Hi Greg, This serial adds power management (system & runtime) for chipidea core. With this, the chipidea controller can be at low power mode when it is not in use, and the chipidea controller can be the system wakeup source. It needs to depend on my patch[1], since [1]-"Add power management support for MXS PHY" adds some common PHY APIs, and this serial uses it. It has been verified at Freescale i.mx6Q/DL SabreSD, i.mx28 evk platform (no runtime pm support), I will verify it at other FSL platforms during the patch review. Hi Alan, Due to chipidea core and imx concontroller needs some special operations during the standard ehci routine, I override .hub_control, .bus_suspend, and .bus_resume. There is one special thing is I use flag ehci->bus_suspended to know it was a global suspend before due to I need to notify PHY when the suspend has finished (portsc.suspendM is set) and the resume signal has finished (portsc.fpr is cleared) for high speed device, but there are two places will send suspend/resume, and I don't want to patch ehci-hub.c (if you think patch ehci-hub.c is a good way, I can do it). The related host patches: usb: chipidea: host: add quirk for ehci operation usb: chipidea: host: add ehci quirk for imx controller My github tree: https://github.com/hzpeterchen/linux-usb branch: master It is based on linux-next-1029. Changes for v3: - Using flag bit to indicate SoC features/bugs [7/10][10/10] Changes for v2: - Do not use atomic_read and atomic_set for ci->in_lpm - Do not use "supports_runtime_pm" as DT property due to it is not a hardware feature, instead of it, we use compatible string to enable it. Peter Chen (10): usb: chipidea: Add power management support usb: chipidea: imx: add power management support usb: chipidea: add wakeup interrupt handler usb: chipidea: usbmisc_imx: remove the controller's clock information usb: chipidea: usbmisc_imx: add set_wakup API usb: chipidea: imx: call set_wakeup when necessary usb: chipidea: imx: Enable runtime pm support for imx6q usb: chipidea: host: add quirk for ehci operation usb: chipidea: host: add ehci quirk for imx controller usb: chipidea: imx: Enable CI_HDRC_IMX_EHCI_QUIRK drivers/usb/chipidea/ci.h | 3 + drivers/usb/chipidea/ci_hdrc_imx.c | 156 ++++++++++++++++++++++++++++++- drivers/usb/chipidea/ci_hdrc_imx.h | 1 + drivers/usb/chipidea/core.c | 139 +++++++++++++++++++++++++++ drivers/usb/chipidea/host.c | 180 ++++++++++++++++++++++++++++++++++++ drivers/usb/chipidea/otg.c | 5 + drivers/usb/chipidea/usbmisc_imx.c | 59 ++++++++---- include/linux/usb/chipidea.h | 2 + 8 files changed, 522 insertions(+), 23 deletions(-) [1] http://marc.info/?l=linux-usb&m=138361739523355&w=2 -- 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
