^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Copyright (c) 2016 Intel Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Permission to use, copy, modify, distribute, and sell this software and its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * documentation for any purpose is hereby granted without fee, provided that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * the above copyright notice appear in all copies and that both that copyright
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * notice and this permission notice appear in supporting documentation, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * that the name of the copyright holders not be used in advertising or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * publicity pertaining to distribution of the software without specific,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * written prior permission. The copyright holders make no representations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * about the suitability of this software for any purpose. It is provided "as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * is" without express or implied warranty.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * OF THIS SOFTWARE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <drm/drm_crtc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <drm/drm_drv.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <drm/drm_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <drm/drm_framebuffer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <drm/drm_property.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include "drm_crtc_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * DOC: overview
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * Properties as represented by &drm_property are used to extend the modeset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * interface exposed to userspace. For the atomic modeset IOCTL properties are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * even the only way to transport metadata about the desired new modeset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * configuration from userspace to the kernel. Properties have a well-defined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * value range, which is enforced by the drm core. See the documentation of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * flags member of &struct drm_property for an overview of the different
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * property types and ranges.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * Properties don't store the current value directly, but need to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * instatiated by attaching them to a &drm_mode_object with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * drm_object_attach_property().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * Property values are only 64bit. To support bigger piles of data (like gamma
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) * tables, color correction matrices or large structures) a property can instead
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * point at a &drm_property_blob with that additional data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * Properties are defined by their symbolic name, userspace must keep a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * per-object mapping from those names to the property ID used in the atomic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * IOCTL and in the get/set property IOCTL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static bool drm_property_flags_valid(u32 flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) u32 legacy_type = flags & DRM_MODE_PROP_LEGACY_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u32 ext_type = flags & DRM_MODE_PROP_EXTENDED_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /* Reject undefined/deprecated flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (flags & ~(DRM_MODE_PROP_LEGACY_TYPE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) DRM_MODE_PROP_EXTENDED_TYPE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) DRM_MODE_PROP_IMMUTABLE |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) DRM_MODE_PROP_ATOMIC))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* We want either a legacy type or an extended type, but not both */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (!legacy_type == !ext_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) /* Only one legacy type at a time please */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (legacy_type && !is_power_of_2(legacy_type))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * drm_property_create - create a new property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * @flags: flags specifying the property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @name: name of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * @num_values: number of pre-defined values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * This creates a new generic drm property which can then be attached to a drm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * object with drm_object_attach_property(). The returned property object must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * be freed with drm_property_destroy(), which is done automatically when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * calling drm_mode_config_cleanup().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * A pointer to the newly created property on success, NULL on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct drm_property *drm_property_create(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) u32 flags, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) int num_values)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct drm_property *property = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (WARN_ON(!drm_property_flags_valid(flags)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (WARN_ON(strlen(name) >= DRM_PROP_NAME_LEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) property = kzalloc(sizeof(struct drm_property), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (!property)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) property->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (num_values) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) property->values = kcalloc(num_values, sizeof(uint64_t),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (!property->values)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) ret = drm_mode_object_add(dev, &property->base, DRM_MODE_OBJECT_PROPERTY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) property->flags = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) property->num_values = num_values;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) INIT_LIST_HEAD(&property->enum_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) strncpy(property->name, name, DRM_PROP_NAME_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) property->name[DRM_PROP_NAME_LEN-1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) list_add_tail(&property->head, &dev->mode_config.property_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) kfree(property->values);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) kfree(property);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) EXPORT_SYMBOL(drm_property_create);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * drm_property_create_enum - create a new enumeration property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * @flags: flags specifying the property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * @name: name of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * @props: enumeration lists with property values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * @num_values: number of pre-defined values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * This creates a new generic drm property which can then be attached to a drm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * object with drm_object_attach_property(). The returned property object must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * be freed with drm_property_destroy(), which is done automatically when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * calling drm_mode_config_cleanup().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * Userspace is only allowed to set one of the predefined values for enumeration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * properties.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * A pointer to the newly created property on success, NULL on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct drm_property *drm_property_create_enum(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) u32 flags, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) const struct drm_prop_enum_list *props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int num_values)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) struct drm_property *property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) flags |= DRM_MODE_PROP_ENUM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) property = drm_property_create(dev, flags, name, num_values);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) if (!property)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) for (i = 0; i < num_values; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) ret = drm_property_add_enum(property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) props[i].type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) props[i].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) drm_property_destroy(dev, property);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) EXPORT_SYMBOL(drm_property_create_enum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * drm_property_create_bitmask - create a new bitmask property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * @flags: flags specifying the property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * @name: name of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * @props: enumeration lists with property bitflags
