Release 4.8 drivers/hwmon/lm90.c

/*
 * lm90.c - Part of lm_sensors, Linux kernel modules for hardware
 *          monitoring
 * Copyright (C) 2003-2010  Jean Delvare <jdelvare@suse.de>
 *
 * Based on the lm83 driver. The LM90 is a sensor chip made by National
 * Semiconductor. It reports up to two temperatures (its own plus up to
 * one external one) with a 0.125 deg resolution (1 deg for local
 * temperature) and a 3-4 deg accuracy.
 *
 * This driver also supports the LM89 and LM99, two other sensor chips
 * made by National Semiconductor. Both have an increased remote
 * temperature measurement accuracy (1 degree), and the LM99
 * additionally shifts remote temperatures (measured and limits) by 16
 * degrees, which allows for higher temperatures measurement.
 * Note that there is no way to differentiate between both chips.
 * When device is auto-detected, the driver will assume an LM99.
 *
 * This driver also supports the LM86, another sensor chip made by
 * National Semiconductor. It is exactly similar to the LM90 except it
 * has a higher accuracy.
 *
 * This driver also supports the ADM1032, a sensor chip made by Analog
 * Devices. That chip is similar to the LM90, with a few differences
 * that are not handled by this driver. Among others, it has a higher
 * accuracy than the LM90, much like the LM86 does.
 *
 * This driver also supports the MAX6657, MAX6658 and MAX6659 sensor
 * chips made by Maxim. These chips are similar to the LM86.
 * Note that there is no easy way to differentiate between the three
 * variants. We use the device address to detect MAX6659, which will result
 * in a detection as max6657 if it is on address 0x4c. The extra address
 * and features of the MAX6659 are only supported if the chip is configured
 * explicitly as max6659, or if its address is not 0x4c.
 * These chips lack the remote temperature offset feature.
 *
 * This driver also supports the MAX6646, MAX6647, MAX6648, MAX6649 and
 * MAX6692 chips made by Maxim.  These are again similar to the LM86,
 * but they use unsigned temperature values and can report temperatures
 * from 0 to 145 degrees.
 *
 * This driver also supports the MAX6680 and MAX6681, two other sensor
 * chips made by Maxim. These are quite similar to the other Maxim
 * chips. The MAX6680 and MAX6681 only differ in the pinout so they can
 * be treated identically.
 *
 * This driver also supports the MAX6695 and MAX6696, two other sensor
 * chips made by Maxim. These are also quite similar to other Maxim
 * chips, but support three temperature sensors instead of two. MAX6695
 * and MAX6696 only differ in the pinout so they can be treated identically.
 *
 * This driver also supports ADT7461 and ADT7461A from Analog Devices as well as
 * NCT1008 from ON Semiconductor. The chips are supported in both compatibility
 * and extended mode. They are mostly compatible with LM90 except for a data
 * format difference for the temperature value registers.
 *
 * This driver also supports the SA56004 from Philips. This device is
 * pin-compatible with the LM86, the ED/EDP parts are also address-compatible.
 *
 * This driver also supports the G781 from GMT. This device is compatible
 * with the ADM1032.
 *
 * This driver also supports TMP451 from Texas Instruments. This device is
 * supported in both compatibility and extended mode. It's mostly compatible
 * with ADT7461 except for local temperature low byte register and max
 * conversion rate.
 *
 * Since the LM90 was the first chipset supported by this driver, most
 * comments will refer to this chipset, but are actually general and
 * concern all supported chipsets, unless mentioned otherwise.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/sysfs.h>
#include <linux/interrupt.h>
#include <linux/regulator/consumer.h>

/*
 * Addresses to scan
 * Address is fully defined internally and cannot be changed except for
 * MAX6659, MAX6680 and MAX6681.
 * LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, ADT7461A, MAX6649,
 * MAX6657, MAX6658, NCT1008 and W83L771 have address 0x4c.
 * ADM1032-2, ADT7461-2, ADT7461A-2, LM89-1, LM99-1, MAX6646, and NCT1008D
 * have address 0x4d.
 * MAX6647 has address 0x4e.
 * MAX6659 can have address 0x4c, 0x4d or 0x4e.
 * MAX6680 and MAX6681 can have address 0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b,
 * 0x4c, 0x4d or 0x4e.
 * SA56004 can have address 0x48 through 0x4F.
 */


static const unsigned short normal_i2c[] = {
	0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x48, 0x49, 0x4a, 0x4b, 0x4c,
	0x4d, 0x4e, 0x4f, I2C_CLIENT_END };










enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
	





max6646, w83l771, max6696, sa56004, g781, tmp451 };

/*
 * The LM90 registers
 */


#define LM90_REG_R_MAN_ID		0xFE

#define LM90_REG_R_CHIP_ID		0xFF

#define LM90_REG_R_CONFIG1		0x03

#define LM90_REG_W_CONFIG1		0x09

#define LM90_REG_R_CONFIG2		0xBF

#define LM90_REG_W_CONFIG2		0xBF

#define LM90_REG_R_CONVRATE		0x04

#define LM90_REG_W_CONVRATE		0x0A

#define LM90_REG_R_STATUS		0x02

#define LM90_REG_R_LOCAL_TEMP		0x00

#define LM90_REG_R_LOCAL_HIGH		0x05

#define LM90_REG_W_LOCAL_HIGH		0x0B

#define LM90_REG_R_LOCAL_LOW		0x06

#define LM90_REG_W_LOCAL_LOW		0x0C

#define LM90_REG_R_LOCAL_CRIT		0x20

#define LM90_REG_W_LOCAL_CRIT		0x20

#define LM90_REG_R_REMOTE_TEMPH		0x01

#define LM90_REG_R_REMOTE_TEMPL		0x10

#define LM90_REG_R_REMOTE_OFFSH		0x11

#define LM90_REG_W_REMOTE_OFFSH		0x11

#define LM90_REG_R_REMOTE_OFFSL		0x12

#define LM90_REG_W_REMOTE_OFFSL		0x12

#define LM90_REG_R_REMOTE_HIGHH		0x07

#define LM90_REG_W_REMOTE_HIGHH		0x0D

#define LM90_REG_R_REMOTE_HIGHL		0x13

#define LM90_REG_W_REMOTE_HIGHL		0x13

#define LM90_REG_R_REMOTE_LOWH		0x08

#define LM90_REG_W_REMOTE_LOWH		0x0E

#define LM90_REG_R_REMOTE_LOWL		0x14

#define LM90_REG_W_REMOTE_LOWL		0x14

#define LM90_REG_R_REMOTE_CRIT		0x19

#define LM90_REG_W_REMOTE_CRIT		0x19

#define LM90_REG_R_TCRIT_HYST		0x21

#define LM90_REG_W_TCRIT_HYST		0x21

/* MAX6646/6647/6649/6657/6658/6659/6695/6696 registers */


#define MAX6657_REG_R_LOCAL_TEMPL	0x11

#define MAX6696_REG_R_STATUS2		0x12

#define MAX6659_REG_R_REMOTE_EMERG	0x16

#define MAX6659_REG_W_REMOTE_EMERG	0x16

#define MAX6659_REG_R_LOCAL_EMERG	0x17

#define MAX6659_REG_W_LOCAL_EMERG	0x17

/*  SA56004 registers */


#define SA56004_REG_R_LOCAL_TEMPL 0x22


#define LM90_MAX_CONVRATE_MS	16000	
/* Maximum conversion rate in ms */

/* TMP451 registers */

#define TMP451_REG_R_LOCAL_TEMPL	0x15

/*
 * Device flags
 */

#define LM90_FLAG_ADT7461_EXT	(1 << 0) 
/* ADT7461 extended mode        */
/* Device features */

