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hwmon: Add support for Winbond W83L786NG/NR
Signed-off-by: Kevin Lo <kevlo@kevlo.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
This commit is contained in:
Kevin Lo
Mark M. Hoffman
parent
ce9c2f449b
commit
85f03bccd6
54
Documentation/hwmon/w83l786ng
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54
Documentation/hwmon/w83l786ng
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@ -0,0 +1,54 @@
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Kernel driver w83l786ng
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=====================
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Supported chips:
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* Winbond W83L786NG/W83L786NR
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Prefix: 'w83l786ng'
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Addresses scanned: I2C 0x2e - 0x2f
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Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83L786NRNG09.pdf
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Author: Kevin Lo <kevlo@kevlo.org>
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Module Parameters
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-----------------
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* reset boolean
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(default 0)
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Use 'reset=1' to reset the chip (via index 0x40, bit 7). The default
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behavior is no chip reset to preserve BIOS settings
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Description
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-----------
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This driver implements support for Winbond W83L786NG/W83L786NR chips.
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The driver implements two temperature sensors, two fan rotation speed
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sensors, and three voltage sensors.
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Temperatures are measured in degrees Celsius and measurement resolution is 1
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degC for temp1 and temp2.
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Fan rotation speeds are reported in RPM (rotations per minute). Fan readings
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readings can be divided by a programmable divider (1, 2, 4, 8, 16, 32, 64
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or 128 for fan 1/2) to give the readings more range or accuracy.
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Voltage sensors (also known as IN sensors) report their values in millivolts.
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An alarm is triggered if the voltage has crossed a programmable minimum
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or maximum limit.
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/sys files
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----------
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pwm[1-2] - this file stores PWM duty cycle or DC value (fan speed) in range:
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0 (stop) to 255 (full)
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pwm[1-2]_enable - this file controls mode of fan/temperature control:
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* 0 Manual Mode
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* 1 Thermal Cruise
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* 2 Smart Fan II
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* 4 FAN_SET
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pwm[1-2]_mode - Select PWM of DC mode
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* 0 DC
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* 1 PWM
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tolerance[1-2] - Value in degrees of Celsius (degC) for +- T
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@ -683,6 +683,16 @@ config SENSORS_W83L785TS
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This driver can also be built as a module. If so, the module
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will be called w83l785ts.
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config SENSORS_W83L786NG
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tristate "Winbond W83L786NG, W83L786NR"
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depends on I2C && EXPERIMENTAL
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help
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If you say yes here you get support for the Winbond W83L786NG
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and W83L786NR sensor chips.
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This driver can also be built as a module. If so, the module
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will be called w83l786ng.
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config SENSORS_W83627HF
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tristate "Winbond W83627HF, W83627THF, W83637HF, W83687THF, W83697HF"
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select HWMON_VID
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@ -68,6 +68,7 @@ obj-$(CONFIG_SENSORS_VT1211) += vt1211.o
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obj-$(CONFIG_SENSORS_VT8231) += vt8231.o
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obj-$(CONFIG_SENSORS_W83627EHF) += w83627ehf.o
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obj-$(CONFIG_SENSORS_W83L785TS) += w83l785ts.o
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obj-$(CONFIG_SENSORS_W83L786NG) += w83l786ng.o
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ifeq ($(CONFIG_HWMON_DEBUG_CHIP),y)
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EXTRA_CFLAGS += -DDEBUG
