1e2786ca6STakashi Sakamoto /* 2e2786ca6STakashi Sakamoto * oxfw_stream.c - a part of driver for OXFW970/971 based devices 3e2786ca6STakashi Sakamoto * 4e2786ca6STakashi Sakamoto * Copyright (c) 2014 Takashi Sakamoto 5e2786ca6STakashi Sakamoto * 6e2786ca6STakashi Sakamoto * Licensed under the terms of the GNU General Public License, version 2. 7e2786ca6STakashi Sakamoto */ 8e2786ca6STakashi Sakamoto 9e2786ca6STakashi Sakamoto #include "oxfw.h" 10f3699e2cSTakashi Sakamoto #include <linux/delay.h> 11e2786ca6STakashi Sakamoto 125cd1d3f4STakashi Sakamoto #define AVC_GENERIC_FRAME_MAXIMUM_BYTES 512 13f3699e2cSTakashi Sakamoto #define CALLBACK_TIMEOUT 200 145cd1d3f4STakashi Sakamoto 155cd1d3f4STakashi Sakamoto /* 165cd1d3f4STakashi Sakamoto * According to datasheet of Oxford Semiconductor: 175cd1d3f4STakashi Sakamoto * OXFW970: 32.0/44.1/48.0/96.0 Khz, 8 audio channels I/O 185cd1d3f4STakashi Sakamoto * OXFW971: 32.0/44.1/48.0/88.2/96.0/192.0 kHz, 16 audio channels I/O, MIDI I/O 195cd1d3f4STakashi Sakamoto */ 205cd1d3f4STakashi Sakamoto static const unsigned int oxfw_rate_table[] = { 215cd1d3f4STakashi Sakamoto [0] = 32000, 225cd1d3f4STakashi Sakamoto [1] = 44100, 235cd1d3f4STakashi Sakamoto [2] = 48000, 245cd1d3f4STakashi Sakamoto [3] = 88200, 255cd1d3f4STakashi Sakamoto [4] = 96000, 265cd1d3f4STakashi Sakamoto [5] = 192000, 275cd1d3f4STakashi Sakamoto }; 285cd1d3f4STakashi Sakamoto 295cd1d3f4STakashi Sakamoto /* 305cd1d3f4STakashi Sakamoto * See Table 5.7 – Sampling frequency for Multi-bit Audio 315cd1d3f4STakashi Sakamoto * in AV/C Stream Format Information Specification 1.1 (Apr 2005, 1394TA) 325cd1d3f4STakashi Sakamoto */ 335cd1d3f4STakashi Sakamoto static const unsigned int avc_stream_rate_table[] = { 345cd1d3f4STakashi Sakamoto [0] = 0x02, 355cd1d3f4STakashi Sakamoto [1] = 0x03, 365cd1d3f4STakashi Sakamoto [2] = 0x04, 375cd1d3f4STakashi Sakamoto [3] = 0x0a, 385cd1d3f4STakashi Sakamoto [4] = 0x05, 395cd1d3f4STakashi Sakamoto [5] = 0x07, 405cd1d3f4STakashi Sakamoto }; 415cd1d3f4STakashi Sakamoto 42b0ac0009STakashi Sakamoto static int set_rate(struct snd_oxfw *oxfw, unsigned int rate) 43b0ac0009STakashi Sakamoto { 44b0ac0009STakashi Sakamoto int err; 45b0ac0009STakashi Sakamoto 46b0ac0009STakashi Sakamoto err = avc_general_set_sig_fmt(oxfw->unit, rate, 47b0ac0009STakashi Sakamoto AVC_GENERAL_PLUG_DIR_IN, 0); 48b0ac0009STakashi Sakamoto if (err < 0) 49b0ac0009STakashi Sakamoto goto end; 50b0ac0009STakashi Sakamoto 51b0ac0009STakashi Sakamoto if (oxfw->has_output) 52b0ac0009STakashi Sakamoto err = avc_general_set_sig_fmt(oxfw->unit, rate, 53b0ac0009STakashi Sakamoto AVC_GENERAL_PLUG_DIR_OUT, 0); 54b0ac0009STakashi Sakamoto end: 55b0ac0009STakashi Sakamoto return err; 56b0ac0009STakashi Sakamoto } 57b0ac0009STakashi Sakamoto 58f3699e2cSTakashi Sakamoto static int set_stream_format(struct snd_oxfw *oxfw, struct amdtp_stream *s, 59f3699e2cSTakashi Sakamoto unsigned int rate, unsigned int pcm_channels) 60f3699e2cSTakashi Sakamoto { 61f3699e2cSTakashi Sakamoto u8 **formats; 62f3699e2cSTakashi Sakamoto struct snd_oxfw_stream_formation formation; 63f3699e2cSTakashi Sakamoto enum avc_general_plug_dir dir; 645580ba7bSDan Carpenter unsigned int len; 655580ba7bSDan Carpenter int i, err; 66f3699e2cSTakashi Sakamoto 67b0ac0009STakashi Sakamoto if (s == &oxfw->tx_stream) { 68b0ac0009STakashi Sakamoto formats = oxfw->tx_stream_formats; 69b0ac0009STakashi Sakamoto dir = AVC_GENERAL_PLUG_DIR_OUT; 70b0ac0009STakashi Sakamoto } else { 71f3699e2cSTakashi Sakamoto formats = oxfw->rx_stream_formats; 72f3699e2cSTakashi Sakamoto dir = AVC_GENERAL_PLUG_DIR_IN; 73b0ac0009STakashi Sakamoto } 74f3699e2cSTakashi Sakamoto 75f3699e2cSTakashi Sakamoto /* Seek stream format for requirements. */ 76f3699e2cSTakashi Sakamoto for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { 77f3699e2cSTakashi Sakamoto err = snd_oxfw_stream_parse_format(formats[i], &formation); 78f3699e2cSTakashi Sakamoto if (err < 0) 79f3699e2cSTakashi Sakamoto return err; 80f3699e2cSTakashi Sakamoto 81f3699e2cSTakashi Sakamoto if ((formation.rate == rate) && (formation.pcm == pcm_channels)) 82f3699e2cSTakashi Sakamoto break; 83f3699e2cSTakashi Sakamoto } 84f3699e2cSTakashi Sakamoto if (i == SND_OXFW_STREAM_FORMAT_ENTRIES) 85f3699e2cSTakashi Sakamoto return -EINVAL; 86f3699e2cSTakashi Sakamoto 87f3699e2cSTakashi Sakamoto /* If assumed, just change rate. */ 88f3699e2cSTakashi Sakamoto if (oxfw->assumed) 89b0ac0009STakashi Sakamoto return set_rate(oxfw, rate); 90f3699e2cSTakashi Sakamoto 91f3699e2cSTakashi Sakamoto /* Calculate format length. */ 92f3699e2cSTakashi Sakamoto len = 5 + formats[i][4] * 2; 93f3699e2cSTakashi Sakamoto 94f3699e2cSTakashi Sakamoto err = avc_stream_set_format(oxfw->unit, dir, 0, formats[i], len); 95f3699e2cSTakashi Sakamoto if (err < 0) 96f3699e2cSTakashi Sakamoto return err; 97f3699e2cSTakashi Sakamoto 98f3699e2cSTakashi Sakamoto /* Some requests just after changing format causes freezing. */ 99f3699e2cSTakashi Sakamoto msleep(100); 100f3699e2cSTakashi Sakamoto 101f3699e2cSTakashi Sakamoto return 0; 102f3699e2cSTakashi Sakamoto } 103f3699e2cSTakashi Sakamoto 104521b2e11STakashi Sakamoto static int start_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream) 105e2786ca6STakashi Sakamoto { 106f3699e2cSTakashi Sakamoto u8 **formats; 107521b2e11STakashi Sakamoto enum avc_general_plug_dir dir; 108f3699e2cSTakashi Sakamoto struct cmp_connection *conn; 109f3699e2cSTakashi Sakamoto struct snd_oxfw_stream_formation formation; 110521b2e11STakashi Sakamoto int i; 111f3699e2cSTakashi Sakamoto int err; 112f3699e2cSTakashi Sakamoto 113b0ac0009STakashi Sakamoto if (stream == &oxfw->rx_stream) { 114521b2e11STakashi Sakamoto dir = AVC_GENERAL_PLUG_DIR_IN; 115f3699e2cSTakashi Sakamoto formats = oxfw->rx_stream_formats; 116f3699e2cSTakashi Sakamoto conn = &oxfw->in_conn; 117b0ac0009STakashi Sakamoto } else { 118521b2e11STakashi Sakamoto dir = AVC_GENERAL_PLUG_DIR_OUT; 119b0ac0009STakashi Sakamoto formats = oxfw->tx_stream_formats; 120b0ac0009STakashi Sakamoto conn = &oxfw->out_conn; 121b0ac0009STakashi Sakamoto } 122f3699e2cSTakashi Sakamoto 123521b2e11STakashi Sakamoto err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation); 124521b2e11STakashi Sakamoto if (err < 0) 125521b2e11STakashi Sakamoto return err; 126521b2e11STakashi Sakamoto 127f3699e2cSTakashi Sakamoto for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { 128521b2e11STakashi Sakamoto struct snd_oxfw_stream_formation fmt; 129521b2e11STakashi Sakamoto 130f3699e2cSTakashi Sakamoto if (formats[i] == NULL) 131f3699e2cSTakashi Sakamoto break; 132f3699e2cSTakashi Sakamoto 133521b2e11STakashi Sakamoto err = snd_oxfw_stream_parse_format(formats[i], &fmt); 134f3699e2cSTakashi Sakamoto if (err < 0) 135521b2e11STakashi Sakamoto return err; 136521b2e11STakashi Sakamoto if (fmt.rate == formation.rate && fmt.pcm == formation.pcm && 137521b2e11STakashi Sakamoto fmt.midi == formation.midi) 138f3699e2cSTakashi Sakamoto break; 139f3699e2cSTakashi Sakamoto } 140521b2e11STakashi Sakamoto if (i == SND_OXFW_STREAM_FORMAT_ENTRIES) 141521b2e11STakashi Sakamoto return -EINVAL; 142f3699e2cSTakashi Sakamoto 143521b2e11STakashi Sakamoto // The stream should have one pcm channels at least. 144521b2e11STakashi Sakamoto if (formation.pcm == 0) 145521b2e11STakashi Sakamoto return -EINVAL; 146f3699e2cSTakashi Sakamoto 147521b2e11STakashi Sakamoto err = amdtp_am824_set_parameters(stream, formation.rate, formation.pcm, 148521b2e11STakashi Sakamoto formation.midi * 8, false); 149547e631cSTakashi Sakamoto if (err < 0) 150e34244ddSTakashi Sakamoto return err; 151f3699e2cSTakashi Sakamoto 152f3699e2cSTakashi Sakamoto err = cmp_connection_establish(conn, 153f3699e2cSTakashi Sakamoto amdtp_stream_get_max_payload(stream)); 154f3699e2cSTakashi Sakamoto if (err < 0) 155e34244ddSTakashi Sakamoto return err; 156f3699e2cSTakashi Sakamoto 157e34244ddSTakashi Sakamoto err = amdtp_stream_start(stream, conn->resources.channel, conn->speed); 158f3699e2cSTakashi Sakamoto if (err < 0) { 159f3699e2cSTakashi Sakamoto cmp_connection_break(conn); 160e34244ddSTakashi Sakamoto return err; 161f3699e2cSTakashi Sakamoto } 162f3699e2cSTakashi Sakamoto 163e34244ddSTakashi Sakamoto // Wait first packet. 164f2b14c0bSTakashi Sakamoto if (!amdtp_stream_wait_callback(stream, CALLBACK_TIMEOUT)) { 165e34244ddSTakashi Sakamoto amdtp_stream_stop(stream); 166e34244ddSTakashi Sakamoto cmp_connection_break(conn); 167e34244ddSTakashi Sakamoto return -ETIMEDOUT; 168f2b14c0bSTakashi Sakamoto } 169e34244ddSTakashi Sakamoto 170e34244ddSTakashi Sakamoto return 0; 171f3699e2cSTakashi Sakamoto } 172f3699e2cSTakashi Sakamoto 173b0ac0009STakashi Sakamoto static int check_connection_used_by_others(struct snd_oxfw *oxfw, 174b0ac0009STakashi Sakamoto struct amdtp_stream *stream) 175f3699e2cSTakashi Sakamoto { 176b0ac0009STakashi Sakamoto struct cmp_connection *conn; 177b0ac0009STakashi Sakamoto bool used; 178b0ac0009STakashi Sakamoto int err; 179b0ac0009STakashi Sakamoto 180b0ac0009STakashi Sakamoto if (stream == &oxfw->tx_stream) 181b0ac0009STakashi Sakamoto conn = &oxfw->out_conn; 182b0ac0009STakashi Sakamoto else 183b0ac0009STakashi Sakamoto conn = &oxfw->in_conn; 184b0ac0009STakashi Sakamoto 185b0ac0009STakashi Sakamoto err = cmp_connection_check_used(conn, &used); 186b0ac0009STakashi Sakamoto if ((err >= 0) && used && !amdtp_stream_running(stream)) { 187b0ac0009STakashi Sakamoto dev_err(&oxfw->unit->device, 188b0ac0009STakashi Sakamoto "Connection established by others: %cPCR[%d]\n", 189b0ac0009STakashi Sakamoto (conn->direction == CMP_OUTPUT) ? 