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c1685f61b0
hwmon: Fix unchecked return status, batch 1 Fix up some hwmon drivers so that they no longer ignore return status from device_create_file(). Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
1082 lines
30 KiB
C
1082 lines
30 KiB
C
/*
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asb100.c - Part of lm_sensors, Linux kernel modules for hardware
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monitoring
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Copyright (C) 2004 Mark M. Hoffman <mhoffman@lightlink.com>
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(derived from w83781d.c)
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Copyright (C) 1998 - 2003 Frodo Looijaard <frodol@dds.nl>,
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Philip Edelbrock <phil@netroedge.com>, and
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Mark Studebaker <mdsxyz123@yahoo.com>
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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; either version 2 of the License, or
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(at your option) any later version.
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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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This driver supports the hardware sensor chips: Asus ASB100 and
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ASB100-A "BACH".
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ASB100-A supports pwm1, while plain ASB100 does not. There is no known
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way for the driver to tell which one is there.
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Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA
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asb100 7 3 1 4 0x31 0x0694 yes no
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*/
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#include <linux/module.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/err.h>
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#include <linux/init.h>
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#include <linux/jiffies.h>
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#include <linux/mutex.h>
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#include "lm75.h"
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/*
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HISTORY:
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2003-12-29 1.0.0 Ported from lm_sensors project for kernel 2.6
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*/
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#define ASB100_VERSION "1.0.0"
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/* I2C addresses to scan */
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static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END };
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_1(asb100);
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I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
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"{bus, clientaddr, subclientaddr1, subclientaddr2}");
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/* Voltage IN registers 0-6 */
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#define ASB100_REG_IN(nr) (0x20 + (nr))
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#define ASB100_REG_IN_MAX(nr) (0x2b + (nr * 2))
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#define ASB100_REG_IN_MIN(nr) (0x2c + (nr * 2))
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/* FAN IN registers 1-3 */
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#define ASB100_REG_FAN(nr) (0x28 + (nr))
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#define ASB100_REG_FAN_MIN(nr) (0x3b + (nr))
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/* TEMPERATURE registers 1-4 */
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static const u16 asb100_reg_temp[] = {0, 0x27, 0x150, 0x250, 0x17};
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static const u16 asb100_reg_temp_max[] = {0, 0x39, 0x155, 0x255, 0x18};
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static const u16 asb100_reg_temp_hyst[] = {0, 0x3a, 0x153, 0x253, 0x19};
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#define ASB100_REG_TEMP(nr) (asb100_reg_temp[nr])
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#define ASB100_REG_TEMP_MAX(nr) (asb100_reg_temp_max[nr])
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#define ASB100_REG_TEMP_HYST(nr) (asb100_reg_temp_hyst[nr])
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#define ASB100_REG_TEMP2_CONFIG 0x0152
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#define ASB100_REG_TEMP3_CONFIG 0x0252
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#define ASB100_REG_CONFIG 0x40
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#define ASB100_REG_ALARM1 0x41
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#define ASB100_REG_ALARM2 0x42
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#define ASB100_REG_SMIM1 0x43
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#define ASB100_REG_SMIM2 0x44
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#define ASB100_REG_VID_FANDIV 0x47
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#define ASB100_REG_I2C_ADDR 0x48
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#define ASB100_REG_CHIPID 0x49
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#define ASB100_REG_I2C_SUBADDR 0x4a
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#define ASB100_REG_PIN 0x4b
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#define ASB100_REG_IRQ 0x4c
