Hi Doug,
On 10/07/13 00:19, Doug Anderson wrote:
> On some devices (like exynos5420) the dw_mmc controller may be in a
> strange state after we wake up from sleep. Add callbacks to allow for
> dealing with these quirks. We use the "_noirq" versions of the
> callbacks since in the case of exynos5420 the strange state caused
> interrupts to fire so we need to deal with it while interrupts are
> still off.
>
> At the moment this support is only added to dw_mmc-pltfm which calls
> straight to the callback, since nobody but exynos needs it. We can
> add some levels of indirection (a call into the generic dw_mmc code)
> when someone finds a need.
>
> Signed-off-by: Doug Anderson <dianders@xxxxxxxxxxxx>
Reviewed-by: James Hogan <james.hogan@xxxxxxxxxx>
<snip>
>
> -SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume);
> +const struct dev_pm_ops dw_mci_pltfm_pmops = {
> + SET_SYSTEM_SLEEP_PM_OPS(dw_mci_pltfm_suspend, dw_mci_pltfm_resume)
> + .suspend_noirq = dw_mci_pltfm_suspend_noirq,
> + .resume_noirq = dw_mci_pltfm_resume_noirq,
> +};
Does Exynos support hibernation? I see that SET_SYSTEM_SLEEP_PM_OPS sets
freeze, thaw, poweroff, and restore callbacks too. You may not need the
hibernation specific _noirq callbacks though in which case it's probably
fine as it is.
Cheers
James
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