1253544Shselasky/*- 2253544Shselasky * Copyright (c) 2010 Hans Petter Selasky. All rights reserved. 3253544Shselasky * 4253544Shselasky * Redistribution and use in source and binary forms, with or without 5253544Shselasky * modification, are permitted provided that the following conditions 6253544Shselasky * are met: 7253544Shselasky * 1. Redistributions of source code must retain the above copyright 8253544Shselasky * notice, this list of conditions and the following disclaimer. 9253544Shselasky * 2. Redistributions in binary form must reproduce the above copyright 10253544Shselasky * notice, this list of conditions and the following disclaimer in the 11253544Shselasky * documentation and/or other materials provided with the distribution. 12253544Shselasky * 13253544Shselasky * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14253544Shselasky * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15253544Shselasky * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16253544Shselasky * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17253544Shselasky * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18253544Shselasky * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19253544Shselasky * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20253544Shselasky * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21253544Shselasky * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22253544Shselasky * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23253544Shselasky * SUCH DAMAGE. 24253544Shselasky */ 25253544Shselasky 26253544Shselasky/* 27253544Shselasky * USB audio specs: http://www.usb.org/developers/devclass_docs/audio10.pdf 28253544Shselasky * http://www.usb.org/developers/devclass_docs/frmts10.pdf 29253544Shselasky * http://www.usb.org/developers/devclass_docs/termt10.pdf 30253544Shselasky */ 31253544Shselasky 32253618Sobrien#include <sys/param.h> 33253618Sobrien__FBSDID("$FreeBSD$"); 34253618Sobrien 35253544Shselasky#include <sys/stdint.h> 36253544Shselasky#include <sys/stddef.h> 37253544Shselasky#include <sys/queue.h> 38253544Shselasky#include <sys/systm.h> 39253544Shselasky#include <sys/kernel.h> 40253544Shselasky#include <sys/bus.h> 41253544Shselasky#include <sys/linker_set.h> 42253544Shselasky#include <sys/module.h> 43253544Shselasky#include <sys/lock.h> 44253544Shselasky#include <sys/mutex.h> 45253544Shselasky#include <sys/condvar.h> 46253544Shselasky#include <sys/sysctl.h> 47253544Shselasky#include <sys/sx.h> 48253544Shselasky#include <sys/unistd.h> 49253544Shselasky#include <sys/callout.h> 50253544Shselasky#include <sys/malloc.h> 51253544Shselasky#include <sys/priv.h> 52253544Shselasky 53253544Shselasky#include <dev/usb/usb.h> 54253544Shselasky#include <dev/usb/usb_cdc.h> 55253544Shselasky#include <dev/usb/usbdi.h> 56253544Shselasky#include <dev/usb/usbdi_util.h> 57253544Shselasky#include <dev/usb/usbhid.h> 58253544Shselasky#include "usb_if.h" 59253544Shselasky 60253544Shselasky#define USB_DEBUG_VAR g_audio_debug 61253544Shselasky#include <dev/usb/usb_debug.h> 62253544Shselasky 63253544Shselasky#include <dev/usb/gadget/g_audio.h> 64253544Shselasky 65253544Shselaskyenum { 66253544Shselasky G_AUDIO_ISOC0_RD, 