1030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese/* 2030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * Copyright (C) 2007, 2008 Karsten Wiese <fzu@wemgehoertderstaat.de> 3030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * 4030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * This program is free software; you can redistribute it and/or modify it 5030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * under the terms of the GNU General Public License as published by the 6030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * Free Software Foundation; either version 2 of the License, or (at your 7030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * option) any later version. 8030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * 9030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * This program is distributed in the hope that it will be useful, but 10030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 11030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * for more details. 13030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * 14030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * You should have received a copy of the GNU General Public License 15030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * along with this program; if not, write to the Free Software Foundation, 16030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 17030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese */ 18030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 19030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese#include <linux/usb.h> 205a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/gfp.h> 21030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 22030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese#include "usb_stream.h" 23030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 24030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 25030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese/* setup */ 26030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 27030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic unsigned usb_stream_next_packet_size(struct usb_stream_kernel *sk) 28030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 29030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s = sk->s; 30030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->out_phase_peeked = (sk->out_phase & 0xffff) + sk->freqn; 31030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return (sk->out_phase_peeked >> 16) * s->cfg.frame_size; 32030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 33030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 34030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void playback_prep_freqn(struct usb_stream_kernel *sk, struct urb *urb) 35030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 36030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s = sk->s; 37f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese int pack, lb = 0; 38f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese 39f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese for (pack = 0; pack < sk->n_o_ps; pack++) { 40f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese int l = usb_stream_next_packet_size(sk); 41f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese if (s->idle_outsize + lb + l > s->period_size) 42030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto check; 43030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 44030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->out_phase = sk->out_phase_peeked; 45f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese urb->iso_frame_desc[pack].offset = lb; 46030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->iso_frame_desc[pack].length = l; 47f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese lb += l; 48030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 49f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese snd_printdd(KERN_DEBUG "%i\n", lb); 50030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 51030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesecheck: 52030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->number_of_packets = pack; 53f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese urb->transfer_buffer_length = lb; 54f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese s->idle_outsize += lb - s->period_size; 55030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printdd(KERN_DEBUG "idle=%i ul=%i ps=%i\n", s->idle_outsize, 56f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese lb, s->period_size); 57030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 58030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 59030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void init_pipe_urbs(struct usb_stream_kernel *sk, unsigned use_packsize, 60030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb **urbs, char *transfer, 61030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_device *dev, int pipe) 62030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 63030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int u, p; 64030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int maxpacket = use_packsize ? 65030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese use_packsize : usb_maxpacket(dev, pipe, usb_pipeout(pipe)); 66030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int transfer_length = maxpacket * sk->n_o_ps; 67030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 68030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (u = 0; u < USB_STREAM_NURBS; 69030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ++u, transfer += transfer_length) { 70030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *urb = urbs[u]; 71030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_iso_packet_descriptor *desc; 72030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->transfer_flags = URB_ISO_ASAP; 73030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->transfer_buffer = transfer; 74030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->dev = dev; 75030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->pipe = pipe; 76030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->number_of_packets = sk->n_o_ps; 77030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->context = sk; 78030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->interval = 1; 79030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (usb_pipeout(pipe)) 80030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese continue; 81030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 82030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->transfer_buffer_length = transfer_length; 83030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese desc = urb->iso_frame_desc; 84030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese desc->offset = 0; 85030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese desc->length = maxpacket; 86030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (p = 1; p < sk->n_o_ps; ++p) { 87030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese desc[p].offset = desc[p - 1].offset + maxpacket; 88030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese desc[p].length = maxpacket; 89030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 90030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 91030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 92030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 93030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void init_urbs(struct usb_stream_kernel *sk, unsigned use_packsize, 94030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_device *dev, int in_pipe, int out_pipe) 95030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 96030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s = sk->s; 97030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese char *indata = (char *)s + sizeof(*s) + 98030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sizeof(struct usb_stream_packet) * 99030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpackets; 100030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int u; 101030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 102030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (u = 0; u < USB_STREAM_NURBS; ++u) { 103030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->inurb[u] = usb_alloc_urb(sk->n_o_ps, GFP_KERNEL); 104030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->outurb[u] = usb_alloc_urb(sk->n_o_ps, GFP_KERNEL); 105030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 106030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 