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> 192d1a8a48SPaul Gortmaker #include <linux/export.h> 20c0e09200SDave Airlie 21327c225bSThomas Hellstrom #include "drm_sysfs.h" 22c0e09200SDave Airlie #include "drm_core.h" 23c0e09200SDave Airlie #include "drmP.h" 24c0e09200SDave Airlie 25c0e09200SDave Airlie #define to_drm_minor(d) container_of(d, struct drm_minor, kdev) 26f453ba04SDave Airlie #define to_drm_connector(d) container_of(d, struct drm_connector, kdev) 27c0e09200SDave Airlie 2808e4d534SThomas Hellstrom static struct device_type drm_sysfs_device_minor = { 2908e4d534SThomas Hellstrom .name = "drm_minor" 3008e4d534SThomas Hellstrom }; 3108e4d534SThomas Hellstrom 32c0e09200SDave Airlie /** 3308e4d534SThomas Hellstrom * drm_class_suspend - DRM class suspend hook 34c0e09200SDave Airlie * @dev: Linux device to suspend 35c0e09200SDave Airlie * @state: power state to enter 36c0e09200SDave Airlie * 37c0e09200SDave Airlie * Just figures out what the actual struct drm_device associated with 38c0e09200SDave Airlie * @dev is and calls its suspend hook, if present. 39c0e09200SDave Airlie */ 4008e4d534SThomas Hellstrom static int drm_class_suspend(struct device *dev, pm_message_t state) 41c0e09200SDave Airlie { 4208e4d534SThomas Hellstrom if (dev->type == &drm_sysfs_device_minor) { 43c0e09200SDave Airlie struct drm_minor *drm_minor = to_drm_minor(dev); 44c0e09200SDave Airlie struct drm_device *drm_dev = drm_minor->dev; 45c0e09200SDave Airlie 46112b715eSKristian Høgsberg if (drm_minor->type == DRM_MINOR_LEGACY && 47112b715eSKristian Høgsberg !drm_core_check_feature(drm_dev, DRIVER_MODESET) && 48112b715eSKristian Høgsberg drm_dev->driver->suspend) 49c0e09200SDave Airlie return drm_dev->driver->suspend(drm_dev, state); 5008e4d534SThomas Hellstrom } 51c0e09200SDave Airlie return 0; 52c0e09200SDave Airlie } 53c0e09200SDave Airlie 54c0e09200SDave Airlie /** 5508e4d534SThomas Hellstrom * drm_class_resume - DRM class resume hook 56c0e09200SDave Airlie * @dev: Linux device to resume 57c0e09200SDave Airlie * 58c0e09200SDave Airlie * Just figures out what the actual struct drm_device associated with 59c0e09200SDave Airlie * @dev is and calls its resume hook, if present. 60c0e09200SDave Airlie */ 6108e4d534SThomas Hellstrom static int drm_class_resume(struct device *dev) 62c0e09200SDave Airlie { 6308e4d534SThomas Hellstrom if (dev->type == &drm_sysfs_device_minor) { 64c0e09200SDave Airlie struct drm_minor *drm_minor = to_drm_minor(dev); 65c0e09200SDave Airlie struct drm_device *drm_dev = drm_minor->dev; 66c0e09200SDave Airlie 67112b715eSKristian Høgsberg if (drm_minor->type == DRM_MINOR_LEGACY && 68112b715eSKristian Høgsberg !drm_core_check_feature(drm_dev, DRIVER_MODESET) && 69112b715eSKristian Høgsberg drm_dev->driver->resume) 70c0e09200SDave Airlie return drm_dev->driver->resume(drm_dev); 7108e4d534SThomas Hellstrom } 72c0e09200SDave Airlie return 0; 73c0e09200SDave Airlie } 74c0e09200SDave Airlie 752c9ede55SAl Viro static char *drm_devnode(struct device *dev, umode_t *mode) 7602200d06SKay Sievers { 7702200d06SKay Sievers return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev)); 7802200d06SKay Sievers } 7902200d06SKay Sievers 800933e2d9SAndi Kleen static CLASS_ATTR_STRING(version, S_IRUGO, 810933e2d9SAndi Kleen CORE_NAME " " 820933e2d9SAndi Kleen __stringify(CORE_MAJOR) "." 830933e2d9SAndi Kleen __stringify(CORE_MINOR) "." 