18d5d45fbSJean Delvare /* 28d5d45fbSJean Delvare * lm87.c 38d5d45fbSJean Delvare * 48d5d45fbSJean Delvare * Copyright (C) 2000 Frodo Looijaard <frodol@dds.nl> 58d5d45fbSJean Delvare * Philip Edelbrock <phil@netroedge.com> 68d5d45fbSJean Delvare * Stephen Rousset <stephen.rousset@rocketlogix.com> 78d5d45fbSJean Delvare * Dan Eaton <dan.eaton@rocketlogix.com> 8a888420aSJean Delvare * Copyright (C) 2004-2008 Jean Delvare <khali@linux-fr.org> 98d5d45fbSJean Delvare * 108d5d45fbSJean Delvare * Original port to Linux 2.6 by Jeff Oliver. 118d5d45fbSJean Delvare * 128d5d45fbSJean Delvare * The LM87 is a sensor chip made by National Semiconductor. It monitors up 138d5d45fbSJean Delvare * to 8 voltages (including its own power source), up to three temperatures 148d5d45fbSJean Delvare * (its own plus up to two external ones) and up to two fans. The default 158d5d45fbSJean Delvare * configuration is 6 voltages, two temperatures and two fans (see below). 168d5d45fbSJean Delvare * Voltages are scaled internally with ratios such that the nominal value of 178d5d45fbSJean Delvare * each voltage correspond to a register value of 192 (which means a 188d5d45fbSJean Delvare * resolution of about 0.5% of the nominal value). Temperature values are 198d5d45fbSJean Delvare * reported with a 1 deg resolution and a 3-4 deg accuracy. Complete 208d5d45fbSJean Delvare * datasheet can be obtained from National's website at: 218d5d45fbSJean Delvare * http://www.national.com/pf/LM/LM87.html 228d5d45fbSJean Delvare * 238d5d45fbSJean Delvare * Some functions share pins, so not all functions are available at the same 248d5d45fbSJean Delvare * time. Which are depends on the hardware setup. This driver assumes that 258d5d45fbSJean Delvare * the BIOS configured the chip correctly. In that respect, it differs from 268d5d45fbSJean Delvare * the original driver (from lm_sensors for Linux 2.4), which would force the 278d5d45fbSJean Delvare * LM87 to an arbitrary, compile-time chosen mode, regardless of the actual 288d5d45fbSJean Delvare * chipset wiring. 298d5d45fbSJean Delvare * For reference, here is the list of exclusive functions: 308d5d45fbSJean Delvare * - in0+in5 (default) or temp3 318d5d45fbSJean Delvare * - fan1 (default) or in6 328d5d45fbSJean Delvare * - fan2 (default) or in7 338d5d45fbSJean Delvare * - VID lines (default) or IRQ lines (not handled by this driver) 348d5d45fbSJean Delvare * 358d5d45fbSJean Delvare * The LM87 additionally features an analog output, supposedly usable to 368d5d45fbSJean Delvare * control the speed of a fan. All new chips use pulse width modulation 378d5d45fbSJean Delvare * instead. The LM87 is the only hardware monitoring chipset I know of 388d5d45fbSJean Delvare * which uses amplitude modulation. Be careful when using this feature. 398d5d45fbSJean Delvare * 40c7fa3737SJean Delvare * This driver also supports the ADM1024, a sensor chip made by Analog 41c7fa3737SJean Delvare * Devices. That chip is fully compatible with the LM87. Complete 42c7fa3737SJean Delvare * datasheet can be obtained from Analog's website at: 43c7fa3737SJean Delvare * http://www.analog.com/en/prod/0,2877,ADM1024,00.html 44c7fa3737SJean Delvare * 458d5d45fbSJean Delvare * This program is free software; you can redistribute it and/or modify 468d5d45fbSJean Delvare * it under the terms of the GNU General Public License as published by 478d5d45fbSJean Delvare * the Free Software Foundation; either version 2 of the License, or 488d5d45fbSJean Delvare * (at your option) any later version. 498d5d45fbSJean Delvare * 508d5d45fbSJean Delvare * This program is distributed in the hope that it will be useful, 518d5d45fbSJean Delvare * but WITHOUT ANY WARRANTY; without even the implied warranty of 528d5d45fbSJean Delvare * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 538d5d45fbSJean Delvare * GNU General Public License for more details. 548d5d45fbSJean Delvare * 558d5d45fbSJean Delvare * You should have received a copy of the GNU General Public License 568d5d45fbSJean Delvare * along with this program; if not, write to the Free Software 578d5d45fbSJean Delvare * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 588d5d45fbSJean Delvare */ 598d5d45fbSJean Delvare 608d5d45fbSJean Delvare #include <linux/module.h> 618d5d45fbSJean Delvare #include <linux/init.h> 628d5d45fbSJean Delvare #include <linux/slab.h> 638d5d45fbSJean Delvare #include <linux/jiffies.h> 648d5d45fbSJean Delvare #include <linux/i2c.h> 65943b0830SMark M. Hoffman #include <linux/hwmon.h> 66c2803b98SJean Delvare #include <linux/hwmon-sysfs.h> 67303760b4SJean Delvare #include <linux/hwmon-vid.h> 68943b0830SMark M. Hoffman #include <linux/err.h> 699a61bf63SIngo Molnar #include <linux/mutex.h> 708d5d45fbSJean Delvare 718d5d45fbSJean Delvare /* 728d5d45fbSJean Delvare * Addresses to scan 738d5d45fbSJean Delvare * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. 748d5d45fbSJean Delvare */ 758d5d45fbSJean Delvare 7625e9c86dSMark M. Hoffman static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 778d5d45fbSJean Delvare 788d5d45fbSJean Delvare /* 798d5d45fbSJean Delvare * Insmod parameters 808d5d45fbSJean Delvare */ 818d5d45fbSJean Delvare 82c7fa3737SJean Delvare I2C_CLIENT_INSMOD_2(lm87, adm1024); 838d5d45fbSJean Delvare 848d5d45fbSJean Delvare /* 858d5d45fbSJean Delvare * The LM87 registers 868d5d45fbSJean Delvare */ 878d5d45fbSJean Delvare 888d5d45fbSJean Delvare /* nr in 0..5 */ 898d5d45fbSJean Delvare #define LM87_REG_IN(nr) (0x20 + (nr)) 908d5d45fbSJean Delvare #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) 918d5d45fbSJean Delvare #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) 928d5d45fbSJean Delvare /* nr in 0..1 */ 938d5d45fbSJean Delvare #define LM87_REG_AIN(nr) (0x28 + (nr)) 948d5d45fbSJean Delvare #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) 958d5d45fbSJean Delvare #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) 968d5d45fbSJean Delvare 978d5d45fbSJean Delvare static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; 988d5d45fbSJean Delvare static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; 998d5d45fbSJean Delvare static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; 1008d5d45fbSJean Delvare 1018d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT_LOCK 0x13 1028d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 1038d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT 