![Ville Syrjälä](/assets/img/avatar_default.png)
We have intel_rotation_90_or_270() in i915 to check if the rotation is 90 or 270 degrees. Similar checks are elsewhere in drm, so let's move the helper into a central place and use it everwhere. v2: Drop the BIT() Convert all new intel_rotation_90_or_270() calls Deal with superfluous code shuffling Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v1) Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1474907460-10717-2-git-send-email-ville.syrjala@linux.intel.com
1295 lines
34 KiB
C
1295 lines
34 KiB
C
/*
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* Copyright (c) 2006-2008 Intel Corporation
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* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
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* Copyright (c) 2008 Red Hat Inc.
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*
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* DRM core CRTC related functions
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*
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* Authors:
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* Keith Packard
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* Eric Anholt <eric@anholt.net>
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* Dave Airlie <airlied@linux.ie>
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* Jesse Barnes <jesse.barnes@intel.com>
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*/
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#include <linux/ctype.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_modeset_lock.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_auth.h>
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#include <drm/drm_debugfs_crc.h>
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#include "drm_crtc_internal.h"
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#include "drm_internal.h"
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/*
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* Global properties
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*/
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static const struct drm_prop_enum_list drm_plane_type_enum_list[] = {
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{ DRM_PLANE_TYPE_OVERLAY, "Overlay" },
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{ DRM_PLANE_TYPE_PRIMARY, "Primary" },
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{ DRM_PLANE_TYPE_CURSOR, "Cursor" },
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};
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/*
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* Optional properties
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*/
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/**
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* drm_crtc_force_disable - Forcibly turn off a CRTC
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* @crtc: CRTC to turn off
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_crtc_force_disable(struct drm_crtc *crtc)
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{
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struct drm_mode_set set = {
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.crtc = crtc,
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};
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return drm_mode_set_config_internal(&set);
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}
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EXPORT_SYMBOL(drm_crtc_force_disable);
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/**
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* drm_crtc_force_disable_all - Forcibly turn off all enabled CRTCs
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* @dev: DRM device whose CRTCs to turn off
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*
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* Drivers may want to call this on unload to ensure that all displays are
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* unlit and the GPU is in a consistent, low power state. Takes modeset locks.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_crtc_force_disable_all(struct drm_device *dev)
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{
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struct drm_crtc *crtc;
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int ret = 0;
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drm_modeset_lock_all(dev);
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drm_for_each_crtc(crtc, dev)
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if (crtc->enabled) {
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ret = drm_crtc_force_disable(crtc);
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if (ret)
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goto out;
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}
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out:
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drm_modeset_unlock_all(dev);
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return ret;
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}
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EXPORT_SYMBOL(drm_crtc_force_disable_all);
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DEFINE_WW_CLASS(crtc_ww_class);
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static unsigned int drm_num_crtcs(struct drm_device *dev)
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{
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unsigned int num = 0;
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struct drm_crtc *tmp;
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drm_for_each_crtc(tmp, dev) {
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num++;
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}
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return num;
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}
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static int drm_crtc_register_all(struct drm_device *dev)
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{
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struct drm_crtc *crtc;
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int ret = 0;
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drm_for_each_crtc(crtc, dev) {
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if (drm_debugfs_crtc_add(crtc))
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DRM_ERROR("Failed to initialize debugfs entry for CRTC '%s'.\n",
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crtc->name);
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if (crtc->funcs->late_register)
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ret = crtc->funcs->late_register(crtc);
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if (ret)
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return ret;
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}
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return 0;
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}
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static void drm_crtc_unregister_all(struct drm_device *dev)
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{
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struct drm_crtc *crtc;
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drm_for_each_crtc(crtc, dev) {
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if (crtc->funcs->early_unregister)
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crtc->funcs->early_unregister(crtc);
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drm_debugfs_crtc_remove(crtc);
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}
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}
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static int drm_crtc_crc_init(struct drm_crtc *crtc)
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{
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#ifdef CONFIG_DEBUG_FS
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spin_lock_init(&crtc->crc.lock);
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init_waitqueue_head(&crtc->crc.wq);
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crtc->crc.source = kstrdup("auto", GFP_KERNEL);
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if (!crtc->crc.source)
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return -ENOMEM;
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#endif
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return 0;
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}
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static void drm_crtc_crc_fini(struct drm_crtc *crtc)
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{
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#ifdef CONFIG_DEBUG_FS
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kfree(crtc->crc.source);
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#endif
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}
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/**
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* drm_crtc_init_with_planes - Initialise a new CRTC object with
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* specified primary and cursor planes.