'o' : 'i', 190b0ac0009STakashi Sakamoto conn->pcr_index); 191b0ac0009STakashi Sakamoto err = -EBUSY; 192b0ac0009STakashi Sakamoto } 193b0ac0009STakashi Sakamoto 194b0ac0009STakashi Sakamoto return err; 195b0ac0009STakashi Sakamoto } 196b0ac0009STakashi Sakamoto 197779f0dbaSTakashi Sakamoto static int init_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream) 198b0ac0009STakashi Sakamoto { 199b0ac0009STakashi Sakamoto struct cmp_connection *conn; 200b0ac0009STakashi Sakamoto enum cmp_direction c_dir; 201b0ac0009STakashi Sakamoto enum amdtp_stream_direction s_dir; 202b0ac0009STakashi Sakamoto int err; 203b0ac0009STakashi Sakamoto 204b0ac0009STakashi Sakamoto if (stream == &oxfw->tx_stream) { 205b0ac0009STakashi Sakamoto conn = &oxfw->out_conn; 206b0ac0009STakashi Sakamoto c_dir = CMP_OUTPUT; 207b0ac0009STakashi Sakamoto s_dir = AMDTP_IN_STREAM; 208b0ac0009STakashi Sakamoto } else { 209b0ac0009STakashi Sakamoto conn = &oxfw->in_conn; 210b0ac0009STakashi Sakamoto c_dir = CMP_INPUT; 211b0ac0009STakashi Sakamoto s_dir = AMDTP_OUT_STREAM; 212b0ac0009STakashi Sakamoto } 213b0ac0009STakashi Sakamoto 214b0ac0009STakashi Sakamoto err = cmp_connection_init(conn, oxfw->unit, c_dir, 0); 215b0ac0009STakashi Sakamoto if (err < 0) 216779f0dbaSTakashi Sakamoto return err; 217b0ac0009STakashi Sakamoto 2185955815eSTakashi Sakamoto err = amdtp_am824_init(stream, oxfw->unit, s_dir, CIP_NONBLOCKING); 219b0ac0009STakashi Sakamoto if (err < 0) { 220b0ac0009STakashi Sakamoto cmp_connection_destroy(conn); 221779f0dbaSTakashi Sakamoto return err; 222b0ac0009STakashi Sakamoto } 223b0ac0009STakashi Sakamoto 224a2064710STakashi Sakamoto /* 225a2064710STakashi Sakamoto * OXFW starts to transmit packets with non-zero dbc. 226a2064710STakashi Sakamoto * OXFW postpone transferring packets till handling any asynchronous 227a2064710STakashi Sakamoto * packets. As a result, next isochronous packet includes more data 228a2064710STakashi Sakamoto * blocks than IEC 61883-6 defines. 229a2064710STakashi Sakamoto */ 23013f3a46dSTakashi Sakamoto if (stream == &oxfw->tx_stream) { 23162f00e40STakashi Sakamoto oxfw->tx_stream.flags |= CIP_JUMBO_PAYLOAD; 23213f3a46dSTakashi Sakamoto if (oxfw->wrong_dbs) 23313f3a46dSTakashi Sakamoto oxfw->tx_stream.flags |= CIP_WRONG_DBS; 23413f3a46dSTakashi Sakamoto } 235779f0dbaSTakashi Sakamoto 236779f0dbaSTakashi Sakamoto return 0; 237b0ac0009STakashi Sakamoto } 238b0ac0009STakashi Sakamoto 239779f0dbaSTakashi Sakamoto int snd_oxfw_stream_start_duplex(struct snd_oxfw *oxfw, 240b0ac0009STakashi Sakamoto struct amdtp_stream *stream, 241b0ac0009STakashi Sakamoto unsigned int rate, unsigned int pcm_channels) 242b0ac0009STakashi Sakamoto { 243f3699e2cSTakashi Sakamoto struct snd_oxfw_stream_formation formation; 244b0ac0009STakashi Sakamoto enum avc_general_plug_dir dir; 245e2786ca6STakashi Sakamoto int err = 0; 246e2786ca6STakashi Sakamoto 24720358d44STakashi Sakamoto if (oxfw->capture_substreams == 0 && oxfw->playback_substreams == 0) 24820358d44STakashi Sakamoto return -EIO; 249e2786ca6STakashi Sakamoto 25020358d44STakashi Sakamoto // Considering JACK/FFADO streaming: 25120358d44STakashi Sakamoto // TODO: This can be removed hwdep functionality becomes popular. 25220358d44STakashi Sakamoto err = check_connection_used_by_others(oxfw, &oxfw->rx_stream); 25320358d44STakashi Sakamoto if (err < 0) 25420358d44STakashi Sakamoto return err; 25520358d44STakashi Sakamoto if (oxfw->has_output) { 25620358d44STakashi Sakamoto err = check_connection_used_by_others(oxfw, &oxfw->tx_stream); 25720358d44STakashi Sakamoto if (err < 0) 25820358d44STakashi Sakamoto return err; 259b0ac0009STakashi Sakamoto } 260b0ac0009STakashi Sakamoto 26120358d44STakashi Sakamoto if (stream == &oxfw->tx_stream) 26220358d44STakashi Sakamoto dir = AVC_GENERAL_PLUG_DIR_OUT; 26320358d44STakashi Sakamoto else 26420358d44STakashi Sakamoto dir = AVC_GENERAL_PLUG_DIR_IN; 265b0ac0009STakashi Sakamoto 266b0ac0009STakashi Sakamoto err = snd_oxfw_stream_get_current_formation(oxfw, dir, &formation); 267e2786ca6STakashi Sakamoto if (err < 0) 26820358d44STakashi Sakamoto return err; 26905588d34STakashi Sakamoto if (rate == 0) 27005588d34STakashi Sakamoto rate = formation.rate; 27105588d34STakashi Sakamoto if (pcm_channels == 0) 27205588d34STakashi Sakamoto pcm_channels = formation.pcm; 273e2786ca6STakashi Sakamoto 274da2af86dSTakashi Sakamoto if (formation.rate != rate || formation.pcm != pcm_channels || 27520358d44STakashi Sakamoto amdtp_streaming_error(&oxfw->rx_stream) || 