X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=sound%2Fusb%2Fusbaudio.c;h=5aa5fe651a8aaac837e09335ecb1dfa31c073654;hb=07e4ca50a5f82aa6eab52e348059579b250c63db;hp=3eaa08e3e6a658e996e9fcfcf530f3e13fe36716;hpb=6155aff84b98b2aa35eaa4384b539dfbab86afcc;p=linux-2.6 diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 3eaa08e3e6..5aa5fe651a 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -41,10 +41,12 @@ #include #include #include +#include #include #include #include #include +#include #include #include #include @@ -79,7 +81,7 @@ module_param_array(vid, int, NULL, 0444); MODULE_PARM_DESC(vid, "Vendor ID for the USB audio device."); module_param_array(pid, int, NULL, 0444); MODULE_PARM_DESC(pid, "Product ID for the USB audio device."); -module_param(nrpacks, int, 0444); +module_param(nrpacks, int, 0644); MODULE_PARM_DESC(nrpacks, "Max. number of packets per URB."); module_param(async_unlink, bool, 0444); MODULE_PARM_DESC(async_unlink, "Use async unlink mode."); @@ -97,7 +99,7 @@ MODULE_PARM_DESC(async_unlink, "Use async unlink mode."); #define MAX_PACKS 10 #define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ -#define MAX_URBS 5 /* max. 20ms long packets */ +#define MAX_URBS 8 #define SYNC_URBS 4 /* always four urbs for sync */ #define MIN_PACKS_URB 1 /* minimum 1 packet per urb */ @@ -126,11 +128,10 @@ struct audioformat { struct snd_urb_ctx { struct urb *urb; + unsigned int buffer_size; /* size of data buffer, if data URB */ snd_usb_substream_t *subs; int index; /* index for urb array */ int packets; /* number of packets per urb */ - int transfer; /* transferred size */ - char *buf; /* buffer for capture */ }; struct snd_urb_ops { @@ -165,12 +166,11 @@ struct snd_usb_substream { unsigned int curframesize; /* current packet size in frames (for capture) */ unsigned int fill_max: 1; /* fill max packet size always */ unsigned int fmt_type; /* USB audio format type (1-3) */ + unsigned int packs_per_ms; /* packets per millisecond (for playback) */ unsigned int running: 1; /* running status */ - unsigned int hwptr; /* free frame position in the buffer (only for playback) */ unsigned int hwptr_done; /* processed frame position in the buffer */ - unsigned int transfer_sched; /* scheduled frames since last period (for playback) */ unsigned int transfer_done; /* processed frames since last period update */ unsigned long active_mask; /* bitmask of active urbs */ unsigned long unlink_mask; /* bitmask of unlinked urbs */ @@ -178,13 +178,14 @@ struct snd_usb_substream { unsigned int nurbs; /* # urbs */ snd_urb_ctx_t dataurb[MAX_URBS]; /* data urb table */ snd_urb_ctx_t syncurb[SYNC_URBS]; /* sync urb table */ - char syncbuf[SYNC_URBS * 4]; /* sync buffer; it's so small - let's get static */ - char *tmpbuf; /* temporary buffer for playback */ + char *syncbuf; /* sync buffer for all sync URBs */ + dma_addr_t sync_dma; /* DMA address of syncbuf */ u64 formats; /* format bitmasks (all or'ed) */ unsigned int num_formats; /* number of supported audio formats (list) */ struct list_head fmt_list; /* format list */ spinlock_t lock; + struct tasklet_struct start_period_elapsed; /* for start trigger */ struct snd_urb_ops ops; /* callbacks (must be filled at init) */ }; @@ -311,27 +312,17 @@ static int prepare_capture_urb(snd_usb_substream_t *subs, struct urb *urb) { int i, offs; - unsigned long flags; snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context; offs = 0; urb->dev = ctx->subs->dev; /* we need to set this