Rev 6084 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
6084 | serge | 1 | /* |
2 | * Copyright © 2015 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 | /** |
||
25 | * DOC: atomic modeset support |
||
26 | * |
||
27 | * The functions here implement the state management and hardware programming |
||
28 | * dispatch required by the atomic modeset infrastructure. |
||
29 | * See intel_atomic_plane.c for the plane-specific atomic functionality. |
||
30 | */ |
||
31 | |||
32 | #include |
||
33 | #include |
||
34 | #include |
||
35 | #include |
||
36 | #include "intel_drv.h" |
||
37 | |||
38 | /** |
||
39 | * intel_connector_atomic_get_property - fetch connector property value |
||
40 | * @connector: connector to fetch property for |
||
41 | * @state: state containing the property value |
||
42 | * @property: property to look up |
||
43 | * @val: pointer to write property value into |
||
44 | * |
||
45 | * The DRM core does not store shadow copies of properties for |
||
46 | * atomic-capable drivers. This entrypoint is used to fetch |
||
47 | * the current value of a driver-specific connector property. |
||
48 | */ |
||
49 | int |
||
50 | intel_connector_atomic_get_property(struct drm_connector *connector, |
||
51 | const struct drm_connector_state *state, |
||
52 | struct drm_property *property, |
||
53 | uint64_t *val) |
||
54 | { |
||
55 | int i; |
||
56 | |||
57 | /* |
||
58 | * TODO: We only have atomic modeset for planes at the moment, so the |
||
59 | * crtc/connector code isn't quite ready yet. Until it's ready, |
||
60 | * continue to look up all property values in the DRM's shadow copy |
||
61 | * in obj->properties->values[]. |
||
62 | * |
||
63 | * When the crtc/connector state work matures, this function should |
||
64 | * be updated to read the values out of the state structure instead. |
||
65 | */ |
||
66 | for (i = 0; i < connector->base.properties->count; i++) { |
||
67 | if (connector->base.properties->properties[i] == property) { |
||
68 | *val = connector->base.properties->values[i]; |
||
69 | return 0; |
||
70 | } |
||
71 | } |
||
72 | |||
73 | return -EINVAL; |
||
74 | } |
||
75 | |||
76 | /* |
||
77 | * intel_crtc_duplicate_state - duplicate crtc state |
||
78 | * @crtc: drm crtc |
||
79 | * |
||
80 | * Allocates and returns a copy of the crtc state (both common and |
||
81 | * Intel-specific) for the specified crtc. |
||
82 | * |
||
83 | * Returns: The newly allocated crtc state, or NULL on failure. |
||
84 | */ |
||
85 | struct drm_crtc_state * |
||
86 | intel_crtc_duplicate_state(struct drm_crtc *crtc) |
||
87 | { |
||
88 | struct intel_crtc_state *crtc_state; |
||
89 | |||
90 | crtc_state = kmemdup(crtc->state, sizeof(*crtc_state), GFP_KERNEL); |
||
91 | if (!crtc_state) |
||
92 | return NULL; |
||
93 | |||
94 | __drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->base); |
||
95 | |||
96 | crtc_state->update_pipe = false; |
||
6937 | serge | 97 | crtc_state->disable_lp_wm = false; |
98 | crtc_state->disable_cxsr = false; |
||
99 | crtc_state->update_wm_pre = false; |
||
100 | crtc_state->update_wm_post = false; |
||
6084 | serge | 101 | |
102 | return &crtc_state->base; |
||
103 | } |
||
104 | |||
105 | /** |
||
106 | * intel_crtc_destroy_state - destroy crtc state |
||
107 | * @crtc: drm crtc |
||
108 | * |
||
109 | * Destroys the crtc state (both common and Intel-specific) for the |
||
110 | * specified crtc. |
||
111 | */ |
||
112 | void |
||
113 | intel_crtc_destroy_state(struct drm_crtc *crtc, |
||
114 | struct drm_crtc_state *state) |
||
115 | { |
||
116 | drm_atomic_helper_crtc_destroy_state(crtc, state); |
||
117 | } |
||
118 | |||
