From: Jaeyoon Jung <[email protected]> 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 <[email protected]> --- ...fbdev-set-resolution-prior-to-buffer.patch | 29 +++++++++++++++++++ .../lvgl/lvgl-demo-fb_9.1.0.bb | 1 + meta-oe/recipes-graphics/lvgl/lvgl_9.1.0.bb | 1 + 3 files changed, 31 insertions(+) create mode 100644 meta-oe/recipes-graphics/lvgl/files/0008-fix-fbdev-set-resolution-prior-to-buffer.patch diff --git a/meta-oe/recipes-graphics/lvgl/files/0008-fix-fbdev-set-resolution-prior-to-buffer.patch b/meta-oe/recipes-graphics/lvgl/files/0008-fix-fbdev-set-resolution-prior-to-buffer.patch new file mode 100644 index 000000000..449db53df --- /dev/null +++ b/meta-oe/recipes-graphics/lvgl/files/0008-fix-fbdev-set-resolution-prior-to-buffer.patch @@ -0,0 +1,29 @@ +From a6f822f75b3ba01b00c028608c93160d09a6ffd1 Mon Sep 17 00:00:00 2001 +From: Jaeyoon Jung <[email protected]> +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 <[email protected]> +--- + + 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)); diff --git a/meta-oe/recipes-graphics/lvgl/lvgl-demo-fb_9.1.0.bb b/meta-oe/recipes-graphics/lvgl/lvgl-demo-fb_9.1.0.bb index 3fc3f9286..6e8371baa 100644 --- a/meta-oe/recipes-graphics/lvgl/lvgl-demo-fb_9.1.0.bb +++ b/meta-oe/recipes-graphics/lvgl/lvgl-demo-fb_9.1.0.bb @@ -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" diff --git a/meta-oe/recipes-graphics/lvgl/lvgl_9.1.0.bb b/meta-oe/recipes-graphics/lvgl/lvgl_9.1.0.bb index 0ebd6ec42..4435c4077 100644 --- a/meta-oe/recipes-graphics/lvgl/lvgl_9.1.0.bb +++ b/meta-oe/recipes-graphics/lvgl/lvgl_9.1.0.bb @@ -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" -- 2.43.0
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