27620358d44STakashi Sakamoto amdtp_streaming_error(&oxfw->tx_stream)) { 277e34244ddSTakashi Sakamoto amdtp_stream_stop(&oxfw->rx_stream); 278e34244ddSTakashi Sakamoto cmp_connection_break(&oxfw->in_conn); 279e34244ddSTakashi Sakamoto 280e34244ddSTakashi Sakamoto if (oxfw->has_output) { 281e34244ddSTakashi Sakamoto amdtp_stream_stop(&oxfw->tx_stream); 282e34244ddSTakashi Sakamoto cmp_connection_break(&oxfw->out_conn); 283e34244ddSTakashi Sakamoto } 284f3699e2cSTakashi Sakamoto 285b0ac0009STakashi Sakamoto err = set_stream_format(oxfw, stream, rate, pcm_channels); 286f3699e2cSTakashi Sakamoto if (err < 0) { 287f3699e2cSTakashi Sakamoto dev_err(&oxfw->unit->device, 288f3699e2cSTakashi Sakamoto "fail to set stream format: %d\n", err); 28920358d44STakashi Sakamoto return err; 29020358d44STakashi Sakamoto } 291f3699e2cSTakashi Sakamoto } 292b0ac0009STakashi Sakamoto 29320358d44STakashi Sakamoto if (!amdtp_stream_running(&oxfw->rx_stream)) { 29420358d44STakashi Sakamoto err = start_stream(oxfw, &oxfw->rx_stream); 295b0ac0009STakashi Sakamoto if (err < 0) { 296b0ac0009STakashi Sakamoto dev_err(&oxfw->unit->device, 29720358d44STakashi Sakamoto "fail to start rx stream: %d\n", err); 29820358d44STakashi Sakamoto goto error; 29920358d44STakashi Sakamoto } 30020358d44STakashi Sakamoto } 30120358d44STakashi Sakamoto 30220358d44STakashi Sakamoto if (oxfw->has_output) { 30320358d44STakashi Sakamoto if (!amdtp_stream_running(&oxfw->tx_stream)) { 30420358d44STakashi Sakamoto err = start_stream(oxfw, &oxfw->tx_stream); 30520358d44STakashi Sakamoto if (err < 0) { 30620358d44STakashi Sakamoto dev_err(&oxfw->unit->device, 30720358d44STakashi Sakamoto "fail to start tx stream: %d\n", err); 30820358d44STakashi Sakamoto goto error; 309b0ac0009STakashi Sakamoto } 310b0ac0009STakashi Sakamoto } 311f3699e2cSTakashi Sakamoto } 312f3699e2cSTakashi Sakamoto 31320358d44STakashi Sakamoto return 0; 31420358d44STakashi Sakamoto error: 315e34244ddSTakashi Sakamoto amdtp_stream_stop(&oxfw->rx_stream); 31620358d44STakashi Sakamoto cmp_connection_break(&oxfw->in_conn); 31720358d44STakashi Sakamoto if (oxfw->has_output) { 318e34244ddSTakashi Sakamoto amdtp_stream_stop(&oxfw->tx_stream); 31920358d44STakashi Sakamoto cmp_connection_break(&oxfw->out_conn); 320b0ac0009STakashi Sakamoto } 321e2786ca6STakashi Sakamoto return err; 322e2786ca6STakashi Sakamoto } 323e2786ca6STakashi Sakamoto 324779f0dbaSTakashi Sakamoto void snd_oxfw_stream_stop_duplex(struct snd_oxfw *oxfw) 325e2786ca6STakashi Sakamoto { 32620358d44STakashi Sakamoto if (oxfw->capture_substreams == 0 && oxfw->playback_substreams == 0) { 327e34244ddSTakashi Sakamoto amdtp_stream_stop(&oxfw->rx_stream); 328e34244ddSTakashi Sakamoto cmp_connection_break(&oxfw->in_conn); 329b0ac0009STakashi Sakamoto 330e34244ddSTakashi Sakamoto if (oxfw->has_output) { 331e34244ddSTakashi Sakamoto amdtp_stream_stop(&oxfw->tx_stream); 332e34244ddSTakashi Sakamoto cmp_connection_break(&oxfw->out_conn); 333e34244ddSTakashi Sakamoto } 33420358d44STakashi Sakamoto } 335e2786ca6STakashi Sakamoto } 336e2786ca6STakashi Sakamoto 337779f0dbaSTakashi Sakamoto static void destroy_stream(struct snd_oxfw *oxfw, struct amdtp_stream *stream) 338e2786ca6STakashi Sakamoto { 339b0ac0009STakashi Sakamoto struct cmp_connection *conn; 340e2786ca6STakashi Sakamoto 341b0ac0009STakashi Sakamoto if (stream == &oxfw->tx_stream) 342b0ac0009STakashi Sakamoto conn = &oxfw->out_conn; 343e2786ca6STakashi Sakamoto else 344b0ac0009STakashi Sakamoto conn = &oxfw->in_conn; 345b0ac0009STakashi Sakamoto 346b0ac0009STakashi Sakamoto amdtp_stream_destroy(stream); 347b0ac0009STakashi Sakamoto cmp_connection_destroy(conn); 348b0ac0009STakashi Sakamoto } 349b0ac0009STakashi Sakamoto 350779f0dbaSTakashi Sakamoto int snd_oxfw_stream_init_duplex(struct snd_oxfw *oxfw) 351779f0dbaSTakashi Sakamoto { 352779f0dbaSTakashi Sakamoto int err; 353779f0dbaSTakashi Sakamoto 354779f0dbaSTakashi Sakamoto err = init_stream(oxfw, &oxfw->rx_stream); 355779f0dbaSTakashi Sakamoto if (err < 0) 356779f0dbaSTakashi Sakamoto return err; 357779f0dbaSTakashi Sakamoto 358779f0dbaSTakashi Sakamoto if (oxfw->has_output) { 359779f0dbaSTakashi Sakamoto err = init_stream(oxfw, &oxfw->tx_stream); 360779f0dbaSTakashi Sakamoto if (err < 0) { 361779f0dbaSTakashi Sakamoto destroy_stream(oxfw, &oxfw->rx_stream); 362779f0dbaSTakashi Sakamoto return err; 363779f0dbaSTakashi Sakamoto } 364779f0dbaSTakashi Sakamoto } 365779f0dbaSTakashi Sakamoto 366779f0dbaSTakashi Sakamoto return 0; 367779f0dbaSTakashi Sakamoto } 368779f0dbaSTakashi Sakamoto 369779f0dbaSTakashi Sakamoto // This function should be called before starting the stream or after stopping 370779f0dbaSTakashi Sakamoto // the streams. 