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#define ASB100_REG_BANK 0x4e
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#define ASB100_REG_CHIPMAN 0x4f
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#define ASB100_REG_WCHIPID 0x58
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/* bit 7 -> enable, bits 0-3 -> duty cycle */
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#define ASB100_REG_PWM1 0x59
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/* CONVERSIONS
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Rounding and limit checking is only done on the TO_REG variants. */
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/* These constants are a guess, consistent w/ w83781d */
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#define ASB100_IN_MIN ( 0)
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#define ASB100_IN_MAX (4080)
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/* IN: 1/1000 V (0V to 4.08V)
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REG: 16mV/bit */
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static u8 IN_TO_REG(unsigned val)
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{
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unsigned nval = SENSORS_LIMIT(val, ASB100_IN_MIN, ASB100_IN_MAX);
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return (nval + 8) / 16;
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}
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static unsigned IN_FROM_REG(u8 reg)
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{
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return reg * 16;
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}
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static u8 FAN_TO_REG(long rpm, int div)
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{
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if (rpm == -1)
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return 0;
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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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static int FAN_FROM_REG(u8 val, int div)
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{
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return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div);
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}
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/* These constants are a guess, consistent w/ w83781d */
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#define ASB100_TEMP_MIN (-128000)
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#define ASB100_TEMP_MAX ( 127000)
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/* TEMP: 0.001C/bit (-128C to +127C)
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REG: 1C/bit, two's complement */
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static u8 TEMP_TO_REG(int temp)
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{
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int ntemp = SENSORS_LIMIT(temp, ASB100_TEMP_MIN, ASB100_TEMP_MAX);
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ntemp += (ntemp<0 ? -500 : 500);
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return (u8)(ntemp / 1000);
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}
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static int TEMP_FROM_REG(u8 reg)
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{
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return (s8)reg * 1000;
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}
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/* PWM: 0 - 255 per sensors documentation
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REG: (6.25% duty cycle per bit) */
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static u8 ASB100_PWM_TO_REG(int pwm)
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{
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pwm = SENSORS_LIMIT(pwm, 0, 255);
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return (u8)(pwm / 16);
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}
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static int ASB100_PWM_FROM_REG(u8 reg)
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{
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return reg * 16;
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}
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#define DIV_FROM_REG(val) (1 << (val))
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/* FAN DIV: 1, 2, 4, or 8 (defaults to 2)
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REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */
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static u8 DIV_TO_REG(long val)
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{
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return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1;
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}
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/* For each registered client, we need to keep some data in memory. That
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data is pointed to by client->data. The structure itself is
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dynamically allocated, at the same time the client itself is allocated. */
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struct asb100_data {
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struct i2c_client client;
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struct class_device *class_dev;
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struct mutex lock;
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enum chips type;
