[PATCH v5 4/4] gpio: mvebu: improve handling of pwm zero on/off values

[Uwe Kleine-König]

On Wed, Jan 20, 2021 at 06:16:28PM +0200, Baruch Siach wrote:
> Hardware appears to treat zero value as 2^32. Take advantage of this
> fact to support on/off values of up to UINT_MAX+1 == 2^32. Adjust both
> .apply and .get_state to handle zero as a special case.
> 
> Rounded up division result in .get_state can't be zero, since the
> dividend is now larger than 0. Remove check for this case.
> 
> Reported-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>
> Analyzed-by: Russell King <linux at armlinux.org.uk>
> Signed-off-by: Baruch Siach <baruch at tkos.co.il>

Reviewed-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>

Thanks
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |
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