Commit 9d9bb71f authored by Radhakrishna Sripada's avatar Radhakrishna Sripada Committed by Jani Nikula
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drm/i915: Extract opregion vbt presence check 



We want to later change intel_opregion_get_vbt to duplicate the vbt
memory if present, which would be an overkill when we just want to
peek into the presence of opregion vbt. Carve out the presence check
into its own function to use in places where only the presence of vbt
is required.

Suggested-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarRadhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240228213235.2495611-5-radhakrishna.sripada@intel.com
parent d962f0af

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

+1 −2
Original line number Diff line number Diff line
@@ -3414,8 +3414,7 @@ bool intel_bios_is_lvds_present(struct drm_i915_private *i915, u8 *i2c_pin) 
		 * additional data.  Trust that if the VBT was written into

		 * the OpRegion then they have validated the LVDS's existence.

		 */

		if (intel_opregion_get_vbt(i915, NULL))

			return true;

		return intel_opregion_vbt_present(i915);

	}



	return false;

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

+10 −0
Original line number Diff line number Diff line
@@ -1131,6 +1131,16 @@ const struct drm_edid *intel_opregion_get_edid(struct intel_connector *intel_con 
	return drm_edid;

}



bool intel_opregion_vbt_present(struct drm_i915_private *i915)

{

	struct intel_opregion *opregion = i915->display.opregion;



	if (!opregion || !opregion->vbt)

		return false;



	return true;

}



const void *intel_opregion_get_vbt(struct drm_i915_private *i915, size_t *size)

{

	struct intel_opregion *opregion = i915->display.opregion;

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

+1 −0
Original line number Diff line number Diff line
@@ -53,6 +53,7 @@ int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv, 
int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv);

const struct drm_edid *intel_opregion_get_edid(struct intel_connector *connector);



bool intel_opregion_vbt_present(struct drm_i915_private *i915);

const void *intel_opregion_get_vbt(struct drm_i915_private *i915, size_t *size);



bool intel_opregion_headless_sku(struct drm_i915_private *i915);