1fbbebd2cSTakashi Sakamoto /* 2fbbebd2cSTakashi Sakamoto * bebob_pcm.c - a part of driver for BeBoB based devices 3fbbebd2cSTakashi Sakamoto * 4fbbebd2cSTakashi Sakamoto * Copyright (c) 2013-2014 Takashi Sakamoto 5fbbebd2cSTakashi Sakamoto * 6fbbebd2cSTakashi Sakamoto * Licensed under the terms of the GNU General Public License, version 2. 7fbbebd2cSTakashi Sakamoto */ 8fbbebd2cSTakashi Sakamoto 9fbbebd2cSTakashi Sakamoto #include "./bebob.h" 10fbbebd2cSTakashi Sakamoto 11fbbebd2cSTakashi Sakamoto static int 12fbbebd2cSTakashi Sakamoto hw_rule_rate(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) 13fbbebd2cSTakashi Sakamoto { 14fbbebd2cSTakashi Sakamoto struct snd_bebob_stream_formation *formations = rule->private; 15fbbebd2cSTakashi Sakamoto struct snd_interval *r = 16fbbebd2cSTakashi Sakamoto hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE); 17fbbebd2cSTakashi Sakamoto const struct snd_interval *c = 18fbbebd2cSTakashi Sakamoto hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_CHANNELS); 19fbbebd2cSTakashi Sakamoto struct snd_interval t = { 20fbbebd2cSTakashi Sakamoto .min = UINT_MAX, .max = 0, .integer = 1 21fbbebd2cSTakashi Sakamoto }; 22fbbebd2cSTakashi Sakamoto unsigned int i; 23fbbebd2cSTakashi Sakamoto 24fbbebd2cSTakashi Sakamoto for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) { 25fbbebd2cSTakashi Sakamoto /* entry is invalid */ 26fbbebd2cSTakashi Sakamoto if (formations[i].pcm == 0) 27fbbebd2cSTakashi Sakamoto continue; 28fbbebd2cSTakashi Sakamoto 29fbbebd2cSTakashi Sakamoto if (!snd_interval_test(c, formations[i].pcm)) 30fbbebd2cSTakashi Sakamoto continue; 31fbbebd2cSTakashi Sakamoto 32fbbebd2cSTakashi Sakamoto t.min = min(t.min, snd_bebob_rate_table[i]); 33fbbebd2cSTakashi Sakamoto t.max = max(t.max, snd_bebob_rate_table[i]); 34fbbebd2cSTakashi Sakamoto 35fbbebd2cSTakashi Sakamoto } 36fbbebd2cSTakashi Sakamoto return snd_interval_refine(r, &t); 37fbbebd2cSTakashi Sakamoto } 38fbbebd2cSTakashi Sakamoto 39fbbebd2cSTakashi Sakamoto static int 40fbbebd2cSTakashi Sakamoto hw_rule_channels(struct snd_pcm_hw_params *params, struct snd_pcm_hw_rule *rule) 41fbbebd2cSTakashi Sakamoto { 42fbbebd2cSTakashi Sakamoto struct snd_bebob_stream_formation *formations = rule->private; 43fbbebd2cSTakashi Sakamoto struct snd_interval *c = 44fbbebd2cSTakashi Sakamoto hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS); 45fbbebd2cSTakashi Sakamoto const struct snd_interval *r = 46fbbebd2cSTakashi Sakamoto hw_param_interval_c(params, SNDRV_PCM_HW_PARAM_RATE); 47fbbebd2cSTakashi Sakamoto struct snd_interval t = { 48fbbebd2cSTakashi Sakamoto .min = UINT_MAX, .max = 0, .integer = 1 49fbbebd2cSTakashi Sakamoto }; 50fbbebd2cSTakashi Sakamoto 51fbbebd2cSTakashi Sakamoto unsigned int i; 52fbbebd2cSTakashi Sakamoto 53fbbebd2cSTakashi Sakamoto for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) { 54fbbebd2cSTakashi Sakamoto /* entry is invalid */ 55fbbebd2cSTakashi Sakamoto if (formations[i].pcm == 0) 56fbbebd2cSTakashi Sakamoto continue; 57fbbebd2cSTakashi Sakamoto 58fbbebd2cSTakashi Sakamoto if (!snd_interval_test(r, snd_bebob_rate_table[i])) 59fbbebd2cSTakashi Sakamoto continue; 60fbbebd2cSTakashi Sakamoto 61fbbebd2cSTakashi Sakamoto t.min = min(t.min, formations[i].pcm); 62fbbebd2cSTakashi Sakamoto t.max = max(t.max, formations[i].pcm); 63fbbebd2cSTakashi Sakamoto } 64fbbebd2cSTakashi Sakamoto 65fbbebd2cSTakashi Sakamoto return snd_interval_refine(c, &t); 66fbbebd2cSTakashi Sakamoto } 67fbbebd2cSTakashi Sakamoto 68fbbebd2cSTakashi Sakamoto static void 69fbbebd2cSTakashi Sakamoto limit_channels_and_rates(struct snd_pcm_hardware *hw, 70fbbebd2cSTakashi Sakamoto struct snd_bebob_stream_formation *formations) 71fbbebd2cSTakashi Sakamoto { 72fbbebd2cSTakashi Sakamoto unsigned int i; 73fbbebd2cSTakashi Sakamoto 74fbbebd2cSTakashi Sakamoto hw->channels_min = UINT_MAX; 75fbbebd2cSTakashi Sakamoto hw->channels_max = 0; 76fbbebd2cSTakashi Sakamoto 77fbbebd2cSTakashi Sakamoto hw->rate_min = UINT_MAX; 78fbbebd2cSTakashi Sakamoto hw->rate_max = 0; 79fbbebd2cSTakashi Sakamoto hw->rates = 0; 80fbbebd2cSTakashi Sakamoto 81fbbebd2cSTakashi Sakamoto for (i = 0; i < SND_BEBOB_STRM_FMT_ENTRIES; i++) { 82fbbebd2cSTakashi Sakamoto /* entry has no PCM channels */ 83fbbebd2cSTakashi Sakamoto if (formations[i].pcm == 0) 84fbbebd2cSTakashi Sakamoto continue; 85fbbebd2cSTakashi Sakamoto 86fbbebd2cSTakashi Sakamoto hw->channels_min = min(hw->channels_min, formations[i].pcm); 87fbbebd2cSTakashi Sakamoto hw->channels_max = max(hw->channels_max, formations[i].pcm); 88fbbebd2cSTakashi Sakamoto 89fbbebd2cSTakashi Sakamoto hw->rate_min = min(hw->rate_min, snd_bebob_rate_table[i]); 90fbbebd2cSTakashi Sakamoto hw->rate_max = max(hw->rate_max, snd_bebob_rate_table[i]); 91fbbebd2cSTakashi Sakamoto hw->rates |= snd_pcm_rate_to_rate_bit(snd_bebob_rate_table[i]); 92fbbebd2cSTakashi Sakamoto } 93fbbebd2cSTakashi Sakamoto } 94fbbebd2cSTakashi Sakamoto 95fbbebd2cSTakashi Sakamoto static int 96fbbebd2cSTakashi Sakamoto pcm_init_hw_params(struct snd_bebob *bebob, 97fbbebd2cSTakashi Sakamoto struct snd_pcm_substream *substream) 98fbbebd2cSTakashi Sakamoto { 99fbbebd2cSTakashi Sakamoto struct snd_pcm_runtime *runtime = substream->runtime; 100fbbebd2cSTakashi Sakamoto struct amdtp_stream *s; 101fbbebd2cSTakashi Sakamoto struct snd_bebob_stream_formation *formations; 102fbbebd2cSTakashi Sakamoto int err; 103fbbebd2cSTakashi Sakamoto 104fbbebd2cSTakashi Sakamoto if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) { 10549c7b3fcSTakashi Sakamoto runtime->hw.formats = AM824_IN_PCM_FORMAT_BITS; 106fbbebd2cSTakashi Sakamoto s = &bebob->tx_stream; 107fbbebd2cSTakashi Sakamoto formations = bebob->tx_stream_formations; 108fbbebd2cSTakashi Sakamoto } else { 10949c7b3fcSTakashi Sakamoto runtime->hw.formats = AM824_OUT_PCM_FORMAT_BITS; 110fbbebd2cSTakashi Sakamoto s = &bebob->rx_stream; 111fbbebd2cSTakashi Sakamoto formations = bebob->rx_stream_formations; 112fbbebd2cSTakashi Sakamoto } 113fbbebd2cSTakashi Sakamoto 114fbbebd2cSTakashi Sakamoto limit_channels_and_rates(&runtime->hw, formations); 115fbbebd2cSTakashi Sakamoto 116fbbebd2cSTakashi Sakamoto