1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
/*
* Synopsys DesignWare Multimedia Card Interface driver
*
* Copyright (C) 2009 NXP Semiconductors
* Copyright (C) 2009, 2010 Imagination Technologies Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/dw_mmc.h>
#include <linux/of.h>
#include "dw_mmc.h"
int dw_mci_pltfm_register(struct platform_device *pdev,
const struct dw_mci_drv_data *drv_data)
{
struct dw_mci *host;
struct resource *regs;
int ret;
host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
if (!host)
return -ENOMEM;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!regs)
return -ENXIO;
host->irq = platform_get_irq(pdev, 0);
if (host->irq < 0)
return host->irq;
host->drv_data = drv_data;
host->dev = &pdev->dev;
host->irq_flags = 0;
host->pdata = pdev->dev.platform_data;
host->regs = devm_ioremap_resource(&pdev->dev, regs);
if (IS_ERR(host->regs))
return PTR_ERR(host->regs);
if (drv_data && drv_data->init) {
ret = drv_data->init(host);
if (ret)
return ret;
}
platform_set_drvdata(pdev, host);
ret = dw_mci_probe(host);
return ret;
}
EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
static int dw_mci_pltfm_probe(struct platform_device *pdev)
{
return dw_mci_pltfm_register(pdev, NULL);
}
static int dw_mci_pltfm_remove(struct platform_device *pdev)
{
struct dw_mci *host = platform_get_drvdata(pdev);
platform_set_drvdata(pdev, NULL);
dw_mci_remove(host);
return 0;
}
EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
#ifdef CONFIG_PM_SLEEP
/*
* TODO: we should probably disable the clock to the card in the suspend path.
*/
static int dw_mci_pltfm_suspend(struct device *dev)
{
int ret;
struct dw_mci *host = dev_get_drvdata(dev);
ret = dw_mci_suspend(host);
if (ret)
return ret;
return 0;
}
static int dw_mci_pltfm_resume(struct device *dev)
{
int ret;
struct dw_mci *host = dev_get_drvdata(dev);
ret = dw_mci_resume(host);
if (ret)
return ret;
return 0;
}
#else
#define dw_mci_pltfm_suspend NULL
#define dw_mci_pltfm_resume NULL
#endif /* CONFIG_PM_SLEEP */
SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
static const struct of_device_id dw_mci_pltfm_match[] = {
{ .compatible = "snps,dw-mshc", },
{},
};
MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
static struct platform_driver dw_mci_pltfm_driver = {
.probe = dw_mci_pltfm_probe,
.remove = dw_mci_pltfm_remove,
.driver = {
.name = "dw_mmc",
.of_match_table = of_match_ptr(dw_mci_pltfm_match),
.pm = &dw_mci_pltfm_pmops,
},
};
module_platform_driver(dw_mci_pltfm_driver);
MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
MODULE_AUTHOR("NXP Semiconductor VietNam");
MODULE_AUTHOR("Imagination Technologies Ltd");
MODULE_LICENSE("GPL v2");
|
