On Thu, Jun 25, 2015 at 4:45 PM, Geert Uytterhoeven <[email protected]> wrote:
> Currently gpio modules are runtime-resumed at probe time. This means the > gpio module will be active all the time (except during system suspend, > if not configured as a wake-up source). > > While an R-Car Gen2 gpio module retains pins configured for output at > the requested level while put in standby mode, gpio registercannot be > accessed while suspended. Unfortunately pm_runtime_get_sync() cannot be > called from all contexts where gpio register access is needed. Hence > move the Runtime PM handling from probe/remove time to gpio request/free > time, which is probably the best we can do. > > On r8a7791/koelsch, gpio modules 0, 1, 3, and 4 are now suspended during > normal use (gpio2 is used for LEDs and regulators, gpio5 for keys, gpio6 > for SD-Card CD & WP, gpio7 for keys and regulators). > > Signed-off-by: Geert Uytterhoeven <[email protected]> Patch applied unless Magnus complains. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