107030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese init_pipe_urbs(sk, use_packsize, sk->inurb, indata, dev, in_pipe); 108030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese init_pipe_urbs(sk, use_packsize, sk->outurb, sk->write_page, dev, 109030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese out_pipe); 110030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 111030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 112030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 113030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese/* 114030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * convert a sampling rate into our full speed format (fs/1000 in Q16.16) 115030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * this will overflow at approx 524 kHz 116030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese */ 117030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic inline unsigned get_usb_full_speed_rate(unsigned rate) 118030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 119030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return ((rate << 13) + 62) / 125; 120030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 121030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 122030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese/* 123030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * convert a sampling rate into USB high speed format (fs/8000 in Q16.16) 124030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese * this will overflow at approx 4 MHz 125030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese */ 126030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic inline unsigned get_usb_high_speed_rate(unsigned rate) 127030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 128030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return ((rate << 10) + 62) / 125; 129030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 130030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 131030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesevoid usb_stream_free(struct usb_stream_kernel *sk) 132030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 133030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s; 134030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese unsigned u; 135030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 136030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (u = 0; u < USB_STREAM_NURBS; ++u) { 137030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese usb_free_urb(sk->inurb[u]); 138030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->inurb[u] = NULL; 139030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese usb_free_urb(sk->outurb[u]); 140030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->outurb[u] = NULL; 141030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 142030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 143030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s = sk->s; 144030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (!s) 145030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 146030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 147030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese free_pages((unsigned long)sk->write_page, get_order(s->write_size)); 148030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->write_page = NULL; 149030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese free_pages((unsigned long)s, get_order(s->read_size)); 150030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s = NULL; 151030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 152030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 153030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestruct usb_stream *usb_stream_new(struct usb_stream_kernel *sk, 154030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_device *dev, 155030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese unsigned in_endpoint, unsigned out_endpoint, 156030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese unsigned sample_rate, unsigned use_packsize, 157030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese unsigned period_frames, unsigned frame_size) 158030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 159030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int packets, max_packsize; 160030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int in_pipe, out_pipe; 161030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int read_size = sizeof(struct usb_stream); 162030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int write_size; 163030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int usb_frames = dev->speed == USB_SPEED_HIGH ? 8000 : 1000; 164030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int pg; 165030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 166030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese in_pipe = usb_rcvisocpipe(dev, in_endpoint); 167030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese out_pipe = usb_sndisocpipe(dev, out_endpoint); 168030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 169030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese max_packsize = use_packsize ? 170030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese use_packsize : usb_maxpacket(dev, in_pipe, 0); 171030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 172030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese /* 173030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese t_period = period_frames / sample_rate 174030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese iso_packs = t_period / t_iso_frame 175030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese = (period_frames / sample_rate) * (1 / t_iso_frame) 176030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese */ 177030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 178030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese packets = period_frames * usb_frames / sample_rate + 1; 179030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 180030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (dev->speed == USB_SPEED_HIGH) 181030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese packets = (packets + 7) & ~7; 182030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 183030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese read_size += packets * USB_STREAM_URBDEPTH * 184030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese (max_packsize + sizeof(struct usb_stream_packet)); 185030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 186030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese max_packsize = usb_maxpacket(dev, out_pipe, 1); 187030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese write_size = max_packsize * packets * USB_STREAM_URBDEPTH; 188030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 189030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (read_size >= 256*PAGE_SIZE || write_size >= 256*PAGE_SIZE) { 190030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "a size exceeds 128*PAGE_SIZE\n"); 191030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto out; 192030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 193030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 194030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese pg = get_order(read_size); 195030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s = (void *) __get_free_pages(GFP_KERNEL|__GFP_COMP|__GFP_ZERO, pg); 196030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (!sk->s) { 197030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "couldn't __get_free_pages()\n"); 198030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto out; 199030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 200030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->cfg.version = USB_STREAM_INTERFACE_VERSION; 201030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 202030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->read_size = read_size; 203030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 204030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->cfg.sample_rate = sample_rate; 205030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->cfg.frame_size = frame_size; 206030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->n_o_ps = packets; 207030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->inpackets = packets * USB_STREAM_URBDEPTH; 208030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->cfg.period_frames = period_frames; 209030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->period_size = frame_size * period_frames; 210030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 