plymouth/plymouth-only_use_fb_for_cirrus_bochs.patch
Cliff Zhao 03826f648a Accepting request 889267 from home:qzhao:branches:Base:System
Pickup plymouth-only_use_fb_for_cirrus_bochs.patch: Currently our kernel hardware support need this fix, and boo#1172028 will be fix seperately (bnc#888590 boo#1172028 bsc#1181913).

OBS-URL: https://build.opensuse.org/request/show/889267
OBS-URL: https://build.opensuse.org/package/show/Base:System/plymouth?expand=0&rev=298
2021-04-29 11:05:32 +00:00

48 lines
2.8 KiB
Diff

From: Fabian Vogt <fvogt@suse.com>
Subject: force fb for cirrus and bochs, force drm otherwise
References: bsc#888590, bsc#980750
DRM does not work well with cirrus and bochs (no display) but the framebuffer driver
prevents DRM drivers from loading.
As we need to support cirrus for libvirt and bochs for QEMU, we cannot just remove support for frame-buffer.
Index: plymouth-0.9.3+git20180807.7663b0c/src/libply-splash-core/ply-device-manager.c
===================================================================
--- plymouth-0.9.3+git20180807.7663b0c.orig/src/libply-splash-core/ply-device-manager.c 2018-08-07 17:41:15.000000000 +0200
+++ plymouth-0.9.3+git20180807.7663b0c/src/libply-splash-core/ply-device-manager.c 2018-08-17 19:58:41.178821647 +0200
@@ -228,13 +228,33 @@ create_devices_for_udev_device (ply_devi
subsystem = udev_device_get_subsystem (device);
ply_trace ("device subsystem is %s", subsystem);
+ const char *card_vendor = udev_device_get_sysattr_value (device, "device/vendor");
+ const char *card_device = udev_device_get_sysattr_value (device, "device/device");
+ bool use_fb = false;
+ if (card_vendor) {
+ /* Cirrus */
+ if (strcmp ("0x1013", card_vendor) == 0)
+ use_fb = true;
+ /* "Technical Corp", also used by bochs */
+ else if (strcmp ("0x1234", card_vendor) == 0)
+ use_fb = strcmp("0x1111", card_device) == 0;
+ }
+
if (subsystem != NULL && strcmp (subsystem, SUBSYSTEM_DRM) == 0) {
ply_trace ("found DRM device %s", device_path);
renderer_type = PLY_RENDERER_TYPE_DRM;
+ if (use_fb) {
+ ply_trace ("forcing use of framebuffer for cirrusdrmfb");
+ renderer_type = PLY_RENDERER_TYPE_NONE;
+ }
} else if (strcmp (subsystem, SUBSYSTEM_FRAME_BUFFER) == 0) {
ply_trace ("found frame buffer device %s", device_path);
- if (!fb_device_has_drm_device (manager, device))
+ if (use_fb) {
renderer_type = PLY_RENDERER_TYPE_FRAME_BUFFER;
+ }
+ else if (!fb_device_has_drm_device (manager, device)) {
+ ply_trace ("avoiding use of framebuffer to not block DRM drivers from working");
+ }
else
ply_trace ("ignoring, since there's a DRM device associated with it");
}