840933e2d9SAndi Kleen __stringify(CORE_PATCHLEVEL) " " 850933e2d9SAndi Kleen CORE_DATE); 86c0e09200SDave Airlie 87c0e09200SDave Airlie /** 88c0e09200SDave Airlie * drm_sysfs_create - create a struct drm_sysfs_class structure 89c0e09200SDave Airlie * @owner: pointer to the module that is to "own" this struct drm_sysfs_class 90c0e09200SDave Airlie * @name: pointer to a string for the name of this class. 91c0e09200SDave Airlie * 92c0e09200SDave Airlie * This is used to create DRM class pointer that can then be used 93c0e09200SDave Airlie * in calls to drm_sysfs_device_add(). 94c0e09200SDave Airlie * 95c0e09200SDave Airlie * Note, the pointer created here is to be destroyed when finished by making a 96c0e09200SDave Airlie * call to drm_sysfs_destroy(). 97c0e09200SDave Airlie */ 98c0e09200SDave Airlie struct class *drm_sysfs_create(struct module *owner, char *name) 99c0e09200SDave Airlie { 100c0e09200SDave Airlie struct class *class; 101c0e09200SDave Airlie int err; 102c0e09200SDave Airlie 103c0e09200SDave Airlie class = class_create(owner, name); 104c0e09200SDave Airlie if (IS_ERR(class)) { 105c0e09200SDave Airlie err = PTR_ERR(class); 106c0e09200SDave Airlie goto err_out; 107c0e09200SDave Airlie } 108c0e09200SDave Airlie 10908e4d534SThomas Hellstrom class->suspend = drm_class_suspend; 11008e4d534SThomas Hellstrom class->resume = drm_class_resume; 111c0e09200SDave Airlie 1120933e2d9SAndi Kleen err = class_create_file(class, &class_attr_version.attr); 113c0e09200SDave Airlie if (err) 114c0e09200SDave Airlie goto err_out_class; 115c0e09200SDave Airlie 116e454cea2SKay Sievers class->devnode = drm_devnode; 11702200d06SKay Sievers 118c0e09200SDave Airlie return class; 119c0e09200SDave Airlie 120c0e09200SDave Airlie err_out_class: 121c0e09200SDave Airlie class_destroy(class); 122c0e09200SDave Airlie err_out: 123c0e09200SDave Airlie return ERR_PTR(err); 124c0e09200SDave Airlie } 125c0e09200SDave Airlie 126c0e09200SDave Airlie /** 127c0e09200SDave Airlie * drm_sysfs_destroy - destroys DRM class 128c0e09200SDave Airlie * 129c0e09200SDave Airlie * Destroy the DRM device class. 130c0e09200SDave Airlie */ 131c0e09200SDave Airlie void drm_sysfs_destroy(void) 132c0e09200SDave Airlie { 133c0e09200SDave Airlie if ((drm_class == NULL) || (IS_ERR(drm_class))) 134c0e09200SDave Airlie return; 1350933e2d9SAndi Kleen class_remove_file(drm_class, &class_attr_version.attr); 136c0e09200SDave Airlie class_destroy(drm_class); 137c0e09200SDave Airlie } 138c0e09200SDave Airlie 139c0e09200SDave Airlie /** 140c0e09200SDave Airlie * drm_sysfs_device_release - do nothing 141c0e09200SDave Airlie * @dev: Linux device 142c0e09200SDave Airlie * 143c0e09200SDave Airlie * Normally, this would free the DRM device associated with @dev, along 144c0e09200SDave Airlie * with cleaning up any other stuff. But we do that in the DRM core, so 145c0e09200SDave Airlie * this function can just return and hope that the core does its job. 146c0e09200SDave Airlie */ 147c0e09200SDave Airlie static void drm_sysfs_device_release(struct device *dev) 148c0e09200SDave Airlie { 14977d26dc9SMa Ling memset(dev, 0, sizeof(struct device)); 150c0e09200SDave Airlie return; 151c0e09200SDave Airlie } 152c0e09200SDave Airlie 153f453ba04SDave Airlie /* 154f453ba04SDave Airlie * Connector properties 155f453ba04SDave Airlie */ 156f453ba04SDave Airlie static