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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4a1b071427
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
1026 lines
28 KiB
C
1026 lines
28 KiB
C
/*
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* Copyright (c) 2006-2008 Intel Corporation
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* Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
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*
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* DRM core CRTC related functions
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*
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* Authors:
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* Keith Packard
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* Eric Anholt <eric@anholt.net>
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* Dave Airlie <airlied@linux.ie>
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* Jesse Barnes <jesse.barnes@intel.com>
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*/
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#include <linux/export.h>
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#include <linux/moduleparam.h>
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#include "drmP.h"
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#include "drm_crtc.h"
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#include "drm_fourcc.h"
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#include "drm_crtc_helper.h"
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#include "drm_fb_helper.h"
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#include "drm_edid.h"
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static bool drm_kms_helper_poll = true;
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module_param_named(poll, drm_kms_helper_poll, bool, 0600);
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static void drm_mode_validate_flag(struct drm_connector *connector,
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int flags)
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{
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struct drm_display_mode *mode;
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if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE))
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return;
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list_for_each_entry(mode, &connector->modes, head) {
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if ((mode->flags & DRM_MODE_FLAG_INTERLACE) &&
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!(flags & DRM_MODE_FLAG_INTERLACE))
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mode->status = MODE_NO_INTERLACE;
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if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) &&
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!(flags & DRM_MODE_FLAG_DBLSCAN))
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mode->status = MODE_NO_DBLESCAN;
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}
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return;
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}
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/**
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* drm_helper_probe_single_connector_modes - get complete set of display modes
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* @dev: DRM device
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* @maxX: max width for modes
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* @maxY: max height for modes
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*
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* LOCKING:
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* Caller must hold mode config lock.
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*
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* Based on @dev's mode_config layout, scan all the connectors and try to detect
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* modes on them. Modes will first be added to the connector's probed_modes
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* list, then culled (based on validity and the @maxX, @maxY parameters) and
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* put into the normal modes list.
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*
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* Intended to be used either at bootup time or when major configuration
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* changes have occurred.
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*
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* FIXME: take into account monitor limits
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*
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* RETURNS:
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* Number of modes found on @connector.
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*/
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int drm_helper_probe_single_connector_modes(struct drm_connector *connector,
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uint32_t maxX, uint32_t maxY)
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{
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struct drm_device *dev = connector->dev;
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struct drm_display_mode *mode;
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struct drm_connector_helper_funcs *connector_funcs =
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connector->helper_private;
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int count = 0;
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int mode_flags = 0;
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DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id,
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drm_get_connector_name(connector));
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/* set all modes to the unverified state */
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list_for_each_entry(mode, &connector->modes, head)
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mode->status = MODE_UNVERIFIED;
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if (connector->force) {
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if (connector->force == DRM_FORCE_ON)
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connector->status = connector_status_connected;
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else
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connector->status = connector_status_disconnected;
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if (connector->funcs->force)
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connector->funcs->force(connector);
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} else {
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connector->status = connector->funcs->detect(connector, true);
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drm_kms_helper_poll_enable(dev);
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}
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if (connector->status == connector_status_disconnected) {
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DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n",
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connector->base.id, drm_get_connector_name(connector));
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drm_mode_connector_update_edid_property(connector, NULL);
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goto prune;
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}
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#ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE
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count = drm_load_edid_firmware(connector);
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if (count == 0)
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#endif
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count = (*connector_funcs->get_modes)(connector);
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if (count == 0 && connector->status == connector_status_connected)
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count = drm_add_modes_noedid(connector, 1024, 768);
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if (count == 0)
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goto prune;
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drm_mode_connector_list_update(connector);
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if (maxX && maxY)
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drm_mode_validate_size(dev, &connector->modes, maxX,
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maxY, 0);
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if (connector->interlace_allowed)
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mode_flags |= DRM_MODE_FLAG_INTERLACE;
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if (connector->doublescan_allowed)
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mode_flags |= DRM_MODE_FLAG_DBLSCAN;
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drm_mode_validate_flag(connector, mode_flags);
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list_for_each_entry(mode, &connector->modes, head) {
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if (mode->status == MODE_OK)
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mode->status = connector_funcs->mode_valid(connector,
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mode);
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}
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prune:
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drm_mode_prune_invalid(dev, &connector->modes, true);
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if (list_empty(&connector->modes))
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return 0;
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drm_mode_sort(&connector->modes);
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DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id,
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drm_get_connector_name(connector));
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list_for_each_entry(mode, &connector->modes, head) {
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mode->vrefresh = drm_mode_vrefresh(mode);
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drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
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drm_mode_debug_printmodeline(mode);
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}
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return count;
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}
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EXPORT_SYMBOL(drm_helper_probe_single_connector_modes);
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/**
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* drm_helper_encoder_in_use - check if a given encoder is in use
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* @encoder: encoder to check
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*
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* LOCKING:
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* Caller must hold mode config lock.
