322 lines
11 KiB
C
322 lines
11 KiB
C
/*
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* Copyright (c) 2016 Open-RnD Sp. z o.o.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file header for STM32 pin multiplexing
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*/
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#ifndef _STM32_PINMUX_H_
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#define _STM32_PINMUX_H_
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#include <stdint.h>
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#include <stddef.h>
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#include <clock_control.h>
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#include "pinmux/pinmux.h"
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/**
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* @brief numerical IDs for IO ports
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*/
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enum stm32_pin_port {
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STM32_PORTA = 0, /* IO port A */
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STM32_PORTB, /* .. */
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STM32_PORTC,
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STM32_PORTD,
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STM32_PORTE,
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STM32_PORTF,
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STM32_PORTG,
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STM32_PORTH, /* IO port H */
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};
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/* override this at soc level */
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#ifndef STM32_PORTS_MAX
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#define STM32_PORTS_MAX (STM32_PORTH + 1)
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#endif
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/**
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* @brief helper macro to encode an IO port pin in a numerical format
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*/
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#define STM32PIN(_port, _pin) \
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(_port << 4 | _pin)
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/*
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*/
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enum stm32_pin_alt_func {
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STM32_PINMUX_FUNC_ALT_0 = 0, /* GPIO */
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STM32_PINMUX_FUNC_ALT_1,
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STM32_PINMUX_FUNC_ALT_2,
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STM32_PINMUX_FUNC_ALT_3,
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STM32_PINMUX_FUNC_ALT_4,
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STM32_PINMUX_FUNC_ALT_5,
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STM32_PINMUX_FUNC_ALT_6,
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STM32_PINMUX_FUNC_ALT_7,
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STM32_PINMUX_FUNC_ALT_8,
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STM32_PINMUX_FUNC_ALT_9,
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STM32_PINMUX_FUNC_ALT_10,
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STM32_PINMUX_FUNC_ALT_11,
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STM32_PINMUX_FUNC_ALT_12,
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STM32_PINMUX_FUNC_ALT_13,
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STM32_PINMUX_FUNC_ALT_14,
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STM32_PINMUX_FUNC_ALT_15,
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STM32_PINMUX_FUNC_ALT_MAX
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};
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#define STM32_PINMUX_FUNC_GPIO 0
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#define STM32_PINMUX_FUNC_ANALOG (STM32_PINMUX_FUNC_ALT_MAX)
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#define STM32_PIN_PA0 STM32PIN(STM32_PORTA, 0)
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#define STM32_PIN_PA1 STM32PIN(STM32_PORTA, 1)
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#define STM32_PIN_PA2 STM32PIN(STM32_PORTA, 2)
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#define STM32_PIN_PA3 STM32PIN(STM32_PORTA, 3)
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#define STM32_PIN_PA4 STM32PIN(STM32_PORTA, 4)
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#define STM32_PIN_PA5 STM32PIN(STM32_PORTA, 5)
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#define STM32_PIN_PA6 STM32PIN(STM32_PORTA, 6)
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#define STM32_PIN_PA7 STM32PIN(STM32_PORTA, 7)
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#define STM32_PIN_PA8 STM32PIN(STM32_PORTA, 8)
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#define STM32_PIN_PA9 STM32PIN(STM32_PORTA, 9)
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#define STM32_PIN_PA10 STM32PIN(STM32_PORTA, 10)
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#define STM32_PIN_PA11 STM32PIN(STM32_PORTA, 11)
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#define STM32_PIN_PA12 STM32PIN(STM32_PORTA, 12)
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#define STM32_PIN_PA13 STM32PIN(STM32_PORTA, 13)
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#define STM32_PIN_PA14 STM32PIN(STM32_PORTA, 14)
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#define STM32_PIN_PA15 STM32PIN(STM32_PORTA, 15)
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#define STM32_PIN_PB0 STM32PIN(STM32_PORTB, 0)
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#define STM32_PIN_PB1 STM32PIN(STM32_PORTB, 1)
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#define STM32_PIN_PB2 STM32PIN(STM32_PORTB, 2)
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#define STM32_PIN_PB3 STM32PIN(STM32_PORTB, 3)
