/*
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* spidev platform data initilization file
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*
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* (C) Copyright 2014, 2016 Intel Corporation
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* Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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* Dan O'Donovan <dan@emutex.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; version 2
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* of the License.
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*/
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/sfi.h>
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#include <linux/spi/pxa2xx_spi.h>
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#include <linux/spi/spi.h>
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#include <asm/intel-mid.h>
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#define MRFLD_SPI_DEFAULT_DMA_BURST 8
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#define MRFLD_SPI_DEFAULT_TIMEOUT 500
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/* GPIO pin for spidev chipselect */
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#define MRFLD_SPIDEV_GPIO_CS 111
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static struct pxa2xx_spi_chip spidev_spi_chip = {
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.dma_burst_size = MRFLD_SPI_DEFAULT_DMA_BURST,
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.timeout = MRFLD_SPI_DEFAULT_TIMEOUT,
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.gpio_cs = MRFLD_SPIDEV_GPIO_CS,
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};
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static void __init *spidev_platform_data(void *info)
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{
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struct spi_board_info *spi_info = info;
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if (intel_mid_identify_cpu() != INTEL_MID_CPU_CHIP_TANGIER)
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return ERR_PTR(-ENODEV);
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spi_info->mode = SPI_MODE_0;
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spi_info->controller_data = &spidev_spi_chip;
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return NULL;
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}
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static const struct devs_id spidev_dev_id __initconst = {
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.name = "spidev",
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.type = SFI_DEV_TYPE_SPI,
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.delay = 0,
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.get_platform_data = &spidev_platform_data,
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};
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sfi_device(spidev_dev_id);
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