diff options
| author | Girish K S <ks.giri@samsung.com> | 2012-10-08 14:06:33 +0900 |
|---|---|---|
| committer | Tushar Behera <tushar.behera@linaro.org> | 2013-07-22 16:56:04 +0530 |
| commit | c7b96bd9d3b742d72104e47701e80de8d2fd56b5 (patch) | |
| tree | a0db316c8f4b82d48821c5523ba95196f507fe42 | |
| parent | 81ddd008d1e74b388dd22508f5b169916a9cb010 (diff) | |
usb: ehci-s5p: add the HSIC port initializationtracking-arndale-core-support-llct-20130807.0tracking-arndale-core-support-llct-20130801.0llct-arndale-core-support-v3.11
The hub-reset and hub-connect pins should be pulled low before phy init
and need to be pulled high after completion of phy init.
Signed-off-by: Girish K S <ks.giri@samsung.com>
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
| -rw-r--r-- | drivers/usb/host/ehci-s5p.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c index 7cc26e621aa7..1fc0d1c87d43 100644 --- a/drivers/usb/host/ehci-s5p.c +++ b/drivers/usb/host/ehci-s5p.c @@ -54,6 +54,25 @@ static struct s5p_ehci_platdata empty_platdata; #define to_s5p_ehci(hcd) (struct s5p_ehci_hcd *)(hcd_to_ehci(hcd)->priv) +static void s5p_setup_hub_gpio(struct platform_device *pdev, const char *propname, int level) +{ + int err; + int gpio; + + if (!pdev->dev.of_node) + return; + + gpio = of_get_named_gpio(pdev->dev.of_node, propname, 0); + if (!gpio_is_valid(gpio)) + return; + err = gpio_request_one(gpio, level, "ehci_vbus_gpio"); + + if (err) + dev_err(&pdev->dev, "can't request ehci hub-reset gpio %d", gpio); + else + gpio_free(gpio); +} + static void s5p_setup_vbus_gpio(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -165,11 +184,18 @@ skip_phy: if (s5p_ehci->otg) s5p_ehci->otg->set_host(s5p_ehci->otg, &hcd->self); + s5p_setup_hub_gpio(pdev, "hub-reset", GPIOF_OUT_INIT_LOW); + s5p_setup_hub_gpio(pdev, "hub-connect", GPIOF_OUT_INIT_LOW); + if (s5p_ehci->phy) usb_phy_init(s5p_ehci->phy); else if (s5p_ehci->pdata->phy_init) s5p_ehci->pdata->phy_init(pdev, USB_PHY_TYPE_HOST); + mdelay(1); + s5p_setup_hub_gpio(pdev, "hub-reset", GPIOF_OUT_INIT_HIGH); + s5p_setup_hub_gpio(pdev, "hub-connect", GPIOF_OUT_INIT_HIGH); + ehci = hcd_to_ehci(hcd); ehci->caps = hcd->regs; |