#define LM90_HAVE_OFFSET	(1 << 1) 
/* temperature offset register  */

#define LM90_HAVE_REM_LIMIT_EXT	(1 << 3) 
/* extended remote limit        */

#define LM90_HAVE_EMERGENCY	(1 << 4) 
/* 3rd upper (emergency) limit  */

#define LM90_HAVE_EMERGENCY_ALARM (1 << 5)
/* emergency alarm              */

#define LM90_HAVE_TEMP3		(1 << 6) 
/* 3rd temperature sensor       */

#define LM90_HAVE_BROKEN_ALERT	(1 << 7) 
/* Broken alert         */

/* LM90 status */

#define LM90_STATUS_LTHRM	(1 << 0) 
/* local THERM limit tripped */

#define LM90_STATUS_RTHRM	(1 << 1) 
/* remote THERM limit tripped */

#define LM90_STATUS_ROPEN	(1 << 2) 
/* remote is an open circuit */

#define LM90_STATUS_RLOW	(1 << 3) 
/* remote low temp limit tripped */

#define LM90_STATUS_RHIGH	(1 << 4) 
/* remote high temp limit tripped */

#define LM90_STATUS_LLOW	(1 << 5) 
/* local low temp limit tripped */

#define LM90_STATUS_LHIGH	(1 << 6) 
/* local high temp limit tripped */


#define MAX6696_STATUS2_R2THRM	(1 << 1) 
/* remote2 THERM limit tripped */

#define MAX6696_STATUS2_R2OPEN	(1 << 2) 
/* remote2 is an open circuit */

#define MAX6696_STATUS2_R2LOW	(1 << 3) 
/* remote2 low temp limit tripped */

#define MAX6696_STATUS2_R2HIGH	(1 << 4) 
/* remote2 high temp limit tripped */

#define MAX6696_STATUS2_ROT2	(1 << 5) 
/* remote emergency limit tripped */

#define MAX6696_STATUS2_R2OT2	(1 << 6) 
/* remote2 emergency limit tripped */

#define MAX6696_STATUS2_LOT2	(1 << 7) 
/* local emergency limit tripped */

/*
 * Driver data (common to all clients)
 */


static const struct i2c_device_id lm90_id[] = {
	{ "adm1032", adm1032 },
	{ "adt7461", adt7461 },
	{ "adt7461a", adt7461 },
	{ "g781", g781 },
	{ "lm90", lm90 },
	{ "lm86", lm86 },
	{ "lm89", lm86 },
	{ "lm99", lm99 },
	{ "max6646", max6646 },
	{ "max6647", max6646 },
	{ "max6649", max6646 },
	{ "max6657", max6657 },
	{ "max6658", max6657 },
	{ "max6659", max6659 },
	{ "max6680", max6680 },
	{ "max6681", max6680 },
	{ "max6695", max6696 },
	{ "max6696", max6696 },
	{ "nct1008", adt7461 },
	{ "w83l771", w83l771 },
	{ "sa56004", sa56004 },
	{ "tmp451", tmp451 },
	{ }
};
MODULE_DEVICE_TABLE(i2c, lm90_id);

/*
 * chip type specific parameters
 */

struct lm90_params {
	
u32 flags;		/* Capabilities */
	
u16 alert_alarms;	/* Which alarm bits trigger ALERT# */
				/* Upper 8 bits for max6695/96 */
	
u8 max_convrate;	/* Maximum conversion rate register value */
	
u8 reg_local_ext;	/* Extended local temp register (optional) */
};


static const struct lm90_params lm90_params[] = {
	[adm1032] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
		  | LM90_HAVE_BROKEN_ALERT,
		.alert_alarms = 0x7c,
		.max_convrate = 10,
        },
	[adt7461] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
		  | LM90_HAVE_BROKEN_ALERT,
		.alert_alarms = 0x7c,
		.max_convrate = 10,
        },
	[g781] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
		  | LM90_HAVE_BROKEN_ALERT,
		.alert_alarms = 0x7c,
		.max_convrate = 8,
        },
	[lm86] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
		.alert_alarms = 0x7b,
		.max_convrate = 9,
        },
	[lm90] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
		.alert_alarms = 0x7b,
		.max_convrate = 9,
        },
	[lm99] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
		.alert_alarms = 0x7b,
		.max_convrate = 9,
        },
	[max6646] = {
		.alert_alarms = 0x7c,
		.max_convrate = 6,
		.reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
        },
	[max6657] = {
		.alert_alarms = 0x7c,
		.max_convrate = 8,
		.reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
        },
	[max6659] = {
		.flags = LM90_HAVE_EMERGENCY,
		.alert_alarms = 0x7c,
		.max_convrate = 8,
		.reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
        },
	[max6680] = {
		.flags = LM90_HAVE_OFFSET,
		.alert_alarms = 0x7c,
		.max_convrate = 7,
        },
	[max6696] = {
		.flags = LM90_HAVE_EMERGENCY
		  | LM90_HAVE_EMERGENCY_ALARM | LM90_HAVE_TEMP3,
		.alert_alarms = 0x1c7c,
		.max_convrate = 6,
		.reg_local_ext = MAX6657_REG_R_LOCAL_TEMPL,
        },
	[w83l771] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
		.alert_alarms = 0x7c,
		.max_convrate = 8,
        },
	[sa56004] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT,
		.alert_alarms = 0x7b,
		.max_convrate = 9,
		.reg_local_ext = SA56004_REG_R_LOCAL_TEMPL,
        },
	[tmp451] = {
		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
		  | LM90_HAVE_BROKEN_ALERT,
		.alert_alarms = 0x7c,
		.max_convrate = 9,
		.reg_local_ext = TMP451_REG_R_LOCAL_TEMPL,
        }
};

/*
 * TEMP8 register index
 */

enum lm90_temp8_reg_index {
	
LOCAL_LOW = 0,
	
LOCAL_HIGH,
	
LOCAL_CRIT,
	
REMOTE_CRIT,
	
LOCAL_EMERG,	/* max6659 and max6695/96 */
	
REMOTE_EMERG,	/* max6659 and max6695/96 */
	
REMOTE2_CRIT,	/* max6695/96 only */
	
REMOTE2_EMERG,	/* max6695/96 only */
	
TEMP8_REG_NUM
};

/*
 * TEMP11 register index
 */

enum lm90_temp11_reg_index {
	
REMOTE_TEMP = 0,
	
REMOTE_LOW,
	
REMOTE_HIGH,
	
REMOTE_OFFSET,	/* except max6646, max6657/58/59, and max6695/96 */
	
LOCAL_TEMP,
	
REMOTE2_TEMP,	/* max6695/96 only */
	
REMOTE2_LOW,	/* max6695/96 only */
	
REMOTE2_HIGH,	/* max6695/96 only */
	
TEMP11_REG_NUM
};

/*
 * Client data (each client gets its own)
 */


struct lm90_data {
	
struct i2c_client *client;
	
const struct attribute_group *groups[6];
	
struct mutex update_lock;
	
bool valid;		/* true if register values are valid */
	
unsigned long last_updated; /* in jiffies */
	
int kind;
	
u32 flags;

	
unsigned int update_interval; /* in milliseconds */

	
u8 config_orig;		/* Original configuration register value */
	
u8 convrate_orig;	/* Original conversion rate register value */
	
u16 alert_alarms;	/* Which alarm bits trigger ALERT# */
				/* Upper 8 bits for max6695/96 */
	
u8 max_convrate;	/* Maximum conversion rate */
	
u8 reg_local_ext;	/* local extension register offset */

	/* registers values */
	
s8 temp8[TEMP8_REG_NUM];
	
s16 temp11[TEMP11_REG_NUM];
	
u8 temp_hyst;
	
u16 alarms; /* bitvector (upper 8 bits for max6695/96) */
};

/*
 * Support functions
 */

/*
 * The ADM1032 supports PEC but not on write byte transactions, so we need
 * to explicitly ask for a transaction without PEC.
 */


static inline s32 adm1032_write_byte(struct i2c_client *client, u8 value)
{
	return i2c_smbus_xfer(client->adapter, client->addr,
			      client->flags & ~I2C_CLIENT_PEC,
			      I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
34
80.95%
1
50.00%
nate case
nate case
8
19.05%
1
50.00%
Total
42
100.00%
2
100.00%

/*
 * It is assumed that client->update_lock is held (unless we are in
 * detection or initialization steps). This matters when PEC is enabled,
 * because we don't want the address pointer to change between the write
 * byte and the read byte transactions.
 */


static int lm90_read_reg(struct i2c_client *client, u8 reg)
{
	int err;

	if (client->flags & I2C_CLIENT_PEC) {
		err = adm1032_write_byte(client, reg);
		if (err >= 0)
			err = i2c_smbus_read_byte(client);
	} else
		err = i2c_smbus_read_byte_data(client, reg);

	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
48
77.42%
1
33.33%
nate case
nate case
8
12.90%
1
33.33%
ben hutchings
ben hutchings
6
9.68%
1
33.33%
Total
62
100.00%
3
100.00%



static int lm90_read16(struct i2c_client *client, u8 regh, u8 regl)
{
	int oldh, newh, l;

