[alsa-devel] [PATCH] sound: usb-audio: Digidesign Mbox 2 Duplex mode support Fixed the tab indentation. Removed unnecessary comments. Put IDs in the right order. Removed support for spdif using a device_setup parameter, now only analogue duplex mode is supported.

5 Jan 2011

From: Damien Zammit damien.zammit@gmail.com
Clemens wrote last year:
...
...
+mbox2_reboot:

           snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),


                   0x85, 0xc0, 0x0001, 0x0000, &bootresponse, 0x0012, 1000);



           if (bootresponse == MBOX2_BOOT_LOADING) {


                   snd_printdd("device not ready, resending boot sequence...\n");


                   goto mbox2_reboot;


           }



...
This could be made a loop.  And it could run infinitely long; maybe you
should add a timeout.  (How long does it usually need?)
I need help to write a loop with a timeout that is RT safe?
The device responds before 5 seconds from zero power to bootup.
---
 sound/usb/midi.c         |   12 ++++
 sound/usb/quirks-table.h |   52 +++++++++++++++++++
 sound/usb/quirks.c       |  125 ++++++++++++++++++++++++++++++++++++++++++++++
 sound/usb/quirks.h       |    5 ++
 sound/usb/usbaudio.h     |    1 +
 5 files changed, 195 insertions(+), 0 deletions(-)