err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS, 117fbbebd2cSTakashi Sakamoto hw_rule_channels, formations, 118fbbebd2cSTakashi Sakamoto SNDRV_PCM_HW_PARAM_RATE, -1); 119fbbebd2cSTakashi Sakamoto if (err < 0) 120fbbebd2cSTakashi Sakamoto goto end; 121fbbebd2cSTakashi Sakamoto 122fbbebd2cSTakashi Sakamoto err = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, 123fbbebd2cSTakashi Sakamoto hw_rule_rate, formations, 124fbbebd2cSTakashi Sakamoto SNDRV_PCM_HW_PARAM_CHANNELS, -1); 125fbbebd2cSTakashi Sakamoto if (err < 0) 126fbbebd2cSTakashi Sakamoto goto end; 127fbbebd2cSTakashi Sakamoto 128bc8500daSTakashi Sakamoto err = amdtp_am824_add_pcm_hw_constraints(s, runtime); 129fbbebd2cSTakashi Sakamoto end: 130fbbebd2cSTakashi Sakamoto return err; 131fbbebd2cSTakashi Sakamoto } 132fbbebd2cSTakashi Sakamoto 133fbbebd2cSTakashi Sakamoto static int 134fbbebd2cSTakashi Sakamoto pcm_open(struct snd_pcm_substream *substream) 135fbbebd2cSTakashi Sakamoto { 136fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 1376b9866c8SJulia Lawall const struct snd_bebob_rate_spec *spec = bebob->spec->rate; 138fbbebd2cSTakashi Sakamoto unsigned int sampling_rate; 1393e254b16STakashi Sakamoto enum snd_bebob_clock_type src; 140fbbebd2cSTakashi Sakamoto int err; 141fbbebd2cSTakashi Sakamoto 142618eabeaSTakashi Sakamoto err = snd_bebob_stream_lock_try(bebob); 143fbbebd2cSTakashi Sakamoto if (err < 0) 144fbbebd2cSTakashi Sakamoto goto end; 145fbbebd2cSTakashi Sakamoto 146618eabeaSTakashi Sakamoto err = pcm_init_hw_params(bebob, substream); 147618eabeaSTakashi Sakamoto if (err < 0) 148618eabeaSTakashi Sakamoto goto err_locked; 149618eabeaSTakashi Sakamoto 1503e254b16STakashi Sakamoto err = snd_bebob_stream_get_clock_src(bebob, &src); 151fbbebd2cSTakashi Sakamoto if (err < 0) 152618eabeaSTakashi Sakamoto goto err_locked; 153fbbebd2cSTakashi Sakamoto 154fbbebd2cSTakashi Sakamoto /* 155fbbebd2cSTakashi Sakamoto * When source of clock is internal or any PCM stream are running, 156fbbebd2cSTakashi Sakamoto * the available sampling rate is limited at current sampling rate. 157fbbebd2cSTakashi Sakamoto */ 1583e254b16STakashi Sakamoto if (src == SND_BEBOB_CLOCK_TYPE_EXTERNAL || 159fbbebd2cSTakashi Sakamoto amdtp_stream_pcm_running(&bebob->tx_stream) || 160fbbebd2cSTakashi Sakamoto amdtp_stream_pcm_running(&bebob->rx_stream)) { 1611fc9522aSTakashi Sakamoto err = spec->get(bebob, &sampling_rate); 162fbbebd2cSTakashi Sakamoto if (err < 0) { 163fbbebd2cSTakashi Sakamoto dev_err(&bebob->unit->device, 164fbbebd2cSTakashi Sakamoto "fail to get sampling rate: %d\n", err); 165618eabeaSTakashi Sakamoto goto err_locked; 166fbbebd2cSTakashi Sakamoto } 167fbbebd2cSTakashi Sakamoto 168fbbebd2cSTakashi Sakamoto substream->runtime->hw.rate_min = sampling_rate; 169fbbebd2cSTakashi Sakamoto substream->runtime->hw.rate_max = sampling_rate; 170fbbebd2cSTakashi Sakamoto } 171fbbebd2cSTakashi Sakamoto 172fbbebd2cSTakashi Sakamoto snd_pcm_set_sync(substream); 173fbbebd2cSTakashi Sakamoto end: 174fbbebd2cSTakashi Sakamoto return err; 175618eabeaSTakashi Sakamoto err_locked: 176618eabeaSTakashi