1414 строки
42 KiB
C
1414 строки
42 KiB
C
/*
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* Copyright (C) 2014 Red Hat
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* Copyright (C) 2014 Intel Corp.
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* Copyright (C) 2018 Intel Corp.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Rob Clark <robdclark@gmail.com>
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*/
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#include <drm/drm_atomic_uapi.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_print.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_writeback.h>
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#include <drm/drm_vblank.h>
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#include <linux/dma-fence.h>
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#include <linux/uaccess.h>
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#include <linux/sync_file.h>
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#include <linux/file.h>
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#include "drm_crtc_internal.h"
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/**
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* DOC: overview
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*
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* This file contains the marshalling and demarshalling glue for the atomic UAPI
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* in all its forms: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and
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* SET_PROPERTY IOCTLs. Plus interface functions for compatibility helpers and
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* drivers which have special needs to construct their own atomic updates, e.g.
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* for load detect or similiar.
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*/
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/**
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* drm_atomic_set_mode_for_crtc - set mode for CRTC
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* @state: the CRTC whose incoming state to update
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* @mode: kernel-internal mode to use for the CRTC, or NULL to disable
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*
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* Set a mode (originating from the kernel) on the desired CRTC state and update
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* the enable property.
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*
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* RETURNS:
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* Zero on success, error code on failure. Cannot return -EDEADLK.
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*/
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int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
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const struct drm_display_mode *mode)
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{
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struct drm_crtc *crtc = state->crtc;
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struct drm_mode_modeinfo umode;
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/* Early return for no change. */
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if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
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return 0;
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drm_property_blob_put(state->mode_blob);
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state->mode_blob = NULL;
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if (mode) {
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drm_mode_convert_to_umode(&umode, mode);
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state->mode_blob =
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drm_property_create_blob(state->crtc->dev,
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sizeof(umode),
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&umode);
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if (IS_ERR(state->mode_blob))
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return PTR_ERR(state->mode_blob);
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drm_mode_copy(&state->mode, mode);
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state->enable = true;
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DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
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mode->name, crtc->base.id, crtc->name, state);
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} else {
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memset(&state->mode, 0, sizeof(state->mode));
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state->enable = false;
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DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
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crtc->base.id, crtc->name, state);
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}
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return 0;
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}
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EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
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/**
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* drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
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* @state: the CRTC whose incoming state to update
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* @blob: pointer to blob property to use for mode
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*
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* Set a mode (originating from a blob property) on the desired CRTC state.
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* This function will take a reference on the blob property for the CRTC state,
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* and release the reference held on the state's existing mode property, if any
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* was set.
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*
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* RETURNS:
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* Zero on success, error code on failure. Cannot return -EDEADLK.
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*/
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int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
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struct drm_property_blob *blob)
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{
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struct drm_crtc *crtc = state->crtc;
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if (blob == state->mode_blob)
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return 0;
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drm_property_blob_put(state->mode_blob);
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state->mode_blob = NULL;
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memset(&state->mode, 0, sizeof(state->mode));
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if (blob) {
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int ret;
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if (blob->length != sizeof(struct drm_mode_modeinfo)) {
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DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
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crtc->base.id, crtc->name,
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blob->length);
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return -EINVAL;
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}
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ret = drm_mode_convert_umode(crtc->dev,
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&state->mode, blob->data);
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if (ret) {
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DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
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crtc->base.id, crtc->name,
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ret, drm_get_mode_status_name(state->mode.status));
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drm_mode_debug_printmodeline(&state->mode);
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return -EINVAL;
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}
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state->mode_blob = drm_property_blob_get(blob);
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state->enable = true;
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DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
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state->mode.name, crtc->base.id, crtc->name,
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state);
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} else {
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state->enable = false;
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DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
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crtc->base.id, crtc->name, state);
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}
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return 0;
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}
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EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
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/**
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* drm_atomic_set_crtc_for_plane - set crtc for plane
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* @plane_state: the plane whose incoming state to update
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* @crtc: crtc to use for the plane
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*
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* Changing the assigned crtc for a plane requires us to grab the lock and state
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* for the new crtc, as needed. This function takes care of all these details
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* besides updating the pointer in the state object itself.
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*
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* Returns:
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* 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
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* then the w/w mutex code has detected a deadlock and the entire atomic
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* sequence must be restarted. All other errors are fatal.
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*/
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int
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drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
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struct drm_crtc *crtc)
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{
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struct drm_plane *plane = plane_state->plane;
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struct drm_crtc_state *crtc_state;
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/* Nothing to do for same crtc*/
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if (plane_state->crtc == crtc)
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return 0;
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if (plane_state->crtc) {
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crtc_state = drm_atomic_get_crtc_state(plane_state->state,
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plane_state->crtc);
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if (WARN_ON(IS_ERR(crtc_state)))
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return PTR_ERR(crtc_state);
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crtc_state->plane_mask &= ~drm_plane_mask(plane);
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}
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plane_state->crtc = crtc;
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if (crtc) {
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crtc_state = drm_atomic_get_crtc_state(plane_state->state,
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crtc);
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if (IS_ERR(crtc_state))
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return PTR_ERR(crtc_state);
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crtc_state->plane_mask |= drm_plane_mask(plane);
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}
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if (crtc)
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DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
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plane->base.id, plane->name, plane_state,
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crtc->base.id, crtc->name);
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else
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DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
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plane->base.id, plane->name, plane_state);
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return 0;
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}
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EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
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/**
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* drm_atomic_set_fb_for_plane - set framebuffer for plane
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* @plane_state: atomic state object for the plane
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* @fb: fb to use for the plane
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*
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* Changing the assigned framebuffer for a plane requires us to grab a reference
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* to the new fb and drop the reference to the old fb, if there is one. This
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* function takes care of all these details besides updating the pointer in the
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* state object itself.
