V4L/DVB (7625): au0828: Cleanup

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

5 files changed, 95 insertions, 96 deletions

diff --git a/drivers/media/video/au0828/au0828-cards.c b/drivers/media/video/au0828/au0828-cards.c
index cbcc6f81f460..eafdc552a9fa 100644
--- a/drivers/media/video/au0828/au0828-cards.c
+++ b/drivers/media/video/au0828/au0828-cards.c
@@ -22,12 +22,6 @@
 #include "au0828.h"
 #include "au0828-cards.h"
 
-#define _dbg(level, fmt, arg...)\
-	do {\
-		if (debug >= level) \
-			printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
-	} while (0)
-
 struct au0828_board au0828_boards[] = {
 	[AU0828_BOARD_UNKNOWN] = {
 		.name	= "Unknown board",
@@ -51,6 +45,8 @@ int au0828_tuner_callback(void *priv, int command, int arg)
 {
 	struct au0828_dev *dev = priv;
 
+	dprintk(1, "%s()\n", __FUNCTION__);
+
 	switch(dev->board) {
 	case AU0828_BOARD_HAUPPAUGE_HVR850:
 	case AU0828_BOARD_HAUPPAUGE_HVR950Q:
@@ -97,9 +93,10 @@ static void hauppauge_eeprom(struct au0828_dev *dev, u8 *eeprom_data)
 
 void au0828_card_setup(struct au0828_dev *dev)
 {
-
 	static u8 eeprom[256];
 
+	dprintk(1, "%s()\n", __FUNCTION__);
+
 	if (dev->i2c_rc == 0) {
 		dev->i2c_client.addr = 0xa0 >> 1;
 		tveeprom_read(&dev->i2c_client, eeprom, sizeof(eeprom));
@@ -121,6 +118,8 @@ void au0828_card_setup(struct au0828_dev *dev)
  */
 void au0828_gpio_setup(struct au0828_dev *dev)
 {
+	dprintk(1, "%s()\n", __FUNCTION__);
+
 	switch(dev->board) {
 	case AU0828_BOARD_HAUPPAUGE_HVR850:
 	case AU0828_BOARD_HAUPPAUGE_HVR950Q:
diff --git a/drivers/media/video/au0828/au0828-core.c b/drivers/media/video/au0828/au0828-core.c
index a3410fc8f5f9..76801d135f2a 100644
--- a/drivers/media/video/au0828/au0828-core.c
+++ b/drivers/media/video/au0828/au0828-core.c
@@ -26,25 +26,23 @@
 
 #include "au0828.h"
 
-static unsigned int debug;
+/*
+ * 1 = General debug messages
+ * 2 = USB handling
+ * 4 = I2C related
+ * 8 = Bridge related
+ */
+unsigned int debug = 0;
 module_param(debug, int, 0644);
 MODULE_PARM_DESC(debug, "enable debug messages");
 
-#define _err(fmt, arg...)\
-	do {\
-		printk(KERN_ERR DRIVER_NAME "/0: " fmt, ## arg);\
-	} while (0)
-
-#define _info(fmt, arg...)\
-	do {\
-		printk(KERN_INFO DRIVER_NAME "/0: " fmt, ## arg);\
-	} while (0)
+unsigned int usb_debug = 0;
+module_param(usb_debug, int, 0644);
+MODULE_PARM_DESC(usb_debug, "enable usb debug messages");
 
-#define _dbg(level, fmt, arg...)\
-	do {\
-		if (debug >= level) \
-			printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
-	} while (0)
+unsigned int bridge_debug = 0;
+module_param(bridge_debug, int, 0644);
+MODULE_PARM_DESC(bridge_debug, "enable bridge debug messages");
 
 #define _AU0828_BULKPIPE 0x03
 #define _BULKPIPESIZE 0xffff
@@ -61,13 +59,13 @@ static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
 u32 au0828_readreg(struct au0828_dev *dev, u16 reg)
 {
 	recv_control_msg(dev, CMD_REQUEST_IN, 0, reg, dev->ctrlmsg, 1);
-	_dbg(3,"%s(0x%x) = 0x%x\n", __FUNCTION__, reg, dev->ctrlmsg[0]);
+	dprintk(8, "%s(0x%x) = 0x%x\n", __FUNCTION__, reg, dev->ctrlmsg[0]);
 	return dev->ctrlmsg[0];
 }
 
 u32 au0828_writereg(struct au0828_dev *dev, u16 reg, u32 val)
 {
-	_dbg(3,"%s(0x%x, 0x%x)\n", __FUNCTION__, reg, val);
+	dprintk(8, "%s(0x%x, 0x%x)\n", __FUNCTION__, reg, val);
 	return send_control_msg(dev, CMD_REQUEST_OUT, val, reg, dev->ctrlmsg, 0);
 }
 
