[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / drm_kms_helper_common.c

/*
 * 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/module.h>
#include <drm/drmP.h>

#include "drm_crtc_helper_internal.h"

MODULE_AUTHOR("David Airlie, Jesse Barnes");
MODULE_DESCRIPTION("DRM KMS helper");
MODULE_LICENSE("GPL and additional rights");

#if IS_ENABLED(CONFIG_DRM_LOAD_EDID_FIRMWARE)

/* Backward compatibility for drm_kms_helper.edid_firmware */
static int edid_firmware_set(const char *val, const struct kernel_param *kp)
{
	DRM_NOTE("drm_kms_firmware.edid_firmware is deprecated, please use drm.edid_firmware intead.\n");

	return __drm_set_edid_firmware_path(val);
}

static int edid_firmware_get(char *buffer, const struct kernel_param *kp)
{
	return __drm_get_edid_firmware_path(buffer, PAGE_SIZE);
}

static const struct kernel_param_ops edid_firmware_ops = {
	.set = edid_firmware_set,
	.get = edid_firmware_get,
};

module_param_cb(edid_firmware, &edid_firmware_ops, NULL, 0644);
__MODULE_PARM_TYPE(edid_firmware, "charp");
MODULE_PARM_DESC(edid_firmware,
		 "DEPRECATED. Use drm.edid_firmware module parameter instead.");

#endif

static int __init drm_kms_helper_init(void)
{
	int ret;

	/* Call init functions from specific kms helpers here */
	ret = drm_fb_helper_modinit();
	if (ret < 0)
		goto out;

	ret = drm_dp_aux_dev_init();
	if (ret < 0)
		goto out;

out:
	return ret;
}

static void __exit drm_kms_helper_exit(void)
{
	/* Call exit functions from specific kms helpers here */
	drm_dp_aux_dev_exit();
}

module_init(drm_kms_helper_init);
module_exit(drm_kms_helper_exit);
Commit	Line	Data
70412cfa RA	1	/*
	2	* Copyright © 2015 Intel Corporation
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice (including the next
	12	* paragraph) shall be included in all copies or substantial portions of the
	13	* Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
	21	* IN THE SOFTWARE.
	22	*
	23	* Authors:
	24	* Rafael Antognolli <rafael.antognolli@intel.com>
	25	*
	26	*/
	27
b0b7d372	28	#include <linux/module.h>
ac6c35a4	29	#include <drm/drmP.h>
e15c8f4b DV	30
e15c8f4b DV	31	#include "drm_crtc_helper_internal.h"
70412cfa RA	32
	33	MODULE_AUTHOR("David Airlie, Jesse Barnes");
	34	MODULE_DESCRIPTION("DRM KMS helper");
	35	MODULE_LICENSE("GPL and additional rights");
	36
ac6c35a4 JN	37	#if IS_ENABLED(CONFIG_DRM_LOAD_EDID_FIRMWARE)
	38
	39	/* Backward compatibility for drm_kms_helper.edid_firmware */
	40	static int edid_firmware_set(const char val, const struct kernel_param kp)
	41	{
	42	DRM_NOTE("drm_kms_firmware.edid_firmware is deprecated, please use drm.edid_firmware intead.\n");
	43
	44	return __drm_set_edid_firmware_path(val);
	45	}
	46
	47	static int edid_firmware_get(char buffer, const struct kernel_param kp)
	48	{
	49	return __drm_get_edid_firmware_path(buffer, PAGE_SIZE);
	50	}
	51
	52	static const struct kernel_param_ops edid_firmware_ops = {
	53	.set = edid_firmware_set,
	54	.get = edid_firmware_get,
	55	};
	56
	57	module_param_cb(edid_firmware, &edid_firmware_ops, NULL, 0644);
	58	__MODULE_PARM_TYPE(edid_firmware, "charp");
	59	MODULE_PARM_DESC(edid_firmware,
	60	"DEPRECATED. Use drm.edid_firmware module parameter instead.");
	61
	62	#endif
	63
70412cfa RA	64	static int __init drm_kms_helper_init(void)
70412cfa RA	65	{
e94cb37b RA	66	int ret;
e94cb37b RA	67
70412cfa	68	/* Call init functions from specific kms helpers here */
e94cb37b RA	69	ret = drm_fb_helper_modinit();
	70	if (ret < 0)
	71	goto out;
	72
	73	ret = drm_dp_aux_dev_init();
	74	if (ret < 0)
	75	goto out;
	76
	77	out:
	78	return ret;
70412cfa RA	79	}
	80
	81	static void __exit drm_kms_helper_exit(void)
	82	{
	83	/* Call exit functions from specific kms helpers here */
e94cb37b	84	drm_dp_aux_dev_exit();
70412cfa RA	85	}
	86
	87	module_init(drm_kms_helper_init);
	88	module_exit(drm_kms_helper_exit);