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821
drivers/hwmon/w83l786ng.c
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821
drivers/hwmon/w83l786ng.c
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@ -0,0 +1,821 @@
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/*
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w83l786ng.c - Linux kernel driver for hardware monitoring
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Copyright (c) 2007 Kevin Lo <kevlo@kevlo.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation - version 2.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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*/
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/*
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Supports following chips:
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Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
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w83l786ng 3 2 2 2 0x7b 0x5ca3 yes no
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-vid.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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/* Addresses to scan */
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static unsigned short normal_i2c[] = { 0x2e, 0x2f, I2C_CLIENT_END };
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_1(w83l786ng);
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static int reset;
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module_param(reset, bool, 0);
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MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended");
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#define W83L786NG_REG_IN_MIN(nr) (0x2C + (nr) * 2)
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#define W83L786NG_REG_IN_MAX(nr) (0x2B + (nr) * 2)
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#define W83L786NG_REG_IN(nr) ((nr) + 0x20)
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#define W83L786NG_REG_FAN(nr) ((nr) + 0x28)
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#define W83L786NG_REG_FAN_MIN(nr) ((nr) + 0x3B)
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#define W83L786NG_REG_CONFIG 0x40
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#define W83L786NG_REG_ALARM1 0x41
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#define W83L786NG_REG_ALARM2 0x42
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#define W83L786NG_REG_GPIO_EN 0x47
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#define W83L786NG_REG_MAN_ID2 0x4C
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#define W83L786NG_REG_MAN_ID1 0x4D
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#define W83L786NG_REG_CHIP_ID 0x4E
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#define W83L786NG_REG_DIODE 0x53
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#define W83L786NG_REG_FAN_DIV 0x54
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#define W83L786NG_REG_FAN_CFG 0x80
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#define W83L786NG_REG_TOLERANCE 0x8D
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static const u8 W83L786NG_REG_TEMP[2][3] = {
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{ 0x25, /* TEMP 0 in DataSheet */
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0x35, /* TEMP 0 Over in DataSheet */
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0x36 }, /* TEMP 0 Hyst in DataSheet */
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{ 0x26, /* TEMP 1 in DataSheet */
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0x37, /* TEMP 1 Over in DataSheet */
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0x38 } /* TEMP 1 Hyst in DataSheet */
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};
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static const u8 W83L786NG_PWM_MODE_SHIFT[] = {6, 7};
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static const u8 W83L786NG_PWM_ENABLE_SHIFT[] = {2, 4};
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/* FAN Duty Cycle, be used to control */
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static const u8 W83L786NG_REG_PWM[] = {0x81, 0x87};
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static inline u8
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FAN_TO_REG(long rpm, int div)
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{
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if (rpm == 0)
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return 255;
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rpm = SENSORS_LIMIT(rpm, 1, 1000000);
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return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
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}
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#define FAN_FROM_REG(val,div) ((val) == 0 ? -1 : \
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((val) == 255 ? 0 : \
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1350000 / ((val) * (div))))
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/* for temp */
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#define TEMP_TO_REG(val) (SENSORS_LIMIT(((val) < 0 ? (val)+0x100*1000 \
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: (val)) / 1000, 0, 0xff))
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#define TEMP_FROM_REG(val) (((val) & 0x80 ? (val)-0x100 : (val)) * 1000)
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/* The analog voltage inputs have 8mV LSB. Since the sysfs output is
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in mV as would be measured on the chip input pin, need to just
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multiply/divide by 8 to translate from/to register values. */
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#define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 4) / 8), 0, 255))
