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Merge tag 'topic/atomic-helpers-2014-11-09' of git://anongit.freedesktop.org/drm-intel into drm-next

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So here's my atomic series, finally all debugged&reviewed. Sean Paul has
done a full detailed pass over it all, and a lot of other people have
commented and provided feedback on some parts. Rob Clark also converted
msm over the w/e and seems happy. The only small thing is that Rob wants
to export the wait_for_vblank, which imo makes sense. Since there's other
stuff still to do I think we should apply Rob's patch (once it has grown
appropriate kerneldoc) later on top of this.

This is just the core<->driver interface plus a big pile of helpers. Short
recap of the main ideas:

- There are essentially three helper libraries in this patch set:

  * Transitional helpers to use the new plane callbacks for legacy plane
    updates and in the crtc helper's ->mode_set callback. These helpers are
    only temporarily used to convert drivers to atomic, but they allow a
    nice separation between changing the driver backend and switching to
    the atomic commit logic.

  * Legacy helpers to implement all the legacy driver entry points
    (page_flip, set_config, plane vfuncs) on top of the new atomic driver
    interface. These are completely driver agnostic. The reason for having
    the legacy support as helpers is that drivers can switch step-by-step.
    And they could e.g. even keep the legacy page_flip code around for some
    old platforms where converting to full-blown atomic isn't worth it.

  * Atomic helpers which implement the various new ->atomic_* driver
    interfaces in terms of the revised crtc helper and new plane helper
    hooks.

- The revised crtc helper implemenation essentially implements all the
  lessons learned in the i915 modeset rework (when using the atomic helpers
  only):

  * Enable/disable sequence for a given config are always the same and
    callbacks are always called in the same order. This contrast starkly
    with the crtc helpers, where the sequence of operations is heavily
    dependent on the previous config.

    One corollary of this is that if the configuration of a crtc only
    partially changes (e.g. a connector moves in a cloned config) the
    helper code will still disable/enable the full display pipeline. This
    is the only way to ensure that the enable/disable sequence is always
    the same.

  * It won't call disable or enable hooks more than once any more because
    it lost track of state, thanks to the atomic state tracking. And if
    drivers implement the ->reset hook properly (by either resetting the hw
    or reading out the hw state into the atomic structures) this even
    extends to the hardware state. So no more disable-me-harder kind of
    nonsense.

  * The only thing missing is the hw state readout/cross-check support, but
    if drivers have hw state readout support in their ->reset handlers it's
    simple to extend that to cross-check the hw state.

  * The crtc->mode_set callback is gone and its replacement only sets crtc
    timings and no longer updates the primary plane state. This way we can
    finally implement primary planes properly.

- The new plane helpers should be suitable enough for pretty much
  everything, and a perfect fit for hardware with GO bits. Even if they
  don't fit the atomic helper library is rather flexible and exports all
  the functions for the individual steps to drivers. So drivers can pick
  what matches and implement their own magic for everything else.

- A big difference compared to all previous atomic series is that this one
  doesn't implement async commit in a generic way. Imo driver requirements
  for that are too diverse to create anything reasonable sane which would
  actually work on a reasonable amount of different drivers. Also, we've
  never had a helper library for page_flips even, so it's really hard to
  know what might work and what's stupid without a bit of experience in the form
  of a few driver implementations.

  I think with the current flexibility for drivers to pick individual
  stages and existing helpers like drm_flip_queue it's rather easy though
  to implement proper async commit.

- There's a few other differences of minor importance to earlier atomic
  series:

  * Common/generic properties are parsed in the callers/core and not in
    drivers, and passed to drivers by directly setting the right members in
    atomic state structures. That greatly simplifies all the transitional
    and legacy helpers an removes a lot of boilerplate code.

  * There's no crazy trylock mode used for the async commit since these
    helpers don't do async commit. A simple ordered flip queue of atomic
    state updates should be sufficient for preventing concurrent hw access
    anyway, as long as synchronous updates stall correctly with e.g.
    flush_work_queue or similar function. Abusing locks to enforce ordering
    isn't a good idea imo anyway.

  * These helpers reuse the existing ->mode_fixup hooks in the atomic_check
    callback. Which means that drivers need to adapat and move a lot less code
    into their atomic_check callbacks.

Now this isn't everything needed in the drm core and helpers for full
atomic support. But it's enough to start with converting drivers, and
except for actually testing multiplane and multicrtc updates also enough to
implement full atomic updates. Still missing are:

- Per-plane locking. Since these helpers here encapsulate the locking
  completely this should be fairly easy to implement.

- fbdev support for atomic_check/commit, so that multi-pipe finally works
  sanely in fbcon.

- Adding and decoding shared/core properties. That just needs to be rebased
  from Rob's latest patch series, with minor adjustments so that the
  decoding happens in the core instead of in drivers.

- Actually adding the atomic ioctl. Again just rebasing Rob's latest patch
  should be all that's needed.

- Resolving how to deal with DPMS in atomic. Atomic is a good excuse to fix up
  the crazy semantics dpms currently has. I'm floating an RFC about this topic
  already.

- Finally I couldn't test connector/encoder stealing properly since my test
  vehicle here doesn't allow a connector on different crtcs. So drivers
  which support this might see some surprises in that area. There is no semantic
  change though in how encoder stealing and assignment works (or at least no
  intended one), so I think the risk is minimal.

As just mentioned I've done a fake conversion of an existing driver using
crtc helpers to debug the helper code and validate the smooth transition
approach. And that smooth transition was the really big motivation for
this. It seems to actually work and consists of 3 phases:

Phase 1: Rework driver backend for crtc/plane helpers

The requirement here is that universal plane support is already implement. If
universal plane support isn't implement yet it might be better though to just do
it as part of this phase, directly using the new plane helpers. There are two
big things to do:

- Split up the existing ->update/disable_plane hooks into check/commit
  hooks and extract the crtc-wide prep/flush parts (like setting/clearing
  GO bits).

- The other big change is to split the crtc->mode_set hook into the plane
  update (done using the plane helpers) and the crtc setup in a new
  ->mode_set_nofb hook.

When phase 1 is complete the driver implements all the new callbacks which
push the software state into hardware, but still using all the legacy entry
points and crtc helpers. The transitional helpers serve as impendance
mismatch here.

Phase 2: Rework state handling

This consists of rolling out the state handling helpers for planes, crtcs
and connectors and reviewing all ->mode_fixup and similar hooks to make
sure they don't depend upon implicit global state which might change in the
atomic world. Any such code must be moved into ->atomic_check functions which
just rely on the free-standing atomic state update structures.

This phase also adds a few small pieces of fixup code to make sure the
atomic state doesn't get out of sync in the legacy driver callbacks.

Phase 3: Roll out atomic support

Now it's just about replacing vfuncs with the ones provided by the helper
and filling out the small missing pieces (like atomic_check logic or async
commit support needed for page_flips). Due to the prep work in phase 1 no
changes to the driver backend functions should be required, and because of
the prep work in phase 2 atomic implementations can be rolled out
step-by-step. So if async commit ins't implemented yet page_flip can be
implemented with the legacy functions without wreaking havoc in the other
operations.

* tag 'topic/atomic-helpers-2014-11-09' of git://anongit.freedesktop.org/drm-intel:
  drm/atomic: Refcounting for plane_state->fb
  drm: Docbook integration and over sections for all the new helpers
  drm/atomic-helpers: functions for state duplicate/destroy/reset
  drm/atomic-helper: implement ->page_flip
  drm/atomic-helpers: document how to implement async commit
  drm/atomic: Integrate fence support
  drm/atomic-helper: implementatations for legacy interfaces
  drm: Atomic crtc/connector updates using crtc/plane helper interfaces
  drm/crtc-helper: Transitional functions using atomic plane helpers
  drm/plane-helper: transitional atomic plane helpers
  drm: Add atomic/plane helpers
  drm: Global atomic state handling
  drm: Add atomic driver interface definitions for objects
  drm/modeset_lock: document trylock_only in kerneldoc
  drm: fixup kerneldoc in drm_crtc.h
  drm: Pull drm_crtc.h into the kerneldoc template
  drm: Move drm_crtc_init from drm_crtc.h to drm_plane_helper.h
This commit is contained in:
Dave Airlie 2014-11-10 09:59:16 +10:00
commit 122387a53e
32 changed files with 3344 additions and 36 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
Documentation/DocBook/drm.tmpl
View File

