2 * Synopsys DesignWare Multimedia Card Interface driver
4 * Copyright (C) 2009 NXP Semiconductors
5 * Copyright (C) 2009, 2010 Imagination Technologies Ltd.
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.
13 #include <linux/err.h>
14 #include <linux/interrupt.h>
15 #include <linux/module.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>
26 #include "dw_mmc-pltfm.h"
28 static void dw_mci_rockchip_prepare_command(struct dw_mci *host, u32 *cmdr)
30 *cmdr |= SDMMC_CMD_USE_HOLD_REG;
33 static const struct dw_mci_drv_data rockchip_drv_data = {
34 .prepare_command = dw_mci_rockchip_prepare_command,
37 int dw_mci_pltfm_register(struct platform_device *pdev,
38 const struct dw_mci_drv_data *drv_data)
41 struct resource *regs;
43 host = devm_kzalloc(&pdev->dev, sizeof(struct dw_mci), GFP_KERNEL);
47 host->irq = platform_get_irq(pdev, 0);
51 host->drv_data = drv_data;
52 host->dev = &pdev->dev;
54 host->pdata = pdev->dev.platform_data;
56 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
57 host->regs = devm_ioremap_resource(&pdev->dev, regs);
58 if (IS_ERR(host->regs))
59 return PTR_ERR(host->regs);
61 platform_set_drvdata(pdev, host);
62 return dw_mci_probe(host);
64 EXPORT_SYMBOL_GPL(dw_mci_pltfm_register);
66 #ifdef CONFIG_PM_SLEEP
68 * TODO: we should probably disable the clock to the card in the suspend path.
70 static int dw_mci_pltfm_suspend(struct device *dev)
72 struct dw_mci *host = dev_get_drvdata(dev);
74 return dw_mci_suspend(host);
77 static int dw_mci_pltfm_resume(struct device *dev)
79 struct dw_mci *host = dev_get_drvdata(dev);
81 return dw_mci_resume(host);
84 #define dw_mci_pltfm_suspend NULL
85 #define dw_mci_pltfm_resume NULL
86 #endif /* CONFIG_PM_SLEEP */
88 SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
89 EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops);
91 static const struct of_device_id dw_mci_pltfm_match[] = {
92 { .compatible = "snps,dw-mshc", },
93 { .compatible = "rockchip,rk2928-dw-mshc",
94 .data = &rockchip_drv_data },
97 MODULE_DEVICE_TABLE(of, dw_mci_pltfm_match);
99 static int dw_mci_pltfm_probe(struct platform_device *pdev)
101 const struct dw_mci_drv_data *drv_data = NULL;
102 const struct of_device_id *match;
104 if (pdev->dev.of_node) {
105 match = of_match_node(dw_mci_pltfm_match, pdev->dev.of_node);
106 drv_data = match->data;
109 return dw_mci_pltfm_register(pdev, drv_data);
112 int dw_mci_pltfm_remove(struct platform_device *pdev)
114 struct dw_mci *host = platform_get_drvdata(pdev);
119 EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove);
121 static struct platform_driver dw_mci_pltfm_driver = {
122 .probe = dw_mci_pltfm_probe,
123 .remove = dw_mci_pltfm_remove,
126 .of_match_table = of_match_ptr(dw_mci_pltfm_match),
127 .pm = &dw_mci_pltfm_pmops,
131 module_platform_driver(dw_mci_pltfm_driver);
133 MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
134 MODULE_AUTHOR("NXP Semiconductor VietNam");
135 MODULE_AUTHOR("Imagination Technologies Ltd");
136 MODULE_LICENSE("GPL v2");