From 468b8fde24d49f5b34e9152981824b9d4ecd1a2e Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 13 Jul 2009 11:39:29 +0200 Subject: sound: usb-audio: Xonar U1 digital output support Add support for the Asus Xonar U1. This device is mostly class compliant, but the digital output requires a vendor-specific request. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c index 4bd3a7a..8452697 100644 --- a/sound/usb/usbmixer.c +++ b/sound/usb/usbmixer.c @@ -86,6 +86,7 @@ struct usb_mixer_interface { u8 rc_buffer[6]; u8 audigy2nx_leds[3]; + u8 xonar_u1_status; }; @@ -2018,6 +2019,58 @@ static void snd_audigy2nx_proc_read(struct snd_info_entry *entry, } } +static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); + + ucontrol->value.integer.value[0] = !!(mixer->xonar_u1_status & 0x02); + return 0; +} + +static int snd_xonar_u1_switch_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol); + u8 old_status, new_status; + int err, changed; + + old_status = mixer->xonar_u1_status; + if (ucontrol->value.integer.value[0]) + new_status = old_status | 0x02; + else + new_status = old_status & ~0x02; + changed = new_status != old_status; + err = snd_usb_ctl_msg(mixer->chip->dev, + usb_sndctrlpipe(mixer->chip->dev, 0), 0x08, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER, + 50, 0, &new_status, 1, 100); + if (err < 0) + return err; + mixer->xonar_u1_status = new_status; + return changed; +} + +static struct snd_kcontrol_new snd_xonar_u1_output_switch = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Digital Playback Switch", + .info = snd_ctl_boolean_mono_info, + .get = snd_xonar_u1_switch_get, + .put = snd_xonar_u1_switch_put, +}; + +static int snd_xonar_u1_controls_create(struct usb_mixer_interface *mixer) +{ + int err; + + err = snd_ctl_add(mixer->chip->card, + snd_ctl_new1(&snd_xonar_u1_output_switch, mixer)); + if (err < 0) + return err; + mixer->xonar_u1_status = 0x05; + return 0; +} + int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, int ignore_error) { @@ -2060,6 +2113,13 @@ int snd_usb_create_mixer(struct snd_usb_audio *chip, int ctrlif, snd_audigy2nx_proc_read); } + if (mixer->chip->usb_id == USB_ID(0x0b05, 0x1739) || + mixer->chip->usb_id == USB_ID(0x0b05, 0x1743)) { + err = snd_xonar_u1_controls_create(mixer); + if (err < 0) + goto _error; + } + err = snd_device_new(chip->card, SNDRV_DEV_LOWLEVEL, mixer, &dev_ops); if (err < 0) goto _error; -- cgit v0.10.2 From 4773d1fb8f37612336d2c929058bf96d3a1624b1 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 13 Jul 2009 13:40:36 +0200 Subject: sound: usb-audio: use multiple input URBs Some newer USB MIDI interfaces use rather small packet sizes, so to get enough bandwidth, we have to be able to receive multiple packets in one USB frame, so we have to use multiple URBs. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c index 2fb35cc..cc17401 100644 --- a/sound/usb/usbmidi.c +++ b/sound/usb/usbmidi.c @@ -62,6 +62,8 @@ */ #define ERROR_DELAY_JIFFIES (HZ / 10) +#define INPUT_URBS 7 + MODULE_AUTHOR("Clemens Ladisch "); MODULE_DESCRIPTION("USB Audio/MIDI helper module"); @@ -143,7 +145,7 @@ struct snd_usb_midi_out_endpoint { struct snd_usb_midi_in_endpoint { struct snd_usb_midi* umidi; - struct urb* urb; + struct urb* urbs[INPUT_URBS]; struct usbmidi_in_port { struct snd_rawmidi_substream *substream; u8 running_status_length; @@ -306,7 +308,7 @@ static void snd_usbmidi_out_tasklet(unsigned long data) static void snd_usbmidi_error_timer(unsigned long data) { struct snd_usb_midi *umidi = (struct snd_usb_midi *)data; - int i; + unsigned int i, j; spin_lock(&umidi->disc_lock); if (umidi->disconnected) { @@ -317,8 +319,10 @@ static void snd_usbmidi_error_timer(unsigned long data) struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in; if (in && in->error_resubmit) { in->error_resubmit = 0; - in->urb->dev = umidi->chip->dev; - snd_usbmidi_submit_urb(in->urb, GFP_ATOMIC); + for (j = 0; j < INPUT_URBS; ++j) { + in->urbs[j]->dev = umidi->chip->dev; + snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC); + } } if (umidi->endpoints[i].out) snd_usbmidi_do_output(umidi->endpoints[i].out); @@ -922,12 +926,16 @@ static struct snd_rawmidi_ops snd_usbmidi_input_ops = { */ static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep) { - if (ep->urb) { - usb_buffer_free(ep->umidi->chip->dev, - ep->urb->transfer_buffer_length, - ep->urb->transfer_buffer, - ep->urb->transfer_dma); - usb_free_urb(ep->urb); + unsigned int i; + + for (i = 0; i < INPUT_URBS; ++i) { + if (ep->urbs[i]) { + usb_buffer_free(ep->umidi->chip->dev, + ep->urbs[i]->transfer_buffer_length, + ep->urbs[i]->transfer_buffer, + ep->urbs[i]->transfer_dma); + usb_free_urb(ep->urbs[i]); + } } kfree(ep); } @@ -943,6 +951,7 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi, void* buffer; unsigned int pipe; int length; + unsigned int i; rep->in = NULL; ep = kzalloc(sizeof(*ep), GFP_KERNEL); @@ -950,30 +959,36 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi, return -ENOMEM; ep->umidi = umidi; - ep->urb = usb_alloc_urb(0, GFP_KERNEL); - if (!ep->urb) { - snd_usbmidi_in_endpoint_delete(ep); - return -ENOMEM; + for (i = 0; i < INPUT_URBS; ++i) { + ep->urbs[i] = usb_alloc_urb(0, GFP_KERNEL); + if (!ep->urbs[i]) { + snd_usbmidi_in_endpoint_delete(ep); + return -ENOMEM; + } } if (ep_info->in_interval) pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep); else pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep); length = usb_maxpacket(umidi->chip->dev, pipe, 0); - buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL, - &ep->urb->transfer_dma); - if (!buffer) { - snd_usbmidi_in_endpoint_delete(ep); - return -ENOMEM; + for (i = 0; i < INPUT_URBS; ++i) { + buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL, + &ep->urbs[i]->transfer_dma); + if (!buffer) { + snd_usbmidi_in_endpoint_delete(ep); + return -ENOMEM; + } + if (ep_info->in_interval) + usb_fill_int_urb(ep->urbs[i], umidi->chip->dev, + pipe, buffer, length, + snd_usbmidi_in_urb_complete, + ep, ep_info->in_interval); + else + usb_fill_bulk_urb(ep->urbs[i], umidi->chip->dev, + pipe, buffer, length, + snd_usbmidi_in_urb_complete, ep); + ep->urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; } - if (ep_info->in_interval) - usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer, - length, snd_usbmidi_in_urb_complete, ep, - ep_info->in_interval); - else - usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer, - length, snd_usbmidi_in_urb_complete, ep); - ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; rep->in = ep; return 0; @@ -1090,7 +1105,7 @@ static void snd_usbmidi_free(struct snd_usb_midi* umidi) void snd_usbmidi_disconnect(struct list_head* p) { struct snd_usb_midi* umidi; - int i; + unsigned int i, j; umidi = list_entry(p, struct snd_usb_midi, list); /* @@ -1111,7 +1126,8 @@ void snd_usbmidi_disconnect(struct list_head* p) umidi->usb_protocol_ops->finish_out_endpoint(ep->out); } if (ep->in) - usb_kill_urb(ep->in->urb); + for (j = 0; j < INPUT_URBS; ++j) + usb_kill_urb(ep->in->urbs[j]); /* free endpoints here; later call can result in Oops */ if (ep->out) { snd_usbmidi_out_endpoint_delete(ep->out); @@ -1692,20 +1708,25 @@ static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi, void