linux-imx

/*

 * Copyright (C) 2008 Maarten Maathuis.

 * All Rights Reserved.

 *

 * 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 (including the

 * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.

 *

 */

​

#include <acpi/video.h>

#include <drm/drmP.h>

#include <drm/drm_atomic.h>

#include <drm/drm_atomic_helper.h>

#include <drm/drm_crtc_helper.h>

#include <drm/drm_fb_helper.h>

#include <drm/drm_probe_helper.h>

​

#include "nouveau_fbcon.h"

#include "nouveau_crtc.h"

#include "nouveau_gem.h"

#include "nouveau_connector.h"

#include "nv50_display.h"

​

#include <nvif/class.h>

#include <nvif/cl0046.h>

#include <nvif/event.h>

​

static int

nouveau_display_vblank_handler(struct nvif_notify *notify)

{

    struct nouveau_crtc *nv_crtc =

        container_of(notify, typeof(*nv_crtc), vblank);

    drm_crtc_handle_vblank(&nv_crtc->base);

    return NVIF_NOTIFY_KEEP;

}

​

int

nouveau_display_vblank_enable(struct drm_device *dev, unsigned int pipe)

{

    struct drm_crtc *crtc;

    struct nouveau_crtc *nv_crtc;

​

    crtc = drm_crtc_from_index(dev, pipe);

    if (!crtc)

        return -EINVAL;

​

    nv_crtc = nouveau_crtc(crtc);

    nvif_notify_get(&nv_crtc->vblank);

​

    return 0;

}

​

void

nouveau_display_vblank_disable(struct drm_device *dev, unsigned int pipe)

{

    struct drm_crtc *crtc;

    struct nouveau_crtc *nv_crtc;

​

    crtc = drm_crtc_from_index(dev, pipe);

    if (!crtc)

        return;

​

    nv_crtc = nouveau_crtc(crtc);

    nvif_notify_put(&nv_crtc->vblank);

}

​

static inline int

calc(int blanks, int blanke, int total, int line)

{

    if (blanke >= blanks) {

        if (line >= blanks)

            line -= total;

    } else {

        if (line >= blanks)

            line -= total;