67253544Shselasky G_AUDIO_ISOC1_RD, 68253544Shselasky G_AUDIO_ISOC0_WR, 69253544Shselasky G_AUDIO_ISOC1_WR, 70253544Shselasky G_AUDIO_N_TRANSFER, 71253544Shselasky}; 72253544Shselasky 73253544Shselaskystruct g_audio_softc { 74253544Shselasky struct mtx sc_mtx; 75253544Shselasky struct usb_callout sc_callout; 76253544Shselasky struct usb_callout sc_watchdog; 77253544Shselasky struct usb_xfer *sc_xfer[G_AUDIO_N_TRANSFER]; 78253544Shselasky 79253544Shselasky int sc_mode; 80253544Shselasky int sc_pattern_len; 81253544Shselasky int sc_throughput; 82253544Shselasky int sc_tx_interval; 83253544Shselasky int sc_state; 84253544Shselasky int sc_noise_rem; 85253544Shselasky 86253544Shselasky int8_t sc_pattern[G_AUDIO_MAX_STRLEN]; 87253544Shselasky 88253544Shselasky uint16_t sc_data_len[2][G_AUDIO_FRAMES]; 89253544Shselasky 90253544Shselasky int16_t sc_data_buf[2][G_AUDIO_BUFSIZE / 2]; 91253544Shselasky 92253544Shselasky uint8_t sc_volume_setting[32]; 93253544Shselasky uint8_t sc_volume_limit[32]; 94253544Shselasky uint8_t sc_sample_rate[32]; 95253544Shselasky}; 96253544Shselasky 97253544Shselaskystatic SYSCTL_NODE(_hw_usb, OID_AUTO, g_audio, CTLFLAG_RW, 0, "USB audio gadget"); 98253544Shselasky 99253544Shselasky#ifdef USB_DEBUG 100253544Shselaskystatic int g_audio_debug = 0; 101253544Shselasky 102276701ShselaskySYSCTL_INT(_hw_usb_g_audio, OID_AUTO, debug, CTLFLAG_RWTUN, 103253544Shselasky &g_audio_debug, 0, "Debug level"); 104253544Shselasky#endif 105253544Shselasky 106253544Shselaskystatic int g_audio_mode = 0; 107253544Shselasky 108276701ShselaskySYSCTL_INT(_hw_usb_g_audio, OID_AUTO, mode, CTLFLAG_RWTUN, 109253544Shselasky &g_audio_mode, 0, "Mode selection"); 110253544Shselasky 111253544Shselaskystatic int g_audio_pattern_interval = 1000; 112253544Shselasky 113276701ShselaskySYSCTL_INT(_hw_usb_g_audio, OID_AUTO, pattern_interval, CTLFLAG_RWTUN, 114253544Shselasky &g_audio_pattern_interval, 0, "Pattern interval in milliseconds"); 115253544Shselasky 116253544Shselaskystatic char g_audio_pattern_data[G_AUDIO_MAX_STRLEN]; 117253544Shselasky 118253544ShselaskySYSCTL_STRING(_hw_usb_g_audio, OID_AUTO, pattern, CTLFLAG_RW, 119253544Shselasky &g_audio_pattern_data, sizeof(g_audio_pattern_data), "Data pattern"); 120253544Shselasky 121253544Shselaskystatic int g_audio_throughput; 122253544Shselasky 123253544ShselaskySYSCTL_INT(_hw_usb_g_audio, OID_AUTO, throughput, CTLFLAG_RD, 124253544Shselasky &g_audio_throughput, sizeof(g_audio_throughput), "Throughput in bytes per second"); 125253544Shselasky 126253544Shselaskystatic device_probe_t g_audio_probe; 127253544Shselaskystatic device_attach_t g_audio_attach; 128253544Shselaskystatic device_detach_t g_audio_detach; 129253544Shselaskystatic usb_handle_request_t g_audio_handle_request; 130253544Shselasky 131253544Shselaskystatic usb_callback_t g_audio_isoc_read_callback; 132253544Shselaskystatic usb_callback_t g_audio_isoc_write_callback; 133253544Shselasky 134253544Shselaskystatic devclass_t g_audio_devclass; 135253544Shselasky 136253544Shselaskystatic void g_audio_watchdog(void *arg); 137253544Shselaskystatic void g_audio_timeout(void *arg); 138253544Shselasky 139253544Shselaskystatic device_method_t g_audio_methods[] = { 