drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.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 "atom.h"
  29
  30 #include "include/bios_parser_types.h"
  31 #include "bios_parser_helper.h"
  32 #include "command_table_helper.h"
  33 #include "command_table.h"
  34 #include "bios_parser_types_internal.h"
  35
  36 uint8_t *bios_get_image(struct dc_bios *bp,
  37         uint32_t offset,
  38         uint32_t size)
  39 {
  40         if (bp->bios && offset + size < bp->bios_size)
  41                 return bp->bios + offset;
  42         else
  43                 return NULL;
  44 }
  45
  46 #include "reg_helper.h"
  47
  48 #define CTX \
  49         bios->ctx
  50 #define REG(reg)\
  51         (bios->regs->reg)
  52
  53 #undef FN
  54 #define FN(reg_name, field_name) \
  55                 ATOM_ ## field_name ## _SHIFT, ATOM_ ## field_name
  56
  57 bool bios_is_accelerated_mode(
  58         struct dc_bios *bios)
  59 {
  60         uint32_t acc_mode;
  61         REG_GET(BIOS_SCRATCH_6, S6_ACC_MODE, &acc_mode);
  62         return (acc_mode == 1);
  63 }
  64
  65
  66 void bios_set_scratch_acc_mode_change(
  67         struct dc_bios *bios)
  68 {
  69         REG_UPDATE(BIOS_SCRATCH_6, S6_ACC_MODE, 1);
  70 }
  71
  72
  73 void bios_set_scratch_critical_state(
  74         struct dc_bios *bios,
  75         bool state)
  76 {
  77         uint32_t critial_state = state ? 1 : 0;
  78         REG_UPDATE(BIOS_SCRATCH_6, S6_CRITICAL_STATE, critial_state);
  79 }
  80
  81 uint32_t bios_get_vga_enabled_displays(
  82         struct dc_bios *bios)
  83 {
  84         uint32_t active_disp = 1;
  85
  86         active_disp = REG_READ(BIOS_SCRATCH_3) & 0XFFFF;
  87         return active_disp;
  88 }
  89