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lm-sensors/kernel/chips/adm1026.c
T
Jean Delvare 239b3d0344 Backport memory allocation reworking from Linux 2.6. 
git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2445 7894878c-1315-0410-8ee3-d5d059ff63e0
2004-04-17 17:20:01 +00:00

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/*
adm1026.c - Part of lm_sensors, Linux kernel modules for hardware
monitoring
Copyright (c) 2002, 2003 Philip Pokorny <ppokorny@penguincomputing.com>
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.
CHANGELOG
2003-03-13 Initial development
2003-05-07 First Release. Includes GPIO fixup and full
functionality.
2003-05-18 Minor fixups and tweaks.
Print GPIO config after fixup.
Adjust fan MIN if DIV changes.
2003-05-21 Fix printing of FAN/GPIO config
Fix silly bug in fan_div logic
Fix fan_min handling so that 0xff is 0 is 0xff
2003-05-25 Fix more silly typos...
2003-06-11 Change FAN_xx_REG macros to use different scaling
Most (all?) drivers assume two pulses per rev fans
and the old scaling was producing double the RPM's
Thanks to Jerome Hsiao @ Arima for pointing this out.
2004-01-27 Remove use of temporary ID.
Define addresses as a range.
*/
#include <linux/version.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/i2c-proc.h>
#include <linux/init.h>
#include "version.h"
#include "sensors_vid.h"
#ifndef I2C_DRIVERID_ADM1026
#define I2C_DRIVERID_ADM1026 1048
#endif
/* Addresses to scan */
static unsigned short normal_i2c[] = { SENSORS_I2C_END };
static unsigned short normal_i2c_range[] = { 0x2c, 0x2e, SENSORS_I2C_END };
static unsigned int normal_isa[] = { SENSORS_ISA_END };
static unsigned int normal_isa_range[] = { SENSORS_ISA_END };
/* Insmod parameters */
SENSORS_INSMOD_1(adm1026);
static int gpio_input[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_output[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_inverted[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_normal[17] = { -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1 };
static int gpio_fan[8] = { -1, -1, -1, -1, -1, -1, -1, -1 };
MODULE_PARM(gpio_input,"1-17i");
MODULE_PARM_DESC(gpio_input,"List of GPIO pins (0-16) to program as inputs");
MODULE_PARM(gpio_output,"1-17i");
MODULE_PARM_DESC(gpio_output,"List of GPIO pins (0-16) to program as outputs");
MODULE_PARM(gpio_inverted,"1-17i");
MODULE_PARM_DESC(gpio_inverted,"List of GPIO pins (0-16) to program as inverted");
MODULE_PARM(gpio_normal,"1-17i");
MODULE_PARM_DESC(gpio_normal,"List of GPIO pins (0-16) to program as normal/non-inverted");
MODULE_PARM(gpio_fan,"1-8i");
MODULE_PARM_DESC(gpio_fan,"List of GPIO pins (0-7) to program as fan tachs");
/* Many ADM1026 constants specified below */
/* The ADM1026 registers */
#define ADM1026_REG_CONFIG1 (0x00)
#define CFG1_MONITOR (0x01)
#define CFG1_INT_ENABLE (0x02)
#define CFG1_INT_CLEAR (0x04)
#define CFG1_AIN8_9 (0x08)
#define CFG1_THERM_HOT (0x10)
#define CFG1_DAC_AFC (0x20)
#define CFG1_PWM_AFC (0x40)
#define CFG1_RESET (0x80)
#define ADM1026_REG_CONFIG2 (0x01)
/* CONFIG2 controls FAN0/GPIO0 through FAN7/GPIO7 */
#define ADM1026_REG_CONFIG3 (0x07)
#define CFG3_GPIO16_ENABLE (0x01)
#define CFG3_CI_CLEAR (0x02)
#define CFG3_VREF_250 (0x04)
#define CFG3_GPIO16_DIR (0x40)
#define CFG3_GPIO16_POL (0x80)
#define ADM1026_REG_E2CONFIG (0x13)
#define E2CFG_READ (0x01)
#define E2CFG_WRITE (0x02)
#define E2CFG_ERASE (0x04)
#define E2CFG_ROM (0x08)
#define E2CFG_CLK_EXT (0x80)
/* There are 10 general analog inputs and 7 dedicated inputs
* They are:
* 0 - 9 = AIN0 - AIN9
* 10 = Vbat
* 11 = 3.3V Standby
* 12 = 3.3V Main
* 13 = +5V
* 14 = Vccp (CPU core voltage)
* 15 = +12V
* 16 = -12V
*/
static u16 REG_IN[] = {
0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
0x36, 0x37, 0x27, 0x29, 0x26, 0x2a,
0x2b, 0x2c, 0x2d, 0x2e, 0x2f
};
static u16 REG_IN_MIN[] = {
0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d,
0x5e, 0x5f, 0x6d, 0x49, 0x6b, 0x4a,
0x4b, 0x4c, 0x4d, 0x4e, 0x4f
};
static u16 REG_IN_MAX[] = {
0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
0x56, 0x57, 0x6c, 0x41, 0x6a, 0x42,
0x43, 0x44, 0x45, 0x46, 0x47
};
#define ADM1026_REG_IN(nr) (REG_IN[(nr)])
#define ADM1026_REG_IN_MIN(nr) (REG_IN_MIN[(nr)])
#define ADM1026_REG_IN_MAX(nr) (REG_IN_MAX[(nr)])
/* Temperatures are:
* 0 - Internal
* 1 - External 1
* 2 - External 2
*/
static u16 REG_TEMP[] = { 0x1f, 0x28, 0x29 };
static u16 REG_TEMP_MIN[] = { 0x69, 0x48, 0x49 };
static u16 REG_TEMP_MAX[] = { 0x68, 0x40, 0x41 };
static u16 REG_TEMP_TMIN[] = { 0x10, 0x11, 0x12 };
static u16 REG_TEMP_THERM[] = { 0x0d, 0x0e, 0x0f };
static u16 REG_TEMP_OFFSET[] = { 0x1e, 0x6e, 0x6f };
#define ADM1026_REG_TEMP(nr) (REG_TEMP[(nr)])
#define ADM1026_REG_TEMP_MIN(nr) (REG_TEMP_MIN[(nr)])
#define ADM1026_REG_TEMP_MAX(nr) (REG_TEMP_MAX[(nr)])
#define ADM1026_REG_TEMP_TMIN(nr) (REG_TEMP_TMIN[(nr)])
#define ADM1026_REG_TEMP_THERM(nr) (REG_TEMP_THERM[(nr)])
#define ADM1026_REG_TEMP_OFFSET(nr) (REG_TEMP_OFFSET[(nr)])
#define ADM1026_REG_FAN(nr) (0x38 + (nr))
#define ADM1026_REG_FAN_MIN(nr) (0x60 + (nr))
#define ADM1026_REG_FAN_DIV_0_3 (0x02)
#define ADM1026_REG_FAN_DIV_4_7 (0x03)
#define ADM1026_REG_DAC (0x04)
#define ADM1026_REG_PWM (0x05)
#define ADM1026_REG_GPIO_CFG_0_3 (0x08)
#define ADM1026_REG_GPIO_CFG_4_7 (0x09)
#define ADM1026_REG_GPIO_CFG_8_11 (0x0a)
#define ADM1026_REG_GPIO_CFG_12_15 (0x0b)
/* CFG_16 in REG_CFG3 */
#define ADM1026_REG_GPIO_STATUS_0_7 (0x24)
#define ADM1026_REG_GPIO_STATUS_8_15 (0x25)
/* STATUS_16 in REG_STATUS4 */
#define ADM1026_REG_GPIO_MASK_0_7 (0x1c)
#define ADM1026_REG_GPIO_MASK_8_15 (0x1d)
/* MASK_16 in REG_MASK4 */
#define ADM1026_REG_COMPANY 0x16
#define ADM1026_REG_VERSTEP 0x17
/* These are the recognized values for the above regs */
#define ADM1026_COMPANY_ANALOG_DEV 0x41
#define ADM1026_VERSTEP_GENERIC 0x40
#define ADM1026_VERSTEP_ADM1026 0x44
#define ADM1026_REG_MASK1 0x18
#define ADM1026_REG_MASK2 0x19
#define ADM1026_REG_MASK3 0x1a
#define ADM1026_REG_MASK4 0x1b
#define ADM1026_REG_STATUS1 0x20
#define ADM1026_REG_STATUS2 0x21
#define ADM1026_REG_STATUS3 0x22
#define ADM1026_REG_STATUS4 0x23
/* Conversions. Rounding and limit checking is only done on the TO_REG
variants. Note that you should be a bit careful with which arguments
these macros are called: arguments may be evaluated more than once.