211030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->write_size = write_size; 212030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese pg = get_order(write_size); 213030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 214030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->write_page = 215030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese (void *)__get_free_pages(GFP_KERNEL|__GFP_COMP|__GFP_ZERO, pg); 216030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (!sk->write_page) { 217030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "couldn't __get_free_pages()\n"); 218030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese usb_stream_free(sk); 219030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return NULL; 220030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 221030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 222030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese /* calculate the frequency in 16.16 format */ 223030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (dev->speed == USB_SPEED_FULL) 224030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->freqn = get_usb_full_speed_rate(sample_rate); 225030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese else 226030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->freqn = get_usb_high_speed_rate(sample_rate); 227030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 228030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese init_urbs(sk, use_packsize, dev, in_pipe, out_pipe); 229030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->state = usb_stream_stopped; 230030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wieseout: 231030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return sk->s; 232030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 233030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 234030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 235030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese/* start */ 236030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 237030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic bool balance_check(struct usb_stream_kernel *sk, struct urb *urb) 238030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 239030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese bool r; 240030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (unlikely(urb->status)) { 241030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (urb->status != -ESHUTDOWN && urb->status != -ENOENT) 242030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "status=%i\n", urb->status); 243030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->iso_frame_balance = 0x7FFFFFFF; 244030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return false; 245030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 246030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese r = sk->iso_frame_balance == 0; 247030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (!r) 248030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->i_urb = urb; 249030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return r; 250030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 251030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 252030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic bool balance_playback(struct usb_stream_kernel *sk, struct urb *urb) 253030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 254030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->iso_frame_balance += urb->number_of_packets; 255030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return balance_check(sk, urb); 256030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 257030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 258030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic bool balance_capture(struct usb_stream_kernel *sk, struct urb *urb) 259030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 260030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->iso_frame_balance -= urb->number_of_packets; 261030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return balance_check(sk, urb); 262030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 263030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 264030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void subs_set_complete(struct urb **urbs, void (*complete)(struct urb *)) 265030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 266030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int u; 267030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 268030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (u = 0; u < USB_STREAM_NURBS; u++) { 269030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *urb = urbs[u]; 270030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->complete = complete; 271030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 272030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 273030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 274acc421656b97f09b55acb0938ad5378eefa5aaccRoel Kluinstatic int usb_stream_prepare_playback(struct usb_stream_kernel *sk, 275acc421656b97f09b55acb0938ad5378eefa5aaccRoel Kluin struct urb *inurb) 276030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 277030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s = sk->s; 278030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *io; 279030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_iso_packet_descriptor *id, *od; 280f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese int p = 0, lb = 0, l = 0; 281030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 282030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese io = sk->idle_outurb; 283030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese od = io->iso_frame_desc; 284030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 285f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese for (; s->sync_packet < 0; ++p, ++s->sync_packet) { 286030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *ii = sk->completed_inurb; 287030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id = ii->iso_frame_desc + 288030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ii->number_of_packets + s->sync_packet; 289030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l = id->actual_length; 290030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 291030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese od[p].length = l; 292f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese od[p].offset = lb; 293f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese lb += l; 294030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 295030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 296030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (; 297030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->sync_packet < inurb->number_of_packets && p < sk->n_o_ps; 298030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ++p, ++s->sync_packet) { 299030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l = inurb->iso_frame_desc[s->sync_packet].actual_length; 300030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 301f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese if (s->idle_outsize + lb + l > s->period_size) 302030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto check_ok; 303030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 304030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese od[p].length = l; 305f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese od[p].offset = lb; 306f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese lb += l; 307030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 308030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 309030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesecheck_ok: 310030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->sync_packet -= inurb->number_of_packets; 311f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese if (unlikely(s->sync_packet < -2 || s->sync_packet > 0)) { 312030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "invalid sync_packet = %i;" 313030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese " p=%i nop=%i %i %x %x %x > %x\n", 314030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->sync_packet, p, inurb->number_of_packets, 315f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese s->idle_outsize + lb + l, 316f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese s->idle_outsize, lb, l, 317030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->period_size); 318030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return -1; 319030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 