linux-toradex.git/include/drm/drm_simple_kms_helper.h, branch v5.18-rc5

drm/simple-kms: Support custom CRTC state

2021-08-08T18:14:08+00:00

Simple KMS helpers already support custom state for planes. Extend the
helpers to support custom CRTC state as well. Drivers can set the reset,
duplicate and destroy callbacks for the display pipeline's CRTC state
and inherit from struct drm_crtc_state by embedding an instance.

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20210714142240.21979-12-tzimmermann@suse.de

drm/simple-helper: drm_gem_simple_display_pipe_prepare_fb as default

2021-06-24T13:39:46+00:00

It's tedious to review this all the time, and my audit showed that
arcpgu actually forgot to set this.

Make this the default and stop worrying.

Again I sprinkled WARN_ON_ONCE on top to make sure we don't have
strange combinations of hooks: cleanup_fb without prepare_fb doesn't
make sense, and since simpler drivers are all new they better be GEM
based drivers.

v2: Warn and bail when it's _not_ a GEM driver (Noralf)

v3: It's neither ... nor, not not (Sam)

Acked-by: Sam Ravnborg 
Cc: Sam Ravnborg 
Cc: Noralf Trønnes 
Acked-by: Noralf Trønnes 
Signed-off-by: Daniel Vetter 
Cc: Maarten Lankhorst 
Cc: Maxime Ripard 
Cc: Thomas Zimmermann 
Cc: David Airlie 
Cc: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20210623162456.3373469-1-daniel.vetter@ffwll.ch

drm/gem: Move drm_gem_fb_prepare_fb() to GEM atomic helpers

2021-02-23T07:54:22+00:00

The function drm_gem_fb_prepare_fb() is a helper for atomic modesetting,
but currently located next to framebuffer helpers. Move it to GEM atomic
helpers, rename it slightly and adopt the drivers. Same for the rsp
simple-pipe helper.

Compile-tested with x86-64, aarch64 and arm. The patch is fairly large,
but there are no functional changes.

v3:
	* remove out-comented line in drm_gem_framebuffer_helper.h
	  (Maxime)
v2:
	* rename to drm_gem_plane_helper_prepare_fb() (Daniel)
	* add tutorial-style documentation

Signed-off-by: Thomas Zimmermann 
Acked-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20210222141756.7864-1-tzimmermann@suse.de

drm/simple-kms: Add plane-state helpers

2021-02-08T11:59:59+00:00

Just like regular plane-state helpers, drivers can use these new
callbacks to create and destroy private plane state.

v2:
	* make duplicate_state interface compatible with
	  struct drm_plane_funcs

Signed-off-by: Thomas Zimmermann 
Tested-by: Gerd Hoffmann 
Acked-by: Gerd Hoffmann 
Link: https://patchwork.freedesktop.org/patch/msgid/20210208115538.6430-2-tzimmermann@suse.de

drm/simple_kms_helper: add drmm_simple_encoder_alloc()

2021-01-04T11:59:33+00:00

Add an alternative to drm_simple_encoder_init() that allocates and
initializes a simple encoder and registers drm_encoder_cleanup() with
drmm_add_action_or_reset().

Signed-off-by: Philipp Zabel 
Reviewed-by: Laurent Pinchart 
Reviewed-by: Daniel Vetter

drm/simple-kms: Add drm_simple_encoder_{init,create}()

2020-03-02T08:22:35+00:00

This patch makes the internal encoder implementation of the simple
KMS helpers available to drivers.

These simple-encoder helpers initialize an encoder with an empty
implementation. This covers the requirements of most of the existing
DRM drivers. A call to drm_simple_encoder_create() allocates and
initializes an encoder instance, a call to drm_simple_encoder_init()
initializes a pre-allocated instance.

v3:
	* remove drm_simple_encoder_create(); not required yet
	* provide more precise documentation
v2:
	* move simple encoder to KMS helpers
	* remove name argument; simplifies implementation
	* don't allocate with devm_ interfaces; unsafe with DRM

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Sam Ravnborg 
Link: https://patchwork.freedesktop.org/patch/msgid/20200228081828.18463-2-tzimmermann@suse.de

drm: Initialize struct drm_crtc_state.no_vblank from device settings

2020-01-30T07:57:12+00:00

At the end of a commit, atomic helpers can generate a fake VBLANK event
automatically. Originally implemented for writeback connectors, the
functionality can be used by any driver and/or hardware without proper
VBLANK interrupt.

The patch updates the documentation to make this behaviour official:
settings struct drm_crtc_state.no_vblank to true enables automatic
generation of fake VBLANK events.

The new interface drm_dev_has_vblank() returns true if vblanking has
been initialized for a device, or false otherwise. Atomic helpers use
this function when initializing no_vblank in the CRTC state in
drm_atomic_helper_check_modeset(). If vblanking has been initialized
for a device, no_blank is disabled. Otherwise it's enabled. Hence,
atomic helpers will automatically send out fake VBLANK events with any
driver that did not initialize vblanking.

v5:
	* more precise documentation and commit message
v4:
	* replace drm_crtc_has_vblank() with drm_dev_has_vblank()
	* add drm_dev_has_vblank() in this patch
	* move driver changes into separate patches
v3:
	* squash all related changes patches into this patch

Signed-off-by: Thomas Zimmermann 
Acked-by: Gerd Hoffmann 
Reviewed-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20200129120531.6891-2-tzimmermann@suse.de

drm/simple-kms: Standardize arguments for callbacks

2019-10-24T11:55:56+00:00

Passing the wrong type feels icky, everywhere else we use the pipe as
the first parameter. Spotted while discussing patches with Thomas
Zimmermann.

v2: Make xen compile correctly

Acked-By: Thomas Zimmermann  (v1)
Cc: Thomas Zimmermann 
Cc: Noralf Trønnes 
Cc: Gerd Hoffmann 
Cc: Eric Anholt 
Cc: Emil Velikov 
Cc: virtualization@lists.linux-foundation.org
Cc: Linus Walleij 
Reviewed-by: Linus Walleij 
Signed-off-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20191023101256.20509-1-daniel.vetter@ffwll.ch

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s):

  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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

drm: Move simple_display_pipe prepare_fb helper into gem fb helpers

2018-04-24T11:57:22+00:00

There's nothing tinydrm specific to this, and there's a few more
copies of the same in various other drivers.

Signed-off-by: Daniel Vetter 
Cc: Gustavo Padovan 
Cc: Maarten Lankhorst 
Cc: Sean Paul 
Cc: David Airlie 
Cc: David Lechner 
Cc: "Noralf Trønnes" 
Cc: Daniel Vetter 
Cc: Shawn Guo 
Cc: Neil Armstrong 
Cc: Daniel Stone 
Cc: Haneen Mohammed 
Cc: Ben Widawsky 
Cc: "Ville Syrjälä" 
Reviewed-by: Oleksandr Andrushchenko 
Acked-by: David Lechner 
Reviewed-by: Noralf Trønnes 
Link: https://patchwork.freedesktop.org/patch/msgid/20180405154449.23038-3-daniel.vetter@ffwll.ch