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#define IN_FROM_REG(val) ((val) * 8)
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#define DIV_FROM_REG(val) (1 << (val))
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static inline u8
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DIV_TO_REG(long val)
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{
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int i;
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val = SENSORS_LIMIT(val, 1, 128) >> 1;
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for (i = 0; i < 7; i++) {
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if (val == 0)
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break;
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val >>= 1;
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}
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return ((u8) i);
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}
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struct w83l786ng_data {
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struct i2c_client client;
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struct device *hwmon_dev;
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struct mutex update_lock;
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char valid; /* !=0 if following fields are valid */
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unsigned long last_updated; /* In jiffies */
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unsigned long last_nonvolatile; /* In jiffies, last time we update the
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nonvolatile registers */
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u8 in[3];
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u8 in_max[3];
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u8 in_min[3];
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u8 fan[2];
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u8 fan_div[2];
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u8 fan_min[2];
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u8 temp_type[2];
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u8 temp[2][3];
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u8 pwm[2];
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u8 pwm_mode[2]; /* 0->DC variable voltage
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1->PWM variable duty cycle */
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u8 pwm_enable[2]; /* 1->manual
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2->thermal cruise (also called SmartFan I) */
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u8 tolerance[2];
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};
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static int w83l786ng_attach_adapter(struct i2c_adapter *adapter);
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static int w83l786ng_detect(struct i2c_adapter *adapter, int address, int kind);
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static int w83l786ng_detach_client(struct i2c_client *client);
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static void w83l786ng_init_client(struct i2c_client *client);
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static struct w83l786ng_data *w83l786ng_update_device(struct device *dev);
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static struct i2c_driver w83l786ng_driver = {
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.driver = {
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.name = "w83l786ng",
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},
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.attach_adapter = w83l786ng_attach_adapter,
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.detach_client = w83l786ng_detach_client,
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};
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static u8
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w83l786ng_read_value(struct i2c_client *client, u8 reg)
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{
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return i2c_smbus_read_byte_data(client, reg);
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}
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static int
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w83l786ng_write_value(struct i2c_client *client, u8 reg, u8 value)
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{
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return i2c_smbus_write_byte_data(client, reg, value);
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}
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/* following are the sysfs callback functions */
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#define show_in_reg(reg) \
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static ssize_t \
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show_##reg(struct device *dev, struct device_attribute *attr, \
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char *buf) \
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{ \
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int nr = to_sensor_dev_attr(attr)->index; \
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struct w83l786ng_data *data = w83l786ng_update_device(dev); \
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return sprintf(buf,"%d\n", IN_FROM_REG(data->reg[nr])); \
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}
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show_in_reg(in)
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show_in_reg(in_min)
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show_in_reg(in_max)
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#define store_in_reg(REG, reg) \
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static ssize_t \
