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 = dc_create_gamma();
45 if (plane_state->gamma_correction != NULL)
46 plane_state->gamma_correction->is_identity = true;
47
48 plane_state->in_transfer_func = dc_create_transfer_func();
49 if (plane_state->in_transfer_func != NULL) {
50 plane_state->in_transfer_func->type = TF_TYPE_BYPASS;
51 }
52 plane_state->in_shaper_func = dc_create_transfer_func();
53 if (plane_state->in_shaper_func != NULL) {
54 plane_state->in_shaper_func->type = TF_TYPE_BYPASS;
55 }
56
57 plane_state->lut3d_func = dc_create_3dlut_func();
58
59 plane_state->blend_tf = dc_create_transfer_func();
60 if (plane_state->blend_tf != NULL) {
61 plane_state->blend_tf->type = TF_TYPE_BYPASS;
62 }
63
64 plane_state->pre_multiplied_alpha = true;
65
66}
67
68void dc_plane_destruct(struct dc_plane_state *plane_state)
69{
70 if (plane_state->gamma_correction != NULL) {
71 dc_gamma_release(dc_gamma: &plane_state->gamma_correction);
72 }
73 if (plane_state->in_transfer_func != NULL) {
74 dc_transfer_func_release(
75 dc_tf: plane_state->in_transfer_func);
76 plane_state->in_transfer_func = NULL;
77 }
78 if (plane_state->in_shaper_func != NULL) {
79 dc_transfer_func_release(
80 dc_tf: plane_state->in_shaper_func);
81 plane_state->in_shaper_func = NULL;
82 }
83 if (plane_state->lut3d_func != NULL) {
84 dc_3dlut_func_release(
85 lut: plane_state->lut3d_func);
86 plane_state->lut3d_func = NULL;
87 }
88 if (plane_state->blend_tf != NULL) {
89 dc_transfer_func_release(
90 dc_tf: plane_state->blend_tf);
91 plane_state->blend_tf = NULL;
92 }
93
94}
95
96/*******************************************************************************
97 * Public functions
98 ******************************************************************************/
99void enable_surface_flip_reporting(struct dc_plane_state *plane_state,
100 uint32_t controller_id)
101{
102 plane_state->irq_source = controller_id + DC_IRQ_SOURCE_PFLIP1 - 1;
103 /*register_flip_interrupt(surface);*/
104}
105
106struct dc_plane_state *dc_create_plane_state(struct dc *dc)
107{
108 struct dc_plane_state *plane_state = kvzalloc(size: sizeof(*plane_state),
109 GFP_KERNEL);
110
111 if (NULL == plane_state)
112 return NULL;
113
114 kref_init(kref: &plane_state->refcount);
115 dc_plane_construct(ctx: dc->ctx, plane_state);
116
117 return plane_state;
118}
119
120/*
121 *****************************************************************************
122 * Function: dc_plane_get_status
123 *
124 * @brief
125 * Looks up the pipe context of plane_state and updates the pending status
126 * of the pipe context. Then returns plane_state->status
127 *
128 * @param [in] plane_state: pointer to the plane_state to get the status of
129 *****************************************************************************
130 */
131const struct dc_plane_status *dc_plane_get_status(
132 const struct dc_plane_state *plane_state)
133{
134 const struct dc_plane_status *plane_status;
135 struct dc *dc;
136 int i;
137
138 if (!plane_state ||
139 !plane_state->ctx ||
140 !plane_state->ctx->dc) {
141 ASSERT(0);
142 return NULL; /* remove this if above assert never hit */
143 }
144
145 plane_status = &plane_state->status;
146 dc = plane_state->ctx->dc;
147
148 if (dc->current_state == NULL)
149 return NULL;
150
151 /* Find the current plane state and set its pending bit to false */