0x17 1048d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT 0x18 1058d5d45fbSJean Delvare 1068d5d45fbSJean Delvare /* nr in 0..1 */ 1078d5d45fbSJean Delvare #define LM87_REG_FAN(nr) (0x28 + (nr)) 1088d5d45fbSJean Delvare #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) 1098d5d45fbSJean Delvare #define LM87_REG_AOUT 0x19 1108d5d45fbSJean Delvare 1118d5d45fbSJean Delvare #define LM87_REG_CONFIG 0x40 1128d5d45fbSJean Delvare #define LM87_REG_CHANNEL_MODE 0x16 1138d5d45fbSJean Delvare #define LM87_REG_VID_FAN_DIV 0x47 1148d5d45fbSJean Delvare #define LM87_REG_VID4 0x49 1158d5d45fbSJean Delvare 1168d5d45fbSJean Delvare #define LM87_REG_ALARMS1 0x41 1178d5d45fbSJean Delvare #define LM87_REG_ALARMS2 0x42 1188d5d45fbSJean Delvare 1198d5d45fbSJean Delvare #define LM87_REG_COMPANY_ID 0x3E 1208d5d45fbSJean Delvare #define LM87_REG_REVISION 0x3F 1218d5d45fbSJean Delvare 1228d5d45fbSJean Delvare /* 1238d5d45fbSJean Delvare * Conversions and various macros 1248d5d45fbSJean Delvare * The LM87 uses signed 8-bit values for temperatures. 1258d5d45fbSJean Delvare */ 1268d5d45fbSJean Delvare 1278d5d45fbSJean Delvare #define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192) 1288d5d45fbSJean Delvare #define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \ 1298d5d45fbSJean Delvare (val) * 192 >= (scale) * 255 ? 255 : \ 1308d5d45fbSJean Delvare ((val) * 192 + (scale)/2) / (scale)) 1318d5d45fbSJean Delvare 1328d5d45fbSJean Delvare #define TEMP_FROM_REG(reg) ((reg) * 1000) 1338d5d45fbSJean Delvare #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ 1348d5d45fbSJean Delvare (val) >= 126500 ? 127 : \ 1358d5d45fbSJean Delvare (((val) < 0 ? (val)-500 : (val)+500) / 1000)) 1368d5d45fbSJean Delvare 1378d5d45fbSJean Delvare #define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \ 138b965d4b7SJean Delvare (1350000 + (reg)*(div) / 2) / ((reg)*(div))) 1398d5d45fbSJean Delvare #define FAN_TO_REG(val,div) ((val)*(div) * 255 <= 1350000 ? 255 : \ 1408d5d45fbSJean Delvare (1350000 + (val)*(div) / 2) / ((val)*(div))) 1418d5d45fbSJean Delvare 1428d5d45fbSJean Delvare #define FAN_DIV_FROM_REG(reg) (1 << (reg)) 1438d5d45fbSJean Delvare 1448d5d45fbSJean Delvare /* analog out is 9.80mV/LSB */ 1458d5d45fbSJean Delvare #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) 1468d5d45fbSJean Delvare #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ 1478d5d45fbSJean Delvare (val) >= 2500 ? 255 : \ 1488d5d45fbSJean Delvare ((val) * 10 + 49) / 98) 1498d5d45fbSJean Delvare 1508d5d45fbSJean Delvare /* nr in 0..1 */ 1518d5d45fbSJean Delvare #define CHAN_NO_FAN(nr) (1 << (nr)) 1528d5d45fbSJean Delvare #define CHAN_TEMP3 (1 << 2) 1538d5d45fbSJean Delvare #define CHAN_VCC_5V (1 << 3) 154889af3d5SJean Delvare #define CHAN_NO_VID (1 << 7) 1558d5d45fbSJean Delvare 1568d5d45fbSJean Delvare /* 1578d5d45fbSJean Delvare * Functions declaration 1588d5d45fbSJean Delvare */ 1598d5d45fbSJean Delvare 160a888420aSJean Delvare static int lm87_probe(struct i2c_client *client, 161a888420aSJean Delvare const struct i2c_device_id *id); 162a888420aSJean Delvare static int lm87_detect(struct i2c_client *new_client, int kind, 163a888420aSJean Delvare struct i2c_board_info *info); 1648d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client); 165a888420aSJean Delvare static int lm87_remove(struct i2c_client *client); 1668d5d45fbSJean Delvare static struct lm87_data *lm87_update_device(struct device *dev); 1678d5d45fbSJean Delvare 1688d5d45fbSJean Delvare /* 1698d5d45fbSJean Delvare * Driver data (common to all clients) 1708d5d45fbSJean Delvare */ 1718d5d45fbSJean Delvare 172a888420aSJean Delvare static const struct i2c_device_id lm87_id[] = { 173a888420aSJean Delvare { "lm87", lm87 }, 174a888420aSJean Delvare { "adm1024", adm1024 }, 175a888420aSJean Delvare { } 176a888420aSJean Delvare }; 177a888420aSJean Delvare MODULE_DEVICE_TABLE(i2c, lm87_id); 178a888420aSJean Delvare 1798d5d45fbSJean Delvare static struct i2c_driver lm87_driver = { 180a888420aSJean Delvare .class = I2C_CLASS_HWMON, 181cdaf7934SLaurent Riffard .driver = { 1828d5d45fbSJean Delvare .name = "lm87", 183cdaf7934SLaurent Riffard }, 184a888420aSJean Delvare .probe = lm87_probe, 185a888420aSJean Delvare .remove = lm87_remove, 186a888420aSJean Delvare .id_table = lm87_id, 187a888420aSJean Delvare .detect = lm87_detect, 188a888420aSJean Delvare .address_data = &addr_data, 1898d5d45fbSJean Delvare }; 1908d5d45fbSJean Delvare 1918d5d45fbSJean Delvare /* 1928d5d45fbSJean Delvare * Client data (each client gets its own) 1938d5d45fbSJean Delvare */ 1948d5d45fbSJean Delvare 1958d5d45fbSJean Delvare struct lm87_data { 1961beeffe4STony Jones struct device *hwmon_dev; 1979a61bf63SIngo Molnar struct mutex update_lock; 1988d5d45fbSJean Delvare char valid; /* zero until following fields are valid */ 1998d5d45fbSJean Delvare unsigned long last_updated; /* In jiffies */ 2008d5d45fbSJean Delvare 2018d5d45fbSJean Delvare u8 channel; /* register value */ 2028d5d45fbSJean Delvare 2038d5d45fbSJean Delvare u8 in[8]; /* register value */ 2048d5d45fbSJean Delvare u8 in_max[8]; /* register value */ 2058d5d45fbSJean Delvare u8 in_min[8]; /* register value */ 2068d5d45fbSJean Delvare u16 in_scale[8]; 2078d5d45fbSJean Delvare 2088d5d45fbSJean Delvare s8 temp[3]; /* register value */ 2098d5d45fbSJean Delvare s8 temp_high[3]; /* register value */ 2108d5d45fbSJean Delvare s8 temp_low[3]; /* register value */ 2118d5d45fbSJean Delvare s8 temp_crit_int; /* min of two register values */ 2128d5d45fbSJean Delvare s8 temp_crit_ext; /* min of two register values */ 2138d5d45fbSJean Delvare 2148d5d45fbSJean Delvare u8 fan[2]; /* register value */ 2158d5d45fbSJean Delvare u8 fan_min[2]; /* register value */ 2168d5d45fbSJean Delvare u8 fan_div[2]; /* register value, shifted right */ 2178d5d45fbSJean Delvare u8 aout; /* register value */ 2188d5d45fbSJean Delvare 2198d5d45fbSJean Delvare u16 alarms; /* register values, combined */ 2208d5d45fbSJean Delvare u8 vid; /* register values, combined */ 2218d5d45fbSJean Delvare u8 vrm; 2228d5d45fbSJean Delvare }; 2238d5d45fbSJean Delvare 2248d5d45fbSJean Delvare /* 2258d5d45fbSJean Delvare * Sysfs stuff 2268d5d45fbSJean Delvare */ 2278d5d45fbSJean Delvare 2288d5d45fbSJean Delvare static inline int lm87_read_value(struct i2c_client *client, u8 reg) 2298d5d45fbSJean Delvare { 2308d5d45fbSJean Delvare return i2c_smbus_read_byte_data(client, reg); 