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struct mutex update_lock;
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unsigned long last_updated; /* In jiffies */
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/* array of 2 pointers to subclients */
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struct i2c_client *lm75[2];
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char valid; /* !=0 if following fields are valid */
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u8 in[7]; /* Register value */
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u8 in_max[7]; /* Register value */
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u8 in_min[7]; /* Register value */
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u8 fan[3]; /* Register value */
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u8 fan_min[3]; /* Register value */
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u16 temp[4]; /* Register value (0 and 3 are u8 only) */
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u16 temp_max[4]; /* Register value (0 and 3 are u8 only) */
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u16 temp_hyst[4]; /* Register value (0 and 3 are u8 only) */
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u8 fan_div[3]; /* Register encoding, right justified */
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u8 pwm; /* Register encoding */
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u8 vid; /* Register encoding, combined */
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u32 alarms; /* Register encoding, combined */
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u8 vrm;
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};
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static int asb100_read_value(struct i2c_client *client, u16 reg);
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static void asb100_write_value(struct i2c_client *client, u16 reg, u16 val);
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static int asb100_attach_adapter(struct i2c_adapter *adapter);
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static int asb100_detect(struct i2c_adapter *adapter, int address, int kind);
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static int asb100_detach_client(struct i2c_client *client);
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static struct asb100_data *asb100_update_device(struct device *dev);
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static void asb100_init_client(struct i2c_client *client);
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static struct i2c_driver asb100_driver = {
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.driver = {
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.name = "asb100",
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},
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.id = I2C_DRIVERID_ASB100,
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.attach_adapter = asb100_attach_adapter,
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.detach_client = asb100_detach_client,
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};
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/* 7 Voltages */
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#define show_in_reg(reg) \
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static ssize_t show_##reg (struct device *dev, char *buf, int nr) \
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{ \
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struct asb100_data *data = asb100_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 set_in_reg(REG, reg) \
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static ssize_t set_in_##reg(struct device *dev, const char *buf, \
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size_t count, int nr) \
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{ \
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struct i2c_client *client = to_i2c_client(dev); \
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struct asb100_data *data = i2c_get_clientdata(client); \
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unsigned long val = simple_strtoul(buf, NULL, 10); \
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\
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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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asb100_write_value(client, ASB100_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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set_in_reg(MIN, min)
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set_in_reg(MAX, max)
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#define sysfs_in(offset) \
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static ssize_t \
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show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_in(dev, buf, offset); \
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} \
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static DEVICE_ATTR(in##offset##_input, S_IRUGO, \
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show_in##offset, NULL); \
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static ssize_t \
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show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_in_min(dev, buf, offset); \
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} \
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static ssize_t \
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show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_in_max(dev, buf, offset); \
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} \
