From: Virupax Sadashivpetimath <[email protected]>
Make sure we clear the enable bit when the block is not used. This will save some energy in certain hardware versions. Reviewed-by: Viresh Kumar <[email protected]> Signed-off-by: Virupax Sadashivpetimath <[email protected]> Signed-off-by: Linus Walleij <[email protected]> --- ChangeLog v1->v2: - Move this patch after the movement of disabling code to workqueue at Viresh:s request. - Add Vireshs Reviewed-by --- drivers/spi/spi-pl022.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 8cdf052..82a929f 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -1513,6 +1513,9 @@ static void pump_messages(struct work_struct *work) spin_lock_irqsave(&pl022->queue_lock, flags); if (list_empty(&pl022->queue) || !pl022->running) { if (pl022->busy) { + /* nothing more to do - disable spi/ssp and power off */ + writew((readw(SSP_CR1(pl022->virtbase)) & + (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase)); pm_runtime_put(&pl022->adev->dev); } pl022->busy = false; -- 1.7.3.2 ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-novd2d _______________________________________________ spi-devel-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/spi-devel-general