2318d5d45fbSJean Delvare } 2328d5d45fbSJean Delvare 2338d5d45fbSJean Delvare static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) 2348d5d45fbSJean Delvare { 2358d5d45fbSJean Delvare return i2c_smbus_write_byte_data(client, reg, value); 2368d5d45fbSJean Delvare } 2378d5d45fbSJean Delvare 2388d5d45fbSJean Delvare #define show_in(offset) \ 2398d5d45fbSJean Delvare static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 2408d5d45fbSJean Delvare { \ 2418d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2428d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \ 2438d5d45fbSJean Delvare data->in_scale[offset])); \ 2448d5d45fbSJean Delvare } \ 2458d5d45fbSJean Delvare static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ 2468d5d45fbSJean Delvare { \ 2478d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2488d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \ 2498d5d45fbSJean Delvare data->in_scale[offset])); \ 2508d5d45fbSJean Delvare } \ 2518d5d45fbSJean Delvare static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \ 2528d5d45fbSJean Delvare { \ 2538d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2548d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \ 2558d5d45fbSJean Delvare data->in_scale[offset])); \ 2568d5d45fbSJean Delvare } \ 2578d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 2588d5d45fbSJean Delvare show_in##offset##_input, NULL); 2598d5d45fbSJean Delvare show_in(0); 2608d5d45fbSJean Delvare show_in(1); 2618d5d45fbSJean Delvare show_in(2); 2628d5d45fbSJean Delvare show_in(3); 2638d5d45fbSJean Delvare show_in(4); 2648d5d45fbSJean Delvare show_in(5); 2658d5d45fbSJean Delvare show_in(6); 2668d5d45fbSJean Delvare show_in(7); 2678d5d45fbSJean Delvare 2688d5d45fbSJean Delvare static void set_in_min(struct device *dev, const char *buf, int nr) 2698d5d45fbSJean Delvare { 2708d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 2718d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2728d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 2738d5d45fbSJean Delvare 2749a61bf63SIngo Molnar mutex_lock(&data->update_lock); 2758d5d45fbSJean Delvare data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); 2768d5d45fbSJean Delvare lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) : 2778d5d45fbSJean Delvare LM87_REG_AIN_MIN(nr-6), data->in_min[nr]); 2789a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 2798d5d45fbSJean Delvare } 2808d5d45fbSJean Delvare 2818d5d45fbSJean Delvare static void set_in_max(struct device *dev, const char *buf, int nr) 2828d5d45fbSJean Delvare { 2838d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 2848d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2858d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 2868d5d45fbSJean Delvare 2879a61bf63SIngo Molnar mutex_lock(&data->update_lock); 2888d5d45fbSJean Delvare data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); 2898d5d45fbSJean Delvare lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) : 2908d5d45fbSJean Delvare LM87_REG_AIN_MAX(nr-6), data->in_max[nr]); 2919a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 2928d5d45fbSJean Delvare } 2938d5d45fbSJean Delvare 2948d5d45fbSJean Delvare #define set_in(offset) \ 2958d5d45fbSJean Delvare static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, \ 2968d5d45fbSJean Delvare const char *buf, size_t count) \ 2978d5d45fbSJean Delvare { \ 2988d5d45fbSJean Delvare set_in_min(dev, buf, offset); \ 2998d5d45fbSJean Delvare return count; \ 3008d5d45fbSJean Delvare } \ 3018d5d45fbSJean Delvare static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, \ 3028d5d45fbSJean Delvare const char *buf, size_t count) \ 3038d5d45fbSJean Delvare { \ 3048d5d45fbSJean Delvare set_in_max(dev, buf, offset); \ 3058d5d45fbSJean Delvare return count; \ 3068d5d45fbSJean Delvare } \ 3078d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 3088d5d45fbSJean Delvare show_in##offset##_min, set_in##offset##_min); \ 3098d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 3108d5d45fbSJean Delvare show_in##offset##_max, set_in##offset##_max); 3118d5d45fbSJean Delvare set_in(0); 3128d5d45fbSJean Delvare set_in(1); 3138d5d45fbSJean Delvare set_in(2); 3148d5d45fbSJean Delvare set_in(3); 3158d5d45fbSJean Delvare set_in(4); 3168d5d45fbSJean Delvare set_in(5); 3178d5d45fbSJean Delvare set_in(6); 3188d5d45fbSJean Delvare set_in(7); 3198d5d45fbSJean Delvare 3208d5d45fbSJean Delvare #define show_temp(offset) \ 3218d5d45fbSJean Delvare static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 3228d5d45fbSJean Delvare { \ 3238d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3248d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \ 3258d5d45fbSJean Delvare } \ 3268d5d45fbSJean Delvare static ssize_t show_temp##offset##_low(struct device *dev, struct device_attribute *attr, char *buf) \ 3278d5d45fbSJean Delvare { \ 3288d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3298d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[offset-1])); \ 3308d5d45fbSJean Delvare } \ 3318d5d45fbSJean Delvare static ssize_t show_temp##offset##_high(struct device *dev, struct device_attribute *attr, char *buf) \ 3328d5d45fbSJean Delvare { \ 3338d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3348d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[offset-1])); \ 3358d5d45fbSJean Delvare }\ 3368d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 3378d5d45fbSJean Delvare show_temp##offset##_input, NULL); 3388d5d45fbSJean Delvare show_temp(1); 3398d5d45fbSJean Delvare show_temp(2); 3408d5d45fbSJean Delvare show_temp(3); 3418d5d45fbSJean Delvare 3428d5d45fbSJean Delvare static void set_temp_low(struct device *dev, const char *buf, int nr) 3438d5d45fbSJean Delvare { 3448d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3458d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3468d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 3478d5d45fbSJean Delvare 3489a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3498d5d45fbSJean Delvare data->temp_low[nr] = TEMP_TO_REG(val); 3508d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); 3519a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 3528d5d45fbSJean Delvare } 3538d5d45fbSJean Delvare 3548d5d45fbSJean Delvare static void set_temp_high(struct device *dev, const char *buf, int nr) 3558d5d45fbSJean Delvare { 