drm/nvd0/disp: handle sync polarity, kill off some unknown

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/drivers/gpu/drm/nouveau/nvd0_display.c b/drivers/gpu/drm/nouveau/nvd0_display.c
index d85b25939653..6720d63cfccc 100644
--- a/drivers/gpu/drm/nouveau/nvd0_display.c
+++ b/drivers/gpu/drm/nouveau/nvd0_display.c
@@ -352,11 +352,15 @@ nvd0_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode,
         u32 vss2be = vsyncw + vbackp;
         u32 hss2de = htotal - hfrntp;
         u32 vss2de = vtotal - vfrntp;
-        u32 hstart = 0;
-        u32 vstart = 0;
-        u32 *push;
+        u32 syncs, *push;
         int ret;
 
+        syncs = 0x00000001;
+        if (mode->flags & DRM_MODE_FLAG_NHSYNC)
+                syncs |= 0x00000008;
+        if (mode->flags & DRM_MODE_FLAG_NVSYNC)
+                syncs |= 0x00000010;
+
         ret = nvd0_crtc_swap_fbs(crtc, old_fb);
         if (ret)
                 return ret;
@@ -364,7 +368,7 @@ nvd0_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode,
         push = evo_wait(crtc->dev, 0, 64);
         if (push) {
                 evo_mthd(push, 0x0410 + (nv_crtc->index * 0x300), 5);
-                evo_data(push, (vstart << 16) | hstart);
+                evo_data(push, 0x00000000);
                 evo_data(push, (vtotal << 16) | htotal);
                 evo_data(push, (vsyncw << 16) | hsyncw);
                 evo_data(push, (vss2be << 16) | hss2be);
@@ -375,8 +379,8 @@ nvd0_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *umode,
                 evo_data(push, mode->clock * 1000);
                 evo_data(push, 0x00200000); /* ??? */
                 evo_data(push, mode->clock * 1000);
-                evo_mthd(push, 0x0408 + (nv_crtc->index * 0x300), 1);
-                evo_data(push, 0x31ec6000); /* ??? */
+                evo_mthd(push, 0x0404 + (nv_crtc->index * 0x300), 1);
+                evo_data(push, syncs);
                 evo_kick(push, crtc->dev, 0);
         }