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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/drm_atomic.h>
33#include <drm/drm_atomic_helper.h>
34#include <drm/drm_fourcc.h>
35
36#include "i915_drv.h"
37#include "i915_reg.h"
38#include "intel_atomic.h"
39#include "intel_cdclk.h"
40#include "intel_display_types.h"
41#include "intel_global_state.h"
42#include "intel_hdcp.h"
43#include "intel_psr.h"
44#include "intel_fb.h"
45#include "skl_universal_plane.h"
46
47/**
48 * intel_digital_connector_atomic_get_property - hook for connector->atomic_get_property.
49 * @connector: Connector to get the property for.
50 * @state: Connector state to retrieve the property from.
51 * @property: Property to retrieve.
52 * @val: Return value for the property.
53 *
54 * Returns the atomic property value for a digital connector.
55 */
56int intel_digital_connector_atomic_get_property(struct drm_connector *connector,
57 const struct drm_connector_state *state,
58 struct drm_property *property,
59 u64 *val)
60{
61 struct drm_device *dev = connector->dev;
62 struct drm_i915_private *dev_priv = to_i915(dev);
63 struct intel_digital_connector_state *intel_conn_state =
64 to_intel_digital_connector_state(state);
65
66 if (property == dev_priv->display.properties.force_audio)
67 *val = intel_conn_state->force_audio;
68 else if (property == dev_priv->display.properties.broadcast_rgb)
69 *val = intel_conn_state->broadcast_rgb;
70 else {
71 drm_dbg_atomic(&dev_priv->drm,
72 "Unknown property [PROP:%d:%s]\n",
73 property->base.id, property->name);
74 return -EINVAL;
75 }
76
77 return 0;
78}
79
80/**
81 * intel_digital_connector_atomic_set_property - hook for connector->atomic_set_property.
82 * @connector: Connector to set the property for.
83 * @state: Connector state to set the property on.
84 * @property: Property to set.
85 * @val: New value for the property.
86 *
87 * Sets the atomic property value for a digital connector.
88 */
89int intel_digital_connector_atomic_set_property(struct drm_connector *connector,
90 struct drm_connector_state *state,
91 struct drm_property *property,
92 u64 val)
93{
94 struct drm_device *dev = connector->dev;
95 struct drm_i915_private *dev_priv = to_i915(dev);
96 struct intel_digital_connector_state *intel_conn_state =
97 to_intel_digital_connector_state(state);
98
99 if (property == dev_priv->display.properties.force_audio) {
100 intel_conn_state->force_audio = val;
101 return 0;
102 }
103
104 if (property == dev_priv->display.properties.broadcast_rgb) {
105 intel_conn_state->broadcast_rgb = val;
106 return 0;
107 }
108
109 drm_dbg_atomic(&dev_priv->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, 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, 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(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, 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->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->base, connector);
185 new_conn_state = drm_atomic_get_new_connector_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(drm_atomic_get_new_crtc_state(&state->base,
190 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->base,
220 &connector->base);
221 if (IS_ERR(conn_state))
222 return ERR_CAST(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, &crtc_state->uapi);
247
248 /* copy color blobs */
249 if (crtc_state->hw.degamma_lut)
250 drm_property_blob_get(crtc_state->hw.degamma_lut);
251 if (crtc_state->hw.ctm)
252 drm_property_blob_get(crtc_state->hw.ctm);
253 if (crtc_state->hw.gamma_lut)
254 drm_property_blob_get(crtc_state->hw.gamma_lut);
255
256 if (crtc_state->pre_csc_lut)
257 drm_property_blob_get(crtc_state->pre_csc_lut);
258 if (crtc_state->post_csc_lut)
259 drm_property_blob_get(crtc_state->post_csc_lut);
260
261 crtc_state->update_pipe = false;
262 crtc_state->update_m_n = false;
263 crtc_state->update_lrr = false;
264 crtc_state->disable_lp_wm = false;
265 crtc_state->disable_cxsr = false;
266 crtc_state->update_wm_pre = false;
267 crtc_state->update_wm_post = false;
268 crtc_state->fifo_changed = false;
269 crtc_state->preload_luts = false;
270 crtc_state->wm.need_postvbl_update = false;
271 crtc_state->do_async_flip = false;
272 crtc_state->fb_bits = 0;
273 crtc_state->update_planes = 0;
274 crtc_state->dsb = NULL;
275
276 return &crtc_state->uapi;
277}
278
279static void intel_crtc_put_color_blobs(struct intel_crtc_state *crtc_state)
280{
281 drm_property_blob_put(crtc_state->hw.degamma_lut);
282 drm_property_blob_put(crtc_state->hw.gamma_lut);
283 drm_property_blob_put(crtc_state->hw.ctm);
284
285 drm_property_blob_put(crtc_state->pre_csc_lut);
286 drm_property_blob_put(crtc_state->post_csc_lut);
287}
288
289void intel_crtc_free_hw_state(struct intel_crtc_state *crtc_state)
290{
291 intel_crtc_put_color_blobs(crtc_state);
292}
293
294/**
295 * intel_crtc_destroy_state - destroy crtc state
296 * @crtc: drm crtc
297 * @state: the state to destroy
298 *
299 * Destroys the crtc state (both common and Intel-specific) for the
300 * specified crtc.
301 */
302void
303intel_crtc_destroy_state(struct drm_crtc *crtc,
304 struct drm_crtc_state *state)
305{
306 struct intel_crtc_state *crtc_state = to_intel_crtc_state(state);
307
308 drm_WARN_ON(crtc->dev, crtc_state->dsb);
309
310 __drm_atomic_helper_crtc_destroy_state(&crtc_state->uapi);
311 intel_crtc_free_hw_state(crtc_state);
312 kfree(crtc_state);
313}
314
315struct drm_atomic_state *
316intel_atomic_state_alloc(struct drm_device *dev)
317{
318 struct intel_atomic_state *state = kzalloc(sizeof(*state), GFP_KERNEL);
319
320 if (!state || drm_atomic_state_init(dev, &state->base) < 0) {
321 kfree(state);
322 return NULL;
323 }
324
325 return &state->base;
326}
327
328void intel_atomic_state_free(struct drm_atomic_state *_state)
329{
330 struct intel_atomic_state *state = to_intel_atomic_state(_state);
331
332 drm_atomic_state_default_release(&state->base);
333 kfree(state->global_objs);
334 kfree(state);
335}
336
337void intel_atomic_state_clear(struct drm_atomic_state *s)
338{
339 struct intel_atomic_state *state = to_intel_atomic_state(s);
340
341 drm_atomic_state_default_clear(&state->base);
342 intel_atomic_clear_global_state(state);
343
344 /* state->internal not reset on purpose */
345
346 state->dpll_set = state->modeset = false;
347}
348
349struct intel_crtc_state *
350intel_atomic_get_crtc_state(struct drm_atomic_state *state,
351 struct intel_crtc *crtc)
352{
353 struct drm_crtc_state *crtc_state;
354 crtc_state = drm_atomic_get_crtc_state(state, &crtc->base);
355 if (IS_ERR(crtc_state))
356 return ERR_CAST(crtc_state);
357
358 return to_intel_crtc_state(crtc_state);
359}