[PATCHv2 27/31] drm/omap: verify that display x-res is divisible by 8

[Tomi Valkeinen]

DISPC requires the x resolution to be divisible by 8 when stall mode is
not used.

Add a check to the DPI driver to verify this.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
---
 drivers/gpu/drm/omapdrm/dss/dpi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c
index 7953e6a52346..557cf3bdcc4e 100644
--- a/drivers/gpu/drm/omapdrm/dss/dpi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dpi.c
@@ -513,6 +513,9 @@ static int dpi_check_timings(struct omap_dss_device *dssdev,
 	struct dpi_clk_calc_ctx ctx;
 	bool ok;
 
+	if (timings->x_res % 8 != 0)
+		return -EINVAL;
+
 	if (mgr && !dispc_mgr_timings_ok(mgr->id, timings))
 		return -EINVAL;
 
-- 
2.5.0