	/*
         * There is a trick here. We have to read two registers to have the
         * sensor temperature, but we have to beware a conversion could occur
         * between the readings. The datasheet says we should either use
         * the one-shot conversion register, which we don't want to do
         * (disables hardware monitoring) or monitor the busy bit, which is
         * impossible (we can't read the values and monitor that bit at the
         * exact same time). So the solution used here is to read the high
         * byte once, then the low byte, then the high byte again. If the new
         * high byte matches the old one, then we have a valid reading. Else
         * we have to read the low byte again, and now we believe we have a
         * correct reading.
         */
	oldh = lm90_read_reg(client, regh);
	if (oldh < 0)
		return oldh;
	l = lm90_read_reg(client, regl);
	if (l < 0)
		return l;
	newh = lm90_read_reg(client, regh);
	if (newh < 0)
		return newh;
	if (oldh != newh) {
		l = lm90_read_reg(client, regl);
		if (l < 0)
			return l;
	}
	return (newh << 8) | l;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
97
85.09%
2
50.00%
ben hutchings
ben hutchings
16
14.04%
1
25.00%
lucas de marchi
lucas de marchi
1
0.88%
1
25.00%
Total
114
100.00%
4
100.00%

/*
 * client->update_lock must be held when calling this function (unless we are
 * in detection or initialization steps), and while a remote channel other
 * than channel 0 is selected. Also, calling code must make sure to re-select
 * external channel 0 before releasing the lock. This is necessary because
 * various registers have different meanings as a result of selecting a
 * non-default remote channel.
 */


static inline int lm90_select_remote_channel(struct i2c_client *client,
					     struct lm90_data *data,
					     int channel)
{
	int config;

	if (data->kind == max6696) {
		config = lm90_read_reg(client, LM90_REG_R_CONFIG1);
		if (config < 0)
			return config;
		config &= ~0x08;
		if (channel)
			config |= 0x08;
		i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
					  config);
	}
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
64
84.21%
2
66.67%
nate case
nate case
12
15.79%
1
33.33%
Total
76
100.00%
3
100.00%

/*
 * Set conversion rate.
 * client->update_lock must be held when calling this function (unless we are
 * in detection or initialization steps).
 */


static void lm90_set_convrate(struct i2c_client *client, struct lm90_data *data,
			      unsigned int interval)
{
	int i;
	unsigned int update_interval;

	/* Shift calculations to avoid rounding errors */
	interval <<= 6;

	/* find the nearest update rate */
	for (i = 0, update_interval = LM90_MAX_CONVRATE_MS << 6;
	     i < data->max_convrate; i++, update_interval >>= 1)
		if (interval >= update_interval * 3 / 4)
			break;

	i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE, i);
	data->update_interval = DIV_ROUND_CLOSEST(update_interval, 64);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
89
100.00%
1
100.00%
Total
89
100.00%
1
100.00%



static int lm90_update_limits(struct device *dev)
{
	struct lm90_data *data = dev_get_drvdata(dev);
	struct i2c_client *client = data->client;
	int val;

	val = lm90_read_reg(client, LM90_REG_R_LOCAL_CRIT);
	if (val < 0)
		return val;
	data->temp8[LOCAL_CRIT] = val;

	val = lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT);
	if (val < 0)
		return val;
	data->temp8[REMOTE_CRIT] = val;

	val = lm90_read_reg(client, LM90_REG_R_TCRIT_HYST);
	if (val < 0)
		return val;
	data->temp_hyst = val;

	val = lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH);
	if (val < 0)
		return val;
	data->temp11[REMOTE_LOW] = val << 8;

	if (data->flags & LM90_HAVE_REM_LIMIT_EXT) {
		val = lm90_read_reg(client, LM90_REG_R_REMOTE_LOWL);
		if (val < 0)
			return val;
		data->temp11[REMOTE_LOW] |= val;
	}

	val = lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH);
	if (val < 0)
		return val;
	data->temp11[REMOTE_HIGH] = val << 8;

	if (data->flags & LM90_HAVE_REM_LIMIT_EXT) {
		val = lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHL);
		if (val < 0)
			return val;
		data->temp11[REMOTE_HIGH] |= val;
	}

	if (data->flags & LM90_HAVE_OFFSET) {
		val = lm90_read16(client, LM90_REG_R_REMOTE_OFFSH,
				  LM90_REG_R_REMOTE_OFFSL);
		if (val < 0)
			return val;
		data->temp11[REMOTE_OFFSET] = val;
	}

	if (data->flags & LM90_HAVE_EMERGENCY) {
		val = lm90_read_reg(client, MAX6659_REG_R_LOCAL_EMERG);
		if (val < 0)
			return val;
		data->temp8[LOCAL_EMERG] = val;

		val = lm90_read_reg(client, MAX6659_REG_R_REMOTE_EMERG);
		if (val < 0)
			return val;
		data->temp8[REMOTE_EMERG] = val;
	}

	if (data->kind == max6696) {
		val = lm90_select_remote_channel(client, data, 1);
		if (val < 0)
			return val;

		val = lm90_read_reg(client, LM90_REG_R_REMOTE_CRIT);
		if (val < 0)
			return val;
		data->temp8[REMOTE2_CRIT] = val;

		val = lm90_read_reg(client, MAX6659_REG_R_REMOTE_EMERG);
		if (val < 0)
			return val;
		data->temp8[REMOTE2_EMERG] = val;

		val = lm90_read_reg(client, LM90_REG_R_REMOTE_LOWH);
		if (val < 0)
			return val;
		data->temp11[REMOTE2_LOW] = val << 8;

		val = lm90_read_reg(client, LM90_REG_R_REMOTE_HIGHH);
		if (val < 0)
			return val;
		data->temp11[REMOTE2_HIGH] = val << 8;

		lm90_select_remote_channel(client, data, 0);
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
424
84.80%
7
58.33%
jean delvare
jean delvare
35
7.00%
3
25.00%
nate case
nate case
27
5.40%
1
8.33%
ben hutchings
ben hutchings
14
2.80%
1
8.33%
Total
500
100.00%
12
100.00%



static struct lm90_data *lm90_update_device(struct device *dev)
{
	struct lm90_data *data = dev_get_drvdata(dev);
	struct i2c_client *client = data->client;
	unsigned long next_update;
	int val = 0;

	mutex_lock(&data->update_lock);

	if (!data->valid) {
		val = lm90_update_limits(dev);
		if (val < 0)
			goto error;
	}

	next_update = data->last_updated +
		      msecs_to_jiffies(data->update_interval);
	if (time_after(jiffies, next_update) || !data->valid) {
		dev_dbg(&client->dev, "Updating lm90 data.\n");

		data->valid = false;

		val = lm90_read_reg(client, LM90_REG_R_LOCAL_LOW);
		if (val < 0)
			goto error;
		data->temp8[LOCAL_LOW] = val;

		val = lm90_read_reg(client, LM90_REG_R_LOCAL_HIGH);
		if (val < 0)
			goto error;
		data->temp8[LOCAL_HIGH] = val;

		if (data->reg_local_ext) {
			val = lm90_read16(client, LM90_REG_R_LOCAL_TEMP,
					  data->reg_local_ext);
			if (val < 0)
				goto error;
			data->temp11[LOCAL_TEMP] = val;
		} else {
			val = lm90_read_reg(client, LM90_REG_R_LOCAL_TEMP);
			if (val < 0)
				goto error;
			data->temp11[LOCAL_TEMP] = val << 8;
		}
		val = lm90_read16(client, LM90_REG_R_REMOTE_TEMPH,
				  LM90_REG_R_REMOTE_TEMPL);
		if (val < 0)
			goto error;
		data->temp11[REMOTE_TEMP] = val;

		val = lm90_read_reg(client, LM90_REG_R_STATUS);
		if (val < 0)
			goto error;
		data->alarms = val;	/* lower 8 bit of alarms */

		if (data->kind == max6696) {
			val = lm90_select_remote_channel(client, data, 1);
			if (val < 0)
				goto error;

			val = lm90_read16(client, LM90_REG_R_REMOTE_TEMPH,
					  LM90_REG_R_REMOTE_TEMPL);
			if (val < 0)
				goto error;
			data->temp11[REMOTE2_TEMP] = val;

			lm90_select_remote_channel(client, data, 0);

			val = lm90_read_reg(client, MAX6696_REG_R_STATUS2);
			if (val < 0)
				goto error;
			data->alarms |= val << 8;
		}

