drm: Extract drm_connector.[hc]
Pulls in quite a lot of connector related structures (cmdline mode,
force/status enums, display info), but I think that all makes perfect
sense.
Also had to move a few more core kms object stuff into drm_modeset.h.
And as a first cleanup remove the kerneldoc for the 2 connector IOCTL
- DRM core docs are aimed at drivers, no point documenting internal in
excruciating detail.
v2: And also pull in all the connector property code.
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1471034937-651-14-git-send-email-daniel.vetter@ffwll.ch
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
new file mode 100644
index 0000000..99ece67
--- /dev/null
+++ b/drivers/gpu/drm/drm_connector.c
@@ -0,0 +1,1058 @@
+/*
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_edid.h>
+
+#include "drm_crtc_internal.h"
+#include "drm_internal.h"
+
+struct drm_conn_prop_enum_list {
+ int type;
+ const char *name;
+ struct ida ida;
+};
+
+/*
+ * Connector and encoder types.
+ */
+static struct drm_conn_prop_enum_list drm_connector_enum_list[] = {
+ { DRM_MODE_CONNECTOR_Unknown, "Unknown" },
+ { DRM_MODE_CONNECTOR_VGA, "VGA" },
+ { DRM_MODE_CONNECTOR_DVII, "DVI-I" },
+ { DRM_MODE_CONNECTOR_DVID, "DVI-D" },
+ { DRM_MODE_CONNECTOR_DVIA, "DVI-A" },
+ { DRM_MODE_CONNECTOR_Composite, "Composite" },
+ { DRM_MODE_CONNECTOR_SVIDEO, "SVIDEO" },
+ { DRM_MODE_CONNECTOR_LVDS, "LVDS" },
+ { DRM_MODE_CONNECTOR_Component, "Component" },
+ { DRM_MODE_CONNECTOR_9PinDIN, "DIN" },
+ { DRM_MODE_CONNECTOR_DisplayPort, "DP" },
+ { DRM_MODE_CONNECTOR_HDMIA, "HDMI-A" },
+ { DRM_MODE_CONNECTOR_HDMIB, "HDMI-B" },
+ { DRM_MODE_CONNECTOR_TV, "TV" },
+ { DRM_MODE_CONNECTOR_eDP, "eDP" },
+ { DRM_MODE_CONNECTOR_VIRTUAL, "Virtual" },
+ { DRM_MODE_CONNECTOR_DSI, "DSI" },
+ { DRM_MODE_CONNECTOR_DPI, "DPI" },
+};
+
+void drm_connector_ida_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
+ ida_init(&drm_connector_enum_list[i].ida);
+}
+
+void drm_connector_ida_destroy(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(drm_connector_enum_list); i++)
+ ida_destroy(&drm_connector_enum_list[i].ida);
+}
+
+/**
+ * drm_connector_get_cmdline_mode - reads the user's cmdline mode
+ * @connector: connector to quwery
+ *
+ * The kernel supports per-connector configration of its consoles through
+ * use of the video= parameter. This function parses that option and
+ * extracts the user's specified mode (or enable/disable status) for a
+ * particular connector. This is typically only used during the early fbdev
+ * setup.