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* @dev: DRM device
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* @crtc: CRTC object to init
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* @primary: Primary plane for CRTC
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* @cursor: Cursor plane for CRTC
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* @funcs: callbacks for the new CRTC
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* @name: printf style format string for the CRTC name, or NULL for default name
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*
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* Inits a new object created as base part of a driver crtc object. Drivers
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* should use this function instead of drm_crtc_init(), which is only provided
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* for backwards compatibility with drivers which do not yet support universal
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* planes). For really simple hardware which has only 1 plane look at
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* drm_simple_display_pipe_init() instead.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_crtc_init_with_planes(struct drm_device *dev, struct drm_crtc *crtc,
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struct drm_plane *primary,
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struct drm_plane *cursor,
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const struct drm_crtc_funcs *funcs,
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const char *name, ...)
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{
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struct drm_mode_config *config = &dev->mode_config;
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int ret;
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WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
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WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
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crtc->dev = dev;
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crtc->funcs = funcs;
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INIT_LIST_HEAD(&crtc->commit_list);
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spin_lock_init(&crtc->commit_lock);
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drm_modeset_lock_init(&crtc->mutex);
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ret = drm_mode_object_get(dev, &crtc->base, DRM_MODE_OBJECT_CRTC);
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if (ret)
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return ret;
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if (name) {
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va_list ap;
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va_start(ap, name);
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crtc->name = kvasprintf(GFP_KERNEL, name, ap);
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va_end(ap);
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} else {
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crtc->name = kasprintf(GFP_KERNEL, "crtc-%d",
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drm_num_crtcs(dev));
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}
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if (!crtc->name) {
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drm_mode_object_unregister(dev, &crtc->base);
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return -ENOMEM;
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}
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crtc->base.properties = &crtc->properties;
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list_add_tail(&crtc->head, &config->crtc_list);
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crtc->index = config->num_crtc++;
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crtc->primary = primary;
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crtc->cursor = cursor;
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if (primary)
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primary->possible_crtcs = 1 << drm_crtc_index(crtc);
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if (cursor)
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cursor->possible_crtcs = 1 << drm_crtc_index(crtc);
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ret = drm_crtc_crc_init(crtc);
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if (ret) {
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drm_mode_object_unregister(dev, &crtc->base);
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return ret;
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}
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if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
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drm_object_attach_property(&crtc->base, config->prop_active, 0);
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drm_object_attach_property(&crtc->base, config->prop_mode_id, 0);
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}
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return 0;
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}
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EXPORT_SYMBOL(drm_crtc_init_with_planes);
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/**
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* drm_crtc_cleanup - Clean up the core crtc usage
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* @crtc: CRTC to cleanup
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*
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* This function cleans up @crtc and removes it from the DRM mode setting
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* core. Note that the function does *not* free the crtc structure itself,
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* this is the responsibility of the caller.
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*/
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void drm_crtc_cleanup(struct drm_crtc *crtc)
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{
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struct drm_device *dev = crtc->dev;
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/* Note that the crtc_list is considered to be static; should we
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* remove the drm_crtc at runtime we would have to decrement all
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* the indices on the drm_crtc after us in the crtc_list.
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*/
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drm_crtc_crc_fini(crtc);
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kfree(crtc->gamma_store);
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crtc->gamma_store = NULL;
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drm_modeset_lock_fini(&crtc->mutex);
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drm_mode_object_unregister(dev, &crtc->base);
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list_del(&crtc->head);
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dev->mode_config.num_crtc--;
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WARN_ON(crtc->state && !crtc->funcs->atomic_destroy_state);
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if (crtc->state && crtc->funcs->atomic_destroy_state)
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crtc->funcs->atomic_destroy_state(crtc, crtc->state);
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kfree(crtc->name);
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memset(crtc, 0, sizeof(*crtc));
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}
