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> 175a0e3ad6STejun Heo #include <linux/gfp.h> 18c0e09200SDave Airlie #include <linux/err.h> 19c0e09200SDave Airlie 20327c225bSThomas Hellstrom #include "drm_sysfs.h" 21c0e09200SDave Airlie #include "drm_core.h" 22c0e09200SDave Airlie #include "drmP.h" 23c0e09200SDave Airlie 24c0e09200SDave Airlie #define to_drm_minor(d) container_of(d, struct drm_minor, kdev) 25f453ba04SDave Airlie #define to_drm_connector(d) container_of(d, struct drm_connector, kdev) 26c0e09200SDave Airlie 2708e4d534SThomas Hellstrom static struct device_type drm_sysfs_device_minor = { 2808e4d534SThomas Hellstrom .name = "drm_minor" 2908e4d534SThomas Hellstrom }; 3008e4d534SThomas Hellstrom 31c0e09200SDave Airlie /** 3208e4d534SThomas Hellstrom * drm_class_suspend - DRM class suspend hook 33c0e09200SDave Airlie * @dev: Linux device to suspend 34c0e09200SDave Airlie * @state: power state to enter 35c0e09200SDave Airlie * 36c0e09200SDave Airlie * Just figures out what the actual struct drm_device associated with 37c0e09200SDave Airlie * @dev is and calls its suspend hook, if present. 38c0e09200SDave Airlie */ 3908e4d534SThomas Hellstrom static int drm_class_suspend(struct device *dev, pm_message_t state) 40c0e09200SDave Airlie { 4108e4d534SThomas Hellstrom if (dev->type == &drm_sysfs_device_minor) { 42c0e09200SDave Airlie struct drm_minor *drm_minor = to_drm_minor(dev); 43c0e09200SDave Airlie struct drm_device *drm_dev = drm_minor->dev; 44c0e09200SDave Airlie 45112b715eSKristian Høgsberg if (drm_minor->type == DRM_MINOR_LEGACY && 46112b715eSKristian Høgsberg !drm_core_check_feature(drm_dev, DRIVER_MODESET) && 47112b715eSKristian Høgsberg drm_dev->driver->suspend) 48c0e09200SDave Airlie return drm_dev->driver->suspend(drm_dev, state); 4908e4d534SThomas Hellstrom } 50c0e09200SDave Airlie return 0; 51c0e09200SDave Airlie } 52c0e09200SDave Airlie 53c0e09200SDave Airlie /** 5408e4d534SThomas Hellstrom * drm_class_resume - DRM class resume hook 55c0e09200SDave Airlie * @dev: Linux device to resume 56c0e09200SDave Airlie * 57c0e09200SDave Airlie * Just figures out what the actual struct drm_device associated with 58c0e09200SDave Airlie * @dev is and calls its resume hook, if present. 59c0e09200SDave Airlie */ 6008e4d534SThomas Hellstrom static int drm_class_resume(struct device *dev) 61c0e09200SDave Airlie { 6208e4d534SThomas Hellstrom if (dev->type == &drm_sysfs_device_minor) { 63c0e09200SDave Airlie struct drm_minor *drm_minor = to_drm_minor(dev); 64c0e09200SDave Airlie struct drm_device *drm_dev = drm_minor->dev; 65c0e09200SDave Airlie 66112b715eSKristian Høgsberg if (drm_minor->type == DRM_MINOR_LEGACY && 67112b715eSKristian Høgsberg !drm_core_check_feature(drm_dev, DRIVER_MODESET) && 68112b715eSKristian Høgsberg drm_dev->driver->resume) 69c0e09200SDave Airlie return drm_dev->driver->resume(drm_dev); 7008e4d534SThomas Hellstrom } 71c0e09200SDave Airlie return 0; 72c0e09200SDave Airlie } 73c0e09200SDave Airlie 74e454cea2SKay Sievers static char *drm_devnode(struct device *dev, mode_t *mode) 7502200d06SKay Sievers { 7602200d06SKay Sievers return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev)); 7702200d06SKay Sievers } 7802200d06SKay Sievers 790933e2d9SAndi Kleen static CLASS_ATTR_STRING(version, S_IRUGO, 800933e2d9SAndi Kleen CORE_NAME " " 810933e2d9SAndi Kleen __stringify(CORE_MAJOR) "." 