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