On 17 April 2013 13:49, 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 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 | 53 ++++++++++++++++++++++++++++++++++++++++++-- > drivers/mmc/core/sd.c | 46 ++++++++++++++++++++++++++++++++++++-- > drivers/mmc/core/sdio.c | 16 +++++++++++++ > include/linux/mmc/core.h | 3 +++ > include/linux/mmc/host.h | 2 +- > 10 files changed, 185 insertions(+), 39 deletions(-) > > -- > 1.7.10 > Adrian and Maya, do you think patchset is acceptable from your point? Can we advise Chris to merge it for 3.10 or do we need another round? :-) 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
