[Buildroot] [git commit branch/2022.02.x] package/sdl2: fix sdl_init() error with kernel 5.15

[Peter Korsgaard]

commit: https://git.buildroot.net/buildroot/commit/?id=21c0c0ae138858c54276256281262105863b2a9b
branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/2022.02.x

Fixes #6421
Backport from: da9ba3a2a1536017e4ce1ee0f4276578d1ce6e29

Signed-off-by: Michael Fischer <mf at go-sys.de>
[yann.morin.1998 at free.fr: make it an actual backport]
Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
(cherry picked from commit 7928c51bf625333102358ed1c9d84efe3e6bdc01)
Signed-off-by: Peter Korsgaard <peter at korsgaard.com>
---
 ...oesn-t-have-a-mode-configured-use-the-pre.patch | 76 ++++++++++++++++++++++
 1 file changed, 76 insertions(+)

diff --git a/package/sdl2/0001-If-a-CRTC-doesn-t-have-a-mode-configured-use-the-pre.patch b/package/sdl2/0001-If-a-CRTC-doesn-t-have-a-mode-configured-use-the-pre.patch
new file mode 100644
index 0000000000..c8be280c56
--- /dev/null
+++ b/package/sdl2/0001-If-a-CRTC-doesn-t-have-a-mode-configured-use-the-pre.patch
@@ -0,0 +1,76 @@
+From da9ba3a2a1536017e4ce1ee0f4276578d1ce6e29 Mon Sep 17 00:00:00 2001
+From: Sam Lantinga <slouken at libsdl.org>
+Date: Fri, 18 Nov 2022 12:17:27 -0800
+Subject: [PATCH] If a CRTC doesn't have a mode configured, use the preferred
+ or largest mode as the default mode
+
+Fixes https://github.com/libsdl-org/SDL/issues/6421
+
+[mf at go-sys.de: backport from upstream]
+Signed-off-by: Michael Fischer <mf at go-sys.de>
+[yann.morin.1998 at free.fr: do an actual backport]
+Signed-off-by: Yann E. MORIN <yann.morin.1998 at free.fr>
+---
+ src/video/kmsdrm/SDL_kmsdrmvideo.c | 35 +++++++++++++++++++++++++-----
+ 1 file changed, 29 insertions(+), 6 deletions(-)
+
+diff --git a/src/video/kmsdrm/SDL_kmsdrmvideo.c b/src/video/kmsdrm/SDL_kmsdrmvideo.c
+index eae721455..eeeefef2b 100644
+--- a/src/video/kmsdrm/SDL_kmsdrmvideo.c
++++ b/src/video/kmsdrm/SDL_kmsdrmvideo.c
+@@ -666,8 +666,8 @@ KMSDRM_CrtcGetVrr(uint32_t drm_fd, uint32_t crtc_id)
+ /* Gets a DRM connector, builds an SDL_Display with it, and adds it to the
+    list of SDL Displays in _this->displays[]  */
+ static void
+-KMSDRM_AddDisplay (_THIS, drmModeConnector *connector, drmModeRes *resources) {
+-
++KMSDRM_AddDisplay (_THIS, drmModeConnector *connector, drmModeRes *resources)
++{
+     SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata);
+     SDL_DisplayData *dispdata = NULL;
+     SDL_VideoDisplay display = {0};
+@@ -770,14 +770,37 @@ KMSDRM_AddDisplay (_THIS, drmModeConnector *connector, drmModeRes *resources) {
+         drmModeModeInfo *mode = &connector->modes[i];
+ 
+         if (!SDL_memcmp(mode, &crtc->mode, sizeof(crtc->mode))) {
+-          mode_index = i;
+-          break;
++            mode_index = i;
++            break;
+         }
+     }
+ 
+     if (mode_index == -1) {
+-      ret = SDL_SetError("Failed to find index of mode attached to the CRTC.");
+-      goto cleanup;
++        int current_area, largest_area = 0;
++
++        /* Find the preferred mode or the highest resolution mode */
++        for (i = 0; i < connector->count_modes; i++) {
++            drmModeModeInfo *mode = &connector->modes[i];
++
++            if (mode->type & DRM_MODE_TYPE_PREFERRED) {
++                mode_index = i;
++                break;
++            }
++
++            current_area = mode->hdisplay * mode->vdisplay;
++            if (current_area > largest_area) {
++                mode_index = i;
++                largest_area = current_area;
++            }
++        }
++        if (mode_index != -1) {
++            crtc->mode = connector->modes[mode_index];
++        }
++    }
++
++    if (mode_index == -1) {
++        ret = SDL_SetError("Failed to find index of mode attached to the CRTC.");
++        goto cleanup;
+     }
+ 
+     /*********************************************/
+-- 
+2.25.1
+