diff options
author | 2016-04-11 10:41:07 +0300 | |
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committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/sound/firewire/amdtp.h | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/sound/firewire/amdtp.h')
-rw-r--r-- | kernel/sound/firewire/amdtp.h | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/kernel/sound/firewire/amdtp.h b/kernel/sound/firewire/amdtp.h deleted file mode 100644 index 25c905537..000000000 --- a/kernel/sound/firewire/amdtp.h +++ /dev/null @@ -1,294 +0,0 @@ -#ifndef SOUND_FIREWIRE_AMDTP_H_INCLUDED -#define SOUND_FIREWIRE_AMDTP_H_INCLUDED - -#include <linux/err.h> -#include <linux/interrupt.h> -#include <linux/mutex.h> -#include <sound/asound.h> -#include "packets-buffer.h" - -/** - * enum cip_flags - describes details of the streaming protocol - * @CIP_NONBLOCKING: In non-blocking mode, each packet contains - * sample_rate/8000 samples, with rounding up or down to adjust - * for clock skew and left-over fractional samples. This should - * be used if supported by the device. - * @CIP_BLOCKING: In blocking mode, each packet contains either zero or - * SYT_INTERVAL samples, with these two types alternating so that - * the overall sample rate comes out right. - * @CIP_SYNC_TO_DEVICE: In sync to device mode, time stamp in out packets is - * generated by in packets. Defaultly this driver generates timestamp. - * @CIP_EMPTY_WITH_TAG0: Only for in-stream. Empty in-packets have TAG0. - * @CIP_DBC_IS_END_EVENT: Only for in-stream. The value of dbc in an in-packet - * corresponds to the end of event in the packet. Out of IEC 61883. - * @CIP_WRONG_DBS: Only for in-stream. The value of dbs is wrong in in-packets. - * The value of data_block_quadlets is used instead of reported value. - * @CIP_SKIP_DBC_ZERO_CHECK: Only for in-stream. Packets with zero in dbc is - * skipped for detecting discontinuity. - * @CIP_SKIP_INIT_DBC_CHECK: Only for in-stream. The value of dbc in first - * packet is not continuous from an initial value. - * @CIP_EMPTY_HAS_WRONG_DBC: Only for in-stream. The value of dbc in empty - * packet is wrong but the others are correct. - */ -enum cip_flags { - CIP_NONBLOCKING = 0x00, - CIP_BLOCKING = 0x01, - CIP_SYNC_TO_DEVICE = 0x02, - CIP_EMPTY_WITH_TAG0 = 0x04, - CIP_DBC_IS_END_EVENT = 0x08, - CIP_WRONG_DBS = 0x10, - CIP_SKIP_DBC_ZERO_CHECK = 0x20, - CIP_SKIP_INIT_DBC_CHECK = 0x40, - CIP_EMPTY_HAS_WRONG_DBC = 0x80, -}; - -/** - * enum cip_sfc - supported Sampling Frequency Codes (SFCs) - * @CIP_SFC_32000: 32,000 data blocks - * @CIP_SFC_44100: 44,100 data blocks - * @CIP_SFC_48000: 48,000 data blocks - * @CIP_SFC_88200: 88,200 data blocks - * @CIP_SFC_96000: 96,000 data blocks - * @CIP_SFC_176400: 176,400 data blocks - * @CIP_SFC_192000: 192,000 data blocks - * @CIP_SFC_COUNT: the number of supported SFCs - * - * These values are used to show nominal Sampling Frequency Code in - * Format Dependent Field (FDF) of AMDTP packet header. In IEC 61883-6:2002, - * this code means the number of events per second. Actually the code - * represents the number of data blocks transferred per second in an AMDTP - * stream. - * - * In IEC 61883-6:2005, some extensions were added to support more types of - * data such as 'One Bit LInear Audio', therefore the meaning