@ -994,6 +994,10 @@ int max_width, max_height;</synopsis>
<title>Display Modes Function Reference</title>
!Iinclude/drm/drm_modes.h
!Edrivers/gpu/drm/drm_modes.c
</sect2>
<sect2>
<title>Atomic Mode Setting Function Reference</title>
!Edrivers/gpu/drm/drm_atomic.c
</sect2>
<sect2>
<title>Frame Buffer Creation</title>
@ -1825,6 +1829,10 @@ void intel_crt_init(struct drm_device *dev)
<sect2>
<title>KMS API Functions</title>
!Edrivers/gpu/drm/drm_crtc.c
</sect2>
<sect2>
<title>KMS Data Structures</title>
!Iinclude/drm/drm_crtc.h
</sect2>
<sect2>
<title>KMS Locking</title>
@ -2315,9 +2323,26 @@ void intel_crt_init(struct drm_device *dev)
</listitem>
</itemizedlist>
</sect2>
<sect2>
<title>Atomic Modeset Helper Functions Reference</title>
<sect3>
<title>Overview</title>
!Pdrivers/gpu/drm/drm_atomic_helper.c overview
</sect3>
<sect3>
<title>Implementing Asynchronous Atomic Commit</title>
!Pdrivers/gpu/drm/drm_atomic_helper.c implementing async commit
</sect3>
<sect3>
<title>Atomic State Reset and Initialization</title>
!Pdrivers/gpu/drm/drm_atomic_helper.c atomic state reset and initialization
</sect3>
!Edrivers/gpu/drm/drm_atomic_helper.c
</sect2>
<sect2>
<title>Modeset Helper Functions Reference</title>
!Edrivers/gpu/drm/drm_crtc_helper.c
!Pdrivers/gpu/drm/drm_crtc_helper.c overview
</sect2>
<sect2>
<title>Output Probing Helper Functions Reference</title>
@ -2371,7 +2396,8 @@ void intel_crt_init(struct drm_device *dev)
</sect2>
<sect2>
<title id="drm-kms-planehelpers">Plane Helper Reference</title>
!Edrivers/gpu/drm/drm_plane_helper.c Plane Helpers
!Edrivers/gpu/drm/drm_plane_helper.c
!Pdrivers/gpu/drm/drm_plane_helper.c overview
</sect2>
</sect1>

4
drivers/gpu/drm/Makefile
View File

@ -14,7 +14,7 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
drm_info.o drm_debugfs.o drm_encoder_slave.o \
drm_trace_points.o drm_global.o drm_prime.o \
drm_rect.o drm_vma_manager.o drm_flip_work.o \
drm_modeset_lock.o
drm_modeset_lock.o drm_atomic.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
drm-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_gem_cma_helper.o
@ -23,7 +23,7 @@ drm-$(CONFIG_DRM_PANEL) += drm_panel.o
drm-$(CONFIG_OF) += drm_of.o
drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_probe_helper.o \
drm_plane_helper.o drm_dp_mst_topology.o
drm_plane_helper.o drm_dp_mst_topology.o drm_atomic_helper.o
drm_kms_helper-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o
drm_kms_helper-$(CONFIG_DRM_KMS_FB_HELPER) += drm_fb_helper.o
drm_kms_helper-$(CONFIG_DRM_KMS_CMA_HELPER) += drm_fb_cma_helper.o

1
drivers/gpu/drm/armada/armada_crtc.c
View File

@ -12,6 +12,7 @@
#include <linux/platform_device.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include "armada_crtc.h"
#include "armada_drm.h"
#include "armada_fb.h"

1
drivers/gpu/drm/ast/ast_mode.c
View File

@ -31,6 +31,7 @@
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include "ast_drv.h"
#include "ast_tables.h"

1
drivers/gpu/drm/bochs/bochs_kms.c
View File

@ -6,6 +6,7 @@
*/
#include "bochs.h"
#include <drm/drm_plane_helper.h>
static int defx = 1024;
static int defy = 768;

1
drivers/gpu/drm/cirrus/cirrus_mode.c
View File

@ -16,6 +16,7 @@
*/
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include <video/cirrus.h>

