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Commit d5138930 authored by Vivek Gautam's avatar Vivek Gautam Committed by Greg Kroah-Hartman
Browse files

USB: ohci-exynos: Add support for device tree 



This patch adds support to parse probe data for
ohci driver for exynos using device tree.

Signed-off-by: default avatarThomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: default avatarAbhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: default avatarVivek Gautam <gautam.vivek@samsung.com>
Acked-by: default avatarJingoo Han <jg1.han@samsung.com>
Acked-by: default avatarAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ba5952e0

drivers/usb/host/ohci-exynos.c

+22 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
 */



#include <linux/clk.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <mach/ohci.h>

#include <plat/usb-phy.h>
@@ -71,6 +72,8 @@ static const struct hc_driver exynos_ohci_hc_driver = { 
	.start_port_reset	= ohci_start_port_reset,

};



static u64 ohci_exynos_dma_mask = DMA_BIT_MASK(32);



static int __devinit exynos_ohci_probe(struct platform_device *pdev)

{

	struct exynos4_ohci_platdata *pdata;
@@ -87,6 +90,16 @@ static int __devinit exynos_ohci_probe(struct platform_device *pdev) 
		return -EINVAL;

	}



	/*

	 * Right now device-tree probed devices don't get dma_mask set.

	 * Since shared usb code relies on it, set it here for now.

	 * Once we move to full device tree support this will vanish off.

	 */

	if (!pdev->dev.dma_mask)

		pdev->dev.dma_mask = &ohci_exynos_dma_mask;

	if (!pdev->dev.coherent_dma_mask)

		pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);



	exynos_ohci = devm_kzalloc(&pdev->dev, sizeof(struct exynos_ohci_hcd),

					GFP_KERNEL);

	if (!exynos_ohci)
@@ -256,6 +269,14 @@ static const struct dev_pm_ops exynos_ohci_pm_ops = { 
	.resume		= exynos_ohci_resume,

};



#ifdef CONFIG_OF

static const struct of_device_id exynos_ohci_match[] = {

	{ .compatible = "samsung,exynos-ohci" },

	{},

};

MODULE_DEVICE_TABLE(of, exynos_ohci_match);

#endif



static struct platform_driver exynos_ohci_driver = {

	.probe		= exynos_ohci_probe,

	.remove		= __devexit_p(exynos_ohci_remove),
@@ -264,6 +285,7 @@ static struct platform_driver exynos_ohci_driver = { 
		.name	= "exynos-ohci",

		.owner	= THIS_MODULE,

		.pm	= &exynos_ohci_pm_ops,

		.of_match_table	= of_match_ptr(exynos_ohci_match),

	}

};