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 47 static 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 66 static 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 75 static 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 98 static 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 }; 103 104 void 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 } 120