The TRM and the OMAP FB driver have different ideas about the widths
of various bit fields in the DISPC_TIMING_{H,V} registers. This patch
is based on what the TRM (TI document SPRUF98G) says.
Note: this patch changes the meanings of the vertical timing values
by one scan line. It still works with my display, but it might break
things for other people.
---
diff --git a/drivers/video/omap/dispc.c b/drivers/video/omap/dispc.c
index c7c6455..e58574b 100644
--- a/drivers/video/omap/dispc.c
+++ b/drivers/video/omap/dispc.c
@@ -795,17 +795,17 @@ static void set_lcd_timings(void)
unsigned long fck;
l = dispc_read_reg(DISPC_TIMING_H);
- l &= ~(FLD_MASK(0, 6) | FLD_MASK(8, 8) | FLD_MASK(20, 8));
- l |= ( max(1, (min(64, panel->hsw))) - 1 ) << 0;
- l |= ( max(1, (min(256, panel->hfp))) - 1 ) << 8;
- l |= ( max(1, (min(256, panel->hbp))) - 1 ) << 20;
+ l &= ~(FLD_MASK(0, 8) | FLD_MASK(8, 12) | FLD_MASK(20, 12));
+ l |= ( max(1, (min(256, panel->hsw))) - 1 ) << 0;
+ l |= ( max(1, (min(4096, panel->hfp))) - 1 ) << 8;
+ l |= ( max(1, (min(4096, panel->hbp))) - 1 ) << 20;
dispc_write_reg(DISPC_TIMING_H, l);
l = dispc_read_reg(DISPC_TIMING_V);
- l &= ~(FLD_MASK(0, 6) | FLD_MASK(8, 8) | FLD_MASK(20, 8));
- l |= ( max(1, (min(64, panel->vsw))) - 1 ) << 0;
- l |= ( max(0, (min(255, panel->vfp))) - 0 ) << 8;
- l |= ( max(0, (min(255, panel->vbp))) - 0 ) << 20;
+ l &= ~(FLD_MASK(0, 8) | FLD_MASK(8, 12) | FLD_MASK(20, 12));
+ l |= ( max(1, (min(256, panel->vsw))) - 1 ) << 0;
+ l |= ( max(1, (min(4096, panel->vfp))) - 1 ) << 8;
+ l |= ( max(1, (min(4096, panel->vbp))) - 1 ) << 20;
dispc_write_reg(DISPC_TIMING_V, l);
l = dispc_read_reg(DISPC_POL_FREQ);
--
To unsubscribe from this list: send the line "unsubscribe linux-omap" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
