diff options
| author | Damien Lespiau <damien.lespiau@intel.com> | 2014-02-10 17:19:45 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-02-12 18:53:00 +0100 |
| commit | 658ac4c6a29cfe7cedd494fb4b74acc3643dabab (patch) | |
| tree | e60f4fa6288f6e817f4cd892e94d495438de2582 /drivers/gpu/drm/i915/i915_reg.h | |
| parent | 6e4930f6ee74a4aefe13a153f0fecae78cf8ad97 (diff) | |
| download | lwn-658ac4c6a29cfe7cedd494fb4b74acc3643dabab.tar.gz lwn-658ac4c6a29cfe7cedd494fb4b74acc3643dabab.zip | |
drm/i915: Disable display when fused off
FUSE_STRAP has a bit to inform us that the display has been fused off.
Use it to setup the definitive number of pipes at run-time.
v2: actually tweak num_pipes, not num_planes
v3: also tests SFUSE_STRAP bit 7
v4: rebase on top of drm-nightly
use DRM_INFO() for the message telling display is fused off
try to read the FUSE_LOCK bit to determine if PCH display is disabled
v5: Don't read SFUSE_STRAP (register on the PCH) if num_pipes is already 0
from the initial device info struct (to prevent hangs) (Daniel Vetter)
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com> (for v3)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (for v3)
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_reg.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index ad044b7d12e6..fc03142e4ae7 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5444,6 +5444,8 @@ /* SFUSE_STRAP */ #define SFUSE_STRAP 0xc2014 +#define SFUSE_STRAP_FUSE_LOCK (1<<13) +#define SFUSE_STRAP_DISPLAY_DISABLED (1<<7) #define SFUSE_STRAP_DDIB_DETECTED (1<<2) #define SFUSE_STRAP_DDIC_DETECTED (1<<1) #define SFUSE_STRAP_DDID_DETECTED (1<<0) |