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EXPORT_SYMBOL(drm_crtc_cleanup);
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int drm_modeset_register_all(struct drm_device *dev)
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{
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int ret;
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ret = drm_plane_register_all(dev);
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if (ret)
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goto err_plane;
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ret = drm_crtc_register_all(dev);
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if (ret)
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goto err_crtc;
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ret = drm_encoder_register_all(dev);
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if (ret)
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goto err_encoder;
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ret = drm_connector_register_all(dev);
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if (ret)
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goto err_connector;
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return 0;
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err_connector:
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drm_encoder_unregister_all(dev);
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err_encoder:
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drm_crtc_unregister_all(dev);
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err_crtc:
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drm_plane_unregister_all(dev);
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err_plane:
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return ret;
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}
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void drm_modeset_unregister_all(struct drm_device *dev)
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{
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drm_connector_unregister_all(dev);
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drm_encoder_unregister_all(dev);
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drm_crtc_unregister_all(dev);
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drm_plane_unregister_all(dev);
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}
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static int drm_mode_create_standard_properties(struct drm_device *dev)
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{
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struct drm_property *prop;
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int ret;
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ret = drm_connector_create_standard_properties(dev);
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if (ret)
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return ret;
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prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
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"type", drm_plane_type_enum_list,
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ARRAY_SIZE(drm_plane_type_enum_list));
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if (!prop)
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return -ENOMEM;
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dev->mode_config.plane_type_property = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"SRC_X", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_src_x = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"SRC_Y", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_src_y = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"SRC_W", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_src_w = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"SRC_H", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_src_h = prop;
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prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_X", INT_MIN, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_x = prop;
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prop = drm_property_create_signed_range(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_Y", INT_MIN, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_y = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_W", 0, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_w = prop;
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prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_H", 0, INT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_h = prop;
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prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
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"FB_ID", DRM_MODE_OBJECT_FB);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_fb_id = prop;
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prop = drm_property_create_object(dev, DRM_MODE_PROP_ATOMIC,
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"CRTC_ID", DRM_MODE_OBJECT_CRTC);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_crtc_id = prop;
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prop = drm_property_create_bool(dev, DRM_MODE_PROP_ATOMIC,
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"ACTIVE");
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_active = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
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"MODE_ID", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.prop_mode_id = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_BLOB,
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"DEGAMMA_LUT", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.degamma_lut_property = prop;
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prop = drm_property_create_range(dev,
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DRM_MODE_PROP_IMMUTABLE,
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"DEGAMMA_LUT_SIZE", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.degamma_lut_size_property = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_BLOB,
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"CTM", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.ctm_property = prop;
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prop = drm_property_create(dev,
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DRM_MODE_PROP_BLOB,
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"GAMMA_LUT", 0);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.gamma_lut_property = prop;
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prop = drm_property_create_range(dev,
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DRM_MODE_PROP_IMMUTABLE,
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"GAMMA_LUT_SIZE", 0, UINT_MAX);
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if (!prop)
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return -ENOMEM;
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dev->mode_config.gamma_lut_size_property = prop;
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return 0;
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}
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|
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/**
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* drm_mode_getresources - get graphics configuration
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* @dev: drm device for the ioctl
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* @data: data pointer for the ioctl
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* @file_priv: drm file for the ioctl call
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*