628
drivers/gpu/drm/drm_atomic.c Normal file
View File

@ -0,0 +1,628 @@
/*
* Copyright (C) 2014 Red Hat
* Copyright (C) 2014 Intel Corp.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Rob Clark <robdclark@gmail.com>
* Daniel Vetter <daniel.vetter@ffwll.ch>
*/
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_plane_helper.h>
static void kfree_state(struct drm_atomic_state *state)
{
kfree(state->connectors);
kfree(state->connector_states);
kfree(state->crtcs);
kfree(state->crtc_states);
kfree(state->planes);
kfree(state->plane_states);
kfree(state);
}
/**
* drm_atomic_state_alloc - allocate atomic state
* @dev: DRM device
*
* This allocates an empty atomic state to track updates.
*/
struct drm_atomic_state *
drm_atomic_state_alloc(struct drm_device *dev)
{
struct drm_atomic_state *state;
state = kzalloc(sizeof(*state), GFP_KERNEL);
if (!state)
return NULL;
state->crtcs = kcalloc(dev->mode_config.num_crtc,
sizeof(*state->crtcs), GFP_KERNEL);
if (!state->crtcs)
goto fail;
state->crtc_states = kcalloc(dev->mode_config.num_crtc,
sizeof(*state->crtc_states), GFP_KERNEL);
if (!state->crtc_states)
goto fail;
state->planes = kcalloc(dev->mode_config.num_total_plane,
sizeof(*state->planes), GFP_KERNEL);
if (!state->planes)
goto fail;
state->plane_states = kcalloc(dev->mode_config.num_total_plane,
sizeof(*state->plane_states), GFP_KERNEL);
if (!state->plane_states)
goto fail;
state->connectors = kcalloc(dev->mode_config.num_connector,
sizeof(*state->connectors),
GFP_KERNEL);
if (!state->connectors)
goto fail;
state->connector_states = kcalloc(dev->mode_config.num_connector,
sizeof(*state->connector_states),
GFP_KERNEL);
if (!state->connector_states)
goto fail;
state->dev = dev;
DRM_DEBUG_KMS("Allocate atomic state %p\n", state);
return state;
fail:
kfree_state(state);
return NULL;
}
EXPORT_SYMBOL(drm_atomic_state_alloc);
/**
* drm_atomic_state_clear - clear state object
* @state: atomic state
*
* When the w/w mutex algorithm detects a deadlock we need to back off and drop
* all locks. So someone else could sneak in and change the current modeset
* configuration. Which means that all the state assembled in @state is no
* longer an atomic update to the current state, but to some arbitrary earlier
* state. Which could break assumptions the driver's ->atomic_check likely
* relies on.
*
* Hence we must clear all cached state and completely start over, using this
* function.
*/
void drm_atomic_state_clear(struct drm_atomic_state *state)
{
struct drm_device *dev = state->dev;
int i;
DRM_DEBUG_KMS("Clearing atomic state %p\n", state);
for (i = 0; i < dev->mode_config.num_connector; i++) {
struct drm_connector *connector = state->connectors[i];
if (!connector)
continue;
connector->funcs->atomic_destroy_state(connector,
state->connector_states[i]);
}
for (i = 0; i < dev->mode_config.num_crtc; i++) {
struct drm_crtc *crtc = state->crtcs[i];
if (!crtc)
continue;
crtc->funcs->atomic_destroy_state(crtc,
state->crtc_states[i]);
}
for (i = 0; i < dev->mode_config.num_total_plane; i++) {
struct drm_plane *plane = state->planes[i];
if (!plane)
continue;
plane->funcs->atomic_destroy_state(plane,
state->plane_states[i]);
}
}
EXPORT_SYMBOL(drm_atomic_state_clear);
/**
* drm_atomic_state_free - free all memory for an atomic state
* @state: atomic state to deallocate
*
* This frees all memory associated with an atomic state, including all the
* per-object state for planes, crtcs and connectors.
*/
void drm_atomic_state_free(struct drm_atomic_state *state)
{
drm_atomic_state_clear(state);
DRM_DEBUG_KMS("Freeing atomic state %p\n", state);
kfree_state(state);
}
EXPORT_SYMBOL(drm_atomic_state_free);
/**
* drm_atomic_get_crtc_state - get crtc state
* @state: global atomic state object
* @crtc: crtc to get state object for
*
* This function returns the crtc state for the given crtc, allocating it if
* needed. It will also grab the relevant crtc lock to make sure that the state
* is consistent.
*
* Returns:
*
* Either the allocated state or the error code encoded into the pointer. When
* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
* entire atomic sequence must be restarted. All other errors are fatal.
*/
struct drm_crtc_state *
drm_atomic_get_crtc_state(struct drm_atomic_state *state,
struct drm_crtc *crtc)
{
int ret, index;
struct drm_crtc_state *crtc_state;
index = drm_crtc_index(crtc);
if (state->crtc_states[index])
return state->crtc_states[index];
ret = drm_modeset_lock(&crtc->mutex, state->acquire_ctx);
if (ret)
return ERR_PTR(ret);
crtc_state = crtc->funcs->atomic_duplicate_state(crtc);
if (!crtc_state)
return ERR_PTR(-ENOMEM);
state->crtc_states[index] = crtc_state;
state->crtcs[index] = crtc;
crtc_state->state = state;
DRM_DEBUG_KMS("Added [CRTC:%d] %p state to %p\n",
crtc->base.id, crtc_state, state);
return crtc_state;
}
EXPORT_SYMBOL(drm_atomic_get_crtc_state);
/**
* drm_atomic_get_plane_state - get plane state
* @state: global atomic state object
* @plane: plane to get state object for
*
* This function returns the plane state for the given plane, allocating it if
* needed. It will also grab the relevant plane lock to make sure that the state
* is consistent.
*
* Returns:
*
* Either the allocated state or the error code encoded into the pointer. When
* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
* entire atomic sequence must be restarted. All other errors are fatal.
*/
struct drm_plane_state *
drm_atomic_get_plane_state(struct drm_atomic_state *state,
struct drm_plane *plane)
{
int ret, index;
struct drm_plane_state *plane_state;
index = drm_plane_index(plane);
if (state->plane_states[index])
return state->plane_states[index];
/*
* TODO: We currently don't have per-plane mutexes. So instead of trying
* crazy tricks with deferring plane->crtc and hoping for the best just
* grab all crtc locks. Once we have per-plane locks we must update this
* to only take the plane mutex.
*/
ret = drm_modeset_lock_all_crtcs(state->dev, state->acquire_ctx);
if (ret)
return ERR_PTR(ret);
plane_state = plane->funcs->atomic_duplicate_state(plane);
if (!plane_state)
return ERR_PTR(-ENOMEM);
state->plane_states[index] = plane_state;
state->planes[index] = plane;
plane_state->state = state;
DRM_DEBUG_KMS("Added [PLANE:%d] %p state to %p\n",
plane->base.id, plane_state, state);
if (plane_state->crtc) {
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_crtc_state(state,
plane_state->crtc);
if (IS_ERR(crtc_state))
return ERR_CAST(crtc_state);
}
return plane_state;
}
EXPORT_SYMBOL(drm_atomic_get_plane_state);
/**
* drm_atomic_get_connector_state - get connector state
* @state: global atomic state object
* @connector: connector to get state object for
*
* This function returns the connector state for the given connector,
* allocating it if needed. It will also grab the relevant connector lock to
* make sure that the state is consistent.
*
* Returns:
*
* Either the allocated state or the error code encoded into the pointer. When
* the error is EDEADLK then the w/w mutex code has detected a deadlock and the
* entire atomic sequence must be restarted. All other errors are fatal.
*/
struct drm_connector_state *
drm_atomic_get_connector_state(struct drm_atomic_state *state,
struct drm_connector *connector)
{
int ret, index;
struct drm_mode_config *config = &connector->dev->mode_config;
struct drm_connector_state *connector_state;
index = drm_connector_index(connector);
if (state->connector_states[index])
return state->connector_states[index];
ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
if (ret)
return ERR_PTR(ret);
connector_state = connector->funcs->atomic_duplicate_state(connector);
if (!connector_state)
return ERR_PTR(-ENOMEM);
state->connector_states[index] = connector_state;
state->connectors[index] = connector;
connector_state->state = state;
DRM_DEBUG_KMS("Added [CONNECTOR:%d] %p state to %p\n",
connector->base.id, connector_state, state);
if (connector_state->crtc) {
struct drm_crtc_state *crtc_state;
crtc_state = drm_atomic_get_crtc_state(state,
connector_state->crtc);
if (IS_ERR(crtc_state))
return ERR_CAST(crtc_state);
}
return connector_state;
}
EXPORT_SYMBOL(drm_atomic_get_connector_state);
/**
* drm_atomic_set_crtc_for_plane - set crtc for plane
* @plane_state: atomic state object for the plane
* @crtc: crtc to use for the plane
*
* Changing the assigned crtc for a plane requires us to grab the lock and state
* for the new crtc, as needed. This function takes care of all these details
* besides updating the pointer in the state object itself.
*
* Returns:
* 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
* then the w/w mutex code has detected a deadlock and the entire atomic
* sequence must be restarted. All other errors are fatal.
*/
int
drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
struct drm_crtc *crtc)
{
struct drm_crtc_state *crtc_state;
if (crtc) {
crtc_state = drm_atomic_get_crtc_state(plane_state->state,
crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
}
plane_state->crtc = crtc;
if (crtc)
DRM_DEBUG_KMS("Link plane state %p to [CRTC:%d]\n",
plane_state, crtc->base.id);
else
DRM_DEBUG_KMS("Link plane state %p to [NOCRTC]\n", plane_state);
return 0;
}
EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
/**
* drm_atomic_set_fb_for_plane - set crtc for plane
* @plane_state: atomic state object for the plane
* @fb: fb to use for the plane
*
* Changing the assigned framebuffer for a plane requires us to grab a reference
* to the new fb and drop the reference to the old fb, if there is one. This
* function takes care of all these details besides updating the pointer in the
* state object itself.
*/
void
drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
struct drm_framebuffer *fb)
{
if (plane_state->fb)
drm_framebuffer_unreference(plane_state->fb);
if (fb)
drm_framebuffer_reference(fb);
plane_state->fb = fb;
if (fb)
DRM_DEBUG_KMS("Set [FB:%d] for plane state %p\n",
fb->base.id, plane_state);
else
DRM_DEBUG_KMS("Set [NOFB] for plane state %p\n", plane_state);
}
EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
/**
* drm_atomic_set_crtc_for_connector - set crtc for connector
* @conn_state: atomic state object for the connector
* @crtc: crtc to use for the connector
*
* Changing the assigned crtc for a connector requires us to grab the lock and
* state for the new crtc, as needed. This function takes care of all these
* details besides updating the pointer in the state object itself.
*
* Returns:
* 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
* then the w/w mutex code has detected a deadlock and the entire atomic
* sequence must be restarted. All other errors are fatal.
*/
int
drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
struct drm_crtc *crtc)
{
struct drm_crtc_state *crtc_state;
if (crtc) {
crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
}
conn_state->crtc = crtc;
if (crtc)
DRM_DEBUG_KMS("Link connector state %p to [CRTC:%d]\n",
conn_state, crtc->base.id);
else
DRM_DEBUG_KMS("Link connector state %p to [NOCRTC]\n",
conn_state);
return 0;
}
EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
/**
* drm_atomic_add_affected_connectors - add connectors for crtc
* @state: atomic state
* @crtc: DRM crtc
*
* This function walks the current configuration and adds all connectors
* currently using @crtc to the atomic configuration @state. Note that this
* function must acquire the connection mutex. This can potentially cause
* unneeded seralization if the update is just for the planes on one crtc. Hence
* drivers and helpers should only call this when really needed (e.g. when a
* full modeset needs to happen due to some change).
*
* Returns:
* 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
* then the w/w mutex code has detected a deadlock and the entire atomic
* sequence must be restarted. All other errors are fatal.
*/
int
drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
struct drm_crtc *crtc)
{
struct drm_mode_config *config = &state->dev->mode_config;
struct drm_connector *connector;
struct drm_connector_state *conn_state;
int ret;
ret = drm_modeset_lock(&config->connection_mutex, state->acquire_ctx);
if (ret)
return ret;
DRM_DEBUG_KMS("Adding all current connectors for [CRTC:%d] to %p\n",
crtc->base.id, state);
/*
* Changed connectors are already in @state, so only need to look at the
* current configuration.
*/
list_for_each_entry(connector, &config->connector_list, head) {
if (connector->state->crtc != crtc)
continue;
conn_state = drm_atomic_get_connector_state(state, connector);
if (IS_ERR(conn_state))
return PTR_ERR(conn_state);
}
return 0;
}
EXPORT_SYMBOL(drm_atomic_add_affected_connectors);
/**
* drm_atomic_connectors_for_crtc - count number of connected outputs
* @state: atomic state
* @crtc: DRM crtc
*
* This function counts all connectors which will be connected to @crtc
* according to @state. Useful to recompute the enable state for @crtc.
*/
int
drm_atomic_connectors_for_crtc(struct drm_atomic_state *state,
struct drm_crtc *crtc)
{
int nconnectors = state->dev->mode_config.num_connector;
int i, num_connected_connectors = 0;
for (i = 0; i < nconnectors; i++) {
struct drm_connector_state *conn_state;
conn_state = state->connector_states[i];
if (conn_state && conn_state->crtc == crtc)
num_connected_connectors++;
}
DRM_DEBUG_KMS("State %p has %i connectors for [CRTC:%d]\n",
state, num_connected_connectors, crtc->base.id);
return num_connected_connectors;
}
EXPORT_SYMBOL(drm_atomic_connectors_for_crtc);
/**
* drm_atomic_legacy_backoff - locking backoff for legacy ioctls
* @state: atomic state
*
* This function should be used by legacy entry points which don't understand
* -EDEADLK semantics. For simplicity this one will grab all modeset locks after
* the slowpath completed.
*/
void drm_atomic_legacy_backoff(struct drm_atomic_state *state)
{
int ret;
retry:
drm_modeset_backoff(state->acquire_ctx);
ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
state->acquire_ctx);
if (ret)
goto retry;
ret = drm_modeset_lock_all_crtcs(state->dev,
state->acquire_ctx);
if (ret)
goto retry;
}
EXPORT_SYMBOL(drm_atomic_legacy_backoff);
/**
* drm_atomic_check_only - check whether a given config would work
* @state: atomic configuration to check
*
* Note that this function can return -EDEADLK if the driver needed to acquire
* more locks but encountered a deadlock. The caller must then do the usual w/w
* backoff dance and restart. All other errors are fatal.
*
* Returns:
* 0 on success, negative error code on failure.
*/
int drm_atomic_check_only(struct drm_atomic_state *state)
{
struct drm_mode_config *config = &state->dev->mode_config;
DRM_DEBUG_KMS("checking %p\n", state);
if (config->funcs->atomic_check)
return config->funcs->atomic_check(state->dev, state);
else
return 0;
}
EXPORT_SYMBOL(drm_atomic_check_only);
/**
* drm_atomic_commit - commit configuration atomically
* @state: atomic configuration to check
*
* Note that this function can return -EDEADLK if the driver needed to acquire
* more locks but encountered a deadlock. The caller must then do the usual w/w
* backoff dance and restart. All other errors are fatal.
*
* Also note that on successful execution ownership of @state is transferred
* from the caller of this function to the function itself. The caller must not
* free or in any other way access @state. If the function fails then the caller
* must clean up @state itself.
*
* Returns:
* 0 on success, negative error code on failure.
*/
int drm_atomic_commit(struct drm_atomic_state *state)
{
struct drm_mode_config *config = &state->dev->mode_config;
int ret;
ret = drm_atomic_check_only(state);
if (ret)
return ret;
DRM_DEBUG_KMS("commiting %p\n", state);
return config->funcs->atomic_commit(state->dev, state, false);
}
EXPORT_SYMBOL(drm_atomic_commit);
/**
* drm_atomic_async_commit - atomic&async configuration commit
* @state: atomic configuration to check
*
* Note that this function can return -EDEADLK if the driver needed to acquire
* more locks but encountered a deadlock. The caller must then do the usual w/w
* backoff dance and restart. All other errors are fatal.
*
* Also note that on successful execution ownership of @state is transferred
* from the caller of this function to the function itself. The caller must not
* free or in any other way access @state. If the function fails then the caller
* must clean up @state itself.
*
* Returns:
* 0 on success, negative error code on failure.
*/
int drm_atomic_async_commit(struct drm_atomic_state *state)
{
struct drm_mode_config *config = &state->dev->mode_config;
int ret;
ret = drm_atomic_check_only(state);
if (ret)
return ret;
DRM_DEBUG_KMS("commiting %p asynchronously\n", state);
return config->funcs->atomic_commit(state->dev, state, true);
}
EXPORT_SYMBOL(drm_atomic_async_commit);