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*
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* Walk @encoders's DRM device's mode_config and see if it's in use.
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*
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* RETURNS:
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* True if @encoder is part of the mode_config, false otherwise.
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*/
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bool drm_helper_encoder_in_use(struct drm_encoder *encoder)
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{
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struct drm_connector *connector;
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struct drm_device *dev = encoder->dev;
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list_for_each_entry(connector, &dev->mode_config.connector_list, head)
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if (connector->encoder == encoder)
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return true;
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return false;
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}
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EXPORT_SYMBOL(drm_helper_encoder_in_use);
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/**
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* drm_helper_crtc_in_use - check if a given CRTC is in a mode_config
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* @crtc: CRTC to check
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*
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* LOCKING:
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* Caller must hold mode config lock.
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*
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* Walk @crtc's DRM device's mode_config and see if it's in use.
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*
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* RETURNS:
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* True if @crtc is part of the mode_config, false otherwise.
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*/
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bool drm_helper_crtc_in_use(struct drm_crtc *crtc)
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{
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struct drm_encoder *encoder;
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struct drm_device *dev = crtc->dev;
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/* FIXME: Locking around list access? */
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
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if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder))
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return true;
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return false;
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}
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EXPORT_SYMBOL(drm_helper_crtc_in_use);
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static void
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drm_encoder_disable(struct drm_encoder *encoder)
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{
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struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
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if (encoder_funcs->disable)
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(*encoder_funcs->disable)(encoder);
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else
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(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
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}
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/**
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* drm_helper_disable_unused_functions - disable unused objects
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* @dev: DRM device
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*
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* LOCKING:
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* Caller must hold mode config lock.
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*
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* If an connector or CRTC isn't part of @dev's mode_config, it can be disabled
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* by calling its dpms function, which should power it off.
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*/
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void drm_helper_disable_unused_functions(struct drm_device *dev)
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{
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struct drm_encoder *encoder;
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struct drm_connector *connector;
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struct drm_crtc *crtc;
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list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
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if (!connector->encoder)
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continue;
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if (connector->status == connector_status_disconnected)
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connector->encoder = NULL;
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}
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
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if (!drm_helper_encoder_in_use(encoder)) {
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drm_encoder_disable(encoder);
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/* disconnector encoder from any connector */
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encoder->crtc = NULL;
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}
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}
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list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
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struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
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crtc->enabled = drm_helper_crtc_in_use(crtc);
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if (!crtc->enabled) {
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if (crtc_funcs->disable)
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(*crtc_funcs->disable)(crtc);
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else
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(*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF);
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crtc->fb = NULL;
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}
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}
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}
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EXPORT_SYMBOL(drm_helper_disable_unused_functions);
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/**
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* drm_encoder_crtc_ok - can a given crtc drive a given encoder?
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* @encoder: encoder to test
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* @crtc: crtc to test
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*
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* Return false if @encoder can't be driven by @crtc, true otherwise.
