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linux/sound/x86/intel_hdmi_lpe_audio.h
Takashi Iwai da86480974 ALSA: x86: Flatten two abstraction layers 
This is the final stage for a big clean-up series.  Here we flatten
the two layers into one.  Formerly, the implementation was split to
HDMI "shell" that talks with the platform device, and HDMI audio part
that communicates via caps and other event handlers.  All these would
be good if there were multiple instantiations or if there were data
protection.  But neither are true in our case.  That said, it'll be
easier to have a flat driver structure in the end.

In this patch, the former struct hdmi_lpe_audio_ctx is forged into the
existing struct snd_intelhad.  The latter has already a few members
that are basically the copy from the former.  Only a few new members
for the lowlevel I/O are added by this change.

Then, the had_get_caps() and had_set_caps() are simply replaced with
the direct calls to copy the data in the struct fields.  Also, the
had_event_handler() calls are replaced with the direct call for each
event as well.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2017-02-03 17:31:35 +01:00

639 lines
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/*
* intel_hdmi_lpe_audio.h - Intel HDMI LPE audio driver
*
* Copyright (C) 2016 Intel Corp
* Authors: Sailaja Bandarupalli <sailaja.bandarupalli@intel.com>
* Ramesh Babu K V <ramesh.babu@intel.com>
* Vaibhav Agarwal <vaibhav.agarwal@intel.com>
* Jerome Anand <jerome.anand@intel.com>
* Aravind Siddappaji <aravindx.siddappaji@intel.com>
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* 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
#include <linux/types.h>
#include <sound/initval.h>
#include <linux/version.h>
#include <linux/pm_runtime.h>
#include <linux/platform_device.h>
#include <sound/asoundef.h>
#include <sound/control.h>
#include <sound/pcm.h>
#define AUD_CONFIG_VALID_BIT (1<<9)
#define AUD_CONFIG_DP_MODE (1<<15)
#define AUD_CONFIG_BLOCK_BIT (1<<7)
#define HMDI_LPE_AUDIO_DRIVER_NAME "intel-hdmi-lpe-audio"
#define HAD_MAX_DEVICES 1
#define HAD_MIN_CHANNEL 2
#define HAD_MAX_CHANNEL 8
#define HAD_NUM_OF_RING_BUFS 4
/* Assume 192KHz, 8channel, 25msec period */
#define HAD_MAX_BUFFER (600*1024)
#define HAD_MIN_BUFFER (32*1024)
#define HAD_MAX_PERIODS 4
#define HAD_MIN_PERIODS 4
#define HAD_MAX_PERIOD_BYTES (HAD_MAX_BUFFER/HAD_MIN_PERIODS)
#define HAD_MIN_PERIOD_BYTES 256
#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
/* _AUD_CONFIG register MASK */
#define AUD_CONFIG_MASK_UNDERRUN 0xC0000000
#define AUD_CONFIG_MASK_SRDBG 0x00000002
#define AUD_CONFIG_MASK_FUNCRST 0x00000001
#define MAX_CNT 0xFF
#define HAD_SUSPEND_DELAY 1000
#define OTM_HDMI_ELD_SIZE 128
union otm_hdmi_eld_t {
unsigned char eld_data[OTM_HDMI_ELD_SIZE];
struct {
/* Byte[0] = ELD Version Number */
union {
unsigned char byte0;
struct {
unsigned char reserved:3; /* Reserf */
unsigned char eld_ver:5; /* ELD Version Number */
/* 00000b - reserved
* 00001b - first rev, obsoleted
* 00010b - version 2, supporting CEA version
* 861D or below
* 00011b:11111b - reserved
* for future
*/
};
};
/* Byte[1] = Vendor Version Field */
union {
unsigned char vendor_version;
struct {
unsigned char reserved1:3;
unsigned char veld_ver:5; /* Version number of the ELD
* extension. This value is
* provisioned and unique to
* each vendor.
*/
};
};
/* Byte[2] = Baseline Length field */
unsigned char baseline_eld_length; /* Length of the Baseline structure
* divided by Four.