		/*
                 * Re-enable ALERT# output if it was originally enabled and
                 * relevant alarms are all clear
                 */
		if (!(data->config_orig & 0x80) &&
		    !(data->alarms & data->alert_alarms)) {
			val = lm90_read_reg(client, LM90_REG_R_CONFIG1);
			if (val < 0)
				goto error;

			if (val & 0x80) {
				dev_dbg(&client->dev, "Re-enabling ALERT#\n");
				i2c_smbus_write_byte_data(client,
							  LM90_REG_W_CONFIG1,
							  val & ~0x80);
			}
		}

		data->last_updated = jiffies;
		data->valid = true;
	}

error:
	mutex_unlock(&data->update_lock);

	if (val < 0)
		return ERR_PTR(val);

	return data;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
430
85.66%
8
53.33%
jean delvare
jean delvare
58
11.55%
4
26.67%
ben hutchings
ben hutchings
9
1.79%
1
6.67%
nate case
nate case
4
0.80%
1
6.67%
ingo molnar
ingo molnar
1
0.20%
1
6.67%
Total
502
100.00%
15
100.00%

/*
 * Conversions
 * For local temperatures and limits, critical limits and the hysteresis
 * value, the LM90 uses signed 8-bit values with LSB = 1 degree Celsius.
 * For remote temperatures and limits, it uses signed 11-bit values with
 * LSB = 0.125 degree Celsius, left-justified in 16-bit registers.  Some
 * Maxim chips use unsigned values.
 */



static inline int temp_from_s8(s8 val)
{
	return val * 1000;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
11
73.33%
1
33.33%
jean delvare
jean delvare
4
26.67%
2
66.67%
Total
15
100.00%
3
100.00%



static inline int temp_from_u8(u8 val)
{
	return val * 1000;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
10
66.67%
1
25.00%
jean delvare
jean delvare
3
20.00%
2
50.00%
nate case
nate case
2
13.33%
1
25.00%
Total
15
100.00%
4
100.00%



static inline int temp_from_s16(s16 val)
{
	return val / 32 * 125;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
12
70.59%
1
33.33%
jean delvare
jean delvare
5
29.41%
2
66.67%
Total
17
100.00%
3
100.00%



static inline int temp_from_u16(u16 val)
{
	return val / 32 * 125;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
17
100.00%
2
100.00%
Total
17
100.00%
2
100.00%



static s8 temp_to_s8(long val)
{
	if (val <= -128000)
		return -128;
	if (val >= 127000)
		return 127;
	if (val < 0)
		return (val - 500) / 1000;
	return (val + 500) / 1000;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
45
84.91%
2
50.00%
jean delvare
jean delvare
8
15.09%
2
50.00%
Total
53
100.00%
4
100.00%



static u8 temp_to_u8(long val)
{
	if (val <= 0)
		return 0;
	if (val >= 255000)
		return 255;
	return (val + 500) / 1000;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
33
91.67%
1
50.00%
jean delvare
jean delvare
3
8.33%
1
50.00%
Total
36
100.00%
2
100.00%



static s16 temp_to_s16(long val)
{
	if (val <= -128000)
		return 0x8000;
	if (val >= 127875)
		return 0x7FE0;
	if (val < 0)
		return (val - 62) / 125 * 32;
	return (val + 62) / 125 * 32;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
49
87.50%
1
50.00%
jean delvare
jean delvare
7
12.50%
1
50.00%
Total
56
100.00%
2
100.00%



static u8 hyst_to_reg(long val)
{
	if (val <= 0)
		return 0;
	if (val >= 30500)
		return 31;
	return (val + 500) / 1000;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
32
88.89%
1
50.00%
jean delvare
jean delvare
4
11.11%
1
50.00%
Total
36
100.00%
2
100.00%

/*
 * ADT7461 in compatibility mode is almost identical to LM90 except that
 * attempts to write values that are outside the range 0 < temp < 127 are
 * treated as the boundary value.
 *
 * ADT7461 in "extended mode" operation uses unsigned integers offset by
 * 64 (e.g., 0 -> -64 degC).  The range is restricted to -64..191 degC.
 */


static inline int temp_from_u8_adt7461(struct lm90_data *data, u8 val)
{
	if (data->flags & LM90_FLAG_ADT7461_EXT)
		return (val - 64) * 1000;
	return temp_from_s8(val);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
27
71.05%
1
50.00%
jean delvare
jean delvare
11
28.95%
1
50.00%
Total
38
100.00%
2
100.00%



static inline int temp_from_u16_adt7461(struct lm90_data *data, u16 val)
{
	if (data->flags & LM90_FLAG_ADT7461_EXT)
		return (val - 0x4000) / 64 * 250;
	return temp_from_s16(val);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
38
95.00%
1
50.00%
jean delvare
jean delvare
2
5.00%
1
50.00%
Total
40
100.00%
2
100.00%



static u8 temp_to_u8_adt7461(struct lm90_data *data, long val)
{
	if (data->flags & LM90_FLAG_ADT7461_EXT) {
		if (val <= -64000)
			return 0;
		if (val >= 191000)
			return 0xFF;
		return (val + 500 + 64000) / 1000;
	}
	if (val <= 0)
		return 0;
	if (val >= 127000)
		return 127;
	return (val + 500) / 1000;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
81
100.00%
2
100.00%
Total
81
100.00%
2
100.00%



static u16 temp_to_u16_adt7461(struct lm90_data *data, long val)
{
	if (data->flags & LM90_FLAG_ADT7461_EXT) {
		if (val <= -64000)
			return 0;
		if (val >= 191750)
			return 0xFFC0;
		return (val + 64000 + 125) / 250 * 64;
	}
	if (val <= 0)
		return 0;
	if (val >= 127750)
		return 0x7FC0;
	return (val + 125) / 250 * 64;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
85
100.00%
1
100.00%
Total
85
100.00%
1
100.00%

/*
 * Sysfs stuff
 */



static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
			  char *buf)
{
	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
	struct lm90_data *data = lm90_update_device(dev);
	int temp;

	if (IS_ERR(data))
		return PTR_ERR(data);

	if (data->kind == adt7461 || data->kind == tmp451)
		temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
	else if (data->kind == max6646)
		temp = temp_from_u8(data->temp8[attr->index]);
	else
		temp = temp_from_s8(data->temp8[attr->index]);

	/* +16 degrees offset for temp2 for the LM99 */
	if (data->kind == lm99 && attr->index == 3)
		temp += 16000;

	return sprintf(buf, "%d\n", temp);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
136
88.89%
3
50.00%
jean delvare
jean delvare
11
7.19%
2
33.33%
ni wade
ni wade
6
3.92%
1
16.67%
Total
153
100.00%
6
100.00%



static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
			 const char *buf, size_t count)
{
	static const u8 reg[TEMP8_REG_NUM] = {
		LM90_REG_W_LOCAL_LOW,
		LM90_REG_W_LOCAL_HIGH,
		LM90_REG_W_LOCAL_CRIT,
		LM90_REG_W_REMOTE_CRIT,
		MAX6659_REG_W_LOCAL_EMERG,
		MAX6659_REG_W_REMOTE_EMERG,
		LM90_REG_W_REMOTE_CRIT,
		MAX6659_REG_W_REMOTE_EMERG,
        };

	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
	struct lm90_data *data = dev_get_drvdata(dev);
	struct i2c_client *client = data->client;
	int nr = attr->index;
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err < 0)
		return err;

	/* +16 degrees offset for temp2 for the LM99 */
	if (data->kind == lm99 && attr->index == 3)
		val -= 16000;

	mutex_lock(&data->update_lock);
	if (data->kind == adt7461 || data->kind == tmp451)
		data->temp8[nr] = temp_to_u8_adt7461(data, val);
	else if (data->kind == max6646)
		data->temp8[nr] = temp_to_u8(val);
	else
		data->temp8[nr] = temp_to_s8(val);

	lm90_select_remote_channel(client, data, nr >= 6);
	i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
	lm90_select_remote_channel(client, data, 0);

	mutex_unlock(&data->update_lock);
	return count;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
205
82.00%
3
30.00%
jean delvare
jean delvare
37
14.80%
4
40.00%
ni wade
ni wade
7
2.80%
2
20.00%
frans meulenbroeks
frans meulenbroeks
1
0.40%
1
10.00%
Total
250
100.00%
10
100.00%



static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
			   char *buf)
{
	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
	struct lm90_data *data = lm90_update_device(dev);
	int temp;

	if (IS_ERR(data))
		return PTR_ERR(data);

	if (data->kind == adt7461 || data->kind == tmp451)
		temp = temp_from_u16_adt7461(data, data->temp11[attr->index]);
	else if (data->kind == max6646)
		temp = temp_from_u16(data->temp11[attr->index]);
	else
		temp = temp_from_s16(data->temp11[attr->index]);

