drm/i915/psr: Add alpm_parameters struct

Add new alpm_parameters struct into intel_psr for all calculated
alpm parameters.

v2: Move alpm_parameters struct definition to intel_psr struct

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240130111130.3298779-3-jouni.hogander@intel.com

Author: hogander

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

@@ -1712,8 +1712,12 @@ struct intel_psr {
 	bool psr2_sel_fetch_cff_enabled;
 	bool req_psr2_sdp_prior_scanline;
 	u8 sink_sync_latency;
-	u8 io_wake_lines;
-	u8 fast_wake_lines;
+
+	struct {
+		u8 io_wake_lines;
+		u8 fast_wake_lines;
+	} alpm_parameters;
+
 	ktime_t last_entry_attempt;
 	ktime_t last_exit;
 	bool sink_not_reliable;

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

@@ -779,8 +779,8 @@ static u32 intel_psr2_get_tp_time(struct intel_dp *intel_dp)
 
 static int psr2_block_count_lines(struct intel_dp *intel_dp)
 {
-	return intel_dp->psr.io_wake_lines < 9 &&
-		intel_dp->psr.fast_wake_lines < 9 ? 8 : 12;
+	return intel_dp->psr.alpm_parameters.io_wake_lines < 9 &&
+		intel_dp->psr.alpm_parameters.fast_wake_lines < 9 ? 8 : 12;
 }
 
 static int psr2_block_count(struct intel_dp *intel_dp)
@@ -817,6 +817,7 @@ static void dg2_activate_panel_replay(struct intel_dp *intel_dp)
 static void hsw_activate_psr2(struct intel_dp *intel_dp)
 {
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
+	struct intel_psr *psr = &intel_dp->psr;
 	enum transcoder cpu_transcoder = intel_dp->psr.transcoder;
 	u32 val = EDP_PSR2_ENABLE;
 	u32 psr_val = 0;
@@ -858,17 +859,18 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
 		 */
 		int tmp;
 
-		tmp = map[intel_dp->psr.io_wake_lines - TGL_EDP_PSR2_IO_BUFFER_WAKE_MIN_LINES];
+		tmp = map[psr->alpm_parameters.io_wake_lines -
+			  TGL_EDP_PSR2_IO_BUFFER_WAKE_MIN_LINES];
 		val |= TGL_EDP_PSR2_IO_BUFFER_WAKE(tmp + TGL_EDP_PSR2_IO_BUFFER_WAKE_MIN_LINES);
 
-		tmp = map[intel_dp->psr.fast_wake_lines - TGL_EDP_PSR2_FAST_WAKE_MIN_LINES];
+		tmp = map[psr->alpm_parameters.fast_wake_lines - TGL_EDP_PSR2_FAST_WAKE_MIN_LINES];
 		val |= TGL_EDP_PSR2_FAST_WAKE(tmp + TGL_EDP_PSR2_FAST_WAKE_MIN_LINES);
 	} else if (DISPLAY_VER(dev_priv) >= 12) {
-		val |= TGL_EDP_PSR2_IO_BUFFER_WAKE(intel_dp->psr.io_wake_lines);
-		val |= TGL_EDP_PSR2_FAST_WAKE(intel_dp->psr.fast_wake_lines);
+		val |= TGL_EDP_PSR2_IO_BUFFER_WAKE(psr->alpm_parameters.io_wake_lines);
+		val |= TGL_EDP_PSR2_FAST_WAKE(psr->alpm_parameters.fast_wake_lines);
 	} else if (DISPLAY_VER(dev_priv) >= 9) {
-		val |= EDP_PSR2_IO_BUFFER_WAKE(intel_dp->psr.io_wake_lines);
-		val |= EDP_PSR2_FAST_WAKE(intel_dp->psr.fast_wake_lines);
+		val |= EDP_PSR2_IO_BUFFER_WAKE(psr->alpm_parameters.io_wake_lines);
+		val |= EDP_PSR2_FAST_WAKE(psr->alpm_parameters.fast_wake_lines);
 	}
 
 	if (intel_dp->psr.req_psr2_sdp_prior_scanline)
@@ -1124,8 +1126,8 @@ static bool _compute_psr2_sdp_prior_scanline_indication(struct intel_dp *intel_d
 	return true;
 }
 
-static bool _compute_psr2_wake_times(struct intel_dp *intel_dp,
-				     struct intel_crtc_state *crtc_state)
+static bool _compute_alpm_params(struct intel_dp *intel_dp,
+				 struct intel_crtc_state *crtc_state)
 {
 	struct drm_i915_private *i915 = dp_to_i915(intel_dp);
 	int io_wake_lines, io_wake_time, fast_wake_lines, fast_wake_time;
@@ -1158,8 +1160,8 @@ static bool _compute_psr2_wake_times(struct intel_dp *intel_dp,
 		io_wake_lines = fast_wake_lines = max_wake_lines;
 
 	/* According to Bspec lower limit should be set as 7 lines. */
-	intel_dp->psr.io_wake_lines = max(io_wake_lines, 7);
-	intel_dp->psr.fast_wake_lines = max(fast_wake_lines, 7);
+	intel_dp->psr.alpm_parameters.io_wake_lines = max(io_wake_lines, 7);
+	intel_dp->psr.alpm_parameters.fast_wake_lines = max(fast_wake_lines, 7);
 
 	return true;
 }
@@ -1291,7 +1293,7 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
 		return false;
 	}
 
-	if (!_compute_psr2_wake_times(intel_dp, crtc_state)) {
+	if (!_compute_alpm_params(intel_dp, crtc_state)) {
 		drm_dbg_kms(&dev_priv->drm,
 			    "PSR2 not enabled, Unable to use long enough wake times\n");
 		return false;