1c0e09200SDave Airlie 2c0e09200SDave Airlie /* 3c0e09200SDave Airlie * drm_sysfs.c - Modifications to drm_sysfs_class.c to support 4c0e09200SDave Airlie * extra sysfs attribute from DRM. Normal drm_sysfs_class 5c0e09200SDave Airlie * does not allow adding attributes. 6c0e09200SDave Airlie * 7c0e09200SDave Airlie * Copyright (c) 2004 Jon Smirl <jonsmirl@gmail.com> 8c0e09200SDave Airlie * Copyright (c) 2003-2004 Greg Kroah-Hartman <greg@kroah.com> 9c0e09200SDave Airlie * Copyright (c) 2003-2004 IBM Corp. 10c0e09200SDave Airlie * 11c0e09200SDave Airlie * This file is released under the GPLv2 12c0e09200SDave Airlie * 13c0e09200SDave Airlie */ 14c0e09200SDave Airlie 15c0e09200SDave Airlie #include <linux/device.h> 16c0e09200SDave Airlie #include <linux/kdev_t.h> 17c0e09200SDave Airlie #include <linux/err.h> 18c0e09200SDave Airlie 19c0e09200SDave Airlie #include "drm_core.h" 20c0e09200SDave Airlie #include "drmP.h" 21c0e09200SDave Airlie 22c0e09200SDave Airlie #define to_drm_minor(d) container_of(d, struct drm_minor, kdev) 23f453ba04SDave Airlie #define to_drm_connector(d) container_of(d, struct drm_connector, kdev) 24c0e09200SDave Airlie 25c0e09200SDave Airlie /** 26c0e09200SDave Airlie * drm_sysfs_suspend - DRM class suspend hook 27c0e09200SDave Airlie * @dev: Linux device to suspend 28c0e09200SDave Airlie * @state: power state to enter 29c0e09200SDave Airlie * 30c0e09200SDave Airlie * Just figures out what the actual struct drm_device associated with 31c0e09200SDave Airlie * @dev is and calls its suspend hook, if present. 32c0e09200SDave Airlie */ 33c0e09200SDave Airlie static int drm_sysfs_suspend(struct device *dev, pm_message_t state) 34c0e09200SDave Airlie { 35c0e09200SDave Airlie struct drm_minor *drm_minor = to_drm_minor(dev); 36c0e09200SDave Airlie struct drm_device *drm_dev = drm_minor->dev; 37c0e09200SDave Airlie 38112b715eSKristian Høgsberg if (drm_minor->type == DRM_MINOR_LEGACY && 39112b715eSKristian Høgsberg !drm_core_check_feature(drm_dev, DRIVER_MODESET) && 40112b715eSKristian Høgsberg drm_dev->driver->suspend) 41c0e09200SDave Airlie return drm_dev->driver->suspend(drm_dev, state); 42c0e09200SDave Airlie 43c0e09200SDave Airlie return 0; 44c0e09200SDave Airlie } 45c0e09200SDave Airlie 46c0e09200SDave Airlie /** 47c0e09200SDave Airlie * drm_sysfs_resume - DRM class resume hook 48c0e09200SDave Airlie * @dev: Linux device to resume 49c0e09200SDave Airlie * 50c0e09200SDave Airlie * Just figures out what the actual struct drm_device associated with 51c0e09200SDave Airlie * @dev is and calls its resume hook, if present. 52c0e09200SDave Airlie */ 53c0e09200SDave Airlie static int drm_sysfs_resume(struct device *dev) 54c0e09200SDave Airlie { 55c0e09200SDave Airlie struct drm_minor *drm_minor = to_drm_minor(dev); 56c0e09200SDave Airlie struct drm_device *drm_dev = drm_minor->dev; 57c0e09200SDave Airlie 58112b715eSKristian Høgsberg if (drm_minor->type == DRM_MINOR_LEGACY && 59112b715eSKristian Høgsberg !drm_core_check_feature(drm_dev, DRIVER_MODESET) && 60112b715eSKristian Høgsberg drm_dev->driver->resume) 61c0e09200SDave Airlie return drm_dev->driver->resume(drm_dev); 62c0e09200SDave Airlie 63c0e09200SDave Airlie return 0; 64c0e09200SDave Airlie } 65c0e09200SDave Airlie 66c0e09200SDave Airlie /* Display the version of drm_core. This doesn't work right in current design */ 67c0e09200SDave Airlie static ssize_t version_show(struct class *dev, char *buf) 68c0e09200SDave Airlie { 69c0e09200SDave Airlie return sprintf(buf, "%s %d.%d.