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* Construct a set of configuration description structures and return
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* them to the user, including CRTC, connector and framebuffer configuration.
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*
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* Called by the user via ioctl.
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*
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* Returns:
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* Zero on success, negative errno on failure.
|
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*/
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int drm_mode_getresources(struct drm_device *dev, void *data,
|
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struct drm_file *file_priv)
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{
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struct drm_mode_card_res *card_res = data;
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struct list_head *lh;
|
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struct drm_framebuffer *fb;
|
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struct drm_connector *connector;
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struct drm_crtc *crtc;
|
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struct drm_encoder *encoder;
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int ret = 0;
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int connector_count = 0;
|
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int crtc_count = 0;
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int fb_count = 0;
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int encoder_count = 0;
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int copied = 0;
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uint32_t __user *fb_id;
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uint32_t __user *crtc_id;
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uint32_t __user *connector_id;
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uint32_t __user *encoder_id;
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if (!drm_core_check_feature(dev, DRIVER_MODESET))
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return -EINVAL;
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|
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mutex_lock(&file_priv->fbs_lock);
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/*
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|
* For the non-control nodes we need to limit the list of resources
|
|
* by IDs in the group list for this node
|
|
*/
|
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list_for_each(lh, &file_priv->fbs)
|
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fb_count++;
|
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|
|
/* handle this in 4 parts */
|
|
/* FBs */
|
|
if (card_res->count_fbs >= fb_count) {
|
|
copied = 0;
|
|
fb_id = (uint32_t __user *)(unsigned long)card_res->fb_id_ptr;
|
|
list_for_each_entry(fb, &file_priv->fbs, filp_head) {
|
|
if (put_user(fb->base.id, fb_id + copied)) {
|
|
mutex_unlock(&file_priv->fbs_lock);
|
|
return -EFAULT;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
card_res->count_fbs = fb_count;
|
|
mutex_unlock(&file_priv->fbs_lock);
|
|
|
|
/* mode_config.mutex protects the connector list against e.g. DP MST
|
|
* connector hot-adding. CRTC/Plane lists are invariant. */
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
drm_for_each_crtc(crtc, dev)
|
|
crtc_count++;
|
|
|
|
drm_for_each_connector(connector, dev)
|
|
connector_count++;
|
|
|
|
drm_for_each_encoder(encoder, dev)
|
|
encoder_count++;
|
|
|
|
card_res->max_height = dev->mode_config.max_height;
|
|
card_res->min_height = dev->mode_config.min_height;
|
|
card_res->max_width = dev->mode_config.max_width;
|
|
card_res->min_width = dev->mode_config.min_width;
|
|
|
|
/* CRTCs */
|
|
if (card_res->count_crtcs >= crtc_count) {
|
|
copied = 0;
|
|
crtc_id = (uint32_t __user *)(unsigned long)card_res->crtc_id_ptr;
|
|
drm_for_each_crtc(crtc, dev) {
|
|
if (put_user(crtc->base.id, crtc_id + copied)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
card_res->count_crtcs = crtc_count;
|
|
|
|
/* Encoders */
|
|
if (card_res->count_encoders >= encoder_count) {
|
|
copied = 0;
|
|
encoder_id = (uint32_t __user *)(unsigned long)card_res->encoder_id_ptr;
|
|
drm_for_each_encoder(encoder, dev) {
|
|
if (put_user(encoder->base.id, encoder_id +
|
|
copied)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
card_res->count_encoders = encoder_count;
|
|
|
|
/* Connectors */
|
|
if (card_res->count_connectors >= connector_count) {
|
|
copied = 0;
|
|
connector_id = (uint32_t __user *)(unsigned long)card_res->connector_id_ptr;
|
|
drm_for_each_connector(connector, dev) {
|
|
if (put_user(connector->base.id,
|
|
connector_id + copied)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
card_res->count_connectors = connector_count;
|
|
|
|
out:
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_getcrtc - get CRTC configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Construct a CRTC configuration structure to return to the user.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_getcrtc(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_crtc *crtc_resp = data;
|
|
struct drm_crtc *crtc;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
crtc = drm_crtc_find(dev, crtc_resp->crtc_id);
|
|
if (!crtc)
|
|
return -ENOENT;
|
|
|
|
drm_modeset_lock_crtc(crtc, crtc->primary);
|
|
crtc_resp->gamma_size = crtc->gamma_size;
|
|
if (crtc->primary->fb)
|
|
crtc_resp->fb_id = crtc->primary->fb->base.id;
|
|
else
|
|
crtc_resp->fb_id = 0;
|
|
|
|
if (crtc->state) {
|
|
crtc_resp->x = crtc->primary->state->src_x >> 16;
|
|
crtc_resp->y = crtc->primary->state->src_y >> 16;
|
|
if (crtc->state->enable) {
|
|
drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
|
|
crtc_resp->mode_valid = 1;
|
|
|
|
} else {
|
|
crtc_resp->mode_valid = 0;
|
|
}
|
|
} else {
|
|
crtc_resp->x = crtc->x;
|
|
crtc_resp->y = crtc->y;
|
|
if (crtc->enabled) {
|
|
drm_mode_convert_to_umode(&crtc_resp->mode, &crtc->mode);
|
|
crtc_resp->mode_valid = 1;
|
|
|
|
} else {
|
|
crtc_resp->mode_valid = 0;
|
|
}
|
|
}
|
|
drm_modeset_unlock_crtc(crtc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_set_config_internal - helper to call ->set_config
|
|
* @set: modeset config to set
|
|
*
|
|
* This is a little helper to wrap internal calls to the ->set_config driver
|
|
* interface. The only thing it adds is correct refcounting dance.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_set_config_internal(struct drm_mode_set *set)
|
|
{
|
|
struct drm_crtc *crtc = set->crtc;
|
|
struct drm_framebuffer *fb;
|
|
struct drm_crtc *tmp;
|
|
int ret;
|
|
|
|
/*
|
|
* NOTE: ->set_config can also disable other crtcs (if we steal all
|
|
* connectors from it), hence we need to refcount the fbs across all
|
|
* crtcs. Atomic modeset will have saner semantics ...
|
|
*/
|
|
drm_for_each_crtc(tmp, crtc->dev)
|
|
tmp->primary->old_fb = tmp->primary->fb;
|
|
|
|
fb = set->fb;
|
|
|
|
ret = crtc->funcs->set_config(set);
|
|
if (ret == 0) {
|
|
crtc->primary->crtc = crtc;
|
|
crtc->primary->fb = fb;
|
|
}
|
|
|
|
drm_for_each_crtc(tmp, crtc->dev) {
|
|
if (tmp->primary->fb)
|
|
drm_framebuffer_reference(tmp->primary->fb);
|
|
if (tmp->primary->old_fb)
|
|
drm_framebuffer_unreference(tmp->primary->old_fb);
|
|
tmp->primary->old_fb = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_set_config_internal);
|
|
|
|
/**
|
|
* drm_crtc_get_hv_timing - Fetches hdisplay/vdisplay for given mode
|
|
* @mode: mode to query
|
|
* @hdisplay: hdisplay value to fill in
|
|
* @vdisplay: vdisplay value to fill in
|
|
*
|
|
* The vdisplay value will be doubled if the specified mode is a stereo mode of
|
|
* the appropriate layout.
