staging: comedi: usbdux: move and rename the bulk transfer commands

For aesthetic reasons, move the defines used for the bulk transfer
commands out of the middle of the code and rename them so they are
a bit more readable.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/usbdux.c

@@ -99,6 +99,17 @@ sampling rate. If you sample two channels you get 4kHz and so on.
 #define VENDOR_DIR_OUT		0x40
 #define USBDUX_CPU_CS		0xe600
 
+/* usbdux bulk transfer commands */
+#define USBDUX_CMD_MULT_AI	0
+#define USBDUX_CMD_AO		1
+#define USBDUX_CMD_DIO_CFG	2
+#define USBDUX_CMD_DIO_BITS	3
+#define USBDUX_CMD_SINGLE_AI	4
+#define USBDUX_CMD_TIMER_RD	5
+#define USBDUX_CMD_TIMER_WR	6
+#define USBDUX_CMD_PWM_ON	7
+#define USBDUX_CMD_PWM_OFF	8
+
 #define USBDUX_NUM_AO_CHAN	4
 
 /* timeout for the USB-transfer in ms */
@@ -680,18 +691,6 @@ static int8_t create_adc_command(unsigned int chan, int range)
 	return (chan << 4) | ((p == 1) << 2) | ((r == 1) << 3);
 }
 
-/* bulk transfers to usbdux */
-
-#define SENDADCOMMANDS            0
-#define SENDDACOMMANDS            1
-#define SENDDIOCONFIGCOMMAND      2
-#define SENDDIOBITSCOMMAND        3
-#define SENDSINGLEAD              4
-#define READCOUNTERCOMMAND        5
-#define WRITECOUNTERCOMMAND       6
-#define SENDPWMON                 7
-#define SENDPWMOFF                8
-
 static int send_dux_commands(struct comedi_device *dev, int cmd_type)
 {
 	struct usb_device *usb = comedi_to_usb_dev(dev);
@@ -780,7 +779,7 @@ static int usbdux_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 		devpriv->dux_commands[i + 2] = create_adc_command(chan, range);
 	}
 
-	ret = send_dux_commands(dev, SENDADCOMMANDS);
+	ret = send_dux_commands(dev, USBDUX_CMD_MULT_AI);
 	if (ret < 0)
 		goto ai_cmd_exit;
 
@@ -864,12 +863,12 @@ static int usbdux_ai_insn_read(struct comedi_device *dev,
 	devpriv->dux_commands[1] = create_adc_command(chan, range);
 
 	/* adc commands */
-	ret = send_dux_commands(dev, SENDSINGLEAD);
+	ret = send_dux_commands(dev, USBDUX_CMD_SINGLE_AI);
 	if (ret < 0)
 		goto ai_read_exit;
 
 	for (i = 0; i < insn->n; i++) {
-		ret = receive_dux_commands(dev, SENDSINGLEAD);
+		ret = receive_dux_commands(dev, USBDUX_CMD_SINGLE_AI);
 		if (ret < 0)
 			goto ai_read_exit;
 
@@ -933,7 +932,7 @@ static int usbdux_ao_insn_write(struct comedi_device *dev,
 		/* one 16 bit value */
 		*p = cpu_to_le16(val);
 
-		ret = send_dux_commands(dev, SENDDACOMMANDS);
+		ret = send_dux_commands(dev, USBDUX_CMD_AO);
 		if (ret < 0)
 			goto ao_write_exit;
 	}
@@ -1192,10 +1191,10 @@ static int usbdux_dio_insn_bits(struct comedi_device *dev,
 	 * This command also tells the firmware to return
 	 * the digital input lines.
 	 */
-	ret = send_dux_commands(dev, SENDDIOBITSCOMMAND);
+	ret = send_dux_commands(dev, USBDUX_CMD_DIO_BITS);
 	if (ret < 0)
 		goto dio_exit;
-	ret = receive_dux_commands(dev, SENDDIOBITSCOMMAND);
+	ret = receive_dux_commands(dev, USBDUX_CMD_DIO_BITS);
 	if (ret < 0)
 		goto dio_exit;
 
@@ -1220,10 +1219,10 @@ static int usbdux_counter_read(struct comedi_device *dev,
 	down(&devpriv->sem);
 
 	for (i = 0; i < insn->n; i++) {
-		ret = send_dux_commands(dev, READCOUNTERCOMMAND);
+		ret = send_dux_commands(dev, USBDUX_CMD_TIMER_RD);
 		if (ret < 0)
 			goto counter_read_exit;
-		ret = receive_dux_commands(dev, READCOUNTERCOMMAND);
+		ret = receive_dux_commands(dev, USBDUX_CMD_TIMER_RD);
 		if (ret < 0)
 			goto counter_read_exit;
 
@@ -1254,7 +1253,7 @@ static int usbdux_counter_write(struct comedi_device *dev,
 	for (i = 0; i < insn->n; i++) {
 		*p = cpu_to_le16(data[i]);
 
-		ret = send_dux_commands(dev, WRITECOUNTERCOMMAND);
+		ret = send_dux_commands(dev, USBDUX_CMD_TIMER_WR);
 		if (ret < 0)
 			break;
 	}
@@ -1298,7 +1297,7 @@ static int usbdux_pwm_cancel(struct comedi_device *dev,
 	down(&devpriv->sem);
 	/* unlink only if it is really running */
 	usbdux_pwm_stop(dev, devpriv->pwm_cmd_running);
-	ret = send_dux_commands(dev, SENDPWMOFF);
+	ret = send_dux_commands(dev, USBDUX_CMD_PWM_OFF);
 	up(&devpriv->sem);
 
 	return ret;
@@ -1409,7 +1408,7 @@ static int usbdux_pwm_start(struct comedi_device *dev,
 		goto pwm_start_exit;
 
 	devpriv->dux_commands[1] = devpriv->pwm_delay;
-	ret = send_dux_commands(dev, SENDPWMON);
+	ret = send_dux_commands(dev, USBDUX_CMD_PWM_ON);
 	if (ret < 0)
 		goto pwm_start_exit;