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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 <tomi.valkeinen@ti.com>
hifive-unleashed-5.1
Tomi Valkeinen 2015-11-04 17:10:54 +02:00
parent 4c055ce03b
commit 98cd5796b3
1 changed files with 15 additions and 0 deletions
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15
drivers/video/fbdev/omap2/dss/dispc.c
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@ -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;
}