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static ssize_t set_in##offset##_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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return set_in_min(dev, buf, count, offset); \
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} \
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static ssize_t set_in##offset##_max (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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return set_in_max(dev, buf, count, offset); \
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} \
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static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \
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show_in##offset##_min, set_in##offset##_min); \
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static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \
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show_in##offset##_max, set_in##offset##_max);
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sysfs_in(0);
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sysfs_in(1);
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sysfs_in(2);
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sysfs_in(3);
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sysfs_in(4);
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sysfs_in(5);
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sysfs_in(6);
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/* 3 Fans */
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static ssize_t show_fan(struct device *dev, char *buf, int nr)
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{
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struct asb100_data *data = asb100_update_device(dev);
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
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DIV_FROM_REG(data->fan_div[nr])));
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}
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static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
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{
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struct asb100_data *data = asb100_update_device(dev);
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return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr],
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DIV_FROM_REG(data->fan_div[nr])));
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}
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static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
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{
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struct asb100_data *data = asb100_update_device(dev);
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return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
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}
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static ssize_t set_fan_min(struct device *dev, const char *buf,
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size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct asb100_data *data = i2c_get_clientdata(client);
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u32 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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asb100_write_value(client, ASB100_REG_FAN_MIN(nr), 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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/* 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 set_fan_div(struct device *dev, const char *buf,
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size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct asb100_data *data = i2c_get_clientdata(client);
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unsigned long min;
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unsigned long val = simple_strtoul(buf, NULL, 10);
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int reg;
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mutex_lock(&data->update_lock);
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min = FAN_FROM_REG(data->fan_min[nr],
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DIV_FROM_REG(data->fan_div[nr]));
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data->fan_div[nr] = DIV_TO_REG(val);
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switch(nr) {
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case 0: /* fan 1 */
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reg = asb100_read_value(client, ASB100_REG_VID_FANDIV);
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reg = (reg & 0xcf) | (data->fan_div[0] << 4);
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asb100_write_value(client, ASB100_REG_VID_FANDIV, reg);
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break;
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case 1: /* fan 2 */
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reg = asb100_read_value(client, ASB100_REG_VID_FANDIV);
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reg = (reg & 0x3f) | (data->fan_div[1] << 6);
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asb100_write_value(client, ASB100_REG_VID_FANDIV, reg);
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break;
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case 2: /* fan 3 */
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reg = asb100_read_value(client, ASB100_REG_PIN);
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reg = (reg & 0x3f) | (data->fan_div[2] << 6);
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asb100_write_value(client, ASB100_REG_PIN, reg);