|
|
*/
|
|
void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
|
|
int *hdisplay, int *vdisplay)
|
|
{
|
|
struct drm_display_mode adjusted;
|
|
|
|
drm_mode_copy(&adjusted, mode);
|
|
drm_mode_set_crtcinfo(&adjusted, CRTC_STEREO_DOUBLE_ONLY);
|
|
*hdisplay = adjusted.crtc_hdisplay;
|
|
*vdisplay = adjusted.crtc_vdisplay;
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_get_hv_timing);
|
|
|
|
/**
|
|
* drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
|
|
* CRTC viewport
|
|
* @crtc: CRTC that framebuffer will be displayed on
|
|
* @x: x panning
|
|
* @y: y panning
|
|
* @mode: mode that framebuffer will be displayed under
|
|
* @fb: framebuffer to check size of
|
|
*/
|
|
int drm_crtc_check_viewport(const struct drm_crtc *crtc,
|
|
int x, int y,
|
|
const struct drm_display_mode *mode,
|
|
const struct drm_framebuffer *fb)
|
|
|
|
{
|
|
int hdisplay, vdisplay;
|
|
|
|
drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
|
|
|
|
if (crtc->state &&
|
|
drm_rotation_90_or_270(crtc->primary->state->rotation))
|
|
swap(hdisplay, vdisplay);
|
|
|
|
return drm_framebuffer_check_src_coords(x << 16, y << 16,
|
|
hdisplay << 16, vdisplay << 16,
|
|
fb);
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_check_viewport);
|
|
|
|
/**
|
|
* drm_mode_setcrtc - set CRTC configuration
|
|
* @dev: drm device for the ioctl
|
|
* @data: data pointer for the ioctl
|
|
* @file_priv: drm file for the ioctl call
|
|
*
|
|
* Build a new CRTC configuration based on user request.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_setcrtc(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
struct drm_mode_crtc *crtc_req = data;
|
|
struct drm_crtc *crtc;
|
|
struct drm_connector **connector_set = NULL, *connector;
|
|
struct drm_framebuffer *fb = NULL;
|
|
struct drm_display_mode *mode = NULL;
|
|
struct drm_mode_set set;
|
|
uint32_t __user *set_connectors_ptr;
|
|
int ret;
|
|
int i;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* Universal plane src offsets are only 16.16, prevent havoc for
|
|
* drivers using universal plane code internally.
|
|
*/
|
|
if (crtc_req->x & 0xffff0000 || crtc_req->y & 0xffff0000)
|
|
return -ERANGE;
|
|
|
|
drm_modeset_lock_all(dev);
|
|
crtc = drm_crtc_find(dev, crtc_req->crtc_id);
|
|
if (!crtc) {
|
|
DRM_DEBUG_KMS("Unknown CRTC ID %d\n", crtc_req->crtc_id);
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name);
|
|
|
|
if (crtc_req->mode_valid) {
|
|
/* If we have a mode we need a framebuffer. */
|
|
/* If we pass -1, set the mode with the currently bound fb */
|
|
if (crtc_req->fb_id == -1) {
|
|
if (!crtc->primary->fb) {
|
|
DRM_DEBUG_KMS("CRTC doesn't have current FB\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
fb = crtc->primary->fb;
|
|
/* Make refcounting symmetric with the lookup path. */
|
|
drm_framebuffer_reference(fb);
|
|
} else {
|
|
fb = drm_framebuffer_lookup(dev, crtc_req->fb_id);
|
|
if (!fb) {
|
|
DRM_DEBUG_KMS("Unknown FB ID%d\n",
|
|
crtc_req->fb_id);
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
mode = drm_mode_create(dev);
|
|
if (!mode) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
ret = drm_mode_convert_umode(mode, &crtc_req->mode);
|
|
if (ret) {
|
|
DRM_DEBUG_KMS("Invalid mode\n");
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* Check whether the primary plane supports the fb pixel format.
|
|
* Drivers not implementing the universal planes API use a
|
|
* default formats list provided by the DRM core which doesn't
|
|
* match real hardware capabilities. Skip the check in that
|
|
* case.