diff --git a/sound/usb/midi.c b/sound/usb/midi.c
index 25bce7e..5dace7e 100644
--- a/sound/usb/midi.c
+++ b/sound/usb/midi.c
@@ -2122,6 +2122,18 @@ int snd_usbmidi_create(struct snd_card *card,
    	umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
    	err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
    	break;
+	case QUIRK_MIDI_MBOX2:
+		/* Digidesign Mbox 2 uses MIDIMAN MIDI protocol */
+		umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops;
+		/*
+		 * We have to make sure that the USB core looks
+		 * again at interface 6 by calling usb_set_interface() on it.
+		 */
+		usb_set_interface(umidi->dev, 6, 0);
+		memcpy(&endpoints[0], quirk->data,
+			sizeof(struct snd_usb_midi_endpoint_info));
+		err = 0;
+		break;
    case QUIRK_MIDI_RAW_BYTES:
    	umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
    	/*
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index ad7079d..2ea3636 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -2477,6 +2477,58 @@ YAMAHA_DEVICE(0x7010, "UB99"),
    }
 },
+/* DIGIDESIGN MBOX 2 */
+{
+       USB_DEVICE(0x0dba, 0x3000),
+       .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+               .vendor_name = "Digidesign",
+               .product_name = "Mbox 2",
+               .ifnum = QUIRK_ANY_INTERFACE,
+               .type = QUIRK_COMPOSITE,
+               .data = (const struct snd_usb_audio_quirk[]) {
+                       {
+                               .ifnum = 0,
+                               .type = QUIRK_IGNORE_INTERFACE
+                       },
+                       {
+                               .ifnum = 1,
+                               .type = QUIRK_IGNORE_INTERFACE
+                       },
+                       {
+                               .ifnum = 2,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                               .ifnum = 3,
+                               .type = QUIRK_IGNORE_INTERFACE
+                       },
+                       {
+                                .ifnum = 4,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                                .ifnum = 5,
+                               .type = QUIRK_AUDIO_STANDARD_INTERFACE
+                       },
+                       {
+                               .ifnum = 6,
+                               .type = QUIRK_MIDI_MBOX2,
+                               .data = & (const struct snd_usb_midi_endpoint_info) {
+                                       .out_ep =  0x02,
+                                       .out_cables = 0x0001,
+                                       .in_ep = 0x81,
+                                       .in_interval = 0x01,
+                                       .in_cables = 0x0001
+                               }
+
+                       },
+                       {
+                               .ifnum = -1
+                       }
+               }
+       }
+},
+
 {
    /*
     * Some USB MIDI devices don't have an audio control interface,
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index cf8bf08..917b991 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -287,6 +287,7 @@ int snd_usb_create_quirk(struct snd_usb_audio *chip,
    	[QUIRK_MIDI_YAMAHA] = create_any_midi_quirk,
    	[QUIRK_MIDI_MIDIMAN] = create_any_midi_quirk,
    	[QUIRK_MIDI_NOVATION] = create_any_midi_quirk,
+		[QUIRK_MIDI_MBOX2] = create_any_midi_quirk,
    	[QUIRK_MIDI_RAW_BYTES] = create_any_midi_quirk,
    	[QUIRK_MIDI_EMAGIC] = create_any_midi_quirk,
    	[QUIRK_MIDI_CME] = create_any_midi_quirk,
@@ -479,6 +480,9 @@ int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
    if (chip->usb_id == USB_ID(0x0763, 0x2003))
    	return audiophile_skip_setting_quirk(chip, iface, altno);
+	if (chip->usb_id == USB_ID(0x0dba, 0x3000))
+        	return mbox2_skip_setting_quirk(chip, iface, altno);
+
    return 0;
 }
@@ -506,6 +510,10 @@ int snd_usb_apply_boot_quirk(struct usb_device *dev,
    if (id == USB_ID(0x0d8c, 0x0102))
    	return snd_usb_cm6206_boot_quirk(dev);
+	/* Digidesign Mbox 2 */
+	if (id == USB_ID(0x0dba, 0x3000))
+		return snd_usb_mbox2_boot_quirk(dev);
+
    /* Access Music VirusTI Desktop */
    if (id == USB_ID(0x133e, 0x0815))
    	return snd_usb_accessmusic_boot_quirk(dev);
@@ -527,6 +535,9 @@ int snd_usb_is_big_endian_format(struct snd_usb_audio *chip, struct audioformat
    	if (chip->setup == 0x00 ||
    	    fp->altsetting==1 || fp->altsetting==2 || fp->altsetting==3)
    		return 1;
+		break;	
+	case USB_ID(0x0dba, 0x3000): /* Digidesign Mbox 2 */
+		return 1;
    }
    return 0;
 }
@@ -594,3 +605,117 @@ void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
    }
 }
+#define MBOX2_FIRMWARE_SIZE    646
+#define MBOX2_BOOT_LOADING     0x01 /* Hard coded into the device */
+#define MBOX2_BOOT_READY       0x02 /* Hard coded into the device */
+
+static int snd_usb_mbox2_boot_quirk(struct usb_device *dev)
+{
+        struct usb_host_config *config = dev->actconfig;
+        int err;
+        u8 enablemagic[3];
+        u8 bootresponse;
+        u8 temp[12];
+        int fwsize;
+
+        if ((fwsize = le16_to_cpu(get_cfg_desc(config)->wTotalLength)) == MBOX2_FIRMWARE_SIZE) {
+                snd_printdd("Sending Digidesign Mbox 2 boot sequence...\n");
+
