3182 lines
105 KiB
C
3182 lines
105 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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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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#include <drm/drm_auth.h>
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#include <drm/drm_connector.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_file.h>
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#include <drm/drm_managed.h>
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#include <drm/drm_panel.h>
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#include <drm/drm_print.h>
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#include <drm/drm_privacy_screen_consumer.h>
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#include <drm/drm_sysfs.h>
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#include <drm/drm_utils.h>
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#include <linux/property.h>
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#include <linux/uaccess.h>
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#include <video/cmdline.h>
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#include "drm_crtc_internal.h"
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#include "drm_internal.h"
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/**
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* DOC: overview
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*
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* In DRM connectors are the general abstraction for display sinks, and include
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* also fixed panels or anything else that can display pixels in some form. As
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* opposed to all other KMS objects representing hardware (like CRTC, encoder or
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* plane abstractions) connectors can be hotplugged and unplugged at runtime.
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* Hence they are reference-counted using drm_connector_get() and
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* drm_connector_put().
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*
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* KMS driver must create, initialize, register and attach at a &struct
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* drm_connector for each such sink. The instance is created as other KMS
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* objects and initialized by setting the following fields. The connector is
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* initialized with a call to drm_connector_init() with a pointer to the
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* &struct drm_connector_funcs and a connector type, and then exposed to
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* userspace with a call to drm_connector_register().
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*
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* Connectors must be attached to an encoder to be used. For devices that map
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* connectors to encoders 1:1, the connector should be attached at
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* initialization time with a call to drm_connector_attach_encoder(). The
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* driver must also set the &drm_connector.encoder field to point to the
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* attached encoder.
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*
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* For connectors which are not fixed (like built-in panels) the driver needs to
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* support hotplug notifications. The simplest way to do that is by using the
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* probe helpers, see drm_kms_helper_poll_init() for connectors which don't have
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* hardware support for hotplug interrupts. Connectors with hardware hotplug
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* support can instead use e.g. drm_helper_hpd_irq_event().
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*/
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/*
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* Global connector list for drm_connector_find_by_fwnode().
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* Note drm_connector_[un]register() first take connector->lock and then
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* take the connector_list_lock.
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*/
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static DEFINE_MUTEX(connector_list_lock);
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static LIST_HEAD(connector_list);
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struct drm_conn_prop_enum_list {
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int type;
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const char *name;
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struct ida ida;
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};
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/*
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* Connector and encoder types.
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*/
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static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
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{ DRM_MODE_CONNECTOR_Unknown, "Unknown" },
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{ DRM_MODE_CONNECTOR_VGA, "VGA" },
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{ DRM_MODE_CONNECTOR_DVII, "DVI-I" },
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{ DRM_MODE_CONNECTOR_DVID, "DVI-D" },
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{ DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
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{ DRM_MODE_CONNECTOR_Composite, "Composite" },
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{ DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
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{ DRM_MODE_CONNECTOR_LVDS, "LVDS" },
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{ DRM_MODE_CONNECTOR_Component, "Component" },
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{ DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
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{ DRM_MODE_CONNECTOR_DisplayPort, "DP" },
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{ DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
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{ DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
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{ DRM_MODE_CONNECTOR_TV, "TV" },
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{ DRM_MODE_CONNECTOR_eDP, "eDP" },
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{ DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
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{ DRM_MODE_CONNECTOR_DSI, "DSI" },
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{ DRM_MODE_CONNECTOR_DPI, "DPI" },
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{ DRM_MODE_CONNECTOR_WRITEBACK, "Writeback" },
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{ DRM_MODE_CONNECTOR_SPI, "SPI" },
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{ DRM_MODE_CONNECTOR_USB, "USB" },
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};
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void drm_connector_ida_init(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
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ida_init(&drm_connector_enum_list[i].ida);
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}
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void drm_connector_ida_destroy(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
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ida_destroy(&drm_connector_enum_list[i].ida);
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}
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/**
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* drm_get_connector_type_name - return a string for connector type
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* @type: The connector type (DRM_MODE_CONNECTOR_*)
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*
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* Returns: the name of the connector type, or NULL if the type is not valid.
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*/
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const char *drm_get_connector_type_name(unsigned int type)
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{
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if (type < ARRAY_SIZE(drm_connector_enum_list))
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return drm_connector_enum_list[type].name;
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return NULL;
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}
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EXPORT_SYMBOL(drm_get_connector_type_name);
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/**
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* drm_connector_get_cmdline_mode - reads the user's cmdline mode
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* @connector: connector to query
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*
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* The kernel supports per-connector configuration of its consoles through
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* use of the video= parameter. This function parses that option and
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* extracts the user's specified mode (or enable/disable status) for a
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* particular connector. This is typically only used during the early fbdev
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* setup.
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*/
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static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
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{
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struct drm_cmdline_mode *mode = &connector->cmdline_mode;
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const char *option;
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option = video_get_options(connector->name);
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if (!option)
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return;
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if (!drm_mode_parse_command_line_for_connector(option,
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connector,
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mode))
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return;
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if (mode->force) {
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DRM_INFO("forcing %s connector %s\n", connector->name,
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drm_get_connector_force_name(mode->force));
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connector->force = mode->force;
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}
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if (mode->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN) {
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DRM_INFO("cmdline forces connector %s panel_orientation to %d\n",
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connector->name, mode->panel_orientation);
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drm_connector_set_panel_orientation(connector,
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mode->panel_orientation);
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}
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DRM_DEBUG_KMS("cmdline mode for connector %s %s %dx%d@%dHz%s%s%s\n",
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connector->name, mode->name,
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mode->xres, mode->yres,
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mode->refresh_specified ? mode->refresh : 60,
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mode->rb ? " reduced blanking" : "",
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mode->margins ? " with margins" : "",
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mode->interlace ? " interlaced" : "");
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}
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static void drm_connector_free(struct kref *kref)
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{
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struct drm_connector *connector =
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container_of(kref, struct drm_connector, base.refcount);
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struct drm_device *dev = connector->dev;
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drm_mode_object_unregister(dev, &connector->base);
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connector->funcs->destroy(connector);
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}
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void drm_connector_free_work_fn(struct work_struct *work)
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{
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struct drm_connector *connector, *n;
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struct drm_device *dev =
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container_of(work, struct drm_device, mode_config.connector_free_work);
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struct drm_mode_config *config = &dev->mode_config;
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unsigned long flags;
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struct llist_node *freed;
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spin_lock_irqsave(&config->connector_list_lock, flags);
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freed = llist_del_all(&config->connector_free_list);
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spin_unlock_irqrestore(&config->connector_list_lock, flags);
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llist_for_each_entry_safe(connector, n, freed, free_node) {
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drm_mode_object_unregister(dev, &connector->base);
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connector->funcs->destroy(connector);
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}
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}
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static int __drm_connector_init(struct drm_device *dev,
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struct drm_connector *connector,
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const struct drm_connector_funcs *funcs,
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int connector_type,
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struct i2c_adapter *ddc)
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{
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struct drm_mode_config *config = &dev->mode_config;
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int ret;
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struct ida *connector_ida =
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&drm_connector_enum_list[connector_type].ida;
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WARN_ON(drm_drv_uses_atomic_modeset(dev) &&
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(!funcs->atomic_destroy_state ||
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!funcs->atomic_duplicate_state));
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ret = __drm_mode_object_add(dev, &connector->base,
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DRM_MODE_OBJECT_CONNECTOR,
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false, drm_connector_free);
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if (ret)
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return ret;
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connector->base.properties = &connector->properties;
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connector->dev = dev;
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connector->funcs = funcs;
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/* connector index is used with 32bit bitmasks */
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ret = ida_alloc_max(&config->connector_ida, 31, GFP_KERNEL);
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if (ret < 0) {
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DRM_DEBUG_KMS("Failed to allocate %s connector index: %d\n",
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drm_connector_enum_list[connector_type].name,
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ret);
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goto out_put;
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}
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connector->index = ret;
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ret = 0;
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connector->connector_type = connector_type;
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connector->connector_type_id =
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ida_alloc_min(connector_ida, 1, GFP_KERNEL);
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if (connector->connector_type_id < 0) {
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ret = connector->connector_type_id;
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goto out_put_id;
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}
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connector->name =
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kasprintf(GFP_KERNEL, "%s-%d",
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drm_connector_enum_list[connector_type].name,
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connector->connector_type_id);
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if (!connector->name) {
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ret = -ENOMEM;
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goto out_put_type_id;
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}
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/* provide ddc symlink in sysfs */
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connector->ddc = ddc;
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INIT_LIST_HEAD(&connector->global_connector_list_entry);
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INIT_LIST_HEAD(&connector->probed_modes);
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INIT_LIST_HEAD(&connector->modes);
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mutex_init(&connector->mutex);
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mutex_init(&connector->edid_override_mutex);
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connector->edid_blob_ptr = NULL;
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connector->epoch_counter = 0;
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connector->tile_blob_ptr = NULL;
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connector->status = connector_status_unknown;
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connector->display_info.panel_orientation =
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DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
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drm_connector_get_cmdline_mode(connector);
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/* We should add connectors at the end to avoid upsetting the connector
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* index too much.
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*/
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spin_lock_irq(&config->connector_list_lock);
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list_add_tail(&connector->head, &config->connector_list);
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config->num_connector++;
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spin_unlock_irq(&config->connector_list_lock);
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if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL &&
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connector_type != DRM_MODE_CONNECTOR_WRITEBACK)
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drm_connector_attach_edid_property(connector);
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drm_object_attach_property(&connector->base,
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config->dpms_property, 0);
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drm_object_attach_property(&connector->base,
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config->link_status_property,
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0);
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drm_object_attach_property(&connector->base,
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config->non_desktop_property,
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0);
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drm_object_attach_property(&connector->base,
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config->tile_property,
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0);
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if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
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drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
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}
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connector->debugfs_entry = NULL;
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out_put_type_id:
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if (ret)
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ida_free(connector_ida, connector->connector_type_id);
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out_put_id:
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if (ret)
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ida_free(&config->connector_ida, connector->index);
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out_put:
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if (ret)
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drm_mode_object_unregister(dev, &connector->base);
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return ret;
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}
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/**
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* drm_connector_init - Init a preallocated connector
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* @dev: DRM device
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* @connector: the connector to init
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* @funcs: callbacks for this connector
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* @connector_type: user visible type of the connector
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*
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* Initialises a preallocated connector. Connectors should be
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* subclassed as part of driver connector objects.
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*
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* At driver unload time the driver's &drm_connector_funcs.destroy hook
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* should call drm_connector_cleanup() and free the connector structure.
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* The connector structure should not be allocated with devm_kzalloc().
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*
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* Note: consider using drmm_connector_init() instead of
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* drm_connector_init() to let the DRM managed resource infrastructure
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* take care of cleanup and deallocation.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_connector_init(struct drm_device *dev,
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struct drm_connector *connector,
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const struct drm_connector_funcs *funcs,
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int connector_type)
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{
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if (drm_WARN_ON(dev, !(funcs && funcs->destroy)))
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return -EINVAL;
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return __drm_connector_init(dev, connector, funcs, connector_type, NULL);
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}
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EXPORT_SYMBOL(drm_connector_init);
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/**
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* drm_connector_init_with_ddc - Init a preallocated connector
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* @dev: DRM device
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* @connector: the connector to init
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* @funcs: callbacks for this connector
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* @connector_type: user visible type of the connector
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* @ddc: pointer to the associated ddc adapter
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*
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* Initialises a preallocated connector. Connectors should be
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* subclassed as part of driver connector objects.
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*
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* At driver unload time the driver's &drm_connector_funcs.destroy hook
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* should call drm_connector_cleanup() and free the connector structure.
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* The connector structure should not be allocated with devm_kzalloc().
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*
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* Ensures that the ddc field of the connector is correctly set.
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*
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* Note: consider using drmm_connector_init() instead of
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* drm_connector_init_with_ddc() to let the DRM managed resource
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* infrastructure take care of cleanup and deallocation.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_connector_init_with_ddc(struct drm_device *dev,
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struct drm_connector *connector,
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const struct drm_connector_funcs *funcs,
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int connector_type,
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struct i2c_adapter *ddc)
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{
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if (drm_WARN_ON(dev, !(funcs && funcs->destroy)))
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return -EINVAL;
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return __drm_connector_init(dev, connector, funcs, connector_type, ddc);
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}
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EXPORT_SYMBOL(drm_connector_init_with_ddc);
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static void drm_connector_cleanup_action(struct drm_device *dev,
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void *ptr)
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{
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struct drm_connector *connector = ptr;
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drm_connector_cleanup(connector);
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}
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/**
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* drmm_connector_init - Init a preallocated connector
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* @dev: DRM device
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* @connector: the connector to init
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* @funcs: callbacks for this connector
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* @connector_type: user visible type of the connector
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* @ddc: optional pointer to the associated ddc adapter
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*
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* Initialises a preallocated connector. Connectors should be
|
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* subclassed as part of driver connector objects.
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*
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* Cleanup is automatically handled with a call to
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* drm_connector_cleanup() in a DRM-managed action.
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*
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* The connector structure should be allocated with drmm_kzalloc().
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drmm_connector_init(struct drm_device *dev,
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struct drm_connector *connector,
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const struct drm_connector_funcs *funcs,
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int connector_type,
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struct i2c_adapter *ddc)
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{
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int ret;
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if (drm_WARN_ON(dev, funcs && funcs->destroy))
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return -EINVAL;
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ret = __drm_connector_init(dev, connector, funcs, connector_type, ddc);
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if (ret)
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return ret;
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ret = drmm_add_action_or_reset(dev, drm_connector_cleanup_action,
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connector);
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if (ret)
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return ret;
|
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return 0;
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}
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EXPORT_SYMBOL(drmm_connector_init);
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|
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/**
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* drm_connector_attach_edid_property - attach edid property.
|
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* @connector: the connector
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*
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* Some connector types like DRM_MODE_CONNECTOR_VIRTUAL do not get a
|
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* edid property attached by default. This function can be used to
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* explicitly enable the edid property in these cases.
