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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> | |
c91eab4b TA |
22 | #include <linux/of.h> |
23 | ||
62ca8034 SH |
24 | #include "dw_mmc.h" |
25 | ||
800d78bf TA |
26 | int dw_mci_pltfm_register(struct platform_device *pdev, |
27 | struct dw_mci_drv_data *drv_data) | |
62ca8034 SH |
28 | { |
29 | struct dw_mci *host; | |
30 | struct resource *regs; | |
31 | int ret; | |
32 | ||
bb8bdc77 | 33 | host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL); |
62ca8034 SH |
34 | if (!host) |
35 | return -ENOMEM; | |
36 | ||
37 | regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
bb8bdc77 TA |
38 | if (!regs) |
39 | return -ENXIO; | |
62ca8034 SH |
40 | |
41 | host->irq = platform_get_irq(pdev, 0); | |
bb8bdc77 TA |
42 | if (host->irq < 0) |
43 | return host->irq; | |
62ca8034 | 44 | |
800d78bf | 45 | host->drv_data = drv_data; |
4a90920c | 46 | host->dev = &pdev->dev; |
62ca8034 SH |
47 | host->irq_flags = 0; |
48 | host->pdata = pdev->dev.platform_data; | |
bb8bdc77 | 49 | host->regs = devm_request_and_ioremap(&pdev->dev, regs); |
62ca8034 | 50 | if (!host->regs) |
bb8bdc77 TA |
51 | return -ENOMEM; |
52 | ||
800d78bf TA |
53 | if (host->drv_data->init) { |
54 | ret = host->drv_data->init(host); | |
55 | if (ret) | |
56 | return ret; | |
57 | } | |
58 | ||
62ca8034 SH |
59 | platform_set_drvdata(pdev, host); |
60 | ret = dw_mci_probe(host); | |
62ca8034 SH |
61 | return ret; |
62 | } | |
17403f23 TA |
63 | EXPORT_SYMBOL_GPL(dw_mci_pltfm_register); |
64 | ||
65 | static int __devinit dw_mci_pltfm_probe(struct platform_device *pdev) | |
66 | { | |
800d78bf | 67 | return dw_mci_pltfm_register(pdev, NULL); |
17403f23 | 68 | } |
62ca8034 | 69 | |
36c179a9 | 70 | static int __devexit dw_mci_pltfm_remove(struct platform_device *pdev) |
62ca8034 SH |
71 | { |
72 | struct dw_mci *host = platform_get_drvdata(pdev); | |
73 | ||
74 | platform_set_drvdata(pdev, NULL); | |
75 | dw_mci_remove(host); | |
62ca8034 SH |
76 | return 0; |
77 | } | |
17403f23 | 78 | EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove); |
62ca8034 SH |
79 | |
80 | #ifdef CONFIG_PM_SLEEP | |
81 | /* | |
82 | * TODO: we should probably disable the clock to the card in the suspend path. | |
83 | */ | |
84 | static int dw_mci_pltfm_suspend(struct device *dev) | |
85 | { | |
86 | int ret; | |
87 | struct dw_mci *host = dev_get_drvdata(dev); | |
88 | ||
89 | ret = dw_mci_suspend(host); | |
90 | if (ret) | |
91 | return ret; | |
92 | ||
93 | return 0; | |
94 | } | |
95 | ||
96 | static int dw_mci_pltfm_resume(struct device *dev) | |
97 | { | |
98 | int ret; | |
99 | struct dw_mci *host = dev_get_drvdata(dev); | |
100 | ||
101 | ret = dw_mci_resume(host); | |
102 | if (ret) | |
103 | return ret; | |
104 | ||
105 | return 0; | |
106 | } | |
107 | #else | |
108 | #define dw_mci_pltfm_suspend NULL | |
109 | #define dw_mci_pltfm_resume NULL | |
110 | #endif /* CONFIG_PM_SLEEP */ | |
111 | ||
17403f23 TA |
112 | SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume); |
113 | EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops); | |
62ca8034 | 114 | |
c91eab4b TA |
115 | static const struct of_device_id dw_mci_pltfm_match[] = { |
116 | { .compatible = "snps,dw-mshc", }, | |
117 | {}, | |
118 | }; | |
119 | MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match); | |
120 | ||
62ca8034 SH |
121 | static struct platform_driver dw_mci_pltfm_driver = { |
122 | .remove = __exit_p(dw_mci_pltfm_remove), | |
123 | .driver = { | |
124 | .name = "dw_mmc", | |
c91eab4b | 125 | .of_match_table = of_match_ptr(dw_mci_pltfm_match), |
62ca8034 SH |
126 | .pm = &dw_mci_pltfm_pmops, |
127 | }, | |
128 | }; | |
129 | ||
130 | static int __init dw_mci_init(void) | |
131 | { | |
132 | return platform_driver_probe(&dw_mci_pltfm_driver, dw_mci_pltfm_probe); | |
133 | } | |
134 | ||
135 | static void __exit dw_mci_exit(void) | |
136 | { | |
137 | platform_driver_unregister(&dw_mci_pltfm_driver); | |
138 | } | |
139 | ||
140 | module_init(dw_mci_init); | |
141 | module_exit(dw_mci_exit); | |
142 | ||
143 | MODULE_DESCRIPTION("DW Multimedia Card Interface driver"); | |
144 | MODULE_AUTHOR("NXP Semiconductor VietNam"); | |
145 | MODULE_AUTHOR("Imagination Technologies Ltd"); | |
146 | MODULE_LICENSE("GPL v2"); |