1906
drivers/gpu/drm/drm_atomic_helper.c Normal file
View File

File diff suppressed because it is too large Load Diff

132
drivers/gpu/drm/drm_crtc_helper.c
View File

@ -34,12 +34,35 @@
#include <linux/moduleparam.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_crtc.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_edid.h>
/**
* DOC: overview
*
* The CRTC modeset helper library provides a default set_config implementation
* in drm_crtc_helper_set_config(). Plus a few other convenience functions using
* the same callbacks which drivers can use to e.g. restore the modeset
* configuration on resume with drm_helper_resume_force_mode().
*
* The driver callbacks are mostly compatible with the atomic modeset helpers,
* except for the handling of the primary plane: Atomic helpers require that the
* primary plane is implemented as a real standalone plane and not directly tied
* to the CRTC state. For easier transition this library provides functions to
* implement the old semantics required by the CRTC helpers using the new plane
* and atomic helper callbacks.
*
* Drivers are strongly urged to convert to the atomic helpers (by way of first
* converting to the plane helpers). New drivers must not use these functions
* but need to implement the atomic interface instead, potentially using the
* atomic helpers for that.
*/
MODULE_AUTHOR("David Airlie, Jesse Barnes");
MODULE_DESCRIPTION("DRM KMS helper");
MODULE_LICENSE("GPL and additional rights");
@ -888,3 +911,112 @@ void drm_helper_resume_force_mode(struct drm_device *dev)
drm_modeset_unlock_all(dev);
}
EXPORT_SYMBOL(drm_helper_resume_force_mode);
/**
* drm_helper_crtc_mode_set - mode_set implementation for atomic plane helpers
* @crtc: DRM CRTC
* @mode: DRM display mode which userspace requested
* @adjusted_mode: DRM display mode adjusted by ->mode_fixup callbacks
* @x: x offset of the CRTC scanout area on the underlying framebuffer
* @y: y offset of the CRTC scanout area on the underlying framebuffer
* @old_fb: previous framebuffer
*
* This function implements a callback useable as the ->mode_set callback
* required by the crtc helpers. Besides the atomic plane helper functions for
* the primary plane the driver must also provide the ->mode_set_nofb callback
* to set up the crtc.
*
* This is a transitional helper useful for converting drivers to the atomic
* interfaces.
*/
int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode, int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_crtc_state *crtc_state;
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
int ret;
if (crtc->funcs->atomic_duplicate_state)
crtc_state = crtc->funcs->atomic_duplicate_state(crtc);
else if (crtc->state)
crtc_state = kmemdup(crtc->state, sizeof(*crtc_state),
GFP_KERNEL);
else
crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
if (!crtc_state)
return -ENOMEM;
crtc_state->enable = true;
crtc_state->planes_changed = true;
crtc_state->mode_changed = true;
drm_mode_copy(&crtc_state->mode, mode);
drm_mode_copy(&crtc_state->adjusted_mode, adjusted_mode);
if (crtc_funcs->atomic_check) {
ret = crtc_funcs->atomic_check(crtc, crtc_state);
if (ret) {
kfree(crtc_state);
return ret;
}
}
swap(crtc->state, crtc_state);
crtc_funcs->mode_set_nofb(crtc);
if (crtc_state) {
if (crtc->funcs->atomic_destroy_state)
crtc->funcs->atomic_destroy_state(crtc, crtc_state);
else
kfree(crtc_state);
}
return drm_helper_crtc_mode_set_base(crtc, x, y, old_fb);
}
EXPORT_SYMBOL(drm_helper_crtc_mode_set);
/**
* drm_helper_crtc_mode_set_base - mode_set_base implementation for atomic plane helpers
* @crtc: DRM CRTC
* @x: x offset of the CRTC scanout area on the underlying framebuffer
* @y: y offset of the CRTC scanout area on the underlying framebuffer
* @old_fb: previous framebuffer
*
* This function implements a callback useable as the ->mode_set_base used
* required by the crtc helpers. The driver must provide the atomic plane helper
* functions for the primary plane.
*
* This is a transitional helper useful for converting drivers to the atomic
* interfaces.
*/
int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_plane_state *plane_state;
struct drm_plane *plane = crtc->primary;
if (plane->funcs->atomic_duplicate_state)
plane_state = plane->funcs->atomic_duplicate_state(plane);
else if (plane->state)
plane_state = drm_atomic_helper_plane_duplicate_state(plane);
else
plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL);
if (!plane_state)
return -ENOMEM;
plane_state->crtc = crtc;
drm_atomic_set_fb_for_plane(plane_state, crtc->primary->fb);
plane_state->crtc_x = 0;
plane_state->crtc_y = 0;
plane_state->crtc_h = crtc->mode.vdisplay;
plane_state->crtc_w = crtc->mode.hdisplay;
plane_state->src_x = x << 16;
plane_state->src_y = y << 16;
plane_state->src_h = crtc->mode.vdisplay << 16;
plane_state->src_w = crtc->mode.hdisplay << 16;
return drm_plane_helper_commit(plane, plane_state, old_fb);
}
EXPORT_SYMBOL(drm_helper_crtc_mode_set_base);

