[mirror_ubuntu-bionic-kernel.git] / include / linux / mfd / stm32-lptimer.h

/*
 * 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
 *
 * License terms:  GNU General Public License (GPL), version 2
 */

#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
Commit	Line	Data
e8924005 FG	1	/*
	2	* STM32 Low-Power Timer parent driver.
	3	*
	4	* Copyright (C) STMicroelectronics 2017
	5	*
	6	* Author: Fabrice Gasnier <fabrice.gasnier@st.com>
	7	*
	8	* Inspired by Benjamin Gaignard's stm32-timers driver
	9	*
	10	* License terms: GNU General Public License (GPL), version 2
	11	*/
	12
	13	#ifndef _LINUX_STM32_LPTIMER_H_
	14	#define _LINUX_STM32_LPTIMER_H_
	15
	16	#include <linux/clk.h>
	17	#include <linux/regmap.h>
	18
	19	#define STM32_LPTIM_ISR 0x00 /* Interrupt and Status Reg */
	20	#define STM32_LPTIM_ICR 0x04 /* Interrupt Clear Reg */
	21	#define STM32_LPTIM_IER 0x08 /* Interrupt Enable Reg */
	22	#define STM32_LPTIM_CFGR 0x0C /* Configuration Reg */
	23	#define STM32_LPTIM_CR 0x10 /* Control Reg */
	24	#define STM32_LPTIM_CMP 0x14 /* Compare Reg */
	25	#define STM32_LPTIM_ARR 0x18 /* Autoreload Reg */
	26	#define STM32_LPTIM_CNT 0x1C /* Counter Reg */
	27
	28	/* STM32_LPTIM_ISR - bit fields */
	29	#define STM32_LPTIM_CMPOK_ARROK GENMASK(4, 3)
	30	#define STM32_LPTIM_ARROK BIT(4)
	31	#define STM32_LPTIM_CMPOK BIT(3)
	32
	33	/* STM32_LPTIM_ICR - bit fields */
	34	#define STM32_LPTIM_CMPOKCF_ARROKCF GENMASK(4, 3)
	35
	36	/* STM32_LPTIM_CR - bit fields */
	37	#define STM32_LPTIM_CNTSTRT BIT(2)
	38	#define STM32_LPTIM_ENABLE BIT(0)
	39
	40	/* STM32_LPTIM_CFGR - bit fields */
	41	#define STM32_LPTIM_ENC BIT(24)
	42	#define STM32_LPTIM_COUNTMODE BIT(23)
	43	#define STM32_LPTIM_WAVPOL BIT(21)
	44	#define STM32_LPTIM_PRESC GENMASK(11, 9)
	45	#define STM32_LPTIM_CKPOL GENMASK(2, 1)
	46
	47	/* STM32_LPTIM_ARR */
	48	#define STM32_LPTIM_MAX_ARR 0xFFFF
	49
	50	/**
	51	* struct stm32_lptimer - STM32 Low-Power Timer data assigned by parent device
	52	* @clk: clock reference for this instance
	53	* @regmap: register map reference for this instance
	54	* @has_encoder: indicates this Low-Power Timer supports encoder mode
	55	*/
	56	struct stm32_lptimer {
	57	struct clk *clk;
	58	struct regmap *regmap;
	59	bool has_encoder;
	60	};
	61
	62	#endif