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> 8c7fa3737SJean Delvare * Copyright (C) 2004,2007 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 768d5d45fbSJean Delvare static 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 1608d5d45fbSJean Delvare static int lm87_attach_adapter(struct i2c_adapter *adapter); 1618d5d45fbSJean Delvare static int lm87_detect(struct i2c_adapter *adapter, int address, int kind); 1628d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client); 1638d5d45fbSJean Delvare static int lm87_detach_client(struct i2c_client *client); 1648d5d45fbSJean Delvare static struct lm87_data *lm87_update_device(struct device *dev); 1658d5d45fbSJean Delvare 1668d5d45fbSJean Delvare /* 1678d5d45fbSJean Delvare * Driver data (common to all clients) 1688d5d45fbSJean Delvare */ 1698d5d45fbSJean Delvare 1708d5d45fbSJean Delvare static struct i2c_driver lm87_driver = { 171cdaf7934SLaurent Riffard .driver = { 1728d5d45fbSJean Delvare .name = "lm87", 173cdaf7934SLaurent Riffard }, 1748d5d45fbSJean Delvare .id = I2C_DRIVERID_LM87, 1758d5d45fbSJean Delvare .attach_adapter = lm87_attach_adapter, 1768d5d45fbSJean Delvare .detach_client = lm87_detach_client, 1778d5d45fbSJean Delvare }; 1788d5d45fbSJean Delvare 1798d5d45fbSJean Delvare /* 1808d5d45fbSJean Delvare * Client data (each client gets its own) 1818d5d45fbSJean Delvare */ 1828d5d45fbSJean Delvare 1838d5d45fbSJean Delvare struct lm87_data { 1848d5d45fbSJean Delvare struct i2c_client client; 1851beeffe4STony Jones struct device *hwmon_dev; 1869a61bf63SIngo Molnar struct mutex update_lock; 1878d5d45fbSJean Delvare char valid; /* zero until following fields are valid */ 1888d5d45fbSJean Delvare unsigned long last_updated; /* In jiffies */ 1898d5d45fbSJean Delvare 1908d5d45fbSJean Delvare u8 channel; /* register value */ 1918d5d45fbSJean Delvare 1928d5d45fbSJean Delvare u8 in[8]; /* register value */ 1938d5d45fbSJean Delvare u8 in_max[8]; /* register value */ 1948d5d45fbSJean Delvare u8 in_min[8]; /* register value */ 1958d5d45fbSJean Delvare u16 in_scale[8]; 1968d5d45fbSJean Delvare 1978d5d45fbSJean Delvare s8 temp[3]; /* register value */ 1988d5d45fbSJean Delvare s8 temp_high[3]; /* register value */ 1998d5d45fbSJean Delvare s8 temp_low[3]; /* register value */ 2008d5d45fbSJean Delvare s8 temp_crit_int; /* min of two register values */ 2018d5d45fbSJean Delvare s8 temp_crit_ext; /* min of two register values */ 2028d5d45fbSJean Delvare 2038d5d45fbSJean Delvare u8 fan[2]; /* register value */ 2048d5d45fbSJean Delvare u8 fan_min[2]; /* register value */ 2058d5d45fbSJean Delvare u8 fan_div[2]; /* register value, shifted right */ 2068d5d45fbSJean Delvare u8 aout; /* register value */ 2078d5d45fbSJean Delvare 2088d5d45fbSJean Delvare u16 alarms; /* register values, combined */ 2098d5d45fbSJean Delvare u8 vid; /* register values, combined */ 2108d5d45fbSJean Delvare u8 vrm; 2118d5d45fbSJean Delvare }; 2128d5d45fbSJean Delvare 2138d5d45fbSJean Delvare /* 2148d5d45fbSJean Delvare * Sysfs stuff 2158d5d45fbSJean Delvare */ 2168d5d45fbSJean Delvare 2178d5d45fbSJean Delvare static inline int lm87_read_value(struct i2c_client *client, u8 reg) 2188d5d45fbSJean Delvare { 2198d5d45fbSJean Delvare return i2c_smbus_read_byte_data(client, reg); 2208d5d45fbSJean Delvare } 2218d5d45fbSJean Delvare 2228d5d45fbSJean Delvare static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) 2238d5d45fbSJean Delvare { 2248d5d45fbSJean Delvare return i2c_smbus_write_byte_data(client, reg, value); 2258d5d45fbSJean Delvare } 2268d5d45fbSJean Delvare 2278d5d45fbSJean Delvare #define show_in(offset) \ 2288d5d45fbSJean Delvare static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 2298d5d45fbSJean Delvare { \ 2308d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2318d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \ 2328d5d45fbSJean Delvare data->in_scale[offset])); \ 2338d5d45fbSJean Delvare } \ 2348d5d45fbSJean Delvare static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ 2358d5d45fbSJean Delvare { \ 2368d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2378d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \ 2388d5d45fbSJean Delvare data->in_scale[offset])); \ 2398d5d45fbSJean Delvare } \ 2408d5d45fbSJean Delvare static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \ 2418d5d45fbSJean Delvare { \ 2428d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2438d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \ 2448d5d45fbSJean Delvare data->in_scale[offset])); \ 2458d5d45fbSJean Delvare } \ 2468d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 2478d5d45fbSJean Delvare show_in##offset##_input, NULL); 2488d5d45fbSJean Delvare show_in(0); 2498d5d45fbSJean Delvare