Commit 503efe5c authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

[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: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 3f6b87cf

drivers/media/common/siano/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -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

+5 −0
Original line number Diff line number Diff line 
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

+6 −0
Original line number Diff line number Diff line
@@ -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

0 → 100644
+503 −0
Original line number Diff line number Diff line 
/***********************************************************************

 *

 * 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

+14 −433

File changed and moved.

Preview size limit exceeded, changes collapsed.

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