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| author |   Karsten Wiese <fzu@wemgehoertderstaat.de> | 2008-07-30 15:13:29 +0200 |
|---|---|---|
| committer |   Jaroslav Kysela <perex@perex.cz> | 2008-08-01 13:37:12 +0200 |
| commit | 030a07e441296c372f946cd4065b5d831d8dc40c (patch) | |
| tree | 4032eba646f9bf1c6f146adc40b449cf50b59a47 /sound/usb/usbmidi.c | |
| parent | sound: Revert "ALSA: Fix limit of 8 PCM devices in SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE" (diff) | |
| download | linux-dev-030a07e441296c372f946cd4065b5d831d8dc40c.tar.xz linux-dev-030a07e441296c372f946cd4065b5d831d8dc40c.zip | |
ALSA: Add USB US122L driver
Added a new US122L usb-audio driver. This driver works together with a
dedicated alsa-lib plugin.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to '')
| -rw-r--r-- | sound/usb/usbmidi.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c index 6676a177c99e..c0c7770198ad 100644 --- a/sound/usb/usbmidi.c +++ b/sound/usb/usbmidi.c @@ -669,6 +669,42 @@ static struct usb_protocol_ops snd_usbmidi_raw_ops = { .output = snd_usbmidi_raw_output, }; +static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep, + uint8_t *buffer, int buffer_length) +{ + if (buffer_length != 9) + return; + buffer_length = 8; + while (buffer_length && buffer[buffer_length - 1] == 0xFD) + buffer_length--; + if (buffer_length) + snd_usbmidi_input_data(ep, 0, buffer, buffer_length); +} + +static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep) +{ + int count; + + if (!ep->ports[0].active) + return; + count = ep->urb->dev->speed == USB_SPEED_HIGH ? 1 : 2; + count = snd_rawmidi_transmit(ep->ports[0].substream, + ep->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; +} + +static struct usb_protocol_ops snd_usbmidi_122l_ops = { + .input = snd_usbmidi_us122l_input, + .output = snd_usbmidi_us122l_output, +}; + /* * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching. */ @@ -1714,6 +1750,9 @@ int snd_usb_create_midi_interface(struct snd_usb_audio* chip, umidi->usb_protocol_ops = &snd_usbmidi_maudio_broken_running_status_ops; break; + case QUIRK_MIDI_US122L: + umidi->usb_protocol_ops = &snd_usbmidi_122l_ops; + /* fall through */ case QUIRK_MIDI_FIXED_ENDPOINT: memcpy(&endpoints[0], quirk->data, sizeof(struct snd_usb_midi_endpoint_info)); |