*/
/* IN are scaled acording to built-in resistors. These are the
* voltages corresponding to 3/4 of full scale (192 or 0xc0)
* NOTE: The -12V input needs an additional factor to account
* for the Vref pullup resistor.
* NEG12_OFFSET = SCALE * Vref / V-192 - Vref
* = 13875 * 2.50 / 1.875 - 2500
* = 16000
*/
#if 1
/* The values in this table are based on Table II, page 15 of the
* datasheet.
*/
static int adm1026_scaling[] = { /* .001 Volts */
2250, 2250, 2250, 2250, 2250, 2250,
1875, 1875, 1875, 1875, 3000, 3330,
3330, 4995, 2250, 12000, 13875
};
#define NEG12_OFFSET 16000
#else
/* The values in this table are based on the resistors in
* Figure 5 on page 16. But the 3.3V inputs are not in
* the figure and the values for the 5V input are wrong.
* For 5V, I'm guessing that R2 at 55.2k is right, but
* the total resistance should be 1400 or 1449 like the
* other inputs. Using 1449, gives 4.922V at 192.
*/
static int adm1026_scaling[] = { /* .001 Volts */
2249, 2249, 2249, 2249, 2249, 2249,
1875, 1875, 1875, 1875, 3329, 3329,
3329, 4922, 2249, 11969, 13889
};
#define NEG12_OFFSET 16019
#endif
#define SCALE(val,from,to) (((val)*(to) + ((from)/2))/(from))
#define INS_TO_REG(n,val) (SENSORS_LIMIT(SCALE(val,adm1026_scaling[n],192),0,255))
#if 0 /* If we have extended A/D bits */
#define INSEXT_FROM_REG(n,val,ext) (SCALE((val)*4 + (ext),192*4,adm1026_scaling[n]))
#define INS_FROM_REG(n,val) (INSEXT_FROM_REG(n,val,0))
#else
#define INS_FROM_REG(n,val) (SCALE(val,192,adm1026_scaling[n]))
#endif
/* FAN speed is measured using 22.5kHz clock and counts for 2 pulses
* and we assume a 2 pulse-per-rev fan tach signal
* 22500 kHz * 60 (sec/min) * 2 (pulse) / 2 (pulse/rev) == 1350000
*/
#define FAN_TO_REG(val,div) ((val)<=0 ? 0xff : SENSORS_LIMIT(1350000/((val)*(div)),1,254))
#define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==0xff ? 0 : 1350000/((val)*(div)))
#define DIV_FROM_REG(val) (1<<(val))
#define DIV_TO_REG(val) ((val)>=8 ? 3 : (val)>=4 ? 2 : (val)>=2 ? 1 : 0)
/* Temperature is reported in 1 degC increments */
#define TEMP_TO_REG(val) (SENSORS_LIMIT(val,-127,127))
#define TEMP_FROM_REG(val) (val)
#define OFFSET_TO_REG(val) (SENSORS_LIMIT(val,-127,127))
#define OFFSET_FROM_REG(val) (val)
#define PWM_TO_REG(val) (SENSORS_LIMIT(val,0,255))
#define PWM_FROM_REG(val) (val)
/* Analog output is a voltage, but it's used like a PWM
* Seems like this should be scaled, but to be consistent
* with other drivers, we do it this way.
*/
#define DAC_TO_REG(val) (SENSORS_LIMIT(val,0,255))
#define DAC_FROM_REG(val) (val)
/* sensors_vid.h defines vid_from_reg() */
#define VID_FROM_REG(val,vrm) (vid_from_reg(val,vrm))
#define ALARMS_FROM_REG(val) (val)
/* Unlike some other drivers we DO NOT set initial limits. Use
* the config file to set limits.
*/
/* Typically used with systems using a v9.1 VRM spec ? */
#define ADM1026_INIT_VRM 91
#define ADM1026_INIT_VID -1
/* Chip sampling rates
*
* Some sensors are not updated more frequently than once per second
* so it doesn't make sense to read them more often than that.
* We cache the results and return the saved data if the driver
* is called again before a second has elapsed.
*
* Also, there is significant configuration data for this chip
* So, we keep the config data up to date in the cache
* when it is written and only sample it once every 5 *minutes*
*/
#define ADM1026_DATA_INTERVAL (1 * HZ)
#define ADM1026_CONFIG_INTERVAL (5 * 60 * HZ)
/* We allow for multiple chips in a single system.