%d %s\n", CORE_NAME, CORE_MAJOR, 70c0e09200SDave Airlie CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); 71c0e09200SDave Airlie } 72c0e09200SDave Airlie 73c0e09200SDave Airlie static CLASS_ATTR(version, S_IRUGO, version_show, NULL); 74c0e09200SDave Airlie 75c0e09200SDave Airlie /** 76c0e09200SDave Airlie * drm_sysfs_create - create a struct drm_sysfs_class structure 77c0e09200SDave Airlie * @owner: pointer to the module that is to "own" this struct drm_sysfs_class 78c0e09200SDave Airlie * @name: pointer to a string for the name of this class. 79c0e09200SDave Airlie * 80c0e09200SDave Airlie * This is used to create DRM class pointer that can then be used 81c0e09200SDave Airlie * in calls to drm_sysfs_device_add(). 82c0e09200SDave Airlie * 83c0e09200SDave Airlie * Note, the pointer created here is to be destroyed when finished by making a 84c0e09200SDave Airlie * call to drm_sysfs_destroy(). 85c0e09200SDave Airlie */ 86c0e09200SDave Airlie struct class *drm_sysfs_create(struct module *owner, char *name) 87c0e09200SDave Airlie { 88c0e09200SDave Airlie struct class *class; 89c0e09200SDave Airlie int err; 90c0e09200SDave Airlie 91c0e09200SDave Airlie class = class_create(owner, name); 92c0e09200SDave Airlie if (IS_ERR(class)) { 93c0e09200SDave Airlie err = PTR_ERR(class); 94c0e09200SDave Airlie goto err_out; 95c0e09200SDave Airlie } 96c0e09200SDave Airlie 97c0e09200SDave Airlie class->suspend = drm_sysfs_suspend; 98c0e09200SDave Airlie class->resume = drm_sysfs_resume; 99c0e09200SDave Airlie 100c0e09200SDave Airlie err = class_create_file(class, &class_attr_version); 101c0e09200SDave Airlie if (err) 102c0e09200SDave Airlie goto err_out_class; 103c0e09200SDave Airlie 104c0e09200SDave Airlie return class; 105c0e09200SDave Airlie 106c0e09200SDave Airlie err_out_class: 107c0e09200SDave Airlie class_destroy(class); 108c0e09200SDave Airlie err_out: 109c0e09200SDave Airlie return ERR_PTR(err); 110c0e09200SDave Airlie } 111c0e09200SDave Airlie 112c0e09200SDave Airlie /** 113c0e09200SDave Airlie * drm_sysfs_destroy - destroys DRM class 114c0e09200SDave Airlie * 115c0e09200SDave Airlie * Destroy the DRM device class. 116c0e09200SDave Airlie */ 117c0e09200SDave Airlie void drm_sysfs_destroy(void) 118c0e09200SDave Airlie { 119c0e09200SDave Airlie if ((drm_class == NULL) || (IS_ERR(drm_class))) 120c0e09200SDave Airlie return; 121c0e09200SDave Airlie class_remove_file(drm_class, &class_attr_version); 122c0e09200SDave Airlie class_destroy(drm_class); 123c0e09200SDave Airlie } 124c0e09200SDave Airlie 125c0e09200SDave Airlie /** 126c0e09200SDave Airlie * drm_sysfs_device_release - do nothing 127c0e09200SDave Airlie * @dev: Linux device 128c0e09200SDave Airlie * 129c0e09200SDave Airlie * Normally, this would free the DRM device associated with @dev, along 130c0e09200SDave Airlie * with cleaning up any other stuff. But we do that in the DRM core, so 131c0e09200SDave Airlie * this function can just return and hope that the core does its job. 132c0e09200SDave Airlie */ 133c0e09200SDave Airlie static void drm_sysfs_device_release(struct device *dev) 134c0e09200SDave Airlie { 13577d26dc9SMa Ling memset(dev, 0, sizeof(struct device)); 136c0e09200SDave Airlie return; 137c0e09200SDave Airlie } 138c0e09200SDave Airlie 139f453ba04SDave Airlie /* 140f453ba04SDave Airlie * Connector properties 141f453ba04SDave Airlie */ 142f453ba04SDave Airlie static ssize_t status_show(struct device *device, 143f453ba04SDave Airlie struct device_attribute *attr, 144f453ba04SDave Airlie char *buf) 145f453ba04SDave