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8cb1f567 AV |
1 | /* |
2 | * Platform IDE driver | |
3 | * | |
4 | * Copyright (C) 2007 MontaVista Software | |
5 | * | |
6 | * Maintainer: Kumar Gala <galak@kernel.crashing.org> | |
7 | * | |
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. | |
12 | */ | |
13 | ||
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> | |
0a87e3e9 | 20 | #include <linux/ata_platform.h> |
8cb1f567 AV |
21 | #include <linux/platform_device.h> |
22 | #include <linux/io.h> | |
23 | ||
57c802e8 BZ |
24 | static void __devinit plat_ide_setup_ports(hw_regs_t *hw, |
25 | void __iomem *base, | |
26 | void __iomem *ctrl, | |
27 | struct pata_platform_info *pdata, | |
28 | int irq) | |
8cb1f567 AV |
29 | { |
30 | unsigned long port = (unsigned long)base; | |
baa8f3e9 | 31 | int i; |
8cb1f567 | 32 | |
4c3032d8 | 33 | hw->io_ports.data_addr = port; |
8cb1f567 AV |
34 | |
35 | port += (1 << pdata->ioport_shift); | |
4c3032d8 | 36 | for (i = 1; i <= 7; |
8cb1f567 | 37 | i++, port += (1 << pdata->ioport_shift)) |
4c3032d8 | 38 | hw->io_ports_array[i] = port; |
8cb1f567 | 39 | |
4c3032d8 | 40 | hw->io_ports.ctl_addr = (unsigned long)ctrl; |
8cb1f567 | 41 | |
57c802e8 | 42 | hw->irq = irq; |
8cb1f567 | 43 | |
57c802e8 | 44 | hw->chipset = ide_generic; |
8cb1f567 AV |
45 | } |
46 | ||
7b60fa16 BZ |
47 | static const struct ide_port_info platform_ide_port_info = { |
48 | .host_flags = IDE_HFLAG_NO_DMA, | |
49 | }; | |
50 | ||
8cb1f567 AV |
51 | static int __devinit plat_ide_probe(struct platform_device *pdev) |
52 | { | |
53 | struct resource *res_base, *res_alt, *res_irq; | |
04244937 | 54 | void __iomem *base, *alt_base; |
8cb1f567 | 55 | struct pata_platform_info *pdata; |
48c3c107 | 56 | struct ide_host *host; |
c97c6aca BZ |
57 | int ret = 0, mmio = 0; |
58 | hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; | |
7b60fa16 | 59 | struct ide_port_info d = platform_ide_port_info; |
8cb1f567 AV |
60 | |
61 | pdata = pdev->dev.platform_data; | |
62 | ||
63 | /* get a pointer to the register memory */ | |
64 | res_base = platform_get_resource(pdev, IORESOURCE_IO, 0); | |
65 | res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1); | |
66 | ||
67 | if (!res_base || !res_alt) { | |
68 | res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
69 | res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1); | |
70 | if (!res_base || !res_alt) { | |
71 | ret = -ENOMEM; | |
72 | goto out; | |
73 | } | |
74 | mmio = 1; | |
75 | } | |
76 | ||
77 | res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
78 | if (!res_irq) { | |
79 | ret = -EINVAL; | |
80 | goto out; | |
81 | } | |
82 | ||
83 | if (mmio) { | |
04244937 | 84 | base = devm_ioremap(&pdev->dev, |
8cb1f567 | 85 | res_base->start, res_base->end - res_base->start + 1); |
04244937 | 86 | alt_base = devm_ioremap(&pdev->dev, |
8cb1f567 AV |
87 | res_alt->start, res_alt->end - res_alt->start + 1); |
88 | } else { | |
04244937 | 89 | base = devm_ioport_map(&pdev->dev, |
8cb1f567 | 90 | res_base->start, res_base->end - res_base->start + 1); |
04244937 | 91 | alt_base = devm_ioport_map(&pdev->dev, |
8cb1f567 AV |
92 | res_alt->start, res_alt->end - res_alt->start + 1); |
93 | } | |
94 | ||
57c802e8 | 95 | memset(&hw, 0, sizeof(hw)); |
04244937 | 96 | plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start); |
57c802e8 BZ |
97 | hw.dev = &pdev->dev; |
98 | ||
761052e6 | 99 | if (mmio) |
7b60fa16 | 100 | d.host_flags |= IDE_HFLAG_MMIO; |
57c802e8 | 101 | |
6f904d01 BZ |
102 | ret = ide_host_add(&d, hws, &host); |
103 | if (ret) | |
48c3c107 | 104 | goto out; |
8cb1f567 | 105 | |
48c3c107 | 106 | platform_set_drvdata(pdev, host); |
8cb1f567 AV |
107 | |
108 | return 0; | |
109 | ||
110 | out: | |
111 | return ret; | |
112 | } | |
113 | ||
114 | static int __devexit plat_ide_remove(struct platform_device *pdev) | |
115 | { | |
48c3c107 | 116 | struct ide_host *host = pdev->dev.driver_data; |
8cb1f567 | 117 | |
48c3c107 | 118 | ide_host_remove(host); |
8cb1f567 AV |
119 | |
120 | return 0; | |
121 | } | |
122 | ||
123 | static struct platform_driver platform_ide_driver = { | |
124 | .driver = { | |
125 | .name = "pata_platform", | |
458622fc | 126 | .owner = THIS_MODULE, |
8cb1f567 AV |
127 | }, |
128 | .probe = plat_ide_probe, | |
129 | .remove = __devexit_p(plat_ide_remove), | |
130 | }; | |
131 | ||
132 | static int __init platform_ide_init(void) | |
133 | { | |
134 | return platform_driver_register(&platform_ide_driver); | |
135 | } | |
136 | ||
137 | static void __exit platform_ide_exit(void) | |
138 | { | |
139 | platform_driver_unregister(&platform_ide_driver); | |
140 | } | |
141 | ||
142 | MODULE_DESCRIPTION("Platform IDE driver"); | |
143 | MODULE_LICENSE("GPL"); | |
458622fc | 144 | MODULE_ALIAS("platform:pata_platform"); |
8cb1f567 AV |
145 | |
146 | module_init(platform_ide_init); | |
147 | module_exit(platform_ide_exit); |