From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751115AbdE3H15 (ORCPT ); Tue, 30 May 2017 03:27:57 -0400 Received: from mail-wm0-f50.google.com ([74.125.82.50]:35079 "EHLO mail-wm0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751002AbdE3H14 (ORCPT ); Tue, 30 May 2017 03:27:56 -0400 Subject: Re: [PATCH v5 04/10] drm: Use mode_valid() in atomic modeset To: Jose Abreu , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org References: Cc: Daniel Vetter , Carlos Palminha , Laurent Pinchart From: Neil Armstrong Organization: Baylibre Message-ID: <2aa619b7-45cc-9e33-6eef-77861050a328@baylibre.com> Date: Tue, 30 May 2017 09:27:48 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: 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 On 05/25/2017 04:19 PM, Jose Abreu wrote: > 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 > Reviewed-by: Daniel Vetter > Reviewed-by: Andrzej Hajda > Cc: Carlos Palminha > Cc: Ville Syrjälä > Cc: Daniel Vetter > Cc: Dave Airlie > Cc: Andrzej Hajda > Cc: Archit Taneja > Cc: Laurent Pinchart > > Changes v1->v2: > - Removed call to connector->mode_valid (Ville, Daniel) > - Changed 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 > > Signed-off-by: Jose Abreu > --- > drivers/gpu/drm/drm_atomic_helper.c | 76 +++++++++++++++++++++++++++++++++++-- > 1 file changed, 73 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c > index 6426339..21afca4 100644 > --- a/drivers/gpu/drm/drm_atomic_helper.c > +++ b/drivers/gpu/drm/drm_atomic_helper.c > @@ -32,6 +32,7 @@ > #include > #include > > +#include "drm_crtc_helper_internal.h" > #include "drm_crtc_internal.h" > > /** > @@ -452,6 +453,69 @@ 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 +530,15 @@ 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 +683,10 @@ 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); > Reviewed-by: Neil Armstrong