OMAPDSS: Remove old fifomerge hacks

Once in a time omapdss had basic support for fifomerge. Fifomerge was
removed as the implementation didn't work properly, and a proper
implementation is a complex problem.

However, some unused fifo-merge related code was left behind. This patch
removes those.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 1 insertions, 25 deletions

diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
index 6e63845cc7d7..1be5f47a2114 100644
--- a/drivers/video/omap2/dss/manager.c
+++ b/drivers/video/omap2/dss/manager.c
@@ -1313,8 +1313,6 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
         struct manager_cache_data *mc;
         int i;
         struct omap_overlay *ovl;
-        int num_planes_enabled = 0;
-        bool use_fifomerge;
         unsigned long flags;
         int r;
 
@@ -1347,11 +1345,8 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
                         continue;
                 }
 
-                if (!ovl->info_dirty) {
-                        if (oc->enabled)
-                                ++num_planes_enabled;
+                if (!ovl->info_dirty)
                         continue;
-                }
 
                 dssdev = ovl->manager->device;
 
@@ -1375,8 +1370,6 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
                 oc->channel = ovl->manager->id;
 
                 oc->enabled = true;
-
-                ++num_planes_enabled;
         }
 
         /* Configure managers */
@@ -1406,21 +1399,6 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
                         dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
         }
 
-        /* XXX TODO: Try to get fifomerge working. The problem is that it
-         * affects both managers, not individually but at the same time. This
-         * means the change has to be well synchronized. I guess the proper way
-         * is to have a two step process for fifo merge:
-         *        fifomerge enable:
-         *             1. disable other planes, leaving one plane enabled
-         *             2. wait until the planes are disabled on HW
-         *             3. config merged fifo thresholds, enable fifomerge
-         *        fifomerge disable:
-         *             1. config unmerged fifo thresholds, disable fifomerge
-         *             2. wait until fifo changes are in HW
-         *             3. enable planes
-         */
-        use_fifomerge = false;
-
         /* Configure overlay fifos */
         for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
                 struct omap_dss_device *dssdev;
@@ -1436,8 +1414,6 @@ static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
                 dssdev = ovl->manager->device;
 
                 size = dispc_ovl_get_fifo_size(ovl->id);
-                if (use_fifomerge)
-                        size *= 3;
 
                 burst_size = dispc_ovl_get_burst_size(ovl->id);