371779f0dbaSTakashi Sakamoto void snd_oxfw_stream_destroy_duplex(struct snd_oxfw *oxfw) 372779f0dbaSTakashi Sakamoto { 373779f0dbaSTakashi Sakamoto destroy_stream(oxfw, &oxfw->rx_stream); 374779f0dbaSTakashi Sakamoto 375779f0dbaSTakashi Sakamoto if (oxfw->has_output) 376779f0dbaSTakashi Sakamoto destroy_stream(oxfw, &oxfw->tx_stream); 377779f0dbaSTakashi Sakamoto } 378779f0dbaSTakashi Sakamoto 379779f0dbaSTakashi Sakamoto void snd_oxfw_stream_update_duplex(struct snd_oxfw *oxfw) 380b0ac0009STakashi Sakamoto { 381e34244ddSTakashi Sakamoto amdtp_stream_stop(&oxfw->rx_stream); 382e34244ddSTakashi Sakamoto cmp_connection_break(&oxfw->in_conn); 383b0ac0009STakashi Sakamoto 384e34244ddSTakashi Sakamoto amdtp_stream_pcm_abort(&oxfw->rx_stream); 385e34244ddSTakashi Sakamoto 386e34244ddSTakashi Sakamoto if (oxfw->has_output) { 387e34244ddSTakashi Sakamoto amdtp_stream_stop(&oxfw->tx_stream); 388e34244ddSTakashi Sakamoto cmp_connection_break(&oxfw->out_conn); 389e34244ddSTakashi Sakamoto 390e34244ddSTakashi Sakamoto amdtp_stream_pcm_abort(&oxfw->tx_stream); 391e34244ddSTakashi Sakamoto } 392e2786ca6STakashi Sakamoto } 3935cd1d3f4STakashi Sakamoto 3943c96101fSTakashi Sakamoto int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw, 3953c96101fSTakashi Sakamoto enum avc_general_plug_dir dir, 3963c96101fSTakashi Sakamoto struct snd_oxfw_stream_formation *formation) 3973c96101fSTakashi Sakamoto { 3983c96101fSTakashi Sakamoto u8 *format; 3993c96101fSTakashi Sakamoto unsigned int len; 4003c96101fSTakashi Sakamoto int err; 4013c96101fSTakashi Sakamoto 4023c96101fSTakashi Sakamoto len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; 4033c96101fSTakashi Sakamoto format = kmalloc(len, GFP_KERNEL); 4043c96101fSTakashi Sakamoto if (format == NULL) 4053c96101fSTakashi Sakamoto return -ENOMEM; 4063c96101fSTakashi Sakamoto 4073c96101fSTakashi Sakamoto err = avc_stream_get_format_single(oxfw->unit, dir, 0, format, &len); 4083c96101fSTakashi Sakamoto if (err < 0) 4093c96101fSTakashi Sakamoto goto end; 4103c96101fSTakashi Sakamoto if (len < 3) { 4113c96101fSTakashi Sakamoto err = -EIO; 4123c96101fSTakashi Sakamoto goto end; 4133c96101fSTakashi Sakamoto } 4143c96101fSTakashi Sakamoto 4153c96101fSTakashi Sakamoto err = snd_oxfw_stream_parse_format(format, formation); 4163c96101fSTakashi Sakamoto end: 4173c96101fSTakashi Sakamoto kfree(format); 4183c96101fSTakashi Sakamoto return err; 4193c96101fSTakashi Sakamoto } 4203c96101fSTakashi Sakamoto 4215cd1d3f4STakashi Sakamoto /* 4225cd1d3f4STakashi Sakamoto * See Table 6.16 - AM824 Stream Format 4235cd1d3f4STakashi Sakamoto * Figure 6.19 - format_information field for AM824 Compound 4245cd1d3f4STakashi Sakamoto * in AV/C Stream Format Information Specification 1.1 (Apr 2005, 1394TA) 4255cd1d3f4STakashi Sakamoto * Also 'Clause 12 AM824 sequence adaption layers' in IEC 61883-6:2005 4265cd1d3f4STakashi Sakamoto */ 4275cd1d3f4STakashi Sakamoto int snd_oxfw_stream_parse_format(u8 *format, 4285cd1d3f4STakashi Sakamoto struct snd_oxfw_stream_formation *formation) 4295cd1d3f4STakashi Sakamoto { 4305cd1d3f4STakashi Sakamoto unsigned int i, e, channels, type; 4315cd1d3f4STakashi Sakamoto 4325cd1d3f4STakashi Sakamoto memset(formation, 0, sizeof(struct snd_oxfw_stream_formation)); 4335cd1d3f4STakashi Sakamoto 4345cd1d3f4STakashi Sakamoto /* 4355cd1d3f4STakashi Sakamoto * this module can support a hierarchy combination that: 4365cd1d3f4STakashi Sakamoto * Root: Audio and Music (0x90) 4375cd1d3f4STakashi Sakamoto * Level 1: AM824 Compound (0x40) 4385cd1d3f4STakashi Sakamoto */ 4395cd1d3f4STakashi Sakamoto if ((format[0] != 0x90) || (format[1] != 0x40)) 4405cd1d3f4STakashi Sakamoto return -ENOSYS; 4415cd1d3f4STakashi Sakamoto 4425cd1d3f4STakashi Sakamoto /* check the sampling rate */ 4435cd1d3f4STakashi Sakamoto for (i = 0; i < ARRAY_SIZE(avc_stream_rate_table); i++) { 4445cd1d3f4STakashi Sakamoto if (format[2] == avc_stream_rate_table[i]) 4455cd1d3f4STakashi Sakamoto break; 4465cd1d3f4STakashi Sakamoto } 4475cd1d3f4STakashi Sakamoto if (i == ARRAY_SIZE(avc_stream_rate_table)) 4485cd1d3f4STakashi Sakamoto return -ENOSYS; 4495cd1d3f4STakashi Sakamoto 4505cd1d3f4STakashi Sakamoto formation->rate = oxfw_rate_table[i]; 4515cd1d3f4STakashi Sakamoto 4525cd1d3f4STakashi Sakamoto for (e = 0; e < format[4]; e++) { 4535cd1d3f4STakashi Sakamoto channels = format[5 + e * 2]; 4545cd1d3f4STakashi Sakamoto type = format[6 + e * 2]; 4555cd1d3f4STakashi Sakamoto 4565cd1d3f4STakashi Sakamoto switch (type) { 4575cd1d3f4STakashi Sakamoto /* IEC 60958 Conformant, currently handled as MBLA */ 4585cd1d3f4STakashi Sakamoto case 0x00: 4595cd1d3f4STakashi Sakamoto /* Multi Bit Linear Audio (Raw) */ 4605cd1d3f4STakashi Sakamoto case 0x06: 4615cd1d3f4STakashi Sakamoto formation->pcm += channels; 4625cd1d3f4STakashi Sakamoto break; 4635cd1d3f4STakashi Sakamoto /* MIDI Conformant */ 4645cd1d3f4STakashi Sakamoto case 0x0d: 4655cd1d3f4STakashi Sakamoto formation->midi = channels; 4665cd1d3f4STakashi Sakamoto break; 4675cd1d3f4STakashi Sakamoto /* IEC 61937-3 to 7 */ 4685cd1d3f4STakashi Sakamoto case 0x01: 4695cd1d3f4STakashi Sakamoto case 0x02: 4705cd1d3f4STakashi Sakamoto case 0x03: 4715cd1d3f4STakashi Sakamoto case 0x04: 4725cd1d3f4STakashi Sakamoto case 0x05: 4735cd1d3f4STakashi Sakamoto /* Multi Bit Linear Audio */ 4745cd1d3f4STakashi Sakamoto case 0x07: /* DVD-Audio */ 4755cd1d3f4STakashi Sakamoto case 0x0c: /* High Precision */ 4765cd1d3f4STakashi Sakamoto /* One Bit Audio */ 4775cd1d3f4STakashi Sakamoto case 0x08: /* (Plain) Raw */ 4785cd1d3f4STakashi Sakamoto case 0x09: /* (Plain) SACD */ 4795cd1d3f4STakashi Sakamoto case 0x0a: /* (Encoded) Raw */ 4805cd1d3f4STakashi Sakamoto case 0x0b: /* (Encoded) SACD */ 4815cd1d3f4STakashi Sakamoto /* SMPTE Time-Code conformant */ 4825cd1d3f4STakashi Sakamoto case 0x0e: 4835cd1d3f4STakashi Sakamoto /* Sample Count */ 4845cd1d3f4STakashi Sakamoto case 0x0f: 4855cd1d3f4STakashi Sakamoto /* Anciliary Data */ 4865cd1d3f4STakashi Sakamoto case 0x10: 4875cd1d3f4STakashi Sakamoto /* Synchronization Stream (Stereo Raw audio) */ 4885cd1d3f4STakashi Sakamoto case 0x40: 4895cd1d3f4STakashi Sakamoto /* Don't care */ 4905cd1d3f4STakashi Sakamoto case 0xff: 4915cd1d3f4STakashi Sakamoto default: 4925cd1d3f4STakashi Sakamoto return -ENOSYS; /* not supported */ 4935cd1d3f4STakashi Sakamoto } 4945cd1d3f4STakashi Sakamoto } 4955cd1d3f4STakashi Sakamoto 49649c7b3fcSTakashi Sakamoto if (formation->pcm > AM824_MAX_CHANNELS_FOR_PCM || 49749c7b3fcSTakashi Sakamoto formation->midi > AM824_MAX_CHANNELS_FOR_MIDI) 4985cd1d3f4STakashi Sakamoto return -ENOSYS; 4995cd1d3f4STakashi Sakamoto 5005cd1d3f4STakashi Sakamoto return 0; 5015cd1d3f4STakashi Sakamoto } 5025cd1d3f4STakashi Sakamoto 5035cd1d3f4STakashi Sakamoto static int 5045cd1d3f4STakashi Sakamoto assume_stream_formats(struct snd_oxfw *oxfw, enum avc_general_plug_dir dir, 5055cd1d3f4STakashi Sakamoto unsigned int pid, u8 *buf, unsigned int *len, 5065cd1d3f4STakashi Sakamoto u8 **formats) 5075cd1d3f4STakashi Sakamoto { 5085cd1d3f4STakashi Sakamoto struct snd_oxfw_stream_formation formation; 5095cd1d3f4STakashi Sakamoto unsigned int i, eid; 5105cd1d3f4STakashi Sakamoto int err; 5115cd1d3f4STakashi Sakamoto 5125cd1d3f4STakashi Sakamoto /* get format at current sampling rate */ 5135cd1d3f4STakashi Sakamoto err = avc_stream_get_format_single(oxfw->unit, dir, pid, buf, len); 5145cd1d3f4STakashi Sakamoto if (err < 0) { 5155cd1d3f4STakashi Sakamoto dev_err(&oxfw->unit->device, 5165cd1d3f4STakashi Sakamoto "fail to get current stream format for isoc %s plug %d:%d\n", 5175cd1d3f4STakashi Sakamoto (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : "out", 5185cd1d3f4STakashi Sakamoto pid, err); 5195cd1d3f4STakashi Sakamoto goto end; 5205cd1d3f4STakashi Sakamoto } 5215cd1d3f4STakashi Sakamoto 5225cd1d3f4STakashi Sakamoto /* parse and set stream format */ 5235cd1d3f4STakashi Sakamoto eid = 0; 5245cd1d3f4STakashi Sakamoto err = snd_oxfw_stream_parse_format(buf, &formation); 5255cd1d3f4STakashi Sakamoto if (err < 0) 5265cd1d3f4STakashi Sakamoto goto end; 5275cd1d3f4STakashi Sakamoto 528cd3b7116STakashi Sakamoto formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, *len, 529cd3b7116STakashi Sakamoto GFP_KERNEL); 530cd3b7116STakashi Sakamoto if (!formats[eid]) { 5315cd1d3f4STakashi Sakamoto err = -ENOMEM; 5325cd1d3f4STakashi Sakamoto goto end; 5335cd1d3f4STakashi Sakamoto } 5345cd1d3f4STakashi Sakamoto 5355cd1d3f4STakashi Sakamoto /* apply the format for each available sampling rate */ 5365cd1d3f4STakashi Sakamoto for (i = 0; i < ARRAY_SIZE(oxfw_rate_table); i++) { 5375cd1d3f4STakashi Sakamoto if (formation.rate == oxfw_rate_table[i]) 5385cd1d3f4STakashi Sakamoto continue; 5395cd1d3f4STakashi Sakamoto 5405cd1d3f4STakashi Sakamoto err = avc_general_inquiry_sig_fmt(oxfw->unit, 5415cd1d3f4STakashi Sakamoto oxfw_rate_table[i], 5425cd1d3f4STakashi Sakamoto dir, pid); 5435cd1d3f4STakashi Sakamoto if (err < 0) 5445cd1d3f4STakashi Sakamoto continue; 5455cd1d3f4STakashi Sakamoto 5465cd1d3f4STakashi Sakamoto eid++; 547cd3b7116STakashi Sakamoto formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, *len, 548cd3b7116STakashi Sakamoto GFP_KERNEL); 5495cd1d3f4STakashi Sakamoto if (formats[eid] == NULL) { 5505cd1d3f4STakashi Sakamoto err = -ENOMEM; 5515cd1d3f4STakashi Sakamoto goto end; 5525cd1d3f4STakashi Sakamoto } 5535cd1d3f4STakashi