@@ -76,7 +74,7 @@ static void cmd_msg_dump(struct au0828_dev *dev)
 	int i;
 
 	for (i = 0;i < sizeof(dev->ctrlmsg); i+=16)
-		_dbg(1,"%s() %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x "
+		dprintk(2,"%s() %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x "
 			"%02x %02x %02x %02x %02x %02x\n",
 			__FUNCTION__,
 			dev->ctrlmsg[i+0], dev->ctrlmsg[i+1],
@@ -107,7 +105,7 @@ static int send_control_msg(struct au0828_dev *dev, u16 request, u32 value,
 		status = min(status, 0);
 
 		if (status < 0) {
-			_err("%s() Failed sending control message, error %d.\n",
+			printk(KERN_ERR "%s() Failed sending control message, error %d.\n",
 				__FUNCTION__,
 				status);
 		}
@@ -137,13 +135,12 @@ static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
 		status = min(status, 0);
 
 		if (status < 0) {
-			_err("%s() Failed receiving ctrl msg, error %d.\n",
+			printk(KERN_ERR "%s() Failed receiving control message, error %d.\n",
 				__FUNCTION__,
 				status);
 		}
 		else
-			if (debug > 4)
-				cmd_msg_dump(dev);
+			cmd_msg_dump(dev);
 	}
 	mutex_unlock(&dev->mutex);
 	return status;
@@ -152,7 +149,7 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
 {
 	struct au0828_dev *dev = usb_get_intfdata(interface);
 
-	_dbg(1,"%s()\n", __FUNCTION__);
+	dprintk(1,"%s()\n", __FUNCTION__);
 
 	/* Digital TV */
 	au0828_dvb_unregister(dev);
@@ -182,7 +179,7 @@ static int au0828_usb_probe (struct usb_interface *interface,
 	if (ifnum != 0)
 		return -ENODEV;
 
-	_dbg(1,"%s() vendor id 0x%x device id 0x%x ifnum:%d\n",
+	dprintk(1,"%s() vendor id 0x%x device id 0x%x ifnum:%d\n",
 		__FUNCTION__,
 		le16_to_cpu(usbdev->descriptor.idVendor),
 		le16_to_cpu(usbdev->descriptor.idProduct),
@@ -190,7 +187,7 @@ static int au0828_usb_probe (struct usb_interface *interface,
 
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (dev == NULL) {
-		_err("Unable to allocate memory\n");
+		printk(KERN_ERR "%s() Unable to allocate memory\n", __FUNCTION__);
 		return -ENOMEM;
 	}
 
@@ -216,7 +213,7 @@ static int au0828_usb_probe (struct usb_interface *interface,
 	/* Digital TV */
 	au0828_dvb_register(dev);
 
-	_info("Registered device AU0828 [%s]\n",
+	printk(KERN_INFO "Registered device AU0828 [%s]\n",
 		au0828_boards[dev->board].name == NULL ? "Unset" :
 		au0828_boards[dev->board].name);
 
@@ -234,11 +231,29 @@ static int __init au0828_init(void)
 {
 	int ret;
 
-	_info("au0828 driver loaded\n");
+	if(debug)
+		printk(KERN_INFO "%s() Debugging is enabled\n", __FUNCTION__);
+
+	if(usb_debug) {
+		printk(KERN_INFO "%s() USB Debugging is enabled\n", __FUNCTION__);
+		debug |= 2;
+	}
+
+	if(i2c_debug) {
+		printk(KERN_INFO "%s() I2C Debugging is enabled\n", __FUNCTION__);
+		debug |= 4;
+	}
+
+	if(bridge_debug) {
+		printk(KERN_INFO "%s() Bridge Debugging is enabled\n", __FUNCTION__);
+		debug |= 8;
+	}
+
+	printk(KERN_INFO "au0828 driver loaded\n");
 
 	ret = usb_register(&au0828_usb_driver);
 	if (ret)
-		_err("usb_register failed, error = %d\n", ret);
+		printk(KERN_ERR "usb_register failed, error = %d\n", ret);
 
 	return ret;
 }
diff --git a/drivers/media/video/au0828/au0828-dvb.c b/drivers/media/video/au0828/au0828-dvb.c
index ecc08a8e31ca..453fb3efa3e0 100644
--- a/drivers/media/video/au0828/au0828-dvb.c
+++ b/drivers/media/video/au0828/au0828-dvb.c
@@ -26,19 +26,11 @@
 #include <media/v4l2-common.h>
 
