As per bpsec, CHICKEN_TRANS_EDP bit 12 ,15 must be programmed. Enable bit 12 for programmable header packet. Enable bit 15 for Y cordinate support.
v2: (Rodrigo) - move CHICKEN_TRANS_EDP bit set logic right after setup_vsc
Cc: Rodrigo Vivi rodrigo.vivi@intel.com Cc: Jim Bride jim.bride@linux.intel.com Signed-off-by: vathsala nagaraju vathsala.nagaraju@intel.com Signed-off-by: Patil Deepti deepti.patil@intel.com --- drivers/gpu/drm/i915/i915_reg.h | 7 +++++++ drivers/gpu/drm/i915/intel_psr.c | 9 ++++++++- 2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 7830e6e..5ca506a 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6449,6 +6449,13 @@ enum { #define BDW_DPRS_MASK_VBLANK_SRD (1 << 0) #define CHICKEN_PIPESL_1(pipe) _MMIO_PIPE(pipe, _CHICKEN_PIPESL_1_A, _CHICKEN_PIPESL_1_B)
+#define CHICKEN_TRANS_A 0x420c0 +#define CHICKEN_TRANS_B 0x420c4 +#define CHICKEN_TRANS(trans) _MMIO_TRANS(trans, CHICKEN_TRANS_A, CHICKEN_TRANS_B) +#define TRANS_EDP 3 +#define CHICKEN_TRANS_BIT12 (1<<12) +#define CHICKEN_TRANS_BIT15 (1<<15) + #define DISP_ARB_CTL _MMIO(0x45000) #define DISP_FBC_MEMORY_WAKE (1<<31) #define DISP_TILE_SURFACE_SWIZZLING (1<<13) diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c index 7020f42..bcfe0db 100644 --- a/drivers/gpu/drm/i915/intel_psr.c +++ b/drivers/gpu/drm/i915/intel_psr.c @@ -348,7 +348,6 @@ static void intel_enable_source_psr2(struct intel_dp *intel_dp) val |= EDP_PSR2_TP2_TIME_100; else val |= EDP_PSR2_TP2_TIME_50; - I915_WRITE(EDP_PSR2_CTL, val); }
@@ -475,6 +474,7 @@ void intel_psr_enable(struct intel_dp *intel_dp) struct drm_device *dev = intel_dig_port->base.base.dev; struct drm_i915_private *dev_priv = to_i915(dev); struct intel_crtc *crtc = to_intel_crtc(intel_dig_port->base.base.crtc); + uint32_t chicken_trans = 0;
if (!HAS_PSR(dev_priv)) { DRM_DEBUG_KMS("PSR not supported on this platform\n"); @@ -505,6 +505,13 @@ void intel_psr_enable(struct intel_dp *intel_dp) dev_priv->psr.psr2_support = false; else skl_psr_setup_su_vsc(intel_dp); + + /* Set CHICKEN_TRANS_BIT15 if Y coordinate is supported */ + if (dev_priv->psr.y_cord_support) + chicken_trans = CHICKEN_TRANS_BIT15; + /* Set CHICKEN_TRANS_BIT12 for programable header */ + chicken_trans = chicken_trans | CHICKEN_TRANS_BIT12; + I915_WRITE(CHICKEN_TRANS(TRANS_EDP), chicken_trans); } else { /* set up vsc header for psr1 */ hsw_psr_setup_vsc(intel_dp);