[media] siano: split debugfs code into a separate file

To avoid mixing two different things at the same place, move the
debugfs code into a separate file.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/common/siano/Kconfig

@@ -17,3 +17,15 @@ config SMS_SIANO_RC
 	default y
 	---help---
 	  Choose Y to select Remote Controller support for Siano driver.
+
+config SMS_SIANO_DEBUGFS
+	bool "Enable debugfs for smsdvb"
+	depends on SMS_SIANO_MDTV
+	depends on DEBUG_FS
+	depends on SMS_USB_DRV
+	---help---
+	  Choose Y to enable visualizing a dump of the frontend
+	  statistics response packets via debugfs. Currently, works
+	  only with Siano USB devices.
+
+	  Useful only for developers. In doubt, say N.

drivers/media/common/siano/Makefile

 smsmdtv-objs := smscoreapi.o sms-cards.o smsendian.o
+smsdvb-objs := smsdvb-main.o
 
 obj-$(CONFIG_SMS_SIANO_MDTV) += smsmdtv.o smsdvb.o
 
@@ -6,6 +7,10 @@ ifeq ($(CONFIG_SMS_SIANO_RC),y)
   smsmdtv-objs += smsir.o
 endif
 
+ifeq ($(CONFIG_SMS_SIANO_DEBUGFS),y)
+  smsdvb-objs += smsdvb-debugfs.o
+endif
+
 ccflags-y += -Idrivers/media/dvb-core
 ccflags-y += $(extra-cflags-y) $(extra-cflags-m)
 

drivers/media/common/siano/smscoreapi.h

@@ -184,6 +184,12 @@ struct smscore_device_t {
 	/* Infrared (IR) */
 	struct ir_t ir;
 
+	/*
+	 * Identify if device is USB or not.
+	 * Used by smsdvb-sysfs to know the root node for debugfs
+	 */
+	bool is_usb_device;
+
 	int led_state;
 };
 

