tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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#include <linux/clk.h>
21
22#include "dw_mmc.h"
23#include "dw_mmc-pltfm.h"
24
25int dw_mci_pltfm_register(struct platform_device *pdev,
26 const struct dw_mci_drv_data *drv_data)
27{
28 struct dw_mci *host;
29 struct resource *regs;
30
31 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
32 if (!host)
33 return -ENOMEM;
34
35 host->irq = platform_get_irq(pdev, 0);
36 if (host->irq < 0)
37 return host->irq;
38
39 host->drv_data = drv_data;
40 host->dev = &pdev->dev;
41 host->irq_flags = 0;
42 host->pdata = pdev->dev.platform_data;
43
44 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
45 host->regs = devm_ioremap_resource(&pdev->dev, regs);
46 if (IS_ERR(host->regs))
47 return PTR_ERR(host->regs);
48
49 /* Get registers' physical base address */
50 host->phy_regs = regs->start;
51
52 platform_set_drvdata(pdev, host);
53 return dw_mci_probe(host);
54}
55EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
56
57const struct dev_pm_ops dw_mci_pltfm_pmops = {
58 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
59 pm_runtime_force_resume)
60 SET_RUNTIME_PM_OPS(dw_mci_runtime_suspend,
61 dw_mci_runtime_resume,
62 NULL)
63};
64EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
65
66static const struct of_device_id dw_mci_pltfm_match[] = {
67 { .compatible = "snps,dw-mshc", },
68 { .compatible = "altr,socfpga-dw-mshc", },
69 { .compatible = "img,pistachio-dw-mshc", },
70 {},
71};
72MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
73
74static int dw_mci_pltfm_probe(struct platform_device *pdev)
75{
76 const struct dw_mci_drv_data *drv_data = NULL;
77 const struct of_device_id *match;
78
79 if (pdev->dev.of_node) {
80 match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
81 drv_data = match->data;
82 }
83
84 return dw_mci_pltfm_register(pdev, drv_data);
85}
86
87int dw_mci_pltfm_remove(struct platform_device *pdev)
88{
89 struct dw_mci *host = platform_get_drvdata(pdev);
90
91 dw_mci_remove(host);
92 return 0;
93}
94EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
95
96static struct platform_driver dw_mci_pltfm_driver = {
97 .probe = dw_mci_pltfm_probe,
98 .remove = dw_mci_pltfm_remove,
99 .driver = {
100 .name = "dw_mmc",
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");