drm/i915/cdclk: Introduce has_cd2x_pipe_select()

We have several open coded checks for the platform's
cd2x pipe select capability, each written slightly
differently. Move it all into a common
has_cd2x_pipe_select() helper.

No functional changes as the previous 'DISPLAY_VER < 30'
checks were in codepaths that already exclude pre-bxt
platforms, and intel_cdclk_can_cd2x_update() already
rejects PTL+ via the later HAS_CDCLK_SQUASH() check.

Also update the docs for the register bitfield while at it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260717155107.17801-2-ville.syrjala@linux.intel.com
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>

0 files changed, 0 insertions, 0 deletions