OMAPDSS: MANAGER: Create a function to check manager timings

Create a function dss_mgr_check_timings() which wraps around the function
dispc_mgr_timings_ok(). This is mainly a clean up to hide dispc functions
from interface drivers.

dss_mgr_check_timings() is added in the function dss_mgr_check(), it currently
takes the timings maintained in the omap_dss_device struct. This would be later
replaced by the timings stored in the manager's private data.

Make dss_mgr_check_timings() and dispc_mgr_timings_ok() take a const
omap_video_timings pointer since these functions just check the timings.

Signed-off-by: Archit Taneja <archit@ti.com>

4 files changed, 20 insertions, 3 deletions

diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 82012d15884b..6eec08400094 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -2479,7 +2479,7 @@ static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp,
 }
 
 bool dispc_mgr_timings_ok(enum omap_channel channel,
-                struct omap_video_timings *timings)
+                const struct omap_video_timings *timings)
 {
         bool timings_ok;
 
diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
index e65cf1f9a694..e01ab9825930 100644
--- a/drivers/video/omap2/dss/dpi.c
+++ b/drivers/video/omap2/dss/dpi.c
@@ -311,7 +311,7 @@ int dpi_check_timings(struct omap_dss_device *dssdev,
         unsigned long pck;
         struct dispc_clock_info dispc_cinfo;
 
-        if (!dispc_mgr_timings_ok(dssdev->manager->id, timings))
+        if (dss_mgr_check_timings(dssdev->manager, timings))
                 return -EINVAL;
 
         if (timings->pixel_clock == 0)
diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h
index b17a2120dc25..a13b3055a447 100644
--- a/drivers/video/omap2/dss/dss.h
+++ b/drivers/video/omap2/dss/dss.h
@@ -208,6 +208,8 @@ int dss_init_overlay_managers(struct platform_device *pdev);
 void dss_uninit_overlay_managers(struct platform_device *pdev);
 int dss_mgr_simple_check(struct omap_overlay_manager *mgr,
                 const struct omap_overlay_manager_info *info);
+int dss_mgr_check_timings(struct omap_overlay_manager *mgr,
+                const struct omap_video_timings *timings);
 int dss_mgr_check(struct omap_overlay_manager *mgr,
                 struct omap_dss_device *dssdev,
                 struct omap_overlay_manager_info *info,
@@ -413,7 +415,7 @@ void dispc_enable_gamma_table(bool enable);
 void dispc_set_loadmode(enum omap_dss_load_mode mode);
 
 bool dispc_mgr_timings_ok(enum omap_channel channel,
-                struct omap_video_timings *timings);
+                const struct omap_video_timings *timings);
 unsigned long dispc_fclk_rate(void);
 void dispc_find_clk_divs(bool is_tft, unsigned long req_pck, unsigned long fck,
                 struct dispc_clock_info *cinfo);
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
index e7364603f6a1..566fbba16774 100644
--- a/drivers/video/omap2/dss/manager.c
+++ b/drivers/video/omap2/dss/manager.c
@@ -654,6 +654,17 @@ static int dss_mgr_check_zorder(struct omap_overlay_manager *mgr,
         return 0;
 }
 
+int dss_mgr_check_timings(struct omap_overlay_manager *mgr,
+                const struct omap_video_timings *timings)
+{
+        if (!dispc_mgr_timings_ok(mgr->id, timings)) {
+                DSSERR("check_manager: invalid timings\n");
+                return -EINVAL;
+        }
+
+        return 0;
+}
+
 int dss_mgr_check(struct omap_overlay_manager *mgr,
                 struct omap_dss_device *dssdev,
                 struct omap_overlay_manager_info *info,
@@ -668,6 +679,10 @@ int dss_mgr_check(struct omap_overlay_manager *mgr,
                         return r;
         }
 
+        r = dss_mgr_check_timings(mgr, &dssdev->panel.timings);
+        if (r)
+                return r;
+
         list_for_each_entry(ovl, &mgr->overlays, list) {
                 struct omap_overlay_info *oi;
                 int r;