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stm32-lptimer.h
/* 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_ARRMCF BIT(1) #define STM32_LPTIM_CMPOKCF_ARROKCF GENMASK(4, 3) /* STM32_LPTIM_IER - bit flieds */ #define STM32_LPTIM_ARRMIE BIT(1) /* STM32_LPTIM_CR - bit fields */ #define STM32_LPTIM_CNTSTRT BIT(2) #define STM32_LPTIM_SNGSTRT BIT(1) #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_CKPOL */ #define STM32_LPTIM_CKPOL_RISING_EDGE 0 #define STM32_LPTIM_CKPOL_FALLING_EDGE 1 #define STM32_LPTIM_CKPOL_BOTH_EDGES 2 /* 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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