From: Deepak M <m.dee...@intel.com>
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.
v4 by Jani:
- don't add asle_ext to dev_priv as it's unused
- use u8 for bddc and rsvd fields in asle ext struct
- add BUILD_BUG_ON the asle ext struct size
- debug logging for asle ext present
Cc: Jani Nikula <jani.nik...@intel.com>
Signed-off-by: Deepak M <m.dee...@intel.com>
Signed-off-by: Jani Nikula <jani.nik...@intel.com>
---
drivers/gpu/drm/i915/intel_opregion.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_opregion.c
b/drivers/gpu/drm/i915/intel_opregion.c
index 64efedfad879..cd97b9a5df57 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 */
+ u8 bddc[256]; /* Panel EDID */
+ u8 rsvd[764];
+} __packed;
+
/* Driver readiness indicator */
#define ASLE_ARDY_READY (1 << 0)
#define ASLE_ARDY_NOT_READY (0 << 0)
@@ -909,6 +917,7 @@ int intel_opregion_setup(struct drm_device *dev)
BUILD_BUG_ON(sizeof(struct opregion_acpi) != 0x100);
BUILD_BUG_ON(sizeof(struct opregion_swsci) != 0x100);
BUILD_BUG_ON(sizeof(struct opregion_asle) != 0x100);
+ BUILD_BUG_ON(sizeof(struct opregion_asle_ext) != 0x400);
pci_read_config_dword(dev->pdev, PCI_ASLS, &asls);
DRM_DEBUG_DRIVER("graphic opregion physical addr: 0x%x\n", asls);
@@ -948,6 +957,7 @@ int intel_opregion_setup(struct drm_device *dev)
opregion->swsci = base + OPREGION_SWSCI_OFFSET;
swsci_setup(dev);
}
+
if (mboxes & MBOX_ASLE) {
DRM_DEBUG_DRIVER("ASLE supported\n");
opregion->asle = base + OPREGION_ASLE_OFFSET;
@@ -955,6 +965,9 @@ int intel_opregion_setup(struct drm_device *dev)
opregion->asle->ardy = ASLE_ARDY_NOT_READY;
}
+ if (mboxes & MBOX_ASLE_EXT)
+ DRM_DEBUG_DRIVER("ASLE extension supported\n");
+
return 0;
err_out:
--
2.1.4
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