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*/
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static bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
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struct drm_crtc *crtc)
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{
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struct drm_device *dev;
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struct drm_crtc *tmp;
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int crtc_mask = 1;
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WARN(!crtc, "checking null crtc?\n");
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dev = crtc->dev;
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list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) {
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if (tmp == crtc)
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break;
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crtc_mask <<= 1;
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}
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if (encoder->possible_crtcs & crtc_mask)
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return true;
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return false;
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}
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/*
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* Check the CRTC we're going to map each output to vs. its current
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* CRTC. If they don't match, we have to disable the output and the CRTC
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* since the driver will have to re-route things.
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*/
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static void
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drm_crtc_prepare_encoders(struct drm_device *dev)
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{
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struct drm_encoder_helper_funcs *encoder_funcs;
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struct drm_encoder *encoder;
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
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encoder_funcs = encoder->helper_private;
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/* Disable unused encoders */
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if (encoder->crtc == NULL)
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drm_encoder_disable(encoder);
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/* Disable encoders whose CRTC is about to change */
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if (encoder_funcs->get_crtc &&
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encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
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drm_encoder_disable(encoder);
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}
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}
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/**
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* drm_crtc_set_mode - set a mode
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* @crtc: CRTC to program
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* @mode: mode to use
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* @x: width of mode
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* @y: height of mode
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*
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* LOCKING:
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* Caller must hold mode config lock.
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*
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* Try to set @mode on @crtc. Give @crtc and its associated connectors a chance
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* to fixup or reject the mode prior to trying to set it.
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*
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* RETURNS:
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* True if the mode was set successfully, or false otherwise.
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*/
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bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
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struct drm_display_mode *mode,
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int x, int y,
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struct drm_framebuffer *old_fb)
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{
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struct drm_device *dev = crtc->dev;
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struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode;
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struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
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struct drm_encoder_helper_funcs *encoder_funcs;
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int saved_x, saved_y;
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struct drm_encoder *encoder;
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bool ret = true;
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crtc->enabled = drm_helper_crtc_in_use(crtc);
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if (!crtc->enabled)
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return true;
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adjusted_mode = drm_mode_duplicate(dev, mode);
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if (!adjusted_mode)
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return false;
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saved_hwmode = crtc->hwmode;
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saved_mode = crtc->mode;
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saved_x = crtc->x;
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saved_y = crtc->y;
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/* Update crtc values up front so the driver can rely on them for mode
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* setting.
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*/
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crtc->mode = *mode;
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crtc->x = x;
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crtc->y = y;
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/* Pass our mode to the connectors and the CRTC to give them a chance to
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* adjust it according to limitations or connector properties, and also
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* a chance to reject the mode entirely.
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*/
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
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if (encoder->crtc != crtc)
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continue;
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encoder_funcs = encoder->helper_private;
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if (!(ret = encoder_funcs->mode_fixup(encoder, mode,
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adjusted_mode))) {
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DRM_DEBUG_KMS("Encoder fixup failed\n");
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goto done;
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}
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}
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if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) {
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DRM_DEBUG_KMS("CRTC fixup failed\n");
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goto done;
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}
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DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
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|
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/* Prepare the encoders and CRTCs before setting the mode. */
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
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if (encoder->crtc != crtc)
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continue;
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encoder_funcs = encoder->helper_private;
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/* Disable the encoders as the first thing we do. */
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encoder_funcs->prepare(encoder);
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}
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drm_crtc_prepare_encoders(dev);
|
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|
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crtc_funcs->prepare(crtc);
|
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|
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/* Set up the DPLL and any encoders state that needs to adjust or depend
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* on the DPLL.
