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/*
* Copyright © 2015 Intel Corporation
*
* 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
* THE AUTHORS OR COPYRIGHT HOLDERS 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.
*
* Authors:
* Rafael Antognolli <rafael.antognolli@intel.com>
*
*/
#include <linux/export.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include "drm_crtc_helper_internal.h"
#include "drm_panic_internal.h"
#if IS_ENABLED(CONFIG_DRM_FBDEV_EMULATION)
bool drm_fbdev_emulation = true;
EXPORT_SYMBOL(drm_fbdev_emulation);
module_param_named(fbdev_emulation, drm_fbdev_emulation, bool, 0600);
MODULE_PARM_DESC(fbdev_emulation, "Enable legacy fbdev emulation [default=true]");
int drm_fbdev_overalloc = CONFIG_DRM_FBDEV_OVERALLOC;
EXPORT_SYMBOL(drm_fbdev_overalloc);
module_param(drm_fbdev_overalloc, int, 0444);
MODULE_PARM_DESC(drm_fbdev_overalloc,
"Overallocation of the fbdev buffer (%) [default="
__MODULE_STRING(CONFIG_DRM_FBDEV_OVERALLOC) "]");
/*
* In order to keep user-space compatibility, we want in certain use-cases
* to keep leaking the fbdev physical address to the user-space program
* handling the fbdev buffer.
*
* This is a bad habit, essentially kept to support closed-source OpenGL
* drivers that should really be moved into open-source upstream projects
* instead of using legacy physical addresses in user space to communicate
* with other out-of-tree kernel modules.
*
* This module_param *should* be removed as soon as possible and be
* considered as a broken and legacy behaviour from a modern fbdev device.
*/
bool drm_leak_fbdev_smem;
EXPORT_SYMBOL(drm_leak_fbdev_smem);
#if IS_ENABLED(CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM)
module_param_unsafe(drm_leak_fbdev_smem, bool, 0600);
MODULE_PARM_DESC(drm_leak_fbdev_smem,
"Allow unsafe leaking fbdev physical smem address [default=false]");
#endif
#endif
static int __init drm_kms_helper_init(void)
{
return drm_panic_helper_init();
}
module_init(drm_kms_helper_init);
static void __exit drm_kms_helper_exit(void)
{
drm_panic_helper_exit();
}
module_exit(drm_kms_helper_exit);
MODULE_AUTHOR("David Airlie, Jesse Barnes");
MODULE_DESCRIPTION("DRM KMS helper");
MODULE_LICENSE("GPL and additional rights");
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