xref: /OK3568_Linux_fs/buildroot/package/weston/0036-backend-drm-Support-setting-interlaced-mode.patch (revision 4882a59341e53eb6f0b4789bf948001014eff981)

From af6bc7c09802c8f8b603cdd72881f07f729e85c6 Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Wed, 21 Oct 2020 15:27:38 +0800
Subject: [PATCH 36/95] backend-drm: Support setting interlaced mode

Tested with:
echo "output:HDMI-A-1:mode=1920x1080i" > /tmp/.weston_drm.conf
> Output HDMI-A-1 changed to 1920x1080i@60 for mode(1920x1080i)

Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
 libweston/backend-drm/drm.c   |  4 ++--
 libweston/backend-drm/modes.c | 25 +++++++++++++++----------
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/libweston/backend-drm/drm.c b/libweston/backend-drm/drm.c
index 9d4354d..7760205 100644
--- a/libweston/backend-drm/drm.c
+++ b/libweston/backend-drm/drm.c
@@ -3711,9 +3711,9 @@ drm_output_modeset(struct drm_output *output, const char *modeline)

 	mode = to_drm_mode(output->base.current_mode);

-	weston_log("Output %s changed to %dx%d@%d for mode(%s)\n",
+	weston_log("Output %s changed to %s@%d for mode(%s)\n",
 		   output->base.name,
-		   mode->mode_info.hdisplay, mode->mode_info.vdisplay,
+		   mode->mode_info.name,
 		   mode->mode_info.vrefresh,
 		   modeline);

diff --git a/libweston/backend-drm/modes.c b/libweston/backend-drm/modes.c
index f3d2c00..8bf6be8 100644
--- a/libweston/backend-drm/modes.c
+++ b/libweston/backend-drm/modes.c
@@ -470,9 +470,8 @@ drm_output_print_modes(struct drm_output *output)
 		dm = to_drm_mode(m);

 		aspect_ratio = aspect_ratio_to_string(m->aspect_ratio);
-		weston_log_continue(STAMP_SPACE "%dx%d@%.1f%s%s%s, %.1f MHz\n",
-				    dm->mode_info.hdisplay,
-				    dm->mode_info.vdisplay,
+		weston_log_continue(STAMP_SPACE "%s@%.1f%s%s%s, %.1f MHz\n",
+				    dm->mode_info.name,
 				    m->refresh / 1000.0,
 				    aspect_ratio,
 				    m->flags & WL_OUTPUT_MODE_PREFERRED ?
@@ -515,11 +514,15 @@ drm_output_choose_mode(struct drm_output *output,
 	enum weston_mode_aspect_ratio target_aspect = WESTON_MODE_PIC_AR_NONE;
 	struct drm_device *device;

+#define WESTON_MODE_NAME(mode) \
+	to_drm_mode(mode)->mode_info.name
+
 	device = output->device;
+
 	target_aspect = target_mode->aspect_ratio;
 	src_aspect = output->base.current_mode->aspect_ratio;
-	if (output->base.current_mode->width == target_mode->width &&
-	    output->base.current_mode->height == target_mode->height &&
+	if (!strcmp(WESTON_MODE_NAME(output->base.current_mode),
+		    WESTON_MODE_NAME(target_mode)) &&
 	    (output->base.current_mode->refresh == target_mode->refresh ||
 	     target_mode->refresh == 0)) {
 		if (!device->aspect_ratio_supported || src_aspect == target_aspect)
@@ -529,8 +532,8 @@ drm_output_choose_mode(struct drm_output *output,
 	wl_list_for_each(mode, &output->base.mode_list, base.link) {

 		src_aspect = mode->base.aspect_ratio;
-		if (mode->mode_info.hdisplay == target_mode->width &&
-		    mode->mode_info.vdisplay == target_mode->height) {
+		if (!strcmp(mode->mode_info.name,
+			    WESTON_MODE_NAME(target_mode))) {
 			if (mode->base.refresh == target_mode->refresh ||
 			    target_mode->refresh == 0) {
 				if (!device->aspect_ratio_supported ||
@@ -607,6 +610,7 @@ drm_output_choose_initial_mode(struct drm_device *device,
 	struct drm_mode *best = NULL;
 	struct drm_mode *drm_mode;
 	drmModeModeInfo drm_modeline;
+	char name[16] = {0};
 	int32_t width = 0;
 	int32_t height = 0;
 	uint32_t refresh = 0;
@@ -616,7 +620,9 @@ drm_output_choose_initial_mode(struct drm_device *device,
 	int n;

 	if (mode == WESTON_DRM_BACKEND_OUTPUT_PREFERRED && modeline) {
-		n = sscanf(modeline, "%dx%d@%d %u:%u", &width, &height,
+		sscanf(modeline, "%12[^@pP]", name);
+
+		n = sscanf(modeline, "%dx%d%*[^0-9]%d %u:%u", &width, &height,
 			   &refresh, &aspect_width, &aspect_height);
 		if (device->aspect_ratio_supported && n == 5) {
 			if (aspect_width == 4 && aspect_height == 3)
@@ -646,8 +652,7 @@ drm_output_choose_initial_mode(struct drm_device *device,
 	}

 	wl_list_for_each_reverse(drm_mode, &output->base.mode_list, base.link) {
-		if (width == drm_mode->mode_info.hdisplay &&
-		    height == drm_mode->mode_info.vdisplay &&
+		if (!strcmp(name, drm_mode->mode_info.name) &&
 		    (refresh == 0 || refresh == drm_mode->mode_info.vrefresh)) {
 			if (!device->aspect_ratio_supported ||
 			    aspect_ratio == drm_mode->base.aspect_ratio)
--
2.20.1