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store_in_##reg (struct device *dev, struct device_attribute *attr, \
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const char *buf, size_t count) \
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{ \
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int nr = to_sensor_dev_attr(attr)->index; \
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struct i2c_client *client = to_i2c_client(dev); \
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struct w83l786ng_data *data = i2c_get_clientdata(client); \
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unsigned long val = simple_strtoul(buf, NULL, 10); \
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mutex_lock(&data->update_lock); \
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data->in_##reg[nr] = IN_TO_REG(val); \
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w83l786ng_write_value(client, W83L786NG_REG_IN_##REG(nr), \
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data->in_##reg[nr]); \
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mutex_unlock(&data->update_lock); \
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return count; \
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}
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store_in_reg(MIN, min)
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store_in_reg(MAX, max)
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static struct sensor_device_attribute sda_in_input[] = {
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SENSOR_ATTR(in0_input, S_IRUGO, show_in, NULL, 0),
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SENSOR_ATTR(in1_input, S_IRUGO, show_in, NULL, 1),
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SENSOR_ATTR(in2_input, S_IRUGO, show_in, NULL, 2),
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};
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static struct sensor_device_attribute sda_in_min[] = {
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SENSOR_ATTR(in0_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 0),
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SENSOR_ATTR(in1_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 1),
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SENSOR_ATTR(in2_min, S_IWUSR | S_IRUGO, show_in_min, store_in_min, 2),
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};
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static struct sensor_device_attribute sda_in_max[] = {
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SENSOR_ATTR(in0_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 0),
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SENSOR_ATTR(in1_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 1),
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SENSOR_ATTR(in2_max, S_IWUSR | S_IRUGO, show_in_max, store_in_max, 2),
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};
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#define show_fan_reg(reg) \
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static ssize_t show_##reg(struct device *dev, struct device_attribute *attr, \
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char *buf) \
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{ \
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int nr = to_sensor_dev_attr(attr)->index; \
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struct w83l786ng_data *data = w83l786ng_update_device(dev); \
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return sprintf(buf,"%d\n", \
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FAN_FROM_REG(data->fan[nr], DIV_FROM_REG(data->fan_div[nr]))); \
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}
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show_fan_reg(fan);
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show_fan_reg(fan_min);
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static ssize_t
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store_fan_min(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct w83l786ng_data *data = i2c_get_clientdata(client);
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u32 val;
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val = simple_strtoul(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
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w83l786ng_write_value(client, W83L786NG_REG_FAN_MIN(nr),
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data->fan_min[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static ssize_t
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show_fan_div(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct w83l786ng_data *data = w83l786ng_update_device(dev);
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return sprintf(buf, "%u\n", DIV_FROM_REG(data->fan_div[nr]));
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}
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/* Note: we save and restore the fan minimum here, because its value is
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determined in part by the fan divisor. This follows the principle of
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least surprise; the user doesn't expect the fan minimum to change just
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because the divisor changed. */
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static ssize_t
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store_fan_div(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int nr = to_sensor_dev_attr(attr)->index;
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struct i2c_client *client = to_i2c_client(dev);
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struct w83l786ng_data *data = i2c_get_clientdata(client);
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unsigned long min;
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u8 tmp_fan_div;
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u8 fan_div_reg;
