4 * Copyright (C) 2007 MontaVista Software
6 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
14 #include <linux/types.h>
15 #include <linux/init.h>
16 #include <linux/kernel.h>
17 #include <linux/ide.h>
18 #include <linux/ioport.h>
19 #include <linux/module.h>
20 #include <linux/ata_platform.h>
21 #include <linux/platform_device.h>
24 static void __devinit plat_ide_setup_ports(hw_regs_t *hw,
27 struct pata_platform_info *pdata,
30 unsigned long port = (unsigned long)base;
33 hw->io_ports[IDE_DATA_OFFSET] = port;
35 port += (1 << pdata->ioport_shift);
36 for (i = IDE_ERROR_OFFSET; i <= IDE_STATUS_OFFSET;
37 i++, port += (1 << pdata->ioport_shift))
38 hw->io_ports[i] = port;
40 hw->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
44 hw->chipset = ide_generic;
47 static int __devinit plat_ide_probe(struct platform_device *pdev)
49 struct resource *res_base, *res_alt, *res_irq;
50 void __iomem *base, *alt_base;
52 struct pata_platform_info *pdata;
53 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
58 pdata = pdev->dev.platform_data;
60 /* get a pointer to the register memory */
61 res_base = platform_get_resource(pdev, IORESOURCE_IO, 0);
62 res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1);
64 if (!res_base || !res_alt) {
65 res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
66 res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1);
67 if (!res_base || !res_alt) {
74 res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
81 base = devm_ioremap(&pdev->dev,
82 res_base->start, res_base->end - res_base->start + 1);
83 alt_base = devm_ioremap(&pdev->dev,
84 res_alt->start, res_alt->end - res_alt->start + 1);
86 base = devm_ioport_map(&pdev->dev,
87 res_base->start, res_base->end - res_base->start + 1);
88 alt_base = devm_ioport_map(&pdev->dev,
89 res_alt->start, res_alt->end - res_alt->start + 1);
92 hwif = ide_find_port((unsigned long)base);
98 memset(&hw, 0, sizeof(hw));
99 plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
102 ide_init_port_hw(hwif, &hw);
106 default_hwif_mmiops(hwif);
109 idx[0] = hwif->index;
111 ide_device_add(idx, NULL);
113 platform_set_drvdata(pdev, hwif);
121 static int __devexit plat_ide_remove(struct platform_device *pdev)
123 ide_hwif_t *hwif = pdev->dev.driver_data;
125 ide_unregister(hwif->index, 0, 0);
130 static struct platform_driver platform_ide_driver = {
132 .name = "pata_platform",
134 .probe = plat_ide_probe,
135 .remove = __devexit_p(plat_ide_remove),
138 static int __init platform_ide_init(void)
140 return platform_driver_register(&platform_ide_driver);
143 static void __exit platform_ide_exit(void)
145 platform_driver_unregister(&platform_ide_driver);
148 MODULE_DESCRIPTION("Platform IDE driver");
149 MODULE_LICENSE("GPL");
151 module_init(platform_ide_init);
152 module_exit(platform_ide_exit);