drivers/media/common/siano/smsdvb-debugfs.c

+/***********************************************************************
+ *
+ * Copyright(c) 2013 Mauro Carvalho Chehab <mchehab@redhat.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ***********************************************************************/
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/debugfs.h>
+#include <linux/spinlock.h>
+#include <linux/usb.h>
+
+#include "dmxdev.h"
+#include "dvbdev.h"
+#include "dvb_demux.h"
+#include "dvb_frontend.h"
+
+#include "smscoreapi.h"
+
+#include "smsdvb.h"
+
+static struct dentry *smsdvb_debugfs_usb_root;
+
+struct smsdvb_debugfs {
+	struct kref		refcount;
+	spinlock_t		lock;
+
+	char			stats_data[PAGE_SIZE];
+	unsigned		stats_count;
+	bool			stats_was_read;
+
+	wait_queue_head_t	stats_queue;
+};
+
+void smsdvb_print_dvb_stats(struct smsdvb_debugfs *debug_data,
+			    struct SMSHOSTLIB_STATISTICS_ST *p)
+{
+	int n = 0;
+	char *buf;
+
+	spin_lock(&debug_data->lock);
+	if (debug_data->stats_count) {
+		spin_unlock(&debug_data->lock);
+		return;
+	}
+
+	buf = debug_data->stats_data;
+
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsRfLocked = %d\n", p->IsRfLocked);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsDemodLocked = %d\n", p->IsDemodLocked);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsExternalLNAOn = %d\n", p->IsExternalLNAOn);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "SNR = %d\n", p->SNR);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "BER = %d\n", p->BER);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "FIB_CRC = %d\n", p->FIB_CRC);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "TS_PER = %d\n", p->TS_PER);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "MFER = %d\n", p->MFER);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "RSSI = %d\n", p->RSSI);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "InBandPwr = %d\n", p->InBandPwr);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "CarrierOffset = %d\n", p->CarrierOffset);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "ModemState = %d\n", p->ModemState);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "Frequency = %d\n", p->Frequency);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "Bandwidth = %d\n", p->Bandwidth);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "TransmissionMode = %d\n", p->TransmissionMode);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "ModemState = %d\n", p->ModemState);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "GuardInterval = %d\n", p->GuardInterval);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "CodeRate = %d\n", p->CodeRate);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "LPCodeRate = %d\n", p->LPCodeRate);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "Hierarchy = %d\n", p->Hierarchy);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "Constellation = %d\n", p->Constellation);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "BurstSize = %d\n", p->BurstSize);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "BurstDuration = %d\n", p->BurstDuration);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "BurstCycleTime = %d\n", p->BurstCycleTime);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "CalculatedBurstCycleTime = %d\n",
+	              p->CalculatedBurstCycleTime);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumOfRows = %d\n", p->NumOfRows);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumOfPaddCols = %d\n", p->NumOfPaddCols);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumOfPunctCols = %d\n", p->NumOfPunctCols);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "ErrorTSPackets = %d\n", p->ErrorTSPackets);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "TotalTSPackets = %d\n", p->TotalTSPackets);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumOfValidMpeTlbs = %d\n", p->NumOfValidMpeTlbs);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumOfInvalidMpeTlbs = %d\n", p->NumOfInvalidMpeTlbs);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumOfCorrectedMpeTlbs = %d\n", p->NumOfCorrectedMpeTlbs);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "BERErrorCount = %d\n", p->BERErrorCount);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "BERBitCount = %d\n", p->BERBitCount);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "SmsToHostTxErrors = %d\n", p->SmsToHostTxErrors);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "PreBER = %d\n", p->PreBER);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "CellId = %d\n", p->CellId);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "DvbhSrvIndHP = %d\n", p->DvbhSrvIndHP);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "DvbhSrvIndLP = %d\n", p->DvbhSrvIndLP);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumMPEReceived = %d\n", p->NumMPEReceived);
+
+	debug_data->stats_count = n;
+	spin_unlock(&debug_data->lock);
+	wake_up(&debug_data->stats_queue);
+}
+
+void smsdvb_print_isdb_stats(struct smsdvb_debugfs *debug_data,
+			     struct SMSHOSTLIB_STATISTICS_ISDBT_ST *p)
+{
+	int i, n = 0;
+	char *buf;
+
+	spin_lock(&debug_data->lock);
+	if (debug_data->stats_count) {
+		spin_unlock(&debug_data->lock);
+		return;
+	}
+
+	buf = debug_data->stats_data;
+
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsRfLocked = %d\t\t", p->IsRfLocked);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsDemodLocked = %d\t", p->IsDemodLocked);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsExternalLNAOn = %d\n", p->IsExternalLNAOn);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "SNR = %d dB\t\t", p->SNR);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "RSSI = %d dBm\t\t", p->RSSI);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "InBandPwr = %d dBm\n", p->InBandPwr);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "CarrierOffset = %d\t", p->CarrierOffset);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "Bandwidth = %d\t\t", p->Bandwidth);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "Frequency = %d Hz\n", p->Frequency);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "TransmissionMode = %d\t", p->TransmissionMode);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "ModemState = %d\t\t", p->ModemState);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "GuardInterval = %d\n", p->GuardInterval);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "SystemType = %d\t\t", p->SystemType);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "PartialReception = %d\t", p->PartialReception);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumOfLayers = %d\n", p->NumOfLayers);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "SmsToHostTxErrors = %d\n", p->SmsToHostTxErrors);
+
+	for (i = 0; i < 3; i++) {
+		if (p->LayerInfo[i].NumberOfSegments < 1 ||
+		    p->LayerInfo[i].NumberOfSegments > 13)
+			continue;
+
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\nLayer %d\n", i);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tCodeRate = %d\t",
+			      p->LayerInfo[i].CodeRate);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "Constellation = %d\n",
+			      p->LayerInfo[i].Constellation);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tBER = %-5d\t",
+			      p->LayerInfo[i].BER);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tBERErrorCount = %-5d\t",
+			      p->LayerInfo[i].BERErrorCount);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "BERBitCount = %-5d\n",
+			      p->LayerInfo[i].BERBitCount);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tPreBER = %-5d\t",
+			      p->LayerInfo[i].PreBER);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tTS_PER = %-5d\n",
+			      p->LayerInfo[i].TS_PER);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tErrorTSPackets = %-5d\t",
+			      p->LayerInfo[i].ErrorTSPackets);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "TotalTSPackets = %-5d\t",
+			      p->LayerInfo[i].TotalTSPackets);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "TILdepthI = %d\n",
+			      p->LayerInfo[i].TILdepthI);
+		n += snprintf(&buf[n], PAGE_SIZE - n,
+			      "\tNumberOfSegments = %d\t",
+			      p->LayerInfo[i].NumberOfSegments);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "TMCCErrors = %d\n",
