tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
28#include <linux/module.h>
29#include <drm/drmP.h>
30
31#include "drm_crtc_helper_internal.h"
32
33MODULE_AUTHOR("David Airlie, Jesse Barnes");
34MODULE_DESCRIPTION("DRM KMS helper");
35MODULE_LICENSE("GPL and additional rights");
36
37#if IS_ENABLED(CONFIG_DRM_LOAD_EDID_FIRMWARE)
38
39/* Backward compatibility for drm_kms_helper.edid_firmware */
40static 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
47static int edid_firmware_get(char *buffer, const struct kernel_param *kp)
48{
49 return __drm_get_edid_firmware_path(buffer, PAGE_SIZE);
50}
51
52static const struct kernel_param_ops edid_firmware_ops = {
53 .set = edid_firmware_set,
54 .get = edid_firmware_get,
55};
56
57module_param_cb(edid_firmware, &edid_firmware_ops, NULL, 0644);
58__MODULE_PARM_TYPE(edid_firmware, "charp");
59MODULE_PARM_DESC(edid_firmware,
60 "DEPRECATED. Use drm.edid_firmware module parameter instead.");
61
62#endif
63
64static int __init drm_kms_helper_init(void)
65{
66 int ret;
67
68 /* Call init functions from specific kms helpers here */
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
77out:
78 return ret;
79}
80
81static void __exit drm_kms_helper_exit(void)
82{
83 /* Call exit functions from specific kms helpers here */
84 drm_dp_aux_dev_exit();
85}
86
87module_init(drm_kms_helper_init);
88module_exit(drm_kms_helper_exit);