apalis-tk1: fix issues when using eDP display-out

Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>

3 files changed, 47 insertions, 13 deletions

diff --git a/drivers/video/tegra/dc/dp.c b/drivers/video/tegra/dc/dp.c
index 943e3f115d80..304cb89dfc5f 100644
--- a/drivers/video/tegra/dc/dp.c
+++ b/drivers/video/tegra/dc/dp.c
@@ -24,6 +24,8 @@
 #include <linux/tegra-soc.h>
 #include <linux/clk/tegra.h>
 #include <linux/moduleparam.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 
 #include <mach/dc.h>
 #include <mach/fb.h>
@@ -1403,24 +1405,49 @@ static int tegra_dc_dp_init(struct tegra_dc *dc)
 	struct clk	 *parent_clk;
 	int err;
 	u32 irq;
+	struct resource dpaux_res;
+	struct device_node *np = dc->ndev->dev.of_node;
+#ifdef CONFIG_USE_OF
+	struct device_node *np_dpaux =
+		of_find_node_by_path("/host1x/dpaux");
+#else
+	struct device_node *np_dpaux = NULL;
+#endif
 
 
 	dp = kzalloc(sizeof(*dp), GFP_KERNEL);
 	if (!dp)
 		return -ENOMEM;
 
-	irq = platform_get_irq_byname(dc->ndev, "irq_dp");
-	if (irq <= 0) {
-		dev_err(&dc->ndev->dev, "dp: no irq\n");
-		err = -ENOENT;
-		goto err_free_dp;
-	}
+	if (np) {
+		if (np_dpaux && of_device_is_available(np_dpaux)) {
+			irq = irq_of_parse_and_map(np_dpaux, 0);
+			if (irq <= 0) {
+				dev_err(&dc->ndev->dev, "dp: no irq\n");
+				err = -ENOENT;
+				goto err_free_dp;
+			}
+			of_address_to_resource(np_dpaux, 0, &dpaux_res);
+			res = &dpaux_res;
+		} else {
+			err = -ENOENT;
+			goto err_free_dp;
+		}
+	} else {
+		irq = platform_get_irq_byname(dc->ndev, "irq_dp");
+		if (irq <= 0) {
+			dev_err(&dc->ndev->dev, "dp: no irq\n");
+			err = -ENOENT;
+			goto err_free_dp;
+		}
 
-	res = platform_get_resource_byname(dc->ndev, IORESOURCE_MEM, "dpaux");
-	if (!res) {
-		dev_err(&dc->ndev->dev, "dp: no mem resources for dpaux\n");
-		err = -EFAULT;
-		goto err_free_dp;
+		res = platform_get_resource_byname(dc->ndev, IORESOURCE_MEM,
+				"dpaux");
+		if (!res) {
+			dev_err(&dc->ndev->dev, "dp: no mem for dpaux\n");
+			err = -EFAULT;
+			goto err_free_dp;
+		}
 	}
 
 	base_res = request_mem_region(res->start, resource_size(res),
diff --git a/drivers/video/tegra/dc/mode.c b/drivers/video/tegra/dc/mode.c
index ab8907815749..39e8279859bb 100644
--- a/drivers/video/tegra/dc/mode.c
+++ b/drivers/video/tegra/dc/mode.c
@@ -574,7 +574,8 @@ int tegra_dc_var_to_dc_mode(struct tegra_dc *dc, struct fb_var_screeninfo *var,
 	mode->h_front_porch = var->right_margin;
 	mode->v_front_porch = var->lower_margin;
 	mode->stereo_mode = stereo_mode;
-	if (dc->out->type == TEGRA_DC_OUT_HDMI) {
+	if (dc->out->type == TEGRA_DC_OUT_HDMI ||
+			 dc->out->type == TEGRA_DC_OUT_DP) {
 		/* HDMI controller requires h_ref=1, v_ref=1 */
 		mode->h_ref_to_sync = 1;
 		mode->v_ref_to_sync = 1;
@@ -771,7 +772,8 @@ int tegra_dc_set_fb_mode(struct tegra_dc *dc,
 		return -EINVAL;
 #endif
 
-	if (dc->out->type == TEGRA_DC_OUT_HDMI) {
+	if (dc->out->type == TEGRA_DC_OUT_HDMI ||
+			 dc->out->type == TEGRA_DC_OUT_DP) {
 		/* HDMI controller requires h_ref=1, v_ref=1 */
 		mode.h_ref_to_sync = 1;
 		mode.v_ref_to_sync = 1;
diff --git a/drivers/video/tegra/dc/of_dc.c b/drivers/video/tegra/dc/of_dc.c
index 1f38c3e8e36b..aed0fda91299 100644
--- a/drivers/video/tegra/dc/of_dc.c
+++ b/drivers/video/tegra/dc/of_dc.c
@@ -1812,6 +1812,7 @@ struct tegra_dc_platform_data
 		pdata->default_out->disable = dc_dp_disable;
 		pdata->default_out->postsuspend = dc_dp_postsuspend;
 
+
 		np_target_disp =
 			of_get_child_by_name(dc_connection, "display");
 		if (!np_target_disp ||
@@ -1819,6 +1820,10 @@ struct tegra_dc_platform_data
 			pr_err("dp/display node is NOT valid\n");
 			goto fail_parse;
 		}
+		err = parse_dp_lt_config(ndev, np_target_disp,
+		pdata->default_out);
+		if (err)
+			goto fail_parse;
 	}
 
 	default_out_np = of_get_child_by_name(np_target_disp,