On Tue, Dec 03, 2013 at 07:44:52PM +0800, Shawn Guo wrote: > On Mon, Dec 02, 2013 at 04:39:26PM +0100, Marek Vasut wrote: > > Add DRM flags for the LCD display clock polarity so the pixelclk-active DT > > property can be properly handled by drivers using the DRM API. > > > > Signed-off-by: Marek Vasut <ma...@denx.de> > > Cc: Dave Airlie <airl...@gmail.com> > > Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> > > Cc: Philipp Zabel <p.za...@pengutronix.de> > > Cc: Sascha Hauer <s.ha...@pengutronix.de> > > Cc: Shawn Guo <shawn....@linaro.org> > > --- > > drivers/gpu/drm/drm_modes.c | 5 +++++ > > include/uapi/drm/drm_mode.h | 3 +++ > > 2 files changed, 8 insertions(+) > > > > diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c > > index 85071a1..d1f3bfc 100644 > > --- a/drivers/gpu/drm/drm_modes.c > > +++ b/drivers/gpu/drm/drm_modes.c > > @@ -537,6 +537,11 @@ int drm_display_mode_from_videomode(const struct > > videomode *vm, > > dmode->flags |= DRM_MODE_FLAG_DBLSCAN; > > if (vm->flags & DISPLAY_FLAGS_DOUBLECLK) > > dmode->flags |= DRM_MODE_FLAG_DBLCLK; > > + if (vm->flags & DISPLAY_FLAGS_PIXDATA_POSEDGE) > > + dmode->flags |= DRM_MODE_FLAG_PIXELCLK_PPOL; > > + else if (vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE) > > + dmode->flags |= DRM_MODE_FLAG_PIXELCLK_NPOL; > > + > > drm_mode_set_name(dmode); > > > > return 0; > > diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h > > index f104c26..a6169ca 100644 > > --- a/include/uapi/drm/drm_mode.h > > +++ b/include/uapi/drm/drm_mode.h > > @@ -73,6 +73,9 @@ > > #define DRM_MODE_FLAG_3D_TOP_AND_BOTTOM (7<<14) > > #define DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF (8<<14) > > > > +/* CRTC LCD clock polarity flags. */ > > +#define DRM_MODE_FLAG_PIXELCLK_PPOL (1<<19) > > +#define DRM_MODE_FLAG_PIXELCLK_NPOL (1<<20) > > Marek, > > It looks that Denis (copied) is working on the same problem, so you may > want to be aware of his effort [1][2].
Indeed, and I made very similar comments in that thread. _______________________________________________ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