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u8 keep_mask = 0;
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u8 new_shift = 0;
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/* Save fan_min */
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mutex_lock(&data->update_lock);
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min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr]));
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data->fan_div[nr] = DIV_TO_REG(simple_strtoul(buf, NULL, 10));
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switch (nr) {
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case 0:
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keep_mask = 0xf8;
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new_shift = 0;
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break;
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case 1:
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keep_mask = 0x8f;
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new_shift = 4;
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break;
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}
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fan_div_reg = w83l786ng_read_value(client, W83L786NG_REG_FAN_DIV)
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& keep_mask;
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tmp_fan_div = (data->fan_div[nr] << new_shift) & ~keep_mask;
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w83l786ng_write_value(client, W83L786NG_REG_FAN_DIV,
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fan_div_reg | tmp_fan_div);
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/* Restore fan_min */
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data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
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w83l786ng_write_value(client, W83L786NG_REG_FAN_MIN(nr),
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data->fan_min[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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static struct sensor_device_attribute sda_fan_input[] = {
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SENSOR_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0),
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SENSOR_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1),
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};
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static struct sensor_device_attribute sda_fan_min[] = {
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SENSOR_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan_min,
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store_fan_min, 0),
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SENSOR_ATTR(fan2_min, S_IWUSR | S_IRUGO, show_fan_min,
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store_fan_min, 1),
|
||||
};
|
||||
|
||||
static struct sensor_device_attribute sda_fan_div[] = {
|
||||
SENSOR_ATTR(fan1_div, S_IWUSR | S_IRUGO, show_fan_div,
|
||||
store_fan_div, 0),
|
||||
SENSOR_ATTR(fan2_div, S_IWUSR | S_IRUGO, show_fan_div,
|
||||
store_fan_div, 1),
|
||||
};
|
||||
|
||||
|
||||
/* read/write the temperature, includes measured value and limits */
|
||||
|
||||
static ssize_t
|
||||
show_temp(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct sensor_device_attribute_2 *sensor_attr =
|
||||
to_sensor_dev_attr_2(attr);
|
||||
int nr = sensor_attr->nr;
|
||||
int index = sensor_attr->index;
|
||||
struct w83l786ng_data *data = w83l786ng_update_device(dev);
|
||||
return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index]));
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
store_temp(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct sensor_device_attribute_2 *sensor_attr =
|
||||
to_sensor_dev_attr_2(attr);
|
||||
int nr = sensor_attr->nr;
|
||||
int index = sensor_attr->index;
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct w83l786ng_data *data = i2c_get_clientdata(client);
|
||||
s32 val;
|
||||
|
||||
val = simple_strtol(buf, NULL, 10);
|
||||
mutex_lock(&data->update_lock);
|
||||
data->temp[nr][index] = TEMP_TO_REG(val);
|
||||
w83l786ng_write_value(client, W83L786NG_REG_TEMP[nr][index],
|
||||
data->temp[nr][index]);
|
||||
mutex_unlock(&data->update_lock);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static struct sensor_device_attribute_2 sda_temp_input[] = {
|
||||
SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0),
|
||||
SENSOR_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0),
|
||||
};
|
||||
|
||||
static struct sensor_device_attribute_2 sda_temp_max[] = {
|
||||
SENSOR_ATTR_2(temp1_max, S_IRUGO | S_IWUSR,
|
||||
show_temp, store_temp, 0, 1),
|
||||
SENSOR_ATTR_2(temp2_max, S_IRUGO | S_IWUSR,
|
||||
show_temp, store_temp, 1, 1),
|
||||
};
|
||||
|
||||
static struct sensor_device_attribute_2 sda_temp_max_hyst[] = {
|
||||
SENSOR_ATTR_2(temp1_max_hyst, S_IRUGO | S_IWUSR,
|
||||
show_temp, store_temp, 0, 2),
|
||||
SENSOR_ATTR_2(temp2_max_hyst, S_IRUGO | S_IWUSR,
|
||||
show_temp, store_temp, 1, 2),
|
||||
};
|
||||
|
||||
#define show_pwm_reg(reg) \
|
||||
static ssize_t show_##reg (struct device *dev, struct device_attribute *attr, \
|
||||
char *buf) \
|
||||
{ \
|
||||
struct w83l786ng_data *data = w83l786ng_update_device(dev); \
|
||||
int nr = to_sensor_dev_attr(attr)->index; \
|
||||
return sprintf(buf, "%d\n", data->reg[nr]); \
|
||||
}
|
||||
|
||||
show_pwm_reg(pwm_mode)
|
||||
show_pwm_reg(pwm_enable)
|
||||
show_pwm_reg(pwm)
|
||||
|
||||
static ssize_t
|
||||
store_pwm_mode(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
int nr = to_sensor_dev_attr(attr)->index;
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct w83l786ng_data *data = i2c_get_clientdata(client);
|
||||
u32 val = simple_strtoul(buf, NULL, 10);
|
||||
u8 reg;
|
||||
|
||||
if (val > 1)
|
||||
return -EINVAL;
|
||||
