On Friday 05 April 2013, Tomasz Figa wrote: > On Friday 05 of April 2013 18:39:58 Samuel Ortiz wrote: > > Hi Tomasz, > > > > On Thu, Apr 04, 2013 at 06:37:01PM +0200, Tomasz Figa wrote: > > > This patch adds master driver for PWM/timer block available on many > > > Samsung SoCs providing clocksource and PWM output capabilities. > > > Why is that an MFD driver, and why aren't you using the PWM APIs for it ? > > Also, you probably want to look at using the regmap APIs for your IO. > > The case of Samsung PWM timers is rather complicated. It is a hardware block > that can be used at the same time to generate PWM signal and as a system > clocksource. > > There was a discussion on how to solve the problem of sharing the hardware: > http://thread.gmane.org/gmane.linux.kernel.samsung-soc/16480/focus=16500 > (see the linked post and replies to it). > I don't think anyone ever suggested using a private API though. I think it's ok if the driver lives in drivers/mfd when it doesn't fit anywhere else easily, but you should really register it to the pwm subsystem to expose that functionality, not export functions that can be used by a pwm shim driver, which even seems to be missing from the series. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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