	/* +16 degrees offset for temp2 for the LM99 */
	if (data->kind == lm99 &&  attr->index <= 2)
		temp += 16000;

	return sprintf(buf, "%d\n", temp);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
128
83.66%
2
40.00%
jean delvare
jean delvare
19
12.42%
2
40.00%
ni wade
ni wade
6
3.92%
1
20.00%
Total
153
100.00%
5
100.00%



static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
			  const char *buf, size_t count)
{
	struct {
		u8 high;
		u8 low;
		int channel;
	} reg[5] = {
		{ LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL, 0 },
		{ LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL, 0 },
		{ LM90_REG_W_REMOTE_OFFSH, LM90_REG_W_REMOTE_OFFSL, 0 },
		{ LM90_REG_W_REMOTE_LOWH, LM90_REG_W_REMOTE_LOWL, 1 },
		{ LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL, 1 }
	};

	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
	struct lm90_data *data = dev_get_drvdata(dev);
	struct i2c_client *client = data->client;
	int nr = attr->nr;
	int index = attr->index;
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err < 0)
		return err;

	/* +16 degrees offset for temp2 for the LM99 */
	if (data->kind == lm99 && index <= 2)
		val -= 16000;

	mutex_lock(&data->update_lock);
	if (data->kind == adt7461 || data->kind == tmp451)
		data->temp11[index] = temp_to_u16_adt7461(data, val);
	else if (data->kind == max6646)
		data->temp11[index] = temp_to_u8(val) << 8;
	else if (data->flags & LM90_HAVE_REM_LIMIT_EXT)
		data->temp11[index] = temp_to_s16(val);
	else
		data->temp11[index] = temp_to_s8(val) << 8;

	lm90_select_remote_channel(client, data, reg[nr].channel);
	i2c_smbus_write_byte_data(client, reg[nr].high,
				  data->temp11[index] >> 8);
	if (data->flags & LM90_HAVE_REM_LIMIT_EXT)
		i2c_smbus_write_byte_data(client, reg[nr].low,
					  data->temp11[index] & 0xff);
	lm90_select_remote_channel(client, data, 0);

	mutex_unlock(&data->update_lock);
	return count;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
314
89.97%
4
50.00%
jean delvare
jean delvare
28
8.02%
2
25.00%
ni wade
ni wade
6
1.72%
1
12.50%
frans meulenbroeks
frans meulenbroeks
1
0.29%
1
12.50%
Total
349
100.00%
8
100.00%



static ssize_t show_temphyst(struct device *dev,
			     struct device_attribute *devattr,
			     char *buf)
{
	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
	struct lm90_data *data = lm90_update_device(dev);
	int temp;

	if (IS_ERR(data))
		return PTR_ERR(data);

	if (data->kind == adt7461 || data->kind == tmp451)
		temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
	else if (data->kind == max6646)
		temp = temp_from_u8(data->temp8[attr->index]);
	else
		temp = temp_from_s8(data->temp8[attr->index]);

	/* +16 degrees offset for temp2 for the LM99 */
	if (data->kind == lm99 && attr->index == 3)
		temp += 16000;

	return sprintf(buf, "%d\n", temp - temp_from_s8(data->temp_hyst));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
148
92.50%
3
60.00%
jean delvare
jean delvare
6
3.75%
1
20.00%
ni wade
ni wade
6
3.75%
1
20.00%
Total
160
100.00%
5
100.00%



static ssize_t set_temphyst(struct device *dev, struct device_attribute *dummy,
			    const char *buf, size_t count)
{
	struct lm90_data *data = dev_get_drvdata(dev);
	struct i2c_client *client = data->client;
	long val;
	int err;
	int temp;

	err = kstrtol(buf, 10, &val);
	if (err < 0)
		return err;

	mutex_lock(&data->update_lock);
	if (data->kind == adt7461 || data->kind == tmp451)
		temp = temp_from_u8_adt7461(data, data->temp8[LOCAL_CRIT]);
	else if (data->kind == max6646)
		temp = temp_from_u8(data->temp8[LOCAL_CRIT]);
	else
		temp = temp_from_s8(data->temp8[LOCAL_CRIT]);

	data->temp_hyst = hyst_to_reg(temp - val);
	i2c_smbus_write_byte_data(client, LM90_REG_W_TCRIT_HYST,
				  data->temp_hyst);
	mutex_unlock(&data->update_lock);
	return count;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
166
94.32%
3
50.00%
ni wade
ni wade
9
5.11%
2
33.33%
frans meulenbroeks
frans meulenbroeks
1
0.57%
1
16.67%
Total
176
100.00%
6
100.00%



static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
			   char *buf)
{
	struct lm90_data *data = lm90_update_device(dev);

	if (IS_ERR(data))
		return PTR_ERR(data);

	return sprintf(buf, "%d\n", data->alarms);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
55
100.00%
3
100.00%
Total
55
100.00%
3
100.00%



static ssize_t show_alarm(struct device *dev, struct device_attribute
			  *devattr, char *buf)
{
	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
	struct lm90_data *data = lm90_update_device(dev);
	int bitnr = attr->index;

	if (IS_ERR(data))
		return PTR_ERR(data);

	return sprintf(buf, "%d\n", (data->alarms >> bitnr) & 1);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
78
100.00%
3
100.00%
Total
78
100.00%
3
100.00%



static ssize_t show_update_interval(struct device *dev,
				    struct device_attribute *attr, char *buf)
{
	struct lm90_data *data = dev_get_drvdata(dev);

	return sprintf(buf, "%u\n", data->update_interval);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
42
100.00%
1
100.00%
Total
42
100.00%
1
100.00%



static ssize_t set_update_interval(struct device *dev,
				   struct device_attribute *attr,
				   const char *buf, size_t count)
{
	struct lm90_data *data = dev_get_drvdata(dev);
	struct i2c_client *client = data->client;
	unsigned long val;
	int err;

	err = kstrtoul(buf, 10, &val);
	if (err)
		return err;

	mutex_lock(&data->update_lock);
	lm90_set_convrate(client, data, clamp_val(val, 0, 100000));
	mutex_unlock(&data->update_lock);

	return count;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
103
99.04%
4
80.00%
frans meulenbroeks
frans meulenbroeks
1
0.96%
1
20.00%
Total
104
100.00%
5
100.00%

static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp11, NULL,
	0, LOCAL_TEMP);
static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp11, NULL,
	0, REMOTE_TEMP);
static SENSOR_DEVICE_ATTR(temp1_min, S_IWUSR | S_IRUGO, show_temp8,
	set_temp8, LOCAL_LOW);
static SENSOR_DEVICE_ATTR_2(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
	set_temp11, 0, REMOTE_LOW);
static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_temp8,
	set_temp8, LOCAL_HIGH);
static SENSOR_DEVICE_ATTR_2(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
	set_temp11, 1, REMOTE_HIGH);
static SENSOR_DEVICE_ATTR(temp1_crit, S_IWUSR | S_IRUGO, show_temp8,
	set_temp8, LOCAL_CRIT);
static SENSOR_DEVICE_ATTR(temp2_crit, S_IWUSR | S_IRUGO, show_temp8,
	set_temp8, REMOTE_CRIT);
static SENSOR_DEVICE_ATTR(temp1_crit_hyst, S_IWUSR | S_IRUGO, show_temphyst,
	set_temphyst, LOCAL_CRIT);
static SENSOR_DEVICE_ATTR(temp2_crit_hyst, S_IRUGO, show_temphyst, NULL,
	REMOTE_CRIT);
static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,
	set_temp11, 2, REMOTE_OFFSET);

/* Individual alarm files */
static SENSOR_DEVICE_ATTR(temp1_crit_alarm, S_IRUGO, show_alarm, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1);
static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2);
static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3);
static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4);
static SENSOR_DEVICE_ATTR(temp1_min_alarm, S_IRUGO, show_alarm, NULL, 5);
static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6);
/* Raw alarm file for compatibility */
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);

static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
		   set_update_interval);


static struct attribute *lm90_attributes[] = {
	&sensor_dev_attr_temp1_input.dev_attr.attr,
	&sensor_dev_attr_temp2_input.dev_attr.attr,
	&sensor_dev_attr_temp1_min.dev_attr.attr,
	&sensor_dev_attr_temp2_min.dev_attr.attr,
	&sensor_dev_attr_temp1_max.dev_attr.attr,
	&sensor_dev_attr_temp2_max.dev_attr.attr,
	&sensor_dev_attr_temp1_crit.dev_attr.attr,
	&sensor_dev_attr_temp2_crit.dev_attr.attr,
	&sensor_dev_attr_temp1_crit_hyst.dev_attr.attr,
	&sensor_dev_attr_temp2_crit_hyst.dev_attr.attr,

