| Message ID | 1350910768-8522-1-git-send-email-balbi@ti.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Oct 22, 2012 at 03:59:28PM +0300, Felipe Balbi wrote: > prepare() is supposed to prevent new children from > being registered. On the MMC subsystem, children > (new cards) registration starts with the card > detect IRQ. > > Move card detect IRQ disabling to prepare() so that > no new cards will be registered while we're trying > to suspend. > > Likewise, move card detect IRQ enabling to complete() > so we only try to register new children after our MMC > IP is back up. > > Signed-off-by: Felipe Balbi <balbi@ti.com> > --- > > Venkat, do you think the patch below makes sense ? btw, just checked suspend to ram with beagle and panda. We still have our filesystem after waking up. ps: you will [1] to test it: [1] http://marc.info/?l=linux-arm-kernel&m=135090724817604&w=2 > diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c > index 54bfd0c..4c8b41e 100644 > --- a/drivers/mmc/host/omap_hsmmc.c > +++ b/drivers/mmc/host/omap_hsmmc.c > @@ -2022,6 +2022,26 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev) > } > > #ifdef CONFIG_PM > +static int omap_hsmmc_prepare(struct device *dev) > +{ > + struct omap_hsmmc_host *host = dev_get_drvdata(dev); > + > + if (host->pdata->suspend) > + return host->pdata->suspend(dev, host->slot_id); > + > + return 0; > +} > + > +static int omap_hsmmc_complete(struct device *dev) > +{ > + struct omap_hsmmc_host *host = dev_get_drvdata(dev); > + > + if (host->pdata->resume) > + return host->pdata->resume(dev, host->slot_id); > + > + return 0; > +} > + > static int omap_hsmmc_suspend(struct device *dev) > { > int ret = 0; > @@ -2035,23 +2055,10 @@ static int omap_hsmmc_suspend(struct device *dev) > > pm_runtime_get_sync(host->dev); > host->suspended = 1; > - if (host->pdata->suspend) { > - ret = host->pdata->suspend(dev, host->slot_id); > - if (ret) { > - dev_dbg(dev, "Unable to handle MMC board" > - " level suspend\n"); > - host->suspended = 0; > - return ret; > - } > - } > ret = mmc_suspend_host(host->mmc); > > if (ret) { > host->suspended = 0; > - if (host->pdata->resume) { > - if (host->pdata->resume(dev, host->slot_id)) > - dev_dbg(dev, "Unmask interrupt failed\n"); > - } > goto err; > } > > @@ -2088,12 +2095,6 @@ static int omap_hsmmc_resume(struct device *dev) > if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) > omap_hsmmc_conf_bus_power(host); > > - if (host->pdata->resume) { > - ret = host->pdata->resume(dev, host->slot_id); > - if (ret) > - dev_dbg(dev, "Unmask interrupt failed\n"); > - } > - > omap_hsmmc_protect_card(host); > > /* Notify the core to resume the host */ > @@ -2109,8 +2110,10 @@ static int omap_hsmmc_resume(struct device *dev) > } > > #else > +#define omap_hsmmc_prepare NULL > +#define omap_hsmmc_complete NULL > #define omap_hsmmc_suspend NULL > -#define omap_hsmmc_resume NULL > +#define omap_hsmmc_resume NULL > #endif > > static int omap_hsmmc_runtime_suspend(struct device *dev) > @@ -2138,6 +2141,8 @@ static int omap_hsmmc_runtime_resume(struct device *dev) > static struct dev_pm_ops omap_hsmmc_dev_pm_ops = { > .suspend = omap_hsmmc_suspend, > .resume = omap_hsmmc_resume, > + .prepare = omap_hsmmc_prepare, > + .complete = omap_hsmmc_complete, > .runtime_suspend = omap_hsmmc_runtime_suspend, > .runtime_resume = omap_hsmmc_runtime_resume, > }; > -- > 1.8.0.rc0 >
Hi, On Mon, Oct 22, 2012 at 04:27:08PM +0300, Felipe Balbi wrote: > On Mon, Oct 22, 2012 at 03:59:28PM +0300, Felipe Balbi wrote: > > prepare() is supposed to prevent new children from > > being registered. On the MMC subsystem, children > > (new cards) registration starts with the card > > detect IRQ. > > > > Move card detect IRQ disabling to prepare() so that > > no new cards will be registered while we're trying > > to suspend. > > > > Likewise, move card detect IRQ enabling to complete() > > so we only try to register new children after our MMC > > IP is back up. > > > > Signed-off-by: Felipe Balbi <balbi@ti.com> > > --- > > > > Venkat, do