From ae4b2e2ce3b076164a3904b53c25e7a4c33dfb04 Mon Sep 17 00:00:00 2001 From: hselasky Date: Fri, 12 Aug 2016 08:03:31 +0000 Subject: [PATCH] MFC r301039: Add support for simplex USB MIDI devices, which only provide BULK or INTERRUPT endpoints for moving data in one direction, like the KeyRig 49 from M-Audio. Requested by: Ivan Klymenko git-svn-id: svn://svn.freebsd.org/base/stable/8@303995 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f --- sys/dev/sound/usb/uaudio.c | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-) diff --git a/sys/dev/sound/usb/uaudio.c b/sys/dev/sound/usb/uaudio.c index 19e3dc6e0..c55740311 100644 --- a/sys/dev/sound/usb/uaudio.c +++ b/sys/dev/sound/usb/uaudio.c @@ -660,6 +660,7 @@ static const struct usb_config .endpoint = UE_ADDR_ANY, .direction = UE_DIR_OUT, .bufsize = UMIDI_TX_BUFFER, + .flags = {.no_pipe_ok = 1}, .callback = &umidi_bulk_write_callback, }, @@ -668,7 +669,7 @@ static const struct usb_config .endpoint = UE_ADDR_ANY, .direction = UE_DIR_IN, .bufsize = 4, /* bytes */ - .flags = {.short_xfer_ok = 1,.proxy_buffer = 1,}, + .flags = {.short_xfer_ok = 1,.proxy_buffer = 1,.no_pipe_ok = 1}, .callback = &umidi_bulk_read_callback, }, }; @@ -5747,7 +5748,16 @@ umidi_start_write(struct usb_fifo *fifo) { struct umidi_chan *chan = usb_fifo_softc(fifo); - usbd_transfer_start(chan->xfer[UMIDI_TX_TRANSFER]); + if (chan->xfer[UMIDI_TX_TRANSFER] == NULL) { + uint8_t buf[1]; + int actlen; + do { + /* dump data */ + usb_fifo_get_data_linear(fifo, buf, 1, &actlen, 0); + } while (actlen > 0); + } else { + usbd_transfer_start(chan->xfer[UMIDI_TX_TRANSFER]); + } } static void @@ -5865,6 +5875,11 @@ umidi_probe(device_t dev) DPRINTF("error=%s\n", usbd_errstr(error)); goto detach; } + if (chan->xfer[UMIDI_TX_TRANSFER] == NULL && + chan->xfer[UMIDI_RX_TRANSFER] == NULL) { + DPRINTF("no BULK or INTERRUPT MIDI endpoint(s) found\n"); + goto detach; + } /* * Some USB MIDI device makers couldn't resist using @@ -5878,7 +5893,8 @@ umidi_probe(device_t dev) * and 64-byte maximum packet sizes for full-speed bulk * endpoints and 512 bytes for high-speed bulk endpoints." */ - if (usbd_xfer_maxp_was_clamped(chan->xfer[UMIDI_TX_TRANSFER])) + if (chan->xfer[UMIDI_TX_TRANSFER] != NULL && + usbd_xfer_maxp_was_clamped(chan->xfer[UMIDI_TX_TRANSFER])) chan->single_command = 1; if (chan->single_command != 0) -- 2.42.0