1 | // SPDX-License-Identifier: GPL-2.0+ |
---|---|
2 | /* |
3 | * Copyright (C) 2019-2022 Bootlin |
4 | * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com> |
5 | */ |
6 | |
7 | #include <linux/types.h> |
8 | |
9 | #include <drm/drm_atomic.h> |
10 | #include <drm/drm_atomic_helper.h> |
11 | #include <drm/drm_drv.h> |
12 | #include <drm/drm_gem_dma_helper.h> |
13 | #include <drm/drm_gem_framebuffer_helper.h> |
14 | #include <drm/drm_mode_config.h> |
15 | #include <drm/drm_panel.h> |
16 | #include <drm/drm_print.h> |
17 | #include <drm/drm_probe_helper.h> |
18 | #include <drm/drm_vblank.h> |
19 | |
20 | #include "logicvc_drm.h" |
21 | #include "logicvc_interface.h" |
22 | #include "logicvc_layer.h" |
23 | #include "logicvc_mode.h" |
24 | |
25 | static const struct drm_mode_config_funcs logicvc_mode_config_funcs = { |
26 | .fb_create = drm_gem_fb_create, |
27 | .atomic_check = drm_atomic_helper_check, |
28 | .atomic_commit = drm_atomic_helper_commit, |
29 | }; |
30 | |
31 | int logicvc_mode_init(struct logicvc_drm *logicvc) |
32 | { |
33 | struct drm_device *drm_dev = &logicvc->drm_dev; |
34 | struct drm_mode_config *mode_config = &drm_dev->mode_config; |
35 | struct logicvc_layer *layer_primary; |
36 | uint32_t preferred_depth; |
37 | int ret; |
38 | |
39 | ret = drm_vblank_init(dev: drm_dev, num_crtcs: mode_config->num_crtc); |
40 | if (ret) { |
41 | drm_err(drm_dev, "Failed to initialize vblank\n"); |
42 | return ret; |
43 | } |
44 | |
45 | layer_primary = logicvc_layer_get_primary(logicvc); |
46 | if (!layer_primary) { |
47 | drm_err(drm_dev, "Failed to get primary layer\n"); |
48 | return -EINVAL; |
49 | } |
50 | |
51 | preferred_depth = layer_primary->formats->depth; |
52 | |
53 | /* DRM counts alpha in depth, our driver doesn't. */ |
54 | if (layer_primary->formats->alpha) |
55 | preferred_depth += 8; |
56 | |
57 | mode_config->min_width = 64; |
58 | mode_config->max_width = 2048; |
59 | mode_config->min_height = 1; |
60 | mode_config->max_height = 2048; |
61 | mode_config->preferred_depth = preferred_depth; |
62 | mode_config->funcs = &logicvc_mode_config_funcs; |
63 | |
64 | drm_mode_config_reset(dev: drm_dev); |
65 | |
66 | drm_kms_helper_poll_init(dev: drm_dev); |
67 | |
68 | return 0; |
69 | } |
70 | |
71 | void logicvc_mode_fini(struct logicvc_drm *logicvc) |
72 | { |
73 | struct drm_device *drm_dev = &logicvc->drm_dev; |
74 | |
75 | drm_kms_helper_poll_fini(dev: drm_dev); |
76 | } |
77 |