mutex_lock(&data->update_lock);
|
||||
data->pwm_mode[nr] = val;
|
||||
reg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
|
||||
reg &= ~(1 << W83L786NG_PWM_MODE_SHIFT[nr]);
|
||||
if (!val)
|
||||
reg |= 1 << W83L786NG_PWM_MODE_SHIFT[nr];
|
||||
w83l786ng_write_value(client, W83L786NG_REG_FAN_CFG, reg);
|
||||
mutex_unlock(&data->update_lock);
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
store_pwm(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
int nr = to_sensor_dev_attr(attr)->index;
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct w83l786ng_data *data = i2c_get_clientdata(client);
|
||||
u32 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 255);
|
||||
|
||||
mutex_lock(&data->update_lock);
|
||||
data->pwm[nr] = val;
|
||||
w83l786ng_write_value(client, W83L786NG_REG_PWM[nr], val);
|
||||
mutex_unlock(&data->update_lock);
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
store_pwm_enable(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
int nr = to_sensor_dev_attr(attr)->index;
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct w83l786ng_data *data = i2c_get_clientdata(client);
|
||||
u32 val = simple_strtoul(buf, NULL, 10);
|
||||
|
||||
u8 reg;
|
||||
|
||||
if (!val || (val > 2)) /* only modes 1 and 2 are supported */
|
||||
return -EINVAL;
|
||||
|
||||
mutex_lock(&data->update_lock);
|
||||
reg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
|
||||
data->pwm_enable[nr] = val;
|
||||
reg &= ~(0x02 << W83L786NG_PWM_ENABLE_SHIFT[nr]);
|
||||
reg |= (val - 1) << W83L786NG_PWM_ENABLE_SHIFT[nr];
|
||||
w83l786ng_write_value(client, W83L786NG_REG_FAN_CFG, reg);
|
||||
mutex_unlock(&data->update_lock);
|
||||
return count;
|
||||
}
|
||||
|
||||
static struct sensor_device_attribute sda_pwm[] = {
|
||||
SENSOR_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 0),
|
||||
SENSOR_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, store_pwm, 1),
|
||||
};
|
||||
|
||||
static struct sensor_device_attribute sda_pwm_mode[] = {
|
||||
SENSOR_ATTR(pwm1_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
|
||||
store_pwm_mode, 0),
|
||||
SENSOR_ATTR(pwm2_mode, S_IWUSR | S_IRUGO, show_pwm_mode,
|
||||
store_pwm_mode, 1),
|
||||
};
|
||||
|
||||
static struct sensor_device_attribute sda_pwm_enable[] = {
|
||||
SENSOR_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
|
||||
store_pwm_enable, 0),
|
||||
SENSOR_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, show_pwm_enable,
|
||||
store_pwm_enable, 1),
|
||||
};
|
||||
|
||||
/* For Smart Fan I/Thermal Cruise and Smart Fan II */
|
||||
static ssize_t
|
||||
show_tolerance(struct device *dev, struct device_attribute *attr, char *buf)
|
||||
{
|
||||
int nr = to_sensor_dev_attr(attr)->index;
|
||||
struct w83l786ng_data *data = w83l786ng_update_device(dev);
|
||||
return sprintf(buf, "%ld\n", (long)data->tolerance[nr]);
|
||||
}
|
||||
|
||||
static ssize_t
|
||||
store_tolerance(struct device *dev, struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
int nr = to_sensor_dev_attr(attr)->index;
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct w83l786ng_data *data = i2c_get_clientdata(client);
|
||||
u32 val;
|
||||
u8 tol_tmp, tol_mask;
|
||||
|
||||
val = simple_strtoul(buf, NULL, 10);
|
||||
|
||||
mutex_lock(&data->update_lock);
|
||||
tol_mask = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_TOLERANCE) & ((nr == 1) ? 0x0f : 0xf0);
|
||||
tol_tmp = SENSORS_LIMIT(val, 0, 15);
|
||||
tol_tmp &= 0x0f;
|
||||
data->tolerance[nr] = tol_tmp;
|
||||
if (nr == 1) {
|
||||
tol_tmp <<= 4;
|
||||
}
|
||||
|
||||
w83l786ng_write_value(client, W83L786NG_REG_TOLERANCE,
|
||||
tol_mask | tol_tmp);
|
||||
mutex_unlock(&data->update_lock);
|
||||
return count;
|
||||
}
|
||||
|
||||
static struct sensor_device_attribute sda_tolerance[] = {
|
||||
SENSOR_ATTR(pwm1_tolerance, S_IWUSR | S_IRUGO,
|
||||
show_tolerance, store_tolerance, 0),
|
||||
SENSOR_ATTR(pwm2_tolerance, S_IWUSR | S_IRUGO,
|
||||
show_tolerance, store_tolerance, 1),
|
||||
};
|
||||
|
||||
|
||||
#define IN_UNIT_ATTRS(X) \
|
||||
&sda_in_input[X].dev_attr.attr, \
|
||||
&sda_in_min[X].dev_attr.attr, \
|
||||
&sda_in_max[X].dev_attr.attr
|
||||
|
||||
#define FAN_UNIT_ATTRS(X) \
|
||||
&sda_fan_input[X].dev_attr.attr, \
|
||||
&sda_fan_min[X].dev_attr.attr, \
|
||||
&sda_fan_div[X].dev_attr.attr
|
||||
|
||||
#define TEMP_UNIT_ATTRS(X) \
|
||||
&sda_temp_input[X].dev_attr.attr, \
|
||||
&sda_temp_max[X].dev_attr.attr, \
|
||||
&sda_temp_max_hyst[X].dev_attr.attr
|
||||
|
||||
#define PWM_UNIT_ATTRS(X) \
|
||||
&sda_pwm[X].dev_attr.attr, \
|
||||
&sda_pwm_mode[X].dev_attr.attr, \
|
||||
&sda_pwm_enable[X].dev_attr.attr
|
||||
|
||||
#define TOLERANCE_UNIT_ATTRS(X) \
|
||||
&sda_tolerance[X].dev_attr.attr
|
||||
|
||||
static struct attribute *w83l786ng_attributes[] = {
|
||||
IN_UNIT_ATTRS(0),
|
||||
IN_UNIT_ATTRS(1),
|
||||
IN_UNIT_ATTRS(2),
|
||||
FAN_UNIT_ATTRS(0),
|
||||
FAN_UNIT_ATTRS(1),
|
||||
TEMP_UNIT_ATTRS(0),
|
||||
TEMP_UNIT_ATTRS(1),
|
||||
PWM_UNIT_ATTRS(0),
|
||||
PWM_UNIT_ATTRS(1),
|
||||
TOLERANCE_UNIT_ATTRS(0),
|
||||
TOLERANCE_UNIT_ATTRS(1),
|
||||
NULL
|
||||
};
|
||||
|
||||
static const struct attribute_group w83l786ng_group = {
|
||||
.attrs = w83l786ng_attributes,
|
||||
};
|
||||
|
||||
static int
|
||||
w83l786ng_attach_adapter(struct i2c_adapter *adapter)
|
||||
{
|
||||
if (!(adapter->class & I2C_CLASS_HWMON))
|
||||
return 0;
|
||||
return i2c_probe(adapter, &addr_data, w83l786ng_detect);
|
||||
}
|
||||
|
||||
static int
|
||||
w83l786ng_detect(struct i2c_adapter *adapter, int address, int kind)
|
||||
{
|
||||
struct i2c_client *client;
|
||||
struct device *dev;
|
||||
struct w83l786ng_data *data;
|
||||
int i, err = 0;
|
||||
u8 reg_tmp;
|
||||
|
||||
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
|
||||
goto exit;
|
||||
}
|
||||
|
||||
/* OK. For now, we presume we have a valid client. We now create the
|
||||
client structure, even though we cannot fill it completely yet.