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break;
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}
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data->fan_min[nr] =
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FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
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asb100_write_value(client, ASB100_REG_FAN_MIN(nr), 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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#define sysfs_fan(offset) \
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static ssize_t show_fan##offset(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_fan(dev, buf, offset - 1); \
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} \
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static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_fan_min(dev, buf, offset - 1); \
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} \
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static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \
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{ \
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return show_fan_div(dev, buf, offset - 1); \
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} \
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static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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return set_fan_min(dev, buf, count, offset - 1); \
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} \
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static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \
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size_t count) \
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{ \
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return set_fan_div(dev, buf, count, offset - 1); \
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} \
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static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
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show_fan##offset, NULL); \
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static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
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show_fan##offset##_min, set_fan##offset##_min); \
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static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \
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show_fan##offset##_div, set_fan##offset##_div);
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sysfs_fan(1);
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sysfs_fan(2);
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sysfs_fan(3);
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/* 4 Temp. Sensors */
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static int sprintf_temp_from_reg(u16 reg, char *buf, int nr)
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{
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int ret = 0;
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switch (nr) {
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case 1: case 2:
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ret = sprintf(buf, "%d\n", LM75_TEMP_FROM_REG(reg));
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break;
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case 0: case 3: default:
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ret = sprintf(buf, "%d\n", TEMP_FROM_REG(reg));
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break;
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}
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return ret;
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}
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|
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#define show_temp_reg(reg) \
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static ssize_t show_##reg(struct device *dev, char *buf, int nr) \
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{ \
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struct asb100_data *data = asb100_update_device(dev); \
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return sprintf_temp_from_reg(data->reg[nr], buf, nr); \
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}
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|
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show_temp_reg(temp);
|
|
show_temp_reg(temp_max);
|
|
show_temp_reg(temp_hyst);
|
|
|
|
#define set_temp_reg(REG, reg) \
|
|
static ssize_t set_##reg(struct device *dev, const char *buf, \
|
|
size_t count, int nr) \
|
|
{ \
|
|
struct i2c_client *client = to_i2c_client(dev); \
|
|
struct asb100_data *data = i2c_get_clientdata(client); \
|
|
unsigned long val = simple_strtoul(buf, NULL, 10); \
|
|
\
|
|
mutex_lock(&data->update_lock); \
|
|
switch (nr) { \
|
|
case 1: case 2: \
|
|
data->reg[nr] = LM75_TEMP_TO_REG(val); \
|
|
break; \
|
|
case 0: case 3: default: \
|
|
data->reg[nr] = TEMP_TO_REG(val); \
|
|
break; \
|
|
} \
|
|
asb100_write_value(client, ASB100_REG_TEMP_##REG(nr+1), \
|
|
data->reg[nr]); \
|
|
mutex_unlock(&data->update_lock); \
|
|
return count; \
|
|
}
|
|
|
|
set_temp_reg(MAX, temp_max);
|
|
set_temp_reg(HYST, temp_hyst);
|
|
|
|
#define sysfs_temp(num) \
|
|
static ssize_t show_temp##num(struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_temp(dev, buf, num-1); \
|
|
} \
|
|
static DEVICE_ATTR(temp##num##_input, S_IRUGO, show_temp##num, NULL); \
|
|
static ssize_t show_temp_max##num(struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_temp_max(dev, buf, num-1); \
|
|
} \
|
|
static ssize_t set_temp_max##num(struct device *dev, struct device_attribute *attr, const char *buf, \