140253544Shselasky /* USB interface */ 141253544Shselasky DEVMETHOD(usb_handle_request, g_audio_handle_request), 142253544Shselasky 143253544Shselasky /* Device interface */ 144253544Shselasky DEVMETHOD(device_probe, g_audio_probe), 145253544Shselasky DEVMETHOD(device_attach, g_audio_attach), 146253544Shselasky DEVMETHOD(device_detach, g_audio_detach), 147253544Shselasky 148253544Shselasky DEVMETHOD_END 149253544Shselasky}; 150253544Shselasky 151253544Shselaskystatic driver_t g_audio_driver = { 152253544Shselasky .name = "g_audio", 153253544Shselasky .methods = g_audio_methods, 154253544Shselasky .size = sizeof(struct g_audio_softc), 155253544Shselasky}; 156253544Shselasky 157253544ShselaskyDRIVER_MODULE(g_audio, uhub, g_audio_driver, g_audio_devclass, 0, 0); 158253544ShselaskyMODULE_DEPEND(g_audio, usb, 1, 1, 1); 159253544Shselasky 160253544Shselaskystatic const struct usb_config g_audio_config[G_AUDIO_N_TRANSFER] = { 161253544Shselasky 162253544Shselasky [G_AUDIO_ISOC0_RD] = { 163253544Shselasky .type = UE_ISOCHRONOUS, 164253544Shselasky .endpoint = UE_ADDR_ANY, 165253544Shselasky .direction = UE_DIR_RX, 166253544Shselasky .flags = {.ext_buffer = 1,.pipe_bof = 1,.short_xfer_ok = 1,}, 167253544Shselasky .bufsize = G_AUDIO_BUFSIZE, 168253544Shselasky .callback = &g_audio_isoc_read_callback, 169253544Shselasky .frames = G_AUDIO_FRAMES, 170253544Shselasky .usb_mode = USB_MODE_DEVICE, 171253544Shselasky .if_index = 1, 172253544Shselasky }, 173253544Shselasky 174253544Shselasky [G_AUDIO_ISOC1_RD] = { 175253544Shselasky .type = UE_ISOCHRONOUS, 176253544Shselasky .endpoint = UE_ADDR_ANY, 177253544Shselasky .direction = UE_DIR_RX, 178253544Shselasky .flags = {.ext_buffer = 1,.pipe_bof = 1,.short_xfer_ok = 1,}, 179253544Shselasky .bufsize = G_AUDIO_BUFSIZE, 180253544Shselasky .callback = &g_audio_isoc_read_callback, 181253544Shselasky .frames = G_AUDIO_FRAMES, 182253544Shselasky .usb_mode = USB_MODE_DEVICE, 183253544Shselasky .if_index = 1, 184253544Shselasky }, 185253544Shselasky 186253544Shselasky [G_AUDIO_ISOC0_WR] = { 187253544Shselasky .type = UE_ISOCHRONOUS, 188253544Shselasky .endpoint = UE_ADDR_ANY, 189253544Shselasky .direction = UE_DIR_TX, 190253544Shselasky .flags = {.ext_buffer = 1,.pipe_bof = 1,}, 191253544Shselasky .bufsize = G_AUDIO_BUFSIZE, 192253544Shselasky .callback = &g_audio_isoc_write_callback, 193253544Shselasky .frames = G_AUDIO_FRAMES, 194253544Shselasky .usb_mode = USB_MODE_DEVICE, 195253544Shselasky .if_index = 2, 196253544Shselasky }, 197253544Shselasky 198253544Shselasky [G_AUDIO_ISOC1_WR] = { 199253544Shselasky .type = UE_ISOCHRONOUS, 200253544Shselasky .endpoint = UE_ADDR_ANY, 201253544Shselasky .direction = UE_DIR_TX, 202253544Shselasky .flags = {.ext_buffer = 1,.pipe_bof = 1,}, 203253544Shselasky .bufsize = G_AUDIO_BUFSIZE, 204253544Shselasky .callback = &g_audio_isoc_write_callback, 205253544Shselasky .frames = G_AUDIO_FRAMES, 206253544Shselasky .usb_mode = USB_MODE_DEVICE, 207253544Shselasky .if_index = 2, 208253544Shselasky }, 209253544Shselasky}; 210253544Shselasky 211253544Shselaskystatic void 212253544Shselaskyg_audio_timeout_reset(struct g_audio_softc *sc) 213253544Shselasky{ 214253544Shselasky int i = g_audio_pattern_interval; 215253544Shselasky 216253544Shselasky sc->sc_tx_interval = i; 217253544Shselasky 218253544Shselasky if (i <= 0) 219253544Shselasky i = 1; 220253544Shselasky else if (i > 1023) 221253544Shselasky i = 1023; 222253544Shselasky 223253544Shselasky i = USB_MS_TO_TICKS(i); 224253544Shselasky 225253544Shselasky usb_callout_reset(&sc->sc_callout, i, &g_audio_timeout, sc); 226253544Shselasky} 227253544Shselasky 228253544Shselaskystatic void 229253544Shselaskyg_audio_timeout(void *arg) 230253544Shselasky{ 231253544Shselasky struct g_audio_softc *sc = arg; 232253544Shselasky 233253544Shselasky sc->sc_mode = g_audio_mode; 234253544Shselasky 235253544Shselasky memcpy(sc->sc_pattern, g_audio_pattern_data, sizeof(sc->sc_pattern)); 236253544Shselasky 237253544Shselasky sc->sc_pattern[G_AUDIO_MAX_STRLEN - 1] = 0; 238253544Shselasky 239253544Shselasky sc->sc_pattern_len = strlen(sc->sc_pattern); 240253544Shselasky 241253544Shselasky if (sc->sc_mode != G_AUDIO_MODE_LOOP) { 242253544Shselasky usbd_transfer_start(sc->sc_xfer[G_AUDIO_ISOC0_WR]); 243253544Shselasky usbd_transfer_start(sc->sc_xfer[G_AUDIO_ISOC1_WR]); 244253544Shselasky } 245253544Shselasky g_audio_timeout_reset(sc); 246253544Shselasky} 247253544Shselasky 248253544Shselaskystatic void 249253544Shselaskyg_audio_watchdog_reset(struct g_audio_softc *sc) 250253544Shselasky{ 251253544Shselasky usb_callout_reset(&sc->sc_watchdog, hz, &g_audio_watchdog, sc); 252253544Shselasky} 253253544Shselasky 254253544Shselaskystatic void 255253544Shselaskyg_audio_watchdog(void *arg) 256253544Shselasky{ 257253544Shselasky struct g_audio_softc *sc = arg; 258253544Shselasky int i; 259253544Shselasky 260253544Shselasky i = sc->sc_throughput; 261253544Shselasky 262253544Shselasky sc->sc_throughput = 0; 263253544Shselasky 264253544Shselasky g_audio_throughput = i; 265253544Shselasky 266253544Shselasky g_audio_watchdog_reset(sc); 267253544Shselasky} 268253544Shselasky 269253544Shselaskystatic int 270253544Shselaskyg_audio_probe(device_t dev) 271253544Shselasky{ 272253544Shselasky struct usb_attach_arg *uaa = device_get_ivars(dev); 273253544Shselasky 274253544Shselasky DPRINTFN(11, "\n"); 275253544Shselasky 276253544Shselasky if (uaa->usb_mode != USB_MODE_DEVICE) 277253544Shselasky return (ENXIO); 278253544Shselasky 279253544Shselasky if ((uaa->info.bInterfaceClass == UICLASS_AUDIO) && 280253544Shselasky (uaa->info.bInterfaceSubClass == UISUBCLASS_AUDIOCONTROL)) 281253544Shselasky return (0); 282253544Shselasky 283253544Shselasky return (ENXIO); 284253544Shselasky} 285253544Shselasky 286253544Shselaskystatic int 287253544Shselaskyg_audio_attach(device_t dev) 288253544Shselasky{ 289253544Shselasky struct g_audio_softc *sc = device_get_softc(dev); 290253544Shselasky struct usb_attach_arg *uaa = device_get_ivars(dev); 291253544Shselasky int error; 292253544Shselasky int i; 293253544Shselasky uint8_t iface_index[3]; 294253544Shselasky 295253544Shselasky DPRINTFN(11, "\n"); 296253544Shselasky 297253544Shselasky device_set_usb_desc(dev); 298253544Shselasky 299253544Shselasky mtx_init(&sc->sc_mtx, "g_audio", NULL, MTX_DEF); 300253544Shselasky 301253544Shselasky usb_callout_init_mtx(&sc->sc_callout, &sc->sc_mtx, 