	&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_fault.dev_attr.attr,
	&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
	&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
	&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
	&dev_attr_alarms.attr,
	&dev_attr_update_interval.attr,
	NULL
};


static const struct attribute_group lm90_group = {
	.attrs = lm90_attributes,
};


static struct attribute *lm90_temp2_offset_attributes[] = {
	&sensor_dev_attr_temp2_offset.dev_attr.attr,
	NULL
};


static const struct attribute_group lm90_temp2_offset_group = {
	.attrs = lm90_temp2_offset_attributes,
};

/*
 * Additional attributes for devices with emergency sensors
 */
static SENSOR_DEVICE_ATTR(temp1_emergency, S_IWUSR | S_IRUGO, show_temp8,
	set_temp8, LOCAL_EMERG);
static SENSOR_DEVICE_ATTR(temp2_emergency, S_IWUSR | S_IRUGO, show_temp8,
	set_temp8, REMOTE_EMERG);
static SENSOR_DEVICE_ATTR(temp1_emergency_hyst, S_IRUGO, show_temphyst,
			  NULL, LOCAL_EMERG);
static SENSOR_DEVICE_ATTR(temp2_emergency_hyst, S_IRUGO, show_temphyst,
			  NULL, REMOTE_EMERG);


static struct attribute *lm90_emergency_attributes[] = {
	&sensor_dev_attr_temp1_emergency.dev_attr.attr,
	&sensor_dev_attr_temp2_emergency.dev_attr.attr,
	&sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr,
	&sensor_dev_attr_temp2_emergency_hyst.dev_attr.attr,
	NULL
};


static const struct attribute_group lm90_emergency_group = {
	.attrs = lm90_emergency_attributes,
};

static SENSOR_DEVICE_ATTR(temp1_emergency_alarm, S_IRUGO, show_alarm, NULL, 15);
static SENSOR_DEVICE_ATTR(temp2_emergency_alarm, S_IRUGO, show_alarm, NULL, 13);


static struct attribute *lm90_emergency_alarm_attributes[] = {
	&sensor_dev_attr_temp1_emergency_alarm.dev_attr.attr,
	&sensor_dev_attr_temp2_emergency_alarm.dev_attr.attr,
	NULL
};


static const struct attribute_group lm90_emergency_alarm_group = {
	.attrs = lm90_emergency_alarm_attributes,
};

/*
 * Additional attributes for devices with 3 temperature sensors
 */
static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp11, NULL,
	0, REMOTE2_TEMP);
static SENSOR_DEVICE_ATTR_2(temp3_min, S_IWUSR | S_IRUGO, show_temp11,
	set_temp11, 3, REMOTE2_LOW);
static SENSOR_DEVICE_ATTR_2(temp3_max, S_IWUSR | S_IRUGO, show_temp11,
	set_temp11, 4, REMOTE2_HIGH);
static SENSOR_DEVICE_ATTR(temp3_crit, S_IWUSR | S_IRUGO, show_temp8,
	set_temp8, REMOTE2_CRIT);
static SENSOR_DEVICE_ATTR(temp3_crit_hyst, S_IRUGO, show_temphyst, NULL,
	REMOTE2_CRIT);
static SENSOR_DEVICE_ATTR(temp3_emergency, S_IWUSR | S_IRUGO, show_temp8,
	set_temp8, REMOTE2_EMERG);
static SENSOR_DEVICE_ATTR(temp3_emergency_hyst, S_IRUGO, show_temphyst,
			  NULL, REMOTE2_EMERG);

static SENSOR_DEVICE_ATTR(temp3_crit_alarm, S_IRUGO, show_alarm, NULL, 9);
static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 10);
static SENSOR_DEVICE_ATTR(temp3_min_alarm, S_IRUGO, show_alarm, NULL, 11);
static SENSOR_DEVICE_ATTR(temp3_max_alarm, S_IRUGO, show_alarm, NULL, 12);
static SENSOR_DEVICE_ATTR(temp3_emergency_alarm, S_IRUGO, show_alarm, NULL, 14);


static struct attribute *lm90_temp3_attributes[] = {
	&sensor_dev_attr_temp3_input.dev_attr.attr,
	&sensor_dev_attr_temp3_min.dev_attr.attr,
	&sensor_dev_attr_temp3_max.dev_attr.attr,
	&sensor_dev_attr_temp3_crit.dev_attr.attr,
	&sensor_dev_attr_temp3_crit_hyst.dev_attr.attr,
	&sensor_dev_attr_temp3_emergency.dev_attr.attr,
	&sensor_dev_attr_temp3_emergency_hyst.dev_attr.attr,

	&sensor_dev_attr_temp3_fault.dev_attr.attr,
	&sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
	&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
	&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
	&sensor_dev_attr_temp3_emergency_alarm.dev_attr.attr,
	NULL
};


static const struct attribute_group lm90_temp3_group = {
	.attrs = lm90_temp3_attributes,
};

/* pec used for ADM1032 only */


static ssize_t show_pec(struct device *dev, struct device_attribute *dummy,
			char *buf)
{
	struct i2c_client *client = to_i2c_client(dev);
	return sprintf(buf, "%d\n", !!(client->flags & I2C_CLIENT_PEC));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
48
100.00%
4
100.00%
Total
48
100.00%
4
100.00%



static ssize_t set_pec(struct device *dev, struct device_attribute *dummy,
		       const char *buf, size_t count)
{
	struct i2c_client *client = to_i2c_client(dev);
	long val;
	int err;

	err = kstrtol(buf, 10, &val);
	if (err < 0)
		return err;

	switch (val) {
	case 0:
		client->flags &= ~I2C_CLIENT_PEC;
		break;
	case 1:
		client->flags |= I2C_CLIENT_PEC;
		break;
	default:
		return -EINVAL;
	}

	return count;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
55
57.29%
2
28.57%
jean delvare
jean delvare
39
40.62%
3
42.86%
frans meulenbroeks
frans meulenbroeks
1
1.04%
1
14.29%
james chapman
james chapman
1
1.04%
1
14.29%
Total
96
100.00%
7
100.00%

static DEVICE_ATTR(pec, S_IWUSR | S_IRUGO, show_pec, set_pec);

/*
 * Real code
 */

/* Return 0 if detection is successful, -ENODEV otherwise */


static int lm90_detect(struct i2c_client *client,
		       struct i2c_board_info *info)
{
	struct i2c_adapter *adapter = client->adapter;
	int address = client->addr;
	const char *name = NULL;
	int man_id, chip_id, config1, config2, convrate;

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
		return -ENODEV;

	/* detection and identification */
	man_id = i2c_smbus_read_byte_data(client, LM90_REG_R_MAN_ID);
	chip_id = i2c_smbus_read_byte_data(client, LM90_REG_R_CHIP_ID);
	config1 = i2c_smbus_read_byte_data(client, LM90_REG_R_CONFIG1);
	convrate = i2c_smbus_read_byte_data(client, LM90_REG_R_CONVRATE);
	if (man_id < 0 || chip_id < 0 || config1 < 0 || convrate < 0)
		return -ENODEV;

	if (man_id == 0x01 || man_id == 0x5C || man_id == 0x41) {
		config2 = i2c_smbus_read_byte_data(client, LM90_REG_R_CONFIG2);
		if (config2 < 0)
			return -ENODEV;
	} else
		config2 = 0;		/* Make compiler happy */

	if ((address == 0x4C || address == 0x4D)
	 && man_id == 0x01) { /* National Semiconductor */
		if ((config1 & 0x2A) == 0x00
		 && (config2 & 0xF8) == 0x00
		 && convrate <= 0x09) {
			if (address == 0x4C
			 && (chip_id & 0xF0) == 0x20) { /* LM90 */
				name = "lm90";
			} else
			if ((chip_id & 0xF0) == 0x30) { /* LM89/LM99 */
				name = "lm99";
				dev_info(&adapter->dev,
					 "Assuming LM99 chip at 0x%02x\n",
					 address);
				dev_info(&adapter->dev,
					 "If it is an LM89, instantiate it "
					 "with the new_device sysfs "
					 "interface\n");
			} else
			if (address == 0x4C
			 && (chip_id & 0xF0) == 0x10) { /* LM86 */
				name = "lm86";
			}
		}
	} else
	if ((address == 0x4C || address == 0x4D)
	 && man_id == 0x41) { /* Analog Devices */
		if ((chip_id & 0xF0) == 0x40 /* ADM1032 */
		 && (config1 & 0x3F) == 0x00
		 && convrate <= 0x0A) {
			name = "adm1032";
			/*
                         * The ADM1032 supports PEC, but only if combined
                         * transactions are not used.
                         */
			if (i2c_check_functionality(adapter,
						    I2C_FUNC_SMBUS_BYTE))
				info->flags |= I2C_CLIENT_PEC;
		} else
		if (chip_id == 0x51 /* ADT7461 */
		 && (config1 & 0x1B) == 0x00
		 && convrate <= 0x0A) {
			name = "adt7461";
		} else
		if (chip_id == 0x57 /* ADT7461A, NCT1008 */
		 && (config1 & 0x1B) == 0x00
		 && convrate <= 0x0A) {
			name = "adt7461a";
		}
	} else
	if (man_id == 0x4D) { /* Maxim */
		int emerg, emerg2, status2;

