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cbdfb426 IM |
1 | /* |
2 | * Toshiba TC6387XB support | |
3 | * Copyright (c) 2005 Ian Molton | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * This file contains TC6387XB base support. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/platform_device.h> | |
15 | #include <linux/err.h> | |
16 | #include <linux/mfd/core.h> | |
17 | #include <linux/mfd/tmio.h> | |
18 | #include <linux/mfd/tc6387xb.h> | |
19 | ||
20 | #ifdef CONFIG_PM | |
21 | static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state) | |
22 | { | |
23 | struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev); | |
24 | ||
25 | if (pdata && pdata->suspend) | |
26 | pdata->suspend(dev); | |
27 | ||
28 | return 0; | |
29 | } | |
30 | ||
31 | static int tc6387xb_resume(struct platform_device *dev) | |
32 | { | |
33 | struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev); | |
34 | ||
35 | if (pdata && pdata->resume) | |
36 | pdata->resume(dev); | |
37 | ||
38 | return 0; | |
39 | } | |
40 | #else | |
41 | #define tc6387xb_suspend NULL | |
42 | #define tc6387xb_resume NULL | |
43 | #endif | |
44 | ||
45 | /*--------------------------------------------------------------------------*/ | |
46 | ||
47 | static int tc6387xb_mmc_enable(struct platform_device *mmc) | |
48 | { | |
49 | struct platform_device *dev = to_platform_device(mmc->dev.parent); | |
50 | struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data; | |
51 | ||
52 | if (tc6387xb->enable_clk32k) | |
53 | tc6387xb->enable_clk32k(dev); | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static int tc6387xb_mmc_disable(struct platform_device *mmc) | |
59 | { | |
60 | struct platform_device *dev = to_platform_device(mmc->dev.parent); | |
61 | struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data; | |
62 | ||
63 | if (tc6387xb->disable_clk32k) | |
64 | tc6387xb->disable_clk32k(dev); | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
69 | /*--------------------------------------------------------------------------*/ | |
70 | ||
71 | static struct resource tc6387xb_mmc_resources[] = { | |
72 | { | |
73 | .start = 0x800, | |
74 | .end = 0x9ff, | |
75 | .flags = IORESOURCE_MEM, | |
76 | }, | |
77 | { | |
78 | .start = 0x200, | |
79 | .end = 0x2ff, | |
80 | .flags = IORESOURCE_MEM, | |
81 | }, | |
82 | { | |
83 | .start = 0, | |
84 | .end = 0, | |
85 | .flags = IORESOURCE_IRQ, | |
86 | }, | |
87 | }; | |
88 | ||
89 | static struct mfd_cell tc6387xb_cells[] = { | |
90 | { | |
91 | .name = "tmio-mmc", | |
92 | .enable = tc6387xb_mmc_enable, | |
93 | .disable = tc6387xb_mmc_disable, | |
94 | .num_resources = ARRAY_SIZE(tc6387xb_mmc_resources), | |
95 | .resources = tc6387xb_mmc_resources, | |
96 | }, | |
97 | }; | |
98 | ||
99 | static int tc6387xb_probe(struct platform_device *dev) | |
100 | { | |
101 | struct tc6387xb_platform_data *data = platform_get_drvdata(dev); | |
102 | struct resource *iomem; | |
103 | int irq, ret; | |
104 | ||
105 | iomem = platform_get_resource(dev, IORESOURCE_MEM, 0); | |
106 | if (!iomem) { | |
107 | ret = -EINVAL; | |
108 | goto err_resource; | |
109 | } | |
110 | ||
111 | ret = platform_get_irq(dev, 0); | |
112 | if (ret >= 0) | |
113 | irq = ret; | |
114 | else | |
115 | goto err_resource; | |
116 | ||
117 | if (data && data->enable) | |
118 | data->enable(dev); | |
119 | ||
120 | printk(KERN_INFO "Toshiba tc6387xb initialised\n"); | |
121 | ||
122 | ret = mfd_add_devices(dev, tc6387xb_cells, | |
123 | ARRAY_SIZE(tc6387xb_cells), iomem, irq); | |
124 | ||
125 | if (!ret) | |
126 | return 0; | |
127 | ||
128 | err_resource: | |
129 | return ret; | |
130 | } | |
131 | ||
132 | static int tc6387xb_remove(struct platform_device *dev) | |
133 | { | |
134 | struct tc6387xb_platform_data *data = platform_get_drvdata(dev); | |
135 | ||
136 | if (data && data->disable) | |
137 | data->disable(dev); | |
138 | ||
139 | /* FIXME - free the resources! */ | |
140 | ||
141 | return 0; | |
142 | } | |
143 | ||
144 | ||
145 | static struct platform_driver tc6387xb_platform_driver = { | |
146 | .driver = { | |
147 | .name = "tc6387xb", | |
148 | }, | |
149 | .probe = tc6387xb_probe, | |
150 | .remove = tc6387xb_remove, | |
151 | .suspend = tc6387xb_suspend, | |
152 | .resume = tc6387xb_resume, | |
153 | }; | |
154 | ||
155 | ||
156 | static int __init tc6387xb_init(void) | |
157 | { | |
158 | return platform_driver_register(&tc6387xb_platform_driver); | |
159 | } | |
160 | ||
161 | static void __exit tc6387xb_exit(void) | |
162 | { | |
163 | platform_driver_unregister(&tc6387xb_platform_driver); | |
164 | } | |
165 | ||
166 | module_init(tc6387xb_init); | |
167 | module_exit(tc6387xb_exit); | |
168 | ||
169 | MODULE_DESCRIPTION("Toshiba TC6387XB core driver"); | |
170 | MODULE_LICENSE("GPL v2"); | |
171 | MODULE_AUTHOR("Ian Molton"); | |
172 | MODULE_ALIAS("platform:tc6387xb"); |