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*/
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void drm_connector_attach_edid_property(struct drm_connector *connector)
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{
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struct drm_mode_config *config = &connector->dev->mode_config;
|
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drm_object_attach_property(&connector->base,
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config->edid_property,
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0);
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}
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EXPORT_SYMBOL(drm_connector_attach_edid_property);
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|
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/**
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* drm_connector_attach_encoder - attach a connector to an encoder
|
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* @connector: connector to attach
|
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* @encoder: encoder to attach @connector to
|
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*
|
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* This function links up a connector to an encoder. Note that the routing
|
|
* restrictions between encoders and crtcs are exposed to userspace through the
|
|
* possible_clones and possible_crtcs bitmasks.
|
|
*
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* Returns:
|
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* Zero on success, negative errno on failure.
|
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*/
|
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int drm_connector_attach_encoder(struct drm_connector *connector,
|
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struct drm_encoder *encoder)
|
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{
|
|
/*
|
|
* In the past, drivers have attempted to model the static association
|
|
* of connector to encoder in simple connector/encoder devices using a
|
|
* direct assignment of connector->encoder = encoder. This connection
|
|
* is a logical one and the responsibility of the core, so drivers are
|
|
* expected not to mess with this.
|
|
*
|
|
* Note that the error return should've been enough here, but a large
|
|
* majority of drivers ignores the return value, so add in a big WARN
|
|
* to get people's attention.
|
|
*/
|
|
if (WARN_ON(connector->encoder))
|
|
return -EINVAL;
|
|
|
|
connector->possible_encoders |= drm_encoder_mask(encoder);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_encoder);
|
|
|
|
/**
|
|
* drm_connector_has_possible_encoder - check if the connector and encoder are
|
|
* associated with each other
|
|
* @connector: the connector
|
|
* @encoder: the encoder
|
|
*
|
|
* Returns:
|
|
* True if @encoder is one of the possible encoders for @connector.
|
|
*/
|
|
bool drm_connector_has_possible_encoder(struct drm_connector *connector,
|
|
struct drm_encoder *encoder)
|
|
{
|
|
return connector->possible_encoders & drm_encoder_mask(encoder);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_has_possible_encoder);
|
|
|
|
static void drm_mode_remove(struct drm_connector *connector,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
list_del(&mode->head);
|
|
drm_mode_destroy(connector->dev, mode);
|
|
}
|
|
|
|
/**
|
|
* drm_connector_cleanup - cleans up an initialised connector
|
|
* @connector: connector to cleanup
|
|
*
|
|
* Cleans up the connector but doesn't free the object.
|
|
*/
|
|
void drm_connector_cleanup(struct drm_connector *connector)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_display_mode *mode, *t;
|
|
|
|
/* The connector should have been removed from userspace long before
|
|
* it is finally destroyed.
|
|
*/
|
|
if (WARN_ON(connector->registration_state ==
|
|
DRM_CONNECTOR_REGISTERED))
|
|
drm_connector_unregister(connector);
|
|
|
|
if (connector->privacy_screen) {
|
|
drm_privacy_screen_put(connector->privacy_screen);
|
|
connector->privacy_screen = NULL;
|
|
}
|
|
|
|
if (connector->tile_group) {
|
|
drm_mode_put_tile_group(dev, connector->tile_group);
|
|
connector->tile_group = NULL;
|
|
}
|
|
|
|
list_for_each_entry_safe(mode, t, &connector->probed_modes, head)
|
|
drm_mode_remove(connector, mode);
|
|
|
|
list_for_each_entry_safe(mode, t, &connector->modes, head)
|
|
drm_mode_remove(connector, mode);
|
|
|
|
ida_free(&drm_connector_enum_list[connector->connector_type].ida,
|
|
connector->connector_type_id);
|
|
|
|
ida_free(&dev->mode_config.connector_ida, connector->index);
|
|
|
|
kfree(connector->display_info.bus_formats);
|
|
kfree(connector->display_info.vics);
|
|
drm_mode_object_unregister(dev, &connector->base);
|
|
kfree(connector->name);
|
|
connector->name = NULL;
|
|
fwnode_handle_put(connector->fwnode);
|
|
connector->fwnode = NULL;
|
|
spin_lock_irq(&dev->mode_config.connector_list_lock);
|
|
list_del(&connector->head);
|
|
dev->mode_config.num_connector--;
|
|
spin_unlock_irq(&dev->mode_config.connector_list_lock);
|
|
|
|
WARN_ON(connector->state && !connector->funcs->atomic_destroy_state);
|
|
if (connector->state && connector->funcs->atomic_destroy_state)
|
|
connector->funcs->atomic_destroy_state(connector,
|
|
connector->state);
|
|
|
|
mutex_destroy(&connector->mutex);
|
|
|
|
memset(connector, 0, sizeof(*connector));
|
|
|
|
if (dev->registered)
|
|
drm_sysfs_hotplug_event(dev);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_cleanup);
|
|
|
|
/**
|
|
* drm_connector_register - register a connector
|
|
* @connector: the connector to register
|
|
*
|
|
* Register userspace interfaces for a connector. Only call this for connectors
|
|
* which can be hotplugged after drm_dev_register() has been called already,
|
|
* e.g. DP MST connectors. All other connectors will be registered automatically
|
|
* when calling drm_dev_register().
|
|
*
|
|
* When the connector is no longer available, callers must call
|
|
* drm_connector_unregister().
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_connector_register(struct drm_connector *connector)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (!connector->dev->registered)
|
|
return 0;
|
|
|
|
mutex_lock(&connector->mutex);
|
|
if (connector->registration_state != DRM_CONNECTOR_INITIALIZING)
|
|
goto unlock;
|
|
|
|
ret = drm_sysfs_connector_add(connector);
|
|
if (ret)
|
|
goto unlock;
|
|
|
|
drm_debugfs_connector_add(connector);
|
|
|
|
if (connector->funcs->late_register) {
|
|
ret = connector->funcs->late_register(connector);
|
|
if (ret)
|
|
goto err_debugfs;
|
|
}
|
|
|
|
drm_mode_object_register(connector->dev, &connector->base);
|
|
|
|
connector->registration_state = DRM_CONNECTOR_REGISTERED;
|
|
|
|
/* Let userspace know we have a new connector */
|
|
drm_sysfs_connector_hotplug_event(connector);
|
|
|
|
if (connector->privacy_screen)
|
|
drm_privacy_screen_register_notifier(connector->privacy_screen,
|
|
&connector->privacy_screen_notifier);
|
|
|
|
mutex_lock(&connector_list_lock);
|
|
list_add_tail(&connector->global_connector_list_entry, &connector_list);
|
|
mutex_unlock(&connector_list_lock);
|
|
goto unlock;
|
|
|
|
err_debugfs:
|
|
drm_debugfs_connector_remove(connector);
|
|
drm_sysfs_connector_remove(connector);
|
|
unlock:
|
|
mutex_unlock(&connector->mutex);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_register);
|
|
|
|
/**
|
|
* drm_connector_unregister - unregister a connector
|
|
* @connector: the connector to unregister
|
|
*
|
|
* Unregister userspace interfaces for a connector. Only call this for
|
|
* connectors which have been registered explicitly by calling
|
|
* drm_connector_register().
|
|
*/
|
|
void drm_connector_unregister(struct drm_connector *connector)
|
|
{
|
|
mutex_lock(&connector->mutex);
|
|
if (connector->registration_state != DRM_CONNECTOR_REGISTERED) {
|
|
mutex_unlock(&connector->mutex);
|
|
return;
|
|
}
|
|
|
|
mutex_lock(&connector_list_lock);
|
|
list_del_init(&connector->global_connector_list_entry);
|
|
mutex_unlock(&connector_list_lock);
|
|
|
|
if (connector->privacy_screen)
|
|
drm_privacy_screen_unregister_notifier(
|
|
connector->privacy_screen,
|
|
&connector->privacy_screen_notifier);
|
|
|
|
if (connector->funcs->early_unregister)
|
|
connector->funcs->early_unregister(connector);
|
|
|
|
drm_sysfs_connector_remove(connector);
|
|
drm_debugfs_connector_remove(connector);
|
|
|
|
connector->registration_state = DRM_CONNECTOR_UNREGISTERED;
|
|
mutex_unlock(&connector->mutex);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_unregister);
|
|
|
|
void drm_connector_unregister_all(struct drm_device *dev)
|
|
{
|
|
struct drm_connector *connector;
|
|
struct drm_connector_list_iter conn_iter;
|
|
|
|
drm_connector_list_iter_begin(dev, &conn_iter);
|
|
drm_for_each_connector_iter(connector, &conn_iter)
|
|
drm_connector_unregister(connector);
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
}
|
|
|
|
int drm_connector_register_all(struct drm_device *dev)
|
|
{
|
|
struct drm_connector *connector;
|
|
struct drm_connector_list_iter conn_iter;
|
|
int ret = 0;
|
|
|
|
drm_connector_list_iter_begin(dev, &conn_iter);
|
|
drm_for_each_connector_iter(connector, &conn_iter) {
|
|
ret = drm_connector_register(connector);
|
|
if (ret)
|
|
break;
|
|
}
|
|
drm_connector_list_iter_end(&conn_iter);
|
|
|
|
if (ret)
|
|
drm_connector_unregister_all(dev);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_get_connector_status_name - return a string for connector status
|
|
* @status: connector status to compute name of
|
|
*
|
|
* In contrast to the other drm_get_*_name functions this one here returns a
|
|
* const pointer and hence is threadsafe.
|
|
*
|
|
* Returns: connector status string
|
|
*/
|
|
const char *drm_get_connector_status_name(enum drm_connector_status status)
|
|
{
|
|
if (status == connector_status_connected)
|
|
return "connected";
|
|
else if (status == connector_status_disconnected)
|
|
return "disconnected";
|
|
else
|
|
return "unknown";
|
|
}
|
|
EXPORT_SYMBOL(drm_get_connector_status_name);
|
|
|
|
/**
|
|
* drm_get_connector_force_name - return a string for connector force
|
|
* @force: connector force to get name of
|
|
*
|
|
* Returns: const pointer to name.
|
|
*/
|
|
const char *drm_get_connector_force_name(enum drm_connector_force force)
|
|
{
|
|
switch (force) {
|
|
case DRM_FORCE_UNSPECIFIED:
|
|
return "unspecified";
|
|
case DRM_FORCE_OFF:
|
|
return "off";
|
|
case DRM_FORCE_ON:
|
|
return "on";
|
|
case DRM_FORCE_ON_DIGITAL:
|
|
return "digital";
|
|
default:
|
|
return "unknown";
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_LOCKDEP
|
|
static struct lockdep_map connector_list_iter_dep_map = {
|
|
.name = "drm_connector_list_iter"
|
|
};
|
|
#endif
|
|
|
|
/**
|
|
* drm_connector_list_iter_begin - initialize a connector_list iterator
|
|
* @dev: DRM device
|
|
* @iter: connector_list iterator
|
|
*
|
|
* Sets @iter up to walk the &drm_mode_config.connector_list of @dev. @iter
|
|
* must always be cleaned up again by calling drm_connector_list_iter_end().
|
|
* Iteration itself happens using drm_connector_list_iter_next() or
|
|
* drm_for_each_connector_iter().
|
|
*/
|
|
void drm_connector_list_iter_begin(struct drm_device *dev,
|
|
struct drm_connector_list_iter *iter)
|
|
{
|
|
iter->dev = dev;
|
|
iter->conn = NULL;
|
|
lock_acquire_shared_recursive(&connector_list_iter_dep_map, 0, 1, NULL, _RET_IP_);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_list_iter_begin);
|
|
|
|
/*
|
|
* Extra-safe connector put function that works in any context. Should only be
|
|
* used from the connector_iter functions, where we never really expect to
|
|
* actually release the connector when dropping our final reference.
|
|
*/
|
|
static void
|
|
__drm_connector_put_safe(struct drm_connector *conn)
|
|
{
|
|
struct drm_mode_config *config = &conn->dev->mode_config;
|
|
|
|
lockdep_assert_held(&config->connector_list_lock);
|
|
|
|
if (!refcount_dec_and_test(&conn->base.refcount.refcount))
|
|
return;
|
|
|
|
llist_add(&conn->free_node, &config->connector_free_list);
|
|
schedule_work(&config->connector_free_work);
|
|
}
|
|
|
|
/**
|
|
* drm_connector_list_iter_next - return next connector
|
|
* @iter: connector_list iterator
|
|
*
|
|
* Returns: the next connector for @iter, or NULL when the list walk has
|
|
* completed.
|
|
*/
|
|
struct drm_connector *
|
|
drm_connector_list_iter_next(struct drm_connector_list_iter *iter)
|
|
{
|
|
struct drm_connector *old_conn = iter->conn;
|
|
struct drm_mode_config *config = &iter->dev->mode_config;
|
|
struct list_head *lhead;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&config->connector_list_lock, flags);
|
|
lhead = old_conn ? &old_conn->head : &config->connector_list;
|
|
|
|
do {
|
|
if (lhead->next == &config->connector_list) {
|
|
iter->conn = NULL;
|
|
break;
|
|
}
|
|
|
|
lhead = lhead->next;
|
|
iter->conn = list_entry(lhead, struct drm_connector, head);
|
|
|
|
/* loop until it's not a zombie connector */
|
|
} while (!kref_get_unless_zero(&iter->conn->base.refcount));
|
|
|
|
if (old_conn)
|
|
__drm_connector_put_safe(old_conn);
|
|
spin_unlock_irqrestore(&config->connector_list_lock, flags);
|
|
|
|
return iter->conn;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_list_iter_next);
|
|
|
|
/**
|
|
* drm_connector_list_iter_end - tear down a connector_list iterator
|
|
* @iter: connector_list iterator
|
|
*
|
|
* Tears down @iter and releases any resources (like &drm_connector references)
|
|
* acquired while walking the list. This must always be called, both when the
|
|
* iteration completes fully or when it was aborted without walking the entire
|
|
* list.
|
|
*/
|
|
void drm_connector_list_iter_end(struct drm_connector_list_iter *iter)
|
|
{
|
|
struct drm_mode_config *config = &iter->dev->mode_config;
|
|
unsigned long flags;
|
|
|
|
iter->dev = NULL;
|
|
if (iter->conn) {
|
|
spin_lock_irqsave(&config->connector_list_lock, flags);
|
|
__drm_connector_put_safe(iter->conn);
|
|
spin_unlock_irqrestore(&config->connector_list_lock, flags);
|
|
}
|
|
lock_release(&connector_list_iter_dep_map, _RET_IP_);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_list_iter_end);
|
|
|
|
static const struct drm_prop_enum_list drm_subpixel_enum_list[] = {
|
|
{ SubPixelUnknown, "Unknown" },
|
|
{ SubPixelHorizontalRGB, "Horizontal RGB" },
|
|
{ SubPixelHorizontalBGR, "Horizontal BGR" },
|
|
{ SubPixelVerticalRGB, "Vertical RGB" },
|
|
{ SubPixelVerticalBGR, "Vertical BGR" },
|
|
{ SubPixelNone, "None" },
|
|
};
|
|
|
|
/**
|
|
* drm_get_subpixel_order_name - return a string for a given subpixel enum
|
|
* @order: enum of subpixel_order
|
|
*
|
|
* Note you could abuse this and return something out of bounds, but that
|
|
* would be a caller error. No unscrubbed user data should make it here.
|
|
*
|
|
* Returns: string describing an enumerated subpixel property
|
|
*/
|
|
const char *drm_get_subpixel_order_name(enum subpixel_order order)
|
|
{
|
|
return drm_subpixel_enum_list[order].name;
|
|
}
|
|
EXPORT_SYMBOL(drm_get_subpixel_order_name);
|
|
|
|
static const struct drm_prop_enum_list drm_dpms_enum_list[] = {
|
|
{ DRM_MODE_DPMS_ON, "On" },
|
|
{ DRM_MODE_DPMS_STANDBY, "Standby" },
|
|
{ DRM_MODE_DPMS_SUSPEND, "Suspend" },
|
|
{ DRM_MODE_DPMS_OFF, "Off" }
|
|
};
|
|
DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
|
|
|
|
static const struct drm_prop_enum_list drm_link_status_enum_list[] = {
|
|
{ DRM_MODE_LINK_STATUS_GOOD, "Good" },
|
|
{ DRM_MODE_LINK_STATUS_BAD, "Bad" },
|
|
};
|
|
|
|
/**
|
|
* drm_display_info_set_bus_formats - set the supported bus formats
|
|
* @info: display info to store bus formats in
|
|
* @formats: array containing the supported bus formats
|
|
* @num_formats: the number of entries in the fmts array
|
|
*
|
|
* Store the supported bus formats in display info structure.
