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