ssize_t status_show(struct device *device, 157f453ba04SDave Airlie struct device_attribute *attr, 158f453ba04SDave Airlie char *buf) 159f453ba04SDave Airlie { 160f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 161f453ba04SDave Airlie enum drm_connector_status status; 162007c80a5SChris Wilson int ret; 163007c80a5SChris Wilson 164007c80a5SChris Wilson ret = mutex_lock_interruptible(&connector->dev->mode_config.mutex); 165007c80a5SChris Wilson if (ret) 166007c80a5SChris Wilson return ret; 167f453ba04SDave Airlie 1687b334fcbSChris Wilson status = connector->funcs->detect(connector, true); 169007c80a5SChris Wilson mutex_unlock(&connector->dev->mode_config.mutex); 170007c80a5SChris Wilson 17175185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", 172f453ba04SDave Airlie drm_get_connector_status_name(status)); 173f453ba04SDave Airlie } 174f453ba04SDave Airlie 175f453ba04SDave Airlie static ssize_t dpms_show(struct device *device, 176f453ba04SDave Airlie struct device_attribute *attr, 177f453ba04SDave Airlie char *buf) 178f453ba04SDave Airlie { 179f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 180f453ba04SDave Airlie struct drm_device *dev = connector->dev; 181f453ba04SDave Airlie uint64_t dpms_status; 182f453ba04SDave Airlie int ret; 183f453ba04SDave Airlie 184f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, 185f453ba04SDave Airlie dev->mode_config.dpms_property, 186f453ba04SDave Airlie &dpms_status); 187f453ba04SDave Airlie if (ret) 188f453ba04SDave Airlie return 0; 189f453ba04SDave Airlie 19075185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", 191f453ba04SDave Airlie drm_get_dpms_name((int)dpms_status)); 192f453ba04SDave Airlie } 193f453ba04SDave Airlie 194f453ba04SDave Airlie static ssize_t enabled_show(struct device *device, 195f453ba04SDave Airlie struct device_attribute *attr, 196f453ba04SDave Airlie char *buf) 197f453ba04SDave Airlie { 198f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 199f453ba04SDave Airlie 20075185c92SKeith Packard return snprintf(buf, PAGE_SIZE, "%s\n", connector->encoder ? "enabled" : 201f453ba04SDave Airlie "disabled"); 202f453ba04SDave Airlie } 203f453ba04SDave Airlie 2042c3c8beaSChris Wright static ssize_t edid_show(struct file *filp, struct kobject *kobj, 2052c3c8beaSChris Wright struct bin_attribute *attr, char *buf, loff_t off, 2062c3c8beaSChris Wright size_t count) 207f453ba04SDave Airlie { 208f453ba04SDave Airlie struct device *connector_dev = container_of(kobj, struct device, kobj); 209f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(connector_dev); 210f453ba04SDave Airlie unsigned char *edid; 211f453ba04SDave Airlie size_t size; 212f453ba04SDave Airlie 213f453ba04SDave Airlie if (!connector->edid_blob_ptr) 214f453ba04SDave Airlie return 0; 215f453ba04SDave Airlie 216f453ba04SDave Airlie edid = connector->edid_blob_ptr->data; 217f453ba04SDave Airlie size = connector->edid_blob_ptr->length; 218f453ba04SDave Airlie if (!edid) 219f453ba04SDave Airlie return 0; 220f453ba04SDave Airlie 221f453ba04SDave Airlie if (off >= size) 222f453ba04SDave Airlie return 0; 223f453ba04SDave Airlie 224f453ba04SDave Airlie if (off + count > size) 225f453ba04SDave Airlie count = size - off; 226f453ba04SDave Airlie memcpy(buf, edid + off, count); 227f453ba04SDave Airlie 228f453ba04SDave Airlie return count; 229f453ba04SDave Airlie } 230f453ba04SDave