OMAPDSS: DISPC: move fifo threhold calc to dispc.c
Move fifo threshold calculation into dispc.c, as the thresholds are
really dispc internal thing.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index ba907bd..a759722 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -909,7 +909,7 @@
dispc_ovl_set_burst_size(i, burst_size);
}
-u32 dispc_ovl_get_burst_size(enum omap_plane plane)
+static u32 dispc_ovl_get_burst_size(enum omap_plane plane)
{
unsigned unit = dss_feat_get_burst_size_unit();
/* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
@@ -1018,7 +1018,7 @@
}
}
-u32 dispc_ovl_get_fifo_size(enum omap_plane plane)
+static u32 dispc_ovl_get_fifo_size(enum omap_plane plane)
{
return dispc.fifo_size[plane];
}
@@ -1063,6 +1063,24 @@
REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14);
}
+void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane,
+ u32 *fifo_low, u32 *fifo_high, bool use_fifomerge)
+{
+ /*
+ * All sizes are in bytes. Both the buffer and burst are made of
+ * buffer_units, and the fifo thresholds must be buffer_unit aligned.
+ */
+
+ unsigned buf_unit = dss_feat_get_buffer_size_unit();
+ unsigned fifo_size, burst_size;
+
+ burst_size = dispc_ovl_get_burst_size(plane);
+ fifo_size = dispc_ovl_get_fifo_size(plane);
+
+ *fifo_low = fifo_size - burst_size;
+ *fifo_high = fifo_size - buf_unit;
+}
+
static void dispc_ovl_set_fir(enum omap_plane plane,
int hinc, int vinc,
enum omap_color_component color_comp)