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hwmon: (ina2xx) fix sysfs shunt resistor read access 

[ Upstream commit 3ad867001c ]

fix the sysfs shunt resistor read access: return the shunt resistor
value, not the calibration register contents.

update email address

Signed-off-by: Lothar Felten <lothar.felten@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Lothar Felten 2018-08-14 09:09:37 +02:00 committed by Greg Kroah-Hartman
parent 59f5838cc9
commit 0647ce03bd
3 changed files with 13 additions and 4 deletions
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2
Documentation/hwmon/ina2xx
View File

@ -32,7 +32,7 @@ Supported chips:
Datasheet: Publicly available at the Texas Instruments website
http://www.ti.com/
Author: Lothar Felten <l-felten@ti.com>
Author: Lothar Felten <lothar.felten@gmail.com>
Description
-----------

13
drivers/hwmon/ina2xx.c
View File

@ -17,7 +17,7 @@
* Bi-directional Current/Power Monitor with I2C Interface
* Datasheet: http://www.ti.com/product/ina230
*
* Copyright (C) 2012 Lothar Felten <l-felten@ti.com>
* Copyright (C) 2012 Lothar Felten <lothar.felten@gmail.com>
* Thanks to Jan Volkering
*
* This program is free software; you can redistribute it and/or modify
@ -329,6 +329,15 @@ static int ina2xx_set_shunt(struct ina2xx_data *data, long val)
return 0;
}
static ssize_t ina2xx_show_shunt(struct device *dev,
struct device_attribute *da,
char *buf)
{
struct ina2xx_data *data = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE, "%li\n", data->rshunt);
}
static ssize_t ina2xx_store_shunt(struct device *dev,
struct device_attribute *da,
const char *buf, size_t count)
@ -403,7 +412,7 @@ static SENSOR_DEVICE_ATTR(power1_input, S_IRUGO, ina2xx_show_value, NULL,
/* shunt resistance */
static SENSOR_DEVICE_ATTR(shunt_resistor, S_IRUGO | S_IWUSR,
ina2xx_show_value, ina2xx_store_shunt,
ina2xx_show_shunt, ina2xx_store_shunt,
INA2XX_CALIBRATION);
/* update interval (ina226 only) */

2
include/linux/platform_data/ina2xx.h
View File

@ -1,7 +1,7 @@
/*
* Driver for Texas Instruments INA219, INA226 power monitor chips
*
* Copyright (C) 2012 Lothar Felten <l-felten@ti.com>
* Copyright (C) 2012 Lothar Felten <lothar.felten@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as