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https://github.com/ARM-software/arm-trusted-firmware.git
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d604ac4831
This commit adds GPIO driver for RaspberryPi3. The GPIO driver for RPi3 also provides the way to do pinmux selections. Signed-off-by: Ying-Chun Liu (PaulLiu) <paulliu@debian.org>
38 lines
1 KiB
C
38 lines
1 KiB
C
/*
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* Copyright (c) 2019, Linaro Limited
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* Copyright (c) 2019, Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org>
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef RPI3_GPIO_H
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#define RPI3_GPIO_H
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#include <stdint.h>
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#include <drivers/gpio.h>
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struct rpi3_gpio_params {
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uintptr_t reg_base;
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};
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void rpi3_gpio_init(struct rpi3_gpio_params *params);
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int rpi3_gpio_get_select(int gpio);
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void rpi3_gpio_set_select(int gpio, int fsel);
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#define RPI3_GPIO_GPFSEL(n) ((n) * U(0x04))
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#define RPI3_GPIO_GPSET(n) (((n) * U(0x04)) + U(0x1C))
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#define RPI3_GPIO_GPCLR(n) (((n) * U(0x04)) + U(0x28))
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#define RPI3_GPIO_GPLEV(n) (((n) * U(0x04)) + U(0x34))
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#define RPI3_GPIO_GPPUD U(0x94)
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#define RPI3_GPIO_GPPUDCLK(n) (((n) * U(0x04)) + U(0x98))
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#define RPI3_GPIO_FUNC_INPUT U(0)
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#define RPI3_GPIO_FUNC_OUTPUT U(1)
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#define RPI3_GPIO_FUNC_ALT0 U(4)
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#define RPI3_GPIO_FUNC_ALT1 U(5)
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#define RPI3_GPIO_FUNC_ALT2 U(6)
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#define RPI3_GPIO_FUNC_ALT3 U(7)
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#define RPI3_GPIO_FUNC_ALT4 U(3)
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#define RPI3_GPIO_FUNC_ALT5 U(2)
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#endif /* RPI3_GPIO_H */
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