intel_atomic.c

  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, 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	if (crtc_state->dp_tunnel_ref.tunnel)
262		drm_dp_tunnel_ref_get(crtc_state->dp_tunnel_ref.tunnel,
263				      &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(crtc_state->hw.degamma_lut);
287	drm_property_blob_put(crtc_state->hw.gamma_lut);
288	drm_property_blob_put(crtc_state->hw.ctm);
289
290	drm_property_blob_put(crtc_state->pre_csc_lut);
291	drm_property_blob_put(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(&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(&crtc_state->dp_tunnel_ref);
320	kfree(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->base) < 0) {
329		kfree(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->base);
341	kfree(state->global_objs);
342	kfree(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->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->base);
365	if (IS_ERR(crtc_state))
366		return ERR_CAST(crtc_state);
367
368	return to_intel_crtc_state(crtc_state);
369}