Sakamoto snd_bebob_stream_lock_release(bebob); 177618eabeaSTakashi Sakamoto return err; 178fbbebd2cSTakashi Sakamoto } 179fbbebd2cSTakashi Sakamoto 180fbbebd2cSTakashi Sakamoto static int 181fbbebd2cSTakashi Sakamoto pcm_close(struct snd_pcm_substream *substream) 182fbbebd2cSTakashi Sakamoto { 183618eabeaSTakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 184618eabeaSTakashi Sakamoto snd_bebob_stream_lock_release(bebob); 185fbbebd2cSTakashi Sakamoto return 0; 186fbbebd2cSTakashi Sakamoto } 187fbbebd2cSTakashi Sakamoto 188f69fc179STakashi Sakamoto static int pcm_hw_params(struct snd_pcm_substream *substream, 189fbbebd2cSTakashi Sakamoto struct snd_pcm_hw_params *hw_params) 190fbbebd2cSTakashi Sakamoto { 191fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 19222c103cdSTakashi Sakamoto int err; 19322c103cdSTakashi Sakamoto 19422c103cdSTakashi Sakamoto err = snd_pcm_lib_alloc_vmalloc_buffer(substream, 19522c103cdSTakashi Sakamoto params_buffer_bytes(hw_params)); 19622c103cdSTakashi Sakamoto if (err < 0) 19722c103cdSTakashi Sakamoto return err; 198fbbebd2cSTakashi Sakamoto 1992a71e701STakashi Sakamoto if (substream->runtime->status->state == SNDRV_PCM_STATE_OPEN) { 200ac2888b9STakashi Sakamoto unsigned int rate = params_rate(hw_params); 201ac2888b9STakashi Sakamoto 2022a71e701STakashi Sakamoto mutex_lock(&bebob->mutex); 203ac2888b9STakashi Sakamoto err = snd_bebob_stream_reserve_duplex(bebob, rate); 204ac2888b9STakashi Sakamoto if (err >= 0) 205ac2888b9STakashi Sakamoto ++bebob->substreams_counter; 2062a71e701STakashi Sakamoto mutex_unlock(&bebob->mutex); 2072a71e701STakashi Sakamoto } 20885130cb4STakashi Sakamoto 209ac2888b9STakashi Sakamoto return err; 210fbbebd2cSTakashi Sakamoto } 211fbbebd2cSTakashi Sakamoto 212f69fc179STakashi Sakamoto static int pcm_hw_free(struct snd_pcm_substream *substream) 213fbbebd2cSTakashi Sakamoto { 214fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 215fbbebd2cSTakashi Sakamoto 2162a71e701STakashi Sakamoto mutex_lock(&bebob->mutex); 2175e818ac2STakashi Sakamoto 2185e818ac2STakashi Sakamoto if (substream->runtime->status->state != SNDRV_PCM_STATE_OPEN) 2194fd6c6c7STakashi Sakamoto bebob->substreams_counter--; 220fbbebd2cSTakashi Sakamoto 221fbbebd2cSTakashi Sakamoto snd_bebob_stream_stop_duplex(bebob); 222fbbebd2cSTakashi Sakamoto 2235e818ac2STakashi Sakamoto mutex_unlock(&bebob->mutex); 2245e818ac2STakashi Sakamoto 225fbbebd2cSTakashi Sakamoto return snd_pcm_lib_free_vmalloc_buffer(substream); 226fbbebd2cSTakashi Sakamoto } 227fbbebd2cSTakashi Sakamoto 228fbbebd2cSTakashi Sakamoto static int 229fbbebd2cSTakashi Sakamoto pcm_capture_prepare(struct snd_pcm_substream *substream) 230fbbebd2cSTakashi Sakamoto { 231fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 232fbbebd2cSTakashi Sakamoto int err; 233fbbebd2cSTakashi Sakamoto 234ac2888b9STakashi Sakamoto err = snd_bebob_stream_start_duplex(bebob); 235fbbebd2cSTakashi Sakamoto if (err >= 0) 236fbbebd2cSTakashi Sakamoto amdtp_stream_pcm_prepare(&bebob->tx_stream); 237fbbebd2cSTakashi Sakamoto 238fbbebd2cSTakashi