]> Git Repo - linux.git/blob - drivers/gpu/drm/omapdrm/dss/display.c
Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
[linux.git] / drivers / gpu / drm / omapdrm / dss / display.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (C) 2009 Nokia Corporation
4  * Author: Tomi Valkeinen <[email protected]>
5  *
6  * Some code and ideas taken from drivers/video/omap/ driver
7  * by Imre Deak.
8  */
9
10 #define DSS_SUBSYS_NAME "DISPLAY"
11
12 #include <linux/kernel.h>
13 #include <linux/of.h>
14
15 #include <drm/drm_connector.h>
16 #include <drm/drm_modes.h>
17
18 #include "omapdss.h"
19
20 static int disp_num_counter;
21
22 void omapdss_display_init(struct omap_dss_device *dssdev)
23 {
24         int id;
25
26         /*
27          * Note: this presumes that all displays either have an DT alias, or
28          * none has.
29          */
30         id = of_alias_get_id(dssdev->dev->of_node, "display");
31         if (id < 0)
32                 id = disp_num_counter++;
33
34         /* Use 'label' property for name, if it exists */
35         of_property_read_string(dssdev->dev->of_node, "label", &dssdev->name);
36
37         if (dssdev->name == NULL)
38                 dssdev->name = devm_kasprintf(dssdev->dev, GFP_KERNEL,
39                                               "display%u", id);
40 }
41 EXPORT_SYMBOL_GPL(omapdss_display_init);
42
43 int omapdss_display_get_modes(struct drm_connector *connector,
44                               const struct videomode *vm)
45 {
46         struct drm_display_mode *mode;
47
48         mode = drm_mode_create(connector->dev);
49         if (!mode)
50                 return 0;
51
52         drm_display_mode_from_videomode(vm, mode);
53
54         mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
55         drm_mode_set_name(mode);
56         drm_mode_probed_add(connector, mode);
57
58         return 1;
59 }
60 EXPORT_SYMBOL_GPL(omapdss_display_get_modes);
This page took 0.031592 seconds and 4 git commands to generate.