+                /* From USB Snoop,
+                 *
+                 * SetupPacket = RT RQ VHVL INDX SIZE
+                 * RT = 0xRT Request Type
+                 * RQ = 0xRQ Request
+                 * VHVL = 0xVLVH Value in reverse byte order
+                 * INDX = 0xDXIN Index in reverse byte order
+                 * SIZE = 0xZESI Size in reverse byte order
+                 *
+                 * Magic boot code setup packet: c0 85 01 00 00 00 12 00
+                 *           RQ    RT    VLVH    DXIN                 ZESI
+                 * becomes 0x85, 0xc0, 0x0001, 0x0000, &RETURNDATA, 0x0012, TIMEOUT
+                 * for snd_usb_ctl_msg()
+                 */
+
+mbox2_reboot:
+                snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
+                        0x85, 0xc0, 0x0001, 0x0000, &bootresponse, 0x0012, 1000);
+
+                if (bootresponse == MBOX2_BOOT_LOADING) {
+                        snd_printdd("device not ready, resending boot sequence...\n");
+                        goto mbox2_reboot;
+                }
+
+                if (bootresponse == MBOX2_BOOT_READY) {
+                        snd_printdd("device initialised!\n");
+
+                        err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
+                                &dev->descriptor, sizeof(dev->descriptor));
+                        config = dev->actconfig;
+                        if (err < 0) snd_printdd("error usb_get_descriptor: %d\n", err);
+                        err = usb_reset_configuration(dev);
+                        if (err < 0) snd_printdd("error usb_reset_configuration: %d\n", err);
+                        snd_printdd("mbox2_boot: new boot length = %d\n",
+                                le16_to_cpu(get_cfg_desc(config)->wTotalLength));
+
+                        /* We want 48 kHz mode for now */
+                        enablemagic[0]=0x80;
+                        enablemagic[1]=0xbb;
+                        enablemagic[2]=0x00;
+
+                        /* Send the magic! */
+                        snd_usb_ctl_msg(dev, usb_rcvctrlpipe(dev, 0),
+                                0x01, 0x22, 0x0100, 0x0085, &temp, 0x0003, 1000);
+
+                        snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
+                                0x81, 0xa2, 0x0100, 0x0085, &enablemagic, 0x0003, 1000);
+
+                        snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
+                                0x81, 0xa2, 0x0100, 0x0086, &enablemagic, 0x0003, 1000);
+
+                        snd_usb_ctl_msg(dev, usb_sndctrlpipe(dev, 0),
+                                0x81, 0xa2, 0x0100, 0x0003, &enablemagic, 0x0003, 1000);
+
+        		snd_printk(KERN_INFO "Digidesign Mbox 2: 24 Bit 48kHz Analogue");
+                        
+			return 0; /* Succesful boot */
+                }
+
+                snd_printdd("unknown bootresponse, ignoring device: %d\n",bootresponse);
+                return -ENODEV;
+        }
+        snd_printk("Invalid firmware size: %d\n",fwsize);
+        return -ENODEV;
+}
+
+static int mbox2_skip_setting_quirk(struct snd_usb_audio *chip,
+                                        int iface, int altno)
+{
+        u8 srate[3];
+        u8 temp[12];
+
+        /* Reset ifaces 2,4,5 to 0 altsetting. */
+        usb_set_interface(chip->dev, iface, 0);
+
+        //setup 48k
+        srate[0]=0x80;
+        srate[1]=0xbb;
+        srate[2]=0x00;
+
+        /* Send the magic! */
+        snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0),
+                0x01, 0x22, 0x0100, 0x0085, &temp, 0x0003, 1000);
+
+        snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
+                0x81, 0xa2, 0x0100, 0x0085, &srate, 0x0003, 1000);
+
+        snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
+                0x81, 0xa2, 0x0100, 0x0086, &srate, 0x0003, 1000);
+
+        snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0),
+                0x81, 0xa2, 0x0100, 0x0003, &srate, 0x0003, 1000);
+        
+        if (altno != 3) return 1;
+
+        return 0;
+}
+
diff --git a/sound/usb/quirks.h b/sound/usb/quirks.h
index 03e5e94..13fd3ad 100644
--- a/sound/usb/quirks.h
+++ b/sound/usb/quirks.h
@@ -20,4 +20,9 @@ void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
 int snd_usb_is_big_endian_format(struct snd_usb_audio *chip,
    			 struct audioformat *fp);
+static int mbox2_skip_setting_quirk(struct snd_usb_audio *chip,
+                                       int iface, int altno);
+
+static int snd_usb_mbox2_boot_quirk(struct usb_device *dev);
+
 #endif /* __USBAUDIO_QUIRKS_H */
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index db3eb21..128c3f4 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -70,6 +70,7 @@ enum quirk_type {
    QUIRK_MIDI_YAMAHA,
    QUIRK_MIDI_MIDIMAN,
    QUIRK_MIDI_NOVATION,
+	QUIRK_MIDI_MBOX2,
    QUIRK_MIDI_RAW_BYTES,
    QUIRK_MIDI_EMAGIC,
    QUIRK_MIDI_CME,
-- 
1.6.3.3


    

[alsa-devel] [PATCH] sound: usb-audio: Digidesign Mbox 2 Duplex mode support Fixed the tab indentation. Removed unnecessary comments. Put IDs in the right order. Removed support for spdif using a device_setup parameter, now only analogue duplex mode is supported.

damien.zammit＠gmail.com