OMAP: DSS2: DISPC: rename overlay related funcs

Rename dispc's overlay related functions as follows:

- Remove prepending underscores, which were originally used to inform
  that the clocks needs to be enabled. This meaning is no longer valid.
- Prepend the functions with dispc_ovl_*
- Remove "plane" from the name, e.g. dispc_set_plane_ba0 ->
  dispc_ovl_set_ba0

The idea is to group overlay related functions so that it can be deduced
from the function name that it writes to overlay spesific registers.

All dispc_ovl_* functions have enum omap_plane as the first parameter.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/video/omap2/dss/dss.h

@@ -387,16 +387,16 @@ void dispc_enable_fifohandcheck(enum omap_channel channel, bool enable);
 
 void dispc_set_lcd_size(enum omap_channel channel, u16 width, u16 height);
 void dispc_set_digit_size(u16 width, u16 height);
-u32 dispc_get_plane_fifo_size(enum omap_plane plane);
-void dispc_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high);
+u32 dispc_ovl_get_fifo_size(enum omap_plane plane);
+void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high);
 void dispc_enable_fifomerge(bool enable);
-u32 dispc_get_burst_size(enum omap_plane plane);
+u32 dispc_ovl_get_burst_size(enum omap_plane plane);
 void dispc_enable_cpr(enum omap_channel channel, bool enable);
 void dispc_set_cpr_coef(enum omap_channel channel,
 		struct omap_dss_cpr_coefs *coefs);
 
 void dispc_enable_gamma_table(bool enable);
-int dispc_setup_plane(enum omap_plane plane,
+int dispc_ovl_setup(enum omap_plane plane,
 		      u32 paddr, u16 screen_width,
 		      u16 pos_x, u16 pos_y,
 		      u16 width, u16 height,
@@ -413,8 +413,8 @@ bool dispc_go_busy(enum omap_channel channel);
 void dispc_go(enum omap_channel channel);
 void dispc_enable_channel(enum omap_channel channel, bool enable);
 bool dispc_is_channel_enabled(enum omap_channel channel);
-int dispc_enable_plane(enum omap_plane plane, bool enable);
-void dispc_enable_replication(enum omap_plane plane, bool enable);
+int dispc_ovl_enable(enum omap_plane plane, bool enable);
+void dispc_ovl_enable_replication(enum omap_plane plane, bool enable);
 
 void dispc_set_parallel_interface_mode(enum omap_channel channel,
 		enum omap_parallel_interface_mode mode);

drivers/video/omap2/dss/manager.c

@@ -823,7 +823,7 @@ static int configure_overlay(enum omap_plane plane)
 	oi = &c->info;
 
 	if (!c->enabled) {
-		dispc_enable_plane(plane, 0);
+		dispc_ovl_enable(plane, 0);
 		return 0;
 	}
 
@@ -851,7 +851,7 @@ static int configure_overlay(enum omap_plane plane)
 		/* If the overlay is outside the update region, disable it */
 		if (!rectangle_intersects(mc->x, mc->y, mc->w, mc->h,
 					x, y, outw, outh)) {
-			dispc_enable_plane(plane, 0);
+			dispc_ovl_enable(plane, 0);
 			return 0;
 		}
 
@@ -929,7 +929,7 @@ static int configure_overlay(enum omap_plane plane)
 		}
 	}
 
-	r = dispc_setup_plane(plane,
+	r = dispc_ovl_setup(plane,
 			paddr,
 			oi->screen_width,
 			x, y,
@@ -947,16 +947,16 @@ static int configure_overlay(enum omap_plane plane)
 
 	if (r) {
 		/* this shouldn't happen */
-		DSSERR("dispc_setup_plane failed for ovl %d\n", plane);
-		dispc_enable_plane(plane, 0);
+		DSSERR("dispc_ovl_setup failed for ovl %d\n", plane);
+		dispc_ovl_enable(plane, 0);
 		return r;
 	}
 
-	dispc_enable_replication(plane, c->replication);
+	dispc_ovl_enable_replication(plane, c->replication);
 
-	dispc_set_fifo_threshold(plane, c->fifo_low, c->fifo_high);
+	dispc_ovl_set_fifo_threshold(plane, c->fifo_low, c->fifo_high);
 
-	dispc_enable_plane(plane, 1);
+	dispc_ovl_enable(plane, 1);
 
 	return 0;
 }
@@ -1437,11 +1437,11 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
 
 		dssdev = ovl->manager->device;
 
-		size = dispc_get_plane_fifo_size(ovl->id);
+		size = dispc_ovl_get_fifo_size(ovl->id);
 		if (use_fifomerge)
 			size *= 3;
 
-		burst_size = dispc_get_burst_size(ovl->id);
+		burst_size = dispc_ovl_get_burst_size(ovl->id);
 
 		switch (dssdev->type) {
 		case OMAP_DISPLAY_TYPE_DPI: