1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * intel_hdmi_lpe_audio.h - Intel HDMI LPE audio driver
5 * Copyright (C) 2016 Intel Corp
6 * Authors: Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>
7 * Ramesh Babu K V <ramesh.babu@intel.com>
8 * Vaibhav Agarwal <vaibhav.agarwal@intel.com>
9 * Jerome Anand <jerome.anand@intel.com>
10 * Aravind Siddappaji <aravindx.siddappaji@intel.com>
11 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
13 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
15 #ifndef __INTEL_HDMI_LPE_AUDIO_H
16 #define __INTEL_HDMI_LPE_AUDIO_H
18 #define HAD_MIN_CHANNEL 2
19 #define HAD_MAX_CHANNEL 8
20 #define HAD_NUM_OF_RING_BUFS 4
22 /* max 20bit address, aligned to 64 */
23 #define HAD_MAX_BUFFER ((1024 * 1024 - 1) & ~0x3f)
24 #define HAD_DEFAULT_BUFFER (600 * 1024) /* default prealloc size */
25 #define HAD_MAX_PERIODS 256 /* arbitrary, but should suffice */
26 #define HAD_MIN_PERIODS 1
27 #define HAD_MAX_PERIOD_BYTES ((HAD_MAX_BUFFER / HAD_MIN_PERIODS) & ~0x3f)
28 #define HAD_MIN_PERIOD_BYTES 1024 /* might be smaller */
29 #define HAD_FIFO_SIZE 0 /* fifo not being used */
30 #define MAX_SPEAKERS 8
32 #define AUD_SAMPLE_RATE_32 32000
33 #define AUD_SAMPLE_RATE_44_1 44100
34 #define AUD_SAMPLE_RATE_48 48000
35 #define AUD_SAMPLE_RATE_88_2 88200
36 #define AUD_SAMPLE_RATE_96 96000
37 #define AUD_SAMPLE_RATE_176_4 176400
38 #define AUD_SAMPLE_RATE_192 192000
40 #define HAD_MIN_RATE AUD_SAMPLE_RATE_32
41 #define HAD_MAX_RATE AUD_SAMPLE_RATE_192
43 #define DIS_SAMPLE_RATE_25_2 25200
44 #define DIS_SAMPLE_RATE_27 27000
45 #define DIS_SAMPLE_RATE_54 54000
46 #define DIS_SAMPLE_RATE_74_25 74250
47 #define DIS_SAMPLE_RATE_148_5 148500
48 #define HAD_REG_WIDTH 0x08
49 #define HAD_MAX_DIP_WORDS 16
52 #define DP_2_7_GHZ 270000
53 #define DP_1_62_GHZ 162000
56 #define AUD_SAMPLE_RATE_32_DP_2_7_MAUD_VAL 1988
57 #define AUD_SAMPLE_RATE_44_1_DP_2_7_MAUD_VAL 2740
58 #define AUD_SAMPLE_RATE_48_DP_2_7_MAUD_VAL 2982
59 #define AUD_SAMPLE_RATE_88_2_DP_2_7_MAUD_VAL 5480
60 #define AUD_SAMPLE_RATE_96_DP_2_7_MAUD_VAL 5965
61 #define AUD_SAMPLE_RATE_176_4_DP_2_7_MAUD_VAL 10961
62 #define HAD_MAX_RATE_DP_2_7_MAUD_VAL 11930
63 #define AUD_SAMPLE_RATE_32_DP_1_62_MAUD_VAL 3314
64 #define AUD_SAMPLE_RATE_44_1_DP_1_62_MAUD_VAL 4567
65 #define AUD_SAMPLE_RATE_48_DP_1_62_MAUD_VAL 4971
66 #define AUD_SAMPLE_RATE_88_2_DP_1_62_MAUD_VAL 9134
67 #define AUD_SAMPLE_RATE_96_DP_1_62_MAUD_VAL 9942
68 #define AUD_SAMPLE_RATE_176_4_DP_1_62_MAUD_VAL 18268
69 #define HAD_MAX_RATE_DP_1_62_MAUD_VAL 19884
72 #define DP_NAUD_VAL 32768
74 /* HDMI Controller register offsets - audio domain common */
75 /* Base address for below regs = 0x65000 */
76 enum hdmi_ctrl_reg_offset_common {
77 AUDIO_HDMI_CONFIG_A = 0x000,
78 AUDIO_HDMI_CONFIG_B = 0x800,
79 AUDIO_HDMI_CONFIG_C = 0x900,
