139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/****************************************************************************
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* boards/arm/mx8mp/verdin-mx8mp/src/mx8mp_spidev.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. 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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <debug.h>
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#include <nuttx/spi/spi_transfer.h>
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#include "arm_internal.h"
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#include "chip.h"
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#include "mx8mp_ecspi.h"
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#include "verdin-mx8mp.h"
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#include <arch/board/board.h>
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_spidev_initialize
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*
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* Description:
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* Initialize and register spi driver for the specified spi port
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*
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****************************************************************************/
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int board_spidev_initialize(int port)
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{
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int ret;
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struct spi_dev_s *spi;
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spiinfo("Initializing /dev/spi%d..\n", port);
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/* Initialize spi device */
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spi = mx8mp_spibus_initialize(port);
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if (!spi)
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{
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i2cerr("ERROR: Failed to initialize spi%d.\n", port);
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return -ENODEV;
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}
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ret = spi_register(spi, port);
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if (ret < 0)
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{
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i2cerr("ERROR: Failed to register spi%d: %d\n", port, ret);
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}
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return ret;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mx8mp_spidev_initialize
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*
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* Description:
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* Called to configure all spi drivers
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*
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****************************************************************************/
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int mx8mp_spidev_initialize(void)
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{
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int ret = 0;
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#ifdef CONFIG_MX8MP_SPI1
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mx8mp_iomuxc_config(IOMUX_SPI1_MISO);
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mx8mp_iomuxc_config(IOMUX_SPI1_MOSI);
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mx8mp_iomuxc_config(IOMUX_SPI1_CLK);
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mx8mp_iomuxc_config(IOMUX_SPI1_CS);
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ret = board_spidev_initialize(1);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C1.\n");
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return ret;
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}
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#endif
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#ifdef CONFIG_MX8MP_SPI2
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mx8mp_iomuxc_config(IOMUXC_SPI2_MISO);
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mx8mp_iomuxc_config(IOMUXC_SPI2_MOSI);
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mx8mp_iomuxc_config(IOMUXC_SPI2_CLK);
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mx8mp_iomuxc_config(IOMUXC_SPI2_CS);
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mx8mp_gpio_config(GPIO_SPI2_CS);
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ret = board_spidev_initialize(2);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C2.\n");
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return ret;
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}
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#endif
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#ifdef CONFIG_MX8MP_SPI3
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mx8mp_iomuxc_config(IOMUXC_SPI3_MISO);
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mx8mp_iomuxc_config(IOMUXC_SPI3_MOSI);
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mx8mp_iomuxc_config(IOMUXC_SPI3_CLK);
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mx8mp_iomuxc_config(IOMUXC_SPI3_CS);
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mx8mp_gpio_config(GPIO_SPI3_CS);
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ret = board_spidev_initialize(3);
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize I2C3.\n");
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return ret;
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}
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#endif
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return ret;
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}
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