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
| ||
|
Date: Thu, 12 Jul 2012 11:30:03 +0530 From: Vivek Gautam <gautam.vivek@...sung.com> To: 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, jg1.han@...sung.com, jy0922.shim@...sung.com, sshtylyov@...sta.com, olofj@...gle.com Subject: [PATCH 2/2 v2] USB: dwc3-exynos: Add vbus setup function to the exynos dwc3 glue layer From: Abhilash Kesavan <a.kesavan@...sung.com> 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> diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 9ae91b7..5dd87c1 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -21,6 +21,7 @@ #include <linux/module.h> #include <linux/clk.h> #include <linux/of.h> +#include <linux/of_gpio.h> #include "core.h" @@ -31,6 +32,28 @@ 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) @@ -59,6 +82,8 @@ 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); + platform_set_drvdata(pdev, exynos); devid = dwc3_get_device_id(); -- 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/
Powered by blists - more mailing lists