Sakamoto return err; 239fbbebd2cSTakashi Sakamoto } 240fbbebd2cSTakashi Sakamoto static int 241fbbebd2cSTakashi Sakamoto pcm_playback_prepare(struct snd_pcm_substream *substream) 242fbbebd2cSTakashi Sakamoto { 243fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 244fbbebd2cSTakashi Sakamoto int err; 245fbbebd2cSTakashi Sakamoto 246ac2888b9STakashi Sakamoto err = snd_bebob_stream_start_duplex(bebob); 247fbbebd2cSTakashi Sakamoto if (err >= 0) 248fbbebd2cSTakashi Sakamoto amdtp_stream_pcm_prepare(&bebob->rx_stream); 249fbbebd2cSTakashi Sakamoto 250fbbebd2cSTakashi Sakamoto return err; 251fbbebd2cSTakashi Sakamoto } 252fbbebd2cSTakashi Sakamoto 253fbbebd2cSTakashi Sakamoto static int 254fbbebd2cSTakashi Sakamoto pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd) 255fbbebd2cSTakashi Sakamoto { 256fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 257fbbebd2cSTakashi Sakamoto 258fbbebd2cSTakashi Sakamoto switch (cmd) { 259fbbebd2cSTakashi Sakamoto case SNDRV_PCM_TRIGGER_START: 260fbbebd2cSTakashi Sakamoto amdtp_stream_pcm_trigger(&bebob->tx_stream, substream); 261fbbebd2cSTakashi Sakamoto break; 262fbbebd2cSTakashi Sakamoto case SNDRV_PCM_TRIGGER_STOP: 263fbbebd2cSTakashi Sakamoto amdtp_stream_pcm_trigger(&bebob->tx_stream, NULL); 264fbbebd2cSTakashi Sakamoto break; 265fbbebd2cSTakashi Sakamoto default: 266fbbebd2cSTakashi Sakamoto return -EINVAL; 267fbbebd2cSTakashi Sakamoto } 268fbbebd2cSTakashi Sakamoto 269fbbebd2cSTakashi Sakamoto return 0; 270fbbebd2cSTakashi Sakamoto } 271fbbebd2cSTakashi Sakamoto static int 272fbbebd2cSTakashi Sakamoto pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd) 273fbbebd2cSTakashi Sakamoto { 274fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 275fbbebd2cSTakashi Sakamoto 276fbbebd2cSTakashi Sakamoto switch (cmd) { 277fbbebd2cSTakashi Sakamoto case SNDRV_PCM_TRIGGER_START: 278fbbebd2cSTakashi Sakamoto amdtp_stream_pcm_trigger(&bebob->rx_stream, substream); 279fbbebd2cSTakashi Sakamoto break; 280fbbebd2cSTakashi Sakamoto case SNDRV_PCM_TRIGGER_STOP: 281fbbebd2cSTakashi Sakamoto amdtp_stream_pcm_trigger(&bebob->rx_stream, NULL); 282fbbebd2cSTakashi Sakamoto break; 283fbbebd2cSTakashi Sakamoto default: 284fbbebd2cSTakashi Sakamoto return -EINVAL; 285fbbebd2cSTakashi Sakamoto } 286fbbebd2cSTakashi Sakamoto 287fbbebd2cSTakashi Sakamoto return 0; 288fbbebd2cSTakashi Sakamoto } 289fbbebd2cSTakashi Sakamoto 290fbbebd2cSTakashi Sakamoto static snd_pcm_uframes_t 291fbbebd2cSTakashi Sakamoto pcm_capture_pointer(struct snd_pcm_substream *sbstrm) 292fbbebd2cSTakashi Sakamoto { 293fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = sbstrm->private_data; 294fbbebd2cSTakashi Sakamoto return amdtp_stream_pcm_pointer(&bebob->tx_stream); 295fbbebd2cSTakashi Sakamoto } 296fbbebd2cSTakashi Sakamoto static snd_pcm_uframes_t 297fbbebd2cSTakashi Sakamoto pcm_playback_pointer(struct snd_pcm_substream *sbstrm) 298fbbebd2cSTakashi Sakamoto { 299fbbebd2cSTakashi Sakamoto struct snd_bebob *bebob = sbstrm->private_data; 300fbbebd2cSTakashi Sakamoto return amdtp_stream_pcm_pointer(&bebob->rx_stream); 