Mailbox 5 is BIOS to Driver Notification mailbox is intended
to support BIOS to Driver event notification or data storage
for BIOS to Driver data synchronization purpose. Mailbox 5 is
the extension of mailbox 3.
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Deepak M <m.deepak@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/intel_opregion.c | 9 +++++++++
2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 71bd1dc..135d32a 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -457,6 +457,7 @@ struct intel_opregion {
u32 swsci_sbcb_sub_functions;
struct opregion_asle *asle;
void *vbt;
+ struct opregion_asle_ext *asle_ext;
u32 *lid_state;
struct work_struct asle_work;
};
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 64efedf..43b7c3b 100644
--- a/drivers/gpu/drm/i915/intel_opregion.c
+++ b/drivers/gpu/drm/i915/intel_opregion.c
@@ -46,6 +46,7 @@
#define OPREGION_SWSCI_OFFSET 0x200
#define OPREGION_ASLE_OFFSET 0x300
#define OPREGION_VBT_OFFSET 0x400
+#define OPREGION_ASLE_EXT_OFFSET 0x1C00
#define OPREGION_SIGNATURE "IntelGraphicsMem"
#define MBOX_ACPI (1<<0)
@@ -125,6 +126,13 @@ struct opregion_asle {
u8 rsvd[58];
} __packed;
+/* OpRegion mailbox #5: ASLE ext */
+struct opregion_asle_ext {
+ u32 phed; /* Panel Header */
+ u32 bddc[64]; /* Panel EDID */
+ u32 rsvd[191];
+} __packed;
+
/* Driver readiness indicator */
#define ASLE_ARDY_READY (1 << 0)
#define ASLE_ARDY_NOT_READY (0 << 0)
@@ -936,6 +944,7 @@ int intel_opregion_setup(struct drm_device *dev)
opregion->vbt = base + OPREGION_VBT_OFFSET;
opregion->lid_state = base + ACPI_CLID;
+ opregion->asle_ext = base + OPREGION_ASLE_EXT_OFFSET;
mboxes = opregion->header->mboxes;
if (mboxes & MBOX_ACPI) {
--
1.9.1
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