|
|
*/
|
|
if (!crtc->primary->format_default) {
|
|
ret = drm_plane_check_pixel_format(crtc->primary,
|
|
fb->pixel_format);
|
|
if (ret) {
|
|
char *format_name = drm_get_format_name(fb->pixel_format);
|
|
DRM_DEBUG_KMS("Invalid pixel format %s\n", format_name);
|
|
kfree(format_name);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
|
|
mode, fb);
|
|
if (ret)
|
|
goto out;
|
|
|
|
}
|
|
|
|
if (crtc_req->count_connectors == 0 && mode) {
|
|
DRM_DEBUG_KMS("Count connectors is 0 but mode set\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (crtc_req->count_connectors > 0 && (!mode || !fb)) {
|
|
DRM_DEBUG_KMS("Count connectors is %d but no mode or fb set\n",
|
|
crtc_req->count_connectors);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (crtc_req->count_connectors > 0) {
|
|
u32 out_id;
|
|
|
|
/* Avoid unbounded kernel memory allocation */
|
|
if (crtc_req->count_connectors > config->num_connector) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
connector_set = kmalloc_array(crtc_req->count_connectors,
|
|
sizeof(struct drm_connector *),
|
|
GFP_KERNEL);
|
|
if (!connector_set) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
for (i = 0; i < crtc_req->count_connectors; i++) {
|
|
connector_set[i] = NULL;
|
|
set_connectors_ptr = (uint32_t __user *)(unsigned long)crtc_req->set_connectors_ptr;
|
|
if (get_user(out_id, &set_connectors_ptr[i])) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
connector = drm_connector_lookup(dev, out_id);
|
|
if (!connector) {
|
|
DRM_DEBUG_KMS("Connector id %d unknown\n",
|
|
out_id);
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
|
|
connector->base.id,
|
|
connector->name);
|
|
|
|
connector_set[i] = connector;
|
|
}
|
|
}
|
|
|
|
set.crtc = crtc;
|
|
set.x = crtc_req->x;
|
|
set.y = crtc_req->y;
|
|
set.mode = mode;
|
|
set.connectors = connector_set;
|
|
set.num_connectors = crtc_req->count_connectors;
|
|
set.fb = fb;
|
|
ret = drm_mode_set_config_internal(&set);
|
|
|
|
out:
|
|
if (fb)
|
|
drm_framebuffer_unreference(fb);
|
|
|
|
if (connector_set) {
|
|
for (i = 0; i < crtc_req->count_connectors; i++) {
|
|
if (connector_set[i])
|
|
drm_connector_unreference(connector_set[i]);
|
|
}
|
|
}
|
|
kfree(connector_set);
|
|
drm_mode_destroy(dev, mode);
|
|
drm_modeset_unlock_all(dev);
|
|
return ret;
|
|
}
|
|
|
|
int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
|
|
struct drm_property *property,
|
|
uint64_t value)
|
|
{
|
|
int ret = -EINVAL;
|
|
struct drm_crtc *crtc = obj_to_crtc(obj);
|
|
|
|
if (crtc->funcs->set_property)
|
|
ret = crtc->funcs->set_property(crtc, property, value);
|
|
if (!ret)
|
|
drm_object_property_set_value(obj, property, value);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_config_reset - call ->reset callbacks
|
|
* @dev: drm device
|
|
*
|
|
* This functions calls all the crtc's, encoder's and connector's ->reset
|
|
* callback. Drivers can use this in e.g. their driver load or resume code to
|
|
* reset hardware and software state.
|
|
*/
|
|
void drm_mode_config_reset(struct drm_device *dev)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
struct drm_plane *plane;
|
|
struct drm_encoder *encoder;
|
|
struct drm_connector *connector;
|
|
|
|
drm_for_each_plane(plane, dev)
|
|
if (plane->funcs->reset)
|
|
plane->funcs->reset(plane);
|
|
|
|
drm_for_each_crtc(crtc, dev)
|
|
if (crtc->funcs->reset)
|
|
crtc->funcs->reset(crtc);
|
|
|
|
drm_for_each_encoder(encoder, dev)
|
|
if (encoder->funcs->reset)
|
|
encoder->funcs->reset(encoder);
|
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
drm_for_each_connector(connector, dev)
|
|
if (connector->funcs->reset)
|
|
connector->funcs->reset(connector);
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_config_reset);
|
|
|
|
/**
|
|
* drm_mode_create_dumb_ioctl - create a dumb backing storage buffer
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This creates a new dumb buffer in the driver's backing storage manager (GEM,
|
|
* TTM or something else entirely) and returns the resulting buffer handle. This
|
|
* handle can then be wrapped up into a framebuffer modeset object.
|
|
*
|
|
* Note that userspace is not allowed to use such objects for render
|
|
* acceleration - drivers must create their own private ioctls for such a use
|
|
* case.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_create_dumb_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_create_dumb *args = data;
|
|
u32 cpp, stride, size;
|
|
|
|
if (!dev->driver->dumb_create)
|
|
return -ENOSYS;
|
|
if (!args->width || !args->height || !args->bpp)
|
|
return -EINVAL;
|
|
|
|
/* overflow checks for 32bit size calculations */
|
|
/* NOTE: DIV_ROUND_UP() can overflow */
|
|
cpp = DIV_ROUND_UP(args->bpp, 8);
|
|
if (!cpp || cpp > 0xffffffffU / args->width)
|
|
return -EINVAL;
|
|
stride = cpp * args->width;
|
|
if (args->height > 0xffffffffU / stride)
|
|
return -EINVAL;
|
|
|
|
/* test for wrap-around */
|
|
size = args->height * stride;
|
|
if (PAGE_ALIGN(size) == 0)
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* handle, pitch and size are output parameters. Zero them out to
|
|
* prevent drivers from accidentally using uninitialized data. Since
|
|
* not all existing userspace is clearing these fields properly we
|
|
* cannot reject IOCTL with garbage in them.
