Hi,
On Mon, Jul 16, 2012 at 11:27:39AM +0530, Vivek Gautam wrote:
> This patch retrieves and configures the vbus control gpio via
> the device tree. The suspend/resume callbacks will be later
> modified for vbus control.
>
> Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx>
> Signed-off-by: Vivek Gautam <gautam.vivek@xxxxxxxxxxx>
> ---
> drivers/usb/dwc3/dwc3-exynos.c | 25 +++++++++++++++++++++++++
> 1 files changed, 25 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
> index a293c69..9b0238f 100644
> --- a/drivers/usb/dwc3/dwc3-exynos.c
> +++ b/drivers/usb/dwc3/dwc3-exynos.c
> @@ -20,6 +20,7 @@
> #include <linux/dma-mapping.h>
> #include <linux/clk.h>
> #include <linux/of.h>
> +#include <linux/of_gpio.h>
>
> #include "core.h"
>
> @@ -30,6 +31,28 @@ struct dwc3_exynos {
> struct clk *clk;
> };
>
> +static int dwc3_setup_vbus_gpio(struct platform_device *pdev)
> +{
> + int err;
> + int gpio;
> +
> + if (!pdev->dev.of_node)
> + return 0;
> +
> + gpio = of_get_named_gpio(pdev->dev.of_node,
> + "samsung,vbus-gpio", 0);
> + if (!gpio_is_valid(gpio))
> + return 0;
> +
> + err = gpio_request_one(gpio, GPIOF_OUT_INIT_HIGH, "dwc3_vbus_gpio");
> + if (err) {
> + dev_err(&pdev->dev, "can't request dwc3 vbus gpio %d", gpio);
> + return err;
> + }
> +
> + return err;
> +}
> +
> static u64 dwc3_exynos_dma_mask = DMA_BIT_MASK(32);
>
> static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
> @@ -58,6 +81,8 @@ static int __devinit dwc3_exynos_probe(struct platform_device *pdev)
> if (!pdev->dev.coherent_dma_mask)
> pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
>
> + dwc3_setup_vbus_gpio(pdev);
I think this should be handled by the gpio-vbus transceiver. No ?
--
balbi
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