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*/
|
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ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
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if (!ret)
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goto done;
|
|
|
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
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if (encoder->crtc != crtc)
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continue;
|
|
|
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DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n",
|
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encoder->base.id, drm_get_encoder_name(encoder),
|
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mode->base.id, mode->name);
|
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encoder_funcs = encoder->helper_private;
|
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encoder_funcs->mode_set(encoder, mode, adjusted_mode);
|
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}
|
|
|
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/* Now enable the clocks, plane, pipe, and connectors that we set up. */
|
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crtc_funcs->commit(crtc);
|
|
|
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list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
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if (encoder->crtc != crtc)
|
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continue;
|
|
|
|
encoder_funcs = encoder->helper_private;
|
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encoder_funcs->commit(encoder);
|
|
|
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}
|
|
|
|
/* Store real post-adjustment hardware mode. */
|
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crtc->hwmode = *adjusted_mode;
|
|
|
|
/* Calculate and store various constants which
|
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* are later needed by vblank and swap-completion
|
|
* timestamping. They are derived from true hwmode.
|
|
*/
|
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drm_calc_timestamping_constants(crtc);
|
|
|
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/* FIXME: add subpixel order */
|
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done:
|
|
drm_mode_destroy(dev, adjusted_mode);
|
|
if (!ret) {
|
|
crtc->hwmode = saved_hwmode;
|
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crtc->mode = saved_mode;
|
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crtc->x = saved_x;
|
|
crtc->y = saved_y;
|
|
}
|
|
|
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return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_helper_set_mode);
|
|
|
|
|
|
static int
|
|
drm_crtc_helper_disable(struct drm_crtc *crtc)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_connector *connector;
|
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struct drm_encoder *encoder;
|
|
|
|
/* Decouple all encoders and their attached connectors from this crtc */
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
if (encoder->crtc != crtc)
|
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continue;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
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if (connector->encoder != encoder)
|
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continue;
|
|
|
|
connector->encoder = NULL;
|
|
}
|
|
}
|
|
|
|
drm_helper_disable_unused_functions(dev);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_crtc_helper_set_config - set a new config from userspace
|
|
* @crtc: CRTC to setup
|
|
* @crtc_info: user provided configuration
|
|
* @new_mode: new mode to set
|
|
* @connector_set: set of connectors for the new config
|
|
* @fb: new framebuffer
|
|
*
|
|
* LOCKING:
|
|
* Caller must hold mode config lock.
|
|
*
|
|
* Setup a new configuration, provided by the user in @crtc_info, and enable
|
|
* it.
|
|
*
|
|
* RETURNS:
|
|
* Zero. (FIXME)
|
|
*/
|
|
int drm_crtc_helper_set_config(struct drm_mode_set *set)
|
|
{
|
|
struct drm_device *dev;
|
|
struct drm_crtc *save_crtcs, *new_crtc, *crtc;
|
|
struct drm_encoder *save_encoders, *new_encoder, *encoder;
|
|
struct drm_framebuffer *old_fb = NULL;
|
|
bool mode_changed = false; /* if true do a full mode set */
|
|
bool fb_changed = false; /* if true and !mode_changed just do a flip */
|
|
struct drm_connector *save_connectors, *connector;
|
|
int count = 0, ro, fail = 0;
|
|
struct drm_crtc_helper_funcs *crtc_funcs;
|
|
struct drm_mode_set save_set;
|
|
int ret;
|
|
int i;
|
|
|
|
DRM_DEBUG_KMS("\n");
|
|
|
|
if (!set)
|
|
return -EINVAL;
|
|
|
|
if (!set->crtc)
|
|
return -EINVAL;
|
|
|
|
if (!set->crtc->helper_private)
|
|
return -EINVAL;
|
|
|
|
crtc_funcs = set->crtc->helper_private;
|
|
|
|
if (!set->mode)
|
|
set->fb = NULL;
|
|
|
|
if (set->fb) {
|
|
DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
|
|
set->crtc->base.id, set->fb->base.id,
|
|
(int)set->num_connectors, set->x, set->y);
|
|
} else {
|
|
DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id);
|
|
return drm_crtc_helper_disable(set->crtc);
|
|
}
|
|
|
|
dev = set->crtc->dev;
|
|
|
|
/* Allocate space for the backup of all (non-pointer) crtc, encoder and
|
|
* connector data. */
|
|
save_crtcs = kzalloc(dev->mode_config.num_crtc *
|
|
sizeof(struct drm_crtc), GFP_KERNEL);
|
|
if (!save_crtcs)
|
|
return -ENOMEM;
|
|
|
|
save_encoders = kzalloc(dev->mode_config.num_encoder *
|
|
sizeof(struct drm_encoder), GFP_KERNEL);
|
|
if (!save_encoders) {
|
|
kfree(save_crtcs);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
save_connectors = kzalloc(dev->mode_config.num_connector *
|
|
sizeof(struct drm_connector), GFP_KERNEL);
|
|
if (!save_connectors) {
|
|
kfree(save_crtcs);
|
|
kfree(save_encoders);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Copy data. Note that driver private data is not affected.