Sakamoto formats[eid][2] = avc_stream_rate_table[i]; 5545cd1d3f4STakashi Sakamoto } 5555cd1d3f4STakashi Sakamoto 5565cd1d3f4STakashi Sakamoto err = 0; 5575cd1d3f4STakashi Sakamoto oxfw->assumed = true; 5585cd1d3f4STakashi Sakamoto end: 5595cd1d3f4STakashi Sakamoto return err; 5605cd1d3f4STakashi Sakamoto } 5615cd1d3f4STakashi Sakamoto 5625cd1d3f4STakashi Sakamoto static int fill_stream_formats(struct snd_oxfw *oxfw, 5635cd1d3f4STakashi Sakamoto enum avc_general_plug_dir dir, 5645cd1d3f4STakashi Sakamoto unsigned short pid) 5655cd1d3f4STakashi Sakamoto { 5665cd1d3f4STakashi Sakamoto u8 *buf, **formats; 5675cd1d3f4STakashi Sakamoto unsigned int len, eid = 0; 5685cd1d3f4STakashi Sakamoto struct snd_oxfw_stream_formation dummy; 5695cd1d3f4STakashi Sakamoto int err; 5705cd1d3f4STakashi Sakamoto 5715cd1d3f4STakashi Sakamoto buf = kmalloc(AVC_GENERIC_FRAME_MAXIMUM_BYTES, GFP_KERNEL); 5725cd1d3f4STakashi Sakamoto if (buf == NULL) 5735cd1d3f4STakashi Sakamoto return -ENOMEM; 5745cd1d3f4STakashi Sakamoto 575b0ac0009STakashi Sakamoto if (dir == AVC_GENERAL_PLUG_DIR_OUT) 576b0ac0009STakashi Sakamoto formats = oxfw->tx_stream_formats; 577b0ac0009STakashi Sakamoto else 5785cd1d3f4STakashi Sakamoto formats = oxfw->rx_stream_formats; 5795cd1d3f4STakashi Sakamoto 5805cd1d3f4STakashi Sakamoto /* get first entry */ 5815cd1d3f4STakashi Sakamoto len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; 5825cd1d3f4STakashi Sakamoto err = avc_stream_get_format_list(oxfw->unit, dir, 0, buf, &len, 0); 5835cd1d3f4STakashi Sakamoto if (err == -ENOSYS) { 5845cd1d3f4STakashi Sakamoto /* LIST subfunction is not implemented */ 5855cd1d3f4STakashi Sakamoto len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; 5865cd1d3f4STakashi Sakamoto err = assume_stream_formats(oxfw, dir, pid, buf, &len, 5875cd1d3f4STakashi Sakamoto formats); 5885cd1d3f4STakashi Sakamoto goto end; 5895cd1d3f4STakashi Sakamoto } else if (err < 0) { 5905cd1d3f4STakashi Sakamoto dev_err(&oxfw->unit->device, 5915cd1d3f4STakashi Sakamoto "fail to get stream format %d for isoc %s plug %d:%d\n", 5925cd1d3f4STakashi Sakamoto eid, (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : "out", 5935cd1d3f4STakashi Sakamoto pid, err); 5945cd1d3f4STakashi Sakamoto goto end; 5955cd1d3f4STakashi Sakamoto } 5965cd1d3f4STakashi Sakamoto 5975cd1d3f4STakashi Sakamoto /* LIST subfunction is implemented */ 5985cd1d3f4STakashi Sakamoto while (eid < SND_OXFW_STREAM_FORMAT_ENTRIES) { 5995cd1d3f4STakashi Sakamoto /* The format is too short. */ 6005cd1d3f4STakashi Sakamoto if (len < 3) { 6015cd1d3f4STakashi Sakamoto err = -EIO; 6025cd1d3f4STakashi Sakamoto break; 6035cd1d3f4STakashi Sakamoto } 6045cd1d3f4STakashi Sakamoto 6055cd1d3f4STakashi Sakamoto /* parse and set stream format */ 6065cd1d3f4STakashi Sakamoto err = snd_oxfw_stream_parse_format(buf, &dummy); 6075cd1d3f4STakashi Sakamoto if (err < 0) 6085cd1d3f4STakashi Sakamoto break; 6095cd1d3f4STakashi Sakamoto 610cd3b7116STakashi Sakamoto formats[eid] = devm_kmemdup(&oxfw->card->card_dev, buf, len, 611cd3b7116STakashi Sakamoto GFP_KERNEL); 612cd3b7116STakashi Sakamoto if (!formats[eid]) { 6135cd1d3f4STakashi Sakamoto err = -ENOMEM; 6145cd1d3f4STakashi Sakamoto break; 6155cd1d3f4STakashi Sakamoto } 6165cd1d3f4STakashi Sakamoto 6175cd1d3f4STakashi Sakamoto /* get next entry */ 6185cd1d3f4STakashi Sakamoto len = AVC_GENERIC_FRAME_MAXIMUM_BYTES; 6195cd1d3f4STakashi Sakamoto err = avc_stream_get_format_list(oxfw->unit, dir, 0, 6205cd1d3f4STakashi Sakamoto buf, &len, ++eid); 6215cd1d3f4STakashi Sakamoto /* No entries remained. */ 6225cd1d3f4STakashi Sakamoto if (err == -EINVAL) { 6235cd1d3f4STakashi Sakamoto err = 0; 6245cd1d3f4STakashi Sakamoto break; 6255cd1d3f4STakashi Sakamoto } else if (err < 0) { 6265cd1d3f4STakashi Sakamoto dev_err(&oxfw->unit->device, 6275cd1d3f4STakashi Sakamoto "fail to get stream format %d for isoc %s plug %d:%d\n", 6285cd1d3f4STakashi Sakamoto eid, (dir == AVC_GENERAL_PLUG_DIR_IN) ? "in" : 6295cd1d3f4STakashi Sakamoto "out", 6305cd1d3f4STakashi Sakamoto pid, err); 6315cd1d3f4STakashi Sakamoto break; 6325cd1d3f4STakashi Sakamoto } 6335cd1d3f4STakashi Sakamoto } 6345cd1d3f4STakashi Sakamoto end: 6355cd1d3f4STakashi Sakamoto kfree(buf); 6365cd1d3f4STakashi Sakamoto return err; 6375cd1d3f4STakashi Sakamoto } 6385cd1d3f4STakashi Sakamoto 6395cd1d3f4STakashi Sakamoto int snd_oxfw_stream_discover(struct snd_oxfw *oxfw) 6405cd1d3f4STakashi Sakamoto { 6415cd1d3f4STakashi Sakamoto u8 plugs[AVC_PLUG_INFO_BUF_BYTES]; 64232056041STakashi Sakamoto struct snd_oxfw_stream_formation formation; 64332056041STakashi Sakamoto u8 *format; 64432056041STakashi Sakamoto unsigned int i; 6455cd1d3f4STakashi Sakamoto int