|
|
size_t count) \
|
|
{ \
|
|
return set_temp_max(dev, buf, count, num-1); \
|
|
} \
|
|
static DEVICE_ATTR(temp##num##_max, S_IRUGO | S_IWUSR, \
|
|
show_temp_max##num, set_temp_max##num); \
|
|
static ssize_t show_temp_hyst##num(struct device *dev, struct device_attribute *attr, char *buf) \
|
|
{ \
|
|
return show_temp_hyst(dev, buf, num-1); \
|
|
} \
|
|
static ssize_t set_temp_hyst##num(struct device *dev, struct device_attribute *attr, const char *buf, \
|
|
size_t count) \
|
|
{ \
|
|
return set_temp_hyst(dev, buf, count, num-1); \
|
|
} \
|
|
static DEVICE_ATTR(temp##num##_max_hyst, S_IRUGO | S_IWUSR, \
|
|
show_temp_hyst##num, set_temp_hyst##num);
|
|
|
|
sysfs_temp(1);
|
|
sysfs_temp(2);
|
|
sysfs_temp(3);
|
|
sysfs_temp(4);
|
|
|
|
/* VID */
|
|
static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct asb100_data *data = asb100_update_device(dev);
|
|
return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm));
|
|
}
|
|
|
|
static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL);
|
|
|
|
/* VRM */
|
|
static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct asb100_data *data = asb100_update_device(dev);
|
|
return sprintf(buf, "%d\n", data->vrm);
|
|
}
|
|
|
|
static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct asb100_data *data = i2c_get_clientdata(client);
|
|
unsigned long val = simple_strtoul(buf, NULL, 10);
|
|
data->vrm = val;
|
|
return count;
|
|
}
|
|
|
|
/* Alarms */
|
|
static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm);
|
|
|
|
static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct asb100_data *data = asb100_update_device(dev);
|
|
return sprintf(buf, "%u\n", data->alarms);
|
|
}
|
|
|
|
static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
|
|
|
|
/* 1 PWM */
|
|
static ssize_t show_pwm1(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct asb100_data *data = asb100_update_device(dev);
|
|
return sprintf(buf, "%d\n", ASB100_PWM_FROM_REG(data->pwm & 0x0f));
|
|
}
|
|
|
|
static ssize_t set_pwm1(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct asb100_data *data = i2c_get_clientdata(client);
|
|
unsigned long val = simple_strtoul(buf, NULL, 10);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->pwm &= 0x80; /* keep the enable bit */
|
|
data->pwm |= (0x0f & ASB100_PWM_TO_REG(val));
|
|
asb100_write_value(client, ASB100_REG_PWM1, data->pwm);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_pwm_enable1(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
struct asb100_data *data = asb100_update_device(dev);
|
|
return sprintf(buf, "%d\n", (data->pwm & 0x80) ? 1 : 0);
|
|
}
|
|
|
|
static ssize_t set_pwm_enable1(struct device *dev, struct device_attribute *attr, const char *buf,
|
|
size_t count)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct asb100_data *data = i2c_get_clientdata(client);
|
|
unsigned long val = simple_strtoul(buf, NULL, 10);
|
|
|
|
mutex_lock(&data->update_lock);
|
|
data->pwm &= 0x0f; /* keep the duty cycle bits */
|
|
data->pwm |= (val ? 0x80 : 0x00);
|
|
asb100_write_value(client, ASB100_REG_PWM1, data->pwm);
|
|
mutex_unlock(&data->update_lock);
|
|
return count;
|
|
}
|
|
|
|
static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm1, set_pwm1);
|
|
static DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
|
|
show_pwm_enable1, set_pwm_enable1);
|
|
|
|
static struct attribute *asb100_attributes[] = {
|
|
&dev_attr_in0_input.attr,
|
|
&dev_attr_in0_min.attr,
|
|
&dev_attr_in0_max.attr,
|
|
&dev_attr_in1_input.attr,
|
|
&dev_attr_in1_min.attr,
|
|
&dev_attr_in1_max.attr,
|
|
&dev_attr_in2_input.attr,
|
|
&dev_attr_in2_min.attr,
|
|
&dev_attr_in2_max.attr,
|
|
&dev_attr_in3_input.attr,
|
|
&dev_attr_in3_min.attr,
|
|
&dev_attr_in3_max.attr,
|
|
&dev_attr_in4_input.attr,
|
|
&dev_attr_in4_min.attr,
|
|
&dev_attr_in4_max.attr,
|
|
&dev_attr_in5_input.attr,
|
|
&dev_attr_in5_min.attr,
|
|
&dev_attr_in5_max.attr,
|
|
&dev_attr_in6_input.attr,
|
|
&dev_attr_in6_min.attr,
|
|
&dev_attr_in6_max.attr,
|
|
|
|
&dev_attr_fan1_input.attr,
|
|
&dev_attr_fan1_min.attr,
|
|
&dev_attr_fan1_div.attr,
|
|
&dev_attr_fan2_input.attr,
|
|
&dev_attr_fan2_min.attr,
|
|
&dev_attr_fan2_div.attr,
|
|
&dev_attr_fan3_input.attr,
|
|
&dev_attr_fan3_min.attr,
|
|
&dev_attr_fan3_div.attr,
|
|
|
|
&dev_attr_temp1_input.attr,
|
|
&dev_attr_temp1_max.attr,
|
|
&dev_attr_temp1_max_hyst.attr,
|
|
&dev_attr_temp2_input.attr,
|
|
&dev_attr_temp2_max.attr,
|
|
&dev_attr_temp2_max_hyst.attr,
|
|
&dev_attr_temp3_input.attr,
|
|
&dev_attr_temp3_max.attr,
|
|
&dev_attr_temp3_max_hyst.attr,
|
|
&dev_attr_temp4_input.attr,
|
|
&dev_attr_temp4_max.attr,
|
|
&dev_attr_temp4_max_hyst.attr,
|
|
|
|
&dev_attr_cpu0_vid.attr,
|
|
&dev_attr_vrm.attr,
|
|
&dev_attr_alarms.attr,
|
|
&dev_attr_pwm1.attr,
|
|
&dev_attr_pwm1_enable.attr,
|
|
|
|
NULL
|
|
};
|
|
|
|
static const struct attribute_group asb100_group = {
|
|
.attrs = asb100_attributes,
|
|
};
|
|
|
|
/* This function is called when:
|
|
asb100_driver is inserted (when this module is loaded), for each
|
|
available adapter
|
|
when a new adapter is inserted (and asb100_driver is still present)
|
|
*/
|
|
static int asb100_attach_adapter(struct i2c_adapter *adapter)
|
|
{
|
|
if (!(adapter->class & I2C_CLASS_HWMON))
|
|
return 0;
|
|
return i2c_probe(adapter, &addr_data, asb100_detect);
|
|
}
|
|
|
|
static int asb100_detect_subclients(struct i2c_adapter *adapter, int address,
|
|
int kind, struct i2c_client *new_client)
|
|
{
|
|
int i, id, err;
|
|
struct asb100_data *data = i2c_get_clientdata(new_client);
|
|
|
|
data->lm75[0] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
|
|
if (!(data->lm75[0])) {
|
|
err = -ENOMEM;
|
|
goto ERROR_SC_0;
|
|
}
|
|
|
|
data->lm75[1] = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
