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
dw_mci_pltfm_register(struct platform_device * pdev,const struct dw_mci_drv_data * drv_data)24 int 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 }
54 EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
55
56 const 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 };
63 EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
64
65 static 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 };
71 MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
72
dw_mci_pltfm_probe(struct platform_device * pdev)73 static 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
dw_mci_pltfm_remove(struct platform_device * pdev)86 int 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 }
93 EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
94
95 static 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
106 module_platform_driver(dw_mci_pltfm_driver);
107
108 MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
109 MODULE_AUTHOR("NXP Semiconductor VietNam");
110 MODULE_AUTHOR("Imagination Technologies Ltd");
111 MODULE_LICENSE("GPL v2");
112