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 uint32_t state)
69{
70 REG_UPDATE(BIOS_SCRATCH_6, S6_ACC_MODE, state);
71}
72
73
74void bios_set_scratch_critical_state(
75 struct dc_bios *bios,
76 bool state)
77{
78 uint32_t critial_state = state ? 1 : 0;
79 REG_UPDATE(BIOS_SCRATCH_6, S6_CRITICAL_STATE, critial_state);
80}
81

source code of linux/drivers/gpu/drm/amd/display/dc/bios/bios_parser_helper.c