]>
Commit | Line | Data |
---|---|---|
1802d0be | 1 | // SPDX-License-Identifier: GPL-2.0-only |
a189d28e RD |
2 | /* |
3 | * ARC PGU DRM driver. | |
4 | * | |
5 | * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.com) | |
a189d28e RD |
6 | */ |
7 | ||
a189d28e | 8 | #include <drm/drm_atomic_helper.h> |
2f69deb1 | 9 | #include <drm/drm_device.h> |
fcd70cd3 | 10 | #include <drm/drm_probe_helper.h> |
a189d28e RD |
11 | |
12 | #include "arcpgu.h" | |
13 | ||
14 | #define XRES_DEF 640 | |
15 | #define YRES_DEF 480 | |
16 | ||
17 | #define XRES_MAX 8192 | |
18 | #define YRES_MAX 8192 | |
19 | ||
20 | ||
21 | struct arcpgu_drm_connector { | |
22 | struct drm_connector connector; | |
a189d28e RD |
23 | }; |
24 | ||
25 | static int arcpgu_drm_connector_get_modes(struct drm_connector *connector) | |
26 | { | |
27 | int count; | |
28 | ||
29 | count = drm_add_modes_noedid(connector, XRES_MAX, YRES_MAX); | |
30 | drm_set_preferred_mode(connector, XRES_DEF, YRES_DEF); | |
31 | return count; | |
32 | } | |
33 | ||
a189d28e RD |
34 | static void arcpgu_drm_connector_destroy(struct drm_connector *connector) |
35 | { | |
36 | drm_connector_unregister(connector); | |
37 | drm_connector_cleanup(connector); | |
38 | } | |
39 | ||
40 | static const struct drm_connector_helper_funcs | |
41 | arcpgu_drm_connector_helper_funcs = { | |
42 | .get_modes = arcpgu_drm_connector_get_modes, | |
43 | }; | |
44 | ||
45 | static const struct drm_connector_funcs arcpgu_drm_connector_funcs = { | |
a189d28e | 46 | .reset = drm_atomic_helper_connector_reset, |
a189d28e RD |
47 | .fill_modes = drm_helper_probe_single_connector_modes, |
48 | .destroy = arcpgu_drm_connector_destroy, | |
49 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, | |
50 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, | |
51 | }; | |
52 | ||
53 | static struct drm_encoder_funcs arcpgu_drm_encoder_funcs = { | |
54 | .destroy = drm_encoder_cleanup, | |
55 | }; | |
56 | ||
57 | int arcpgu_drm_sim_init(struct drm_device *drm, struct device_node *np) | |
58 | { | |
59 | struct arcpgu_drm_connector *arcpgu_connector; | |
b46310ee | 60 | struct drm_encoder *encoder; |
a189d28e RD |
61 | struct drm_connector *connector; |
62 | int ret; | |
63 | ||
64 | encoder = devm_kzalloc(drm->dev, sizeof(*encoder), GFP_KERNEL); | |
65 | if (encoder == NULL) | |
66 | return -ENOMEM; | |
67 | ||
b46310ee DV |
68 | encoder->possible_crtcs = 1; |
69 | encoder->possible_clones = 0; | |
a189d28e | 70 | |
b46310ee | 71 | ret = drm_encoder_init(drm, encoder, &arcpgu_drm_encoder_funcs, |
a189d28e RD |
72 | DRM_MODE_ENCODER_VIRTUAL, NULL); |
73 | if (ret) | |
74 | return ret; | |
75 | ||
76 | arcpgu_connector = devm_kzalloc(drm->dev, sizeof(*arcpgu_connector), | |
77 | GFP_KERNEL); | |
78 | if (!arcpgu_connector) { | |
79 | ret = -ENOMEM; | |
80 | goto error_encoder_cleanup; | |
81 | } | |
82 | ||
83 | connector = &arcpgu_connector->connector; | |
84 | drm_connector_helper_add(connector, &arcpgu_drm_connector_helper_funcs); | |
85 | ||
86 | ret = drm_connector_init(drm, connector, &arcpgu_drm_connector_funcs, | |
87 | DRM_MODE_CONNECTOR_VIRTUAL); | |
88 | if (ret < 0) { | |
89 | dev_err(drm->dev, "failed to initialize drm connector\n"); | |
90 | goto error_encoder_cleanup; | |
91 | } | |
92 | ||
cde4c44d | 93 | ret = drm_connector_attach_encoder(connector, encoder); |
a189d28e RD |
94 | if (ret < 0) { |
95 | dev_err(drm->dev, "could not attach connector to encoder\n"); | |
96 | drm_connector_unregister(connector); | |
97 | goto error_connector_cleanup; | |
98 | } | |
99 | ||
a189d28e RD |
100 | return 0; |
101 | ||
102 | error_connector_cleanup: | |
103 | drm_connector_cleanup(connector); | |
104 | ||
105 | error_encoder_cleanup: | |
b46310ee | 106 | drm_encoder_cleanup(encoder); |
a189d28e RD |
107 | return ret; |
108 | } |