diff options
Diffstat (limited to 'drivers/char/drm/drm_sysfs.c')
| -rw-r--r-- | drivers/char/drm/drm_sysfs.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/drivers/char/drm/drm_sysfs.c b/drivers/char/drm/drm_sysfs.c deleted file mode 100644 index af211a0ef179..000000000000 --- a/drivers/char/drm/drm_sysfs.c +++ /dev/null @@ -1,208 +0,0 @@ - -/* - * drm_sysfs.c - Modifications to drm_sysfs_class.c to support - * extra sysfs attribute from DRM. Normal drm_sysfs_class - * does not allow adding attributes. - * - * Copyright (c) 2004 Jon Smirl <jonsmirl@gmail.com> - * Copyright (c) 2003-2004 Greg Kroah-Hartman <greg@kroah.com> - * Copyright (c) 2003-2004 IBM Corp. - * - * This file is released under the GPLv2 - * - */ - -#include <linux/device.h> -#include <linux/kdev_t.h> -#include <linux/err.h> - -#include "drm_core.h" -#include "drmP.h" - -#define to_drm_minor(d) container_of(d, struct drm_minor, kdev) - -/** - * drm_sysfs_suspend - DRM class suspend hook - * @dev: Linux device to suspend - * @state: power state to enter - * - * Just figures out what the actual struct drm_device associated with - * @dev is and calls its suspend hook, if present. - */ -static int drm_sysfs_suspend(struct device *dev, pm_message_t state) -{ - struct drm_minor *drm_minor = to_drm_minor(dev); - struct drm_device *drm_dev = drm_minor->dev; - - if (drm_dev->driver->suspend) - return drm_dev->driver->suspend(drm_dev, state); - - return 0; -} - -/** - * drm_sysfs_resume - DRM class resume hook - * @dev: Linux device to resume - * - * Just figures out what the actual struct drm_device associated with - * @dev is and calls its resume hook, if present. - */ -static int drm_sysfs_resume(struct device *dev) -{ - struct drm_minor *drm_minor = to_drm_minor(dev); - struct drm_device *drm_dev = drm_minor->dev; - - if (drm_dev->driver->resume) - return drm_dev->driver->resume(drm_dev); - - return 0; -} - -/* Display the version of drm_core. This doesn't work right in current design */ -static ssize_t version_show(struct class *dev, char *buf) -{ - return sprintf(buf, "%s %d.%d.%d %s\n", CORE_NAME, CORE_MAJOR, - CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE); -} - -static CLASS_ATTR(version, S_IRUGO, version_show, NULL); - -/** - * drm_sysfs_create - create a struct drm_sysfs_class structure - * @owner: pointer to the module that is to "own" this struct drm_sysfs_class - * @name: pointer to a string for the name of this class. - * - * This is used to create DRM class pointer that can then be used - * in calls to drm_sysfs_device_add(). - * - * Note, the pointer created here is to be destroyed when finished by making a - * call to drm_sysfs_destroy(). - */ -struct class *drm_sysfs_create(struct module *owner, char *name) -{ - struct class *class; - int err; - - class = class_create(owner, name); - if (IS_ERR(class)) { - err = PTR_ERR(class); - goto err_out; - } - - class->suspend = drm_sysfs_suspend; - class->resume = drm_sysfs_resume; - - err = class_create_file(class, &class_attr_version); - if (err) - goto err_out_class; - - return class; - -err_out_class: - class_destroy(class); -err_out: - return ERR_PTR(err); -} - -/** - * drm_sysfs_destroy - destroys DRM class - * - * Destroy the DRM device class. - */ -void drm_sysfs_destroy(void) -{ - if ((drm_class == NULL) || (IS_ERR(drm_class))) - return; - class_remove_file(drm_class, &class_attr_version); - class_destroy(drm_class); -} - -static ssize_t show_dri(struct device *device, struct device_attribute *attr, - char *buf) -{ - struct drm_minor *drm_minor = to_drm_minor(device); - struct drm_device *drm_dev = drm_minor->dev; - if (drm_dev->driver->dri_library_name) - return drm_dev->driver->dri_library_name(drm_dev, buf); - return snprintf(buf, PAGE_SIZE, "%s\n", drm_dev->driver->pci_driver.name); -} - -static struct device_attribute device_attrs[] = { - __ATTR(dri_library_name, S_IRUGO, show_dri, NULL), -}; - -/** - * drm_sysfs_device_release - do nothing - * @dev: Linux device - * - * Normally, this would free the DRM device associated with @dev, along - * with cleaning up any other stuff. But we do that in the DRM core, so - * this function can just return and hope that the core does its job. - */ -static void drm_sysfs_device_release(struct device *dev) -{ - return; -} - -/** - * drm_sysfs_device_add - adds a class device to sysfs for a character driver - * @dev: DRM device to be added - * @head: DRM head in question - * - * Add a DRM device to the DRM's device model class. We use @dev's PCI device - * as the parent for the Linux device, and make sure it has a file containing - * the driver we're using (for userspace compatibility). - */ -int drm_sysfs_device_add(struct drm_minor *minor) -{ - int err; - int i, j; - char *minor_str; - - minor->kdev.parent = &minor->dev->pdev->dev; - minor->kdev.class = drm_class; - minor->kdev.release = drm_sysfs_device_release; - minor->kdev.devt = minor->device; - minor_str = "card%d"; - - snprintf(minor->kdev.bus_id, BUS_ID_SIZE, minor_str, minor->index); - - err = device_register(&minor->kdev); - if (err) { - DRM_ERROR("device add failed: %d\n", err); - goto err_out; - } - - for (i = 0; i < ARRAY_SIZE(device_attrs); i++) { - err = device_create_file(&minor->kdev, &device_attrs[i]); - if (err) - goto err_out_files; - } - - return 0; - -err_out_files: - if (i > 0) - for (j = 0; j < i; j++) - device_remove_file(&minor->kdev, &device_attrs[i]); - device_unregister(&minor->kdev); -err_out: - - return err; -} - -/** - * drm_sysfs_device_remove - remove DRM device - * @dev: DRM device to remove - * - * This call unregisters and cleans up a class device that was created with a - * call to drm_sysfs_device_add() - */ -void drm_sysfs_device_remove(struct drm_minor *minor) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(device_attrs); i++) - device_remove_file(&minor->kdev, &device_attrs[i]); - device_unregister(&minor->kdev); -} |
