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  1/*
  2 * Copyright 2019 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
 27#include "dc_bios_types.h"
 28#include "hw_shared.h"
 29#include "dcn31_apg.h"
 30#include "reg_helper.h"
 31
 32#define DC_LOGGER \
 33		apg31->base.ctx->logger
 34
 35#define REG(reg)\
 36	(apg31->regs->reg)
 37
 38#undef FN
 39#define FN(reg_name, field_name) \
 40	apg31->apg_shift->field_name, apg31->apg_mask->field_name
 41
 42
 43#define CTX \
 44	apg31->base.ctx
 45
 46
 47static void apg31_enable(
 48	struct apg *apg)
 49{
 50	struct dcn31_apg *apg31 = DCN31_APG_FROM_APG(apg);
 51
 52	/* Reset APG */
 53	REG_UPDATE(APG_CONTROL, APG_RESET, 1);
 54	REG_WAIT(APG_CONTROL,
 55			APG_RESET_DONE, 1,
 56			1, 10);
 57	REG_UPDATE(APG_CONTROL, APG_RESET, 0);
 58	REG_WAIT(APG_CONTROL,
 59			APG_RESET_DONE, 0,
 60			1, 10);
 61
 62	/* Enable APG */
 63	REG_UPDATE(APG_CONTROL2, APG_ENABLE, 1);
 64}
 65
 66static void apg31_disable(
 67	struct apg *apg)
 68{
 69	struct dcn31_apg *apg31 = DCN31_APG_FROM_APG(apg);
 70
 71	/* Disable APG */
 72	REG_UPDATE(APG_CONTROL2, APG_ENABLE, 0);
 73}
 74
 75static void apg31_se_audio_setup(
 76	struct apg *apg,
 77	unsigned int az_inst,
 78	struct audio_info *audio_info)
 79{
 80	struct dcn31_apg *apg31 = DCN31_APG_FROM_APG(apg);
 81
 82	ASSERT(audio_info);
 83	/* This should not happen.it does so we don't get BSOD*/
 84	if (audio_info == NULL)
 85		return;
 86
 87	/* DisplayPort only allows for one audio stream with stream ID 0 */
 88	REG_UPDATE(APG_CONTROL2, APG_DP_AUDIO_STREAM_ID, 0);
 89
 90	/* When running in "pair mode", pairs of audio channels have their own enable
 91	 * this is for really old audio drivers */
 92	REG_UPDATE(APG_DBG_GEN_CONTROL, APG_DBG_AUDIO_CHANNEL_ENABLE, 0xFF);
 93
 94	/* Disable forced mem power off */
 95	REG_UPDATE(APG_MEM_PWR, APG_MEM_PWR_FORCE, 0);
 96}
 97
 98static struct apg_funcs dcn31_apg_funcs = {
 99	.se_audio_setup			= apg31_se_audio_setup,
100	.enable_apg			= apg31_enable,
101	.disable_apg			= apg31_disable,
102};
103
104void apg31_construct(struct dcn31_apg *apg31,
105	struct dc_context *ctx,
106	uint32_t inst,
107	const struct dcn31_apg_registers *apg_regs,
108	const struct dcn31_apg_shift *apg_shift,
109	const struct dcn31_apg_mask *apg_mask)
110{
111	apg31->base.ctx = ctx;
112
113	apg31->base.inst = inst;
114	apg31->base.funcs = &dcn31_apg_funcs;
115
116	apg31->regs = apg_regs;
117	apg31->apg_shift = apg_shift;
118	apg31->apg_mask = apg_mask;
119}