*/
/* Byte [3] = Reserved for future use */
unsigned char byte3;
/* Starting of the BaseLine EELD structure
* Byte[4] = Monitor Name Length
*/
union {
unsigned char byte4;
struct {
unsigned char mnl:5;
unsigned char cea_edid_rev_id:3;
};
};
/* Byte[5] = Capabilities */
union {
unsigned char capabilities;
struct {
unsigned char hdcp:1; /* HDCP support */
unsigned char ai_support:1; /* AI support */
unsigned char connection_type:2; /* Connection type
* 00 - HDMI
* 01 - DP
* 10 -11 Reserved
* for future
* connection types
*/
unsigned char sadc:4; /* Indicates number of 3 bytes
* Short Audio Descriptors.
*/
};
};
/* Byte[6] = Audio Synch Delay */
unsigned char audio_synch_delay; /* Amount of time reported by the
* sink that the video trails audio
* in milliseconds.
*/
/* Byte[7] = Speaker Allocation Block */
union {
unsigned char speaker_allocation_block;
struct {
unsigned char flr:1; /*Front Left and Right channels*/
unsigned char lfe:1; /*Low Frequency Effect channel*/
unsigned char fc:1; /*Center transmission channel*/
unsigned char rlr:1; /*Rear Left and Right channels*/
unsigned char rc:1; /*Rear Center channel*/
unsigned char flrc:1; /*Front left and Right of Center
*transmission channels
*/
unsigned char rlrc:1; /*Rear left and Right of Center
*transmission channels
*/
unsigned char reserved3:1; /* Reserved */
};
};
/* Byte[8 - 15] - 8 Byte port identification value */
unsigned char port_id_value[8];
/* Byte[16 - 17] - 2 Byte Manufacturer ID */
unsigned char manufacturer_id[2];
/* Byte[18 - 19] - 2 Byte Product ID */
unsigned char product_id[2];
/* Byte [20-83] - 64 Bytes of BaseLine Data */
unsigned char mn_sand_sads[64]; /* This will include
* - ASCII string of Monitor name
* - List of 3 byte SADs
* - Zero padding
*/
/* Vendor ELD Block should continue here!
* No Vendor ELD block defined as of now.
*/
} __packed;
};
/**
* enum had_status - Audio stream states
*
* @STREAM_INIT: Stream initialized
* @STREAM_RUNNING: Stream running
* @STREAM_PAUSED: Stream paused
* @STREAM_DROPPED: Stream dropped
*/
enum had_stream_status {
STREAM_INIT = 0,
STREAM_RUNNING = 1,
STREAM_PAUSED = 2,
STREAM_DROPPED = 3
};
/**
* enum had_status_stream - HAD stream states
*/
enum had_status_stream {
HAD_INIT = 0,
HAD_RUNNING_STREAM,
};
enum had_drv_status {
HAD_DRV_CONNECTED,
HAD_DRV_RUNNING,
HAD_DRV_DISCONNECTED,
HAD_DRV_SUSPENDED,
HAD_DRV_ERR,
};
/* enum intel_had_aud_buf_type - HDMI controller ring buffer types */
enum intel_had_aud_buf_type {
HAD_BUF_TYPE_A = 0,
HAD_BUF_TYPE_B = 1,
HAD_BUF_TYPE_C = 2,
HAD_BUF_TYPE_D = 3,
};
enum num_aud_ch {
CH_STEREO = 0,
CH_THREE_FOUR = 1,
CH_FIVE_SIX = 2,
CH_SEVEN_EIGHT = 3
};
/* 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_v1 {
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 = 0x68,
AUD_HDMIW_INFOFR = 0x114,
};
/*
* Delta changes in HDMI controller register offsets
* compare to v1 version
*/
enum hdmi_ctrl_reg_offset_v2 {
AUD_HDMI_STATUS_v2 = 0x64,
AUD_HDMIW_INFOFR_v2 = 0x68,
};
/*
* 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 */
};
/**
* union aud_cfg - Audio configuration
*
* @cfg_regx: individual register bits
* @cfg_regval: full register value
*
*/
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;
} cfg_regx_v2;
u32 cfg_regval;
};
/**
* union aud_ch_status_0 - Audio Channel Status 0 Attributes
*
* @status_0_regx:individual register bits
* @status_0_regval:full register value
*
*/
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;
