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62ca8034 SH |
1 | /* |
2 | * Synopsys DesignWare Multimedia Card Interface driver | |
3 | * | |
4 | * Copyright (C) 2009 NXP Semiconductors | |
5 | * Copyright (C) 2009, 2010 Imagination Technologies Ltd. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #include <linux/interrupt.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/io.h> | |
16 | #include <linux/irq.h> | |
17 | #include <linux/platform_device.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/mmc/host.h> | |
20 | #include <linux/mmc/mmc.h> | |
21 | #include <linux/mmc/dw_mmc.h> | |
22 | #include "dw_mmc.h" | |
23 | ||
36c179a9 | 24 | static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev) |
62ca8034 SH |
25 | { |
26 | struct dw_mci *host; | |
27 | struct resource *regs; | |
28 | int ret; | |
29 | ||
30 | host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL); | |
31 | if (!host) | |
32 | return -ENOMEM; | |
33 | ||
34 | regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
35 | if (!regs) { | |
36 | ret = -ENXIO; | |
37 | goto err_free; | |
38 | } | |
39 | ||
40 | host->irq = platform_get_irq(pdev, 0); | |
41 | if (host->irq < 0) { | |
42 | ret = host->irq; | |
43 | goto err_free; | |
44 | } | |
45 | ||
46 | host->dev = pdev->dev; | |
47 | host->irq_flags = 0; | |
48 | host->pdata = pdev->dev.platform_data; | |
49 | ret = -ENOMEM; | |
50 | host->regs = ioremap(regs->start, resource_size(regs)); | |
51 | if (!host->regs) | |
52 | goto err_free; | |
53 | platform_set_drvdata(pdev, host); | |
54 | ret = dw_mci_probe(host); | |
55 | if (ret) | |
56 | goto err_out; | |
57 | return ret; | |
58 | err_out: | |
59 | iounmap(host->regs); | |
60 | err_free: | |
61 | kfree(host); | |
62 | return ret; | |
63 | } | |
64 | ||
36c179a9 | 65 | static int __devexit dw_mci_pltfm_remove(struct platform_device *pdev) |
62ca8034 SH |
66 | { |
67 | struct dw_mci *host = platform_get_drvdata(pdev); | |
68 | ||
69 | platform_set_drvdata(pdev, NULL); | |
70 | dw_mci_remove(host); | |
71 | iounmap(host->regs); | |
72 | kfree(host); | |
73 | return 0; | |
74 | } | |
75 | ||
76 | #ifdef CONFIG_PM_SLEEP | |
77 | /* | |
78 | * TODO: we should probably disable the clock to the card in the suspend path. | |
79 | */ | |
80 | static int dw_mci_pltfm_suspend(struct device *dev) | |
81 | { | |
82 | int ret; | |
83 | struct dw_mci *host = dev_get_drvdata(dev); | |
84 | ||
85 | ret = dw_mci_suspend(host); | |
86 | if (ret) | |
87 | return ret; | |
88 | ||
89 | return 0; | |
90 | } | |
91 | ||
92 | static int dw_mci_pltfm_resume(struct device *dev) | |
93 | { | |
94 | int ret; | |
95 | struct dw_mci *host = dev_get_drvdata(dev); | |
96 | ||
97 | ret = dw_mci_resume(host); | |
98 | if (ret) | |
99 | return ret; | |
100 | ||
101 | return 0; | |
102 | } | |
103 | #else | |
104 | #define dw_mci_pltfm_suspend NULL | |
105 | #define dw_mci_pltfm_resume NULL | |
106 | #endif /* CONFIG_PM_SLEEP */ | |
107 | ||
108 | static SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume); | |
109 | ||
110 | static struct platform_driver dw_mci_pltfm_driver = { | |
111 | .remove = __exit_p(dw_mci_pltfm_remove), | |
112 | .driver = { | |
113 | .name = "dw_mmc", | |
114 | .pm = &dw_mci_pltfm_pmops, | |
115 | }, | |
116 | }; | |
117 | ||
118 | static int __init dw_mci_init(void) | |
119 | { | |
120 | return platform_driver_probe(&dw_mci_pltfm_driver, dw_mci_pltfm_probe); | |
121 | } | |
122 | ||
123 | static void __exit dw_mci_exit(void) | |
124 | { | |
125 | platform_driver_unregister(&dw_mci_pltfm_driver); | |
126 | } | |
127 | ||
128 | module_init(dw_mci_init); | |
129 | module_exit(dw_mci_exit); | |
130 | ||
131 | MODULE_DESCRIPTION("DW Multimedia Card Interface driver"); | |
132 | MODULE_AUTHOR("NXP Semiconductor VietNam"); | |
133 | MODULE_AUTHOR("Imagination Technologies Ltd"); | |
134 | MODULE_LICENSE("GPL v2"); |