On Thu, Sep 08, 2016 at 02:13:28PM -0700, Stephen Boyd wrote: > Quoting Peter Chen (2016-09-07 19:06:45) > > On Thu, Sep 8, 2016 at 5:34 AM, Stephen Boyd <stephen.boyd@xxxxxxxxxx> wrote: > > > The state of USB ChipIdea support on Qualcomm's platforms is not great. > > > The DT description of these devices requires up to three different nodes > > > for what amounts to be the same hardware block, when there should really > > > only be one. Furthermore, the "phy" driver that is in mainline (phy-msm-usb.c) > > > duplicates the OTG state machine and touches the ci controller wrapper > > > registers when it should really be focused on the phy and the ULPI accesses > > > needed to get the phy working. There's also a slimmed down phy driver for > > > the msm8916 platform, but really the phy hardware is the same as other MSMs, > > > so we have two drivers doing pretty much the same thing. This leads to a > > > situtaion where we have the chipidea core driver, the "phy" driver, and > > > sometimes the ehci-msm.c driver operating the same device all at the same > > > time with very little coordination. This just isn't very safe and is > > > confusing from a driver perspective when trying to figure out who does what. > > > Finally, there isn't any HSIC support on platforms like apq8074 so we > > > should add that. > > > > > > This patch series updates the ChipIdea driver and the MSM wrapper > > > (ci_hdrc_msm.c) to properly handle the PHY and wrapper bits at the right > > > times in the right places. To get there, we update the ChipIdea core to > > > have support for the ULPI phy bus introduced by Heikki. Along the way > > > we fix bugs with the extcon handling for peripheral and OTG mode controllers > > > and move the parts of phy-usb-msm.c that are touching the CI controller > > > wrapper into the wrapper driver (ci_hdrc_msm.c). Finally we add support > > > for the HSIC phy based on the ULPI bus and rewrite the HS phy driver > > > (phy-usb-msm.c) as a standard ULPI phy driver. > > > > > > Once this series is accepted, we should be able to delete the phy-usb-msm.c, > > > phy-qcom-8x16-usb.c, and ehci-msm.c drivers from the tree and use the ULPI > > > based phy driver (which also lives in drivers/phy/ instead of drivers/usb/phy/) > > > and the chipidea host core instead. > > > > > > I've also sent separate patches for other minor pieces to make this > > > all work. The full tree can be found here[3], hacks and all to get > > > things working. I've tested this on the db410c, apq8074 dragonboard, > > > and ifc6410 with configfs gadgets and otg cables. > > > > > > Patches based on v4.8-rc1 > > > > > > Changes from v3: > > > > > > * Picked up Acks from Peter > > > > > > * Updated extcon consolidation patch per Peter's comments > > > > > > * Folded in simplification from Heikki for ULPI DT matching > > > > > > > I find the kbuild dependency error when compile your series, I remembered > > someone met it before, would you have a solution: > > Yes. Should I send it through the drm maintainers? > Yes, please add me at cc list, thanks. Peter > ---8<--- > From: Stephen Boyd <stephen.boyd@xxxxxxxxxx> > Subject: [PATCH] gpu: Remove depends on RESET_CONTROLLER when not a provider > > These GPU drivers only depend on the RESET_CONTROLLER config > option to fix build issues that existed when there weren't stub > reset APIs for reset controller consumers. Given that these > drivers aren't providing any reset controllers themselves, they > don't actually depend on the API to build (just to function) so > they don't need to depend on it. Remove the dependency to fix > recursive build errors like the following: > > drivers/usb/Kconfig:39:error: recursive dependency detected! > drivers/usb/Kconfig:39: symbol USB is selected by MOUSE_APPLETOUCH > drivers/input/mouse/Kconfig:187: symbol MOUSE_APPLETOUCH depends on INPUT > drivers/input/Kconfig:8: symbol INPUT is selected by VT > drivers/tty/Kconfig:12: symbol VT is selected by FB_STI > drivers/video/fbdev/Kconfig:674: symbol FB_STI depends on FB > drivers/video/fbdev/Kconfig:5: symbol FB is selected by DRM_KMS_FB_HELPER > drivers/gpu/drm/Kconfig:42: symbol DRM_KMS_FB_HELPER is selected by DRM_KMS_CMA_HELPER > drivers/gpu/drm/Kconfig:98: symbol DRM_KMS_CMA_HELPER is selected by DRM_IMX > drivers/gpu/drm/imx/Kconfig:1: symbol DRM_IMX depends on IMX_IPUV3_CORE > drivers/gpu/ipu-v3/Kconfig:1: symbol IMX_IPUV3_CORE depends on RESET_CONTROLLER > drivers/reset/Kconfig:4: symbol RESET_CONTROLLER is selected by USB_CHIPIDEA > drivers/usb/chipidea/Kconfig:1: symbol USB_CHIPIDEA depends on USB_EHCI_HCD > drivers/usb/host/Kconfig:84: symbol USB_EHCI_HCD depends on USB > > Cc: Arnd Bergmann <arnd@xxxxxxxx> > Cc: David Airlie <airlied@xxxxxxxx> > Cc: <dri-devel@xxxxxxxxxxxxxxxxxxxxx> > Cc: Heiko Stuebner <heiko@xxxxxxxxx> > Cc: Mark Yao <mark.yao@xxxxxxxxxxxxxx> > Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> > Signed-off-by: Stephen Boyd <stephen.boyd@xxxxxxxxxx> > --- > drivers/gpu/drm/rockchip/Kconfig | 1 - > drivers/gpu/drm/tegra/Kconfig | 1 - > drivers/gpu/ipu-v3/Kconfig | 1 - > 3 files changed, 3 deletions(-) > > diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig > index 3c58669a06ce..6f7f9c59f05b 100644 > --- a/drivers/gpu/drm/rockchip/Kconfig > +++ b/drivers/gpu/drm/rockchip/Kconfig > @@ -1,7 +1,6 @@ > config DRM_ROCKCHIP > tristate "DRM Support for Rockchip" > depends on DRM && ROCKCHIP_IOMMU > - depends on RESET_CONTROLLER > select DRM_GEM_CMA_HELPER > select DRM_KMS_HELPER > select DRM_PANEL > diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig > index 63ebb154b9b5..bbf5a4b7e0b6 100644 > --- a/drivers/gpu/drm/tegra/Kconfig > +++ b/drivers/gpu/drm/tegra/Kconfig > @@ -3,7 +3,6 @@ config DRM_TEGRA > depends on ARCH_TEGRA || (ARM && COMPILE_TEST) > depends on COMMON_CLK > depends on DRM > - depends on RESET_CONTROLLER > select DRM_KMS_HELPER > select DRM_MIPI_DSI > select DRM_PANEL > diff --git a/drivers/gpu/ipu-v3/Kconfig b/drivers/gpu/ipu-v3/Kconfig > index aefdff95356d..08766c6e7856 100644 > --- a/drivers/gpu/ipu-v3/Kconfig > +++ b/drivers/gpu/ipu-v3/Kconfig > @@ -1,7 +1,6 @@ > config IMX_IPUV3_CORE > tristate "IPUv3 core support" > depends on SOC_IMX5 || SOC_IMX6Q || ARCH_MULTIPLATFORM > - depends on RESET_CONTROLLER > select GENERIC_IRQ_CHIP > help > Choose this if you have a i.MX5/6 system and want to use the Image > -- > 2.9.0.rc2.8.ga28705d -- Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
