drm: Stop using linedur_ns and pixeldur_ns for vblank timestamps

[mirror_ubuntu-jammy-kernel.git] / drivers / gpu / drm / drm_irq.c

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 6b2fefde25a812781ed4132af653440481f982bf..9fab3334eb6b97e94c6665e81c37d8f98f923494 100644 (file)
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -694,12 +694,11 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
                                          unsigned flags,
                                          const struct drm_display_mode *mode)
 {
-       struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
        struct timeval tv_etime;
        ktime_t stime, etime;
        int vbl_status;
        int vpos, hpos, i;
-       int framedur_ns, linedur_ns, pixeldur_ns, delta_ns, duration_ns;
+       int delta_ns, duration_ns;
        bool invbl;
 
        if (pipe >= dev->num_crtcs) {
@@ -713,15 +712,10 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
                return -EIO;
        }
 
-       /* Durations of frames, lines, pixels in nanoseconds. */
-       framedur_ns = vblank->framedur_ns;
-       linedur_ns  = vblank->linedur_ns;
-       pixeldur_ns = vblank->pixeldur_ns;
-
        /* If mode timing undefined, just return as no-op:
         * Happens during initial modesetting of a crtc.
         */
-       if (framedur_ns == 0) {
+       if (mode->crtc_clock == 0) {
                DRM_DEBUG("crtc %u: Noop due to uninitialized mode.\n", pipe);
                return -EAGAIN;
        }
@@ -738,8 +732,10 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
                 * Get vertical and horizontal scanout position vpos, hpos,
                 * and bounding timestamps stime, etime, pre/post query.
                 */
-               vbl_status = dev->driver->get_scanout_position(dev, pipe, flags, &vpos,
-                                                              &hpos, &stime, &etime);
+               vbl_status = dev->driver->get_scanout_position(dev, pipe, flags,
+                                                              &vpos, &hpos,
+                                                              &stime, &etime,
+                                                              mode);
 
                /* Return as no-op if scanout query unsupported or failed. */
                if (!(vbl_status & DRM_SCANOUTPOS_VALID)) {
@@ -776,7 +772,8 @@ int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
         * since start of scanout at first display scanline. delta_ns
         * can be negative if start of scanout hasn't happened yet.
         */
-       delta_ns = vpos * linedur_ns + hpos * pixeldur_ns;
+       delta_ns = div_s64(1000000LL * (vpos * mode->crtc_htotal + hpos),
+                          mode->crtc_clock);
 
        if (!drm_timestamp_monotonic)
                etime = ktime_mono_to_real(etime);