3568d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3578d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3588d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 3598d5d45fbSJean Delvare 3609a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3618d5d45fbSJean Delvare data->temp_high[nr] = TEMP_TO_REG(val); 3628d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); 3639a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 3648d5d45fbSJean Delvare } 3658d5d45fbSJean Delvare 3668d5d45fbSJean Delvare #define set_temp(offset) \ 3678d5d45fbSJean Delvare static ssize_t set_temp##offset##_low(struct device *dev, struct device_attribute *attr, \ 3688d5d45fbSJean Delvare const char *buf, size_t count) \ 3698d5d45fbSJean Delvare { \ 3708d5d45fbSJean Delvare set_temp_low(dev, buf, offset-1); \ 3718d5d45fbSJean Delvare return count; \ 3728d5d45fbSJean Delvare } \ 3738d5d45fbSJean Delvare static ssize_t set_temp##offset##_high(struct device *dev, struct device_attribute *attr, \ 3748d5d45fbSJean Delvare const char *buf, size_t count) \ 3758d5d45fbSJean Delvare { \ 3768d5d45fbSJean Delvare set_temp_high(dev, buf, offset-1); \ 3778d5d45fbSJean Delvare return count; \ 3788d5d45fbSJean Delvare } \ 3798d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 3808d5d45fbSJean Delvare show_temp##offset##_high, set_temp##offset##_high); \ 3818d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 3828d5d45fbSJean Delvare show_temp##offset##_low, set_temp##offset##_low); 3838d5d45fbSJean Delvare set_temp(1); 3848d5d45fbSJean Delvare set_temp(2); 3858d5d45fbSJean Delvare set_temp(3); 3868d5d45fbSJean Delvare 3878d5d45fbSJean Delvare static ssize_t show_temp_crit_int(struct device *dev, struct device_attribute *attr, char *buf) 3888d5d45fbSJean Delvare { 3898d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3908d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); 3918d5d45fbSJean Delvare } 3928d5d45fbSJean Delvare 3938d5d45fbSJean Delvare static ssize_t show_temp_crit_ext(struct device *dev, struct device_attribute *attr, char *buf) 3948d5d45fbSJean Delvare { 3958d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3968d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); 3978d5d45fbSJean Delvare } 3988d5d45fbSJean Delvare 3998d5d45fbSJean Delvare static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); 4008d5d45fbSJean Delvare static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); 4018d5d45fbSJean Delvare static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); 4028d5d45fbSJean Delvare 4038d5d45fbSJean Delvare #define show_fan(offset) \ 4048d5d45fbSJean Delvare static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 4058d5d45fbSJean Delvare { \ 4068d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 4078d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset-1], \ 4088d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ 4098d5d45fbSJean Delvare } \ 4108d5d45fbSJean Delvare static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ 4118d5d45fbSJean Delvare { \ 4128d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 4138d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset-1], \ 4148d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ 4158d5d45fbSJean Delvare } \ 4168d5d45fbSJean Delvare static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \ 4178d5d45fbSJean Delvare { \ 4188d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 4198d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[offset-1])); \ 4208d5d45fbSJean Delvare } \ 4218d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 4228d5d45fbSJean Delvare show_fan##offset##_input, NULL); 4238d5d45fbSJean Delvare show_fan(1); 4248d5d45fbSJean Delvare show_fan(2); 4258d5d45fbSJean Delvare 4268d5d45fbSJean Delvare static void set_fan_min(struct device *dev, const char *buf, int nr) 4278d5d45fbSJean Delvare { 4288d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4298d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4308d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 4318d5d45fbSJean Delvare 4329a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4338d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(val, 4348d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4358d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); 4369a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4378d5d45fbSJean Delvare } 4388d5d45fbSJean Delvare 4398d5d45fbSJean Delvare /* Note: we save and restore the fan minimum here, because its value is 4408d5d45fbSJean Delvare determined in part by the fan clock divider. This follows the principle 441d6e05edcSAndreas Mohr of least surprise; the user doesn't expect the fan minimum to change just 4428d5d45fbSJean Delvare because the divider changed. */ 4438d5d45fbSJean Delvare static ssize_t set_fan_div(struct device *dev, const char *buf, 4448d5d45fbSJean Delvare size_t count, int nr) 4458d5d45fbSJean Delvare { 4468d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4478d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4488d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 4498d5d45fbSJean Delvare unsigned long min; 4508d5d45fbSJean Delvare u8 reg; 4518d5d45fbSJean Delvare 4529a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4538d5d45fbSJean Delvare min = FAN_FROM_REG(data->fan_min[nr], 4548d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4558d5d45fbSJean Delvare 4568d5d45fbSJean Delvare switch (val) { 4578d5d45fbSJean Delvare case 1: data->fan_div[nr] = 0; break; 4588d5d45fbSJean Delvare case 2: data->fan_div[nr] = 1; break; 4598d5d45fbSJean Delvare case 4: data->fan_div[nr] = 2; break; 4608d5d45fbSJean Delvare case 8: data->fan_div[nr] = 3; break; 4618d5d45fbSJean Delvare default: 4629a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4638d5d45fbSJean Delvare return -EINVAL; 4648d5d45fbSJean Delvare } 4658d5d45fbSJean Delvare 4668d5d45fbSJean Delvare reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 4678d5d45fbSJean Delvare switch (nr) { 4688d5d45fbSJean Delvare case 0: 4698d5d45fbSJean Delvare reg = (reg & 0xCF) | (data->fan_div[0] << 4); 4708d5d45fbSJean Delvare break; 4718d5d45fbSJean Delvare case 1: 4728d5d45fbSJean Delvare reg = (reg & 0x3F) | (data->fan_div[1] << 6); 4738d5d45fbSJean Delvare break; 4748d5d45fbSJean Delvare } 4758d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); 4768d5d45fbSJean