152 for (i = 0; i < dc->res_pool->pipe_count; i++) {
153 struct pipe_ctx *pipe_ctx =
154 &dc->current_state->res_ctx.pipe_ctx[i];
155
156 if (pipe_ctx->plane_state != plane_state)
157 continue;
158
159 pipe_ctx->plane_state->status.is_flip_pending = false;
160
161 break;
162 }
163
164 dc_exit_ips_for_hw_access(dc);
165
166 for (i = 0; i < dc->res_pool->pipe_count; i++) {
167 struct pipe_ctx *pipe_ctx =
168 &dc->current_state->res_ctx.pipe_ctx[i];
169
170 if (pipe_ctx->plane_state != plane_state)
171 continue;
172
173 dc->hwss.update_pending_status(pipe_ctx);
174 }
175
176 return plane_status;
177}
178
179void dc_plane_state_retain(struct dc_plane_state *plane_state)
180{
181 kref_get(kref: &plane_state->refcount);
182}
183
184static void dc_plane_state_free(struct kref *kref)
185{
186 struct dc_plane_state *plane_state = container_of(kref, struct dc_plane_state, refcount);
187 dc_plane_destruct(plane_state);
188 kvfree(addr: plane_state);
189}
190
191void dc_plane_state_release(struct dc_plane_state *plane_state)
192{
193 kref_put(kref: &plane_state->refcount, release: dc_plane_state_free);
194}
195
196void dc_gamma_retain(struct dc_gamma *gamma)
197{
198 kref_get(kref: &gamma->refcount);
199}
200
201static void dc_gamma_free(struct kref *kref)
202{
203 struct dc_gamma *gamma = container_of(kref, struct dc_gamma, refcount);
204 kvfree(addr: gamma);
205}
206
207void dc_gamma_release(struct dc_gamma **gamma)
208{
209 kref_put(kref: &(*gamma)->refcount, release: dc_gamma_free);
210 *gamma = NULL;
211}
212
213struct dc_gamma *dc_create_gamma(void)
214{
215 struct dc_gamma *gamma = kvzalloc(size: sizeof(*gamma), GFP_KERNEL);
216
217 if (gamma == NULL)
218 goto alloc_fail;
219
220 kref_init(kref: &gamma->refcount);
221 return gamma;
222
223alloc_fail:
224 return NULL;
225}
226
227void dc_transfer_func_retain(struct dc_transfer_func *tf)
228{
229 kref_get(kref: &tf->refcount);
230}
231
232static void dc_transfer_func_free(struct kref *kref)
233{
234 struct dc_transfer_func *tf = container_of(kref, struct dc_transfer_func, refcount);
235 kvfree(addr: tf);
236}
237
238void dc_transfer_func_release(struct dc_transfer_func *tf)
239{
240 kref_put(kref: &tf->refcount, release: dc_transfer_func_free);
241}
242
243struct dc_transfer_func *dc_create_transfer_func(void)
244{
245 struct dc_transfer_func *tf = kvzalloc(size: sizeof(*tf), GFP_KERNEL);
246
247 if (tf == NULL)
248 goto alloc_fail;
249
250 kref_init(kref: &tf->refcount);
251
252 return tf;
253
254alloc_fail:
255 return NULL;
256}
257
258static void dc_3dlut_func_free(struct kref *kref)
259{
260 struct dc_3dlut *lut = container_of(kref, struct dc_3dlut, refcount);
261
262 kvfree(addr: lut);
263}
264
265struct dc_3dlut *dc_create_3dlut_func(void)
266{
267 struct dc_3dlut *lut = kvzalloc(size: sizeof(*lut), GFP_KERNEL);
268
269 if (lut == NULL)
270 goto alloc_fail;
271
272 kref_init(kref: &lut->refcount);
273 lut->state.raw = 0;
274
275 return lut;
276
277alloc_fail:
278 return NULL;
279
280}
281
282void dc_3dlut_func_release(struct dc_3dlut *lut)
283{
284 kref_put(kref: &lut->refcount, release: dc_3dlut_func_free);
285}
286
287void dc_3dlut_func_retain(struct dc_3dlut *lut)
288{
289 kref_get(kref: &lut->refcount);
290}
291
292
293

source code of linux/drivers/gpu/drm/amd/display/dc/core/dc_surface.c