From 98cd5796b37074fb6542b1c4042c2fd3862a6f77 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Wed, 4 Nov 2015 17:10:54 +0200 Subject: [PATCH] OMAPDSS: add setup for WB capture mode in dispc_wb_setup() 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 --- 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; }