|
|
*/
|
|
args->handle = 0;
|
|
args->pitch = 0;
|
|
args->size = 0;
|
|
|
|
return dev->driver->dumb_create(file_priv, dev, args);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_mmap_dumb_ioctl - create an mmap offset for a dumb backing storage buffer
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* Allocate an offset in the drm device node's address space to be able to
|
|
* memory map a dumb buffer.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_mmap_dumb_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_map_dumb *args = data;
|
|
|
|
/* call driver ioctl to get mmap offset */
|
|
if (!dev->driver->dumb_map_offset)
|
|
return -ENOSYS;
|
|
|
|
return dev->driver->dumb_map_offset(file_priv, dev, args->handle, &args->offset);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_destroy_dumb_ioctl - destroy a dumb backing strage buffer
|
|
* @dev: DRM device
|
|
* @data: ioctl data
|
|
* @file_priv: DRM file info
|
|
*
|
|
* This destroys the userspace handle for the given dumb backing storage buffer.
|
|
* Since buffer objects must be reference counted in the kernel a buffer object
|
|
* won't be immediately freed if a framebuffer modeset object still uses it.
|
|
*
|
|
* Called by the user via ioctl.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_destroy_dumb_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_destroy_dumb *args = data;
|
|
|
|
if (!dev->driver->dumb_destroy)
|
|
return -ENOSYS;
|
|
|
|
return dev->driver->dumb_destroy(file_priv, dev, args->handle);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_config_init - initialize DRM mode_configuration structure
|
|
* @dev: DRM device
|
|
*
|
|
* Initialize @dev's mode_config structure, used for tracking the graphics
|
|
* configuration of @dev.
|
|
*
|
|
* Since this initializes the modeset locks, no locking is possible. Which is no
|
|
* problem, since this should happen single threaded at init time. It is the
|
|
* driver's problem to ensure this guarantee.
|
|
*
|
|
*/
|
|
void drm_mode_config_init(struct drm_device *dev)
|
|
{
|
|
mutex_init(&dev->mode_config.mutex);
|
|
drm_modeset_lock_init(&dev->mode_config.connection_mutex);
|
|
mutex_init(&dev->mode_config.idr_mutex);
|
|
mutex_init(&dev->mode_config.fb_lock);
|
|
mutex_init(&dev->mode_config.blob_lock);
|
|
INIT_LIST_HEAD(&dev->mode_config.fb_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.crtc_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.connector_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.encoder_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.property_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.property_blob_list);
|
|
INIT_LIST_HEAD(&dev->mode_config.plane_list);
|
|
idr_init(&dev->mode_config.crtc_idr);
|
|
idr_init(&dev->mode_config.tile_idr);
|
|
ida_init(&dev->mode_config.connector_ida);
|
|
|
|
drm_modeset_lock_all(dev);
|
|
drm_mode_create_standard_properties(dev);
|
|
drm_modeset_unlock_all(dev);
|
|
|
|
/* Just to be sure */
|
|
dev->mode_config.num_fb = 0;
|
|
dev->mode_config.num_connector = 0;
|
|
dev->mode_config.num_crtc = 0;
|
|
dev->mode_config.num_encoder = 0;
|
|
dev->mode_config.num_overlay_plane = 0;
|
|
dev->mode_config.num_total_plane = 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_config_init);
|
|
|
|
/**
|
|
* drm_mode_config_cleanup - free up DRM mode_config info
|
|
* @dev: DRM device
|
|
*
|
|
* Free up all the connectors and CRTCs associated with this DRM device, then
|
|
* free up the framebuffers and associated buffer objects.
|
|
*
|
|
* Note that since this /should/ happen single-threaded at driver/device
|
|
* teardown time, no locking is required. It's the driver's job to ensure that
|
|
* this guarantee actually holds true.