Delvare 4778d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(min, val); 4788d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), 4798d5d45fbSJean Delvare data->fan_min[nr]); 4809a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4818d5d45fbSJean Delvare 4828d5d45fbSJean Delvare return count; 4838d5d45fbSJean Delvare } 4848d5d45fbSJean Delvare 4858d5d45fbSJean Delvare #define set_fan(offset) \ 4868d5d45fbSJean Delvare static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \ 4878d5d45fbSJean Delvare size_t count) \ 4888d5d45fbSJean Delvare { \ 4898d5d45fbSJean Delvare set_fan_min(dev, buf, offset-1); \ 4908d5d45fbSJean Delvare return count; \ 4918d5d45fbSJean Delvare } \ 4928d5d45fbSJean Delvare static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \ 4938d5d45fbSJean Delvare size_t count) \ 4948d5d45fbSJean Delvare { \ 4958d5d45fbSJean Delvare return set_fan_div(dev, buf, count, offset-1); \ 4968d5d45fbSJean Delvare } \ 4978d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 4988d5d45fbSJean Delvare show_fan##offset##_min, set_fan##offset##_min); \ 4998d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 5008d5d45fbSJean Delvare show_fan##offset##_div, set_fan##offset##_div); 5018d5d45fbSJean Delvare set_fan(1); 5028d5d45fbSJean Delvare set_fan(2); 5038d5d45fbSJean Delvare 5048d5d45fbSJean Delvare static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) 5058d5d45fbSJean Delvare { 5068d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5078d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->alarms); 5088d5d45fbSJean Delvare } 5098d5d45fbSJean Delvare static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 5108d5d45fbSJean Delvare 5118d5d45fbSJean Delvare static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) 5128d5d45fbSJean Delvare { 5138d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5148d5d45fbSJean Delvare return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 5158d5d45fbSJean Delvare } 5168d5d45fbSJean Delvare static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); 5178d5d45fbSJean Delvare 5188d5d45fbSJean Delvare static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf) 5198d5d45fbSJean Delvare { 52090d6619aSJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 5218d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->vrm); 5228d5d45fbSJean Delvare } 5238d5d45fbSJean Delvare static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 5248d5d45fbSJean Delvare { 5258f74efe8SJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 5268d5d45fbSJean Delvare data->vrm = simple_strtoul(buf, NULL, 10); 5278d5d45fbSJean Delvare return count; 5288d5d45fbSJean Delvare } 5298d5d45fbSJean Delvare static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); 5308d5d45fbSJean Delvare 5318d5d45fbSJean Delvare static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf) 5328d5d45fbSJean Delvare { 5338d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5348d5d45fbSJean Delvare return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); 5358d5d45fbSJean Delvare } 5368d5d45fbSJean Delvare static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 5378d5d45fbSJean Delvare { 5388d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 5398d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5408d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 5418d5d45fbSJean Delvare 5429a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5438d5d45fbSJean Delvare data->aout = AOUT_TO_REG(val); 5448d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AOUT, data->aout); 5459a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5468d5d45fbSJean Delvare return count; 5478d5d45fbSJean Delvare } 5488d5d45fbSJean Delvare static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); 5498d5d45fbSJean Delvare 550c2803b98SJean Delvare static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 551c2803b98SJean Delvare char *buf) 552c2803b98SJean Delvare { 553c2803b98SJean Delvare struct lm87_data *data = lm87_update_device(dev); 554c2803b98SJean Delvare int bitnr = to_sensor_dev_attr(attr)->index; 555c2803b98SJean Delvare return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 556c2803b98SJean Delvare } 557c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 558c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 559c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 560c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 561c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 562c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); 563c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); 564c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); 565c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 566c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 567c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); 568c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); 569c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); 570c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); 571c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 572c2803b98SJean Delvare 5738d5d45fbSJean Delvare /* 5748d5d45fbSJean Delvare * Real code 5758d5d45fbSJean Delvare */ 5768d5d45fbSJean Delvare 5770501a381SMark M. Hoffman static struct attribute *lm87_attributes[] = { 5780501a381SMark M. Hoffman &dev_attr_in1_input.attr, 5790501a381SMark M. Hoffman &dev_attr_in1_min.attr, 5800501a381SMark M. Hoffman &dev_attr_in1_max.attr, 581c2803b98SJean Delvare &sensor_dev_attr_in1_alarm.dev_attr.attr, 5820501a381SMark M. Hoffman &dev_attr_in2_input.attr, 5830501a381SMark M. Hoffman &dev_attr_in2_min.attr, 5840501a381SMark M. Hoffman &dev_attr_in2_max.attr, 585c2803b98SJean Delvare &sensor_dev_attr_in2_alarm.dev_attr.attr, 5860501a381SMark M. Hoffman &dev_attr_in3_input.attr, 5870501a381SMark M. Hoffman &dev_attr_in3_min.attr, 5880501a381SMark M. Hoffman &dev_attr_in3_max.attr, 589c2803b98SJean Delvare &sensor_dev_attr_in3_alarm.dev_attr.attr, 5900501a381SMark M. Hoffman &dev_attr_in4_input.attr, 5910501a381SMark M. Hoffman &dev_attr_in4_min.attr, 5920501a381SMark M. Hoffman &dev_attr_in4_max.attr, 593c2803b98SJean Delvare &sensor_dev_attr_in4_alarm.dev_attr.attr, 5940501a381SMark M. Hoffman 5950501a381SMark M. Hoffman &dev_attr_temp1_input.attr, 5960501a381SMark M. Hoffman &dev_attr_temp1_max.attr, 5970501a381SMark M. Hoffman &dev_attr_temp1_min.attr, 5980501a381SMark M. Hoffman &dev_attr_temp1_crit.attr, 599c2803b98SJean Delvare &sensor_dev_attr_temp1_alarm.dev_attr.attr, 6000501a381SMark M. Hoffman &dev_attr_temp2_input.attr, 6010501a381SMark M. Hoffman &dev_attr_temp2_max.attr, 6020501a381SMark M. Hoffman &dev_attr_temp2_min.attr, 6030501a381SMark M. Hoffman &dev_attr_temp2_crit.attr, 604c2803b98SJean Delvare &sensor_dev_attr_temp2_alarm.dev_attr.attr, 605c2803b98SJean Delvare &sensor_dev_attr_temp2_fault.dev_attr.attr, 6060501a381SMark M. Hoffman 6070501a381SMark M. Hoffman &dev_attr_alarms.attr, 6080501a381SMark M. Hoffman &dev_attr_aout_output.attr, 6090501a381SMark M. Hoffman 6100501a381SMark M. Hoffman NULL 6110501a381SMark M. Hoffman }; 6120501a381SMark M. Hoffman 6130501a381SMark M. Hoffman static const struct attribute_group lm87_group = { 6140501a381SMark M. Hoffman .attrs = lm87_attributes, 6150501a381SMark M. Hoffman }; 6160501a381SMark M. Hoffman 6170501a381SMark M. Hoffman static struct attribute *lm87_attributes_opt[] = { 6180501a381SMark M. Hoffman &dev_attr_in6_input.attr, 6190501a381SMark M. Hoffman &dev_attr_in6_min.attr, 6200501a381SMark M. Hoffman &dev_attr_in6_max.attr, 621c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr.attr, 6220501a381SMark M. Hoffman 6230501a381SMark M. Hoffman &dev_attr_fan1_input.attr, 6240501a381SMark M. Hoffman &dev_attr_fan1_min.attr, 6250501a381SMark M. Hoffman &dev_attr_fan1_div.attr, 626c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr.attr, 6270501a381SMark M. Hoffman 6280501a381SMark M. Hoffman &dev_attr_in7_input.attr, 6290501a381SMark M. Hoffman &dev_attr_in7_min.attr, 6300501a381SMark M. Hoffman &dev_attr_in7_max.attr, 631c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr.attr, 6320501a381SMark M. Hoffman 6330501a381SMark M. Hoffman &dev_attr_fan2_input.attr, 6340501a381SMark M. Hoffman &dev_attr_fan2_min.attr, 6350501a381SMark M. Hoffman &dev_attr_fan2_div.attr, 636c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr.attr, 6370501a381SMark M. Hoffman 6380501a381SMark M. Hoffman &dev_attr_temp3_input.attr, 6390501a381SMark M. Hoffman &dev_attr_temp3_max.attr, 6400501a381SMark M. Hoffman &dev_attr_temp3_min.attr, 6410501a381SMark M. Hoffman &dev_attr_temp3_crit.attr, 642c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr.attr, 643c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr.attr, 6440501a381SMark M. Hoffman 6450501a381SMark M. Hoffman &dev_attr_in0_input.attr, 6460501a381SMark M. Hoffman &dev_attr_in0_min.attr, 6470501a381SMark M. Hoffman &dev_attr_in0_max.attr, 648c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr.attr, 6490501a381SMark M. Hoffman &dev_attr_in5_input.attr, 6500501a381SMark M. Hoffman &dev_attr_in5_min.attr, 6510501a381SMark M. Hoffman &dev_attr_in5_max.attr, 652c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr.attr, 6530501a381SMark M. Hoffman 6540501a381SMark M. Hoffman &dev_attr_cpu0_vid.attr, 6550501a381SMark M. Hoffman &dev_attr_vrm.attr, 6560501a381SMark M. Hoffman 6570501a381SMark M. Hoffman NULL 6580501a381SMark M. Hoffman }; 6590501a381SMark M. Hoffman 6600501a381SMark M. Hoffman static const struct attribute_group lm87_group_opt = { 6610501a381SMark M. Hoffman .attrs = lm87_attributes_opt, 6620501a381SMark M. Hoffman }; 6630501a381SMark M. Hoffman 664a888420aSJean Delvare /* Return 0 if detection is successful, -ENODEV otherwise */ 665a888420aSJean Delvare static int lm87_detect(struct i2c_client *new_client, int kind, 666a888420aSJean Delvare struct i2c_board_info *info) 6678d5d45fbSJean Delvare { 668a888420aSJean Delvare struct i2c_adapter *adapter = new_client->adapter; 669c7fa3737SJean Delvare static const char *names[] = { "lm87", "adm1024" }; 6708d5d45fbSJean Delvare 6718d5d45fbSJean Delvare if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 672a888420aSJean Delvare return -ENODEV; 6738d5d45fbSJean Delvare 6748d5d45fbSJean Delvare /* Default to an LM87 if forced */ 6758d5d45fbSJean Delvare if (kind == 0) 6768d5d45fbSJean Delvare kind = lm87; 6778d5d45fbSJean Delvare 6788d5d45fbSJean Delvare /* Now, we do the remaining detection. */ 6798d5d45fbSJean Delvare if (kind < 0) { 680c7fa3737SJean Delvare u8 cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID); 6818d5d45fbSJean Delvare u8 rev = lm87_read_value(new_client, LM87_REG_REVISION); 6828d5d45fbSJean Delvare 683c7fa3737SJean Delvare if (cid == 0x02 /* National Semiconductor */ 684c7fa3737SJean Delvare && (rev >= 0x01 && rev <= 0x08)) 685c7fa3737SJean Delvare kind = lm87; 686c7fa3737SJean Delvare else if (cid == 0x41 /* Analog Devices */ 687c7fa3737SJean Delvare && (rev & 0xf0) == 0x10) 688c7fa3737SJean Delvare kind = adm1024; 689c7fa3737SJean Delvare 690c7fa3737SJean Delvare if (kind < 0 691c7fa3737SJean Delvare || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80)) { 6928d5d45fbSJean Delvare dev_dbg(&adapter->dev, 6938d5d45fbSJean Delvare "LM87 detection failed at 0x%02x.\n", 694a888420aSJean Delvare new_client->addr); 695a888420aSJean Delvare return -ENODEV; 6968d5d45fbSJean Delvare } 6978d5d45fbSJean Delvare } 6988d5d45fbSJean Delvare 699a888420aSJean Delvare strlcpy(info->type, names[kind - 1], I2C_NAME_SIZE); 700a888420aSJean Delvare 701a888420aSJean Delvare return 0; 702a888420aSJean Delvare } 703a888420aSJean Delvare 704a888420aSJean Delvare static int lm87_probe(struct i2c_client *new_client, 705a888420aSJean Delvare const struct i2c_device_id *id) 706a888420aSJean Delvare { 707a888420aSJean Delvare struct lm87_data *data; 708a888420aSJean Delvare int err; 709a888420aSJean Delvare 710a888420aSJean Delvare data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL); 711a888420aSJean Delvare if (!data) { 712a888420aSJean Delvare err = -ENOMEM; 713a888420aSJean Delvare goto exit; 714a888420aSJean Delvare } 715a888420aSJean Delvare 716a888420aSJean Delvare i2c_set_clientdata(new_client, data); 7178d5d45fbSJean Delvare data->valid = 0; 7189a61bf63SIngo Molnar mutex_init(&data->update_lock); 7198d5d45fbSJean Delvare 7208d5d45fbSJean Delvare /* Initialize the LM87 chip */ 7218d5d45fbSJean Delvare lm87_init_client(new_client); 7228d5d45fbSJean Delvare 7238d5d45fbSJean Delvare data->in_scale[0] = 2500; 7248d5d45fbSJean Delvare data->in_scale[1] = 2700; 7258d5d45fbSJean Delvare data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; 7268d5d45fbSJean Delvare data->in_scale[3] = 5000; 