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ea2c67bb MR |
1 | /* |
2 | * Copyright © 2014 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | /** | |
cd524719 | 25 | * DOC: atomic plane helpers |
ea2c67bb MR |
26 | * |
27 | * The functions here are used by the atomic plane helper functions to | |
28 | * implement legacy plane updates (i.e., drm_plane->update_plane() and | |
29 | * drm_plane->disable_plane()). This allows plane updates to use the | |
30 | * atomic state infrastructure and perform plane updates as separate | |
31 | * prepare/check/commit/cleanup steps. | |
32 | */ | |
33 | ||
34 | #include <drm/drmP.h> | |
35 | #include <drm/drm_atomic_helper.h> | |
36 | #include <drm/drm_plane_helper.h> | |
37 | #include "intel_drv.h" | |
38 | ||
8e7d688b MR |
39 | /** |
40 | * intel_create_plane_state - create plane state object | |
41 | * @plane: drm plane | |
42 | * | |
43 | * Allocates a fresh plane state for the given plane and sets some of | |
44 | * the state values to sensible initial values. | |
45 | * | |
46 | * Returns: A newly allocated plane state, or NULL on failure | |
47 | */ | |
48 | struct intel_plane_state * | |
49 | intel_create_plane_state(struct drm_plane *plane) | |
50 | { | |
51 | struct intel_plane_state *state; | |
52 | ||
53 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
54 | if (!state) | |
55 | return NULL; | |
56 | ||
57 | state->base.plane = plane; | |
58 | state->base.rotation = BIT(DRM_ROTATE_0); | |
818ed961 | 59 | state->ckey.flags = I915_SET_COLORKEY_NONE; |
8e7d688b MR |
60 | |
61 | return state; | |
62 | } | |
63 | ||
ea2c67bb MR |
64 | /** |
65 | * intel_plane_duplicate_state - duplicate plane state | |
66 | * @plane: drm plane | |
67 | * | |
68 | * Allocates and returns a copy of the plane state (both common and | |
69 | * Intel-specific) for the specified plane. | |
70 | * | |
8e7d688b | 71 | * Returns: The newly allocated plane state, or NULL on failure. |
ea2c67bb MR |
72 | */ |
73 | struct drm_plane_state * | |
74 | intel_plane_duplicate_state(struct drm_plane *plane) | |
75 | { | |
8e7d688b MR |
76 | struct drm_plane_state *state; |
77 | struct intel_plane_state *intel_state; | |
ea2c67bb | 78 | |
8e7d688b MR |
79 | if (WARN_ON(!plane->state)) |
80 | intel_state = intel_create_plane_state(plane); | |
ea2c67bb | 81 | else |
8e7d688b MR |
82 | intel_state = kmemdup(plane->state, sizeof(*intel_state), |
83 | GFP_KERNEL); | |
ea2c67bb | 84 | |
8e7d688b | 85 | if (!intel_state) |
ea2c67bb MR |
86 | return NULL; |
87 | ||
8e7d688b | 88 | state = &intel_state->base; |
f0c60574 ACO |
89 | |
90 | __drm_atomic_helper_plane_duplicate_state(plane, state); | |
ea2c67bb | 91 | |
8e7d688b | 92 | return state; |
ea2c67bb MR |
93 | } |
94 | ||
95 | /** | |
96 | * intel_plane_destroy_state - destroy plane state | |
97 | * @plane: drm plane | |
cd524719 | 98 | * @state: state object to destroy |
ea2c67bb MR |
99 | * |
100 | * Destroys the plane state (both common and Intel-specific) for the | |
101 | * specified plane. | |
102 | */ | |
103 | void | |
104 | intel_plane_destroy_state(struct drm_plane *plane, | |
105 | struct drm_plane_state *state) | |
106 | { | |
107 | drm_atomic_helper_plane_destroy_state(plane, state); | |
108 | } | |
109 | ||
110 | static int intel_plane_atomic_check(struct drm_plane *plane, | |
111 | struct drm_plane_state *state) | |
112 | { | |
113 | struct drm_crtc *crtc = state->crtc; | |
114 | struct intel_crtc *intel_crtc; | |
8c7b5ccb | 115 | struct intel_crtc_state *crtc_state; |
ea2c67bb MR |
116 | struct intel_plane *intel_plane = to_intel_plane(plane); |
117 | struct intel_plane_state *intel_state = to_intel_plane_state(state); | |
c389c9c4 | 118 | struct drm_crtc_state *drm_crtc_state; |
da20eabd | 119 | int ret; |
ea2c67bb | 120 | |
061e4b8d | 121 | crtc = crtc ? crtc : plane->state->crtc; |
ea2c67bb MR |
122 | intel_crtc = to_intel_crtc(crtc); |
123 | ||
c196e1d6 MR |
124 | /* |
125 | * Both crtc and plane->crtc could be NULL if we're updating a | |
126 | * property while the plane is disabled. We don't actually have | |
127 | * anything driver-specific we need to test in that case, so | |
128 | * just return success. | |
129 | */ | |
130 | if (!crtc) | |
131 | return 0; | |
132 | ||
c389c9c4 ML |
133 | drm_crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc); |
134 | if (WARN_ON(!drm_crtc_state)) | |
135 | return -EINVAL; | |
061e4b8d | 136 | |
c389c9c4 | 137 | crtc_state = to_intel_crtc_state(drm_crtc_state); |
8c7b5ccb | 138 | |
ea2c67bb MR |
139 | /* |
140 | * The original src/dest coordinates are stored in state->base, but | |