|
|
* Should anything bad happen only the expected state is
|
|
* restored, not the drivers personal bookkeeping.
|
|
*/
|
|
count = 0;
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
save_crtcs[count++] = *crtc;
|
|
}
|
|
|
|
count = 0;
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
save_encoders[count++] = *encoder;
|
|
}
|
|
|
|
count = 0;
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
save_connectors[count++] = *connector;
|
|
}
|
|
|
|
save_set.crtc = set->crtc;
|
|
save_set.mode = &set->crtc->mode;
|
|
save_set.x = set->crtc->x;
|
|
save_set.y = set->crtc->y;
|
|
save_set.fb = set->crtc->fb;
|
|
|
|
/* We should be able to check here if the fb has the same properties
|
|
* and then just flip_or_move it */
|
|
if (set->crtc->fb != set->fb) {
|
|
/* If we have no fb then treat it as a full mode set */
|
|
if (set->crtc->fb == NULL) {
|
|
DRM_DEBUG_KMS("crtc has no fb, full mode set\n");
|
|
mode_changed = true;
|
|
} else if (set->fb == NULL) {
|
|
mode_changed = true;
|
|
} else if (set->fb->depth != set->crtc->fb->depth) {
|
|
mode_changed = true;
|
|
} else if (set->fb->bits_per_pixel !=
|
|
set->crtc->fb->bits_per_pixel) {
|
|
mode_changed = true;
|
|
} else
|
|
fb_changed = true;
|
|
}
|
|
|
|
if (set->x != set->crtc->x || set->y != set->crtc->y)
|
|
fb_changed = true;
|
|
|
|
if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
|
|
DRM_DEBUG_KMS("modes are different, full mode set\n");
|
|
drm_mode_debug_printmodeline(&set->crtc->mode);
|
|
drm_mode_debug_printmodeline(set->mode);
|
|
mode_changed = true;
|
|
}
|
|
|
|
/* a) traverse passed in connector list and get encoders for them */
|
|
count = 0;
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
struct drm_connector_helper_funcs *connector_funcs =
|
|
connector->helper_private;
|
|
new_encoder = connector->encoder;
|
|
for (ro = 0; ro < set->num_connectors; ro++) {
|
|
if (set->connectors[ro] == connector) {
|
|
new_encoder = connector_funcs->best_encoder(connector);
|
|
/* if we can't get an encoder for a connector
|
|
we are setting now - then fail */
|
|
if (new_encoder == NULL)
|
|
/* don't break so fail path works correct */
|
|
fail = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (new_encoder != connector->encoder) {
|
|
DRM_DEBUG_KMS("encoder changed, full mode switch\n");
|
|
mode_changed = true;
|
|
/* If the encoder is reused for another connector, then
|
|
* the appropriate crtc will be set later.
