diff options
| author | sgadagottu <sgadagottu@nvidia.com> | 2010-03-03 19:35:14 +0530 |
|---|---|---|
| committer | Gary King <gking@nvidia.com> | 2010-03-03 19:56:49 -0800 |
| commit | 17f12ae875e3afedaaaca474b46d3ccd5150bea0 (patch) | |
| tree | ccdac45f6da36bbe0b0460d512b219c8141fbf2e /drivers | |
| parent | 7a44e354c4cf1f369978efe679e7be888a7b47a4 (diff) | |
tegra usb: Making USB busy hints off on resume, when there is no adb
cable/usb device connection
Currently on resume from LP1, though there is no adb cable/USB device connected to
USB1/USB3 then also usb busy hints are getting on. With this change on resume:
For gadget driver, if cable is not connected then busy hints made off.
For host driver, if device(s) are not connected then busy hints are off.
Code Clean-up for power improvement
Tested on : Whistler board USB1 OTG + USB3 host
Tested with all possible connection on USB1 and USB3
Change-Id: I6d210bba1264d9c0134d586d3f67ff609ba2b3fe
Reviewed-on: http://git-master/r/745
Reviewed-by: Narendra Damahe <ndamahe@nvidia.com>
Tested-by: Narendra Damahe <ndamahe@nvidia.com>
Reviewed-by: Gary King <gking@nvidia.com>
Tested-by: Gary King <gking@nvidia.com>
Diffstat (limited to 'drivers')
| -rwxr-xr-x | drivers/usb/gadget/fsl_udc_core.c | 5 | ||||
| -rwxr-xr-x | drivers/usb/host/ehci-tegra.c | 16 |
2 files changed, 20 insertions, 1 deletions
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index 33502502c67e..f30912b62fca 100755 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -2764,6 +2764,11 @@ static int fsl_udc_resume(struct platform_device *pdev) udc_controller->usb_state = USB_STATE_ATTACHED; udc_controller->ep0_state = WAIT_FOR_SETUP; udc_controller->ep0_dir = 0; + + /* Power down the phy if cable is not connected */ + if (!(fsl_readl(&usb_sys_regs->vbus_wakeup) & USB_SYS_VBUS_STATUS)) + platform_udc_clk_suspend(); + return 0; } diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index cc1e51581c8f..b2469e5fbab8 100755 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -320,11 +320,13 @@ static int tegra_ehci_bus_resume(struct usb_hcd *hcd) { struct ehci_hcd *ehci = hcd_to_ehci(hcd); int err_status = 0; + u32 status; -#ifdef CONFIG_USB_OTG_UTILS struct tegra_hcd_platform_data *pdata; /* initialize the platform data pointer */ pdata = hcd->self.controller->platform_data; + +#ifdef CONFIG_USB_OTG_UTILS if ((pdata->pUsbProperty->UsbMode == NvOdmUsbModeType_OTG) && ehci->transceiver) { if (ehci->transceiver->state != OTG_STATE_A_HOST) { @@ -338,6 +340,18 @@ static int tegra_ehci_bus_resume(struct usb_hcd *hcd) tegra_ehci_power_up(hcd); err_status = ehci_bus_resume(hcd); } + + if ((pdata->pUsbProperty->UsbMode != NvOdmUsbModeType_OTG) + && (pdata->pUsbProperty->IdPinDetectionType == + NvOdmUsbIdPinType_CableId)) { + /* read otgsc register for ID pin status */ + status = readl(hcd->regs + TEGRA_USB_PHY_WAKEUP_REG_OFFSET); + writel(status, (hcd->regs + TEGRA_USB_PHY_WAKEUP_REG_OFFSET)); + /* If no Id pin then disable the power */ + if (status & TEGRA_USB_ID_PIN_STATUS) { + tegra_ehci_power_down(hcd); + } + } return err_status; } |