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#define STM32_PIN_PB4 STM32PIN(STM32_PORTB, 4)
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#define STM32_PIN_PB5 STM32PIN(STM32_PORTB, 5)
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#define STM32_PIN_PB6 STM32PIN(STM32_PORTB, 6)
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#define STM32_PIN_PB7 STM32PIN(STM32_PORTB, 7)
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#define STM32_PIN_PB8 STM32PIN(STM32_PORTB, 8)
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#define STM32_PIN_PB9 STM32PIN(STM32_PORTB, 9)
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#define STM32_PIN_PB10 STM32PIN(STM32_PORTB, 10)
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#define STM32_PIN_PB11 STM32PIN(STM32_PORTB, 11)
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#define STM32_PIN_PB12 STM32PIN(STM32_PORTB, 12)
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#define STM32_PIN_PB13 STM32PIN(STM32_PORTB, 13)
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#define STM32_PIN_PB14 STM32PIN(STM32_PORTB, 14)
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#define STM32_PIN_PB15 STM32PIN(STM32_PORTB, 15)
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#define STM32_PIN_PC0 STM32PIN(STM32_PORTC, 0)
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#define STM32_PIN_PC1 STM32PIN(STM32_PORTC, 1)
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#define STM32_PIN_PC2 STM32PIN(STM32_PORTC, 2)
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#define STM32_PIN_PC3 STM32PIN(STM32_PORTC, 3)
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#define STM32_PIN_PC4 STM32PIN(STM32_PORTC, 4)
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#define STM32_PIN_PC5 STM32PIN(STM32_PORTC, 5)
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#define STM32_PIN_PC6 STM32PIN(STM32_PORTC, 6)
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#define STM32_PIN_PC7 STM32PIN(STM32_PORTC, 7)
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#define STM32_PIN_PC8 STM32PIN(STM32_PORTC, 8)
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#define STM32_PIN_PC9 STM32PIN(STM32_PORTC, 9)
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#define STM32_PIN_PC10 STM32PIN(STM32_PORTC, 10)
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#define STM32_PIN_PC11 STM32PIN(STM32_PORTC, 11)
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#define STM32_PIN_PC12 STM32PIN(STM32_PORTC, 12)
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#define STM32_PIN_PC13 STM32PIN(STM32_PORTC, 13)
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#define STM32_PIN_PC14 STM32PIN(STM32_PORTC, 14)
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#define STM32_PIN_PC15 STM32PIN(STM32_PORTC, 15)
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#define STM32_PIN_PD0 STM32PIN(STM32_PORTD, 0)
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#define STM32_PIN_PD1 STM32PIN(STM32_PORTD, 1)
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#define STM32_PIN_PD2 STM32PIN(STM32_PORTD, 2)
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#define STM32_PIN_PD3 STM32PIN(STM32_PORTD, 3)
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#define STM32_PIN_PD4 STM32PIN(STM32_PORTD, 4)
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#define STM32_PIN_PD5 STM32PIN(STM32_PORTD, 5)
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#define STM32_PIN_PD6 STM32PIN(STM32_PORTD, 6)
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#define STM32_PIN_PD7 STM32PIN(STM32_PORTD, 7)
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#define STM32_PIN_PD8 STM32PIN(STM32_PORTD, 8)
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#define STM32_PIN_PD9 STM32PIN(STM32_PORTD, 9)
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#define STM32_PIN_PD10 STM32PIN(STM32_PORTD, 10)
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#define STM32_PIN_PD11 STM32PIN(STM32_PORTD, 11)
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#define STM32_PIN_PD12 STM32PIN(STM32_PORTD, 12)
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#define STM32_PIN_PD13 STM32PIN(STM32_PORTD, 13)
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#define STM32_PIN_PD14 STM32PIN(STM32_PORTD, 14)
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#define STM32_PIN_PD15 STM32PIN(STM32_PORTD, 15)
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#define STM32_PIN_PE0 STM32PIN(STM32_PORTE, 0)
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#define STM32_PIN_PE1 STM32PIN(STM32_PORTE, 1)
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#define STM32_PIN_PE2 STM32PIN(STM32_PORTE, 2)
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#define STM32_PIN_PE3 STM32PIN(STM32_PORTE, 3)
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#define STM32_PIN_PE4 STM32PIN(STM32_PORTE, 4)
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#define STM32_PIN_PE5 STM32PIN(STM32_PORTE, 5)
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#define STM32_PIN_PE6 STM32PIN(STM32_PORTE, 6)
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#define STM32_PIN_PE7 STM32PIN(STM32_PORTE, 7)
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#define STM32_PIN_PE8 STM32PIN(STM32_PORTE, 8)
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#define STM32_PIN_PE9 STM32PIN(STM32_PORTE, 9)
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#define STM32_PIN_PE10 STM32PIN(STM32_PORTE, 10)
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#define STM32_PIN_PE11 STM32PIN(STM32_PORTE, 11)
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#define STM32_PIN_PE12 STM32PIN(STM32_PORTE, 12)
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#define STM32_PIN_PE13 STM32PIN(STM32_PORTE, 13)
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#define STM32_PIN_PE14 STM32PIN(STM32_PORTE, 14)
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#define STM32_PIN_PE15 STM32PIN(STM32_PORTE, 15)
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#define STM32_PIN_PF0 STM32PIN(STM32_PORTF, 0)
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#define STM32_PIN_PF1 STM32PIN(STM32_PORTF, 1)
