1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * oxfw.h - a part of driver for OXFW970/971 based devices 4 * 5 * Copyright (c) Clemens Ladisch <clemens@ladisch.de> 6 */ 7 8 #include <linux/device.h> 9 #include <linux/firewire.h> 10 #include <linux/firewire-constants.h> 11 #include <linux/module.h> 12 #include <linux/mod_devicetable.h> 13 #include <linux/mutex.h> 14 #include <linux/slab.h> 15 #include <linux/compat.h> 16 #include <linux/sched/signal.h> 17 18 #include <sound/control.h> 19 #include <sound/core.h> 20 #include <sound/initval.h> 21 #include <sound/pcm.h> 22 #include <sound/pcm_params.h> 23 #include <sound/info.h> 24 #include <sound/rawmidi.h> 25 #include <sound/firewire.h> 26 #include <sound/hwdep.h> 27 28 #include "../lib.h" 29 #include "../fcp.h" 30 #include "../packets-buffer.h" 31 #include "../iso-resources.h" 32 #include "../amdtp-am824.h" 33 #include "../cmp.h" 34 35 enum snd_oxfw_quirk { 36 // Postpone transferring packets during handling asynchronous transaction. As a result, 37 // next isochronous packet includes more events than one packet can include. 38 SND_OXFW_QUIRK_JUMBO_PAYLOAD = 0x01, 39 }; 40 41 /* This is an arbitrary number for convinience. */ 42 #define SND_OXFW_STREAM_FORMAT_ENTRIES 10 43 struct snd_oxfw { 44 struct snd_card *card; 45 struct fw_unit *unit; 46 struct mutex mutex; 47 spinlock_t lock; 48 49 bool registered; 50 struct delayed_work dwork; 51 52 // The combination of snd_oxfw_quirk enumeration-constants. 53 unsigned int quirks; 54 bool wrong_dbs; 55 bool has_output; 56 bool has_input; 57 u8 *tx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES]; 58 u8 *rx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES]; 59 bool assumed; 60 struct cmp_connection out_conn; 61 struct cmp_connection in_conn; 62 struct amdtp_stream tx_stream; 63 struct amdtp_stream rx_stream; 64 unsigned int substreams_count; 65 66 unsigned int midi_input_ports; 67 unsigned int midi_output_ports; 68 69 int dev_lock_count; 70 bool dev_lock_changed; 71 wait_queue_head_t hwdep_wait; 72 73 const struct ieee1394_device_id *entry; 74 void *spec; 75 76 struct amdtp_domain domain; 77 }; 78 79 /* 80 * AV/C Stream Format Information Specification 1.1 Working Draft 81 * (Apr 2005, 1394TA) 82 */ 83 int avc_stream_set_format(struct fw_unit *unit, enum avc_general_plug_dir dir, 84 unsigned int pid, u8 *format, unsigned int len); 85 int avc_stream_get_format(struct fw_unit *unit, 86 enum avc_general_plug_dir dir, unsigned int pid, 87 u8 *buf, unsigned int *len, unsigned int eid); 88 static inline int 89 avc_stream_get_format_single(struct fw_unit *unit, 90 enum avc_general_plug_dir dir, unsigned int pid, 91 u8 *buf, unsigned int *len) 92 { 93 return avc_stream_get_format(unit, dir, pid, buf, len, 0xff); 94 } 95 static inline int 96 avc_stream_get_format_list(struct fw_unit *unit, 97 enum avc_general_plug_dir dir, unsigned int pid, 98 u8 *buf, unsigned int *len, 99 unsigned int eid) 100 { 101 return avc_stream_get_format(unit, dir, pid, buf, len, eid); 102 } 103 104 /* 105 * AV/C Digital Interface Command Set General Specification 4.2 106 * (Sep 2004, 1394TA) 107 */ 108 int avc_general_inquiry_sig_fmt(struct fw_unit *unit, unsigned int rate, 109 enum avc_general_plug_dir dir, 110 unsigned short pid); 111 112 int snd_oxfw_stream_init_duplex(struct snd_oxfw *oxfw); 113 int snd_oxfw_stream_reserve_duplex(struct snd_oxfw *oxfw, 114 struct amdtp_stream *stream, 115 unsigned int rate, unsigned int pcm_channels, 116 unsigned int frames_per_period, 117 unsigned int frames_per_buffer); 118 int snd_oxfw_stream_start_duplex(struct snd_oxfw *oxfw); 119 void snd_oxfw_stream_stop_duplex(struct snd_oxfw *oxfw); 120 void snd_oxfw_stream_destroy_duplex(struct snd_oxfw *oxfw); 121 void snd_oxfw_stream_update_duplex(struct snd_oxfw *oxfw); 122 123 struct snd_oxfw_stream_formation { 124 unsigned int rate; 125 unsigned int pcm; 126 unsigned int midi; 127 }; 128 int snd_oxfw_stream_parse_format(u8 *format, 129 struct snd_oxfw_stream_formation *formation); 130 int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw, 131 enum avc_general_plug_dir dir, 132 struct snd_oxfw_stream_formation *formation); 133 134 int snd_oxfw_stream_discover(struct snd_oxfw *oxfw); 135 136 void snd_oxfw_stream_lock_changed(struct snd_oxfw *oxfw); 137 int snd_oxfw_stream_lock_try(struct snd_oxfw *oxfw); 138 void snd_oxfw_stream_lock_release(struct snd_oxfw *oxfw); 139 140 int snd_oxfw_create_pcm(struct snd_oxfw *oxfw); 141 142 void snd_oxfw_proc_init(struct snd_oxfw *oxfw); 143 144 int snd_oxfw_create_midi(struct snd_oxfw *oxfw); 145 146 int snd_oxfw_create_hwdep(struct snd_oxfw *oxfw); 147 148 int snd_oxfw_add_spkr(struct snd_oxfw *oxfw, bool is_lacie); 149 int snd_oxfw_scs1x_add(struct snd_oxfw *oxfw); 150 void snd_oxfw_scs1x_update(struct snd_oxfw *oxfw); 151