Airlie { 146f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 147f453ba04SDave Airlie enum drm_connector_status status; 148f453ba04SDave Airlie 149f453ba04SDave Airlie status = connector->funcs->detect(connector); 15075185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", 151f453ba04SDave Airlie drm_get_connector_status_name(status)); 152f453ba04SDave Airlie } 153f453ba04SDave Airlie 154f453ba04SDave Airlie static ssize_t dpms_show(struct device *device, 155f453ba04SDave Airlie struct device_attribute *attr, 156f453ba04SDave Airlie char *buf) 157f453ba04SDave Airlie { 158f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 159f453ba04SDave Airlie struct drm_device *dev = connector->dev; 160f453ba04SDave Airlie uint64_t dpms_status; 161f453ba04SDave Airlie int ret; 162f453ba04SDave Airlie 163f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, 164f453ba04SDave Airlie dev->mode_config.dpms_property, 165f453ba04SDave Airlie &dpms_status); 166f453ba04SDave Airlie if (ret) 167f453ba04SDave Airlie return 0; 168f453ba04SDave Airlie 16975185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", 170f453ba04SDave Airlie drm_get_dpms_name((int)dpms_status)); 171f453ba04SDave Airlie } 172f453ba04SDave Airlie 173f453ba04SDave Airlie static ssize_t enabled_show(struct device *device, 174f453ba04SDave Airlie struct device_attribute *attr, 175f453ba04SDave Airlie char *buf) 176f453ba04SDave Airlie { 177f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 178f453ba04SDave Airlie 17975185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", connector->encoder ? "enabled" : 180f453ba04SDave Airlie "disabled"); 181f453ba04SDave Airlie } 182f453ba04SDave Airlie 183f453ba04SDave Airlie static ssize_t edid_show(struct kobject *kobj, struct bin_attribute *attr, 184f453ba04SDave Airlie char *buf, loff_t off, size_t count) 185f453ba04SDave Airlie { 186f453ba04SDave Airlie struct device *connector_dev = container_of(kobj, struct device, kobj); 187f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(connector_dev); 188f453ba04SDave Airlie unsigned char *edid; 189f453ba04SDave Airlie size_t size; 190f453ba04SDave Airlie 191f453ba04SDave Airlie if (!connector->edid_blob_ptr) 192f453ba04SDave Airlie return 0; 193f453ba04SDave Airlie 194f453ba04SDave Airlie edid = connector->edid_blob_ptr->data; 195f453ba04SDave Airlie size = connector->edid_blob_ptr->length; 196f453ba04SDave Airlie if (!edid) 197f453ba04SDave Airlie return 0; 198f453ba04SDave Airlie 199f453ba04SDave Airlie if (off >= size) 200f453ba04SDave Airlie return 0; 201f453ba04SDave Airlie 202f453ba04SDave Airlie if (off + count > size) 203f453ba04SDave Airlie count = size - off; 204f453ba04SDave Airlie memcpy(buf, edid + off, count); 205f453ba04SDave Airlie 206f453ba04SDave Airlie return count; 207f453ba04SDave Airlie } 208f453ba04SDave Airlie 209f453ba04SDave Airlie static ssize_t modes_show(struct device *device, 210f453ba04SDave Airlie struct device_attribute *attr, 211f453ba04SDave Airlie char *buf) 212f453ba04SDave Airlie { 213f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 214f453ba04SDave Airlie struct drm_display_mode *mode; 215f453ba04SDave Airlie int written = 0; 216f453ba04SDave Airlie 217f453ba04SDave Airlie list_for_each_entry(mode, &connector->modes, head) { 218f453ba04SDave Airlie written += snprintf(buf + written, PAGE_SIZE - written, "%s\n", 219f453ba04SDave Airlie mode->name); 220f453ba04SDave Airlie } 221f453ba04SDave Airlie 222f453ba04SDave Airlie return written; 