snd_usbmidi_input_stop(struct list_head* p) { struct snd_usb_midi* umidi; - int i; + unsigned int i, j; umidi = list_entry(p, struct snd_usb_midi, list); for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; if (ep->in) - usb_kill_urb(ep->in->urb); + for (j = 0; j < INPUT_URBS; ++j) + usb_kill_urb(ep->in->urbs[j]); } } static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep) { - if (ep) { - struct urb* urb = ep->urb; + unsigned int i; + + if (!ep) + return; + for (i = 0; i < INPUT_URBS; ++i) { + struct urb* urb = ep->urbs[i]; urb->dev = ep->umidi->chip->dev; snd_usbmidi_submit_urb(urb, GFP_KERNEL); } -- cgit v0.10.2 From ed4affa53229701be7be4f7f84ba84164135d7e8 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 13 Jul 2009 13:43:59 +0200 Subject: sound: usb-audio: use multiple output URBs Some newer USB MIDI interfaces use rather small packet sizes, so to get enough bandwidth, we have to be able to send multiple packets in one USB frame, so we have to use multiple URBs. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c index cc17401..32d70cc 100644 --- a/sound/usb/usbmidi.c +++ b/sound/usb/usbmidi.c @@ -62,6 +62,7 @@ */ #define ERROR_DELAY_JIFFIES (HZ / 10) +#define OUTPUT_URBS 7 #define INPUT_URBS 7 @@ -92,7 +93,7 @@ struct snd_usb_midi_endpoint; struct usb_protocol_ops { void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int); - void (*output)(struct snd_usb_midi_out_endpoint*); + void (*output)(struct snd_usb_midi_out_endpoint *ep, struct urb *urb); void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t); void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*); void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*); @@ -118,8 +119,11 @@ struct snd_usb_midi { struct snd_usb_midi_out_endpoint { struct snd_usb_midi* umidi; - struct urb* urb; - int urb_active; + struct out_urb_context { + struct urb *urb; + struct snd_usb_midi_out_endpoint *ep; + } urbs[OUTPUT_URBS]; + unsigned int active_urbs; int max_transfer; /* size of urb buffer */ struct tasklet_struct tasklet; @@ -253,10 +257,11 @@ static void snd_usbmidi_in_urb_complete(struct urb* urb) static void snd_usbmidi_out_urb_complete(struct urb* urb) { - struct snd_usb_midi_out_endpoint* ep = urb->context; + struct out_urb_context *context = urb->context; + struct snd_usb_midi_out_endpoint* ep = context->ep; spin_lock(&ep->buffer_lock); - ep->urb_active = 0; + ep->active_urbs &= ~(1 << (context - ep->urbs)); spin_unlock(&ep->buffer_lock); if (urb->status < 0) { int err = snd_usbmidi_urb_error(urb->status); @@ -276,23 +281,37 @@ static void snd_usbmidi_out_urb_complete(struct urb* urb) */ static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep) { - struct urb* urb = ep->urb; + unsigned int urb_index; + struct urb* urb; unsigned long flags; spin_lock_irqsave(&ep->buffer_lock, flags); - if (ep->urb_active || ep->umidi->chip->shutdown) { + if (ep->umidi->chip->shutdown) { spin_unlock_irqrestore(&ep->buffer_lock, flags); return; } - urb->transfer_buffer_length = 0; - ep->umidi->usb_protocol_ops->output(ep); + for (;;) { + urb = NULL; + for (urb_index = 0; urb_index < OUTPUT_URBS; ++urb_index) + if (!