+			      p->LayerInfo[i].TMCCErrors);
+	}
+
+	debug_data->stats_count = n;
+	spin_unlock(&debug_data->lock);
+	wake_up(&debug_data->stats_queue);
+}
+
+void smsdvb_print_isdb_stats_ex(struct smsdvb_debugfs *debug_data,
+				struct SMSHOSTLIB_STATISTICS_ISDBT_EX_ST *p)
+{
+	int i, n = 0;
+	char *buf;
+
+	spin_lock(&debug_data->lock);
+	if (debug_data->stats_count) {
+		spin_unlock(&debug_data->lock);
+		return;
+	}
+
+	buf = debug_data->stats_data;
+
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsRfLocked = %d\t\t", p->IsRfLocked);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsDemodLocked = %d\t", p->IsDemodLocked);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "IsExternalLNAOn = %d\n", p->IsExternalLNAOn);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "SNR = %d dB\t\t", p->SNR);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "RSSI = %d dBm\t\t", p->RSSI);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "InBandPwr = %d dBm\n", p->InBandPwr);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "CarrierOffset = %d\t", p->CarrierOffset);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "Bandwidth = %d\t\t", p->Bandwidth);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "Frequency = %d Hz\n", p->Frequency);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "TransmissionMode = %d\t", p->TransmissionMode);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "ModemState = %d\t\t", p->ModemState);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "GuardInterval = %d\n", p->GuardInterval);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "SystemType = %d\t\t", p->SystemType);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "PartialReception = %d\t", p->PartialReception);
+	n += snprintf(&buf[n], PAGE_SIZE - n,
+		      "NumOfLayers = %d\n", p->NumOfLayers);
+	n += snprintf(&buf[n], PAGE_SIZE - n, "SegmentNumber = %d\t",
+		      p->SegmentNumber);
+	n += snprintf(&buf[n], PAGE_SIZE - n, "TuneBW = %d\n",
+		      p->TuneBW);
+
+	for (i = 0; i < 3; i++) {
+		if (p->LayerInfo[i].NumberOfSegments < 1 ||
+		    p->LayerInfo[i].NumberOfSegments > 13)
+			continue;
+
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\nLayer %d\n", i);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tCodeRate = %d\t",
+			      p->LayerInfo[i].CodeRate);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "Constellation = %d\n",
+			      p->LayerInfo[i].Constellation);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tBER = %-5d\t",
+			      p->LayerInfo[i].BER);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tBERErrorCount = %-5d\t",
+			      p->LayerInfo[i].BERErrorCount);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "BERBitCount = %-5d\n",
+			      p->LayerInfo[i].BERBitCount);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tPreBER = %-5d\t",
+			      p->LayerInfo[i].PreBER);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tTS_PER = %-5d\n",
+			      p->LayerInfo[i].TS_PER);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "\tErrorTSPackets = %-5d\t",
+			      p->LayerInfo[i].ErrorTSPackets);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "TotalTSPackets = %-5d\t",
+			      p->LayerInfo[i].TotalTSPackets);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "TILdepthI = %d\n",
+			      p->LayerInfo[i].TILdepthI);
+		n += snprintf(&buf[n], PAGE_SIZE - n,
+			      "\tNumberOfSegments = %d\t",
+			      p->LayerInfo[i].NumberOfSegments);
+		n += snprintf(&buf[n], PAGE_SIZE - n, "TMCCErrors = %d\n",
+			      p->LayerInfo[i].TMCCErrors);
+	}
+
+
+	debug_data->stats_count = n;
+	spin_unlock(&debug_data->lock);
+
+	wake_up(&debug_data->stats_queue);
+}
+
+static int smsdvb_stats_open(struct inode *inode, struct file *file)
+{
+	struct smsdvb_client_t *client = inode->i_private;
+	struct smsdvb_debugfs *debug_data = client->debug_data;
+
+	kref_get(&debug_data->refcount);
+
+	spin_lock(&debug_data->lock);
+	debug_data->stats_count = 0;
+	debug_data->stats_was_read = false;
+	spin_unlock(&debug_data->lock);
+
+	file->private_data = debug_data;
+
+	return 0;
+}
+
+static int smsdvb_stats_wait_read(struct smsdvb_debugfs *debug_data)
+{
+	int rc = 1;
+
+	spin_lock(&debug_data->lock);
+
+	if (debug_data->stats_was_read)
+		goto exit;
+
+	rc = debug_data->stats_count;
+
+exit:
+	spin_unlock(&debug_data->lock);
+	return rc;
+}
+
+static ssize_t smsdvb_stats_read(struct file *file, char __user *user_buf,
+				      size_t nbytes, loff_t *ppos)
+{
+	int rc = 0;
+	struct smsdvb_debugfs *debug_data = file->private_data;
+
+	rc = wait_event_interruptible(debug_data->stats_queue,
+				      smsdvb_stats_wait_read(debug_data));
+	if (rc < 0)
+		return rc;
+
+	rc = simple_read_from_buffer(user_buf, nbytes, ppos,
+				     debug_data->stats_data,
+				     debug_data->stats_count);
+	spin_lock(&debug_data->lock);
+	debug_data->stats_was_read = true;
+	spin_unlock(&debug_data->lock);
+
+	return rc;
+}
+
+static void smsdvb_debugfs_data_release(struct kref *ref)
+{
+	struct smsdvb_debugfs *debug_data;
+
+	debug_data = container_of(ref, struct smsdvb_debugfs, refcount);
+	kfree(debug_data);
+}
+
+static int smsdvb_stats_release(struct inode *inode, struct file *file)
+{
+	struct smsdvb_debugfs *debug_data = file->private_data;
+
+	spin_lock(&debug_data->lock);
+	debug_data->stats_was_read = true;
+	spin_unlock(&debug_data->lock);
+	wake_up_interruptible_sync(&debug_data->stats_queue);
+
+	kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
+	file->private_data = NULL;
+
+	return 0;
+}
+
+static const struct file_operations debugfs_stats_ops = {
+	.open = smsdvb_stats_open,
+	.read = smsdvb_stats_read,
+	.release = smsdvb_stats_release,
+	.llseek = generic_file_llseek,
+};
+
+/*
+ * Functions used by smsdvb, in order to create the interfaces
+ */
+
+int smsdvb_debugfs_create(struct smsdvb_client_t *client)
+{
+	struct smscore_device_t *coredev = client->coredev;
+	struct dentry *d;
+	struct smsdvb_debugfs *debug_data;
+
+	if (!smsdvb_debugfs_usb_root || !coredev->is_usb_device)
+		return -ENODEV;
+
+	client->debugfs = debugfs_create_dir(coredev->devpath,
+					     smsdvb_debugfs_usb_root);
+	if (IS_ERR_OR_NULL(client->debugfs)) {
+		pr_info("Unable to create debugfs %s directory.\n",
+			coredev->devpath);
+		return -ENODEV;
+	}
+
+	d = debugfs_create_file("stats", S_IRUGO | S_IWUSR, client->debugfs,
+				client, &debugfs_stats_ops);
+	if (!d) {
+		debugfs_remove(client->debugfs);
+		return -ENOMEM;
+	}
+
+	debug_data = kzalloc(sizeof(*client->debug_data), GFP_KERNEL);
+	if (!debug_data)
+		return -ENOMEM;
+
+	client->debug_data        = debug_data;
+	client->prt_dvb_stats     = smsdvb_print_dvb_stats;
+	client->prt_isdb_stats    = smsdvb_print_isdb_stats;
+	client->prt_isdb_stats_ex = smsdvb_print_isdb_stats_ex;
+
+	init_waitqueue_head(&debug_data->stats_queue);
+	spin_lock_init(&debug_data->lock);
+	kref_init(&debug_data->refcount);
+
+	return 0;
+}
+
+void smsdvb_debugfs_release(struct smsdvb_client_t *client)
+{
+	if (!client->debugfs)
+		return;
+
+printk("%s\n", __func__);
+
+	client->prt_dvb_stats     = NULL;
+	client->prt_isdb_stats    = NULL;
+	client->prt_isdb_stats_ex = NULL;
+
+	debugfs_remove_recursive(client->debugfs);
+	kref_put(&client->debug_data->refcount, smsdvb_debugfs_data_release);
+
+	client->debug_data = NULL;
+	client->debugfs = NULL;
+}
+
+int smsdvb_debugfs_register(void)
+{
+	struct dentry *d;
+
+	/*
+	 * FIXME: This was written to debug Siano USB devices. So, it creates
+	 * the debugfs node under <debugfs>/usb.
+	 * A similar logic would be needed for Siano sdio devices, but, in that
+	 * case, usb_debug_root is not a good choice.
+	 *
+	 * Perhaps the right fix here would be to create another sysfs root
+	 * node for sdio-based boards, but this may need some logic at sdio
+	 * subsystem.
+	 */
+	d = debugfs_create_dir("smsdvb", usb_debug_root);
+	if (IS_ERR_OR_NULL(d)) {
+		sms_err("Couldn't create sysfs node for smsdvb");
+		return PTR_ERR(d);
+	} else {
+		smsdvb_debugfs_usb_root = d;
+	}
+	return 0;
+}
+
+void smsdvb_debugfs_unregister(void)
+{
+	if (smsdvb_debugfs_usb_root)
+		debugfs_remove_recursive(smsdvb_debugfs_usb_root);
+	smsdvb_debugfs_usb_root = NULL;
+}