*
* For each registered ADM1026, we need to keep state information
* at client->data. The adm1026_data structure is dynamically
* allocated, when a new client structure is allocated. */
struct adm1026_data {
struct i2c_client client;
struct semaphore lock;
int sysctl_id;
enum chips type;
struct semaphore update_lock;
int valid; /* !=0 if following fields are valid */
unsigned long last_reading; /* In jiffies */
unsigned long last_config; /* In jiffies */
u8 in[17]; /* Register value */
u8 in_max[17]; /* Register value */
u8 in_min[17]; /* Register value */
s8 temp[3]; /* Register value */
s8 temp_min[3]; /* Register value */
s8 temp_max[3]; /* Register value */
s8 temp_tmin[3]; /* Register value */
s8 temp_therm[3]; /* Register value */
s8 temp_offset[3]; /* Register value */
u8 fan[8]; /* Register value */
u8 fan_min[8]; /* Register value */
u8 fan_div[8]; /* Decoded value */
u8 pwm; /* Register value */
u8 analog_out; /* Register value */
int vid; /* Decoded value */
u8 vrm; /* VRM version */
long alarms; /* Register encoding, combined */
long alarm_mask; /* Register encoding, combined */
long gpio; /* Register encoding, combined */
long gpio_mask; /* Register encoding, combined */
u8 gpio_config[17]; /* Decoded value */
u8 config1; /* Register value */
u8 config2; /* Register value */
u8 config3; /* Register value */
};
static int adm1026_attach_adapter(struct i2c_adapter *adapter);
static int adm1026_detect(struct i2c_adapter *adapter, int address,
unsigned short flags, int kind);
static int adm1026_detach_client(struct i2c_client *client);
static int adm1026_read_value(struct i2c_client *client, u8 register);
static int adm1026_write_value(struct i2c_client *client, u8 register, int value);
static void adm1026_print_gpio(struct i2c_client *client);
static void adm1026_fixup_gpio(struct i2c_client *client);
static void adm1026_update_client(struct i2c_client *client);
static void adm1026_init_client(struct i2c_client *client);
static void adm1026_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void adm1026_in16(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results);
static void adm1026_fan(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_fixup_fan_min(struct i2c_client *client,
int fan, int old_div);
static void adm1026_fan_div(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_temp(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_temp_offset(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_temp_tmin(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_temp_therm(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_vid(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_vrm(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_alarms(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_alarm_mask(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_gpio(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_gpio_mask(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_pwm(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_analog_out(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static void adm1026_afc(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
static struct i2c_driver adm1026_driver = {
.owner = THIS_MODULE,
.name = "ADM1026 compatible sensor driver",
.id = I2C_DRIVERID_ADM1026,
.flags = I2C_DF_NOTIFY,
.attach_adapter = &adm1026_attach_adapter,
.detach_client = &adm1026_detach_client,
};
/* Unique ID assigned to each ADM1026 detected */
static int adm1026_id = 0;
/* -- SENSORS SYSCTL START -- */
#define ADM1026_SYSCTL_FAN0 1000
#define ADM1026_SYSCTL_FAN1 1001
#define ADM1026_SYSCTL_FAN2 1002
#define ADM1026_SYSCTL_FAN3 1003
#define ADM1026_SYSCTL_FAN4 1004
#define ADM1026_SYSCTL_FAN5 1005
#define ADM1026_SYSCTL_FAN6 1006
#define ADM1026_SYSCTL_FAN7 1007
#define ADM1026_SYSCTL_FAN_DIV 1008
#define ADM1026_SYSCTL_GPIO 1009
#define ADM1026_SYSCTL_GPIO_MASK 1010
#define ADM1026_SYSCTL_ALARMS 1011
#define ADM1026_SYSCTL_ALARM_MASK 1012
#define ADM1026_SYSCTL_IN0 1013
#define ADM1026_SYSCTL_IN1 1014
#define ADM1026_SYSCTL_IN2 1015
#define ADM1026_SYSCTL_IN3 1016
#define ADM1026_SYSCTL_IN4 1017
#define ADM1026_SYSCTL_IN5 1018
#define ADM1026_SYSCTL_IN6 1019
#define ADM1026_SYSCTL_IN7 1020
#define ADM1026_SYSCTL_IN8 1021
#define ADM1026_SYSCTL_IN9 1022
#define ADM1026_SYSCTL_IN10 1023
#define ADM1026_SYSCTL_IN11 1024
#define ADM1026_SYSCTL_IN12 1025
#define ADM1026_SYSCTL_IN13 1026
#define ADM1026_SYSCTL_IN14 1027
#define ADM1026_SYSCTL_IN15 1028
#define ADM1026_SYSCTL_IN16 1029
#define ADM1026_SYSCTL_PWM 1030
#define ADM1026_SYSCTL_ANALOG_OUT 1031
#define ADM1026_SYSCTL_AFC 1032
#define ADM1026_SYSCTL_TEMP1 1033
#define ADM1026_SYSCTL_TEMP2 1034
#define ADM1026_SYSCTL_TEMP3 1035
#define ADM1026_SYSCTL_TEMP_OFFSET1 1036
#define ADM1026_SYSCTL_TEMP_OFFSET2 1037
#define ADM1026_SYSCTL_TEMP_OFFSET3 1038
#define ADM1026_SYSCTL_TEMP_THERM1 1039
#define ADM1026_SYSCTL_TEMP_THERM2 1040
#define ADM1026_SYSCTL_TEMP_THERM3 1041
#define ADM1026_SYSCTL_TEMP_TMIN1 1042
#define ADM1026_SYSCTL_TEMP_TMIN2 1043
#define ADM1026_SYSCTL_TEMP_TMIN3 1044
#define ADM1026_SYSCTL_VID 1045
#define ADM1026_SYSCTL_VRM 1046
#define ADM1026_ALARM_TEMP2 (1L << 0)
#define ADM1026_ALARM_TEMP3 (1L << 1)
#define ADM1026_ALARM_IN9 (1L << 1)
#define ADM1026_ALARM_IN11 (1L << 2)
#define ADM1026_ALARM_IN12 (1L << 3)
#define ADM1026_ALARM_IN13 (1L << 4)
#define ADM1026_ALARM_IN14 (1L << 5)
#define ADM1026_ALARM_IN15 (1L << 6)
#define ADM1026_ALARM_IN16 (1L << 7)
#define ADM1026_ALARM_IN0 (1L << 8)
#define ADM1026_ALARM_IN1 (1L << 9)
#define ADM1026_ALARM_IN2 (1L << 10)
#define ADM1026_ALARM_IN3 (1L << 11)
#define ADM1026_ALARM_IN4 (1L << 12)
#define ADM1026_ALARM_IN5 (1L << 13)
#define ADM1026_ALARM_IN6 (1L << 14)
#define ADM1026_ALARM_IN7 (1L << 15)
#define ADM1026_ALARM_FAN0 (1L << 16)
#define ADM1026_ALARM_FAN1 (1L << 17)
#define ADM1026_ALARM_FAN2 (1L << 18)
#define ADM1026_ALARM_FAN3 (1L << 19)
#define ADM1026_ALARM_FAN4 (1L << 20)
#define ADM1026_ALARM_FAN5 (1L << 21)
#define ADM1026_ALARM_FAN6 (1L << 22)
#define ADM1026_ALARM_FAN7 (1L << 23)
#define ADM1026_ALARM_TEMP1 (1L << 24)
#define ADM1026_ALARM_IN10 (1L << 25)
#define ADM1026_ALARM_IN8 (1L << 26)
#define ADM1026_ALARM_THERM (1L << 27)
#define ADM1026_ALARM_AFC_FAN (1L << 28)
#define ADM1026_ALARM_UNUSED (1L << 29)
#define ADM1026_ALARM_CI (1L << 30)
/* -- SENSORS SYSCTL END -- */
/* The /proc/sys entries */
/* These files are created for each detected ADM1026. This is just a template;
* The actual list is built from this and additional per-chip
* custom lists below. Note the XXX_LEN macros. These must be
* compile time constants because they will be used to allocate
* space for the final template passed to i2c_register_entry.
* We depend on the ability of GCC to evaluate expressions at
* compile time to turn these expressions into compile time
* constants, but this can generate a warning.