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) * @num_props: size of the @props array
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * @supported_bits: bitmask of all supported enumeration values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) * This creates a new bitmask drm property which can then be attached to a drm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * object with drm_object_attach_property(). The returned property object must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * be freed with drm_property_destroy(), which is done automatically when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * calling drm_mode_config_cleanup().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * Compared to plain enumeration properties userspace is allowed to set any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * or'ed together combination of the predefined property bitflag values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * A pointer to the newly created property on success, NULL on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct drm_property *drm_property_create_bitmask(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) u32 flags, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) const struct drm_prop_enum_list *props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) int num_props,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) uint64_t supported_bits)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct drm_property *property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) int i, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) int num_values = hweight64(supported_bits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) flags |= DRM_MODE_PROP_BITMASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) property = drm_property_create(dev, flags, name, num_values);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) if (!property)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) for (i = 0; i < num_props; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) if (!(supported_bits & (1ULL << props[i].type)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ret = drm_property_add_enum(property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) props[i].type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) props[i].name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) drm_property_destroy(dev, property);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) return property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) EXPORT_SYMBOL(drm_property_create_bitmask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static struct drm_property *property_create_range(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) u32 flags, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) uint64_t min, uint64_t max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct drm_property *property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) property = drm_property_create(dev, flags, name, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) if (!property)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) property->values[0] = min;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) property->values[1] = max;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) return property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * drm_property_create_range - create a new unsigned ranged property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * @flags: flags specifying the property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * @name: name of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * @min: minimum value of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * @max: maximum value of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * This creates a new generic drm property which can then be attached to a drm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * object with drm_object_attach_property(). The returned property object must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * be freed with drm_property_destroy(), which is done automatically when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * calling drm_mode_config_cleanup().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * Userspace is allowed to set any unsigned integer value in the (min, max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * range inclusive.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * A pointer to the newly created property on success, NULL on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct drm_property *drm_property_create_range(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) u32 flags, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) uint64_t min, uint64_t max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) return property_create_range(dev, DRM_MODE_PROP_RANGE | flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) name, min, max);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) EXPORT_SYMBOL(drm_property_create_range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * drm_property_create_signed_range - create a new signed ranged property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * @flags: flags specifying the property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * @name: name of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * @min: minimum value of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) * @max: maximum value of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) * This creates a new generic drm property which can then be attached to a drm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) * object with drm_object_attach_property(). The returned property object must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * be freed with drm_property_destroy(), which is done automatically when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * calling drm_mode_config_cleanup().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * Userspace is allowed to set any signed integer value in the (min, max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * range inclusive.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * A pointer to the newly created property on success, NULL on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) struct drm_property *drm_property_create_signed_range(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) u32 flags, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) int64_t min, int64_t max)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return property_create_range(dev, DRM_MODE_PROP_SIGNED_RANGE | flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) name, I642U64(min), I642U64(max));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) EXPORT_SYMBOL(drm_property_create_signed_range);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) * drm_property_create_object - create a new object property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * @flags: flags specifying the property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * @name: name of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * @type: object type from DRM_MODE_OBJECT_* defines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) * This creates a new generic drm property which can then be attached to a drm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) * object with drm_object_attach_property(). The returned property object must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) * be freed with drm_property_destroy(), which is done automatically when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) * calling drm_mode_config_cleanup().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * Userspace is only allowed to set this to any property value of the given
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) * @type. Only useful for atomic properties, which is enforced.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * A pointer to the newly created property on success, NULL on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct drm_property *drm_property_create_object(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) u32 flags, const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) uint32_t type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) struct drm_property *property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) flags |= DRM_MODE_PROP_OBJECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (WARN_ON(!(flags & DRM_MODE_PROP_ATOMIC)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) property = drm_property_create(dev, flags, name, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (!property)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) property->values[0] = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) return property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) EXPORT_SYMBOL(drm_property_create_object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) * drm_property_create_bool - create a new boolean property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * @flags: flags specifying the property type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) * @name: name of the property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) * This creates a new generic drm property which can then be attached to a drm
