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linux/drivers/hwmon/dme1737.c
Axel Lin d58e47d787 hwmon: (dme1737) Prevent overflow problem when writing large limits 
On platforms with sizeof(int) < sizeof(long), writing a temperature
limit larger than MAXINT will result in unpredictable limit values
written to the chip. Avoid auto-conversion from long to int to fix
the problem.

Voltage limits, fan minimum speed, pwm frequency, pwm ramp rate, and
other attributes have the same problem, fix them as well.

Zone temperature limits are signed, but were cached as u8, causing
unepected values to be reported for negative temperatures. Cache as
s8 to fix the problem.

vrm is an u8, so the written value needs to be limited to [0, 255].

Signed-off-by: Axel Lin <axel.lin@ingics.com>
[Guenter Roeck: Fix zone temperature cache]
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2014-08-05 19:40:15 -07:00

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/*
* dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027,
* and SCH5127 Super-I/O chips integrated hardware monitoring
* features.
* Copyright (c) 2007, 2008, 2009, 2010 Juerg Haefliger <juergh@gmail.com>
*
* This driver is an I2C/ISA hybrid, meaning that it uses the I2C bus to access
* the chip registers if a DME1737, A8000, or SCH5027 is found and the ISA bus
* if a SCH311x or SCH5127 chip is found. Both types of chips have very
* similar hardware monitoring capabilities but differ in the way they can be
* accessed.
*
* 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <linux/i2c.h>
#include <linux/platform_device.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
#include <linux/acpi.h>
#include <linux/io.h>
/* ISA device, if found */
static struct platform_device *pdev;
/* Module load parameters */
static bool force_start;
module_param(force_start, bool, 0);
MODULE_PARM_DESC(force_start, "Force the chip to start monitoring inputs");
static unsigned short force_id;
module_param(force_id, ushort, 0);
MODULE_PARM_DESC(force_id, "Override the detected device ID");
static bool probe_all_addr;
module_param(probe_all_addr, bool, 0);
MODULE_PARM_DESC(probe_all_addr,
"Include probing of non-standard LPC addresses");
/* Addresses to scan */
static const unsigned short normal_i2c[] = {0x2c, 0x2d, 0x2e, I2C_CLIENT_END};
enum chips { dme1737, sch5027, sch311x, sch5127 };
#define DO_REPORT "Please report to the driver maintainer."
/* ---------------------------------------------------------------------
* Registers
*
* The sensors are defined as follows:
*
* Voltages Temperatures
* -------- ------------
* in0 +5VTR (+5V stdby) temp1 Remote diode 1
* in1 Vccp (proc core) temp2 Internal temp
* in2 VCC (internal +3.3V) temp3 Remote diode 2
* in3 +5V
* in4 +12V
* in5 VTR (+3.3V stby)
* in6 Vbat
* in7 Vtrip (sch5127 only)
*
* --------------------------------------------------------------------- */
/* Voltages (in) numbered 0-7 (ix) */
#define DME1737_REG_IN(ix) ((ix) < 5 ? 0x20 + (ix) : \
(ix) < 7 ? 0x94 + (ix) : \
0x1f)
#define DME1737_REG_IN_MIN(ix) ((ix) < 5 ? 0x44 + (ix) * 2 \
: 0x91 + (ix) * 2)
#define DME1737_REG_IN_MAX(ix) ((ix) < 5 ? 0x45 + (ix) * 2 \
: 0x92 + (ix) * 2)
/* Temperatures (temp) numbered 0-2 (ix) */
#define DME1737_REG_TEMP(ix) (0x25 + (ix))
#define DME1737_REG_TEMP_MIN(ix) (0x4e + (ix) * 2)
#define DME1737_REG_TEMP_MAX(ix) (0x4f + (ix) * 2)
#define DME1737_REG_TEMP_OFFSET(ix) ((ix) == 0 ? 0x1f \
: 0x1c + (ix))
/*
* Voltage and temperature LSBs
* The LSBs (4 bits each) are stored in 5 registers with the following layouts:
* IN_TEMP_LSB(0) = [in5, in6]
* IN_TEMP_LSB(1) = [temp3, temp1]
* IN_TEMP_LSB(2) = [in4, temp2]
* IN_TEMP_LSB(3) = [in3, in0]
* IN_TEMP_LSB(4) = [in2, in1]
* IN_TEMP_LSB(5) = [res, in7]
*/
#define DME1737_REG_IN_TEMP_LSB(ix) (0x84 + (ix))
static const u8 DME1737_REG_IN_LSB[] = {3, 4, 4, 3, 2, 0, 0, 5};
static const u8 DME1737_REG_IN_LSB_SHL[] = {4, 4, 0, 0, 0, 0, 4, 4};
static const u8 DME1737_REG_TEMP_LSB[] = {1, 2, 1};
static const u8 DME1737_REG_TEMP_LSB_SHL[] = {4, 4, 0};
/* Fans numbered 0-5 (ix) */
#define DME1737_REG_FAN(ix) ((ix) < 4 ? 0x28 + (ix) * 2 \
: 0xa1 + (ix) * 2)
#define DME1737_REG_FAN_MIN(ix) ((ix) < 4 ? 0x54 + (ix) * 2 \
: 0xa5 + (ix) * 2)
#define DME1737_REG_FAN_OPT(ix) ((ix) < 4 ? 0x90 + (ix) \
: 0xb2 + (ix))
#define DME1737_REG_FAN_MAX(ix) (0xb4 + (ix)) /* only for fan[4-5] */
/* PWMs numbered 0-2, 4-5 (ix) */
#define DME1737_REG_PWM(ix) ((ix) < 3 ? 0x30 + (ix) \
: 0xa1 + (ix))
#define DME1737_REG_PWM_CONFIG(ix) (0x5c + (ix)) /* only for pwm[0-2] */
#define DME1737_REG_PWM_MIN(ix) (0x64 + (ix)) /* only for pwm[0-2] */
#define DME1737_REG_PWM_FREQ(ix) ((ix) < 3 ? 0x5f + (ix) \
: 0xa3 + (ix))
/*
* The layout of the ramp rate registers is different from the other pwm
* registers. The bits for the 3 PWMs are stored in 2 registers:
* PWM_RR(0) = [OFF3, OFF2, OFF1, RES, RR1E, RR1-2, RR1-1, RR1-0]
* PWM_RR(1) = [RR2E, RR2-2, RR2-1, RR2-0, RR3E, RR3-2, RR3-1, RR3-0]
*/
#define DME1737_REG_PWM_RR(ix) (0x62 + (ix)) /* only for pwm[0-2] */
/* Thermal zones 0-2 */
#define DME1737_REG_ZONE_LOW(ix) (0x67 + (ix))
#define DME1737_REG_ZONE_ABS(ix) (0x6a + (ix))
/*
* The layout of the hysteresis registers is different from the other zone
* registers. The bits for the 3 zones are stored in 2 registers:
* ZONE_HYST(0) = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
* ZONE_HYST(1) = [H3-3, H3-2, H3-1, H3-0, RES, RES, RES, RES]
*/
#define DME1737_REG_ZONE_HYST(ix) (0x6d + (ix))
/*
* Alarm registers and bit mapping
* The 3 8-bit alarm registers will be concatenated to a single 32-bit
* alarm value [0, ALARM3, ALARM2, ALARM1].
*/
#define DME1737_REG_ALARM1 0x41
#define DME1737_REG_ALARM2 0x42
#define DME1737_REG_ALARM3 0x83
static const u8 DME1737_BIT_ALARM_IN[] = {0, 1, 2, 3, 8, 16, 17, 18};
static const u8 DME1737_BIT_ALARM_TEMP[] = {4, 5, 6};
static const u8 DME1737_BIT_ALARM_FAN[] = {10, 11, 12, 13, 22, 23};
/* Miscellaneous registers */
#define DME1737_REG_DEVICE 0x3d
#define DME1737_REG_COMPANY 0x3e
#define DME1737_REG_VERSTEP 0x3f
#define DME1737_REG_CONFIG 0x40
#define DME1737_REG_CONFIG2 0x7f
#define DME1737_REG_VID 0x43
#define DME1737_REG_TACH_PWM 0x81
/* ---------------------------------------------------------------------
* Misc defines
* --------------------------------------------------------------------- */
/* Chip identification */
#define DME1737_COMPANY_SMSC 0x5c
#define DME1737_VERSTEP 0x88
#define DME1737_VERSTEP_MASK 0xf8
#define SCH311X_DEVICE 0x8c
#define SCH5027_VERSTEP 0x69
#define SCH5127_DEVICE 0x8e
/* Device ID values (global configuration register index 0x20) */
#define DME1737_ID_1 0x77
#define DME1737_ID_2 0x78
#define SCH3112_ID 0x7c
#define SCH3114_ID 0x7d
#define SCH3116_ID 0x7f
#define SCH5027_ID 0x89
#define SCH5127_ID 0x86
/* Length of ISA address segment */
#define DME1737_EXTENT 2
/* chip-dependent features */
#define HAS_TEMP_OFFSET (1 << 0) /* bit 0 */
#define HAS_VID (1 << 1) /* bit 1 */
#define HAS_ZONE3 (1 << 2) /* bit 2 */
#define HAS_ZONE_HYST (1 << 3) /* bit 3 */
#define HAS_PWM_MIN (1 << 4) /* bit 4 */
#define HAS_FAN(ix) (1 << ((ix) + 5)) /* bits 5-10 */
#define HAS_PWM(ix) (1 << ((ix) + 11)) /* bits 11-16 */
#define HAS_IN7 (1 << 17) /* bit 17 */
/* ---------------------------------------------------------------------
* Data structures and manipulation thereof
* --------------------------------------------------------------------- */
struct dme1737_data {
struct i2c_client *client; /* for I2C devices only */
struct device *hwmon_dev;
const char *name;
unsigned int addr; /* for ISA devices only */
struct mutex update_lock;
int valid; /* !=0 if following fields are valid */
unsigned long last_update; /* in jiffies */
unsigned long last_vbat; /* in jiffies */
enum chips type;
const int *in_nominal; /* pointer to IN_NOMINAL array */
u8 vid;
u8 pwm_rr_en;
u32 has_features;
/* Register values */
u16 in[8];
u8 in_min[8];
u8 in_max[8];
s16 temp[3];
s8 temp_min[3];
s8 temp_max[3];
s8 temp_offset[3];
u8 config;
u8 config2;
u8 vrm;
u16 fan[6];
u16 fan_min[6];
u8 fan_max[2];
u8 fan_opt[6];
u8 pwm[6];
u8 pwm_min[3];
u8 pwm_config[3];
u8 pwm_acz[3];
u8 pwm_freq[6];
u8 pwm_rr[2];
s8 zone_low[3];
s8 zone_abs[3];
u8 zone_hyst[2];
u32 alarms;
};
/* Nominal voltage values */
static const int IN_NOMINAL_DME1737[] = {5000, 2250, 3300, 5000, 12000, 3300,
3300};
static const int IN_NOMINAL_SCH311x[] = {2500, 1500, 3300, 5000, 12000, 3300,
3300};
static const int IN_NOMINAL_SCH5027[] = {5000, 2250, 3300, 1125, 1125, 3300,
3300};
static const int IN_NOMINAL_SCH5127[] = {2500, 2250, 3300, 1125, 1125, 3300,
3300, 1500};
#define IN_NOMINAL(type) ((type) == sch311x ? IN_NOMINAL_SCH311x : \
(type) == sch5027 ? IN_NOMINAL_SCH5027 : \
(type) == sch5127 ? IN_NOMINAL_SCH5127 : \
IN_NOMINAL_DME1737)
/*
* Voltage input
* Voltage inputs have 16 bits resolution, limit values have 8 bits
* resolution.
