OMAPDSS: DPI: Maintain our own timings field in driver data

The DPI driver currently relies on the timings in omap_dss_device struct to
configure the DISPC accordingly. This makes the DPI interface driver dependent
on the omap_dss_device struct.

Make the DPI driver data maintain it's own timings field. The panel driver is
expected to call dpi_set_timings()(renamed to omapdss_dpi_set_timings) to set
these timings before the panel is enabled.

In the set_timings() op, we still ensure that the omap_dss_device timings
(dssdev->panel.timings) are configured. This will later be configured only by
the DPI panel drivers.

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

drivers/video/omap2/displays/panel-generic-dpi.c

@@ -565,6 +565,8 @@ static int generic_dpi_panel_power_on(struct omap_dss_device *dssdev)
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 		return 0;
 
+	omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
+
 	r = omapdss_dpi_display_enable(dssdev);
 	if (r)
 		goto err0;
@@ -726,7 +728,7 @@ static void generic_dpi_panel_set_timings(struct omap_dss_device *dssdev,
 
 	mutex_lock(&drv_data->lock);
 
-	dpi_set_timings(dssdev, timings);
+	omapdss_dpi_set_timings(dssdev, timings);
 
 	mutex_unlock(&drv_data->lock);
 }

drivers/video/omap2/displays/panel-lgphilips-lb035q02.c

@@ -55,6 +55,8 @@ static int lb035q02_panel_power_on(struct omap_dss_device *dssdev)
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 		return 0;
 
+	omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
+
 	r = omapdss_dpi_display_enable(dssdev);
 	if (r)
 		goto err0;

drivers/video/omap2/displays/panel-nec-nl8048hl11-01b.c

@@ -175,6 +175,8 @@ static int nec_8048_panel_power_on(struct omap_dss_device *dssdev)
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 		return 0;
 
+	omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
+
 	r = omapdss_dpi_display_enable(dssdev);
 	if (r)
 		goto err0;

drivers/video/omap2/displays/panel-picodlp.c

@@ -377,6 +377,9 @@ static int picodlp_panel_power_on(struct omap_dss_device *dssdev)
 	 * then only i2c commands can be successfully sent to dpp2600
 	 */
 	msleep(1000);
+
+	omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
+
 	r = omapdss_dpi_display_enable(dssdev);
 	if (r) {
 		dev_err(&dssdev->dev, "failed to enable DPI\n");

drivers/video/omap2/displays/panel-sharp-ls037v7dw01.c

@@ -142,6 +142,8 @@ static int sharp_ls_power_on(struct omap_dss_device *dssdev)
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 		return 0;
 
+	omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
+
 	r = omapdss_dpi_display_enable(dssdev);
 	if (r)
 		goto err0;

drivers/video/omap2/displays/panel-tfp410.c

@@ -65,6 +65,8 @@ static int tfp410_power_on(struct omap_dss_device *dssdev)
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 		return 0;
 
+	omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
+
 	r = omapdss_dpi_display_enable(dssdev);
 	if (r)
 		goto err0;
@@ -231,7 +233,7 @@ static void tfp410_set_timings(struct omap_dss_device *dssdev,
 	struct panel_drv_data *ddata = dev_get_drvdata(&dssdev->dev);
 
 	mutex_lock(&ddata->lock);
-	dpi_set_timings(dssdev, timings);
+	omapdss_dpi_set_timings(dssdev, timings);
 	mutex_unlock(&ddata->lock);
 }
 

drivers/video/omap2/displays/panel-tpo-td043mtea1.c

@@ -337,6 +337,8 @@ static int tpo_td043_enable_dss(struct omap_dss_device *dssdev)
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
 		return 0;
 
+	omapdss_dpi_set_timings(dssdev, &dssdev->panel.timings);
+
 	r = omapdss_dpi_display_enable(dssdev);
 	if (r)
 		goto err0;
@@ -480,7 +482,7 @@ static void tpo_td043_remove(struct omap_dss_device *dssdev)
 static void tpo_td043_set_timings(struct omap_dss_device *dssdev,
 		struct omap_video_timings *timings)
 {
-	dpi_set_timings(dssdev, timings);
+	omapdss_dpi_set_timings(dssdev, timings);
 }
 
 static int tpo_td043_check_timings(struct omap_dss_device *dssdev,

drivers/video/omap2/dss/dpi.c

@@ -41,6 +41,7 @@ static struct {
 
 	struct mutex lock;
 
+	struct omap_video_timings timings;
 	struct dss_lcd_mgr_config mgr_config;
 } dpi;
 
@@ -123,7 +124,7 @@ static int dpi_set_dispc_clk(struct omap_dss_device *dssdev,
 
 static int dpi_set_mode(struct omap_dss_device *dssdev)
 {
-	struct omap_video_timings *t = &dssdev->panel.timings;
+	struct omap_video_timings *t = &dpi.timings;
 	int lck_div = 0, pck_div = 0;
 	unsigned long fck = 0;
 	unsigned long pck;
@@ -272,8 +273,8 @@ void omapdss_dpi_display_disable(struct omap_dss_device *dssdev)
 }
 EXPORT_SYMBOL(omapdss_dpi_display_disable);
 
-void dpi_set_timings(struct omap_dss_device *dssdev,
-			struct omap_video_timings *timings)
+void omapdss_dpi_set_timings(struct omap_dss_device *dssdev,
+		struct omap_video_timings *timings)
 {
 	int r;
 
@@ -281,7 +282,9 @@ void dpi_set_timings(struct omap_dss_device *dssdev,
 
 	mutex_lock(&dpi.lock);
 
+	dpi.timings = *timings;
 	dssdev->panel.timings = *timings;
+
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
 		r = dispc_runtime_get();
 		if (r)
@@ -296,7 +299,7 @@ void dpi_set_timings(struct omap_dss_device *dssdev,
 
 	mutex_unlock(&dpi.lock);
 }
-EXPORT_SYMBOL(dpi_set_timings);
+EXPORT_SYMBOL(omapdss_dpi_set_timings);
 
 int dpi_check_timings(struct omap_dss_device *dssdev,
 			struct omap_video_timings *timings)

include/video/omapdss.h

@@ -734,8 +734,8 @@ void omapdss_dsi_display_disable(struct omap_dss_device *dssdev,
 
 int omapdss_dpi_display_enable(struct omap_dss_device *dssdev);
 void omapdss_dpi_display_disable(struct omap_dss_device *dssdev);
-void dpi_set_timings(struct omap_dss_device *dssdev,
-			struct omap_video_timings *timings);
+void omapdss_dpi_set_timings(struct omap_dss_device *dssdev,
+		struct omap_video_timings *timings);
 int dpi_check_timings(struct omap_dss_device *dssdev,
 			struct omap_video_timings *timings);