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 /*******************************************************************************
36 * Private functions
37 ******************************************************************************/
construct(struct dc_context * ctx,struct dc_plane_state * plane_state)38 static void construct(struct dc_context *ctx, struct dc_plane_state *plane_state)
39 {
40 plane_state->ctx = ctx;
41
42 plane_state->gamma_correction = dc_create_gamma();
43 plane_state->gamma_correction->is_identity = true;
44
45 plane_state->in_transfer_func = dc_create_transfer_func();
46 plane_state->in_transfer_func->type = TF_TYPE_BYPASS;
47 }
48
destruct(struct dc_plane_state * plane_state)49 static void destruct(struct dc_plane_state *plane_state)
50 {
51 if (plane_state->gamma_correction != NULL) {
52 dc_gamma_release(&plane_state->gamma_correction);
53 }
54 if (plane_state->in_transfer_func != NULL) {
55 dc_transfer_func_release(
56 plane_state->in_transfer_func);
57 plane_state->in_transfer_func = NULL;
58 }
59 }
60
61 /*******************************************************************************
62 * Public functions
63 ******************************************************************************/
enable_surface_flip_reporting(struct dc_plane_state * plane_state,uint32_t controller_id)64 void enable_surface_flip_reporting(struct dc_plane_state *plane_state,
65 uint32_t controller_id)
66 {
67 plane_state->irq_source = controller_id + DC_IRQ_SOURCE_PFLIP1 - 1;
68 /*register_flip_interrupt(surface);*/
69 }
70
dc_create_plane_state(struct dc * dc)71 struct dc_plane_state *dc_create_plane_state(struct dc *dc)
72 {
73 struct dc *core_dc = dc;
74
75 struct dc_plane_state *plane_state = kzalloc(sizeof(*plane_state),
76 GFP_KERNEL);
77
78 if (NULL == plane_state)
79 return NULL;
80
81 kref_init(&plane_state->refcount);
82 construct(core_dc->ctx, plane_state);
83
84 return plane_state;
85 }
86
87 /**
88 *****************************************************************************
89 * Function: dc_plane_get_status
90 *
91 * @brief
92 * Looks up the pipe context of plane_state and updates the pending status
93 * of the pipe context. Then returns plane_state->status
94 *
95 * @param [in] plane_state: pointer to the plane_state to get the status of
96 *****************************************************************************
97 */
dc_plane_get_status(const struct dc_plane_state * plane_state)98 const struct dc_plane_status *dc_plane_get_status(
99 const struct dc_plane_state *plane_state)
100 {
101 const struct dc_plane_status *plane_status;
102 struct dc *core_dc;
103 int i;
104
105 if (!plane_state ||
106 !plane_state->ctx ||
107 !plane_state->ctx->dc) {
108 ASSERT(0);
109 return NULL; /* remove this if above assert never hit */
110 }
111
112 plane_status = &plane_state->status;
113 core_dc = plane_state->ctx->dc;
114
115 if (core_dc->current_state == NULL)
116 return NULL;
117
118 for (i = 0; i < core_dc->res_pool->pipe_count; i++) {
119 struct pipe_ctx *pipe_ctx =
120 &core_dc->current_state->res_ctx.pipe_ctx[i];
121
122 if (pipe_ctx->plane_state != plane_state)
123 continue;
124
125 core_dc->hwss.update_pending_status(pipe_ctx);
126 }
127
128 return plane_status;
129 }
130
dc_plane_state_retain(struct dc_plane_state * plane_state)131 void dc_plane_state_retain(struct dc_plane_state *plane_state)
132 {
133 kref_get(&plane_state->refcount);
134 }
135
dc_plane_state_free(struct kref * kref)136 static void dc_plane_state_free(struct kref *kref)
137 {
138 struct dc_plane_state *plane_state = container_of(kref, struct dc_plane_state, refcount);
139 destruct(plane_state);
140 kvfree(plane_state);
141 }
142
dc_plane_state_release(struct dc_plane_state * plane_state)143 void dc_plane_state_release(struct dc_plane_state *plane_state)
144 {
145 kref_put(&plane_state->refcount, dc_plane_state_free);
146 }
147
dc_gamma_retain(struct dc_gamma * gamma)148 void dc_gamma_retain(struct dc_gamma *gamma)
149 {
150 kref_get(&gamma->refcount);
151 }
152
dc_gamma_free(struct kref * kref)153 static void dc_gamma_free(struct kref *kref)
154 {
155 struct dc_gamma *gamma = container_of(kref, struct dc_gamma, refcount);
156 kvfree(gamma);
157 }
158
dc_gamma_release(struct dc_gamma ** gamma)159 void dc_gamma_release(struct dc_gamma **gamma)
160 {
161 kref_put(&(*gamma)->refcount, dc_gamma_free);
162 *gamma = NULL;
163 }
164
dc_create_gamma(void)165 struct dc_gamma *dc_create_gamma(void)
166 {
167 struct dc_gamma *gamma = kzalloc(sizeof(*gamma), GFP_KERNEL);
168
169 if (gamma == NULL)
170 goto alloc_fail;
171
172 kref_init(&gamma->refcount);
173 return gamma;
174
175 alloc_fail:
176 return NULL;
177 }
178
dc_transfer_func_retain(struct dc_transfer_func * tf)179 void dc_transfer_func_retain(struct dc_transfer_func *tf)
180 {
181 kref_get(&tf->refcount);
182 }
183
dc_transfer_func_free(struct kref * kref)184 static void dc_transfer_func_free(struct kref *kref)
185 {
186 struct dc_transfer_func *tf = container_of(kref, struct dc_transfer_func, refcount);
187 kvfree(tf);
188 }
189
dc_transfer_func_release(struct dc_transfer_func * tf)190 void dc_transfer_func_release(struct dc_transfer_func *tf)
191 {
192 kref_put(&tf->refcount, dc_transfer_func_free);
193 }
194
dc_create_transfer_func(void)195 struct dc_transfer_func *dc_create_transfer_func(void)
196 {
197 struct dc_transfer_func *tf = kzalloc(sizeof(*tf), GFP_KERNEL);
198
199 if (tf == NULL)
200 goto alloc_fail;
201
202 kref_init(&tf->refcount);
203
204 return tf;
205
206 alloc_fail:
207 return NULL;
208 }
209
210
211