 #include "au0828.h"
-
 #include "au8522.h"
 #include "xc5000.h"
 
 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 
-unsigned int dvb_debug = 1;
-
-#define _dbg(level, fmt, arg...)\
-	do { if (dvb_debug >= level)\
-		printk(KERN_DEBUG "%s/0: " fmt, DRIVER_NAME, ## arg);\
-	} while (0)
-
 static struct au8522_config hauppauge_hvr950q_config = {
 	.demod_address = 0x8e >> 1,
 	.status_mode   = AU8522_DEMODLOCKING,
@@ -57,6 +49,8 @@ static void urb_completion(struct urb *purb)
 	struct au0828_dev *dev = purb->context;
 	int ptype = usb_pipetype(purb->pipe);
 
+	dprintk(2, "%s()\n", __FUNCTION__);
+
 	if (!dev)
 		return;
 
@@ -84,7 +78,7 @@ static int stop_urb_transfer(struct au0828_dev *dev)
 {
 	int i;
 
-	printk(KERN_INFO "%s()\n", __FUNCTION__);
+	dprintk(2, "%s()\n", __FUNCTION__);
 
 	/* FIXME:  Do we need to free the transfer_buffers? */
 	for (i = 0; i < URB_COUNT; i++) {
@@ -105,15 +99,11 @@ static int start_urb_transfer(struct au0828_dev *dev)
 {
 	struct urb *purb;
 	int i, ret = -ENOMEM;
-	unsigned int pipe = usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE);
-	int pipesize = usb_maxpacket(dev->usbdev, pipe, usb_pipeout(pipe));
-	int packets = _BULKPIPESIZE / pipesize;
-	int transfer_buflen = packets * pipesize;
 
-	printk(KERN_INFO "%s() transfer_buflen = %d\n", __FUNCTION__, transfer_buflen);
+	dprintk(2, "%s()\n", __FUNCTION__);
 
 	if (dev->urb_streaming) {
-		printk("%s: iso xfer already running!\n", __FUNCTION__);
+		dprintk(2, "%s: iso xfer already running!\n", __FUNCTION__);
 		return 0;
 	}
 
@@ -167,17 +157,15 @@ static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
 	struct au0828_dvb *dvb = &dev->dvb;
 	int ret = 0;
 
-	printk(KERN_INFO "%s() pid = 0x%x index = %d\n", __FUNCTION__, feed->pid, feed->index);
+	dprintk(1, "%s()\n", __FUNCTION__);
 
 	if (!demux->dmx.frontend)
 		return -EINVAL;
 
-	printk(KERN_INFO "%s() Preparing, feeding = %d\n", __FUNCTION__, dvb->feeding);
 	if (dvb) {
 		mutex_lock(&dvb->lock);
 		if (dvb->feeding++ == 0) {
-			printk(KERN_INFO "%s() Starting Transport DMA\n",
-				__FUNCTION__);
+			/* Start transport */
 			au0828_write(dev, 0x608, 0x90);
 			au0828_write(dev, 0x609, 0x72);
 			au0828_write(dev, 0x60a, 0x71);
@@ -197,13 +185,12 @@ static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
 	struct au0828_dvb *dvb = &dev->dvb;
 	int ret = 0;
 
-	printk(KERN_INFO "%s() pid = 0x%x index = %d\n", __FUNCTION__, feed->pid, feed->index);
+	dprintk(1, "%s()\n", __FUNCTION__);
 
 	if (dvb) {
 		mutex_lock(&dvb->lock);
 		if (--dvb->feeding == 0) {
-			printk(KERN_INFO "%s() Stopping Transport DMA\n",
-				__FUNCTION__);
+			/* Stop transport */
 			au0828_write(dev, 0x608, 0x00);
 			au0828_write(dev, 0x609, 0x00);
 			au0828_write(dev, 0x60a, 0x00);
@@ -221,11 +208,13 @@ int dvb_register(struct au0828_dev *dev)
 	struct au0828_dvb *dvb = &dev->dvb;
 	int result;
 