|
|
*/
|
|
if (connector->encoder)
|
|
connector->encoder->crtc = NULL;
|
|
connector->encoder = new_encoder;
|
|
}
|
|
}
|
|
|
|
if (fail) {
|
|
ret = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
count = 0;
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
if (!connector->encoder)
|
|
continue;
|
|
|
|
if (connector->encoder->crtc == set->crtc)
|
|
new_crtc = NULL;
|
|
else
|
|
new_crtc = connector->encoder->crtc;
|
|
|
|
for (ro = 0; ro < set->num_connectors; ro++) {
|
|
if (set->connectors[ro] == connector)
|
|
new_crtc = set->crtc;
|
|
}
|
|
|
|
/* Make sure the new CRTC will work with the encoder */
|
|
if (new_crtc &&
|
|
!drm_encoder_crtc_ok(connector->encoder, new_crtc)) {
|
|
ret = -EINVAL;
|
|
goto fail;
|
|
}
|
|
if (new_crtc != connector->encoder->crtc) {
|
|
DRM_DEBUG_KMS("crtc changed, full mode switch\n");
|
|
mode_changed = true;
|
|
connector->encoder->crtc = new_crtc;
|
|
}
|
|
if (new_crtc) {
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n",
|
|
connector->base.id, drm_get_connector_name(connector),
|
|
new_crtc->base.id);
|
|
} else {
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n",
|
|
connector->base.id, drm_get_connector_name(connector));
|
|
}
|
|
}
|
|
|
|
/* mode_set_base is not a required function */
|
|
if (fb_changed && !crtc_funcs->mode_set_base)
|
|
mode_changed = true;
|
|
|
|
if (mode_changed) {
|
|
set->crtc->enabled = drm_helper_crtc_in_use(set->crtc);
|
|
if (set->crtc->enabled) {
|
|
DRM_DEBUG_KMS("attempting to set mode from"
|
|
" userspace\n");
|
|
drm_mode_debug_printmodeline(set->mode);
|
|
old_fb = set->crtc->fb;
|
|
set->crtc->fb = set->fb;
|
|
if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
|
|
set->x, set->y,
|
|
old_fb)) {
|
|
DRM_ERROR("failed to set mode on [CRTC:%d]\n",
|
|
set->crtc->base.id);
|
|
set->crtc->fb = old_fb;
|
|
ret = -EINVAL;
|
|
goto fail;
|
|
}
|
|
DRM_DEBUG_KMS("Setting connector DPMS state to on\n");
|
|
for (i = 0; i < set->num_connectors; i++) {
|
|
DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id,
|
|
drm_get_connector_name(set->connectors[i]));
|
|
set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON);
|
|
}
|
|
}
|
|
drm_helper_disable_unused_functions(dev);
|
|
} else if (fb_changed) {
|
|
set->crtc->x = set->x;
|
|
set->crtc->y = set->y;
|
|
|
|
old_fb = set->crtc->fb;
|
|
if (set->crtc->fb != set->fb)
|
|
set->crtc->fb = set->fb;
|
|
ret = crtc_funcs->mode_set_base(set->crtc,
|
|
set->x, set->y, old_fb);
|
|
if (ret != 0) {
|
|
set->crtc->fb = old_fb;
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
kfree(save_connectors);
|
|
kfree(save_encoders);
|
|
kfree(save_crtcs);
|
|
return 0;
|
|
|
|
fail:
|
|
/* Restore all previous data. */
|
|
count = 0;
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
*crtc = save_crtcs[count++];
|
|
}
|
|
|
|
count = 0;
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
*encoder = save_encoders[count++];
|
|
}
|
|
|
|
count = 0;
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
*connector = save_connectors[count++];
|
|
}
|
|
|
|
/* Try to restore the config */
|
|
if (mode_changed &&
|
|
!drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x,
|
|
save_set.y, save_set.fb))
|
|
DRM_ERROR("failed to restore config after modeset failure\n");
|
|
|
|
kfree(save_connectors);
|
|
kfree(save_encoders);
|
|
kfree(save_crtcs);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_crtc_helper_set_config);
|
|
|
|
static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder)
|
|
{
|
|
int dpms = DRM_MODE_DPMS_OFF;
|
|
struct drm_connector *connector;
|
|
struct drm_device *dev = encoder->dev;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head)
|
|
