> -----Original Message----- > From: Adrian Hunter [mailto:[email protected]] > Sent: Tuesday, July 20, 2010 12:39 PM > To: Ghorai, Sukumar > Cc: [email protected]; [email protected]; Shilimkar, > Santosh; Chikkature Rajashekar, Madhusudhan; Andrew Morton > Subject: Re: [PATCH] omap: hsmmc funtionality breaks when CONFIG_PM not > define > > Sukumar Ghorai wrote: > > Issue if power_saving option passed from board file and CONFIG_PM > not define. > > This is because hosts refer to wrong operation table and that try to > power save. > > power_saving is not related to power management. It should work with or > without > CONFIG_PM. What problem are you seeing? [Ghorai] when CONFIG_PM is not defined but power_saving flag is TRUE, then host operation table point to table which handles in state machine as: ENABLE -> CARDSLEEP -> REGSLEEP -> DISABLED for power/clock cut. And do the reverse for the enable clock/power. And power saving is not required and wont work when CONFIG_PM is not enabled.
So if CONFIG_PM is not enable, then it should do simple clock disable/enable, and not via the power state machine. > > > > > Signed-off-by: Sukumar Ghorai <[email protected]> > > Signed-off-by: Santosh Shilimkar <[email protected]> > > CC: Madhusudhan Chikkature <[email protected]> > > CC: Andrew Morton <[email protected]> > > --- > > Tested on omap3, omap4430 ES2.0 > > > > drivers/mmc/host/omap_hsmmc.c | 2 ++ > > 1 files changed, 2 insertions(+), 0 deletions(-) > > > > diff --git a/drivers/mmc/host/omap_hsmmc.c > b/drivers/mmc/host/omap_hsmmc.c > > index b032828..f84eed0 100644 > > --- a/drivers/mmc/host/omap_hsmmc.c > > +++ b/drivers/mmc/host/omap_hsmmc.c > > @@ -2015,9 +2015,11 @@ static int __init omap_hsmmc_probe(struct > platform_device *pdev) > > platform_set_drvdata(pdev, host); > > INIT_WORK(&host->mmc_carddetect_work, omap_hsmmc_detect); > > > > +#ifdef CONFIG_PM > > if (mmc_slot(host).power_saving) > > mmc->ops = &omap_hsmmc_ps_ops; > > else > > +#endif > > mmc->ops = &omap_hsmmc_ops; > > > > /* > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > > the body of a message to [email protected] > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Regards, Ghorai -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