+	dprintk(1, "%s()\n", __FUNCTION__);
+
 	/* register adapter */
 	result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
 				      &dev->usbdev->dev, adapter_nr);
 	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
+		printk(KERN_ERROR "%s: dvb_register_adapter failed (errno = %d)\n",
 		       DRIVER_NAME, result);
 		goto fail_adapter;
 	}
@@ -234,7 +223,7 @@ int dvb_register(struct au0828_dev *dev)
 	/* register frontend */
 	result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
 	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
+		printk(KERN_ERR "%s: dvb_register_frontend failed (errno = %d)\n",
 		       DRIVER_NAME, result);
 		goto fail_frontend;
 	}
@@ -250,7 +239,7 @@ int dvb_register(struct au0828_dev *dev)
 	dvb->demux.stop_feed  = au0828_dvb_stop_feed;
 	result = dvb_dmx_init(&dvb->demux);
 	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
+		printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
 		       DRIVER_NAME, result);
 		goto fail_dmx;
 	}
@@ -260,7 +249,7 @@ int dvb_register(struct au0828_dev *dev)
 	dvb->dmxdev.capabilities = 0;
 	result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
 	if (result < 0) {
-		printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
+		printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
 		       DRIVER_NAME, result);
 		goto fail_dmxdev;
 	}
@@ -268,7 +257,7 @@ int dvb_register(struct au0828_dev *dev)
 	dvb->fe_hw.source = DMX_FRONTEND_0;
 	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 	if (result < 0) {
-		printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
+		printk(KERN_ERR "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
 		       DRIVER_NAME, result);
 		goto fail_fe_hw;
 	}
@@ -276,14 +265,14 @@ int dvb_register(struct au0828_dev *dev)
 	dvb->fe_mem.source = DMX_MEMORY_FE;
 	result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
 	if (result < 0) {
-		printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
+		printk(KERN_ERR "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
 		       DRIVER_NAME, result);
 		goto fail_fe_mem;
 	}
 
 	result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
 	if (result < 0) {
-		printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
+		printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
 		       DRIVER_NAME, result);
 		goto fail_fe_conn;
 	}
@@ -313,6 +302,8 @@ void au0828_dvb_unregister(struct au0828_dev *dev)
 {
 	struct au0828_dvb *dvb = &dev->dvb;
 
+	dprintk(1, "%s()\n", __FUNCTION__);
+
 	if(dvb->frontend == NULL)
 		return;
 
@@ -335,6 +326,8 @@ int au0828_dvb_register(struct au0828_dev *dev)
 	struct au0828_dvb *dvb = &dev->dvb;
 	int ret;
 
+	dprintk(1, "%s()\n", __FUNCTION__);
+
 	/* init frontend */
 	switch (dev->board) {
 	case AU0828_BOARD_HAUPPAUGE_HVR850:
@@ -355,7 +348,7 @@ int au0828_dvb_register(struct au0828_dev *dev)
 		break;
 	}
 	if (NULL == dvb->frontend) {
-		printk("Frontend initialization failed\n");
+		printk(KERN_ERR "%s() Frontend initialization failed\n", __FUNCTION__);
 		return -1;
 	}
 
diff --git a/drivers/media/video/au0828/au0828-i2c.c b/drivers/media/video/au0828/au0828-i2c.c
index 3e7482481152..4545a9cbaa6d 100644
--- a/drivers/media/video/au0828/au0828-i2c.c
+++ b/drivers/media/video/au0828/au0828-i2c.c
@@ -29,19 +29,14 @@
 
 #include <media/v4l2-common.h>
 
-static unsigned int i2c_debug;
-module_param(i2c_debug, int, 0644);
+unsigned int i2c_debug = 0;
+module_param(i2c_debug, int, 0444);
 MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]");
 
-static unsigned int i2c_scan = 0;
+unsigned int i2c_scan = 0;
 module_param(i2c_scan, int, 0444);
 MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time");
 
-#define dprintk(level, fmt, arg...)\
-	do { if (i2c_debug >= level)\
-		printk(KERN_DEBUG "%s/0: " fmt, DRIVER_NAME, ## arg);\
-	} while (0)
-
 #define I2C_WAIT_DELAY 512
 #define I2C_WAIT_RETRY 64
 
@@ -146,7 +141,7 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
 	int i, strobe = 0;
 	struct au0828_dev *dev = i2c_adap->algo_data;
 
-	dprintk(1, "%s()\n", __FUNCTION__);
+	dprintk(4, "%s()\n", __FUNCTION__);
 
 	au0828_write(dev, REG_2FF, 0x01);
 	au0828_write(dev, REG_202, 0x07);
@@ -154,13 +149,11 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
 	/* Hardware needs 8 bit addresses */
 	au0828_write(dev, REG_203, msg->addr << 1);
 