820933e2d9SAndi Kleen __stringify(CORE_MINOR) "." 830933e2d9SAndi Kleen __stringify(CORE_PATCHLEVEL) " " 840933e2d9SAndi Kleen CORE_DATE); 85c0e09200SDave Airlie 86c0e09200SDave Airlie /** 87c0e09200SDave Airlie * drm_sysfs_create - create a struct drm_sysfs_class structure 88c0e09200SDave Airlie * @owner: pointer to the module that is to "own" this struct drm_sysfs_class 89c0e09200SDave Airlie * @name: pointer to a string for the name of this class. 90c0e09200SDave Airlie * 91c0e09200SDave Airlie * This is used to create DRM class pointer that can then be used 92c0e09200SDave Airlie * in calls to drm_sysfs_device_add(). 93c0e09200SDave Airlie * 94c0e09200SDave Airlie * Note, the pointer created here is to be destroyed when finished by making a 95c0e09200SDave Airlie * call to drm_sysfs_destroy(). 96c0e09200SDave Airlie */ 97c0e09200SDave Airlie struct class *drm_sysfs_create(struct module *owner, char *name) 98c0e09200SDave Airlie { 99c0e09200SDave Airlie struct class *class; 100c0e09200SDave Airlie int err; 101c0e09200SDave Airlie 102c0e09200SDave Airlie class = class_create(owner, name); 103c0e09200SDave Airlie if (IS_ERR(class)) { 104c0e09200SDave Airlie err = PTR_ERR(class); 105c0e09200SDave Airlie goto err_out; 106c0e09200SDave Airlie } 107c0e09200SDave Airlie 10808e4d534SThomas Hellstrom class->suspend = drm_class_suspend; 10908e4d534SThomas Hellstrom class->resume = drm_class_resume; 110c0e09200SDave Airlie 1110933e2d9SAndi Kleen err = class_create_file(class, &class_attr_version.attr); 112c0e09200SDave Airlie if (err) 113c0e09200SDave Airlie goto err_out_class; 114c0e09200SDave Airlie 115e454cea2SKay Sievers class->devnode = drm_devnode; 11602200d06SKay Sievers 117c0e09200SDave Airlie return class; 118c0e09200SDave Airlie 119c0e09200SDave Airlie err_out_class: 120c0e09200SDave Airlie class_destroy(class); 121c0e09200SDave Airlie err_out: 122c0e09200SDave Airlie return ERR_PTR(err); 123c0e09200SDave Airlie } 124c0e09200SDave Airlie 125c0e09200SDave Airlie /** 126c0e09200SDave Airlie * drm_sysfs_destroy - destroys DRM class 127c0e09200SDave Airlie * 128c0e09200SDave Airlie * Destroy the DRM device class. 129c0e09200SDave Airlie */ 130c0e09200SDave Airlie void drm_sysfs_destroy(void) 131c0e09200SDave Airlie { 132c0e09200SDave Airlie if ((drm_class == NULL) || (IS_ERR(drm_class))) 133c0e09200SDave Airlie return; 1340933e2d9SAndi Kleen class_remove_file(drm_class, &class_attr_version.attr); 135c0e09200SDave Airlie class_destroy(drm_class); 136c0e09200SDave Airlie } 137c0e09200SDave Airlie 138c0e09200SDave Airlie /** 139c0e09200SDave Airlie * drm_sysfs_device_release - do nothing 140c0e09200SDave Airlie * @dev: Linux device 141c0e09200SDave Airlie * 142c0e09200SDave Airlie * Normally, this would free the DRM device associated with @dev, along 143c0e09200SDave Airlie * with cleaning up any other stuff. But we do that in the DRM core, so 144c0e09200SDave Airlie * this function can just return and hope that the core does its job. 145c0e09200SDave Airlie */ 146c0e09200SDave Airlie static void drm_sysfs_device_release(struct device *dev) 147c0e09200SDave Airlie { 14877d26dc9SMa Ling memset(dev, 0, sizeof(struct device)); 149c0e09200SDave Airlie return; 150c0e09200SDave Airlie } 151c0e09200SDave Airlie 152f453ba04SDave Airlie /* 