/* * intel_hdmi_lpe_audio.h - Intel HDMI LPE audio driver * * Copyright (C) 2016 Intel Corp * Authors: Sailaja Bandarupalli * Ramesh Babu K V * Vaibhav Agarwal * Jerome Anand * Aravind Siddappaji * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #ifndef __INTEL_HDMI_LPE_AUDIO_H #define __INTEL_HDMI_LPE_AUDIO_H #define HAD_MAX_DEVICES 1 #define HAD_MIN_CHANNEL 2 #define HAD_MAX_CHANNEL 8 #define HAD_NUM_OF_RING_BUFS 4 /* max 20bit address, aligned to 64 */ #define HAD_MAX_BUFFER ((1024 * 1024 - 1) & ~0x3f) #define HAD_DEFAULT_BUFFER (600 * 1024) /* default prealloc size */ #define HAD_MAX_PERIODS 256 /* arbitrary, but should suffice */ #define HAD_MIN_PERIODS 2 #define HAD_MAX_PERIOD_BYTES ((HAD_MAX_BUFFER / HAD_MIN_PERIODS) & ~0x3f) #define HAD_MIN_PERIOD_BYTES 1024 /* might be smaller */ #define HAD_FIFO_SIZE 0 /* fifo not being used */ #define MAX_SPEAKERS 8 #define AUD_SAMPLE_RATE_32 32000 #define AUD_SAMPLE_RATE_44_1 44100 #define AUD_SAMPLE_RATE_48 48000 #define AUD_SAMPLE_RATE_88_2 88200 #define AUD_SAMPLE_RATE_96 96000 #define AUD_SAMPLE_RATE_176_4 176400 #define AUD_SAMPLE_RATE_192 192000 #define HAD_MIN_RATE AUD_SAMPLE_RATE_32 #define HAD_MAX_RATE AUD_SAMPLE_RATE_192 #define DIS_SAMPLE_RATE_25_2 25200 #define DIS_SAMPLE_RATE_27 27000 #define DIS_SAMPLE_RATE_54 54000 #define DIS_SAMPLE_RATE_74_25 74250 #define DIS_SAMPLE_RATE_148_5 148500 #define HAD_REG_WIDTH 0x08 #define HAD_MAX_HW_BUFS 0x04 #define HAD_MAX_DIP_WORDS 16 #define INTEL_HAD "IntelHdmiLpeAudio" /* DP Link Rates */ #define DP_2_7_GHZ 270000 #define DP_1_62_GHZ 162000 /* Maud Values */ #define AUD_SAMPLE_RATE_32_DP_2_7_MAUD_VAL 1988 #define AUD_SAMPLE_RATE_44_1_DP_2_7_MAUD_VAL 2740 #define AUD_SAMPLE_RATE_48_DP_2_7_MAUD_VAL 2982 #define AUD_SAMPLE_RATE_88_2_DP_2_7_MAUD_VAL 5480 #define AUD_SAMPLE_RATE_96_DP_2_7_MAUD_VAL 5965 #define AUD_SAMPLE_RATE_176_4_DP_2_7_MAUD_VAL 10961 #define HAD_MAX_RATE_DP_2_7_MAUD_VAL 11930 #define AUD_SAMPLE_RATE_32_DP_1_62_MAUD_VAL 3314 #define AUD_SAMPLE_RATE_44_1_DP_1_62_MAUD_VAL 4567 #define AUD_SAMPLE_RATE_48_DP_1_62_MAUD_VAL 4971 #define AUD_SAMPLE_RATE_88_2_DP_1_62_MAUD_VAL 9134 #define AUD_SAMPLE_RATE_96_DP_1_62_MAUD_VAL 9942 #define AUD_SAMPLE_RATE_176_4_DP_1_62_MAUD_VAL 18268 #define HAD_MAX_RATE_DP_1_62_MAUD_VAL 19884 /* Naud Value */ #define DP_NAUD_VAL 32768 /* HDMI Controller register offsets - audio domain common */ /* Base address for below regs = 0x65000 */ enum hdmi_ctrl_reg_offset_common { AUDIO_HDMI_CONFIG_A = 0x000, AUDIO_HDMI_CONFIG_B = 0x800, AUDIO_HDMI_CONFIG_C = 0x900, }; /* HDMI controller register offsets */ enum hdmi_ctrl_reg_offset { AUD_CONFIG = 0x0, AUD_CH_STATUS_0 = 0x08, AUD_CH_STATUS_1 = 0x0C, AUD_HDMI_CTS = 0x10, AUD_N_ENABLE = 0x14, AUD_SAMPLE_RATE = 0x18, AUD_BUF_CONFIG = 0x20, AUD_BUF_CH_SWAP = 0x24, AUD_BUF_A_ADDR = 0x40, AUD_BUF_A_LENGTH = 0x44, AUD_BUF_B_ADDR = 0x48, AUD_BUF_B_LENGTH = 0x4c, AUD_BUF_C_ADDR = 0x50, AUD_BUF_C_LENGTH = 0x54, AUD_BUF_D_ADDR = 0x58, AUD_BUF_D_LENGTH = 0x5c, AUD_CNTL_ST = 0x60, AUD_HDMI_STATUS = 0x64, /* v2 */ AUD_HDMIW_INFOFR = 0x68, /* v2 */ }; /* * CEA speaker placement: * * FL FLC FC FRC FR * * LFE * * RL RLC RC RRC RR * * The Left/Right Surround channel _notions_ LS/RS in SMPTE 320M * corresponds to CEA RL/RR; The SMPTE channel _assignment_ C/LFE is * swapped to CEA LFE/FC. */ enum cea_speaker_placement { FL = (1 << 0), /* Front Left */ FC = (1 << 1), /* Front Center */ FR = (1 << 2), /* Front