diff options
Diffstat (limited to 'arch/x86/platform/intel-mid/device_libs/platform_spidev.c')
-rw-r--r-- | arch/x86/platform/intel-mid/device_libs/platform_spidev.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_spidev.c b/arch/x86/platform/intel-mid/device_libs/platform_spidev.c new file mode 100644 index 000000000..30c601b39 --- /dev/null +++ b/arch/x86/platform/intel-mid/device_libs/platform_spidev.c @@ -0,0 +1,50 @@ +/* + * spidev platform data initilization 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/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; + + 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); |