you think the patch below makes sense ? > > btw, just checked suspend to ram with beagle and panda. We still have > our filesystem after waking up. > > ps: you will [1] to test it: > > [1] http://marc.info/?l=linux-arm-kernel&m=135090724817604&w=2 ping > > > diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c > > index 54bfd0c..4c8b41e 100644 > > --- a/drivers/mmc/host/omap_hsmmc.c > > +++ b/drivers/mmc/host/omap_hsmmc.c > > @@ -2022,6 +2022,26 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev) > > } > > > > #ifdef CONFIG_PM > > +static int omap_hsmmc_prepare(struct device *dev) > > +{ > > + struct omap_hsmmc_host *host = dev_get_drvdata(dev); > > + > > + if (host->pdata->suspend) > > + return host->pdata->suspend(dev, host->slot_id); > > + > > + return 0; > > +} > > + > > +static int omap_hsmmc_complete(struct device *dev) > > +{ > > + struct omap_hsmmc_host *host = dev_get_drvdata(dev); > > + > > + if (host->pdata->resume) > > + return host->pdata->resume(dev, host->slot_id); > > + > > + return 0; > > +} > > + > > static int omap_hsmmc_suspend(struct device *dev) > > { > > int ret = 0; > > @@ -2035,23 +2055,10 @@ static int omap_hsmmc_suspend(struct device *dev) > > > > pm_runtime_get_sync(host->dev); > > host->suspended = 1; > > - if (host->pdata->suspend) { > > - ret = host->pdata->suspend(dev, host->slot_id); > > - if (ret) { > > - dev_dbg(dev, "Unable to handle MMC board" > > - " level suspend\n"); > > - host->suspended = 0; > > - return ret; > > - } > > - } > > ret = mmc_suspend_host(host->mmc); > > > > if (ret) { > > host->suspended = 0; > > - if (host->pdata->resume) { > > - if (host->pdata->resume(dev, host->slot_id)) > > - dev_dbg(dev, "Unmask interrupt failed\n"); > > - } > > goto err; > > } > > > > @@ -2088,12 +2095,6 @@ static int omap_hsmmc_resume(struct device *dev) > > if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) > > omap_hsmmc_conf_bus_power(host); > > > > - if (host->pdata->resume) { > > - ret = host->pdata->resume(dev, host->slot_id); > > - if (ret) > > - dev_dbg(dev, "Unmask interrupt failed\n"); > > - } > > - > > omap_hsmmc_protect_card(host); > > > > /* Notify the core to resume the host */ > > @@ -2109,8 +2110,10 @@ static int omap_hsmmc_resume(struct device *dev) > > } > > > > #else > > +#define omap_hsmmc_prepare NULL > > +#define omap_hsmmc_complete NULL > > #define omap_hsmmc_suspend NULL > > -#define omap_hsmmc_resume NULL > > +#define omap_hsmmc_resume NULL > > #endif > > > > static int omap_hsmmc_runtime_suspend(struct device *dev) > > @@ -2138,6 +2141,8 @@ static int omap_hsmmc_runtime_resume(struct device *dev) > > static struct dev_pm_ops omap_hsmmc_dev_pm_ops = { > > .suspend = omap_hsmmc_suspend, > > .resume = omap_hsmmc_resume, > > + .prepare = omap_hsmmc_prepare, > > + .complete = omap_hsmmc_complete, > > .runtime_suspend = omap_hsmmc_runtime_suspend, > > .runtime_resume = omap_hsmmc_runtime_resume, > > }; > > -- > > 1.8.0.rc0 > >
On Thursday 25 October 2012 11:34 PM, Felipe Balbi wrote: > Hi, > > On Mon, Oct 22, 2012 at 04:27:08PM +0300, Felipe Balbi wrote: >> On Mon, Oct 22, 2012 at 03:59:28PM +0300, Felipe Balbi wrote: >>> prepare() is supposed to prevent new children from >>> being registered. On the MMC subsystem, children >>> (new cards) registration starts with the card >>> detect IRQ. >>> >>> Move card detect IRQ disabling to prepare() so that >>> no new cards will be registered while we're trying >>> to suspend. >>> >>> Likewise, move card detect IRQ enabling to complete() >>> so we only try to register new children after our MMC >>> IP is back up. >>> >>> Signed-off-by: Felipe Balbi <balbi@ti.com> >>> --- >>> >>> Venkat, do you think the patch below makes sense ? >> btw, just checked suspend to ram with beagle and panda. We still have >> our filesystem after waking up. >> >> ps: you will [1] to test it: >> >> [1] http://marc.info/?l=linux-arm-kernel&m=135090724817604&w=2 > ping > I've been off for the past 3 days. Will test this on Monday once I'm back in office.
