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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 | ||
9f36d314 | 24 | static void __devinit plat_ide_setup_ports(struct ide_hw *hw, |
57c802e8 BZ |
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 AV |
43 | } |
44 | ||
7b60fa16 BZ |
45 | static const struct ide_port_info platform_ide_port_info = { |
46 | .host_flags = IDE_HFLAG_NO_DMA, | |
29e52cf7 | 47 | .chipset = ide_generic, |
7b60fa16 BZ |
48 | }; |
49 | ||
8cb1f567 AV |
50 | static int __devinit plat_ide_probe(struct platform_device *pdev) |
51 | { | |
52 | struct resource *res_base, *res_alt, *res_irq; | |
04244937 | 53 | void __iomem *base, *alt_base; |
8cb1f567 | 54 | struct pata_platform_info *pdata; |
48c3c107 | 55 | struct ide_host *host; |
c97c6aca | 56 | int ret = 0, mmio = 0; |
9f36d314 | 57 | struct ide_hw hw, *hws[] = { &hw }; |
7b60fa16 | 58 | struct ide_port_info d = platform_ide_port_info; |
8cb1f567 AV |
59 | |
60 | pdata = pdev->dev.platform_data; | |
61 | ||
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); | |
65 | ||
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) { | |
70 | ret = -ENOMEM; | |
71 | goto out; | |
72 | } | |
73 | mmio = 1; | |
74 | } | |
75 | ||
76 | res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); | |
77 | if (!res_irq) { | |
78 | ret = -EINVAL; | |
79 | goto out; | |
80 | } | |
81 | ||
82 | if (mmio) { | |
04244937 | 83 | base = devm_ioremap(&pdev->dev, |
8cb1f567 | 84 | res_base->start, res_base->end - res_base->start + 1); |
04244937 | 85 | alt_base = devm_ioremap(&pdev->dev, |
8cb1f567 AV |
86 | res_alt->start, res_alt->end - res_alt->start + 1); |
87 | } else { | |
04244937 | 88 | base = devm_ioport_map(&pdev->dev, |
8cb1f567 | 89 | res_base->start, res_base->end - res_base->start + 1); |
04244937 | 90 | alt_base = devm_ioport_map(&pdev->dev, |
8cb1f567 AV |
91 | res_alt->start, res_alt->end - res_alt->start + 1); |
92 | } | |
93 | ||
57c802e8 | 94 | memset(&hw, 0, sizeof(hw)); |
04244937 | 95 | plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start); |
57c802e8 BZ |
96 | hw.dev = &pdev->dev; |
97 | ||
761052e6 | 98 | if (mmio) |
7b60fa16 | 99 | d.host_flags |= IDE_HFLAG_MMIO; |
57c802e8 | 100 | |
dca39830 | 101 | ret = ide_host_add(&d, hws, 1, &host); |
6f904d01 | 102 | if (ret) |
48c3c107 | 103 | goto out; |
8cb1f567 | 104 | |
48c3c107 | 105 | platform_set_drvdata(pdev, host); |
8cb1f567 AV |
106 | |
107 | return 0; | |
108 | ||
109 | out: | |
110 | return ret; | |
111 | } | |
112 | ||
113 | static int __devexit plat_ide_remove(struct platform_device *pdev) | |
114 | { | |
fcb52077 | 115 | struct ide_host *host = dev_get_drvdata(&pdev->dev); |
8cb1f567 | 116 | |
48c3c107 | 117 | ide_host_remove(host); |
8cb1f567 AV |
118 | |
119 | return 0; | |
120 | } | |
121 | ||
122 | static struct platform_driver platform_ide_driver = { | |
123 | .driver = { | |
124 | .name = "pata_platform", | |
458622fc | 125 | .owner = THIS_MODULE, |
8cb1f567 AV |
126 | }, |
127 | .probe = plat_ide_probe, | |
128 | .remove = __devexit_p(plat_ide_remove), | |
129 | }; | |
130 | ||
131 | static int __init platform_ide_init(void) | |
132 | { | |
133 | return platform_driver_register(&platform_ide_driver); | |
134 | } | |
135 | ||
136 | static void __exit platform_ide_exit(void) | |
137 | { | |
138 | platform_driver_unregister(&platform_ide_driver); | |
139 | } | |
140 | ||
141 | MODULE_DESCRIPTION("Platform IDE driver"); | |
142 | MODULE_LICENSE("GPL"); | |
458622fc | 143 | MODULE_ALIAS("platform:pata_platform"); |
8cb1f567 AV |
144 | |
145 | module_init(platform_ide_init); | |
146 | module_exit(platform_ide_exit); |