11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 22a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * smsc47b397.c - Part of lm_sensors, Linux kernel modules 32a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * for hardware monitoring 42a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * 52a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * Supports the SMSC LPC47B397-NC Super-I/O chip. 62a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * 72a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * Author/Maintainer: Mark M. Hoffman <mhoffman@lightlink.com> 82a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * Copyright (C) 2004 Utilitek Systems, Inc. 92a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * 102a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * derived in part from smsc47m1.c: 112a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> 122a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * Copyright (C) 2004 Jean Delvare <khali@linux-fr.org> 132a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * 142a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * This program is free software; you can redistribute it and/or modify 152a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * it under the terms of the GNU General Public License as published by 162a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * the Free Software Foundation; either version 2 of the License, or 172a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * (at your option) any later version. 182a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * 192a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * This program is distributed in the hope that it will be useful, 202a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * but WITHOUT ANY WARRANTY; without even the implied warranty of 212a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 222a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * GNU General Public License for more details. 232a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * 242a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * You should have received a copy of the GNU General Public License 252a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * along with this program; if not, write to the Free Software 262a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 272a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck */ 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 29bf1a85eff87eeb0651b1c5b348d51206ec7c0ef5Joe Perches#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 30bf1a85eff87eeb0651b1c5b348d51206ec7c0ef5Joe Perches 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/ioport.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/jiffies.h> 35292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare#include <linux/platform_device.h> 36943b0830cebe4711354945ed3cb44e84152aaca0Mark M. Hoffman#include <linux/hwmon.h> 373659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare#include <linux/hwmon-sysfs.h> 38943b0830cebe4711354945ed3cb44e84152aaca0Mark M. Hoffman#include <linux/err.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 409a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar#include <linux/mutex.h> 41b9acb64a385c5b26fc392e0d58ac7b8e0a2cd812Jean Delvare#include <linux/acpi.h> 426055fae8aceee41471edfd1876e5617d16e028feH Hartley Sweeten#include <linux/io.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4467b671bceb4a8340a30929e9642620d99ed5ad76Jean Delvarestatic unsigned short force_id; 4567b671bceb4a8340a30929e9642620d99ed5ad76Jean Delvaremodule_param(force_id, ushort, 0); 4667b671bceb4a8340a30929e9642620d99ed5ad76Jean DelvareMODULE_PARM_DESC(force_id, "Override the detected device ID"); 4767b671bceb4a8340a30929e9642620d99ed5ad76Jean Delvare 48292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvarestatic struct platform_device *pdev; 49292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 50292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare#define DRVNAME "smsc47b397" 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Super-I/0 registers and commands */ 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define REG 0x2e /* The register to read/write */ 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VAL 0x2f /* The value to read/write */ 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void superio_outb(int reg, int val) 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(reg, REG); 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(val, VAL); 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline int superio_inb(int reg) 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(reg, REG); 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return inb(VAL); 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* select superio logical device */ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void superio_select(int ld) 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds superio_outb(0x07, ld); 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void superio_enter(void) 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(0x55, REG); 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline void superio_exit(void) 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds outb(0xAA, REG); 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SUPERIO_REG_DEVID 0x20 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SUPERIO_REG_DEVREV 0x21 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SUPERIO_REG_BASE_MSB 0x60 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SUPERIO_REG_BASE_LSB 0x61 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SUPERIO_REG_LD8 0x08 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SMSC_EXTENT 0x02 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 0 <= nr <= 3 */ 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic u8 smsc47b397_reg_temp[] = {0x25, 0x26, 0x27, 0x80}; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SMSC47B397_REG_TEMP(nr) (smsc47b397_reg_temp[(nr)]) 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 0 <= nr <= 3 */ 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SMSC47B397_REG_FAN_LSB(nr) (0x28 + 2 * (nr)) 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SMSC47B397_REG_FAN_MSB(nr) (0x29 + 2 * (nr)) 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct smsc47b397_data { 102292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare unsigned short addr; 103292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare const char *name; 1041beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones struct device *hwmon_dev; 1059a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar struct mutex lock; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1079a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar struct mutex update_lock; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long last_updated; /* in jiffies */ 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int valid; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* register values */ 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 