|
|
*
|
|
* FIXME: cleanup any dangling user buffer objects too
|
|
*/
|
|
void drm_mode_config_cleanup(struct drm_device *dev)
|
|
{
|
|
struct drm_connector *connector, *ot;
|
|
struct drm_crtc *crtc, *ct;
|
|
struct drm_encoder *encoder, *enct;
|
|
struct drm_framebuffer *fb, *fbt;
|
|
struct drm_property *property, *pt;
|
|
struct drm_property_blob *blob, *bt;
|
|
struct drm_plane *plane, *plt;
|
|
|
|
list_for_each_entry_safe(encoder, enct, &dev->mode_config.encoder_list,
|
|
head) {
|
|
encoder->funcs->destroy(encoder);
|
|
}
|
|
|
|
list_for_each_entry_safe(connector, ot,
|
|
&dev->mode_config.connector_list, head) {
|
|
connector->funcs->destroy(connector);
|
|
}
|
|
|
|
list_for_each_entry_safe(property, pt, &dev->mode_config.property_list,
|
|
head) {
|
|
drm_property_destroy(dev, property);
|
|
}
|
|
|
|
list_for_each_entry_safe(plane, plt, &dev->mode_config.plane_list,
|
|
head) {
|
|
plane->funcs->destroy(plane);
|
|
}
|
|
|
|
list_for_each_entry_safe(crtc, ct, &dev->mode_config.crtc_list, head) {
|
|
crtc->funcs->destroy(crtc);
|
|
}
|
|
|
|
list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
|
|
head_global) {
|
|
drm_property_unreference_blob(blob);
|
|
}
|
|
|
|
/*
|
|
* Single-threaded teardown context, so it's not required to grab the
|
|
* fb_lock to protect against concurrent fb_list access. Contrary, it
|
|
* would actually deadlock with the drm_framebuffer_cleanup function.
|
|
*
|
|
* Also, if there are any framebuffers left, that's a driver leak now,
|
|
* so politely WARN about this.
|
|
*/
|
|
WARN_ON(!list_empty(&dev->mode_config.fb_list));
|
|
list_for_each_entry_safe(fb, fbt, &dev->mode_config.fb_list, head) {
|
|
drm_framebuffer_free(&fb->base.refcount);
|
|
}
|
|
|
|
ida_destroy(&dev->mode_config.connector_ida);
|
|
idr_destroy(&dev->mode_config.tile_idr);
|
|
idr_destroy(&dev->mode_config.crtc_idr);
|
|
drm_modeset_lock_fini(&dev->mode_config.connection_mutex);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_config_cleanup);
|
|
|
|
/**
|
|
* DOC: Tile group
|
|
*
|
|
* Tile groups are used to represent tiled monitors with a unique
|
|
* integer identifier. Tiled monitors using DisplayID v1.3 have
|
|
* a unique 8-byte handle, we store this in a tile group, so we
|
|
* have a common identifier for all tiles in a monitor group.
|
|
*/
|
|
static void drm_tile_group_free(struct kref *kref)
|
|
{
|
|
struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
|
|
struct drm_device *dev = tg->dev;
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
idr_remove(&dev->mode_config.tile_idr, tg->id);
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
kfree(tg);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_put_tile_group - drop a reference to a tile group.
|
|
* @dev: DRM device
|
|
* @tg: tile group to drop reference to.
|
|
*
|
|
* drop reference to tile group and free if 0.
|
|
*/
|
|
void drm_mode_put_tile_group(struct drm_device *dev,
|
|
struct drm_tile_group *tg)
|
|
{
|
|
kref_put(&tg->refcount, drm_tile_group_free);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_get_tile_group - get a reference to an existing tile group
|
|
* @dev: DRM device
|
|
* @topology: 8-bytes unique per monitor.
|
|
*
|
|
* Use the unique bytes to get a reference to an existing tile group.
|
|
*
|
|
* RETURNS:
|
|
* tile group or NULL if not found.
|
|
*/
|
|
struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
|
|
char topology[8])
|
|
{
|
|
struct drm_tile_group *tg;
|
|
int id;
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
|
|
if (!memcmp(tg->group_data, topology, 8)) {
|
|
if (!kref_get_unless_zero(&tg->refcount))
|
|
tg = NULL;
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return tg;
|
|
}
|
|
}
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_get_tile_group);
|
|
|
|
/**
|
|
* drm_mode_create_tile_group - create a tile group from a displayid description
|
|
* @dev: DRM device
|
|
* @topology: 8-bytes unique per monitor.
|
|
*
|
|
* Create a tile group for the unique monitor, and get a unique
|
|
* identifier for the tile group.
|
|
*
|
|
* RETURNS:
|
|
* new tile group or error.
|
|
*/
|
|
struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
|
|
char topology[8])
|
|
{
|
|
struct drm_tile_group *tg;
|
|
int ret;
|
|
|
|
tg = kzalloc(sizeof(*tg), GFP_KERNEL);
|
|
if (!tg)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
kref_init(&tg->refcount);
|
|
memcpy(tg->group_data, topology, 8);
|
|
tg->dev = dev;
|
|
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
|
|
if (ret >= 0) {
|
|
tg->id = ret;
|
|
} else {
|
|
kfree(tg);
|
|
tg = ERR_PTR(ret);
|
|
}
|
|
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return tg;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_tile_group);
|