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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 <drm/display/drm_dp_tunnel.h>
33#include <drm/drm_atomic.h>
34#include <drm/drm_atomic_helper.h>
35#include <drm/drm_fourcc.h>
36
37#include "i915_drv.h"
38#include "intel_atomic.h"
39#include "intel_cdclk.h"
40#include "intel_display_types.h"
41#include "intel_dp_tunnel.h"
42#include "intel_global_state.h"
43#include "intel_hdcp.h"
44#include "intel_psr.h"
45#include "intel_fb.h"
46#include "skl_universal_plane.h"
47
48/**
49 * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property.
50 * @connector: Connector to get the property for.
51 * @state: Connector state to retrieve the property from.
52 * @property: Property to retrieve.
53 * @val: Return value for the property.
54 *
55 * Returns the atomic property value for a digital connector.
56 */
57int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
58 const struct drm_connector_state *state,
59 struct drm_property *property,
60 u64 *val)
61{
62 struct drm_device *dev = connector->dev;
63 struct drm_i915_private *dev_priv = to_i915(dev);
64 const struct intel_digital_connector_state *intel_conn_state =
65 to_intel_digital_connector_state(state);
66
67 if (property == dev_priv->display.properties.force_audio)
68 *val = intel_conn_state->force_audio;
69 else if (property == dev_priv->display.properties.broadcast_rgb)
70 *val = intel_conn_state->broadcast_rgb;
71 else {
72 drm_dbg_atomic(&dev_priv->drm,
73 "Unknown property [PROP:%d:%s]\n",
74 property->base.id, property->name);
75 return -EINVAL;
76 }
77
78 return 0;
79}
80
81/**
82 * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property.
83 * @connector: Connector to set the property for.
84 * @state: Connector state to set the property on.
85 * @property: Property to set.
86 * @val: New value for the property.
87 *
88 * Sets the atomic property value for a digital connector.
89 */
90int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
91 struct drm_connector_state *state,
92 struct drm_property *property,
93 u64 val)
94{
95 struct drm_device *dev = connector->dev;
96 struct drm_i915_private *dev_priv = to_i915(dev);
97 struct intel_digital_connector_state *intel_conn_state =
98 to_intel_digital_connector_state(state);
99
100 if (property == dev_priv->display.properties.force_audio) {
101 intel_conn_state->force_audio = val;
102 return 0;
103 }
104
105 if (property == dev_priv->display.properties.broadcast_rgb) {
106 intel_conn_state->broadcast_rgb = val;
107 return 0;
108 }
109
110 drm_dbg_atomic(&dev_priv->drm, "Unknown property [PROP:%d:%s]\n",
111 property->base.id, property->name);
112 return -EINVAL;
113}
114
115int intel_digital_connector_atomic_check(struct drm_connector *conn,
116 struct drm_atomic_state *state)
117{
118 struct drm_connector_state *new_state =
119 drm_atomic_get_new_connector_state(state, conn);
120 struct intel_digital_connector_state *new_conn_state =
121 to_intel_digital_connector_state(new_state);
122 struct drm_connector_state *old_state =
123 drm_atomic_get_old_connector_state(state, conn);
124 struct intel_digital_connector_state *old_conn_state =
125 to_intel_digital_connector_state(old_state);
126 struct drm_crtc_state *crtc_state;
127
128 intel_hdcp_atomic_check(conn, old_state, new_state);
129
130 if (!new_state->crtc)
131 return 0;
132
133 crtc_state = drm_atomic_get_new_crtc_state(state, new_state->crtc);
134
135 /*
136 * These properties are handled by fastset, and might not end
137 * up in a modeset.
