1 files changed, 23 insertions, 17 deletions

diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c
index 77d6221618f4..2bbdb7ff7daf 100644
--- a/drivers/video/omap2/dss/dispc.c
+++ b/drivers/video/omap2/dss/dispc.c
@@ -100,8 +100,6 @@ static struct {
 	struct platform_device *pdev;
 	void __iomem    *base;
 
-	int		ctx_loss_cnt;
-
 	int irq;
 
 	unsigned long core_clk_rate;
@@ -357,29 +355,20 @@ static void dispc_save_context(void)
 	if (dss_has_feature(FEAT_CORE_CLK_DIV))
 		SR(DIVISOR);
 
-	dispc.ctx_loss_cnt = dss_get_ctx_loss_count();
 	dispc.ctx_valid = true;
 
-	DSSDBG("context saved, ctx_loss_count %d\n", dispc.ctx_loss_cnt);
+	DSSDBG("context saved\n");
 }
 
 static void dispc_restore_context(void)
 {
-	int i, j, ctx;
+	int i, j;
 
 	DSSDBG("dispc_restore_context\n");
 
 	if (!dispc.ctx_valid)
 		return;
 
-	ctx = dss_get_ctx_loss_count();
-
-	if (ctx >= 0 && ctx == dispc.ctx_loss_cnt)
-		return;
-
-	DSSDBG("ctx_loss_count: saved %d, current %d\n",
-			dispc.ctx_loss_cnt, ctx);
-
 	/*RR(IRQENABLE);*/
 	/*RR(CONTROL);*/
 	RR(CONFIG);
@@ -2884,7 +2873,7 @@ bool dispc_mgr_timings_ok(enum omap_channel channel,
 
 	timings_ok = _dispc_mgr_size_ok(timings->x_res, timings->y_res);
 
-	timings_ok &= _dispc_mgr_pclk_ok(channel, timings->pixel_clock * 1000);
+	timings_ok &= _dispc_mgr_pclk_ok(channel, timings->pixelclock);
 
 	if (dss_mgr_is_lcd(channel)) {
 		timings_ok &= _dispc_lcd_timings_ok(timings->hsw, timings->hfp,
@@ -2979,10 +2968,10 @@ void dispc_mgr_set_timings(enum omap_channel channel,
 		xtot = t.x_res + t.hfp + t.hsw + t.hbp;
 		ytot = t.y_res + t.vfp + t.vsw + t.vbp;
 
-		ht = (timings->pixel_clock * 1000) / xtot;
-		vt = (timings->pixel_clock * 1000) / xtot / ytot;
+		ht = timings->pixelclock / xtot;
+		vt = timings->pixelclock / xtot / ytot;
 
-		DSSDBG("pck %u\n", timings->pixel_clock);
+		DSSDBG("pck %u\n", timings->pixelclock);
 		DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
 			t.hsw, t.hfp, t.hbp, t.vsw, t.vfp, t.vbp);
 		DSSDBG("vsync_level %d hsync_level %d data_pclk_edge %d de_level %d sync_pclk_edge %d\n",
@@ -3768,6 +3757,15 @@ static int dispc_runtime_suspend(struct device *dev)
 
 static int dispc_runtime_resume(struct device *dev)
 {
+	/*
+	 * The reset value for load mode is 0 (OMAP_DSS_LOAD_CLUT_AND_FRAME)
+	 * but we always initialize it to 2 (OMAP_DSS_LOAD_FRAME_ONLY) in
+	 * _omap_dispc_initial_config(). We can thus use it to detect if
+	 * we have lost register context.
+	 */
+	if (REG_GET(DISPC_CONFIG, 2, 1) == OMAP_DSS_LOAD_FRAME_ONLY)
+		return 0;
+
 	_omap_dispc_initial_config();
 
 	dispc_restore_context();
@@ -3780,12 +3778,20 @@ static const struct dev_pm_ops dispc_pm_ops = {
 	.runtime_resume = dispc_runtime_resume,
 };
 
+static const struct of_device_id dispc_of_match[] = {
+	{ .compatible = "ti,omap2-dispc", },
+	{ .compatible = "ti,omap3-dispc", },
+	{ .compatible = "ti,omap4-dispc", },
+	{},
+};
+
 static struct platform_driver omap_dispchw_driver = {
 	.remove         = __exit_p(omap_dispchw_remove),
 	.driver         = {
 		.name   = "omapdss_dispc",
 		.owner  = THIS_MODULE,
 		.pm	= &dispc_pm_ops,
+		.of_match_table = dispc_of_match,
 	},
 };