|
|
* See MEDIA_BUS_FMT_* definitions in include/uapi/linux/media-bus-format.h for
|
|
* a full list of available formats.
|
|
*
|
|
* Returns:
|
|
* 0 on success or a negative error code on failure.
|
|
*/
|
|
int drm_display_info_set_bus_formats(struct drm_display_info *info,
|
|
const u32 *formats,
|
|
unsigned int num_formats)
|
|
{
|
|
u32 *fmts = NULL;
|
|
|
|
if (!formats && num_formats)
|
|
return -EINVAL;
|
|
|
|
if (formats && num_formats) {
|
|
fmts = kmemdup(formats, sizeof(*formats) * num_formats,
|
|
GFP_KERNEL);
|
|
if (!fmts)
|
|
return -ENOMEM;
|
|
}
|
|
|
|
kfree(info->bus_formats);
|
|
info->bus_formats = fmts;
|
|
info->num_bus_formats = num_formats;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_display_info_set_bus_formats);
|
|
|
|
/* Optional connector properties. */
|
|
static const struct drm_prop_enum_list drm_scaling_mode_enum_list[] = {
|
|
{ DRM_MODE_SCALE_NONE, "None" },
|
|
{ DRM_MODE_SCALE_FULLSCREEN, "Full" },
|
|
{ DRM_MODE_SCALE_CENTER, "Center" },
|
|
{ DRM_MODE_SCALE_ASPECT, "Full aspect" },
|
|
};
|
|
|
|
static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
|
|
{ DRM_MODE_PICTURE_ASPECT_NONE, "Automatic" },
|
|
{ DRM_MODE_PICTURE_ASPECT_4_3, "4:3" },
|
|
{ DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
|
|
};
|
|
|
|
static const struct drm_prop_enum_list drm_content_type_enum_list[] = {
|
|
{ DRM_MODE_CONTENT_TYPE_NO_DATA, "No Data" },
|
|
{ DRM_MODE_CONTENT_TYPE_GRAPHICS, "Graphics" },
|
|
{ DRM_MODE_CONTENT_TYPE_PHOTO, "Photo" },
|
|
{ DRM_MODE_CONTENT_TYPE_CINEMA, "Cinema" },
|
|
{ DRM_MODE_CONTENT_TYPE_GAME, "Game" },
|
|
};
|
|
|
|
static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = {
|
|
{ DRM_MODE_PANEL_ORIENTATION_NORMAL, "Normal" },
|
|
{ DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP, "Upside Down" },
|
|
{ DRM_MODE_PANEL_ORIENTATION_LEFT_UP, "Left Side Up" },
|
|
{ DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, "Right Side Up" },
|
|
};
|
|
|
|
static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
|
|
{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
|
|
{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
|
|
{ DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
|
|
};
|
|
DRM_ENUM_NAME_FN(drm_get_dvi_i_select_name, drm_dvi_i_select_enum_list)
|
|
|
|
static const struct drm_prop_enum_list drm_dvi_i_subconnector_enum_list[] = {
|
|
{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */
|
|
{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DVI-I */
|
|
{ DRM_MODE_SUBCONNECTOR_DVIA, "DVI-A" }, /* DVI-I */
|
|
};
|
|
DRM_ENUM_NAME_FN(drm_get_dvi_i_subconnector_name,
|
|
drm_dvi_i_subconnector_enum_list)
|
|
|
|
static const struct drm_prop_enum_list drm_tv_mode_enum_list[] = {
|
|
{ DRM_MODE_TV_MODE_NTSC, "NTSC" },
|
|
{ DRM_MODE_TV_MODE_NTSC_443, "NTSC-443" },
|
|
{ DRM_MODE_TV_MODE_NTSC_J, "NTSC-J" },
|
|
{ DRM_MODE_TV_MODE_PAL, "PAL" },
|
|
{ DRM_MODE_TV_MODE_PAL_M, "PAL-M" },
|
|
{ DRM_MODE_TV_MODE_PAL_N, "PAL-N" },
|
|
{ DRM_MODE_TV_MODE_SECAM, "SECAM" },
|
|
};
|
|
DRM_ENUM_NAME_FN(drm_get_tv_mode_name, drm_tv_mode_enum_list)
|
|
|
|
/**
|
|
* drm_get_tv_mode_from_name - Translates a TV mode name into its enum value
|
|
* @name: TV Mode name we want to convert
|
|
* @len: Length of @name
|
|
*
|
|
* Translates @name into an enum drm_connector_tv_mode.
|
|
*
|
|
* Returns: the enum value on success, a negative errno otherwise.
|
|
*/
|
|
int drm_get_tv_mode_from_name(const char *name, size_t len)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(drm_tv_mode_enum_list); i++) {
|
|
const struct drm_prop_enum_list *item = &drm_tv_mode_enum_list[i];
|
|
|
|
if (strlen(item->name) == len && !strncmp(item->name, name, len))
|
|
return item->type;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL(drm_get_tv_mode_from_name);
|
|
|
|
static const struct drm_prop_enum_list drm_tv_select_enum_list[] = {
|
|
{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
|
|
{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
|
|
{ DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
|
|
{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
|
|
{ DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
|
|
};
|
|
DRM_ENUM_NAME_FN(drm_get_tv_select_name, drm_tv_select_enum_list)
|
|
|
|
static const struct drm_prop_enum_list drm_tv_subconnector_enum_list[] = {
|
|
{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */
|
|
{ DRM_MODE_SUBCONNECTOR_Composite, "Composite" }, /* TV-out */
|
|
{ DRM_MODE_SUBCONNECTOR_SVIDEO, "SVIDEO" }, /* TV-out */
|
|
{ DRM_MODE_SUBCONNECTOR_Component, "Component" }, /* TV-out */
|
|
{ DRM_MODE_SUBCONNECTOR_SCART, "SCART" }, /* TV-out */
|
|
};
|
|
DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
|
|
drm_tv_subconnector_enum_list)
|
|
|
|
static const struct drm_prop_enum_list drm_dp_subconnector_enum_list[] = {
|
|
{ DRM_MODE_SUBCONNECTOR_Unknown, "Unknown" }, /* DVI-I, TV-out and DP */
|
|
{ DRM_MODE_SUBCONNECTOR_VGA, "VGA" }, /* DP */
|
|
{ DRM_MODE_SUBCONNECTOR_DVID, "DVI-D" }, /* DP */
|
|
{ DRM_MODE_SUBCONNECTOR_HDMIA, "HDMI" }, /* DP */
|
|
{ DRM_MODE_SUBCONNECTOR_DisplayPort, "DP" }, /* DP */
|
|
{ DRM_MODE_SUBCONNECTOR_Wireless, "Wireless" }, /* DP */
|
|
{ DRM_MODE_SUBCONNECTOR_Native, "Native" }, /* DP */
|
|
};
|
|
|
|
DRM_ENUM_NAME_FN(drm_get_dp_subconnector_name,
|
|
drm_dp_subconnector_enum_list)
|
|
|
|
|
|
static const char * const colorspace_names[] = {
|
|
/* For Default case, driver will set the colorspace */
|
|
[DRM_MODE_COLORIMETRY_DEFAULT] = "Default",
|
|
/* Standard Definition Colorimetry based on CEA 861 */
|
|
[DRM_MODE_COLORIMETRY_SMPTE_170M_YCC] = "SMPTE_170M_YCC",
|
|
[DRM_MODE_COLORIMETRY_BT709_YCC] = "BT709_YCC",
|
|
/* Standard Definition Colorimetry based on IEC 61966-2-4 */
|
|
[DRM_MODE_COLORIMETRY_XVYCC_601] = "XVYCC_601",
|
|
/* High Definition Colorimetry based on IEC 61966-2-4 */
|
|
[DRM_MODE_COLORIMETRY_XVYCC_709] = "XVYCC_709",
|
|
/* Colorimetry based on IEC 61966-2-1/Amendment 1 */
|
|
[DRM_MODE_COLORIMETRY_SYCC_601] = "SYCC_601",
|
|
/* Colorimetry based on IEC 61966-2-5 [33] */
|
|
[DRM_MODE_COLORIMETRY_OPYCC_601] = "opYCC_601",
|
|
/* Colorimetry based on IEC 61966-2-5 */
|
|
[DRM_MODE_COLORIMETRY_OPRGB] = "opRGB",
|
|
/* Colorimetry based on ITU-R BT.2020 */
|
|
[DRM_MODE_COLORIMETRY_BT2020_CYCC] = "BT2020_CYCC",
|
|
/* Colorimetry based on ITU-R BT.2020 */
|
|
[DRM_MODE_COLORIMETRY_BT2020_RGB] = "BT2020_RGB",
|
|
/* Colorimetry based on ITU-R BT.2020 */
|
|
[DRM_MODE_COLORIMETRY_BT2020_YCC] = "BT2020_YCC",
|
|
/* Added as part of Additional Colorimetry Extension in 861.G */
|
|
[DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65] = "DCI-P3_RGB_D65",
|
|
[DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER] = "DCI-P3_RGB_Theater",
|
|
[DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED] = "RGB_WIDE_FIXED",
|
|
/* Colorimetry based on scRGB (IEC 61966-2-2) */
|
|
[DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT] = "RGB_WIDE_FLOAT",
|
|
[DRM_MODE_COLORIMETRY_BT601_YCC] = "BT601_YCC",
|
|
};
|
|
|
|
/**
|
|
* drm_get_colorspace_name - return a string for color encoding
|
|
* @colorspace: color space to compute name of
|
|
*
|
|
* In contrast to the other drm_get_*_name functions this one here returns a
|
|
* const pointer and hence is threadsafe.
|
|
*/
|
|
const char *drm_get_colorspace_name(enum drm_colorspace colorspace)
|
|
{
|
|
if (colorspace < ARRAY_SIZE(colorspace_names) && colorspace_names[colorspace])
|
|
return colorspace_names[colorspace];
|
|
else
|
|
return "(null)";
|
|
}
|
|
|
|
static const u32 hdmi_colorspaces =
|
|
BIT(DRM_MODE_COLORIMETRY_SMPTE_170M_YCC) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT709_YCC) |
|
|
BIT(DRM_MODE_COLORIMETRY_XVYCC_601) |
|
|
BIT(DRM_MODE_COLORIMETRY_XVYCC_709) |
|
|
BIT(DRM_MODE_COLORIMETRY_SYCC_601) |
|
|
BIT(DRM_MODE_COLORIMETRY_OPYCC_601) |
|
|
BIT(DRM_MODE_COLORIMETRY_OPRGB) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT2020_CYCC) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT2020_RGB) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT2020_YCC) |
|
|
BIT(DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65) |
|
|
BIT(DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER);
|
|
|
|
/*
|
|
* As per DP 1.4a spec, 2.2.5.7.5 VSC SDP Payload for Pixel Encoding/Colorimetry
|
|
* Format Table 2-120
|
|
*/
|
|
static const u32 dp_colorspaces =
|
|
BIT(DRM_MODE_COLORIMETRY_RGB_WIDE_FIXED) |
|
|
BIT(DRM_MODE_COLORIMETRY_RGB_WIDE_FLOAT) |
|
|
BIT(DRM_MODE_COLORIMETRY_OPRGB) |
|
|
BIT(DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT2020_RGB) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT601_YCC) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT709_YCC) |
|
|
BIT(DRM_MODE_COLORIMETRY_XVYCC_601) |
|
|
BIT(DRM_MODE_COLORIMETRY_XVYCC_709) |
|
|
BIT(DRM_MODE_COLORIMETRY_SYCC_601) |
|
|
BIT(DRM_MODE_COLORIMETRY_OPYCC_601) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT2020_CYCC) |
|
|
BIT(DRM_MODE_COLORIMETRY_BT2020_YCC);
|
|
|
|
/**
|
|
* DOC: standard connector properties
|
|
*
|
|
* DRM connectors have a few standardized properties:
|
|
*
|
|
* EDID:
|
|
* Blob property which contains the current EDID read from the sink. This
|
|
* is useful to parse sink identification information like vendor, model
|
|
* and serial. Drivers should update this property by calling
|
|
* drm_connector_update_edid_property(), usually after having parsed
|
|
* the EDID using drm_add_edid_modes(). Userspace cannot change this
|
|
* property.
|
|
*
|
|
* User-space should not parse the EDID to obtain information exposed via
|
|
* other KMS properties (because the kernel might apply limits, quirks or
|
|
* fixups to the EDID). For instance, user-space should not try to parse
|
|
* mode lists from the EDID.
|
|
* DPMS:
|
|
* Legacy property for setting the power state of the connector. For atomic
|
|
* drivers this is only provided for backwards compatibility with existing
|
|
* drivers, it remaps to controlling the "ACTIVE" property on the CRTC the
|
|
* connector is linked to. Drivers should never set this property directly,
|
|
* it is handled by the DRM core by calling the &drm_connector_funcs.dpms
|
|
* callback. For atomic drivers the remapping to the "ACTIVE" property is
|
|
* implemented in the DRM core.
|
|
*
|
|
* Note that this property cannot be set through the MODE_ATOMIC ioctl,
|
|
* userspace must use "ACTIVE" on the CRTC instead.
|
|
*
|
|
* WARNING:
|
|
*
|
|
* For userspace also running on legacy drivers the "DPMS" semantics are a
|
|
* lot more complicated. First, userspace cannot rely on the "DPMS" value
|
|
* returned by the GETCONNECTOR actually reflecting reality, because many
|
|
* drivers fail to update it. For atomic drivers this is taken care of in
|
|
* drm_atomic_helper_update_legacy_modeset_state().
|
|
*
|
|
* The second issue is that the DPMS state is only well-defined when the
|
|
* connector is connected to a CRTC. In atomic the DRM core enforces that
|
|
* "ACTIVE" is off in such a case, no such checks exists for "DPMS".
|
|
*
|
|
* Finally, when enabling an output using the legacy SETCONFIG ioctl then
|
|
* "DPMS" is forced to ON. But see above, that might not be reflected in
|
|
* the software value on legacy drivers.
|
|
*
|
|
* Summarizing: Only set "DPMS" when the connector is known to be enabled,
|
|
* assume that a successful SETCONFIG call also sets "DPMS" to on, and
|
|
* never read back the value of "DPMS" because it can be incorrect.
|
|
* PATH:
|
|
* Connector path property to identify how this sink is physically
|
|
* connected. Used by DP MST. This should be set by calling
|
|
* drm_connector_set_path_property(), in the case of DP MST with the
|
|
* path property the MST manager created. Userspace cannot change this
|
|
* property.
