forked from Minki/linux
d9cd0065c8
Fireworks firmware version 5.5 reports fix interval for dbc in each packet. For example, AudioFire4: CIP0 CIP1 Payload 00070000 900484FF 72 00070008 9004A8FF 72 00070008 90FFFFFF 02 00070010 9004D0FF 72 00070018 9004C4FF 72 00070020 9004E8FF 72 00070020 90FFFFFF 02 00070028 900410FE 72 The interval of each dbc should be 16 except for empty packet but it's still 8. This commit adds a flag for this quirk and codes to refer to a fixed value. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
261 lines
7.4 KiB
C
261 lines
7.4 KiB
C
#ifndef SOUND_FIREWIRE_AMDTP_H_INCLUDED
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#define SOUND_FIREWIRE_AMDTP_H_INCLUDED
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#include <linux/err.h>
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#include <linux/interrupt.h>
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#include <linux/mutex.h>
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#include <sound/asound.h>
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#include "packets-buffer.h"
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/**
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* enum cip_flags - describes details of the streaming protocol
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* @CIP_NONBLOCKING: In non-blocking mode, each packet contains
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* sample_rate/8000 samples, with rounding up or down to adjust
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* for clock skew and left-over fractional samples. This should
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* be used if supported by the device.
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* @CIP_BLOCKING: In blocking mode, each packet contains either zero or
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* SYT_INTERVAL samples, with these two types alternating so that
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* the overall sample rate comes out right.
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* @CIP_SYNC_TO_DEVICE: In sync to device mode, time stamp in out packets is
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* generated by in packets. Defaultly this driver generates timestamp.
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* @CIP_EMPTY_WITH_TAG0: Only for in-stream. Empty in-packets have TAG0.
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* @CIP_DBC_IS_END_EVENT: Only for in-stream. The value of dbc in an in-packet
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* corresponds to the end of event in the packet. Out of IEC 61883.
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* @CIP_WRONG_DBS: Only for in-stream. The value of dbs is wrong in in-packets.
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* The value of data_block_quadlets is used instead of reported value.
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*/
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enum cip_flags {
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CIP_NONBLOCKING = 0x00,
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CIP_BLOCKING = 0x01,
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CIP_SYNC_TO_DEVICE = 0x02,
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CIP_EMPTY_WITH_TAG0 = 0x04,
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CIP_DBC_IS_END_EVENT = 0x08,
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CIP_WRONG_DBS = 0x10,
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};
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/**
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* enum cip_sfc - a stream's sample rate
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*/
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enum cip_sfc {
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CIP_SFC_32000 = 0,
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CIP_SFC_44100 = 1,
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CIP_SFC_48000 = 2,
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CIP_SFC_88200 = 3,
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CIP_SFC_96000 = 4,
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CIP_SFC_176400 = 5,
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CIP_SFC_192000 = 6,
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CIP_SFC_COUNT
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};
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#define AMDTP_IN_PCM_FORMAT_BITS SNDRV_PCM_FMTBIT_S32
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#define AMDTP_OUT_PCM_FORMAT_BITS (SNDRV_PCM_FMTBIT_S16 | \
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SNDRV_PCM_FMTBIT_S32)
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/*
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* This module supports maximum 64 PCM channels for one PCM stream
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* This is for our convenience.
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*/
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#define AMDTP_MAX_CHANNELS_FOR_PCM 64
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/*
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* AMDTP packet can include channels for MIDI conformant data.
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* Each MIDI conformant data channel includes 8 MPX-MIDI data stream.
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* Each MPX-MIDI data stream includes one data stream from/to MIDI ports.
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*
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* This module supports maximum 1 MIDI conformant data channels.
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* Then this AMDTP packets can transfer maximum 8 MIDI data streams.
