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| author | Jani Nikula <jani.nikula@intel.com> | 2021-08-23 19:18:12 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2021-08-24 11:02:55 +0300 |
| commit | 48efd014f0ea898b0975e77156acb752047d4449 (patch) | |
| tree | 2cc5ecd8b0bab0c4a2a76323d12c59646a947295 /drivers/gpu/drm/i915/display/intel_dp.h | |
| parent | e752d1f9c14a61b0996bdbcaf024ef587c6af9d8 (diff) | |
| download | linux-48efd014f0ea898b0975e77156acb752047d4449.tar.gz linux-48efd014f0ea898b0975e77156acb752047d4449.tar.bz2 linux-48efd014f0ea898b0975e77156acb752047d4449.zip | |
drm/i915/dp: add max data rate calculation for UHBR rates
DP 2.0 UHBR link rates always use 128b/132b channel encoding, which has
a different data bandwidth efficiency from 8b/10b. The computation is
slightly convoluted due to the units we use; this is all explained in
the added comment.
v2: Clarified comment (Manasi)
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/8afd8d97a04c2d86c2dcadfed9f8e1f84272a13c.1629735412.git.jani.nikula@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h index 1345d588fc6d..ae0f776bffab 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -88,7 +88,7 @@ bool intel_dp_source_supports_hbr3(struct intel_dp *intel_dp); bool intel_dp_get_colorimetry_status(struct intel_dp *intel_dp); int intel_dp_link_required(int pixel_clock, int bpp); -int intel_dp_max_data_rate(int max_link_clock, int max_lanes); +int intel_dp_max_data_rate(int max_link_rate, int max_lanes); bool intel_dp_can_bigjoiner(struct intel_dp *intel_dp); bool intel_dp_needs_vsc_sdp(const struct intel_crtc_state *crtc_state, const struct drm_connector_state *conn_state); |