1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2009 Nokia Corporation
4*4882a593Smuzhiyun * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Some code and ideas taken from drivers/video/omap/ driver
7*4882a593Smuzhiyun * by Imre Deak.
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #define DSS_SUBSYS_NAME "DISPLAY"
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/kernel.h>
13*4882a593Smuzhiyun #include <linux/of.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include <drm/drm_connector.h>
16*4882a593Smuzhiyun #include <drm/drm_modes.h>
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun #include "omapdss.h"
19*4882a593Smuzhiyun
20*4882a593Smuzhiyun static int disp_num_counter;
21*4882a593Smuzhiyun
omapdss_display_init(struct omap_dss_device * dssdev)22*4882a593Smuzhiyun void omapdss_display_init(struct omap_dss_device *dssdev)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun int id;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun /*
27*4882a593Smuzhiyun * Note: this presumes that all displays either have an DT alias, or
28*4882a593Smuzhiyun * none has.
29*4882a593Smuzhiyun */
30*4882a593Smuzhiyun id = of_alias_get_id(dssdev->dev->of_node, "display");
31*4882a593Smuzhiyun if (id < 0)
32*4882a593Smuzhiyun id = disp_num_counter++;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun /* Use 'label' property for name, if it exists */
35*4882a593Smuzhiyun of_property_read_string(dssdev->dev->of_node, "label", &dssdev->name);
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun if (dssdev->name == NULL)
38*4882a593Smuzhiyun dssdev->name = devm_kasprintf(dssdev->dev, GFP_KERNEL,
39*4882a593Smuzhiyun "display%u", id);
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(omapdss_display_init);
42*4882a593Smuzhiyun
omapdss_display_get_modes(struct drm_connector * connector,const struct videomode * vm)43*4882a593Smuzhiyun int omapdss_display_get_modes(struct drm_connector *connector,
44*4882a593Smuzhiyun const struct videomode *vm)
45*4882a593Smuzhiyun {
46*4882a593Smuzhiyun struct drm_display_mode *mode;
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun mode = drm_mode_create(connector->dev);
49*4882a593Smuzhiyun if (!mode)
50*4882a593Smuzhiyun return 0;
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun drm_display_mode_from_videomode(vm, mode);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
55*4882a593Smuzhiyun drm_mode_set_name(mode);
56*4882a593Smuzhiyun drm_mode_probed_add(connector, mode);
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun return 1;
59*4882a593Smuzhiyun }
60*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(omapdss_display_get_modes);
61