*/
static ctl_table adm1026_common[] = {
{ADM1026_SYSCTL_IN0, "in0", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN1, "in1", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN2, "in2", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN3, "in3", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN4, "in4", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN5, "in5", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN6, "in6", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN7, "in7", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN8, "in8", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN9, "in9", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN10, "in10", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN11, "in11", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN12, "in12", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN13, "in13", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN14, "in14", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN15, "in15", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in},
{ADM1026_SYSCTL_IN16, "in16", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_in16},
{ADM1026_SYSCTL_FAN0, "fan0", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_fan},
{ADM1026_SYSCTL_FAN1, "fan1", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_fan},
{ADM1026_SYSCTL_FAN2, "fan2", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_fan},
{ADM1026_SYSCTL_FAN3, "fan3", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_fan},
{ADM1026_SYSCTL_FAN4, "fan4", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_fan},
{ADM1026_SYSCTL_FAN5, "fan5", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_fan},
{ADM1026_SYSCTL_FAN6, "fan6", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_fan},
{ADM1026_SYSCTL_FAN7, "fan7", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_fan},
{ADM1026_SYSCTL_FAN_DIV, "fan_div", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_fan_div},
{ADM1026_SYSCTL_TEMP1, "temp1", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_temp},
{ADM1026_SYSCTL_TEMP2, "temp2", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_temp},
{ADM1026_SYSCTL_TEMP3, "temp3", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_temp},
{ADM1026_SYSCTL_TEMP_OFFSET1, "temp1_offset", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_offset},
{ADM1026_SYSCTL_TEMP_OFFSET2, "temp2_offset", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_offset},
{ADM1026_SYSCTL_TEMP_OFFSET3, "temp3_offset", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_offset},
{ADM1026_SYSCTL_TEMP_TMIN1, "temp1_tmin", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_tmin},
{ADM1026_SYSCTL_TEMP_TMIN2, "temp2_tmin", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_tmin},
{ADM1026_SYSCTL_TEMP_TMIN3, "temp3_tmin", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_tmin},
{ADM1026_SYSCTL_TEMP_THERM1, "temp1_therm", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_therm},
{ADM1026_SYSCTL_TEMP_THERM2, "temp2_therm", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_therm},
{ADM1026_SYSCTL_TEMP_THERM3, "temp3_therm", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_temp_therm},
{ADM1026_SYSCTL_VID, "vid", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_vid},
{ADM1026_SYSCTL_VRM, "vrm", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_vrm},
{ADM1026_SYSCTL_ALARMS, "alarms", NULL, 0, 0444, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_alarms},
{ADM1026_SYSCTL_ALARM_MASK, "alarm_mask", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_alarm_mask},
{ADM1026_SYSCTL_GPIO, "gpio", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_gpio},
{ADM1026_SYSCTL_GPIO_MASK, "gpio_mask", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_gpio_mask},
{ADM1026_SYSCTL_PWM, "pwm", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_pwm},
{ADM1026_SYSCTL_ANALOG_OUT, "analog_out", NULL, 0, 0644, NULL,
&i2c_proc_real, &i2c_sysctl_real, NULL, &adm1026_analog_out},
{ADM1026_SYSCTL_AFC, "afc", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &adm1026_afc},
{0}
};
#define CTLTBL_COMMON (sizeof(adm1026_common)/sizeof(adm1026_common[0]))
#define MAX2(a,b) ((a)>(b)?(a):(b))
#define MAX3(a,b,c) ((a)>(b)?MAX2((a),(c)):MAX2((b),(c)))
#define MAX4(a,b,c,d) ((a)>(b)?MAX3((a),(c),(d)):MAX3((b),(c),(d)))
#define CTLTBL_MAX (CTLTBL_COMMON)
/* This function is called when:
* the module is loaded
* a new adapter is loaded
*/
int adm1026_attach_adapter(struct i2c_adapter *adapter)
{
return i2c_detect(adapter, &addr_data, adm1026_detect);
}
/* This function is called by i2c_detect */
int adm1026_detect(struct i2c_adapter *adapter, int address,
unsigned short flags, int kind)
{
int i;
int company, verstep ;
struct i2c_client *new_client;
struct adm1026_data *data;
int err = 0;
const char *type_name = "";
struct ctl_table template[CTLTBL_MAX] ;
struct ctl_table * template_next = template ;
if (i2c_is_isa_adapter(adapter)) {
/* This chip has no ISA interface */
goto ERROR0 ;
}
if (!i2c_check_functionality(adapter,
I2C_FUNC_SMBUS_BYTE_DATA)) {
/* We need to be able to do byte I/O */
goto ERROR0 ;
}
/* 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 adm1026_{read,write}_value. */
if (!(data = kmalloc(sizeof(struct adm1026_data), GFP_KERNEL))) {
err = -ENOMEM;
goto ERROR0;
}
new_client = &data->client;
new_client->addr = address;
new_client->data = data;
new_client->adapter = adapter;
new_client->driver = &adm1026_driver;
new_client->flags = 0;
/* Now, we do the remaining detection. */
company = adm1026_read_value(new_client, ADM1026_REG_COMPANY);
verstep = adm1026_read_value(new_client, ADM1026_REG_VERSTEP);
#ifdef DEBUG
printk("adm1026: Detecting device at %d,0x%02x with"
" COMPANY: 0x%02x and VERSTEP: 0x%02x\n",