*/
static inline int IN_FROM_REG(int reg, int nominal, int res)
{
return (reg * nominal + (3 << (res - 3))) / (3 << (res - 2));
}
static inline int IN_TO_REG(long val, int nominal)
{
return clamp_val((val * 192 + nominal / 2) / nominal, 0, 255);
}
/*
* Temperature input
* The register values represent temperatures in 2's complement notation from
* -127 degrees C to +127 degrees C. Temp inputs have 16 bits resolution, limit
* values have 8 bits resolution.
*/
static inline int TEMP_FROM_REG(int reg, int res)
{
return (reg * 1000) >> (res - 8);
}
static inline int TEMP_TO_REG(long val)
{
return clamp_val((val < 0 ? val - 500 : val + 500) / 1000, -128, 127);
}
/* Temperature range */
static const int TEMP_RANGE[] = {2000, 2500, 3333, 4000, 5000, 6666, 8000,
10000, 13333, 16000, 20000, 26666, 32000,
40000, 53333, 80000};
static inline int TEMP_RANGE_FROM_REG(int reg)
{
return TEMP_RANGE[(reg >> 4) & 0x0f];
}
static int TEMP_RANGE_TO_REG(long val, int reg)
{
int i;
for (i = 15; i > 0; i--) {
if (val > (TEMP_RANGE[i] + TEMP_RANGE[i - 1] + 1) / 2)
break;
}
return (reg & 0x0f) | (i << 4);
}
/*
* Temperature hysteresis
* Register layout:
* reg[0] = [H1-3, H1-2, H1-1, H1-0, H2-3, H2-2, H2-1, H2-0]
* reg[1] = [H3-3, H3-2, H3-1, H3-0, xxxx, xxxx, xxxx, xxxx]
*/
static inline int TEMP_HYST_FROM_REG(int reg, int ix)
{
return (((ix == 1) ? reg : reg >> 4) & 0x0f) * 1000;
}
static inline int TEMP_HYST_TO_REG(long val, int ix, int reg)
{
int hyst = clamp_val((val + 500) / 1000, 0, 15);
return (ix == 1) ? (reg & 0xf0) | hyst : (reg & 0x0f) | (hyst << 4);
}
/* Fan input RPM */
static inline int FAN_FROM_REG(int reg, int tpc)
{
if (tpc)
return tpc * reg;
else
return (reg == 0 || reg == 0xffff) ? 0 : 90000 * 60 / reg;
}
static inline int FAN_TO_REG(long val, int tpc)
{
if (tpc) {
return clamp_val(val / tpc, 0, 0xffff);
} else {
return (val <= 0) ? 0xffff :
clamp_val(90000 * 60 / val, 0, 0xfffe);
}
}
/*
* Fan TPC (tach pulse count)
* Converts a register value to a TPC multiplier or returns 0 if the tachometer
* is configured in legacy (non-tpc) mode
*/
static inline int FAN_TPC_FROM_REG(int reg)
{
return (reg & 0x20) ? 0 : 60 >> (reg & 0x03);
}
/*
* Fan type
* The type of a fan is expressed in number of pulses-per-revolution that it
* emits
*/
static inline int FAN_TYPE_FROM_REG(int reg)
{
int edge = (reg >> 1) & 0x03;
return (edge > 0) ? 1 << (edge - 1) : 0;
}
static inline int FAN_TYPE_TO_REG(long val, int reg)
{
int edge = (val == 4) ? 3 : val;
return (reg & 0xf9) | (edge << 1);
}
/* Fan max RPM */
static const int FAN_MAX[] = {0x54, 0x38, 0x2a, 0x21, 0x1c, 0x18, 0x15, 0x12,
0x11, 0x0f, 0x0e};
static int FAN_MAX_FROM_REG(int reg)
{
int i;
for (i = 10; i > 0; i--) {
if (reg == FAN_MAX[i])
break;
}
return 1000 + i * 500;
}
static int FAN_MAX_TO_REG(long val)
{
int i;
for (i = 10; i > 0; i--) {
if (val > (1000 + (i - 1) * 500))
break;
}
return FAN_MAX[i];
}
/*
* PWM enable
* Register to enable mapping:
* 000: 2 fan on zone 1 auto
* 001: 2 fan on zone 2 auto
* 010: 2 fan on zone 3 auto
* 011: 0 fan full on
* 100: -1 fan disabled
* 101: 2 fan on hottest of zones 2,3 auto
* 110: 2 fan on hottest of zones 1,2,3 auto
* 111: 1 fan in manual mode
*/
static inline int PWM_EN_FROM_REG(int reg)
{
static const int en[] = {2, 2, 2, 0, -1, 2, 2, 1};
return en[(reg >> 5) & 0x07];
}
static inline int PWM_EN_TO_REG(int val, int reg)
{
int en = (val == 1) ? 7 : 3;
return (reg & 0x1f) | ((en & 0x07) << 5);
}
/*
* PWM auto channels zone
* Register to auto channels zone mapping (ACZ is a bitfield with bit x
* corresponding to zone x+1):
* 000: 001 fan on zone 1 auto
* 001: 010 fan on zone 2 auto
* 010: 100 fan on zone 3 auto
* 011: 000 fan full on
* 100: 000 fan disabled
* 101: 110 fan on hottest of zones 2,3 auto
* 110: 111 fan on hottest of zones 1,2,3 auto
* 111: 000 fan in manual mode
*/
static inline int PWM_ACZ_FROM_REG(int reg)
{
static const int acz[] = {1, 2, 4, 0, 0, 6, 7, 0};
return acz[(reg >> 5) & 0x07];
}
static inline int PWM_ACZ_TO_REG(long val, int reg)
{
int acz = (val == 4) ? 2 : val - 1;
return (reg & 0x1f) | ((acz & 0x07) << 5);
}
/* PWM frequency */
static const int PWM_FREQ[] = {11, 15, 22, 29, 35, 44, 59, 88,
15000, 20000, 30000, 25000, 0, 0, 0, 0};
static inline int PWM_FREQ_FROM_REG(int reg)
{
return PWM_FREQ[reg & 0x0f];
}
static int PWM_FREQ_TO_REG(long val, int reg)
{
int i;
/* the first two cases are special - stupid chip design! */
if (val > 27500) {
i = 10;
} else if (val > 22500) {
i = 11;
} else {
for (i = 9; i > 0; i--) {
if (val > (PWM_FREQ[i] + PWM_FREQ[i - 1] + 1) / 2)
break;
}
}
return (reg & 0xf0) | i;
}
/*
* PWM ramp rate
* Register layout:
* reg[0] = [OFF3, OFF2, OFF1, RES, RR1-E, RR1-2, RR1-1, RR1-0]
* reg[1] = [RR2-E, RR2-2, RR2-1, RR2-0, RR3-E, RR3-2, RR3-1, RR3-0]
*/
static const u8 PWM_RR[] = {206, 104, 69, 41, 26, 18, 10, 5};
static inline int PWM_RR_FROM_REG(int reg, int ix)
{
int rr = (ix == 1) ? reg >> 4 : reg;
return (rr & 0x08) ? PWM_RR[rr & 0x07] : 0;
}
static int PWM_RR_TO_REG(long val, int ix, int reg)
{
int i;
for (i = 0; i < 7; i++) {
if (val > (PWM_RR[i] + PWM_RR[i + 1] + 1) / 2)
break;
}
return (ix == 1) ? (reg & 0x8f) | (i << 4) : (reg & 0xf8) | i;
}
/* PWM ramp rate enable */
static inline int PWM_RR_EN_FROM_REG(int reg, int ix)
{
return PWM_RR_FROM_REG(reg, ix) ? 1 : 0;
}
static inline int PWM_RR_EN_TO_REG(long val, int ix, int reg)
{
int en = (ix == 1) ? 0x80 : 0x08;
return val ? reg | en : reg & ~en;
}
/*
* PWM min/off
* The PWM min/off bits are part of the PMW ramp rate register 0 (see above for
* the register layout).
*/
static inline int PWM_OFF_FROM_REG(int reg, int ix)
{
return (reg >> (ix + 5)) & 0x01;
}
static inline int PWM_OFF_TO_REG(int val, int ix, int reg)
{
return (reg & ~(1 << (ix + 5))) | ((val & 0x01) << (ix + 5));
}
/* ---------------------------------------------------------------------
* Device I/O access
*
* ISA access is performed through an index/data register pair and needs to
* be protected by a mutex during runtime (not required for initialization).
* We use data->update_lock for this and need to ensure that we acquire it
* before calling dme1737_read or dme1737_write.
* --------------------------------------------------------------------- */
static u8 dme1737_read(const struct dme1737_data *data, u8 reg)
{
struct i2c_client *client = data->client;
s32 val;
if (client) { /* I2C device */
val = i2c_smbus_read_byte_data(client, reg);
if (val < 0) {
dev_warn(&client->dev,
"Read from register 0x%02x failed! %s\n",
reg, DO_REPORT);
}
} else { /* ISA device */
outb(reg, data->addr);
val = inb(data->addr + 1);
}
return val;
}
static s32 dme1737_write(const struct dme1737_data *data, u8 reg, u8 val)
{
struct i2c_client *client = data->client;
s32 res = 0;
if (client) { /* I2C device */
res = i2c_smbus_write_byte_data(client, reg, val);
if (res < 0) {
dev_warn(&client->dev,
"Write to register 0x%02x failed! %s\n",
reg, DO_REPORT);
}
} else { /* ISA device */
outb(reg, data->addr);
outb(val, data->addr + 1);
}
return res;
}
static struct dme1737_data *dme1737_update_device(struct device *dev)
{
struct dme1737_data *data = dev_get_drvdata(dev);
int ix;
u8 lsb[6];
mutex_lock(&data->update_lock);
/* Enable a Vbat monitoring cycle every 10 mins */
if (time_after(jiffies, data->last_vbat + 600 * HZ) || !data->valid) {
dme1737_write(data, DME1737_REG_CONFIG, dme1737_read(data,
DME1737_REG_CONFIG) | 0x10);
data->last_vbat = jiffies;
}
/* Sample register contents every 1 sec */
if (time_after(jiffies, data->last_update + HZ) || !data->valid) {
if (data->has_features & HAS_VID) {
data->vid = dme1737_read(data, DME1737_REG_VID) &
0x3f;
}
/* In (voltage) registers */
for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
/*
* Voltage inputs are stored as 16 bit values even
* though they have only 12 bits resolution. This is
* to make it consistent with the temp inputs.
