diff options
| -rw-r--r-- | drivers/video/omap2/dss/manager.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c index 0820986d4a68..32ec2ff2e9cf 100644 --- a/drivers/video/omap2/dss/manager.c +++ b/drivers/video/omap2/dss/manager.c @@ -940,6 +940,22 @@ static int configure_dispc(void) return r; } +/* Make the coordinates even. There are some strange problems with OMAP and + * partial DSI update when the update widths are odd. */ +static void make_even(u16 *x, u16 *w) +{ + u16 x1, x2; + + x1 = *x; + x2 = *x + *w; + + x1 &= ~1; + x2 = ALIGN(x2, 2); + + *x = x1; + *w = x2 - x1; +} + /* Configure dispc for partial update. Return possibly modified update * area */ void dss_setup_partial_planes(struct omap_dss_device *dssdev, @@ -968,6 +984,8 @@ void dss_setup_partial_planes(struct omap_dss_device *dssdev, return; } + make_even(&x, &w); + spin_lock_irqsave(&dss_cache.lock, flags); /* We need to show the whole overlay if it is scaled. So look for @@ -1029,6 +1047,8 @@ void dss_setup_partial_planes(struct omap_dss_device *dssdev, w = x2 - x1; h = y2 - y1; + make_even(&x, &w); + DSSDBG("changing upd area due to ovl(%d) scaling %d,%d %dx%d\n", i, x, y, w, h); } |