blob: 8331739c3d085ca00a6639da41891fb614b23429 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/*
* i.MX drm driver
*
* Copyright (C) 2012 Sascha Hauer, Pengutronix
*
* Based on Samsung Exynos code
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/module.h>
#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include "imx-drm.h"
#define MAX_CONNECTOR 4
#define PREFERRED_BPP 16
static struct drm_fbdev_cma *fbdev_cma;
static int legacyfb_depth = 16;
module_param(legacyfb_depth, int, 0444);
static int __init imx_fb_helper_init(void)
{
struct drm_device *drm = imx_drm_device_get();
if (!drm)
return -EINVAL;
if (legacyfb_depth != 16 && legacyfb_depth != 32) {
pr_warn("i.MX legacyfb: invalid legacyfb_depth setting. defaulting to 16bpp\n");
legacyfb_depth = 16;
}
fbdev_cma = drm_fbdev_cma_init(drm, legacyfb_depth,
drm->mode_config.num_crtc, MAX_CONNECTOR);
if (IS_ERR(fbdev_cma)) {
imx_drm_device_put();
return PTR_ERR(fbdev_cma);
}
imx_drm_fb_helper_set(fbdev_cma);
return 0;
}
static void __exit imx_fb_helper_exit(void)
{
imx_drm_fb_helper_set(NULL);
drm_fbdev_cma_fini(fbdev_cma);
imx_drm_device_put();
}
late_initcall(imx_fb_helper_init);
module_exit(imx_fb_helper_exit);
MODULE_DESCRIPTION("Freescale i.MX legacy fb driver");
MODULE_AUTHOR("Sascha Hauer, Pengutronix");
MODULE_LICENSE("GPL");
|