198
drivers/gpu/drm/drm_plane_helper.c
View File

@ -27,10 +27,38 @@
#include <drm/drmP.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_rect.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_atomic.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_atomic_helper.h>
#define SUBPIXEL_MASK 0xffff
/**
* DOC: overview
*
* This helper library has two parts. The first part has support to implement
* primary plane support on top of the normal CRTC configuration interface.
* Since the legacy ->set_config interface ties the primary plane together with
* the CRTC state this does not allow userspace to disable the primary plane
* itself. To avoid too much duplicated code use
* drm_plane_helper_check_update() which can be used to enforce the same
* restrictions as primary planes had thus. The default primary plane only
* expose XRBG8888 and ARGB8888 as valid pixel formats for the attached
* framebuffer.
*
* Drivers are highly recommended to implement proper support for primary
* planes, and newly merged drivers must not rely upon these transitional
* helpers.
*
* The second part also implements transitional helpers which allow drivers to
* gradually switch to the atomic helper infrastructure for plane updates. Once
* that switch is complete drivers shouldn't use these any longer, instead using
* the proper legacy implementations for update and disable plane hooks provided
* by the atomic helpers.
*
* Again drivers are strongly urged to switch to the new interfaces.
*/
/*
* This is the minimal list of formats that seem to be safe for modeset use
* with all current DRM drivers. Most hardware can actually support more
@ -369,3 +397,171 @@ int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs);
}
EXPORT_SYMBOL(drm_crtc_init);
int drm_plane_helper_commit(struct drm_plane *plane,
struct drm_plane_state *plane_state,
struct drm_framebuffer *old_fb)
{
struct drm_plane_helper_funcs *plane_funcs;
struct drm_crtc *crtc[2];
struct drm_crtc_helper_funcs *crtc_funcs[2];
int i, ret = 0;
plane_funcs = plane->helper_private;
/* Since this is a transitional helper we can't assume that plane->state
* is always valid. Hence we need to use plane->crtc instead of
* plane->state->crtc as the old crtc. */
crtc[0] = plane->crtc;
crtc[1] = crtc[0] != plane_state->crtc ? plane_state->crtc : NULL;
for (i = 0; i < 2; i++)
crtc_funcs[i] = crtc[i] ? crtc[i]->helper_private : NULL;
if (plane_funcs->atomic_check) {
ret = plane_funcs->atomic_check(plane, plane_state);
if (ret)
goto out;
}
if (plane_funcs->prepare_fb && plane_state->fb) {
ret = plane_funcs->prepare_fb(plane, plane_state->fb);
if (ret)
goto out;
}
/* Point of no return, commit sw state. */
swap(plane->state, plane_state);
for (i = 0; i < 2; i++) {
if (crtc_funcs[i] && crtc_funcs[i]->atomic_begin)
crtc_funcs[i]->atomic_begin(crtc[i]);
}
plane_funcs->atomic_update(plane);
for (i = 0; i < 2; i++) {
if (crtc_funcs[i] && crtc_funcs[i]->atomic_flush)
crtc_funcs[i]->atomic_flush(crtc[i]);
}
for (i = 0; i < 2; i++) {
if (!crtc[i])
continue;
/* There's no other way to figure out whether the crtc is running. */
ret = drm_crtc_vblank_get(crtc[i]);
if (ret == 0) {
drm_crtc_wait_one_vblank(crtc[i]);
drm_crtc_vblank_put(crtc[i]);
}
ret = 0;
}
if (plane_funcs->cleanup_fb && old_fb)
plane_funcs->cleanup_fb(plane, old_fb);
out:
if (plane_state) {
if (plane->funcs->atomic_destroy_state)
plane->funcs->atomic_destroy_state(plane, plane_state);
else
drm_atomic_helper_plane_destroy_state(plane, plane_state);
}
return ret;
}
/**
* drm_plane_helper_update() - Helper for primary plane update
* @plane: plane object to update
* @crtc: owning CRTC of owning plane
* @fb: framebuffer to flip onto plane
* @crtc_x: x offset of primary plane on crtc
* @crtc_y: y offset of primary plane on crtc
* @crtc_w: width of primary plane rectangle on crtc
* @crtc_h: height of primary plane rectangle on crtc
* @src_x: x offset of @fb for panning
* @src_y: y offset of @fb for panning
* @src_w: width of source rectangle in @fb
* @src_h: height of source rectangle in @fb
*
* Provides a default plane update handler using the atomic plane update
* functions. It is fully left to the driver to check plane constraints and
* handle corner-cases like a fully occluded or otherwise invisible plane.
*
* This is useful for piecewise transitioning of a driver to the atomic helpers.
*
* RETURNS:
* Zero on success, error code on failure
*/
int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h)
{
struct drm_plane_state *plane_state;
if (plane->funcs->atomic_duplicate_state)
plane_state = plane->funcs->atomic_duplicate_state(plane);
else if (plane->state)
plane_state = drm_atomic_helper_plane_duplicate_state(plane);
else
plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL);
if (!plane_state)
return -ENOMEM;
plane_state->crtc = crtc;
drm_atomic_set_fb_for_plane(plane_state, fb);
plane_state->crtc_x = crtc_x;
plane_state->crtc_y = crtc_y;
plane_state->crtc_h = crtc_h;
plane_state->crtc_w = crtc_w;
plane_state->src_x = src_x;
plane_state->src_y = src_y;
plane_state->src_h = src_h;
plane_state->src_w = src_w;
return drm_plane_helper_commit(plane, plane_state, plane->fb);
}
EXPORT_SYMBOL(drm_plane_helper_update);
/**
* drm_plane_helper_disable() - Helper for primary plane disable
* @plane: plane to disable
*
* Provides a default plane disable handler using the atomic plane update
* functions. It is fully left to the driver to check plane constraints and
* handle corner-cases like a fully occluded or otherwise invisible plane.
*
* This is useful for piecewise transitioning of a driver to the atomic helpers.
*
* RETURNS:
* Zero on success, error code on failure
*/
int drm_plane_helper_disable(struct drm_plane *plane)
{
struct drm_plane_state *plane_state;
/* crtc helpers love to call disable functions for already disabled hw
* functions. So cope with that. */
if (!plane->crtc)
return 0;
if (plane->funcs->atomic_duplicate_state)
plane_state = plane->funcs->atomic_duplicate_state(plane);
else if (plane->state)
plane_state = drm_atomic_helper_plane_duplicate_state(plane);
else
plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL);
if (!plane_state)
return -ENOMEM;
plane_state->crtc = NULL;
drm_atomic_set_fb_for_plane(plane_state, NULL);
return drm_plane_helper_commit(plane, plane_state, plane->fb);
}
EXPORT_SYMBOL(drm_plane_helper_disable);

1
drivers/gpu/drm/gma500/psb_intel_display.c
View File

@ -21,6 +21,7 @@
#include <linux/i2c.h>
#include <drm/drmP.h>
#include <drm/drm_plane_helper.h>
#include "framebuffer.h"
#include "psb_drv.h"
#include "psb_intel_drv.h"

1
drivers/gpu/drm/mgag200/mgag200_mode.c
View File

@ -15,6 +15,7 @@
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include "mgag200_drv.h"

1
drivers/gpu/drm/nouveau/dispnv04/crtc.c
View File

@ -26,6 +26,7 @@
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include "nouveau_drm.h"
#include "nouveau_reg.h"

1
drivers/gpu/drm/nouveau/nv50_display.c
View File

@ -26,6 +26,7 @@
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_dp_helper.h>
#include <nvif/class.h>

1
drivers/gpu/drm/omapdrm/omap_crtc.c
View File

@ -20,6 +20,7 @@
#include "omap_drv.h"
#include <drm/drm_mode.h>
#include <drm/drm_plane_helper.h>
#include "drm_crtc.h"
#include "drm_crtc_helper.h"

1
drivers/gpu/drm/qxl/qxl_display.c
View File

@ -29,6 +29,7 @@
#include "qxl_drv.h"
#include "qxl_object.h"
#include "drm_crtc_helper.h"
#include <drm/drm_plane_helper.h>
static bool qxl_head_enabled(struct qxl_head *head)
{

1
drivers/gpu/drm/radeon/radeon_display.c
View File

@ -32,6 +32,7 @@
#include <linux/pm_runtime.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_edid.h>
#include <linux/gcd.h>

1
drivers/gpu/drm/rcar-du/rcar_du_crtc.c
View File

@ -19,6 +19,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>
#include "rcar_du_crtc.h"
#include "rcar_du_drv.h"

1
drivers/gpu/drm/shmobile/shmob_drm_crtc.c
View File

@ -19,6 +19,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane_helper.h>
#include <video/sh_mobile_meram.h>

1
drivers/gpu/drm/sti/sti_drm_crtc.c
View File

@ -10,6 +10,7 @@
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include "sti_compositor.h"
#include "sti_drm_drv.h"

2
drivers/gpu/drm/tegra/dc.c
View File

@ -15,6 +15,8 @@
#include "drm.h"
#include "gem.h"
#include <drm/drm_plane_helper.h>
struct tegra_dc_soc_info {
bool supports_interlacing;
bool supports_cursor;

1
drivers/gpu/drm/tilcdc/tilcdc_crtc.c
View File

@ -16,6 +16,7 @@
*/
#include "drm_flip_work.h"
#include <drm/drm_plane_helper.h>
#include "tilcdc_drv.h"
#include "tilcdc_regs.h"

1
drivers/gpu/drm/udl/udl_modeset.c
View File

@ -14,6 +14,7 @@
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include "udl_drv.h"
/*

1
drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c
View File

@ -26,6 +26,7 @@
**************************************************************************/
#include "vmwgfx_kms.h"
#include <drm/drm_plane_helper.h>
#define vmw_crtc_to_ldu(x) \

1
drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c
View File

@ -26,6 +26,7 @@
**************************************************************************/
#include "vmwgfx_kms.h"
#include <drm/drm_plane_helper.h>
#define vmw_crtc_to_sou(x) \

1
drivers/staging/imx-drm/imx-drm-core.c
View File

@ -24,6 +24,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_plane_helper.h>
#include "imx-drm.h"

