ALSA: usb-audio: Move generic DSD raw detection into quirk_flags

The generic DSD raw detection is based on the known allow list, and we
can integrate it into quirk_flags, too.

Link: https://lore.kernel.org/r/20210729074404.19728-4-tiwai@suse.deSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/quirks.c

@@ -1673,29 +1673,9 @@ u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
 			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
 	}
 
-	/* Mostly generic method to detect many DSD-capable implementations -
-	 * from XMOS/Thesycon
-	 */
-	switch (USB_ID_VENDOR(chip->usb_id)) {
-	case 0x152a:  /* Thesycon devices */
-	case 0x20b1:  /* XMOS based devices */
-	case 0x22d9:  /* Oppo */
-	case 0x23ba:  /* Playback Designs */
-	case 0x25ce:  /* Mytek devices */
-	case 0x278b:  /* Rotel? */
-	case 0x292b:  /* Gustard/Ess based devices */
-	case 0x2972:  /* FiiO devices */
-	case 0x2ab6:  /* T+A devices */
-	case 0x3353:  /* Khadas devices */
-	case 0x3842:  /* EVGA */
-	case 0xc502:  /* HiBy devices */
-		if (fp->dsd_raw)
-			return SNDRV_PCM_FMTBIT_DSD_U32_BE;
-		break;
-	default:
-		break;
-
-	}
+	/* Mostly generic method to detect many DSD-capable implementations */
+	if ((chip->quirk_flags & QUIRK_FLAG_DSD_RAW) && fp->dsd_raw)
+		return SNDRV_PCM_FMTBIT_DSD_U32_BE;
 
 	return 0;
 }
@@ -1917,10 +1897,33 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 		   QUIRK_FLAG_CTL_MSG_DELAY | QUIRK_FLAG_IFACE_DELAY),
 	VENDOR_FLG(0x07fd, /* MOTU */
 		   QUIRK_FLAG_VALIDATE_RATES),
+	VENDOR_FLG(0x152a, /* Thesycon devices */
+		   QUIRK_FLAG_DSD_RAW),
 	VENDOR_FLG(0x1de7, /* Phoenix Audio */
 		   QUIRK_FLAG_GET_SAMPLE_RATE),
+	VENDOR_FLG(0x20b1, /* XMOS based devices */
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x22d9, /* Oppo */
+		   QUIRK_FLAG_DSD_RAW),
 	VENDOR_FLG(0x23ba, /* Playback Design */
-		   QUIRK_FLAG_CTL_MSG_DELAY | QUIRK_FLAG_IFACE_DELAY),
+		   QUIRK_FLAG_CTL_MSG_DELAY | QUIRK_FLAG_IFACE_DELAY |
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x25ce, /* Mytek devices */
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x278b, /* Rotel? */
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x292b, /* Gustard/Ess based devices */
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x2972, /* FiiO devices */
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x2ab6, /* T+A devices */
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x3353, /* Khadas devices */
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0x3842, /* EVGA */
+		   QUIRK_FLAG_DSD_RAW),
+	VENDOR_FLG(0xc502, /* HiBy devices */
+		   QUIRK_FLAG_DSD_RAW),
 
 	{} /* terminator */
 };

sound/usb/usbaudio.h

@@ -159,6 +159,8 @@ extern bool snd_usb_skip_validation;
  *  Disable runtime PM autosuspend
  * QUIRK_FLAG_IGNORE_CTL_ERROR:
  *  Ignore errors for mixer access
+ * QUIRK_FLAG_DSD_RAW:
+ *  Support generic DSD raw U32_BE format
  */
 
 #define QUIRK_FLAG_GET_SAMPLE_RATE	(1U << 0)
@@ -176,5 +178,6 @@ extern bool snd_usb_skip_validation;
 #define QUIRK_FLAG_VALIDATE_RATES	(1U << 12)
 #define QUIRK_FLAG_DISABLE_AUTOSUSPEND	(1U << 13)
 #define QUIRK_FLAG_IGNORE_CTL_ERROR	(1U << 14)
+#define QUIRK_FLAG_DSD_RAW		(1U << 15)
 
 #endif /* __USBAUDIO_H */