at each time */ - urb->number_of_packets = 0; - spin_lock_irqsave(&subs->lock, flags); for (i = 0; i < ctx->packets; i++) { urb->iso_frame_desc[i].offset = offs; urb->iso_frame_desc[i].length = subs->curpacksize; offs += subs->curpacksize; - urb->number_of_packets++; - subs->transfer_sched += subs->curframesize; - if (subs->transfer_sched >= runtime->period_size) { - subs->transfer_sched -= runtime->period_size; - break; - } } - spin_unlock_irqrestore(&subs->lock, flags); - urb->transfer_buffer = ctx->buf; urb->transfer_buffer_length = offs; + urb->number_of_packets = ctx->packets; #if 0 // for check if (! urb->bandwidth) { int bustime; @@ -359,6 +350,7 @@ static int retire_capture_urb(snd_usb_substream_t *subs, unsigned char *cp; int i; unsigned int stride, len, oldptr; + int period_elapsed = 0; stride = runtime->frame_bits >> 3; @@ -378,6 +370,10 @@ static int retire_capture_urb(snd_usb_substream_t *subs, if (subs->hwptr_done >= runtime->buffer_size) subs->hwptr_done -= runtime->buffer_size; subs->transfer_done += len; + if (subs->transfer_done >= runtime->period_size) { + subs->transfer_done -= runtime->period_size; + period_elapsed = 1; + } spin_unlock_irqrestore(&subs->lock, flags); /* copy a data chunk */ if (oldptr + len > runtime->buffer_size) { @@ -388,15 +384,9 @@ static int retire_capture_urb(snd_usb_substream_t *subs, } else { memcpy(runtime->dma_area + oldptr * stride, cp, len * stride); } - /* update the pointer, call callback if necessary */ - spin_lock_irqsave(&subs->lock, flags); - if (subs->transfer_done >= runtime->period_size) { - subs->transfer_done -= runtime->period_size; - spin_unlock_irqrestore(&subs->lock, flags); - snd_pcm_period_elapsed(subs->pcm_substream); - } else - spin_unlock_irqrestore(&subs->lock, flags); } + if (period_elapsed) + snd_pcm_period_elapsed(subs->pcm_substream); return 0; } @@ -492,12 +482,10 @@ static int retire_playback_sync_urb_hs(snd_usb_substream_t *subs, /* * prepare urb for playback data pipe * - * we copy the data directly from the pcm buffer. - * the current position to be copied is held in hwptr field. - * since a urb can handle only a single linear buffer, if the total - * transferred area overflows the buffer boundary, we cannot send - * it directly from the buffer. thus the data is once copied to - * a temporary buffer and urb points to that. + * Since a URB can handle only a single linear buffer, we must use double + * buffering when the data to be transferred overflows the buffer boundary. + * To avoid inconsistencies when updating hwptr_done, we use double buffering + * for all URBs. */ static int prepare_playback_urb(snd_usb_substream_t *subs, snd_pcm_runtime_t *runtime, @@ -506,6 +494,7 @@ static int prepare_playback_urb(snd_usb_substream_t *subs, int i, stride, offs; unsigned int counts; unsigned long flags; + int period_elapsed = 0; snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context; stride = runtime->frame_bits >> 3; @@ -530,80 +519,85 @@ static int prepare_playback_urb(snd_usb_substream_t *subs, urb->iso_frame_desc[i].length = counts * stride; offs += counts; urb->number_of_packets++; - subs->transfer_sched += counts; - if (subs->transfer_sched >= runtime->period_size) { - subs->transfer_sched -= runtime->period_size; + subs->transfer_done += counts; + if (subs->transfer_done >= runtime->period_size) { + subs->transfer_done -= runtime->period_size; + period_elapsed = 1; if (subs->fmt_type == USB_FORMAT_TYPE_II) { - if (subs->transfer_sched > 0) { - /* FIXME: fill-max mode is not supported yet */ - offs -= subs->transfer_sched; - counts -= subs->transfer_sched; - urb->iso_frame_desc[i].length = counts * stride; - subs->transfer_sched = 0; + if (subs->transfer_done > 0) { + /* FIXME: fill-max mode is not + * supported yet */ + offs -= subs->transfer_done; + counts -= subs->transfer_done; + urb->iso_frame_desc[i].length = + counts * stride; + subs->transfer_done = 0; } i++; if (i < ctx->packets) { /* add a transfer delimiter */ - urb->iso_frame_desc[i].offset = offs * stride; + urb->iso_frame_desc[i].offset = + offs * stride; urb->iso_frame_desc[i].length = 0; urb->number_of_packets++; } + break; } - break; } + /* finish at the frame boundary at/after the period boundary */ + if (period_elapsed && + (i & (subs->packs_per_ms - 1)) == subs->packs_per_ms - 1) + break; } - if (subs->hwptr + offs > runtime->buffer_size) { - /* err, the transferred area goes over buffer boundary. - * copy the data to the temp buffer. - */ - int len; - len = runtime->buffer_size - subs->hwptr; - urb->transfer_buffer = subs->tmpbuf; - memcpy(subs->tmpbuf, runtime->dma_area + subs->hwptr * stride, len * stride); - memcpy(subs->tmpbuf + len * stride, runtime->dma_area, (offs - len) * stride); - subs->hwptr += offs; - subs->hwptr -= runtime->buffer_size; + if (subs->hwptr_done + offs > runtime->buffer_size) { + /* err, the transferred area goes over buffer boundary. */ + unsigned int len = runtime->buffer_size - subs->hwptr_done; + memcpy(urb->transfer_buffer, + runtime->dma_area + subs->hwptr_done * stride, + len * stride); + memcpy(urb->transfer_buffer + len * stride, + runtime->dma_area, + (offs - len) * stride); } else { - /* set the buffer pointer */ - urb->transfer_buffer = runtime->dma_area + subs->hwptr * stride; - subs->hwptr += offs; - if (subs->hwptr == runtime->buffer_size) - subs->hwptr = 0; + memcpy(urb->transfer_buffer, + runtime->dma_area + subs->hwptr_done * stride, + offs * stride); } + subs->hwptr_done += offs; + if (subs->hwptr_done >= runtime->buffer_size) + subs->hwptr_done -= runtime->buffer_size; spin_unlock_irqrestore(&subs->lock, flags); urb->transfer_buffer_length = offs * stride; - ctx->transfer = offs; - + if (period_elapsed) { + if (likely(subs->running)) + snd_pcm_period_elapsed(subs->pcm_substream); + else + tasklet_hi_schedule(&subs->start_period_elapsed); + } return 0; } /* * process after playback data complete - * - * update the current position and call callback if a period is processed. + * - nothing to do */ static int retire_playback_urb(snd_usb_substream_t *subs, snd_pcm_runtime_t *runtime, struct urb *urb) { - unsigned long flags; - snd_urb_ctx_t *ctx = (snd_urb_ctx_t *)urb->context; - - spin_lock_irqsave(&subs->lock, flags); - subs->transfer_done += ctx->transfer; - subs->hwptr_done += ctx->transfer; - ctx->transfer = 0; - if (subs->hwptr_done >= runtime->buffer_size) - subs->hwptr_done -= runtime->buffer_size; - if (subs->transfer_done >= runtime->period_size) { - subs->transfer_done -= runtime->period_size; - spin_unlock_irqrestore(&subs->lock, flags); - snd_pcm_period_elapsed(subs->pcm_substream); - } else - spin_unlock_irqrestore(&subs->lock, flags); return 0; } +/* + * Delay the snd_pcm_period_elapsed() call until after the start trigger + * callback so that we're not longer in the substream's lock. + */ +static void start_period_elapsed(unsigned long data) +{ + snd_usb_substream_t *subs = (snd_usb_substream_t *)data; + snd_pcm_period_elapsed(subs->pcm_substream); +} + /* */ @@ -683,6 +677,42 @@ static void snd_complete_sync_urb(struct urb *urb, struct pt_regs *regs) } +/* get the physical page pointer at the given offset */ +static struct page *snd_pcm_get_vmalloc_page(snd_pcm_substream_t *subs, + unsigned long offset) +{ + void *pageptr = subs->runtime->dma_area + offset; + return vmalloc_to_page(pageptr); +} + +/* allocate virtual buffer; may be called more than once */ +static int snd_pcm_alloc_vmalloc_buffer(snd_pcm_substream_t *subs, size_t size) +{ + snd_pcm_runtime_t *runtime = subs->runtime; + if (runtime->dma_area) { + if (runtime->dma_bytes >= size) + return 0; /* already large enough */ + vfree_nocheck(runtime->dma_area); + } + runtime->dma_area = vmalloc_nocheck(size); + if (! runtime->dma_area) + return -ENOMEM; + runtime->dma_bytes = size; + return 0; +} + +/* free virtual buffer; may be called more than once */ +static int snd_pcm_free_vmalloc_buffer(snd_pcm_substream_t *subs) +{ + snd_pcm_runtime_t *runtime = subs->runtime; + if (runtime->dma_area) { + vfree_nocheck(runtime->dma_area); + runtime->dma_area = NULL; + } + return 0; +} + + /* * unlink active urbs. */ @@ -792,7 +822,7 @@ static int start_urbs(snd_usb_substream_t *subs, snd_pcm_runtime_t *runtime) */ static int wait_clear_urbs(snd_usb_substream_t *subs) { - int timeout = HZ; + unsigned long end_time = jiffies + msecs_to_jiffies(1000); unsigned int i; int alive; @@ -812,7 +842,7 @@ static int wait_clear_urbs(snd_usb_substream_t *subs) break; set_current_state(TASK_UNINTERRUPTIBLE); schedule_timeout(1); - } while (--timeout > 0); + } while (time_before(jiffies, end_time)); if (alive) snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive); return 0; @@ -824,8 +854,14 @@ static int wait_clear_urbs(snd_usb_substream_t *subs) */ static snd_pcm_uframes_t snd_usb_pcm_pointer(snd_pcm_substream_t *substream) { - snd_usb_substream_t *subs = (snd_usb_substream_t *)substream->runtime->private_data; - return subs->hwptr_done; + snd_usb_substream_t *subs; + snd_pcm_uframes_t hwptr_done; + + subs = (snd_usb_substream_t *)substream->runtime->private_data; + spin_lock(&subs->lock); + hwptr_done = subs->hwptr_done; + spin_unlock(&subs->lock); + return hwptr_done; } @@ -858,11 +894,13 @@ static int snd_usb_pcm_trigger(snd_pcm_substream_t *substream, int cmd) static void release_urb_ctx(snd_urb_ctx_t *u) { if (u->urb) { + if (u->buffer_size) + usb_buffer_free(u->subs->dev, u->buffer_size, + u->urb->transfer_buffer, + u->urb->transfer_dma); usb_free_urb(u->urb); u->urb = NULL; } - kfree(u->buf); - u->buf = NULL; } /* @@ -880,8 +918,9 @@ static void release_substream_urbs(snd_usb_substream_t *subs, int force) release_urb_ctx(&subs->dataurb[i]); for (i = 0; i < SYNC_URBS; i++) release_urb_ctx(&subs->syncurb[i]); - kfree(subs->tmpbuf); - subs->tmpbuf = NULL; + usb_buffer_free(subs->dev, SYNC_URBS * 4, + subs->syncbuf, subs->sync_dma); + subs->syncbuf = NULL; subs->nurbs = 0; } @@ -893,7 +932,7 @@ static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_by { unsigned int maxsize, n, i; int is_playback = subs->direction == SNDRV_PCM_STREAM_PLAYBACK; - unsigned int npacks[MAX_URBS], urb_packs, total_packs; + unsigned int npacks[MAX_URBS], urb_packs, total_packs, packs_per_ms; /* calculate the frequency in 16.16 format */ if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) @@ -920,24 +959,40 @@ static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_by else subs->curpacksize = maxsize; - if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL) - urb_packs = nrpacks; + if (snd_usb_get_speed(subs->dev) == USB_SPEED_HIGH) + packs_per_ms = 8 >> subs->datainterval; else - urb_packs = (nrpacks * 8) >> subs->datainterval; + packs_per_ms = 1; + subs->packs_per_ms = packs_per_ms; - /* allocate a temporary buffer for playback */ if (is_playback) { - subs->tmpbuf = kmalloc(maxsize * urb_packs, GFP_KERNEL); - if (! subs->tmpbuf) { - snd_printk(KERN_ERR "cannot malloc tmpbuf\n"); - return -ENOMEM; - } - } + urb_packs = nrpacks; + urb_packs = max(urb_packs, (unsigned int)MIN_PACKS_URB); + urb_packs = min(urb_packs, (unsigned int)MAX_PACKS); + } else + urb_packs = 1; + urb_packs *= packs_per_ms; /* decide how many packets to be used */ - total_packs = (period_bytes + maxsize - 1) / maxsize; - if (total_packs < 2 * MIN_PACKS_URB) - total_packs = 2 * MIN_PACKS_URB; + if (is_playback) { + unsigned int minsize; + /* determine how small a packet can be */ + minsize = (subs->freqn >> (16 - subs->datainterval)) + * (frame_bits >> 3); + /* with sync from device, assume it can be 12% lower */ + if (subs->syncpipe) + minsize -= minsize >> 3; + minsize = max(minsize, 1u); + total_packs = (period_bytes + minsize - 1) / minsize; + /* round up to multiple of packs_per_ms */ + total_packs = (total_packs + packs_per_ms - 1) + & ~(packs_per_ms - 1); + /* we need at least two URBs for queueing */ + if (total_packs < 2 * MIN_PACKS_URB * packs_per_ms) + total_packs = 2 * MIN_PACKS_URB * packs_per_ms; + } else { + total_packs = MAX_URBS * urb_packs; + } subs->nurbs = (total_packs + urb_packs - 1) / urb_packs; if (subs->nurbs > MAX_URBS) { /* too much... */ @@ -956,7 +1011,7 @@ static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_by subs->nurbs = 2; npacks[0] = (total_packs + 1) / 2; npacks[1] = total_packs - npacks[0]; - } else if (npacks[subs->nurbs-1] < MIN_PACKS_URB) { + } else if (npacks[subs->nurbs-1] < MIN_PACKS_URB * packs_per_ms) { /* the last packet is too small.. */ if (subs->nurbs > 2) { /* merge to the first one */ @@ -975,27 +1030,20 @@ static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_by snd_urb_ctx_t *u = &subs->dataurb[i]; u->index = i; u->subs = subs; - u->transfer = 0; u->packets = npacks[i]; + u->buffer_size = maxsize * u->packets; if (subs->fmt_type == USB_FORMAT_TYPE_II) u->packets++; /* for transfer delimiter */ - if (! is_playback) { - /* allocate a capture buffer per urb */ - u->buf = kmalloc(maxsize * u->packets, GFP_KERNEL); - if (! u->buf) { - release_substream_urbs(subs, 0); - return -ENOMEM; - } - } u->urb = usb_alloc_urb(u->packets, GFP_KERNEL); - if (! u->urb) { - release_substream_urbs(subs, 0); - return -ENOMEM; - } - u->urb->dev = subs->dev; + if (! u->urb) + goto out_of_memory; + u->urb->transfer_buffer = + usb_buffer_alloc(subs->dev, u->buffer_size, GFP_KERNEL, + &u->urb->transfer_dma); + if (! u->urb->transfer_buffer) + goto out_of_memory; u->urb->pipe = subs->datapipe; - u->urb->transfer_flags = URB_ISO_ASAP; - u->urb->number_of_packets = u->packets; + u->urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; u->urb->interval = 1 << subs->datainterval; u->urb->context = u; u->urb->complete = snd_usb_complete_callback(snd_complete_urb); @@ -1003,21 +1051,24 @@ static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_by if (subs->syncpipe) { /* allocate and initialize sync urbs */ + subs->syncbuf = usb_buffer_alloc(subs->dev, SYNC_URBS * 