drivers/media/common/siano/smsdvb.c → drivers/media/common/siano/smsdvb-main.c

@@ -22,7 +22,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/init.h>
-#include <linux/debugfs.h>
 
 #include "dmxdev.h"
 #include "dvbdev.h"
@@ -32,38 +31,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "smscoreapi.h"
 #include "sms-cards.h"
 
-DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
-
-struct smsdvb_client_t {
-	struct list_head entry;
-
-	struct smscore_device_t *coredev;
-	struct smscore_client_t *smsclient;
-
-	struct dvb_adapter      adapter;
-	struct dvb_demux        demux;
-	struct dmxdev           dmxdev;
-	struct dvb_frontend     frontend;
-
-	fe_status_t             fe_status;
+#include "smsdvb.h"
 
-	struct completion       tune_done;
-	struct completion       stats_done;
-
-	int last_per;
-
-	int legacy_ber, legacy_per;
-
-	int event_fe_state;
-	int event_unc_state;
-
-	/* Stats debugfs data */
-	struct dentry		*debugfs;
-	char			*stats_data;
-	atomic_t		stats_count;
-	bool			stats_was_read;
-	wait_queue_head_t	stats_queue;
-};
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
 
 static struct list_head g_smsdvb_clients;
 static struct mutex g_smsdvb_clientslock;
@@ -72,39 +42,6 @@ static int sms_dbg;
 module_param_named(debug, sms_dbg, int, 0644);
 MODULE_PARM_DESC(debug, "set debug level (info=1, adv=2 (or-able))");
 
-/*
- * This struct is a mix of RECEPTION_STATISTICS_EX_S and SRVM_SIGNAL_STATUS_S.
- * It was obtained by comparing the way it was filled by the original code
- */
-struct RECEPTION_STATISTICS_PER_SLICES_S {
-	u32 result;
-	u32 snr;
-	s32 inBandPower;
-	u32 tsPackets;
-	u32 etsPackets;
-	u32 constellation;
-	u32 hpCode;
-	u32 tpsSrvIndLP;
-	u32 tpsSrvIndHP;
-	u32 cellId;
-	u32 reason;
-	u32 requestId;
-	u32 ModemState;		/* from SMSHOSTLIB_DVB_MODEM_STATE_ET */
-
-	u32 BER;		/* Post Viterbi BER [1E-5] */
-	s32 RSSI;		/* dBm */
-	s32 CarrierOffset;	/* Carrier Offset in bin/1024 */
-
-	u32 IsRfLocked;		/* 0 - not locked, 1 - locked */
-	u32 IsDemodLocked;	/* 0 - not locked, 1 - locked */
-
-	u32 BERBitCount;	/* Total number of SYNC bits. */
-	u32 BERErrorCount;	/* Number of erronous SYNC bits. */
-
-	s32 MRC_SNR;		/* dB */
-	s32 MRC_InBandPwr;	/* In band power in dBM */
-	s32 MRC_RSSI;		/* dBm */
-};
 
 u32 sms_to_bw_table[] = {
 	[BW_8_MHZ]		= 8000000,
@@ -148,359 +85,6 @@ u32 sms_to_modulation_table[] = {
 	[3] = DQPSK,
 };
 