7278d5d45fbSJean Delvare data->in_scale[4] = 12000; 7288d5d45fbSJean Delvare data->in_scale[5] = 2700; 7298d5d45fbSJean Delvare data->in_scale[6] = 1875; 7308d5d45fbSJean Delvare data->in_scale[7] = 1875; 7318d5d45fbSJean Delvare 7328d5d45fbSJean Delvare /* Register sysfs hooks */ 7330501a381SMark M. Hoffman if ((err = sysfs_create_group(&new_client->dev.kobj, &lm87_group))) 734a888420aSJean Delvare goto exit_free; 7358d5d45fbSJean Delvare 7368d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(0)) { 7370501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7380501a381SMark M. Hoffman &dev_attr_in6_input)) 7390501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7400501a381SMark M. Hoffman &dev_attr_in6_min)) 7410501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 742c2803b98SJean Delvare &dev_attr_in6_max)) 743c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 744c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr))) 7450501a381SMark M. Hoffman goto exit_remove; 7468d5d45fbSJean Delvare } else { 7470501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7480501a381SMark M. Hoffman &dev_attr_fan1_input)) 7490501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7500501a381SMark M. Hoffman &dev_attr_fan1_min)) 7510501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 752c2803b98SJean Delvare &dev_attr_fan1_div)) 753c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 754c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr))) 7550501a381SMark M. Hoffman goto exit_remove; 7568d5d45fbSJean Delvare } 7578d5d45fbSJean Delvare 7580501a381SMark M. Hoffman if (data->channel & CHAN_NO_FAN(1)) { 7590501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7600501a381SMark M. Hoffman &dev_attr_in7_input)) 7610501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7620501a381SMark M. Hoffman &dev_attr_in7_min)) 7630501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 764c2803b98SJean Delvare &dev_attr_in7_max)) 765c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 766c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr))) 7670501a381SMark M. Hoffman goto exit_remove; 7680501a381SMark M. Hoffman } else { 7690501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7700501a381SMark M. Hoffman &dev_attr_fan2_input)) 7710501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7720501a381SMark M. Hoffman &dev_attr_fan2_min)) 7730501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 774c2803b98SJean Delvare &dev_attr_fan2_div)) 775c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 776c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr))) 7770501a381SMark M. Hoffman goto exit_remove; 7780501a381SMark M. Hoffman } 7798d5d45fbSJean Delvare 7808d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 7810501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7820501a381SMark M. Hoffman &dev_attr_temp3_input)) 7830501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7840501a381SMark M. Hoffman &dev_attr_temp3_max)) 7850501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7860501a381SMark M. Hoffman &dev_attr_temp3_min)) 7870501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 788c2803b98SJean Delvare &dev_attr_temp3_crit)) 789c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 790c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr)) 791c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 792c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr))) 7930501a381SMark M. Hoffman goto exit_remove; 7948d5d45fbSJean Delvare } else { 7950501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7960501a381SMark M. Hoffman &dev_attr_in0_input)) 7970501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7980501a381SMark M. Hoffman &dev_attr_in0_min)) 7990501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 8000501a381SMark M. Hoffman &dev_attr_in0_max)) 8010501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 802c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr)) 803c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 8040501a381SMark M. Hoffman &dev_attr_in5_input)) 8050501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 8060501a381SMark M. Hoffman &dev_attr_in5_min)) 8070501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 808c2803b98SJean Delvare &dev_attr_in5_max)) 809c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 810c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr))) 8110501a381SMark M. Hoffman goto exit_remove; 8128d5d45fbSJean Delvare } 8138d5d45fbSJean Delvare 8148d5d45fbSJean Delvare if (!(data->channel & CHAN_NO_VID)) { 8158a665a05SJean Delvare data->vrm = vid_which_vrm(); 8160501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 8170501a381SMark M. Hoffman &dev_attr_cpu0_vid)) 8180501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 8190501a381SMark M. Hoffman &dev_attr_vrm))) 8200501a381SMark M. Hoffman goto exit_remove; 8218d5d45fbSJean Delvare } 8228d5d45fbSJean Delvare 8231beeffe4STony Jones data->hwmon_dev = hwmon_device_register(&new_client->dev); 8241beeffe4STony Jones if (IS_ERR(data->hwmon_dev)) { 8251beeffe4STony Jones err = PTR_ERR(data->hwmon_dev); 8260501a381SMark M. Hoffman goto exit_remove; 8270501a381SMark M. Hoffman } 8288d5d45fbSJean Delvare 8298d5d45fbSJean Delvare return 0; 8308d5d45fbSJean Delvare 8310501a381SMark M. Hoffman exit_remove: 8320501a381SMark M. Hoffman sysfs_remove_group(&new_client->dev.kobj, &lm87_group); 8330501a381SMark M. Hoffman sysfs_remove_group(&new_client->dev.kobj, &lm87_group_opt); 8348d5d45fbSJean Delvare exit_free: 8358d5d45fbSJean Delvare kfree(data); 8368d5d45fbSJean Delvare exit: 8378d5d45fbSJean Delvare return err; 8388d5d45fbSJean Delvare } 8398d5d45fbSJean Delvare 8408d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client) 8418d5d45fbSJean Delvare { 8428d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 8438d5d45fbSJean Delvare u8 config; 8448d5d45fbSJean Delvare 8458d5d45fbSJean Delvare data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); 8468d5d45fbSJean Delvare 8478d5d45fbSJean Delvare config = lm87_read_value(client, LM87_REG_CONFIG); 8488d5d45fbSJean Delvare if (!