^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef SOUND_FIREWIRE_AMDTP_H_INCLUDED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define SOUND_FIREWIRE_AMDTP_H_INCLUDED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <sound/asound.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "packets-buffer.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * enum cip_flags - describes details of the streaming protocol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * @CIP_NONBLOCKING: In non-blocking mode, each packet contains
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * sample_rate/8000 samples, with rounding up or down to adjust
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * for clock skew and left-over fractional samples. This should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * be used if supported by the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * @CIP_BLOCKING: In blocking mode, each packet contains either zero or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * SYT_INTERVAL samples, with these two types alternating so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * the overall sample rate comes out right.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * @CIP_EMPTY_WITH_TAG0: Only for in-stream. Empty in-packets have TAG0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * @CIP_DBC_IS_END_EVENT: The value of dbc in an packet corresponds to the end
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * of event in the packet. Out of IEC 61883.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * @CIP_WRONG_DBS: Only for in-stream. The value of dbs is wrong in in-packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * The value of data_block_quadlets is used instead of reported value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * @CIP_SKIP_DBC_ZERO_CHECK: Only for in-stream. Packets with zero in dbc is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * skipped for detecting discontinuity.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * @CIP_EMPTY_HAS_WRONG_DBC: Only for in-stream. The value of dbc in empty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * packet is wrong but the others are correct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * @CIP_JUMBO_PAYLOAD: Only for in-stream. The number of data blocks in an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * packet is larger than IEC 61883-6 defines. Current implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * allows 5 times as large as IEC 61883-6 defines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * @CIP_HEADER_WITHOUT_EOH: Only for in-stream. CIP Header doesn't include
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * valid EOH.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * @CIP_NO_HEADERS: a lack of headers in packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * @CIP_UNALIGHED_DBC: Only for in-stream. The value of dbc is not alighed to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * the value of current SYT_INTERVAL; e.g. initial value is not zero.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) enum cip_flags {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) CIP_NONBLOCKING = 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) CIP_BLOCKING = 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) CIP_EMPTY_WITH_TAG0 = 0x02,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) CIP_DBC_IS_END_EVENT = 0x04,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) CIP_WRONG_DBS = 0x08,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) CIP_SKIP_DBC_ZERO_CHECK = 0x10,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) CIP_EMPTY_HAS_WRONG_DBC = 0x20,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) CIP_JUMBO_PAYLOAD = 0x40,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) CIP_HEADER_WITHOUT_EOH = 0x80,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) CIP_NO_HEADER = 0x100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) CIP_UNALIGHED_DBC = 0x200,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * enum cip_sfc - supported Sampling Frequency Codes (SFCs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * @CIP_SFC_32000: 32,000 data blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * @CIP_SFC_44100: 44,100 data blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * @CIP_SFC_48000: 48,000 data blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * @CIP_SFC_88200: 88,200 data blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * @CIP_SFC_96000: 96,000 data blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * @CIP_SFC_176400: 176,400 data blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * @CIP_SFC_192000: 192,000 data blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * @CIP_SFC_COUNT: the number of supported SFCs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * These values are used to show nominal Sampling Frequency Code in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * Format Dependent Field (FDF) of AMDTP packet header. In IEC 61883-6:2002,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * this code means the number of events per second. Actually the code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * represents the number of data blocks transferred per second in an AMDTP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) * stream.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * In IEC 61883-6:2005, some extensions were added to support more types of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) * data such as 'One Bit LInear Audio', therefore the meaning of SFC became
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) * different depending on the types.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) * Currently our implementation is compatible with IEC 61883-6:2002.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) enum cip_sfc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) CIP_SFC_32000 = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) CIP_SFC_44100 = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) CIP_SFC_48000 = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) CIP_SFC_88200 = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) CIP_SFC_96000 = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) CIP_SFC_176400 = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) CIP_SFC_192000 = 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) CIP_SFC_COUNT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct fw_unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct fw_iso_context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) struct snd_pcm_substream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct snd_pcm_runtime;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) enum amdtp_stream_direction {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) AMDTP_OUT_STREAM = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) AMDTP_IN_STREAM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct pkt_desc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) u32 cycle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) u32 syt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) unsigned int data_blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) unsigned int data_block_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) __be32 *ctx_payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct amdtp_stream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) typedef unsigned int (*amdtp_stream_process_ctx_payloads_t)(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct amdtp_stream *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) const struct pkt_desc *desc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) unsigned int packets,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct snd_pcm_substream *pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct amdtp_domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct amdtp_stream {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct fw_unit *unit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) enum cip_flags flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) enum amdtp_stream_direction direction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct mutex mutex;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* For packet processing. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct fw_iso_context *context;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct iso_packets_buffer buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) unsigned int queue_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) int packet_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct pkt_desc *pkt_descs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int tag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) unsigned int ctx_header_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) // limit for payload of iso packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) unsigned int max_ctx_payload_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) // For quirks of CIP headers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) // Fixed interval of dbc between previos/current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) // packets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) unsigned int dbc_interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) } tx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) // To calculate CIP data blocks and tstamp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) unsigned int transfer_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) unsigned int seq_index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) // To generate CIP header.