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*/
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void
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drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
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struct drm_framebuffer *fb)
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{
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struct drm_plane *plane = plane_state->plane;
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if (fb)
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DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n",
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fb->base.id, plane->base.id, plane->name,
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plane_state);
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else
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DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
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plane->base.id, plane->name, plane_state);
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drm_framebuffer_assign(&plane_state->fb, fb);
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}
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EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
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/**
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* drm_atomic_set_fence_for_plane - set fence for plane
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* @plane_state: atomic state object for the plane
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* @fence: dma_fence to use for the plane
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*
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* Helper to setup the plane_state fence in case it is not set yet.
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* By using this drivers doesn't need to worry if the user choose
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* implicit or explicit fencing.
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*
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* This function will not set the fence to the state if it was set
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* via explicit fencing interfaces on the atomic ioctl. In that case it will
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* drop the reference to the fence as we are not storing it anywhere.
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* Otherwise, if &drm_plane_state.fence is not set this function we just set it
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* with the received implicit fence. In both cases this function consumes a
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* reference for @fence.
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*
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* This way explicit fencing can be used to overrule implicit fencing, which is
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* important to make explicit fencing use-cases work: One example is using one
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* buffer for 2 screens with different refresh rates. Implicit fencing will
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* clamp rendering to the refresh rate of the slower screen, whereas explicit
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* fence allows 2 independent render and display loops on a single buffer. If a
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* driver allows obeys both implicit and explicit fences for plane updates, then
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* it will break all the benefits of explicit fencing.
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*/
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void
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drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
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struct dma_fence *fence)
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{
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if (plane_state->fence) {
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dma_fence_put(fence);
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return;
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}
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plane_state->fence = fence;
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}
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EXPORT_SYMBOL(drm_atomic_set_fence_for_plane);
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/**
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* drm_atomic_set_crtc_for_connector - set crtc for connector
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* @conn_state: atomic state object for the connector
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* @crtc: crtc to use for the connector
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*
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* Changing the assigned crtc for a connector requires us to grab the lock and
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* state for the new crtc, as needed. This function takes care of all these
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* details besides updating the pointer in the state object itself.
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*
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* Returns:
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* 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
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* then the w/w mutex code has detected a deadlock and the entire atomic
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* sequence must be restarted. All other errors are fatal.
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*/
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int
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drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
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struct drm_crtc *crtc)
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{
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struct drm_connector *connector = conn_state->connector;
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struct drm_crtc_state *crtc_state;
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if (conn_state->crtc == crtc)
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return 0;
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if (conn_state->crtc) {
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crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
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conn_state->crtc);
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crtc_state->connector_mask &=
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~drm_connector_mask(conn_state->connector);
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drm_connector_put(conn_state->connector);
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conn_state->crtc = NULL;
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}
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if (crtc) {
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crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
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if (IS_ERR(crtc_state))
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return PTR_ERR(crtc_state);
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crtc_state->connector_mask |=
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drm_connector_mask(conn_state->connector);
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drm_connector_get(conn_state->connector);
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conn_state->crtc = crtc;
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DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
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connector->base.id, connector->name,
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conn_state, crtc->base.id, crtc->name);
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} else {
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DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
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connector->base.id, connector->name,
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conn_state);
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}
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return 0;
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}
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EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
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static void set_out_fence_for_crtc(struct drm_atomic_state *state,
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struct drm_crtc *crtc, s32 __user *fence_ptr)
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{
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state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