i2c_adapter_id(new_client->adapter), new_client->addr,
company, verstep
);
#endif
/* If auto-detecting, Determine the chip type. */
if (kind <= 0) {
#ifdef DEBUG
printk("adm1026: Autodetecting device at %d,0x%02x ...\n",
i2c_adapter_id(adapter), address );
#endif
if( company == ADM1026_COMPANY_ANALOG_DEV
&& verstep == ADM1026_VERSTEP_ADM1026 ) {
kind = adm1026 ;
} else if( company == ADM1026_COMPANY_ANALOG_DEV
&& (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC ) {
printk("adm1026: Unrecgonized stepping 0x%02x"
" Defaulting to ADM1026.\n", verstep );
kind = adm1026 ;
} else if( (verstep & 0xf0) == ADM1026_VERSTEP_GENERIC ) {
printk("adm1026: Found version/stepping 0x%02x"
" Assuming generic ADM1026.\n", verstep );
kind = any_chip ;
} else {
#ifdef DEBUG
printk("adm1026: Autodetection failed\n");
#endif
/* Not an ADM1026 ... */
if( kind == 0 ) { /* User used force=x,y */
printk("adm1026: Generic ADM1026 Version 6 not"
" found at %d,0x%02x. Try force_adm1026.\n",
i2c_adapter_id(adapter), address );
}
err = 0 ;
goto ERROR1;
}
}
/* Fill in the chip specific driver values */
switch (kind) {
case any_chip :
type_name = "adm1026";
strcpy(new_client->name, "Generic ADM1026");
template_next = template ; /* None used */
break ;
case adm1026 :
type_name = "adm1026";
strcpy(new_client->name, "Analog Devices ADM1026");
template_next = template ;
break ;
#if 0
/* Example of another adm1026 "compatible" device */
case adx1000 :
type_name = "adx1000";
strcpy(new_client->name, "Compatible ADX1000");
memcpy( template, adx_specific, sizeof(adx_specific) );
template_next = template + CTLTBL_ADX1000 ;
break ;
#endif
default :
printk("adm1026: Internal error, invalid kind (%d)!", kind);
err = -EFAULT ;
goto ERROR1;
}
/* Fill in the remaining client fields */
new_client->id = adm1026_id++;
printk("adm1026(%d): Assigning ID %d to %s at %d,0x%02x\n",
new_client->id, new_client->id, new_client->name,
i2c_adapter_id(new_client->adapter),
new_client->addr
);
/* Housekeeping values */
data->type = kind;
data->valid = 0;
/* Set the VRM version */
data->vrm = ADM1026_INIT_VRM ;
data->vid = ADM1026_INIT_VID ;
init_MUTEX(&data->update_lock);
/* Initialize the ADM1026 chip */
adm1026_init_client(new_client);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
goto ERROR1;
/* Finish out the template */
memcpy(template_next, adm1026_common, sizeof(adm1026_common));
/* Register a new directory entry with module sensors */
if ((i = i2c_register_entry(new_client,
type_name,
template)) < 0) {
err = i;
goto ERROR2;
}
data->sysctl_id = i;
return 0;
/* Error out and cleanup code */
ERROR2:
i2c_detach_client(new_client);
ERROR1:
kfree(data);
ERROR0:
return err;
}
int adm1026_detach_client(struct i2c_client *client)
{
int err;
int id ;
id = client->id;
i2c_deregister_entry(((struct adm1026_data *)(client->data))->sysctl_id);
if ((err = i2c_detach_client(client))) {
printk("adm1026(%d): Client deregistration failed,"
" client not detached.\n", id );
return err;
}
kfree(client->data);
return 0;
}
int adm1026_read_value(struct i2c_client *client, u8 reg)
{
int res;
if( reg < 0x80 ) {
/* "RAM" locations */
res = i2c_smbus_read_byte_data(client, reg) & 0xff ;
} else {
/* EEPROM, do nothing */
res = 0 ;
}
return res ;
}
int adm1026_write_value(struct i2c_client *client, u8 reg, int value)
{
int res ;
if( reg < 0x80 ) {
/* "RAM" locations */
res = i2c_smbus_write_byte_data(client, reg, value);
} else {
/* EEPROM, do nothing */
res = 0 ;
}
return res ;
}
/* Called when we have found a new ADM1026. */
void adm1026_init_client(struct i2c_client *client)
{
int value ;
int i;
struct adm1026_data *data = client->data;
#ifdef DEBUG
printk("adm1026(%d): Initializing device\n", client->id);
#endif
/* Read chip config */
data->config1 = adm1026_read_value(client, ADM1026_REG_CONFIG1);
data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
/* Inform user of chip config */
#ifdef DEBUG
printk("adm1026(%d): ADM1026_REG_CONFIG1 is: 0x%02x\n",
client->id, data->config1 );
#endif
if( (data->config1 & CFG1_MONITOR) == 0 ) {
printk("adm1026(%d): Monitoring not currently enabled.\n",
client->id );
}
if( data->config1 & CFG1_INT_ENABLE ) {
printk("adm1026(%d): SMBALERT interrupts are enabled.\n",
client->id );
}
if( data->config1 & CFG1_AIN8_9 ) {
printk("adm1026(%d): in8 and in9 enabled. temp3 disabled.\n",
client->id );
} else {
printk("adm1026(%d): temp3 enabled. in8 and in9 disabled.\n",
client->id );
}
if( data->config1 & CFG1_THERM_HOT ) {
printk("adm1026(%d): Automatic THERM, PWM, and temp limits enabled.\n",
client->id );
}
value = data->config3 ;
if( data->config3 & CFG3_GPIO16_ENABLE ) {
printk("adm1026(%d): GPIO16 enabled. THERM pin disabled.\n",
client->id );
} else {
printk("adm1026(%d): THERM pin enabled. GPIO16 disabled.\n",
client->id );
}
if( data->config3 & CFG3_VREF_250 ) {
printk("adm1026(%d): Vref is 2.50 Volts.\n", client->id );
} else {
printk("adm1026(%d): Vref is 1.82 Volts.\n", client->id );
}
/* Read and pick apart the existing GPIO configuration */
value = 0 ;
for( i = 0 ; i <= 15 ; ++i ) {
if( (i & 0x03) == 0 ) {
value = adm1026_read_value(client,
ADM1026_REG_GPIO_CFG_0_3 + i/4 );
}
data->gpio_config[i] = value & 0x03 ;
value >>= 2 ;
}
data->gpio_config[16] = (data->config3 >> 6) & 0x03 ;
/* ... and then print it */
adm1026_print_gpio(client);
/* If the user asks us to reprogram the GPIO config, then
* do it now. But only if this is the first ADM1026.
*/
if( client->id == 0
&& (gpio_input[0] != -1 || gpio_output[0] != -1
|| gpio_inverted[0] != -1 || gpio_normal[0] != -1
|| gpio_fan[0] != -1 ) ) {
adm1026_fixup_gpio(client);
}
/* WE INTENTIONALLY make no changes to the limits,
* offsets, pwms and fans. If they were
* configured, we don't want to mess with them.
* If they weren't, the default is generally safe
* and will suffice until 'sensors -s' can be run.