|
||||
But it allows us to access w83l786ng_{read,write}_value. */
|
||||
|
||||
if (!(data = kzalloc(sizeof(struct w83l786ng_data), GFP_KERNEL))) {
|
||||
err = -ENOMEM;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
client = &data->client;
|
||||
dev = &client->dev;
|
||||
i2c_set_clientdata(client, data);
|
||||
client->addr = address;
|
||||
client->adapter = adapter;
|
||||
client->driver = &w83l786ng_driver;
|
||||
|
||||
/*
|
||||
* Now we do the remaining detection. A negative kind means that
|
||||
* the driver was loaded with no force parameter (default), so we
|
||||
* must both detect and identify the chip (actually there is only
|
||||
* one possible kind of chip for now, W83L786NG). A zero kind means
|
||||
* that the driver was loaded with the force parameter, the detection
|
||||
* step shall be skipped. A positive kind means that the driver
|
||||
* was loaded with the force parameter and a given kind of chip is
|
||||
* requested, so both the detection and the identification steps
|
||||
* are skipped.
|
||||
*/
|
||||
if (kind < 0) { /* detection */
|
||||
if (((w83l786ng_read_value(client,
|
||||
W83L786NG_REG_CONFIG) & 0x80) != 0x00)) {
|
||||
dev_dbg(&adapter->dev,
|
||||
"W83L786NG detection failed at 0x%02x.\n",
|
||||
address);
|
||||
goto exit_free;
|
||||
}
|
||||
}
|
||||
|
||||
if (kind <= 0) { /* identification */
|
||||
u16 man_id;
|
||||
u8 chip_id;
|
||||
|
||||
man_id = (w83l786ng_read_value(client,
|
||||
W83L786NG_REG_MAN_ID1) << 8) +
|
||||
w83l786ng_read_value(client, W83L786NG_REG_MAN_ID2);
|
||||
chip_id = w83l786ng_read_value(client, W83L786NG_REG_CHIP_ID);
|
||||
|
||||
if (man_id == 0x5CA3) { /* Winbond */
|
||||
if (chip_id == 0x80) { /* W83L786NG */
|
||||
kind = w83l786ng;
|
||||
}
|
||||
}
|
||||
|
||||
if (kind <= 0) { /* identification failed */
|
||||
dev_info(&adapter->dev,
|
||||
"Unsupported chip (man_id=0x%04X, "
|
||||
"chip_id=0x%02X).\n", man_id, chip_id);
|
||||
goto exit_free;
|
||||
}
|
||||
}
|
||||
|
||||
/* Fill in the remaining client fields and put into the global list */
|
||||
strlcpy(client->name, "w83l786ng", I2C_NAME_SIZE);
|
||||
mutex_init(&data->update_lock);
|
||||
|
||||
/* Tell the I2C layer a new client has arrived */
|
||||
if ((err = i2c_attach_client(client)))
|
||||
goto exit_free;
|
||||
|
||||
/* Initialize the chip */
|
||||
w83l786ng_init_client(client);
|
||||
|
||||
/* A few vars need to be filled upon startup */
|
||||
for (i = 0; i < 2; i++) {
|
||||
data->fan_min[i] = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_FAN_MIN(i));
|
||||
}
|
||||
|
||||
/* Update the fan divisor */
|
||||
reg_tmp = w83l786ng_read_value(client, W83L786NG_REG_FAN_DIV);
|
||||
data->fan_div[0] = reg_tmp & 0x07;
|
||||
data->fan_div[1] = (reg_tmp >> 4) & 0x07;
|
||||
|
||||
/* Register sysfs hooks */
|
||||
if ((err = sysfs_create_group(&client->dev.kobj, &w83l786ng_group)))
|
||||
goto exit_remove;
|
||||
|
||||
data->hwmon_dev = hwmon_device_register(dev);
|
||||
if (IS_ERR(data->hwmon_dev)) {
|
||||
err = PTR_ERR(data->hwmon_dev);
|
||||
goto exit_remove;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
/* Unregister sysfs hooks */
|
||||
|
||||
exit_remove:
|
||||
sysfs_remove_group(&client->dev.kobj, &w83l786ng_group);
|
||||
i2c_detach_client(client);
|
||||
exit_free:
|
||||
kfree(data);
|
||||
exit:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int
|
||||
w83l786ng_detach_client(struct i2c_client *client)
|
||||
{
|
||||
struct w83l786ng_data *data = i2c_get_clientdata(client);
