On Tue, 2015-12-01 at 04:17 +0530, Deepak M wrote: > 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 <[email protected]> Tested-by: Mika Kahola <[email protected]> > Signed-off-by: Deepak M <[email protected]> > --- > 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) {
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