223f453ba04SDave Airlie } 224f453ba04SDave Airlie 225f453ba04SDave Airlie static ssize_t subconnector_show(struct device *device, 226f453ba04SDave Airlie struct device_attribute *attr, 227f453ba04SDave Airlie char *buf) 228f453ba04SDave Airlie { 229f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 230f453ba04SDave Airlie struct drm_device *dev = connector->dev; 231f453ba04SDave Airlie struct drm_property *prop = NULL; 232f453ba04SDave Airlie uint64_t subconnector; 233f453ba04SDave Airlie int is_tv = 0; 234f453ba04SDave Airlie int ret; 235f453ba04SDave Airlie 236f453ba04SDave Airlie switch (connector->connector_type) { 237f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 238f453ba04SDave Airlie prop = dev->mode_config.dvi_i_subconnector_property; 239f453ba04SDave Airlie break; 240f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 241f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 242f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 243f453ba04SDave Airlie prop = dev->mode_config.tv_subconnector_property; 244f453ba04SDave Airlie is_tv = 1; 245f453ba04SDave Airlie break; 246f453ba04SDave Airlie default: 247f453ba04SDave Airlie DRM_ERROR("Wrong connector type for this property\n"); 248f453ba04SDave Airlie return 0; 249f453ba04SDave Airlie } 250f453ba04SDave Airlie 251f453ba04SDave Airlie if (!prop) { 252f453ba04SDave Airlie DRM_ERROR("Unable to find subconnector property\n"); 253f453ba04SDave Airlie return 0; 254f453ba04SDave Airlie } 255f453ba04SDave Airlie 256f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, prop, &subconnector); 257f453ba04SDave Airlie if (ret) 258f453ba04SDave Airlie return 0; 259f453ba04SDave Airlie 260f453ba04SDave Airlie return snprintf(buf, PAGE_SIZE, "%s", is_tv ? 261f453ba04SDave Airlie drm_get_tv_subconnector_name((int)subconnector) : 262f453ba04SDave Airlie drm_get_dvi_i_subconnector_name((int)subconnector)); 263f453ba04SDave Airlie } 264f453ba04SDave Airlie 265f453ba04SDave Airlie static ssize_t select_subconnector_show(struct device *device, 266f453ba04SDave Airlie struct device_attribute *attr, 267f453ba04SDave Airlie char *buf) 268f453ba04SDave Airlie { 269f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 270f453ba04SDave Airlie struct drm_device *dev = connector->dev; 271f453ba04SDave Airlie struct drm_property *prop = NULL; 272f453ba04SDave Airlie uint64_t subconnector; 273f453ba04SDave Airlie int is_tv = 0; 274f453ba04SDave Airlie int ret; 275f453ba04SDave Airlie 276f453ba04SDave Airlie switch (connector->connector_type) { 277f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 278f453ba04SDave Airlie prop = dev->mode_config.dvi_i_select_subconnector_property; 279f453ba04SDave Airlie break; 280f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 281f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 282f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 283f453ba04SDave Airlie prop = dev->mode_config.tv_select_subconnector_property; 284f453ba04SDave Airlie is_tv = 1; 285f453ba04SDave Airlie break; 286f453ba04SDave Airlie default: 287f453ba04SDave Airlie DRM_ERROR("Wrong connector type for this property\n"); 288f453ba04SDave Airlie return 0; 289f453ba04SDave Airlie } 290f453ba04SDave Airlie 291f453ba04SDave Airlie if (!prop) { 292f453ba04SDave Airlie DRM_ERROR("Unable to find select subconnector property\n"); 293f453ba04SDave Airlie return 0; 294f453ba04SDave Airlie } 295f453ba04SDave Airlie 296f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, prop, &subconnector); 297f453ba04SDave Airlie if (ret) 298f453ba04SDave Airlie return 0; 299f453ba04SDave Airlie 300f453ba04SDave Airlie return snprintf(buf, PAGE_SIZE, "%s", is_tv ? 