67
include/drm/drm_atomic.h Normal file
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@ -0,0 +1,67 @@
/*
* Copyright (C) 2014 Red Hat
* Copyright (C) 2014 Intel Corp.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Rob Clark <robdclark@gmail.com>
* Daniel Vetter <daniel.vetter@ffwll.ch>
*/
#ifndef DRM_ATOMIC_H_
#define DRM_ATOMIC_H_
struct drm_atomic_state * __must_check
drm_atomic_state_alloc(struct drm_device *dev);
void drm_atomic_state_clear(struct drm_atomic_state *state);
void drm_atomic_state_free(struct drm_atomic_state *state);
struct drm_crtc_state * __must_check
drm_atomic_get_crtc_state(struct drm_atomic_state *state,
struct drm_crtc *crtc);
struct drm_plane_state * __must_check
drm_atomic_get_plane_state(struct drm_atomic_state *state,
struct drm_plane *plane);
struct drm_connector_state * __must_check
drm_atomic_get_connector_state(struct drm_atomic_state *state,
struct drm_connector *connector);
int __must_check
drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
struct drm_crtc *crtc);
void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
struct drm_framebuffer *fb);
int __must_check
drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
struct drm_crtc *crtc);
int __must_check
drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
struct drm_crtc *crtc);
int
drm_atomic_connectors_for_crtc(struct drm_atomic_state *state,
struct drm_crtc *crtc);
void drm_atomic_legacy_backoff(struct drm_atomic_state *state);
int __must_check drm_atomic_check_only(struct drm_atomic_state *state);
int __must_check drm_atomic_commit(struct drm_atomic_state *state);
int __must_check drm_atomic_async_commit(struct drm_atomic_state *state);
#endif /* DRM_ATOMIC_H_ */

97
include/drm/drm_atomic_helper.h Normal file
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@ -0,0 +1,97 @@
/*
* Copyright (C) 2014 Red Hat
* Copyright (C) 2014 Intel Corp.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Rob Clark <robdclark@gmail.com>
* Daniel Vetter <daniel.vetter@ffwll.ch>
*/
#ifndef DRM_ATOMIC_HELPER_H_
#define DRM_ATOMIC_HELPER_H_
int drm_atomic_helper_check(struct drm_device *dev,
struct drm_atomic_state *state);
int drm_atomic_helper_commit(struct drm_device *dev,
struct drm_atomic_state *state,
bool async);
void drm_atomic_helper_commit_pre_planes(struct drm_device *dev,
struct drm_atomic_state *state);
void drm_atomic_helper_commit_post_planes(struct drm_device *dev,
struct drm_atomic_state *old_state);
int drm_atomic_helper_prepare_planes(struct drm_device *dev,
struct drm_atomic_state *state);
void drm_atomic_helper_commit_planes(struct drm_device *dev,
struct drm_atomic_state *state);
void drm_atomic_helper_cleanup_planes(struct drm_device *dev,
struct drm_atomic_state *old_state);
void drm_atomic_helper_swap_state(struct drm_device *dev,
struct drm_atomic_state *state);
/* implementations for legacy interfaces */
int drm_atomic_helper_update_plane(struct drm_plane *plane,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h);
int drm_atomic_helper_disable_plane(struct drm_plane *plane);
int drm_atomic_helper_set_config(struct drm_mode_set *set);
int drm_atomic_helper_crtc_set_property(struct drm_crtc *crtc,
struct drm_property *property,
uint64_t val);
int drm_atomic_helper_plane_set_property(struct drm_plane *plane,
struct drm_property *property,
uint64_t val);
int drm_atomic_helper_connector_set_property(struct drm_connector *connector,
struct drm_property *property,
uint64_t val);
int drm_atomic_helper_page_flip(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
struct drm_pending_vblank_event *event,
uint32_t flags);
/* default implementations for state handling */
void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc);
struct drm_crtc_state *
drm_atomic_helper_crtc_duplicate_state(struct drm_crtc *crtc);
void drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
struct drm_crtc_state *state);
void drm_atomic_helper_plane_reset(struct drm_plane *plane);
struct drm_plane_state *
drm_atomic_helper_plane_duplicate_state(struct drm_plane *plane);
void drm_atomic_helper_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state);
void drm_atomic_helper_connector_reset(struct drm_connector *connector);
struct drm_connector_state *
drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector);
void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
struct drm_connector_state *state);
#endif /* DRM_ATOMIC_HELPER_H_ */