(ep->active_urbs & (1 << urb_index))) { + urb = ep->urbs[urb_index].urb; + break; + } + if (!urb) + break; + + urb->transfer_buffer_length = 0; + ep->umidi->usb_protocol_ops->output(ep, urb); + if (urb->transfer_buffer_length == 0) + break; - if (urb->transfer_buffer_length > 0) { dump_urb("sending", urb->transfer_buffer, urb->transfer_buffer_length); urb->dev = ep->umidi->chip->dev; - ep->urb_active = snd_usbmidi_submit_urb(urb, GFP_ATOMIC) >= 0; + if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0) + break; + ep->active_urbs |= 1 << urb_index; } spin_unlock_irqrestore(&ep->buffer_lock, flags); } @@ -334,13 +353,14 @@ static void snd_usbmidi_error_timer(unsigned long data) static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep, const void *data, int len) { - int err; + int err = 0; void *buf = kmemdup(data, len, GFP_KERNEL); if (!buf) return -ENOMEM; dump_urb("sending", buf, len); - err = usb_bulk_msg(ep->umidi->chip->dev, ep->urb->pipe, buf, len, - NULL, 250); + if (ep->urbs[0].urb) + err = usb_bulk_msg(ep->umidi->chip->dev, ep->urbs[0].urb->pipe, + buf, len, NULL, 250); kfree(buf); return err; } @@ -558,9 +578,9 @@ static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port, } } -static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep) +static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep, + struct urb *urb) { - struct urb* urb = ep->urb; int p; /* FIXME: lower-numbered ports can starve higher-numbered ports */ @@ -617,14 +637,15 @@ static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep, snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1); } -static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep) +static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep, + struct urb *urb) { uint8_t* transfer_buffer; int count; if (!ep->ports[0].active) return; - transfer_buffer = ep->urb->transfer_buffer; + transfer_buffer = urb->transfer_buffer; count = snd_rawmidi_transmit(ep->ports[0].substream, &transfer_buffer[2], ep->max_transfer - 2); @@ -634,7 +655,7 @@ static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep) } transfer_buffer[0] = 0; transfer_buffer[1] = count; - ep->urb->transfer_buffer_length = 2 + count; + urb->transfer_buffer_length = 2 + count; } static struct usb_protocol_ops snd_usbmidi_novation_ops = { @@ -652,20 +673,21 @@ static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep, snd_usbmidi_input_data(ep, 0, buffer, buffer_length); } -static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep) +static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep, + struct urb *urb) { int count; if (!ep->ports[0].active) return; count = snd_rawmidi_transmit(ep->ports[0].substream, - ep->urb->transfer_buffer, + urb->transfer_buffer, ep->max_transfer); if (count < 1) { ep->ports[0].active = 0; return; } - ep->urb->transfer_buffer_length = count; + urb->transfer_buffer_length = count; } static struct usb_protocol_ops snd_usbmidi_raw_ops = { @@ -685,23 +707,25 @@ static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep, snd_usbmidi_input_data(ep, 0, buffer, buffer_length); } -static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep) +static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep, + struct urb *urb) { int count; if (!ep->ports[0].active) return; - count = ep->urb->dev->speed == USB_SPEED_HIGH ? 1 : 2; + count = snd_usb_get_speed(ep->umidi->chip->dev) == USB_SPEED_HIGH + ? 1 : 2; count = snd_rawmidi_transmit(ep->ports[0].substream, - ep->urb->transfer_buffer, + urb->transfer_buffer, count); if (count < 1) { ep->ports[0].active = 0; return; } - memset(ep->urb->transfer_buffer + count, 0xFD, 9 - count); - ep->urb->transfer_buffer_length = count; + memset(urb->transfer_buffer + count, 0xFD, 9 - count); + urb->transfer_buffer_length = count; } static struct usb_protocol_ops snd_usbmidi_122l_ops = { @@ -790,10 +814,11 @@ static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep, } } -static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep) +static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep, + struct urb *urb) { int