+ */
+static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
+{
+ struct drm_cmdline_mode *mode = &connector->cmdline_mode;
+ char *option = NULL;
+
+ if (fb_get_options(connector->name, &option))
+ return;
+
+ if (!drm_mode_parse_command_line_for_connector(option,
+ connector,
+ mode))
+ return;
+
+ if (mode->force) {
+ const char *s;
+
+ switch (mode->force) {
+ case DRM_FORCE_OFF:
+ s = "OFF";
+ break;
+ case DRM_FORCE_ON_DIGITAL:
+ s = "ON - dig";
+ break;
+ default:
+ case DRM_FORCE_ON:
+ s = "ON";
+ break;
+ }
+
+ DRM_INFO("forcing %s connector %s\n", connector->name, s);
+ connector->force = mode->force;
+ }
+
+ DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
+ connector->name,
+ mode->xres, mode->yres,
+ mode->refresh_specified ? mode->refresh : 60,
+ mode->rb ? " reduced blanking" : "",
+ mode->margins ? " with margins" : "",
+ mode->interlace ? " interlaced" : "");
+}
+
+static void drm_connector_free(struct kref *kref)
+{
+ struct drm_connector *connector =
+ container_of(kref, struct drm_connector, base.refcount);
+ struct drm_device *dev = connector->dev;
+
+ drm_mode_object_unregister(dev, &connector->base);
+ connector->funcs->destroy(connector);
+}
+
+/**
+ * drm_connector_init - Init a preallocated connector
+ * @dev: DRM device
+ * @connector: the connector to init
+ * @funcs: callbacks for this connector
+ * @connector_type: user visible type of the connector
+ *
+ * Initialises a preallocated connector. Connectors should be
+ * subclassed as part of driver connector objects.
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_connector_init(struct drm_device *dev,
+ struct drm_connector *connector,
+ const struct drm_connector_funcs *funcs,
+ int connector_type)
+{
+ struct drm_mode_config *config = &dev->mode_config;
+ int ret;
+ struct ida *connector_ida =
+ &drm_connector_enum_list[connector_type].ida;
+
+ drm_modeset_lock_all(dev);
+
+ ret = drm_mode_object_get_reg(dev, &connector->base,
+ DRM_MODE_OBJECT_CONNECTOR,
+ false, drm_connector_free);
+ if (ret)
+ goto out_unlock;
+
+ connector->base.properties = &connector->properties;
+ connector->dev = dev;
+ connector->funcs = funcs;
+
+ ret = ida_simple_get(&config->connector_ida, 0, 0, GFP_KERNEL);
+ if (ret < 0)
+ goto out_put;
+ connector->index = ret;
+ ret = 0;
+
+ connector->connector_type = connector_type;
+ connector->connector_type_id =
+ ida_simple_get(connector_ida, 1, 0, GFP_KERNEL);
+ if (connector->connector_type_id < 0) {
+ ret = connector->connector_type_id;
+ goto out_put_id;
+ }
+ connector->name =
+ kasprintf(GFP_KERNEL, "%s-%d",
+ drm_connector_enum_list[connector_type].name,
+ connector->connector_type_id);
+ if (!connector->name) {
+ ret = -ENOMEM;
+ goto out_put_type_id;
+ }
+
+ INIT_LIST_HEAD(&connector->probed_modes);
+ INIT_LIST_HEAD(&connector->modes);
+ connector->edid_blob_ptr = NULL;
+ connector->status = connector_status_unknown;
+
+ drm_connector_get_cmdline_mode(connector);
+
+ /* We should add connectors at the end to avoid upsetting the connector
+ * index too much. */
+ list_add_tail(&connector->head, &config->connector_list);
+ config->num_connector++;
+
+ if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL)
+ drm_object_attach_property(&connector->base,
+ config->edid_property,
+ 0);
+
+ drm_object_attach_property(&connector->base,
+ config->dpms_property, 0);
+
+ if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
+ drm_object_attach_property(&connector->base, config->prop_crtc_id, 0);
+ }
+
+ connector->debugfs_entry = NULL;
+out_put_type_id:
+ if (ret)
+ ida_remove(connector_ida, connector->connector_type_id);
+out_put_id:
+ if (ret)
+ ida_remove(&config->connector_ida, connector->index);
+out_put:
+ if (ret)
+ drm_mode_object_unregister(dev, &connector->base);
+
+out_unlock:
+ drm_modeset_unlock_all(dev);
+
+ return ret;
+}
+EXPORT_SYMBOL(drm_connector_init);
+
+/**
+ * drm_mode_connector_attach_encoder - attach a connector to an encoder
+ * @connector: connector to attach
+ * @encoder: encoder to attach @connector to
+ *
+ * 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.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_connector_attach_encoder(struct drm_connector *connector,
+ struct drm_encoder *encoder)
+{
+ int i;
+
+ /*
+ * 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;
+
+ for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
+ if (connector->encoder_ids[i] == 0) {
+ connector->encoder_ids[i] = encoder->base.id;
+ return 0;
+ }
+ }
+ return -ENOMEM;
+}
+EXPORT_SYMBOL(drm_mode_connector_attach_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->registered))
+ drm_connector_unregister(connector);
+
+ 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_remove(&drm_connector_enum_list[connector->connector_type].ida,
+ connector->connector_type_id);
+
+ ida_remove(&dev->mode_config.connector_ida,
+ connector->index);
+
+ kfree(connector->display_info.bus_formats);
+ drm_mode_object_unregister(dev, &connector->base);
+ kfree(connector->name);
+ connector->name = NULL;
+ list_del(&connector->head);
+ dev->mode_config.num_connector--;
+
+ 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);
+
+ memset(connector, 0, sizeof(*connector));
+}
+EXPORT_SYMBOL(drm_connector_cleanup);
+
+/**
+ * drm_connector_register - register a connector
+ * @connector: the connector to register
+ *
+ * Register userspace interfaces for a connector
+ *
+ * Returns:
+ * Zero on success, error code on failure.