153f453ba04SDave Airlie * Connector properties 154f453ba04SDave Airlie */ 155f453ba04SDave Airlie static ssize_t status_show(struct device *device, 156f453ba04SDave Airlie struct device_attribute *attr, 157f453ba04SDave Airlie char *buf) 158f453ba04SDave Airlie { 159f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 160f453ba04SDave Airlie enum drm_connector_status status; 161007c80a5SChris Wilson int ret; 162007c80a5SChris Wilson 163007c80a5SChris Wilson ret = mutex_lock_interruptible(&connector->dev->mode_config.mutex); 164007c80a5SChris Wilson if (ret) 165007c80a5SChris Wilson return ret; 166f453ba04SDave Airlie 1677b334fcbSChris Wilson status = connector->funcs->detect(connector, true); 168007c80a5SChris Wilson mutex_unlock(&connector->dev->mode_config.mutex); 169007c80a5SChris Wilson 17075185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", 171f453ba04SDave Airlie drm_get_connector_status_name(status)); 172f453ba04SDave Airlie } 173f453ba04SDave Airlie 174f453ba04SDave Airlie static ssize_t dpms_show(struct device *device, 175f453ba04SDave Airlie struct device_attribute *attr, 176f453ba04SDave Airlie char *buf) 177f453ba04SDave Airlie { 178f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 179f453ba04SDave Airlie struct drm_device *dev = connector->dev; 180f453ba04SDave Airlie uint64_t dpms_status; 181f453ba04SDave Airlie int ret; 182f453ba04SDave Airlie 183f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, 184f453ba04SDave Airlie dev->mode_config.dpms_property, 185f453ba04SDave Airlie &dpms_status); 186f453ba04SDave Airlie if (ret) 187f453ba04SDave Airlie return 0; 188f453ba04SDave Airlie 18975185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", 190f453ba04SDave Airlie drm_get_dpms_name((int)dpms_status)); 191f453ba04SDave Airlie } 192f453ba04SDave Airlie 193f453ba04SDave Airlie static ssize_t enabled_show(struct device *device, 194f453ba04SDave Airlie struct device_attribute *attr, 195f453ba04SDave Airlie char *buf) 196f453ba04SDave Airlie { 197f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 198f453ba04SDave Airlie 19975185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", connector->encoder ? "enabled" : 200f453ba04SDave Airlie "disabled"); 201f453ba04SDave Airlie } 202f453ba04SDave Airlie 2032c3c8beaSChris Wright static ssize_t edid_show(struct file *filp, struct kobject *kobj, 2042c3c8beaSChris Wright struct bin_attribute *attr, char *buf, loff_t off, 2052c3c8beaSChris Wright size_t count) 206f453ba04SDave Airlie { 207f453ba04SDave Airlie struct device *connector_dev = container_of(kobj, struct device, kobj); 208f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(connector_dev); 209f453ba04SDave Airlie unsigned char *edid; 210f453ba04SDave Airlie size_t size; 211f453ba04SDave Airlie 212f453ba04SDave Airlie if (!connector->edid_blob_ptr) 213f453ba04SDave Airlie return 0; 214f453ba04SDave Airlie 215f453ba04SDave Airlie edid = connector->edid_blob_ptr->data; 216f453ba04SDave Airlie size = connector->edid_blob_ptr->length; 217f453ba04SDave Airlie if (!edid) 218f453ba04SDave Airlie return 0; 219f453ba04SDave Airlie 220f453ba04SDave Airlie if (off >= size) 221f453ba04SDave Airlie return 0; 222f453ba04SDave Airlie 223f453ba04SDave Airlie if (off + count > size) 224f453ba04SDave Airlie count = size - off; 225f453ba04SDave Airlie