drm/nv50: fix SOR count for early chipsets
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c
index b65d2dd..c11a2fa 100644
--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -33,6 +33,19 @@
#include "nouveau_ramht.h"
#include "drm_crtc_helper.h"
+static inline int
+nv50_sor_nr(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ if (dev_priv->chipset < 0x90 ||
+ dev_priv->chipset == 0x92 ||
+ dev_priv->chipset == 0xa0)
+ return 2;
+
+ return 4;
+}
+
static void
nv50_evo_channel_del(struct nouveau_channel **pchan)
{
@@ -233,11 +246,11 @@
nv_wr32(dev, 0x006101d0 + (i * 0x04), val);
}
/* SOR */
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < nv50_sor_nr(dev); i++) {
val = nv_rd32(dev, 0x0061c000 + (i * 0x800));
nv_wr32(dev, 0x006101e0 + (i * 0x04), val);
}
- /* Something not yet in use, tv-out maybe. */
+ /* EXT */
for (i = 0; i < 3; i++) {
val = nv_rd32(dev, 0x0061e000 + (i * 0x800));
nv_wr32(dev, 0x006101f0 + (i * 0x04), val);
@@ -716,7 +729,7 @@
or = i;
}
- for (i = 0; type == OUTPUT_ANY && i < 4; i++) {
+ for (i = 0; type == OUTPUT_ANY && i < nv50_sor_nr(dev); i++) {
if (dev_priv->chipset < 0x90 ||
dev_priv->chipset == 0x92 ||
dev_priv->chipset == 0xa0)
@@ -847,7 +860,7 @@
or = i;
}
- for (i = 0; type == OUTPUT_ANY && i < 4; i++) {
+ for (i = 0; type == OUTPUT_ANY && i < nv50_sor_nr(dev); i++) {
if (dev_priv->chipset < 0x90 ||
dev_priv->chipset == 0x92 ||
dev_priv->chipset == 0xa0)