staging: line6: Move altsetting to properties

The device type can now be used to determine the altsetting for the
interface.  Drop the conditional logic and make this value a property.
Signed-off-by: NChris Rorvick <chris@rorvick.com>
Reviewed-by: NStefan Hajnoczi <stefanha@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

drivers/staging/line6/driver.c

@@ -67,6 +67,7 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 5,
 	},
 	[LINE6_BASSPODXTLIVE] = {
 		.id = "BassPODxtLive",
@@ -74,6 +75,7 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 1,
 	},
 	[LINE6_BASSPODXTPRO] = {
 		.id = "BassPODxtPro",
@@ -81,16 +83,19 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 5,
 	},
 	[LINE6_GUITARPORT] = {
 		.id = "GuitarPort",
 		.name = "GuitarPort",
 		.capabilities	= LINE6_CAP_PCM,
+		.altsetting = 2,  /* 1..4 seem to be ok */
 	},
 	[LINE6_POCKETPOD] = {
 		.id = "PocketPOD",
 		.name = "Pocket POD",
 		.capabilities	= LINE6_CAP_CONTROL,
+		.altsetting = 0,
 	},
 	[LINE6_PODHD300] = {
 		.id = "PODHD300",
@@ -98,6 +103,7 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 5,
 	},
 	[LINE6_PODHD400] = {
 		.id = "PODHD400",
@@ -105,6 +111,7 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 5,
 	},
 	[LINE6_PODHD500_0] = {
 		.id = "PODHD500",
@@ -112,6 +119,7 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 1,
 	},
 	[LINE6_PODHD500_1] = {
 		.id = "PODHD500",
@@ -119,21 +127,25 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 1,
 	},
 	[LINE6_PODSTUDIO_GX] = {
 		.id = "PODStudioGX",
 		.name = "POD Studio GX",
 		.capabilities	= LINE6_CAP_PCM,
+		.altsetting = 2,  /* 1..4 seem to be ok */
 	},
 	[LINE6_PODSTUDIO_UX1] = {
 		.id = "PODStudioUX1",
 		.name = "POD Studio UX1",
 		.capabilities	= LINE6_CAP_PCM,
+		.altsetting = 2,  /* 1..4 seem to be ok */
 	},
 	[LINE6_PODSTUDIO_UX2] = {
 		.id = "PODStudioUX2",
 		.name = "POD Studio UX2",
 		.capabilities	= LINE6_CAP_PCM,
+		.altsetting = 2,  /* defaults to 44.1kHz, 16-bit */
 	},
 	[LINE6_PODXT] = {
 		.id = "PODxt",
@@ -141,6 +153,7 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 5,
 	},
 	[LINE6_PODXTLIVE_POD] = {
 		.id = "PODxtLive",
@@ -148,6 +161,7 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 1,
 	},
 	[LINE6_PODXTLIVE_VARIAX] = {
 		.id = "PODxtLive",
@@ -155,6 +169,7 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 1,
 	},
 	[LINE6_PODXTPRO] = {
 		.id = "PODxtPro",
@@ -162,26 +177,31 @@ static const struct line6_properties line6_properties_table[] = {
 		.capabilities	= LINE6_CAP_CONTROL
 				| LINE6_CAP_PCM
 				| LINE6_CAP_HWMON,
+		.altsetting = 5,
 	},
 	[LINE6_TONEPORT_GX] = {
 		.id = "TonePortGX",
 		.name = "TonePort GX",
 		.capabilities	= LINE6_CAP_PCM,
+		.altsetting = 2,  /* 1..4 seem to be ok */
 	},
 	[LINE6_TONEPORT_UX1] = {
 		.id = "TonePortUX1",
 		.name = "TonePort UX1",
 		.capabilities	= LINE6_CAP_PCM,
+		.altsetting = 2,  /* 1..4 seem to be ok */
 	},
 	[LINE6_TONEPORT_UX2] = {
 		.id = "TonePortUX2",
 		.name = "TonePort UX2",
 		.capabilities	= LINE6_CAP_PCM,
+		.altsetting = 2,  /* defaults to 44.1kHz, 16-bit */
 	},
 	[LINE6_VARIAX] = {
 		.id = "Variax",
 		.name = "Variax Workbench",
 		.capabilities	= LINE6_CAP_CONTROL,
+		.altsetting = 1,
 	}
 };
 
@@ -703,7 +723,7 @@ static int line6_probe(struct usb_interface *interface,
 	struct usb_device *usbdev;
 	struct usb_line6 *line6;
 	const struct line6_properties *properties;
-	int interface_number, alternate = 0;
+	int interface_number;
 	int size = 0;
 	int ep_read = 0, ep_write = 0;
 	int ret;
@@ -729,56 +749,8 @@ static int line6_probe(struct usb_interface *interface,
 	/* query interface number */
 	interface_number = interface->cur_altsetting->desc.bInterfaceNumber;
 
-	switch (devtype) {
-	case LINE6_BASSPODXTLIVE:
-	case LINE6_PODXTLIVE_POD:
-	case LINE6_PODXTLIVE_VARIAX:
-	case LINE6_VARIAX:
-		alternate = 1;
-		break;
-
-	case LINE6_POCKETPOD:
-		alternate = 0;
-		break;
-
-	case LINE6_PODHD500_0:
-		alternate = 1;
-		break;
-
-	case LINE6_PODHD500_1:
-		alternate = 0;
-		break;
-
-	case LINE6_BASSPODXT:
-	case LINE6_BASSPODXTPRO:
-	case LINE6_PODXT:
-	case LINE6_PODXTPRO:
-	case LINE6_PODHD300:
-	case LINE6_PODHD400:
-		alternate = 5;
-		break;
-
-	case LINE6_GUITARPORT:
-	case LINE6_PODSTUDIO_GX:
-	case LINE6_PODSTUDIO_UX1:
-	case LINE6_TONEPORT_GX:
-	case LINE6_TONEPORT_UX1:
-		alternate = 2;	/* 1..4 seem to be ok */
-		break;
-
-	case LINE6_TONEPORT_UX2:
-	case LINE6_PODSTUDIO_UX2:
-		/* defaults to 44.1kHz, 16-bit */
-		alternate = 2;
-		break;
-
-	default:
-		MISSING_CASE;
-		ret = -ENODEV;
-		goto err_put;
-	}
-
-	ret = usb_set_interface(usbdev, interface_number, alternate);
+	ret = usb_set_interface(usbdev, interface_number,
+			properties->altsetting);
 	if (ret < 0) {
 		dev_err(&interface->dev, "set_interface failed\n");
 		goto err_put;

drivers/staging/line6/driver.h

@@ -115,6 +115,8 @@ struct line6_properties {
 		 line6usb driver.
 	*/
 	int capabilities;
+
+	int altsetting;
 };
 
 /**