memcpy(buf, edid + off, count); 226f453ba04SDave Airlie 227f453ba04SDave Airlie return count; 228f453ba04SDave Airlie } 229f453ba04SDave Airlie 230f453ba04SDave Airlie static ssize_t modes_show(struct device *device, 231f453ba04SDave Airlie struct device_attribute *attr, 232f453ba04SDave Airlie char *buf) 233f453ba04SDave Airlie { 234f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 235f453ba04SDave Airlie struct drm_display_mode *mode; 236f453ba04SDave Airlie int written = 0; 237f453ba04SDave Airlie 238f453ba04SDave Airlie list_for_each_entry(mode, &connector->modes, head) { 239f453ba04SDave Airlie written += snprintf(buf + written, PAGE_SIZE - written, "%s\n", 240f453ba04SDave Airlie mode->name); 241f453ba04SDave Airlie } 242f453ba04SDave Airlie 243f453ba04SDave Airlie return written; 244f453ba04SDave Airlie } 245f453ba04SDave Airlie 246f453ba04SDave Airlie static ssize_t subconnector_show(struct device *device, 247f453ba04SDave Airlie struct device_attribute *attr, 248f453ba04SDave Airlie char *buf) 249f453ba04SDave Airlie { 250f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 251f453ba04SDave Airlie struct drm_device *dev = connector->dev; 252f453ba04SDave Airlie struct drm_property *prop = NULL; 253f453ba04SDave Airlie uint64_t subconnector; 254f453ba04SDave Airlie int is_tv = 0; 255f453ba04SDave Airlie int ret; 256f453ba04SDave Airlie 257f453ba04SDave Airlie switch (connector->connector_type) { 258f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 259f453ba04SDave Airlie prop = dev->mode_config.dvi_i_subconnector_property; 260f453ba04SDave Airlie break; 261f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 262f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 263f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 26474bd3c26SFrancisco Jerez case DRM_MODE_CONNECTOR_TV: 265f453ba04SDave Airlie prop = dev->mode_config.tv_subconnector_property; 266f453ba04SDave Airlie is_tv = 1; 267f453ba04SDave Airlie break; 268f453ba04SDave Airlie default: 269f453ba04SDave Airlie DRM_ERROR("Wrong connector type for this property\n"); 270f453ba04SDave Airlie return 0; 271f453ba04SDave Airlie } 272f453ba04SDave Airlie 273f453ba04SDave Airlie if (!prop) { 274f453ba04SDave Airlie DRM_ERROR("Unable to find subconnector property\n"); 275f453ba04SDave Airlie return 0; 276f453ba04SDave Airlie } 277f453ba04SDave Airlie 278f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, prop, &subconnector); 279f453ba04SDave Airlie if (ret) 280f453ba04SDave Airlie return 0; 281f453ba04SDave Airlie 282f453ba04SDave Airlie return snprintf(buf, PAGE_SIZE, "%s", is_tv ? 283f453ba04SDave Airlie drm_get_tv_subconnector_name((int)subconnector) : 284f453ba04SDave Airlie drm_get_dvi_i_subconnector_name((int)subconnector)); 285f453ba04SDave Airlie } 286f453ba04SDave Airlie 287f453ba04SDave Airlie static ssize_t select_subconnector_show(struct device *device, 288f453ba04SDave Airlie struct device_attribute *attr, 289f453ba04SDave Airlie char *buf) 290f453ba04SDave Airlie { 291f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 292f453ba04SDave Airlie struct drm_device *dev = connector->dev; 293f453ba04SDave Airlie struct drm_property *prop = NULL; 294f453ba04SDave Airlie uint64_t subconnector; 295f453ba04SDave Airlie int is_tv = 0; 296f453ba04SDave Airlie int ret; 297f453ba04SDave Airlie 