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[04/11] drm/sti: adjust delay for DVO

Message ID 1455267955-32657-5-git-send-email-vincent.abriou@st.com (mailing list archive)
State New, archived
Headers show

Commit Message

Vincent Abriou Feb. 12, 2016, 9:05 a.m. UTC 
From: Bich Hemon <bich.hemon@st.com>

Modify delay to display last pixel column on DVO

Signed-off-by: Bich Hemon <bich.hemon@st.com>
---
 drivers/gpu/drm/sti/sti_vtg.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/sti/sti_vtg.c b/drivers/gpu/drm/sti/sti_vtg.c
index 313d703..32c7986 100644
--- a/drivers/gpu/drm/sti/sti_vtg.c
+++ b/drivers/gpu/drm/sti/sti_vtg.c
@@ -64,6 +64,9 @@ 
 /* Delay introduced by the HDMI in nb of pixel */
 #define HDMI_DELAY          (5)
 
+/* Delay introduced by the DVO in nb of pixel */
+#define DVO_DELAY           (2)
+
 /* delay introduced by the Arbitrary Waveform Generator in nb of pixels */
 #define AWG_DELAY_HD        (-9)
 #define AWG_DELAY_ED        (-8)
@@ -278,7 +281,7 @@  static void vtg_set_mode(struct sti_vtg *vtg,
 	vtg_set_hsync_vsync_pos(&sync[VTG_SYNC_ID_HDF - 1], AWG_DELAY_HD, mode);
 
 	/* Set hsync and vsync position for DVO */
-	vtg_set_hsync_vsync_pos(&sync[VTG_SYNC_ID_DVO - 1], 0, mode);
+	vtg_set_hsync_vsync_pos(&sync[VTG_SYNC_ID_DVO - 1], DVO_DELAY, mode);
 
 	/* Progam the syncs outputs */
 	for (i = 0; i < VTG_MAX_SYNC_OUTPUT ; i++) {