0); 302253544Shselasky usb_callout_init_mtx(&sc->sc_watchdog, &sc->sc_mtx, 0); 303253544Shselasky 304253544Shselasky sc->sc_mode = G_AUDIO_MODE_SILENT; 305253544Shselasky 306253544Shselasky sc->sc_noise_rem = 1; 307253544Shselasky 308253544Shselasky for (i = 0; i != G_AUDIO_FRAMES; i++) { 309253544Shselasky sc->sc_data_len[0][i] = G_AUDIO_BUFSIZE / G_AUDIO_FRAMES; 310253544Shselasky sc->sc_data_len[1][i] = G_AUDIO_BUFSIZE / G_AUDIO_FRAMES; 311253544Shselasky } 312253544Shselasky 313253544Shselasky iface_index[0] = uaa->info.bIfaceIndex; 314253544Shselasky iface_index[1] = uaa->info.bIfaceIndex + 1; 315253544Shselasky iface_index[2] = uaa->info.bIfaceIndex + 2; 316253544Shselasky 317253544Shselasky error = usbd_set_alt_interface_index(uaa->device, iface_index[1], 1); 318253544Shselasky if (error) { 319253544Shselasky DPRINTF("alt iface setting error=%s\n", usbd_errstr(error)); 320253544Shselasky goto detach; 321253544Shselasky } 322253544Shselasky error = usbd_set_alt_interface_index(uaa->device, iface_index[2], 1); 323253544Shselasky if (error) { 324253544Shselasky DPRINTF("alt iface setting error=%s\n", usbd_errstr(error)); 325253544Shselasky goto detach; 326253544Shselasky } 327253544Shselasky error = usbd_transfer_setup(uaa->device, 328253544Shselasky iface_index, sc->sc_xfer, g_audio_config, 329253544Shselasky G_AUDIO_N_TRANSFER, sc, &sc->sc_mtx); 330253544Shselasky 331253544Shselasky if (error) { 332253544Shselasky DPRINTF("error=%s\n", usbd_errstr(error)); 333253544Shselasky goto detach; 334253544Shselasky } 335253544Shselasky usbd_set_parent_iface(uaa->device, iface_index[1], iface_index[0]); 336253544Shselasky usbd_set_parent_iface(uaa->device, iface_index[2], iface_index[0]); 337253544Shselasky 338253544Shselasky mtx_lock(&sc->sc_mtx); 339253544Shselasky 340253544Shselasky usbd_transfer_start(sc->sc_xfer[G_AUDIO_ISOC0_RD]); 341253544Shselasky usbd_transfer_start(sc->sc_xfer[G_AUDIO_ISOC1_RD]); 342253544Shselasky 343253544Shselasky usbd_transfer_start(sc->sc_xfer[G_AUDIO_ISOC0_WR]); 344253544Shselasky usbd_transfer_start(sc->sc_xfer[G_AUDIO_ISOC1_WR]); 345253544Shselasky 346253544Shselasky g_audio_timeout_reset(sc); 347253544Shselasky 348253544Shselasky g_audio_watchdog_reset(sc); 349253544Shselasky 350253544Shselasky mtx_unlock(&sc->sc_mtx); 351253544Shselasky 352253544Shselasky return (0); /* success */ 353253544Shselasky 354253544Shselaskydetach: 355253544Shselasky g_audio_detach(dev); 356253544Shselasky 357253544Shselasky return (ENXIO); /* error */ 358253544Shselasky} 359253544Shselasky 360253544Shselaskystatic int 361253544Shselaskyg_audio_detach(device_t dev) 362253544Shselasky{ 363253544Shselasky struct g_audio_softc *sc = device_get_softc(dev); 364253544Shselasky 365253544Shselasky DPRINTF("\n"); 366253544Shselasky 367253544Shselasky mtx_lock(&sc->sc_mtx); 368253544Shselasky usb_callout_stop(&sc->sc_callout); 369253544Shselasky usb_callout_stop(&sc->sc_watchdog); 370253544Shselasky mtx_unlock(&sc->sc_mtx); 371253544Shselasky 372253544Shselasky usbd_transfer_unsetup(sc->sc_xfer, G_AUDIO_N_TRANSFER); 373253544Shselasky 374253544Shselasky usb_callout_drain(&sc->sc_callout); 375253544Shselasky usb_callout_drain(&sc->sc_watchdog); 