298f453ba04SDave Airlie switch (connector->connector_type) { 299f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 300f453ba04SDave Airlie prop = dev->mode_config.dvi_i_select_subconnector_property; 301f453ba04SDave Airlie break; 302f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 303f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 304f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 30574bd3c26SFrancisco Jerez case DRM_MODE_CONNECTOR_TV: 306f453ba04SDave Airlie prop = dev->mode_config.tv_select_subconnector_property; 307f453ba04SDave Airlie is_tv = 1; 308f453ba04SDave Airlie break; 309f453ba04SDave Airlie default: 310f453ba04SDave Airlie DRM_ERROR("Wrong connector type for this property\n"); 311f453ba04SDave Airlie return 0; 312f453ba04SDave Airlie } 313f453ba04SDave Airlie 314f453ba04SDave Airlie if (!prop) { 315f453ba04SDave Airlie DRM_ERROR("Unable to find select subconnector property\n"); 316f453ba04SDave Airlie return 0; 317f453ba04SDave Airlie } 318f453ba04SDave Airlie 319f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, prop, &subconnector); 320f453ba04SDave Airlie if (ret) 321f453ba04SDave Airlie return 0; 322f453ba04SDave Airlie 323f453ba04SDave Airlie return snprintf(buf, PAGE_SIZE, "%s", is_tv ? 324f453ba04SDave Airlie drm_get_tv_select_name((int)subconnector) : 325f453ba04SDave Airlie drm_get_dvi_i_select_name((int)subconnector)); 326f453ba04SDave Airlie } 327f453ba04SDave Airlie 328f453ba04SDave Airlie static struct device_attribute connector_attrs[] = { 329f453ba04SDave Airlie __ATTR_RO(status), 330f453ba04SDave Airlie __ATTR_RO(enabled), 331f453ba04SDave Airlie __ATTR_RO(dpms), 332f453ba04SDave Airlie __ATTR_RO(modes), 333f453ba04SDave Airlie }; 334f453ba04SDave Airlie 335f453ba04SDave Airlie /* These attributes are for both DVI-I connectors and all types of tv-out. */ 336f453ba04SDave Airlie static struct device_attribute connector_attrs_opt1[] = { 337f453ba04SDave Airlie __ATTR_RO(subconnector), 338f453ba04SDave Airlie __ATTR_RO(select_subconnector), 339f453ba04SDave Airlie }; 340f453ba04SDave Airlie 341f453ba04SDave Airlie static struct bin_attribute edid_attr = { 342f453ba04SDave Airlie .attr.name = "edid", 343e36ebaf4SKeith Packard .attr.mode = 0444, 3447466f4ccSAdam Jackson .size = 0, 345f453ba04SDave Airlie .read = edid_show, 346f453ba04SDave Airlie }; 347f453ba04SDave Airlie 348f453ba04SDave Airlie /** 349f453ba04SDave Airlie * drm_sysfs_connector_add - add an connector to sysfs 350f453ba04SDave Airlie * @connector: connector to add 351f453ba04SDave Airlie * 352f453ba04SDave Airlie * Create an connector device in sysfs, along with its associated connector 353f453ba04SDave Airlie * properties (so far, connection status, dpms, mode list & edid) and 354f453ba04SDave Airlie * generate a hotplug event so userspace knows there's a new connector 355f453ba04SDave Airlie * available. 356f453ba04SDave Airlie * 357f453ba04SDave Airlie * Note: 358f453ba04SDave Airlie * This routine should only be called *once* for each DRM minor registered. 359f453ba04SDave Airlie * A second call for an already registered device will trigger the BUG_ON 360f453ba04SDave Airlie * below. 