*/
if (ix == 7 && !(data->has_features & HAS_IN7))
continue;
data->in[ix] = dme1737_read(data,
DME1737_REG_IN(ix)) << 8;
data->in_min[ix] = dme1737_read(data,
DME1737_REG_IN_MIN(ix));
data->in_max[ix] = dme1737_read(data,
DME1737_REG_IN_MAX(ix));
}
/* Temp registers */
for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
/*
* Temp inputs are stored as 16 bit values even
* though they have only 12 bits resolution. This is
* to take advantage of implicit conversions between
* register values (2's complement) and temp values
* (signed decimal).
*/
data->temp[ix] = dme1737_read(data,
DME1737_REG_TEMP(ix)) << 8;
data->temp_min[ix] = dme1737_read(data,
DME1737_REG_TEMP_MIN(ix));
data->temp_max[ix] = dme1737_read(data,
DME1737_REG_TEMP_MAX(ix));
if (data->has_features & HAS_TEMP_OFFSET) {
data->temp_offset[ix] = dme1737_read(data,
DME1737_REG_TEMP_OFFSET(ix));
}
}
/*
* In and temp LSB registers
* The LSBs are latched when the MSBs are read, so the order in
* which the registers are read (MSB first, then LSB) is
* important!
*/
for (ix = 0; ix < ARRAY_SIZE(lsb); ix++) {
if (ix == 5 && !(data->has_features & HAS_IN7))
continue;
lsb[ix] = dme1737_read(data,
DME1737_REG_IN_TEMP_LSB(ix));
}
for (ix = 0; ix < ARRAY_SIZE(data->in); ix++) {
if (ix == 7 && !(data->has_features & HAS_IN7))
continue;
data->in[ix] |= (lsb[DME1737_REG_IN_LSB[ix]] <<
DME1737_REG_IN_LSB_SHL[ix]) & 0xf0;
}
for (ix = 0; ix < ARRAY_SIZE(data->temp); ix++) {
data->temp[ix] |= (lsb[DME1737_REG_TEMP_LSB[ix]] <<
DME1737_REG_TEMP_LSB_SHL[ix]) & 0xf0;
}
/* Fan registers */
for (ix = 0; ix < ARRAY_SIZE(data->fan); ix++) {
/*
* Skip reading registers if optional fans are not
* present
*/
if (!(data->has_features & HAS_FAN(ix)))
continue;
data->fan[ix] = dme1737_read(data,
DME1737_REG_FAN(ix));
data->fan[ix] |= dme1737_read(data,
DME1737_REG_FAN(ix) + 1) << 8;
data->fan_min[ix] = dme1737_read(data,
DME1737_REG_FAN_MIN(ix));
data->fan_min[ix] |= dme1737_read(data,
DME1737_REG_FAN_MIN(ix) + 1) << 8;
data->fan_opt[ix] = dme1737_read(data,
DME1737_REG_FAN_OPT(ix));
/* fan_max exists only for fan[5-6] */
if (ix > 3) {
data->fan_max[ix - 4] = dme1737_read(data,
DME1737_REG_FAN_MAX(ix));
}
}
/* PWM registers */
for (ix = 0; ix < ARRAY_SIZE(data->pwm); ix++) {
/*
* Skip reading registers if optional PWMs are not
* present
*/
if (!(data->has_features & HAS_PWM(ix)))
continue;
data->pwm[ix] = dme1737_read(data,
DME1737_REG_PWM(ix));
data->pwm_freq[ix] = dme1737_read(data,
DME1737_REG_PWM_FREQ(ix));
/* pwm_config and pwm_min exist only for pwm[1-3] */
if (ix < 3) {
data->pwm_config[ix] = dme1737_read(data,
DME1737_REG_PWM_CONFIG(ix));
data->pwm_min[ix] = dme1737_read(data,
DME1737_REG_PWM_MIN(ix));
}
}
for (ix = 0; ix < ARRAY_SIZE(data->pwm_rr); ix++) {
data->pwm_rr[ix] = dme1737_read(data,
DME1737_REG_PWM_RR(ix));
}
/* Thermal zone registers */
for (ix = 0; ix < ARRAY_SIZE(data->zone_low); ix++) {
/* Skip reading registers if zone3 is not present */
if ((ix == 2) && !(data->has_features & HAS_ZONE3))
continue;
/* sch5127 zone2 registers are special */
if ((ix == 1) && (data->type == sch5127)) {
data->zone_low[1] = dme1737_read(data,
DME1737_REG_ZONE_LOW(2));
data->zone_abs[1] = dme1737_read(data,
DME1737_REG_ZONE_ABS(2));
} else {
data->zone_low[ix] = dme1737_read(data,
DME1737_REG_ZONE_LOW(ix));
data->zone_abs[ix] = dme1737_read(data,
DME1737_REG_ZONE_ABS(ix));
}
}
if (data->has_features & HAS_ZONE_HYST) {
for (ix = 0; ix < ARRAY_SIZE(data->zone_hyst); ix++) {
data->zone_hyst[ix] = dme1737_read(data,
DME1737_REG_ZONE_HYST(ix));
}
}
/* Alarm registers */
data->alarms = dme1737_read(data,
DME1737_REG_ALARM1);
/*
* Bit 7 tells us if the other alarm registers are non-zero and
* therefore also need to be read
*/
if (data->alarms & 0x80) {
data->alarms |= dme1737_read(data,
DME1737_REG_ALARM2) << 8;
data->alarms |= dme1737_read(data,
DME1737_REG_ALARM3) << 16;
}
/*
* The ISA chips require explicit clearing of alarm bits.
* Don't worry, an alarm will come back if the condition
* that causes it still exists
*/
if (!data->client) {
if (data->alarms & 0xff0000)
dme1737_write(data, DME1737_REG_ALARM3, 0xff);
if (data->alarms & 0xff00)
dme1737_write(data, DME1737_REG_ALARM2, 0xff);
if (data->alarms & 0xff)
dme1737_write(data, DME1737_REG_ALARM1, 0xff);
}
data->last_update = jiffies;
data->valid = 1;
}
mutex_unlock(&data->update_lock);
return data;
}
/* ---------------------------------------------------------------------
* Voltage sysfs attributes
* ix = [0-7]
* --------------------------------------------------------------------- */
#define SYS_IN_INPUT 0
#define SYS_IN_MIN 1
#define SYS_IN_MAX 2
#define SYS_IN_ALARM 3
static ssize_t show_in(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dme1737_data *data = dme1737_update_device(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SYS_IN_INPUT:
res = IN_FROM_REG(data->in[ix], data->in_nominal[ix], 16);
break;
case SYS_IN_MIN:
res = IN_FROM_REG(data->in_min[ix], data->in_nominal[ix], 8);
break;
case SYS_IN_MAX:
res = IN_FROM_REG(data->in_max[ix], data->in_nominal[ix], 8);
break;
case SYS_IN_ALARM:
res = (data->alarms >> DME1737_BIT_ALARM_IN[ix]) & 0x01;
break;
default:
res = 0;
dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
}
static ssize_t set_in(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dme1737_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
switch (fn) {
case SYS_IN_MIN:
data->in_min[ix] = IN_TO_REG(val, data->in_nominal[ix]);
dme1737_write(data, DME1737_REG_IN_MIN(ix),
data->in_min[ix]);
break;
case SYS_IN_MAX:
data->in_max[ix] = IN_TO_REG(val, data->in_nominal[ix]);
dme1737_write(data, DME1737_REG_IN_MAX(ix),
data->in_max[ix]);
break;
default:
dev_dbg(dev, "Unknown function %d.\n", fn);
}
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* Temperature sysfs attributes
* ix = [0-2]
* --------------------------------------------------------------------- */
#define SYS_TEMP_INPUT 0
#define SYS_TEMP_MIN 1
#define SYS_TEMP_MAX 2
#define SYS_TEMP_OFFSET 3
#define SYS_TEMP_ALARM 4
#define SYS_TEMP_FAULT 5
static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dme1737_data *data = dme1737_update_device(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SYS_TEMP_INPUT:
res = TEMP_FROM_REG(data->temp[ix], 16);
break;
case SYS_TEMP_MIN:
res = TEMP_FROM_REG(data->temp_min[ix], 8);
break;
case SYS_TEMP_MAX:
res = TEMP_FROM_REG(data->temp_max[ix], 8);
break;
case SYS_TEMP_OFFSET:
res = TEMP_FROM_REG(data->temp_offset[ix], 8);
break;
case SYS_TEMP_ALARM:
res = (data->alarms >> DME1737_BIT_ALARM_TEMP[ix]) & 0x01;
break;
case SYS_TEMP_FAULT:
res = (((u16)data->temp[ix] & 0xff00) == 0x8000);
break;
default:
res = 0;
dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
}
static ssize_t set_temp(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dme1737_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
switch (fn) {
case SYS_TEMP_MIN:
data->temp_min[ix] = TEMP_TO_REG(val);
dme1737_write(data, DME1737_REG_TEMP_MIN(ix),
data->temp_min[ix]);
break;
case SYS_TEMP_MAX:
data->temp_max[ix] = TEMP_TO_REG(val);
dme1737_write(data, DME1737_REG_TEMP_MAX(ix),
data->temp_max[ix]);
break;
case SYS_TEMP_OFFSET:
data->temp_offset[ix] = TEMP_TO_REG(val);
dme1737_write(data, DME1737_REG_TEMP_OFFSET(ix),
data->temp_offset[ix]);
break;
default:
dev_dbg(dev, "Unknown function %d.\n", fn);
}
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* Zone sysfs attributes
* ix = [0-2]
* --------------------------------------------------------------------- */
#define SYS_ZONE_AUTO_CHANNELS_TEMP 0
#define SYS_ZONE_AUTO_POINT1_TEMP_HYST 1
#define SYS_ZONE_AUTO_POINT1_TEMP 2
#define SYS_ZONE_AUTO_POINT2_TEMP 3
#define SYS_ZONE_AUTO_POINT3_TEMP 4
static ssize_t show_zone(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dme1737_data *data = dme1737_update_device(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SYS_ZONE_AUTO_CHANNELS_TEMP:
/* check config2 for non-standard temp-to-zone mapping */
if ((ix == 1) && (data->config2 & 0x02))
res = 4;
else
res = 1 << ix;
break;
case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
res = TEMP_FROM_REG(data->zone_low[ix], 8) -
TEMP_HYST_FROM_REG(data->zone_hyst[ix == 2], ix);
break;
case SYS_ZONE_AUTO_POINT1_TEMP:
res = TEMP_FROM_REG(data->zone_low[ix], 8);
break;
case SYS_ZONE_AUTO_POINT2_TEMP:
/* pwm_freq holds the temp range bits in the upper nibble */
res = TEMP_FROM_REG(data->zone_low[ix], 8) +
TEMP_RANGE_FROM_REG(data->pwm_freq[ix]);
break;
case SYS_ZONE_AUTO_POINT3_TEMP:
res = TEMP_FROM_REG(data->zone_abs[ix], 8);
break;
default:
res = 0;
dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
}