|
|
* TILE:
|
|
* Connector tile group property to indicate how a set of DRM connector
|
|
* compose together into one logical screen. This is used by both high-res
|
|
* external screens (often only using a single cable, but exposing multiple
|
|
* DP MST sinks), or high-res integrated panels (like dual-link DSI) which
|
|
* are not gen-locked. Note that for tiled panels which are genlocked, like
|
|
* dual-link LVDS or dual-link DSI, the driver should try to not expose the
|
|
* tiling and virtualise both &drm_crtc and &drm_plane if needed. Drivers
|
|
* should update this value using drm_connector_set_tile_property().
|
|
* Userspace cannot change this property.
|
|
* link-status:
|
|
* Connector link-status property to indicate the status of link. The
|
|
* default value of link-status is "GOOD". If something fails during or
|
|
* after modeset, the kernel driver may set this to "BAD" and issue a
|
|
* hotplug uevent. Drivers should update this value using
|
|
* drm_connector_set_link_status_property().
|
|
*
|
|
* When user-space receives the hotplug uevent and detects a "BAD"
|
|
* link-status, the sink doesn't receive pixels anymore (e.g. the screen
|
|
* becomes completely black). The list of available modes may have
|
|
* changed. User-space is expected to pick a new mode if the current one
|
|
* has disappeared and perform a new modeset with link-status set to
|
|
* "GOOD" to re-enable the connector.
|
|
*
|
|
* If multiple connectors share the same CRTC and one of them gets a "BAD"
|
|
* link-status, the other are unaffected (ie. the sinks still continue to
|
|
* receive pixels).
|
|
*
|
|
* When user-space performs an atomic commit on a connector with a "BAD"
|
|
* link-status without resetting the property to "GOOD", the sink may
|
|
* still not receive pixels. When user-space performs an atomic commit
|
|
* which resets the link-status property to "GOOD" without the
|
|
* ALLOW_MODESET flag set, it might fail because a modeset is required.
|
|
*
|
|
* User-space can only change link-status to "GOOD", changing it to "BAD"
|
|
* is a no-op.
|
|
*
|
|
* For backwards compatibility with non-atomic userspace the kernel
|
|
* tries to automatically set the link-status back to "GOOD" in the
|
|
* SETCRTC IOCTL. This might fail if the mode is no longer valid, similar
|
|
* to how it might fail if a different screen has been connected in the
|
|
* interim.
|
|
* non_desktop:
|
|
* Indicates the output should be ignored for purposes of displaying a
|
|
* standard desktop environment or console. This is most likely because
|
|
* the output device is not rectilinear.
|
|
* Content Protection:
|
|
* This property is used by userspace to request the kernel protect future
|
|
* content communicated over the link. When requested, kernel will apply
|
|
* the appropriate means of protection (most often HDCP), and use the
|
|
* property to tell userspace the protection is active.
|
|
*
|
|
* Drivers can set this up by calling
|
|
* drm_connector_attach_content_protection_property() on initialization.
|
|
*
|
|
* The value of this property can be one of the following:
|
|
*
|
|
* DRM_MODE_CONTENT_PROTECTION_UNDESIRED = 0
|
|
* The link is not protected, content is transmitted in the clear.
|
|
* DRM_MODE_CONTENT_PROTECTION_DESIRED = 1
|
|
* Userspace has requested content protection, but the link is not
|
|
* currently protected. When in this state, kernel should enable
|
|
* Content Protection as soon as possible.
|
|
* DRM_MODE_CONTENT_PROTECTION_ENABLED = 2
|
|
* Userspace has requested content protection, and the link is
|
|
* protected. Only the driver can set the property to this value.
|
|
* If userspace attempts to set to ENABLED, kernel will return
|
|
* -EINVAL.
|
|
*
|
|
* A few guidelines:
|
|
*
|
|
* - DESIRED state should be preserved until userspace de-asserts it by
|
|
* setting the property to UNDESIRED. This means ENABLED should only
|
|
* transition to UNDESIRED when the user explicitly requests it.
|
|
* - If the state is DESIRED, kernel should attempt to re-authenticate the
|
|
* link whenever possible. This includes across disable/enable, dpms,
|
|
* hotplug, downstream device changes, link status failures, etc..
|
|
* - Kernel sends uevent with the connector id and property id through
|
|
* @drm_hdcp_update_content_protection, upon below kernel triggered
|
|
* scenarios:
|
|
*
|
|
* - DESIRED -> ENABLED (authentication success)
|
|
* - ENABLED -> DESIRED (termination of authentication)
|
|
* - Please note no uevents for userspace triggered property state changes,
|
|
* which can't fail such as
|
|
*
|
|
* - DESIRED/ENABLED -> UNDESIRED
|
|
* - UNDESIRED -> DESIRED
|
|
* - Userspace is responsible for polling the property or listen to uevents
|
|
* to determine when the value transitions from ENABLED to DESIRED.
|
|
* This signifies the link is no longer protected and userspace should
|
|
* take appropriate action (whatever that might be).
|
|
*
|
|
* HDCP Content Type:
|
|
* This Enum property is used by the userspace to declare the content type
|
|
* of the display stream, to kernel. Here display stream stands for any
|
|
* display content that userspace intended to display through HDCP
|
|
* encryption.
|
|
*
|
|
* Content Type of a stream is decided by the owner of the stream, as
|
|
* "HDCP Type0" or "HDCP Type1".
|
|
*
|
|
* The value of the property can be one of the below:
|
|
* - "HDCP Type0": DRM_MODE_HDCP_CONTENT_TYPE0 = 0
|
|
* - "HDCP Type1": DRM_MODE_HDCP_CONTENT_TYPE1 = 1
|
|
*
|
|
* When kernel starts the HDCP authentication (see "Content Protection"
|
|
* for details), it uses the content type in "HDCP Content Type"
|
|
* for performing the HDCP authentication with the display sink.
|
|
*
|
|
* Please note in HDCP spec versions, a link can be authenticated with
|
|
* HDCP 2.2 for Content Type 0/Content Type 1. Where as a link can be
|
|
* authenticated with HDCP1.4 only for Content Type 0(though it is implicit
|
|
* in nature. As there is no reference for Content Type in HDCP1.4).
|
|
*
|
|
* HDCP2.2 authentication protocol itself takes the "Content Type" as a
|
|
* parameter, which is a input for the DP HDCP2.2 encryption algo.
|
|
*
|
|
* In case of Type 0 content protection request, kernel driver can choose
|
|
* either of HDCP spec versions 1.4 and 2.2. When HDCP2.2 is used for
|
|
* "HDCP Type 0", a HDCP 2.2 capable repeater in the downstream can send
|
|
* that content to a HDCP 1.4 authenticated HDCP sink (Type0 link).
|
|
* But if the content is classified as "HDCP Type 1", above mentioned
|
|
* HDCP 2.2 repeater wont send the content to the HDCP sink as it can't
|
|
* authenticate the HDCP1.4 capable sink for "HDCP Type 1".
|
|
*
|
|
* Please note userspace can be ignorant of the HDCP versions used by the
|
|
* kernel driver to achieve the "HDCP Content Type".
|
|
*
|
|
* At current scenario, classifying a content as Type 1 ensures that the
|
|
* content will be displayed only through the HDCP2.2 encrypted link.
|
|
*
|
|
* Note that the HDCP Content Type property is introduced at HDCP 2.2, and
|
|
* defaults to type 0. It is only exposed by drivers supporting HDCP 2.2
|
|
* (hence supporting Type 0 and Type 1). Based on how next versions of
|
|
* HDCP specs are defined content Type could be used for higher versions
|
|
* too.
|
|
*
|
|
* If content type is changed when "Content Protection" is not UNDESIRED,
|
|
* then kernel will disable the HDCP and re-enable with new type in the
|
|
* same atomic commit. And when "Content Protection" is ENABLED, it means
|
|
* that link is HDCP authenticated and encrypted, for the transmission of
|
|
* the Type of stream mentioned at "HDCP Content Type".
|
|
*
|
|
* HDR_OUTPUT_METADATA:
|
|
* Connector property to enable userspace to send HDR Metadata to
|
|
* driver. This metadata is based on the composition and blending
|
|
* policies decided by user, taking into account the hardware and
|
|
* sink capabilities. The driver gets this metadata and creates a
|
|
* Dynamic Range and Mastering Infoframe (DRM) in case of HDMI,
|
|
* SDP packet (Non-audio INFOFRAME SDP v1.3) for DP. This is then
|
|
* sent to sink. This notifies the sink of the upcoming frame's Color
|
|
* Encoding and Luminance parameters.
|
|
*
|
|
* Userspace first need to detect the HDR capabilities of sink by
|
|
* reading and parsing the EDID. Details of HDR metadata for HDMI
|
|
* are added in CTA 861.G spec. For DP , its defined in VESA DP
|
|
* Standard v1.4. It needs to then get the metadata information
|
|
* of the video/game/app content which are encoded in HDR (basically
|
|
* using HDR transfer functions). With this information it needs to
|
|
* decide on a blending policy and compose the relevant
|
|
* layers/overlays into a common format. Once this blending is done,
|
|
* userspace will be aware of the metadata of the composed frame to
|
|
* be send to sink. It then uses this property to communicate this
|
|
* metadata to driver which then make a Infoframe packet and sends
|
|
* to sink based on the type of encoder connected.
|
|
*
|
|
* Userspace will be responsible to do Tone mapping operation in case:
|
|
* - Some layers are HDR and others are SDR
|
|
* - HDR layers luminance is not same as sink
|
|
*
|
|
* It will even need to do colorspace conversion and get all layers
|
|
* to one common colorspace for blending. It can use either GL, Media
|
|
* or display engine to get this done based on the capabilities of the
|
|
* associated hardware.
|
|
*
|
|
* Driver expects metadata to be put in &struct hdr_output_metadata
|
|
* structure from userspace. This is received as blob and stored in
|
|
* &drm_connector_state.hdr_output_metadata. It parses EDID and saves the
|
|
* sink metadata in &struct hdr_sink_metadata, as
|
|
* &drm_connector.hdr_sink_metadata. Driver uses
|
|
* drm_hdmi_infoframe_set_hdr_metadata() helper to set the HDR metadata,
|
|
* hdmi_drm_infoframe_pack() to pack the infoframe as per spec, in case of
|
|
* HDMI encoder.
|
|
*
|
|
* max bpc:
|
|
* This range property is used by userspace to limit the bit depth. When
|
|
* used the driver would limit the bpc in accordance with the valid range
|
|
* supported by the hardware and sink. Drivers to use the function
|
|
* drm_connector_attach_max_bpc_property() to create and attach the
|
|
* property to the connector during initialization.
|
|
*
|
|
* Connectors also have one standardized atomic property:
|
|
*
|
|
* CRTC_ID:
|
|
* Mode object ID of the &drm_crtc this connector should be connected to.
|
|
*
|
|
* Connectors for LCD panels may also have one standardized property:
|
|
*
|
|
* panel orientation:
|
|
* On some devices the LCD panel is mounted in the casing in such a way
|
|
* that the up/top side of the panel does not match with the top side of
|
|
* the device. Userspace can use this property to check for this.
|
|
* Note that input coordinates from touchscreens (input devices with
|
|
* INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel
|
|
* coordinates, so if userspace rotates the picture to adjust for
|
|
* the orientation it must also apply the same transformation to the
|
|
* touchscreen input coordinates. This property is initialized by calling
|
|
* drm_connector_set_panel_orientation() or
|
|
* drm_connector_set_panel_orientation_with_quirk()
|
|
*
|
|
* scaling mode:
|
|
* This property defines how a non-native mode is upscaled to the native
|
|
* mode of an LCD panel:
|
|
*
|
|
* None:
|
|
* No upscaling happens, scaling is left to the panel. Not all
|
|
* drivers expose this mode.
|
|
* Full:
|
|
* The output is upscaled to the full resolution of the panel,
|
|
* ignoring the aspect ratio.
|
|
* Center:
|
|
* No upscaling happens, the output is centered within the native
|
|
* resolution the panel.
|
|
* Full aspect:
|
|
* The output is upscaled to maximize either the width or height
|
|
* while retaining the aspect ratio.
|
|
*
|
|
* This property should be set up by calling
|
|
* drm_connector_attach_scaling_mode_property(). Note that drivers
|
|
* can also expose this property to external outputs, in which case they
|
|
* must support "None", which should be the default (since external screens
|
|
* have a built-in scaler).
|
|
*
|
|
* subconnector:
|
|
* This property is used by DVI-I, TVout and DisplayPort to indicate different
|
|
* connector subtypes. Enum values more or less match with those from main
|
|
* connector types.
|
|
* For DVI-I and TVout there is also a matching property "select subconnector"
|
|
* allowing to switch between signal types.
|
|
* DP subconnector corresponds to a downstream port.
|
|
*
|
|
* privacy-screen sw-state, privacy-screen hw-state:
|
|
* These 2 optional properties can be used to query the state of the
|
|
* electronic privacy screen that is available on some displays; and in
|
|
* some cases also control the state. If a driver implements these
|
|
* properties then both properties must be present.
|
|
*
|
|
* "privacy-screen hw-state" is read-only and reflects the actual state
|
|
* of the privacy-screen, possible values: "Enabled", "Disabled,
|
|
* "Enabled-locked", "Disabled-locked". The locked states indicate
|
|
* that the state cannot be changed through the DRM API. E.g. there
|
|
* might be devices where the firmware-setup options, or a hardware
|
|
* slider-switch, offer always on / off modes.
|
|
*
|
|
* "privacy-screen sw-state" can be set to change the privacy-screen state
|
|
* when not locked. In this case the driver must update the hw-state
|
|
* property to reflect the new state on completion of the commit of the
|
|
* sw-state property. Setting the sw-state property when the hw-state is
|
|
* locked must be interpreted by the driver as a request to change the
|
|
* state to the set state when the hw-state becomes unlocked. E.g. if
|
|
* "privacy-screen hw-state" is "Enabled-locked" and the sw-state
|
|
* gets set to "Disabled" followed by the user unlocking the state by
|
|
* changing the slider-switch position, then the driver must set the
|
|
* state to "Disabled" upon receiving the unlock event.
|
|
*
|
|
* In some cases the privacy-screen's actual state might change outside of
|
|
* control of the DRM code. E.g. there might be a firmware handled hotkey
|
|
* which toggles the actual state, or the actual state might be changed
|
|
* through another userspace API such as writing /proc/acpi/ibm/lcdshadow.
|
|
* In this case the driver must update both the hw-state and the sw-state
|
|
* to reflect the new value, overwriting any pending state requests in the
|
|
* sw-state. Any pending sw-state requests are thus discarded.
|
|
*
|
|
* Note that the ability for the state to change outside of control of
|
|
* the DRM master process means that userspace must not cache the value
|
|
* of the sw-state. Caching the sw-state value and including it in later
|
|
* atomic commits may lead to overriding a state change done through e.g.
|
|
* a firmware handled hotkey. Therefor userspace must not include the
|
|
* privacy-screen sw-state in an atomic commit unless it wants to change
|
|
* its value.
