[PATCH 2/3] drm/i915: Introduce intel_encoder_phy_data_lookup

[Radhakrishna Sripada]

This patch introduces phy version of intel_encoder_port_data_lookup.
Port based variant is dependent on vbt child data extraction and
conversion to port data to be used further. Port data is not immediately
available and is difficult to be determined from phy info.

Signed-off-by: Radhakrishna Sripada <radhakrishna.srip...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.c | 13 +++++++++++++
 drivers/gpu/drm/i915/display/intel_bios.h |  3 +++
 2 files changed, 16 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c 
b/drivers/gpu/drm/i915/display/intel_bios.c
index febc607267f0..0b21364b2bdf 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -3648,6 +3648,19 @@ intel_bios_encoder_port_data_lookup(struct 
drm_i915_private *i915, enum port por
        return NULL;
 }
 
+const struct intel_bios_encoder_data *
+intel_bios_encoder_phy_data_lookup(struct drm_i915_private *i915, enum phy phy)
+{
+       struct intel_bios_encoder_data *devdata;
+
+       list_for_each_entry(devdata, &i915->display.vbt.display_devices, node) {
+               if (intel_port_to_phy(i915, intel_bios_encoder_port(devdata)) 
== phy)
+                       return devdata;
+       }
+
+       return NULL;
+}
+
 void intel_bios_for_each_encoder(struct drm_i915_private *i915,
                                 void (*func)(struct drm_i915_private *i915,
                                              const struct 
intel_bios_encoder_data *devdata))
diff --git a/drivers/gpu/drm/i915/display/intel_bios.h 
b/drivers/gpu/drm/i915/display/intel_bios.h
index a296aad7f545..2861ebb13909 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.h
+++ b/drivers/gpu/drm/i915/display/intel_bios.h
@@ -39,6 +39,7 @@ struct intel_crtc_state;
 struct intel_encoder;
 struct intel_panel;
 enum aux_ch;
+enum phy;
 enum port;
 
 enum intel_backlight_type {
@@ -254,6 +255,8 @@ bool intel_bios_get_dsc_params(struct intel_encoder 
*encoder,
 bool intel_bios_port_supports_typec_usb(struct drm_i915_private *i915, enum 
port port);
 bool intel_bios_port_supports_tbt(struct drm_i915_private *i915, enum port 
port);
 
+const struct intel_bios_encoder_data *
+intel_bios_encoder_phy_data_lookup(struct drm_i915_private *i915, enum phy 
phy);
 const struct intel_bios_encoder_data *
 intel_bios_encoder_port_data_lookup(struct drm_i915_private *i915, enum port 
port);
 
-- 
2.34.1