[deliverable/linux.git] / drivers / gpu / drm / drm_usb.c

#include <drm/drmP.h>
#include <linux/usb.h>
#include <linux/module.h>

int drm_get_usb_dev(struct usb_interface *interface,
		    const struct usb_device_id *id,
		    struct drm_driver *driver)
{
	struct drm_device *dev;
	struct usb_device *usbdev;
	int ret;

	DRM_DEBUG("\n");

	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	if (!dev)
		return -ENOMEM;

	usbdev = interface_to_usbdev(interface);
	dev->usbdev = usbdev;
	dev->dev = &interface->dev;

	mutex_lock(&drm_global_mutex);

	ret = drm_fill_in_dev(dev, NULL, driver);
	if (ret) {
		printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
		goto err_g1;
	}

	usb_set_intfdata(interface, dev);
	ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
	if (ret)
		goto err_g1;

	if (drm_core_check_feature(dev, DRIVER_RENDER) && drm_rnodes) {
		ret = drm_get_minor(dev, &dev->render, DRM_MINOR_RENDER);
		if (ret)
			goto err_g11;
	}

	ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY);
	if (ret)
		goto err_g2;

	if (dev->driver->load) {
		ret = dev->driver->load(dev, 0);
		if (ret)
			goto err_g3;
	}

	/* setup the grouping for the legacy output */
	ret = drm_mode_group_init_legacy_group(dev,
					       &dev->primary->mode_group);
	if (ret)
		goto err_g3;

	list_add_tail(&dev->driver_item, &driver->device_list);

	mutex_unlock(&drm_global_mutex);

	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
		 driver->name, driver->major, driver->minor, driver->patchlevel,
		 driver->date, dev->primary->index);

	return 0;

err_g3:
	drm_put_minor(&dev->primary);
err_g2:
	if (dev->render)
		drm_put_minor(&dev->render);
err_g11:
	drm_put_minor(&dev->control);
err_g1:
	kfree(dev);
	mutex_unlock(&drm_global_mutex);
	return ret;

}
EXPORT_SYMBOL(drm_get_usb_dev);

static int drm_usb_get_irq(struct drm_device *dev)
{
	return 0;
}

static const char *drm_usb_get_name(struct drm_device *dev)
{
	return "USB";
}

static int drm_usb_set_busid(struct drm_device *dev,
			       struct drm_master *master)
{
	return 0;
}

static struct drm_bus drm_usb_bus = {
	.bus_type = DRIVER_BUS_USB,
	.get_irq = drm_usb_get_irq,
	.get_name = drm_usb_get_name,
	.set_busid = drm_usb_set_busid,
};
    
int drm_usb_init(struct drm_driver *driver, struct usb_driver *udriver)
{
	int res;
	DRM_DEBUG("\n");

	INIT_LIST_HEAD(&driver->device_list);
	driver->kdriver.usb = udriver;
	driver->bus = &drm_usb_bus;

	res = usb_register(udriver);
	return res;
}
EXPORT_SYMBOL(drm_usb_init);

void drm_usb_exit(struct drm_driver *driver,
		  struct usb_driver *udriver)
{
	usb_deregister(udriver);
}
EXPORT_SYMBOL(drm_usb_exit);

MODULE_AUTHOR("David Airlie");
MODULE_DESCRIPTION("USB DRM support");
MODULE_LICENSE("GPL and additional rights");
Commit	Line	Data
760285e7	1	#include <drm/drmP.h>
a250b9fd	2	#include <linux/usb.h>
b10c6d4b	3	#include <linux/module.h>
a250b9fd	4
a250b9fd DA	5	int drm_get_usb_dev(struct usb_interface *interface,
	6	const struct usb_device_id *id,
	7	struct drm_driver *driver)
	8	{
	9	struct drm_device *dev;
	10	struct usb_device *usbdev;
	11	int ret;
	12
	13	DRM_DEBUG("\n");
	14
	15	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
	16	if (!dev)
	17	return -ENOMEM;
	18
	19	usbdev = interface_to_usbdev(interface);
	20	dev->usbdev = usbdev;
9f23de52	21	dev->dev = &interface->dev;
a250b9fd DA	22
	23	mutex_lock(&drm_global_mutex);
	24
	25	ret = drm_fill_in_dev(dev, NULL, driver);
	26	if (ret) {
	27	printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
	28	goto err_g1;
	29	}
	30
	31	usb_set_intfdata(interface, dev);
	32	ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
	33	if (ret)
	34	goto err_g1;
	35
1793126f DH	36	if (drm_core_check_feature(dev, DRIVER_RENDER) && drm_rnodes) {
	37	ret = drm_get_minor(dev, &dev->render, DRM_MINOR_RENDER);
	38	if (ret)
	39	goto err_g11;
	40	}
	41
a250b9fd DA	42	ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY);
	43	if (ret)
	44	goto err_g2;
	45
	46	if (dev->driver->load) {
	47	ret = dev->driver->load(dev, 0);
	48	if (ret)
	49	goto err_g3;
	50	}
	51
	52	/* setup the grouping for the legacy output */
	53	ret = drm_mode_group_init_legacy_group(dev,
	54	&dev->primary->mode_group);
	55	if (ret)
	56	goto err_g3;
	57
	58	list_add_tail(&dev->driver_item, &driver->device_list);
	59
	60	mutex_unlock(&drm_global_mutex);
	61
	62	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
	63	driver->name, driver->major, driver->minor, driver->patchlevel,
	64	driver->date, dev->primary->index);
	65
	66	return 0;
	67
	68	err_g3:
	69	drm_put_minor(&dev->primary);
	70	err_g2:
1793126f DH	71	if (dev->render)
	72	drm_put_minor(&dev->render);
	73	err_g11:
a250b9fd DA	74	drm_put_minor(&dev->control);
	75	err_g1:
	76	kfree(dev);
	77	mutex_unlock(&drm_global_mutex);
	78	return ret;
	79
	80	}
	81	EXPORT_SYMBOL(drm_get_usb_dev);
	82
	83	static int drm_usb_get_irq(struct drm_device *dev)
	84	{
	85	return 0;
	86	}
	87
	88	static const char drm_usb_get_name(struct drm_device dev)
	89	{
	90	return "USB";
	91	}
	92
	93	static int drm_usb_set_busid(struct drm_device *dev,
	94	struct drm_master *master)
	95	{
	96	return 0;
	97	}
	98
	99	static struct drm_bus drm_usb_bus = {
	100	.bus_type = DRIVER_BUS_USB,
	101	.get_irq = drm_usb_get_irq,
	102	.get_name = drm_usb_get_name,
	103	.set_busid = drm_usb_set_busid,
	104	};
	105
	106	int drm_usb_init(struct drm_driver driver, struct usb_driver udriver)
	107	{
	108	int res;
	109	DRM_DEBUG("\n");
	110
	111	INIT_LIST_HEAD(&driver->device_list);
	112	driver->kdriver.usb = udriver;
	113	driver->bus = &drm_usb_bus;
	114
	115	res = usb_register(udriver);
	116	return res;
	117	}
	118	EXPORT_SYMBOL(drm_usb_init);
	119
	120	void drm_usb_exit(struct drm_driver *driver,
	121	struct usb_driver *udriver)
	122	{
	123	usb_deregister(udriver);
	124	}
	125	EXPORT_SYMBOL(drm_usb_exit);
b10c6d4b DA	126
	127	MODULE_AUTHOR("David Airlie");
	128	MODULE_DESCRIPTION("USB DRM support");
	129	MODULE_LICENSE("GPL and additional rights");