Re-add the sample-rate quirk originally implemented by Dmitry Panchenko for the DJM-900NXS2 but for the DJM-750. This commit only adds it for the DJM-750 since I can only verify that it is absolutely required for this device. Other models may need this patch but I'm hesitant to add them as I cannot test.

The 'wIndex' is taken from `fmt->sync_ep` as different devices have a different sync endpoint which is specified in 'quirks-table.h'. Adding other devices should only require adding an additional case.

Signed-off-by: Olivia Mackintosh livvy@base.nu --- sound/usb/quirks.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index e196e364cef1..517346054fb7 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1470,6 +1470,22 @@ static void set_format_emu_quirk(struct snd_usb_substream *subs, subs->pkt_offset_adj = (emu_samplerate_id >= EMU_QUIRK_SR_176400HZ) ? 4 : 0; }

+static int pioneer_djm_set_format_quirk(struct snd_usb_substream *subs, + const struct audioformat *fmt) +{ + unsigned int cur_rate = subs->data_endpoint->cur_rate; + u8 sr[3]; + // Convert to little endian + sr[0] = cur_rate&0xff; + sr[1] = (cur_rate>>8)&0xff; + sr[2] = (cur_rate>>16)&0xff; + usb_set_interface(subs->dev, 0, 1); + snd_usb_ctl_msg(subs->stream->chip->dev, + usb_rcvctrlpipe(subs->stream->chip->dev, 0), + 0x01, 0x22, 0x0100, fmt->sync_ep, &sr, 0x0003); + return 0; +} + void snd_usb_set_format_quirk(struct snd_usb_substream *subs, const struct audioformat *fmt) { @@ -1483,6 +1499,9 @@ void snd_usb_set_format_quirk(struct snd_usb_substream *subs, case USB_ID(0x534d, 0x2109): /* MacroSilicon MS2109 */ subs->stream_offset_adj = 2; break; + case USB_ID(0x08e4, 0x017f): /* Pioneer DJM-750 */ + pioneer_djm_set_format_quirk(subs, fmt); + break; } }