-static struct dentry *smsdvb_debugfs;
-
-static void smsdvb_print_dvb_stats(struct smsdvb_client_t *client,
-				   struct SMSHOSTLIB_STATISTICS_ST *p)
-{
-	int n = 0;
-	char *buf;
-
-	if (!client->stats_data || atomic_read(&client->stats_count))
-		return;
-
-	buf = client->stats_data;
-
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsRfLocked = %d\n", p->IsRfLocked);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsDemodLocked = %d\n", p->IsDemodLocked);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsExternalLNAOn = %d\n", p->IsExternalLNAOn);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "SNR = %d\n", p->SNR);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "BER = %d\n", p->BER);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "FIB_CRC = %d\n", p->FIB_CRC);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "TS_PER = %d\n", p->TS_PER);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "MFER = %d\n", p->MFER);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "RSSI = %d\n", p->RSSI);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "InBandPwr = %d\n", p->InBandPwr);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "CarrierOffset = %d\n", p->CarrierOffset);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "ModemState = %d\n", p->ModemState);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "Frequency = %d\n", p->Frequency);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "Bandwidth = %d\n", p->Bandwidth);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "TransmissionMode = %d\n", p->TransmissionMode);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "ModemState = %d\n", p->ModemState);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "GuardInterval = %d\n", p->GuardInterval);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "CodeRate = %d\n", p->CodeRate);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "LPCodeRate = %d\n", p->LPCodeRate);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "Hierarchy = %d\n", p->Hierarchy);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "Constellation = %d\n", p->Constellation);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "BurstSize = %d\n", p->BurstSize);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "BurstDuration = %d\n", p->BurstDuration);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "BurstCycleTime = %d\n", p->BurstCycleTime);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "CalculatedBurstCycleTime = %d\n",
-		      p->CalculatedBurstCycleTime);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumOfRows = %d\n", p->NumOfRows);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumOfPaddCols = %d\n", p->NumOfPaddCols);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumOfPunctCols = %d\n", p->NumOfPunctCols);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "ErrorTSPackets = %d\n", p->ErrorTSPackets);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "TotalTSPackets = %d\n", p->TotalTSPackets);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumOfValidMpeTlbs = %d\n", p->NumOfValidMpeTlbs);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumOfInvalidMpeTlbs = %d\n", p->NumOfInvalidMpeTlbs);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumOfCorrectedMpeTlbs = %d\n", p->NumOfCorrectedMpeTlbs);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "BERErrorCount = %d\n", p->BERErrorCount);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "BERBitCount = %d\n", p->BERBitCount);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "SmsToHostTxErrors = %d\n", p->SmsToHostTxErrors);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "PreBER = %d\n", p->PreBER);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "CellId = %d\n", p->CellId);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "DvbhSrvIndHP = %d\n", p->DvbhSrvIndHP);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "DvbhSrvIndLP = %d\n", p->DvbhSrvIndLP);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumMPEReceived = %d\n", p->NumMPEReceived);
-
-	atomic_set(&client->stats_count, n);
-	wake_up(&client->stats_queue);
-}
-
-static void smsdvb_print_isdb_stats(struct smsdvb_client_t *client,
-				    struct SMSHOSTLIB_STATISTICS_ISDBT_ST *p)
-{
-	int i, n = 0;
-	char *buf;
-
-	if (!client->stats_data || atomic_read(&client->stats_count))
-		return;
-
-	buf = client->stats_data;
-
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsRfLocked = %d\t\t", p->IsRfLocked);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsDemodLocked = %d\t", p->IsDemodLocked);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsExternalLNAOn = %d\n", p->IsExternalLNAOn);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "SNR = %d dB\t\t", p->SNR);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "RSSI = %d dBm\t\t", p->RSSI);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "InBandPwr = %d dBm\n", p->InBandPwr);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "CarrierOffset = %d\t", p->CarrierOffset);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "Bandwidth = %d\t\t", p->Bandwidth);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "Frequency = %d Hz\n", p->Frequency);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "TransmissionMode = %d\t", p->TransmissionMode);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "ModemState = %d\t\t", p->ModemState);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "GuardInterval = %d\n", p->GuardInterval);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "SystemType = %d\t\t", p->SystemType);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "PartialReception = %d\t", p->PartialReception);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumOfLayers = %d\n", p->NumOfLayers);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "SmsToHostTxErrors = %d\n", p->SmsToHostTxErrors);
-
-	for (i = 0; i < 3; i++) {
-		if (p->LayerInfo[i].NumberOfSegments < 1 ||
-		    p->LayerInfo[i].NumberOfSegments > 13)
-			continue;
-
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\nLayer %d\n", i);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tCodeRate = %d\t",
-			      p->LayerInfo[i].CodeRate);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "Constellation = %d\n",
-			      p->LayerInfo[i].Constellation);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tBER = %-5d\t",
-			      p->LayerInfo[i].BER);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tBERErrorCount = %-5d\t",
-			      p->LayerInfo[i].BERErrorCount);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "BERBitCount = %-5d\n",
