diff options
Diffstat (limited to 'kernel/sound/usb/pcm.c')
-rw-r--r-- | kernel/sound/usb/pcm.c | 138 |
1 files changed, 102 insertions, 36 deletions
diff --git a/kernel/sound/usb/pcm.c b/kernel/sound/usb/pcm.c index b4ef410e5..9245f52d4 100644 --- a/kernel/sound/usb/pcm.c +++ b/kernel/sound/usb/pcm.c @@ -80,7 +80,7 @@ static snd_pcm_uframes_t snd_usb_pcm_pointer(struct snd_pcm_substream *substream unsigned int hwptr_done; subs = (struct snd_usb_substream *)substream->runtime->private_data; - if (subs->stream->chip->shutdown) + if (atomic_read(&subs->stream->chip->shutdown)) return SNDRV_PCM_POS_XRUN; spin_lock(&subs->lock); hwptr_done = subs->hwptr_done; @@ -391,6 +391,20 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, */ attr = fmt->ep_attr & USB_ENDPOINT_SYNCTYPE; + if ((is_playback && (attr != USB_ENDPOINT_SYNC_ASYNC)) || + (!is_playback && (attr != USB_ENDPOINT_SYNC_ADAPTIVE))) { + + /* + * In these modes the notion of sync_endpoint is irrelevant. + * Reset pointers to avoid using stale data from previously + * used settings, e.g. when configuration and endpoints were + * changed + */ + + subs->sync_endpoint = NULL; + subs->data_endpoint->sync_master = NULL; + } + err = set_sync_ep_implicit_fb_quirk(subs, dev, altsd, attr); if (err < 0) return err; @@ -398,10 +412,17 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, if (altsd->bNumEndpoints < 2) return 0; - if ((is_playback && attr != USB_ENDPOINT_SYNC_ASYNC) || + if ((is_playback && (attr == USB_ENDPOINT_SYNC_SYNC || + attr == USB_ENDPOINT_SYNC_ADAPTIVE)) || (!is_playback && attr != USB_ENDPOINT_SYNC_ADAPTIVE)) return 0; + /* + * In case of illegal SYNC_NONE for OUT endpoint, we keep going to see + * if we don't find a sync endpoint, as on M-Audio Transit. In case of + * error fall back to SYNC mode and don't create sync endpoint + */ + /* check sync-pipe endpoint */ /* ... and check descriptor size before accessing bSynchAddress because there is a version of the SB Audigy 2 NX firmware lacking @@ -415,6 +436,8 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, get_endpoint(alts, 1)->bmAttributes, get_endpoint(alts, 1)->bLength, get_endpoint(alts, 1)->bSynchAddress); + if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) + return 0; return -EINVAL; } ep = get_endpoint(alts, 1)->bEndpointAddress; @@ -425,6 +448,8 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, "%d:%d : invalid sync pipe. is_playback %d, ep %02x, bSynchAddress %02x\n", fmt->iface, fmt->altsetting, is_playback, ep, get_endpoint(alts, 0)->bSynchAddress); + if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) + return 0; return -EINVAL; } @@ -436,8 +461,11 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, implicit_fb ? SND_USB_ENDPOINT_TYPE_DATA : SND_USB_ENDPOINT_TYPE_SYNC); - if (!subs->sync_endpoint) + if (!subs->sync_endpoint) { + if (is_playback && attr == USB_ENDPOINT_SYNC_NONE) + return 0; return -EINVAL; + } subs->data_endpoint->sync_master = subs->sync_endpoint; @@ -707,12 +735,11 @@ static int snd_usb_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } - down_read(&subs->stream->chip->shutdown_rwsem); - if (subs->stream->chip->shutdown) - ret = -ENODEV; - else - ret = set_format(subs, fmt); - up_read(&subs->stream->chip->shutdown_rwsem); + ret = snd_usb_lock_shutdown(subs->stream->chip); + if (ret < 0) + return ret; + ret = set_format(subs, fmt); + snd_usb_unlock_shutdown(subs->stream->chip); if (ret < 0) return ret; @@ -735,13 +762,12 @@ static int snd_usb_hw_free(struct snd_pcm_substream *substream) subs->cur_audiofmt = NULL; subs->cur_rate = 0; subs->period_bytes = 0; - down_read(&subs->stream->chip->shutdown_rwsem); - if (!subs->stream->chip->shutdown) { + if (!snd_usb_lock_shutdown(subs->stream->chip)) { stop_endpoints(subs, true); snd_usb_endpoint_deactivate(subs->sync_endpoint); snd_usb_endpoint_deactivate(subs->data_endpoint); + snd_usb_unlock_shutdown(subs->stream->chip); } - up_read(&subs->stream->chip->shutdown_rwsem); return snd_pcm_lib_free_vmalloc_buffer(substream); } @@ -763,11 +789,9 