1c26b8e090
This is just an atomic version of mode_valid, which is intended to be used for situations where a driver might need to check the atomic state of objects other than the connector itself. One such example is with MST, where the maximum possible bandwidth on a connector can change dynamically irregardless of the display configuration. Changes since v1: * Use new drm logging functions * Make some corrections in the mode_valid_ctx kdoc * Return error codes or 0 from ->mode_valid_ctx() on fail, and store the drm_mode_status in an additional function parameter Changes since v2: * Don't accidentally assign ret to mode->status on success, or we'll squash legitimate mode validation results * Don't forget to assign MODE_OK to status in drm_connector_mode_valid() if we have no callbacks * Drop leftover hunk in drm_modes.h around enum drm_mode_status Changes since v3: * s/return ret/return 0/ in drm_mode_validate_pipeline() * Minor cleanup in drm_connector_mode_valid() Tested-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Imre Deak <imre.deak@intel.com> Cc: Lee Shawn C <shawn.c.lee@intel.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200713170746.254388-2-lyude@redhat.com
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/*
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* Copyright © 2016 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* This header file contains mode setting related functions and definitions
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* which are only used within the drm kms helper module as internal
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* implementation details and are not exported to drivers.
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*/
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#include <drm/drm_connector.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_dp_helper.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_modes.h>
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/* drm_fb_helper.c */
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#ifdef CONFIG_DRM_FBDEV_EMULATION
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int drm_fb_helper_modinit(void);
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#else
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static inline int drm_fb_helper_modinit(void)
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{
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return 0;
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}
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#endif
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/* drm_dp_aux_dev.c */
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#ifdef CONFIG_DRM_DP_AUX_CHARDEV
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int drm_dp_aux_dev_init(void);
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void drm_dp_aux_dev_exit(void);
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int drm_dp_aux_register_devnode(struct drm_dp_aux *aux);
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void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux);
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#else
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static inline int drm_dp_aux_dev_init(void)
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{
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return 0;
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}
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static inline void drm_dp_aux_dev_exit(void)
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{
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}
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static inline int drm_dp_aux_register_devnode(struct drm_dp_aux *aux)
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{
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return 0;
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}
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static inline void drm_dp_aux_unregister_devnode(struct drm_dp_aux *aux)
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{
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}
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#endif
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/* drm_probe_helper.c */
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enum drm_mode_status drm_crtc_mode_valid(struct drm_crtc *crtc,
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const struct drm_display_mode *mode);
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enum drm_mode_status drm_encoder_mode_valid(struct drm_encoder *encoder,
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const struct drm_display_mode *mode);
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int
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drm_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode,
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struct drm_modeset_acquire_ctx *ctx,
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enum drm_mode_status *status);
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struct drm_encoder *
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drm_connector_get_single_encoder(struct drm_connector *connector);
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