xilinx_spi: add a platform driver using the xilinx_spi common module. (77166934) · Commits · e / devices / android_kernel_fairphone_FP3

drivers/spi/Kconfig

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		@@ -261,6 +261,13 @@ config SPI_XILINX_OF
		help
		This is the OF driver for the SPI controller IP from the Xilinx EDK.

		config SPI_XILINX_PLTFM
		tristate "Xilinx SPI controller platform device"
		depends on SPI_XILINX
		help
		This is the platform driver for the SPI controller IP
		from the Xilinx EDK.

		#
		# Add new SPI master controllers in alphabetical order above this line
		#

drivers/spi/Makefile

+1 −0

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		@@ -33,6 +33,7 @@ obj-$(CONFIG_SPI_S3C24XX) += spi_s3c24xx.o
		obj-$(CONFIG_SPI_TXX9) += spi_txx9.o
		obj-$(CONFIG_SPI_XILINX) += xilinx_spi.o
		obj-$(CONFIG_SPI_XILINX_OF) += xilinx_spi_of.o
		obj-$(CONFIG_SPI_XILINX_PLTFM) += xilinx_spi_pltfm.o
		obj-$(CONFIG_SPI_SH_SCI) += spi_sh_sci.o
		obj-$(CONFIG_SPI_STMP3XXX) += spi_stmp.o
		# ... add above this line ...

drivers/spi/xilinx_spi_pltfm.c

0 → 100644

+102 −0

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		/*
		* Support for Xilinx SPI platform devices
		* Copyright (c) 2009 Intel Corporation
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 as
		* published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
		*/

		/* Supports:
		* Xilinx SPI devices as platform devices
		*
		* Inspired by xilinx_spi.c, 2002-2007 (c) MontaVista Software, Inc.
		*/

		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/interrupt.h>
		#include <linux/io.h>
		#include <linux/platform_device.h>

		#include <linux/spi/spi.h>
		#include <linux/spi/spi_bitbang.h>
		#include <linux/spi/xilinx_spi.h>

		#include "xilinx_spi.h"

		static int __devinit xilinx_spi_probe(struct platform_device *dev)
		{
		struct xspi_platform_data *pdata;
		struct resource *r;
		int irq;
		struct spi_master *master;
		u8 i;

		pdata = dev->dev.platform_data;
		if (!pdata)
		return -ENODEV;

		r = platform_get_resource(dev, IORESOURCE_MEM, 0);
		if (!r)
		return -ENODEV;

		irq = platform_get_irq(dev, 0);
		if (irq < 0)
		return -ENXIO;

		master = xilinx_spi_init(&dev->dev, r, irq, dev->id);
		if (!master)
		return -ENODEV;

		for (i = 0; i < pdata->num_devices; i++)
		spi_new_device(master, pdata->devices + i);

		platform_set_drvdata(dev, master);
		return 0;
		}

		static int __devexit xilinx_spi_remove(struct platform_device *dev)
		{
		xilinx_spi_deinit(platform_get_drvdata(dev));
		platform_set_drvdata(dev, 0);

		return 0;
		}

		/* work with hotplug and coldplug */
		MODULE_ALIAS("platform:" XILINX_SPI_NAME);

		static struct platform_driver xilinx_spi_driver = {
		.probe = xilinx_spi_probe,
		.remove = __devexit_p(xilinx_spi_remove),
		.driver = {
		.name = XILINX_SPI_NAME,
		.owner = THIS_MODULE,
		},
		};

		static int __init xilinx_spi_pltfm_init(void)
		{
		return platform_driver_register(&xilinx_spi_driver);
		}
		module_init(xilinx_spi_pltfm_init);

		static void __exit xilinx_spi_pltfm_exit(void)
		{
		platform_driver_unregister(&xilinx_spi_driver);
		}
		module_exit(xilinx_spi_pltfm_exit);

		MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
		MODULE_DESCRIPTION("Xilinx SPI platform driver");
		MODULE_LICENSE("GPL v2");