(config & 0x01)) { 8498d5d45fbSJean Delvare int i; 8508d5d45fbSJean Delvare 8518d5d45fbSJean Delvare /* Limits are left uninitialized after power-up */ 8528d5d45fbSJean Delvare for (i = 1; i < 6; i++) { 8538d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); 8548d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); 8558d5d45fbSJean Delvare } 8568d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 8578d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); 8588d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); 8598d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); 8608d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); 8618d5d45fbSJean Delvare } 8628d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 8638d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); 8648d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); 8658d5d45fbSJean Delvare } else { 8668d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); 8678d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); 8688d5d45fbSJean Delvare } 8698d5d45fbSJean Delvare } 87049ae6cc8SBen Hutchings 87149ae6cc8SBen Hutchings /* Make sure Start is set and INT#_Clear is clear */ 87249ae6cc8SBen Hutchings if ((config & 0x09) != 0x01) 8738d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_CONFIG, 87449ae6cc8SBen Hutchings (config & 0x77) | 0x01); 8758d5d45fbSJean Delvare } 8768d5d45fbSJean Delvare 877a888420aSJean Delvare static int lm87_remove(struct i2c_client *client) 8788d5d45fbSJean Delvare { 879943b0830SMark M. Hoffman struct lm87_data *data = i2c_get_clientdata(client); 8808d5d45fbSJean Delvare 8811beeffe4STony Jones hwmon_device_unregister(data->hwmon_dev); 8820501a381SMark M. Hoffman sysfs_remove_group(&client->dev.kobj, &lm87_group); 8830501a381SMark M. Hoffman sysfs_remove_group(&client->dev.kobj, &lm87_group_opt); 884943b0830SMark M. Hoffman 885943b0830SMark M. Hoffman kfree(data); 8868d5d45fbSJean Delvare return 0; 8878d5d45fbSJean Delvare } 8888d5d45fbSJean Delvare 8898d5d45fbSJean Delvare static struct lm87_data *lm87_update_device(struct device *dev) 8908d5d45fbSJean Delvare { 8918d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 8928d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 8938d5d45fbSJean Delvare 8949a61bf63SIngo Molnar mutex_lock(&data->update_lock); 8958d5d45fbSJean Delvare 8968d5d45fbSJean Delvare if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 8978d5d45fbSJean Delvare int i, j; 8988d5d45fbSJean Delvare 8998d5d45fbSJean Delvare dev_dbg(&client->dev, "Updating data.\n"); 9008d5d45fbSJean Delvare 9018d5d45fbSJean Delvare i = (data->channel & CHAN_TEMP3) ? 1 : 0; 9028d5d45fbSJean Delvare j = (data->channel & CHAN_TEMP3) ? 5 : 6; 9038d5d45fbSJean Delvare for (; i < j; i++) { 9048d5d45fbSJean Delvare data->in[i] = lm87_read_value(client, 9058d5d45fbSJean Delvare LM87_REG_IN(i)); 9068d5d45fbSJean Delvare data->in_min[i] = lm87_read_value(client, 9078d5d45fbSJean Delvare LM87_REG_IN_MIN(i)); 9088d5d45fbSJean Delvare data->in_max[i] = lm87_read_value(client, 9098d5d45fbSJean Delvare LM87_REG_IN_MAX(i)); 9108d5d45fbSJean Delvare } 9118d5d45fbSJean Delvare 9128d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 9138d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(i)) { 9148d5d45fbSJean Delvare data->in[6+i] = lm87_read_value(client, 9158d5d45fbSJean Delvare LM87_REG_AIN(i)); 9168d5d45fbSJean Delvare data->in_max[6+i] = lm87_read_value(client, 9178d5d45fbSJean Delvare LM87_REG_AIN_MAX(i)); 9188d5d45fbSJean Delvare data->in_min[6+i] = lm87_read_value(client, 9198d5d45fbSJean Delvare LM87_REG_AIN_MIN(i)); 9208d5d45fbSJean Delvare 9218d5d45fbSJean Delvare } else { 9228d5d45fbSJean Delvare data->fan[i] = lm87_read_value(client, 9238d5d45fbSJean Delvare LM87_REG_FAN(i)); 9248d5d45fbSJean Delvare data->fan_min[i] = lm87_read_value(client, 9258d5d45fbSJean Delvare LM87_REG_FAN_MIN(i)); 9268d5d45fbSJean Delvare } 9278d5d45fbSJean Delvare } 9288d5d45fbSJean Delvare 9298d5d45fbSJean Delvare j = (data->channel & CHAN_TEMP3) ? 3 : 2; 9308d5d45fbSJean Delvare for (i = 0 ; i < j; i++) { 9318d5d45fbSJean Delvare data->temp[i] = lm87_read_value(client, 9328d5d45fbSJean Delvare LM87_REG_TEMP[i]); 9338d5d45fbSJean Delvare data->temp_high[i] = lm87_read_value(client, 9348d5d45fbSJean Delvare LM87_REG_TEMP_HIGH[i]); 9358d5d45fbSJean Delvare data->temp_low[i] = lm87_read_value(client, 9368d5d45fbSJean Delvare LM87_REG_TEMP_LOW[i]); 9378d5d45fbSJean Delvare } 9388d5d45fbSJean Delvare 9398d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); 9408d5d45fbSJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); 9418d5d45fbSJean Delvare data->temp_crit_int = min(i, j); 9428d5d45fbSJean Delvare 9438d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); 9448d5d45fbSJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); 9458d5d45fbSJean Delvare data->temp_crit_ext = min(i, j); 9468d5d45fbSJean Delvare 9478d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 9488d5d45fbSJean Delvare data->fan_div[0] = (i >> 4) & 0x03; 9498d5d45fbSJean Delvare data->fan_div[1] = (i >> 6) & 0x03; 9508d5d45fbSJean Delvare data->vid = (i & 0x0F) 9518d5d45fbSJean Delvare | (lm87_read_value(client, LM87_REG_VID4) & 0x01) 9528d5d45fbSJean Delvare << 4; 9538d5d45fbSJean Delvare 9548d5d45fbSJean Delvare data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) 9558d5d45fbSJean Delvare | (lm87_read_value(client, LM87_REG_ALARMS2) 9568d5d45fbSJean Delvare << 8); 9578d5d45fbSJean Delvare data->aout = lm87_read_value(client, LM87_REG_AOUT); 9588d5d45fbSJean Delvare 9598d5d45fbSJean Delvare data->last_updated = jiffies; 9608d5d45fbSJean Delvare data->valid = 1; 9618d5d45fbSJean Delvare } 9628d5d45fbSJean Delvare 9639a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 9648d5d45fbSJean Delvare 9658d5d45fbSJean Delvare return data; 9668d5d45fbSJean Delvare } 9678d5d45fbSJean Delvare 9688d5d45fbSJean Delvare static int __init sensors_lm87_init(void) 9698d5d45fbSJean Delvare { 9708d5d45fbSJean Delvare return i2c_add_driver(&lm87_driver); 9718d5d45fbSJean Delvare } 9728d5d45fbSJean Delvare 9738d5d45fbSJean Delvare static void __exit sensors_lm87_exit(void) 9748d5d45fbSJean Delvare { 9758d5d45fbSJean Delvare i2c_del_driver(&lm87_driver); 9768d5d45fbSJean Delvare } 9778d5d45fbSJean Delvare 9788d5d45fbSJean Delvare MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others"); 9798d5d45fbSJean Delvare MODULE_DESCRIPTION("LM87 driver"); 9808d5d45fbSJean Delvare MODULE_LICENSE("GPL"); 9818d5d45fbSJean Delvare 9828d5d45fbSJean Delvare module_init(sensors_lm87_init); 9838d5d45fbSJean Delvare module_exit(sensors_lm87_exit); 984