Export headless sku bit (bit 13) from opregion->header->pcon as an interface to check if our device is headless configuration.
Bspec: 53441 Signed-off-by: Jouni Högander <[email protected]> --- drivers/gpu/drm/i915/display/intel_opregion.c | 12 ++++++++++++ drivers/gpu/drm/i915/display/intel_opregion.h | 7 +++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_opregion.c b/drivers/gpu/drm/i915/display/intel_opregion.c index f31e8c3f8ce0..eab3f2e6b786 100644 --- a/drivers/gpu/drm/i915/display/intel_opregion.c +++ b/drivers/gpu/drm/i915/display/intel_opregion.c @@ -53,6 +53,8 @@ #define MBOX_ASLE_EXT BIT(4) /* Mailbox #5 */ #define MBOX_BACKLIGHT BIT(5) /* Mailbox #2 (valid from v3.x) */ +#define PCON_HEADLESS_SKU BIT(13) + struct opregion_header { u8 signature[16]; u32 size; @@ -1135,6 +1137,16 @@ struct edid *intel_opregion_get_edid(struct intel_connector *intel_connector) return new_edid; } +bool intel_opregion_headless_sku(struct drm_i915_private *i915) +{ + struct intel_opregion *opregion = &i915->opregion; + + if (!opregion->header) + return false; + + return opregion->header->pcon & PCON_HEADLESS_SKU; +} + void intel_opregion_register(struct drm_i915_private *i915) { struct intel_opregion *opregion = &i915->opregion; diff --git a/drivers/gpu/drm/i915/display/intel_opregion.h b/drivers/gpu/drm/i915/display/intel_opregion.h index 82cc0ba34af7..5ad96e1d8278 100644 --- a/drivers/gpu/drm/i915/display/intel_opregion.h +++ b/drivers/gpu/drm/i915/display/intel_opregion.h @@ -76,6 +76,8 @@ int intel_opregion_notify_adapter(struct drm_i915_private *dev_priv, int intel_opregion_get_panel_type(struct drm_i915_private *dev_priv); struct edid *intel_opregion_get_edid(struct intel_connector *connector); +bool intel_opregion_headless_sku(struct drm_i915_private *i915); + #else /* CONFIG_ACPI*/ static inline int intel_opregion_setup(struct drm_i915_private *dev_priv) @@ -127,6 +129,11 @@ intel_opregion_get_edid(struct intel_connector *connector) return NULL; } +bool intel_opregion_headless_sku(struct drm_i915_private *i915) +{ + return false; +} + #endif /* CONFIG_ACPI */ #endif -- 2.25.1
