]>
Commit | Line | Data |
---|---|---|
1de72faf DV |
1 | /* |
2 | * Copyright (c) 2016 Intel Corporation | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided that | |
6 | * the above copyright notice appear in all copies and that both that copyright | |
7 | * notice and this permission notice appear in supporting documentation, and | |
8 | * that the name of the copyright holders not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. The copyright holders make no representations | |
11 | * about the suitability of this software for any purpose. It is provided "as | |
12 | * is" without express or implied warranty. | |
13 | * | |
14 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
16 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
19 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
20 | * OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
23 | #include <drm/drm_modeset_helper.h> | |
24 | #include <drm/drm_plane_helper.h> | |
25 | ||
26 | /** | |
27 | * DOC: aux kms helpers | |
28 | * | |
29 | * This helper library contains various one-off functions which don't really fit | |
30 | * anywhere else in the DRM modeset helper library. | |
31 | */ | |
32 | ||
33 | /** | |
34 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the | |
35 | * connector list | |
36 | * @dev: drm device to operate on | |
37 | * | |
38 | * Some userspace presumes that the first connected connector is the main | |
39 | * display, where it's supposed to display e.g. the login screen. For | |
40 | * laptops, this should be the main panel. Use this function to sort all | |
27bfa74b | 41 | * (eDP/LVDS/DSI) panels to the front of the connector list, instead of |
1de72faf DV |
42 | * painstakingly trying to initialize them in the right order. |
43 | */ | |
44 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) | |
45 | { | |
46 | struct drm_connector *connector, *tmp; | |
47 | struct list_head panel_list; | |
48 | ||
49 | INIT_LIST_HEAD(&panel_list); | |
50 | ||
c36a3254 | 51 | spin_lock_irq(&dev->mode_config.connector_list_lock); |
1de72faf DV |
52 | list_for_each_entry_safe(connector, tmp, |
53 | &dev->mode_config.connector_list, head) { | |
54 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || | |
27bfa74b JN |
55 | connector->connector_type == DRM_MODE_CONNECTOR_eDP || |
56 | connector->connector_type == DRM_MODE_CONNECTOR_DSI) | |
1de72faf DV |
57 | list_move_tail(&connector->head, &panel_list); |
58 | } | |
59 | ||
60 | list_splice(&panel_list, &dev->mode_config.connector_list); | |
c36a3254 | 61 | spin_unlock_irq(&dev->mode_config.connector_list_lock); |
1de72faf DV |
62 | } |
63 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); | |
64 | ||
65 | /** | |
66 | * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata | |
c02f39ac | 67 | * @dev: DRM device |
1de72faf DV |
68 | * @fb: drm_framebuffer object to fill out |
69 | * @mode_cmd: metadata from the userspace fb creation request | |
70 | * | |
71 | * This helper can be used in a drivers fb_create callback to pre-fill the fb's | |
72 | * metadata fields. | |
73 | */ | |
a3f913ca VS |
74 | void drm_helper_mode_fill_fb_struct(struct drm_device *dev, |
75 | struct drm_framebuffer *fb, | |
1de72faf DV |
76 | const struct drm_mode_fb_cmd2 *mode_cmd) |
77 | { | |
78 | int i; | |
79 | ||
95bce760 | 80 | fb->dev = dev; |
6a0f9ebf | 81 | fb->format = drm_get_format_info(dev, mode_cmd); |
1de72faf DV |
82 | fb->width = mode_cmd->width; |
83 | fb->height = mode_cmd->height; | |
84 | for (i = 0; i < 4; i++) { | |
85 | fb->pitches[i] = mode_cmd->pitches[i]; | |
86 | fb->offsets[i] = mode_cmd->offsets[i]; | |
1de72faf | 87 | } |
bae781b2 | 88 | fb->modifier = mode_cmd->modifier[0]; |
1de72faf DV |
89 | fb->flags = mode_cmd->flags; |
90 | } | |
91 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); | |
92 | ||
93 | /* | |
94 | * This is the minimal list of formats that seem to be safe for modeset use | |
95 | * with all current DRM drivers. Most hardware can actually support more | |
96 | * formats than this and drivers may specify a more accurate list when | |
97 | * creating the primary plane. However drivers that still call | |
98 | * drm_plane_init() will use this minimal format list as the default. | |
99 | */ | |
100 | static const uint32_t safe_modeset_formats[] = { | |
101 | DRM_FORMAT_XRGB8888, | |
102 | DRM_FORMAT_ARGB8888, | |
103 | }; | |
104 | ||
105 | static struct drm_plane *create_primary_plane(struct drm_device *dev) | |
106 | { | |
107 | struct drm_plane *primary; | |
108 | int ret; | |
109 | ||
110 | primary = kzalloc(sizeof(*primary), GFP_KERNEL); | |
111 | if (primary == NULL) { | |
112 | DRM_DEBUG_KMS("Failed to allocate primary plane\n"); | |
113 | return NULL; | |
114 | } | |
115 | ||
116 | /* | |
117 | * Remove the format_default field from drm_plane when dropping | |
118 | * this helper. | |
119 | */ | |
120 | primary->format_default = true; | |
121 | ||
122 | /* possible_crtc's will be filled in later by crtc_init */ | |
123 | ret = drm_universal_plane_init(dev, primary, 0, | |
124 | &drm_primary_helper_funcs, | |
125 | safe_modeset_formats, | |
126 | ARRAY_SIZE(safe_modeset_formats), | |
e6fc3b68 | 127 | NULL, |
1de72faf DV |
128 | DRM_PLANE_TYPE_PRIMARY, NULL); |
129 | if (ret) { | |
130 | kfree(primary); | |
131 | primary = NULL; | |
132 | } | |
133 | ||
134 | return primary; | |
135 | } | |
136 | ||
137 | /** | |
138 | * drm_crtc_init - Legacy CRTC initialization function | |
139 | * @dev: DRM device | |
140 | * @crtc: CRTC object to init | |
141 | * @funcs: callbacks for the new CRTC | |
142 | * | |
143 | * Initialize a CRTC object with a default helper-provided primary plane and no | |
144 | * cursor plane. | |
145 | * | |
146 | * Returns: | |
147 | * Zero on success, error code on failure. | |
148 | */ | |
149 | int drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, | |
150 | const struct drm_crtc_funcs *funcs) | |
151 | { | |
152 | struct drm_plane *primary; | |
153 | ||
154 | primary = create_primary_plane(dev); | |
155 | return drm_crtc_init_with_planes(dev, crtc, primary, NULL, funcs, | |
156 | NULL); | |
157 | } | |
158 | EXPORT_SYMBOL(drm_crtc_init); |