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| author | Deepak M <m.deepak@intel.com> | 2015-12-14 12:50:45 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2015-12-16 11:19:37 +0200 |
| commit | b3cbd98b2572ada8df1f183190bd867183369df7 (patch) | |
| tree | 910702dbb9a98a334cbf84cc7e5f97a7f5a004ba /drivers/gpu/drm/i915/intel_opregion.c | |
| parent | 663f3122d00c0b412d429f105dca129aa8f4f094 (diff) | |
| download | linux-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.c | 13 |
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 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: |