219 lines
7.3 KiB
C
219 lines
7.3 KiB
C
/*
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* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
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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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/*
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* This file contains snapshots of DRM helper functions from the
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* Linux kernel which are used by nvidia-drm.ko if the target kernel
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* predates the helper function. Having these functions consistently
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* present simplifies nvidia-drm.ko source.
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*/
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#include "nvidia-drm-helper.h"
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#include "nvidia-drm-priv.h"
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#include "nvidia-drm-crtc.h"
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#include "nvmisc.h"
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#if defined(NV_DRM_ATOMIC_MODESET_AVAILABLE)
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#if defined(NV_DRM_DRMP_H_PRESENT)
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#include <drm/drmP.h>
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#endif
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#if defined(NV_DRM_DRM_ATOMIC_UAPI_H_PRESENT)
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#include <drm/drm_atomic_uapi.h>
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#endif
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/*
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* The inclusion of drm_framebuffer.h was removed from drm_crtc.h by commit
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* 720cf96d8fecde29b72e1101f8a567a0ce99594f ("drm: Drop drm_framebuffer.h from
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* drm_crtc.h") in linux-next, expected in v5.19-rc7.
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*
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* We only need drm_framebuffer.h for drm_framebuffer_put(), and it is always
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* present (v4.9+) when drm_framebuffer_{put,get}() is present (v4.12+), so it
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* is safe to unconditionally include it when drm_framebuffer_get() is present.
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*/
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#if defined(NV_DRM_FRAMEBUFFER_GET_PRESENT)
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#include <drm/drm_framebuffer.h>
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#endif
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static void __nv_drm_framebuffer_put(struct drm_framebuffer *fb)
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{
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#if defined(NV_DRM_FRAMEBUFFER_GET_PRESENT)
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drm_framebuffer_put(fb);
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#else
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drm_framebuffer_unreference(fb);
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#endif
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}
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/*
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* drm_atomic_helper_disable_all() has been added by commit
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* 1494276000db789c6d2acd85747be4707051c801, which is Signed-off-by:
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* Thierry Reding <treding@nvidia.com>
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* Daniel Vetter <daniel.vetter@ffwll.ch>
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*
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* drm_atomic_helper_disable_all() is copied from
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* linux/drivers/gpu/drm/drm_atomic_helper.c and modified to use
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* nv_drm_for_each_crtc instead of drm_for_each_crtc to loop over all crtcs,
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* use nv_drm_for_each_*_in_state instead of for_each_connector_in_state to loop
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* over all modeset object states, and use drm_atomic_state_free() if
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* drm_atomic_state_put() is not available.
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*
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* drm_atomic_helper_disable_all() is copied from
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* linux/drivers/gpu/drm/drm_atomic_helper.c @
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* 49d70aeaeca8f62b72b7712ecd1e29619a445866, which has the following
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* copyright and license information:
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*
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* Copyright (C) 2014 Red Hat
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* Copyright (C) 2014 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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int nv_drm_atomic_helper_disable_all(struct drm_device *dev,
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struct drm_modeset_acquire_ctx *ctx)
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{
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struct drm_atomic_state *state;
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struct drm_connector_state *conn_state;
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struct drm_connector *conn;
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struct drm_plane_state *plane_state;
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struct drm_plane *plane;
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struct drm_crtc_state *crtc_state;
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struct drm_crtc *crtc;
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unsigned plane_mask = 0;
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int ret, i;
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state = drm_atomic_state_alloc(dev);
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if (!state)
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return -ENOMEM;
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state->acquire_ctx = ctx;
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nv_drm_for_each_crtc(crtc, dev) {
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crtc_state = drm_atomic_get_crtc_state(state, crtc);
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if (IS_ERR(crtc_state)) {
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ret = PTR_ERR(crtc_state);
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goto free;
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}
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crtc_state->active = false;
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ret = drm_atomic_set_mode_prop_for_crtc(crtc_state, NULL);
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if (ret < 0)
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goto free;
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ret = drm_atomic_add_affected_planes(state, crtc);
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if (ret < 0)
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goto free;
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ret = drm_atomic_add_affected_connectors(state, crtc);
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if (ret < 0)
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goto free;
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}
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#if defined(NV_DRM_ROTATION_AVAILABLE)
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nv_drm_for_each_plane(plane, dev) {
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plane_state = drm_atomic_get_plane_state(state, plane);
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if (IS_ERR(plane_state)) {
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ret = PTR_ERR(plane_state);
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goto free;
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}
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plane_state->rotation = DRM_MODE_ROTATE_0;
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}
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#endif
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nv_drm_for_each_connector_in_state(state, conn, conn_state, i) {
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ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
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if (ret < 0)
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goto free;
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}
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nv_drm_for_each_plane_in_state(state, plane, plane_state, i) {
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ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
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if (ret < 0)
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goto free;
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drm_atomic_set_fb_for_plane(plane_state, NULL);
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plane_mask |= NVBIT(drm_plane_index(plane));
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plane->old_fb = plane->fb;
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}
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ret = drm_atomic_commit(state);
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free:
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if (plane_mask) {
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drm_for_each_plane_mask(plane, dev, plane_mask) {
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if (ret == 0) {
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plane->fb = NULL;
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plane->crtc = NULL;
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WARN_ON(plane->state->fb);
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WARN_ON(plane->state->crtc);
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if (plane->old_fb)
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__nv_drm_framebuffer_put(plane->old_fb);
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}
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plane->old_fb = NULL;
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}
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}
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#if defined(NV_DRM_ATOMIC_STATE_REF_COUNTING_PRESENT)
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drm_atomic_state_put(state);
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#else
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if (ret != 0) {
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drm_atomic_state_free(state);
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} else {
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/*
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* In case of success, drm_atomic_commit() takes care to cleanup and
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* free @state.
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*
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* Comment placed above drm_atomic_commit() says: The caller must not
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* free or in any other way access @state. If the function fails then
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* the caller must clean up @state itself.
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*/
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}
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#endif
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return ret;
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}
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#endif /* NV_DRM_ATOMIC_MODESET_AVAILABLE */
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