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/*
* Copyright (C) 2013 NVIDIA Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include "drm.h"
static int drm_host1x_set_busid(struct drm_device *dev,
struct drm_master *master)
{
const char *device = dev_name(dev->dev);
const char *driver = dev->driver->name;
const char *bus = dev->dev->bus->name;
int length;
master->unique_len = strlen(bus) + 1 + strlen(device);
master->unique_size = master->unique_len;
master->unique = kmalloc(master->unique_len + 1, GFP_KERNEL);
if (!master->unique)
return -ENOMEM;
snprintf(master->unique, master->unique_len + 1, "%s:%s", bus, device);
length = strlen(driver) + 1 + master->unique_len;
dev->devname = kmalloc(length + 1, GFP_KERNEL);
if (!dev->devname)
return -ENOMEM;
snprintf(dev->devname, length + 1, "%s@%s", driver, master->unique);
return 0;
}
static struct drm_bus drm_host1x_bus = {
.bus_type = DRIVER_BUS_HOST1X,
.set_busid = drm_host1x_set_busid,
};
int drm_host1x_init(struct drm_driver *driver, struct host1x_device *device)
{
struct drm_device *drm;
int ret;
driver->bus = &drm_host1x_bus;
drm = drm_dev_alloc(driver, &device->dev);
if (!drm)
return -ENOMEM;
ret = drm_dev_register(drm, 0);
if (ret)
goto err_free;
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n", driver->name,
driver->major, driver->minor, driver->patchlevel,
driver->date, drm->primary->index);
return 0;
err_free:
drm_dev_free(drm);
return ret;
}
void drm_host1x_exit(struct drm_driver *driver, struct host1x_device *device)
{
struct tegra_drm *tegra = dev_get_drvdata(&device->dev);
drm_put_dev(tegra->drm);
}
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