fan[4]; 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 temp[4]; 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 116371f2e083b9b081adf68d04fba4978a27dc4e618Jean Delvarestatic int smsc47b397_read_value(struct smsc47b397_data *data, u8 reg) 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int res; 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1209a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar mutex_lock(&data->lock); 121292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare outb(reg, data->addr); 122292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare res = inb_p(data->addr + 1); 1239a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar mutex_unlock(&data->lock); 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return res; 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct smsc47b397_data *smsc47b397_update_device(struct device *dev) 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 129292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare struct smsc47b397_data *data = dev_get_drvdata(dev); 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1329a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar mutex_lock(&data->update_lock); 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 135292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare dev_dbg(dev, "starting device update...\n"); 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4 temperature inputs, 4 fan inputs */ 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < 4; i++) { 139292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare data->temp[i] = smsc47b397_read_value(data, 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SMSC47B397_REG_TEMP(i)); 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* must read LSB first */ 143292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare data->fan[i] = smsc47b397_read_value(data, 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SMSC47B397_REG_FAN_LSB(i)); 145292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare data->fan[i] |= smsc47b397_read_value(data, 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SMSC47B397_REG_FAN_MSB(i)) << 8; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data->last_updated = jiffies; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds data->valid = 1; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 152292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare dev_dbg(dev, "... device update complete\n"); 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1559a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar mutex_unlock(&data->update_lock); 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return data; 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1602a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck/* 1612a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * TEMP: 0.001C/bit (-128C to +127C) 1622a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * REG: 1C/bit, two's complement 1632a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int temp_from_reg(u8 reg) 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (s8)reg * 1000; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1693659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic ssize_t show_temp(struct device *dev, struct device_attribute 1703659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare *devattr, char *buf) 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1723659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct smsc47b397_data *data = smsc47b397_update_device(dev); 1743659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare return sprintf(buf, "%d\n", temp_from_reg(data->temp[attr->index])); 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1773659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); 1783659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); 1793659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); 1803659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1822a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck/* 1832a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * FAN: 1 RPM/bit 1842a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck * REG: count of 90kHz pulses / revolution 1852a52dd667d74a074ebb54d2eec84ca55a73834b9Guenter Roeck */ 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int fan_from_reg(u16 reg) 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 18890205c6cbb8fd9880bf798903a99f5b8903455e2Jean Delvare if (reg == 0 || reg == 0xffff) 18990205c6cbb8fd9880bf798903a99f5b8903455e2Jean Delvare return 0; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 90000 * 60 / reg; 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1933659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic ssize_t show_fan(struct device *dev, struct device_attribute 1943659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare *devattr, char *buf) 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1963659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); 1973659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare struct smsc47b397_data *data = smsc47b397_update_device(dev); 1983659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare return sprintf(buf, "%d\n", fan_from_reg(data->fan[attr->index])); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2003659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); 2013659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); 2023659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); 2033659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvarestatic SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 205292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvarestatic ssize_t show_name(struct device *dev, struct device_attribute 206292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare *devattr, char *buf) 207292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare{ 208292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare struct smsc47b397_data *data = dev_get_drvdata(dev); 209292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare return sprintf(buf, "%s\n", data->name); 210292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare} 211292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvarestatic DEVICE_ATTR(name, S_IRUGO, show_name, NULL); 212292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 213c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffmanstatic struct attribute *smsc47b397_attributes[] = { 2143659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare &sensor_dev_attr_temp1_input.dev_attr.attr, 2153659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare &sensor_dev_attr_temp2_input.dev_attr.attr, 2163659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare &sensor_dev_attr_temp3_input.dev_attr.attr, 2173659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare &sensor_dev_attr_temp4_input.dev_attr.attr, 2183659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare &sensor_dev_attr_fan1_input.dev_attr.attr, 2193659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare &sensor_dev_attr_fan2_input.dev_attr.attr, 2203659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare &sensor_dev_attr_fan3_input.dev_attr.attr, 2213659a0178f76d13174e8924416e5d6805ea9bad1Jean Delvare &sensor_dev_attr_fan4_input.dev_attr.attr, 222c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffman 223292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare &dev_attr_name.attr, 224c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffman NULL 225c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffman}; 226c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffman 227c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffmanstatic const struct attribute_group smsc47b397_group = { 228c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffman .attrs = smsc47b397_attributes, 229c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffman}; 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvarestatic int __devexit smsc47b397_remove(struct platform_device *pdev) 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 233292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare struct smsc47b397_data *data = platform_get_drvdata(pdev); 234292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare struct resource *res; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2361beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones hwmon_device_unregister(data->hwmon_dev); 237292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare sysfs_remove_group(&pdev->dev.kobj, &smsc47b397_group); 238292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare res = platform_get_resource(pdev, IORESOURCE_IO, 0); 239292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare release_region(res->start, SMSC_EXTENT); 240943b0830cebe4711354945ed3cb44e84152aaca0Mark M. Hoffman kfree(data); 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 245292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvarestatic int smsc47b397_probe(struct platform_device *pdev); 2462d8672c5a6ba0d3f1d8d3ad61ef67868941364f0Jean Delvare 247292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvarestatic struct platform_driver smsc47b397_driver = { 248cdaf79349c7d24e1d33acb6497849c9e956a33eaLaurent Riffard .driver = { 249872188420997f7f7c1b968fd9bce6578e4c3d45fJean Delvare .owner = THIS_MODULE, 250292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare .name = DRVNAME, 251cdaf79349c7d24e1d33acb6497849c9e956a33eaLaurent Riffard }, 252292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare .probe = smsc47b397_probe, 253292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare .remove = __devexit_p(smsc47b397_remove), 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 256292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvarestatic int __devinit smsc47b397_probe(struct platform_device *pdev) 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 258292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare struct device *dev = &pdev->dev; 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct smsc47b397_data *data; 260292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare struct resource *res; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err = 0; 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 263292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare res = platform_get_resource(pdev, IORESOURCE_IO, 0); 264292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare if (!request_region(res->start, SMSC_EXTENT, 265cdaf79349c7d24e1d33acb6497849c9e956a33eaLaurent Riffard smsc47b397_driver.driver.name)) { 266292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare dev_err(dev, "Region 0x%lx-0x%lx already in use!\n", 267292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare (unsigned long)res->start, 268292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare (unsigned long)res->start + SMSC_EXTENT - 1); 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EBUSY; 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 272371f2e083b9b081adf68d04fba4978a27dc4e618Jean Delvare data = kzalloc(sizeof(struct smsc47b397_data), GFP_KERNEL); 273371f2e083b9b081adf68d04fba4978a27dc4e618Jean Delvare if (!data) { 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -ENOMEM; 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto error_release; 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 278292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare data->addr = res->start; 279292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare data->name = "smsc47b397"; 2809a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar mutex_init(&data->lock); 2819a61bf6300533d3b64d7ff29adfec00e596de67dIngo Molnar mutex_init(&data->update_lock); 282292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare platform_set_drvdata(pdev, data); 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 284371f2e083b9b081adf68d04fba4978a27dc4e618Jean Delvare err = sysfs_create_group(&dev->kobj, &smsc47b397_group); 285371f2e083b9b081adf68d04fba4978a27dc4e618Jean Delvare if (err) 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto error_free; 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2881beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones data->hwmon_dev = hwmon_device_register(dev); 2891beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones if (IS_ERR(data->hwmon_dev)) { 2901beeffe43311f64df8dd0ab08ff6b1858c58363fTony Jones err = PTR_ERR(data->hwmon_dev); 291c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffman goto error_remove; 292943b0830cebe4711354945ed3cb44e84152aaca0Mark M. Hoffman } 293943b0830cebe4711354945ed3cb44e84152aaca0Mark M. Hoffman 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 296c1685f61b0a3110b701d09b84a9f9a3d4e9ef2e2Mark M. Hoffmanerror_remove: 297292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare sysfs_remove_group(&dev->kobj, &smsc47b397_group); 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserror_free: 2991f57ff89fee47a317e9e8ca63bf0f139802cc116Alexey Dobriyan kfree(data); 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldserror_release: 301292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare release_region(res->start, SMSC_EXTENT); 302292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare return err; 303292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare} 304292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 305292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvarestatic int __init smsc47b397_device_add(unsigned short address) 306292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare{ 307292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare struct resource res = { 308292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare .start = address, 309292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare .end = address + SMSC_EXTENT - 1, 310292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare .name = DRVNAME, 311292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare .flags = IORESOURCE_IO, 312292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare }; 