diff mbox series

[v2,2/2] drm/bridge: Add pixel clock check in atomic_check

Message ID 20240524073305.107293-3-j-choudhary@ti.com (mailing list archive)
State New, archived
Headers show
Series Add mode_valid hook for sii902x bridge | expand

Commit Message

Jayesh Choudhary May 24, 2024, 7:33 a.m. UTC 
Check the pixel clock for the mode in atomic_check and ensure that
it is within the range supported by the bridge.

Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com>
---
 drivers/gpu/drm/bridge/sii902x.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/bridge/sii902x.c b/drivers/gpu/drm/bridge/sii902x.c
index ef7c3ab3386c..a5b7ee1e3bbe 100644
--- a/drivers/gpu/drm/bridge/sii902x.c
+++ b/drivers/gpu/drm/bridge/sii902x.c
@@ -517,11 +517,16 @@  static int sii902x_bridge_atomic_check(struct drm_bridge *bridge,
 				       struct drm_crtc_state *crtc_state,
 				       struct drm_connector_state *conn_state)
 {
+	if (crtc_state->mode.clock < SII902X_MIN_PIXEL_CLOCK_KHZ)
+		return MODE_CLOCK_LOW;
+
+	if (crtc_state->mode.clock > SII902X_MAX_PIXEL_CLOCK_KHZ)
+		return MODE_CLOCK_HIGH;
+
 	/*
 	 * There might be flags negotiation supported in future but
 	 * set the bus flags in atomic_check statically for now.
 	 */
-
 	bridge_state->input_bus_cfg.flags = bridge->timings->input_bus_flags;
 
 	return 0;