376253544Shselasky 377253544Shselasky mtx_destroy(&sc->sc_mtx); 378253544Shselasky 379253544Shselasky return (0); 380253544Shselasky} 381253544Shselasky 382253544Shselasky 383253544Shselaskystatic int32_t 384253544Shselaskyg_noise(struct g_audio_softc *sc) 385253544Shselasky{ 386253544Shselasky uint32_t temp; 387253544Shselasky const uint32_t prime = 0xFFFF1D; 388253544Shselasky 389253544Shselasky if (sc->sc_noise_rem & 1) { 390253544Shselasky sc->sc_noise_rem += prime; 391253544Shselasky } 392253544Shselasky sc->sc_noise_rem /= 2; 393253544Shselasky 394253544Shselasky temp = sc->sc_noise_rem; 395253544Shselasky 396253544Shselasky /* unsigned to signed conversion */ 397253544Shselasky 398253544Shselasky temp ^= 0x800000; 399253544Shselasky if (temp & 0x800000) { 400253544Shselasky temp |= (-0x800000); 401253544Shselasky } 402253544Shselasky return temp; 403253544Shselasky} 404253544Shselasky 405253544Shselaskystatic void 406253544Shselaskyg_audio_make_samples(struct g_audio_softc *sc, int16_t *ptr, int samples) 407253544Shselasky{ 408253544Shselasky int i; 409253544Shselasky int j; 410253544Shselasky 411253544Shselasky for (i = 0; i != samples; i++) { 412253544Shselasky 413253544Shselasky j = g_noise(sc); 414253544Shselasky 415253544Shselasky if ((sc->sc_state < 0) || (sc->sc_state >= sc->sc_pattern_len)) 416253544Shselasky sc->sc_state = 0; 417253544Shselasky 418253544Shselasky if (sc->sc_pattern_len != 0) { 419253544Shselasky j = (j * sc->sc_pattern[sc->sc_state]) >> 16; 420253544Shselasky sc->sc_state++; 421253544Shselasky } 422253544Shselasky *ptr++ = j / 256; 423253544Shselasky *ptr++ = j / 256; 424253544Shselasky } 425253544Shselasky} 426253544Shselasky 427253544Shselaskystatic void 428253544Shselaskyg_audio_isoc_write_callback(struct usb_xfer *xfer, usb_error_t error) 429253544Shselasky{ 430253544Shselasky struct g_audio_softc *sc = usbd_xfer_softc(xfer); 431253544Shselasky int actlen; 432253544Shselasky int aframes; 433253544Shselasky int nr = (xfer == sc->sc_xfer[G_AUDIO_ISOC0_WR]) ? 0 : 1; 434253544Shselasky int16_t *ptr; 435253544Shselasky int i; 436253544Shselasky 437253544Shselasky usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL); 438253544Shselasky 439253544Shselasky DPRINTF("st=%d aframes=%d actlen=%d bytes\n", 440253544Shselasky USB_GET_STATE(xfer), aframes, actlen); 441253544Shselasky 442253544Shselasky switch (USB_GET_STATE(xfer)) { 443253544Shselasky case USB_ST_TRANSFERRED: 444253544Shselasky 445253544Shselasky sc->sc_throughput += actlen; 446253544Shselasky 447253544Shselasky if (sc->sc_mode == G_AUDIO_MODE_LOOP) 448253544Shselasky break; /* sync with RX */ 449253544Shselasky 450253544Shselasky case USB_ST_SETUP: 451253544Shselaskytr_setup: 452253544Shselasky 453253544Shselasky ptr = sc->sc_data_buf[nr]; 454253544Shselasky 455253544Shselasky if (sc->sc_mode == G_AUDIO_MODE_PATTERN) { 456253544Shselasky 457253544Shselasky for (i = 0; i != G_AUDIO_FRAMES; i++) { 458253544Shselasky 459253544Shselasky usbd_xfer_set_frame_data(xfer, i, ptr, sc->sc_data_len[nr][i]); 460253544Shselasky 461253544Shselasky g_audio_make_samples(sc, ptr, (G_AUDIO_BUFSIZE / G_AUDIO_FRAMES) / 2); 462253544Shselasky 463253544Shselasky ptr += (G_AUDIO_BUFSIZE / G_AUDIO_FRAMES) / 2; 464253544Shselasky } 465253544Shselasky } else if (sc->sc_mode == G_AUDIO_MODE_LOOP) { 466253544Shselasky 467253544Shselasky for (i = 0; i != G_AUDIO_FRAMES; i++) { 468253544Shselasky 469253544Shselasky usbd_xfer_set_frame_data(xfer, i, ptr, sc->sc_data_len[nr][i] & ~3); 470253544Shselasky 471253544Shselasky g_audio_make_samples(sc, ptr, sc->sc_data_len[nr][i] / 4); 472253544Shselasky 473253544Shselasky ptr += (G_AUDIO_BUFSIZE / G_AUDIO_FRAMES) / 2; 474253544Shselasky } 475253544Shselasky } 476253544Shselasky break; 477253544Shselasky 478253544Shselasky default: /* Error */ 479253544Shselasky DPRINTF("error=%s\n", usbd_errstr(error)); 480253544Shselasky 481253544Shselasky if (error != USB_ERR_CANCELLED) { 482253544Shselasky /* try to clear stall first */ 483253544Shselasky usbd_xfer_set_stall(xfer); 484253544Shselasky goto tr_setup; 485253544Shselasky } 486253544Shselasky break; 487253544Shselasky } 488253544Shselasky} 489253544Shselasky 490253544Shselaskystatic void 491253544Shselaskyg_audio_isoc_read_callback(struct usb_xfer *xfer, usb_error_t error) 492253544Shselasky{ 493253544Shselasky struct g_audio_softc *sc = usbd_xfer_softc(xfer); 494253544Shselasky int actlen; 495253544Shselasky int aframes; 496253544Shselasky int nr = (xfer == sc->sc_xfer[G_AUDIO_ISOC0_RD]) ? 0 : 1; 497253544Shselasky int16_t *ptr; 498253544Shselasky int i; 499253544Shselasky 500253544Shselasky usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL); 501253544Shselasky 502253544Shselasky DPRINTF("st=%d aframes=%d actlen=%d bytes\n", 503253544Shselasky USB_GET_STATE(xfer), aframes, actlen); 504253544Shselasky 505253544Shselasky switch (USB_GET_STATE(xfer)) { 506253544Shselasky case USB_ST_TRANSFERRED: 507253544Shselasky 508253544Shselasky sc->sc_throughput += actlen; 509253544Shselasky 510253544Shselasky for (i = 0; i != G_AUDIO_FRAMES; i++) { 511253544Shselasky sc->sc_data_len[nr][i] = usbd_xfer_frame_len(xfer, i); 512253544Shselasky } 513253544Shselasky 514253544Shselasky usbd_transfer_start(sc->sc_xfer[G_AUDIO_ISOC0_WR]); 515253544Shselasky usbd_transfer_start(sc->sc_xfer[G_AUDIO_ISOC1_WR]); 516253544Shselasky 517253544Shselasky break; 518253544Shselasky 519253544Shselasky case USB_ST_SETUP: 520253544Shselaskytr_setup: 521253544Shselasky ptr = sc->sc_data_buf[nr]; 522253544Shselasky 523253544Shselasky for (i = 0; i != G_AUDIO_FRAMES; i++) { 524253544Shselasky 525253544Shselasky usbd_xfer_set_frame_data(xfer, i, ptr, 526253544Shselasky G_AUDIO_BUFSIZE / G_AUDIO_FRAMES); 527253544Shselasky 528253544Shselasky ptr += (G_AUDIO_BUFSIZE / G_AUDIO_FRAMES) / 2; 529253544Shselasky } 530253544Shselasky 531253544Shselasky usbd_transfer_submit(xfer); 532253544Shselasky break; 533253544Shselasky 534253544Shselasky default: /* Error */ 535253544Shselasky DPRINTF("error=%s\n", usbd_errstr(error)); 536253544Shselasky 537253544Shselasky if (error != USB_ERR_CANCELLED) { 538253544Shselasky /* try to clear stall first */ 539253544Shselasky usbd_xfer_set_stall(xfer); 540253544Shselasky goto tr_setup; 541253544Shselasky } 542253544Shselasky break; 543253544Shselasky } 544253544Shselasky} 545253544Shselasky 546253544Shselasky 547253544Shselaskystatic