*/
/* Start monitoring */
value = adm1026_read_value(client, ADM1026_REG_CONFIG1);
/* Set MONITOR, clear interrupt acknowledge and s/w reset */
value = (value | CFG1_MONITOR) & (~CFG1_INT_CLEAR & ~CFG1_RESET) ;
#ifdef DEBUG
printk("adm1026(%d): Setting CONFIG to: 0x%02x\n", client->id, value );
#endif
data->config1 = value ;
adm1026_write_value(client, ADM1026_REG_CONFIG1, value);
}
void adm1026_print_gpio(struct i2c_client *client)
{
struct adm1026_data *data = client->data;
int i ;
printk("adm1026(%d): GPIO config is:\nadm1026(%d):",
client->id, client->id );
for( i = 0 ; i <= 7 ; ++i ) {
if( data->config2 & (1 << i) ) {
printk( " %sGP%s%d",
data->gpio_config[i] & 0x02 ? "" : "!",
data->gpio_config[i] & 0x01 ? "OUT" : "IN",
i );
} else {
printk( " FAN%d", i );
}
}
printk( "\nadm1026(%d):", client->id );
for( i = 8 ; i <= 15 ; ++i ) {
printk( " %sGP%s%d",
data->gpio_config[i] & 0x02 ? "" : "!",
data->gpio_config[i] & 0x01 ? "OUT" : "IN",
i );
}
if( data->config3 & CFG3_GPIO16_ENABLE ) {
printk( " %sGP%s16\n",
data->gpio_config[16] & 0x02 ? "" : "!",
data->gpio_config[16] & 0x01 ? "OUT" : "IN" );
} else {
/* GPIO16 is THERM */
printk( " THERM\n" );
}
}
void adm1026_fixup_gpio(struct i2c_client *client)
{
struct adm1026_data *data = client->data;
int i ;
int value ;
/* Make the changes requested. */
/* We may need to unlock/stop monitoring or soft-reset the
* chip before we can make changes. This hasn't been
* tested much. FIXME
*/
/* Make outputs */
for( i = 0 ; i <= 16 ; ++i ) {
if( gpio_output[i] >= 0 && gpio_output[i] <= 16 ) {
data->gpio_config[gpio_output[i]] |= 0x01 ;
}
/* if GPIO0-7 is output, it isn't a FAN tach */
if( gpio_output[i] >= 0 && gpio_output[i] <= 7 ) {
data->config2 |= 1 << gpio_output[i] ;
}
}
/* Input overrides output */
for( i = 0 ; i <= 16 ; ++i ) {
if( gpio_input[i] >= 0 && gpio_input[i] <= 16 ) {
data->gpio_config[gpio_input[i]] &= ~ 0x01 ;
}
/* if GPIO0-7 is input, it isn't a FAN tach */
if( gpio_input[i] >= 0 && gpio_input[i] <= 7 ) {
data->config2 |= 1 << gpio_input[i] ;
}
}
/* Inverted */
for( i = 0 ; i <= 16 ; ++i ) {
if( gpio_inverted[i] >= 0 && gpio_inverted[i] <= 16 ) {
data->gpio_config[gpio_inverted[i]] &= ~ 0x02 ;
}
}
/* Normal overrides inverted */
for( i = 0 ; i <= 16 ; ++i ) {
if( gpio_normal[i] >= 0 && gpio_normal[i] <= 16 ) {
data->gpio_config[gpio_normal[i]] |= 0x02 ;
}
}
/* Fan overrides input and output */
for( i = 0 ; i <= 7 ; ++i ) {
if( gpio_fan[i] >= 0 && gpio_fan[i] <= 7 ) {
data->config2 &= ~( 1 << gpio_fan[i] );
}
}
/* Write new configs to registers */
adm1026_write_value(client, ADM1026_REG_CONFIG2, data->config2);
data->config3 = (data->config3 & 0x3f)
| ((data->gpio_config[16] & 0x03) << 6) ;
adm1026_write_value(client, ADM1026_REG_CONFIG3, data->config3);
for( i = 15, value = 0 ; i >= 0 ; --i ) {
value <<= 2 ;
value |= data->gpio_config[i] & 0x03 ;
if( (i & 0x03) == 0 ) {
adm1026_write_value(client,
ADM1026_REG_GPIO_CFG_0_3 + i/4,
value );
value = 0 ;
}
}
/* Print the new config */
adm1026_print_gpio(client);
}
void adm1026_update_client(struct i2c_client *client)
{
struct adm1026_data *data = client->data;
int i;
long value, alarms, gpio ;
down(&data->update_lock);
if (!data->valid
|| (jiffies - data->last_reading > ADM1026_DATA_INTERVAL )) {
/* Things that change quickly */
#ifdef DEBUG
printk("adm1026(%d): Reading sensor values\n", client->id);
#endif
for (i = 0 ; i <= 16 ; ++i) {
data->in[i] =
adm1026_read_value(client, ADM1026_REG_IN(i));
}
for (i = 0 ; i <= 7 ; ++i) {
data->fan[i] =
adm1026_read_value(client, ADM1026_REG_FAN(i));
}
for (i = 0 ; i <= 2 ; ++i) {
/* NOTE: temp[] is s8 and we assume 2's complement
* "conversion" in the assignment */
data->temp[i] =
adm1026_read_value(client, ADM1026_REG_TEMP(i));
}
data->pwm = adm1026_read_value(client, ADM1026_REG_PWM);
data->analog_out = adm1026_read_value(client, ADM1026_REG_DAC);
/* GPIO16 is MSbit of alarms, move it to gpio */
alarms = adm1026_read_value(client, ADM1026_REG_STATUS4);
gpio = alarms & 0x80 ? 0x0100 : 0 ; /* GPIO16 */
alarms &= 0x7f ;
alarms <<= 8 ;
alarms |= adm1026_read_value(client, ADM1026_REG_STATUS3);
alarms <<= 8 ;
alarms |= adm1026_read_value(client, ADM1026_REG_STATUS2);
alarms <<= 8 ;
alarms |= adm1026_read_value(client, ADM1026_REG_STATUS1);
data->alarms = alarms ;
/* Read the GPIO values */
gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_STATUS_8_15);
gpio <<= 8 ;
gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_STATUS_0_7);
data->gpio = gpio ;
data->last_reading = jiffies ;
}; /* last_reading */
if (!data->valid
|| (jiffies - data->last_config > ADM1026_CONFIG_INTERVAL) ) {
/* Things that don't change often */
#ifdef DEBUG
printk("adm1026(%d): Reading config values\n", client->id);
#endif
for (i = 0 ; i <= 16 ; ++i) {
data->in_min[i] =
adm1026_read_value(client, ADM1026_REG_IN_MIN(i));
data->in_max[i] =
adm1026_read_value(client, ADM1026_REG_IN_MAX(i));
}
value = adm1026_read_value(client, ADM1026_REG_FAN_DIV_0_3)
| (adm1026_read_value(client, ADM1026_REG_FAN_DIV_4_7) << 8);
for (i = 0 ; i <= 7 ; ++i) {
data->fan_min[i] =
adm1026_read_value(client, ADM1026_REG_FAN_MIN(i));
data->fan_div[i] = DIV_FROM_REG(value & 0x03);
value >>= 2 ;
}
for (i = 0; i <= 2; ++i) {
/* NOTE: temp_xxx[] are s8 and we assume 2's complement
* "conversion" in the assignment */
data->temp_min[i] =
adm1026_read_value(client, ADM1026_REG_TEMP_MIN(i));
data->temp_max[i] =
adm1026_read_value(client, ADM1026_REG_TEMP_MAX(i));
data->temp_tmin[i] =
adm1026_read_value(client, ADM1026_REG_TEMP_TMIN(i));
data->temp_therm[i] =
adm1026_read_value(client, ADM1026_REG_TEMP_THERM(i));
data->temp_offset[i] =
adm1026_read_value(client, ADM1026_REG_TEMP_OFFSET(i));
}
/* Read the STATUS/alarm masks */
alarms = adm1026_read_value(client, ADM1026_REG_MASK4);
gpio = alarms & 0x80 ? 0x0100 : 0 ; /* GPIO16 */
alarms = (alarms & 0x7f) << 8 ;
alarms |= adm1026_read_value(client, ADM1026_REG_MASK3);
alarms <<= 8 ;
alarms |= adm1026_read_value(client, ADM1026_REG_MASK2);
alarms <<= 8 ;
alarms |= adm1026_read_value(client, ADM1026_REG_MASK1);
data->alarm_mask = alarms ;
/* Read the GPIO values */
gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_8_15);
gpio <<= 8 ;
gpio |= adm1026_read_value(client, ADM1026_REG_GPIO_MASK_0_7);
data->gpio_mask = gpio ;
/* Read the GPIO config */
data->config2 = adm1026_read_value(client, ADM1026_REG_CONFIG2);
data->config3 = adm1026_read_value(client, ADM1026_REG_CONFIG3);
data->gpio_config[16] = (data->config3 >> 6) & 0x03 ;
value = 0 ;
for( i = 0 ; i <= 15 ; ++i ) {
if( (i & 0x03) == 0 ) {
value = adm1026_read_value(client,
ADM1026_REG_GPIO_CFG_0_3 + i/4 );
}
data->gpio_config[i] = value & 0x03 ;
value >>= 2 ;
}
data->last_config = jiffies;
}; /* last_config */
/* We don't know where or even _if_ the VID might be on the GPIO
* pins. But the datasheet gives an example config showing
* GPIO11-15 being used to monitor VID0-4, so we go with that
* but make the vid WRITEABLE so if it's wrong, the user can
* set it in /etc/sensors.conf perhaps using an expression or
* 0 to trigger a re-read from the GPIO pins.