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#define STM32_PIN_PF2 STM32PIN(STM32_PORTF, 2)
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#define STM32_PIN_PF3 STM32PIN(STM32_PORTF, 3)
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#define STM32_PIN_PF4 STM32PIN(STM32_PORTF, 4)
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#define STM32_PIN_PF5 STM32PIN(STM32_PORTF, 5)
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#define STM32_PIN_PF6 STM32PIN(STM32_PORTF, 6)
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#define STM32_PIN_PF7 STM32PIN(STM32_PORTF, 7)
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#define STM32_PIN_PF8 STM32PIN(STM32_PORTF, 8)
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#define STM32_PIN_PF9 STM32PIN(STM32_PORTF, 9)
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#define STM32_PIN_PF10 STM32PIN(STM32_PORTF, 10)
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#define STM32_PIN_PF11 STM32PIN(STM32_PORTF, 11)
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#define STM32_PIN_PF12 STM32PIN(STM32_PORTF, 12)
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#define STM32_PIN_PF13 STM32PIN(STM32_PORTF, 13)
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#define STM32_PIN_PF14 STM32PIN(STM32_PORTF, 14)
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#define STM32_PIN_PF15 STM32PIN(STM32_PORTF, 15)
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#define STM32_PIN_PG0 STM32PIN(STM32_PORTG, 0)
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#define STM32_PIN_PG1 STM32PIN(STM32_PORTG, 1)
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#define STM32_PIN_PG2 STM32PIN(STM32_PORTG, 2)
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#define STM32_PIN_PG3 STM32PIN(STM32_PORTG, 3)
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#define STM32_PIN_PG4 STM32PIN(STM32_PORTG, 4)
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#define STM32_PIN_PG5 STM32PIN(STM32_PORTG, 5)
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#define STM32_PIN_PG6 STM32PIN(STM32_PORTG, 6)
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#define STM32_PIN_PG7 STM32PIN(STM32_PORTG, 7)
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#define STM32_PIN_PG8 STM32PIN(STM32_PORTG, 8)
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#define STM32_PIN_PG9 STM32PIN(STM32_PORTG, 9)
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#define STM32_PIN_PG10 STM32PIN(STM32_PORTG, 10)
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#define STM32_PIN_PG11 STM32PIN(STM32_PORTG, 11)
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#define STM32_PIN_PG12 STM32PIN(STM32_PORTG, 12)
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#define STM32_PIN_PG13 STM32PIN(STM32_PORTG, 13)
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#define STM32_PIN_PG14 STM32PIN(STM32_PORTG, 14)
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#define STM32_PIN_PG15 STM32PIN(STM32_PORTG, 15)
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#define STM32_PIN_PH0 STM32PIN(STM32_PORTH, 0)
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#define STM32_PIN_PH1 STM32PIN(STM32_PORTH, 1)
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#define STM32_PIN_PH2 STM32PIN(STM32_PORTH, 2)
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#define STM32_PIN_PH3 STM32PIN(STM32_PORTH, 3)
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#define STM32_PIN_PH4 STM32PIN(STM32_PORTH, 4)
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#define STM32_PIN_PH5 STM32PIN(STM32_PORTH, 5)
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#define STM32_PIN_PH6 STM32PIN(STM32_PORTH, 6)
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#define STM32_PIN_PH7 STM32PIN(STM32_PORTH, 7)
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#define STM32_PIN_PH8 STM32PIN(STM32_PORTH, 8)
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#define STM32_PIN_PH9 STM32PIN(STM32_PORTH, 9)
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#define STM32_PIN_PH10 STM32PIN(STM32_PORTH, 10)
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#define STM32_PIN_PH11 STM32PIN(STM32_PORTH, 11)
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#define STM32_PIN_PH12 STM32PIN(STM32_PORTH, 12)
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#define STM32_PIN_PH13 STM32PIN(STM32_PORTH, 13)
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#define STM32_PIN_PH14 STM32PIN(STM32_PORTH, 14)
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#define STM32_PIN_PH15 STM32PIN(STM32_PORTH, 15)
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/* pretend that array will cover pin functions */
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typedef int stm32_pin_func_t;
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/**
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* @brief pinmux config wrapper
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*
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* GPIO function is assumed to be always available, as such it's not listed
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* in @funcs array
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*/
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struct stm32_pinmux_conf {
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uint32_t pin; /* pin ID */
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const stm32_pin_func_t *funcs; /* functions array, indexed with
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* (stm32_pin_alt_func - 1)
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*/
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const size_t nfuncs; /* number of alternate functions, not
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* counting GPIO
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*/
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};
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/**
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* @brief helper to define pins
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*/
