@@ -1354,14 +1354,14 @@ int drm_fb_helper_set_par(struct fb_info *info)
}
EXPORT_SYMBOL(drm_fb_helper_set_par);
-static void pan_set(struct drm_fb_helper *fb_helper, int x, int y)
+static void pan_set(struct drm_fb_helper *fb_helper, int dx, int dy)
{
struct drm_mode_set *mode_set;
mutex_lock(&fb_helper->client.modeset_mutex);
drm_client_for_each_modeset(mode_set, &fb_helper->client) {
- mode_set->x = x;
- mode_set->y = y;
+ mode_set->x += dx;
+ mode_set->y += dy;
}
mutex_unlock(&fb_helper->client.modeset_mutex);
}
@@ -1370,16 +1370,18 @@ static int pan_display_atomic(struct fb_var_screeninfo *var,
struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
- int ret;
+ int ret, dx, dy;
- pan_set(fb_helper, var->xoffset, var->yoffset);
+ dx = var->xoffset - info->var.xoffset;
+ dy = var->yoffset - info->var.yoffset;
+ pan_set(fb_helper, dx, dy);
ret = drm_client_modeset_commit_locked(&fb_helper->client);
if (!ret) {
info->var.xoffset = var->xoffset;
info->var.yoffset = var->yoffset;
} else
- pan_set(fb_helper, info->var.xoffset, info->var.yoffset);
+ pan_set(fb_helper, -dx, -dy);
return ret;
}
Tiled displays have a different x/y offset to begin with. Instead of attempting to remember this, just apply a delta instead. Hope this works.. Signed-off-by: Maarten Lankhorst <dev@lankhorst.se> --- drivers/gpu/drm/drm_fb_helper.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)