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}
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static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
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struct drm_crtc *crtc)
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{
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s32 __user *fence_ptr;
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fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
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state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
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return fence_ptr;
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}
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static int set_out_fence_for_connector(struct drm_atomic_state *state,
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struct drm_connector *connector,
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s32 __user *fence_ptr)
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{
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unsigned int index = drm_connector_index(connector);
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if (!fence_ptr)
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return 0;
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if (put_user(-1, fence_ptr))
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return -EFAULT;
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state->connectors[index].out_fence_ptr = fence_ptr;
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return 0;
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}
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static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
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struct drm_connector *connector)
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{
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unsigned int index = drm_connector_index(connector);
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s32 __user *fence_ptr;
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fence_ptr = state->connectors[index].out_fence_ptr;
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state->connectors[index].out_fence_ptr = NULL;
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return fence_ptr;
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}
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static int
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drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
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struct drm_property_blob **blob,
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uint64_t blob_id,
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ssize_t expected_size,
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ssize_t expected_elem_size,
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bool *replaced)
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{
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struct drm_property_blob *new_blob = NULL;
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if (blob_id != 0) {
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new_blob = drm_property_lookup_blob(dev, blob_id);
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if (new_blob == NULL)
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return -EINVAL;
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if (expected_size > 0 &&
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new_blob->length != expected_size) {
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drm_property_blob_put(new_blob);
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return -EINVAL;
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}
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if (expected_elem_size > 0 &&
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new_blob->length % expected_elem_size != 0) {
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drm_property_blob_put(new_blob);
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return -EINVAL;
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}
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}
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*replaced |= drm_property_replace_blob(blob, new_blob);
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drm_property_blob_put(new_blob);
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return 0;
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}
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static int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
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struct drm_crtc_state *state, struct drm_property *property,
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uint64_t val)
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{
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struct drm_device *dev = crtc->dev;
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struct drm_mode_config *config = &dev->mode_config;
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bool replaced = false;
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int ret;
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if (property == config->prop_active)
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state->active = val;
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else if (property == config->prop_mode_id) {
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struct drm_property_blob *mode =
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drm_property_lookup_blob(dev, val);
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ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
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drm_property_blob_put(mode);
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return ret;
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} else if (property == config->prop_vrr_enabled) {
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state->vrr_enabled = val;
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} else if (property == config->degamma_lut_property) {
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ret = drm_atomic_replace_property_blob_from_id(dev,
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&state->degamma_lut,
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val,
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-1, sizeof(struct drm_color_lut),
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&replaced);
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state->color_mgmt_changed |= replaced;
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return ret;
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} else if (property == config->ctm_property) {
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ret = drm_atomic_replace_property_blob_from_id(dev,
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&state->ctm,
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val,
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sizeof(struct drm_color_ctm), -1,
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&replaced);
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state->color_mgmt_changed |= replaced;
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return ret;
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} else if (property == config->gamma_lut_property) {
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ret = drm_atomic_replace_property_blob_from_id(dev,
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&state->gamma_lut,
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val,
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-1, sizeof(struct drm_color_lut),
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&replaced);
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state->color_mgmt_changed |= replaced;
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return ret;
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} else if (property == config->prop_out_fence_ptr) {
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s32 __user *fence_ptr = u64_to_user_ptr(val);
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if (!fence_ptr)
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return 0;
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if (put_user(-1, fence_ptr))
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return -EFAULT;
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set_out_fence_for_crtc(state->state, crtc, fence_ptr);
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} else if (crtc->funcs->atomic_set_property) {
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return crtc->funcs->atomic_set_property(crtc, state, property, val);
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} else {
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DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
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crtc->base.id, crtc->name,
