diff options
Diffstat (limited to 'sound/usb')
-rw-r--r-- | sound/usb/midi.c | 46 | ||||
-rw-r--r-- | sound/usb/quirks-table.h | 11 | ||||
-rw-r--r-- | sound/usb/quirks.c | 1 | ||||
-rw-r--r-- | sound/usb/usbaudio.h | 1 |
4 files changed, 59 insertions, 0 deletions
diff --git a/sound/usb/midi.c b/sound/usb/midi.c index 7661616..5b4c58c 100644 --- a/sound/usb/midi.c +++ b/sound/usb/midi.c @@ -174,6 +174,8 @@ struct snd_usb_midi_in_endpoint { u8 running_status_length; } ports[0x10]; u8 seen_f5; + bool in_sysex; + u8 last_cin; u8 error_resubmit; int current_port; }; @@ -468,6 +470,39 @@ static void snd_usbmidi_maudio_broken_running_status_input( } /* + * QinHeng CH345 is buggy: every second packet inside a SysEx has not CIN 4 + * but the previously seen CIN, but still with three data bytes. + */ +static void ch345_broken_sysex_input(struct snd_usb_midi_in_endpoint *ep, + uint8_t *buffer, int buffer_length) +{ + unsigned int i, cin, length; + + for (i = 0; i + 3 < buffer_length; i += 4) { + if (buffer[i] == 0 && i > 0) + break; + cin = buffer[i] & 0x0f; + if (ep->in_sysex && + cin == ep->last_cin && + (buffer[i + 1 + (cin == 0x6)] & 0x80) == 0) + cin = 0x4; +#if 0 + if (buffer[i + 1] == 0x90) { + /* + * Either a corrupted running status or a real note-on + * message; impossible to detect reliably. + */ + } +#endif + length = snd_usbmidi_cin_length[cin]; + snd_usbmidi_input_data(ep, 0, &buffer[i + 1], length); + ep->in_sysex = cin == 0x4; + if (!ep->in_sysex) + ep->last_cin = cin; + } +} + +/* * CME protocol: like the standard protocol, but SysEx commands are sent as a * single USB packet preceded by a 0x0F byte. */ @@ -660,6 +695,12 @@ static struct usb_protocol_ops snd_usbmidi_cme_ops = { .output_packet = snd_usbmidi_output_standard_packet, }; +static struct usb_protocol_ops snd_usbmidi_ch345_broken_sysex_ops = { + .input = ch345_broken_sysex_input, + .output = snd_usbmidi_standard_output, + .output_packet = snd_usbmidi_output_standard_packet, +}; + /* * AKAI MPD16 protocol: * @@ -1341,6 +1382,7 @@ static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi *umidi, * Various chips declare a packet size larger than 4 bytes, but * do not actually work with larger packets: */ + case USB_ID(0x0a67, 0x5011): /* Medeli DD305 */ case USB_ID(0x0a92, 0x1020): /* ESI M4U */ case USB_ID(0x1430, 0x474b): /* RedOctane GH MIDI INTERFACE */ case USB_ID(0x15ca, 0x0101): /* Textech USB Midi Cable */ @@ -2378,6 +2420,10 @@ int snd_usbmidi_create(struct snd_card *card, err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); break; + case QUIRK_MIDI_CH345: + umidi->usb_protocol_ops = &snd_usbmidi_ch345_broken_sysex_ops; + err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints); + break; default: dev_err(&umidi->dev->dev, "invalid quirk type %d\n", quirk->type); diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 1a1e2e4..c60a776 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -2829,6 +2829,17 @@ YAMAHA_DEVICE(0x7010, "UB99"), .idProduct = 0x1020, }, +/* QinHeng devices */ +{ + USB_DEVICE(0x1a86, 0x752d), + .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) { + .vendor_name = "QinHeng", + .product_name = "CH345", + .ifnum = 1, + .type = QUIRK_MIDI_CH345 + } +}, + /* KeithMcMillen Stringport */ { USB_DEVICE(0x1f38, 0x0001), diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 5ca80e7..7016ad8 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -538,6 +538,7 @@ int snd_usb_create_quirk(struct snd_usb_audio *chip, [QUIRK_MIDI_CME] = create_any_midi_quirk, [QUIRK_MIDI_AKAI] = create_any_midi_quirk, [QUIRK_MIDI_FTDI] = create_any_midi_quirk, + [QUIRK_MIDI_CH345] = create_any_midi_quirk, [QUIRK_AUDIO_STANDARD_INTERFACE] = create_standard_audio_quirk, [QUIRK_AUDIO_FIXED_ENDPOINT] = create_fixed_stream_quirk, [QUIRK_AUDIO_EDIROL_UAXX] = create_uaxx_quirk, diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index 15a1271..b665d85 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -95,6 +95,7 @@ enum quirk_type { QUIRK_MIDI_AKAI, QUIRK_MIDI_US122L, QUIRK_MIDI_FTDI, + QUIRK_MIDI_CH345, QUIRK_AUDIO_STANDARD_INTERFACE, QUIRK_AUDIO_FIXED_ENDPOINT, QUIRK_AUDIO_EDIROL_UAXX, |