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Commit 1f0f1184 authored by Subbaraman Narayanamurthy's avatar Subbaraman Narayanamurthy
Browse files

qcom: storm-watch: add support to reset storm count 



There are some circumstances where we have to reset the storm
watch interrupt count. Add support for it.

Change-Id: Iacbeb3258d53010aab8ba881d10de773fe54dd93
Signed-off-by: default avatarSubbaraman Narayanamurthy <subbaram@codeaurora.org>
parent 580b03cf

drivers/power/supply/qcom/qpnp-smb2.c

+1 −0
Original line number Diff line number Diff line
@@ -1881,6 +1881,7 @@ static int smb2_request_interrupt(struct smb2 *chip, 
	irq_data->parent_data = chip;

	irq_data->name = irq_name;

	irq_data->storm_data = smb2_irqs[irq_index].storm_data;

	mutex_init(&irq_data->storm_data.storm_lock);



	rc = devm_request_threaded_irq(chg->dev, irq, NULL,

					smb2_irqs[irq_index].handler,

drivers/power/supply/qcom/smb138x-charger.c

+1 −0
Original line number Diff line number Diff line
@@ -1197,6 +1197,7 @@ static int smb138x_request_interrupt(struct smb138x *chip, 
	irq_data->parent_data = chip;

	irq_data->name = irq_name;

	irq_data->storm_data = smb138x_irqs[irq_index].storm_data;

	mutex_init(&irq_data->storm_data.storm_lock);



	rc = devm_request_threaded_irq(chg->dev, irq, NULL,

					smb138x_irqs[irq_index].handler,

drivers/power/supply/qcom/storm-watch.c

+10 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2016 The Linux Foundation. All rights reserved.

/* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -39,6 +39,7 @@ bool is_storming(struct storm_watch *data) 
	if (data->storm_period_ms <= 0)

		return false;



	mutex_lock(&data->storm_lock);

	curr_kt = ktime_get_boottime();

	delta_kt = ktime_sub(curr_kt, data->last_kt);
@@ -53,5 +54,13 @@ bool is_storming(struct storm_watch *data) 
	}



	data->last_kt = curr_kt;

	mutex_unlock(&data->storm_lock);

	return is_storming;

}



void reset_storm_count(struct storm_watch *data)

{

	mutex_lock(&data->storm_lock);

	data->storm_count = 0;

	mutex_unlock(&data->storm_lock);

}

drivers/power/supply/qcom/storm-watch.h

+10 −6
Original line number Diff line number Diff line 
/* Copyright (c) 2016 The Linux Foundation. All rights reserved.

/* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -13,6 +13,7 @@ 
#ifndef __STORM_WATCH_H

#define __STORM_WATCH_H

#include <linux/ktime.h>

#include <linux/mutex.h>



/**

 * Data used to track an event storm.
@@ -23,6 +24,7 @@ 
 * @max_storm_count: The number of chained events required to trigger a storm.

 * @storm_count:     The current number of chained events.

 * @last_kt:         Kernel time of the last event seen.

 * @storm_lock:      Mutex lock to protect storm_watch data.

 */

struct storm_watch {

	bool		enabled;
@@ -30,7 +32,9 @@ struct storm_watch { 
	int		max_storm_count;

	int		storm_count;

	ktime_t		last_kt;

	struct mutex	storm_lock;

};



bool is_storming(struct storm_watch *data);

void reset_storm_count(struct storm_watch *data);

#endif