-			      p->LayerInfo[i].BERBitCount);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tPreBER = %-5d\t",
-			      p->LayerInfo[i].PreBER);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tTS_PER = %-5d\n",
-			      p->LayerInfo[i].TS_PER);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tErrorTSPackets = %-5d\t",
-			      p->LayerInfo[i].ErrorTSPackets);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "TotalTSPackets = %-5d\t",
-			      p->LayerInfo[i].TotalTSPackets);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "TILdepthI = %d\n",
-			      p->LayerInfo[i].TILdepthI);
-		n += snprintf(&buf[n], PAGE_SIZE - n,
-			      "\tNumberOfSegments = %d\t",
-			      p->LayerInfo[i].NumberOfSegments);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "TMCCErrors = %d\n",
-			      p->LayerInfo[i].TMCCErrors);
-	}
-
-	atomic_set(&client->stats_count, n);
-	wake_up(&client->stats_queue);
-}
-
-static void
-smsdvb_print_isdb_stats_ex(struct smsdvb_client_t *client,
-			   struct SMSHOSTLIB_STATISTICS_ISDBT_EX_ST *p)
-{
-	int i, n = 0;
-	char *buf;
-
-	if (!client->stats_data || atomic_read(&client->stats_count))
-		return;
-
-	buf = client->stats_data;
-
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsRfLocked = %d\t\t", p->IsRfLocked);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsDemodLocked = %d\t", p->IsDemodLocked);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "IsExternalLNAOn = %d\n", p->IsExternalLNAOn);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "SNR = %d dB\t\t", p->SNR);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "RSSI = %d dBm\t\t", p->RSSI);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "InBandPwr = %d dBm\n", p->InBandPwr);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "CarrierOffset = %d\t", p->CarrierOffset);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "Bandwidth = %d\t\t", p->Bandwidth);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "Frequency = %d Hz\n", p->Frequency);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "TransmissionMode = %d\t", p->TransmissionMode);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "ModemState = %d\t\t", p->ModemState);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "GuardInterval = %d\n", p->GuardInterval);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "SystemType = %d\t\t", p->SystemType);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "PartialReception = %d\t", p->PartialReception);
-	n += snprintf(&buf[n], PAGE_SIZE - n,
-		      "NumOfLayers = %d\n", p->NumOfLayers);
-	n += snprintf(&buf[n], PAGE_SIZE - n, "SegmentNumber = %d\t",
-		      p->SegmentNumber);
-	n += snprintf(&buf[n], PAGE_SIZE - n, "TuneBW = %d\n",
-		      p->TuneBW);
-
-	for (i = 0; i < 3; i++) {
-		if (p->LayerInfo[i].NumberOfSegments < 1 ||
-		    p->LayerInfo[i].NumberOfSegments > 13)
-			continue;
-
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\nLayer %d\n", i);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tCodeRate = %d\t",
-			      p->LayerInfo[i].CodeRate);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "Constellation = %d\n",
-			      p->LayerInfo[i].Constellation);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tBER = %-5d\t",
-			      p->LayerInfo[i].BER);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tBERErrorCount = %-5d\t",
-			      p->LayerInfo[i].BERErrorCount);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "BERBitCount = %-5d\n",
-			      p->LayerInfo[i].BERBitCount);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tPreBER = %-5d\t",
-			      p->LayerInfo[i].PreBER);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tTS_PER = %-5d\n",
-			      p->LayerInfo[i].TS_PER);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "\tErrorTSPackets = %-5d\t",
-			      p->LayerInfo[i].ErrorTSPackets);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "TotalTSPackets = %-5d\t",
-			      p->LayerInfo[i].TotalTSPackets);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "TILdepthI = %d\n",
-			      p->LayerInfo[i].TILdepthI);
-		n += snprintf(&buf[n], PAGE_SIZE - n,
-			      "\tNumberOfSegments = %d\t",
-			      p->LayerInfo[i].NumberOfSegments);
-		n += snprintf(&buf[n], PAGE_SIZE - n, "TMCCErrors = %d\n",
-			      p->LayerInfo[i].TMCCErrors);
-	}
-
-	atomic_set(&client->stats_count, n);
-	wake_up(&client->stats_queue);
-}
-
-static int smsdvb_stats_open(struct inode *inode, struct file *file)
-{
-	struct smsdvb_client_t *client = inode->i_private;
-
-	atomic_set(&client->stats_count, 0);
-	client->stats_was_read = false;
-
-	init_waitqueue_head(&client->stats_queue);
-
-	client->stats_data = kmalloc(PAGE_SIZE, GFP_KERNEL);
-	if (client->stats_data == NULL)
-		return -ENOMEM;
-
-	file->private_data = client;
-
-	return 0;
-}
-
-static ssize_t smsdvb_stats_read(struct file *file, char __user *user_buf,
-				      size_t nbytes, loff_t *ppos)
-{
-	struct smsdvb_client_t *client = file->private_data;
-
-	if (!client->stats_data || client->stats_was_read)
-		return 0;
-
-	wait_event_interruptible(client->stats_queue,
-				 atomic_read(&client->stats_count));
-
-	return simple_read_from_buffer(user_buf, nbytes, ppos,
-				       client->stats_data,
-				       atomic_read(&client->stats_count));
-
-	client->stats_was_read = true;
-}
-
-static int smsdvb_stats_release(struct inode *inode, struct file *file)
-{
-	struct smsdvb_client_t *client = file->private_data;
-
-	kfree(client->stats_data);
-	client->stats_data = NULL;
-
-	return 0;
-}
-
-static const struct file_operations debugfs_stats_ops = {
-	.open = smsdvb_stats_open,
-	.read = smsdvb_stats_read,
-	.release = smsdvb_stats_release,
-	.llseek = generic_file_llseek,
-};
-
-static int create_stats_debugfs(struct smsdvb_client_t *client)
-{
-	struct smscore_device_t *coredev = client->coredev;
-	struct dentry *d;
-
-	if (!smsdvb_debugfs)
-		return -ENODEV;
-
-	client->debugfs = debugfs_create_dir(coredev->devpath, smsdvb_debugfs);
-	if (IS_ERR_OR_NULL(client->debugfs)) {
-		sms_info("Unable to create debugfs %s directory.\n",
-			 coredev->devpath);
-		return -ENODEV;
-	}
-
-	d = debugfs_create_file("stats", S_IRUGO | S_IWUSR, client->debugfs,
-				client, &debugfs_stats_ops);
-	if (!d) {
-		debugfs_remove(client->debugfs);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-static void release_stats_debugfs(struct smsdvb_client_t *client)
-{
-	if (!client->debugfs)
-		return;
-
-	debugfs_remove_recursive(client->debugfs);
-
-	client->debugfs = NULL;
-}
 
