LXR linux/drivers/gpu/drm/amd/display/dc/bios/bios_parser

   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
  36uint8_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
  57bool 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
  66void 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
  73void 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
  81uint32_t bios_get_vga_enabled_displays(
  82        struct dc_bios *bios)
  83{
  84        uint32_t active_disp = 1;
  85
  86        if (bios->regs->BIOS_SCRATCH_3) /*follow up with other asic, todo*/
  87                active_disp = REG_READ(BIOS_SCRATCH_3) & 0XFFFF;
  88        return active_disp;
  89}
  90
  91