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Diffstat (limited to 'drivers/mfd/tc6387xb.c')
-rw-r--r--drivers/mfd/tc6387xb.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/mfd/tc6387xb.c b/drivers/mfd/tc6387xb.c
new file mode 100644
index 000000000000..03718feda4d8
--- /dev/null
+++ b/drivers/mfd/tc6387xb.c
@@ -0,0 +1,172 @@
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
21static 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
31static 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
47static 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
58static 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
71static 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
89static 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
99static 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
128err_resource:
129 return ret;
130}
131
132static 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
145static 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
156static int __init tc6387xb_init(void)
157{
158 return platform_driver_register(&tc6387xb_platform_driver);
159}
160
161static void __exit tc6387xb_exit(void)
162{
163 platform_driver_unregister(&tc6387xb_platform_driver);
164}
165
166module_init(tc6387xb_init);
167module_exit(tc6387xb_exit);
168
169MODULE_DESCRIPTION("Toshiba TC6387XB core driver");
170MODULE_LICENSE("GPL v2");
171MODULE_AUTHOR("Ian Molton");
172MODULE_ALIAS("platform:tc6387xb");