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.data_addr = port;
35 port += (1 << pdata->ioport_shift);
37 i++, port += (1 << pdata->ioport_shift))
38 hw->io_ports_array[i] = port;
40 hw->io_ports.ctl_addr = (unsigned long)ctrl;
44 hw->chipset = ide_generic;
47 static const struct ide_port_info platform_ide_port_info = {
48 .host_flags = IDE_HFLAG_NO_DMA,
51 static int __devinit plat_ide_probe(struct platform_device *pdev)
53 struct resource *res_base, *res_alt, *res_irq;
54 void __iomem *base, *alt_base;
56 struct pata_platform_info *pdata;
57 int ret = 0, mmio = 0;
58 hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
59 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
60 struct ide_port_info d = platform_ide_port_info;
62 pdata = pdev->dev.platform_data;
64 /* get a pointer to the register memory */
65 res_base = platform_get_resource(pdev, IORESOURCE_IO, 0);
66 res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1);
68 if (!res_base || !res_alt) {
69 res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
70 res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1);
71 if (!res_base || !res_alt) {
78 res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
85 base = devm_ioremap(&pdev->dev,
86 res_base->start, res_base->end - res_base->start + 1);
87 alt_base = devm_ioremap(&pdev->dev,
88 res_alt->start, res_alt->end - res_alt->start + 1);
90 base = devm_ioport_map(&pdev->dev,
91 res_base->start, res_base->end - res_base->start + 1);
92 alt_base = devm_ioport_map(&pdev->dev,
93 res_alt->start, res_alt->end - res_alt->start + 1);
96 hwif = ide_find_port();
102 memset(&hw, 0, sizeof(hw));
103 plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
107 d.host_flags |= IDE_HFLAG_MMIO;
108 default_hwif_mmiops(hwif);
111 idx[0] = hwif->index;
113 ide_device_add(idx, &d, hws);
115 platform_set_drvdata(pdev, hwif);
123 static int __devexit plat_ide_remove(struct platform_device *pdev)
125 ide_hwif_t *hwif = pdev->dev.driver_data;
127 ide_unregister(hwif);
132 static struct platform_driver platform_ide_driver = {
134 .name = "pata_platform",
135 .owner = THIS_MODULE,
137 .probe = plat_ide_probe,
138 .remove = __devexit_p(plat_ide_remove),
141 static int __init platform_ide_init(void)
143 return platform_driver_register(&platform_ide_driver);
146 static void __exit platform_ide_exit(void)
148 platform_driver_unregister(&platform_ide_driver);
151 MODULE_DESCRIPTION("Platform IDE driver");
152 MODULE_LICENSE("GPL");
153 MODULE_ALIAS("platform:pata_platform");
155 module_init(platform_ide_init);
156 module_exit(platform_ide_exit);