361f453ba04SDave Airlie */ 362f453ba04SDave Airlie int drm_sysfs_connector_add(struct drm_connector *connector) 363f453ba04SDave Airlie { 364f453ba04SDave Airlie struct drm_device *dev = connector->dev; 365a1c4560dSDan Carpenter int attr_cnt = 0; 366a1c4560dSDan Carpenter int opt_cnt = 0; 367a1c4560dSDan Carpenter int i; 368a1c4560dSDan Carpenter int ret = 0; 369f453ba04SDave Airlie 370f453ba04SDave Airlie /* We shouldn't get called more than once for the same connector */ 371f453ba04SDave Airlie BUG_ON(device_is_registered(&connector->kdev)); 372f453ba04SDave Airlie 373f453ba04SDave Airlie connector->kdev.parent = &dev->primary->kdev; 374f453ba04SDave Airlie connector->kdev.class = drm_class; 375f453ba04SDave Airlie connector->kdev.release = drm_sysfs_device_release; 376f453ba04SDave Airlie 377f453ba04SDave Airlie DRM_DEBUG("adding \"%s\" to sysfs\n", 378f453ba04SDave Airlie drm_get_connector_name(connector)); 379f453ba04SDave Airlie 3802ead054cSKay Sievers dev_set_name(&connector->kdev, "card%d-%s", 381f453ba04SDave Airlie dev->primary->index, drm_get_connector_name(connector)); 382f453ba04SDave Airlie ret = device_register(&connector->kdev); 383f453ba04SDave Airlie 384f453ba04SDave Airlie if (ret) { 385f453ba04SDave Airlie DRM_ERROR("failed to register connector device: %d\n", ret); 386f453ba04SDave Airlie goto out; 387f453ba04SDave Airlie } 388f453ba04SDave Airlie 389f453ba04SDave Airlie /* Standard attributes */ 390f453ba04SDave Airlie 391a1c4560dSDan Carpenter for (attr_cnt = 0; attr_cnt < ARRAY_SIZE(connector_attrs); attr_cnt++) { 392a1c4560dSDan Carpenter ret = device_create_file(&connector->kdev, &connector_attrs[attr_cnt]); 393f453ba04SDave Airlie if (ret) 394f453ba04SDave Airlie goto err_out_files; 395f453ba04SDave Airlie } 396f453ba04SDave Airlie 397f453ba04SDave Airlie /* Optional attributes */ 398f453ba04SDave Airlie /* 399f453ba04SDave Airlie * In the long run it maybe a good idea to make one set of 400f453ba04SDave Airlie * optionals per connector type. 401f453ba04SDave Airlie */ 402f453ba04SDave Airlie switch (connector->connector_type) { 403f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 404f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 405f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 406f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 40774bd3c26SFrancisco Jerez case DRM_MODE_CONNECTOR_TV: 408a1c4560dSDan Carpenter for (opt_cnt = 0; opt_cnt < ARRAY_SIZE(connector_attrs_opt1); opt_cnt++) { 409a1c4560dSDan Carpenter ret = device_create_file(&connector->kdev, &connector_attrs_opt1[opt_cnt]); 410f453ba04SDave Airlie if (ret) 411f453ba04SDave Airlie goto err_out_files; 412f453ba04SDave Airlie } 413f453ba04SDave Airlie break; 414f453ba04SDave Airlie default: 415f453ba04SDave Airlie break; 416f453ba04SDave Airlie } 417f453ba04SDave Airlie 418f453ba04SDave Airlie ret = sysfs_create_bin_file(&connector->kdev.kobj, &edid_attr); 419f453ba04SDave Airlie if (ret) 420f453ba04SDave Airlie goto err_out_files; 421f453ba04SDave Airlie 422f453ba04SDave Airlie /* Let userspace know we have a new connector */ 423f453ba04SDave Airlie drm_sysfs_hotplug_event(dev); 424f453ba04SDave Airlie 425f453ba04SDave Airlie return 0; 426f453ba04SDave Airlie 427f453ba04SDave Airlie err_out_files: 428a1c4560dSDan Carpenter for (i = 0; i < opt_cnt; i++) 429a1c4560dSDan Carpenter device_remove_file(&connector->kdev, &connector_attrs_opt1[i]); 430a1c4560dSDan Carpenter for (i = 0; i < attr_cnt; i++) 431a1c4560dSDan Carpenter