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) return -ENXIO; } - down_read(&subs->stream->chip->shutdown_rwsem); - if (subs->stream->chip->shutdown) { - ret = -ENODEV; - goto unlock; - } + ret = snd_usb_lock_shutdown(subs->stream->chip); + if (ret < 0) + return ret; if (snd_BUG_ON(!subs->data_endpoint)) { ret = -EIO; goto unlock; @@ -816,7 +840,7 @@ static int snd_usb_pcm_prepare(struct snd_pcm_substream *substream) ret = start_endpoints(subs, true); unlock: - up_read(&subs->stream->chip->shutdown_rwsem); + snd_usb_unlock_shutdown(subs->stream->chip); return ret; } @@ -1218,9 +1242,11 @@ static int snd_usb_pcm_close(struct snd_pcm_substream *substream, int direction) stop_endpoints(subs, true); - if (!as->chip->shutdown && subs->interface >= 0) { + if (subs->interface >= 0 && + !snd_usb_lock_shutdown(subs->stream->chip)) { usb_set_interface(subs->dev, subs->interface, 0); subs->interface = -1; + snd_usb_unlock_shutdown(subs->stream->chip); } subs->pcm_substream = NULL; @@ -1357,6 +1383,56 @@ static inline void fill_playback_urb_dsd_dop(struct snd_usb_substream *subs, subs->hwptr_done++; } } + if (subs->hwptr_done >= runtime->buffer_size * stride) + subs->hwptr_done -= runtime->buffer_size * stride; +} + +static void copy_to_urb(struct snd_usb_substream *subs, struct urb *urb, + int offset, int stride, unsigned int bytes) +{ + struct snd_pcm_runtime *runtime = subs->pcm_substream->runtime; + + if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { + /* err, the transferred area goes over buffer boundary. */ + unsigned int bytes1 = + runtime->buffer_size * stride - subs->hwptr_done; + memcpy(urb->transfer_buffer + offset, + runtime->dma_area + subs->hwptr_done, bytes1); + memcpy(urb->transfer_buffer + offset + bytes1, + runtime->dma_area, bytes - bytes1); + } else { + memcpy(urb->transfer_buffer + offset, + runtime->dma_area + subs->hwptr_done, bytes); + } + subs->hwptr_done += bytes; + if (subs->hwptr_done >= runtime->buffer_size * stride) + subs->hwptr_done -= runtime->buffer_size * stride; +} + +static unsigned int copy_to_urb_quirk(struct snd_usb_substream *subs, + struct urb *urb, int stride, + unsigned int bytes) +{ + __le32 packet_length; + int i; + + /* Put __le32 length descriptor at start of each packet. */ + for (i = 0; i < urb->number_of_packets; i++) { + unsigned int length = urb->iso_frame_desc[i].length; + unsigned int offset = urb->iso_frame_desc[i].offset; + + packet_length = cpu_to_le32(length); + offset += i * sizeof(packet_length); + urb->iso_frame_desc[i].offset = offset; + urb->iso_frame_desc[i].length += sizeof(packet_length); + memcpy(urb->transfer_buffer + offset, + &packet_length, sizeof(packet_length)); + copy_to_urb(subs, urb, offset + sizeof(packet_length), + stride, length); + } + /* Adjust transfer size accordingly. */ + bytes += urb->number_of_packets * sizeof(packet_length); + return bytes; } static void prepare_playback_urb(struct snd_usb_substream *subs, @@ -1434,27 +1510,17 @@ static void prepare_playback_urb(struct snd_usb_substream *subs, } subs->hwptr_done += bytes; + if (subs->hwptr_done >= runtime->buffer_size * stride) + subs->hwptr_done -= runtime->buffer_size * stride; } else { /* usual PCM */ - if (subs->hwptr_done + bytes > runtime->buffer_size * stride) { - /* err, the transferred area goes over buffer boundary. */ - unsigned int bytes1 = - runtime->buffer_size * stride - subs->hwptr_done; - memcpy(urb->transfer_buffer, - runtime->dma_area + subs->hwptr_done, bytes1); - memcpy(urb->transfer_buffer + bytes1, - runtime->dma_area, bytes - bytes1); - } else { - memcpy(urb->transfer_buffer, - runtime->dma_area + subs->hwptr_done, bytes); - } - - subs->hwptr_done += bytes; + if (!subs->tx_length_quirk) + copy_to_urb(subs, urb, 0, stride, bytes); + else + bytes = copy_to_urb_quirk(subs, urb, stride, bytes); + /* bytes is now amount of outgoing data */ } - if (subs->hwptr_done >= runtime->buffer_size * stride) - subs->hwptr_done -= runtime->buffer_size * stride; - /* update delay with exact number of samples queued */ runtime->delay = subs->last_delay; runtime->delay += frames; |