4, + GFP_KERNEL, &subs->sync_dma); + if (! subs->syncbuf) + goto out_of_memory; for (i = 0; i < SYNC_URBS; i++) { snd_urb_ctx_t *u = &subs->syncurb[i]; u->index = i; u->subs = subs; u->packets = 1; u->urb = usb_alloc_urb(1, GFP_KERNEL); - if (! u->urb) { - release_substream_urbs(subs, 0); - return -ENOMEM; - } + if (! u->urb) + goto out_of_memory; u->urb->transfer_buffer = subs->syncbuf + i * 4; + u->urb->transfer_dma = subs->sync_dma + i * 4; u->urb->transfer_buffer_length = 4; - u->urb->dev = subs->dev; u->urb->pipe = subs->syncpipe; - u->urb->transfer_flags = URB_ISO_ASAP; + u->urb->transfer_flags = URB_ISO_ASAP | + URB_NO_TRANSFER_DMA_MAP; u->urb->number_of_packets = 1; u->urb->interval = 1 << subs->syncinterval; u->urb->context = u; @@ -1025,6 +1076,10 @@ static int init_substream_urbs(snd_usb_substream_t *subs, unsigned int period_by } } return 0; + +out_of_memory: + release_substream_urbs(subs, 0); + return -ENOMEM; } @@ -1293,7 +1348,8 @@ static int snd_usb_hw_params(snd_pcm_substream_t *substream, unsigned int channels, rate, format; int ret, changed; - ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); + ret = snd_pcm_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); if (ret < 0) return ret; @@ -1349,7 +1405,7 @@ static int snd_usb_hw_free(snd_pcm_substream_t *substream) subs->cur_rate = 0; subs->period_bytes = 0; release_substream_urbs(subs, 0); - return snd_pcm_lib_free_pages(substream); + return snd_pcm_free_vmalloc_buffer(substream); } /* @@ -1372,9 +1428,7 @@ static int snd_usb_pcm_prepare(snd_pcm_substream_t *substream) subs->curframesize = bytes_to_frames(runtime, subs->curpacksize); /* reset the pointer */ - subs->hwptr = 0; subs->hwptr_done = 0; - subs->transfer_sched = 0; subs->transfer_done = 0; subs->phase = 0; @@ -1390,7 +1444,7 @@ static snd_pcm_hardware_t snd_usb_playback = .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID), - .buffer_bytes_max = (128*1024), + .buffer_bytes_max = (256*1024), .period_bytes_min = 64, .period_bytes_max = (128*1024), .periods_min = 2, @@ -1402,7 +1456,7 @@ static snd_pcm_hardware_t snd_usb_capture = .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID), - .buffer_bytes_max = (128*1024), + .buffer_bytes_max = (256*1024), .period_bytes_min = 64, .period_bytes_max = (128*1024), .periods_min = 2, @@ -1794,6 +1848,7 @@ static snd_pcm_ops_t snd_usb_playback_ops = { .prepare = snd_usb_pcm_prepare, .trigger = snd_usb_pcm_trigger, .pointer = snd_usb_pcm_pointer, + .page = snd_pcm_get_vmalloc_page, }; static snd_pcm_ops_t snd_usb_capture_ops = { @@ -1805,6 +1860,7 @@ static snd_pcm_ops_t snd_usb_capture_ops = { .prepare = snd_usb_pcm_prepare, .trigger = snd_usb_pcm_trigger, .pointer = snd_usb_pcm_pointer, + .page = snd_pcm_get_vmalloc_page, }; @@ -2021,6 +2077,9 @@ static void init_substream(snd_usb_stream_t *as, int stream, struct audioformat INIT_LIST_HEAD(&subs->fmt_list); spin_lock_init(&subs->lock); + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + tasklet_init(&subs->start_period_elapsed, start_period_elapsed, + (unsigned long)subs); subs->stream = as; subs->direction = stream; @@ -2029,10 +2088,6 @@ static void init_substream(snd_usb_stream_t *as, int stream, struct audioformat subs->ops = audio_urb_ops[stream]; else subs->ops = audio_urb_ops_high_speed[stream]; - snd_pcm_lib_preallocate_pages(as->pcm->streams[stream].substream, - SNDRV_DMA_TYPE_CONTINUOUS, - snd_dma_continuous_data(GFP_KERNEL), - 64 * 1024, 128 * 1024); snd_pcm_set_ops(as->pcm, stream, stream == SNDRV_PCM_STREAM_PLAYBACK ? &snd_usb_playback_ops : &snd_usb_capture_ops); @@ -2078,7 +2133,6 @@ static void snd_usb_audio_pcm_free(snd_pcm_t *pcm) snd_usb_stream_t *stream = pcm->private_data; if (stream) { stream->pcm = NULL; - snd_pcm_lib_preallocate_free_for_all(pcm); snd_usb_audio_stream_free(stream); } } @@ -2735,7 +2789,8 @@ static int create_standard_interface_quirk(snd_usb_audio_t *chip, * to detect the sample rate is by looking at wMaxPacketSize. */ static int create_ua700_ua25_quirk(snd_usb_audio_t *chip, - struct usb_interface *iface) + struct usb_interface *iface, + const snd_usb_audio_quirk_t *quirk) { static const struct audioformat ua_format = { .format = SNDRV_PCM_FORMAT_S24_3LE, @@ -2826,7 +2881,9 @@ static int create_ua700_ua25_quirk(snd_usb_audio_t *chip, /* * Create a stream for an Edirol UA-1000 interface. */ -static int create_ua1000_quirk(snd_usb_audio_t *chip, struct usb_interface *iface) +static int create_ua1000_quirk(snd_usb_audio_t *chip, + struct usb_interface *iface, + const snd_usb_audio_quirk_t *quirk) { static const struct audioformat ua1000_format = { .format = SNDRV_PCM_FORMAT_S32_LE, @@ -2903,6 +2960,13 @@ static int create_composite_quirk(snd_usb_audio_t *chip, return 0; } +static int ignore_interface_quirk(snd_usb_audio_t *chip, + struct usb_interface *iface, + const snd_usb_audio_quirk_t *quirk) +{ + return 0; +} + /* * boot quirks @@ -2965,28 +3029,28 @@ static int snd_usb_create_quirk(snd_usb_audio_t *chip, struct usb_interface *iface, const snd_usb_audio_quirk_t *quirk) { - switch (quirk->type) { - case QUIRK_MIDI_FIXED_ENDPOINT: - case QUIRK_MIDI_YAMAHA: - case QUIRK_MIDI_MIDIMAN: - case QUIRK_MIDI_NOVATION: - case QUIRK_MIDI_RAW: - case QUIRK_MIDI_EMAGIC: - return snd_usb_create_midi_interface(chip, iface, quirk); - case QUIRK_COMPOSITE: - return create_composite_quirk(chip, iface, quirk); - case QUIRK_AUDIO_FIXED_ENDPOINT: - return create_fixed_stream_quirk(chip, iface, quirk); - case QUIRK_AUDIO_STANDARD_INTERFACE: - case QUIRK_MIDI_STANDARD_INTERFACE: - return create_standard_interface_quirk(chip, iface, quirk); - case QUIRK_AUDIO_EDIROL_UA700_UA25: - return create_ua700_ua25_quirk(chip, iface); - case QUIRK_AUDIO_EDIROL_UA1000: - return create_ua1000_quirk(chip, iface); - case QUIRK_IGNORE_INTERFACE: - return 0; - default: + typedef int (*quirk_func_t)(snd_usb_audio_t *, struct usb_interface *, + const snd_usb_audio_quirk_t *); + static const quirk_func_t quirk_funcs[] = { + [QUIRK_IGNORE_INTERFACE] = ignore_interface_quirk, + [QUIRK_COMPOSITE] = create_composite_quirk, + [QUIRK_MIDI_STANDARD_INTERFACE] = snd_usb_create_midi_interface, + [QUIRK_MIDI_FIXED_ENDPOINT] = snd_usb_create_midi_interface, + [QUIRK_MIDI_YAMAHA] = snd_usb_create_midi_interface, + [QUIRK_MIDI_MIDIMAN] = snd_usb_create_midi_interface, + [QUIRK_MIDI_NOVATION] = snd_usb_create_midi_interface, + [QUIRK_MIDI_RAW] = snd_usb_create_midi_interface, + [QUIRK_MIDI_EMAGIC] = snd_usb_create_midi_interface, + [QUIRK_MIDI_MIDITECH] = snd_usb_create_midi_interface, + [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_interface_quirk, + [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk, + [QUIRK_AUDIO_EDIROL_UA700_UA25] = create_ua700_ua25_quirk, + [QUIRK_AUDIO_EDIROL_UA1000] = create_ua1000_quirk, + }; + + if (quirk->type < QUIRK_TYPE_COUNT) { + return quirk_funcs[quirk->type](chip, iface, quirk); + } else { snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type); return -ENXIO; }