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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// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Synopsys DesignWare Multimedia Card Interface driver
4 *
5 * Copyright (C) 2009 NXP Semiconductors
6 * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
7 */
8
9#include <linux/err.h>
10#include <linux/interrupt.h>
11#include <linux/module.h>
12#include <linux/io.h>
13#include <linux/irq.h>
14#include <linux/platform_device.h>
15#include <linux/pm_runtime.h>
16#include <linux/slab.h>
17#include <linux/mmc/host.h>
18#include <linux/mmc/mmc.h>
19#include <linux/of.h>
20
21#include "dw_mmc.h"
22#include "dw_mmc-pltfm.h"
23
24int dw_mci_pltfm_register(struct platform_device *pdev,
25 const struct dw_mci_drv_data *drv_data)
26{
27 struct dw_mci *host;
28 struct resource *regs;
29
30 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
31 if (!host)
32 return -ENOMEM;
33
34 host->irq = platform_get_irq(pdev, 0);
35 if (host->irq < 0)
36 return host->irq;
37
38 host->drv_data = drv_data;
39 host->dev = &pdev->dev;
40 host->irq_flags = 0;
41 host->pdata = pdev->dev.platform_data;
42
43 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
44 host->regs = devm_ioremap_resource(&pdev->dev, regs);
45 if (IS_ERR(host->regs))
46 return PTR_ERR(host->regs);
47
48 /* Get registers' physical base address */
49 host->phy_regs = regs->start;
50
51 platform_set_drvdata(pdev, host);
52 return dw_mci_probe(host);
53}
54EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
55
56const struct dev_pm_ops dw_mci_pltfm_pmops = {
57 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
58 pm_runtime_force_resume)
59 SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
60 dw_mci_runtime_resume,
61 NULL)
62};
63EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
64
65static const struct of_device_id dw_mci_pltfm_match[] = {
66 { .compatible = "snps,dw-mshc", },
67 { .compatible = "altr,socfpga-dw-mshc", },
68 { .compatible = "img,pistachio-dw-mshc", },
69 {},
70};
71MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
72
73static int dw_mci_pltfm_probe(struct platform_device *pdev)
74{
75 const struct dw_mci_drv_data *drv_data = NULL;
76 const struct of_device_id *match;
77
78 if (pdev->dev.of_node) {
79 match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
80 drv_data = match->data;
81 }
82
83 return dw_mci_pltfm_register(pdev, drv_data);
84}
85
86int dw_mci_pltfm_remove(struct platform_device *pdev)
87{
88 struct dw_mci *host = platform_get_drvdata(pdev);
89
90 dw_mci_remove(host);
91 return 0;
92}
93EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
94
95static struct platform_driver dw_mci_pltfm_driver = {
96 .probe = dw_mci_pltfm_probe,
97 .remove = dw_mci_pltfm_remove,
98 .driver = {
99 .name = "dw_mmc",
100 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
101 .of_match_table = dw_mci_pltfm_match,
102 .pm = &dw_mci_pltfm_pmops,
103 },
104};
105
106module_platform_driver(dw_mci_pltfm_driver);
107
108MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
109MODULE_AUTHOR("NXP Semiconductor VietNam");
110MODULE_AUTHOR("Imagination Technologies Ltd");
111MODULE_LICENSE("GPL v2");