change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/include/drm/drm_simple_kms_helper.h
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@@ -1,10 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * Copyright (C) 2016 Noralf Trønnes
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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  */
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 #ifndef __LINUX_DRM_SIMPLE_KMS_HELPER_H
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@@ -53,7 +49,7 @@
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 	 *
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 	 * drm_mode_status Enum
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 	 */
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-	enum drm_mode_status (*mode_valid)(struct drm_crtc *crtc,
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+	enum drm_mode_status (*mode_valid)(struct drm_simple_display_pipe *pipe,
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 					   const struct drm_display_mode *mode);
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 	/**
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@@ -104,8 +100,11 @@
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 	 * This is the function drivers should submit the
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 	 * &drm_pending_vblank_event from. Using either
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 	 * drm_crtc_arm_vblank_event(), when the driver supports vblank
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-	 * interrupt handling, or drm_crtc_send_vblank_event() directly in case
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-	 * the hardware lacks vblank support entirely.
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+	 * interrupt handling, or drm_crtc_send_vblank_event() for more
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+	 * complex case. In case the hardware lacks vblank support entirely,
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+	 * drivers can set &struct drm_crtc_state.no_vblank in
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+	 * &struct drm_simple_display_pipe_funcs.check and let DRM's
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+	 * atomic helper fake a vblank event.
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 	 */
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 	void (*update)(struct drm_simple_display_pipe *pipe,
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 		       struct drm_plane_state *old_plane_state);
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@@ -182,4 +181,8 @@
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 			const uint64_t *format_modifiers,
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 			struct drm_connector *connector);
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+int drm_simple_encoder_init(struct drm_device *dev,
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+			    struct drm_encoder *encoder,
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+			    int encoder_type);
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+
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 #endif /* __LINUX_DRM_SIMPLE_KMS_HELPER_H */