diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_link_bw.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_link_bw.c | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_link_bw.c b/drivers/gpu/drm/i915/display/intel_link_bw.c index 3caef7f9c7c4..f52dee0ea412 100644 --- a/drivers/gpu/drm/i915/display/intel_link_bw.c +++ b/drivers/gpu/drm/i915/display/intel_link_bw.c @@ -165,6 +165,34 @@ int intel_link_bw_reduce_bpp(struct intel_atomic_state *state, } /** + * intel_link_bw_compute_pipe_bpp - compute pipe bpp limited by max link bpp + * @crtc_state: the crtc state + * + * Compute the pipe bpp limited by the CRTC's maximum link bpp. Encoders can + * call this function during state computation in the simple case where the + * link bpp will always match the pipe bpp. This is the case for all non-DP + * encoders, while DP encoders will use a link bpp lower than pipe bpp in case + * of DSC compression. + * + * Returns %true in case of success, %false if pipe bpp would need to be + * reduced below its valid range. + */ +bool intel_link_bw_compute_pipe_bpp(struct intel_crtc_state *crtc_state) +{ + int pipe_bpp = min(crtc_state->pipe_bpp, + fxp_q4_to_int(crtc_state->max_link_bpp_x16)); + + pipe_bpp = rounddown(pipe_bpp, 2 * 3); + + if (pipe_bpp < 6 * 3) + return false; + + crtc_state->pipe_bpp = pipe_bpp; + + return true; +} + +/** * intel_link_bw_set_bpp_limit_for_pipe - set link bpp limit for a pipe to its minimum * @state: atomic state * @old_limits: link BW limits @@ -449,6 +477,7 @@ void intel_link_bw_connector_debugfs_add(struct intel_connector *connector) switch (connector->base.connector_type) { case DRM_MODE_CONNECTOR_DisplayPort: case DRM_MODE_CONNECTOR_eDP: + case DRM_MODE_CONNECTOR_HDMIA: break; case DRM_MODE_CONNECTOR_VGA: case DRM_MODE_CONNECTOR_SVIDEO: @@ -458,11 +487,6 @@ void intel_link_bw_connector_debugfs_add(struct intel_connector *connector) break; return; - case DRM_MODE_CONNECTOR_HDMIA: - if (HAS_FDI(display) && !HAS_DDI(display)) - break; - - return; default: return; } |