drm/nv50: prevent switching off SOR when in use for DVI-over-DP
Another hack because of us exposing each encoder block's function as
an encoder rather than exposing a single encoder that deals with them
all.
A proper fix will come, it's just rather invasive so this hack will
do until then.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv50_sor.c b/drivers/gpu/drm/nouveau/nv50_sor.c
index e395c16..ecf1936 100644
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -90,11 +90,24 @@
{
struct drm_device *dev = encoder->dev;
struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
+ struct drm_encoder *enc;
uint32_t val;
int or = nv_encoder->or;
NV_DEBUG_KMS(dev, "or %d mode %d\n", or, mode);
+ nv_encoder->last_dpms = mode;
+ list_for_each_entry(enc, &dev->mode_config.encoder_list, head) {
+ struct nouveau_encoder *nvenc = nouveau_encoder(enc);
+
+ if (nvenc == nv_encoder ||
+ nvenc->dcb->or != nv_encoder->dcb->or)
+ continue;
+
+ if (nvenc->last_dpms == DRM_MODE_DPMS_ON)
+ return;
+ }
+
/* wait for it to be done */
if (!nv_wait(NV50_PDISPLAY_SOR_DPMS_CTRL(or),
NV50_PDISPLAY_SOR_DPMS_CTRL_PENDING, 0)) {