These bits moved around on SNB and above.
Signed-off-by: Jesse Barnes <[email protected]>
---
drivers/gpu/drm/i915/i915_reg.h | 7 +++++++
drivers/gpu/drm/i915/intel_display.c | 34 ++++++++++++++++++++++++++++++++++
2 files changed, 41 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 7377ae4..ae28549 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3081,6 +3081,13 @@
#define TRANS_CHICKEN2(pipe) _PIPE(pipe, _TRANSA_CHICKEN2, _TRANSB_CHICKEN2)
#define TRANS_AUTOTRAIN_GEN_STALL_DIS (1<<31)
+#define SOUTH_CHICKEN1 0xc2000
+#define FDIA_PHASE_SYNC_OVR (1<<19)
+#define FDIA_PHASE_SYNC_EN (1<<18)
+#define FDIB_PHASE_SYNC_OVR (1<<17)
+#define FDIB_PHASE_SYNC_EN (1<<16)
+#define FDIC_PHASE_SYNC_OVR (1<<15)
+#define FDIC_PHASE_SYNC_EN (1<<14)
#define SOUTH_CHICKEN2 0xc2004
#define DPLS_EDP_PPS_FIX_DIS (1<<0)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 73bf235..2a367de 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2295,6 +2295,23 @@ static void ironlake_fdi_link_train(struct drm_crtc
*crtc)
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
FDI_RX_PHASE_SYNC_POINTER_EN);
+ } else if (HAS_PCH_CPT(dev)) {
+ u32 flags;
+ switch (pipe) {
+ case 0:
+ flags = FDIA_PHASE_SYNC_OVR | FDIA_PHASE_SYNC_EN;
+ break;
+ case 2:
+ flags = FDIA_PHASE_SYNC_OVR | FDIA_PHASE_SYNC_EN;
+ break;
+ case 3:
+ flags = FDIA_PHASE_SYNC_OVR | FDIA_PHASE_SYNC_EN;
+ break;
+ default:
+ break;
+ }
+ I915_WRITE(SOUTH_CHICKEN1, flags); /* once to unlock... */
+ I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to enable */
}
reg = FDI_RX_IIR(pipe);
@@ -2652,6 +2669,23 @@ static void ironlake_fdi_disable(struct drm_crtc *crtc)
I915_WRITE(FDI_RX_CHICKEN(pipe),
I915_READ(FDI_RX_CHICKEN(pipe) &
~FDI_RX_PHASE_SYNC_POINTER_EN));
+ } else if (HAS_PCH_CPT(dev)) {
+ u32 flags;
+ switch (pipe) {
+ case 0:
+ flags = FDIA_PHASE_SYNC_OVR;
+ break;
+ case 2:
+ flags = FDIA_PHASE_SYNC_OVR;
+ break;
+ case 3:
+ flags = FDIA_PHASE_SYNC_OVR;
+ break;
+ default:
+ break;
+ }
+ I915_WRITE(SOUTH_CHICKEN1, flags); /* once to unlock... */
+ I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to enable */
}
/* still set train pattern 1 */
--
1.7.4.1
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