|
|
*
|
|
* left margin, right margin, top margin, bottom margin:
|
|
* Add margins to the connector's viewport. This is typically used to
|
|
* mitigate overscan on TVs.
|
|
*
|
|
* The value is the size in pixels of the black border which will be
|
|
* added. The attached CRTC's content will be scaled to fill the whole
|
|
* area inside the margin.
|
|
*
|
|
* The margins configuration might be sent to the sink, e.g. via HDMI AVI
|
|
* InfoFrames.
|
|
*
|
|
* Drivers can set up these properties by calling
|
|
* drm_mode_create_tv_margin_properties().
|
|
*/
|
|
|
|
int drm_connector_create_standard_properties(struct drm_device *dev)
|
|
{
|
|
struct drm_property *prop;
|
|
|
|
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB |
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"EDID", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.edid_property = prop;
|
|
|
|
prop = drm_property_create_enum(dev, 0,
|
|
"DPMS", drm_dpms_enum_list,
|
|
ARRAY_SIZE(drm_dpms_enum_list));
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.dpms_property = prop;
|
|
|
|
prop = drm_property_create(dev,
|
|
DRM_MODE_PROP_BLOB |
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"PATH", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.path_property = prop;
|
|
|
|
prop = drm_property_create(dev,
|
|
DRM_MODE_PROP_BLOB |
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"TILE", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.tile_property = prop;
|
|
|
|
prop = drm_property_create_enum(dev, 0, "link-status",
|
|
drm_link_status_enum_list,
|
|
ARRAY_SIZE(drm_link_status_enum_list));
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.link_status_property = prop;
|
|
|
|
prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE, "non-desktop");
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.non_desktop_property = prop;
|
|
|
|
prop = drm_property_create(dev, DRM_MODE_PROP_BLOB,
|
|
"HDR_OUTPUT_METADATA", 0);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
dev->mode_config.hdr_output_metadata_property = prop;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver the first time a DVI-I connector is made.
|
|
*
|
|
* Returns: %0
|
|
*/
|
|
int drm_mode_create_dvi_i_properties(struct drm_device *dev)
|
|
{
|
|
struct drm_property *dvi_i_selector;
|
|
struct drm_property *dvi_i_subconnector;
|
|
|
|
if (dev->mode_config.dvi_i_select_subconnector_property)
|
|
return 0;
|
|
|
|
dvi_i_selector =
|
|
drm_property_create_enum(dev, 0,
|
|
"select subconnector",
|
|
drm_dvi_i_select_enum_list,
|
|
ARRAY_SIZE(drm_dvi_i_select_enum_list));
|
|
dev->mode_config.dvi_i_select_subconnector_property = dvi_i_selector;
|
|
|
|
dvi_i_subconnector = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
|
|
"subconnector",
|
|
drm_dvi_i_subconnector_enum_list,
|
|
ARRAY_SIZE(drm_dvi_i_subconnector_enum_list));
|
|
dev->mode_config.dvi_i_subconnector_property = dvi_i_subconnector;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_dvi_i_properties);
|
|
|
|
/**
|
|
* drm_connector_attach_dp_subconnector_property - create subconnector property for DP
|
|
* @connector: drm_connector to attach property
|
|
*
|
|
* Called by a driver when DP connector is created.
|
|
*/
|
|
void drm_connector_attach_dp_subconnector_property(struct drm_connector *connector)
|
|
{
|
|
struct drm_mode_config *mode_config = &connector->dev->mode_config;
|
|
|
|
if (!mode_config->dp_subconnector_property)
|
|
mode_config->dp_subconnector_property =
|
|
drm_property_create_enum(connector->dev,
|
|
DRM_MODE_PROP_IMMUTABLE,
|
|
"subconnector",
|
|
drm_dp_subconnector_enum_list,
|
|
ARRAY_SIZE(drm_dp_subconnector_enum_list));
|
|
|
|
drm_object_attach_property(&connector->base,
|
|
mode_config->dp_subconnector_property,
|
|
DRM_MODE_SUBCONNECTOR_Unknown);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_dp_subconnector_property);
|
|
|
|
/**
|
|
* DOC: HDMI connector properties
|
|
*
|
|
* content type (HDMI specific):
|
|
* Indicates content type setting to be used in HDMI infoframes to indicate
|
|
* content type for the external device, so that it adjusts its display
|
|
* settings accordingly.
|
|
*
|
|
* The value of this property can be one of the following:
|
|
*
|
|
* No Data:
|
|
* Content type is unknown
|
|
* Graphics:
|
|
* Content type is graphics
|
|
* Photo:
|
|
* Content type is photo
|
|
* Cinema:
|
|
* Content type is cinema
|
|
* Game:
|
|
* Content type is game
|
|
*
|
|
* The meaning of each content type is defined in CTA-861-G table 15.
|
|
*
|
|
* Drivers can set up this property by calling
|
|
* drm_connector_attach_content_type_property(). Decoding to
|
|
* infoframe values is done through drm_hdmi_avi_infoframe_content_type().
|
|
*/
|
|
|
|
/*
|
|
* TODO: Document the properties:
|
|
* - brightness
|
|
* - contrast
|
|
* - flicker reduction
|
|
* - hue
|
|
* - mode
|
|
* - overscan
|
|
* - saturation
|
|
* - select subconnector
|
|
*/
|
|
/**
|
|
* DOC: Analog TV Connector Properties
|
|
*
|
|
* TV Mode:
|
|
* Indicates the TV Mode used on an analog TV connector. The value
|
|
* of this property can be one of the following:
|
|
*
|
|
* NTSC:
|
|
* TV Mode is CCIR System M (aka 525-lines) together with
|
|
* the NTSC Color Encoding.
|
|
*
|
|
* NTSC-443:
|
|
*
|
|
* TV Mode is CCIR System M (aka 525-lines) together with
|
|
* the NTSC Color Encoding, but with a color subcarrier
|
|
* frequency of 4.43MHz
|
|
*
|
|
* NTSC-J:
|
|
*
|
|
* TV Mode is CCIR System M (aka 525-lines) together with
|
|
* the NTSC Color Encoding, but with a black level equal to
|
|
* the blanking level.
|
|
*
|
|
* PAL:
|
|
*
|
|
* TV Mode is CCIR System B (aka 625-lines) together with
|
|
* the PAL Color Encoding.
|
|
*
|
|
* PAL-M:
|
|
*
|
|
* TV Mode is CCIR System M (aka 525-lines) together with
|
|
* the PAL Color Encoding.
|
|
*
|
|
* PAL-N:
|
|
*
|
|
* TV Mode is CCIR System N together with the PAL Color
|
|
* Encoding, a color subcarrier frequency of 3.58MHz, the
|
|
* SECAM color space, and narrower channels than other PAL
|
|
* variants.
|
|
*
|
|
* SECAM:
|
|
*
|
|
* TV Mode is CCIR System B (aka 625-lines) together with
|
|
* the SECAM Color Encoding.
|
|
*
|
|
* Drivers can set up this property by calling
|
|
* drm_mode_create_tv_properties().
|
|
*/
|
|
|
|
/**
|
|
* drm_connector_attach_content_type_property - attach content-type property
|
|
* @connector: connector to attach content type property on.
|
|
*
|
|
* Called by a driver the first time a HDMI connector is made.
|
|
*
|
|
* Returns: %0
|
|
*/
|
|
int drm_connector_attach_content_type_property(struct drm_connector *connector)
|
|
{
|
|
if (!drm_mode_create_content_type_property(connector->dev))
|
|
drm_object_attach_property(&connector->base,
|
|
connector->dev->mode_config.content_type_property,
|
|
DRM_MODE_CONTENT_TYPE_NO_DATA);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_content_type_property);
|
|
|
|
/**
|
|
* drm_connector_attach_tv_margin_properties - attach TV connector margin
|
|
* properties
|
|
* @connector: DRM connector
|
|
*
|
|
* Called by a driver when it needs to attach TV margin props to a connector.
|
|
* Typically used on SDTV and HDMI connectors.
|
|
*/
|
|
void drm_connector_attach_tv_margin_properties(struct drm_connector *connector)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
|
|
drm_object_attach_property(&connector->base,
|
|
dev->mode_config.tv_left_margin_property,
|
|
0);
|
|
drm_object_attach_property(&connector->base,
|
|
dev->mode_config.tv_right_margin_property,
|
|
0);
|
|
drm_object_attach_property(&connector->base,
|
|
dev->mode_config.tv_top_margin_property,
|
|
0);
|
|
drm_object_attach_property(&connector->base,
|
|
dev->mode_config.tv_bottom_margin_property,
|
|
0);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_tv_margin_properties);
|
|
|
|
/**
|
|
* drm_mode_create_tv_margin_properties - create TV connector margin properties
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver's HDMI connector initialization routine, this function
|
|
* creates the TV margin properties for a given device. No need to call this
|
|
* function for an SDTV connector, it's already called from
|
|
* drm_mode_create_tv_properties_legacy().
|
|
*
|
|
* Returns:
|
|
* 0 on success or a negative error code on failure.
|
|
*/
|
|
int drm_mode_create_tv_margin_properties(struct drm_device *dev)
|
|
{
|
|
if (dev->mode_config.tv_left_margin_property)
|
|
return 0;
|
|
|
|
dev->mode_config.tv_left_margin_property =
|
|
drm_property_create_range(dev, 0, "left margin", 0, 100);
|
|
if (!dev->mode_config.tv_left_margin_property)
|
|
return -ENOMEM;
|
|
|
|
dev->mode_config.tv_right_margin_property =
|
|
drm_property_create_range(dev, 0, "right margin", 0, 100);
|
|
if (!dev->mode_config.tv_right_margin_property)
|
|
return -ENOMEM;
|
|
|
|
dev->mode_config.tv_top_margin_property =
|
|
drm_property_create_range(dev, 0, "top margin", 0, 100);
|
|
if (!dev->mode_config.tv_top_margin_property)
|
|
return -ENOMEM;
|
|
|
|
dev->mode_config.tv_bottom_margin_property =
|
|
drm_property_create_range(dev, 0, "bottom margin", 0, 100);
|
|
if (!dev->mode_config.tv_bottom_margin_property)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_tv_margin_properties);
|
|
|
|
/**
|
|
* drm_mode_create_tv_properties_legacy - create TV specific connector properties
|
|
* @dev: DRM device
|
|
* @num_modes: number of different TV formats (modes) supported
|
|
* @modes: array of pointers to strings containing name of each format
|
|
*
|
|
* Called by a driver's TV initialization routine, this function creates
|
|
* the TV specific connector properties for a given device. Caller is
|
|
* responsible for allocating a list of format names and passing them to
|
|
* this routine.
|
|
*
|
|
* NOTE: This functions registers the deprecated "mode" connector
|
|
* property to select the analog TV mode (ie, NTSC, PAL, etc.). New
|
|
* drivers must use drm_mode_create_tv_properties() instead.
|
|
*
|
|
* Returns:
|
|
* 0 on success or a negative error code on failure.
|
|
*/
|
|
int drm_mode_create_tv_properties_legacy(struct drm_device *dev,
|
|
unsigned int num_modes,
|
|
const char * const modes[])
|
|
{
|
|
struct drm_property *tv_selector;
|
|
struct drm_property *tv_subconnector;
|
|
unsigned int i;
|
|
|
|
if (dev->mode_config.tv_select_subconnector_property)
|
|
return 0;
|
|
|
|
/*
|
|
* Basic connector properties
|
|
*/
|
|
tv_selector = drm_property_create_enum(dev, 0,
|
|
"select subconnector",
|
|
drm_tv_select_enum_list,
|
|
ARRAY_SIZE(drm_tv_select_enum_list));
|
|
if (!tv_selector)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_select_subconnector_property = tv_selector;
|
|
|
|
tv_subconnector =
|
|
drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
|
|
"subconnector",
|
|
drm_tv_subconnector_enum_list,
|
|
ARRAY_SIZE(drm_tv_subconnector_enum_list));
|
|
if (!tv_subconnector)
|
|
goto nomem;
|
|
dev->mode_config.tv_subconnector_property = tv_subconnector;
|
|
|
|
/*
|
|
* Other, TV specific properties: margins & TV modes.
|
|
*/
|
|
if (drm_mode_create_tv_margin_properties(dev))
|
|
goto nomem;
|
|
|
|
if (num_modes) {
|
|
dev->mode_config.legacy_tv_mode_property =
|
|
drm_property_create(dev, DRM_MODE_PROP_ENUM,
|
|
"mode", num_modes);
|
|
if (!dev->mode_config.legacy_tv_mode_property)
|
|
goto nomem;
|
|
|
|
for (i = 0; i < num_modes; i++)
|
|
drm_property_add_enum(dev->mode_config.legacy_tv_mode_property,
|
|
i, modes[i]);
|
|
}
|
|
|
|
dev->mode_config.tv_brightness_property =
|
|
drm_property_create_range(dev, 0, "brightness", 0, 100);
|
|
if (!dev->mode_config.tv_brightness_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_contrast_property =
|
|
drm_property_create_range(dev, 0, "contrast", 0, 100);
|
|
if (!dev->mode_config.tv_contrast_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_flicker_reduction_property =
|
|
drm_property_create_range(dev, 0, "flicker reduction", 0, 100);
|
|
if (!dev->mode_config.tv_flicker_reduction_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_overscan_property =
|
|
drm_property_create_range(dev, 0, "overscan", 0, 100);
|
|
if (!dev->mode_config.tv_overscan_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_saturation_property =
|
|
drm_property_create_range(dev, 0, "saturation", 0, 100);
|
|
if (!dev->mode_config.tv_saturation_property)
|
|
goto nomem;
|
|
|
|
dev->mode_config.tv_hue_property =
|
|
drm_property_create_range(dev, 0, "hue", 0, 100);
|
|
if (!dev->mode_config.tv_hue_property)
|
|
goto nomem;
|
|
|
|
return 0;
|
|
nomem:
|
|
return -ENOMEM;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_tv_properties_legacy);
|
|
|
|
/**
|
|
* drm_mode_create_tv_properties - create TV specific connector properties
|
|
* @dev: DRM device
|
|
* @supported_tv_modes: Bitmask of TV modes supported (See DRM_MODE_TV_MODE_*)
|
|
*
|
|
* Called by a driver's TV initialization routine, this function creates
|
|
* the TV specific connector properties for a given device.
|
|
*
|
|
* Returns:
|
|
* 0 on success or a negative error code on failure.