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property->base.id, property->name);
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return -EINVAL;
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}
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return 0;
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|
}
|
|
|
|
static int
|
|
drm_atomic_crtc_get_property(struct drm_crtc *crtc,
|
|
const struct drm_crtc_state *state,
|
|
struct drm_property *property, uint64_t *val)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
if (property == config->prop_active)
|
|
*val = state->active;
|
|
else if (property == config->prop_mode_id)
|
|
*val = (state->mode_blob) ? state->mode_blob->base.id : 0;
|
|
else if (property == config->prop_vrr_enabled)
|
|
*val = state->vrr_enabled;
|
|
else if (property == config->degamma_lut_property)
|
|
*val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
|
|
else if (property == config->ctm_property)
|
|
*val = (state->ctm) ? state->ctm->base.id : 0;
|
|
else if (property == config->gamma_lut_property)
|
|
*val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
|
|
else if (property == config->prop_out_fence_ptr)
|
|
*val = 0;
|
|
else if (crtc->funcs->atomic_get_property)
|
|
return crtc->funcs->atomic_get_property(crtc, state, property, val);
|
|
else
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int drm_atomic_plane_set_property(struct drm_plane *plane,
|
|
struct drm_plane_state *state, struct drm_property *property,
|
|
uint64_t val)
|
|
{
|
|
struct drm_device *dev = plane->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
bool replaced = false;
|
|
int ret;
|
|
|
|
if (property == config->prop_fb_id) {
|
|
struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
|
|
drm_atomic_set_fb_for_plane(state, fb);
|
|
if (fb)
|
|
drm_framebuffer_put(fb);
|
|
} else if (property == config->prop_in_fence_fd) {
|
|
if (state->fence)
|
|
return -EINVAL;
|
|
|
|
if (U642I64(val) == -1)
|
|
return 0;
|
|
|
|
state->fence = sync_file_get_fence(val);
|
|
if (!state->fence)
|
|
return -EINVAL;
|
|
|
|
} else if (property == config->prop_crtc_id) {
|
|
struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
|
|
return drm_atomic_set_crtc_for_plane(state, crtc);
|
|
} else if (property == config->prop_crtc_x) {
|
|
state->crtc_x = U642I64(val);
|
|
} else if (property == config->prop_crtc_y) {
|
|
state->crtc_y = U642I64(val);
|
|
} else if (property == config->prop_crtc_w) {
|
|
state->crtc_w = val;
|
|
} else if (property == config->prop_crtc_h) {
|
|
state->crtc_h = val;
|
|
} else if (property == config->prop_src_x) {
|
|
state->src_x = val;
|
|
} else if (property == config->prop_src_y) {
|
|
state->src_y = val;
|
|
} else if (property == config->prop_src_w) {
|
|
state->src_w = val;
|
|
} else if (property == config->prop_src_h) {
|
|
state->src_h = val;
|
|
} else if (property == plane->alpha_property) {
|
|
state->alpha = val;
|
|
} else if (property == plane->blend_mode_property) {
|
|
state->pixel_blend_mode = val;
|
|
} else if (property == plane->rotation_property) {
|
|
if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
|
|
plane->base.id, plane->name, val);
|
|
return -EINVAL;
|
|
}
|
|
state->rotation = val;
|
|
} else if (property == plane->zpos_property) {
|
|
state->zpos = val;
|
|
} else if (property == plane->color_encoding_property) {
|
|
state->color_encoding = val;
|
|
} else if (property == plane->color_range_property) {
|
|
state->color_range = val;
|
|
} else if (property == config->prop_fb_damage_clips) {
|
|
ret = drm_atomic_replace_property_blob_from_id(dev,
|
|
&state->fb_damage_clips,
|
|
val,
|
|
-1,
|
|
sizeof(struct drm_rect),
|
|
&replaced);
|
|
return ret;
|
|
} else if (plane->funcs->atomic_set_property) {
|
|
return plane->funcs->atomic_set_property(plane, state,
|
|
property, val);
|
|
} else {
|
|
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
|
|
plane->base.id, plane->name,
|
|
property->base.id, property->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
drm_atomic_plane_get_property(struct drm_plane *plane,
|
|
const struct drm_plane_state *state,
|
|
struct drm_property *property, uint64_t *val)
|
|
{
|
|
struct drm_device *dev = plane->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
if (property == config->prop_fb_id) {
|
|
*val = (state->fb) ? state->fb->base.id : 0;
|
|
} else if (property == config->prop_in_fence_fd) {
|
|
*val = -1;
|
|
} else if (property == config->prop_crtc_id) {
|
|
*val = (state->crtc) ? state->crtc->base.id : 0;
|
|
} else if (property == config->prop_crtc_x) {
|
|
*val = I642U64(state->crtc_x);
|
|
} else if (property == config->prop_crtc_y) {
|
|
*val = I642U64(state->crtc_y);
|
|
} else if (property == config->prop_crtc_w) {
|
|
*val = state->crtc_w;
|
|
} else if (property == config->prop_crtc_h) {
|
|
*val = state->crtc_h;
|
|
} else if (property == config->prop_src_x) {
|
|
*val = state->src_x;
|
|
} else if (property == config->prop_src_y) {
|
|
*val = state->src_y;
|
|
} else if (property == config->prop_src_w) {
|
|
*val = state->src_w;
|
|
} else if (property == config->prop_src_h) {
|
|
*val = state->src_h;
|
|
} else if (property == plane->alpha_property) {
|
|
*val = state->alpha;
|
|
} else if (property == plane->blend_mode_property) {
|
|
*val = state->pixel_blend_mode;
|
|
} else if (property == plane->rotation_property) {
|
|
*val = state->rotation;
|
|
} else if (property == plane->zpos_property) {
|
|
*val = state->zpos;
|
|
} else if (property == plane->color_encoding_property) {
|
|
*val = state->color_encoding;
|
|
} else if (property == plane->color_range_property) {
|
|
*val = state->color_range;
|
|
} else if (property == config->prop_fb_damage_clips) {
|
|
*val = (state->fb_damage_clips) ?
|
|
state->fb_damage_clips->base.id : 0;
|
|
} else if (plane->funcs->atomic_get_property) {
|
|
return plane->funcs->atomic_get_property(plane, state, property, val);
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct drm_writeback_job *
|
|
drm_atomic_get_writeback_job(struct drm_connector_state *conn_state)
|
|
{
|
|
WARN_ON(conn_state->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK);
|
|
|
|
if (!conn_state->writeback_job)
|
|
conn_state->writeback_job =
|
|
kzalloc(sizeof(*conn_state->writeback_job), GFP_KERNEL);
|
|
|
|
return conn_state->writeback_job;
|
|
}
|
|
|
|
static int drm_atomic_set_writeback_fb_for_connector(
|
|
struct drm_connector_state *conn_state,
|
|
struct drm_framebuffer *fb)
|
|
{
|
|
struct drm_writeback_job *job =
|
|
drm_atomic_get_writeback_job(conn_state);
|
|
if (!job)
|
|
return -ENOMEM;
|
|
|
|
drm_framebuffer_assign(&job->fb, fb);
|
|
|
|
if (fb)
|
|
DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n",
|
|
fb->base.id, conn_state);
|
|
else
|
|
DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n",
|
|
conn_state);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int drm_atomic_connector_set_property(struct drm_connector *connector,
|
|
struct drm_connector_state *state, struct drm_property *property,
|
|
uint64_t val)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
if (property == config->prop_crtc_id) {
|
|
struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
|
|
return drm_atomic_set_crtc_for_connector(state, crtc);
|
|
} else if (property == config->dpms_property) {
|
|
/* setting DPMS property requires special handling, which
|
|
* is done in legacy setprop path for us. Disallow (for
|
|
* now?) atomic writes to DPMS property:
|
|
*/
|
|
return -EINVAL;
|
|
} else if (property == config->tv_select_subconnector_property) {
|
|
state->tv.subconnector = val;
|
|
} else if (property == config->tv_left_margin_property) {
|
|
state->tv.margins.left = val;
|
|
} else if (property == config->tv_right_margin_property) {
|
|
state->tv.margins.right = val;
|
|
} else if (property == config->tv_top_margin_property) {
|
|
state->tv.margins.top = val;
|
|
} else if (property == config->tv_bottom_margin_property) {
|
|
state->tv.margins.bottom = val;
|
|
} else if (property == config->tv_mode_property) {
|
|
state->tv.mode = val;
|
|
} else if (property == config->tv_brightness_property) {
|
|
state->tv.brightness = val;
|
|
} else if (property == config->tv_contrast_property) {
|
|
state->tv.contrast = val;
|
|
} else if (property == config->tv_flicker_reduction_property) {
|
|
state->tv.flicker_reduction = val;
|
|
} else if (property == config->tv_overscan_property) {
|
|
state->tv.overscan = val;
|
|
} else if (property == config->tv_saturation_property) {
|
|
state->tv.saturation = val;
|
|
} else if (property == config->tv_hue_property) {
|
|
state->tv.hue = val;
|
|
} else if (property == config->link_status_property) {
|
|
/* Never downgrade from GOOD to BAD on userspace's request here,
|
|
* only hw issues can do that.
|
|
*
|
|
* For an atomic property the userspace doesn't need to be able
|
|
* to understand all the properties, but needs to be able to
|
|
* restore the state it wants on VT switch. So if the userspace
|
|
* tries to change the link_status from GOOD to BAD, driver
|
|
* silently rejects it and returns a 0. This prevents userspace
|
|
* from accidently breaking the display when it restores the
|
|
* state.