*/
if( data->vid == ADM1026_INIT_VID ) {
/* Hasn't been set yet, make a bold assumption */
printk("adm1026(%d): Setting VID from GPIO11-15.\n",
client->id );
data->vid = (data->gpio >> 11) & 0x1f ;
}
data->valid = 1;
up(&data->update_lock);
}
/* The following functions are the call-back functions of the /proc/sys and
sysctl files. The appropriate function is referenced in the ctl_table
extra1 field.
Each function must return the magnitude (power of 10 to divide the
data with) if it is called with operation set to SENSORS_PROC_REAL_INFO.
It must put a maximum of *nrels elements in results reflecting the
data of this file, and set *nrels to the number it actually put in
it, if operation is SENSORS_PROC_REAL_READ. Finally, it must get
up to *nrels elements from results and write them to the chip, if
operations is SENSORS_PROC_REAL_WRITE.
*/
void adm1026_in(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
int nr = ctl_name - ADM1026_SYSCTL_IN0;
/* We handle in0 - in15 here. in16 (-12V) is handled below */
if (nr < 0 || nr > 15)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 3; /* 1.000 */
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = INS_FROM_REG(nr,data->in_min[nr]);
results[1] = INS_FROM_REG(nr,data->in_max[nr]);
results[2] = INS_FROM_REG(nr,data->in[nr]);
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 1) {
data->in_max[nr] = INS_TO_REG(nr,results[1]);
adm1026_write_value(client, ADM1026_REG_IN_MAX(nr),
data->in_max[nr]);
}
if (*nrels_mag > 0) {
data->in_min[nr] = INS_TO_REG(nr,results[0]);
adm1026_write_value(client, ADM1026_REG_IN_MIN(nr),
data->in_min[nr]);
}
up(&data->update_lock);
}
}
void adm1026_in16(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
int nr = ctl_name - ADM1026_SYSCTL_IN0;
/* We handle in16 (-12V) here */
if (nr != 16)
return ; /* ERROR */
/* Apply offset and swap min/max so that min is 90% of
* target and max is 110% of target.
*/
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 3; /* 1.000 */
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = INS_FROM_REG(nr,data->in_max[nr])-NEG12_OFFSET ;
results[1] = INS_FROM_REG(nr,data->in_min[nr])-NEG12_OFFSET ;
results[2] = INS_FROM_REG(nr,data->in[nr])-NEG12_OFFSET ;
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 1) {
data->in_min[nr] = INS_TO_REG(nr,results[1]+NEG12_OFFSET);
adm1026_write_value(client, ADM1026_REG_IN_MIN(nr),
data->in_min[nr]);
}
if (*nrels_mag > 0) {
data->in_max[nr] = INS_TO_REG(nr,results[0]+NEG12_OFFSET);
adm1026_write_value(client, ADM1026_REG_IN_MAX(nr),
data->in_max[nr]);
}
up(&data->update_lock);
}
}
void adm1026_fan(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
int nr = ctl_name - ADM1026_SYSCTL_FAN0 ;
if (nr < 0 || nr > 7)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = FAN_FROM_REG(data->fan_min[nr], data->fan_div[nr]);
results[1] = FAN_FROM_REG(data->fan[nr], data->fan_div[nr]);
*nrels_mag = 2;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 0) {
data->fan_min[nr] = FAN_TO_REG(results[0],
data->fan_div[nr]);
adm1026_write_value(client, ADM1026_REG_FAN_MIN(nr),
data->fan_min[nr]);
}
up(&data->update_lock);
}
}
/* Adjust fan_min to account for new fan divisor */
void adm1026_fixup_fan_min(struct i2c_client *client, int fan, int old_div)
{
struct adm1026_data *data = client->data;
int new_div = data->fan_div[fan] ;
int new_min;
/* 0 and 0xff are special. Don't adjust them */
if( data->fan_min[fan] == 0 || data->fan_min[fan] == 0xff ) {
return ;
}
new_min = data->fan_min[fan] * old_div / new_div ;
new_min = SENSORS_LIMIT(new_min, 1, 254);
data->fan_min[fan] = new_min ;
adm1026_write_value(client, ADM1026_REG_FAN_MIN(fan), new_min);
}
void adm1026_fan_div(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
int i ;
int value, div, old ;
if (ctl_name != ADM1026_SYSCTL_FAN_DIV)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
for( i = 0 ; i <= 7 ; ++i ) {
results[i] = data->fan_div[i] ;
}
*nrels_mag = 8;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
value = 0 ;
for( i = 7 ; i >= 0 ; --i ) {
value <<= 2 ;
if (*nrels_mag > i) {
old = data->fan_div[i] ;
div = DIV_TO_REG(results[i]) ;
data->fan_div[i] = DIV_FROM_REG(div) ;
if( data->fan_div[i] != old ) {
adm1026_fixup_fan_min(client,i,old);
}
} else {
div = DIV_TO_REG(data->fan_div[i]) ;
}
value |= div ;
}
adm1026_write_value(client, ADM1026_REG_FAN_DIV_0_3,
value & 0xff);
adm1026_write_value(client, ADM1026_REG_FAN_DIV_4_7,
(value >> 8) & 0xff);
up(&data->update_lock);
}
}
void adm1026_temp(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
int nr = ctl_name - ADM1026_SYSCTL_TEMP1 ;
if (nr < 0 || nr > 2)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = TEMP_FROM_REG(data->temp_min[nr]);
results[1] = TEMP_FROM_REG(data->temp_max[nr]);
results[2] = TEMP_FROM_REG(data->temp[nr]);
*nrels_mag = 3;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 1) {
data->temp_max[nr] = TEMP_TO_REG(results[1]);
adm1026_write_value(client, ADM1026_REG_TEMP_MAX(nr),
data->temp_max[nr]);
}
if (*nrels_mag > 0) {
data->temp_min[nr] = TEMP_TO_REG(results[0]);
adm1026_write_value(client, ADM1026_REG_TEMP_MIN(nr),
data->temp_min[nr]);
}
up(&data->update_lock);
}
}
void adm1026_temp_offset(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
int nr = ctl_name - ADM1026_SYSCTL_TEMP_OFFSET1 ;
if (nr < 0 || nr > 2)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = TEMP_FROM_REG(data->temp_offset[nr]);
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 0) {
data->temp_offset[nr] = TEMP_TO_REG(results[0]);
adm1026_write_value(client, ADM1026_REG_TEMP_OFFSET(nr),
data->temp_offset[nr]);
}
up(&data->update_lock);
}
}
void adm1026_temp_tmin(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
int nr = ctl_name - ADM1026_SYSCTL_TEMP_TMIN1 ;
if (nr < 0 || nr > 2)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = TEMP_FROM_REG(data->temp_tmin[nr]);
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 0) {
data->temp_tmin[nr] = TEMP_TO_REG(results[0]);
adm1026_write_value(client, ADM1026_REG_TEMP_TMIN(nr),