301f453ba04SDave Airlie drm_get_tv_select_name((int)subconnector) : 302f453ba04SDave Airlie drm_get_dvi_i_select_name((int)subconnector)); 303f453ba04SDave Airlie } 304f453ba04SDave Airlie 305f453ba04SDave Airlie static struct device_attribute connector_attrs[] = { 306f453ba04SDave Airlie __ATTR_RO(status), 307f453ba04SDave Airlie __ATTR_RO(enabled), 308f453ba04SDave Airlie __ATTR_RO(dpms), 309f453ba04SDave Airlie __ATTR_RO(modes), 310f453ba04SDave Airlie }; 311f453ba04SDave Airlie 312f453ba04SDave Airlie /* These attributes are for both DVI-I connectors and all types of tv-out. */ 313f453ba04SDave Airlie static struct device_attribute connector_attrs_opt1[] = { 314f453ba04SDave Airlie __ATTR_RO(subconnector), 315f453ba04SDave Airlie __ATTR_RO(select_subconnector), 316f453ba04SDave Airlie }; 317f453ba04SDave Airlie 318f453ba04SDave Airlie static struct bin_attribute edid_attr = { 319f453ba04SDave Airlie .attr.name = "edid", 320e36ebaf4SKeith Packard .attr.mode = 0444, 321f453ba04SDave Airlie .size = 128, 322f453ba04SDave Airlie .read = edid_show, 323f453ba04SDave Airlie }; 324f453ba04SDave Airlie 325f453ba04SDave Airlie /** 326f453ba04SDave Airlie * drm_sysfs_connector_add - add an connector to sysfs 327f453ba04SDave Airlie * @connector: connector to add 328f453ba04SDave Airlie * 329f453ba04SDave Airlie * Create an connector device in sysfs, along with its associated connector 330f453ba04SDave Airlie * properties (so far, connection status, dpms, mode list & edid) and 331f453ba04SDave Airlie * generate a hotplug event so userspace knows there's a new connector 332f453ba04SDave Airlie * available. 333f453ba04SDave Airlie * 334f453ba04SDave Airlie * Note: 335f453ba04SDave Airlie * This routine should only be called *once* for each DRM minor registered. 336f453ba04SDave Airlie * A second call for an already registered device will trigger the BUG_ON 337f453ba04SDave Airlie * below. 338f453ba04SDave Airlie */ 339f453ba04SDave Airlie int drm_sysfs_connector_add(struct drm_connector *connector) 340f453ba04SDave Airlie { 341f453ba04SDave Airlie struct drm_device *dev = connector->dev; 342f453ba04SDave Airlie int ret = 0, i, j; 343f453ba04SDave Airlie 344f453ba04SDave Airlie /* We shouldn't get called more than once for the same connector */ 345f453ba04SDave Airlie BUG_ON(device_is_registered(&connector->kdev)); 346f453ba04SDave Airlie 347f453ba04SDave Airlie connector->kdev.parent = &dev->primary->kdev; 348f453ba04SDave Airlie connector->kdev.class = drm_class; 349f453ba04SDave Airlie connector->kdev.release = drm_sysfs_device_release; 350f453ba04SDave Airlie 351f453ba04SDave Airlie DRM_DEBUG("adding \"%s\" to sysfs\n", 352f453ba04SDave Airlie drm_get_connector_name(connector)); 353f453ba04SDave Airlie 3542ead054cSKay Sievers dev_set_name(&connector->kdev, "card%d-%s", 355f453ba04SDave Airlie dev->primary->index, drm_get_connector_name(connector)); 356f453ba04SDave Airlie ret = device_register(&connector->kdev); 357f453ba04SDave Airlie 358f453ba04SDave Airlie if (ret) { 359f453ba04SDave Airlie DRM_ERROR("failed to register connector device: %d\n", ret); 360f453ba04SDave Airlie goto out; 361f453ba04SDave Airlie } 362f453ba04SDave Airlie 363f453ba04SDave Airlie /* Standard attributes */ 364f453ba04SDave Airlie 365f453ba04SDave Airlie for (i = 0; i < ARRAY_SIZE(connector_attrs); i++) { 366f453ba04SDave Airlie