dc_surface.c

  1/*
  2 * Copyright 2015 Advanced Micro Devices, Inc.
  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 shall be included in
 12 * all copies or substantial portions of the Software.
 13 *
 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 20 * OTHER DEALINGS IN THE SOFTWARE.
 21 *
 22 * Authors: AMD
 23 *
 24 */
 25
 26/* DC interface (public) */
 27#include "dm_services.h"
 28#include "dc.h"
 29
 30/* DC core (private) */
 31#include "core_types.h"
 32#include "transform.h"
 33#include "dpp.h"
 34
 35#include "dc_plane_priv.h"
 36
 37/*******************************************************************************
 38 * Private functions
 39 ******************************************************************************/
 40void dc_plane_construct(struct dc_context *ctx, struct dc_plane_state *plane_state)
 41{
 42	plane_state->ctx = ctx;
 43
 44	plane_state->gamma_correction.is_identity = true;
 45
 46	plane_state->in_transfer_func.type = TF_TYPE_BYPASS;
 47
 48	plane_state->in_shaper_func.type = TF_TYPE_BYPASS;
 49
 50	plane_state->lut3d_func.state.raw = 0;
 51
 52	plane_state->blend_tf.type = TF_TYPE_BYPASS;
 53
 54	plane_state->pre_multiplied_alpha = true;
 55
 56}
 57
 58void dc_plane_destruct(struct dc_plane_state *plane_state)
 59{
 60	// no more pointers to free within dc_plane_state
 61}
 62
 63
 64/* dc_state is passed in separately since it may differ from the current dc state accessible from plane_state e.g.
 65 * if the driver is doing an update from an old context to a new one and the caller wants the pipe mask for the new
 66 * context rather than the existing one
 67 */
 68uint8_t  dc_plane_get_pipe_mask(struct dc_state *dc_state, const struct dc_plane_state *plane_state)
 69{
 70	uint8_t pipe_mask = 0;
 71	int i;
 72
 73	for (i = 0; i < plane_state->ctx->dc->res_pool->pipe_count; i++) {
 74		struct pipe_ctx *pipe_ctx = &dc_state->res_ctx.pipe_ctx[i];
 75
 76		if (pipe_ctx->plane_state == plane_state && pipe_ctx->plane_res.hubp)
 77			pipe_mask |= 1 << pipe_ctx->plane_res.hubp->inst;
 78	}
 79
 80	return pipe_mask;
 81}
 82
 83/*******************************************************************************
 84 * Public functions
 85 ******************************************************************************/
 86struct dc_plane_state *dc_create_plane_state(const struct dc *dc)
 87{
 88	struct dc_plane_state *plane_state = kvzalloc(sizeof(*plane_state),
 89							GFP_ATOMIC);
 90
 91	if (NULL == plane_state)
 92		return NULL;
 93
 94	kref_init(&plane_state->refcount);
 95	dc_plane_construct(dc->ctx, plane_state);
 96
 97	return plane_state;
 98}
 99
100/*
101 *****************************************************************************
102 *  Function: dc_plane_get_status
103 *
104 *  @brief
105 *     Looks up the pipe context of plane_state and updates the pending status
106 *     of the pipe context. Then returns plane_state->status
107 *
108 *  @param [in] plane_state: pointer to the plane_state to get the status of
109 *****************************************************************************
110 */
111const struct dc_plane_status *dc_plane_get_status(
112		const struct dc_plane_state *plane_state,
113		union dc_plane_status_update_flags flags)
114{
115	const struct dc_plane_status *plane_status;
116	struct dc  *dc;
117	int i;
118
119	if (!plane_state ||
120		!plane_state->ctx ||
121		!plane_state->ctx->dc) {
122		ASSERT(0);
123		return NULL; /* remove this if above assert never hit */
124	}
125
126	plane_status = &plane_state->status;
127	dc = plane_state->ctx->dc;
128
129	if (dc->current_state == NULL)
130		return NULL;
131
132	/* Find the current plane state and set its pending bit to false */
133	for (i = 0; i < dc->res_pool->pipe_count; i++) {
134		struct pipe_ctx *pipe_ctx =
135				&dc->current_state->res_ctx.pipe_ctx[i];
136
137		if (pipe_ctx->plane_state != plane_state)
138			continue;
139
140		if (pipe_ctx->plane_state && flags.bits.address)