Airlie 231f453ba04SDave Airlie static ssize_t modes_show(struct device *device, 232f453ba04SDave Airlie struct device_attribute *attr, 233f453ba04SDave Airlie char *buf) 234f453ba04SDave Airlie { 235f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 236f453ba04SDave Airlie struct drm_display_mode *mode; 237f453ba04SDave Airlie int written = 0; 238f453ba04SDave Airlie 239f453ba04SDave Airlie list_for_each_entry(mode, &connector->modes, head) { 240f453ba04SDave Airlie written += snprintf(buf + written, PAGE_SIZE - written, "%s\n", 241f453ba04SDave Airlie mode->name); 242f453ba04SDave Airlie } 243f453ba04SDave Airlie 244f453ba04SDave Airlie return written; 245f453ba04SDave Airlie } 246f453ba04SDave Airlie 247f453ba04SDave Airlie static ssize_t subconnector_show(struct device *device, 248f453ba04SDave Airlie struct device_attribute *attr, 249f453ba04SDave Airlie char *buf) 250f453ba04SDave Airlie { 251f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 252f453ba04SDave Airlie struct drm_device *dev = connector->dev; 253f453ba04SDave Airlie struct drm_property *prop = NULL; 254f453ba04SDave Airlie uint64_t subconnector; 255f453ba04SDave Airlie int is_tv = 0; 256f453ba04SDave Airlie int ret; 257f453ba04SDave Airlie 258f453ba04SDave Airlie switch (connector->connector_type) { 259f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 260f453ba04SDave Airlie prop = dev->mode_config.dvi_i_subconnector_property; 261f453ba04SDave Airlie break; 262f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 263f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 264f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 26574bd3c26SFrancisco Jerez case DRM_MODE_CONNECTOR_TV: 266f453ba04SDave Airlie prop = dev->mode_config.tv_subconnector_property; 267f453ba04SDave Airlie is_tv = 1; 268f453ba04SDave Airlie break; 269f453ba04SDave Airlie default: 270f453ba04SDave Airlie DRM_ERROR("Wrong connector type for this property\n"); 271f453ba04SDave Airlie return 0; 272f453ba04SDave Airlie } 273f453ba04SDave Airlie 274f453ba04SDave Airlie if (!prop) { 275f453ba04SDave Airlie DRM_ERROR("Unable to find subconnector property\n"); 276f453ba04SDave Airlie return 0; 277f453ba04SDave Airlie } 278f453ba04SDave Airlie 279f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, prop, &subconnector); 280f453ba04SDave Airlie if (ret) 281f453ba04SDave Airlie return 0; 282f453ba04SDave Airlie 283f453ba04SDave Airlie return snprintf(buf, PAGE_SIZE, "%s", is_tv ? 284f453ba04SDave Airlie drm_get_tv_subconnector_name((int)subconnector) : 285f453ba04SDave Airlie drm_get_dvi_i_subconnector_name((int)subconnector)); 286f453ba04SDave Airlie } 287f453ba04SDave Airlie 288f453ba04SDave Airlie static ssize_t select_subconnector_show(struct device *device, 289f453ba04SDave Airlie struct device_attribute *attr, 290f453ba04SDave Airlie char *buf) 291f453ba04SDave Airlie { 292f453ba04SDave Airlie struct drm_connector *connector = to_drm_connector(device); 293f453ba04SDave Airlie struct drm_device *dev = connector->dev; 294f453ba04SDave Airlie struct drm_property *prop = NULL; 295f453ba04SDave Airlie uint64_t subconnector; 296f453ba04SDave Airlie int is_tv = 0; 297f453ba04SDave Airlie int ret; 298f453ba04SDave Airlie 299f453ba04SDave Airlie switch (connector->connector_type) { 300f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 301f453ba04SDave