device_remove_file(&connector->kdev, &connector_attrs[i]); 432f453ba04SDave Airlie device_unregister(&connector->kdev); 433f453ba04SDave Airlie 434f453ba04SDave Airlie out: 435f453ba04SDave Airlie return ret; 436f453ba04SDave Airlie } 437f453ba04SDave Airlie EXPORT_SYMBOL(drm_sysfs_connector_add); 438f453ba04SDave Airlie 439f453ba04SDave Airlie /** 440f453ba04SDave Airlie * drm_sysfs_connector_remove - remove an connector device from sysfs 441f453ba04SDave Airlie * @connector: connector to remove 442f453ba04SDave Airlie * 443f453ba04SDave Airlie * Remove @connector and its associated attributes from sysfs. Note that 444f453ba04SDave Airlie * the device model core will take care of sending the "remove" uevent 445f453ba04SDave Airlie * at this time, so we don't need to do it. 446f453ba04SDave Airlie * 447f453ba04SDave Airlie * Note: 448f453ba04SDave Airlie * This routine should only be called if the connector was previously 449f453ba04SDave Airlie * successfully registered. If @connector hasn't been registered yet, 450f453ba04SDave Airlie * you'll likely see a panic somewhere deep in sysfs code when called. 451f453ba04SDave Airlie */ 452f453ba04SDave Airlie void drm_sysfs_connector_remove(struct drm_connector *connector) 453f453ba04SDave Airlie { 454f453ba04SDave Airlie int i; 455f453ba04SDave Airlie 456f453ba04SDave Airlie DRM_DEBUG("removing \"%s\" from sysfs\n", 457f453ba04SDave Airlie drm_get_connector_name(connector)); 458f453ba04SDave Airlie 459f453ba04SDave Airlie for (i = 0; i < ARRAY_SIZE(connector_attrs); i++) 460f453ba04SDave Airlie device_remove_file(&connector->kdev, &connector_attrs[i]); 461f453ba04SDave Airlie sysfs_remove_bin_file(&connector->kdev.kobj, &edid_attr); 462f453ba04SDave Airlie device_unregister(&connector->kdev); 463f453ba04SDave Airlie } 464f453ba04SDave Airlie EXPORT_SYMBOL(drm_sysfs_connector_remove); 465f453ba04SDave Airlie 466f453ba04SDave Airlie /** 467f453ba04SDave Airlie * drm_sysfs_hotplug_event - generate a DRM uevent 468f453ba04SDave Airlie * @dev: DRM device 469f453ba04SDave Airlie * 470f453ba04SDave Airlie * Send a uevent for the DRM device specified by @dev. Currently we only 471f453ba04SDave Airlie * set HOTPLUG=1 in the uevent environment, but this could be expanded to 472f453ba04SDave Airlie * deal with other types of events. 473f453ba04SDave Airlie */ 474f453ba04SDave Airlie void drm_sysfs_hotplug_event(struct drm_device *dev) 475f453ba04SDave Airlie { 476f453ba04SDave Airlie char *event_string = "HOTPLUG=1"; 477f453ba04SDave Airlie char *envp[] = { event_string, NULL }; 478f453ba04SDave Airlie 479f453ba04SDave Airlie DRM_DEBUG("generating hotplug event\n"); 480f453ba04SDave Airlie 481f453ba04SDave Airlie kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, envp); 482f453ba04SDave Airlie } 4835ca58282SJesse Barnes EXPORT_SYMBOL(drm_sysfs_hotplug_event); 484f453ba04SDave Airlie 485c0e09200SDave Airlie /** 486c0e09200SDave Airlie * drm_sysfs_device_add - adds a class device to sysfs for a character driver 487c0e09200SDave Airlie * @dev: DRM device to be added 488c0e09200SDave Airlie * @head: DRM head in question 489c0e09200SDave Airlie * 490c0e09200SDave Airlie * Add a DRM device to the DRM's device model class. We use @dev's PCI device 491c0e09200SDave Airlie * as the parent for the Linux device, and make sure it has a file containing 492c0e09200SDave Airlie * the driver we're using (for userspace compatibility). 