|
|
*/
|
|
if (state->link_status != DRM_LINK_STATUS_GOOD)
|
|
state->link_status = val;
|
|
} else if (property == config->aspect_ratio_property) {
|
|
state->picture_aspect_ratio = val;
|
|
} else if (property == config->content_type_property) {
|
|
state->content_type = val;
|
|
} else if (property == connector->scaling_mode_property) {
|
|
state->scaling_mode = val;
|
|
} else if (property == connector->content_protection_property) {
|
|
if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
|
|
DRM_DEBUG_KMS("only drivers can set CP Enabled\n");
|
|
return -EINVAL;
|
|
}
|
|
state->content_protection = val;
|
|
} else if (property == config->writeback_fb_id_property) {
|
|
struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
|
|
int ret = drm_atomic_set_writeback_fb_for_connector(state, fb);
|
|
if (fb)
|
|
drm_framebuffer_put(fb);
|
|
return ret;
|
|
} else if (property == config->writeback_out_fence_ptr_property) {
|
|
s32 __user *fence_ptr = u64_to_user_ptr(val);
|
|
|
|
return set_out_fence_for_connector(state->state, connector,
|
|
fence_ptr);
|
|
} else if (property == connector->max_bpc_property) {
|
|
state->max_requested_bpc = val;
|
|
} else if (connector->funcs->atomic_set_property) {
|
|
return connector->funcs->atomic_set_property(connector,
|
|
state, property, val);
|
|
} else {
|
|
DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
|
|
connector->base.id, connector->name,
|
|
property->base.id, property->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
drm_atomic_connector_get_property(struct drm_connector *connector,
|
|
const struct drm_connector_state *state,
|
|
struct drm_property *property, uint64_t *val)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
if (property == config->prop_crtc_id) {
|
|
*val = (state->crtc) ? state->crtc->base.id : 0;
|
|
} else if (property == config->dpms_property) {
|
|
*val = connector->dpms;
|
|
} else if (property == config->tv_select_subconnector_property) {
|
|
*val = state->tv.subconnector;
|
|
} else if (property == config->tv_left_margin_property) {
|
|
*val = state->tv.margins.left;
|
|
} else if (property == config->tv_right_margin_property) {
|
|
*val = state->tv.margins.right;
|
|
} else if (property == config->tv_top_margin_property) {
|
|
*val = state->tv.margins.top;
|
|
} else if (property == config->tv_bottom_margin_property) {
|
|
*val = state->tv.margins.bottom;
|
|
} else if (property == config->tv_mode_property) {
|
|
*val = state->tv.mode;
|
|
} else if (property == config->tv_brightness_property) {
|
|
*val = state->tv.brightness;
|
|
} else if (property == config->tv_contrast_property) {
|
|
*val = state->tv.contrast;
|
|
} else if (property == config->tv_flicker_reduction_property) {
|
|
*val = state->tv.flicker_reduction;
|
|
} else if (property == config->tv_overscan_property) {
|
|
*val = state->tv.overscan;
|
|
} else if (property == config->tv_saturation_property) {
|
|
*val = state->tv.saturation;
|
|
} else if (property == config->tv_hue_property) {
|
|
*val = state->tv.hue;
|
|
} else if (property == config->link_status_property) {
|
|
*val = state->link_status;
|
|
} else if (property == config->aspect_ratio_property) {
|
|
*val = state->picture_aspect_ratio;
|
|
} else if (property == config->content_type_property) {
|
|
*val = state->content_type;
|
|
} else if (property == connector->scaling_mode_property) {
|
|
*val = state->scaling_mode;
|
|
} else if (property == connector->content_protection_property) {
|
|
*val = state->content_protection;
|
|
} else if (property == config->writeback_fb_id_property) {
|
|
/* Writeback framebuffer is one-shot, write and forget */
|
|
*val = 0;
|
|
} else if (property == config->writeback_out_fence_ptr_property) {
|
|
*val = 0;
|
|
} else if (property == connector->max_bpc_property) {
|
|
*val = state->max_requested_bpc;
|
|
} else if (connector->funcs->atomic_get_property) {
|
|
return connector->funcs->atomic_get_property(connector,
|
|
state, property, val);
|
|
} else {
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int drm_atomic_get_property(struct drm_mode_object *obj,
|
|
struct drm_property *property, uint64_t *val)
|
|
{
|
|
struct drm_device *dev = property->dev;
|
|
int ret;
|
|
|
|
switch (obj->type) {
|
|
case DRM_MODE_OBJECT_CONNECTOR: {
|
|
struct drm_connector *connector = obj_to_connector(obj);
|
|
WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
|
|
ret = drm_atomic_connector_get_property(connector,
|
|
connector->state, property, val);
|
|
break;
|
|
}
|
|
case DRM_MODE_OBJECT_CRTC: {
|
|
struct drm_crtc *crtc = obj_to_crtc(obj);
|
|
WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
|
|
ret = drm_atomic_crtc_get_property(crtc,
|
|
crtc->state, property, val);
|
|
break;
|
|
}
|
|
case DRM_MODE_OBJECT_PLANE: {
|
|
struct drm_plane *plane = obj_to_plane(obj);
|
|
WARN_ON(!drm_modeset_is_locked(&plane->mutex));
|
|
ret = drm_atomic_plane_get_property(plane,
|
|
plane->state, property, val);
|
|
break;
|
|
}
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* The big monster ioctl
|
|