static ssize_t set_zone(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dme1737_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
switch (fn) {
case SYS_ZONE_AUTO_POINT1_TEMP_HYST:
/* Refresh the cache */
data->zone_low[ix] = dme1737_read(data,
DME1737_REG_ZONE_LOW(ix));
/* Modify the temp hyst value */
data->zone_hyst[ix == 2] = TEMP_HYST_TO_REG(
TEMP_FROM_REG(data->zone_low[ix], 8) -
val, ix, dme1737_read(data,
DME1737_REG_ZONE_HYST(ix == 2)));
dme1737_write(data, DME1737_REG_ZONE_HYST(ix == 2),
data->zone_hyst[ix == 2]);
break;
case SYS_ZONE_AUTO_POINT1_TEMP:
data->zone_low[ix] = TEMP_TO_REG(val);
dme1737_write(data, DME1737_REG_ZONE_LOW(ix),
data->zone_low[ix]);
break;
case SYS_ZONE_AUTO_POINT2_TEMP:
/* Refresh the cache */
data->zone_low[ix] = dme1737_read(data,
DME1737_REG_ZONE_LOW(ix));
/*
* Modify the temp range value (which is stored in the upper
* nibble of the pwm_freq register)
*/
data->pwm_freq[ix] = TEMP_RANGE_TO_REG(val -
TEMP_FROM_REG(data->zone_low[ix], 8),
dme1737_read(data,
DME1737_REG_PWM_FREQ(ix)));
dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
data->pwm_freq[ix]);
break;
case SYS_ZONE_AUTO_POINT3_TEMP:
data->zone_abs[ix] = TEMP_TO_REG(val);
dme1737_write(data, DME1737_REG_ZONE_ABS(ix),
data->zone_abs[ix]);
break;
default:
dev_dbg(dev, "Unknown function %d.\n", fn);
}
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* Fan sysfs attributes
* ix = [0-5]
* --------------------------------------------------------------------- */
#define SYS_FAN_INPUT 0
#define SYS_FAN_MIN 1
#define SYS_FAN_MAX 2
#define SYS_FAN_ALARM 3
#define SYS_FAN_TYPE 4
static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dme1737_data *data = dme1737_update_device(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SYS_FAN_INPUT:
res = FAN_FROM_REG(data->fan[ix],
ix < 4 ? 0 :
FAN_TPC_FROM_REG(data->fan_opt[ix]));
break;
case SYS_FAN_MIN:
res = FAN_FROM_REG(data->fan_min[ix],
ix < 4 ? 0 :
FAN_TPC_FROM_REG(data->fan_opt[ix]));
break;
case SYS_FAN_MAX:
/* only valid for fan[5-6] */
res = FAN_MAX_FROM_REG(data->fan_max[ix - 4]);
break;
case SYS_FAN_ALARM:
res = (data->alarms >> DME1737_BIT_ALARM_FAN[ix]) & 0x01;
break;
case SYS_FAN_TYPE:
/* only valid for fan[1-4] */
res = FAN_TYPE_FROM_REG(data->fan_opt[ix]);
break;
default:
res = 0;
dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
}
static ssize_t set_fan(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dme1737_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
switch (fn) {
case SYS_FAN_MIN:
if (ix < 4) {
data->fan_min[ix] = FAN_TO_REG(val, 0);
} else {
/* Refresh the cache */
data->fan_opt[ix] = dme1737_read(data,
DME1737_REG_FAN_OPT(ix));
/* Modify the fan min value */
data->fan_min[ix] = FAN_TO_REG(val,
FAN_TPC_FROM_REG(data->fan_opt[ix]));
}
dme1737_write(data, DME1737_REG_FAN_MIN(ix),
data->fan_min[ix] & 0xff);
dme1737_write(data, DME1737_REG_FAN_MIN(ix) + 1,
data->fan_min[ix] >> 8);
break;
case SYS_FAN_MAX:
/* Only valid for fan[5-6] */
data->fan_max[ix - 4] = FAN_MAX_TO_REG(val);
dme1737_write(data, DME1737_REG_FAN_MAX(ix),
data->fan_max[ix - 4]);
break;
case SYS_FAN_TYPE:
/* Only valid for fan[1-4] */
if (!(val == 1 || val == 2 || val == 4)) {
count = -EINVAL;
dev_warn(dev,
"Fan type value %ld not supported. Choose one of 1, 2, or 4.\n",
val);
goto exit;
}
data->fan_opt[ix] = FAN_TYPE_TO_REG(val, dme1737_read(data,
DME1737_REG_FAN_OPT(ix)));
dme1737_write(data, DME1737_REG_FAN_OPT(ix),
data->fan_opt[ix]);
break;
default:
dev_dbg(dev, "Unknown function %d.\n", fn);
}
exit:
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* PWM sysfs attributes
* ix = [0-4]
* --------------------------------------------------------------------- */
#define SYS_PWM 0
#define SYS_PWM_FREQ 1
#define SYS_PWM_ENABLE 2
#define SYS_PWM_RAMP_RATE 3
#define SYS_PWM_AUTO_CHANNELS_ZONE 4
#define SYS_PWM_AUTO_PWM_MIN 5
#define SYS_PWM_AUTO_POINT1_PWM 6
#define SYS_PWM_AUTO_POINT2_PWM 7
static ssize_t show_pwm(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dme1737_data *data = dme1737_update_device(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
int res;
switch (fn) {
case SYS_PWM:
if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 0)
res = 255;
else
res = data->pwm[ix];
break;
case SYS_PWM_FREQ:
res = PWM_FREQ_FROM_REG(data->pwm_freq[ix]);
break;
case SYS_PWM_ENABLE:
if (ix >= 3)
res = 1; /* pwm[5-6] hard-wired to manual mode */
else
res = PWM_EN_FROM_REG(data->pwm_config[ix]);
break;
case SYS_PWM_RAMP_RATE:
/* Only valid for pwm[1-3] */
res = PWM_RR_FROM_REG(data->pwm_rr[ix > 0], ix);
break;
case SYS_PWM_AUTO_CHANNELS_ZONE:
/* Only valid for pwm[1-3] */
if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2)
res = PWM_ACZ_FROM_REG(data->pwm_config[ix]);
else
res = data->pwm_acz[ix];
break;
case SYS_PWM_AUTO_PWM_MIN:
/* Only valid for pwm[1-3] */
if (PWM_OFF_FROM_REG(data->pwm_rr[0], ix))
res = data->pwm_min[ix];
else
res = 0;
break;
case SYS_PWM_AUTO_POINT1_PWM:
/* Only valid for pwm[1-3] */
res = data->pwm_min[ix];
break;
case SYS_PWM_AUTO_POINT2_PWM:
/* Only valid for pwm[1-3] */
res = 255; /* hard-wired */
break;
default:
res = 0;
dev_dbg(dev, "Unknown function %d.\n", fn);
}
return sprintf(buf, "%d\n", res);
}
static struct attribute *dme1737_pwm_chmod_attr[];
static void dme1737_chmod_file(struct device*, struct attribute*, umode_t);
static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dme1737_data *data = dev_get_drvdata(dev);
struct sensor_device_attribute_2
*sensor_attr_2 = to_sensor_dev_attr_2(attr);
int ix = sensor_attr_2->index;
int fn = sensor_attr_2->nr;
long val;
int err;
err = kstrtol(buf, 10, &val);
if (err)
return err;
mutex_lock(&data->update_lock);
switch (fn) {
case SYS_PWM:
data->pwm[ix] = clamp_val(val, 0, 255);
dme1737_write(data, DME1737_REG_PWM(ix), data->pwm[ix]);
break;
case SYS_PWM_FREQ:
data->pwm_freq[ix] = PWM_FREQ_TO_REG(val, dme1737_read(data,
DME1737_REG_PWM_FREQ(ix)));
dme1737_write(data, DME1737_REG_PWM_FREQ(ix),
data->pwm_freq[ix]);
break;
case SYS_PWM_ENABLE:
/* Only valid for pwm[1-3] */
if (val < 0 || val > 2) {
count = -EINVAL;
dev_warn(dev,
"PWM enable %ld not supported. Choose one of 0, 1, or 2.\n",
val);
goto exit;
}
/* Refresh the cache */
data->pwm_config[ix] = dme1737_read(data,
DME1737_REG_PWM_CONFIG(ix));
if (val == PWM_EN_FROM_REG(data->pwm_config[ix])) {
/* Bail out if no change */
goto exit;
}
/* Do some housekeeping if we are currently in auto mode */
if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
/* Save the current zone channel assignment */
data->pwm_acz[ix] = PWM_ACZ_FROM_REG(
data->pwm_config[ix]);
/* Save the current ramp rate state and disable it */
data->pwm_rr[ix > 0] = dme1737_read(data,
DME1737_REG_PWM_RR(ix > 0));
data->pwm_rr_en &= ~(1 << ix);
if (PWM_RR_EN_FROM_REG(data->pwm_rr[ix > 0], ix)) {
data->pwm_rr_en |= (1 << ix);
data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(0, ix,
data->pwm_rr[ix > 0]);
dme1737_write(data,
DME1737_REG_PWM_RR(ix > 0),
data->pwm_rr[ix > 0]);
}
}
/* Set the new PWM mode */
switch (val) {
case 0:
/* Change permissions of pwm[ix] to read-only */
dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
S_IRUGO);
/* Turn fan fully on */
data->pwm_config[ix] = PWM_EN_TO_REG(0,
data->pwm_config[ix]);
dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
data->pwm_config[ix]);
break;
case 1:
/* Turn on manual mode */
data->pwm_config[ix] = PWM_EN_TO_REG(1,
data->pwm_config[ix]);
dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
data->pwm_config[ix]);
/* Change permissions of pwm[ix] to read-writeable */
dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
S_IRUGO | S_IWUSR);
break;
case 2:
/* Change permissions of pwm[ix] to read-only */
dme1737_chmod_file(dev, dme1737_pwm_chmod_attr[ix],
S_IRUGO);
/*
* Turn on auto mode using the saved zone channel
* assignment
*/
data->pwm_config[ix] = PWM_ACZ_TO_REG(
data->pwm_acz[ix],
data->pwm_config[ix]);
dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
data->pwm_config[ix]);
/* Enable PWM ramp rate if previously enabled */
if (data->pwm_rr_en & (1 << ix)) {
data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(1, ix,
dme1737_read(data,
DME1737_REG_PWM_RR(ix > 0)));
dme1737_write(data,
DME1737_REG_PWM_RR(ix > 0),
data->pwm_rr[ix > 0]);
}
break;
}
break;
case SYS_PWM_RAMP_RATE:
/* Only valid for pwm[1-3] */
/* Refresh the cache */
data->pwm_config[ix] = dme1737_read(data,
DME1737_REG_PWM_CONFIG(ix));
data->pwm_rr[ix > 0] = dme1737_read(data,
DME1737_REG_PWM_RR(ix > 0));
/* Set the ramp rate value */
if (val > 0) {
data->pwm_rr[ix > 0] = PWM_RR_TO_REG(val, ix,
data->pwm_rr[ix > 0]);
}
/*
* Enable/disable the feature only if the associated PWM
* output is in automatic mode.
