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[1/2] USB: dwc3-exynos: Add support for device tree

Message ID 1350136052-25583-2-git-send-email-gautam.vivek@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Vivek Gautam Oct. 13, 2012, 1:47 p.m. UTC
This patch adds support to parse probe data for
dwc3 driver for exynos using device tree

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
---
 drivers/usb/dwc3/dwc3-exynos.c |   22 ++++++++++++++++++++++
 1 files changed, 22 insertions(+), 0 deletions(-)

Comments

Kishon Vijay Abraham I Oct. 13, 2012, 1:54 p.m. UTC | #1
Hi,

On Saturday 13 October 2012 07:17 PM, Vivek Gautam wrote:
> This patch adds support to parse probe data for
> dwc3 driver for exynos using device tree
>
> Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
> ---
>   drivers/usb/dwc3/dwc3-exynos.c |   22 ++++++++++++++++++++++
>   1 files changed, 22 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
> index ca65978..78e6219 100644
> --- a/drivers/usb/dwc3/dwc3-exynos.c
> +++ b/drivers/usb/dwc3/dwc3-exynos.c
> @@ -21,6 +21,7 @@
>   #include <linux/clk.h>
>   #include <linux/usb/otg.h>
>   #include <linux/usb/nop-usb-xceiv.h>
> +#include <linux/of.h>
>
>   #include "core.h"
>
> @@ -87,6 +88,8 @@ err1:
>   	return ret;
>   }
>
> +static u64 dwc3_exynos_dma_mask = DMA_BIT_MASK(32);
> +
>   static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
>   {
>   	struct dwc3_exynos_data	*pdata = pdev->dev.platform_data;
> @@ -103,6 +106,16 @@ static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
>   		goto err0;
>   	}
>
> +	/*
> +	 * 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 = &dwc3_exynos_dma_mask;
> +	if (!pdev->dev.coherent_dma_mask)
> +		pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);

of/platform.c shows coherent_dma_mask is set for dt.

Thanks
Kishon
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diff mbox

Patch

diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index ca65978..78e6219 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -21,6 +21,7 @@ 
 #include <linux/clk.h>
 #include <linux/usb/otg.h>
 #include <linux/usb/nop-usb-xceiv.h>
+#include <linux/of.h>
 
 #include "core.h"
 
@@ -87,6 +88,8 @@  err1:
 	return ret;
 }
 
+static u64 dwc3_exynos_dma_mask = DMA_BIT_MASK(32);
+
 static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
 {
 	struct dwc3_exynos_data	*pdata = pdev->dev.platform_data;
@@ -103,6 +106,16 @@  static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
 		goto err0;
 	}
 
+	/*
+	 * 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 = &dwc3_exynos_dma_mask;
+	if (!pdev->dev.coherent_dma_mask)
+		pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+
 	platform_set_drvdata(pdev, exynos);
 
 	devid = dwc3_get_device_id();
@@ -200,11 +213,20 @@  static int __devexit dwc3_exynos_remove(struct platform_device *pdev)
 	return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id exynos_dwc3_match[] = {
+	{ .compatible = "samsung,exynos-dwc3" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, exynos_dwc3_match);
+#endif
+
 static struct platform_driver dwc3_exynos_driver = {
 	.probe		= dwc3_exynos_probe,
 	.remove		= __devexit_p(dwc3_exynos_remove),
 	.driver		= {
 		.name	= "exynos-dwc3",
+		.of_match_table = of_match_ptr(exynos_dwc3_match),
 	},
 };