*/
|
|
|
|
static struct drm_pending_vblank_event *create_vblank_event(
|
|
struct drm_crtc *crtc, uint64_t user_data)
|
|
{
|
|
struct drm_pending_vblank_event *e = NULL;
|
|
|
|
e = kzalloc(sizeof *e, GFP_KERNEL);
|
|
if (!e)
|
|
return NULL;
|
|
|
|
e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
|
|
e->event.base.length = sizeof(e->event);
|
|
e->event.vbl.crtc_id = crtc->base.id;
|
|
e->event.vbl.user_data = user_data;
|
|
|
|
return e;
|
|
}
|
|
|
|
int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
|
|
struct drm_connector *connector,
|
|
int mode)
|
|
{
|
|
struct drm_connector *tmp_connector;
|
|
struct drm_connector_state *new_conn_state;
|
|
struct drm_crtc *crtc;
|
|
struct drm_crtc_state *crtc_state;
|
|
int i, ret, old_mode = connector->dpms;
|
|
bool active = false;
|
|
|
|
ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
|
|
state->acquire_ctx);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (mode != DRM_MODE_DPMS_ON)
|
|
mode = DRM_MODE_DPMS_OFF;
|
|
connector->dpms = mode;
|
|
|
|
crtc = connector->state->crtc;
|
|
if (!crtc)
|
|
goto out;
|
|
ret = drm_atomic_add_affected_connectors(state, crtc);
|
|
if (ret)
|
|
goto out;
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
|
if (IS_ERR(crtc_state)) {
|
|
ret = PTR_ERR(crtc_state);
|
|
goto out;
|
|
}
|
|
|
|
for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
|
|
if (new_conn_state->crtc != crtc)
|
|
continue;
|
|
if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
|
|
active = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
crtc_state->active = active;
|
|
ret = drm_atomic_commit(state);
|
|
out:
|
|
if (ret != 0)
|
|
connector->dpms = old_mode;
|
|
return ret;
|
|
}
|
|
|
|
int drm_atomic_set_property(struct drm_atomic_state *state,
|
|
struct drm_mode_object *obj,
|
|
struct drm_property *prop,
|
|
uint64_t prop_value)
|
|
{
|
|
struct drm_mode_object *ref;
|
|
int ret;
|
|
|
|
if (!drm_property_change_valid_get(prop, prop_value, &ref))
|
|
return -EINVAL;
|
|
|
|
switch (obj->type) {
|
|
case DRM_MODE_OBJECT_CONNECTOR: {
|
|
struct drm_connector *connector = obj_to_connector(obj);
|
|
struct drm_connector_state *connector_state;
|
|
|
|
connector_state = drm_atomic_get_connector_state(state, connector);
|
|
if (IS_ERR(connector_state)) {
|
|
ret = PTR_ERR(connector_state);
|
|
break;
|
|
}
|
|
|
|
ret = drm_atomic_connector_set_property(connector,
|
|
connector_state, prop, prop_value);
|
|
break;
|
|
}
|
|
case DRM_MODE_OBJECT_CRTC: {
|
|
struct drm_crtc *crtc = obj_to_crtc(obj);
|
|
struct drm_crtc_state *crtc_state;
|
|
|
|
crtc_state = drm_atomic_get_crtc_state(state, crtc);
|
|
if (IS_ERR(crtc_state)) {
|
|
ret = PTR_ERR(crtc_state);
|
|
break;
|
|
}
|
|
|
|
ret = drm_atomic_crtc_set_property(crtc,
|
|
crtc_state, prop, prop_value);
|
|
break;
|
|
}
|
|
case DRM_MODE_OBJECT_PLANE: {
|
|
struct drm_plane *plane = obj_to_plane(obj);
|
|
struct drm_plane_state *plane_state;
|
|
|
|
plane_state = drm_atomic_get_plane_state(state, plane);
|
|
if (IS_ERR(plane_state)) {
|
|
ret = PTR_ERR(plane_state);
|
|
break;
|
|
}
|
|
|
|
ret = drm_atomic_plane_set_property(plane,
|
|
plane_state, prop, prop_value);
|
|
break;
|
|
}
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
drm_property_change_valid_put(prop, ref);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* DOC: explicit fencing properties
|
|
*
|
|
* Explicit fencing allows userspace to control the buffer synchronization
|
|
* between devices. A Fence or a group of fences are transfered to/from
|
|
* userspace using Sync File fds and there are two DRM properties for that.
|
|
* IN_FENCE_FD on each DRM Plane to send fences to the kernel and
|
|
* OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
|
|
*
|
|
* As a contrast, with implicit fencing the kernel keeps track of any
|
|
* ongoing rendering, and automatically ensures that the atomic update waits
|
|
* for any pending rendering to complete. For shared buffers represented with
|
|
* a &struct dma_buf this is tracked in &struct reservation_object.
|
|
* Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
|
|
* whereas explicit fencing is what Android wants.
|
|
*
|
|
* "IN_FENCE_FD”:
|
|
* Use this property to pass a fence that DRM should wait on before
|
|
* proceeding with the Atomic Commit request and show the framebuffer for
|
|
* the plane on the screen. The fence can be either a normal fence or a
|
|
* merged one, the sync_file framework will handle both cases and use a
|
|
* fence_array if a merged fence is received. Passing -1 here means no
|
|
* fences to wait on.
|
|
*
|
|
* If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
|
|
* it will only check if the Sync File is a valid one.
|
|
*
|
|
* On the driver side the fence is stored on the @fence parameter of
|
|
* &struct drm_plane_state. Drivers which also support implicit fencing
|
|
* should set the implicit fence using drm_atomic_set_fence_for_plane(),
|
|
* to make sure there's consistent behaviour between drivers in precedence
|
|
* of implicit vs. explicit fencing.