|
|
if (!(data->lm75[1])) {
|
|
err = -ENOMEM;
|
|
goto ERROR_SC_1;
|
|
}
|
|
|
|
id = i2c_adapter_id(adapter);
|
|
|
|
if (force_subclients[0] == id && force_subclients[1] == address) {
|
|
for (i = 2; i <= 3; i++) {
|
|
if (force_subclients[i] < 0x48 ||
|
|
force_subclients[i] > 0x4f) {
|
|
dev_err(&new_client->dev, "invalid subclient "
|
|
"address %d; must be 0x48-0x4f\n",
|
|
force_subclients[i]);
|
|
err = -ENODEV;
|
|
goto ERROR_SC_2;
|
|
}
|
|
}
|
|
asb100_write_value(new_client, ASB100_REG_I2C_SUBADDR,
|
|
(force_subclients[2] & 0x07) |
|
|
((force_subclients[3] & 0x07) <<4));
|
|
data->lm75[0]->addr = force_subclients[2];
|
|
data->lm75[1]->addr = force_subclients[3];
|
|
} else {
|
|
int val = asb100_read_value(new_client, ASB100_REG_I2C_SUBADDR);
|
|
data->lm75[0]->addr = 0x48 + (val & 0x07);
|
|
data->lm75[1]->addr = 0x48 + ((val >> 4) & 0x07);
|
|
}
|
|
|
|
if(data->lm75[0]->addr == data->lm75[1]->addr) {
|
|
dev_err(&new_client->dev, "duplicate addresses 0x%x "
|
|
"for subclients\n", data->lm75[0]->addr);
|
|
err = -ENODEV;
|
|
goto ERROR_SC_2;
|
|
}
|
|
|
|
for (i = 0; i <= 1; i++) {
|
|
i2c_set_clientdata(data->lm75[i], NULL);
|
|
data->lm75[i]->adapter = adapter;
|
|
data->lm75[i]->driver = &asb100_driver;
|
|
data->lm75[i]->flags = 0;
|
|
strlcpy(data->lm75[i]->name, "asb100 subclient", I2C_NAME_SIZE);
|
|
}
|
|
|
|
if ((err = i2c_attach_client(data->lm75[0]))) {
|
|
dev_err(&new_client->dev, "subclient %d registration "
|
|
"at address 0x%x failed.\n", i, data->lm75[0]->addr);
|
|
goto ERROR_SC_2;
|
|
}
|
|
|
|
if ((err = i2c_attach_client(data->lm75[1]))) {
|
|
dev_err(&new_client->dev, "subclient %d registration "
|
|
"at address 0x%x failed.\n", i, data->lm75[1]->addr);
|
|
goto ERROR_SC_3;
|
|
}
|
|
|
|
return 0;
|
|
|
|
/* Undo inits in case of errors */
|
|
ERROR_SC_3:
|
|
i2c_detach_client(data->lm75[0]);
|
|
ERROR_SC_2:
|
|
kfree(data->lm75[1]);
|
|
ERROR_SC_1:
|
|
kfree(data->lm75[0]);
|
|
ERROR_SC_0:
|
|
return err;
|
|
}
|
|
|
|
static int asb100_detect(struct i2c_adapter *adapter, int address, int kind)
|
|
{
|
|
int err;
|
|
struct i2c_client *new_client;
|
|
struct asb100_data *data;
|
|
|
|
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
|
|
pr_debug("asb100.o: detect failed, "
|
|
"smbus byte data not supported!\n");
|
|
err = -ENODEV;
|
|
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 asb100_{read,write}_value. */
|
|
|
|
if (!(data = kzalloc(sizeof(struct asb100_data), GFP_KERNEL))) {
|
|
pr_debug("asb100.o: detect failed, kzalloc failed!\n");
|
|
err = -ENOMEM;
|
|
goto ERROR0;
|
|
}
|
|
|
|
new_client = &data->client;
|
|
mutex_init(&data->lock);
|
|
i2c_set_clientdata(new_client, data);
|
|
new_client->addr = address;
|
|
new_client->adapter = adapter;
|
|
new_client->driver = &asb100_driver;
|
|
new_client->flags = 0;
|
|
|
|
/* Now, we do the remaining detection. */
|
|
|
|
/* The chip may be stuck in some other bank than bank 0. This may
|
|
make reading other information impossible. Specify a force=... or
|
|
force_*=... parameter, and the chip will be reset to the right
|
|
bank. */
|
|
if (kind < 0) {
|
|
|
|
int val1 = asb100_read_value(new_client, ASB100_REG_BANK);
|
|
int val2 = asb100_read_value(new_client, ASB100_REG_CHIPMAN);
|
|
|
|
/* If we're in bank 0 */
|
|
if ( (!(val1 & 0x07)) &&
|
|
/* Check for ASB100 ID (low byte) */
|
|
( ((!(val1 & 0x80)) && (val2 != 0x94)) ||
|
|
/* Check for ASB100 ID (high byte ) */
|
|
((val1 & 0x80) && (val2 != 0x06)) ) ) {
|
|
pr_debug("asb100.o: detect failed, "
|
|
"bad chip id 0x%02x!\n", val2);
|
|
err = -ENODEV;
|
|
goto ERROR1;
|
|
}
|
|
|
|
} /* kind < 0 */
|
|
|
|
/* We have either had a force parameter, or we have already detected
|
|
Winbond. Put it now into bank 0 and Vendor ID High Byte */
|
|
asb100_write_value(new_client, ASB100_REG_BANK,
|
|
(asb100_read_value(new_client, ASB100_REG_BANK) & 0x78) | 0x80);
|
|
|
|
/* Determine the chip type. */
|
|
if (kind <= 0) {
|
|
int val1 = asb100_read_value(new_client, ASB100_REG_WCHIPID);
|
|
int val2 = asb100_read_value(new_client, ASB100_REG_CHIPMAN);
|
|
|
|
if ((val1 == 0x31) && (val2 == 0x06))
|
|
kind = asb100;
|
|
else {
|
|
if (kind == 0)
|
|
dev_warn(&new_client->dev, "ignoring "
|
|
"'force' parameter for unknown chip "
|
|
"at adapter %d, address 0x%02x.\n",
|
|
i2c_adapter_id(adapter), address);
|
|
err = -ENODEV;
|
|
goto ERROR1;
|
|
}
|
|
}
|
|
|
|
/* Fill in remaining client fields and put it into the global list */
|
|
strlcpy(new_client->name, "asb100", I2C_NAME_SIZE);
|
|
data->type = kind;
|
|
|
|
data->valid = 0;
|
|
mutex_init(&data->update_lock);
|
|
|
|
/* Tell the I2C layer a new client has arrived */
|
|
if ((err = i2c_attach_client(new_client)))
|
|
goto ERROR1;
|
|
|
|
/* Attach secondary lm75 clients */
|
|
if ((err = asb100_detect_subclients(adapter, address, kind,
|
|
new_client)))
|
|
goto ERROR2;
|
|
|
|
/* Initialize the chip */
|
|
asb100_init_client(new_client);
|
|
|
|
/* A few vars need to be filled upon startup */
|
|
data->fan_min[0] = asb100_read_value(new_client, ASB100_REG_FAN_MIN(0));
|
|
data->fan_min[1] = asb100_read_value(new_client, ASB100_REG_FAN_MIN(1));
|
|
data->fan_min[2] = asb100_read_value(new_client, ASB100_REG_FAN_MIN(2));
|
|
|
|
/* Register sysfs hooks */
|
|
if ((err = sysfs_create_group(&new_client->dev.kobj, &asb100_group)))
|
|
goto ERROR3;
|
|
|
|
data->class_dev = hwmon_device_register(&new_client->dev);
|
|
if (IS_ERR(data->class_dev)) {
|
|
err = PTR_ERR(data->class_dev);
|
|
goto ERROR4;
|
|
}
|
|
|
|
return 0;
|
|
|
|
ERROR4:
|
|
sysfs_remove_group(&new_client->dev.kobj, &asb100_group);
|
|
ERROR3:
|
|
i2c_detach_client(data->lm75[1]);
|
|
i2c_detach_client(data->lm75[0]);
|
|
kfree(data->lm75[1]);
|
|
kfree(data->lm75[0]);
|
|
ERROR2:
|
|
