2 * dwc3-exynos.c - Samsung EXYNOS DWC3 Specific Glue layer
4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com
7 * Author: Anton Tikhomirov <av.tikhomirov@samsung.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
15 #include <linux/module.h>
16 #include <linux/kernel.h>
17 #include <linux/slab.h>
18 #include <linux/platform_device.h>
19 #include <linux/platform_data/dwc3-exynos.h>
20 #include <linux/dma-mapping.h>
21 #include <linux/module.h>
22 #include <linux/clk.h>
27 struct platform_device
*dwc3
;
33 static int __devinit
dwc3_exynos_probe(struct platform_device
*pdev
)
35 struct dwc3_exynos_data
*pdata
= pdev
->dev
.platform_data
;
36 struct platform_device
*dwc3
;
37 struct dwc3_exynos
*exynos
;
43 exynos
= kzalloc(sizeof(*exynos
), GFP_KERNEL
);
45 dev_err(&pdev
->dev
, "not enough memory\n");
49 platform_set_drvdata(pdev
, exynos
);
51 devid
= dwc3_get_device_id();
55 dwc3
= platform_device_alloc("dwc3", devid
);
57 dev_err(&pdev
->dev
, "couldn't allocate dwc3 device\n");
61 clk
= clk_get(&pdev
->dev
, "usbdrd30");
63 dev_err(&pdev
->dev
, "couldn't get clock\n");
68 dma_set_coherent_mask(&dwc3
->dev
, pdev
->dev
.coherent_dma_mask
);
70 dwc3
->dev
.parent
= &pdev
->dev
;
71 dwc3
->dev
.dma_mask
= pdev
->dev
.dma_mask
;
72 dwc3
->dev
.dma_parms
= pdev
->dev
.dma_parms
;
74 exynos
->dev
= &pdev
->dev
;
77 clk_enable(exynos
->clk
);
79 /* PHY initialization */
81 dev_dbg(&pdev
->dev
, "missing platform data\n");
84 pdata
->phy_init(pdev
, pdata
->phy_type
);
87 ret
= platform_device_add_resources(dwc3
, pdev
->resource
,
90 dev_err(&pdev
->dev
, "couldn't add resources to dwc3 device\n");
94 ret
= platform_device_add(dwc3
);
96 dev_err(&pdev
->dev
, "failed to register dwc3 device\n");
103 if (pdata
&& pdata
->phy_exit
)
104 pdata
->phy_exit(pdev
, pdata
->phy_type
);
109 platform_device_put(dwc3
);
111 dwc3_put_device_id(devid
);
118 static int __devexit
dwc3_exynos_remove(struct platform_device
*pdev
)
120 struct dwc3_exynos
*exynos
= platform_get_drvdata(pdev
);
121 struct dwc3_exynos_data
*pdata
= pdev
->dev
.platform_data
;
123 platform_device_unregister(exynos
->dwc3
);
125 dwc3_put_device_id(exynos
->dwc3
->id
);
127 if (pdata
&& pdata
->phy_exit
)
128 pdata
->phy_exit(pdev
, pdata
->phy_type
);
130 clk_disable(exynos
->clk
);
131 clk_put(exynos
->clk
);
138 static struct platform_driver dwc3_exynos_driver
= {
139 .probe
= dwc3_exynos_probe
,
140 .remove
= __devexit_p(dwc3_exynos_remove
),
142 .name
= "exynos-dwc3",
146 module_platform_driver(dwc3_exynos_driver
);
148 MODULE_ALIAS("platform:exynos-dwc3");
149 MODULE_AUTHOR("Anton Tikhomirov <av.tikhomirov@samsung.com>");
150 MODULE_LICENSE("GPL");
151 MODULE_DESCRIPTION("DesignWare USB3 EXYNOS Glue Layer");