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authorVille Syrjälä <ville.syrjala@nokia.com>2010-03-05 01:13:11 +0200
committerTomi Valkeinen <tomi.valkeinen@nokia.com>2010-08-03 15:18:45 +0300
commit75c7d59daf502a4eb040e181120fb83b4a8c0719 (patch)
treeb60717bd00b95a8ac2cad41866cea2f0be47d8d9 /drivers/video
parenta74b260502c0911d14bafb76a20f699b6caa2e91 (diff)
OMAP: DSS2: clear spurious SYNC_LOST_DIGIT interrupts
When DSS transitions from off mode to on VENC may generate a spurious SYNC_LOST_DIGIT error. Just ack it when restoring the context. Also restore IRQENABLE last to avoid triggering interrupts before the context is fully restored. Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/omap2/dss/dispc.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index e777e352dbcd..b8c16034f1ea 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -335,7 +335,7 @@ void dispc_save_context(void)
void dispc_restore_context(void)
{
RR(SYSCONFIG);
- RR(IRQENABLE);
+ /*RR(IRQENABLE);*/
/*RR(CONTROL);*/
RR(CONFIG);
RR(DEFAULT_COLOR0);
@@ -472,6 +472,15 @@ void dispc_restore_context(void)
/* enable last, because LCD & DIGIT enable are here */
RR(CONTROL);
+
+ /* clear spurious SYNC_LOST_DIGIT interrupts */
+ dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
+
+ /*
+ * enable last so IRQs won't trigger before
+ * the context is fully restored
+ */
+ RR(IRQENABLE);
}
#undef SR

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