[PATCH 02/65] OMAPDSS: Remove old fifomerge hacks

Tomi Valkeinen
2011-11-22T09:22:37Z

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>
---
drivers/video/omap2/dss/manager.c | 26 +-------------------------
1 files changed, 1 insertions(+), 25 deletions(-)

diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
index 6e63845..1be5f47 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);

--
1.7.4.1