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Commit 2c026e2b authored by Vivek Gautam's avatar Vivek Gautam Committed by Greg Kroah-Hartman
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USB: ehci-s5p: Add support for device tree 



This patch adds support to parse probe data for
ehci 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 d5138930

drivers/usb/host/ehci-s5p.c

+22 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
 */



#include <linux/clk.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <plat/ehci.h>

#include <plat/usb-phy.h>
@@ -63,6 +64,8 @@ static const struct hc_driver s5p_ehci_hc_driver = { 
	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,

};



static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32);



static int __devinit s5p_ehci_probe(struct platform_device *pdev)

{

	struct s5p_ehci_platdata *pdata;
@@ -79,6 +82,16 @@ static int __devinit s5p_ehci_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 = &ehci_s5p_dma_mask;

	if (!pdev->dev.coherent_dma_mask)

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



	s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd),

				GFP_KERNEL);

	if (!s5p_ehci)
@@ -233,6 +246,14 @@ static const struct dev_pm_ops s5p_ehci_pm_ops = { 
	.resume		= s5p_ehci_resume,

};



#ifdef CONFIG_OF

static const struct of_device_id exynos_ehci_match[] = {

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

	{},

};

MODULE_DEVICE_TABLE(of, exynos_ehci_match);

#endif



static struct platform_driver s5p_ehci_driver = {

	.probe		= s5p_ehci_probe,

	.remove		= __devexit_p(s5p_ehci_remove),
@@ -241,6 +262,7 @@ static struct platform_driver s5p_ehci_driver = { 
		.name	= "s5p-ehci",

		.owner	= THIS_MODULE,

		.pm	= &s5p_ehci_pm_ops,

		.of_match_table = of_match_ptr(exynos_ehci_match),

	}

};