[PATCH 17/21] drm/omap: only ignore DIGIT SYNC LOST for TV output

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



We need to ignore DIGIT SYNC LOST error when enabling/disabling TV
output. The code does that, but it ignores the DIGI SYNC LOST when
enabling any output. Normally this does no harm, but it could make us
miss DIGIT SYNC LOST on some rare occasions.

Fix the code to only ignore DIGIT SYNC LOST when enabling/disabling TV.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
 drivers/gpu/drm/omapdrm/omap_crtc.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c
index 2175b9b7c725..4b06c039e9af 100644
--- a/drivers/gpu/drm/omapdrm/omap_crtc.c
+++ b/drivers/gpu/drm/omapdrm/omap_crtc.c
@@ -557,11 +557,13 @@ static void set_enabled(struct drm_crtc *crtc, bool enable)
 	if (dispc_mgr_is_enabled(channel) == enable)
 		return;
 
-	/*
-	 * Digit output produces some sync lost interrupts during the first
-	 * frame when enabling, so we need to ignore those.
-	 */
-	omap_crtc->ignore_digit_sync_lost = true;
+	if (omap_crtc->channel == OMAP_DSS_CHANNEL_DIGIT) {
+		/*
+		 * Digit output produces some sync lost interrupts during the
+		 * first frame when enabling, so we need to ignore those.
+		 */
+		omap_crtc->ignore_digit_sync_lost = true;
+	}
 
 	framedone_irq = dispc_mgr_get_framedone_irq(channel);
 	vsync_irq = dispc_mgr_get_vsync_irq(channel);
@@ -592,9 +594,11 @@ static void set_enabled(struct drm_crtc *crtc, bool enable)
 				omap_crtc->name, enable ? "enable" : "disable");
 	}
 
-	omap_crtc->ignore_digit_sync_lost = false;
-	/* make sure the irq handler sees the value above */
-	mb();
+	if (omap_crtc->channel == OMAP_DSS_CHANNEL_DIGIT) {
+		omap_crtc->ignore_digit_sync_lost = false;
+		/* make sure the irq handler sees the value above */
+		mb();
+	}
 }
 
 static void omap_crtc_pre_apply(struct omap_drm_apply *apply)
-- 
2.3.0

--
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




[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux