OMAPDSS: VENC: Maintain copy of venc type in driver data

The VENC driver currently relies on the omap_dss_device struct to configure the
venc type. This makes the VENC interface driver dependent on the omap_dss_device
struct.

Make the VENC driver data maintain it's own 'venc type' field. A panel driver
is expected to call omapdss_venc_set_type() before enabling the interface or
changing the type via display sysfs attributes.
Signed-off-by: Archit Taneja <archit@ti.com>

drivers/video/omap2/dss/dss.h

@@ -477,6 +477,8 @@ int omapdss_venc_check_timings(struct omap_dss_device *dssdev,
 		struct omap_video_timings *timings);
 u32 omapdss_venc_get_wss(struct omap_dss_device *dssdev);
 int omapdss_venc_set_wss(struct omap_dss_device *dssdev, u32 wss);
+void omapdss_venc_set_type(struct omap_dss_device *dssdev,
+		enum omap_dss_venc_type type);
 int venc_panel_init(void);
 void venc_panel_exit(void);
 

drivers/video/omap2/dss/venc.c

@@ -302,6 +302,7 @@ static struct {
 	struct clk	*tv_dac_clk;
 
 	struct omap_video_timings timings;
+	enum omap_dss_venc_type type;
 } venc;
 
 static inline void venc_write_reg(int idx, u32 val)
@@ -436,12 +437,12 @@ static int venc_power_on(struct omap_dss_device *dssdev)
 	venc_reset();
 	venc_write_config(venc_timings_to_config(&venc.timings));
 
-	dss_set_venc_output(dssdev->phy.venc.type);
+	dss_set_venc_output(venc.type);
 	dss_set_dac_pwrdn_bgz(1);
 
 	l = 0;
 
-	if (dssdev->phy.venc.type == OMAP_DSS_VENC_TYPE_COMPOSITE)
+	if (venc.type == OMAP_DSS_VENC_TYPE_COMPOSITE)
 		l |= 1 << 1;
 	else /* S-Video */
 		l |= (1 << 0) | (1 << 2);
@@ -628,6 +629,16 @@ int omapdss_venc_set_wss(struct omap_dss_device *dssdev, u32 wss)
 	return r;
 }
 
+void omapdss_venc_set_type(struct omap_dss_device *dssdev,
+		enum omap_dss_venc_type type)
+{
+	mutex_lock(&venc.venc_lock);
+
+	venc.type = type;
+
+	mutex_unlock(&venc.venc_lock);
+}
+
 static int __init venc_init_display(struct omap_dss_device *dssdev)
 {
 	DSSDBG("init_display\n");

drivers/video/omap2/dss/venc_panel.c

@@ -68,6 +68,7 @@ static ssize_t display_output_type_store(struct device *dev,
 
 	if (dssdev->phy.venc.type != new_type) {
 		dssdev->phy.venc.type = new_type;
+		omapdss_venc_set_type(dssdev, new_type);
 		if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
 			omapdss_venc_display_disable(dssdev);
 			omapdss_venc_display_enable(dssdev);
@@ -128,6 +129,7 @@ static int venc_panel_enable(struct omap_dss_device *dssdev)
 	}
 
 	omapdss_venc_set_timings(dssdev, &dssdev->panel.timings);
+	omapdss_venc_set_type(dssdev, dssdev->phy.venc.type);
 
 	r = omapdss_venc_display_enable(dssdev);
 	if (r)