Right */ FLC = (1 << 3), /* Front Left Center */ FRC = (1 << 4), /* Front Right Center */ RL = (1 << 5), /* Rear Left */ RC = (1 << 6), /* Rear Center */ RR = (1 << 7), /* Rear Right */ RLC = (1 << 8), /* Rear Left Center */ RRC = (1 << 9), /* Rear Right Center */ LFE = (1 << 10), /* Low Frequency Effect */ }; struct cea_channel_speaker_allocation { int ca_index; int speakers[8]; /* derived values, just for convenience */ int channels; int spk_mask; }; struct channel_map_table { unsigned char map; /* ALSA API channel map position */ unsigned char cea_slot; /* CEA slot value */ int spk_mask; /* speaker position bit mask */ }; /* Audio configuration */ union aud_cfg { struct { u32 aud_en:1; u32 layout:1; u32 fmt:2; u32 num_ch:3; u32 set:1; u32 flat:1; u32 val_bit:1; u32 user_bit:1; u32 underrun:1; u32 packet_mode:1; u32 left_align:1; u32 bogus_sample:1; u32 dp_modei:1; u32 rsvd:16; } regx; u32 regval; }; #define AUD_CONFIG_BLOCK_BIT (1 << 7) #define AUD_CONFIG_VALID_BIT (1 << 9) #define AUD_CONFIG_DP_MODE (1 << 15) /* Audio Channel Status 0 Attributes */ union aud_ch_status_0 { struct { u32 ch_status:1; u32 lpcm_id:1; u32 cp_info:1; u32 format:3; u32 mode:2; u32 ctg_code:8; u32 src_num:4; u32 ch_num:4; u32 samp_freq:4; u32 clk_acc:2; u32 rsvd:2; } regx; u32 regval; }; /* Audio Channel Status 1 Attributes */ union aud_ch_status_1 { struct { u32 max_wrd_len:1; u32 wrd_len:3; u32 rsvd:28; } regx; u32 regval; }; /* CTS register */ union aud_hdmi_cts { struct { u32 cts_val:24; u32 en_cts_prog:1; u32 rsvd:7; } regx; u32 regval; }; /* N register */ union aud_hdmi_n_enable { struct { u32 n_val:24; u32 en_n_prog:1; u32 rsvd:7; } regx; u32 regval; }; /* Audio Buffer configurations */ union aud_buf_config { struct { u32 audio_fifo_watermark:8; u32 dma_fifo_watermark:3; u32 rsvd0:5; u32 aud_delay:8; u32 rsvd1:8; } regx; u32 regval; }; /* Audio Sample Swapping offset */ union aud_buf_ch_swap { struct { u32 first_0:3; u32 second_0:3; u32 first_1:3; u32 second_1:3; u32 first_2:3; u32 second_2:3; u32 first_3:3; u32 second_3:3; u32 rsvd:8; } regx; u32 regval; }; /* Address for Audio Buffer */ union aud_buf_addr { struct { u32 valid:1; u32 intr_en:1; u32 rsvd:4; u32 addr:26; } regx; u32 regval; }; #define AUD_BUF_VALID (1U << 0) #define AUD_BUF_INTR_EN (1U << 1) /* Length of Audio Buffer */ union aud_buf_len { struct { u32 buf_len:20; u32 rsvd:12; } regx; u32 regval; }; /* Audio Control State Register offset */ union aud_ctrl_st { struct { u32 ram_addr:4; u32 eld_ack:1; u32 eld_addr:4; u32 eld_buf_size:5; u32 eld_valid:1; u32 cp_ready:1; u32 dip_freq:2; u32 dip_idx:3; u32 dip_en_sta:4; u32 rsvd:7; } regx; u32 regval; }; /* Audio HDMI Widget Data Island Packet offset */ union aud_info_frame1 { struct { u32 pkt_type:8; u32 ver_num:8; u32 len:5; u32 rsvd:11; } regx; u32 regval; }; /* DIP frame 2 */ union aud_info_frame2 { struct { u32 chksum:8; u32 chnl_cnt:3; u32 rsvd0:1; u32 coding_type:4; u32 smpl_size:2; u32 smpl_freq:3; u32 rsvd1:3; u32 format:8; } regx; u32 regval; }; /* DIP frame 3 */ union aud_info_frame3 { struct { u32 chnl_alloc:8; u32 rsvd0:3; u32 lsv:4; u32 dm_inh:1; u32 rsvd1:16; } regx; u32 regval; }; /* AUD_HDMI_STATUS bits */ #define HDMI_AUDIO_UNDERRUN (1U << 31) #define HDMI_AUDIO_BUFFER_DONE (1U << 29) /* AUD_HDMI_STATUS register mask */ #define AUD_CONFIG_MASK_UNDERRUN 0xC0000000 #define AUD_CONFIG_MASK_SRDBG 0x00000002 #define AUD_CONFIG_MASK_FUNCRST 0x00000001 #endif