+ */
+int drm_connector_register(struct drm_connector *connector)
+{
+ int ret;
+
+ if (connector->registered)
+ return 0;
+
+ ret = drm_sysfs_connector_add(connector);
+ if (ret)
+ return ret;
+
+ ret = drm_debugfs_connector_add(connector);
+ if (ret) {
+ goto err_sysfs;
+ }
+
+ 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->registered = true;
+ return 0;
+
+err_debugfs:
+ drm_debugfs_connector_remove(connector);
+err_sysfs:
+ drm_sysfs_connector_remove(connector);
+ return ret;
+}
+EXPORT_SYMBOL(drm_connector_register);
+
+/**
+ * drm_connector_unregister - unregister a connector
+ * @connector: the connector to unregister
+ *
+ * Unregister userspace interfaces for a connector
+ */
+void drm_connector_unregister(struct drm_connector *connector)
+{
+ if (!connector->registered)
+ return;
+
+ if (connector->funcs->early_unregister)
+ connector->funcs->early_unregister(connector);
+
+ drm_sysfs_connector_remove(connector);
+ drm_debugfs_connector_remove(connector);
+
+ connector->registered = false;
+}
+EXPORT_SYMBOL(drm_connector_unregister);
+
+void drm_connector_unregister_all(struct drm_device *dev)
+{
+ struct drm_connector *connector;
+
+ /* FIXME: taking the mode config mutex ends up in a clash with sysfs */
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+ drm_connector_unregister(connector);
+}
+
+int drm_connector_register_all(struct drm_device *dev)
+{
+ struct drm_connector *connector;
+ int ret;
+
+ /* FIXME: taking the mode config mutex ends up in a clash with
+ * fbcon/backlight registration */
+ list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+ ret = drm_connector_register(connector);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ mutex_unlock(&dev->mode_config.mutex);
+ 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.
+ */
+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);
+
+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.
+ */
+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)
+
+/* 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_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 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_subconnector_name,
+ drm_dvi_i_subconnector_enum_list)
+
+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 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_subconnector_name,
+ drm_tv_subconnector_enum_list)
+
+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;
+
+ 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.
+ */
+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_create_tv_properties - 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.
+ */
+int drm_mode_create_tv_properties(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.
+ */
+ 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)
+ goto nomem;
+
+ 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)
+ goto nomem;
+
+ 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)
+ goto nomem;
+
+ 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)
+ goto nomem;
+
+ dev->mode_config.tv_mode_property =
+ drm_property_create(dev, DRM_MODE_PROP_ENUM,
+ "mode", num_modes);
+ if (!dev->mode_config.tv_mode_property)
+ goto nomem;
+
+ for (i = 0; i < num_modes; i++)
+ drm_property_add_enum(dev->mode_config.tv_mode_property, i,
+ 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);
+
+/**
+ * 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.