320f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese if (unlikely(lb % s->cfg.frame_size)) { 321030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING"invalid outsize = %i\n", 322f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese lb); 323030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return -1; 324030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 325f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese s->idle_outsize += lb - s->period_size; 326030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese io->number_of_packets = p; 327f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese io->transfer_buffer_length = lb; 328f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese if (s->idle_outsize <= 0) 329f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese return 0; 330f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese 331f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese snd_printk(KERN_WARNING "idle=%i\n", s->idle_outsize); 332f600f6c4824d7e40be370f7e26ab0fbc3f6f911cKarsten Wiese return -1; 333030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 334030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 335030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void prepare_inurb(int number_of_packets, struct urb *iu) 336030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 337030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_iso_packet_descriptor *id; 338030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int p; 339030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 340030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese iu->number_of_packets = number_of_packets; 341030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id = iu->iso_frame_desc; 342030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id->offset = 0; 343030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (p = 0; p < iu->number_of_packets - 1; ++p) 344030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id[p + 1].offset = id[p].offset + id[p].length; 345030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 346030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese iu->transfer_buffer_length = 347030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id[0].length * iu->number_of_packets; 348030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 349030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 350030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic int submit_urbs(struct usb_stream_kernel *sk, 351030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *inurb, struct urb *outurb) 352030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 353030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int err; 354030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese prepare_inurb(sk->idle_outurb->number_of_packets, sk->idle_inurb); 355030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese err = usb_submit_urb(sk->idle_inurb, GFP_ATOMIC); 356030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (err < 0) { 357030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_ERR "%i\n", err); 358030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return err; 359030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 360030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->idle_inurb = sk->completed_inurb; 361030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->completed_inurb = inurb; 362030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese err = usb_submit_urb(sk->idle_outurb, GFP_ATOMIC); 363030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (err < 0) { 364030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_ERR "%i\n", err); 365030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return err; 366030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 367030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->idle_outurb = sk->completed_outurb; 368030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->completed_outurb = outurb; 369030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return 0; 370030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 371030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 372030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese#ifdef DEBUG_LOOP_BACK 373030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese/* 374030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese This loop_back() shows how to read/write the period data. 375030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese */ 376030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void loop_back(struct usb_stream *s) 377030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 378030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese char *i, *o; 379030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int il, ol, l, p; 380030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *iu; 381030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_iso_packet_descriptor *id; 382030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 383030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese o = s->playback1st_to; 384030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ol = s->playback1st_size; 385030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l = 0; 386030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 387030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->insplit_pack >= 0) { 388030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese iu = sk->idle_inurb; 389030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id = iu->iso_frame_desc; 390030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese p = s->insplit_pack; 391030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } else 392030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto second; 393030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wieseloop: 394030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (; p < iu->number_of_packets && l < s->period_size; ++p) { 395030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese i = iu->transfer_buffer + id[p].offset; 396030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese il = id[p].actual_length; 397030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (l + il > s->period_size) 398030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese il = s->period_size - l; 399030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (il <= ol) { 400030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese memcpy(o, i, il); 401030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese o += il; 402030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ol -= il; 403030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } else { 404030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese memcpy(o, i, ol); 405030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese singen_6pack(o, ol); 406030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese o = s->playback_to; 407030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese memcpy(o, i + ol, il - ol); 408030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese o += il - ol; 409030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ol = s->period_size - s->playback1st_size; 410030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 411030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l += il; 412030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 413030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (iu == sk->completed_inurb) { 414030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (l != s->period_size) 415030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese printk(KERN_DEBUG"%s:%i %i\n", __func__, __LINE__, 416030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l/(int)s->cfg.frame_size); 417030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 418030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 419030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 420030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesesecond: 421030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese iu = sk->completed_inurb; 422030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id = iu->iso_frame_desc; 423030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese p = 0; 424030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto loop; 425030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 426030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 427030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese#else 428030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void loop_back(struct usb_stream *s) 429030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 430030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 