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) * object with drm_object_attach_property(). The returned property object must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) * be freed with drm_property_destroy(), which is done automatically when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) * calling drm_mode_config_cleanup().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) * This is implemented as a ranged property with only {0, 1} as valid values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) * A pointer to the newly created property on success, NULL on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) struct drm_property *drm_property_create_bool(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) u32 flags, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) return drm_property_create_range(dev, flags, name, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) EXPORT_SYMBOL(drm_property_create_bool);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) * drm_property_add_enum - add a possible value to an enumeration property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * @property: enumeration property to change
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * @value: value of the new enumeration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) * @name: symbolic name of the new enumeration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) * This functions adds enumerations to a property.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) * It's use is deprecated, drivers should use one of the more specific helpers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) * to directly create the property with all enumerations already attached.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * Zero on success, error code on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) int drm_property_add_enum(struct drm_property *property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) uint64_t value, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) struct drm_property_enum *prop_enum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) int index = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (WARN_ON(strlen(name) >= DRM_PROP_NAME_LEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) if (WARN_ON(!drm_property_type_is(property, DRM_MODE_PROP_ENUM) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) !drm_property_type_is(property, DRM_MODE_PROP_BITMASK)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * Bitmask enum properties have the additional constraint of values
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * from 0 to 63
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if (WARN_ON(drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) value > 63))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) list_for_each_entry(prop_enum, &property->enum_list, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (WARN_ON(prop_enum->value == value))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) index++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (WARN_ON(index >= property->num_values))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) prop_enum = kzalloc(sizeof(struct drm_property_enum), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) if (!prop_enum)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) strncpy(prop_enum->name, name, DRM_PROP_NAME_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) prop_enum->name[DRM_PROP_NAME_LEN-1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) prop_enum->value = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) property->values[index] = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) list_add_tail(&prop_enum->head, &property->enum_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) EXPORT_SYMBOL(drm_property_add_enum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) * drm_property_destroy - destroy a drm property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) * @property: property to destry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) * This function frees a property including any attached resources like
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) * enumeration values.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) void drm_property_destroy(struct drm_device *dev, struct drm_property *property)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) struct drm_property_enum *prop_enum, *pt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) list_for_each_entry_safe(prop_enum, pt, &property->enum_list, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) list_del(&prop_enum->head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) kfree(prop_enum);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if (property->num_values)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) kfree(property->values);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) drm_mode_object_unregister(dev, &property->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) list_del(&property->head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) kfree(property);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) EXPORT_SYMBOL(drm_property_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) int drm_mode_getproperty_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) struct drm_mode_get_property *out_resp = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) struct drm_property *property;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) int enum_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) int value_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) int i, copied;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) struct drm_property_enum *prop_enum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) struct drm_mode_property_enum __user *enum_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) uint64_t __user *values_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) property = drm_property_find(dev, file_priv, out_resp->prop_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (!property)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) strncpy(out_resp->name, property->name, DRM_PROP_NAME_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) out_resp->name[DRM_PROP_NAME_LEN-1] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) out_resp->flags = property->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) value_count = property->num_values;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) values_ptr = u64_to_user_ptr(out_resp->values_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) for (i = 0; i < value_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (i < out_resp->count_values &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) put_user(property->values[i], values_ptr + i)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) out_resp->count_values = value_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) copied = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) enum_ptr = u64_to_user_ptr(out_resp->enum_blob_ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (drm_property_type_is(property, DRM_MODE_PROP_ENUM) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) list_for_each_entry(prop_enum, &property->enum_list, head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) enum_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (out_resp->count_enum_blobs < enum_count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (copy_to_user(&enum_ptr[copied].value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) &prop_enum->value, sizeof(uint64_t)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (copy_to_user(&enum_ptr[copied].name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) &prop_enum->name, DRM_PROP_NAME_LEN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) copied++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) out_resp->count_enum_blobs = enum_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * NOTE: The idea seems to have been to use this to read all the blob
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * property values. But nothing ever added them to the corresponding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * list, userspace always used the special-purpose get_blob ioctl to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * read the value for a blob property. It also doesn't make a lot of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * sense to return values here when everything else is just metadata for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) * the property itself.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) out_resp->count_enum_blobs = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) static void drm_property_free_blob(struct kref *kref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) struct drm_property_blob *blob =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) container_of(kref, struct drm_property_blob, base.refcount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) mutex_lock(&blob->dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) list_del(&blob->head_global);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) mutex_unlock(&blob->dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) drm_mode_object_unregister(blob->dev, &blob->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) kvfree(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * drm_property_create_blob - Create new blob property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * @dev: DRM device to create property for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) * @length: Length to allocate for blob data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) * @data: If specified, copies data into blob
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * Creates a new blob property for a specified DRM device, optionally