err; 6465cd1d3f4STakashi Sakamoto 6475cd1d3f4STakashi Sakamoto /* the number of plugs for isoc in/out, ext in/out */ 6485cd1d3f4STakashi Sakamoto err = avc_general_get_plug_info(oxfw->unit, 0x1f, 0x07, 0x00, plugs); 6495cd1d3f4STakashi Sakamoto if (err < 0) { 6505cd1d3f4STakashi Sakamoto dev_err(&oxfw->unit->device, 6515cd1d3f4STakashi Sakamoto "fail to get info for isoc/external in/out plugs: %d\n", 6525cd1d3f4STakashi Sakamoto err); 6535cd1d3f4STakashi Sakamoto goto end; 654b0ac0009STakashi Sakamoto } else if ((plugs[0] == 0) && (plugs[1] == 0)) { 6555cd1d3f4STakashi Sakamoto err = -ENOSYS; 6565cd1d3f4STakashi Sakamoto goto end; 6575cd1d3f4STakashi Sakamoto } 6585cd1d3f4STakashi Sakamoto 659b0ac0009STakashi Sakamoto /* use oPCR[0] if exists */ 660b0ac0009STakashi Sakamoto if (plugs[1] > 0) { 661b0ac0009STakashi Sakamoto err = fill_stream_formats(oxfw, AVC_GENERAL_PLUG_DIR_OUT, 0); 662b0ac0009STakashi Sakamoto if (err < 0) 663b0ac0009STakashi Sakamoto goto end; 66432056041STakashi Sakamoto 66532056041STakashi Sakamoto for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { 66632056041STakashi Sakamoto format = oxfw->tx_stream_formats[i]; 66732056041STakashi Sakamoto if (format == NULL) 66832056041STakashi Sakamoto continue; 66932056041STakashi Sakamoto err = snd_oxfw_stream_parse_format(format, &formation); 67032056041STakashi Sakamoto if (err < 0) 67132056041STakashi Sakamoto continue; 67232056041STakashi Sakamoto 67332056041STakashi Sakamoto /* Add one MIDI port. */ 67432056041STakashi Sakamoto if (formation.midi > 0) 67532056041STakashi Sakamoto oxfw->midi_input_ports = 1; 67632056041STakashi Sakamoto } 67732056041STakashi Sakamoto 678b0ac0009STakashi Sakamoto oxfw->has_output = true; 679b0ac0009STakashi Sakamoto } 680b0ac0009STakashi Sakamoto 6815cd1d3f4STakashi Sakamoto /* use iPCR[0] if exists */ 68232056041STakashi Sakamoto if (plugs[0] > 0) { 6835cd1d3f4STakashi Sakamoto err = fill_stream_formats(oxfw, AVC_GENERAL_PLUG_DIR_IN, 0); 68432056041STakashi Sakamoto if (err < 0) 68532056041STakashi Sakamoto goto end; 68632056041STakashi Sakamoto 68732056041STakashi Sakamoto for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { 68832056041STakashi Sakamoto format = oxfw->rx_stream_formats[i]; 68932056041STakashi Sakamoto if (format == NULL) 69032056041STakashi Sakamoto continue; 69132056041STakashi Sakamoto err = snd_oxfw_stream_parse_format(format, &formation); 69232056041STakashi Sakamoto if (err < 0) 69332056041STakashi Sakamoto continue; 69432056041STakashi Sakamoto 69532056041STakashi Sakamoto /* Add one MIDI port. */ 69632056041STakashi Sakamoto if (formation.midi > 0) 69732056041STakashi Sakamoto oxfw->midi_output_ports = 1; 69832056041STakashi Sakamoto } 69932056041STakashi Sakamoto } 7005cd1d3f4STakashi Sakamoto end: 7015cd1d3f4STakashi Sakamoto return err; 7025cd1d3f4STakashi Sakamoto } 7038985f4acSTakashi Sakamoto 7048985f4acSTakashi Sakamoto void snd_oxfw_stream_lock_changed(struct snd_oxfw *oxfw) 7058985f4acSTakashi Sakamoto { 7068985f4acSTakashi Sakamoto oxfw->dev_lock_changed = true; 7078985f4acSTakashi Sakamoto wake_up(&oxfw->hwdep_wait); 7088985f4acSTakashi Sakamoto } 7098985f4acSTakashi Sakamoto 7108985f4acSTakashi Sakamoto int snd_oxfw_stream_lock_try(struct snd_oxfw *oxfw) 7118985f4acSTakashi Sakamoto { 7128985f4acSTakashi Sakamoto int err; 7138985f4acSTakashi Sakamoto 7148985f4acSTakashi Sakamoto spin_lock_irq(&oxfw->lock); 7158985f4acSTakashi Sakamoto 7168985f4acSTakashi Sakamoto /* user land lock this */ 7178985f4acSTakashi Sakamoto if (oxfw->dev_lock_count < 0) { 7188985f4acSTakashi Sakamoto err = -EBUSY; 7198985f4acSTakashi Sakamoto goto end; 7208985f4acSTakashi Sakamoto } 7218985f4acSTakashi Sakamoto 7228985f4acSTakashi Sakamoto /* this is the first time */ 7238985f4acSTakashi Sakamoto if (oxfw->dev_lock_count++ == 0) 7248985f4acSTakashi Sakamoto snd_oxfw_stream_lock_changed(oxfw); 7258985f4acSTakashi Sakamoto err = 0; 7268985f4acSTakashi Sakamoto end: 7278985f4acSTakashi Sakamoto spin_unlock_irq(&oxfw->lock); 7288985f4acSTakashi Sakamoto return err; 7298985f4acSTakashi Sakamoto } 7308985f4acSTakashi Sakamoto 7318985f4acSTakashi Sakamoto void snd_oxfw_stream_lock_release(struct snd_oxfw *oxfw) 7328985f4acSTakashi Sakamoto { 7338985f4acSTakashi Sakamoto spin_lock_irq(&oxfw->lock); 7348985f4acSTakashi Sakamoto 7358985f4acSTakashi Sakamoto if (WARN_ON(oxfw->dev_lock_count <= 0)) 7368985f4acSTakashi Sakamoto goto end; 7378985f4acSTakashi Sakamoto if (--oxfw->dev_lock_count == 0) 7388985f4acSTakashi Sakamoto snd_oxfw_stream_lock_changed(oxfw); 7398985f4acSTakashi Sakamoto end: 7408985f4acSTakashi Sakamoto spin_unlock_irq(&oxfw->lock); 7418985f4acSTakashi Sakamoto } 742