diff options
| author | Maarten Lankhorst <dev@lankhorst.se> | 2025-01-16 15:28:24 +0100 |
|---|---|---|
| committer | Maarten Lankhorst <dev@lankhorst.se> | 2025-01-21 11:39:34 +0100 |
| commit | f4a9dd57e549a17a7dac1c1defec26abd7e5c2d4 (patch) | |
| tree | 9f1bd17a3f1e9444cf7c4a4fe348fe051f81dace /drivers/gpu/drm/drm_fb_helper.c | |
| parent | ef84aee151bd6c2c9223c8b430cae21d57b5e1c1 (diff) | |
drm/modeset: Handle tiled displays in pan_display_atomic.
Tiled displays have a different x/y offset to begin with. Instead of
attempting to remember this, just apply a delta instead.
This fixes the first tile being duplicated on other tiles when vt
switching.
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20250116142825.3933-1-dev@lankhorst.se
Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
Cc: <stable@vger.kernel.org>
Diffstat (limited to 'drivers/gpu/drm/drm_fb_helper.c')
| -rw-r--r-- | drivers/gpu/drm/drm_fb_helper.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index c9008113111b..fb3614a7ba44 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -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; } |