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*/
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#define AMDTP_MAX_CHANNELS_FOR_MIDI 1
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struct fw_unit;
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struct fw_iso_context;
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struct snd_pcm_substream;
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struct snd_pcm_runtime;
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struct snd_rawmidi_substream;
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enum amdtp_stream_direction {
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AMDTP_OUT_STREAM = 0,
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AMDTP_IN_STREAM
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};
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struct amdtp_stream {
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struct fw_unit *unit;
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enum cip_flags flags;
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enum amdtp_stream_direction direction;
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struct fw_iso_context *context;
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struct mutex mutex;
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enum cip_sfc sfc;
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unsigned int data_block_quadlets;
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unsigned int pcm_channels;
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unsigned int midi_ports;
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void (*transfer_samples)(struct amdtp_stream *s,
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struct snd_pcm_substream *pcm,
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__be32 *buffer, unsigned int frames);
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u8 pcm_positions[AMDTP_MAX_CHANNELS_FOR_PCM];
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u8 midi_position;
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unsigned int syt_interval;
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unsigned int transfer_delay;
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unsigned int source_node_id_field;
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struct iso_packets_buffer buffer;
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struct snd_pcm_substream *pcm;
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struct tasklet_struct period_tasklet;
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int packet_index;
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unsigned int data_block_counter;
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unsigned int data_block_state;
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unsigned int last_syt_offset;
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unsigned int syt_offset_state;
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unsigned int pcm_buffer_pointer;
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unsigned int pcm_period_pointer;
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bool pointer_flush;
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struct snd_rawmidi_substream *midi[AMDTP_MAX_CHANNELS_FOR_MIDI * 8];
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/* quirk: fixed interval of dbc between previos/current packets. */
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unsigned int tx_dbc_interval;
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bool callbacked;
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wait_queue_head_t callback_wait;
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struct amdtp_stream *sync_slave;
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};
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int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit,
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enum amdtp_stream_direction dir,
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enum cip_flags flags);
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void amdtp_stream_destroy(struct amdtp_stream *s);
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void amdtp_stream_set_parameters(struct amdtp_stream *s,
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unsigned int rate,
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unsigned int pcm_channels,
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unsigned int midi_ports);
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unsigned int amdtp_stream_get_max_payload(struct amdtp_stream *s);
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int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed);
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void amdtp_stream_update(struct amdtp_stream *s);
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void amdtp_stream_stop(struct amdtp_stream *s);
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int amdtp_stream_add_pcm_hw_constraints(struct amdtp_stream *s,
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struct snd_pcm_runtime *runtime);
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void amdtp_stream_set_pcm_format(struct amdtp_stream *s,
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snd_pcm_format_t format);
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void amdtp_stream_pcm_prepare(struct amdtp_stream *s);
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unsigned long amdtp_stream_pcm_pointer(struct amdtp_stream *s);
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void amdtp_stream_pcm_abort(struct amdtp_stream *s);
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extern const unsigned int amdtp_syt_intervals[CIP_SFC_COUNT];
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extern const unsigned int amdtp_rate_table[CIP_SFC_COUNT];
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/**
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* amdtp_stream_running - check stream is running or not
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* @s: the AMDTP stream
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*
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* If this function returns true, the stream is running.
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*/
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static inline bool amdtp_stream_running(struct amdtp_stream *s)
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{
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return !IS_ERR(s->context);
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}
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/**
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* amdtp_streaming_error - check for streaming error
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* @s: the AMDTP stream
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*
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* If this function returns true, the stream's packet queue has stopped due to
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* an asynchronous error.
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*/
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static inline bool amdtp_streaming_error(struct amdtp_stream *s)
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{
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return s->packet_index < 0;
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}
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/**
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* amdtp_stream_pcm_running - check PCM substream is running or not
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* @s: the AMDTP stream
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*
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* If this function returns true, PCM substream in the AMDTP stream is running.
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*/
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static inline bool amdtp_stream_pcm_running(struct amdtp_stream *s)
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{
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return !!s->pcm;
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}
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/**
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* amdtp_stream_pcm_trigger - start/stop playback from a PCM device
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* @s: the AMDTP stream
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* @pcm: the PCM device to be started, or %NULL to stop the current device
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*
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* Call this function on a running isochronous stream to enable the actual
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* transmission of PCM data. This function should be called from the PCM
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* device's .trigger callback.
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*/
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static inline void amdtp_stream_pcm_trigger(struct amdtp_stream *s,
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struct snd_pcm_substream *pcm)
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{
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ACCESS_ONCE(s->pcm) = pcm;
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}
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/**
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* amdtp_stream_midi_trigger - start/stop playback/capture with a MIDI device
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* @s: the AMDTP stream
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* @port: index of MIDI port
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* @midi: the MIDI device to be started, or %NULL to stop the current device
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*
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* Call this function on a running isochronous stream to enable the actual
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* transmission of MIDI data. This function should be called from the MIDI
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* device's .trigger callback.
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*/
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static inline void amdtp_stream_midi_trigger(struct amdtp_stream *s,
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unsigned int port,
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struct snd_rawmidi_substream *midi)
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{
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if (port < s->midi_ports)
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ACCESS_ONCE(s->midi[port]) = midi;
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}
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static inline bool cip_sfc_is_base_44100(enum cip_sfc sfc)
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{
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return sfc & 1;
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}
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static inline void amdtp_stream_set_sync(enum cip_flags sync_mode,
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struct amdtp_stream *master,
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struct amdtp_stream *slave)
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{
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if (sync_mode == CIP_SYNC_TO_DEVICE) {
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master->flags |= CIP_SYNC_TO_DEVICE;
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slave->flags |= CIP_SYNC_TO_DEVICE;
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master->sync_slave = slave;
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} else {
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master->flags &= ~CIP_SYNC_TO_DEVICE;
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slave->flags &= ~CIP_SYNC_TO_DEVICE;
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master->sync_slave = NULL;
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}
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slave->sync_slave = NULL;
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}
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/**
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* amdtp_stream_wait_callback - sleep till callbacked or timeout
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* @s: the AMDTP stream
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* @timeout: msec till timeout
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*
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* If this function return false, the AMDTP stream should be stopped.
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*/
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static inline bool amdtp_stream_wait_callback(struct amdtp_stream *s,
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unsigned int timeout)
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{
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return wait_event_timeout(s->callback_wait,
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s->callbacked == true,
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msecs_to_jiffies(timeout)) > 0;
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}
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#endif
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