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Imre Deak 7ff9a17e37 drm/i915: Make the CRTC state consistent during sanitize-disabling
Make sure that the CRTC state is reset correctly, as expected after
disabling the CRTC.

In particular this change will:
- Zero all the CSC blob pointers after intel_crtc_free_hw_state()
  has freed them.
- Zero the shared DPLL and port PLL pointers and clear the
  corresponding CRTC reference flag in the PLL state.
- Reset all the transcoder and pipe fields.

v2:
- Reset fully the CRTC state. (Ville)
- Clear pipe active flags in the DPLL state.

v3:
- Clear only the CRTC reference flag and add a helper for this.
  (Ville)

v4:
- Rebased on previous patch, adding
  intel_unreference_shared_dpll_crtc() separately. (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-4-imre.deak@intel.com
History 2023-05-16 16:53:45 +03:00
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README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.