141 | * we want to keep another copy internal to our driver that we can | |
142 | * clip/modify ourselves. | |
143 | */ | |
144 | intel_state->src.x1 = state->src_x; | |
145 | intel_state->src.y1 = state->src_y; | |
146 | intel_state->src.x2 = state->src_x + state->src_w; | |
147 | intel_state->src.y2 = state->src_y + state->src_h; | |
148 | intel_state->dst.x1 = state->crtc_x; | |
149 | intel_state->dst.y1 = state->crtc_y; | |
150 | intel_state->dst.x2 = state->crtc_x + state->crtc_w; | |
151 | intel_state->dst.y2 = state->crtc_y + state->crtc_h; | |
152 | ||
153 | /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */ | |
154 | intel_state->clip.x1 = 0; | |
155 | intel_state->clip.y1 = 0; | |
156 | intel_state->clip.x2 = | |
8c7b5ccb | 157 | crtc_state->base.active ? crtc_state->pipe_src_w : 0; |
ea2c67bb | 158 | intel_state->clip.y2 = |
8c7b5ccb | 159 | crtc_state->base.active ? crtc_state->pipe_src_h : 0; |
ea2c67bb | 160 | |
3b7a5119 SJ |
161 | if (state->fb && intel_rotation_90_or_270(state->rotation)) { |
162 | if (!(state->fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || | |
163 | state->fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED)) { | |
164 | DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n"); | |
165 | return -EINVAL; | |
166 | } | |
167 | ||
168 | /* | |
169 | * 90/270 is not allowed with RGB64 16:16:16:16, | |
170 | * RGB 16-bit 5:6:5, and Indexed 8-bit. | |
171 | * TBD: Add RGB64 case once its added in supported format list. | |
172 | */ | |
173 | switch (state->fb->pixel_format) { | |
174 | case DRM_FORMAT_C8: | |
175 | case DRM_FORMAT_RGB565: | |
176 | DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n", | |
177 | drm_get_format_name(state->fb->pixel_format)); | |
178 | return -EINVAL; | |
179 | ||
180 | default: | |
181 | break; | |
182 | } | |
183 | } | |
184 | ||
061e4b8d ML |
185 | intel_state->visible = false; |
186 | ret = intel_plane->check_plane(plane, crtc_state, intel_state); | |
c389c9c4 | 187 | if (ret) |
da20eabd ML |
188 | return ret; |
189 | ||
190 | return intel_plane_atomic_calc_changes(&crtc_state->base, state); | |
ea2c67bb MR |
191 | } |
192 | ||
193 | static void intel_plane_atomic_update(struct drm_plane *plane, | |
194 | struct drm_plane_state *old_state) | |
195 | { | |
196 | struct intel_plane *intel_plane = to_intel_plane(plane); | |
197 | struct intel_plane_state *intel_state = | |
198 | to_intel_plane_state(plane->state); | |
199 | ||
ea2c67bb MR |
200 | intel_plane->commit_plane(plane, intel_state); |
201 | } | |
202 | ||
203 | const struct drm_plane_helper_funcs intel_plane_helper_funcs = { | |
204 | .prepare_fb = intel_prepare_plane_fb, | |
205 | .cleanup_fb = intel_cleanup_plane_fb, | |
206 | .atomic_check = intel_plane_atomic_check, | |
207 | .atomic_update = intel_plane_atomic_update, | |
208 | }; | |
209 | ||
a98b3431 MR |
210 | /** |
211 | * intel_plane_atomic_get_property - fetch plane property value | |
212 | * @plane: plane to fetch property for | |
213 | * @state: state containing the property value | |
214 | * @property: property to look up | |
215 | * @val: pointer to write property value into | |
216 | * | |
217 | * The DRM core does not store shadow copies of properties for | |
218 | * atomic-capable drivers. This entrypoint is used to fetch | |
219 | * the current value of a driver-specific plane property. | |
220 | */ | |
221 | int | |
222 | intel_plane_atomic_get_property(struct drm_plane *plane, | |
223 | const struct drm_plane_state *state, | |
224 | struct drm_property *property, | |
225 | uint64_t *val) | |
226 | { | |
aaed1aa5 TU |
227 | DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); |
228 | return -EINVAL; | |
a98b3431 MR |
229 | } |
230 | ||
231 | /** | |
232 | * intel_plane_atomic_set_property - set plane property value | |
233 | * @plane: plane to set property for | |
234 | * @state: state to update property value in | |
235 | * @property: property to set | |
236 | * @val: value to set property to | |
237 | * | |
238 | * Writes the specified property value for a plane into the provided atomic | |
239 | * state object. | |
240 | * | |
241 | * Returns 0 on success, -EINVAL on unrecognized properties | |
242 | */ | |
243 | int | |
244 | intel_plane_atomic_set_property(struct drm_plane *plane, | |
245 | struct drm_plane_state *state, | |
246 | struct drm_property *property, | |
247 | uint64_t val) | |
248 | { | |
aaed1aa5 TU |
249 | DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); |
250 | return -EINVAL; | |
a98b3431 | 251 | } |