drm/i915/psr: Reintroduce HSW PSR1 registers

Add back hsw'w special SRD/PSR1 registers.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230609141404.12729-5-ville.syrjala@linux.intel.comReviewed-by: Jouni Högander <jouni.hogander@intel.com>

drivers/gpu/drm/i915/display/intel_psr.c

@@ -237,25 +237,37 @@ static u32 psr_irq_mask_get(struct intel_dp *intel_dp)
 static i915_reg_t psr_ctl_reg(struct drm_i915_private *dev_priv,
 			      enum transcoder cpu_transcoder)
 {
-	return EDP_PSR_CTL(cpu_transcoder);
+	if (DISPLAY_VER(dev_priv) >= 8)
+		return EDP_PSR_CTL(cpu_transcoder);
+	else
+		return HSW_SRD_CTL;
 }
 
 static i915_reg_t psr_debug_reg(struct drm_i915_private *dev_priv,
 				enum transcoder cpu_transcoder)
 {
-	return EDP_PSR_DEBUG(cpu_transcoder);
+	if (DISPLAY_VER(dev_priv) >= 8)
+		return EDP_PSR_DEBUG(cpu_transcoder);
+	else
+		return HSW_SRD_DEBUG;
 }
 
 static i915_reg_t psr_perf_cnt_reg(struct drm_i915_private *dev_priv,
 				   enum transcoder cpu_transcoder)
 {
-	return EDP_PSR_PERF_CNT(cpu_transcoder);
+	if (DISPLAY_VER(dev_priv) >= 8)
+		return EDP_PSR_PERF_CNT(cpu_transcoder);
+	else
+		return HSW_SRD_PERF_CNT;
 }
 
 static i915_reg_t psr_status_reg(struct drm_i915_private *dev_priv,
 				 enum transcoder cpu_transcoder)
 {
-	return EDP_PSR_STATUS(cpu_transcoder);
+	if (DISPLAY_VER(dev_priv) >= 8)
+		return EDP_PSR_STATUS(cpu_transcoder);
+	else
+		return HSW_SRD_STATUS;
 }
 
 static i915_reg_t psr_imr_reg(struct drm_i915_private *dev_priv,

drivers/gpu/drm/i915/display/intel_psr_regs.h

@@ -19,6 +19,7 @@
  * HSW PSR registers are relative to DDIA(_DDI_BUF_CTL_A + 0x800) with just one
  * instance of it
  */
+#define HSW_SRD_CTL				_MMIO(0x64800)
 #define _SRD_CTL_A				0x60800
 #define _SRD_CTL_EDP				0x6f800
 #define EDP_PSR_CTL(tran)			_MMIO_TRANS2(tran, _SRD_CTL_A)
@@ -83,6 +84,7 @@
 #define _SRD_AUX_DATA_EDP			0x6f814
 #define EDP_PSR_AUX_DATA(tran, i)		_MMIO_TRANS2(tran, _SRD_AUX_DATA_A + (i) * 4) /* 5 registers */
 
+#define HSW_SRD_STATUS				_MMIO(0x64840)
 #define _SRD_STATUS_A				0x60840
 #define _SRD_STATUS_EDP				0x6f840
 #define EDP_PSR_STATUS(tran)			_MMIO_TRANS2(tran, _SRD_STATUS_A)
@@ -107,12 +109,14 @@
 #define   EDP_PSR_STATUS_SENDING_TP1		REG_BIT(4)
 #define   EDP_PSR_STATUS_IDLE_MASK		REG_GENMASK(3, 0)
 
+#define HSW_SRD_PERF_CNT		_MMIO(0x64844)
 #define _SRD_PERF_CNT_A			0x60844
 #define _SRD_PERF_CNT_EDP		0x6f844
 #define EDP_PSR_PERF_CNT(tran)		_MMIO_TRANS2(tran, _SRD_PERF_CNT_A)
 #define   EDP_PSR_PERF_CNT_MASK		REG_GENMASK(23, 0)
 
 /* PSR_MASK on SKL+ */
+#define HSW_SRD_DEBUG				_MMIO(0x64860)
 #define _SRD_DEBUG_A				0x60860
 #define _SRD_DEBUG_EDP				0x6f860
 #define EDP_PSR_DEBUG(tran)			_MMIO_TRANS2(tran, _SRD_DEBUG_A)