*/
if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
data->pwm_rr[ix > 0] = PWM_RR_EN_TO_REG(val > 0, ix,
data->pwm_rr[ix > 0]);
}
dme1737_write(data, DME1737_REG_PWM_RR(ix > 0),
data->pwm_rr[ix > 0]);
break;
case SYS_PWM_AUTO_CHANNELS_ZONE:
/* Only valid for pwm[1-3] */
if (!(val == 1 || val == 2 || val == 4 ||
val == 6 || val == 7)) {
count = -EINVAL;
dev_warn(dev,
"PWM auto channels zone %ld not supported. Choose one of 1, 2, 4, 6, "
"or 7.\n", val);
goto exit;
}
/* Refresh the cache */
data->pwm_config[ix] = dme1737_read(data,
DME1737_REG_PWM_CONFIG(ix));
if (PWM_EN_FROM_REG(data->pwm_config[ix]) == 2) {
/*
* PWM is already in auto mode so update the temp
* channel assignment
*/
data->pwm_config[ix] = PWM_ACZ_TO_REG(val,
data->pwm_config[ix]);
dme1737_write(data, DME1737_REG_PWM_CONFIG(ix),
data->pwm_config[ix]);
} else {
/*
* PWM is not in auto mode so we save the temp
* channel assignment for later use
*/
data->pwm_acz[ix] = val;
}
break;
case SYS_PWM_AUTO_PWM_MIN:
/* Only valid for pwm[1-3] */
/* Refresh the cache */
data->pwm_min[ix] = dme1737_read(data,
DME1737_REG_PWM_MIN(ix));
/*
* There are only 2 values supported for the auto_pwm_min
* value: 0 or auto_point1_pwm. So if the temperature drops
* below the auto_point1_temp_hyst value, the fan either turns
* off or runs at auto_point1_pwm duty-cycle.
*/
if (val > ((data->pwm_min[ix] + 1) / 2)) {
data->pwm_rr[0] = PWM_OFF_TO_REG(1, ix,
dme1737_read(data,
DME1737_REG_PWM_RR(0)));
} else {
data->pwm_rr[0] = PWM_OFF_TO_REG(0, ix,
dme1737_read(data,
DME1737_REG_PWM_RR(0)));
}
dme1737_write(data, DME1737_REG_PWM_RR(0),
data->pwm_rr[0]);
break;
case SYS_PWM_AUTO_POINT1_PWM:
/* Only valid for pwm[1-3] */
data->pwm_min[ix] = clamp_val(val, 0, 255);
dme1737_write(data, DME1737_REG_PWM_MIN(ix),
data->pwm_min[ix]);
break;
default:
dev_dbg(dev, "Unknown function %d.\n", fn);
}
exit:
mutex_unlock(&data->update_lock);
return count;
}
/* ---------------------------------------------------------------------
* Miscellaneous sysfs attributes
* --------------------------------------------------------------------- */
static ssize_t show_vrm(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct i2c_client *client = to_i2c_client(dev);
struct dme1737_data *data = i2c_get_clientdata(client);
return sprintf(buf, "%d\n", data->vrm);
}
static ssize_t set_vrm(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct dme1737_data *data = dev_get_drvdata(dev);
unsigned long val;
int err;
err = kstrtoul(buf, 10, &val);
if (err)
return err;
if (val > 255)
return -EINVAL;
data->vrm = val;
return count;
}
static ssize_t show_vid(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dme1737_data *data = dme1737_update_device(dev);
return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
}
static ssize_t show_name(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct dme1737_data *data = dev_get_drvdata(dev);
return sprintf(buf, "%s\n", data->name);
}
/* ---------------------------------------------------------------------
* Sysfs device attribute defines and structs
* --------------------------------------------------------------------- */
/* Voltages 0-7 */
#define SENSOR_DEVICE_ATTR_IN(ix) \
static SENSOR_DEVICE_ATTR_2(in##ix##_input, S_IRUGO, \
show_in, NULL, SYS_IN_INPUT, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_min, S_IRUGO | S_IWUSR, \
show_in, set_in, SYS_IN_MIN, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_max, S_IRUGO | S_IWUSR, \
show_in, set_in, SYS_IN_MAX, ix); \
static SENSOR_DEVICE_ATTR_2(in##ix##_alarm, S_IRUGO, \
show_in, NULL, SYS_IN_ALARM, ix)
SENSOR_DEVICE_ATTR_IN(0);
SENSOR_DEVICE_ATTR_IN(1);
SENSOR_DEVICE_ATTR_IN(2);
SENSOR_DEVICE_ATTR_IN(3);
SENSOR_DEVICE_ATTR_IN(4);
SENSOR_DEVICE_ATTR_IN(5);
SENSOR_DEVICE_ATTR_IN(6);
SENSOR_DEVICE_ATTR_IN(7);
/* Temperatures 1-3 */
#define SENSOR_DEVICE_ATTR_TEMP(ix) \
static SENSOR_DEVICE_ATTR_2(temp##ix##_input, S_IRUGO, \
show_temp, NULL, SYS_TEMP_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_min, S_IRUGO | S_IWUSR, \
show_temp, set_temp, SYS_TEMP_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_max, S_IRUGO | S_IWUSR, \
show_temp, set_temp, SYS_TEMP_MAX, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_offset, S_IRUGO, \
show_temp, set_temp, SYS_TEMP_OFFSET, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_alarm, S_IRUGO, \
show_temp, NULL, SYS_TEMP_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(temp##ix##_fault, S_IRUGO, \
show_temp, NULL, SYS_TEMP_FAULT, ix-1)
SENSOR_DEVICE_ATTR_TEMP(1);
SENSOR_DEVICE_ATTR_TEMP(2);
SENSOR_DEVICE_ATTR_TEMP(3);
/* Zones 1-3 */
#define SENSOR_DEVICE_ATTR_ZONE(ix) \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_channels_temp, S_IRUGO, \
show_zone, NULL, SYS_ZONE_AUTO_CHANNELS_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp_hyst, S_IRUGO, \
show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP_HYST, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point1_temp, S_IRUGO, \
show_zone, set_zone, SYS_ZONE_AUTO_POINT1_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point2_temp, S_IRUGO, \
show_zone, set_zone, SYS_ZONE_AUTO_POINT2_TEMP, ix-1); \
static SENSOR_DEVICE_ATTR_2(zone##ix##_auto_point3_temp, S_IRUGO, \
show_zone, set_zone, SYS_ZONE_AUTO_POINT3_TEMP, ix-1)
SENSOR_DEVICE_ATTR_ZONE(1);
SENSOR_DEVICE_ATTR_ZONE(2);
SENSOR_DEVICE_ATTR_ZONE(3);
/* Fans 1-4 */
#define SENSOR_DEVICE_ATTR_FAN_1TO4(ix) \
static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
show_fan, NULL, SYS_FAN_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
show_fan, set_fan, SYS_FAN_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
show_fan, NULL, SYS_FAN_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_type, S_IRUGO | S_IWUSR, \
show_fan, set_fan, SYS_FAN_TYPE, ix-1)
SENSOR_DEVICE_ATTR_FAN_1TO4(1);
SENSOR_DEVICE_ATTR_FAN_1TO4(2);
SENSOR_DEVICE_ATTR_FAN_1TO4(3);
SENSOR_DEVICE_ATTR_FAN_1TO4(4);
/* Fans 5-6 */
#define SENSOR_DEVICE_ATTR_FAN_5TO6(ix) \
static SENSOR_DEVICE_ATTR_2(fan##ix##_input, S_IRUGO, \
show_fan, NULL, SYS_FAN_INPUT, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_min, S_IRUGO | S_IWUSR, \
show_fan, set_fan, SYS_FAN_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_alarm, S_IRUGO, \
show_fan, NULL, SYS_FAN_ALARM, ix-1); \
static SENSOR_DEVICE_ATTR_2(fan##ix##_max, S_IRUGO | S_IWUSR, \
show_fan, set_fan, SYS_FAN_MAX, ix-1)
SENSOR_DEVICE_ATTR_FAN_5TO6(5);
SENSOR_DEVICE_ATTR_FAN_5TO6(6);
/* PWMs 1-3 */
#define SENSOR_DEVICE_ATTR_PWM_1TO3(ix) \
static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM_ENABLE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_ramp_rate, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM_RAMP_RATE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_channels_zone, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM_AUTO_CHANNELS_ZONE, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_pwm_min, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM_AUTO_PWM_MIN, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point1_pwm, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM_AUTO_POINT1_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_auto_point2_pwm, S_IRUGO, \
show_pwm, NULL, SYS_PWM_AUTO_POINT2_PWM, ix-1)
SENSOR_DEVICE_ATTR_PWM_1TO3(1);
SENSOR_DEVICE_ATTR_PWM_1TO3(2);
SENSOR_DEVICE_ATTR_PWM_1TO3(3);
/* PWMs 5-6 */
#define SENSOR_DEVICE_ATTR_PWM_5TO6(ix) \
static SENSOR_DEVICE_ATTR_2(pwm##ix, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_freq, S_IRUGO, \
show_pwm, set_pwm, SYS_PWM_FREQ, ix-1); \
static SENSOR_DEVICE_ATTR_2(pwm##ix##_enable, S_IRUGO, \
show_pwm, NULL, SYS_PWM_ENABLE, ix-1)
SENSOR_DEVICE_ATTR_PWM_5TO6(5);
SENSOR_DEVICE_ATTR_PWM_5TO6(6);
/* Misc */
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); /* for ISA devices */
/*
* This struct holds all the attributes that are always present and need to be
* created unconditionally. The attributes that need modification of their
* permissions are created read-only and write permissions are added or removed
* on the fly when required
*/
static struct attribute *dme1737_attr[] = {
/* Voltages */
&sensor_dev_attr_in0_input.dev_attr.attr,
&sensor_dev_attr_in0_min.dev_attr.attr,
&sensor_dev_attr_in0_max.dev_attr.attr,
&sensor_dev_attr_in0_alarm.dev_attr.attr,
&sensor_dev_attr_in1_input.dev_attr.attr,
&sensor_dev_attr_in1_min.dev_attr.attr,
&sensor_dev_attr_in1_max.dev_attr.attr,
&sensor_dev_attr_in1_alarm.dev_attr.attr,
&sensor_dev_attr_in2_input.dev_attr.attr,
&sensor_dev_attr_in2_min.dev_attr.attr,
&sensor_dev_attr_in2_max.dev_attr.attr,
&sensor_dev_attr_in2_alarm.dev_attr.attr,
&sensor_dev_attr_in3_input.dev_attr.attr,
&sensor_dev_attr_in3_min.dev_attr.attr,
&sensor_dev_attr_in3_max.dev_attr.attr,
&sensor_dev_attr_in3_alarm.dev_attr.attr,
&sensor_dev_attr_in4_input.dev_attr.attr,
&sensor_dev_attr_in4_min.dev_attr.attr,
&sensor_dev_attr_in4_max.dev_attr.attr,
&sensor_dev_attr_in4_alarm.dev_attr.attr,
&sensor_dev_attr_in5_input.dev_attr.attr,
&sensor_dev_attr_in5_min.dev_attr.attr,
&sensor_dev_attr_in5_max.dev_attr.attr,
&sensor_dev_attr_in5_alarm.dev_attr.attr,
&sensor_dev_attr_in6_input.dev_attr.attr,
&sensor_dev_attr_in6_min.dev_attr.attr,
&sensor_dev_attr_in6_max.dev_attr.attr,
&sensor_dev_attr_in6_alarm.dev_attr.attr,
/* Temperatures */
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp1_min.dev_attr.attr,
&sensor_dev_attr_temp1_max.dev_attr.attr,
&sensor_dev_attr_temp1_alarm.dev_attr.attr,
&sensor_dev_attr_temp1_fault.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp2_min.dev_attr.attr,
&sensor_dev_attr_temp2_max.dev_attr.attr,
&sensor_dev_attr_temp2_alarm.dev_attr.attr,
&sensor_dev_attr_temp2_fault.dev_attr.attr,
&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_alarm.dev_attr.attr,
&sensor_dev_attr_temp3_fault.dev_attr.attr,
/* Zones */
&sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
&sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
&sensor_dev_attr_zone1_auto_channels_temp.dev_attr.attr,
&sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
&sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
&sensor_dev_attr_zone2_auto_channels_temp.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_group = {
.attrs = dme1737_attr,
};
/*
* The following struct holds temp offset attributes, which are not available
* in all chips. The following chips support them:
* DME1737, SCH311x
*/
static struct attribute *dme1737_temp_offset_attr[] = {
&sensor_dev_attr_temp1_offset.dev_attr.attr,
&sensor_dev_attr_temp2_offset.dev_attr.attr,
&sensor_dev_attr_temp3_offset.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_temp_offset_group = {
.attrs = dme1737_temp_offset_attr,
};
/*
* The following struct holds VID related attributes, which are not available
* in all chips. The following chips support them:
* DME1737
*/
static struct attribute *dme1737_vid_attr[] = {
&dev_attr_vrm.attr,
&dev_attr_cpu0_vid.attr,
NULL
};
static const struct attribute_group dme1737_vid_group = {
.attrs = dme1737_vid_attr,
};
/*
* The following struct holds temp zone 3 related attributes, which are not
* available in all chips. The following chips support them:
* DME1737, SCH311x, SCH5027
*/
static struct attribute *dme1737_zone3_attr[] = {
&sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
&sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
&sensor_dev_attr_zone3_auto_channels_temp.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_zone3_group = {
.attrs = dme1737_zone3_attr,
};
/*
* The following struct holds temp zone hysteresis related attributes, which
* are not available in all chips. The following chips support them:
* DME1737, SCH311x
*/
static struct attribute *dme1737_zone_hyst_attr[] = {
&sensor_dev_attr_zone1_auto_point1_temp_hyst.dev_attr.attr,
&sensor_dev_attr_zone2_auto_point1_temp_hyst.dev_attr.attr,
&sensor_dev_attr_zone3_auto_point1_temp_hyst.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_zone_hyst_group = {
.attrs = dme1737_zone_hyst_attr,
};
/*
* The following struct holds voltage in7 related attributes, which
* are not available in all chips. The following chips support them:
* SCH5127
*/
static struct attribute *dme1737_in7_attr[] = {
&sensor_dev_attr_in7_input.dev_attr.attr,
&sensor_dev_attr_in7_min.dev_attr.attr,
&sensor_dev_attr_in7_max.dev_attr.attr,
&sensor_dev_attr_in7_alarm.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_in7_group = {
.attrs = dme1737_in7_attr,
};
/*
* The following structs hold the PWM attributes, some of which are optional.
