dispc_wb_setup() handles configuration only for mem-to-mem case. This
patch adds the necessary configuration to handle also display capture
mode.
We need to set CAPTUREMODE to 0 (continuous capture), and WBDELAYCOUNT
according to the vertical timings of the display, so that the WB FIFO
has time to flush before the next frame starts.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
---
drivers/video/fbdev/omap2/dss/dispc.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/video/fbdev/omap2/dss/dispc.c b/drivers/video/fbdev/omap2/dss/dispc.c
index 6018518c1b25..c3ba555737b8 100644
--- a/drivers/video/fbdev/omap2/dss/dispc.c
+++ b/drivers/video/fbdev/omap2/dss/dispc.c
@@ -2859,8 +2859,23 @@ int dispc_wb_setup(const struct omap_dss_writeback_info *wi,
l = FLD_MOD(l, mem_to_mem, 19, 19); /* WRITEBACKMODE */
if (mem_to_mem)
l = FLD_MOD(l, 1, 26, 24); /* CAPTUREMODE */
+ else
+ l = FLD_MOD(l, 0, 26, 24); /* CAPTUREMODE */
dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
+ if (mem_to_mem) {
+ /* WBDELAYCOUNT */
+ REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 7, 0);
+ } else {
+ int wbdelay;
+
+ wbdelay = min(mgr_timings->vfp + mgr_timings->vsw +
+ mgr_timings->vbp, 255);
+
+ /* WBDELAYCOUNT */
+ REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), wbdelay, 7, 0);
+ }
+
return r;
}
--
2.5.0
--
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