linux/drivers/gpu/drm/exynos/exynos_drm_drv.c
Inki Dae 52c68814cd drm/exynos: extend vblank off delay time.
some platform could be entering to sleep after short time once lcd panel off
but before that vblank could be off by vblank off delay feature. at that time,
vblank doesn't have the pair between vblank_get/put. so this path makes vblank
off delay to have enough.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
2011-12-29 11:21:42 +09:00

265 lines
6.9 KiB
C

/*
* 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"
#include "exynos_drm_plane.h"
#define DRIVER_NAME "exynos"
#define DRIVER_DESC "Samsung SoC DRM"
#define DRIVER_DATE "20110530"
#define DRIVER_MAJOR 1
#define DRIVER_MINOR 0
#define VBLANK_OFF_DELAY 50000
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;
}
for (nr = 0; nr < MAX_PLANE; nr++) {
ret = exynos_plane_init(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;
}
drm_vblank_offdelay = VBLANK_OFF_DELAY;
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),
DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
DRM_UNLOCKED | DRM_AUTH),
};
static const struct file_operations exynos_drm_driver_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,
};
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 = &exynos_drm_driver_fops,
.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");