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