Airlie prop = dev->mode_config.dvi_i_select_subconnector_property; 302f453ba04SDave Airlie break; 303f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 304f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 305f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 30674bd3c26SFrancisco Jerez case DRM_MODE_CONNECTOR_TV: 307f453ba04SDave Airlie prop = dev->mode_config.tv_select_subconnector_property; 308f453ba04SDave Airlie is_tv = 1; 309f453ba04SDave Airlie break; 310f453ba04SDave Airlie default: 311f453ba04SDave Airlie DRM_ERROR("Wrong connector type for this property\n"); 312f453ba04SDave Airlie return 0; 313f453ba04SDave Airlie } 314f453ba04SDave Airlie 315f453ba04SDave Airlie if (!prop) { 316f453ba04SDave Airlie DRM_ERROR("Unable to find select subconnector property\n"); 317f453ba04SDave Airlie return 0; 318f453ba04SDave Airlie } 319f453ba04SDave Airlie 320f453ba04SDave Airlie ret = drm_connector_property_get_value(connector, prop, &subconnector); 321f453ba04SDave Airlie if (ret) 322f453ba04SDave Airlie return 0; 323f453ba04SDave Airlie 324f453ba04SDave Airlie return snprintf(buf, PAGE_SIZE, "%s", is_tv ? 325f453ba04SDave Airlie drm_get_tv_select_name((int)subconnector) : 326f453ba04SDave Airlie drm_get_dvi_i_select_name((int)subconnector)); 327f453ba04SDave Airlie } 328f453ba04SDave Airlie 329f453ba04SDave Airlie static struct device_attribute connector_attrs[] = { 330f453ba04SDave Airlie __ATTR_RO(status), 331f453ba04SDave Airlie __ATTR_RO(enabled), 332f453ba04SDave Airlie __ATTR_RO(dpms), 333f453ba04SDave Airlie __ATTR_RO(modes), 334f453ba04SDave Airlie }; 335f453ba04SDave Airlie 336f453ba04SDave Airlie /* These attributes are for both DVI-I connectors and all types of tv-out. */ 337f453ba04SDave Airlie static struct device_attribute connector_attrs_opt1[] = { 338f453ba04SDave Airlie __ATTR_RO(subconnector), 339f453ba04SDave Airlie __ATTR_RO(select_subconnector), 340f453ba04SDave Airlie }; 341f453ba04SDave Airlie 342f453ba04SDave Airlie static struct bin_attribute edid_attr = { 343f453ba04SDave Airlie .attr.name = "edid", 344e36ebaf4SKeith Packard .attr.mode = 0444, 3457466f4ccSAdam Jackson .size = 0, 346f453ba04SDave Airlie .read = edid_show, 347f453ba04SDave Airlie }; 348f453ba04SDave Airlie 349f453ba04SDave Airlie /** 350f453ba04SDave Airlie * drm_sysfs_connector_add - add an connector to sysfs 351f453ba04SDave Airlie * @connector: connector to add 352f453ba04SDave Airlie * 353f453ba04SDave Airlie * Create an connector device in sysfs, along with its associated connector 354f453ba04SDave Airlie * properties (so far, connection status, dpms, mode list & edid) and 355f453ba04SDave Airlie * generate a hotplug event so userspace knows there's a new connector 356f453ba04SDave Airlie * available. 357f453ba04SDave Airlie * 358f453ba04SDave Airlie * Note: 359f453ba04SDave Airlie * This routine should only be called *once* for each DRM minor registered. 360f453ba04SDave Airlie * A second call for an already registered device will trigger the BUG_ON 361f453ba04SDave Airlie * below. 