/*
* 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 <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <nvif/class.h>
#include "nouveau_fbcon.h"
#include "dispnv04/hw.h"
#include "nouveau_crtc.h"
#include "nouveau_dma.h"
#include "nouveau_gem.h"
#include "nouveau_connector.h"
#include "nv50_display.h"
#include "nouveau_fence.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_handle_vblank(nv_crtc->base.dev, nv_crtc->index);
return NVIF_NOTIFY_KEEP;
}
int
nouveau_display_vblank_enable(struct drm_device *dev, int head)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
if (nv_crtc->index == head) {
nvif_notify_get(&nv_crtc->vblank);
return 0;
}
}
return -EINVAL;
}
void
nouveau_display_vblank_disable(struct drm_device *dev, int head)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
if (nv_crtc->index == head) {
nvif_notify_put(&nv_crtc->vblank);
return;
}
}
}
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;
line -= blanke + 1;
}
return line;
}
int
nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
ktime_t *stime, ktime_t *etime)
{
struct {
struct nv04_disp_mthd_v0 base;
struct nv04_disp_scanoutpos_v0 scan;
} args = {
.base.method = NV04_DISP_SCANOUTPOS,
.base.head = nouveau_crtc(crtc)->index,
};
struct nouveau_display *disp = nouveau_display(crtc->dev);
int ret, retry = 1;
do {
ret = nvif_mthd(&disp->disp, 0, &args, sizeof(args));
if (ret != 0)
return 0;
if (args.scan.vline) {
ret |= DRM_SCANOUTPOS_ACCURATE;
ret |= DRM_SCANOUTPOS_VALID;
break;
}
if (retry) ndelay(crtc->linedur_ns);
} while (retry--);
*hpos = args.scan.hline;
*vpos = calc(args.scan.vblanks, args.scan.vblanke,
args.scan.vtotal, args.scan.vline);
if (stime) *stime = ns_to_ktime(args.scan.time[0]);
if (etime) *etime = ns_to_ktime(args.scan.time[1]);
if (*vpos < 0)
ret |= DRM_SCANOUTPOS_IN_VBLANK;
return ret;
}
int
nouveau_display_scanoutpos(struct drm_device *dev, int head, unsigned int flags,
int *vpos, int *hpos, ktime_t *stime, ktime_t *etime)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (nouveau_crtc(crtc)->index == head) {
return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
stime, etime);
}
}
return 0;
}
int
nouveau_display_vblstamp(struct drm_device *dev, int head, int *max_error,
struct timeval *time, unsigned flags)
{
struct drm_crtc *crtc;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (nouveau_crtc(crtc)->index == head) {
return drm_calc_vbltimestamp_from_scanoutpos(dev,
head, max_error,