431030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese#endif 432030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 433030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void stream_idle(struct usb_stream_kernel *sk, 434030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *inurb, struct urb *outurb) 435030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 436030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s = sk->s; 437030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int l, p; 438030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int insize = s->idle_insize; 439030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int urb_size = 0; 440030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 441030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket_split = s->next_inpacket_split; 442030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket_split_at = s->next_inpacket_split_at; 443030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split = -1; 444030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split_at = 0; 445030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 446030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (p = 0; p < inurb->number_of_packets; ++p) { 447030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_iso_packet_descriptor *id = inurb->iso_frame_desc; 448030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l = id[p].actual_length; 449030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (unlikely(l == 0 || id[p].status)) { 450030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "underrun, status=%u\n", 451030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id[p].status); 452030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto err_out; 453030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 454030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket_head++; 455030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket_head %= s->inpackets; 456030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->inpacket_split == -1) 457030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket_split = s->inpacket_head; 458030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 459030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket[s->inpacket_head].offset = 460030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id[p].offset + (inurb->transfer_buffer - (void *)s); 461030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket[s->inpacket_head].length = l; 462030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (insize + l > s->period_size && 463030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split == -1) { 464030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split = s->inpacket_head; 465030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split_at = s->period_size - insize; 466030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 467030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese insize += l; 468030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb_size += l; 469030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 470030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->idle_insize += urb_size - s->period_size; 471030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->idle_insize < 0) { 472030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "%i\n", 473030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese (s->idle_insize)/(int)s->cfg.frame_size); 474030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto err_out; 475030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 476030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->insize_done += urb_size; 477030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 478030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l = s->idle_outsize; 479030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->outpacket[0].offset = (sk->idle_outurb->transfer_buffer - 480030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->write_page) - l; 481030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 482030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (usb_stream_prepare_playback(sk, inurb) < 0) 483030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto err_out; 484030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 485030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->outpacket[0].length = sk->idle_outurb->transfer_buffer_length + l; 486030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->outpacket[1].offset = sk->completed_outurb->transfer_buffer - 487030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->write_page; 488030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 489030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (submit_urbs(sk, inurb, outurb) < 0) 490030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto err_out; 491030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 492030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese loop_back(s); 493030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->periods_done++; 494030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese wake_up_all(&sk->sleep); 495030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 496030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wieseerr_out: 497030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->state = usb_stream_xrun; 498030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese wake_up_all(&sk->sleep); 499030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 500030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 501030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void i_capture_idle(struct urb *urb) 502030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 503030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream_kernel *sk = urb->context; 504030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (balance_capture(sk, urb)) 505030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese stream_idle(sk, urb, sk->i_urb); 506030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 507030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 508030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void i_playback_idle(struct urb *urb) 509030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 510030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream_kernel *sk = urb->context; 511030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (balance_playback(sk, urb)) 512030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese stream_idle(sk, sk->i_urb, urb); 513030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 514030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 515030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void stream_start(struct usb_stream_kernel *sk, 516030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *inurb, struct urb *outurb) 517030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 518030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s = sk->s; 519030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->state >= usb_stream_sync1) { 520030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int l, p, max_diff, max_diff_0; 521030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int urb_size = 0; 522030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese unsigned frames_per_packet, min_frames = 0; 523030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese frames_per_packet = (s->period_size - s->idle_insize); 524030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese frames_per_packet <<= 8; 525030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese frames_per_packet /= 526030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->cfg.frame_size * inurb->number_of_packets; 527030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese frames_per_packet++; 528030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 529030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese max_diff_0 = s->cfg.frame_size; 530030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->cfg.period_frames >= 256) 531030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese max_diff_0 <<= 1; 532030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->cfg.period_frames >= 1024) 533030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese max_diff_0 <<= 1; 534030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese max_diff = max_diff_0; 535030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (p = 0; p < inurb->number_of_packets; ++p) { 536030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int diff; 537030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l = inurb->iso_frame_desc[p].actual_length; 