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

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

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

Make the SDI panel driver configure the new timings is the omap_dss_device
struct(dssdev->panel.timings). The SDI driver is responsible for maintaining
only it's own copy of timings.

Signed-off-by: Archit Taneja <archit@ti.com>
diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c
index 0474962..6ec6614 100644
--- a/drivers/video/omap2/dss/sdi.c
+++ b/drivers/video/omap2/dss/sdi.c
@@ -34,6 +34,7 @@
 	struct regulator *vdds_sdi_reg;
 
 	struct dss_lcd_mgr_config mgr_config;
+	struct omap_video_timings timings;
 } sdi;
 
 static void sdi_config_lcd_manager(struct omap_dss_device *dssdev)
@@ -51,7 +52,7 @@
 
 int omapdss_sdi_display_enable(struct omap_dss_device *dssdev)
 {
-	struct omap_video_timings *t = &dssdev->panel.timings;
+	struct omap_video_timings *t = &sdi.timings;
 	struct dss_clock_info dss_cinfo;
 	struct dispc_clock_info dispc_cinfo;
 	unsigned long pck;
@@ -77,8 +78,8 @@
 		goto err_get_dispc;
 
 	/* 15.5.9.1.2 */
-	dssdev->panel.timings.data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
-	dssdev->panel.timings.sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
+	t->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
+	t->sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE;
 
 	r = dss_calc_clock_div(t->pixel_clock * 1000, &dss_cinfo, &dispc_cinfo);
 	if (r)
@@ -151,7 +152,7 @@
 {
 	int r;
 
-	dssdev->panel.timings = *timings;
+	sdi.timings = *timings;
 
 	if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
 		omapdss_sdi_display_disable(dssdev);