stm32h7/start/stm32h7-hal-sdmmc.c

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (C) 2020 embedded brains GmbH & Co. KG
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #ifdef HAVE_CONFIG_H
0029 #include "config.h"
0030 #endif
0031
0032 #include <stm32h7/hal.h>
0033
0034 static const stm32h7_gpio_config gpiob = {
0035   .regs = GPIOB,
0036   .config = {
0037     .Pin = GPIO_PIN_8 | GPIO_PIN_9,
0038     .Mode = GPIO_MODE_AF_PP,
0039     .Pull = GPIO_NOPULL,
0040     .Speed = GPIO_SPEED_FREQ_VERY_HIGH,
0041     .Alternate = GPIO_AF7_SDMMC1
0042   }
0043 };
0044
0045 static const stm32h7_gpio_config gpioc_af12 = {
0046   .regs = GPIOC,
0047   .config = {
0048     .Pin = GPIO_PIN_8 | GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11 | GPIO_PIN_12,
0049     .Mode = GPIO_MODE_AF_PP,
0050     .Pull = GPIO_NOPULL,
0051     .Speed = GPIO_SPEED_FREQ_VERY_HIGH,
0052     .Alternate = GPIO_AF12_SDMMC1
0053   }
0054 };
0055
0056 static const stm32h7_gpio_config gpioc_af8 = {
0057   .regs = GPIOC,
0058   .config = {
0059     .Pin = GPIO_PIN_6 | GPIO_PIN_7,
0060     .Mode = GPIO_MODE_AF_PP,
0061     .Pull = GPIO_NOPULL,
0062     .Speed = GPIO_SPEED_FREQ_VERY_HIGH,
0063     .Alternate = GPIO_AF8_SDMMC1
0064   }
0065 };
0066
0067 static const stm32h7_gpio_config gpiod = {
0068   .regs = GPIOD,
0069   .config = {
0070     .Pin = GPIO_PIN_2,
0071     .Mode = GPIO_MODE_AF_PP,
0072     .Pull = GPIO_NOPULL,
0073     .Speed = GPIO_SPEED_FREQ_VERY_HIGH,
0074     .Alternate = GPIO_AF12_SDMMC1
0075   }
0076 };
0077
0078 void
0079 HAL_SD_MspInit(SD_HandleTypeDef *hsd)
0080 {
0081   stm32h7_clk_enable(STM32H7_MODULE_SDMMC1);
0082   stm32h7_gpio_init(&gpiob);
0083   stm32h7_gpio_init(&gpioc_af12);
0084   stm32h7_gpio_init(&gpioc_af8);
0085   stm32h7_gpio_init(&gpiod);
0086   __HAL_RCC_SDMMC1_FORCE_RESET();
0087   __HAL_RCC_SDMMC1_RELEASE_RESET();
0088 }