From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755783AbdEIRBO (ORCPT ); Tue, 9 May 2017 13:01:14 -0400 Received: from smtprelay2.synopsys.com ([198.182.60.111]:36162 "EHLO smtprelay.synopsys.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755655AbdEIRBM (ORCPT ); Tue, 9 May 2017 13:01:12 -0400 From: Jose Abreu To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: Jose Abreu , Carlos Palminha , Alexey Brodkin , =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= , Daniel Vetter , Dave Airlie , Andrzej Hajda , Archit Taneja Subject: [PATCH v2 7/8] drm: Use mode_valid() in atomic modeset Date: Tue, 9 May 2017 18:00:14 +0100 Message-Id: <61cee0404343a363c459a377d2ff53f5c13b1230.1494347165.git.joabreu@synopsys.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patches makes use of the new mode_valid() callbacks introduced previously to validate the full video pipeline when modesetting. This calls the connector->mode_valid(), encoder->mode_valid(), bridge->mode_valid() and crtc->mode_valid() so that we can make sure that the mode will be accepted in every components. Signed-off-by: Jose Abreu Cc: Carlos Palminha Cc: Alexey Brodkin Cc: Ville Syrjälä Cc: Daniel Vetter Cc: Dave Airlie Cc: Andrzej Hajda Cc: Archit Taneja --- Changes v1->v2: - Removed call to connector->mode_valid (Ville, Daniel) - Change function name (Ville) - Use for_each_new_connector_in_state (Ville) - Do not validate if connector and mode didn't change (Ville) - Use new helpers to call mode_valid drivers/gpu/drm/drm_atomic_helper.c | 75 +++++++++++++++++++++++++++++++++++-- 1 file changed, 72 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 8be9719..19d0ea1 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -452,6 +452,69 @@ static int handle_conflicting_encoders(struct drm_atomic_state *state, return 0; } +static enum drm_mode_status mode_valid_path(struct drm_connector *connector, + struct drm_encoder *encoder, + struct drm_crtc *crtc, + struct drm_display_mode *mode) +{ + enum drm_mode_status ret; + + ret = drm_encoder_mode_valid(encoder, mode); + if (ret != MODE_OK) { + DRM_DEBUG_ATOMIC("[ENCODER:%d:%s] mode_valid() failed\n", + encoder->base.id, encoder->name); + return ret; + } + + ret = drm_bridge_mode_valid(encoder->bridge, mode); + if (ret != MODE_OK) { + DRM_DEBUG_ATOMIC("[BRIDGE] mode_valid() failed\n"); + return ret; + } + + ret = drm_crtc_mode_valid(crtc, mode); + if (ret != MODE_OK) { + DRM_DEBUG_ATOMIC("[CRTC:%d:%s] mode_valid() failed\n", + crtc->base.id, crtc->name); + return ret; + } + + return ret; +} + +static int +mode_valid(struct drm_atomic_state *state) +{ + struct drm_connector_state *conn_state; + struct drm_connector *connector; + int i; + + for_each_new_connector_in_state(state, connector, conn_state, i) { + struct drm_encoder *encoder = conn_state->best_encoder; + struct drm_crtc *crtc = conn_state->crtc; + struct drm_crtc_state *crtc_state; + enum drm_mode_status mode_status; + struct drm_display_mode *mode; + + if (!crtc || !encoder) + continue; + + crtc_state = drm_atomic_get_new_crtc_state(state, crtc); + if (!crtc_state) + continue; + if (!crtc_state->mode_changed && !crtc_state->connectors_changed) + continue; + + mode = &crtc_state->mode; + + mode_status = mode_valid_path(connector, encoder, crtc, mode); + if (mode_status != MODE_OK) + return -EINVAL; + } + + return 0; +} + /** * drm_atomic_helper_check_modeset - validate state object for modeset changes * @dev: DRM device @@ -466,13 +529,15 @@ static int handle_conflicting_encoders(struct drm_atomic_state *state, * 2. &drm_connector_helper_funcs.atomic_check to validate the connector state. * 3. If it's determined a modeset is needed then all connectors on the affected crtc * crtc are added and &drm_connector_helper_funcs.atomic_check is run on them. - * 4. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. - * 5. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. + * 4. &drm_encoder_helper_funcs.mode_valid, &drm_bridge_funcs.mode_valid and + * &drm_crtc_helper_funcs.mode_valid are called on the affected components. + * 5. &drm_bridge_funcs.mode_fixup is called on all encoder bridges. + * 6. &drm_encoder_helper_funcs.atomic_check is called to validate any encoder state. * This function is only called when the encoder will be part of a configured crtc, * it must not be used for implementing connector property validation. * If this function is NULL, &drm_atomic_encoder_helper_funcs.mode_fixup is called * instead. - * 6. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. + * 7. &drm_crtc_helper_funcs.mode_fixup is called last, to fix up the mode with crtc constraints. * * &drm_crtc_state.mode_changed is set when the input mode is changed. * &drm_crtc_state.connectors_changed is set when a connector is added or @@ -617,6 +682,10 @@ static int handle_conflicting_encoders(struct drm_atomic_state *state, return ret; } + ret = mode_valid(state); + if (ret) + return ret; + return mode_fixup(state); } EXPORT_SYMBOL(drm_atomic_helper_check_modeset); -- 1.9.1