port0 = ep->current_port; - uint8_t* buf = ep->urb->transfer_buffer; + uint8_t* buf = urb->transfer_buffer; int buf_free = ep->max_transfer; int length, i; @@ -833,7 +858,7 @@ static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep) *buf = 0xff; --buf_free; } - ep->urb->transfer_buffer_length = ep->max_transfer - buf_free; + urb->transfer_buffer_length = ep->max_transfer - buf_free; } static struct usb_protocol_ops snd_usbmidi_emagic_ops = { @@ -920,6 +945,14 @@ static struct snd_rawmidi_ops snd_usbmidi_input_ops = { .trigger = snd_usbmidi_input_trigger }; +static void free_urb_and_buffer(struct snd_usb_midi *umidi, struct urb *urb, + unsigned int buffer_length) +{ + usb_buffer_free(umidi->chip->dev, buffer_length, + urb->transfer_buffer, urb->transfer_dma); + usb_free_urb(urb); +} + /* * Frees an input endpoint. * May be called when ep hasn't been initialized completely. @@ -928,15 +961,10 @@ static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep) { unsigned int i; - for (i = 0; i < INPUT_URBS; ++i) { - if (ep->urbs[i]) { - usb_buffer_free(ep->umidi->chip->dev, - ep->urbs[i]->transfer_buffer_length, - ep->urbs[i]->transfer_buffer, - ep->urbs[i]->transfer_dma); - usb_free_urb(ep->urbs[i]); - } - } + for (i = 0; i < INPUT_URBS; ++i) + if (ep->urbs[i]) + free_urb_and_buffer(ep->umidi, ep->urbs[i], + ep->urbs[i]->transfer_buffer_length); kfree(ep); } @@ -1009,12 +1037,12 @@ static unsigned int snd_usbmidi_count_bits(unsigned int x) */ static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint* ep) { - if (ep->urb) { - usb_buffer_free(ep->umidi->chip->dev, ep->max_transfer, - ep->urb->transfer_buffer, - ep->urb->transfer_dma); - usb_free_urb(ep->urb); - } + unsigned int i; + + for (i = 0; i < OUTPUT_URBS; ++i) + if (ep->urbs[i].urb) + free_urb_and_buffer(ep->umidi, ep->urbs[i].urb, + ep->max_transfer); kfree(ep); } @@ -1026,7 +1054,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi, struct snd_usb_midi_endpoint* rep) { struct snd_usb_midi_out_endpoint* ep; - int i; + unsigned int i; unsigned int pipe; void* buffer; @@ -1036,35 +1064,42 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi, return -ENOMEM; ep->umidi = umidi; - ep->urb = usb_alloc_urb(0, GFP_KERNEL); - if (!ep->urb) { - snd_usbmidi_out_endpoint_delete(ep); - return -ENOMEM; + for (i = 0; i < OUTPUT_URBS; ++i) { + ep->urbs[i].urb = usb_alloc_urb(0, GFP_KERNEL); + if (!ep->urbs[i].urb) { + snd_usbmidi_out_endpoint_delete(ep); + return -ENOMEM; + } + ep->urbs[i].ep = ep; } if (ep_info->out_interval) pipe = usb_sndintpipe(umidi->chip->dev, ep_info->out_ep); else pipe = usb_sndbulkpipe(umidi->chip->dev, ep_info->out_ep); if (umidi->chip->usb_id == USB_ID(0x0a92, 0x1020)) /* ESI M4U */ - /* FIXME: we need more URBs to get reasonable bandwidth here: */ ep->max_transfer = 4; else ep->max_transfer = usb_maxpacket(umidi->chip->dev, pipe, 1); - buffer = usb_buffer_alloc(umidi->chip->dev, ep->max_transfer, - GFP_KERNEL, &ep->urb->transfer_dma); - if (!buffer) { - snd_usbmidi_out_endpoint_delete(ep); - return -ENOMEM; + for (i = 0; i < OUTPUT_URBS; ++i) { + buffer = usb_buffer_alloc(umidi->chip->dev, + ep->max_transfer, GFP_KERNEL, + &ep->urbs[i].urb->transfer_dma); + if (!buffer) { + snd_usbmidi_out_endpoint_delete(ep); + return -ENOMEM; + } + if (ep_info->out_interval) + usb_fill_int_urb(ep->urbs[i].urb, umidi->chip->dev, + pipe, buffer, ep->max_transfer, + snd_usbmidi_out_urb_complete, + &ep->urbs[i], ep_info->out_interval); + else + usb_fill_bulk_urb(ep->urbs[i].urb, umidi->chip->dev, + pipe, buffer, ep->max_transfer, + snd_usbmidi_out_urb_complete, + &ep->urbs[i]); + ep->urbs[i].urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; } - if (ep_info->out_interval) - usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer, - ep->max_transfer, snd_usbmidi_out_urb_complete, - ep, ep_info->out_interval); - else - usb_fill_bulk_urb(ep->urb, umidi->chip->dev, - pipe, buffer, ep->max_transfer, - snd_usbmidi_out_urb_complete, ep); - ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; spin_lock_init(&ep->buffer_lock); tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep); @@ -1120,8 +1155,9 @@ void snd_usbmidi_disconnect(struct list_head* p) struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; if (ep->out) tasklet_kill(&ep->out->tasklet); - if (ep->out && ep->out->urb) { - usb_kill_urb(ep->out->urb); + if (ep->out) { + for (j = 0; j < OUTPUT_URBS; ++j) + usb_kill_urb(ep->out->urbs[j].urb); if (umidi->usb_protocol_ops->finish_out_endpoint) umidi->usb_protocol_ops->finish_out_endpoint(ep->out); } -- cgit v0.10.2 From a65dd997b3cf057f6524466cf8dfb8382c132bd5 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 13 Jul 2009 13:48:36 +0200 Subject: sound: usb-audio: add MIDI drain callback When draining, instead of waiting for fifty milliseconds, just wait for the currently active URBs to complete. This cuts the usual waiting time down to one USB frame, or zero in the common case when there is no URB. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c index 32d70cc..0eff19c 100644 --- a/sound/usb/usbmidi.c +++ b/sound/usb/usbmidi.c @@ -45,6 +45,7 @@ #include #include #include +#include #include #include #include @@ -124,9 +125,10 @@ struct snd_usb_midi_out_endpoint { struct snd_usb_midi_out_endpoint *ep; } urbs[OUTPUT_URBS]; unsigned int active_urbs; + unsigned int drain_urbs; int max_transfer; /* size of urb buffer */ struct tasklet_struct tasklet; - + unsigned int next_urb; spinlock_t buffer_lock; struct usbmidi_out_port { @@ -145,6 +147,8 @@ struct snd_usb_midi_out_endpoint { uint8_t data[2]; } ports[0x10]; int current_port; + + wait_queue_head_t drain_wait; }; struct snd_usb_midi_in_endpoint { @@ -259,9 +263,15 @@ static void snd_usbmidi_out_urb_complete(struct urb* urb) { struct out_urb_context *context = urb->context; struct snd_usb_midi_out_endpoint* ep = context->ep; + unsigned int urb_index; spin_lock(&ep->buffer_lock); - ep->active_urbs &= ~(1 << (context - ep->urbs)); + urb_index = context - ep->urbs; + ep->active_urbs &= ~(1 << urb_index); + if (unlikely(ep->drain_urbs)) { + ep->drain_urbs &= ~(1 << urb_index); + wake_up(&ep->drain_wait); + } spin_unlock(&ep->buffer_lock); if (urb->status < 0) { int err = snd_usbmidi_urb_error(urb->status); @@ -291,28 +301,28 @@ static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep) return; } + urb_index = ep->next_urb; for (;;) { - urb = NULL; - for (urb_index = 0; urb_index < OUTPUT_URBS; ++urb_index) - if (!(ep->active_urbs & (1 << urb_index))) { - urb = ep->urbs[urb_index].urb; + if (!(ep->active_urbs & (1 << urb_index))) { + urb = ep->urbs[urb_index].urb; + urb->transfer_buffer_length = 0; + ep->umidi->usb_protocol_ops->output(ep, urb); + if (urb->transfer_buffer_length == 0) break; - } - if (!urb) - break; - - urb->transfer_buffer_length = 0; - ep->umidi->usb_protocol_ops->output(ep, urb); - if (urb->transfer_buffer_length == 0) - break; - dump_urb("sending", urb->transfer_buffer, - urb->transfer_buffer_length); - urb->dev = ep->umidi->chip->dev; - if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0) + dump_urb("sending", urb->transfer_buffer, + urb->transfer_buffer_length); + urb->dev = ep->umidi->chip->dev; + if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0) + break; + ep->active_urbs |= 1 << urb_index; + } + if (++urb_index >= OUTPUT_URBS) + urb_index = 0; + if (urb_index == ep->next_urb) break; - ep->active_urbs |= 1 << urb_index; } + ep->next_urb = urb_index; spin_unlock_irqrestore(&ep->buffer_lock, flags); } @@ -913,6 +923,35 @@ static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, } } +static void snd_usbmidi_output_drain(struct snd_rawmidi_substream *substream) +{ + struct usbmidi_out_port* port = substream->runtime->private_data; + struct snd_usb_midi_out_endpoint *ep = port->ep; + unsigned int drain_urbs; + DEFINE_WAIT(wait); + long timeout = msecs_to_jiffies(50); + + /* + * The substream buffer is empty, but some data might still be in the + * currently active URBs, so we have to wait for those to complete. + */ + spin_lock_irq(&ep->buffer_lock); + drain_urbs = ep->active_urbs; + if (drain_urbs) { + ep->drain_urbs |= drain_urbs; + do { + prepare_to_wait(&ep->drain_wait, &wait, + TASK_UNINTERRUPTIBLE); + spin_unlock_irq(&ep->buffer_lock); + timeout = schedule_timeout(timeout); + spin_lock_irq(&ep->buffer_lock); + drain_urbs &= ep->drain_urbs; + } while (drain_urbs && timeout); + finish_wait(&ep->drain_wait, &wait); + } + spin_unlock_irq(&ep->buffer_lock); +} + static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream) { return 0; @@ -937,6 +976,7 @@ static struct snd_rawmidi_ops snd_usbmidi_output_ops = { .open = snd_usbmidi_output_open, .close = snd_usbmidi_output_close, .trigger = snd_usbmidi_output_trigger, + .drain = snd_usbmidi_output_drain, }; static struct snd_rawmidi_ops snd_usbmidi_input_ops = { @@ -1103,6 +1143,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi, spin_lock_init(&ep->buffer_lock); tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep); + init_waitqueue_head(&ep->drain_wait); for (i = 0; i < 0x10; ++i) if (ep_info->out_cables & (1 << i)) { -- cgit v0.10.2 From 765e8db078e63fdc076fcf6024c15d3b7b955746 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 10 Aug 2009 10:07:35 +0200 Subject: sound: usb-audio: do not make URBs longer than sync packet interval Using more packets in one URB do avoid interrupts does not make sense when we have a sync pipe whose packets generate interrupts more often. Therefore, limit the URB size to the synchronization packet interval. Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 44b9cdc..fa3f7a1 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -1083,6 +1083,8 @@ static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int peri } else urb_packs = 1; urb_packs *= packs_per_ms; + if (subs->syncpipe) + urb_packs = min(urb_packs, 1 << subs->syncinterval); /* decide how many packets to be used */ if (is_playback) { -- cgit v0.10.2 From f1e6d3c5cf86675e54a17a89668aa6685d2ef59d Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 11 Aug 2009 08:15:04 +0200 Subject: ALSA: usb-audio - Fix types taken in min() Fix the compile warning due to different integer types used in min(): sound/usb/usbaudio.c: In function 'init_substream_urbs': sound/usb/usbaudio.c:1087: warning: comparison of distinct pointer types lacks a cast Signed-off-by: Takashi Iwai diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index fa3f7a1..5149c58 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -1084,7 +1084,7 @@ static int init_substream_urbs(struct snd_usb_substream *subs, unsigned int peri urb_packs = 1; urb_packs *= packs_per_ms; if (subs->syncpipe) - urb_packs = min(urb_packs, 1 << subs->syncinterval); + urb_packs = min(urb_packs, 1U << subs->syncinterval); /* decide how many packets to be used */ if (is_playback) { -- cgit v0.10.2