On Mon, Oct 22, 2012 at 6:29 PM, Felipe Balbi <balbi@ti.com> wrote: > prepare() is supposed to prevent new children from > being registered. On the MMC subsystem, children > (new cards) registration starts with the card > detect IRQ. > > Move card detect IRQ disabling to prepare() so that > no new cards will be registered while we're trying > to suspend. > > Likewise, move card detect IRQ enabling to complete() > so we only try to register new children after our MMC > IP is back up. > > Signed-off-by: Felipe Balbi <balbi@ti.com> > --- > > Venkat, do you think the patch below makes sense ? Except for the minor nit mentioned below, it works well. I'll include it in my patch series. > > cheers > > drivers/mmc/host/omap_hsmmc.c | 45 ++++++++++++++++++++++++------------------- > 1 file changed, 25 insertions(+), 20 deletions(-) > > diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c > index 54bfd0c..4c8b41e 100644 > --- a/drivers/mmc/host/omap_hsmmc.c > +++ b/drivers/mmc/host/omap_hsmmc.c > @@ -2022,6 +2022,26 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev) > } > > #ifdef CONFIG_PM > +static int omap_hsmmc_prepare(struct device *dev) > +{ > + struct omap_hsmmc_host *host = dev_get_drvdata(dev); > + > + if (host->pdata->suspend) > + return host->pdata->suspend(dev, host->slot_id); > + > + return 0; > +} > + > +static int omap_hsmmc_complete(struct device *dev) The .complete() function prototype requires to return void. This one emits a compilation warning.
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 54bfd0c..4c8b41e 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -2022,6 +2022,26 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev) } #ifdef CONFIG_PM +static int omap_hsmmc_prepare(struct device *dev) +{ + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + + if (host->pdata->suspend) + return host->pdata->suspend(dev, host->slot_id); + + return 0; +} + +static int omap_hsmmc_complete(struct device *dev) +{ + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + + if (host->pdata->resume) + return host->pdata->resume(dev, host->slot_id); + + return 0; +} + static int omap_hsmmc_suspend(struct device *dev) { int ret = 0; @@ -2035,23 +2055,10 @@ static int omap_hsmmc_suspend(struct device *dev) pm_runtime_get_sync(host->dev); host->suspended = 1; - if (host->pdata->suspend) { - ret = host->pdata->suspend(dev, host->slot_id); - if (ret) { - dev_dbg(dev, "Unable to handle MMC board" - " level suspend\n"); - host->suspended = 0; - return ret; - } - } ret = mmc_suspend_host(host->mmc); if (ret) { host->suspended = 0; - if (host->pdata->resume) { - if (host->pdata->resume(dev, host->slot_id)) - dev_dbg(dev, "Unmask interrupt failed\n"); - } goto err; } @@ -2088,12 +2095,6 @@ static int omap_hsmmc_resume(struct device *dev) if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) omap_hsmmc_conf_bus_power(host); - if (host->pdata->resume) { - ret = host->pdata->resume(dev, host->slot_id); - if (ret) - dev_dbg(dev, "Unmask interrupt failed\n"); - } - omap_hsmmc_protect_card(host); /* Notify the core to resume the host */ @@ -2109,8 +2110,10 @@ static int omap_hsmmc_resume(struct device *dev) } #else +#define omap_hsmmc_prepare NULL +#define omap_hsmmc_complete NULL #define omap_hsmmc_suspend NULL -#define omap_hsmmc_resume NULL +#define omap_hsmmc_resume NULL #endif static int omap_hsmmc_runtime_suspend(struct device *dev) @@ -2138,6 +2141,8 @@ static int omap_hsmmc_runtime_resume(struct device *dev) static struct dev_pm_ops omap_hsmmc_dev_pm_ops = { .suspend = omap_hsmmc_suspend, .resume = omap_hsmmc_resume, + .prepare = omap_hsmmc_prepare, + .complete = omap_hsmmc_complete, .runtime_suspend = omap_hsmmc_runtime_suspend, .runtime_resume = omap_hsmmc_runtime_resume, };
prepare() is supposed to prevent new children from being registered. On the MMC subsystem, children (new cards) registration starts with the card detect IRQ. Move card detect IRQ disabling to prepare() so that no new cards will be registered while we're trying to suspend. Likewise, move card detect IRQ enabling to complete() so we only try to register new children after our MMC IP is back up. Signed-off-by: Felipe Balbi <balbi@ti.com> --- Venkat, do you think the patch below makes sense ? cheers drivers/mmc/host/omap_hsmmc.c | 45 ++++++++++++++++++++++++------------------- 1 file changed, 25 insertions(+), 20 deletions(-)