On Fri, Jul 27, 2012 at 09:05:48PM +0900, Alexandre Courbot wrote: > Some device drivers (panel backlights especially) need to follow precise > sequences for powering on and off, involving gpios, regulators, PWMs > with a precise powering order and delays to respect between each steps. > These sequences are board-specific, and do not belong to a particular > driver - therefore they have been performed by board-specific hook > functions to far. > > With the advent of the device tree and of ARM kernels that are not > board-tied, we cannot rely on these board-specific hooks anymore but > need a way to implement these sequences in a portable manner. This patch > introduces a simple interpreter that can execute such power sequences > encoded either as platform data or within the device tree. > > Signed-off-by: Alexandre Courbot <acourbot@xxxxxxxxxx> > --- > Documentation/power/power_seq.txt | 120 +++++++++++++++ > drivers/base/Kconfig | 4 + > drivers/base/Makefile | 1 + > drivers/base/power_seq.c | 300 ++++++++++++++++++++++++++++++++++++++ > include/linux/power_seq.h | 139 ++++++++++++++++++ What's wrong with drivers/power/? I sure don't want to maintain this code, and it seems to not be part of the "driver core" infrastructure. thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