 /* Events that may come from DVB v3 adapter */
 static void sms_board_dvb3_event(struct smsdvb_client_t *client,
@@ -708,7 +292,8 @@ static void smsdvb_update_dvb_stats(struct smsdvb_client_t *client,
 	struct dvb_frontend *fe = &client->frontend;
 	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
 
-	smsdvb_print_dvb_stats(client, p);
+	if (client->prt_dvb_stats)
+		client->prt_dvb_stats(client->debug_data, p);
 
 	client->fe_status = sms_to_status(p->IsDemodLocked, p->IsRfLocked);
 
@@ -758,7 +343,8 @@ static void smsdvb_update_isdbt_stats(struct smsdvb_client_t *client,
 	struct SMSHOSTLIB_ISDBT_LAYER_STAT_ST *lr;
 	int i, n_layers;
 
-	smsdvb_print_isdb_stats(client, p);
+	if (client->prt_isdb_stats)
+		client->prt_isdb_stats(client->debug_data, p);
 
 	/* Update ISDB-T transmission parameters */
 	c->frequency = p->Frequency;
@@ -834,7 +420,8 @@ static void smsdvb_update_isdbt_stats_ex(struct smsdvb_client_t *client,
 	struct SMSHOSTLIB_ISDBT_LAYER_STAT_ST *lr;
 	int i, n_layers;
 
-	smsdvb_print_isdb_stats_ex(client, p);
+	if (client->prt_isdb_stats_ex)
+		client->prt_isdb_stats_ex(client->debug_data, p);
 
 	/* Update ISDB-T transmission parameters */
 	c->frequency = p->Frequency;
@@ -998,7 +585,7 @@ static void smsdvb_unregister_client(struct smsdvb_client_t *client)
 
 	list_del(&client->entry);
 
-	release_stats_debugfs(client);
+	smsdvb_debugfs_release(client);
 	smscore_unregister_client(client->smsclient);
 	dvb_unregister_frontend(&client->frontend);
 	dvb_dmxdev_release(&client->dmxdev);
@@ -1288,6 +875,7 @@ static int smsdvb_isdbt_set_frontend(struct dvb_frontend *fe)
 	struct sms_board *board = sms_get_board(board_id);
 	enum sms_device_type_st type = board->type;
 	int ret;
+
 	struct {
 		struct SmsMsgHdr_ST	Msg;
 		u32		Data[4];
@@ -1536,7 +1124,7 @@ static int smsdvb_hotplug(struct smscore_device_t *coredev,
 	sms_info("success");
 	sms_board_setup(coredev);
 
-	if (create_stats_debugfs(client) < 0)
+	if (smsdvb_debugfs_create(client) < 0)
 		sms_info("failed to create debugfs node");
 
 	return 0;
@@ -1561,16 +1149,11 @@ static int smsdvb_hotplug(struct smscore_device_t *coredev,
 static int __init smsdvb_module_init(void)
 {
 	int rc;
-	struct dentry *d;
 
 	INIT_LIST_HEAD(&g_smsdvb_clients);
 	kmutex_init(&g_smsdvb_clientslock);
 
-	d = debugfs_create_dir("smsdvb", usb_debug_root);
-	if (IS_ERR_OR_NULL(d))
-		sms_err("Couldn't create sysfs node for smsdvb");
-	else
-		smsdvb_debugfs = d;
+	smsdvb_debugfs_register();
 
 	rc = smscore_register_hotplug(smsdvb_hotplug);
 
