OMAPDSS: fix set_timings

set_timings function of DSS's output drivers are not consistent. Some of
them disable the output, set the timings, and re-enable the output. Some
set the timings on the fly, while the output is enabled. And some just
store the given timings, so that they will be taken into use next time
the output is enabled.

We require the DISPC output to be disabled when changing the timings,
and so we can change all the output drivers' set_timings to just store
the given timings.

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

5 files changed, 4 insertions, 49 deletions

diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c
index 5bd957e85505..5f09d503d619 100644
--- a/drivers/video/omap2/dss/display.c
+++ b/drivers/video/omap2/dss/display.c
@@ -142,7 +142,11 @@ static ssize_t display_timings_store(struct device *dev,
 	if (r)
 		return r;
 
+	dssdev->driver->disable(dssdev);
 	dssdev->driver->set_timings(dssdev, &t);
+	r = dssdev->driver->enable(dssdev);
+	if (r)
+		return r;
 
 	return size;
 }
diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
index 99b9851f8429..5ccce9b69e42 100644
--- a/drivers/video/omap2/dss/dpi.c
+++ b/drivers/video/omap2/dss/dpi.c
@@ -277,26 +277,12 @@ EXPORT_SYMBOL(omapdss_dpi_display_disable);
 void omapdss_dpi_set_timings(struct omap_dss_device *dssdev,
 		struct omap_video_timings *timings)
 {
-	int r;
-
 	DSSDBG("dpi_set_timings\n");
 
 	mutex_lock(&dpi.lock);
 
 	dpi.timings = *timings;
 
-	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
-		r = dispc_runtime_get();
-		if (r)
-			return;
-
-		dpi_set_mode(dssdev);
-
-		dispc_runtime_put();
-	} else {
-		dss_mgr_set_timings(dssdev->manager, timings);
-	}
-
 	mutex_unlock(&dpi.lock);
 }
 EXPORT_SYMBOL(omapdss_dpi_set_timings);
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index ccfc677c910a..83f18458a406 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -632,18 +632,6 @@ void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev,
 	if (t != NULL)
 		hdmi.ip_data.cfg = *t;
 
-	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
-		int r;
-
-		hdmi_power_off(dssdev);
-
-		r = hdmi_power_on(dssdev);
-		if (r)
-			DSSERR("failed to power on device\n");
-	} else {
-		dss_mgr_set_timings(dssdev->manager, &t->timings);
-	}
-
 	mutex_unlock(&hdmi.lock);
 }
 
diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c
index 3bf1bfe29585..c87e07ebb16d 100644
--- a/drivers/video/omap2/dss/sdi.c
+++ b/drivers/video/omap2/dss/sdi.c
@@ -152,17 +152,7 @@ EXPORT_SYMBOL(omapdss_sdi_display_disable);
 void omapdss_sdi_set_timings(struct omap_dss_device *dssdev,
 		struct omap_video_timings *timings)
 {
-	int r;
-
 	sdi.timings = *timings;
-
-	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
-		omapdss_sdi_display_disable(dssdev);
-
-		r = omapdss_sdi_display_enable(dssdev);
-		if (r)
-			DSSERR("failed to set new timings\n");
-	}
 }
 EXPORT_SYMBOL(omapdss_sdi_set_timings);
 
diff --git a/drivers/video/omap2/dss/venc.c b/drivers/video/omap2/dss/venc.c
index 45252cf034b3..17b31029a793 100644
--- a/drivers/video/omap2/dss/venc.c
+++ b/drivers/video/omap2/dss/venc.c
@@ -564,19 +564,6 @@ void omapdss_venc_set_timings(struct omap_dss_device *dssdev,
 
 	venc.timings = *timings;
 
-	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
-		int r;
-
-		/* turn the venc off and on to get new timings to use */
-		venc_power_off(dssdev);
-
-		r = venc_power_on(dssdev);
-		if (r)
-			DSSERR("failed to power on VENC\n");
-	} else {
-		dss_mgr_set_timings(dssdev->manager, timings);
-	}
-
 	mutex_unlock(&venc.venc_lock);
 }