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) unsigned int fdf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) int syt_override;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) // To generate constant hardware IRQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) unsigned int event_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) unsigned int events_per_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) } rx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) } ctx_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* For CIP headers. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) unsigned int source_node_id_field;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) unsigned int data_block_quadlets;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned int data_block_counter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) unsigned int sph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) unsigned int fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) /* Internal flags. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) enum cip_sfc sfc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) unsigned int syt_interval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /* For a PCM substream processing. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct snd_pcm_substream *pcm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct work_struct period_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) snd_pcm_uframes_t pcm_buffer_pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) unsigned int pcm_period_pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /* To wait for first packet. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) bool callbacked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) wait_queue_head_t callback_wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) u32 start_cycle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) /* For backends to process data blocks. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) void *protocol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) amdtp_stream_process_ctx_payloads_t process_ctx_payloads;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) // For domain.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) int channel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) int speed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct amdtp_domain *domain;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) enum amdtp_stream_direction dir, enum cip_flags flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) unsigned int fmt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) amdtp_stream_process_ctx_payloads_t process_ctx_payloads,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) unsigned int protocol_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) void amdtp_stream_destroy(struct amdtp_stream *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) int amdtp_stream_set_parameters(struct amdtp_stream *s, unsigned int rate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) unsigned int data_block_quadlets);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) unsigned int amdtp_stream_get_max_payload(struct amdtp_stream *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) void amdtp_stream_update(struct amdtp_stream *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) int amdtp_stream_add_pcm_hw_constraints(struct amdtp_stream *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct snd_pcm_runtime *runtime);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) void amdtp_stream_pcm_prepare(struct amdtp_stream *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) void amdtp_stream_pcm_abort(struct amdtp_stream *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) extern const unsigned int amdtp_syt_intervals[CIP_SFC_COUNT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) extern const unsigned int amdtp_rate_table[CIP_SFC_COUNT];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * amdtp_stream_running - check stream is running or not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * @s: the AMDTP stream
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * If this function returns true, the stream is running.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static inline bool amdtp_stream_running(struct amdtp_stream *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return !IS_ERR(s->context);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * amdtp_streaming_error - check for streaming error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * @s: the AMDTP stream
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * If this function returns true, the stream's packet queue has stopped due to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * an asynchronous error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static inline bool amdtp_streaming_error(struct amdtp_stream *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return s->packet_index < 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * amdtp_stream_pcm_running - check PCM substream is running or not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) * @s: the AMDTP stream
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * If this function returns true, PCM substream in the AMDTP stream is running.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) static inline bool amdtp_stream_pcm_running(struct amdtp_stream *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return !!s->pcm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) * amdtp_stream_pcm_trigger - start/stop playback from a PCM device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * @s: the AMDTP stream
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * @pcm: the PCM device to be started, or %NULL to stop the current device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * Call this function on a running isochronous stream to enable the actual
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * transmission of PCM data. This function should be called from the PCM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * device's .trigger callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) static inline void amdtp_stream_pcm_trigger(struct amdtp_stream *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) struct snd_pcm_substream *pcm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) WRITE_ONCE(s->pcm, pcm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static inline bool cip_sfc_is_base_44100(enum cip_sfc sfc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) return sfc & 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * amdtp_stream_wait_callback - sleep till callbacked or timeout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) * @s: the AMDTP stream
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * @timeout: msec till timeout
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * If this function return false, the AMDTP stream should be stopped.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) static inline bool amdtp_stream_wait_callback(struct amdtp_stream *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) unsigned int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return wait_event_timeout(s->callback_wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) s->callbacked == true,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) msecs_to_jiffies(timeout)) > 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct seq_desc {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) unsigned int syt_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) unsigned int data_blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) struct amdtp_domain {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) struct list_head streams;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) unsigned int events_per_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) unsigned int events_per_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) struct amdtp_stream *irq_target;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct seq_desc *seq_descs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) unsigned int seq_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) unsigned int seq_tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) unsigned int data_block_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) unsigned int syt_offset_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) unsigned int last_syt_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) int amdtp_domain_init(struct amdtp_domain *d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) void amdtp_domain_destroy(struct amdtp_domain *d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) int amdtp_domain_add_stream(struct amdtp_domain *d, struct amdtp_stream *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) int channel, int speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) int amdtp_domain_start(struct amdtp_domain *d, unsigned int ir_delay_cycle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) void amdtp_domain_stop(struct amdtp_domain *d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) static inline int amdtp_domain_set_events_per_period(struct amdtp_domain *d,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) unsigned int events_per_period,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) unsigned int events_per_buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) d->events_per_period = events_per_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) d->events_per_buffer = events_per_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) unsigned long amdtp_domain_stream_pcm_pointer(struct amdtp_domain *d,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) struct amdtp_stream *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) int amdtp_domain_stream_pcm_ack(struct amdtp_domain *d, struct amdtp_stream *s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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