show_in(1); 2508d5d45fbSJean Delvare show_in(2); 2518d5d45fbSJean Delvare show_in(3); 2528d5d45fbSJean Delvare show_in(4); 2538d5d45fbSJean Delvare show_in(5); 2548d5d45fbSJean Delvare show_in(6); 2558d5d45fbSJean Delvare show_in(7); 2568d5d45fbSJean Delvare 2578d5d45fbSJean Delvare static void set_in_min(struct device *dev, const char *buf, int nr) 2588d5d45fbSJean Delvare { 2598d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 2608d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2618d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 2628d5d45fbSJean Delvare 2639a61bf63SIngo Molnar mutex_lock(&data->update_lock); 2648d5d45fbSJean Delvare data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); 2658d5d45fbSJean Delvare lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) : 2668d5d45fbSJean Delvare LM87_REG_AIN_MIN(nr-6), data->in_min[nr]); 2679a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 2688d5d45fbSJean Delvare } 2698d5d45fbSJean Delvare 2708d5d45fbSJean Delvare static void set_in_max(struct device *dev, const char *buf, int nr) 2718d5d45fbSJean Delvare { 2728d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 2738d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2748d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 2758d5d45fbSJean Delvare 2769a61bf63SIngo Molnar mutex_lock(&data->update_lock); 2778d5d45fbSJean Delvare data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); 2788d5d45fbSJean Delvare lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) : 2798d5d45fbSJean Delvare LM87_REG_AIN_MAX(nr-6), data->in_max[nr]); 2809a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 2818d5d45fbSJean Delvare } 2828d5d45fbSJean Delvare 2838d5d45fbSJean Delvare #define set_in(offset) \ 2848d5d45fbSJean Delvare static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, \ 2858d5d45fbSJean Delvare const char *buf, size_t count) \ 2868d5d45fbSJean Delvare { \ 2878d5d45fbSJean Delvare set_in_min(dev, buf, offset); \ 2888d5d45fbSJean Delvare return count; \ 2898d5d45fbSJean Delvare } \ 2908d5d45fbSJean Delvare static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, \ 2918d5d45fbSJean Delvare const char *buf, size_t count) \ 2928d5d45fbSJean Delvare { \ 2938d5d45fbSJean Delvare set_in_max(dev, buf, offset); \ 2948d5d45fbSJean Delvare return count; \ 2958d5d45fbSJean Delvare } \ 2968d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 2978d5d45fbSJean Delvare show_in##offset##_min, set_in##offset##_min); \ 2988d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 2998d5d45fbSJean Delvare show_in##offset##_max, set_in##offset##_max); 3008d5d45fbSJean Delvare set_in(0); 3018d5d45fbSJean Delvare set_in(1); 3028d5d45fbSJean Delvare set_in(2); 3038d5d45fbSJean Delvare set_in(3); 3048d5d45fbSJean Delvare set_in(4); 3058d5d45fbSJean Delvare set_in(5); 3068d5d45fbSJean Delvare set_in(6); 3078d5d45fbSJean Delvare set_in(7); 3088d5d45fbSJean Delvare 3098d5d45fbSJean Delvare #define show_temp(offset) \ 3108d5d45fbSJean Delvare static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 3118d5d45fbSJean Delvare { \ 3128d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3138d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \ 3148d5d45fbSJean Delvare } \ 3158d5d45fbSJean Delvare static ssize_t show_temp##offset##_low(struct device *dev, struct device_attribute *attr, char *buf) \ 3168d5d45fbSJean Delvare { \ 3178d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3188d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[offset-1])); \ 3198d5d45fbSJean Delvare } \ 3208d5d45fbSJean Delvare static ssize_t show_temp##offset##_high(struct device *dev, struct device_attribute *attr, char *buf) \ 3218d5d45fbSJean Delvare { \ 3228d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3238d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[offset-1])); \ 3248d5d45fbSJean Delvare }\ 3258d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 3268d5d45fbSJean Delvare show_temp##offset##_input, NULL); 3278d5d45fbSJean Delvare show_temp(1); 3288d5d45fbSJean Delvare show_temp(2); 3298d5d45fbSJean Delvare show_temp(3); 3308d5d45fbSJean Delvare 3318d5d45fbSJean Delvare static void set_temp_low(struct device *dev, const char *buf, int nr) 3328d5d45fbSJean Delvare { 3338d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3348d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3358d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 3368d5d45fbSJean Delvare 3379a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3388d5d45fbSJean Delvare data->temp_low[nr] = TEMP_TO_REG(val); 3398d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); 3409a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 