From 4cd4df8080a3e0d9b5a75dd52fa2133738def213 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Wed, 3 Dec 2014 16:44:34 +0100 Subject: [PATCH] drm/atomic: Add ->atomic_check() to encoder helpers This callback can be used instead of the legacy ->mode_fixup() and is passed the CRTC and connector states. It can thus use these states to validate the modeset and cache values in the state to be used during the actual modeset. Reviewed-by: Daniel Vetter Signed-off-by: Thierry Reding --- drivers/gpu/drm/drm_atomic_helper.c | 23 ++++++++++++++++------- include/drm/drm_crtc_helper.h | 6 ++++++ 2 files changed, 22 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index af5f539ed147..24c44c24dabe 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -297,13 +297,22 @@ mode_fixup(struct drm_atomic_state *state) } } - - ret = funcs->mode_fixup(encoder, &crtc_state->mode, - &crtc_state->adjusted_mode); - if (!ret) { - DRM_DEBUG_KMS("[ENCODER:%d:%s] fixup failed\n", - encoder->base.id, encoder->name); - return -EINVAL; + if (funcs->atomic_check) { + ret = funcs->atomic_check(encoder, crtc_state, + conn_state); + if (ret) { + DRM_DEBUG_KMS("[ENCODER:%d:%s] check failed\n", + encoder->base.id, encoder->name); + return ret; + } + } else { + ret = funcs->mode_fixup(encoder, &crtc_state->mode, + &crtc_state->adjusted_mode); + if (!ret) { + DRM_DEBUG_KMS("[ENCODER:%d:%s] fixup failed\n", + encoder->base.id, encoder->name); + return -EINVAL; + } } } diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h index e76828d81a8b..5810c027acdc 100644 --- a/include/drm/drm_crtc_helper.h +++ b/include/drm/drm_crtc_helper.h @@ -115,6 +115,7 @@ struct drm_crtc_helper_funcs { * @get_crtc: return CRTC that the encoder is currently attached to * @detect: connection status detection * @disable: disable encoder when not in use (overrides DPMS off) + * @atomic_check: check for validity of an atomic update * * The helper operations are called by the mid-layer CRTC helper. */ @@ -137,6 +138,11 @@ struct drm_encoder_helper_funcs { struct drm_connector *connector); /* disable encoder when not in use - more explicit than dpms off */ void (*disable)(struct drm_encoder *encoder); + + /* atomic helpers */ + int (*atomic_check)(struct drm_encoder *encoder, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state); }; /**