of SFC became - * different depending on the types. - * - * Currently our implementation is compatible with IEC 61883-6:2002. - */ -enum cip_sfc { - CIP_SFC_32000 = 0, - CIP_SFC_44100 = 1, - CIP_SFC_48000 = 2, - CIP_SFC_88200 = 3, - CIP_SFC_96000 = 4, - CIP_SFC_176400 = 5, - CIP_SFC_192000 = 6, - CIP_SFC_COUNT -}; - -#define AMDTP_IN_PCM_FORMAT_BITS SNDRV_PCM_FMTBIT_S32 - -#define AMDTP_OUT_PCM_FORMAT_BITS (SNDRV_PCM_FMTBIT_S16 | \ - SNDRV_PCM_FMTBIT_S32) - - -/* - * This module supports maximum 64 PCM channels for one PCM stream - * This is for our convenience. - */ -#define AMDTP_MAX_CHANNELS_FOR_PCM 64 - -/* - * AMDTP packet can include channels for MIDI conformant data. - * Each MIDI conformant data channel includes 8 MPX-MIDI data stream. - * Each MPX-MIDI data stream includes one data stream from/to MIDI ports. - * - * This module supports maximum 1 MIDI conformant data channels. - * Then this AMDTP packets can transfer maximum 8 MIDI data streams. - */ -#define AMDTP_MAX_CHANNELS_FOR_MIDI 1 - -struct fw_unit; -struct fw_iso_context; -struct snd_pcm_substream; -struct snd_pcm_runtime; -struct snd_rawmidi_substream; - -enum amdtp_stream_direction { - AMDTP_OUT_STREAM = 0, - AMDTP_IN_STREAM -}; - -struct amdtp_stream { - struct fw_unit *unit; - enum cip_flags flags; - enum amdtp_stream_direction direction; - struct fw_iso_context *context; - struct mutex mutex; - - enum cip_sfc sfc; - unsigned int data_block_quadlets; - unsigned int pcm_channels; - unsigned int midi_ports; - void (*transfer_samples)(struct amdtp_stream *s, - struct snd_pcm_substream *pcm, - __be32 *buffer, unsigned int frames); - u8 pcm_positions[AMDTP_MAX_CHANNELS_FOR_PCM]; - u8 midi_position; - - unsigned int syt_interval; - unsigned int transfer_delay; - unsigned int source_node_id_field; - struct iso_packets_buffer buffer; - - struct snd_pcm_substream *pcm; - struct tasklet_struct period_tasklet; - - int packet_index; - unsigned int data_block_counter; - - unsigned int data_block_state; - - unsigned int last_syt_offset; - unsigned int syt_offset_state; - - unsigned int pcm_buffer_pointer; - unsigned int pcm_period_pointer; - bool pointer_flush; - bool double_pcm_frames; - - struct snd_rawmidi_substream *midi[AMDTP_MAX_CHANNELS_FOR_MIDI * 8]; - int midi_fifo_limit; - int midi_fifo_used[AMDTP_MAX_CHANNELS_FOR_MIDI * 8]; - - /* quirk: fixed interval of dbc between previos/current packets. */ - unsigned int tx_dbc_interval; - /* quirk: indicate the value of dbc field in a first packet. */ - unsigned int tx_first_dbc; - - bool callbacked; - wait_queue_head_t callback_wait; - struct amdtp_stream *sync_slave; -}; - -int amdtp_stream_init(struct amdtp_stream *s, struct fw_unit *unit, - enum amdtp_stream_direction dir, - enum cip_flags flags); -void amdtp_stream_destroy(struct amdtp_stream *s); - -void amdtp_stream_set_parameters(struct amdtp_stream *s, - unsigned int rate, - unsigned int pcm_channels, - unsigned int midi_ports); -unsigned int amdtp_stream_get_max_payload(struct amdtp_stream *s); - -int amdtp_stream_start(struct amdtp_stream *s, int channel, int speed); -void amdtp_stream_update(struct amdtp_stream *s); -void amdtp_stream_stop(struct amdtp_stream *s); - -int amdtp_stream_add_pcm_hw_constraints(struct amdtp_stream *s, - struct snd_pcm_runtime *runtime); -void