drivers/gpu/drm/amd/display/dc/core/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 /*******************************************************************************
  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 = kzalloc(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         kfree(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         kfree(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()
 149 {
 150         struct dc_gamma *gamma = kzalloc(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         kfree(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()
 179 {
 180         struct dc_transfer_func *tf = kzalloc(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