538030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb_size += l; 539030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 540030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese min_frames += frames_per_packet; 541030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese diff = urb_size - 542030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese (min_frames >> 8) * s->cfg.frame_size; 543030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (diff < max_diff) { 544030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printdd(KERN_DEBUG "%i %i %i %i\n", 545030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->insize_done, 546030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb_size / (int)s->cfg.frame_size, 547030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese inurb->number_of_packets, diff); 548030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese max_diff = diff; 549030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 550030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 551030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->idle_insize -= max_diff - max_diff_0; 552030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->idle_insize += urb_size - s->period_size; 553030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->idle_insize < 0) { 55454530bded6ecf22d683423b66fc3cd6dddb249aaTakashi Iwai snd_printk(KERN_WARNING "%i %i %i\n", 555030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->idle_insize, urb_size, s->period_size); 556030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 557030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } else if (s->idle_insize == 0) { 558030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split = 559030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese (s->inpacket_head + 1) % s->inpackets; 560030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split_at = 0; 561030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } else { 562030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese unsigned split = s->inpacket_head; 563030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l = s->idle_insize; 564030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese while (l > s->inpacket[split].length) { 565030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese l -= s->inpacket[split].length; 566030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (split == 0) 567030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese split = s->inpackets - 1; 568030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese else 569030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese split--; 570030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 571030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split = split; 572030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->next_inpacket_split_at = 573030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket[split].length - l; 574030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 575030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 576030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->insize_done += urb_size; 577030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 578030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (usb_stream_prepare_playback(sk, inurb) < 0) 579030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 580030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 581030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } else 582030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese playback_prep_freqn(sk, sk->idle_outurb); 583030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 584030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (submit_urbs(sk, inurb, outurb) < 0) 585030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 586030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 587030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->state == usb_stream_sync1 && s->insize_done > 360000) { 588030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese /* just guesswork ^^^^^^ */ 589030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->state = usb_stream_ready; 590030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese subs_set_complete(sk->inurb, i_capture_idle); 591030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese subs_set_complete(sk->outurb, i_playback_idle); 592030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 593030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 594030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 595030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void i_capture_start(struct urb *urb) 596030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 597030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_iso_packet_descriptor *id = urb->iso_frame_desc; 598030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream_kernel *sk = urb->context; 599030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s = sk->s; 600030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int p; 601030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int empty = 0; 602030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 603030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (urb->status) { 604030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "status=%i\n", urb->status); 605030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 606030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 607030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 608030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (p = 0; p < urb->number_of_packets; ++p) { 609030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int l = id[p].actual_length; 610030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (l < s->cfg.frame_size) { 611030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ++empty; 612030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->state >= usb_stream_sync0) { 613030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING "%i\n", l); 614030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 615030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 616030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 617030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket_head++; 618030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket_head %= s->inpackets; 619030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket[s->inpacket_head].offset = 620030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese id[p].offset + (urb->transfer_buffer - (void *)s); 621030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket[s->inpacket_head].length = l; 622030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 623030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese#ifdef SHOW_EMPTY 624030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (empty) { 625030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese printk(KERN_DEBUG"%s:%i: %i", __func__, __LINE__, 626030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese urb->iso_frame_desc[0].actual_length); 627030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (pack = 1; pack < urb->number_of_packets; ++pack) { 628030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int l = urb->iso_frame_desc[pack].actual_length; 629030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese printk(" %i", l); 630030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 631030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese printk("\n"); 632030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 633030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese#endif 634030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (!empty && s->state < usb_stream_sync1) 635030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ++s->state; 636030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 637030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (balance_capture(sk, urb)) 638030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese stream_start(sk, urb, sk->i_urb); 639030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 640030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 641030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesestatic void i_playback_start(struct urb *urb) 642030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 643030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream_kernel *sk = urb->context; 644030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (balance_playback(sk, urb)) 645030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese stream_start(sk, sk->i_urb, urb); 646030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 647030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 