|
||||
int err;
|
||||
|
||||
hwmon_device_unregister(data->hwmon_dev);
|
||||
sysfs_remove_group(&client->dev.kobj, &w83l786ng_group);
|
||||
|
||||
if ((err = i2c_detach_client(client)))
|
||||
return err;
|
||||
|
||||
kfree(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
w83l786ng_init_client(struct i2c_client *client)
|
||||
{
|
||||
u8 tmp;
|
||||
|
||||
if (reset)
|
||||
w83l786ng_write_value(client, W83L786NG_REG_CONFIG, 0x80);
|
||||
|
||||
/* Start monitoring */
|
||||
tmp = w83l786ng_read_value(client, W83L786NG_REG_CONFIG);
|
||||
if (!(tmp & 0x01))
|
||||
w83l786ng_write_value(client, W83L786NG_REG_CONFIG, tmp | 0x01);
|
||||
}
|
||||
|
||||
static struct w83l786ng_data *w83l786ng_update_device(struct device *dev)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct w83l786ng_data *data = i2c_get_clientdata(client);
|
||||
int i, j;
|
||||
u8 reg_tmp, pwmcfg;
|
||||
|
||||
mutex_lock(&data->update_lock);
|
||||
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|
||||
|| !data->valid) {
|
||||
dev_dbg(&client->dev, "Updating w83l786ng data.\n");
|
||||
|
||||
/* Update the voltages measured value and limits */
|
||||
for (i = 0; i < 3; i++) {
|
||||
data->in[i] = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_IN(i));
|
||||
data->in_min[i] = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_IN_MIN(i));
|
||||
data->in_max[i] = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_IN_MAX(i));
|
||||
}
|
||||
|
||||
/* Update the fan counts and limits */
|
||||
for (i = 0; i < 2; i++) {
|
||||
data->fan[i] = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_FAN(i));
|
||||
data->fan_min[i] = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_FAN_MIN(i));
|
||||
}
|
||||
|
||||
/* Update the fan divisor */
|
||||
reg_tmp = w83l786ng_read_value(client, W83L786NG_REG_FAN_DIV);
|
||||
data->fan_div[0] = reg_tmp & 0x07;
|
||||
data->fan_div[1] = (reg_tmp >> 4) & 0x07;
|
||||
|
||||
pwmcfg = w83l786ng_read_value(client, W83L786NG_REG_FAN_CFG);
|
||||
for (i = 0; i < 2; i++) {
|
||||
data->pwm_mode[i] =
|
||||
((pwmcfg >> W83L786NG_PWM_MODE_SHIFT[i]) & 1)
|
||||
? 0 : 1;
|
||||
data->pwm_enable[i] =
|
||||
((pwmcfg >> W83L786NG_PWM_ENABLE_SHIFT[i]) & 2) + 1;
|
||||
data->pwm[i] = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_PWM[i]);
|
||||
}
|
||||
|
||||
|
||||
/* Update the temperature sensors */
|
||||
for (i = 0; i < 2; i++) {
|
||||
for (j = 0; j < 3; j++) {
|
||||
data->temp[i][j] = w83l786ng_read_value(client,
|
||||
W83L786NG_REG_TEMP[i][j]);
|
||||
}
|
||||
}
|
||||
|
||||
/* Update Smart Fan I/II tolerance */
|
||||
reg_tmp = w83l786ng_read_value(client, W83L786NG_REG_TOLERANCE);
|
||||
data->tolerance[0] = reg_tmp & 0x0f;
|
||||
data->tolerance[1] = (reg_tmp >> 4) & 0x0f;
|
||||
|
||||
data->last_updated = jiffies;
|
||||
data->valid = 1;
|
||||
|
||||
}
|
||||
|
||||
mutex_unlock(&data->update_lock);
|
||||
|
||||
return data;
|
||||
}
|
||||
|
||||
static int __init
|
||||
sensors_w83l786ng_init(void)
|
||||
{
|
||||
return i2c_add_driver(&w83l786ng_driver);
|
||||
}
|
||||
|
||||
static void __exit
|
||||
sensors_w83l786ng_exit(void)
|
||||
{
|
||||
i2c_del_driver(&w83l786ng_driver);
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Kevin Lo");
|
||||
MODULE_DESCRIPTION("w83l786ng driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
module_init(sensors_w83l786ng_init);
|
||||
module_exit(sensors_w83l786ng_exit);
|
||||
Loading…
Reference in New Issue
Block a user