diff options
Diffstat (limited to 'drivers/spi/xilinx_spi_of.c')
| -rw-r--r-- | drivers/spi/xilinx_spi_of.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/drivers/spi/xilinx_spi_of.c b/drivers/spi/xilinx_spi_of.c deleted file mode 100644 index b66c2dbf20a..00000000000 --- a/drivers/spi/xilinx_spi_of.c +++ /dev/null @@ -1,133 +0,0 @@ -/* - * Xilinx SPI OF device driver - * - * 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 OF 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/slab.h> - -#include <linux/of_address.h> -#include <linux/of_platform.h> -#include <linux/of_device.h> -#include <linux/of_spi.h> - -#include <linux/spi/xilinx_spi.h> -#include "xilinx_spi.h" - - -static int __devinit xilinx_spi_of_probe(struct platform_device *ofdev, - const struct of_device_id *match) -{ - struct spi_master *master; - struct xspi_platform_data *pdata; - struct resource r_mem; - struct resource r_irq; - int rc = 0; - const u32 *prop; - int len; - - rc = of_address_to_resource(ofdev->dev.of_node, 0, &r_mem); - if (rc) { - dev_warn(&ofdev->dev, "invalid address\n"); - return rc; - } - - rc = of_irq_to_resource(ofdev->dev.of_node, 0, &r_irq); - if (rc == NO_IRQ) { - dev_warn(&ofdev->dev, "no IRQ found\n"); - return -ENODEV; - } - - ofdev->dev.platform_data = - kzalloc(sizeof(struct xspi_platform_data), GFP_KERNEL); - pdata = ofdev->dev.platform_data; - if (!pdata) - return -ENOMEM; - - /* number of slave select bits is required */ - prop = of_get_property(ofdev->dev.of_node, "xlnx,num-ss-bits", &len); - if (!prop || len < sizeof(*prop)) { - dev_warn(&ofdev->dev, "no 'xlnx,num-ss-bits' property\n"); - return -EINVAL; - } - pdata->num_chipselect = *prop; - pdata->bits_per_word = 8; - master = xilinx_spi_init(&ofdev->dev, &r_mem, r_irq.start, -1); - if (!master) - return -ENODEV; - - dev_set_drvdata(&ofdev->dev, master); - - return 0; -} - -static int __devexit xilinx_spi_remove(struct platform_device *ofdev) -{ - xilinx_spi_deinit(dev_get_drvdata(&ofdev->dev)); - dev_set_drvdata(&ofdev->dev, 0); - kfree(ofdev->dev.platform_data); - ofdev->dev.platform_data = NULL; - return 0; -} - -static int __exit xilinx_spi_of_remove(struct platform_device *op) -{ - return xilinx_spi_remove(op); -} - -static const struct of_device_id xilinx_spi_of_match[] = { - { .compatible = "xlnx,xps-spi-2.00.a", }, - { .compatible = "xlnx,xps-spi-2.00.b", }, - {} -}; - -MODULE_DEVICE_TABLE(of, xilinx_spi_of_match); - -static struct of_platform_driver xilinx_spi_of_driver = { - .probe = xilinx_spi_of_probe, - .remove = __exit_p(xilinx_spi_of_remove), - .driver = { - .name = "xilinx-xps-spi", - .owner = THIS_MODULE, - .of_match_table = xilinx_spi_of_match, - }, -}; - -static int __init xilinx_spi_of_init(void) -{ - return of_register_platform_driver(&xilinx_spi_of_driver); -} -module_init(xilinx_spi_of_init); - -static void __exit xilinx_spi_of_exit(void) -{ - of_unregister_platform_driver(&xilinx_spi_of_driver); -} -module_exit(xilinx_spi_of_exit); - -MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>"); -MODULE_DESCRIPTION("Xilinx SPI platform driver"); -MODULE_LICENSE("GPL v2"); |