int 548253544Shselaskyg_audio_handle_request(device_t dev, 549253544Shselasky const void *preq, void **pptr, uint16_t *plen, 550253544Shselasky uint16_t offset, uint8_t *pstate) 551253544Shselasky{ 552253544Shselasky struct g_audio_softc *sc = device_get_softc(dev); 553253544Shselasky const struct usb_device_request *req = preq; 554253544Shselasky uint8_t is_complete = *pstate; 555253544Shselasky 556253544Shselasky if (!is_complete) { 557253544Shselasky if ((req->bmRequestType == UT_READ_CLASS_INTERFACE) && 558253544Shselasky (req->bRequest == 0x82 /* get min */ )) { 559253544Shselasky 560253544Shselasky if (offset == 0) { 561253544Shselasky USETW(sc->sc_volume_limit, 0); 562253544Shselasky *plen = 2; 563253544Shselasky *pptr = &sc->sc_volume_limit; 564253544Shselasky } else { 565253544Shselasky *plen = 0; 566253544Shselasky } 567253544Shselasky return (0); 568253544Shselasky } else if ((req->bmRequestType == UT_READ_CLASS_INTERFACE) && 569253544Shselasky (req->bRequest == 0x83 /* get max */ )) { 570253544Shselasky 571253544Shselasky if (offset == 0) { 572253544Shselasky USETW(sc->sc_volume_limit, 0x2000); 573253544Shselasky *plen = 2; 574253544Shselasky *pptr = &sc->sc_volume_limit; 575253544Shselasky } else { 576253544Shselasky *plen = 0; 577253544Shselasky } 578253544Shselasky return (0); 579253544Shselasky } else if ((req->bmRequestType == UT_READ_CLASS_INTERFACE) && 580253544Shselasky (req->bRequest == 0x84 /* get residue */ )) { 581253544Shselasky 582253544Shselasky if (offset == 0) { 583269664Shselasky USETW(sc->sc_volume_limit, 1); 584253544Shselasky *plen = 2; 585253544Shselasky *pptr = &sc->sc_volume_limit; 586253544Shselasky } else { 587253544Shselasky *plen = 0; 588253544Shselasky } 589253544Shselasky return (0); 590269602Shselasky } else if ((req->bmRequestType == UT_READ_CLASS_INTERFACE) && 591269602Shselasky (req->bRequest == 0x81 /* get value */ )) { 592269602Shselasky 593269602Shselasky if (offset == 0) { 594269664Shselasky USETW(sc->sc_volume_setting, 0x2000); 595269602Shselasky *plen = sizeof(sc->sc_volume_setting); 596269602Shselasky *pptr = &sc->sc_volume_setting; 597269602Shselasky } else { 598269602Shselasky *plen = 0; 599269602Shselasky } 600269602Shselasky return (0); 601253544Shselasky } else if ((req->bmRequestType == UT_WRITE_CLASS_INTERFACE) && 602253544Shselasky (req->bRequest == 0x01 /* set value */ )) { 603253544Shselasky 604253544Shselasky if (offset == 0) { 605253544Shselasky *plen = sizeof(sc->sc_volume_setting); 606253544Shselasky *pptr = &sc->sc_volume_setting; 607253544Shselasky } else { 608253544Shselasky *plen = 0; 609253544Shselasky } 610253544Shselasky return (0); 611253544Shselasky } else if ((req->bmRequestType == UT_WRITE_CLASS_ENDPOINT) && 612253544Shselasky (req->bRequest == 0x01 /* set value */ )) { 613253544Shselasky 614253544Shselasky if (offset == 0) { 615253544Shselasky *plen = sizeof(sc->sc_sample_rate); 616253544Shselasky *pptr = &sc->sc_sample_rate; 617253544Shselasky } else { 618253544Shselasky *plen = 0; 619253544Shselasky } 620253544Shselasky return (0); 621253544Shselasky } 622253544Shselasky } 623253544Shselasky return (ENXIO); /* use builtin handler */ 624253544Shselasky} 625