		/*
                 * We read MAX6659_REG_R_REMOTE_EMERG twice, and re-read
                 * LM90_REG_R_MAN_ID in between. If MAX6659_REG_R_REMOTE_EMERG
                 * exists, both readings will reflect the same value. Otherwise,
                 * the readings will be different.
                 */
		emerg = i2c_smbus_read_byte_data(client,
						 MAX6659_REG_R_REMOTE_EMERG);
		man_id = i2c_smbus_read_byte_data(client,
						  LM90_REG_R_MAN_ID);
		emerg2 = i2c_smbus_read_byte_data(client,
						  MAX6659_REG_R_REMOTE_EMERG);
		status2 = i2c_smbus_read_byte_data(client,
						   MAX6696_REG_R_STATUS2);
		if (emerg < 0 || man_id < 0 || emerg2 < 0 || status2 < 0)
			return -ENODEV;

		/*
                 * The MAX6657, MAX6658 and MAX6659 do NOT have a chip_id
                 * register. Reading from that address will return the last
                 * read value, which in our case is those of the man_id
                 * register. Likewise, the config1 register seems to lack a
                 * low nibble, so the value will be those of the previous
                 * read, so in our case those of the man_id register.
                 * MAX6659 has a third set of upper temperature limit registers.
                 * Those registers also return values on MAX6657 and MAX6658,
                 * thus the only way to detect MAX6659 is by its address.
                 * For this reason it will be mis-detected as MAX6657 if its
                 * address is 0x4C.
                 */
		if (chip_id == man_id
		 && (address == 0x4C || address == 0x4D || address == 0x4E)
		 && (config1 & 0x1F) == (man_id & 0x0F)
		 && convrate <= 0x09) {
			if (address == 0x4C)
				name = "max6657";
			else
				name = "max6659";
		} else
		/*
                 * Even though MAX6695 and MAX6696 do not have a chip ID
                 * register, reading it returns 0x01. Bit 4 of the config1
                 * register is unused and should return zero when read. Bit 0 of
                 * the status2 register is unused and should return zero when
                 * read.
                 *
                 * MAX6695 and MAX6696 have an additional set of temperature
                 * limit registers. We can detect those chips by checking if
                 * one of those registers exists.
                 */
		if (chip_id == 0x01
		 && (config1 & 0x10) == 0x00
		 && (status2 & 0x01) == 0x00
		 && emerg == emerg2
		 && convrate <= 0x07) {
			name = "max6696";
		} else
		/*
                 * The chip_id register of the MAX6680 and MAX6681 holds the
                 * revision of the chip. The lowest bit of the config1 register
                 * is unused and should return zero when read, so should the
                 * second to last bit of config1 (software reset).
                 */
		if (chip_id == 0x01
		 && (config1 & 0x03) == 0x00
		 && convrate <= 0x07) {
			name = "max6680";
		} else
		/*
                 * The chip_id register of the MAX6646/6647/6649 holds the
                 * revision of the chip. The lowest 6 bits of the config1
                 * register are unused and should return zero when read.
                 */
		if (chip_id == 0x59
		 && (config1 & 0x3f) == 0x00
		 && convrate <= 0x07) {
			name = "max6646";
		}
	} else
	if (address == 0x4C
	 && man_id == 0x5C) { /* Winbond/Nuvoton */
		if ((config1 & 0x2A) == 0x00
		 && (config2 & 0xF8) == 0x00) {
			if (chip_id == 0x01 /* W83L771W/G */
			 && convrate <= 0x09) {
				name = "w83l771";
			} else
			if ((chip_id & 0xFE) == 0x10 /* W83L771AWG/ASG */
			 && convrate <= 0x08) {
				name = "w83l771";
			}
		}
	} else
	if (address >= 0x48 && address <= 0x4F
	 && man_id == 0xA1) { /*  NXP Semiconductor/Philips */
		if (chip_id == 0x00
		 && (config1 & 0x2A) == 0x00
		 && (config2 & 0xFE) == 0x00
		 && convrate <= 0x09) {
			name = "sa56004";
		}
	} else
	if ((address == 0x4C || address == 0x4D)
	 && man_id == 0x47) { /* GMT */
		if (chip_id == 0x01 /* G781 */
		 && (config1 & 0x3F) == 0x00
		 && convrate <= 0x08)
			name = "g781";
	} else
	if (address == 0x4C
	 && man_id == 0x55) { /* Texas Instruments */
		int local_ext;

		local_ext = i2c_smbus_read_byte_data(client,
						     TMP451_REG_R_LOCAL_TEMPL);

		if (chip_id == 0x00 /* TMP451 */
		 && (config1 & 0x1B) == 0x00
		 && convrate <= 0x09
		 && (local_ext & 0x0F) == 0x00)
			name = "tmp451";
	}

	if (!name) { /* identification failed */
		dev_dbg(&adapter->dev,
			"Unsupported chip at 0x%02x (man_id=0x%02X, "
			"chip_id=0x%02X)\n", address, man_id, chip_id);
		return -ENODEV;
	}

	strlcpy(info->type, name, I2C_NAME_SIZE);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
540
60.34%
8
30.77%
jean delvare
jean delvare
255
28.49%
13
50.00%
ni wade
ni wade
57
6.37%
1
3.85%
stijn devriendt
stijn devriendt
25
2.79%
1
3.85%
nate case
nate case
13
1.45%
1
3.85%
rainer birkenmaier
rainer birkenmaier
3
0.34%
1
3.85%
mark m. hoffman
mark m. hoffman
2
0.22%
1
3.85%
Total
895
100.00%
26
100.00%



static void lm90_restore_conf(void *_data)
{
	struct lm90_data *data = _data;
	struct i2c_client *client = data->client;

	/* Restore initial configuration */
	i2c_smbus_write_byte_data(client, LM90_REG_W_CONVRATE,
				  data->convrate_orig);
	i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
				  data->config_orig);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
49
100.00%
2
100.00%
Total
49
100.00%
2
100.00%



static int lm90_init_client(struct i2c_client *client, struct lm90_data *data)
{
	int config, convrate;

	convrate = lm90_read_reg(client, LM90_REG_R_CONVRATE);
	if (convrate < 0)
		return convrate;
	data->convrate_orig = convrate;

	/*
         * Start the conversions.
         */
	lm90_set_convrate(client, data, 500);	/* 500ms; 2Hz conversion rate */
	config = lm90_read_reg(client, LM90_REG_R_CONFIG1);
	if (config < 0)
		return config;
	data->config_orig = config;

	/* Check Temperature Range Select */
	if (data->kind == adt7461 || data->kind == tmp451) {
		if (config & 0x04)
			data->flags |= LM90_FLAG_ADT7461_EXT;
	}

	/*
         * Put MAX6680/MAX8881 into extended resolution (bit 0x10,
         * 0.125 degree resolution) and range (0x08, extend range
         * to -64 degree) mode for the remote temperature sensor.
         */
	if (data->kind == max6680)
		config |= 0x18;

	/*
         * Select external channel 0 for max6695/96
         */
	if (data->kind == max6696)
		config &= ~0x08;

	config &= 0xBF;	/* run */
	if (config != data->config_orig) /* Only write if changed */
		i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1, config);

	return devm_add_action_or_reset(&client->dev, lm90_restore_conf, data);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
140
81.40%
6
75.00%
jean delvare
jean delvare
26
15.12%
1
12.50%
ni wade
ni wade
6
3.49%
1
12.50%
Total
172
100.00%
8
100.00%



static bool lm90_is_tripped(struct i2c_client *client, u16 *status)
{
	struct lm90_data *data = i2c_get_clientdata(client);
	int st, st2 = 0;

	st = lm90_read_reg(client, LM90_REG_R_STATUS);
	if (st < 0)
		return false;

	if (data->kind == max6696) {
		st2 = lm90_read_reg(client, MAX6696_REG_R_STATUS2);
		if (st2 < 0)
			return false;
	}

