drm/nv50/dp: fix hack to work for macbooks booted via EFI

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

drm/nv50/dp: fix hack to work for macbooks booted via EFI
Signed-off-by: N Ben Skeggs <bskeggs@redhat.com>
88c8431c · Ben Skeggs · 60f7ab06 · 88c8431c
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drivers/gpu/drm/nouveau/nv50_sor.c drivers/gpu/drm/nouveau/nv50_sor.c +2 -0

未找到文件。
--- a/drivers/gpu/drm/nouveau/nv50_sor.c
+++ b/drivers/gpu/drm/nouveau/nv50_sor.c
@@ -318,6 +318,8 @@ nv50_sor_create(struct drm_connector *connector, struct dcb_entry *entry)
 		uint32_t tmp;
 		tmp = nv_rd32(dev, 0x61c700 + (or * 0x800));
+		if (!tmp)
+			tmp = nv_rd32(dev, 0x610798 + (or * 8));
 		switch ((tmp & 0x00000f00) >> 8) {
 		case 8: