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>
24 #include <linux/clk.h>
27 #include "dw_mmc-pltfm.h"
29 static void dw_mci_pltfm_prepare_command(struct dw_mci
*host
, u32
*cmdr
)
31 *cmdr
|= SDMMC_CMD_USE_HOLD_REG
;
34 static const struct dw_mci_drv_data socfpga_drv_data
= {
35 .prepare_command
= dw_mci_pltfm_prepare_command
,
38 static const struct dw_mci_drv_data pistachio_drv_data
= {
39 .prepare_command
= dw_mci_pltfm_prepare_command
,
42 int dw_mci_pltfm_register(struct platform_device
*pdev
,
43 const struct dw_mci_drv_data
*drv_data
)
46 struct resource
*regs
;
48 host
= devm_kzalloc(&pdev
->dev
, sizeof(struct dw_mci
), GFP_KERNEL
);
52 host
->irq
= platform_get_irq(pdev
, 0);
56 host
->drv_data
= drv_data
;
57 host
->dev
= &pdev
->dev
;
59 host
->pdata
= pdev
->dev
.platform_data
;
61 regs
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
62 /* Get registers' physical base address */
63 host
->phy_regs
= regs
->start
;
64 host
->regs
= devm_ioremap_resource(&pdev
->dev
, regs
);
65 if (IS_ERR(host
->regs
))
66 return PTR_ERR(host
->regs
);
68 platform_set_drvdata(pdev
, host
);
69 return dw_mci_probe(host
);
71 EXPORT_SYMBOL_GPL(dw_mci_pltfm_register
);
73 #ifdef CONFIG_PM_SLEEP
75 * TODO: we should probably disable the clock to the card in the suspend path.
77 static int dw_mci_pltfm_suspend(struct device
*dev
)
79 struct dw_mci
*host
= dev_get_drvdata(dev
);
81 return dw_mci_suspend(host
);
84 static int dw_mci_pltfm_resume(struct device
*dev
)
86 struct dw_mci
*host
= dev_get_drvdata(dev
);
88 return dw_mci_resume(host
);
90 #endif /* CONFIG_PM_SLEEP */
92 SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops
, dw_mci_pltfm_suspend
, dw_mci_pltfm_resume
);
93 EXPORT_SYMBOL_GPL(dw_mci_pltfm_pmops
);
95 static const struct of_device_id dw_mci_pltfm_match
[] = {
96 { .compatible
= "snps,dw-mshc", },
97 { .compatible
= "altr,socfpga-dw-mshc",
98 .data
= &socfpga_drv_data
},
99 { .compatible
= "img,pistachio-dw-mshc",
100 .data
= &pistachio_drv_data
},
103 MODULE_DEVICE_TABLE(of
, dw_mci_pltfm_match
);
105 static int dw_mci_pltfm_probe(struct platform_device
*pdev
)
107 const struct dw_mci_drv_data
*drv_data
= NULL
;
108 const struct of_device_id
*match
;
110 if (pdev
->dev
.of_node
) {
111 match
= of_match_node(dw_mci_pltfm_match
, pdev
->dev
.of_node
);
112 drv_data
= match
->data
;
115 return dw_mci_pltfm_register(pdev
, drv_data
);
118 int dw_mci_pltfm_remove(struct platform_device
*pdev
)
120 struct dw_mci
*host
= platform_get_drvdata(pdev
);
125 EXPORT_SYMBOL_GPL(dw_mci_pltfm_remove
);
127 static struct platform_driver dw_mci_pltfm_driver
= {
128 .probe
= dw_mci_pltfm_probe
,
129 .remove
= dw_mci_pltfm_remove
,
132 .of_match_table
= dw_mci_pltfm_match
,
133 .pm
= &dw_mci_pltfm_pmops
,
137 module_platform_driver(dw_mci_pltfm_driver
);
139 MODULE_DESCRIPTION("DW Multimedia Card Interface driver");
140 MODULE_AUTHOR("NXP Semiconductor VietNam");
141 MODULE_AUTHOR("Imagination Technologies Ltd");
142 MODULE_LICENSE("GPL v2");