bit fields */
#define STM32_LPTIM_CMPOKCF_ARROKCF GENMASK(4, 3)
/* STM32_LPTIM_CR - bit fields */
#define STM32_LPTIM_CNTSTRT BIT(2)
#define STM32_LPTIM_ENABLE BIT(0)
/* STM32_LPTIM_CFGR - bit fields */
#define STM32_LPTIM_ENC BIT(24)
#define STM32_LPTIM_COUNTMODE BIT(23)
#define STM32_LPTIM_WAVPOL BIT(21)
#define STM32_LPTIM_PRESC GENMASK(11, 9)
#define STM32_LPTIM_CKPOL GENMASK(2, 1)
/* STM32_LPTIM_ARR */
#define STM32_LPTIM_MAX_ARR 0xFFFF
/**
* struct stm32_lptimer - STM32 Low-Power Timer data assigned by parent device
* @clk: clock reference for this instance
* @regmap: register map reference for this instance
* @has_encoder: indicates this Low-Power Timer supports encoder mode
*/
struct stm32_lptimer {
struct clk *clk;
struct regmap *regmap;
bool has_encoder;
};
#endif
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