|
|
*/
|
|
int drm_mode_create_tv_properties(struct drm_device *dev,
|
|
unsigned int supported_tv_modes)
|
|
{
|
|
struct drm_prop_enum_list tv_mode_list[DRM_MODE_TV_MODE_MAX];
|
|
struct drm_property *tv_mode;
|
|
unsigned int i, len = 0;
|
|
|
|
if (dev->mode_config.tv_mode_property)
|
|
return 0;
|
|
|
|
for (i = 0; i < DRM_MODE_TV_MODE_MAX; i++) {
|
|
if (!(supported_tv_modes & BIT(i)))
|
|
continue;
|
|
|
|
tv_mode_list[len].type = i;
|
|
tv_mode_list[len].name = drm_get_tv_mode_name(i);
|
|
len++;
|
|
}
|
|
|
|
tv_mode = drm_property_create_enum(dev, 0, "TV mode",
|
|
tv_mode_list, len);
|
|
if (!tv_mode)
|
|
return -ENOMEM;
|
|
|
|
dev->mode_config.tv_mode_property = tv_mode;
|
|
|
|
return drm_mode_create_tv_properties_legacy(dev, 0, NULL);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_tv_properties);
|
|
|
|
/**
|
|
* drm_mode_create_scaling_mode_property - create scaling mode property
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver the first time it's needed, must be attached to desired
|
|
* connectors.
|
|
*
|
|
* Atomic drivers should use drm_connector_attach_scaling_mode_property()
|
|
* instead to correctly assign &drm_connector_state.scaling_mode
|
|
* in the atomic state.
|
|
*
|
|
* Returns: %0
|
|
*/
|
|
int drm_mode_create_scaling_mode_property(struct drm_device *dev)
|
|
{
|
|
struct drm_property *scaling_mode;
|
|
|
|
if (dev->mode_config.scaling_mode_property)
|
|
return 0;
|
|
|
|
scaling_mode =
|
|
drm_property_create_enum(dev, 0, "scaling mode",
|
|
drm_scaling_mode_enum_list,
|
|
ARRAY_SIZE(drm_scaling_mode_enum_list));
|
|
|
|
dev->mode_config.scaling_mode_property = scaling_mode;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_scaling_mode_property);
|
|
|
|
/**
|
|
* DOC: Variable refresh properties
|
|
*
|
|
* Variable refresh rate capable displays can dynamically adjust their
|
|
* refresh rate by extending the duration of their vertical front porch
|
|
* until page flip or timeout occurs. This can reduce or remove stuttering
|
|
* and latency in scenarios where the page flip does not align with the
|
|
* vblank interval.
|
|
*
|
|
* An example scenario would be an application flipping at a constant rate
|
|
* of 48Hz on a 60Hz display. The page flip will frequently miss the vblank
|
|
* interval and the same contents will be displayed twice. This can be
|
|
* observed as stuttering for content with motion.
|
|
*
|
|
* If variable refresh rate was active on a display that supported a
|
|
* variable refresh range from 35Hz to 60Hz no stuttering would be observable
|
|
* for the example scenario. The minimum supported variable refresh rate of
|
|
* 35Hz is below the page flip frequency and the vertical front porch can
|
|
* be extended until the page flip occurs. The vblank interval will be
|
|
* directly aligned to the page flip rate.
|
|
*
|
|
* Not all userspace content is suitable for use with variable refresh rate.
|
|
* Large and frequent changes in vertical front porch duration may worsen
|
|
* perceived stuttering for input sensitive applications.
|
|
*
|
|
* Panel brightness will also vary with vertical front porch duration. Some
|
|
* panels may have noticeable differences in brightness between the minimum
|
|
* vertical front porch duration and the maximum vertical front porch duration.
|
|
* Large and frequent changes in vertical front porch duration may produce
|
|
* observable flickering for such panels.
|
|
*
|
|
* Userspace control for variable refresh rate is supported via properties
|
|
* on the &drm_connector and &drm_crtc objects.
|
|
*
|
|
* "vrr_capable":
|
|
* Optional &drm_connector boolean property that drivers should attach
|
|
* with drm_connector_attach_vrr_capable_property() on connectors that
|
|
* could support variable refresh rates. Drivers should update the
|
|
* property value by calling drm_connector_set_vrr_capable_property().
|
|
*
|
|
* Absence of the property should indicate absence of support.
|
|
*
|
|
* "VRR_ENABLED":
|
|
* Default &drm_crtc boolean property that notifies the driver that the
|
|
* content on the CRTC is suitable for variable refresh rate presentation.
|
|
* The driver will take this property as a hint to enable variable
|
|
* refresh rate support if the receiver supports it, ie. if the
|
|
* "vrr_capable" property is true on the &drm_connector object. The
|
|
* vertical front porch duration will be extended until page-flip or
|
|
* timeout when enabled.
|
|
*
|
|
* The minimum vertical front porch duration is defined as the vertical
|
|
* front porch duration for the current mode.
|
|
*
|
|
* The maximum vertical front porch duration is greater than or equal to
|
|
* the minimum vertical front porch duration. The duration is derived
|
|
* from the minimum supported variable refresh rate for the connector.
|
|
*
|
|
* The driver may place further restrictions within these minimum
|
|
* and maximum bounds.
|
|
*/
|
|
|
|
/**
|
|
* drm_connector_attach_vrr_capable_property - creates the
|
|
* vrr_capable property
|
|
* @connector: connector to create the vrr_capable property on.
|
|
*
|
|
* This is used by atomic drivers to add support for querying
|
|
* variable refresh rate capability for a connector.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_attach_vrr_capable_property(
|
|
struct drm_connector *connector)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_property *prop;
|
|
|
|
if (!connector->vrr_capable_property) {
|
|
prop = drm_property_create_bool(dev, DRM_MODE_PROP_IMMUTABLE,
|
|
"vrr_capable");
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
|
|
connector->vrr_capable_property = prop;
|
|
drm_object_attach_property(&connector->base, prop, 0);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_vrr_capable_property);
|
|
|
|
/**
|
|
* drm_connector_attach_scaling_mode_property - attach atomic scaling mode property
|
|
* @connector: connector to attach scaling mode property on.
|
|
* @scaling_mode_mask: or'ed mask of BIT(%DRM_MODE_SCALE_\*).
|
|
*
|
|
* This is used to add support for scaling mode to atomic drivers.
|
|
* The scaling mode will be set to &drm_connector_state.scaling_mode
|
|
* and can be used from &drm_connector_helper_funcs->atomic_check for validation.
|
|
*
|
|
* This is the atomic version of drm_mode_create_scaling_mode_property().
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
|
|
u32 scaling_mode_mask)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_property *scaling_mode_property;
|
|
int i;
|
|
const unsigned valid_scaling_mode_mask =
|
|
(1U << ARRAY_SIZE(drm_scaling_mode_enum_list)) - 1;
|
|
|
|
if (WARN_ON(hweight32(scaling_mode_mask) < 2 ||
|
|
scaling_mode_mask & ~valid_scaling_mode_mask))
|
|
return -EINVAL;
|
|
|
|
scaling_mode_property =
|
|
drm_property_create(dev, DRM_MODE_PROP_ENUM, "scaling mode",
|
|
hweight32(scaling_mode_mask));
|
|
|
|
if (!scaling_mode_property)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(drm_scaling_mode_enum_list); i++) {
|
|
int ret;
|
|
|
|
if (!(BIT(i) & scaling_mode_mask))
|
|
continue;
|
|
|
|
ret = drm_property_add_enum(scaling_mode_property,
|
|
drm_scaling_mode_enum_list[i].type,
|
|
drm_scaling_mode_enum_list[i].name);
|
|
|
|
if (ret) {
|
|
drm_property_destroy(dev, scaling_mode_property);
|
|
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
drm_object_attach_property(&connector->base,
|
|
scaling_mode_property, 0);
|
|
|
|
connector->scaling_mode_property = scaling_mode_property;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_scaling_mode_property);
|
|
|
|
/**
|
|
* drm_mode_create_aspect_ratio_property - create aspect ratio property
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver the first time it's needed, must be attached to desired
|
|
* connectors.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
|
|
{
|
|
if (dev->mode_config.aspect_ratio_property)
|
|
return 0;
|
|
|
|
dev->mode_config.aspect_ratio_property =
|
|
drm_property_create_enum(dev, 0, "aspect ratio",
|
|
drm_aspect_ratio_enum_list,
|
|
ARRAY_SIZE(drm_aspect_ratio_enum_list));
|
|
|
|
if (dev->mode_config.aspect_ratio_property == NULL)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
|
|
|
|
/**
|
|
* DOC: standard connector properties
|
|
*
|
|
* Colorspace:
|
|
* This property helps select a suitable colorspace based on the sink
|
|
* capability. Modern sink devices support wider gamut like BT2020.
|
|
* This helps switch to BT2020 mode if the BT2020 encoded video stream
|
|
* is being played by the user, same for any other colorspace. Thereby
|
|
* giving a good visual experience to users.
|
|
*
|
|
* The expectation from userspace is that it should parse the EDID
|
|
* and get supported colorspaces. Use this property and switch to the
|
|
* one supported. Sink supported colorspaces should be retrieved by
|
|
* userspace from EDID and driver will not explicitly expose them.
|
|
*
|
|
* Basically the expectation from userspace is:
|
|
* - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink
|
|
* colorspace
|
|
* - Set this new property to let the sink know what it
|
|
* converted the CRTC output to.
|
|
* - This property is just to inform sink what colorspace
|
|
* source is trying to drive.
|
|
*
|
|
* Because between HDMI and DP have different colorspaces,
|
|
* drm_mode_create_hdmi_colorspace_property() is used for HDMI connector and
|
|
* drm_mode_create_dp_colorspace_property() is used for DP connector.
|
|
*/
|
|
|
|
static int drm_mode_create_colorspace_property(struct drm_connector *connector,
|
|
u32 supported_colorspaces)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
u32 colorspaces = supported_colorspaces | BIT(DRM_MODE_COLORIMETRY_DEFAULT);
|
|
struct drm_prop_enum_list enum_list[DRM_MODE_COLORIMETRY_COUNT];
|
|
int i, len;
|
|
|
|
if (connector->colorspace_property)
|
|
return 0;
|
|
|
|
if (!supported_colorspaces) {
|
|
drm_err(dev, "No supported colorspaces provded on [CONNECTOR:%d:%s]\n",
|
|
connector->base.id, connector->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((supported_colorspaces & -BIT(DRM_MODE_COLORIMETRY_COUNT)) != 0) {
|
|
drm_err(dev, "Unknown colorspace provded on [CONNECTOR:%d:%s]\n",
|
|
connector->base.id, connector->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
len = 0;
|
|
for (i = 0; i < DRM_MODE_COLORIMETRY_COUNT; i++) {
|
|
if ((colorspaces & BIT(i)) == 0)
|
|
continue;
|
|
|
|
enum_list[len].type = i;
|
|
enum_list[len].name = colorspace_names[i];
|
|
len++;
|
|
}
|
|
|
|
connector->colorspace_property =
|
|
drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, "Colorspace",
|
|
enum_list,
|
|
len);
|
|
|
|
if (!connector->colorspace_property)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_mode_create_hdmi_colorspace_property - create hdmi colorspace property
|
|
* @connector: connector to create the Colorspace property on.
|
|
*
|
|
* Called by a driver the first time it's needed, must be attached to desired
|
|
* HDMI connectors.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_create_hdmi_colorspace_property(struct drm_connector *connector,
|
|
u32 supported_colorspaces)
|
|
{
|
|
u32 colorspaces;
|
|
|
|
if (supported_colorspaces)
|
|
colorspaces = supported_colorspaces & hdmi_colorspaces;
|
|
else
|
|
colorspaces = hdmi_colorspaces;
|
|
|
|
return drm_mode_create_colorspace_property(connector, colorspaces);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_hdmi_colorspace_property);
|
|
|
|
/**
|
|
* drm_mode_create_dp_colorspace_property - create dp colorspace property
|
|
* @connector: connector to create the Colorspace property on.
|
|
*
|
|
* Called by a driver the first time it's needed, must be attached to desired
|
|
* DP connectors.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_create_dp_colorspace_property(struct drm_connector *connector,
|
|
u32 supported_colorspaces)
|
|
{
|
|
u32 colorspaces;
|
|
|
|
if (supported_colorspaces)
|
|
colorspaces = supported_colorspaces & dp_colorspaces;
|
|
else
|
|
colorspaces = dp_colorspaces;
|
|
|
|
return drm_mode_create_colorspace_property(connector, colorspaces);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_dp_colorspace_property);
|
|
|
|
/**
|
|
* drm_mode_create_content_type_property - create content type property
|
|
* @dev: DRM device
|
|
*
|
|
* Called by a driver the first time it's needed, must be attached to desired
|
|
* connectors.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_mode_create_content_type_property(struct drm_device *dev)
|
|
{
|
|
if (dev->mode_config.content_type_property)
|
|
return 0;
|
|
|
|
dev->mode_config.content_type_property =
|
|
drm_property_create_enum(dev, 0, "content type",
|
|
drm_content_type_enum_list,
|
|
ARRAY_SIZE(drm_content_type_enum_list));
|
|
|
|
if (dev->mode_config.content_type_property == NULL)
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_content_type_property);
|
|
|
|
/**
|
|
* drm_mode_create_suggested_offset_properties - create suggests offset properties
|
|
* @dev: DRM device
|
|
*
|
|
* Create the suggested x/y offset property for connectors.
|
|
*
|
|
* Returns:
|
|
* 0 on success or a negative error code on failure.
|
|
*/
|
|
int drm_mode_create_suggested_offset_properties(struct drm_device *dev)
|
|
{
|
|
if (dev->mode_config.suggested_x_property && dev->mode_config.suggested_y_property)
|
|
return 0;
|
|
|
|
dev->mode_config.suggested_x_property =
|
|
drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested X", 0, 0xffffffff);
|
|
|
|
dev->mode_config.suggested_y_property =
|
|
drm_property_create_range(dev, DRM_MODE_PROP_IMMUTABLE, "suggested Y", 0, 0xffffffff);
|
|
|
|
if (dev->mode_config.suggested_x_property == NULL ||
|
|
dev->mode_config.suggested_y_property == NULL)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_suggested_offset_properties);
|
|
|
|
/**
|
|
* drm_connector_set_path_property - set tile property on connector
|
|
* @connector: connector to set property on.
|
|
* @path: path to use for property; must not be NULL.
|
|
*
|
|
* This creates a property to expose to userspace to specify a
|
|
* connector path. This is mainly used for DisplayPort MST where
|
|
* connectors have a topology and we want to allow userspace to give
|
|
* them more meaningful names.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_set_path_property(struct drm_connector *connector,
|
|
const char *path)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
int ret;
|
|
|
|
ret = drm_property_replace_global_blob(dev,
|
|
&connector->path_blob_ptr,
|
|
strlen(path) + 1,
|
|
path,
|
|
&connector->base,
|
|
dev->mode_config.path_property);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_set_path_property);
|
|
|
|
/**
|
|
* drm_connector_set_tile_property - set tile property on connector
|
|
* @connector: connector to set property on.
|
|
*
|
|
* This looks up the tile information for a connector, and creates a
|
|
* property for userspace to parse if it exists. The property is of
|
|
* the form of 8 integers using ':' as a separator.
|
|
* This is used for dual port tiled displays with DisplayPort SST
|
|
* or DisplayPort MST connectors.
|
|
*
|
|
* Returns:
|
|
* Zero on success, errno on failure.