if (connector->encoder == encoder)
|
|
if (connector->dpms < dpms)
|
|
dpms = connector->dpms;
|
|
return dpms;
|
|
}
|
|
|
|
static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc)
|
|
{
|
|
int dpms = DRM_MODE_DPMS_OFF;
|
|
struct drm_connector *connector;
|
|
struct drm_device *dev = crtc->dev;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head)
|
|
if (connector->encoder && connector->encoder->crtc == crtc)
|
|
if (connector->dpms < dpms)
|
|
dpms = connector->dpms;
|
|
return dpms;
|
|
}
|
|
|
|
/**
|
|
* drm_helper_connector_dpms
|
|
* @connector affected connector
|
|
* @mode DPMS mode
|
|
*
|
|
* Calls the low-level connector DPMS function, then
|
|
* calls appropriate encoder and crtc DPMS functions as well
|
|
*/
|
|
void drm_helper_connector_dpms(struct drm_connector *connector, int mode)
|
|
{
|
|
struct drm_encoder *encoder = connector->encoder;
|
|
struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
|
|
int old_dpms;
|
|
|
|
if (mode == connector->dpms)
|
|
return;
|
|
|
|
old_dpms = connector->dpms;
|
|
connector->dpms = mode;
|
|
|
|
/* from off to on, do crtc then encoder */
|
|
if (mode < old_dpms) {
|
|
if (crtc) {
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
if (crtc_funcs->dpms)
|
|
(*crtc_funcs->dpms) (crtc,
|
|
drm_helper_choose_crtc_dpms(crtc));
|
|
}
|
|
if (encoder) {
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
if (encoder_funcs->dpms)
|
|
(*encoder_funcs->dpms) (encoder,
|
|
drm_helper_choose_encoder_dpms(encoder));
|
|
}
|
|
}
|
|
|
|
/* from on to off, do encoder then crtc */
|
|
if (mode > old_dpms) {
|
|
if (encoder) {
|
|
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
|
|
if (encoder_funcs->dpms)
|
|
(*encoder_funcs->dpms) (encoder,
|
|
drm_helper_choose_encoder_dpms(encoder));
|
|
}
|
|
if (crtc) {
|
|
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
|
|
if (crtc_funcs->dpms)
|
|
(*crtc_funcs->dpms) (crtc,
|
|
drm_helper_choose_crtc_dpms(crtc));
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
EXPORT_SYMBOL(drm_helper_connector_dpms);
|
|
|
|
int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
|
|
struct drm_mode_fb_cmd2 *mode_cmd)
|
|
{
|
|
int i;
|
|
|
|
fb->width = mode_cmd->width;
|
|
fb->height = mode_cmd->height;
|
|
for (i = 0; i < 4; i++) {
|
|
fb->pitches[i] = mode_cmd->pitches[i];
|
|
fb->offsets[i] = mode_cmd->offsets[i];
|
|
}
|
|
drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth,
|
|
&fb->bits_per_pixel);
|
|
fb->pixel_format = mode_cmd->pixel_format;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct);
|
|
|
|
int drm_helper_resume_force_mode(struct drm_device *dev)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
struct drm_encoder *encoder;
|
|
struct drm_encoder_helper_funcs *encoder_funcs;
|
|
struct drm_crtc_helper_funcs *crtc_funcs;
|
|
int ret;
|
|
|
|
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
|
|
|
|
if (!crtc->enabled)
|
|
continue;
|
|
|
|
ret = drm_crtc_helper_set_mode(crtc, &crtc->mode,
|
|
crtc->x, crtc->y, crtc->fb);
|
|
|
|
if (ret == false)
|
|
DRM_ERROR("failed to set mode on crtc %p\n", crtc);
|
|
|
|
/* Turn off outputs that were already powered off */
|
|
if (drm_helper_choose_crtc_dpms(crtc)) {
|
|
list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
|
|
|
|
if(encoder->crtc != crtc)
|
|
continue;
|
|
|
|
encoder_funcs = encoder->helper_private;
|
|
if (encoder_funcs->dpms)
|
|
(*encoder_funcs->dpms) (encoder,
|
|
drm_helper_choose_encoder_dpms(encoder));
|
|
}
|
|
|
|
crtc_funcs = crtc->helper_private;
|
|
if (crtc_funcs->dpms)
|
|
(*crtc_funcs->dpms) (crtc,
|
|
drm_helper_choose_crtc_dpms(crtc));
|
|
}
|
|
}
|
|
/* disable the unused connectors while restoring the modesetting */
|
|
