On 11/9/2011 4:09 PM, Linus WALLEIJ wrote: > From: Virupax Sadashivpetimath <virupax.sadashivpetim...@stericsson.com> > > Make sure we clear the enable bit when the block is not used. > This will save some energy in certain hardware versions. > > Signed-off-by: Virupax Sadashivpetimath > <virupax.sadashivpetim...@stericsson.com> > Signed-off-by: Linus Walleij <linus.wall...@linaro.org> > --- > drivers/spi/spi-pl022.c | 5 +++++ > 1 files changed, 5 insertions(+), 0 deletions(-) > > diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c > index 305f2ba..fa3eaae 100644 > --- a/drivers/spi/spi-pl022.c > +++ b/drivers/spi/spi-pl022.c > @@ -512,6 +512,11 @@ static void giveback(struct pl022 *pl022) > msg->state = NULL; > if (msg->complete) > msg->complete(msg->context); > + > + /* disable the SPI/SSP operation */ > + writew((readw(SSP_CR1(pl022->virtbase)) & > + (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase)); > + > /* This message is completed, so let's turn off the clocks & power */ > pm_runtime_put(&pl022->adev->dev); > }
Reviewed-by: Viresh Kumar <viresh.ku...@st.com> -- viresh ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