} status_0_regx;
u32 status_0_regval;
};
/**
* union aud_ch_status_1 - Audio Channel Status 1 Attributes
*
* @status_1_regx: individual register bits
* @status_1_regval: full register value
*
*/
union aud_ch_status_1 {
struct {
u32 max_wrd_len:1;
u32 wrd_len:3;
u32 rsvd:28;
} status_1_regx;
u32 status_1_regval;
};
/**
* union aud_hdmi_cts - CTS register
*
* @cts_regx: individual register bits
* @cts_regval: full register value
*
*/
union aud_hdmi_cts {
struct {
u32 cts_val:24;
u32 en_cts_prog:1;
u32 rsvd:7;
} cts_regx_v2;
u32 cts_regval;
};
/**
* union aud_hdmi_n_enable - N register
*
* @n_regx: individual register bits
* @n_regval: full register value
*
*/
union aud_hdmi_n_enable {
struct {
u32 n_val:24;
u32 en_n_prog:1;
u32 rsvd:7;
} n_regx_v2;
u32 n_regval;
};
/**
* union aud_buf_config - Audio Buffer configurations
*
* @buf_cfg_regx: individual register bits
* @buf_cfgval: full register value
*
*/
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;
} buf_cfg_regx_v2;
u32 buf_cfgval;
};
/**
* union aud_buf_ch_swap - Audio Sample Swapping offset
*
* @buf_ch_swap_regx: individual register bits
* @buf_ch_swap_val: full register value
*
*/
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;
} buf_ch_swap_regx;
u32 buf_ch_swap_val;
};
/**
* union aud_buf_addr - Address for Audio Buffer
*
* @buf_addr_regx: individual register bits
* @buf_addr_val: full register value
*
*/
union aud_buf_addr {
struct {
u32 valid:1;
u32 intr_en:1;
u32 rsvd:4;
u32 addr:26;
} buf_addr_regx;
u32 buf_addr_val;
};
/**
* union aud_buf_len - Length of Audio Buffer
*
* @buf_len_regx: individual register bits
* @buf_len_val: full register value
*
*/
union aud_buf_len {
struct {
u32 buf_len:20;
u32 rsvd:12;
} buf_len_regx;
u32 buf_len_val;
};
/**
* union aud_ctrl_st - Audio Control State Register offset
*
* @ctrl_regx: individual register bits
* @ctrl_val: full register value
*
*/
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;
} ctrl_regx;
u32 ctrl_val;
};
/**
* union aud_info_frame1 - Audio HDMI Widget Data Island Packet offset
*
* @fr1_regx: individual register bits
* @fr1_val: full register value
*
*/
union aud_info_frame1 {
struct {
u32 pkt_type:8;
u32 ver_num:8;
u32 len:5;
u32 rsvd:11;
} fr1_regx;
u32 fr1_val;
};
/**
* union aud_info_frame2 - DIP frame 2
*
* @fr2_regx: individual register bits
* @fr2_val: full register value
*
*/
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;
} fr2_regx;
u32 fr2_val;
};
/**
* union aud_info_frame3 - DIP frame 3
*
* @fr3_regx: individual register bits
* @fr3_val: full register value
*
*/
union aud_info_frame3 {
struct {
u32 chnl_alloc:8;
u32 rsvd0:3;
u32 lsv:4;
u32 dm_inh:1;
u32 rsvd1:16;
} fr3_regx;
u32 fr3_val;
};
enum hdmi_connector_status {
hdmi_connector_status_connected = 1,
hdmi_connector_status_disconnected = 2,
hdmi_connector_status_unknown = 3,
};
#define HDMI_AUDIO_UNDERRUN (1UL<<31)
#define HDMI_AUDIO_BUFFER_DONE (1UL<<29)
#define PORT_ENABLE (1 << 31)
#define SDVO_AUDIO_ENABLE (1 << 6)
enum had_caps_list {
HAD_GET_ELD = 1,
HAD_GET_DISPLAY_RATE,
HAD_GET_DP_OUTPUT,
HAD_GET_LINK_RATE,
HAD_SET_ENABLE_AUDIO,
HAD_SET_DISABLE_AUDIO,
HAD_SET_ENABLE_AUDIO_INT,
HAD_SET_DISABLE_AUDIO_INT,
};
enum had_event_type {
HAD_EVENT_HOT_PLUG = 1,
HAD_EVENT_HOT_UNPLUG,
HAD_EVENT_MODE_CHANGING,
HAD_EVENT_AUDIO_BUFFER_DONE,
HAD_EVENT_AUDIO_BUFFER_UNDERRUN,
HAD_EVENT_QUERY_IS_AUDIO_BUSY,
HAD_EVENT_QUERY_IS_AUDIO_SUSPENDED,
};
#endif
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