246
include/drm/drm_crtc.h
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@ -42,6 +42,7 @@ struct drm_object_properties;
struct drm_file;
struct drm_clip_rect;
struct device_node;
struct fence;
#define DRM_MODE_OBJECT_CRTC 0xcccccccc
#define DRM_MODE_OBJECT_CONNECTOR 0xc0c0c0c0
@ -142,8 +143,8 @@ struct drm_framebuffer_funcs {
int (*create_handle)(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int *handle);
/**
* Optinal callback for the dirty fb ioctl.
/*
* Optional callback for the dirty fb ioctl.
*
* Userspace can notify the driver via this callback
* that a area of the framebuffer has changed and should
@ -224,19 +225,57 @@ struct drm_encoder;
struct drm_pending_vblank_event;
struct drm_plane;
struct drm_bridge;
struct drm_atomic_state;
/**
* drm_crtc_funcs - control CRTCs for a given device
* struct drm_crtc_state - mutable CRTC state
* @enable: whether the CRTC should be enabled, gates all other state
* @mode_changed: for use by helpers and drivers when computing state updates
* @last_vblank_count: for helpers and drivers to capture the vblank of the
* update to ensure framebuffer cleanup isn't done too early
* @planes_changed: for use by helpers and drivers when computing state updates
* @adjusted_mode: for use by helpers and drivers to compute adjusted mode timings
* @mode: current mode timings
* @event: optional pointer to a DRM event to signal upon completion of the
* state update
* @state: backpointer to global drm_atomic_state
*/
struct drm_crtc_state {
bool enable;
/* computed state bits used by helpers and drivers */
bool planes_changed : 1;
bool mode_changed : 1;
/* last_vblank_count: for vblank waits before cleanup */
u32 last_vblank_count;
/* adjusted_mode: for use by helpers and drivers */
struct drm_display_mode adjusted_mode;
struct drm_display_mode mode;
struct drm_pending_vblank_event *event;
struct drm_atomic_state *state;
};
/**
* struct drm_crtc_funcs - control CRTCs for a given device
* @save: save CRTC state
* @restore: restore CRTC state
* @reset: reset CRTC after state has been invalidated (e.g. resume)
* @cursor_set: setup the cursor
* @cursor_set2: setup the cursor with hotspot, superseeds @cursor_set if set
* @cursor_move: move the cursor
* @gamma_set: specify color ramp for CRTC
* @destroy: deinit and free object
* @set_property: called when a property is changed
* @set_config: apply a new CRTC configuration
* @page_flip: initiate a page flip
* @atomic_duplicate_state: duplicate the atomic state for this CRTC
* @atomic_destroy_state: destroy an atomic state for this CRTC
* @atomic_set_property: set a property on an atomic state for this CRTC
*
* The drm_crtc_funcs structure is the central CRTC management structure
* in the DRM. Each CRTC controls one or more connectors (note that the name
@ -287,16 +326,28 @@ struct drm_crtc_funcs {
int (*set_property)(struct drm_crtc *crtc,
struct drm_property *property, uint64_t val);
/* atomic update handling */
struct drm_crtc_state *(*atomic_duplicate_state)(struct drm_crtc *crtc);
void (*atomic_destroy_state)(struct drm_crtc *crtc,
struct drm_crtc_state *state);
int (*atomic_set_property)(struct drm_crtc *crtc,
struct drm_crtc_state *state,
struct drm_property *property,
uint64_t val);
};
/**
* drm_crtc - central CRTC control structure
* struct drm_crtc - central CRTC control structure
* @dev: parent DRM device
* @port: OF node used by drm_of_find_possible_crtcs()
* @head: list management
* @mutex: per-CRTC locking
* @base: base KMS object for ID tracking etc.
* @primary: primary plane for this CRTC
* @cursor: cursor plane for this CRTC
* @cursor_x: current x position of the cursor, used for universal cursor planes
* @cursor_y: current y position of the cursor, used for universal cursor planes
* @enabled: is this CRTC enabled?
* @mode: current mode timings
* @hwmode: mode timings as programmed to hw regs
@ -309,10 +360,13 @@ struct drm_crtc_funcs {
* @gamma_size: size of gamma ramp
* @gamma_store: gamma ramp values
* @framedur_ns: precise frame timing
* @framedur_ns: precise line timing
* @linedur_ns: precise line timing
* @pixeldur_ns: precise pixel timing
* @helper_private: mid-layer private data
* @properties: property tracking for this CRTC
* @state: current atomic state for this CRTC
* @acquire_ctx: per-CRTC implicit acquire context used by atomic drivers for
* legacy ioctls
*
* Each CRTC may have one or more connectors associated with it. This structure
* allows the CRTC to be controlled.
@ -322,7 +376,7 @@ struct drm_crtc {
struct device_node *port;
struct list_head head;
/**
/*
* crtc mutex
*
* This provides a read lock for the overall crtc state (mode, dpms
@ -368,6 +422,8 @@ struct drm_crtc {
struct drm_object_properties properties;
struct drm_crtc_state *state;
/*
* For legacy crtc ioctls so that atomic drivers can get at the locking
* acquire context.
@ -375,9 +431,22 @@ struct drm_crtc {
struct drm_modeset_acquire_ctx *acquire_ctx;
};
/**
* struct drm_connector_state - mutable connector state
* @crtc: CRTC to connect connector to, NULL if disabled
* @best_encoder: can be used by helpers and drivers to select the encoder
* @state: backpointer to global drm_atomic_state
*/
struct drm_connector_state {
struct drm_crtc *crtc;
struct drm_encoder *best_encoder;
struct drm_atomic_state *state;
};
/**
* drm_connector_funcs - control connectors on a given device
* struct drm_connector_funcs - control connectors on a given device
* @dpms: set power state (see drm_crtc_funcs above)
* @save: save connector state
* @restore: restore connector state
@ -387,6 +456,9 @@ struct drm_crtc {
* @set_property: property for this connector may need an update
* @destroy: make object go away
* @force: notify the driver that the connector is forced on
* @atomic_duplicate_state: duplicate the atomic state for this connector
* @atomic_destroy_state: destroy an atomic state for this connector
* @atomic_set_property: set a property on an atomic state for this connector
*
* Each CRTC may have one or more connectors attached to it. The functions
* below allow the core DRM code to control connectors, enumerate available modes,
@ -411,10 +483,19 @@ struct drm_connector_funcs {
uint64_t val);
void (*destroy)(struct drm_connector *connector);
void (*force)(struct drm_connector *connector);
/* atomic update handling */
struct drm_connector_state *(*atomic_duplicate_state)(struct drm_connector *connector);
void (*atomic_destroy_state)(struct drm_connector *connector,
struct drm_connector_state *state);
int (*atomic_set_property)(struct drm_connector *connector,
struct drm_connector_state *state,
struct drm_property *property,
uint64_t val);
};
/**
* drm_encoder_funcs - encoder controls
* struct drm_encoder_funcs - encoder controls
* @reset: reset state (e.g. at init or resume time)
* @destroy: cleanup and free associated data
*
@ -428,7 +509,7 @@ struct drm_encoder_funcs {
#define DRM_CONNECTOR_MAX_ENCODER 3
/**
* drm_encoder - central DRM encoder structure
* struct drm_encoder - central DRM encoder structure
* @dev: parent DRM device
* @head: list management
* @base: base KMS object
@ -472,7 +553,7 @@ struct drm_encoder {
#define MAX_ELD_BYTES 128
/**
* drm_connector - central DRM connector control structure
* struct drm_connector - central DRM connector control structure
* @dev: parent DRM device
* @kdev: kernel device for sysfs attributes
* @attr: sysfs attributes
@ -483,6 +564,7 @@ struct drm_encoder {
* @connector_type_id: index into connector type enum
* @interlace_allowed: can this connector handle interlaced modes?
* @doublescan_allowed: can this connector handle doublescan?
* @stereo_allowed: can this connector handle stereo modes?
* @modes: modes available on this connector (from fill_modes() + user)
* @status: one of the drm_connector_status enums (connected, not, or unknown)
* @probed_modes: list of modes derived directly from the display
@ -490,10 +572,13 @@ struct drm_encoder {
* @funcs: connector control functions
* @edid_blob_ptr: DRM property containing EDID if present
* @properties: property tracking for this connector
* @path_blob_ptr: DRM blob property data for the DP MST path property
* @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
* @dpms: current dpms state
* @helper_private: mid-layer private data
* @cmdline_mode: mode line parsed from the kernel cmdline for this connector
* @force: a %DRM_FORCE_<foo> state for forced mode sets
* @override_edid: has the EDID been overwritten through debugfs for testing?
* @encoder_ids: valid encoders for this connector
* @encoder: encoder driving this connector, if any
* @eld: EDID-like data, if present
@ -503,6 +588,9 @@ struct drm_encoder {
* @video_latency: video latency info from ELD, if found
* @audio_latency: audio latency info from ELD, if found
* @null_edid_counter: track sinks that give us all zeros for the EDID
* @bad_edid_counter: track sinks that give us an EDID with invalid checksum
* @debugfs_entry: debugfs directory for this connector
* @state: current atomic state for this connector
*
* Each connector may be connected to one or more CRTCs, or may be clonable by
* another connector if they can share a CRTC. Each connector also has a specific
@ -563,14 +651,54 @@ struct drm_connector {
unsigned bad_edid_counter;
struct dentry *debugfs_entry;
struct drm_connector_state *state;
};
/**
* drm_plane_funcs - driver plane control functions
* struct drm_plane_state - mutable plane state
* @crtc: currently bound CRTC, NULL if disabled
* @fb: currently bound framebuffer
* @fence: optional fence to wait for before scanning out @fb
* @crtc_x: left position of visible portion of plane on crtc
* @crtc_y: upper position of visible portion of plane on crtc
* @crtc_w: width of visible portion of plane on crtc
* @crtc_h: height of visible portion of plane on crtc
* @src_x: left position of visible portion of plane within
* plane (in 16.16)
* @src_y: upper position of visible portion of plane within
* plane (in 16.16)
* @src_w: width of visible portion of plane (in 16.16)
* @src_h: height of visible portion of plane (in 16.16)
* @state: backpointer to global drm_atomic_state
*/
struct drm_plane_state {
struct drm_crtc *crtc;
struct drm_framebuffer *fb;
struct fence *fence;
/* Signed dest location allows it to be partially off screen */
int32_t crtc_x, crtc_y;
uint32_t crtc_w, crtc_h;
/* Source values are 16.16 fixed point */
uint32_t src_x, src_y;
uint32_t src_h, src_w;
struct drm_atomic_state *state;
};
/**
* struct drm_plane_funcs - driver plane control functions
* @update_plane: update the plane configuration
* @disable_plane: shut down the plane
* @destroy: clean up plane resources
* @reset: reset plane after state has been invalidated (e.g. resume)
* @set_property: called when a property is changed
* @atomic_duplicate_state: duplicate the atomic state for this plane
* @atomic_destroy_state: destroy an atomic state for this plane
* @atomic_set_property: set a property on an atomic state for this plane
*/
struct drm_plane_funcs {
int (*update_plane)(struct drm_plane *plane,
@ -585,6 +713,15 @@ struct drm_plane_funcs {
int (*set_property)(struct drm_plane *plane,
struct drm_property *property, uint64_t val);
/* atomic update handling */
struct drm_plane_state *(*atomic_duplicate_state)(struct drm_plane *plane);
void (*atomic_destroy_state)(struct drm_plane *plane,
struct drm_plane_state *state);
int (*atomic_set_property)(struct drm_plane *plane,
struct drm_plane_state *state,
struct drm_property *property,
uint64_t val);
};
enum drm_plane_type {
@ -594,7 +731,7 @@ enum drm_plane_type {
};
/**
* drm_plane - central DRM plane control structure
* struct drm_plane - central DRM plane control structure
* @dev: DRM device this plane belongs to
* @head: for list management
* @base: base mode object
@ -603,9 +740,12 @@ enum drm_plane_type {
* @format_count: number of formats supported
* @crtc: currently bound CRTC
* @fb: currently bound fb
* @old_fb: Temporary tracking of the old fb while a modeset is ongoing. Used by
* drm_mode_set_config_internal() to implement correct refcounting.
* @funcs: helper functions
* @properties: property tracking for this plane
* @type: type of plane (overlay, primary, cursor)
* @state: current atomic state for this plane
*/
struct drm_plane {
struct drm_device *dev;
@ -620,8 +760,6 @@ struct drm_plane {
struct drm_crtc *crtc;
struct drm_framebuffer *fb;
/* Temporary tracking of the old fb while a modeset is ongoing. Used
* by drm_mode_set_config_internal to implement correct refcounting. */
struct drm_framebuffer *old_fb;
const struct drm_plane_funcs *funcs;
@ -629,10 +767,14 @@ struct drm_plane {
struct drm_object_properties properties;
enum drm_plane_type type;
void *helper_private;
struct drm_plane_state *state;
};
/**
* drm_bridge_funcs - drm_bridge control functions
* struct drm_bridge_funcs - drm_bridge control functions
* @mode_fixup: Try to fixup (or reject entirely) proposed mode for this bridge
* @disable: Called right before encoder prepare, disables the bridge
* @post_disable: Called right after encoder prepare, for lockstepped disable
@ -656,7 +798,7 @@ struct drm_bridge_funcs {
};
/**
* drm_bridge - central DRM bridge control structure
* struct drm_bridge - central DRM bridge control structure
* @dev: DRM device this bridge belongs to
* @head: list management
* @base: base mode object
@ -674,8 +816,33 @@ struct drm_bridge {
};
/**
* drm_mode_set - new values for a CRTC config change
* @head: list management
* struct struct drm_atomic_state - the global state object for atomic updates
* @dev: parent DRM device
* @flags: state flags like async update
* @planes: pointer to array of plane pointers
* @plane_states: pointer to array of plane states pointers
* @crtcs: pointer to array of CRTC pointers
* @crtc_states: pointer to array of CRTC states pointers
* @connectors: pointer to array of connector pointers
* @connector_states: pointer to array of connector states pointers
* @acquire_ctx: acquire context for this atomic modeset state update
*/
struct drm_atomic_state {
struct drm_device *dev;
uint32_t flags;
struct drm_plane **planes;
struct drm_plane_state **plane_states;
struct drm_crtc **crtcs;
struct drm_crtc_state **crtc_states;
struct drm_connector **connectors;
struct drm_connector_state **connector_states;
struct drm_modeset_acquire_ctx *acquire_ctx;
};
/**
* struct drm_mode_set - new values for a CRTC config change
* @fb: framebuffer to use for new config
* @crtc: CRTC whose configuration we're about to change
* @mode: mode timings to use
@ -705,6 +872,9 @@ struct drm_mode_set {
* struct drm_mode_config_funcs - basic driver provided mode setting functions
* @fb_create: create a new framebuffer object
* @output_poll_changed: function to handle output configuration changes
* @atomic_check: check whether a give atomic state update is possible
* @atomic_commit: commit an atomic state update previously verified with
* atomic_check()
*
* Some global (i.e. not per-CRTC, connector, etc) mode setting functions that
* involve drivers.
@ -714,13 +884,20 @@ struct drm_mode_config_funcs {
struct drm_file *file_priv,
struct drm_mode_fb_cmd2 *mode_cmd);
void (*output_poll_changed)(struct drm_device *dev);
int (*atomic_check)(struct drm_device *dev,
struct drm_atomic_state *a);
int (*atomic_commit)(struct drm_device *dev,
struct drm_atomic_state *a,
bool async);
};
/**
* drm_mode_group - group of mode setting resources for potential sub-grouping
* struct drm_mode_group - group of mode setting resources for potential sub-grouping
* @num_crtcs: CRTC count
* @num_encoders: encoder count
* @num_connectors: connector count
* @num_bridges: bridge count
* @id_list: list of KMS object IDs in this group
*
* Currently this simply tracks the global mode setting state. But in the
@ -740,10 +917,14 @@ struct drm_mode_group {
};
/**
* drm_mode_config - Mode configuration control structure
* struct drm_mode_config - Mode configuration control structure
* @mutex: mutex protecting KMS related lists and structures
* @connection_mutex: ww mutex protecting connector state and routing
* @acquire_ctx: global implicit acquire context used by atomic drivers for
* legacy ioctls
* @idr_mutex: mutex for KMS ID allocation and management
* @crtc_idr: main KMS ID tracking object
* @fb_lock: mutex to protect fb state and lists
* @num_fb: number of fbs available
* @fb_list: list of framebuffers available
* @num_connector: number of connectors on this device
@ -752,17 +933,28 @@ struct drm_mode_group {
* @bridge_list: list of bridge objects
* @num_encoder: number of encoders on this device
* @encoder_list: list of encoder objects
* @num_overlay_plane: number of overlay planes on this device
* @num_total_plane: number of universal (i.e. with primary/curso) planes on this device
* @plane_list: list of plane objects
* @num_crtc: number of CRTCs on this device
* @crtc_list: list of CRTC objects
* @property_list: list of property objects
* @min_width: minimum pixel width on this device
* @min_height: minimum pixel height on this device
* @max_width: maximum pixel width on this device
* @max_height: maximum pixel height on this device
* @funcs: core driver provided mode setting functions
* @fb_base: base address of the framebuffer
* @poll_enabled: track polling status for this device
* @poll_enabled: track polling support for this device
* @poll_running: track polling status for this device
* @output_poll_work: delayed work for polling in process context
* @property_blob_list: list of all the blob property objects
* @*_property: core property tracking
* @preferred_depth: preferred RBG pixel depth, used by fb helpers
* @prefer_shadow: hint to userspace to prefer shadow-fb rendering
* @async_page_flip: does this device support async flips on the primary plane?
* @cursor_width: hint to userspace for max cursor width
* @cursor_height: hint to userspace for max cursor height
*
* Core mode resource tracking structure. All CRTC, encoders, and connectors
* enumerated by the driver are added here, as are global properties. Some
@ -776,14 +968,7 @@ struct drm_mode_config {
struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
/* this is limited to one for now */
/**
* fb_lock - mutex to protect fb state
*
* Besides the global fb list his also protects the fbs list in the
* file_priv
*/
struct mutex fb_lock;
struct mutex fb_lock; /* proctects global and per-file fb lists */
int num_fb;
struct list_head fb_list;
@ -880,9 +1065,6 @@ extern int drm_crtc_init_with_planes(struct drm_device *dev,
struct drm_plane *primary,
struct drm_plane *cursor,
const struct drm_crtc_funcs *funcs);
extern int drm_crtc_init(struct drm_device *dev,
struct drm_crtc *crtc,
const struct drm_crtc_funcs *funcs);
extern void drm_crtc_cleanup(struct drm_crtc *crtc);
extern unsigned int drm_crtc_index(struct drm_crtc *crtc);

