usb: gadget: f_uac1: use defined constants as defaults

When configfs support is added the values in question will have to be
used in two different places. Substitute them with defined constants
to avoid duplicating magic numbers.
Tested-by: Sebastian Reimers <sebastian.reimers@googlemail.com>
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/gadget/function/f_uac1.c

@@ -17,8 +17,6 @@
 
 #include "u_uac1.h"
 
-#define OUT_EP_MAX_PACKET_SIZE	200
-
 static int generic_set_cmd(struct usb_audio_control *con, u8 cmd, int value);
 static int generic_get_cmd(struct usb_audio_control *con, u8 cmd);
 
@@ -173,7 +171,7 @@ static struct usb_endpoint_descriptor as_out_ep_desc  = {
 	.bEndpointAddress =	USB_DIR_OUT,
 	.bmAttributes =		USB_ENDPOINT_SYNC_ADAPTIVE
 				| USB_ENDPOINT_XFER_ISOC,
-	.wMaxPacketSize =	__constant_cpu_to_le16(OUT_EP_MAX_PACKET_SIZE),
+	.wMaxPacketSize	=	cpu_to_le16(UAC1_OUT_EP_MAX_PACKET_SIZE),
 	.bInterval =		4,
 };
 

drivers/usb/gadget/function/u_uac1.h

@@ -23,6 +23,14 @@
 
 #include "gadget_chips.h"
 
+#define FILE_PCM_PLAYBACK	"/dev/snd/pcmC0D0p"
+#define FILE_PCM_CAPTURE	"/dev/snd/pcmC0D0c"
+#define FILE_CONTROL		"/dev/snd/controlC0"
+
+#define UAC1_OUT_EP_MAX_PACKET_SIZE	200
+#define UAC1_REQ_COUNT			256
+#define UAC1_AUDIO_BUF_SIZE		48000
+
 /*
  * This represents the USB side of an audio card device, managed by a USB
  * function which provides control and stream interfaces.

drivers/usb/gadget/legacy/audio.c

@@ -54,9 +54,7 @@ static int c_ssize = UAC2_DEF_CSSIZE;
 module_param(c_ssize, uint, S_IRUGO);
 MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)");
 #else
-#define FILE_PCM_PLAYBACK	"/dev/snd/pcmC0D0p"
-#define FILE_PCM_CAPTURE	"/dev/snd/pcmC0D0c"
-#define FILE_CONTROL		"/dev/snd/controlC0"
+#include "u_uac1.h"
 
 static char *fn_play = FILE_PCM_PLAYBACK;
 module_param(fn_play, charp, S_IRUGO);
@@ -70,16 +68,15 @@ static char *fn_cntl = FILE_CONTROL;
 module_param(fn_cntl, charp, S_IRUGO);
 MODULE_PARM_DESC(fn_cntl, "Control device file name");
 
-#define OUT_EP_MAX_PACKET_SIZE	200
-static int req_buf_size = OUT_EP_MAX_PACKET_SIZE;
+static int req_buf_size = UAC1_OUT_EP_MAX_PACKET_SIZE;
 module_param(req_buf_size, int, S_IRUGO);
 MODULE_PARM_DESC(req_buf_size, "ISO OUT endpoint request buffer size");
 
-static int req_count = 256;
+static int req_count = UAC1_REQ_COUNT;
 module_param(req_count, int, S_IRUGO);
 MODULE_PARM_DESC(req_count, "ISO OUT endpoint request count");
 
-static int audio_buf_size = 48000;
+static int audio_buf_size = UAC1_AUDIO_BUF_SIZE;
 module_param(audio_buf_size, int, S_IRUGO);
 MODULE_PARM_DESC(audio_buf_size, "Audio buffer size");
 #endif
@@ -111,10 +108,6 @@ static struct usb_function_instance *fi_uac1;
 static struct usb_function *f_uac1;
 #endif
 
-#ifdef CONFIG_GADGET_UAC1
-#include "u_uac1.h"
-#endif
-
 /*-------------------------------------------------------------------------*/
 
 /* DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!