data->temp_tmin[nr]);
}
up(&data->update_lock);
}
}
void adm1026_temp_therm(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
int nr = ctl_name - ADM1026_SYSCTL_TEMP_THERM1 ;
if (nr < 0 || nr > 2)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = TEMP_FROM_REG(data->temp_therm[nr]);
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 0) {
data->temp_therm[nr] = TEMP_TO_REG(results[0]);
adm1026_write_value(client, ADM1026_REG_TEMP_THERM(nr),
data->temp_therm[nr]);
}
up(&data->update_lock);
}
}
void adm1026_pwm(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
if (ctl_name != ADM1026_SYSCTL_PWM)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = PWM_FROM_REG(data->pwm);
results[1] = 1 ; /* Always enabled */
*nrels_mag = 2;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
/* PWM enable is read-only */
if (*nrels_mag > 0) {
data->pwm = PWM_TO_REG(results[0]);
adm1026_write_value(client, ADM1026_REG_PWM,
data->pwm);
}
up(&data->update_lock);
}
}
void adm1026_analog_out(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
if (ctl_name != ADM1026_SYSCTL_ANALOG_OUT)
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0; /* 0 - 255 */
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = DAC_FROM_REG(data->analog_out);
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 0) {
data->analog_out = DAC_TO_REG(results[0]);
adm1026_write_value(client, ADM1026_REG_DAC,
data->analog_out);
}
up(&data->update_lock);
}
}
void adm1026_afc(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
if (ctl_name != ADM1026_SYSCTL_AFC)
return ; /* ERROR */
/* PWM auto fan control, DAC auto fan control */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = (data->config1 & CFG1_PWM_AFC) != 0 ;
results[1] = (data->config1 & CFG1_DAC_AFC) != 0 ;
*nrels_mag = 2;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 1) {
data->config1 = (data->config1 & ~CFG1_DAC_AFC)
| (results[1] ? CFG1_DAC_AFC : 0) ;
}
if (*nrels_mag > 0) {
data->config1 = (data->config1 & ~CFG1_PWM_AFC)
| (results[0] ? CFG1_PWM_AFC : 0) ;
adm1026_write_value(client, ADM1026_REG_CONFIG1,
data->config1);
}
up(&data->update_lock);
}
}
void adm1026_vid(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
if( ctl_name != ADM1026_SYSCTL_VID )
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 3;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = VID_FROM_REG((data->vid)&0x3f,data->vrm);
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
/* Hmmm... There isn't a VID_TO_REG mapping */
if (*nrels_mag > 0) {
if( results[0] >= 0 ) {
data->vid = results[0] & 0x3f ;
} else {
data->vid = ADM1026_INIT_VID ;
}
}
up(&data->update_lock);
}
}
void adm1026_vrm(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
if( ctl_name != ADM1026_SYSCTL_VRM )
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 1;
else if (operation == SENSORS_PROC_REAL_READ) {
results[0] = data->vrm ;
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
if (*nrels_mag > 0) {
data->vrm = results[0] ;
}
}
}
void adm1026_alarms(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
if( ctl_name != ADM1026_SYSCTL_ALARMS )
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = data->alarms ;
*nrels_mag = 1;
}
/* FIXME: Perhaps we should implement a write function
* to clear an alarm?
*/
}
void adm1026_alarm_mask(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
unsigned long mask ;
if( ctl_name != ADM1026_SYSCTL_ALARM_MASK )
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = data->alarm_mask ;
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 0) {
data->alarm_mask = results[0] & 0x7fffffff ;
mask = data->alarm_mask
| (data->gpio_mask & 0x10000 ? 0x80000000 : 0) ;
adm1026_write_value(client, ADM1026_REG_MASK1,
mask & 0xff);
mask >>= 8 ;
adm1026_write_value(client, ADM1026_REG_MASK2,
mask & 0xff);
mask >>= 8 ;
adm1026_write_value(client, ADM1026_REG_MASK3,
mask & 0xff);
mask >>= 8 ;
adm1026_write_value(client, ADM1026_REG_MASK4,
mask & 0xff);
}
up(&data->update_lock);
}
}
void adm1026_gpio(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
long gpio ;
if( ctl_name != ADM1026_SYSCTL_GPIO )
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = data->gpio ;
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 0) {
data->gpio = results[0] & 0x1ffff ;
gpio = data->gpio ;
adm1026_write_value(client,
ADM1026_REG_GPIO_STATUS_0_7,
gpio & 0xff );
gpio >>= 8 ;
adm1026_write_value(client,
ADM1026_REG_GPIO_STATUS_8_15,
gpio & 0xff );
gpio = ((gpio >> 1) & 0x80)
| (data->alarms >> 24 & 0x7f);
adm1026_write_value(client,
ADM1026_REG_STATUS4,
gpio & 0xff );
}
up(&data->update_lock);
}
}
void adm1026_gpio_mask(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results)
{
struct adm1026_data *data = client->data;
long mask ;
if( ctl_name != ADM1026_SYSCTL_GPIO_MASK )
return ; /* ERROR */
if (operation == SENSORS_PROC_REAL_INFO)
*nrels_mag = 0;
else if (operation == SENSORS_PROC_REAL_READ) {
adm1026_update_client(client);
results[0] = data->gpio_mask ;
*nrels_mag = 1;
} else if (operation == SENSORS_PROC_REAL_WRITE) {
down(&data->update_lock);
if (*nrels_mag > 0) {
data->gpio_mask = results[0] & 0x1ffff ;
mask = data->gpio_mask ;
adm1026_write_value(client, ADM1026_REG_GPIO_MASK_0_7,
mask & 0xff);
mask >>= 8 ;
adm1026_write_value(client, ADM1026_REG_GPIO_MASK_8_15,
mask & 0xff);
mask = ((mask >> 1) & 0x80)
| (data->alarm_mask >> 24 & 0x7f);
adm1026_write_value(client, ADM1026_REG_MASK1,
mask & 0xff);
}
up(&data->update_lock);
}
}
static int __init sm_adm1026_init(void)
{
printk("adm1026: Version %s (%s)\n", LM_VERSION, LM_DATE);
printk("adm1026: See http://www.penguincomputing.com/lm_sensors for more info.\n" );
return i2c_add_driver(&adm1026_driver);
}
static void __exit sm_adm1026_exit(void)
{
i2c_del_driver(&adm1026_driver);
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Philip Pokorny <ppokorny@penguincomputing.com");
MODULE_DESCRIPTION("ADM1026 driver");
module_init(sm_adm1026_init);
module_exit(sm_adm1026_exit);
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