|
|
*/
|
|
int drm_connector_set_tile_property(struct drm_connector *connector)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
char tile[256];
|
|
int ret;
|
|
|
|
if (!connector->has_tile) {
|
|
ret = drm_property_replace_global_blob(dev,
|
|
&connector->tile_blob_ptr,
|
|
0,
|
|
NULL,
|
|
&connector->base,
|
|
dev->mode_config.tile_property);
|
|
return ret;
|
|
}
|
|
|
|
snprintf(tile, 256, "%d:%d:%d:%d:%d:%d:%d:%d",
|
|
connector->tile_group->id, connector->tile_is_single_monitor,
|
|
connector->num_h_tile, connector->num_v_tile,
|
|
connector->tile_h_loc, connector->tile_v_loc,
|
|
connector->tile_h_size, connector->tile_v_size);
|
|
|
|
ret = drm_property_replace_global_blob(dev,
|
|
&connector->tile_blob_ptr,
|
|
strlen(tile) + 1,
|
|
tile,
|
|
&connector->base,
|
|
dev->mode_config.tile_property);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_set_tile_property);
|
|
|
|
/**
|
|
* drm_connector_set_link_status_property - Set link status property of a connector
|
|
* @connector: drm connector
|
|
* @link_status: new value of link status property (0: Good, 1: Bad)
|
|
*
|
|
* In usual working scenario, this link status property will always be set to
|
|
* "GOOD". If something fails during or after a mode set, the kernel driver
|
|
* may set this link status property to "BAD". The caller then needs to send a
|
|
* hotplug uevent for userspace to re-check the valid modes through
|
|
* GET_CONNECTOR_IOCTL and retry modeset.
|
|
*
|
|
* Note: Drivers cannot rely on userspace to support this property and
|
|
* issue a modeset. As such, they may choose to handle issues (like
|
|
* re-training a link) without userspace's intervention.
|
|
*
|
|
* The reason for adding this property is to handle link training failures, but
|
|
* it is not limited to DP or link training. For example, if we implement
|
|
* asynchronous setcrtc, this property can be used to report any failures in that.
|
|
*/
|
|
void drm_connector_set_link_status_property(struct drm_connector *connector,
|
|
uint64_t link_status)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
|
|
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
|
|
connector->state->link_status = link_status;
|
|
drm_modeset_unlock(&dev->mode_config.connection_mutex);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_set_link_status_property);
|
|
|
|
/**
|
|
* drm_connector_attach_max_bpc_property - attach "max bpc" property
|
|
* @connector: connector to attach max bpc property on.
|
|
* @min: The minimum bit depth supported by the connector.
|
|
* @max: The maximum bit depth supported by the connector.
|
|
*
|
|
* This is used to add support for limiting the bit depth on a connector.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_attach_max_bpc_property(struct drm_connector *connector,
|
|
int min, int max)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_property *prop;
|
|
|
|
prop = connector->max_bpc_property;
|
|
if (!prop) {
|
|
prop = drm_property_create_range(dev, 0, "max bpc", min, max);
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
|
|
connector->max_bpc_property = prop;
|
|
}
|
|
|
|
drm_object_attach_property(&connector->base, prop, max);
|
|
connector->state->max_requested_bpc = max;
|
|
connector->state->max_bpc = max;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_max_bpc_property);
|
|
|
|
/**
|
|
* drm_connector_attach_hdr_output_metadata_property - attach "HDR_OUTPUT_METADA" property
|
|
* @connector: connector to attach the property on.
|
|
*
|
|
* This is used to allow the userspace to send HDR Metadata to the
|
|
* driver.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_attach_hdr_output_metadata_property(struct drm_connector *connector)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_property *prop = dev->mode_config.hdr_output_metadata_property;
|
|
|
|
drm_object_attach_property(&connector->base, prop, 0);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_hdr_output_metadata_property);
|
|
|
|
/**
|
|
* drm_connector_attach_colorspace_property - attach "Colorspace" property
|
|
* @connector: connector to attach the property on.
|
|
*
|
|
* This is used to allow the userspace to signal the output colorspace
|
|
* to the driver.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_attach_colorspace_property(struct drm_connector *connector)
|
|
{
|
|
struct drm_property *prop = connector->colorspace_property;
|
|
|
|
drm_object_attach_property(&connector->base, prop, DRM_MODE_COLORIMETRY_DEFAULT);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_colorspace_property);
|
|
|
|
/**
|
|
* drm_connector_atomic_hdr_metadata_equal - checks if the hdr metadata changed
|
|
* @old_state: old connector state to compare
|
|
* @new_state: new connector state to compare
|
|
*
|
|
* This is used by HDR-enabled drivers to test whether the HDR metadata
|
|
* have changed between two different connector state (and thus probably
|
|
* requires a full blown mode change).
|
|
*
|
|
* Returns:
|
|
* True if the metadata are equal, False otherwise
|
|
*/
|
|
bool drm_connector_atomic_hdr_metadata_equal(struct drm_connector_state *old_state,
|
|
struct drm_connector_state *new_state)
|
|
{
|
|
struct drm_property_blob *old_blob = old_state->hdr_output_metadata;
|
|
struct drm_property_blob *new_blob = new_state->hdr_output_metadata;
|
|
|
|
if (!old_blob || !new_blob)
|
|
return old_blob == new_blob;
|
|
|
|
if (old_blob->length != new_blob->length)
|
|
return false;
|
|
|
|
return !memcmp(old_blob->data, new_blob->data, old_blob->length);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_atomic_hdr_metadata_equal);
|
|
|
|
/**
|
|
* drm_connector_set_vrr_capable_property - sets the variable refresh rate
|
|
* capable property for a connector
|
|
* @connector: drm connector
|
|
* @capable: True if the connector is variable refresh rate capable
|
|
*
|
|
* Should be used by atomic drivers to update the indicated support for
|
|
* variable refresh rate over a connector.
|
|
*/
|
|
void drm_connector_set_vrr_capable_property(
|
|
struct drm_connector *connector, bool capable)
|
|
{
|
|
if (!connector->vrr_capable_property)
|
|
return;
|
|
|
|
drm_object_property_set_value(&connector->base,
|
|
connector->vrr_capable_property,
|
|
capable);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_set_vrr_capable_property);
|
|
|
|
/**
|
|
* drm_connector_set_panel_orientation - sets the connector's panel_orientation
|
|
* @connector: connector for which to set the panel-orientation property.
|
|
* @panel_orientation: drm_panel_orientation value to set
|
|
*
|
|
* This function sets the connector's panel_orientation and attaches
|
|
* a "panel orientation" property to the connector.
|
|
*
|
|
* Calling this function on a connector where the panel_orientation has
|
|
* already been set is a no-op (e.g. the orientation has been overridden with
|
|
* a kernel commandline option).
|
|
*
|
|
* It is allowed to call this function with a panel_orientation of
|
|
* DRM_MODE_PANEL_ORIENTATION_UNKNOWN, in which case it is a no-op.
|
|
*
|
|
* The function shouldn't be called in panel after drm is registered (i.e.
|
|
* drm_dev_register() is called in drm).
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_set_panel_orientation(
|
|
struct drm_connector *connector,
|
|
enum drm_panel_orientation panel_orientation)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_display_info *info = &connector->display_info;
|
|
struct drm_property *prop;
|
|
|
|
/* Already set? */
|
|
if (info->panel_orientation != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
|
|
return 0;
|
|
|
|
/* Don't attach the property if the orientation is unknown */
|
|
if (panel_orientation == DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
|
|
return 0;
|
|
|
|
info->panel_orientation = panel_orientation;
|
|
|
|
prop = dev->mode_config.panel_orientation_property;
|
|
if (!prop) {
|
|
prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
|
|
"panel orientation",
|
|
drm_panel_orientation_enum_list,
|
|
ARRAY_SIZE(drm_panel_orientation_enum_list));
|
|
if (!prop)
|
|
return -ENOMEM;
|
|
|
|
dev->mode_config.panel_orientation_property = prop;
|
|
}
|
|
|
|
drm_object_attach_property(&connector->base, prop,
|
|
info->panel_orientation);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_set_panel_orientation);
|
|
|
|
/**
|
|
* drm_connector_set_panel_orientation_with_quirk - set the
|
|
* connector's panel_orientation after checking for quirks
|
|
* @connector: connector for which to init the panel-orientation property.
|
|
* @panel_orientation: drm_panel_orientation value to set
|
|
* @width: width in pixels of the panel, used for panel quirk detection
|
|
* @height: height in pixels of the panel, used for panel quirk detection
|
|
*
|
|
* Like drm_connector_set_panel_orientation(), but with a check for platform
|
|
* specific (e.g. DMI based) quirks overriding the passed in panel_orientation.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_set_panel_orientation_with_quirk(
|
|
struct drm_connector *connector,
|
|
enum drm_panel_orientation panel_orientation,
|
|
int width, int height)
|
|
{
|
|
int orientation_quirk;
|
|
|
|
orientation_quirk = drm_get_panel_orientation_quirk(width, height);
|
|
if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
|
|
panel_orientation = orientation_quirk;
|
|
|
|
return drm_connector_set_panel_orientation(connector,
|
|
panel_orientation);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_set_panel_orientation_with_quirk);
|
|
|
|
/**
|
|
* drm_connector_set_orientation_from_panel -
|
|
* set the connector's panel_orientation from panel's callback.
|
|
* @connector: connector for which to init the panel-orientation property.
|
|
* @panel: panel that can provide orientation information.
|
|
*
|
|
* Drm drivers should call this function before drm_dev_register().
|
|
* Orientation is obtained from panel's .get_orientation() callback.
|
|
*
|
|
* Returns:
|
|
* Zero on success, negative errno on failure.
|
|
*/
|
|
int drm_connector_set_orientation_from_panel(
|
|
struct drm_connector *connector,
|
|
struct drm_panel *panel)
|
|
{
|
|
enum drm_panel_orientation orientation;
|
|
|
|
if (panel && panel->funcs && panel->funcs->get_orientation)
|
|
orientation = panel->funcs->get_orientation(panel);
|
|
else
|
|
orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
|
|
|
|
return drm_connector_set_panel_orientation(connector, orientation);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_set_orientation_from_panel);
|
|
|
|
static const struct drm_prop_enum_list privacy_screen_enum[] = {
|
|
{ PRIVACY_SCREEN_DISABLED, "Disabled" },
|
|
{ PRIVACY_SCREEN_ENABLED, "Enabled" },
|
|
{ PRIVACY_SCREEN_DISABLED_LOCKED, "Disabled-locked" },
|
|
{ PRIVACY_SCREEN_ENABLED_LOCKED, "Enabled-locked" },
|
|
};
|
|
|
|
/**
|
|
* drm_connector_create_privacy_screen_properties - create the drm connecter's
|
|
* privacy-screen properties.
|
|
* @connector: connector for which to create the privacy-screen properties
|
|
*
|
|
* This function creates the "privacy-screen sw-state" and "privacy-screen
|
|
* hw-state" properties for the connector. They are not attached.
|
|
*/
|
|
void
|
|
drm_connector_create_privacy_screen_properties(struct drm_connector *connector)
|
|
{
|
|
if (connector->privacy_screen_sw_state_property)
|
|
return;
|
|
|
|
/* Note sw-state only supports the first 2 values of the enum */
|
|
connector->privacy_screen_sw_state_property =
|
|
drm_property_create_enum(connector->dev, DRM_MODE_PROP_ENUM,
|
|
"privacy-screen sw-state",
|
|
privacy_screen_enum, 2);
|
|
|
|
connector->privacy_screen_hw_state_property =
|
|
drm_property_create_enum(connector->dev,
|
|
DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_ENUM,
|
|
"privacy-screen hw-state",
|
|
privacy_screen_enum,
|
|
ARRAY_SIZE(privacy_screen_enum));
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_create_privacy_screen_properties);
|
|
|
|
/**
|
|
* drm_connector_attach_privacy_screen_properties - attach the drm connecter's
|
|
* privacy-screen properties.
|
|
* @connector: connector on which to attach the privacy-screen properties
|
|
*
|
|
* This function attaches the "privacy-screen sw-state" and "privacy-screen
|
|
* hw-state" properties to the connector. The initial state of both is set
|
|
* to "Disabled".
|
|
*/
|
|
void
|
|
drm_connector_attach_privacy_screen_properties(struct drm_connector *connector)
|
|
{
|
|
if (!connector->privacy_screen_sw_state_property)
|
|
return;
|
|
|
|
drm_object_attach_property(&connector->base,
|
|
connector->privacy_screen_sw_state_property,
|
|
PRIVACY_SCREEN_DISABLED);
|
|
|
|
drm_object_attach_property(&connector->base,
|
|
connector->privacy_screen_hw_state_property,
|
|
PRIVACY_SCREEN_DISABLED);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_privacy_screen_properties);
|
|
|
|
static void drm_connector_update_privacy_screen_properties(
|
|
struct drm_connector *connector, bool set_sw_state)
|
|
{
|
|
enum drm_privacy_screen_status sw_state, hw_state;
|
|
|
|
drm_privacy_screen_get_state(connector->privacy_screen,
|
|
&sw_state, &hw_state);
|
|
|
|
if (set_sw_state)
|
|
connector->state->privacy_screen_sw_state = sw_state;
|
|
drm_object_property_set_value(&connector->base,
|
|
connector->privacy_screen_hw_state_property, hw_state);
|
|
}
|
|
|
|
static int drm_connector_privacy_screen_notifier(
|
|
struct notifier_block *nb, unsigned long action, void *data)
|
|
{
|
|
struct drm_connector *connector =
|
|
container_of(nb, struct drm_connector, privacy_screen_notifier);
|
|
struct drm_device *dev = connector->dev;
|
|
|
|
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
|
|
drm_connector_update_privacy_screen_properties(connector, true);
|
|
drm_modeset_unlock(&dev->mode_config.connection_mutex);
|
|
|
|
drm_sysfs_connector_status_event(connector,
|
|
connector->privacy_screen_sw_state_property);
|
|
drm_sysfs_connector_status_event(connector,
|
|
connector->privacy_screen_hw_state_property);
|
|
|
|
return NOTIFY_DONE;
|
|
}
|
|
|
|
/**
|
|
* drm_connector_attach_privacy_screen_provider - attach a privacy-screen to
|
|
* the connector
|
|
* @connector: connector to attach the privacy-screen to
|
|
* @priv: drm_privacy_screen to attach
|
|
*
|
|
* Create and attach the standard privacy-screen properties and register
|
|
* a generic notifier for generating sysfs-connector-status-events
|
|
* on external changes to the privacy-screen status.
|
|
* This function takes ownership of the passed in drm_privacy_screen and will
|
|
* call drm_privacy_screen_put() on it when the connector is destroyed.
|
|
*/
|
|
void drm_connector_attach_privacy_screen_provider(
|
|
struct drm_connector *connector, struct drm_privacy_screen *priv)
|
|
{
|
|
connector->privacy_screen = priv;
|
|
connector->privacy_screen_notifier.notifier_call =
|
|
drm_connector_privacy_screen_notifier;
|
|
|
|
drm_connector_create_privacy_screen_properties(connector);
|
|
drm_connector_update_privacy_screen_properties(connector, true);
|
|
drm_connector_attach_privacy_screen_properties(connector);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_attach_privacy_screen_provider);
|
|
|
|
/**
|
|
* drm_connector_update_privacy_screen - update connector's privacy-screen sw-state
|
|
* @connector_state: connector-state to update the privacy-screen for
|
|
*
|
|
* This function calls drm_privacy_screen_set_sw_state() on the connector's
|
|
* privacy-screen.
