From fd81d59c90d38661e4891ee2f4c9b7c051e93022 Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Tue, 17 Jul 2012 10:10:50 +0530 Subject: USB: ehci-s5p: Add vbus setup function to the s5p ehci glue layer 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 Signed-off-by: Vivek Gautam Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-s5p.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers/usb') diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index 37d84cf9a408..9d8f1dd57cb3 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -64,6 +65,24 @@ static const struct hc_driver s5p_ehci_hc_driver = { .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, }; +static void s5p_setup_vbus_gpio(struct platform_device *pdev) +{ + int err; + int gpio; + + if (!pdev->dev.of_node) + return; + + gpio = of_get_named_gpio(pdev->dev.of_node, + "samsung,vbus-gpio", 0); + if (!gpio_is_valid(gpio)) + return; + + 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); +} + static u64 ehci_s5p_dma_mask = DMA_BIT_MASK(32); static int __devinit s5p_ehci_probe(struct platform_device *pdev) @@ -92,6 +111,8 @@ 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_setup_vbus_gpio(pdev); + s5p_ehci = devm_kzalloc(&pdev->dev, sizeof(struct s5p_ehci_hcd), GFP_KERNEL); if (!s5p_ehci) -- cgit v1.2.3-55-g7522