drm/radeon/kms: fix num crtcs for Cedar and Caicos

Only support 4 rather than 6.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 19 insertions, 12 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 9bd162fc9b0c..b2449629537d 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -938,6 +938,13 @@ static struct radeon_asic cayman_asic = {
 int radeon_asic_init(struct radeon_device *rdev)
 {
         radeon_register_accessor_init(rdev);
+
+        /* set the number of crtcs */
+        if (rdev->flags & RADEON_SINGLE_CRTC)
+                rdev->num_crtc = 1;
+        else
+                rdev->num_crtc = 2;
+
         switch (rdev->family) {
         case CHIP_R100:
         case CHIP_RV100:
@@ -1017,6 +1024,11 @@ int radeon_asic_init(struct radeon_device *rdev)
         case CHIP_JUNIPER:
         case CHIP_CYPRESS:
         case CHIP_HEMLOCK:
+                /* set num crtcs */
+                if (rdev->family == CHIP_CEDAR)
+                        rdev->num_crtc = 4;
+                else
+                        rdev->num_crtc = 6;
                 rdev->asic = &evergreen_asic;
                 break;
         case CHIP_PALM:
@@ -1027,10 +1039,17 @@ int radeon_asic_init(struct radeon_device *rdev)
         case CHIP_BARTS:
         case CHIP_TURKS:
         case CHIP_CAICOS:
+                /* set num crtcs */
+                if (rdev->family == CHIP_CAICOS)
+                        rdev->num_crtc = 4;
+                else
+                        rdev->num_crtc = 6;
                 rdev->asic = &btc_asic;
                 break;
         case CHIP_CAYMAN:
                 rdev->asic = &cayman_asic;
+                /* set num crtcs */
+                rdev->num_crtc = 6;
                 break;
         default:
                 /* FIXME: not supported yet */
@@ -1042,18 +1061,6 @@ int radeon_asic_init(struct radeon_device *rdev)
                 rdev->asic->set_memory_clock = NULL;
         }
 
-        /* set the number of crtcs */
-        if (rdev->flags & RADEON_SINGLE_CRTC)
-                rdev->num_crtc = 1;
-        else {
-                if (ASIC_IS_DCE41(rdev))
-                        rdev->num_crtc = 2;
-                else if (ASIC_IS_DCE4(rdev))
-                        rdev->num_crtc = 6;
-                else
-                        rdev->num_crtc = 2;
-        }
-
         return 0;
 }