+ */
+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);
+
+/**
+ * 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);
+
+/**
+ * drm_mode_create_suggested_offset_properties - create suggests offset properties
+ * @dev: DRM device
+ *
+ * Create the the suggested x/y offset property for connectors.
+ */
+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_mode_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_mode_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_mode_connector_set_path_property);
+
+/**
+ * drm_mode_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.
+ *
+ * Returns:
+ * Zero on success, errno on failure.
+ */
+int drm_mode_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_mode_connector_set_tile_property);
+
+/**
+ * drm_mode_connector_update_edid_property - update the edid property of a connector
+ * @connector: drm connector
+ * @edid: new value of the edid property
+ *
+ * This function creates a new blob modeset object and assigns its id to the
+ * connector's edid property.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_connector_update_edid_property(struct drm_connector *connector,
+ const struct edid *edid)
+{
+ struct drm_device *dev = connector->dev;
+ size_t size = 0;
+ int ret;
+
+ /* ignore requests to set edid when overridden */
+ if (connector->override_edid)
+ return 0;
+
+ if (edid)
+ size = EDID_LENGTH * (1 + edid->extensions);
+
+ ret = drm_property_replace_global_blob(dev,
+ &connector->edid_blob_ptr,
+ size,
+ edid,
+ &connector->base,
+ dev->mode_config.edid_property);
+ return ret;
+}
+EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
+
+int drm_mode_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);
+
+ /* store the property value if successful */
+ if (!ret)
+ drm_object_property_set_value(&connector->base, property, value);
+ return ret;
+}
+
+int drm_mode_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 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;
+
+ 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;
+ int i;
+ struct drm_mode_modeinfo u_mode;
+ struct drm_mode_modeinfo __user *mode_ptr;
+ uint32_t __user *encoder_ptr;
+
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -EINVAL;
+
+ memset(&u_mode, 0, sizeof(struct drm_mode_modeinfo));
+
+ mutex_lock(&dev->mode_config.mutex);
+
+ connector = drm_connector_lookup(dev, out_resp->connector_id);
+ if (!connector) {
+ ret = -ENOENT;
+ goto out_unlock;
+ }
+
+ for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
+ if (connector->encoder_ids[i] != 0)
+ encoders_count++;
+
+ if (out_resp->count_modes == 0) {
+ connector->funcs->fill_modes(connector,
+ dev->mode_config.max_width,
+ dev->mode_config.max_height);
+ }
+
+ /* delayed so we get modes regardless of pre-fill_modes state */
+ list_for_each_entry(mode, &connector->modes, head)
+ if (drm_mode_expose_to_userspace(mode, file_priv))
+ mode_count++;
+
+ out_resp->connector_id = connector->base.id;
+ out_resp->connector_type = connector->connector_type;
+ out_resp->connector_type_id = connector->connector_type_id;
+ 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;
+
+ 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;
+
+ /*
+ * 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 (!drm_mode_expose_to_userspace(mode, file_priv))
+ continue;
+
+ drm_mode_convert_to_umode(&u_mode, mode);
+ if (copy_to_user(mode_ptr + copied,
+ &u_mode, sizeof(u_mode))) {
+ ret = -EFAULT;
+ goto out;
+ }
+ copied++;
+ }
+ }
+ out_resp->count_modes = mode_count;
+
+ 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);
+ if (ret)
+ goto out;
+
+ if ((out_resp->count_encoders >= encoders_count) && encoders_count) {
+ copied = 0;
+ encoder_ptr = (uint32_t __user *)(unsigned long)(out_resp->encoders_ptr);
+ for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
+ if (connector->encoder_ids[i] != 0) {
+ if (put_user(connector->encoder_ids[i],
+ encoder_ptr + copied)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ copied++;
+ }
+ }
+ }
+ out_resp->count_encoders = encoders_count;
+
+out:
+ drm_modeset_unlock(&dev->mode_config.connection_mutex);
+
+ drm_connector_unreference(connector);
+out_unlock:
+ mutex_unlock(&dev->mode_config.mutex);
+
+ return ret;
+}
+