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * copying data. Note that blob properties are meant to be invariant, hence the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) * data must be filled out before the blob is used as the value of any property.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) * New blob property with a single reference on success, or an ERR_PTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) * value on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) struct drm_property_blob *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) drm_property_create_blob(struct drm_device *dev, size_t length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) struct drm_property_blob *blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) if (!length || length > INT_MAX - sizeof(struct drm_property_blob))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) blob = kvzalloc(sizeof(struct drm_property_blob)+length, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) if (!blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) /* This must be explicitly initialised, so we can safely call list_del
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) * on it in the removal handler, even if it isn't in a file list. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) INIT_LIST_HEAD(&blob->head_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) blob->data = (void *)blob + sizeof(*blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) blob->length = length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) blob->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) if (data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) memcpy(blob->data, data, length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) ret = __drm_mode_object_add(dev, &blob->base, DRM_MODE_OBJECT_BLOB,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) true, drm_property_free_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) kvfree(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) mutex_lock(&dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) list_add_tail(&blob->head_global,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) &dev->mode_config.property_blob_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) mutex_unlock(&dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) return blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) EXPORT_SYMBOL(drm_property_create_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) * drm_property_blob_put - release a blob property reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) * @blob: DRM blob property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) * Releases a reference to a blob property. May free the object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) void drm_property_blob_put(struct drm_property_blob *blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) if (!blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) drm_mode_object_put(&blob->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) EXPORT_SYMBOL(drm_property_blob_put);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) void drm_property_destroy_user_blobs(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) struct drm_property_blob *blob, *bt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) * When the file gets released that means no one else can access the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) * blob list any more, so no need to grab dev->blob_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) list_for_each_entry_safe(blob, bt, &file_priv->blobs, head_file) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) list_del_init(&blob->head_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) drm_property_blob_put(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) * drm_property_blob_get - acquire blob property reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * @blob: DRM blob property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) * Acquires a reference to an existing blob property. Returns @blob, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * allows this to be used as a shorthand in assignments.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) struct drm_property_blob *drm_property_blob_get(struct drm_property_blob *blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) drm_mode_object_get(&blob->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) return blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) EXPORT_SYMBOL(drm_property_blob_get);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) * drm_property_lookup_blob - look up a blob property and take a reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) * @id: id of the blob property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) * If successful, this takes an additional reference to the blob property.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) * callers need to make sure to eventually unreference the returned property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) * again, using drm_property_blob_put().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) * Return:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) * NULL on failure, pointer to the blob on success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) uint32_t id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) struct drm_mode_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) struct drm_property_blob *blob = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) obj = __drm_mode_object_find(dev, NULL, id, DRM_MODE_OBJECT_BLOB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) if (obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) blob = obj_to_blob(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) return blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) EXPORT_SYMBOL(drm_property_lookup_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) * drm_property_replace_global_blob - replace existing blob property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) * @dev: drm device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) * @replace: location of blob property pointer to be replaced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) * @length: length of data for new blob, or 0 for no data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) * @data: content for new blob, or NULL for no data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) * @obj_holds_id: optional object for property holding blob ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) * @prop_holds_id: optional property holding blob ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) * @return 0 on success or error on failure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) * This function will replace a global property in the blob list, optionally
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) * updating a property which holds the ID of that property.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * If length is 0 or data is NULL, no new blob will be created, and the holding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) * property, if specified, will be set to 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * Access to the replace pointer is assumed to be protected by the caller, e.g.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * by holding the relevant modesetting object lock for its parent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) * For example, a drm_connector has a 'PATH' property, which contains the ID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) * of a blob property with the value of the MST path information. Calling this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * function with replace pointing to the connector's path_blob_ptr, length and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * data set for the new path information, obj_holds_id set to the connector's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * base object, and prop_holds_id set to the path property name, will perform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * a completely atomic update. The access to path_blob_ptr is protected by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * caller holding a lock on the connector.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) int drm_property_replace_global_blob(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) struct drm_property_blob **replace,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) size_t length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) const void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) struct drm_mode_object *obj_holds_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) struct drm_property *prop_holds_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) struct drm_property_blob *new_blob = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) struct drm_property_blob *old_blob = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) WARN_ON(replace == NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) old_blob = *replace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) if (length && data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) new_blob = drm_property_create_blob(dev, length, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) if (IS_ERR(new_blob))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) return PTR_ERR(new_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) if (obj_holds_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) ret = drm_object_property_set_value(obj_holds_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) prop_holds_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) new_blob ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) new_blob->base.id : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (ret != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) goto err_created;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) drm_property_blob_put(old_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) *replace = new_blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) err_created:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) drm_property_blob_put(new_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) EXPORT_SYMBOL(drm_property_replace_global_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) * drm_property_replace_blob - replace a blob property
