1 files changed, 127 insertions, 0 deletions
diff --git a/gm12u320_drv.c b/gm12u320_drv.c
new file mode 100644
index 0000000..c2b3df0
--- /dev/null
+++ b/gm12u320_drv.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2012-2015 Red Hat Inc.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License v2. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+#include "gm12u320_drv.h"
+
+static int gm12u320_driver_set_busid(struct drm_device *d, struct drm_master *m)
+{
+	return 0;
+}
+
+static const struct vm_operations_struct gm12u320_gem_vm_ops = {
+	.fault = gm12u320_gem_fault,
+	.open = drm_gem_vm_open,
+	.close = drm_gem_vm_close,
+};
+
+static const struct file_operations gm12u320_driver_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_open,
+	.mmap = gm12u320_drm_gem_mmap,
+	.poll = drm_poll,
+	.read = drm_read,
+	.unlocked_ioctl	= drm_ioctl,
+	.release = drm_release,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = drm_compat_ioctl,
+#endif
+	.llseek = noop_llseek,
+};
+
+static struct drm_driver driver = {
+	.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
+	.load = gm12u320_driver_load,
+	.unload = gm12u320_driver_unload,
+	.set_busid = gm12u320_driver_set_busid,
+
+	/* gem hooks */
+	.gem_free_object = gm12u320_gem_free_object,
+	.gem_vm_ops = &gm12u320_gem_vm_ops,
+
+	.dumb_create = gm12u320_dumb_create,
+	.dumb_map_offset = gm12u320_gem_mmap,
+	.dumb_destroy = drm_gem_dumb_destroy,
+	.fops = &gm12u320_driver_fops,
+
+	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+	.gem_prime_export = gm12u320_gem_prime_export,
+	.gem_prime_import = gm12u320_gem_prime_import,
+
+	.name = DRIVER_NAME,
+	.desc = DRIVER_DESC,
+	.date = DRIVER_DATE,
+	.major = DRIVER_MAJOR,
+	.minor = DRIVER_MINOR,
+	.patchlevel = DRIVER_PATCHLEVEL,
+};
+
+static int gm12u320_usb_probe(struct usb_interface *interface,
+			 const struct usb_device_id *id)
+{
+	struct usb_device *udev = interface_to_usbdev(interface);
+	struct drm_device *dev;
+	int r;
+
+	/*
+	 * The gm12u320 presents itself to the system as 2 usb mass-storage
+	 * interfaces, for the second one we proceed successully with binding,
+	 * but otherwise ignore it.
+	 */
+	if (interface->cur_altsetting->desc.bInterfaceNumber != 0)
+		return 0;
+
+	dev = drm_dev_alloc(&driver, &interface->dev);
+	if (!dev)
+		return -ENOMEM;
+
+	r = drm_dev_register(dev, (unsigned long)udev);
+	if (r)
+		goto err_free;
+
+	usb_set_intfdata(interface, dev);
+	DRM_INFO("Initialized gm12u320 on minor %d\n", dev->primary->index);
+
+	return 0;
+
+err_free:
+	drm_dev_unref(dev);
+	return r;
+}
+
+static void gm12u320_usb_disconnect(struct usb_interface *interface)
+{
+	struct drm_device *dev = usb_get_intfdata(interface);
+
+	if (!dev)
+		return;
+
+	drm_kms_helper_poll_disable(dev);
+	drm_connector_unplug_all(dev);
+	gm12u320_fbdev_unplug(dev);
+	drm_unplug_dev(dev);
+}
+
+static struct usb_device_id id_table[] = {
+	{ USB_DEVICE(0x1de1, 0xc102) },
+	{},
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static struct usb_driver gm12u320_driver = {
+	.name = "gm12u320",
+	.probe = gm12u320_usb_probe,
+	.disconnect = gm12u320_usb_disconnect,
+	.id_table = id_table,
+};
+
+module_usb_driver(gm12u320_driver);
+MODULE_LICENSE("GPL");