mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-15 16:24:13 +08:00
bcd2ba02a4
Like the atomic update hook it's wrapping, the plane_state is the old one, and the new one is in plane->state. Both msxfb and tinydrm use it correctly, but I mistook it for the new state in pl111 due to its naming. Signed-off-by: Eric Anholt <eric@anholt.net> Link: http://patchwork.freedesktop.org/patch/msgid/20170320233615.5242-3-eric@anholt.net Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
128 lines
4.0 KiB
C
128 lines
4.0 KiB
C
/*
|
|
* Copyright (C) 2016 Noralf Trønnes
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef __LINUX_DRM_SIMPLE_KMS_HELPER_H
|
|
#define __LINUX_DRM_SIMPLE_KMS_HELPER_H
|
|
|
|
#include <drm/drm_crtc.h>
|
|
#include <drm/drm_encoder.h>
|
|
#include <drm/drm_plane.h>
|
|
|
|
struct drm_simple_display_pipe;
|
|
|
|
/**
|
|
* struct drm_simple_display_pipe_funcs - helper operations for a simple
|
|
* display pipeline
|
|
*/
|
|
struct drm_simple_display_pipe_funcs {
|
|
/**
|
|
* @enable:
|
|
*
|
|
* This function should be used to enable the pipeline.
|
|
* It is called when the underlying crtc is enabled.
|
|
* This hook is optional.
|
|
*/
|
|
void (*enable)(struct drm_simple_display_pipe *pipe,
|
|
struct drm_crtc_state *crtc_state);
|
|
/**
|
|
* @disable:
|
|
*
|
|
* This function should be used to disable the pipeline.
|
|
* It is called when the underlying crtc is disabled.
|
|
* This hook is optional.
|
|
*/
|
|
void (*disable)(struct drm_simple_display_pipe *pipe);
|
|
|
|
/**
|
|
* @check:
|
|
*
|
|
* This function is called in the check phase of an atomic update,
|
|
* specifically when the underlying plane is checked.
|
|
* The simple display pipeline helpers already check that the plane is
|
|
* not scaled, fills the entire visible area and is always enabled
|
|
* when the crtc is also enabled.
|
|
* This hook is optional.
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success, -EINVAL if the state or the transition can't be
|
|
* supported, -ENOMEM on memory allocation failure and -EDEADLK if an
|
|
* attempt to obtain another state object ran into a &drm_modeset_lock
|
|
* deadlock.
|
|
*/
|
|
int (*check)(struct drm_simple_display_pipe *pipe,
|
|
struct drm_plane_state *plane_state,
|
|
struct drm_crtc_state *crtc_state);
|
|
/**
|
|
* @update:
|
|
*
|
|
* This function is called when the underlying plane state is updated.
|
|
* This hook is optional.
|
|
*
|
|
* This is the function drivers should submit the
|
|
* &drm_pending_vblank_event from. Using either
|
|
* drm_crtc_arm_vblank_event(), when the driver supports vblank
|
|
* interrupt handling, or drm_crtc_send_vblank_event() directly in case
|
|
* the hardware lacks vblank support entirely.
|
|
*/
|
|
void (*update)(struct drm_simple_display_pipe *pipe,
|
|
struct drm_plane_state *old_plane_state);
|
|
|
|
/**
|
|
* @prepare_fb:
|
|
*
|
|
* Optional, called by &drm_plane_helper_funcs.prepare_fb. Please read
|
|
* the documentation for the &drm_plane_helper_funcs.prepare_fb hook for
|
|
* more details.
|
|
*/
|
|
int (*prepare_fb)(struct drm_simple_display_pipe *pipe,
|
|
struct drm_plane_state *plane_state);
|
|
|
|
/**
|
|
* @cleanup_fb:
|
|
*
|
|
* Optional, called by &drm_plane_helper_funcs.cleanup_fb. Please read
|
|
* the documentation for the &drm_plane_helper_funcs.cleanup_fb hook for
|
|
* more details.
|
|
*/
|
|
void (*cleanup_fb)(struct drm_simple_display_pipe *pipe,
|
|
struct drm_plane_state *plane_state);
|
|
};
|
|
|
|
/**
|
|
* struct drm_simple_display_pipe - simple display pipeline
|
|
* @crtc: CRTC control structure
|
|
* @plane: Plane control structure
|
|
* @encoder: Encoder control structure
|
|
* @connector: Connector control structure
|
|
* @funcs: Pipeline control functions (optional)
|
|
*
|
|
* Simple display pipeline with plane, crtc and encoder collapsed into one
|
|
* entity. It should be initialized by calling drm_simple_display_pipe_init().
|
|
*/
|
|
struct drm_simple_display_pipe {
|
|
struct drm_crtc crtc;
|
|
struct drm_plane plane;
|
|
struct drm_encoder encoder;
|
|
struct drm_connector *connector;
|
|
|
|
const struct drm_simple_display_pipe_funcs *funcs;
|
|
};
|
|
|
|
int drm_simple_display_pipe_attach_bridge(struct drm_simple_display_pipe *pipe,
|
|
struct drm_bridge *bridge);
|
|
|
|
int drm_simple_display_pipe_init(struct drm_device *dev,
|
|
struct drm_simple_display_pipe *pipe,
|
|
const struct drm_simple_display_pipe_funcs *funcs,
|
|
const uint32_t *formats, unsigned int format_count,
|
|
struct drm_connector *connector);
|
|
|
|
#endif /* __LINUX_DRM_SIMPLE_KMS_HELPER_H */
|