From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Chen Subject: Re: [PATCH v7 14/14] usb: host: xhci-plat: Add otg device to platform data Date: Wed, 11 May 2016 17:00:27 +0800 Message-ID: <20160511090027.GK16910@shlinux2.ap.freescale.net> References: <1462191537-10314-1-git-send-email-rogerq@ti.com> <1462191537-10314-15-git-send-email-rogerq@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1462191537-10314-15-git-send-email-rogerq@ti.com> Sender: linux-kernel-owner@vger.kernel.org To: Roger Quadros Cc: peter.chen@freescale.com, stern@rowland.harvard.edu, balbi@kernel.org, gregkh@linuxfoundation.org, dan.j.williams@intel.com, jun.li@freescale.com, mathias.nyman@linux.intel.com, tony@atomide.com, Joao.Pinto@synopsys.com, abrestic@chromium.org, yoshihiro.shimoda.uh@renesas.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, devicetree@vger.kernel.org List-Id: devicetree@vger.kernel.org On Mon, May 02, 2016 at 03:18:57PM +0300, Roger Quadros wrote: > Host controllers that are part of an OTG/dual-role instance > need to somehow pass the OTG controller device information > to the HCD core. > > We use platform data to pass the OTG controller device. > > Signed-off-by: Roger Quadros > --- > drivers/usb/host/xhci-plat.c | 35 ++++++++++++++++++++++++++++------- > include/linux/usb/xhci_pdriver.h | 3 +++ > 2 files changed, 31 insertions(+), 7 deletions(-) > > diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c > index 5c15e9b..84ebe18 100644 > --- a/drivers/usb/host/xhci-plat.c > +++ b/drivers/usb/host/xhci-plat.c > @@ -230,11 +230,20 @@ static int xhci_plat_probe(struct platform_device *pdev) > goto put_usb3_hcd; > } > > - ret = usb_add_hcd(hcd, irq, IRQF_SHARED); > + if (pdata && pdata->otg_dev) > + ret = usb_otg_add_hcd(hcd, irq, IRQF_SHARED, pdata->otg_dev); > + else > + ret = usb_add_hcd(hcd, irq, IRQF_SHARED); > + > if (ret) > goto disable_usb_phy; > > - ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); > + if (pdata && pdata->otg_dev) > + ret = usb_otg_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED, > + pdata->otg_dev); > + else > + ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED); > + > if (ret) > goto dealloc_usb2_hcd; > > @@ -242,7 +251,10 @@ static int xhci_plat_probe(struct platform_device *pdev) > > > dealloc_usb2_hcd: > - usb_remove_hcd(hcd); > + if (pdata && pdata->otg_dev) > + usb_otg_remove_hcd(hcd); > + else > + usb_remove_hcd(hcd); > > disable_usb_phy: > usb_phy_shutdown(hcd->usb_phy); > @@ -260,16 +272,25 @@ put_hcd: > return ret; > } > > -static int xhci_plat_remove(struct platform_device *dev) > +static int xhci_plat_remove(struct platform_device *pdev) > { > - struct usb_hcd *hcd = platform_get_drvdata(dev); > + struct usb_hcd *hcd = platform_get_drvdata(pdev); > struct xhci_hcd *xhci = hcd_to_xhci(hcd); > struct clk *clk = xhci->clk; > + struct usb_xhci_pdata *pdata = dev_get_platdata(&pdev->dev); > + > + if (pdata && pdata->otg_dev) > + usb_otg_remove_hcd(xhci->shared_hcd); > + else > + usb_remove_hcd(xhci->shared_hcd); > > - usb_remove_hcd(xhci->shared_hcd); > usb_phy_shutdown(hcd->usb_phy); > > - usb_remove_hcd(hcd); > + if (pdata && pdata->otg_dev) > + usb_otg_remove_hcd(hcd); > + else > + usb_remove_hcd(hcd); > + > usb_put_hcd(xhci->shared_hcd); > > if (!IS_ERR(clk)) > diff --git a/include/linux/usb/xhci_pdriver.h b/include/linux/usb/xhci_pdriver.h > index 376654b..5c68b83 100644 > --- a/include/linux/usb/xhci_pdriver.h > +++ b/include/linux/usb/xhci_pdriver.h > @@ -18,10 +18,13 @@ > * > * @usb3_lpm_capable: determines if this xhci platform supports USB3 > * LPM capability > + * @otg_dev: OTG controller device. Only requied if part of > + * OTG/dual-role. > * > */ > struct usb_xhci_pdata { > unsigned usb3_lpm_capable:1; > + struct device *otg_dev; > }; > > #endif /* __USB_CORE_XHCI_PDRIVER_H */ > -- > 2.7.4 > Reviewed-by: Peter Chen -- Best Regards, Peter Chen