313292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare int err; 314292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 315b9acb64a385c5b26fc392e0d58ac7b8e0a2cd812Jean Delvare err = acpi_check_resource_conflict(&res); 316b9acb64a385c5b26fc392e0d58ac7b8e0a2cd812Jean Delvare if (err) 317b9acb64a385c5b26fc392e0d58ac7b8e0a2cd812Jean Delvare goto exit; 318b9acb64a385c5b26fc392e0d58ac7b8e0a2cd812Jean Delvare 319292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare pdev = platform_device_alloc(DRVNAME, address); 320292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare if (!pdev) { 321292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare err = -ENOMEM; 322bf1a85eff87eeb0651b1c5b348d51206ec7c0ef5Joe Perches pr_err("Device allocation failed\n"); 323292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare goto exit; 324292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare } 325292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 326292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare err = platform_device_add_resources(pdev, &res, 1); 327292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare if (err) { 328bf1a85eff87eeb0651b1c5b348d51206ec7c0ef5Joe Perches pr_err("Device resource addition failed (%d)\n", err); 329292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare goto exit_device_put; 330292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare } 331292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 332292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare err = platform_device_add(pdev); 333292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare if (err) { 334bf1a85eff87eeb0651b1c5b348d51206ec7c0ef5Joe Perches pr_err("Device addition failed (%d)\n", err); 335292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare goto exit_device_put; 336292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare } 337292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 338292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare return 0; 339292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 340292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvareexit_device_put: 341292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare platform_device_put(pdev); 342292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvareexit: 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3468528e07edfc6ac5a793509f305b9c3c4fb3672c0Guenter Roeckstatic int __init smsc47b397_find(void) 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 id, rev; 349809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley char *name; 3508528e07edfc6ac5a793509f305b9c3c4fb3672c0Guenter Roeck unsigned short addr; 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds superio_enter(); 35367b671bceb4a8340a30929e9642620d99ed5ad76Jean Delvare id = force_id ? force_id : superio_inb(SUPERIO_REG_DEVID); 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 355371f2e083b9b081adf68d04fba4978a27dc4e618Jean Delvare switch (id) { 356809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley case 0x81: 357809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley name = "SCH5307-NS"; 358809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley break; 359809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley case 0x6f: 360809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley name = "LPC47B397-NC"; 361809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley break; 362809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley case 0x85: 363809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley case 0x8c: 364809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley name = "SCH5317"; 365809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley break; 366809307768cb177621b8f45f87fa840993ca4cb60Craig Kelley default: 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds superio_exit(); 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENODEV; 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rev = superio_inb(SUPERIO_REG_DEVREV); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds superio_select(SUPERIO_REG_LD8); 3748528e07edfc6ac5a793509f305b9c3c4fb3672c0Guenter Roeck addr = (superio_inb(SUPERIO_REG_BASE_MSB) << 8) 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | superio_inb(SUPERIO_REG_BASE_LSB); 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 377bf1a85eff87eeb0651b1c5b348d51206ec7c0ef5Joe Perches pr_info("found SMSC %s (base address 0x%04x, revision %u)\n", 3788528e07edfc6ac5a793509f305b9c3c4fb3672c0Guenter Roeck name, addr, rev); 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds superio_exit(); 3818528e07edfc6ac5a793509f305b9c3c4fb3672c0Guenter Roeck return addr; 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init smsc47b397_init(void) 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 386292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare unsigned short address; 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3898528e07edfc6ac5a793509f305b9c3c4fb3672c0Guenter Roeck ret = smsc47b397_find(); 3908528e07edfc6ac5a793509f305b9c3c4fb3672c0Guenter Roeck if (ret < 0) 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 3928528e07edfc6ac5a793509f305b9c3c4fb3672c0Guenter Roeck address = ret; 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 394292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare ret = platform_driver_register(&smsc47b397_driver); 395292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare if (ret) 396292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare goto exit; 397292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 398292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare /* Sets global pdev as a side effect */ 399292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare ret = smsc47b397_device_add(address); 400292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare if (ret) 401292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare goto exit_driver; 402292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 403292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare return 0; 404292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare 405292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvareexit_driver: 406292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare platform_driver_unregister(&smsc47b397_driver); 407292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvareexit: 408292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare return ret; 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit smsc47b397_exit(void) 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 413292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare platform_device_unregister(pdev); 414292fc1a5ff44d477ff335a343a48d2b67bbc70e3Jean Delvare platform_driver_unregister(&smsc47b397_driver); 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>"); 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("SMSC LPC47B397 driver"); 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(smsc47b397_init); 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(smsc47b397_exit); 423