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author | Lionel Landwerlin <lionel.g.landwerlin@intel.com> | 2016-03-16 10:57:15 +0000 |
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committer | Matt Roper <matthew.d.roper@intel.com> | 2016-03-21 11:40:11 -0700 |
commit | 05dc698c2e5c9d4453f62fd1cd5acbc68bc97b0f (patch) | |
tree | 56bc96f558247990cc7ff42e3364e4330665c20d /Documentation/DocBook | |
parent | 8563b1e8ef88c8bdb824ab1c00ebb7d66308fef0 (diff) | |
download | op-kernel-dev-05dc698c2e5c9d4453f62fd1cd5acbc68bc97b0f.zip op-kernel-dev-05dc698c2e5c9d4453f62fd1cd5acbc68bc97b0f.tar.gz |
drm/i915: Do not read GAMMA_MODE register
Implement Daniel Stone's recommendation to not read registers to infer
the hardware's state.
v2: Read GAMMA_MODE register value at init (Matt Roper's comment)
v3: Read GAMMA_MODE register in intel_modeset_readout_hw_state along
with other registers (Matt Roper's comment).
v4: Mask GAMMA_MODE register with interesting bits when reading
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1458125837-2576-3-git-send-email-lionel.g.landwerlin@intel.com
Diffstat (limited to 'Documentation/DocBook')
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