362f453ba04SDave Airlie */ 363f453ba04SDave Airlie int drm_sysfs_connector_add(struct drm_connector *connector) 364f453ba04SDave Airlie { 365f453ba04SDave Airlie struct drm_device *dev = connector->dev; 366a1c4560dSDan Carpenter int attr_cnt = 0; 367a1c4560dSDan Carpenter int opt_cnt = 0; 368a1c4560dSDan Carpenter int i; 369a1c4560dSDan Carpenter int ret = 0; 370f453ba04SDave Airlie 371f453ba04SDave Airlie /* We shouldn't get called more than once for the same connector */ 372f453ba04SDave Airlie BUG_ON(device_is_registered(&connector->kdev)); 373f453ba04SDave Airlie 374f453ba04SDave Airlie connector->kdev.parent = &dev->primary->kdev; 375f453ba04SDave Airlie connector->kdev.class = drm_class; 376f453ba04SDave Airlie connector->kdev.release = drm_sysfs_device_release; 377f453ba04SDave Airlie 378f453ba04SDave Airlie DRM_DEBUG("adding \"%s\" to sysfs\n", 379f453ba04SDave Airlie drm_get_connector_name(connector)); 380f453ba04SDave Airlie 3812ead054cSKay Sievers dev_set_name(&connector->kdev, "card%d-%s", 382f453ba04SDave Airlie dev->primary->index, drm_get_connector_name(connector)); 383f453ba04SDave Airlie ret = device_register(&connector->kdev); 384f453ba04SDave Airlie 385f453ba04SDave Airlie if (ret) { 386f453ba04SDave Airlie DRM_ERROR("failed to register connector device: %d\n", ret); 387f453ba04SDave Airlie goto out; 388f453ba04SDave Airlie } 389f453ba04SDave Airlie 390f453ba04SDave Airlie /* Standard attributes */ 391f453ba04SDave Airlie 392a1c4560dSDan Carpenter for (attr_cnt = 0; attr_cnt < ARRAY_SIZE(connector_attrs); attr_cnt++) { 393a1c4560dSDan Carpenter ret = device_create_file(&connector->kdev, &connector_attrs[attr_cnt]); 394f453ba04SDave Airlie if (ret) 395f453ba04SDave Airlie goto err_out_files; 396f453ba04SDave Airlie } 397f453ba04SDave Airlie 398f453ba04SDave Airlie /* Optional attributes */ 399f453ba04SDave Airlie /* 400f453ba04SDave Airlie * In the long run it maybe a good idea to make one set of 401f453ba04SDave Airlie * optionals per connector type. 402f453ba04SDave Airlie */ 403f453ba04SDave Airlie switch (connector->connector_type) { 404f453ba04SDave Airlie case DRM_MODE_CONNECTOR_DVII: 405f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Composite: 406f453ba04SDave Airlie case DRM_MODE_CONNECTOR_SVIDEO: 407f453ba04SDave Airlie case DRM_MODE_CONNECTOR_Component: 40874bd3c26SFrancisco Jerez case DRM_MODE_CONNECTOR_TV: 409a1c4560dSDan Carpenter for (opt_cnt = 0; opt_cnt < ARRAY_SIZE(connector_attrs_opt1); opt_cnt++) { 410a1c4560dSDan Carpenter ret = device_create_file(&connector->kdev, &connector_attrs_opt1[opt_cnt]); 411f453ba04SDave Airlie if (ret) 412f453ba04SDave Airlie goto err_out_files; 413f453ba04SDave Airlie } 414f453ba04SDave Airlie break; 415f453ba04SDave Airlie default: 416f453ba04SDave Airlie break; 417f453ba04SDave Airlie } 418f453ba04SDave Airlie 419f453ba04SDave Airlie ret = sysfs_create_bin_file(&connector->kdev.kobj, &edid_attr); 420f453ba04SDave Airlie if (ret) 421f453ba04SDave Airlie goto err_out_files; 422f453ba04SDave Airlie 423f453ba04SDave Airlie /* Let userspace know we have a new connector */ 424f453ba04SDave Airlie drm_sysfs_hotplug_event(dev); 425f453ba04SDave Airlie 426f453ba04SDave Airlie return 0; 427f453ba04SDave Airlie 428f453ba04SDave Airlie err_out_files: 429a1c4560dSDan Carpenter for (i = 0; i < opt_cnt; i++) 430a1c4560dSDan Carpenter device_remove_file(&connector->kdev, &connector_attrs_opt1[i]); 431a1c4560dSDan Carpenter for (i = 0; i < attr_cnt; i++) 432a1c4560dSDan Carpenter device_remove_file(&connector->kdev, &connector_attrs[i]); 433f453ba04SDave Airlie device_unregister(&connector->kdev); 434f453ba04SDave Airlie 435f453ba04SDave Airlie out: 