|
|
*
|
|
* "OUT_FENCE_PTR”:
|
|
* Use this property to pass a file descriptor pointer to DRM. Once the
|
|
* Atomic Commit request call returns OUT_FENCE_PTR will be filled with
|
|
* the file descriptor number of a Sync File. This Sync File contains the
|
|
* CRTC fence that will be signaled when all framebuffers present on the
|
|
* Atomic Commit * request for that given CRTC are scanned out on the
|
|
* screen.
|
|
*
|
|
* The Atomic Commit request fails if a invalid pointer is passed. If the
|
|
* Atomic Commit request fails for any other reason the out fence fd
|
|
* returned will be -1. On a Atomic Commit with the
|
|
* DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
|
|
*
|
|
* Note that out-fences don't have a special interface to drivers and are
|
|
* internally represented by a &struct drm_pending_vblank_event in struct
|
|
* &drm_crtc_state, which is also used by the nonblocking atomic commit
|
|
* helpers and for the DRM event handling for existing userspace.
|
|
*/
|
|
|
|
struct drm_out_fence_state {
|
|
s32 __user *out_fence_ptr;
|
|
struct sync_file *sync_file;
|
|
int fd;
|
|
};
|
|
|
|
static int setup_out_fence(struct drm_out_fence_state *fence_state,
|
|
struct dma_fence *fence)
|
|
{
|
|
fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
|
|
if (fence_state->fd < 0)
|
|
return fence_state->fd;
|
|
|
|
if (put_user(fence_state->fd, fence_state->out_fence_ptr))
|
|
return -EFAULT;
|
|
|
|
fence_state->sync_file = sync_file_create(fence);
|
|
if (!fence_state->sync_file)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int prepare_signaling(struct drm_device *dev,
|
|
struct drm_atomic_state *state,
|
|
struct drm_mode_atomic *arg,
|
|
struct drm_file *file_priv,
|
|
struct drm_out_fence_state **fence_state,
|
|
unsigned int *num_fences)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
struct drm_crtc_state *crtc_state;
|
|
struct drm_connector *conn;
|
|
struct drm_connector_state *conn_state;
|
|
int i, c = 0, ret;
|
|
|
|
if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
|
|
return 0;
|
|
|
|
for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
|
|
s32 __user *fence_ptr;
|
|
|
|
fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
|
|
|
|
if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
|
|
struct drm_pending_vblank_event *e;
|
|
|
|
e = create_vblank_event(crtc, arg->user_data);
|
|
if (!e)
|
|
return -ENOMEM;
|
|
|
|
crtc_state->event = e;
|
|
}
|
|
|
|
if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
|
|
struct drm_pending_vblank_event *e = crtc_state->event;
|
|
|
|
if (!file_priv)
|
|
continue;
|
|
|
|
ret = drm_event_reserve_init(dev, file_priv, &e->base,
|
|
&e->event.base);
|
|
if (ret) {
|
|
kfree(e);
|
|
crtc_state->event = NULL;
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (fence_ptr) {
|
|
struct dma_fence *fence;
|
|
struct drm_out_fence_state *f;
|
|
|
|
f = krealloc(*fence_state, sizeof(**fence_state) *
|
|
(*num_fences + 1), GFP_KERNEL);
|
|
if (!f)
|
|
return -ENOMEM;
|
|
|
|
memset(&f[*num_fences], 0, sizeof(*f));
|
|
|
|
f[*num_fences].out_fence_ptr = fence_ptr;
|
|
*fence_state = f;
|
|
|
|
fence = drm_crtc_create_fence(crtc);
|
|
if (!fence)
|
|
return -ENOMEM;
|
|
|
|
ret = setup_out_fence(&f[(*num_fences)++], fence);
|
|
if (ret) {
|
|
dma_fence_put(fence);
|
|
return ret;
|
|
}
|
|
|
|
crtc_state->event->base.fence = fence;
|
|
}
|
|
|
|
c++;
|
|
}
|
|
|
|
for_each_new_connector_in_state(state, conn, conn_state, i) {
|
|
struct drm_writeback_connector *wb_conn;
|
|
struct drm_writeback_job *job;
|
|
struct drm_out_fence_state *f;
|
|
struct dma_fence *fence;
|
|
s32 __user *fence_ptr;
|
|
|
|
fence_ptr = get_out_fence_for_connector(state, conn);
|
|
if (!fence_ptr)
|
|
continue;
|
|
|
|
job = drm_atomic_get_writeback_job(conn_state);
|
|
if (!job)
|
|
return -ENOMEM;
|
|
|
|
f = krealloc(*fence_state, sizeof(**fence_state) *
|
|
(*num_fences + 1), GFP_KERNEL);
|
|
if (!f)
|
|
return -ENOMEM;
|
|
|
|
memset(&f[*num_fences], 0, sizeof(*f));
|
|
|
|
f[*num_fences].out_fence_ptr = fence_ptr;
|
|
*fence_state = f;
|
|
|
|
wb_conn = drm_connector_to_writeback(conn);
|
|
fence = drm_writeback_get_out_fence(wb_conn);
|
|
if (!fence)
|
|
return -ENOMEM;
|
|
|
|
ret = setup_out_fence(&f[(*num_fences)++], fence);
|
|
if (ret) {
|
|
dma_fence_put(fence);
|
|
return ret;
|
|
}
|
|
|
|
job->out_fence = fence;
|
|
}
|
|
|
|
/*
|
|
* Having this flag means user mode pends on event which will never
|
|
* reach due to lack of at least one CRTC for signaling
|
|
*/
|
|
if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void complete_signaling(struct drm_device *dev,
|
|
struct drm_atomic_state *state,
|
|
struct drm_out_fence_state *fence_state,
|
|
unsigned int num_fences,
|
|
bool install_fds)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
struct drm_crtc_state *crtc_state;
|
|
int i;
|
|
|
|
if (install_fds) {
|
|
for (i = 0; i < num_fences; i++)
|
|
fd_install(fence_state[i].fd,
|
|
fence_state[i].sync_file->file);
|
|
|
|
kfree(fence_state);
|
|
return;
|
|
}
|
|
|
|
for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
|
|
struct drm_pending_vblank_event *event = crtc_state->event;
|
|
/*
|
|
* Free the allocated event. drm_atomic_helper_setup_commit
|
|
* can allocate an event too, so only free it if it's ours
|
|
* to prevent a double free in drm_atomic_state_clear.