* Their creation depends on the chip configuration which is determined during
* module load.
*/
static struct attribute *dme1737_pwm1_attr[] = {
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm1_freq.dev_attr.attr,
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
NULL
};
static struct attribute *dme1737_pwm2_attr[] = {
&sensor_dev_attr_pwm2.dev_attr.attr,
&sensor_dev_attr_pwm2_freq.dev_attr.attr,
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
&sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr,
NULL
};
static struct attribute *dme1737_pwm3_attr[] = {
&sensor_dev_attr_pwm3.dev_attr.attr,
&sensor_dev_attr_pwm3_freq.dev_attr.attr,
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
&sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr,
NULL
};
static struct attribute *dme1737_pwm5_attr[] = {
&sensor_dev_attr_pwm5.dev_attr.attr,
&sensor_dev_attr_pwm5_freq.dev_attr.attr,
&sensor_dev_attr_pwm5_enable.dev_attr.attr,
NULL
};
static struct attribute *dme1737_pwm6_attr[] = {
&sensor_dev_attr_pwm6.dev_attr.attr,
&sensor_dev_attr_pwm6_freq.dev_attr.attr,
&sensor_dev_attr_pwm6_enable.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_pwm_group[] = {
{ .attrs = dme1737_pwm1_attr },
{ .attrs = dme1737_pwm2_attr },
{ .attrs = dme1737_pwm3_attr },
{ .attrs = NULL },
{ .attrs = dme1737_pwm5_attr },
{ .attrs = dme1737_pwm6_attr },
};
/*
* The following struct holds auto PWM min attributes, which are not available
* in all chips. Their creation depends on the chip type which is determined
* during module load.
*/
static struct attribute *dme1737_auto_pwm_min_attr[] = {
&sensor_dev_attr_pwm1_auto_pwm_min.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_pwm_min.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_pwm_min.dev_attr.attr,
};
/*
* The following structs hold the fan attributes, some of which are optional.
* Their creation depends on the chip configuration which is determined during
* module load.
*/
static struct attribute *dme1737_fan1_attr[] = {
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_fan1_min.dev_attr.attr,
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
&sensor_dev_attr_fan1_type.dev_attr.attr,
NULL
};
static struct attribute *dme1737_fan2_attr[] = {
&sensor_dev_attr_fan2_input.dev_attr.attr,
&sensor_dev_attr_fan2_min.dev_attr.attr,
&sensor_dev_attr_fan2_alarm.dev_attr.attr,
&sensor_dev_attr_fan2_type.dev_attr.attr,
NULL
};
static struct attribute *dme1737_fan3_attr[] = {
&sensor_dev_attr_fan3_input.dev_attr.attr,
&sensor_dev_attr_fan3_min.dev_attr.attr,
&sensor_dev_attr_fan3_alarm.dev_attr.attr,
&sensor_dev_attr_fan3_type.dev_attr.attr,
NULL
};
static struct attribute *dme1737_fan4_attr[] = {
&sensor_dev_attr_fan4_input.dev_attr.attr,
&sensor_dev_attr_fan4_min.dev_attr.attr,
&sensor_dev_attr_fan4_alarm.dev_attr.attr,
&sensor_dev_attr_fan4_type.dev_attr.attr,
NULL
};
static struct attribute *dme1737_fan5_attr[] = {
&sensor_dev_attr_fan5_input.dev_attr.attr,
&sensor_dev_attr_fan5_min.dev_attr.attr,
&sensor_dev_attr_fan5_alarm.dev_attr.attr,
&sensor_dev_attr_fan5_max.dev_attr.attr,
NULL
};
static struct attribute *dme1737_fan6_attr[] = {
&sensor_dev_attr_fan6_input.dev_attr.attr,
&sensor_dev_attr_fan6_min.dev_attr.attr,
&sensor_dev_attr_fan6_alarm.dev_attr.attr,
&sensor_dev_attr_fan6_max.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_fan_group[] = {
{ .attrs = dme1737_fan1_attr },
{ .attrs = dme1737_fan2_attr },
{ .attrs = dme1737_fan3_attr },
{ .attrs = dme1737_fan4_attr },
{ .attrs = dme1737_fan5_attr },
{ .attrs = dme1737_fan6_attr },
};
/*
* The permissions of the following zone attributes are changed to read-
* writeable if the chip is *not* locked. Otherwise they stay read-only.
*/
static struct attribute *dme1737_zone_chmod_attr[] = {
&sensor_dev_attr_zone1_auto_point1_temp.dev_attr.attr,
&sensor_dev_attr_zone1_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_zone1_auto_point3_temp.dev_attr.attr,
&sensor_dev_attr_zone2_auto_point1_temp.dev_attr.attr,
&sensor_dev_attr_zone2_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_zone2_auto_point3_temp.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_zone_chmod_group = {
.attrs = dme1737_zone_chmod_attr,
};
/*
* The permissions of the following zone 3 attributes are changed to read-
* writeable if the chip is *not* locked. Otherwise they stay read-only.
*/
static struct attribute *dme1737_zone3_chmod_attr[] = {
&sensor_dev_attr_zone3_auto_point1_temp.dev_attr.attr,
&sensor_dev_attr_zone3_auto_point2_temp.dev_attr.attr,
&sensor_dev_attr_zone3_auto_point3_temp.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_zone3_chmod_group = {
.attrs = dme1737_zone3_chmod_attr,
};
/*
* The permissions of the following PWM attributes are changed to read-
* writeable if the chip is *not* locked and the respective PWM is available.
* Otherwise they stay read-only.
*/
static struct attribute *dme1737_pwm1_chmod_attr[] = {
&sensor_dev_attr_pwm1_freq.dev_attr.attr,
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_pwm1_ramp_rate.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_channels_zone.dev_attr.attr,
&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
NULL
};
static struct attribute *dme1737_pwm2_chmod_attr[] = {
&sensor_dev_attr_pwm2_freq.dev_attr.attr,
&sensor_dev_attr_pwm2_enable.dev_attr.attr,
&sensor_dev_attr_pwm2_ramp_rate.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_channels_zone.dev_attr.attr,
&sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr,
NULL
};
static struct attribute *dme1737_pwm3_chmod_attr[] = {
&sensor_dev_attr_pwm3_freq.dev_attr.attr,
&sensor_dev_attr_pwm3_enable.dev_attr.attr,
&sensor_dev_attr_pwm3_ramp_rate.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_channels_zone.dev_attr.attr,
&sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr,
NULL
};
static struct attribute *dme1737_pwm5_chmod_attr[] = {
&sensor_dev_attr_pwm5.dev_attr.attr,
&sensor_dev_attr_pwm5_freq.dev_attr.attr,
NULL
};
static struct attribute *dme1737_pwm6_chmod_attr[] = {
&sensor_dev_attr_pwm6.dev_attr.attr,
&sensor_dev_attr_pwm6_freq.dev_attr.attr,
NULL
};
static const struct attribute_group dme1737_pwm_chmod_group[] = {
{ .attrs = dme1737_pwm1_chmod_attr },
{ .attrs = dme1737_pwm2_chmod_attr },
{ .attrs = dme1737_pwm3_chmod_attr },
{ .attrs = NULL },
{ .attrs = dme1737_pwm5_chmod_attr },
{ .attrs = dme1737_pwm6_chmod_attr },
};
/*
* Pwm[1-3] are read-writeable if the associated pwm is in manual mode and the
* chip is not locked. Otherwise they are read-only.