81 /* HDMI controller register offsets */
82 enum hdmi_ctrl_reg_offset {
84 AUD_CH_STATUS_0 = 0x08,
85 AUD_CH_STATUS_1 = 0x0C,
88 AUD_SAMPLE_RATE = 0x18,
89 AUD_BUF_CONFIG = 0x20,
90 AUD_BUF_CH_SWAP = 0x24,
91 AUD_BUF_A_ADDR = 0x40,
92 AUD_BUF_A_LENGTH = 0x44,
93 AUD_BUF_B_ADDR = 0x48,
94 AUD_BUF_B_LENGTH = 0x4c,
95 AUD_BUF_C_ADDR = 0x50,
96 AUD_BUF_C_LENGTH = 0x54,
97 AUD_BUF_D_ADDR = 0x58,
98 AUD_BUF_D_LENGTH = 0x5c,
100 AUD_HDMI_STATUS = 0x64, /* v2 */
101 AUD_HDMIW_INFOFR = 0x68, /* v2 */
104 /* Audio configuration */
108 u32 layout:1; /* LAYOUT[01], see below */
115 u32 underrun:1; /* 0: send null packets,
116 * 1: send silence stream
118 u32 packet_mode:1; /* 0: 32bit container, 1: 16bit */
119 u32 left_align:1; /* 0: MSB bits 0-23, 1: bits 8-31 */
120 u32 bogus_sample:1; /* bogus sample for odd channels */
121 u32 dp_modei:1; /* 0: HDMI, 1: DP */
127 #define AUD_CONFIG_VALID_BIT (1 << 9)
128 #define AUD_CONFIG_DP_MODE (1 << 15)
129 #define AUD_CONFIG_CH_MASK 0x70
130 #define LAYOUT0 0 /* interleaved stereo */
131 #define LAYOUT1 1 /* for channels > 2 */
133 /* Audio Channel Status 0 Attributes */
134 union aud_ch_status_0 {
144 u32 samp_freq:4; /* CH_STATUS_MAP_XXX */
151 /* samp_freq values - Sampling rate as per IEC60958 Ver 3 */
152 #define CH_STATUS_MAP_32KHZ 0x3
153 #define CH_STATUS_MAP_44KHZ 0x0
154 #define CH_STATUS_MAP_48KHZ 0x2
155 #define CH_STATUS_MAP_88KHZ 0x8
156 #define CH_STATUS_MAP_96KHZ 0xA
157 #define CH_STATUS_MAP_176KHZ 0xC
158 #define CH_STATUS_MAP_192KHZ 0xE
160 /* Audio Channel Status 1 Attributes */
161 union aud_ch_status_1 {
170 #define MAX_SMPL_WIDTH_20 0x0
171 #define MAX_SMPL_WIDTH_24 0x1
172 #define SMPL_WIDTH_16BITS 0x1
173 #define SMPL_WIDTH_24BITS 0x5
186 union aud_hdmi_n_enable {
195 /* Audio Buffer configurations */
196 union aud_buf_config {
198 u32 audio_fifo_watermark:8;
199 u32 dma_fifo_watermark:3;
207 #define FIFO_THRESHOLD 0xFE
208 #define DMA_FIFO_THRESHOLD 0x7
210 /* Audio Sample Swapping offset */
211 union aud_buf_ch_swap {
226 #define SWAP_LFE_CENTER 0x00fac4c8 /* octal 76543210 */
228 /* Address for Audio Buffer */
239 #define AUD_BUF_VALID (1U << 0)
240 #define AUD_BUF_INTR_EN (1U << 1)
242 /* Length of Audio Buffer */
251 /* Audio Control State Register offset */
268 /* Audio HDMI Widget Data Island Packet offset */
269 union aud_info_frame1 {
279 #define HDMI_INFO_FRAME_WORD1 0x000a0184
280 #define DP_INFO_FRAME_WORD1 0x00441b84
283 union aud_info_frame2 {
298 union aud_info_frame3 {
309 #define VALID_DIP_WORDS 3
311 /* AUD_HDMI_STATUS bits */
312 #define HDMI_AUDIO_UNDERRUN (1U << 31)
313 #define HDMI_AUDIO_BUFFER_DONE (1U << 29)
315 /* AUD_HDMI_STATUS register mask */
316 #define AUD_HDMI_STATUS_MASK_UNDERRUN 0xC0000000
317 #define AUD_HDMI_STATUS_MASK_SRDBG 0x00000002
318 #define AUD_HDMI_STATUSG_MASK_FUNCRST 0x00000001