linux-kernel - [PATCH 0/5 v13] omap: usb: host: Runtime PM preparation for EHCI and OHCI drivers

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Date:	Thu, 6 Oct 2011 17:07:25 +0530
From:	Keshava Munegowda <keshava_mgowda@...com>
To:	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <balbi@...com>, <khilman@...com>,
	<b-cousson@...com>, <paul@...an.com>
CC:	Keshava Munegowda <keshava_mgowda@...com>, <gadiyar@...com>,
	<sameo@...ux.intel.com>, <parthab@...ia.ti.com>,
	<tony@...mide.com>, <johnstul@...ibm.com>, <vishwanath.bs@...com>,
	Keshava Munegowda <Keshava_mgowda@...com>
Subject: [PATCH 0/5 v13] omap: usb: host: Runtime PM preparation for EHCI and OHCI drivers

From: Keshava Munegowda <Keshava_mgowda@...com>

The Hwmod structures for ehci and ohci drivers are implemented for
EHCI and OHCI drivers of OMAP3 and OMAP4.
The ehci and ohci drivers does not use the APIs of the usbhs
core driver; the runtime pm APIs are used for clock
enable/disable. 

TODO:
  - Adding mux-information to Hwmods.
  - Aggressive Clock Management around USB bus suspend/resume.
  - Remote Wakeup support implementation using IO-ring Wakeup
    on EHCI/OHCI pads via PRCM IRQ chain handler.

In version 13:
	- for omap3, the ehci 120mhz clock is conditional enabled
	  if ehci is selected for atleast one port in the omap platform.
	- the hardware erratas information is added.
	- the patches are split in to two series
		i) The hwmod and preparation for run time pm of ehci and
			ohci drivers ( this series)
		ii) The Runtime pm support for ehci and ohci drivers.
	  Since the patches are split , both the series are SHOULD be 
	  applied to make the ehci and ohci drivers are functional with
	  runtime pm support.
	
In version 12:
  - The ehci, ohci and usb_host_hs hwmods combined as a single hwmod
    usb_host_hs.
  - for omap3
	the usbhost_ick and and usbtll_ick clocks are changed as interface
        clocks. The usbtll_fck, usbhost_48m_fck clocks are changed as main
        clocks and the 120mhz functional clock is changed to optional clock 
  - the usbhs mfd driver enable/disable this optional clock in 
    runtime_resume and runtime_suspend callbacks of pm_runtime_get_sync
    and pm_runtime_put_sync APIs.


Benoit Cousson (1):
  arm: omap: usb: ehci and ohci hwmod structures for omap4

Keshava Munegowda (4):
  arm: omap: usb: ehci and ohci hwmod structures for omap3
  arm: omap: usb: register hwmods of usbhs
  arm: omap: usb: device name change for the clk names of usbhs
  omap: usb: host: Replace usbhs core driver APIs by Runtime pm APIs

 arch/arm/mach-omap2/clock3xxx_data.c       |   26 ++--
 arch/arm/mach-omap2/clock44xx_data.c       |   10 +-
 arch/arm/mach-omap2/omap_hwmod_3xxx_data.c |  227 ++++++++++++++++++++++++++++
 arch/arm/mach-omap2/omap_hwmod_44xx_data.c |  206 +++++++++++++++++++++++++-
 arch/arm/mach-omap2/usb-host.c             |  100 ++++--------
 arch/arm/plat-omap/include/plat/usb.h      |    3 -
 drivers/mfd/omap-usb-host.c                |    2 +-
 drivers/usb/host/ehci-omap.c               |   17 +--
 drivers/usb/host/ohci-omap3.c              |   18 +--
 9 files changed, 498 insertions(+), 111 deletions(-)

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