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#define STM32_PIN_CONF(__pin, __funcs) \
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{__pin, __funcs, ARRAY_SIZE(__funcs)}
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/**
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* @brief helper to extract IO port number from STM32PIN() encoded
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* value
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*/
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#define STM32_PORT(__pin) \
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(__pin >> 4)
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/**
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* @brief helper to extract IO pin number from STM32PIN() encoded
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* value
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*/
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#define STM32_PIN(__pin) \
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(__pin & 0xf)
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/**
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* @brief helper for mapping pin function to its configuration
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*
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* @param pin pin ID encoded with STM32PIN()
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* @param func alternate function ID
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*
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* Helper function for mapping alternate function for given pin to its
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* configuration. This function must be implemented by SoC integartion
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* code.
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*
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* @return SoC specific pin configuration
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*/
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int stm32_get_pin_config(int pin, int func);
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/**
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* @brief helper for mapping IO port to its clock subsystem
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*
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* @param port IO port
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*
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* Map given IO @port to corresponding clock subsystem. The returned
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* clock subsystemd ID must suitable for passing as parameter to
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* clock_control_on(). Implement this function at the SoC level.
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*
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* @return clock subsystem ID
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*/
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clock_control_subsys_t stm32_get_port_clock(int port);
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/**
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* @brief helper for configuration of IO pin
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*
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* @param pin IO pin, STM32PIN() encoded
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* @param func IO function encoded
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* @param clk clock control device, for enabling/disabling clock gate
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* for the port
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*/
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int _pinmux_stm32_set(uint32_t pin, uint32_t func,
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struct device *clk);
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/**
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* @brief helper for obtaining pin configuration for the board
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*
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* @param[out] pins set to the number of pins in the array
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*
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* Obtain pin assignment/configuration for current board. This call
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* needs to be implemented at the board integration level. After
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* restart all pins are already configured as GPIO and can be skipped
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* in the configuration arrray. Pin numbers in @pin_num field are
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* STM32PIN() encoded.
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*
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* @return array of pin assignments
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*/
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void stm32_setup_pins(const struct pin_config *pinconf,
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size_t pins);
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/* common pinmux device name for all STM32 chips */
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#define STM32_PINMUX_NAME "stm32-pinmux"
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#ifdef CONFIG_SOC_SERIES_STM32F1X
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#include "pinmux_stm32f1.h"
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#elif CONFIG_SOC_SERIES_STM32F4X
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#include "pinmux_stm32f4.h"
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#endif
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#ifdef CONFIG_SOC_SERIES_STM32L4X
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#include "pinmux_stm32l4x.h"
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#endif
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#endif /* _STM32_PINMUX_H_ */
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