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

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Date:	Thu, 4 Apr 2013 10:34:57 +0530
From:	Vivek Gautam <gautamvivek1987@...il.com>
To:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Cc:	Vivek Gautam <gautam.vivek@...sung.com>, linux-usb@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	balbi@...com, stern@...land.harvard.edu, rob.herring@...xeda.com,
	kgene.kim@...sung.com, kishon@...com, dianders@...omium.org,
	t.figa@...sung.com, p.paneri@...sung.com
Subject: Re: [PATCH v3 00/11] usb: dwc3/xhci/phy: Enable runtime power management

Hi Sarah,


On Wed, Apr 3, 2013 at 10:57 PM, Sarah Sharp
<sarah.a.sharp@...ux.intel.com> wrote:
> Question: Do you still need this patch for 3.10?

Felipe's 'next' is closed for 3.10, so this series won't be making it
to 3.10 now, as a whole. :-(

>
> http://marc.info/?l=linux-usb&m=136057666911621&w=2
>
> Does this patchset build on top of that?

Yea, it builds fine on top of the above mentioned patch.
I would suggest that we pull the xhci-plat patch in this series when the
complete patch-set getting in.
btw, its your decision ;-)

>
> I'm really behind on my patches for 3.10, sorry.
>
> Sarah Sharp
>
> On Mon, Apr 01, 2013 at 07:23:59PM +0530, Vivek Gautam wrote:
>> 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
>>



-- 
Thanks & Regards
Vivek
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