436f453ba04SDave Airlie return ret; 437f453ba04SDave Airlie } 438f453ba04SDave Airlie EXPORT_SYMBOL(drm_sysfs_connector_add); 439f453ba04SDave Airlie 440f453ba04SDave Airlie /** 441f453ba04SDave Airlie * drm_sysfs_connector_remove - remove an connector device from sysfs 442f453ba04SDave Airlie * @connector: connector to remove 443f453ba04SDave Airlie * 444f453ba04SDave Airlie * Remove @connector and its associated attributes from sysfs. Note that 445f453ba04SDave Airlie * the device model core will take care of sending the "remove" uevent 446f453ba04SDave Airlie * at this time, so we don't need to do it. 447f453ba04SDave Airlie * 448f453ba04SDave Airlie * Note: 449f453ba04SDave Airlie * This routine should only be called if the connector was previously 450f453ba04SDave Airlie * successfully registered. If @connector hasn't been registered yet, 451f453ba04SDave Airlie * you'll likely see a panic somewhere deep in sysfs code when called. 452f453ba04SDave Airlie */ 453f453ba04SDave Airlie void drm_sysfs_connector_remove(struct drm_connector *connector) 454f453ba04SDave Airlie { 455f453ba04SDave Airlie int i; 456f453ba04SDave Airlie 4571828fe6cSDave Airlie if (!connector->kdev.parent) 4581828fe6cSDave Airlie return; 459f453ba04SDave Airlie DRM_DEBUG("removing \"%s\" from sysfs\n", 460f453ba04SDave Airlie drm_get_connector_name(connector)); 461f453ba04SDave Airlie 462f453ba04SDave Airlie for (i = 0; i < ARRAY_SIZE(connector_attrs); i++) 463f453ba04SDave Airlie device_remove_file(&connector->kdev, &connector_attrs[i]); 464f453ba04SDave Airlie sysfs_remove_bin_file(&connector->kdev.kobj, &edid_attr); 465f453ba04SDave Airlie device_unregister(&connector->kdev); 4661828fe6cSDave Airlie connector->kdev.parent = NULL; 467f453ba04SDave Airlie } 468f453ba04SDave Airlie EXPORT_SYMBOL(drm_sysfs_connector_remove); 469f453ba04SDave Airlie 470f453ba04SDave Airlie /** 471f453ba04SDave Airlie * drm_sysfs_hotplug_event - generate a DRM uevent 472f453ba04SDave Airlie * @dev: DRM device 473f453ba04SDave Airlie * 474f453ba04SDave Airlie * Send a uevent for the DRM device specified by @dev. Currently we only 475f453ba04SDave Airlie * set HOTPLUG=1 in the uevent environment, but this could be expanded to 476f453ba04SDave Airlie * deal with other types of events. 477f453ba04SDave Airlie */ 478f453ba04SDave Airlie void drm_sysfs_hotplug_event(struct drm_device *dev) 479f453ba04SDave Airlie { 480f453ba04SDave Airlie char *event_string = "HOTPLUG=1"; 481f453ba04SDave Airlie char *envp[] = { event_string, NULL }; 482f453ba04SDave Airlie 483f453ba04SDave Airlie DRM_DEBUG("generating hotplug event\n"); 484f453ba04SDave Airlie 485f453ba04SDave Airlie kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, envp); 486f453ba04SDave Airlie } 4875ca58282SJesse Barnes EXPORT_SYMBOL(drm_sysfs_hotplug_event); 488f453ba04SDave Airlie 489c0e09200SDave Airlie /** 490c0e09200SDave Airlie * drm_sysfs_device_add - adds a class device to sysfs for a character driver 491c0e09200SDave Airlie * @dev: DRM device to be added 492c0e09200SDave Airlie * @head: DRM head in question 493c0e09200SDave Airlie * 494c0e09200SDave Airlie * Add a DRM device to the DRM's device model class. We use @dev's PCI device 495c0e09200SDave Airlie * as the parent for the Linux device, and make sure it has a file containing 496c0e09200SDave Airlie * the driver we're using (for userspace compatibility). 