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/*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* Authors:
* Inki Dae <inki.dae@samsung.com>
* Joonyoung Shim <jy0922.shim@samsung.com>
* Seung-Woo Kim <sw0312.kim@samsung.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "drmP.h"
#include "drm.h"
#include "drm_crtc_helper.h"
#include <drm/exynos_drm.h>
#include "exynos_drm_drv.h"
#include "exynos_drm_crtc.h"
#include "exynos_drm_fbdev.h"
#include "exynos_drm_fb.h"
#include "exynos_drm_gem.h"
#define DRIVER_NAME "exynos-drm"
#define DRIVER_DESC "Samsung SoC DRM"
#define DRIVER_DATE "20110530"
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
{
struct exynos_drm_private *private;
int ret;
int nr;
DRM_DEBUG_DRIVER("%s\n", __FILE__);
private = kzalloc(sizeof(struct exynos_drm_private), GFP_KERNEL);
if (!private) {
DRM_ERROR("failed to allocate private\n");
return -ENOMEM;
}
INIT_LIST_HEAD(&private->pageflip_event_list);
dev->dev_private = (void *)private;
drm_mode_config_init(dev);
/* init kms poll for handling hpd */
drm_kms_helper_poll_init(dev);
exynos_drm_mode_config_init(dev);
/*
* EXYNOS4 is enough to have two CRTCs and each crtc would be used
* without dependency of hardware.
*/
for (nr = 0; nr < MAX_CRTC; nr++) {
ret = exynos_drm_crtc_create(dev, nr);
if (ret)
goto err_crtc;
}
ret = drm_vblank_init(dev, MAX_CRTC);
if (ret)
goto err_crtc;
/*
* probe sub drivers such as display controller and hdmi driver,
* that were registered at probe() of platform driver
* to the sub driver and create encoder and connector for them.
*/
ret = exynos_drm_device_register(dev);
if (ret)
goto err_vblank;
/*
* create and configure fb helper and also exynos specific
* fbdev object.
*/
ret = exynos_drm_fbdev_init(dev);
if (ret) {
DRM_ERROR("failed to initialize drm fbdev\n");
goto err_drm_device;
}
return 0;
err_drm_device:
exynos_drm_device_unregister(dev);
err_vblank:
drm_vblank_cleanup(dev);
err_crtc:
drm_mode_config_cleanup(dev);
kfree(private);
return ret;
}
static int exynos_drm_unload(struct drm_device *dev)
{
DRM_DEBUG_DRIVER("%s\n", __FILE__);
exynos_drm_fbdev_fini(dev);
exynos_drm_device_unregister(dev);
drm_vblank_cleanup(dev);
drm_kms_helper_poll_fini(dev);
drm_mode_config_cleanup(dev);
kfree(dev->dev_private);
dev->dev_private = NULL;
return 0;
}
static void exynos_drm_preclose(struct drm_device *dev,
struct drm_file *file_priv)
{
struct exynos_drm_private *dev_priv = dev->dev_private;
/*
* drm framework frees all events at release time,
* so private event list should be cleared.
*/
if (!list_empty(&dev_priv->pageflip_event_list))
INIT_LIST_HEAD(&dev_priv->pageflip_event_list);
}
static void exynos_drm_lastclose(struct drm_device *dev)
{
DRM_DEBUG_DRIVER("%s\n", __FILE__);
exynos_drm_fbdev_restore_mode(dev);
}
static struct vm_operations_struct exynos_drm_gem_vm_ops = {
.fault = exynos_drm_gem_fault,
.open = drm_gem_vm_open,
.close = drm_gem_vm_close,
};
static struct drm_ioctl_desc exynos_ioctls[] = {
DRM_IOCTL_DEF_DRV(EXYNOS_GEM_CREATE, exynos_drm_gem_create_ioctl,
DRM_UNLOCKED | DRM_AUTH),
DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MAP_OFFSET,
exynos_drm_gem_map_offset_ioctl, DRM_UNLOCKED |
DRM_AUTH),
DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
};
static struct drm_driver exynos_drm_driver = {
.driver_features = DRIVER_HAVE_IRQ | DRIVER_BUS_PLATFORM |
DRIVER_MODESET | DRIVER_GEM,
.load = exynos_drm_load,
.unload = exynos_drm_unload,
.preclose = exynos_drm_preclose,
.lastclose = exynos_drm_lastclose,
.get_vblank_counter = drm_vblank_count,
.enable_vblank = exynos_drm_crtc_enable_vblank,
.disable_vblank = exynos_drm_crtc_disable_vblank,
.gem_init_object = exynos_drm_gem_init_object,
.gem_free_object = exynos_drm_gem_free_object,
.gem_vm_ops = &exynos_drm_gem_vm_ops,
.dumb_create = exynos_drm_gem_dumb_create,
.dumb_map_offset = exynos_drm_gem_dumb_map_offset,
.dumb_destroy = exynos_drm_gem_dumb_destroy,
.ioctls = exynos_ioctls,
.fops = {
.owner = THIS_MODULE,
.open = drm_open,
.mmap = exynos_drm_gem_mmap,
.poll = drm_poll,
.read = drm_read,
.unlocked_ioctl = drm_ioctl,
.release = drm_release,
},
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
};
static int exynos_drm_platform_probe(struct platform_device *pdev)
{
DRM_DEBUG_DRIVER("%s\n", __FILE__);
exynos_drm_driver.num_ioctls = DRM_ARRAY_SIZE(exynos_ioctls);
return drm_platform_init(&exynos_drm_driver, pdev);
}
static int exynos_drm_platform_remove(struct platform_device *pdev)
{
DRM_DEBUG_DRIVER("%s\n", __FILE__);
drm_platform_exit(&exynos_drm_driver, pdev);
return 0;
}
static struct platform_driver exynos_drm_platform_driver = {
.probe = exynos_drm_platform_probe,
.remove = __devexit_p(exynos_drm_platform_remove),
.driver = {
.owner = THIS_MODULE,
.name = DRIVER_NAME,
},
};
static int __init exynos_drm_init(void)
{
DRM_DEBUG_DRIVER("%s\n", __FILE__);
return platform_driver_register(&exynos_drm_platform_driver);
}
static void __exit exynos_drm_exit(void)
{
DRM_DEBUG_DRIVER("%s\n", __FILE__);
platform_driver_unregister(&exynos_drm_platform_driver);
}
module_init(exynos_drm_init);
module_exit(exynos_drm_exit);
MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>");
MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
MODULE_AUTHOR("Seung-Woo Kim <sw0312.kim@samsung.com>");
MODULE_DESCRIPTION("Samsung SoC DRM Driver");
MODULE_LICENSE("GPL");
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