On 2 May 2013 14:02, Ulf Hansson <ulf.hansson@xxxxxxxxxxxxxx> wrote: > From: Ulf Hansson <ulf.hansson@xxxxxxxxxx> > > SDIO has been using runtime pm for a while to handle runtime power save > operations. This patchset is enabling the option to make the sd/mmc > blockdevices to use runtime pm as well. > > The runtime pm implementation for the block device will make use of > autosuspend to defer power save operation to after request inactivty for > a certain time. > > Corresponding pm_runtime_get|put calls has been added at those places that > do requires the card to be fully powered to communicate. > > Patch 4 can be considered as a proof of concept patch. It implements > aggressive power management for (e)MMC/SD. This feature has also been > discussed on the mmc mailing list previously. > > Next step would be to implement the IDLE BKOPS on top of the runtime pm > callbacks. > > Changes in v4: > - Updated patch 4 according to review comments from Adrian. > > Changes in v3: > - Make sure the card device is powered from a runtime perspective > when needed. This is also the indirect reason to why the new patch 1 > has been added to this patchset. > - Added a proof of concept patch, in patch 4. > - Replace acks with cc, since quite some changes has been done. > > Changes in v2: > - Removed the stated patch below from this patchset. It can be handled > separately. "mmc: core: Remove power_restore bus_ops for mmc and sd" > - Rebased patches on latest mmc-next. > - Added Acks. > > Ulf Hansson (4): > mmc: core: Stop bkops for eMMC only from mmc suspend > mmc: core: Add bus_ops for runtime pm callbacks > mmc: block: Enable runtime pm for mmc blkdevice > mmc: core: Support aggressive power management for (e)MMC/SD > > drivers/mmc/card/block.c | 32 ++++++++++++++++++----- > drivers/mmc/core/bus.c | 14 +++++++++-- > drivers/mmc/core/core.c | 47 ++++++++++++++++++---------------- > drivers/mmc/core/core.h | 3 +++ > drivers/mmc/core/debugfs.c | 8 +++--- > drivers/mmc/core/mmc.c | 60 ++++++++++++++++++++++++++++++++++++++++++-- > drivers/mmc/core/sd.c | 53 ++++++++++++++++++++++++++++++++++++-- > drivers/mmc/core/sdio.c | 16 ++++++++++++ > include/linux/mmc/core.h | 3 +++ > include/linux/mmc/host.h | 2 +- > 10 files changed, 199 insertions(+), 39 deletions(-) > > -- > 1.7.10 > Thanks for reviewing this patchset Adrian. I suppose we have sorted out all the issues now and I would like to advise Chris to merge it from 3.10, unless you have any other opinions. Not sure if it is still possible for Chris to merge it for 3.10, but let's see. Kind regards Ulf Hansson -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
