Commit-ID: e81e11bc71573709352a5275e175a4b2ee1325e5 Gitweb: http://git.kernel.org/tip/e81e11bc71573709352a5275e175a4b2ee1325e5 Author: Andy Shevchenko <[email protected]> AuthorDate: Tue, 5 Jul 2016 03:14:50 +0300 Committer: Ingo Molnar <[email protected]> CommitDate: Fri, 8 Jul 2016 11:15:34 +0200
x86/platform/intel-mid: Enable spidev on Intel Edison boards Intel Edison board provides one of the SPI bus for user's connected devices. Append platform data to get spidev enumerated over it. Signed-off-by: Andy Shevchenko <[email protected]> Cc: Dan O'Donovan <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/1467677690-90007-1-git-send-email-andriy.shevche...@linux.intel.com Signed-off-by: Ingo Molnar <[email protected]> --- arch/x86/platform/intel-mid/device_libs/Makefile | 2 + .../intel-mid/device_libs/platform_spidev.c | 50 ++++++++++++++++++++++ 2 files changed, 52 insertions(+) diff --git a/arch/x86/platform/intel-mid/device_libs/Makefile b/arch/x86/platform/intel-mid/device_libs/Makefile index 79e97ed..fc135bf 100644 --- a/arch/x86/platform/intel-mid/device_libs/Makefile +++ b/arch/x86/platform/intel-mid/device_libs/Makefile @@ -10,6 +10,8 @@ obj-$(subst m,y,$(CONFIG_MFD_INTEL_MSIC)) += platform_msic_battery.o obj-$(subst m,y,$(CONFIG_INTEL_MID_POWER_BUTTON)) += platform_msic_power_btn.o obj-$(subst m,y,$(CONFIG_GPIO_INTEL_PMIC)) += platform_pmic_gpio.o obj-$(subst m,y,$(CONFIG_INTEL_MFLD_THERMAL)) += platform_msic_thermal.o +# SPI Devices +obj-$(subst m,y,$(CONFIG_SPI_SPIDEV)) += platform_spidev.o # I2C Devices obj-$(subst m,y,$(CONFIG_SENSORS_EMC1403)) += platform_emc1403.o obj-$(subst m,y,$(CONFIG_SENSORS_LIS3LV02D)) += platform_lis331.o 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 0000000..30c601b --- /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 <[email protected]> + * Dan O'Donovan <[email protected]> + * + * 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);