301fbbebd2cSTakashi Sakamoto } 302fbbebd2cSTakashi Sakamoto 303875becf8STakashi Sakamoto static int pcm_capture_ack(struct snd_pcm_substream *substream) 304875becf8STakashi Sakamoto { 305875becf8STakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 306875becf8STakashi Sakamoto 307875becf8STakashi Sakamoto return amdtp_stream_pcm_ack(&bebob->tx_stream); 308875becf8STakashi Sakamoto } 309875becf8STakashi Sakamoto 310875becf8STakashi Sakamoto static int pcm_playback_ack(struct snd_pcm_substream *substream) 311875becf8STakashi Sakamoto { 312875becf8STakashi Sakamoto struct snd_bebob *bebob = substream->private_data; 313875becf8STakashi Sakamoto 314875becf8STakashi Sakamoto return amdtp_stream_pcm_ack(&bebob->rx_stream); 315875becf8STakashi Sakamoto } 316875becf8STakashi Sakamoto 3174780f774STakashi Sakamoto int snd_bebob_create_pcm_devices(struct snd_bebob *bebob) 3184780f774STakashi Sakamoto { 3194780f774STakashi Sakamoto static const struct snd_pcm_ops capture_ops = { 320fbbebd2cSTakashi Sakamoto .open = pcm_open, 321fbbebd2cSTakashi Sakamoto .close = pcm_close, 322fbbebd2cSTakashi Sakamoto .ioctl = snd_pcm_lib_ioctl, 323f69fc179STakashi Sakamoto .hw_params = pcm_hw_params, 324f69fc179STakashi Sakamoto .hw_free = pcm_hw_free, 325fbbebd2cSTakashi Sakamoto .prepare = pcm_capture_prepare, 326fbbebd2cSTakashi Sakamoto .trigger = pcm_capture_trigger, 327fbbebd2cSTakashi Sakamoto .pointer = pcm_capture_pointer, 328875becf8STakashi Sakamoto .ack = pcm_capture_ack, 329fbbebd2cSTakashi Sakamoto .page = snd_pcm_lib_get_vmalloc_page, 330fbbebd2cSTakashi Sakamoto }; 3314780f774STakashi Sakamoto static const struct snd_pcm_ops playback_ops = { 332fbbebd2cSTakashi Sakamoto .open = pcm_open, 333fbbebd2cSTakashi Sakamoto .close = pcm_close, 334fbbebd2cSTakashi Sakamoto .ioctl = snd_pcm_lib_ioctl, 335f69fc179STakashi Sakamoto .hw_params = pcm_hw_params, 336f69fc179STakashi Sakamoto .hw_free = pcm_hw_free, 337fbbebd2cSTakashi Sakamoto .prepare = pcm_playback_prepare, 338fbbebd2cSTakashi Sakamoto .trigger = pcm_playback_trigger, 339fbbebd2cSTakashi Sakamoto .pointer = pcm_playback_pointer, 340875becf8STakashi Sakamoto .ack = pcm_playback_ack, 341fbbebd2cSTakashi Sakamoto .page = snd_pcm_lib_get_vmalloc_page, 342fbbebd2cSTakashi Sakamoto }; 343fbbebd2cSTakashi Sakamoto struct snd_pcm *pcm; 344fbbebd2cSTakashi Sakamoto int err; 345fbbebd2cSTakashi Sakamoto 346fbbebd2cSTakashi Sakamoto err = snd_pcm_new(bebob->card, bebob->card->driver, 0, 1, 1, &pcm); 347fbbebd2cSTakashi Sakamoto if (err < 0) 348fbbebd2cSTakashi Sakamoto goto end; 349fbbebd2cSTakashi Sakamoto 350fbbebd2cSTakashi Sakamoto pcm->private_data = bebob; 351fbbebd2cSTakashi Sakamoto snprintf(pcm->name, sizeof(pcm->name), 352fbbebd2cSTakashi Sakamoto "%s PCM", bebob->card->shortname); 3534780f774STakashi Sakamoto snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_ops); 3544780f774STakashi Sakamoto snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_ops); 355fbbebd2cSTakashi Sakamoto end: 356fbbebd2cSTakashi Sakamoto return err; 357fbbebd2cSTakashi Sakamoto } 358