*/
static struct attribute *dme1737_pwm_chmod_attr[] = {
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_pwm2.dev_attr.attr,
&sensor_dev_attr_pwm3.dev_attr.attr,
};
/* ---------------------------------------------------------------------
* Super-IO functions
* --------------------------------------------------------------------- */
static inline void dme1737_sio_enter(int sio_cip)
{
outb(0x55, sio_cip);
}
static inline void dme1737_sio_exit(int sio_cip)
{
outb(0xaa, sio_cip);
}
static inline int dme1737_sio_inb(int sio_cip, int reg)
{
outb(reg, sio_cip);
return inb(sio_cip + 1);
}
static inline void dme1737_sio_outb(int sio_cip, int reg, int val)
{
outb(reg, sio_cip);
outb(val, sio_cip + 1);
}
/* ---------------------------------------------------------------------
* Device initialization
* --------------------------------------------------------------------- */
static int dme1737_i2c_get_features(int, struct dme1737_data*);
static void dme1737_chmod_file(struct device *dev,
struct attribute *attr, umode_t mode)
{
if (sysfs_chmod_file(&dev->kobj, attr, mode)) {
dev_warn(dev, "Failed to change permissions of %s.\n",
attr->name);
}
}
static void dme1737_chmod_group(struct device *dev,
const struct attribute_group *group,
umode_t mode)
{
struct attribute **attr;
for (attr = group->attrs; *attr; attr++)
dme1737_chmod_file(dev, *attr, mode);
}
static void dme1737_remove_files(struct device *dev)
{
struct dme1737_data *data = dev_get_drvdata(dev);
int ix;
for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
if (data->has_features & HAS_FAN(ix)) {
sysfs_remove_group(&dev->kobj,
&dme1737_fan_group[ix]);
}
}
for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
if (data->has_features & HAS_PWM(ix)) {
sysfs_remove_group(&dev->kobj,
&dme1737_pwm_group[ix]);
if ((data->has_features & HAS_PWM_MIN) && ix < 3) {
sysfs_remove_file(&dev->kobj,
dme1737_auto_pwm_min_attr[ix]);
}
}
}
if (data->has_features & HAS_TEMP_OFFSET)
sysfs_remove_group(&dev->kobj, &dme1737_temp_offset_group);
if (data->has_features & HAS_VID)
sysfs_remove_group(&dev->kobj, &dme1737_vid_group);
if (data->has_features & HAS_ZONE3)
sysfs_remove_group(&dev->kobj, &dme1737_zone3_group);
if (data->has_features & HAS_ZONE_HYST)
sysfs_remove_group(&dev->kobj, &dme1737_zone_hyst_group);
if (data->has_features & HAS_IN7)
sysfs_remove_group(&dev->kobj, &dme1737_in7_group);
sysfs_remove_group(&dev->kobj, &dme1737_group);
if (!data->client)
sysfs_remove_file(&dev->kobj, &dev_attr_name.attr);
}
static int dme1737_create_files(struct device *dev)
{
struct dme1737_data *data = dev_get_drvdata(dev);
int err, ix;
/* Create a name attribute for ISA devices */
if (!data->client) {
err = sysfs_create_file(&dev->kobj, &dev_attr_name.attr);
if (err)
goto exit;
}
/* Create standard sysfs attributes */
err = sysfs_create_group(&dev->kobj, &dme1737_group);
if (err)
goto exit_remove;
/* Create chip-dependent sysfs attributes */
if (data->has_features & HAS_TEMP_OFFSET) {
err = sysfs_create_group(&dev->kobj,
&dme1737_temp_offset_group);
if (err)
goto exit_remove;
}
if (data->has_features & HAS_VID) {
err = sysfs_create_group(&dev->kobj, &dme1737_vid_group);
if (err)
goto exit_remove;
}
if (data->has_features & HAS_ZONE3) {
err = sysfs_create_group(&dev->kobj, &dme1737_zone3_group);
if (err)
goto exit_remove;
}
if (data->has_features & HAS_ZONE_HYST) {
err = sysfs_create_group(&dev->kobj, &dme1737_zone_hyst_group);
if (err)
goto exit_remove;
}
if (data->has_features & HAS_IN7) {
err = sysfs_create_group(&dev->kobj, &dme1737_in7_group);
if (err)
goto exit_remove;
}
/* Create fan sysfs attributes */
for (ix = 0; ix < ARRAY_SIZE(dme1737_fan_group); ix++) {
if (data->has_features & HAS_FAN(ix)) {
err = sysfs_create_group(&dev->kobj,
&dme1737_fan_group[ix]);
if (err)
goto exit_remove;
}
}
/* Create PWM sysfs attributes */
for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_group); ix++) {
if (data->has_features & HAS_PWM(ix)) {
err = sysfs_create_group(&dev->kobj,
&dme1737_pwm_group[ix]);
if (err)
goto exit_remove;
if ((data->has_features & HAS_PWM_MIN) && (ix < 3)) {
err = sysfs_create_file(&dev->kobj,
dme1737_auto_pwm_min_attr[ix]);
if (err)
goto exit_remove;
}
}
}
/*
* Inform if the device is locked. Otherwise change the permissions of
* selected attributes from read-only to read-writeable.
*/
if (data->config & 0x02) {
dev_info(dev,
"Device is locked. Some attributes will be read-only.\n");
} else {
/* Change permissions of zone sysfs attributes */
dme1737_chmod_group(dev, &dme1737_zone_chmod_group,
S_IRUGO | S_IWUSR);
/* Change permissions of chip-dependent sysfs attributes */
if (data->has_features & HAS_TEMP_OFFSET) {
dme1737_chmod_group(dev, &dme1737_temp_offset_group,
S_IRUGO | S_IWUSR);
}
if (data->has_features & HAS_ZONE3) {
dme1737_chmod_group(dev, &dme1737_zone3_chmod_group,
S_IRUGO | S_IWUSR);
}
if (data->has_features & HAS_ZONE_HYST) {
dme1737_chmod_group(dev, &dme1737_zone_hyst_group,
S_IRUGO | S_IWUSR);
}
/* Change permissions of PWM sysfs attributes */
for (ix = 0; ix < ARRAY_SIZE(dme1737_pwm_chmod_group); ix++) {
if (data->has_features & HAS_PWM(ix)) {
dme1737_chmod_group(dev,
&dme1737_pwm_chmod_group[ix],
S_IRUGO | S_IWUSR);
if ((data->has_features & HAS_PWM_MIN) &&
ix < 3) {
dme1737_chmod_file(dev,
dme1737_auto_pwm_min_attr[ix],
S_IRUGO | S_IWUSR);
}
}
}
/* Change permissions of pwm[1-3] if in manual mode */
for (ix = 0; ix < 3; ix++) {
if ((data->has_features & HAS_PWM(ix)) &&
(PWM_EN_FROM_REG(data->pwm_config[ix]) == 1)) {
dme1737_chmod_file(dev,
dme1737_pwm_chmod_attr[ix],
S_IRUGO | S_IWUSR);
}
}
}
return 0;
exit_remove:
dme1737_remove_files(dev);
exit:
return err;
}
static int dme1737_init_device(struct device *dev)
{
struct dme1737_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
int ix;
u8 reg;
/* Point to the right nominal voltages array */
data->in_nominal = IN_NOMINAL(data->type);
data->config = dme1737_read(data, DME1737_REG_CONFIG);
/* Inform if part is not monitoring/started */
if (!(data->config & 0x01)) {
if (!force_start) {
dev_err(dev,
"Device is not monitoring. Use the force_start load parameter to override.\n");
return -EFAULT;
}
/* Force monitoring */
data->config |= 0x01;
dme1737_write(data, DME1737_REG_CONFIG, data->config);
}
/* Inform if part is not ready */
if (!(data->config & 0x04)) {
dev_err(dev, "Device is not ready.\n");
return -EFAULT;
}
/*
* Determine which optional fan and pwm features are enabled (only
* valid for I2C devices)
*/
if (client) { /* I2C chip */
data->config2 = dme1737_read(data, DME1737_REG_CONFIG2);
/* Check if optional fan3 input is enabled */
if (data->config2 & 0x04)
data->has_features |= HAS_FAN(2);
/*
* Fan4 and pwm3 are only available if the client's I2C address
* is the default 0x2e. Otherwise the I/Os associated with
* these functions are used for addr enable/select.
*/
if (client->addr == 0x2e)
data->has_features |= HAS_FAN(3) | HAS_PWM(2);
/*
* Determine which of the optional fan[5-6] and pwm[5-6]
* features are enabled. For this, we need to query the runtime
* registers through the Super-IO LPC interface. Try both
* config ports 0x2e and 0x4e.
*/
if (dme1737_i2c_get_features(0x2e, data) &&
dme1737_i2c_get_features(0x4e, data)) {
dev_warn(dev,
"Failed to query Super-IO for optional features.\n");
}
}
/* Fan[1-2] and pwm[1-2] are present in all chips */
data->has_features |= HAS_FAN(0) | HAS_FAN(1) | HAS_PWM(0) | HAS_PWM(1);
/* Chip-dependent features */
switch (data->type) {
case dme1737:
data->has_features |= HAS_TEMP_OFFSET | HAS_VID | HAS_ZONE3 |
HAS_ZONE_HYST | HAS_PWM_MIN;
break;
case sch311x:
data->has_features |= HAS_TEMP_OFFSET | HAS_ZONE3 |
HAS_ZONE_HYST | HAS_PWM_MIN | HAS_FAN(2) | HAS_PWM(2);
break;
case sch5027:
data->has_features |= HAS_ZONE3;
break;
case sch5127:
data->has_features |= HAS_FAN(2) | HAS_PWM(2) | HAS_IN7;
break;
default:
break;
}
dev_info(dev,
"Optional features: pwm3=%s, pwm5=%s, pwm6=%s, fan3=%s, fan4=%s, fan5=%s, fan6=%s.\n",
(data->has_features & HAS_PWM(2)) ? "yes" : "no",
(data->has_features & HAS_PWM(4)) ? "yes" : "no",
(data->has_features & HAS_PWM(5)) ? "yes" : "no",
(data->has_features & HAS_FAN(2)) ? "yes" : "no",
(data->has_features & HAS_FAN(3)) ? "yes" : "no",
(data->has_features & HAS_FAN(4)) ? "yes" : "no",
(data->has_features & HAS_FAN(5)) ? "yes" : "no");
reg = dme1737_read(data, DME1737_REG_TACH_PWM);
/* Inform if fan-to-pwm mapping differs from the default */
if (client && reg != 0xa4) { /* I2C chip */
dev_warn(dev,
"Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d, fan4->pwm%d. %s\n",
(reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
((reg >> 4) & 0x03) + 1, ((reg >> 6) & 0x03) + 1,
DO_REPORT);
} else if (!client && reg != 0x24) { /* ISA chip */
dev_warn(dev,
"Non-standard fan to pwm mapping: fan1->pwm%d, fan2->pwm%d, fan3->pwm%d. %s\n",
(reg & 0x03) + 1, ((reg >> 2) & 0x03) + 1,
((reg >> 4) & 0x03) + 1, DO_REPORT);
}
/*
* Switch pwm[1-3] to manual mode if they are currently disabled and
* set the duty-cycles to 0% (which is identical to the PWMs being
* disabled).