i2c_detach_client(new_client);
|
|
ERROR1:
|
|
kfree(data);
|
|
ERROR0:
|
|
return err;
|
|
}
|
|
|
|
static int asb100_detach_client(struct i2c_client *client)
|
|
{
|
|
struct asb100_data *data = i2c_get_clientdata(client);
|
|
int err;
|
|
|
|
/* main client */
|
|
if (data) {
|
|
hwmon_device_unregister(data->class_dev);
|
|
sysfs_remove_group(&client->dev.kobj, &asb100_group);
|
|
}
|
|
|
|
if ((err = i2c_detach_client(client)))
|
|
return err;
|
|
|
|
/* main client */
|
|
if (data)
|
|
kfree(data);
|
|
|
|
/* subclient */
|
|
else
|
|
kfree(client);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* The SMBus locks itself, usually, but nothing may access the chip between
|
|
bank switches. */
|
|
static int asb100_read_value(struct i2c_client *client, u16 reg)
|
|
{
|
|
struct asb100_data *data = i2c_get_clientdata(client);
|
|
struct i2c_client *cl;
|
|
int res, bank;
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
bank = (reg >> 8) & 0x0f;
|
|
if (bank > 2)
|
|
/* switch banks */
|
|
i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank);
|
|
|
|
if (bank == 0 || bank > 2) {
|
|
res = i2c_smbus_read_byte_data(client, reg & 0xff);
|
|
} else {
|
|
/* switch to subclient */
|
|
cl = data->lm75[bank - 1];
|
|
|
|
/* convert from ISA to LM75 I2C addresses */
|
|
switch (reg & 0xff) {
|
|
case 0x50: /* TEMP */
|
|
res = swab16(i2c_smbus_read_word_data (cl, 0));
|
|
break;
|
|
case 0x52: /* CONFIG */
|
|
res = i2c_smbus_read_byte_data(cl, 1);
|
|
break;
|
|
case 0x53: /* HYST */
|
|
res = swab16(i2c_smbus_read_word_data (cl, 2));
|
|
break;
|
|
case 0x55: /* MAX */
|
|
default:
|
|
res = swab16(i2c_smbus_read_word_data (cl, 3));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (bank > 2)
|
|
i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0);
|
|
|
|
mutex_unlock(&data->lock);
|
|
|
|
return res;
|
|
}
|
|
|
|
static void asb100_write_value(struct i2c_client *client, u16 reg, u16 value)
|
|
{
|
|
struct asb100_data *data = i2c_get_clientdata(client);
|
|
struct i2c_client *cl;
|
|
int bank;
|
|
|
|
mutex_lock(&data->lock);
|
|
|
|
bank = (reg >> 8) & 0x0f;
|
|
if (bank > 2)
|
|
/* switch banks */
|
|
i2c_smbus_write_byte_data(client, ASB100_REG_BANK, bank);
|
|
|
|
if (bank == 0 || bank > 2) {
|
|
i2c_smbus_write_byte_data(client, reg & 0xff, value & 0xff);
|
|
} else {
|
|
/* switch to subclient */
|
|
cl = data->lm75[bank - 1];
|
|
|
|
/* convert from ISA to LM75 I2C addresses */
|
|
switch (reg & 0xff) {
|
|
case 0x52: /* CONFIG */
|
|
i2c_smbus_write_byte_data(cl, 1, value & 0xff);
|
|
break;
|
|
case 0x53: /* HYST */
|
|
i2c_smbus_write_word_data(cl, 2, swab16(value));
|
|
break;
|
|
case 0x55: /* MAX */
|
|
i2c_smbus_write_word_data(cl, 3, swab16(value));
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (bank > 2)
|
|
i2c_smbus_write_byte_data(client, ASB100_REG_BANK, 0);
|
|
|
|
mutex_unlock(&data->lock);
|
|
}
|
|
|
|
static void asb100_init_client(struct i2c_client *client)
|
|
{
|
|
struct asb100_data *data = i2c_get_clientdata(client);
|
|
int vid = 0;
|
|
|
|
vid = asb100_read_value(client, ASB100_REG_VID_FANDIV) & 0x0f;
|
|
vid |= (asb100_read_value(client, ASB100_REG_CHIPID) & 0x01) << 4;
|
|
data->vrm = vid_which_vrm();
|
|
vid = vid_from_reg(vid, data->vrm);
|
|
|
|
/* Start monitoring */
|
|
asb100_write_value(client, ASB100_REG_CONFIG,
|
|
(asb100_read_value(client, ASB100_REG_CONFIG) & 0xf7) | 0x01);
|
|
}
|
|
|
|
static struct asb100_data *asb100_update_device(struct device *dev)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
struct asb100_data *data = i2c_get_clientdata(client);
|
|
int i;
|
|
|
|
mutex_lock(&data->update_lock);
|
|
|
|
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|
|
|| !data->valid) {
|
|
|
|
dev_dbg(&client->dev, "starting device update...\n");
|
|
|
|
/* 7 voltage inputs */
|
|
for (i = 0; i < 7; i++) {
|
|
data->in[i] = asb100_read_value(client,
|
|
ASB100_REG_IN(i));
|
|
data->in_min[i] = asb100_read_value(client,
|
|
ASB100_REG_IN_MIN(i));
|
|
data->in_max[i] = asb100_read_value(client,
|
|
ASB100_REG_IN_MAX(i));
|
|
}
|
|
|
|
/* 3 fan inputs */
|
|
for (i = 0; i < 3; i++) {
|
|
data->fan[i] = asb100_read_value(client,
|
|
ASB100_REG_FAN(i));
|
|
data->fan_min[i] = asb100_read_value(client,
|
|
ASB100_REG_FAN_MIN(i));
|
|
}
|
|
|
|
/* 4 temperature inputs */
|
|
for (i = 1; i <= 4; i++) {
|
|
data->temp[i-1] = asb100_read_value(client,
|
|
ASB100_REG_TEMP(i));
|
|
data->temp_max[i-1] = asb100_read_value(client,
|
|
ASB100_REG_TEMP_MAX(i));
|
|
data->temp_hyst[i-1] = asb100_read_value(client,
|
|
ASB100_REG_TEMP_HYST(i));
|
|
}
|
|
|
|
/* VID and fan divisors */
|
|
i = asb100_read_value(client, ASB100_REG_VID_FANDIV);
|
|
data->vid = i & 0x0f;
|
|
data->vid |= (asb100_read_value(client,
|
|
ASB100_REG_CHIPID) & 0x01) << 4;
|
|
data->fan_div[0] = (i >> 4) & 0x03;
|
|
data->fan_div[1] = (i >> 6) & 0x03;
|
|
data->fan_div[2] = (asb100_read_value(client,
|
|
ASB100_REG_PIN) >> 6) & 0x03;
|
|
|
|
/* PWM */
|
|
data->pwm = asb100_read_value(client, ASB100_REG_PWM1);
|
|
|
|
/* alarms */
|
|
data->alarms = asb100_read_value(client, ASB100_REG_ALARM1) +
|
|
(asb100_read_value(client, ASB100_REG_ALARM2) << 8);
|
|
|
|
data->last_updated = jiffies;
|
|
data->valid = 1;
|
|
|
|
dev_dbg(&client->dev, "... device update complete\n");
|
|
}
|
|
|
|
mutex_unlock(&data->update_lock);
|
|
|
|
return data;
|
|
}
|
|
|
|
static int __init asb100_init(void)
|
|
{
|
|
return i2c_add_driver(&asb100_driver);
|
|
}
|
|
|
|
static void __exit asb100_exit(void)
|
|
{
|
|
i2c_del_driver(&asb100_driver);
|
|
}
|
|
|
|
MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>");
|
|
MODULE_DESCRIPTION("ASB100 Bach driver");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_init(asb100_init);
|
|
module_exit(asb100_exit);
|
|
|