648030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wieseint usb_stream_start(struct usb_stream_kernel *sk) 649030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 650030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_stream *s = sk->s; 651030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int frame = 0, iters = 0; 652030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int u, err; 653030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int try = 0; 654030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 655030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (s->state != usb_stream_stopped) 656030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return -EAGAIN; 657030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 658030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese subs_set_complete(sk->inurb, i_capture_start); 659030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese subs_set_complete(sk->outurb, i_playback_start); 660030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese memset(sk->write_page, 0, s->write_size); 661030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesedotry: 662030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->insize_done = 0; 663030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->idle_insize = 0; 664030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->idle_outsize = 0; 665030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->sync_packet = -1; 666030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese s->inpacket_head = -1; 667030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->iso_frame_balance = 0; 668030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ++try; 669030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (u = 0; u < 2; u++) { 670030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *inurb = sk->inurb[u]; 671030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct urb *outurb = sk->outurb[u]; 672030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese playback_prep_freqn(sk, outurb); 673030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese inurb->number_of_packets = outurb->number_of_packets; 674030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese inurb->transfer_buffer_length = 675030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese inurb->number_of_packets * 676030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese inurb->iso_frame_desc[0].length; 677730580b66c412cd8fbe9c7077ce42c55a85e6281Karsten Wiese 678030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (u == 0) { 679030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int now; 680030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese struct usb_device *dev = inurb->dev; 681030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese frame = usb_get_current_frame_number(dev); 682030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese do { 683030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese now = usb_get_current_frame_number(dev); 684030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese ++iters; 685030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } while (now > -1 && now == frame); 686030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 687030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese err = usb_submit_urb(inurb, GFP_ATOMIC); 688030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (err < 0) { 689030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_ERR"usb_submit_urb(sk->inurb[%i])" 690030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese " returned %i\n", u, err); 691030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return err; 692030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 693030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese err = usb_submit_urb(outurb, GFP_ATOMIC); 694030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (err < 0) { 695030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_ERR"usb_submit_urb(sk->outurb[%i])" 696030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese " returned %i\n", u, err); 697030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return err; 698030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 699730580b66c412cd8fbe9c7077ce42c55a85e6281Karsten Wiese 700030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (inurb->start_frame != outurb->start_frame) { 701030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printd(KERN_DEBUG 702030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese "u[%i] start_frames differ in:%u out:%u\n", 703030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese u, inurb->start_frame, outurb->start_frame); 704030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto check_retry; 705030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 706030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 707030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printdd(KERN_DEBUG "%i %i\n", frame, iters); 708030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese try = 0; 709030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesecheck_retry: 710030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (try) { 711030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese usb_stream_stop(sk); 712030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (try < 5) { 713030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese msleep(1500); 714030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printd(KERN_DEBUG "goto dotry;\n"); 715030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese goto dotry; 716030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 717030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printk(KERN_WARNING"couldn't start" 718030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese " all urbs on the same start_frame.\n"); 719030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return -EFAULT; 720030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 721030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 722030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->idle_inurb = sk->inurb[USB_STREAM_NURBS - 2]; 723030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->idle_outurb = sk->outurb[USB_STREAM_NURBS - 2]; 724030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->completed_inurb = sk->inurb[USB_STREAM_NURBS - 1]; 725030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->completed_outurb = sk->outurb[USB_STREAM_NURBS - 1]; 726030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 727030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese/* wait, check */ 728030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese { 729030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int wait_ms = 3000; 730030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese while (s->state != usb_stream_ready && wait_ms > 0) { 731030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese snd_printdd(KERN_DEBUG "%i\n", s->state); 732030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese msleep(200); 733030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese wait_ms -= 200; 734030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 735030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 736030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 737030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return s->state == usb_stream_ready ? 0 : -EFAULT; 738030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 739030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 740030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 741030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese/* stop */ 742030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese 743030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiesevoid usb_stream_stop(struct usb_stream_kernel *sk) 744030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese{ 745030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese int u; 746030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese if (!sk->s) 747030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese return; 748030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese for (u = 0; u < USB_STREAM_NURBS; ++u) { 749030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese usb_kill_urb(sk->inurb[u]); 750030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese usb_kill_urb(sk->outurb[u]); 751030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese } 752030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese sk->s->state = usb_stream_stopped; 753030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese msleep(400); 754030a07e441296c372f946cd4065b5d831d8dc40cKarsten Wiese} 755