drivers/gpu/drm/amd/display/dc/irq/irq_service.c

   1 /*
   2  * Copyright 2012-15 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 #include "dm_services.h"
  27
  28 #include "include/irq_service_interface.h"
  29 #include "include/logger_interface.h"
  30
  31 #include "dce110/irq_service_dce110.h"
  32
  33
  34 #include "dce80/irq_service_dce80.h"
  35
  36
  37 #include "reg_helper.h"
  38 #include "irq_service.h"
  39
  40
  41
  42 #define CTX \
  43                 irq_service->ctx
  44
  45 bool dal_irq_service_construct(
  46         struct irq_service *irq_service,
  47         struct irq_service_init_data *init_data)
  48 {
  49         if (!init_data || !init_data->ctx)
  50                 return false;
  51
  52         irq_service->ctx = init_data->ctx;
  53         return true;
  54 }
  55
  56 void dal_irq_service_destroy(struct irq_service **irq_service)
  57 {
  58         if (!irq_service || !*irq_service) {
  59                 BREAK_TO_DEBUGGER();
  60                 return;
  61         }
  62
  63         dm_free(*irq_service);
  64
  65         *irq_service = NULL;
  66 }
  67
  68 const struct irq_source_info *find_irq_source_info(
  69         struct irq_service *irq_service,
  70         enum dc_irq_source source)
  71 {
  72         if (source > DAL_IRQ_SOURCES_NUMBER || source < DC_IRQ_SOURCE_INVALID)
  73                 return NULL;
  74
  75         return &irq_service->info[source];
  76 }
  77
  78 void dal_irq_service_set_generic(
  79         struct irq_service *irq_service,
  80         const struct irq_source_info *info,
  81         bool enable)
  82 {
  83         uint32_t addr = info->enable_reg;
  84         uint32_t value = dm_read_reg(irq_service->ctx, addr);
  85
  86         value = (value & ~info->enable_mask) |
  87                 (info->enable_value[enable ? 0 : 1] & info->enable_mask);
  88         dm_write_reg(irq_service->ctx, addr, value);
  89 }
  90
  91 bool dal_irq_service_set(
  92         struct irq_service *irq_service,
  93         enum dc_irq_source source,
  94         bool enable)
  95 {
  96         const struct irq_source_info *info =
  97                 find_irq_source_info(irq_service, source);
  98
  99         if (!info) {
 100                 dm_logger_write(
 101                         irq_service->ctx->logger, LOG_ERROR,
 102                         "%s: cannot find irq info table entry for %d\n",
 103                         __func__,
 104                         source);
 105                 return false;
 106         }
 107
 108         dal_irq_service_ack(irq_service, source);
 109
 110         if (info->funcs->set)
 111                 return info->funcs->set(irq_service, info, enable);
 112
 113         dal_irq_service_set_generic(irq_service, info, enable);
 114
 115         return true;
 116 }
 117
 118 void dal_irq_service_ack_generic(
 119         struct irq_service *irq_service,
 120         const struct irq_source_info *info)
 121 {
 122         uint32_t addr = info->ack_reg;
 123         uint32_t value = dm_read_reg(irq_service->ctx, addr);
 124
 125         value = (value & ~info->ack_mask) |
 126                 (info->ack_value & info->ack_mask);
 127         dm_write_reg(irq_service->ctx, addr, value);
 128 }
 129
 130 bool dal_irq_service_ack(
 131         struct irq_service *irq_service,
 132         enum dc_irq_source source)
 133 {
 134         const struct irq_source_info *info =
 135                 find_irq_source_info(irq_service, source);
 136
 137         if (!info) {
 138                 dm_logger_write(
 139                         irq_service->ctx->logger, LOG_ERROR,
 140                         "%s: cannot find irq info table entry for %d\n",
 141                         __func__,
 142                         source);
 143                 return false;
 144         }
 145
 146         if (info->funcs->ack)
 147                 return info->funcs->ack(irq_service, info);
 148
 149         dal_irq_service_ack_generic(irq_service, info);
 150
 151         return true;
 152 }
 153
 154 enum dc_irq_source dal_irq_service_to_irq_source(
 155                 struct irq_service *irq_service,
 156                 uint32_t src_id,
 157                 uint32_t ext_id)
 158 {
 159         return irq_service->funcs->to_dal_irq_source(
 160                 irq_service,
 161                 src_id,
 162                 ext_id);
 163 }