141			pipe_ctx->plane_state->status.is_flip_pending = false;
142
143		break;
144	}
145
146	dc_exit_ips_for_hw_access(dc);
147
148	for (i = 0; i < dc->res_pool->pipe_count; i++) {
149		struct pipe_ctx *pipe_ctx =
150				&dc->current_state->res_ctx.pipe_ctx[i];
151
152		if (pipe_ctx->plane_state != plane_state)
153			continue;
154
155		if (flags.bits.address)
156			dc->hwss.update_pending_status(pipe_ctx);
157	}
158
159	return plane_status;
160}
161
162void dc_plane_state_retain(struct dc_plane_state *plane_state)
163{
164	kref_get(&plane_state->refcount);
165}
166
167static void dc_plane_state_free(struct kref *kref)
168{
169	struct dc_plane_state *plane_state = container_of(kref, struct dc_plane_state, refcount);
170	dc_plane_destruct(plane_state);
171	kvfree(plane_state);
172}
173
174void dc_plane_state_release(struct dc_plane_state *plane_state)
175{
176	kref_put(&plane_state->refcount, dc_plane_state_free);
177}
178
179void dc_gamma_retain(struct dc_gamma *gamma)
180{
181	kref_get(&gamma->refcount);
182}
183
184static void dc_gamma_free(struct kref *kref)
185{
186	struct dc_gamma *gamma = container_of(kref, struct dc_gamma, refcount);
187	kvfree(gamma);
188}
189
190void dc_gamma_release(struct dc_gamma **gamma)
191{
192	kref_put(&(*gamma)->refcount, dc_gamma_free);
193	*gamma = NULL;
194}
195
196struct dc_gamma *dc_create_gamma(void)
197{
198	struct dc_gamma *gamma = kvzalloc(sizeof(*gamma), GFP_KERNEL);
199
200	if (gamma == NULL)
201		goto alloc_fail;
202
203	kref_init(&gamma->refcount);
204	return gamma;
205
206alloc_fail:
207	return NULL;
208}
209
210void dc_transfer_func_retain(struct dc_transfer_func *tf)
211{
212	kref_get(&tf->refcount);
213}
214
215static void dc_transfer_func_free(struct kref *kref)
216{
217	struct dc_transfer_func *tf = container_of(kref, struct dc_transfer_func, refcount);
218	kvfree(tf);
219}
220
221void dc_transfer_func_release(struct dc_transfer_func *tf)
222{
223	kref_put(&tf->refcount, dc_transfer_func_free);
224}
225
226struct dc_transfer_func *dc_create_transfer_func(void)
227{
228	struct dc_transfer_func *tf = kvzalloc(sizeof(*tf), GFP_KERNEL);
229
230	if (tf == NULL)
231		goto alloc_fail;
232
233	kref_init(&tf->refcount);
234
235	return tf;
236
237alloc_fail:
238	return NULL;
239}
240
241static void dc_3dlut_func_free(struct kref *kref)
242{
243	struct dc_3dlut *lut = container_of(kref, struct dc_3dlut, refcount);
244
245	kvfree(lut);
246}
247
248struct dc_3dlut *dc_create_3dlut_func(void)
249{
250	struct dc_3dlut *lut = kvzalloc(sizeof(*lut), GFP_KERNEL);
251
252	if (lut == NULL)
253		goto alloc_fail;
254
255	kref_init(&lut->refcount);
256	lut->state.raw = 0;
257
258	return lut;
259
260alloc_fail:
261	return NULL;
262
263}
264
265void dc_3dlut_func_release(struct dc_3dlut *lut)
266{
267	kref_put(&lut->refcount, dc_3dlut_func_free);
268}
269
270void dc_3dlut_func_retain(struct dc_3dlut *lut)
271{
272	kref_get(&lut->refcount);
273}
274
275void dc_plane_force_dcc_and_tiling_disable(struct dc_plane_state *plane_state,
276					   bool clear_tiling)
277{
278	struct dc *dc;
279	int i;
280
281	if (!plane_state)
282		return;
283
284	dc = plane_state->ctx->dc;
285
286	if (!dc || !dc->current_state)
287		return;
288
289	for (i = 0; i < dc->res_pool->pipe_count; i++) {
290		struct pipe_ctx *pipe_ctx = &dc->current_state->res_ctx.pipe_ctx[i];
291
292		if (!pipe_ctx)
293			continue;
294
295		if (dc->hwss.clear_surface_dcc_and_tiling)
296			dc->hwss.clear_surface_dcc_and_tiling(pipe_ctx, plane_state, clear_tiling);
297	}
298}
299
300void dc_plane_copy_config(struct dc_plane_state *dst, const struct dc_plane_state *src)
301{
302	struct kref temp_refcount;
303
304	/* backup persistent info */
305	memcpy(&temp_refcount, &dst->refcount, sizeof(struct kref));
306
307	/* copy all configuration information */
308	memcpy(dst, src, sizeof(struct dc_plane_state));
309
310	/* restore persistent info */
311	memcpy(&dst->refcount, &temp_refcount, sizeof(struct kref));
312}