Hi Steffen, On 2013-01-25 11:01, Steffen Trumtrar wrote: > +/* VESA display monitor timing parameters */ > +#define VESA_DMT_HSYNC_LOW BIT(0) > +#define VESA_DMT_HSYNC_HIGH BIT(1) > +#define VESA_DMT_VSYNC_LOW BIT(2) > +#define VESA_DMT_VSYNC_HIGH BIT(3) > + > +/* display specific flags */ > +#define DISPLAY_FLAGS_DE_LOW BIT(0) /* data enable flag */ > +#define DISPLAY_FLAGS_DE_HIGH BIT(1) > +#define DISPLAY_FLAGS_PIXDATA_POSEDGE BIT(2) /* drive data on pos. edge */ > +#define DISPLAY_FLAGS_PIXDATA_NEGEDGE BIT(3) /* drive data on neg. edge */ > +#define DISPLAY_FLAGS_INTERLACED BIT(4) > +#define DISPLAY_FLAGS_DOUBLESCAN BIT(5) <snip> > + unsigned int dmt_flags; /* VESA DMT flags */ > + unsigned int data_flags; /* video data flags */ Why did you go for this approach? To be able to represent true/false/not-specified? Would it be simpler to just have "flags" field? What does it give us to have those two separately? Should the above say raising edge/falling edge instead of positive edge/negative edge? Tomi _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel