From: José Roberto de Souza <[email protected]> Disable CRTC/pipes in reverse order because some features (MST in TGL+) requires master and slave relationship between pipes, so it should always pick the lowest pipe as master as it will be enabled first and disable in the reverse order so the master will be the last one to be disabled.
Cc: Rodrigo Vivi <[email protected]> Cc: Ville Syrjälä <[email protected]> Signed-off-by: José Roberto de Souza <[email protected]> Signed-off-by: Lucas De Marchi <[email protected]> --- drivers/gpu/drm/i915/display/intel_display.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 6c6a5a5f41bb..72c41d3affb1 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -13924,7 +13924,15 @@ static void intel_atomic_commit_tail(struct intel_atomic_state *state) if (state->modeset) wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET); - for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) { + /* + * Disable CRTC/pipes in reverse order because some features(MST in + * TGL+) requires master and slave relationship between pipes, so it + * should always pick the lowest pipe as master as it will be enabled + * first and disable in the reverse order so the master will be the + * last one to be disabled. + */ + for_each_oldnew_intel_crtc_in_state_reverse(state, crtc, old_crtc_state, + new_crtc_state, i) { if (needs_modeset(new_crtc_state) || new_crtc_state->update_pipe) { -- 2.21.0 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
