linux-kernel - Re: [PATCH 3/3 v3] USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-id: <002901cd631d$ddbcc5f0$993651d0$%han@samsung.com>
Date:	Mon, 16 Jul 2012 15:40:18 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Vivek Gautam' <gautam.vivek@...sung.com>,
	stern@...land.harvard.edu, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org
Cc:	l.majewski@...sung.com, a.kesavan@...sung.com,
	prashanth.g@...sung.com, kmpark@...radead.org, joshi@...sung.com,
	olofj@...gle.com, jy0922.shim@...sung.com,
	thomas.abraham@...aro.org, sshtylyov@...sta.com,
	'Jingoo Han' <jg1.han@...sung.com>
Subject: Re: [PATCH 3/3 v3] USB: ehci-s5p: Add vbus setup function to the s5p
 ehci glue layer

On Monday, July 16, 2012 2:56 PM, 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@...sung.com>
> Signed-off-by: Vivek Gautam <gautam.vivek@...sung.com>

Acked-by: Jingoo Han <jg1.han@...sung.com>

> 
> diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
> index 37d84cf..4037878 100644
> --- a/drivers/usb/host/ehci-s5p.c
> +++ b/drivers/usb/host/ehci-s5p.c
> @@ -15,6 +15,7 @@
>  #include <linux/clk.h>
>  #include <linux/of.h>
>  #include <linux/platform_device.h>
> +#include <linux/of_gpio.h>
>  #include <plat/ehci.h>
>  #include <plat/usb-phy.h>
> 
> @@ -64,6 +65,28 @@ static const struct hc_driver s5p_ehci_hc_driver = {
>  	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
>  };
> 
> +static int s5p_ehci_setup_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, "ehci_vbus_gpio");
> +	if (err) {
> +		dev_err(&pdev->dev, "can't request ehci vbus gpio %d", gpio);
> +		return err;
> +	}
> +
> +	return err;
> +}
> +
>  static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32);
> 
>  static int __devinit s5p_ehci_probe(struct platform_device *pdev)
> @@ -92,6 +115,8 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
>  	if (!pdev->dev.coherent_dma_mask)
>  		pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
> 
> +	s5p_ehci_setup_gpio(pdev);
> +
>  	s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd),
>  				GFP_KERNEL);
>  	if (!s5p_ehci)
> --
> 1.7.0.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/