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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>
22#include "dw_mmc.h"
23
24static int dw_mci_pltfm_probe(struct platform_device *pdev)
25{
26 struct dw_mci *host;
27 struct resource *regs;
28 int ret;
29
30 host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL);
31 if (!host)
32 return -ENOMEM;
33
34 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
35 if (!regs) {
36 ret = -ENXIO;
37 goto err_free;
38 }
39
40 host->irq = platform_get_irq(pdev, 0);
41 if (host->irq < 0) {
42 ret = host->irq;
43 goto err_free;
44 }
45
46 host->dev = pdev->dev;
47 host->irq_flags = 0;
48 host->pdata = pdev->dev.platform_data;
49 ret = -ENOMEM;
50 host->regs = ioremap(regs->start, resource_size(regs));
51 if (!host->regs)
52 goto err_free;
53 platform_set_drvdata(pdev, host);
54 ret = dw_mci_probe(host);
55 if (ret)
56 goto err_out;
57 return ret;
58err_out:
59 iounmap(host->regs);
60err_free:
61 kfree(host);
62 return ret;
63}
64
65static int __exit dw_mci_pltfm_remove(struct platform_device *pdev)
66{
67 struct dw_mci *host = platform_get_drvdata(pdev);
68
69 platform_set_drvdata(pdev, NULL);
70 dw_mci_remove(host);
71 iounmap(host->regs);
72 kfree(host);
73 return 0;
74}
75
76#ifdef CONFIG_PM_SLEEP
77/*
78 * TODO: we should probably disable the clock to the card in the suspend path.
79 */
80static int dw_mci_pltfm_suspend(struct device *dev)
81{
82 int ret;
83 struct dw_mci *host = dev_get_drvdata(dev);
84
85 ret = dw_mci_suspend(host);
86 if (ret)
87 return ret;
88
89 return 0;
90}
91
92static int dw_mci_pltfm_resume(struct device *dev)
93{
94 int ret;
95 struct dw_mci *host = dev_get_drvdata(dev);
96
97 ret = dw_mci_resume(host);
98 if (ret)
99 return ret;
100
101 return 0;
102}
103#else
104#define dw_mci_pltfm_suspend NULL
105#define dw_mci_pltfm_resume NULL
106#endif /* CONFIG_PM_SLEEP */
107
108static SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
109
110static struct platform_driver dw_mci_pltfm_driver = {
111 .remove = __exit_p(dw_mci_pltfm_remove),
112 .driver = {
113 .name = "dw_mmc",
114 .pm = &dw_mci_pltfm_pmops,
115 },
116};
117
118static int __init dw_mci_init(void)
119{
120 return platform_driver_probe(&dw_mci_pltfm_driver, dw_mci_pltfm_probe);
121}
122
123static void __exit dw_mci_exit(void)
124{
125 platform_driver_unregister(&dw_mci_pltfm_driver);
126}
127
128module_init(dw_mci_init);
129module_exit(dw_mci_exit);
130
131MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
132MODULE_AUTHOR("NXP Semiconductor VietNam");
133MODULE_AUTHOR("Imagination Technologies Ltd");
134MODULE_LICENSE("GPL v2");
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/err.h>
14#include <linux/interrupt.h>
15#include <linux/module.h>
16#include <linux/io.h>
17#include <linux/irq.h>
18#include <linux/platform_device.h>
19#include <linux/slab.h>
20#include <linux/mmc/host.h>
21#include <linux/mmc/mmc.h>
22#include <linux/mmc/dw_mmc.h>
23#include <linux/of.h>
24#include <linux/clk.h>
25
26#include "dw_mmc.h"
27#include "dw_mmc-pltfm.h"
28
29int dw_mci_pltfm_register(struct platform_device *pdev,
30 const struct dw_mci_drv_data *drv_data)
31{
32 struct dw_mci *host;
33 struct resource *regs;
34
35 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
36 if (!host)
37 return -ENOMEM;
38
39 host->irq = platform_get_irq(pdev, 0);
40 if (host->irq < 0)
41 return host->irq;
42
43 host->drv_data = drv_data;
44 host->dev = &pdev->dev;
45 host->irq_flags = 0;
46 host->pdata = pdev->dev.platform_data;
47
48 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
49 /* Get registers' physical base address */
50 host->phy_regs = regs->start;
51 host->regs = devm_ioremap_resource(&pdev->dev, regs);
52 if (IS_ERR(host->regs))
53 return PTR_ERR(host->regs);
54
55 platform_set_drvdata(pdev, host);
56 return dw_mci_probe(host);
57}
58EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
59
60#ifdef CONFIG_PM_SLEEP
61/*
62 * TODO: we should probably disable the clock to the card in the suspend path.
63 */
64static int dw_mci_pltfm_suspend(struct device *dev)
65{
66 struct dw_mci *host = dev_get_drvdata(dev);
67
68 return dw_mci_suspend(host);
69}
70
71static int dw_mci_pltfm_resume(struct device *dev)
72{
73 struct dw_mci *host = dev_get_drvdata(dev);
74
75 return dw_mci_resume(host);
76}
77#endif /* CONFIG_PM_SLEEP */
78
79SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
80EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
81
82static const struct of_device_id dw_mci_pltfm_match[] = {
83 { .compatible = "snps,dw-mshc", },
84 { .compatible = "altr,socfpga-dw-mshc", },
85 { .compatible = "img,pistachio-dw-mshc", },
86 {},
87};
88MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
89
90static int dw_mci_pltfm_probe(struct platform_device *pdev)
91{
92 const struct dw_mci_drv_data *drv_data = NULL;
93 const struct of_device_id *match;
94
95 if (pdev->dev.of_node) {
96 match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
97 drv_data = match->data;
98 }
99
100 return dw_mci_pltfm_register(pdev, drv_data);
101}
102
103int dw_mci_pltfm_remove(struct platform_device *pdev)
104{
105 struct dw_mci *host = platform_get_drvdata(pdev);
106
107 dw_mci_remove(host);
108 return 0;
109}
110EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
111
112static struct platform_driver dw_mci_pltfm_driver = {
113 .probe = dw_mci_pltfm_probe,
114 .remove = dw_mci_pltfm_remove,
115 .driver = {
116 .name = "dw_mmc",
117 .of_match_table = dw_mci_pltfm_match,
118 .pm = &dw_mci_pltfm_pmops,
119 },
120};
121
122module_platform_driver(dw_mci_pltfm_driver);
123
124MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
125MODULE_AUTHOR("NXP Semiconductor VietNam");
126MODULE_AUTHOR("Imagination Technologies Ltd");
127MODULE_LICENSE("GPL v2");