amdtp_stream_set_pcm_format(struct amdtp_stream *s, - snd_pcm_format_t format); -void amdtp_stream_pcm_prepare(struct amdtp_stream *s); -unsigned long amdtp_stream_pcm_pointer(struct amdtp_stream *s); -void amdtp_stream_pcm_abort(struct amdtp_stream *s); - -extern const unsigned int amdtp_syt_intervals[CIP_SFC_COUNT]; -extern const unsigned int amdtp_rate_table[CIP_SFC_COUNT]; - -/** - * amdtp_stream_running - check stream is running or not - * @s: the AMDTP stream - * - * If this function returns true, the stream is running. - */ -static inline bool amdtp_stream_running(struct amdtp_stream *s) -{ - return !IS_ERR(s->context); -} - -/** - * amdtp_streaming_error - check for streaming error - * @s: the AMDTP stream - * - * If this function returns true, the stream's packet queue has stopped due to - * an asynchronous error. - */ -static inline bool amdtp_streaming_error(struct amdtp_stream *s) -{ - return s->packet_index < 0; -} - -/** - * amdtp_stream_pcm_running - check PCM substream is running or not - * @s: the AMDTP stream - * - * If this function returns true, PCM substream in the AMDTP stream is running. - */ -static inline bool amdtp_stream_pcm_running(struct amdtp_stream *s) -{ - return !!s->pcm; -} - -/** - * amdtp_stream_pcm_trigger - start/stop playback from a PCM device - * @s: the AMDTP stream - * @pcm: the PCM device to be started, or %NULL to stop the current device - * - * Call this function on a running isochronous stream to enable the actual - * transmission of PCM data. This function should be called from the PCM - * device's .trigger callback. - */ -static inline void amdtp_stream_pcm_trigger(struct amdtp_stream *s, - struct snd_pcm_substream *pcm) -{ - ACCESS_ONCE(s->pcm) = pcm; -} - -/** - * amdtp_stream_midi_trigger - start/stop playback/capture with a MIDI device - * @s: the AMDTP stream - * @port: index of MIDI port - * @midi: the MIDI device to be started, or %NULL to stop the current device - * - * Call this function on a running isochronous stream to enable the actual - * transmission of MIDI data. This function should be called from the MIDI - * device's .trigger callback. - */ -static inline void amdtp_stream_midi_trigger(struct amdtp_stream *s, - unsigned int port, - struct snd_rawmidi_substream *midi) -{ - if (port < s->midi_ports) - ACCESS_ONCE(s->midi[port]) = midi; -} - -static inline bool cip_sfc_is_base_44100(enum cip_sfc sfc) -{ - return sfc & 1; -} - -static inline void amdtp_stream_set_sync(enum cip_flags sync_mode, - struct amdtp_stream *master, - struct amdtp_stream *slave) -{ - if (sync_mode == CIP_SYNC_TO_DEVICE) { - master->flags |= CIP_SYNC_TO_DEVICE; - slave->flags |= CIP_SYNC_TO_DEVICE; - master->sync_slave = slave; - } else { - master->flags &= ~CIP_SYNC_TO_DEVICE; - slave->flags &= ~CIP_SYNC_TO_DEVICE; - master->sync_slave = NULL; - } - - slave->sync_slave = NULL; -} - -/** - * amdtp_stream_wait_callback - sleep till callbacked or timeout - * @s: the AMDTP stream - * @timeout: msec till timeout - * - * If this function return false, the AMDTP stream should be stopped. - */ -static inline bool amdtp_stream_wait_callback(struct amdtp_stream *s, - unsigned int timeout) -{ - return wait_event_timeout(s->callback_wait, - s->callbacked == true, - msecs_to_jiffies(timeout)) > 0; -} - -#endif |