From 40275dc4edb49d7ed543eb847f618dc12e5a024c Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 20 Feb 2018 08:28:59 +0100 Subject: drm: simple_kms_helper: Add mode_valid() callback support The PL111 needs to filter valid modes based on memory bandwidth. I guess it is a pretty simple operation, so we can still claim the DRM KMS helper pipeline is simple after adding this (optional) vtable callback. Reviewed-by: Eric Anholt Reviewed-by: Daniel Vetter Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20180220072859.3386-1-linus.walleij@linaro.org --- include/drm/drm_simple_kms_helper.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'include/drm') diff --git a/include/drm/drm_simple_kms_helper.h b/include/drm/drm_simple_kms_helper.h index 6d9adbb46293..d9e4c3c3f009 100644 --- a/include/drm/drm_simple_kms_helper.h +++ b/include/drm/drm_simple_kms_helper.h @@ -21,6 +21,20 @@ struct drm_simple_display_pipe; * display pipeline */ struct drm_simple_display_pipe_funcs { + /** + * @mode_valid: + * + * This function is called to filter out valid modes from the + * suggestions suggested by the bridge or display. This optional + * hook is passed in when initializing the pipeline. + * + * RETURNS: + * + * drm_mode_status Enum + */ + enum drm_mode_status (*mode_valid)(struct drm_crtc *crtc, + const struct drm_display_mode *mode); + /** * @enable: * -- cgit v1.2.3