119 | /** |
||
120 | * intel_atomic_setup_scalers() - setup scalers for crtc per staged requests |
||
121 | * @dev: DRM device |
||
122 | * @crtc: intel crtc |
||
123 | * @crtc_state: incoming crtc_state to validate and setup scalers |
||
124 | * |
||
125 | * This function sets up scalers based on staged scaling requests for |
||
126 | * a @crtc and its planes. It is called from crtc level check path. If request |
||
127 | * is a supportable request, it attaches scalers to requested planes and crtc. |
||
128 | * |
||
129 | * This function takes into account the current scaler(s) in use by any planes |
||
130 | * not being part of this atomic state |
||
131 | * |
||
132 | * Returns: |
||
133 | * 0 - scalers were setup succesfully |
||
134 | * error code - otherwise |
||
135 | */ |
||
136 | int intel_atomic_setup_scalers(struct drm_device *dev, |
||
137 | struct intel_crtc *intel_crtc, |
||
138 | struct intel_crtc_state *crtc_state) |
||
139 | { |
||
140 | struct drm_plane *plane = NULL; |
||
141 | struct intel_plane *intel_plane; |
||
142 | struct intel_plane_state *plane_state = NULL; |
||
143 | struct intel_crtc_scaler_state *scaler_state = |
||
144 | &crtc_state->scaler_state; |
||
145 | struct drm_atomic_state *drm_state = crtc_state->base.state; |
||
146 | int num_scalers_need; |
||
147 | int i, j; |
||
148 | |||
149 | num_scalers_need = hweight32(scaler_state->scaler_users); |
||
150 | |||
151 | /* |
||
152 | * High level flow: |
||
153 | * - staged scaler requests are already in scaler_state->scaler_users |
||
154 | * - check whether staged scaling requests can be supported |
||
155 | * - add planes using scalers that aren't in current transaction |
||
156 | * - assign scalers to requested users |
||
157 | * - as part of plane commit, scalers will be committed |
||
158 | * (i.e., either attached or detached) to respective planes in hw |
||
159 | * - as part of crtc_commit, scaler will be either attached or detached |
||
160 | * to crtc in hw |
||
161 | */ |
||
162 | |||
163 | /* fail if required scalers > available scalers */ |
||
164 | if (num_scalers_need > intel_crtc->num_scalers){ |
||
165 | DRM_DEBUG_KMS("Too many scaling requests %d > %d\n", |
||
166 | num_scalers_need, intel_crtc->num_scalers); |
||
167 | return -EINVAL; |
||
168 | } |
||
169 | |||
170 | /* walkthrough scaler_users bits and start assigning scalers */ |
||
171 | for (i = 0; i < sizeof(scaler_state->scaler_users) * 8; i++) { |
||
172 | int *scaler_id; |
||
173 | const char *name; |
||
174 | int idx; |
||
175 | |||
176 | /* skip if scaler not required */ |
||
177 | if (!(scaler_state->scaler_users & (1 << i))) |
||
178 | continue; |
||
179 | |||
180 | if (i == SKL_CRTC_INDEX) { |
||
181 | name = "CRTC"; |
||
182 | idx = intel_crtc->base.base.id; |
||
183 | |||
184 | /* panel fitter case: assign as a crtc scaler */ |
||
185 | scaler_id = &scaler_state->scaler_id; |
||
186 | } else { |
||
187 | name = "PLANE"; |
||
188 | |||
189 | /* plane scaler case: assign as a plane scaler */ |
||
190 | /* find the plane that set the bit as scaler_user */ |
||
191 | plane = drm_state->planes[i]; |
||
192 | |||
193 | /* |
||
194 | * to enable/disable hq mode, add planes that are using scaler |
||
195 | * into this transaction |
||
196 | */ |
||
197 | if (!plane) { |
||
198 | struct drm_plane_state *state; |
||
199 | plane = drm_plane_from_index(dev, i); |
||
200 | state = drm_atomic_get_plane_state(drm_state, plane); |
||
201 | if (IS_ERR(state)) { |
||
202 | DRM_DEBUG_KMS("Failed to add [PLANE:%d] to drm_state\n", |
||
203 | plane->base.id); |
||
204 | return PTR_ERR(state); |
||
205 | } |
||
206 | |||
207 | /* |
||