*/
if (!(data->config & 0x02)) {
for (ix = 0; ix < 3; ix++) {
data->pwm_config[ix] = dme1737_read(data,
DME1737_REG_PWM_CONFIG(ix));
if ((data->has_features & HAS_PWM(ix)) &&
(PWM_EN_FROM_REG(data->pwm_config[ix]) == -1)) {
dev_info(dev,
"Switching pwm%d to manual mode.\n",
ix + 1);
data->pwm_config[ix] = PWM_EN_TO_REG(1,
data->pwm_config[ix]);
dme1737_write(data, DME1737_REG_PWM(ix), 0);
dme1737_write(data,
DME1737_REG_PWM_CONFIG(ix),
data->pwm_config[ix]);
}
}
}
/* Initialize the default PWM auto channels zone (acz) assignments */
data->pwm_acz[0] = 1; /* pwm1 -> zone1 */
data->pwm_acz[1] = 2; /* pwm2 -> zone2 */
data->pwm_acz[2] = 4; /* pwm3 -> zone3 */
/* Set VRM */
if (data->has_features & HAS_VID)
data->vrm = vid_which_vrm();
return 0;
}
/* ---------------------------------------------------------------------
* I2C device detection and registration
* --------------------------------------------------------------------- */
static struct i2c_driver dme1737_i2c_driver;
static int dme1737_i2c_get_features(int sio_cip, struct dme1737_data *data)
{
int err = 0, reg;
u16 addr;
dme1737_sio_enter(sio_cip);
/*
* Check device ID
* We currently know about two kinds of DME1737 and SCH5027.
*/
reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
if (!(reg == DME1737_ID_1 || reg == DME1737_ID_2 ||
reg == SCH5027_ID)) {
err = -ENODEV;
goto exit;
}
/* Select logical device A (runtime registers) */
dme1737_sio_outb(sio_cip, 0x07, 0x0a);
/* Get the base address of the runtime registers */
addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
dme1737_sio_inb(sio_cip, 0x61);
if (!addr) {
err = -ENODEV;
goto exit;
}
/*
* Read the runtime registers to determine which optional features
* are enabled and available. Bits [3:2] of registers 0x43-0x46 are set
* to '10' if the respective feature is enabled.
*/
if ((inb(addr + 0x43) & 0x0c) == 0x08) /* fan6 */
data->has_features |= HAS_FAN(5);
if ((inb(addr + 0x44) & 0x0c) == 0x08) /* pwm6 */
data->has_features |= HAS_PWM(5);
if ((inb(addr + 0x45) & 0x0c) == 0x08) /* fan5 */
data->has_features |= HAS_FAN(4);
if ((inb(addr + 0x46) & 0x0c) == 0x08) /* pwm5 */
data->has_features |= HAS_PWM(4);
exit:
dme1737_sio_exit(sio_cip);
return err;
}
/* Return 0 if detection is successful, -ENODEV otherwise */
static int dme1737_i2c_detect(struct i2c_client *client,
struct i2c_board_info *info)
{
struct i2c_adapter *adapter = client->adapter;
struct device *dev = &adapter->dev;
u8 company, verstep = 0;
const char *name;
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
company = i2c_smbus_read_byte_data(client, DME1737_REG_COMPANY);
verstep = i2c_smbus_read_byte_data(client, DME1737_REG_VERSTEP);
if (company == DME1737_COMPANY_SMSC &&
verstep == SCH5027_VERSTEP) {
name = "sch5027";
} else if (company == DME1737_COMPANY_SMSC &&
(verstep & DME1737_VERSTEP_MASK) == DME1737_VERSTEP) {
name = "dme1737";
} else {
return -ENODEV;
}
dev_info(dev, "Found a %s chip at 0x%02x (rev 0x%02x).\n",
verstep == SCH5027_VERSTEP ? "SCH5027" : "DME1737",
client->addr, verstep);
strlcpy(info->type, name, I2C_NAME_SIZE);
return 0;
}
static int dme1737_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct dme1737_data *data;
struct device *dev = &client->dev;
int err;
data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->type = id->driver_data;
data->client = client;
data->name = client->name;
mutex_init(&data->update_lock);
/* Initialize the DME1737 chip */
err = dme1737_init_device(dev);
if (err) {
dev_err(dev, "Failed to initialize device.\n");
return err;
}
/* Create sysfs files */
err = dme1737_create_files(dev);
if (err) {
dev_err(dev, "Failed to create sysfs files.\n");
return err;
}
/* Register device */
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
dev_err(dev, "Failed to register device.\n");
err = PTR_ERR(data->hwmon_dev);
goto exit_remove;
}
return 0;
exit_remove:
dme1737_remove_files(dev);
return err;
}
static int dme1737_i2c_remove(struct i2c_client *client)
{
struct dme1737_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
dme1737_remove_files(&client->dev);
return 0;
}
static const struct i2c_device_id dme1737_id[] = {
{ "dme1737", dme1737 },
{ "sch5027", sch5027 },
{ }
};
MODULE_DEVICE_TABLE(i2c, dme1737_id);
static struct i2c_driver dme1737_i2c_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "dme1737",
},
.probe = dme1737_i2c_probe,
.remove = dme1737_i2c_remove,
.id_table = dme1737_id,
.detect = dme1737_i2c_detect,
.address_list = normal_i2c,
};
/* ---------------------------------------------------------------------
* ISA device detection and registration
* --------------------------------------------------------------------- */
static int __init dme1737_isa_detect(int sio_cip, unsigned short *addr)
{
int err = 0, reg;
unsigned short base_addr;
dme1737_sio_enter(sio_cip);
/*
* Check device ID
* We currently know about SCH3112, SCH3114, SCH3116, and SCH5127
*/
reg = force_id ? force_id : dme1737_sio_inb(sio_cip, 0x20);
if (!(reg == SCH3112_ID || reg == SCH3114_ID || reg == SCH3116_ID ||
reg == SCH5127_ID)) {
err = -ENODEV;
goto exit;
}
/* Select logical device A (runtime registers) */
dme1737_sio_outb(sio_cip, 0x07, 0x0a);
/* Get the base address of the runtime registers */
base_addr = (dme1737_sio_inb(sio_cip, 0x60) << 8) |
dme1737_sio_inb(sio_cip, 0x61);
if (!base_addr) {
pr_err("Base address not set\n");
err = -ENODEV;
goto exit;
}
/*
* Access to the hwmon registers is through an index/data register
* pair located at offset 0x70/0x71.
*/
*addr = base_addr + 0x70;
exit:
dme1737_sio_exit(sio_cip);
return err;
}
static int __init dme1737_isa_device_add(unsigned short addr)
{
struct resource res = {
.start = addr,
.end = addr + DME1737_EXTENT - 1,
.name = "dme1737",
.flags = IORESOURCE_IO,
};
int err;
err = acpi_check_resource_conflict(&res);
if (err)
goto exit;
pdev = platform_device_alloc("dme1737", addr);
if (!pdev) {
pr_err("Failed to allocate device\n");
err = -ENOMEM;
goto exit;
}
err = platform_device_add_resources(pdev, &res, 1);
if (err) {
pr_err("Failed to add device resource (err = %d)\n", err);
goto exit_device_put;
}
err = platform_device_add(pdev);
if (err) {
pr_err("Failed to add device (err = %d)\n", err);
goto exit_device_put;
}
return 0;
exit_device_put:
platform_device_put(pdev);
pdev = NULL;
exit:
return err;
}
static int dme1737_isa_probe(struct platform_device *pdev)
{
u8 company, device;
struct resource *res;
struct dme1737_data *data;
struct device *dev = &pdev->dev;
int err;
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
if (!devm_request_region(dev, res->start, DME1737_EXTENT, "dme1737")) {
dev_err(dev, "Failed to request region 0x%04x-0x%04x.\n",
(unsigned short)res->start,
(unsigned short)res->start + DME1737_EXTENT - 1);
return -EBUSY;
}
data = devm_kzalloc(dev, sizeof(struct dme1737_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->addr = res->start;
platform_set_drvdata(pdev, data);
/* Skip chip detection if module is loaded with force_id parameter */
switch (force_id) {
case SCH3112_ID:
case SCH3114_ID:
case SCH3116_ID:
data->type = sch311x;
break;
case SCH5127_ID:
data->type = sch5127;
break;
default:
company = dme1737_read(data, DME1737_REG_COMPANY);
device = dme1737_read(data, DME1737_REG_DEVICE);
if ((company == DME1737_COMPANY_SMSC) &&
(device == SCH311X_DEVICE)) {
data->type = sch311x;
} else if ((company == DME1737_COMPANY_SMSC) &&
(device == SCH5127_DEVICE)) {
data->type = sch5127;
} else {
return -ENODEV;
}
}
if (data->type == sch5127)
data->name = "sch5127";
else
data->name = "sch311x";
/* Initialize the mutex */
mutex_init(&data->update_lock);
dev_info(dev, "Found a %s chip at 0x%04x\n",
data->type == sch5127 ? "SCH5127" : "SCH311x", data->addr);
/* Initialize the chip */
err = dme1737_init_device(dev);
if (err) {
dev_err(dev, "Failed to initialize device.\n");
return err;
}
/* Create sysfs files */
err = dme1737_create_files(dev);
if (err) {
dev_err(dev, "Failed to create sysfs files.\n");
return err;
}
/* Register device */
data->hwmon_dev = hwmon_device_register(dev);
if (IS_ERR(data->hwmon_dev)) {
dev_err(dev, "Failed to register device.\n");
err = PTR_ERR(data->hwmon_dev);
goto exit_remove_files;
}
return 0;
exit_remove_files:
dme1737_remove_files(dev);
return err;
}
static int dme1737_isa_remove(struct platform_device *pdev)
{
struct dme1737_data *data = platform_get_drvdata(pdev);
hwmon_device_unregister(data->hwmon_dev);
dme1737_remove_files(&pdev->dev);
return 0;
}
static struct platform_driver dme1737_isa_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "dme1737",
},
.probe = dme1737_isa_probe,
.remove = dme1737_isa_remove,
};
/* ---------------------------------------------------------------------
* Module initialization and cleanup
* --------------------------------------------------------------------- */
static int __init dme1737_init(void)
{
int err;
unsigned short addr;
err = i2c_add_driver(&dme1737_i2c_driver);
if (err)
goto exit;
if (dme1737_isa_detect(0x2e, &addr) &&
dme1737_isa_detect(0x4e, &addr) &&
(!probe_all_addr ||
(dme1737_isa_detect(0x162e, &addr) &&
dme1737_isa_detect(0x164e, &addr)))) {
/* Return 0 if we didn't find an ISA device */
return 0;
}
err = platform_driver_register(&dme1737_isa_driver);
if (err)
goto exit_del_i2c_driver;
/* Sets global pdev as a side effect */
err = dme1737_isa_device_add(addr);
if (err)
goto exit_del_isa_driver;
return 0;
exit_del_isa_driver:
platform_driver_unregister(&dme1737_isa_driver);
exit_del_i2c_driver:
i2c_del_driver(&dme1737_i2c_driver);
exit:
return err;
}
static void __exit dme1737_exit(void)
{
if (pdev) {
platform_device_unregister(pdev);
platform_driver_unregister(&dme1737_isa_driver);
}
i2c_del_driver(&dme1737_i2c_driver);
}
MODULE_AUTHOR("Juerg Haefliger <juergh@gmail.com>");
MODULE_DESCRIPTION("DME1737 sensors");
MODULE_LICENSE("GPL");
module_init(dme1737_init);
module_exit(dme1737_exit);
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