13
include/drm/drm_crtc_helper.h
View File

@ -68,6 +68,7 @@ struct drm_crtc_helper_funcs {
int (*mode_set)(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode, int x, int y,
struct drm_framebuffer *old_fb);
void (*mode_set_nofb)(struct drm_crtc *crtc);
/* Move the crtc on the current fb to the given position *optional* */
int (*mode_set_base)(struct drm_crtc *crtc, int x, int y,
@ -81,6 +82,12 @@ struct drm_crtc_helper_funcs {
/* disable crtc when not in use - more explicit than dpms off */
void (*disable)(struct drm_crtc *crtc);
/* atomic helpers */
int (*atomic_check)(struct drm_crtc *crtc,
struct drm_crtc_state *state);
void (*atomic_begin)(struct drm_crtc *crtc);
void (*atomic_flush)(struct drm_crtc *crtc);
};
/**
@ -161,6 +168,12 @@ static inline void drm_connector_helper_add(struct drm_connector *connector,
extern void drm_helper_resume_force_mode(struct drm_device *dev);
int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode, int x, int y,
struct drm_framebuffer *old_fb);
int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb);
/* drm_probe_helper.c */
extern int drm_helper_probe_single_connector_modes(struct drm_connector
*connector, uint32_t maxX,

1
include/drm/drm_modeset_lock.h
View File

@ -33,6 +33,7 @@ struct drm_modeset_lock;
* @ww_ctx: base acquire ctx
* @contended: used internally for -EDEADLK handling
* @locked: list of held locks
* @trylock_only: trylock mode used in atomic contexts/panic notifiers
*
* Each thread competing for a set of locks must use one acquire
* ctx. And if any lock fxn returns -EDEADLK, it must backoff and

39
include/drm/drm_plane_helper.h
View File

@ -25,6 +25,7 @@
#define DRM_PLANE_HELPER_H
#include <drm/drm_rect.h>
#include <drm/drm_crtc.h>
/*
* Drivers that don't allow primary plane scaling may pass this macro in place
@ -42,6 +43,32 @@
* planes.
*/
extern int drm_crtc_init(struct drm_device *dev,
struct drm_crtc *crtc,
const struct drm_crtc_funcs *funcs);
/**
* drm_plane_helper_funcs - helper operations for CRTCs
*
* The helper operations are called by the mid-layer CRTC helper.
*/
struct drm_plane_helper_funcs {
int (*prepare_fb)(struct drm_plane *plane,
struct drm_framebuffer *fb);
void (*cleanup_fb)(struct drm_plane *plane,
struct drm_framebuffer *fb);
int (*atomic_check)(struct drm_plane *plane,
struct drm_plane_state *state);
void (*atomic_update)(struct drm_plane *plane);
};
static inline void drm_plane_helper_add(struct drm_plane *plane,
const struct drm_plane_helper_funcs *funcs)
{
plane->helper_private = (void *)funcs;
}
extern int drm_plane_helper_check_update(struct drm_plane *plane,
struct drm_crtc *crtc,
struct drm_framebuffer *fb,
@ -68,4 +95,16 @@ extern struct drm_plane *drm_primary_helper_create_plane(struct drm_device *dev,
int num_formats);
int drm_plane_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
uint32_t src_x, uint32_t src_y,
uint32_t src_w, uint32_t src_h);
int drm_plane_helper_disable(struct drm_plane *plane);
/* For use by drm_crtc_helper.c */
int drm_plane_helper_commit(struct drm_plane *plane,
struct drm_plane_state *plane_state,
struct drm_framebuffer *old_fb);
#endif