drm/i915/bios: Split VBT data into per-panel vs. global parts

Move the panel specific VBT parsing to happen during the
output probing stage. Needs to be done because the VBT
parsing will need to look at the EDID to determine
the correct panel_type on some machines.

We split the parsed VBT data (i915->vbt) along the same
boundary. For the moment we just hoist all the panel
specific stuff into connector->panel.vbt since that seems
like the most convenient place for eg. the backlight code.

Note that we simply drop the drrs type check from
intel_drrs_frontbuffer_update() since that operates on the whole
device rather than a specific connector/encoder. But the check
was just a micro optimization so removing it doesn't actually
mattter for correctness.

TODO: Lot's of cleanup to be done in the future. Eg. most of
the DSI stuff could probably be eliminated entirely and just
parsed on demand during DSI init.

v2: Note the intel_drrs_frontbuffer_update() change

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220510104242.6099-13-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

1 files changed, 17 insertions, 13 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 36356893c7ca..aedb3e0e69ec 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -399,6 +399,7 @@ static void intel_psr_enable_sink(struct intel_dp *intel_dp)
 
 static u32 intel_psr1_get_tp_time(struct intel_dp *intel_dp)
 {
+	struct intel_connector *connector = intel_dp->attached_connector;
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 val = 0;
 
@@ -411,20 +412,20 @@ static u32 intel_psr1_get_tp_time(struct intel_dp *intel_dp)
 		goto check_tp3_sel;
 	}
 
-	if (dev_priv->vbt.psr.tp1_wakeup_time_us == 0)
+	if (connector->panel.vbt.psr.tp1_wakeup_time_us == 0)
 		val |= EDP_PSR_TP1_TIME_0us;
-	else if (dev_priv->vbt.psr.tp1_wakeup_time_us <= 100)
+	else if (connector->panel.vbt.psr.tp1_wakeup_time_us <= 100)
 		val |= EDP_PSR_TP1_TIME_100us;
-	else if (dev_priv->vbt.psr.tp1_wakeup_time_us <= 500)
+	else if (connector->panel.vbt.psr.tp1_wakeup_time_us <= 500)
 		val |= EDP_PSR_TP1_TIME_500us;
 	else
 		val |= EDP_PSR_TP1_TIME_2500us;
 
-	if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us == 0)
+	if (connector->panel.vbt.psr.tp2_tp3_wakeup_time_us == 0)
 		val |= EDP_PSR_TP2_TP3_TIME_0us;
-	else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 100)
+	else if (connector->panel.vbt.psr.tp2_tp3_wakeup_time_us <= 100)
 		val |= EDP_PSR_TP2_TP3_TIME_100us;
-	else if (dev_priv->vbt.psr.tp2_tp3_wakeup_time_us <= 500)
+	else if (connector->panel.vbt.psr.tp2_tp3_wakeup_time_us <= 500)
 		val |= EDP_PSR_TP2_TP3_TIME_500us;
 	else
 		val |= EDP_PSR_TP2_TP3_TIME_2500us;
@@ -441,13 +442,14 @@ check_tp3_sel:
 
 static u8 psr_compute_idle_frames(struct intel_dp *intel_dp)
 {
+	struct intel_connector *connector = intel_dp->attached_connector;
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	int idle_frames;
 
 	/* Let's use 6 as the minimum to cover all known cases including the
 	 * off-by-one issue that HW has in some cases.
 	 */
-	idle_frames = max(6, dev_priv->vbt.psr.idle_frames);
+	idle_frames = max(6, connector->panel.vbt.psr.idle_frames);
 	idle_frames = max(idle_frames, intel_dp->psr.sink_sync_latency + 1);
 
 	if (drm_WARN_ON(&dev_priv->drm, idle_frames > 0xf))
@@ -483,18 +485,19 @@ static void hsw_activate_psr1(struct intel_dp *intel_dp)
 
 static u32 intel_psr2_get_tp_time(struct intel_dp *intel_dp)
 {
+	struct intel_connector *connector = intel_dp->attached_connector;
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	u32 val = 0;
 
 	if (dev_priv->params.psr_safest_params)
 		return EDP_PSR2_TP2_TIME_2500us;
 
-	if (dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us >= 0 &&
-	    dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 50)
+	if (connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us >= 0 &&
+	    connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 50)
 		val |= EDP_PSR2_TP2_TIME_50us;
-	else if (dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 100)
+	else if (connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 100)
 		val |= EDP_PSR2_TP2_TIME_100us;
-	else if (dev_priv->vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 500)
+	else if (connector->panel.vbt.psr.psr2_tp2_tp3_wakeup_time_us <= 500)
 		val |= EDP_PSR2_TP2_TIME_500us;
 	else
 		val |= EDP_PSR2_TP2_TIME_2500us;
@@ -2367,6 +2370,7 @@ unlock:
  */
 void intel_psr_init(struct intel_dp *intel_dp)
 {
+	struct intel_connector *connector = intel_dp->attached_connector;
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 
@@ -2391,13 +2395,13 @@ void intel_psr_init(struct intel_dp *intel_dp)
 	intel_dp->psr.source_support = true;
 
 	if (dev_priv->params.enable_psr == -1)
-		if (!dev_priv->vbt.psr.enable)
+		if (!connector->panel.vbt.psr.enable)
 			dev_priv->params.enable_psr = 0;
 
 	/* Set link_standby x link_off defaults */
 	if (DISPLAY_VER(dev_priv) < 12)
 		/* For new platforms up to TGL let's respect VBT back again */
-		intel_dp->psr.link_standby = dev_priv->vbt.psr.full_link;
+		intel_dp->psr.link_standby = connector->panel.vbt.psr.full_link;
 
 	INIT_WORK(&intel_dp->psr.work, intel_psr_work);
 	INIT_DELAYED_WORK(&intel_dp->psr.dc3co_work, tgl_dc3co_disable_work);