ret = device_create_file(&connector->kdev, &connector_attrs[i]); 367f453ba04SDave Airlie if (ret) 368f453ba04SDave Airlie goto err_out_files; 369f453ba04SDave Airlie } 370f453ba04SDave Airlie 371f453ba04SDave Airlie /* Optional attributes */ 372f453ba04SDave Airlie /* 373f453ba04SDave Airlie * In the long run it maybe a good idea to make one set of 374f453ba04SDave Airlie * optionals per connector type. 375f453ba04SDave Airlie */ 376f453ba04SDave Airlie switch (connector->connector_type) { 377f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 378f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 379f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 380f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 381f453ba04SDave Airlie for (i = 0; i < ARRAY_SIZE(connector_attrs_opt1); i++) { 382f453ba04SDave Airlie ret = device_create_file(&connector->kdev, &connector_attrs_opt1[i]); 383f453ba04SDave Airlie if (ret) 384f453ba04SDave Airlie goto err_out_files; 385f453ba04SDave Airlie } 386f453ba04SDave Airlie break; 387f453ba04SDave Airlie default: 388f453ba04SDave Airlie break; 389f453ba04SDave Airlie } 390f453ba04SDave Airlie 391f453ba04SDave Airlie ret = sysfs_create_bin_file(&connector->kdev.kobj, &edid_attr); 392f453ba04SDave Airlie if (ret) 393f453ba04SDave Airlie goto err_out_files; 394f453ba04SDave Airlie 395f453ba04SDave Airlie /* Let userspace know we have a new connector */ 396f453ba04SDave Airlie drm_sysfs_hotplug_event(dev); 397f453ba04SDave Airlie 398f453ba04SDave Airlie return 0; 399f453ba04SDave Airlie 400f453ba04SDave Airlie err_out_files: 401f453ba04SDave Airlie if (i > 0) 402f453ba04SDave Airlie for (j = 0; j < i; j++) 403f453ba04SDave Airlie device_remove_file(&connector->kdev, 404f453ba04SDave Airlie &connector_attrs[i]); 405f453ba04SDave Airlie device_unregister(&connector->kdev); 406f453ba04SDave Airlie 407f453ba04SDave Airlie out: 408f453ba04SDave Airlie return ret; 409f453ba04SDave Airlie } 410f453ba04SDave Airlie EXPORT_SYMBOL(drm_sysfs_connector_add); 411f453ba04SDave Airlie 412f453ba04SDave Airlie /** 413f453ba04SDave Airlie * drm_sysfs_connector_remove - remove an connector device from sysfs 414f453ba04SDave Airlie * @connector: connector to remove 415f453ba04SDave Airlie * 416f453ba04SDave Airlie * Remove @connector and its associated attributes from sysfs. Note that 417f453ba04SDave Airlie * the device model core will take care of sending the "remove" uevent 418f453ba04SDave Airlie * at this time, so we don't need to do it. 419f453ba04SDave Airlie * 420f453ba04SDave Airlie * Note: 421f453ba04SDave Airlie * This routine should only be called if the connector was previously 422f453ba04SDave Airlie * successfully registered. If @connector hasn't been registered yet, 423f453ba04SDave Airlie * you'll likely see a panic somewhere deep in sysfs code when called. 424f453ba04SDave Airlie */ 425f453ba04SDave Airlie void drm_sysfs_connector_remove(struct drm_connector *connector) 426f453ba04SDave Airlie { 427f453ba04SDave Airlie int i; 428f453ba04SDave Airlie 429f453ba04SDave Airlie DRM_DEBUG("removing \"%s\" from sysfs\n", 430f453ba04SDave Airlie drm_get_connector_name(connector)); 431f453ba04SDave Airlie 432f453ba04SDave Airlie for (i = 0; i < ARRAY_SIZE(connector_attrs); i++) 433f453ba04SDave Airlie device_remove_file(&connector->kdev, &connector_attrs[i]); 434f453ba04SDave Airlie sysfs_remove_bin_file(&connector->kdev.kobj, &edid_attr); 435f453ba04SDave Airlie device_unregister(&connector->kdev); 436f453ba04SDave Airlie } 437f453ba04SDave Airlie EXPORT_SYMBOL(drm_sysfs_connector_remove); 438f453ba04SDave Airlie 439f453ba04SDave Airlie /** 440f453ba04SDave Airlie * drm_sysfs_hotplug_event - generate a DRM uevent 441f453ba04SDave Airlie * @dev: DRM device 442f453ba04SDave Airlie * 443f453ba04SDave Airlie * Send a uevent for the DRM device specified by @dev. Currently we only 444f453ba04SDave Airlie * set HOTPLUG=1 in the uevent environment, but this could be expanded to 445f453ba04SDave Airlie * deal with other types of events. 