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lvgl: Set resolution prior to buffer

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It fixes an issue where the fbdev driver fails to set up a buffer due to
buffer size mismatch. It happens when the actual screen resolution is
smaller than the default one 800x480 because the actual resolution was
being set after lv_display_set_buffers.

Signed-off-by: Jaeyoon Jung <jaeyoon.jung@lge.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
This commit is contained in:
Jaeyoon Jung 2024-04-03 06:30:57 +09:00 committed by Khem Raj
parent 04fcbeb562
commit 06155c3e67
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3 changed files with 31 additions and 0 deletions
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29
meta-oe/recipes-graphics/lvgl/files/0008-fix-fbdev-set-resolution-prior-to-buffer.patch Normal file
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@ -0,0 +1,29 @@
From a6f822f75b3ba01b00c028608c93160d09a6ffd1 Mon Sep 17 00:00:00 2001
From: Jaeyoon Jung <jaeyoon.jung@lge.com>
Date: Mon, 1 Apr 2024 18:00:39 +0900
Subject: [PATCH] fix(fbdev): set resolution prior to buffer
Otherwise it ends up with using the default value 800x480 and may fail
at lv_display_set_buffers due to incorrect resolution.
Upstream-Status: Submitted [https://github.com/lvgl/lvgl/pull/6004]
Signed-off-by: Jaeyoon Jung <jaeyoon.jung@lge.com>
---
src/drivers/display/fb/lv_linux_fbdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/drivers/display/fb/lv_linux_fbdev.c b/src/drivers/display/fb/lv_linux_fbdev.c
index b3cc89199..5fb4c5c9f 100644
--- a/src/drivers/display/fb/lv_linux_fbdev.c
+++ b/src/drivers/display/fb/lv_linux_fbdev.c
@@ -233,8 +233,8 @@ void lv_linux_fbdev_set_file(lv_display_t * disp, const char * file)
draw_buf_2 = malloc(draw_buf_size);
}
- lv_display_set_buffers(disp, draw_buf, draw_buf_2, draw_buf_size, LV_LINUX_FBDEV_RENDER_MODE);
lv_display_set_resolution(disp, hor_res, ver_res);
+ lv_display_set_buffers(disp, draw_buf, draw_buf_2, draw_buf_size, LV_LINUX_FBDEV_RENDER_MODE);
if(width > 0) {
lv_display_set_dpi(disp, DIV_ROUND_UP(hor_res * 254, width * 10));

1
meta-oe/recipes-graphics/lvgl/lvgl-demo-fb_9.1.0.bb
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@ -13,6 +13,7 @@ SRC_URI = "\
file://0005-Add-DRM-KMS-example-support.patch \
file://0006-Add-SDL2-example-support.patch \
file://0007-fix-cmake-generate-versioned-shared-libraries.patch;patchdir=lvgl \
file://0008-fix-fbdev-set-resolution-prior-to-buffer.patch;patchdir=lvgl \
"
SRCREV_demo = "dccc6a1ca48372aa993dbea7a8e17dec6f42df6a"
SRCREV_lvgl = "e1c0b21b2723d391b885de4b2ee5cc997eccca91"

1
meta-oe/recipes-graphics/lvgl/lvgl_9.1.0.bb
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@ -12,6 +12,7 @@ SRC_URI = "\
git://github.com/lvgl/lvgl;protocol=https;branch=master \
file://0002-fix-sdl-handle-both-LV_IMAGE_SRC_FILE-and-LV_IMAGE_S.patch \
file://0007-fix-cmake-generate-versioned-shared-libraries.patch \
file://0008-fix-fbdev-set-resolution-prior-to-buffer.patch \
"
SRCREV = "e1c0b21b2723d391b885de4b2ee5cc997eccca91"