[PATCH v3 00/11] usb: dwc3/xhci/phy: Enable runtime power management

[Vivek Gautam]

This patch-series enables runtime power management on xhci-plat,
dwc3-core, dwc3-exynos as well as on Samsung's USB 2.0 type and
USB 3.0 type PHYs.

Based on 'next' branch of Felipe Balbi's USB tree.

Changes from v2:
 - Using separate functions for USB PHY runtime power management, instead of
   using macros.
 - Adding 'pm_runtime_set_suspended()' api call in dwc3 core layer before
   enabling runtime pm. (Ideally, we should be explicitly make device
   'suspended' or 'active' before enabling runtime pm on it).
 - Checking return code for 'put_sync' and 'get_sync' of USB-PHYs when
   waking up or suspending them from dwc3 core's runtime_pm callbacks.
 - Removed buggy pm_runtime_put() calls from driver's (xhci, dwc3 and PHY)
   remove functions.
 - Adding a patch to enable runtime power management of Samsung's USB 2.0 PHY
   (usb: phy: samsung: Enable runtime power management on usb2phy)

Changes from v1:
 - Adding required PHY APIs to handle runtime power management
   instead of directly twiddling with phy->dev.
 - Handling runtime power management of usb PHYs in dwc3 core
   driver instead of in any glue layer.
 - Splitting the patch:
   [PATCH 4/4] usb: phy: samsung: Enable runtime power management on samsung-usb
   into required number to bifurcate functionality.

Vivek Gautam (11):
  usb: phy: Add APIs for runtime power management
  USB: dwc3: Adjust runtime pm to allow autosuspend
  usb: dwc3: Enable runtime pm only after PHYs are initialized
  usb: dwc3: Add runtime power management callbacks
  usb: dwc3: exynos: Enable runtime power management
  usb: xhci: Enable runtime pm in xhci-plat
  usb: phy: samsung: Enable runtime power management on usb2phy
  usb: phy: samsung: Enable runtime power management on usb3phy
  usb: phy: samsung: Add support for external reference clock
  usb: phy: samsung: Add support for PHY ref_clk gpio
  usb: phy: samsung: Add support for PHY refclk switching

 drivers/usb/dwc3/core.c            |   59 ++++++++++++++--
 drivers/usb/dwc3/dwc3-exynos.c     |   12 +++
 drivers/usb/host/xhci-plat.c       |    6 ++
 drivers/usb/phy/phy-samsung-usb.c  |   26 +++++++
 drivers/usb/phy/phy-samsung-usb.h  |    1 +
 drivers/usb/phy/phy-samsung-usb2.c |    5 ++
 drivers/usb/phy/phy-samsung-usb3.c |  119 +++++++++++++++++++++++++++++--
 include/linux/usb/phy.h            |  141 ++++++++++++++++++++++++++++++++++++
 8 files changed, 358 insertions(+), 11 deletions(-)

-- 
1.7.6.5

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