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/** @file $Id$
*
* VirtualBox Additions Linux kernel video driver, KMS support
*/
/*
* Copyright (C) 2012 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
* --------------------------------------------------------------------
*
* This code is based on
* glint_crtc.c
* with the following copyright and permission notice:
*
* Copyright 2010 Matt Turner.
*
* 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: Matt Turner
*/
#include <linux/version.h>
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 33)
#include <VBox/VBoxVideoGuest.h>
#include "vboxvideo_drv.h"
#include "drm/drm_crtc_helper.h"
static void vboxvideo_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct vboxvideo_crtc *vboxvideo_crtc = to_vboxvideo_crtc(crtc);
struct drm_device *dev = crtc->dev;
struct vboxvideo_device *gdev = dev->dev_private;
if (mode == vboxvideo_crtc->last_dpms) /* Don't do unnecesary mode changes. */
return;
vboxvideo_crtc->last_dpms = mode;
switch (mode) {
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
case DRM_MODE_DPMS_OFF:
vboxvideo_crtc->enabled = false;
break;
case DRM_MODE_DPMS_ON:
vboxvideo_crtc->enabled = true;
break;
}
}
static bool vboxvideo_crtc_mode_fixup(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
return true;
}
static int vboxvideo_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y, struct drm_framebuffer *old_fb)
{
/*
struct vboxvideo_crtc *vboxvideo_crtc = to_vboxvideo_crtc(crtc);
vboxvideo_crtc_set_base(crtc, x, y, old_fb);
vboxvideo_set_crtc_timing(crtc, adjusted_mode);
vboxvideo_set_pll(crtc, adjusted_mode);
*/
return 0;
}
static void vboxvideo_crtc_prepare(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_crtc *crtci;
/*
list_for_each_entry(crtci, &dev->mode_config.crtc_list, head)
vboxvideo_crtc_dpms(crtci, DRM_MODE_DPMS_OFF);
*/
}
static void vboxvideo_crtc_commit(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_crtc *crtci;
/*
list_for_each_entry(crtci, &dev->mode_config.crtc_list, head) {
if (crtci->enabled)
vboxvideo_crtc_dpms(crtci, DRM_MODE_DPMS_ON);
}
*/
}
static void vboxvideo_crtc_load_lut(struct drm_crtc *crtc)
{
/* Dummy */
}
static void vboxvideo_crtc_gamma_set(struct drm_crtc *crtc, u16 *red,
u16 *green, u16 *blue, uint32_t size)
{
/* Dummy */
}
static void vboxvideo_crtc_destroy(struct drm_crtc *crtc)
{
struct vboxvideo_crtc *vboxvideo_crtc = to_vboxvideo_crtc(crtc);
drm_crtc_cleanup(crtc);
kfree(vboxvideo_crtc);
}
static const struct drm_crtc_funcs vboxvideo_crtc_funcs = {
/*
.cursor_set = vboxvideo_crtc_cursor_set,
.cursor_move = vboxvideo_crtc_cursor_move,
*/
.cursor_set = NULL,
.cursor_move = NULL,
.gamma_set = vboxvideo_crtc_gamma_set,
.set_config = drm_crtc_helper_set_config,
.destroy = vboxvideo_crtc_destroy,
};
static const struct drm_crtc_helper_funcs vboxvideo_helper_funcs = {
.dpms = vboxvideo_crtc_dpms,
.mode_fixup = vboxvideo_crtc_mode_fixup,
.mode_set = vboxvideo_crtc_mode_set,
/*
.mode_set_base = vboxvideo_crtc_set_base,
*/
.prepare = vboxvideo_crtc_prepare,
.commit = vboxvideo_crtc_commit,
.load_lut = vboxvideo_crtc_load_lut,
};
void vboxvideo_crtc_init(struct drm_device *dev, int index)
{
struct vboxvideo_device *gdev = dev->dev_private;
struct vboxvideo_crtc *vboxvideo_crtc;
int i;
vboxvideo_crtc = kzalloc( sizeof(struct vboxvideo_crtc)
+ (VBOXVIDEOFB_CONN_LIMIT
* sizeof(struct drm_connector *)),
GFP_KERNEL);
if (vboxvideo_crtc == NULL)
return;
drm_crtc_init(dev, &vboxvideo_crtc->base, &vboxvideo_crtc_funcs);
vboxvideo_crtc->crtc_id = index;
vboxvideo_crtc->last_dpms = VBOXVIDEO_DPMS_CLEARED;
gdev->mode_info.crtcs[index] = vboxvideo_crtc;
drm_crtc_helper_add(&vboxvideo_crtc->base, &vboxvideo_helper_funcs);
}
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27) */
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