|
|
*/
|
|
if (event && (event->base.fence || event->base.file_priv)) {
|
|
drm_event_cancel_free(dev, &event->base);
|
|
crtc_state->event = NULL;
|
|
}
|
|
}
|
|
|
|
if (!fence_state)
|
|
return;
|
|
|
|
for (i = 0; i < num_fences; i++) {
|
|
if (fence_state[i].sync_file)
|
|
fput(fence_state[i].sync_file->file);
|
|
if (fence_state[i].fd >= 0)
|
|
put_unused_fd(fence_state[i].fd);
|
|
|
|
/* If this fails log error to the user */
|
|
if (fence_state[i].out_fence_ptr &&
|
|
put_user(-1, fence_state[i].out_fence_ptr))
|
|
DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
|
|
}
|
|
|
|
kfree(fence_state);
|
|
}
|
|
|
|
int drm_mode_atomic_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_atomic *arg = data;
|
|
uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
|
|
uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
|
|
uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
|
|
uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
|
|
unsigned int copied_objs, copied_props;
|
|
struct drm_atomic_state *state;
|
|
struct drm_modeset_acquire_ctx ctx;
|
|
struct drm_out_fence_state *fence_state;
|
|
int ret = 0;
|
|
unsigned int i, j, num_fences;
|
|
|
|
/* disallow for drivers not supporting atomic: */
|
|
if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
|
|
return -EOPNOTSUPP;
|
|
|
|
/* disallow for userspace that has not enabled atomic cap (even
|
|
* though this may be a bit overkill, since legacy userspace
|
|
* wouldn't know how to call this ioctl)
|
|
*/
|
|
if (!file_priv->atomic)
|
|
return -EINVAL;
|
|
|
|
if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
|
|
return -EINVAL;
|
|
|
|
if (arg->reserved)
|
|
return -EINVAL;
|
|
|
|
if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
|
|
!dev->mode_config.async_page_flip)
|
|
return -EINVAL;
|
|
|
|
/* can't test and expect an event at the same time. */
|
|
if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
|
|
(arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
|
|
return -EINVAL;
|
|
|
|
state = drm_atomic_state_alloc(dev);
|
|
if (!state)
|
|
return -ENOMEM;
|
|
|
|
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
|
|
state->acquire_ctx = &ctx;
|
|
state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
|
|
|
|
retry:
|
|
copied_objs = 0;
|
|
copied_props = 0;
|
|
fence_state = NULL;
|
|
num_fences = 0;
|
|
|
|
for (i = 0; i < arg->count_objs; i++) {
|
|
uint32_t obj_id, count_props;
|
|
struct drm_mode_object *obj;
|
|
|
|
if (get_user(obj_id, objs_ptr + copied_objs)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
|
|
if (!obj) {
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
if (!obj->properties) {
|
|
drm_mode_object_put(obj);
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
if (get_user(count_props, count_props_ptr + copied_objs)) {
|
|
drm_mode_object_put(obj);
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
copied_objs++;
|
|
|
|
for (j = 0; j < count_props; j++) {
|
|
uint32_t prop_id;
|
|
uint64_t prop_value;
|
|
struct drm_property *prop;
|
|
|
|
if (get_user(prop_id, props_ptr + copied_props)) {
|
|
drm_mode_object_put(obj);
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
prop = drm_mode_obj_find_prop_id(obj, prop_id);
|
|
if (!prop) {
|
|
drm_mode_object_put(obj);
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
if (copy_from_user(&prop_value,
|
|
prop_values_ptr + copied_props,
|
|
sizeof(prop_value))) {
|
|
drm_mode_object_put(obj);
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
ret = drm_atomic_set_property(state, obj, prop,
|
|
prop_value);
|
|
if (ret) {
|
|
drm_mode_object_put(obj);
|
|
goto out;
|
|
}
|
|
|
|
copied_props++;
|
|
}
|
|
|
|
drm_mode_object_put(obj);
|
|
}
|
|
|
|
ret = prepare_signaling(dev, state, arg, file_priv, &fence_state,
|
|
&num_fences);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
|
|
ret = drm_atomic_check_only(state);
|
|
} else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
|
|
ret = drm_atomic_nonblocking_commit(state);
|
|
} else {
|
|
if (unlikely(drm_debug & DRM_UT_STATE))
|
|
drm_atomic_print_state(state);
|
|
|
|
ret = drm_atomic_commit(state);
|
|
}
|
|
|
|
out:
|
|
complete_signaling(dev, state, fence_state, num_fences, !ret);
|
|
|
|
if (ret == -EDEADLK) {
|
|
drm_atomic_state_clear(state);
|
|
ret = drm_modeset_backoff(&ctx);
|
|
if (!ret)
|
|
goto retry;
|
|
}
|
|
|
|
drm_atomic_state_put(state);
|
|
|
|
drm_modeset_drop_locks(&ctx);
|
|
drm_modeset_acquire_fini(&ctx);
|
|
|
|
return ret;
|
|
}
|