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(struct ide_hw *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;
45 static const struct ide_port_info platform_ide_port_info = {
46 .host_flags = IDE_HFLAG_NO_DMA,
47 .chipset = ide_generic,
50 static int __devinit plat_ide_probe(struct platform_device *pdev)
52 struct resource *res_base, *res_alt, *res_irq;
53 void __iomem *base, *alt_base;
54 struct pata_platform_info *pdata;
55 struct ide_host *host;
56 int ret = 0, mmio = 0;
57 struct ide_hw hw, *hws[] = { &hw };
58 struct ide_port_info d = platform_ide_port_info;
60 pdata = pdev->dev.platform_data;
62 /* get a pointer to the register memory */
63 res_base = platform_get_resource(pdev, IORESOURCE_IO, 0);
64 res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1);
66 if (!res_base || !res_alt) {
67 res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
68 res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1);
69 if (!res_base || !res_alt) {
76 res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
83 base = devm_ioremap(&pdev->dev,
84 res_base->start, res_base->end - res_base->start + 1);
85 alt_base = devm_ioremap(&pdev->dev,
86 res_alt->start, res_alt->end - res_alt->start + 1);
88 base = devm_ioport_map(&pdev->dev,
89 res_base->start, res_base->end - res_base->start + 1);
90 alt_base = devm_ioport_map(&pdev->dev,
91 res_alt->start, res_alt->end - res_alt->start + 1);
94 memset(&hw, 0, sizeof(hw));
95 plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
99 d.host_flags |= IDE_HFLAG_MMIO;
101 ret = ide_host_add(&d, hws, 1, &host);
105 platform_set_drvdata(pdev, host);
113 static int __devexit plat_ide_remove(struct platform_device *pdev)
115 struct ide_host *host = dev_get_drvdata(&pdev->dev);
117 ide_host_remove(host);
122 static struct platform_driver platform_ide_driver = {
124 .name = "pata_platform",
125 .owner = THIS_MODULE,
127 .probe = plat_ide_probe,
128 .remove = __devexit_p(plat_ide_remove),
131 static int __init platform_ide_init(void)
133 return platform_driver_register(&platform_ide_driver);
136 static void __exit platform_ide_exit(void)
138 platform_driver_unregister(&platform_ide_driver);
141 MODULE_DESCRIPTION("Platform IDE driver");
142 MODULE_LICENSE("GPL");
143 MODULE_ALIAS("platform:pata_platform");
145 module_init(platform_ide_init);
146 module_exit(platform_ide_exit);