138 */
139 if (new_conn_state->force_audio != old_conn_state->force_audio ||
140 new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb ||
141 new_conn_state->base.colorspace != old_conn_state->base.colorspace ||
142 new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio ||
143 new_conn_state->base.content_type != old_conn_state->base.content_type ||
144 new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode ||
145 new_conn_state->base.privacy_screen_sw_state != old_conn_state->base.privacy_screen_sw_state ||
146 !drm_connector_atomic_hdr_metadata_equal(old_state, new_state))
147 crtc_state->mode_changed = true;
148
149 return 0;
150}
151
152/**
153 * intel_digital_connector_duplicate_state - duplicate connector state
154 * @connector: digital connector
155 *
156 * Allocates and returns a copy of the connector state (both common and
157 * digital connector specific) for the specified connector.
158 *
159 * Returns: The newly allocated connector state, or NULL on failure.
160 */
161struct drm_connector_state *
162intel_digital_connector_duplicate_state(struct drm_connector *connector)
163{
164 struct intel_digital_connector_state *state;
165
166 state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
167 if (!state)
168 return NULL;
169
170 __drm_atomic_helper_connector_duplicate_state(connector, &state->base);
171 return &state->base;
172}
173
174/**
175 * intel_connector_needs_modeset - check if connector needs a modeset
176 * @state: the atomic state corresponding to this modeset
177 * @connector: the connector
178 */
179bool
180intel_connector_needs_modeset(struct intel_atomic_state *state,
181 struct drm_connector *connector)
182{
183 const struct drm_connector_state *old_conn_state, *new_conn_state;
184
185 old_conn_state = drm_atomic_get_old_connector_state(&state->base, connector);
186 new_conn_state = drm_atomic_get_new_connector_state(&state->base, connector);
187
188 return old_conn_state->crtc != new_conn_state->crtc ||
189 (new_conn_state->crtc &&
190 drm_atomic_crtc_needs_modeset(drm_atomic_get_new_crtc_state(&state->base,
191 new_conn_state->crtc)));
192}
193
194/**
195 * intel_any_crtc_needs_modeset - check if any CRTC needs a modeset
196 * @state: the atomic state corresponding to this modeset
197 *
198 * Returns true if any CRTC in @state needs a modeset.
199 */
200bool intel_any_crtc_needs_modeset(struct intel_atomic_state *state)
201{
202 struct intel_crtc *crtc;
203 struct intel_crtc_state *crtc_state;
204 int i;
205
206 for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
207 if (intel_crtc_needs_modeset(crtc_state))
208 return true;
209 }
210
211 return false;
212}
213
214struct intel_digital_connector_state *
215intel_atomic_get_digital_connector_state(struct intel_atomic_state *state,
216 struct intel_connector *connector)
217{
218 struct drm_connector_state *conn_state;
219
220 conn_state = drm_atomic_get_connector_state(&state->base,
221 &connector->base);
222 if (IS_ERR(conn_state))
223 return ERR_CAST(conn_state);
224
225 return to_intel_digital_connector_state(conn_state);
226}
227
228/**
229 * intel_crtc_duplicate_state - duplicate crtc state
230 * @crtc: drm crtc
231 *
232 * Allocates and returns a copy of the crtc state (both common and
233 * Intel-specific) for the specified crtc.
234 *
235 * Returns: The newly allocated crtc state, or NULL on failure.