@@ -1586,11 +1169,9 @@ static void __exit smsdvb_module_exit(void)
 	kmutex_lock(&g_smsdvb_clientslock);
 
 	while (!list_empty(&g_smsdvb_clients))
-	       smsdvb_unregister_client(
-			(struct smsdvb_client_t *) g_smsdvb_clients.next);
+		smsdvb_unregister_client((struct smsdvb_client_t *)g_smsdvb_clients.next);
 
-	if (smsdvb_debugfs)
-		debugfs_remove_recursive(smsdvb_debugfs);
+	smsdvb_debugfs_unregister();
 
 	kmutex_unlock(&g_smsdvb_clientslock);
 }

drivers/media/common/siano/smsdvb.h

+/***********************************************************************
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+
+ *  This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ ***********************************************************************/
+
+struct smsdvb_debugfs;
+struct smsdvb_client_t;
+
+typedef void (*sms_prt_dvb_stats_t)(struct smsdvb_debugfs *debug_data,
+				    struct SMSHOSTLIB_STATISTICS_ST *p);
+
+typedef void (*sms_prt_isdb_stats_t)(struct smsdvb_debugfs *debug_data,
+				     struct SMSHOSTLIB_STATISTICS_ISDBT_ST *p);
+
+typedef void (*sms_prt_isdb_stats_ex_t)
+			(struct smsdvb_debugfs *debug_data,
+			 struct SMSHOSTLIB_STATISTICS_ISDBT_EX_ST *p);
+
+
+struct smsdvb_client_t {
+	struct list_head entry;
+
+	struct smscore_device_t *coredev;
+	struct smscore_client_t *smsclient;
+
+	struct dvb_adapter      adapter;
+	struct dvb_demux        demux;
+	struct dmxdev           dmxdev;
+	struct dvb_frontend     frontend;
+
+	fe_status_t             fe_status;
+
+	struct completion       tune_done;
+	struct completion       stats_done;
+
+	int last_per;
+
+	int legacy_ber, legacy_per;
+
+	int event_fe_state;
+	int event_unc_state;
+
+	/* Stats debugfs data */
+	struct dentry		*debugfs;
+
+	struct smsdvb_debugfs	*debug_data;
+
+	sms_prt_dvb_stats_t	prt_dvb_stats;
+	sms_prt_isdb_stats_t	prt_isdb_stats;
+	sms_prt_isdb_stats_ex_t	prt_isdb_stats_ex;
+};
+
+/*
+ * This struct is a mix of RECEPTION_STATISTICS_EX_S and SRVM_SIGNAL_STATUS_S.
+ * It was obtained by comparing the way it was filled by the original code
+ */
+struct RECEPTION_STATISTICS_PER_SLICES_S {
+	u32 result;
+	u32 snr;
+	s32 inBandPower;
+	u32 tsPackets;
+	u32 etsPackets;
+	u32 constellation;
+	u32 hpCode;
+	u32 tpsSrvIndLP;
+	u32 tpsSrvIndHP;
+	u32 cellId;
+	u32 reason;
+	u32 requestId;
+	u32 ModemState;		/* from SMSHOSTLIB_DVB_MODEM_STATE_ET */
+
+	u32 BER;		/* Post Viterbi BER [1E-5] */
+	s32 RSSI;		/* dBm */
+	s32 CarrierOffset;	/* Carrier Offset in bin/1024 */
+
+	u32 IsRfLocked;		/* 0 - not locked, 1 - locked */
+	u32 IsDemodLocked;	/* 0 - not locked, 1 - locked */
+
+	u32 BERBitCount;	/* Total number of SYNC bits. */
+	u32 BERErrorCount;	/* Number of erronous SYNC bits. */
+
+	s32 MRC_SNR;		/* dB */
+	s32 MRC_InBandPwr;	/* In band power in dBM */
+	s32 MRC_RSSI;		/* dBm */
+};
+
+/* From smsdvb-debugfs.c */
+#ifdef CONFIG_SMS_SIANO_DEBUGFS
+
+int smsdvb_debugfs_create(struct smsdvb_client_t *client);
+void smsdvb_debugfs_release(struct smsdvb_client_t *client);
+int smsdvb_debugfs_register(void);
+void smsdvb_debugfs_unregister(void);
+
+#else
+
+static inline int smsdvb_debugfs_create(struct smsdvb_client_t *client)
+{
+	return 0;
+}
+
+static inline void smsdvb_debugfs_release(struct smsdvb_client_t *client) {}
+
+static inline int smsdvb_debugfs_register(void)
+{
+	return 0;
+};
+
+static inline void smsdvb_debugfs_unregister(void) {};
+
+#endif
+

drivers/media/usb/siano/smsusb.c

@@ -412,6 +412,8 @@ static int smsusb_init_device(struct usb_interface *intf, int board_id)
 
 	smscore_set_board_id(dev->coredev, board_id);
 
+	dev->coredev->is_usb_device = true;
+
 	/* initialize urbs */
 	for (i = 0; i < MAX_URBS; i++) {
 		dev->surbs[i].dev = dev;