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authorDeepak M <m.deepak@intel.com>2015-12-14 12:50:45 +0200
committerJani Nikula <jani.nikula@intel.com>2015-12-16 11:19:37 +0200
commitb3cbd98b2572ada8df1f183190bd867183369df7 (patch)
tree910702dbb9a98a334cbf84cc7e5f97a7f5a004ba /drivers/gpu/drm/i915/intel_opregion.c
parent663f3122d00c0b412d429f105dca129aa8f4f094 (diff)
downloadop-kernel-dev-b3cbd98b2572ada8df1f183190bd867183369df7.zip
op-kernel-dev-b3cbd98b2572ada8df1f183190bd867183369df7.tar.gz
drm/i915: Add Intel opregion mailbox 5 structure
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.nikula@intel.com> Signed-off-by: Deepak M <m.deepak@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/c2d4009659fca32280d9859ec34a62f45b86d895.1450089383.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/intel_opregion.c')
-rw-r--r--drivers/gpu/drm/i915/intel_opregion.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
index 64efedf..cd97b9a 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:
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