On Sat, Apr 26, 2014 at 02:10:21AM +0800, Felipe Balbi wrote:
> On Fri, Apr 25, 2014 at 02:27:11PM +0530, Pratyush Anand wrote:
> > On Tue, Apr 22, 2014 at 10:41:06PM +0800, Felipe Balbi wrote:
> > > On Tue, Apr 22, 2014 at 10:46:13AM +0530, Pratyush Anand wrote:
> > > > On Tue, Apr 22, 2014 at 12:43:55PM +0800, Felipe Balbi wrote:
> > > > > On Tue, Apr 22, 2014 at 09:57:29AM +0530, Pratyush Anand wrote:
> > > > > > All dwc3 based xhci host controller supports USB3.0 LPM functionality.
> > > > > > Therefore enable quirk flag to support it for dwc3 xhci host driver.
> > > > > >
> > > > > > Signed-off-by: Pratyush Anand <pratyush.anand@xxxxxx>
> > > > > > Tested-by: Aymen Bouattay <aymen.bouattay@xxxxxx>
> > > > > > ---
> > > > > > drivers/usb/dwc3/host.c | 1 +
> > > > > > 1 file changed, 1 insertion(+)
> > > > > >
> > > > > > diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
> > > > > > index a362ed9..b0e4669 100644
> > > > > > --- a/drivers/usb/dwc3/host.c
> > > > > > +++ b/drivers/usb/dwc3/host.c
> > > > > > @@ -86,6 +86,7 @@ int dwc3_host_init(struct dwc3 *dwc)
> > > > > > hcd = platform_get_drvdata(xhci);
> > > > > > xhci_dev = hcd_to_xhci(hcd);
> > > > > > xhci_dev->shared_hcd->phy = dwc->usb3_phy;
> > > > > > + xhci_dev->quirks |= XHCI_LPM_SUPPORT;
> > > > >
> > > > > weird... what sort of changes do you have which you didn't send yet ?
> > > > > dwc3/host.c does not create the xHCI device. dwc3_host_init() is
> > > > > basically a wrapper to platform_add_device()
> > > >
> > > > There is nothing, and it works.
> > > >
> > > > Adding platform xhci driver in defconfig and selecting dwc3 in DT is sufficient.
> > > > Did I get, what you were asking?
> > >
> > > this little hunk below will never apply to dwc3/host.c:
> > >
> > > diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
> > > index a362ed9..b0e4669 100644
> > > --- a/drivers/usb/dwc3/host.c
> > > +++ b/drivers/usb/dwc3/host.c
> > > @@ -86,6 +86,7 @@ int dwc3_host_init(struct dwc3 *dwc)
> > > hcd = platform_get_drvdata(xhci);
> > > xhci_dev = hcd_to_xhci(hcd);
> > > xhci_dev->shared_hcd->phy = dwc->usb3_phy;
> > > + xhci_dev->quirks |= XHCI_LPM_SUPPORT;
> > >
> > >
> > > here are dwc3/host.c contents as of v3.15-rc2 (removed comments)
> > >
> > > #include <linux/platform_device.h>
> > >
> > > #include "core.h"
> > >
> > > int dwc3_host_init(struct dwc3 *dwc)
> > > {
> > > struct platform_device *xhci;
> > > int ret;
> > >
> > > xhci = platform_device_alloc("xhci-hcd", PLATFORM_DEVID_AUTO);
> > > if (!xhci) {
> > > dev_err(dwc->dev, "couldn't allocate xHCI device\n");
> > > ret = -ENOMEM;
> > > goto err0;
> > > }
> > >
> > > dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
> > >
> > > xhci->dev.parent = dwc->dev;
> > > xhci->dev.dma_mask = dwc->dev->dma_mask;
> > > xhci->dev.dma_parms = dwc->dev->dma_parms;
> > >
> > > dwc->xhci = xhci;
> > >
> > > ret = platform_device_add_resources(xhci, dwc->xhci_resources,
> > > DWC3_XHCI_RESOURCES_NUM);
> > > if (ret) {
> > > dev_err(dwc->dev, "couldn't add resources to xHCI device\n");
> > > goto err1;
> > > }
> > >
> > > ret = platform_device_add(xhci);
> > > if (ret) {
> > > dev_err(dwc->dev, "failed to register xHCI device\n");
> > > goto err1;
> > > }
> > >
> > > return 0;
> > >
> > > err1:
> > > platform_device_put(xhci);
> > >
> > > err0:
> > > return ret;
> > > }
> > >
> > > void dwc3_host_exit(struct dwc3 *dwc)
> > > {
> > > platform_device_unregister(dwc->xhci);
> > > }
> > >
> > > as you can see, there is no such thing as xhci_dev variable.
> >
> > OK....I see..
> > I will rebase it with latest code.
>
> please do and show me test results. considering that hunk was *never*
> part of dwc3-host I'm assuming you're taking patches from internal
> vendor kernel and not even testing anything in mainline. I need to see
> some test results before I can take your patches. Sorry
Yaa, Sure.. I have patches ready but I am on leave these days. So not
sending. Will send only after proper testing next week. I will insure
that rebased patches without any dependency to internal kernel have been
tested on hardware.
Pratyush
>
> cheers
>
> --
> balbi
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