ALSA: usb-audio: Refer to chip->usb_id for quirks and MIDI creation

This is a preliminary patch for the later change to allow a better
quirk ID management.  In the current USB-audio code, there are a few
places looking at usb_device idVendor and idProduct fields directly
even though we have already a static member in snd_usb_audio.usb_id.
This patch modifies such codes to refer to the latter field.

For achieving this, two slightly intensive changes have been done:
- The snd_usb_audio object is set/reset via dev_getdrv() for the given
  USB device; it's needed for minimizing the changes for some existing
  quirks that take only usb_device object.

- __snd_usbmidi_create() is introduced to receive the pre-given usb_id
  argument.  The exported snd_usbmidi_create() is unchanged by calling
  this new function internally.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 21 insertions, 15 deletions

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index a75d9ce..16364d9 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -446,8 +446,9 @@ static int create_uaxx_quirk(struct snd_usb_audio *chip,
 		const struct snd_usb_audio_quirk *quirk =
 			chip->usb_id == USB_ID(0x0582, 0x002b)
 			? &ua700_quirk : &uaxx_quirk;
-		return snd_usbmidi_create(chip->card, iface,
-					  &chip->midi_list, quirk);
+		return __snd_usbmidi_create(chip->card, iface,
+					  &chip->midi_list, quirk,
+					  chip->usb_id);
 	}
 
 	if (altsd->bNumEndpoints != 1)
@@ -974,11 +975,9 @@ int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
 
 int snd_usb_apply_boot_quirk(struct usb_device *dev,
 			     struct usb_interface *intf,
-			     const struct snd_usb_audio_quirk *quirk)
+			     const struct snd_usb_audio_quirk *quirk,
+			     unsigned int id)
 {
-	u32 id = USB_ID(le16_to_cpu(dev->descriptor.idVendor),
-			le16_to_cpu(dev->descriptor.idProduct));
-
 	switch (id) {
 	case USB_ID(0x041e, 0x3000):
 		/* SB Extigy needs special boot-up sequence */
@@ -1182,7 +1181,7 @@ void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep)
 	 * "Playback Design" products send bogus feedback data at the start
 	 * of the stream. Ignore them.
 	 */
-	if ((le16_to_cpu(ep->chip->dev->descriptor.idVendor) == 0x23ba) &&
+	if (USB_ID_VENDOR(ep->chip->usb_id) == 0x23ba &&
 	    ep->type == SND_USB_ENDPOINT_TYPE_SYNC)
 		ep->skip_packets = 4;
 
@@ -1201,11 +1200,15 @@ void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep)
 
 void snd_usb_set_interface_quirk(struct usb_device *dev)
 {
+	struct snd_usb_audio *chip = dev_get_drvdata(&dev->dev);
+
+	if (!chip)
+		return;
 	/*
 	 * "Playback Design" products need a 50ms delay after setting the
 	 * USB interface.
 	 */
-	switch (le16_to_cpu(dev->descriptor.idVendor)) {
+	switch (USB_ID_VENDOR(chip->usb_id)) {
 	case 0x23ba: /* Playback Design */
 	case 0x0644: /* TEAC Corp. */
 		mdelay(50);
@@ -1213,15 +1216,20 @@ void snd_usb_set_interface_quirk(struct usb_device *dev)
 	}
 }
 
+/* quirk applied after snd_usb_ctl_msg(); not applied during boot quirks */
 void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
 			   __u8 request, __u8 requesttype, __u16 value,
 			   __u16 index, void *data, __u16 size)
 {
+	struct snd_usb_audio *chip = dev_get_drvdata(&dev->dev);
+
+	if (!chip)
+		return;
 	/*
 	 * "Playback Design" products need a 20ms delay after each
 	 * class compliant request
 	 */
-	if ((le16_to_cpu(dev->descriptor.idVendor) == 0x23ba) &&
+	if (USB_ID_VENDOR(chip->usb_id) == 0x23ba &&
 	    (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 		mdelay(20);
 
@@ -1229,23 +1237,21 @@ void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
 	 * "TEAC Corp." products need a 20ms delay after each
 	 * class compliant request
 	 */
-	if ((le16_to_cpu(dev->descriptor.idVendor) == 0x0644) &&
+	if (USB_ID_VENDOR(chip->usb_id) == 0x0644 &&
 	    (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 		mdelay(20);
 
 	/* Marantz/Denon devices with USB DAC functionality need a delay
 	 * after each class compliant request
 	 */
-	if (is_marantz_denon_dac(USB_ID(le16_to_cpu(dev->descriptor.idVendor),
-					le16_to_cpu(dev->descriptor.idProduct)))
+	if (is_marantz_denon_dac(chip->usb_id)
 	    && (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 		mdelay(20);
 
 	/* Zoom R16/24 needs a tiny delay here, otherwise requests like
 	 * get/set frequency return as failed despite actually succeeding.
 	 */
-	if ((le16_to_cpu(dev->descriptor.idVendor) == 0x1686) &&
-	    (le16_to_cpu(dev->descriptor.idProduct) == 0x00dd) &&
+	if (chip->usb_id == USB_ID(0x1686, 0x00dd) &&
 	    (requesttype & USB_TYPE_MASK) == USB_TYPE_CLASS)
 		mdelay(1);
 }
@@ -1262,7 +1268,7 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
 					unsigned int sample_bytes)
 {
 	/* Playback Designs */
-	if (le16_to_cpu(chip->dev->descriptor.idVendor) == 0x23ba) {
+	if (USB_ID_VENDOR(chip->usb_id) == 0x23ba) {
 		switch (fp->altsetting) {
 		case 1:
 			fp->dsd_dop = true;