|
|
*
|
|
* If the connector has no privacy-screen, then this is a no-op.
|
|
*/
|
|
void drm_connector_update_privacy_screen(const struct drm_connector_state *connector_state)
|
|
{
|
|
struct drm_connector *connector = connector_state->connector;
|
|
int ret;
|
|
|
|
if (!connector->privacy_screen)
|
|
return;
|
|
|
|
ret = drm_privacy_screen_set_sw_state(connector->privacy_screen,
|
|
connector_state->privacy_screen_sw_state);
|
|
if (ret) {
|
|
drm_err(connector->dev, "Error updating privacy-screen sw_state\n");
|
|
return;
|
|
}
|
|
|
|
/* The hw_state property value may have changed, update it. */
|
|
drm_connector_update_privacy_screen_properties(connector, false);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_update_privacy_screen);
|
|
|
|
int drm_connector_set_obj_prop(struct drm_mode_object *obj,
|
|
struct drm_property *property,
|
|
uint64_t value)
|
|
{
|
|
int ret = -EINVAL;
|
|
struct drm_connector *connector = obj_to_connector(obj);
|
|
|
|
/* Do DPMS ourselves */
|
|
if (property == connector->dev->mode_config.dpms_property) {
|
|
ret = (*connector->funcs->dpms)(connector, (int)value);
|
|
} else if (connector->funcs->set_property)
|
|
ret = connector->funcs->set_property(connector, property, value);
|
|
|
|
if (!ret)
|
|
drm_object_property_set_value(&connector->base, property, value);
|
|
return ret;
|
|
}
|
|
|
|
int drm_connector_property_set_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_connector_set_property *conn_set_prop = data;
|
|
struct drm_mode_obj_set_property obj_set_prop = {
|
|
.value = conn_set_prop->value,
|
|
.prop_id = conn_set_prop->prop_id,
|
|
.obj_id = conn_set_prop->connector_id,
|
|
.obj_type = DRM_MODE_OBJECT_CONNECTOR
|
|
};
|
|
|
|
/* It does all the locking and checking we need */
|
|
return drm_mode_obj_set_property_ioctl(dev, &obj_set_prop, file_priv);
|
|
}
|
|
|
|
static struct drm_encoder *drm_connector_get_encoder(struct drm_connector *connector)
|
|
{
|
|
/* For atomic drivers only state objects are synchronously updated and
|
|
* protected by modeset locks, so check those first.
|
|
*/
|
|
if (connector->state)
|
|
return connector->state->best_encoder;
|
|
return connector->encoder;
|
|
}
|
|
|
|
static bool
|
|
drm_mode_expose_to_userspace(const struct drm_display_mode *mode,
|
|
const struct list_head *modes,
|
|
const struct drm_file *file_priv)
|
|
{
|
|
/*
|
|
* If user-space hasn't configured the driver to expose the stereo 3D
|
|
* modes, don't expose them.
|
|
*/
|
|
if (!file_priv->stereo_allowed && drm_mode_is_stereo(mode))
|
|
return false;
|
|
/*
|
|
* If user-space hasn't configured the driver to expose the modes
|
|
* with aspect-ratio, don't expose them. However if such a mode
|
|
* is unique, let it be exposed, but reset the aspect-ratio flags
|
|
* while preparing the list of user-modes.
|
|
*/
|
|
if (!file_priv->aspect_ratio_allowed) {
|
|
const struct drm_display_mode *mode_itr;
|
|
|
|
list_for_each_entry(mode_itr, modes, head) {
|
|
if (mode_itr->expose_to_userspace &&
|
|
drm_mode_match(mode_itr, mode,
|
|
DRM_MODE_MATCH_TIMINGS |
|
|
DRM_MODE_MATCH_CLOCK |
|
|
DRM_MODE_MATCH_FLAGS |
|
|
DRM_MODE_MATCH_3D_FLAGS))
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
int drm_mode_getconnector(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_connector *out_resp = data;
|
|
struct drm_connector *connector;
|
|
struct drm_encoder *encoder;
|
|
struct drm_display_mode *mode;
|
|
int mode_count = 0;
|
|
int encoders_count = 0;
|
|
int ret = 0;
|
|
int copied = 0;
|
|
struct drm_mode_modeinfo u_mode;
|
|
struct drm_mode_modeinfo __user *mode_ptr;
|
|
uint32_t __user *encoder_ptr;
|
|
bool is_current_master;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EOPNOTSUPP;
|
|
|
|
memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
|
|
|
|
connector = drm_connector_lookup(dev, file_priv, out_resp->connector_id);
|
|
if (!connector)
|
|
return -ENOENT;
|
|
|
|
encoders_count = hweight32(connector->possible_encoders);
|
|
|
|
if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
|
|
copied = 0;
|
|
encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
|
|
|
|
drm_connector_for_each_possible_encoder(connector, encoder) {
|
|
if (put_user(encoder->base.id, encoder_ptr + copied)) {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
}
|
|
out_resp->count_encoders = encoders_count;
|
|
|
|
out_resp->connector_id = connector->base.id;
|
|
out_resp->connector_type = connector->connector_type;
|
|
out_resp->connector_type_id = connector->connector_type_id;
|
|
|
|
is_current_master = drm_is_current_master(file_priv);
|
|
|
|
mutex_lock(&dev->mode_config.mutex);
|
|
if (out_resp->count_modes == 0) {
|
|
if (is_current_master)
|
|
connector->funcs->fill_modes(connector,
|
|
dev->mode_config.max_width,
|
|
dev->mode_config.max_height);
|
|
else
|
|
drm_dbg_kms(dev, "User-space requested a forced probe on [CONNECTOR:%d:%s] but is not the DRM master, demoting to read-only probe",
|
|
connector->base.id, connector->name);
|
|
}
|
|
|
|
out_resp->mm_width = connector->display_info.width_mm;
|
|
out_resp->mm_height = connector->display_info.height_mm;
|
|
out_resp->subpixel = connector->display_info.subpixel_order;
|
|
out_resp->connection = connector->status;
|
|
|
|
/* delayed so we get modes regardless of pre-fill_modes state */
|
|
list_for_each_entry(mode, &connector->modes, head) {
|
|
WARN_ON(mode->expose_to_userspace);
|
|
|
|
if (drm_mode_expose_to_userspace(mode, &connector->modes,
|
|
file_priv)) {
|
|
mode->expose_to_userspace = true;
|
|
mode_count++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* This ioctl is called twice, once to determine how much space is
|
|
* needed, and the 2nd time to fill it.
|
|
*/
|
|
if ((out_resp->count_modes >= mode_count) && mode_count) {
|
|
copied = 0;
|
|
mode_ptr = (struct drm_mode_modeinfo __user *)(unsigned long)out_resp->modes_ptr;
|
|
list_for_each_entry(mode, &connector->modes, head) {
|
|
if (!mode->expose_to_userspace)
|
|
continue;
|
|
|
|
/* Clear the tag for the next time around */
|
|
mode->expose_to_userspace = false;
|
|
|
|
drm_mode_convert_to_umode(&u_mode, mode);
|
|
/*
|
|
* Reset aspect ratio flags of user-mode, if modes with
|
|
* aspect-ratio are not supported.
|
|
*/
|
|
if (!file_priv->aspect_ratio_allowed)
|
|
u_mode.flags &= ~DRM_MODE_FLAG_PIC_AR_MASK;
|
|
if (copy_to_user(mode_ptr + copied,
|
|
&u_mode, sizeof(u_mode))) {
|
|
ret = -EFAULT;
|
|
|
|
/*
|
|
* Clear the tag for the rest of
|
|
* the modes for the next time around.
|
|
*/
|
|
list_for_each_entry_continue(mode, &connector->modes, head)
|
|
mode->expose_to_userspace = false;
|
|
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
goto out;
|
|
}
|
|
copied++;
|
|
}
|
|
} else {
|
|
/* Clear the tag for the next time around */
|
|
list_for_each_entry(mode, &connector->modes, head)
|
|
mode->expose_to_userspace = false;
|
|
}
|
|
|
|
out_resp->count_modes = mode_count;
|
|
mutex_unlock(&dev->mode_config.mutex);
|
|
|
|
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
|
|
encoder = drm_connector_get_encoder(connector);
|
|
if (encoder)
|
|
out_resp->encoder_id = encoder->base.id;
|
|
else
|
|
out_resp->encoder_id = 0;
|
|
|
|
/* Only grab properties after probing, to make sure EDID and other
|
|
* properties reflect the latest status.
|
|
*/
|
|
ret = drm_mode_object_get_properties(&connector->base, file_priv->atomic,
|
|
(uint32_t __user *)(unsigned long)(out_resp->props_ptr),
|
|
(uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr),
|
|
&out_resp->count_props);
|
|
drm_modeset_unlock(&dev->mode_config.connection_mutex);
|
|
|
|
out:
|
|
drm_connector_put(connector);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* drm_connector_find_by_fwnode - Find a connector based on the associated fwnode
|
|
* @fwnode: fwnode for which to find the matching drm_connector
|
|
*
|
|
* This functions looks up a drm_connector based on its associated fwnode. When
|
|
* a connector is found a reference to the connector is returned. The caller must
|
|
* call drm_connector_put() to release this reference when it is done with the
|
|
* connector.
|
|
*
|
|
* Returns: A reference to the found connector or an ERR_PTR().
|
|
*/
|
|
struct drm_connector *drm_connector_find_by_fwnode(struct fwnode_handle *fwnode)
|
|
{
|
|
struct drm_connector *connector, *found = ERR_PTR(-ENODEV);
|
|
|
|
if (!fwnode)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
mutex_lock(&connector_list_lock);
|
|
|
|
list_for_each_entry(connector, &connector_list, global_connector_list_entry) {
|
|
if (connector->fwnode == fwnode ||
|
|
(connector->fwnode && connector->fwnode->secondary == fwnode)) {
|
|
drm_connector_get(connector);
|
|
found = connector;
|
|
break;
|
|
}
|
|
}
|
|
|
|
mutex_unlock(&connector_list_lock);
|
|
|
|
return found;
|
|
}
|
|
|
|
/**
|
|
* drm_connector_oob_hotplug_event - Report out-of-band hotplug event to connector
|
|
* @connector_fwnode: fwnode_handle to report the event on
|
|
*
|
|
* On some hardware a hotplug event notification may come from outside the display
|
|
* driver / device. An example of this is some USB Type-C setups where the hardware
|
|
* muxes the DisplayPort data and aux-lines but does not pass the altmode HPD
|
|
* status bit to the GPU's DP HPD pin.
|
|
*
|
|
* This function can be used to report these out-of-band events after obtaining
|
|
* a drm_connector reference through calling drm_connector_find_by_fwnode().
|
|
*/
|
|
void drm_connector_oob_hotplug_event(struct fwnode_handle *connector_fwnode)
|
|
{
|
|
struct drm_connector *connector;
|
|
|
|
connector = drm_connector_find_by_fwnode(connector_fwnode);
|
|
if (IS_ERR(connector))
|
|
return;
|
|
|
|
if (connector->funcs->oob_hotplug_event)
|
|
connector->funcs->oob_hotplug_event(connector);
|
|
|
|
drm_connector_put(connector);
|
|
}
|
|
EXPORT_SYMBOL(drm_connector_oob_hotplug_event);
|
|
|
|
|
|
/**
|
|
* DOC: Tile group
|
|
*
|
|
* Tile groups are used to represent tiled monitors with a unique integer
|
|
* identifier. Tiled monitors using DisplayID v1.3 have a unique 8-byte handle,
|
|
* we store this in a tile group, so we have a common identifier for all tiles
|
|
* in a monitor group. The property is called "TILE". Drivers can manage tile
|
|
* groups using drm_mode_create_tile_group(), drm_mode_put_tile_group() and
|
|
* drm_mode_get_tile_group(). But this is only needed for internal panels where
|
|
* the tile group information is exposed through a non-standard way.
|
|
*/
|
|
|
|
static void drm_tile_group_free(struct kref *kref)
|
|
{
|
|
struct drm_tile_group *tg = container_of(kref, struct drm_tile_group, refcount);
|
|
struct drm_device *dev = tg->dev;
|
|
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
idr_remove(&dev->mode_config.tile_idr, tg->id);
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
kfree(tg);
|
|
}
|
|
|
|
/**
|
|
* drm_mode_put_tile_group - drop a reference to a tile group.
|
|
* @dev: DRM device
|
|
* @tg: tile group to drop reference to.
|
|
*
|
|
* drop reference to tile group and free if 0.
|
|
*/
|
|
void drm_mode_put_tile_group(struct drm_device *dev,
|
|
struct drm_tile_group *tg)
|
|
{
|
|
kref_put(&tg->refcount, drm_tile_group_free);
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_put_tile_group);
|
|
|
|
/**
|
|
* drm_mode_get_tile_group - get a reference to an existing tile group
|
|
* @dev: DRM device
|
|
* @topology: 8-bytes unique per monitor.
|
|
*
|
|
* Use the unique bytes to get a reference to an existing tile group.
|
|
*
|
|
* RETURNS:
|
|
* tile group or NULL if not found.
|
|
*/
|
|
struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
|
|
const char topology[8])
|
|
{
|
|
struct drm_tile_group *tg;
|
|
int id;
|
|
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) {
|
|
if (!memcmp(tg->group_data, topology, 8)) {
|
|
if (!kref_get_unless_zero(&tg->refcount))
|
|
tg = NULL;
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return tg;
|
|
}
|
|
}
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_get_tile_group);
|
|
|
|
/**
|
|
* drm_mode_create_tile_group - create a tile group from a displayid description
|
|
* @dev: DRM device
|
|
* @topology: 8-bytes unique per monitor.
|
|
*
|
|
* Create a tile group for the unique monitor, and get a unique
|
|
* identifier for the tile group.
|
|
*
|
|
* RETURNS:
|
|
* new tile group or NULL.
|
|
*/
|
|
struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
|
|
const char topology[8])
|
|
{
|
|
struct drm_tile_group *tg;
|
|
int ret;
|
|
|
|
tg = kzalloc(sizeof(*tg), GFP_KERNEL);
|
|
if (!tg)
|
|
return NULL;
|
|
|
|
kref_init(&tg->refcount);
|
|
memcpy(tg->group_data, topology, 8);
|
|
tg->dev = dev;
|
|
|
|
mutex_lock(&dev->mode_config.idr_mutex);
|
|
ret = idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL);
|
|
if (ret >= 0) {
|
|
tg->id = ret;
|
|
} else {
|
|
kfree(tg);
|
|
tg = NULL;
|
|
}
|
|
|
|
mutex_unlock(&dev->mode_config.idr_mutex);
|
|
return tg;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_create_tile_group);
|