drm_helper_disable_unused_functions(dev);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_helper_resume_force_mode);
|
|
|
|
#define DRM_OUTPUT_POLL_PERIOD (10*HZ)
|
|
static void output_poll_execute(struct work_struct *work)
|
|
{
|
|
struct delayed_work *delayed_work = to_delayed_work(work);
|
|
struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work);
|
|
struct drm_connector *connector;
|
|
enum drm_connector_status old_status;
|
|
bool repoll = false, changed = false;
|
|
|
|
if (!drm_kms_helper_poll)
|
|
return;
|
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
|
|
/* if this is HPD or polled don't check it -
|
|
TV out for instance */
|
|
if (!connector->polled)
|
|
continue;
|
|
|
|
else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT))
|
|
repoll = true;
|
|
|
|
old_status = connector->status;
|
|
/* if we are connected and don't want to poll for disconnect
|
|
skip it */
|
|
if (old_status == connector_status_connected &&
|
|
!(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) &&
|
|
!(connector->polled & DRM_CONNECTOR_POLL_HPD))
|
|
continue;
|
|
|
|
connector->status = connector->funcs->detect(connector, false);
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n",
|
|
connector->base.id,
|
|
drm_get_connector_name(connector),
|
|
old_status, connector->status);
|
|
if (old_status != connector->status)
|
|
changed = true;
|
|
}
|
|
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
if (changed) {
|
|
/* send a uevent + call fbdev */
|
|
drm_sysfs_hotplug_event(dev);
|
|
if (dev->mode_config.funcs->output_poll_changed)
|
|
dev->mode_config.funcs->output_poll_changed(dev);
|
|
}
|
|
|
|
if (repoll)
|
|
queue_delayed_work(system_nrt_wq, delayed_work, DRM_OUTPUT_POLL_PERIOD);
|
|
}
|
|
|
|
void drm_kms_helper_poll_disable(struct drm_device *dev)
|
|
{
|
|
if (!dev->mode_config.poll_enabled)
|
|
return;
|
|
cancel_delayed_work_sync(&dev->mode_config.output_poll_work);
|
|
}
|
|
EXPORT_SYMBOL(drm_kms_helper_poll_disable);
|
|
|
|
void drm_kms_helper_poll_enable(struct drm_device *dev)
|
|
{
|
|
bool poll = false;
|
|
struct drm_connector *connector;
|
|
|
|
if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll)
|
|
return;
|
|
|
|
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
|
|
if (connector->polled)
|
|
poll = true;
|
|
}
|
|
|
|
if (poll)
|
|
queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD);
|
|
}
|
|
EXPORT_SYMBOL(drm_kms_helper_poll_enable);
|
|
|
|
void drm_kms_helper_poll_init(struct drm_device *dev)
|
|
{
|
|
INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute);
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|
dev->mode_config.poll_enabled = true;
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|
|
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drm_kms_helper_poll_enable(dev);
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}
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EXPORT_SYMBOL(drm_kms_helper_poll_init);
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|
|
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void drm_kms_helper_poll_fini(struct drm_device *dev)
|
|
{
|
|
drm_kms_helper_poll_disable(dev);
|
|
}
|
|
EXPORT_SYMBOL(drm_kms_helper_poll_fini);
|
|
|
|
void drm_helper_hpd_irq_event(struct drm_device *dev)
|
|
{
|
|
if (!dev->mode_config.poll_enabled)
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|
return;
|
|
|
|
/* kill timer and schedule immediate execution, this doesn't block */
|
|
cancel_delayed_work(&dev->mode_config.output_poll_work);
|
|
if (drm_kms_helper_poll)
|
|
queue_delayed_work(system_nrt_wq, &dev->mode_config.output_poll_work, 0);
|
|
}
|
|
EXPORT_SYMBOL(drm_helper_hpd_irq_event);
|