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) * @blob: a pointer to the member blob to be replaced
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) * @new_blob: the new blob to replace with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) * Return: true if the blob was in fact replaced.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) bool drm_property_replace_blob(struct drm_property_blob **blob,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) struct drm_property_blob *new_blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) struct drm_property_blob *old_blob = *blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) if (old_blob == new_blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) drm_property_blob_put(old_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) if (new_blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) drm_property_blob_get(new_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) *blob = new_blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) EXPORT_SYMBOL(drm_property_replace_blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) int drm_mode_getblob_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) struct drm_mode_get_blob *out_resp = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) struct drm_property_blob *blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) blob = drm_property_lookup_blob(dev, out_resp->blob_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) if (!blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) if (out_resp->length == blob->length) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) if (copy_to_user(u64_to_user_ptr(out_resp->data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) blob->data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) blob->length)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) goto unref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) out_resp->length = blob->length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) unref:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) drm_property_blob_put(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) int drm_mode_createblob_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) struct drm_mode_create_blob *out_resp = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) struct drm_property_blob *blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) blob = drm_property_create_blob(dev, out_resp->length, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) if (IS_ERR(blob))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) return PTR_ERR(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) if (copy_from_user(blob->data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) u64_to_user_ptr(out_resp->data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) out_resp->length)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) goto out_blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) /* Dropping the lock between create_blob and our access here is safe
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) * as only the same file_priv can remove the blob; at this point, it is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) * not associated with any file_priv. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) mutex_lock(&dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) out_resp->blob_id = blob->base.id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) list_add_tail(&blob->head_file, &file_priv->blobs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) mutex_unlock(&dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) out_blob:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) drm_property_blob_put(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) int drm_mode_destroyblob_ioctl(struct drm_device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) void *data, struct drm_file *file_priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) struct drm_mode_destroy_blob *out_resp = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) struct drm_property_blob *blob = NULL, *bt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) if (!drm_core_check_feature(dev, DRIVER_MODESET))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) return -EOPNOTSUPP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) blob = drm_property_lookup_blob(dev, out_resp->blob_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (!blob)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) mutex_lock(&dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) /* Ensure the property was actually created by this user. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) list_for_each_entry(bt, &file_priv->blobs, head_file) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) if (bt == blob) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) if (!found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) ret = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) /* We must drop head_file here, because we may not be the last
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * reference on the blob. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) list_del_init(&blob->head_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) mutex_unlock(&dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) /* One reference from lookup, and one from the filp. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) drm_property_blob_put(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) drm_property_blob_put(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) mutex_unlock(&dev->mode_config.blob_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) drm_property_blob_put(blob);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) /* Some properties could refer to dynamic refcnt'd objects, or things that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) * need special locking to handle lifetime issues (ie. to ensure the prop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) * value doesn't become invalid part way through the property update due to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) * race). The value returned by reference via 'obj' should be passed back
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) * to drm_property_change_valid_put() after the property is set (and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) * object to which the property is attached has a chance to take its own
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) * reference).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) bool drm_property_change_valid_get(struct drm_property *property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) uint64_t value, struct drm_mode_object **ref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) if (property->flags & DRM_MODE_PROP_IMMUTABLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) *ref = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) if (drm_property_type_is(property, DRM_MODE_PROP_RANGE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) if (value < property->values[0] || value > property->values[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) } else if (drm_property_type_is(property, DRM_MODE_PROP_SIGNED_RANGE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) int64_t svalue = U642I64(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) if (svalue < U642I64(property->values[0]) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) svalue > U642I64(property->values[1]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) } else if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) uint64_t valid_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) for (i = 0; i < property->num_values; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) valid_mask |= (1ULL << property->values[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) return !(value & ~valid_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) struct drm_property_blob *blob;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) if (value == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) blob = drm_property_lookup_blob(property->dev, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) if (blob) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) *ref = &blob->base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) /* a zero value for an object property translates to null: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) if (value == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) *ref = __drm_mode_object_find(property->dev, NULL, value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) property->values[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) return *ref != NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) for (i = 0; i < property->num_values; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) if (property->values[i] == value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) void drm_property_change_valid_put(struct drm_property *property,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) struct drm_mode_object *ref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) if (!ref)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) drm_mode_object_put(ref);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) drm_property_blob_put(obj_to_blob(ref));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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