-	if (i2c_debug)
-		dprintk(1, "SEND: %02x\n", msg->addr);
+	dprintk(4, "SEND: %02x\n", msg->addr);
 
 	for (i=0; i < msg->len;) {
 
-		if (i2c_debug)
-			dprintk(1, " %02x\n", msg->buf[i]);
+		dprintk(4, " %02x\n", msg->buf[i]);
 
 		au0828_write(dev, REG_205, msg->buf[i]);
 
@@ -187,8 +180,7 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
 	if (!i2c_wait_done(i2c_adap))
 		return -EIO;
 
-	if (i2c_debug)
-		dprintk(1, "\n");
+	dprintk(4, "\n");
 
 	return msg->len;
 }
@@ -200,7 +192,7 @@ static int i2c_readbytes(struct i2c_adapter *i2c_adap,
 	struct au0828_dev *dev = i2c_adap->algo_data;
 	int i;
 
-	dprintk(1, "%s()\n", __FUNCTION__);
+	dprintk(4, "%s()\n", __FUNCTION__);
 
 	au0828_write(dev, REG_2FF, 0x01);
 	au0828_write(dev, REG_202, 0x07);
@@ -208,8 +200,7 @@ static int i2c_readbytes(struct i2c_adapter *i2c_adap,
 	/* Hardware needs 8 bit addresses */
 	au0828_write(dev, REG_203, msg->addr << 1);
 
-	if (i2c_debug)
-		dprintk(1, " RECV:\n");
+	dprintk(4, " RECV:\n");
 
 	/* Deal with i2c_scan */
 	if (msg->len == 0) {
@@ -233,14 +224,12 @@ static int i2c_readbytes(struct i2c_adapter *i2c_adap,
 
 		msg->buf[i-1] = au0828_read(dev, REG_209) & 0xff;
 
-		if (i2c_debug)
-			dprintk(1, " %02x\n", msg->buf[i-1]);
+		dprintk(4, " %02x\n", msg->buf[i-1]);
 	}
 	if (!i2c_wait_done(i2c_adap))
 		return -EIO;
 
-	if (i2c_debug)
-		dprintk(1, "\n");
+	dprintk(4, "\n");
 
 	return msg->len;
 }
@@ -250,10 +239,10 @@ static int i2c_xfer(struct i2c_adapter *i2c_adap,
 {
 	int i, retval = 0;
 
-	dprintk(1, "%s(num = %d)\n", __FUNCTION__, num);
+	dprintk(4, "%s(num = %d)\n", __FUNCTION__, num);
 
 	for (i = 0 ; i < num; i++) {
-		dprintk(1, "%s(num = %d) addr = 0x%02x  len = 0x%x\n",
+		dprintk(4, "%s(num = %d) addr = 0x%02x  len = 0x%x\n",
 			__FUNCTION__, num, msgs[i].addr, msgs[i].len);
 		if (msgs[i].flags & I2C_M_RD) {
 			/* read */
@@ -384,6 +373,7 @@ int au0828_i2c_register(struct au0828_dev *dev)
 			do_i2c_scan(DRIVER_NAME, &dev->i2c_client);
 	} else
 		printk("%s: i2c bus register FAILED\n", DRIVER_NAME);
+
 	return dev->i2c_rc;
 }
 
@@ -393,10 +383,3 @@ int au0828_i2c_unregister(struct au0828_dev *dev)
 	return 0;
 }
 
-/* ----------------------------------------------------------------------- */
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
diff --git a/drivers/media/video/au0828/au0828.h b/drivers/media/video/au0828/au0828.h
index 3dc09f8ffef7..94426770a6df 100644
--- a/drivers/media/video/au0828/au0828.h
+++ b/drivers/media/video/au0828/au0828.h
@@ -96,6 +96,9 @@ struct au0828_buff {
 /* au0828-core.c */
 extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
+extern unsigned int debug;
+extern unsigned int usb_debug;
+extern unsigned int bridge_debug;
 
 /* ----------------------------------------------------------- */
 /* au0828-cards.c */
@@ -112,8 +115,14 @@ extern int au0828_i2c_register(struct au0828_dev *dev);
 extern int au0828_i2c_unregister(struct au0828_dev *dev);
 extern void au0828_call_i2c_clients(struct au0828_dev *dev,
 	unsigned int cmd, void *arg);
+extern unsigned int i2c_debug;
 
 /* ----------------------------------------------------------- */
 /* au0828-dvb.c */
 extern int au0828_dvb_register(struct au0828_dev *dev);
 extern void au0828_dvb_unregister(struct au0828_dev *dev);
+
+#define dprintk(level, fmt, arg...)\
+	do { if (debug & level)\
+		printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\
+	} while (0)