openwrt/target/linux/bcm27xx/patches-6.6/950-0012-drm-vc4-Make-VEC-progressive-modes-readily-accessibl.patch

From 2f04da8b66d1124c4cf9c1fd9733821801a01a5d Mon Sep 17 00:00:00 2001
From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
Date: Thu, 15 Jul 2021 01:08:11 +0200
Subject: [PATCH 0012/1085] drm/vc4: Make VEC progressive modes readily
 accessible

Add predefined modelines for the 240p (NTSC) and 288p (PAL) progressive
modes, and report them through vc4_vec_connector_get_modes().

Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
---
 drivers/gpu/drm/vc4/vc4_vec.c | 36 ++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/vc4/vc4_vec.c
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
@@ -273,6 +273,18 @@ static const struct debugfs_reg32 vec_re
 	VC4_REG32(VEC_DAC_MISC),
 };
 
+static const struct drm_display_mode drm_mode_240p = {
+	DRM_MODE("720x240", DRM_MODE_TYPE_DRIVER, 13500,
+		 720, 720 + 14, 720 + 14 + 64, 720 + 14 + 64 + 60, 0,
+		 240, 240 + 3, 240 + 3 + 3, 262, 0, 0)
+};
+
+static const struct drm_display_mode drm_mode_288p = {
+	DRM_MODE("720x288", DRM_MODE_TYPE_DRIVER, 13500,
+		 720, 720 + 20, 720 + 20 + 64, 720 + 20 + 64 + 60, 0,
+		 288, 288 + 2, 288 + 2 + 3, 312, 0, 0)
+};
+
 static const struct vc4_vec_tv_mode vc4_vec_tv_modes[] = {
 	{
 		.mode = DRM_MODE_TV_MODE_NTSC,
@@ -507,9 +519,31 @@ static const struct drm_connector_funcs
 	.atomic_set_property = vc4_vec_connector_set_property,
 };
 
+static int vc4_vec_connector_get_modes(struct drm_connector *connector)
+{
+	struct drm_display_mode *mode;
+	int count = drm_connector_helper_tv_get_modes(connector);
+
+	mode = drm_mode_duplicate(connector->dev, &drm_mode_240p);
+	if (!mode)
+		return -ENOMEM;
+
+	drm_mode_probed_add(connector, mode);
+	count++;
+
+	mode = drm_mode_duplicate(connector->dev, &drm_mode_288p);
+	if (!mode)
+		return -ENOMEM;
+
+	drm_mode_probed_add(connector, mode);
+	count++;
+
+	return count;
+}
+
 static const struct drm_connector_helper_funcs vc4_vec_connector_helper_funcs = {
 	.atomic_check = drm_atomic_helper_connector_tv_check,
-	.get_modes = drm_connector_helper_tv_get_modes,
+	.get_modes = vc4_vec_connector_get_modes,
 };
 
 static int vc4_vec_connector_init(struct drm_device *dev, struct vc4_vec *vec)