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authorTomi Valkeinen <tomi.valkeinen@ti.com>2015-11-13 22:18:33 +0200
committerTomi Valkeinen <tomi.valkeinen@ti.com>2015-11-13 23:10:00 +0200
commitac362f919a2376bac1f7fd4c96f04edf24f30cff (patch)
treed77b8996aac7f7edb74bc687a011f39262e72118 /py/pykms.i
parent98773593e11a399dcfe3cf0656dca5022a9b2547 (diff)
Connector: prettier connector names
Diffstat (limited to 'py/pykms.i')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-05 22:43:39 +0000
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/*
 * 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 "drmP.h"
#include "drm_core.h"

struct drm_sysfs_class {
	struct class_device_attribute attr;
	struct class class;
};
#define to_drm_sysfs_class(d) container_of(d, struct drm_sysfs_class, class)

struct simple_dev {
	dev_t dev;
	struct class_device class_dev;
};
#define to_simple_dev(d) container_of(d, struct simple_dev, class_dev)

static void release_simple_dev(struct class_device *class_dev)
{
	struct simple_dev *s_dev = to_simple_dev(class_dev);
	kfree(s_dev);
}

static ssize_t show_dev(struct class_device *class_dev, char *buf)
{
	struct simple_dev *s_dev = to_simple_dev(class_dev);
	return print_dev_t(buf, s_dev->dev);
}

static void drm_sysfs_class_release(struct class *class)
{
	struct drm_sysfs_class *cs = to_drm_sysfs_class(class);
	kfree(cs);
}

/* 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 a struct drm_sysfs_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 drm_sysfs_class *drm_sysfs_create(struct module *owner, char *name)
{
	struct drm_sysfs_class *cs;
	int retval;

	cs = kmalloc(sizeof(*cs), GFP_KERNEL);
	if (!cs) {
		retval = -ENOMEM;
		goto error;
	}
	memset(cs, 0x00, sizeof(*cs));

	cs->class.name = name;
	cs->class.class_release = drm_sysfs_class_release;
	cs->class.release = release_simple_dev;

	cs->attr.attr.name = "dev";
	cs->attr.attr.mode = S_IRUGO;
	cs->attr.attr.owner = owner;
	cs->attr.show = show_dev;