497c0e09200SDave Airlie */ 498c0e09200SDave Airlie int drm_sysfs_device_add(struct drm_minor *minor) 499c0e09200SDave Airlie { 500c0e09200SDave Airlie int err; 501c0e09200SDave Airlie char *minor_str; 502c0e09200SDave Airlie 503dcdb1674SJordan Crouse minor->kdev.parent = minor->dev->dev; 504dcdb1674SJordan Crouse 505c0e09200SDave Airlie minor->kdev.class = drm_class; 506c0e09200SDave Airlie minor->kdev.release = drm_sysfs_device_release; 507c0e09200SDave Airlie minor->kdev.devt = minor->device; 50808e4d534SThomas Hellstrom minor->kdev.type = &drm_sysfs_device_minor; 509f453ba04SDave Airlie if (minor->type == DRM_MINOR_CONTROL) 510f453ba04SDave Airlie minor_str = "controlD%d"; 511f453ba04SDave Airlie else if (minor->type == DRM_MINOR_RENDER) 512f453ba04SDave Airlie minor_str = "renderD%d"; 513f453ba04SDave Airlie else 514c0e09200SDave Airlie minor_str = "card%d"; 515c0e09200SDave Airlie 5168f4bbd9fSKay Sievers dev_set_name(&minor->kdev, minor_str, minor->index); 517c0e09200SDave Airlie 518c0e09200SDave Airlie err = device_register(&minor->kdev); 519c0e09200SDave Airlie if (err) { 520c0e09200SDave Airlie DRM_ERROR("device add failed: %d\n", err); 521c0e09200SDave Airlie goto err_out; 522c0e09200SDave Airlie } 523c0e09200SDave Airlie 524c0e09200SDave Airlie return 0; 525c0e09200SDave Airlie 526c0e09200SDave Airlie err_out: 527c0e09200SDave Airlie return err; 528c0e09200SDave Airlie } 529c0e09200SDave Airlie 530c0e09200SDave Airlie /** 531c0e09200SDave Airlie * drm_sysfs_device_remove - remove DRM device 532c0e09200SDave Airlie * @dev: DRM device to remove 533c0e09200SDave Airlie * 534c0e09200SDave Airlie * This call unregisters and cleans up a class device that was created with a 535c0e09200SDave Airlie * call to drm_sysfs_device_add() 536c0e09200SDave Airlie */ 537c0e09200SDave Airlie void drm_sysfs_device_remove(struct drm_minor *minor) 538c0e09200SDave Airlie { 5391828fe6cSDave Airlie if (minor->kdev.parent) 540c0e09200SDave Airlie device_unregister(&minor->kdev); 5411828fe6cSDave Airlie minor->kdev.parent = NULL; 542c0e09200SDave Airlie } 543327c225bSThomas Hellstrom 544327c225bSThomas Hellstrom 545327c225bSThomas Hellstrom /** 546327c225bSThomas Hellstrom * drm_class_device_register - Register a struct device in the drm class. 547327c225bSThomas Hellstrom * 548327c225bSThomas Hellstrom * @dev: pointer to struct device to register. 549327c225bSThomas Hellstrom * 550327c225bSThomas Hellstrom * @dev should have all relevant members pre-filled with the exception 551327c225bSThomas Hellstrom * of the class member. In particular, the device_type member must 552327c225bSThomas Hellstrom * be set. 553327c225bSThomas Hellstrom */ 554327c225bSThomas Hellstrom 555327c225bSThomas Hellstrom int drm_class_device_register(struct device *dev) 556327c225bSThomas Hellstrom { 557327c225bSThomas Hellstrom dev->class = drm_class; 558327c225bSThomas Hellstrom return device_register(dev); 559327c225bSThomas Hellstrom } 560327c225bSThomas Hellstrom EXPORT_SYMBOL_GPL(drm_class_device_register); 561327c225bSThomas Hellstrom 562327c225bSThomas Hellstrom void drm_class_device_unregister(struct device *dev) 563327c225bSThomas Hellstrom { 564327c225bSThomas Hellstrom return device_unregister(dev); 565327c225bSThomas Hellstrom } 566327c225bSThomas Hellstrom EXPORT_SYMBOL_GPL(drm_class_device_unregister); 567