493c0e09200SDave Airlie */ 494c0e09200SDave Airlie int drm_sysfs_device_add(struct drm_minor *minor) 495c0e09200SDave Airlie { 496c0e09200SDave Airlie int err; 497c0e09200SDave Airlie char *minor_str; 498c0e09200SDave Airlie 499dcdb1674SJordan Crouse minor->kdev.parent = minor->dev->dev; 500dcdb1674SJordan Crouse 501c0e09200SDave Airlie minor->kdev.class = drm_class; 502c0e09200SDave Airlie minor->kdev.release = drm_sysfs_device_release; 503c0e09200SDave Airlie minor->kdev.devt = minor->device; 50408e4d534SThomas Hellstrom minor->kdev.type = &drm_sysfs_device_minor; 505f453ba04SDave Airlie if (minor->type == DRM_MINOR_CONTROL) 506f453ba04SDave Airlie minor_str = "controlD%d"; 507f453ba04SDave Airlie else if (minor->type == DRM_MINOR_RENDER) 508f453ba04SDave Airlie minor_str = "renderD%d"; 509f453ba04SDave Airlie else 510c0e09200SDave Airlie minor_str = "card%d"; 511c0e09200SDave Airlie 5128f4bbd9fSKay Sievers dev_set_name(&minor->kdev, minor_str, minor->index); 513c0e09200SDave Airlie 514c0e09200SDave Airlie err = device_register(&minor->kdev); 515c0e09200SDave Airlie if (err) { 516c0e09200SDave Airlie DRM_ERROR("device add failed: %d\n", err); 517c0e09200SDave Airlie goto err_out; 518c0e09200SDave Airlie } 519c0e09200SDave Airlie 520c0e09200SDave Airlie return 0; 521c0e09200SDave Airlie 522c0e09200SDave Airlie err_out: 523c0e09200SDave Airlie return err; 524c0e09200SDave Airlie } 525c0e09200SDave Airlie 526c0e09200SDave Airlie /** 527c0e09200SDave Airlie * drm_sysfs_device_remove - remove DRM device 528c0e09200SDave Airlie * @dev: DRM device to remove 529c0e09200SDave Airlie * 530c0e09200SDave Airlie * This call unregisters and cleans up a class device that was created with a 531c0e09200SDave Airlie * call to drm_sysfs_device_add() 532c0e09200SDave Airlie */ 533c0e09200SDave Airlie void drm_sysfs_device_remove(struct drm_minor *minor) 534c0e09200SDave Airlie { 535c0e09200SDave Airlie device_unregister(&minor->kdev); 536c0e09200SDave Airlie } 537327c225bSThomas Hellstrom 538327c225bSThomas Hellstrom 539327c225bSThomas Hellstrom /** 540327c225bSThomas Hellstrom * drm_class_device_register - Register a struct device in the drm class. 541327c225bSThomas Hellstrom * 542327c225bSThomas Hellstrom * @dev: pointer to struct device to register. 543327c225bSThomas Hellstrom * 544327c225bSThomas Hellstrom * @dev should have all relevant members pre-filled with the exception 545327c225bSThomas Hellstrom * of the class member. In particular, the device_type member must 546327c225bSThomas Hellstrom * be set. 547327c225bSThomas Hellstrom */ 548327c225bSThomas Hellstrom 549327c225bSThomas Hellstrom int drm_class_device_register(struct device *dev) 550327c225bSThomas Hellstrom { 551327c225bSThomas Hellstrom dev->class = drm_class; 552327c225bSThomas Hellstrom return device_register(dev); 553327c225bSThomas Hellstrom } 554327c225bSThomas Hellstrom EXPORT_SYMBOL_GPL(drm_class_device_register); 555327c225bSThomas Hellstrom 556327c225bSThomas Hellstrom void drm_class_device_unregister(struct device *dev) 557327c225bSThomas Hellstrom { 558327c225bSThomas Hellstrom return device_unregister(dev); 559327c225bSThomas Hellstrom } 560327c225bSThomas Hellstrom EXPORT_SYMBOL_GPL(drm_class_device_unregister); 561