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amdgpu_display.c
amdgpu_display.c 27.32 KiB
/*
* Copyright 2007-8 Advanced Micro Devices, Inc.
* Copyright 2008 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Dave Airlie
* Alex Deucher
*/
#include <drm/drmP.h>
#include <drm/amdgpu_drm.h>
#include "amdgpu.h"
#include "amdgpu_i2c.h"
#include "atom.h"
#include "amdgpu_connectors.h"
#include "amdgpu_display.h"
#include <asm/div64.h>
#include <linux/pm_runtime.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_fb_helper.h>
static void amdgpu_display_flip_callback(struct dma_fence *f,
struct dma_fence_cb *cb)
{
struct amdgpu_flip_work *work =
container_of(cb, struct amdgpu_flip_work, cb);
dma_fence_put(f);
schedule_work(&work->flip_work.work);
}
static bool amdgpu_display_flip_handle_fence(struct amdgpu_flip_work *work,
struct dma_fence **f)
{
struct dma_fence *fence= *f;
if (fence == NULL)
return false;
*f = NULL;
if (!dma_fence_add_callback(fence, &work->cb,
amdgpu_display_flip_callback))
return true;
dma_fence_put(fence);
return false;
}
static void amdgpu_display_flip_work_func(struct work_struct *__work)
{