236 */
237struct drm_crtc_state *
238intel_crtc_duplicate_state(struct drm_crtc *crtc)
239{
240 const struct intel_crtc_state *old_crtc_state = to_intel_crtc_state(crtc->state);
241 struct intel_crtc_state *crtc_state;
242
243 crtc_state = kmemdup(old_crtc_state, sizeof(*crtc_state), GFP_KERNEL);
244 if (!crtc_state)
245 return NULL;
246
247 __drm_atomic_helper_crtc_duplicate_state(crtc, &crtc_state->uapi);
248
249 /* copy color blobs */
250 if (crtc_state->hw.degamma_lut)
251 drm_property_blob_get(crtc_state->hw.degamma_lut);
252 if (crtc_state->hw.ctm)
253 drm_property_blob_get(crtc_state->hw.ctm);
254 if (crtc_state->hw.gamma_lut)
255 drm_property_blob_get(crtc_state->hw.gamma_lut);
256
257 if (crtc_state->pre_csc_lut)
258 drm_property_blob_get(crtc_state->pre_csc_lut);
259 if (crtc_state->post_csc_lut)
260 drm_property_blob_get(crtc_state->post_csc_lut);
261
262 if (crtc_state->dp_tunnel_ref.tunnel)
263 drm_dp_tunnel_ref_get(crtc_state->dp_tunnel_ref.tunnel,
264 &crtc_state->dp_tunnel_ref);
265
266 crtc_state->update_pipe = false;
267 crtc_state->update_m_n = false;
268 crtc_state->update_lrr = false;
269 crtc_state->disable_cxsr = false;
270 crtc_state->update_wm_pre = false;
271 crtc_state->update_wm_post = false;
272 crtc_state->fifo_changed = false;
273 crtc_state->preload_luts = false;
274 crtc_state->wm.need_postvbl_update = false;
275 crtc_state->do_async_flip = false;
276 crtc_state->fb_bits = 0;
277 crtc_state->update_planes = 0;
278 crtc_state->dsb_color_vblank = NULL;
279 crtc_state->dsb_commit = NULL;
280 crtc_state->use_dsb = false;
281
282 return &crtc_state->uapi;
283}
284
285static void intel_crtc_put_color_blobs(struct intel_crtc_state *crtc_state)
286{
287 drm_property_blob_put(crtc_state->hw.degamma_lut);
288 drm_property_blob_put(crtc_state->hw.gamma_lut);
289 drm_property_blob_put(crtc_state->hw.ctm);
290
291 drm_property_blob_put(crtc_state->pre_csc_lut);
292 drm_property_blob_put(crtc_state->post_csc_lut);
293}
294
295void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state)
296{
297 intel_crtc_put_color_blobs(crtc_state);
298}
299
300/**
301 * intel_crtc_destroy_state - destroy crtc state
302 * @crtc: drm crtc
303 * @state: the state to destroy
304 *
305 * Destroys the crtc state (both common and Intel-specific) for the
306 * specified crtc.
307 */
308void
309intel_crtc_destroy_state(struct drm_crtc *crtc,
310 struct drm_crtc_state *state)
311{
312 struct intel_crtc_state *crtc_state = to_intel_crtc_state(state);
313
314 drm_WARN_ON(crtc->dev, crtc_state->dsb_color_vblank);
315 drm_WARN_ON(crtc->dev, crtc_state->dsb_commit);
316
317 __drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
318 intel_crtc_free_hw_state(crtc_state);
319 if (crtc_state->dp_tunnel_ref.tunnel)
320 drm_dp_tunnel_ref_put(&crtc_state->dp_tunnel_ref);
321 kfree(crtc_state);
322}
323
324struct drm_atomic_state *
325intel_atomic_state_alloc(struct drm_device *dev)
326{
327 struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
328
329 if (!state || drm_atomic_state_init(dev, &state->base) < 0) {
330 kfree(state);
331 return NULL;
332 }
333
334 return &state->base;
335}
336
337void intel_atomic_state_free(struct drm_atomic_state *_state)
338{
339 struct intel_atomic_state *state = to_intel_atomic_state(_state);
340
341 drm_atomic_state_default_release(&state->base);
342 kfree(state->global_objs);
343 kfree(state);
344}
345
346void intel_atomic_state_clear(struct drm_atomic_state *s)
347{
348 struct intel_atomic_state *state = to_intel_atomic_state(s);
349
350 drm_atomic_state_default_clear(&state->base);
351 intel_atomic_clear_global_state(state);
352
353 /* state->internal not reset on purpose */
354
355 state->dpll_set = state->modeset = false;
356
357 intel_dp_tunnel_atomic_cleanup_inherited_state(state);
358}
359
360struct intel_crtc_state *
361intel_atomic_get_crtc_state(struct drm_atomic_state *state,
362 struct intel_crtc *crtc)
363{
364 struct drm_crtc_state *crtc_state;
365 crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
366 if (IS_ERR(crtc_state))
367 return ERR_CAST(crtc_state);
368
369 return to_intel_crtc_state(crtc_state);
370}