208 | * the plane is added after plane checks are run, |
||
209 | * but since this plane is unchanged just do the |
||
210 | * minimum required validation. |
||
211 | */ |
||
212 | crtc_state->base.planes_changed = true; |
||
213 | } |
||
214 | |||
215 | intel_plane = to_intel_plane(plane); |
||
216 | idx = plane->base.id; |
||
217 | |||
218 | /* plane on different crtc cannot be a scaler user of this crtc */ |
||
219 | if (WARN_ON(intel_plane->pipe != intel_crtc->pipe)) { |
||
220 | continue; |
||
221 | } |
||
222 | |||
223 | plane_state = to_intel_plane_state(drm_state->plane_states[i]); |
||
224 | scaler_id = &plane_state->scaler_id; |
||
225 | } |
||
226 | |||
227 | if (*scaler_id < 0) { |
||
228 | /* find a free scaler */ |
||
229 | for (j = 0; j < intel_crtc->num_scalers; j++) { |
||
230 | if (!scaler_state->scalers[j].in_use) { |
||
231 | scaler_state->scalers[j].in_use = 1; |
||
232 | *scaler_id = j; |
||
233 | DRM_DEBUG_KMS("Attached scaler id %u.%u to %s:%d\n", |
||
234 | intel_crtc->pipe, *scaler_id, name, idx); |
||
235 | break; |
||
236 | } |
||
237 | } |
||
238 | } |
||
239 | |||
240 | if (WARN_ON(*scaler_id < 0)) { |
||
241 | DRM_DEBUG_KMS("Cannot find scaler for %s:%d\n", name, idx); |
||
242 | continue; |
||
243 | } |
||
244 | |||
245 | /* set scaler mode */ |
||
246 | if (num_scalers_need == 1 && intel_crtc->pipe != PIPE_C) { |
||
247 | /* |
||
248 | * when only 1 scaler is in use on either pipe A or B, |
||
249 | * scaler 0 operates in high quality (HQ) mode. |
||
250 | * In this case use scaler 0 to take advantage of HQ mode |
||
251 | */ |
||
252 | *scaler_id = 0; |
||
253 | scaler_state->scalers[0].in_use = 1; |
||
254 | scaler_state->scalers[0].mode = PS_SCALER_MODE_HQ; |
||
255 | scaler_state->scalers[1].in_use = 0; |
||
256 | } else { |
||
257 | scaler_state->scalers[*scaler_id].mode = PS_SCALER_MODE_DYN; |
||
258 | } |
||
259 | } |
||
260 | |||
261 | return 0; |
||
262 | } |
||
263 | |||
264 | static void |
||
265 | intel_atomic_duplicate_dpll_state(struct drm_i915_private *dev_priv, |
||
266 | struct intel_shared_dpll_config *shared_dpll) |
||
267 | { |
||
268 | enum intel_dpll_id i; |
||
269 | |||
270 | /* Copy shared dpll state */ |
||
271 | for (i = 0; i < dev_priv->num_shared_dpll; i++) { |
||
272 | struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i]; |
||
273 | |||
274 | shared_dpll[i] = pll->config; |
||
275 | } |
||
276 | } |
||
277 | |||
278 | struct intel_shared_dpll_config * |
||
279 | intel_atomic_get_shared_dpll_state(struct drm_atomic_state *s) |
||
280 | { |
||
281 | struct intel_atomic_state *state = to_intel_atomic_state(s); |
||
282 | |||
283 | WARN_ON(!drm_modeset_is_locked(&s->dev->mode_config.connection_mutex)); |
||
284 | |||
285 | if (!state->dpll_set) { |
||
286 | state->dpll_set = true; |
||
287 | |||
288 | intel_atomic_duplicate_dpll_state(to_i915(s->dev), |
||
289 | state->shared_dpll); |
||
290 | } |
||
291 | |||
292 | return state->shared_dpll; |
||
293 | } |
||
294 | |||
295 | struct drm_atomic_state * |
||
296 | intel_atomic_state_alloc(struct drm_device *dev) |
||
297 | { |
||
298 | struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL); |
||
299 | |||
300 | if (!state || drm_atomic_state_init(dev, &state->base) < 0) { |
||
301 | kfree(state); |
||
302 | return NULL; |
||
303 | } |
||
304 | |||
305 | return &state->base; |
||
306 | } |
||
307 | |||
308 | void intel_atomic_state_clear(struct drm_atomic_state *s) |
||
309 | { |
||
310 | struct intel_atomic_state *state = to_intel_atomic_state(s); |
||
311 | drm_atomic_state_default_clear(&state->base); |
||
312 | state->dpll_set = false; |
||
313 | }>>>>>><>>> |