	*status = st | (st2 << 8);

	if ((st & 0x7f) == 0 && (st2 & 0xfe) == 0)
		return false;

	if ((st & (LM90_STATUS_LLOW | LM90_STATUS_LHIGH | LM90_STATUS_LTHRM)) ||
	    (st2 & MAX6696_STATUS2_LOT2))
		dev_warn(&client->dev,
			 "temp%d out of range, please check!\n", 1);
	if ((st & (LM90_STATUS_RLOW | LM90_STATUS_RHIGH | LM90_STATUS_RTHRM)) ||
	    (st2 & MAX6696_STATUS2_ROT2))
		dev_warn(&client->dev,
			 "temp%d out of range, please check!\n", 2);
	if (st & LM90_STATUS_ROPEN)
		dev_warn(&client->dev,
			 "temp%d diode open, please check!\n", 2);
	if (st2 & (MAX6696_STATUS2_R2LOW | MAX6696_STATUS2_R2HIGH |
		   MAX6696_STATUS2_R2THRM | MAX6696_STATUS2_R2OT2))
		dev_warn(&client->dev,
			 "temp%d out of range, please check!\n", 3);
	if (st2 & MAX6696_STATUS2_R2OPEN)
		dev_warn(&client->dev,
			 "temp%d diode open, please check!\n", 3);

	return true;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
ni wade
ni wade
214
89.54%
1
50.00%
guenter roeck
guenter roeck
25
10.46%
1
50.00%
Total
239
100.00%
2
100.00%



static irqreturn_t lm90_irq_thread(int irq, void *dev_id)
{
	struct i2c_client *client = dev_id;
	u16 status;

	if (lm90_is_tripped(client, &status))
		return IRQ_HANDLED;
	else
		return IRQ_NONE;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
ni wade
ni wade
40
100.00%
1
100.00%
Total
40
100.00%
1
100.00%



static void lm90_remove_pec(void *dev)
{
	device_remove_file(dev, &dev_attr_pec);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
18
100.00%
1
100.00%
Total
18
100.00%
1
100.00%



static void lm90_regulator_disable(void *regulator)
{
	regulator_disable(regulator);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
15
100.00%
1
100.00%
Total
15
100.00%
1
100.00%



static int lm90_probe(struct i2c_client *client,
		      const struct i2c_device_id *id)
{
	struct device *dev = &client->dev;
	struct i2c_adapter *adapter = to_i2c_adapter(dev->parent);
	struct lm90_data *data;
	struct regulator *regulator;
	struct device *hwmon_dev;
	int groups = 0;
	int err;

	regulator = devm_regulator_get(dev, "vcc");
	if (IS_ERR(regulator))
		return PTR_ERR(regulator);

	err = regulator_enable(regulator);
	if (err < 0) {
		dev_err(dev, "Failed to enable regulator: %d\n", err);
		return err;
	}

	err = devm_add_action_or_reset(dev, lm90_regulator_disable, regulator);
	if (err)
		return err;

	data = devm_kzalloc(dev, sizeof(struct lm90_data), GFP_KERNEL);
	if (!data)
		return -ENOMEM;

	data->client = client;
	i2c_set_clientdata(client, data);
	mutex_init(&data->update_lock);

	/* Set the device type */
	data->kind = id->driver_data;
	if (data->kind == adm1032) {
		if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
			client->flags &= ~I2C_CLIENT_PEC;
	}

	/*
         * Different devices have different alarm bits triggering the
         * ALERT# output
         */
	data->alert_alarms = lm90_params[data->kind].alert_alarms;

	/* Set chip capabilities */
	data->flags = lm90_params[data->kind].flags;
	data->reg_local_ext = lm90_params[data->kind].reg_local_ext;

	/* Set maximum conversion rate */
	data->max_convrate = lm90_params[data->kind].max_convrate;

	/* Initialize the LM90 chip */
	err = lm90_init_client(client, data);
	if (err < 0) {
		dev_err(dev, "Failed to initialize device\n");
		return err;
	}

	/* Register sysfs hooks */
	data->groups[groups++] = &lm90_group;

	if (data->flags & LM90_HAVE_OFFSET)
		data->groups[groups++] = &lm90_temp2_offset_group;

	if (data->flags & LM90_HAVE_EMERGENCY)
		data->groups[groups++] = &lm90_emergency_group;

	if (data->flags & LM90_HAVE_EMERGENCY_ALARM)
		data->groups[groups++] = &lm90_emergency_alarm_group;

	if (data->flags & LM90_HAVE_TEMP3)
		data->groups[groups++] = &lm90_temp3_group;

	if (client->flags & I2C_CLIENT_PEC) {
		err = device_create_file(dev, &dev_attr_pec);
		if (err)
			return err;
		err = devm_add_action_or_reset(dev, lm90_remove_pec, dev);
		if (err)
			return err;
	}

	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
							   data, data->groups);
	if (IS_ERR(hwmon_dev))
		return PTR_ERR(hwmon_dev);

	if (client->irq) {
		dev_dbg(dev, "IRQ: %d\n", client->irq);
		err = devm_request_threaded_irq(dev, client->irq,
						NULL, lm90_irq_thread,
						IRQF_TRIGGER_LOW | IRQF_ONESHOT,
						"lm90", client);
		if (err < 0) {
			dev_err(dev, "cannot request IRQ %d\n", client->irq);
			return err;
		}
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
310
59.27%
14
53.85%
ni wade
ni wade
113
21.61%
2
7.69%
jean delvare
jean delvare
78
14.91%
7
26.92%
stijn devriendt
stijn devriendt
11
2.10%
1
3.85%
mark m. hoffman
mark m. hoffman
9
1.72%
1
3.85%
alexey dobriyan
alexey dobriyan
2
0.38%
1
3.85%
Total
523
100.00%
26
100.00%



static void lm90_alert(struct i2c_client *client, enum i2c_alert_protocol type,
		       unsigned int flag)
{
	u16 alarms;

	if (type != I2C_PROTOCOL_SMBUS_ALERT)
		return;

	if (lm90_is_tripped(client, &alarms)) {
		/*
                 * Disable ALERT# output, because these chips don't implement
                 * SMBus alert correctly; they should only hold the alert line
                 * low briefly.
                 */
		struct lm90_data *data = i2c_get_clientdata(client);

		if ((data->flags & LM90_HAVE_BROKEN_ALERT) &&
		    (alarms & data->alert_alarms)) {
			int config;

			dev_dbg(&client->dev, "Disabling ALERT#\n");
			config = lm90_read_reg(client, LM90_REG_R_CONFIG1);
			if (config >= 0)
				i2c_smbus_write_byte_data(client,
							  LM90_REG_W_CONFIG1,
							  config | 0x80);
		}
	} else {
		dev_info(&client->dev, "Everything OK\n");
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
51
41.13%
5
55.56%
jean delvare
jean delvare
36
29.03%
2
22.22%
ni wade
ni wade
26
20.97%
1
11.11%
benjamin tissoires
benjamin tissoires
11
8.87%
1
11.11%
Total
124
100.00%
9
100.00%


static struct i2c_driver lm90_driver = {
	.class		= I2C_CLASS_HWMON,
	.driver = {
		.name	= "lm90",
        },
	.probe		= lm90_probe,
	.alert		= lm90_alert,
	.id_table	= lm90_id,
	.detect		= lm90_detect,
	.address_list	= normal_i2c,
};


module_i2c_driver(lm90_driver);

MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
MODULE_DESCRIPTION("LM90/ADM1032 driver");
MODULE_LICENSE("GPL");
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
guenter roeck
guenter roeck
5588
72.30%
29
35.37%
jean delvare
jean delvare
1110
14.36%
32
39.02%
ni wade
ni wade
699
9.04%
5
6.10%
stijn devriendt
stijn devriendt
115
1.49%
1
1.22%
nate case
nate case
80
1.04%
2
2.44%
ben hutchings
ben hutchings
65
0.84%
1
1.22%
rainer birkenmaier
rainer birkenmaier
19
0.25%
1
1.22%
mark m. hoffman
mark m. hoffman
18
0.23%
3
3.66%
benjamin tissoires
benjamin tissoires
11
0.14%
1
1.22%
james chapman
james chapman
6
0.08%
1
1.22%
alexey dobriyan
alexey dobriyan
5
0.06%
1
1.22%
ingo molnar
ingo molnar
5
0.06%
1
1.22%
frans meulenbroeks
frans meulenbroeks
5
0.06%
1
1.22%
wolfram sang
wolfram sang
1
0.01%
1
1.22%
axel lin
axel lin
1
0.01%
1
1.22%
lucas de marchi
lucas de marchi
1
0.01%
1
1.22%
Total
7729
100.00%
82
100.00%
  
Directory: drivers/hwmon

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.