446f453ba04SDave Airlie */ 447f453ba04SDave Airlie void drm_sysfs_hotplug_event(struct drm_device *dev) 448f453ba04SDave Airlie { 449f453ba04SDave Airlie char *event_string = "HOTPLUG=1"; 450f453ba04SDave Airlie char *envp[] = { event_string, NULL }; 451f453ba04SDave Airlie 452f453ba04SDave Airlie DRM_DEBUG("generating hotplug event\n"); 453f453ba04SDave Airlie 454f453ba04SDave Airlie kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, envp); 455f453ba04SDave Airlie } 4565ca58282SJesse Barnes EXPORT_SYMBOL(drm_sysfs_hotplug_event); 457f453ba04SDave Airlie 458c0e09200SDave Airlie /** 459c0e09200SDave Airlie * drm_sysfs_device_add - adds a class device to sysfs for a character driver 460c0e09200SDave Airlie * @dev: DRM device to be added 461c0e09200SDave Airlie * @head: DRM head in question 462c0e09200SDave Airlie * 463c0e09200SDave Airlie * Add a DRM device to the DRM's device model class. We use @dev's PCI device 464c0e09200SDave Airlie * as the parent for the Linux device, and make sure it has a file containing 465c0e09200SDave Airlie * the driver we're using (for userspace compatibility). 466c0e09200SDave Airlie */ 467c0e09200SDave Airlie int drm_sysfs_device_add(struct drm_minor *minor) 468c0e09200SDave Airlie { 469c0e09200SDave Airlie int err; 470c0e09200SDave Airlie char *minor_str; 471c0e09200SDave Airlie 472c0e09200SDave Airlie minor->kdev.parent = &minor->dev->pdev->dev; 473c0e09200SDave Airlie minor->kdev.class = drm_class; 474c0e09200SDave Airlie minor->kdev.release = drm_sysfs_device_release; 475c0e09200SDave Airlie minor->kdev.devt = minor->device; 476f453ba04SDave Airlie if (minor->type == DRM_MINOR_CONTROL) 477f453ba04SDave Airlie minor_str = "controlD%d"; 478f453ba04SDave Airlie else if (minor->type == DRM_MINOR_RENDER) 479f453ba04SDave Airlie minor_str = "renderD%d"; 480f453ba04SDave Airlie else 481c0e09200SDave Airlie minor_str = "card%d"; 482c0e09200SDave Airlie 4838f4bbd9fSKay Sievers dev_set_name(&minor->kdev, minor_str, minor->index); 484c0e09200SDave Airlie 485c0e09200SDave Airlie err = device_register(&minor->kdev); 486c0e09200SDave Airlie if (err) { 487c0e09200SDave Airlie DRM_ERROR("device add failed: %d\n", err); 488c0e09200SDave Airlie goto err_out; 489c0e09200SDave Airlie } 490c0e09200SDave Airlie 491c0e09200SDave Airlie return 0; 492c0e09200SDave Airlie 493c0e09200SDave Airlie err_out: 494c0e09200SDave Airlie return err; 495c0e09200SDave Airlie } 496c0e09200SDave Airlie 497c0e09200SDave Airlie /** 498c0e09200SDave Airlie * drm_sysfs_device_remove - remove DRM device 499c0e09200SDave Airlie * @dev: DRM device to remove 500c0e09200SDave Airlie * 501c0e09200SDave Airlie * This call unregisters and cleans up a class device that was created with a 502c0e09200SDave Airlie * call to drm_sysfs_device_add() 503c0e09200SDave Airlie */ 504c0e09200SDave Airlie void drm_sysfs_device_remove(struct drm_minor *minor) 505c0e09200SDave Airlie { 506c0e09200SDave Airlie device_unregister(&minor->kdev); 507c0e09200SDave Airlie } 508