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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 | ||
d2432a63 IM |
20 | enum { |
21 | TC6387XB_CELL_MMC, | |
22 | }; | |
23 | ||
cbdfb426 IM |
24 | #ifdef CONFIG_PM |
25 | static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state) | |
26 | { | |
27 | struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev); | |
28 | ||
29 | if (pdata && pdata->suspend) | |
30 | pdata->suspend(dev); | |
31 | ||
32 | return 0; | |
33 | } | |
34 | ||
35 | static int tc6387xb_resume(struct platform_device *dev) | |
36 | { | |
37 | struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev); | |
38 | ||
39 | if (pdata && pdata->resume) | |
40 | pdata->resume(dev); | |
41 | ||
42 | return 0; | |
43 | } | |
44 | #else | |
45 | #define tc6387xb_suspend NULL | |
46 | #define tc6387xb_resume NULL | |
47 | #endif | |
48 | ||
49 | /*--------------------------------------------------------------------------*/ | |
50 | ||
51 | static int tc6387xb_mmc_enable(struct platform_device *mmc) | |
52 | { | |
53 | struct platform_device *dev = to_platform_device(mmc->dev.parent); | |
54 | struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data; | |
55 | ||
56 | if (tc6387xb->enable_clk32k) | |
57 | tc6387xb->enable_clk32k(dev); | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
62 | static int tc6387xb_mmc_disable(struct platform_device *mmc) | |
63 | { | |
64 | struct platform_device *dev = to_platform_device(mmc->dev.parent); | |
65 | struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data; | |
66 | ||
67 | if (tc6387xb->disable_clk32k) | |
68 | tc6387xb->disable_clk32k(dev); | |
69 | ||
70 | return 0; | |
71 | } | |
72 | ||
73 | /*--------------------------------------------------------------------------*/ | |
74 | ||
75 | static struct resource tc6387xb_mmc_resources[] = { | |
76 | { | |
77 | .start = 0x800, | |
78 | .end = 0x9ff, | |
79 | .flags = IORESOURCE_MEM, | |
80 | }, | |
81 | { | |
82 | .start = 0x200, | |
83 | .end = 0x2ff, | |
84 | .flags = IORESOURCE_MEM, | |
85 | }, | |
86 | { | |
87 | .start = 0, | |
88 | .end = 0, | |
89 | .flags = IORESOURCE_IRQ, | |
90 | }, | |
91 | }; | |
92 | ||
93 | static struct mfd_cell tc6387xb_cells[] = { | |
d2432a63 | 94 | [TC6387XB_CELL_MMC] = { |
cbdfb426 IM |
95 | .name = "tmio-mmc", |
96 | .enable = tc6387xb_mmc_enable, | |
97 | .disable = tc6387xb_mmc_disable, | |
98 | .num_resources = ARRAY_SIZE(tc6387xb_mmc_resources), | |
99 | .resources = tc6387xb_mmc_resources, | |
100 | }, | |
101 | }; | |
102 | ||
103 | static int tc6387xb_probe(struct platform_device *dev) | |
104 | { | |
105 | struct tc6387xb_platform_data *data = platform_get_drvdata(dev); | |
106 | struct resource *iomem; | |
107 | int irq, ret; | |
108 | ||
109 | iomem = platform_get_resource(dev, IORESOURCE_MEM, 0); | |
110 | if (!iomem) { | |
111 | ret = -EINVAL; | |
112 | goto err_resource; | |
113 | } | |
114 | ||
115 | ret = platform_get_irq(dev, 0); | |
116 | if (ret >= 0) | |
117 | irq = ret; | |
118 | else | |
119 | goto err_resource; | |
120 | ||
121 | if (data && data->enable) | |
122 | data->enable(dev); | |
123 | ||
124 | printk(KERN_INFO "Toshiba tc6387xb initialised\n"); | |
125 | ||
d2432a63 IM |
126 | tc6387xb_cells[TC6387XB_CELL_MMC].platform_data = |
127 | &tc6387xb_cells[TC6387XB_CELL_MMC]; | |
128 | tc6387xb_cells[TC6387XB_CELL_MMC].data_size = | |
129 | sizeof(tc6387xb_cells[TC6387XB_CELL_MMC]); | |
130 | ||
56bf2bda SO |
131 | ret = mfd_add_devices(&dev->dev, dev->id, tc6387xb_cells, |
132 | ARRAY_SIZE(tc6387xb_cells), iomem, irq); | |
cbdfb426 IM |
133 | |
134 | if (!ret) | |
135 | return 0; | |
136 | ||
137 | err_resource: | |
138 | return ret; | |
139 | } | |
140 | ||
141 | static int tc6387xb_remove(struct platform_device *dev) | |
142 | { | |
143 | struct tc6387xb_platform_data *data = platform_get_drvdata(dev); | |
144 | ||
145 | if (data && data->disable) | |
146 | data->disable(dev); | |
147 | ||
148 | /* FIXME - free the resources! */ | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | ||
154 | static struct platform_driver tc6387xb_platform_driver = { | |
155 | .driver = { | |
156 | .name = "tc6387xb", | |
157 | }, | |
158 | .probe = tc6387xb_probe, | |
159 | .remove = tc6387xb_remove, | |
160 | .suspend = tc6387xb_suspend, | |
161 | .resume = tc6387xb_resume, | |
162 | }; | |
163 | ||
164 | ||
165 | static int __init tc6387xb_init(void) | |
166 | { | |
167 | return platform_driver_register(&tc6387xb_platform_driver); | |
168 | } | |
169 | ||
170 | static void __exit tc6387xb_exit(void) | |
171 | { | |
172 | platform_driver_unregister(&tc6387xb_platform_driver); | |
173 | } | |
174 | ||
175 | module_init(tc6387xb_init); | |
176 | module_exit(tc6387xb_exit); | |
177 | ||
178 | MODULE_DESCRIPTION("Toshiba TC6387XB core driver"); | |
179 | MODULE_LICENSE("GPL v2"); | |
180 | MODULE_AUTHOR("Ian Molton"); | |
181 | MODULE_ALIAS("platform:tc6387xb"); |