3418d5d45fbSJean Delvare } 3428d5d45fbSJean Delvare 3438d5d45fbSJean Delvare static void set_temp_high(struct device *dev, const char *buf, int nr) 3448d5d45fbSJean Delvare { 3458d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3468d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3478d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 3488d5d45fbSJean Delvare 3499a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3508d5d45fbSJean Delvare data->temp_high[nr] = TEMP_TO_REG(val); 3518d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); 3529a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 3538d5d45fbSJean Delvare } 3548d5d45fbSJean Delvare 3558d5d45fbSJean Delvare #define set_temp(offset) \ 3568d5d45fbSJean Delvare static ssize_t set_temp##offset##_low(struct device *dev, struct device_attribute *attr, \ 3578d5d45fbSJean Delvare const char *buf, size_t count) \ 3588d5d45fbSJean Delvare { \ 3598d5d45fbSJean Delvare set_temp_low(dev, buf, offset-1); \ 3608d5d45fbSJean Delvare return count; \ 3618d5d45fbSJean Delvare } \ 3628d5d45fbSJean Delvare static ssize_t set_temp##offset##_high(struct device *dev, struct device_attribute *attr, \ 3638d5d45fbSJean Delvare const char *buf, size_t count) \ 3648d5d45fbSJean Delvare { \ 3658d5d45fbSJean Delvare set_temp_high(dev, buf, offset-1); \ 3668d5d45fbSJean Delvare return count; \ 3678d5d45fbSJean Delvare } \ 3688d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 3698d5d45fbSJean Delvare show_temp##offset##_high, set_temp##offset##_high); \ 3708d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 3718d5d45fbSJean Delvare show_temp##offset##_low, set_temp##offset##_low); 3728d5d45fbSJean Delvare set_temp(1); 3738d5d45fbSJean Delvare set_temp(2); 3748d5d45fbSJean Delvare set_temp(3); 3758d5d45fbSJean Delvare 3768d5d45fbSJean Delvare static ssize_t show_temp_crit_int(struct device *dev, struct device_attribute *attr, char *buf) 3778d5d45fbSJean Delvare { 3788d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3798d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); 3808d5d45fbSJean Delvare } 3818d5d45fbSJean Delvare 3828d5d45fbSJean Delvare static ssize_t show_temp_crit_ext(struct device *dev, struct device_attribute *attr, char *buf) 3838d5d45fbSJean Delvare { 3848d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3858d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); 3868d5d45fbSJean Delvare } 3878d5d45fbSJean Delvare 3888d5d45fbSJean Delvare static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); 3898d5d45fbSJean Delvare static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); 3908d5d45fbSJean Delvare static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); 3918d5d45fbSJean Delvare 3928d5d45fbSJean Delvare #define show_fan(offset) \ 3938d5d45fbSJean Delvare static ssize_t show_fan##offset##_input(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", FAN_FROM_REG(data->fan[offset-1], \ 3978d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ 3988d5d45fbSJean Delvare } \ 3998d5d45fbSJean Delvare static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ 4008d5d45fbSJean Delvare { \ 4018d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 4028d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset-1], \ 4038d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ 4048d5d45fbSJean Delvare } \ 4058d5d45fbSJean Delvare static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \ 4068d5d45fbSJean Delvare { \ 4078d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 4088d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[offset-1])); \ 4098d5d45fbSJean Delvare } \ 4108d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 4118d5d45fbSJean Delvare show_fan##offset##_input, NULL); 4128d5d45fbSJean Delvare show_fan(1); 4138d5d45fbSJean Delvare show_fan(2); 4148d5d45fbSJean Delvare 4158d5d45fbSJean Delvare static void set_fan_min(struct device *dev, const char *buf, int nr) 4168d5d45fbSJean Delvare { 4178d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4188d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4198d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 4208d5d45fbSJean Delvare 4219a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4228d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(val, 4238d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4248d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); 4259a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4268d5d45fbSJean Delvare } 4278d5d45fbSJean Delvare 4288d5d45fbSJean Delvare /* Note: we save and restore the fan minimum here, because its value is 4298d5d45fbSJean Delvare determined in part by the fan clock divider. This follows the principle 430d6e05edcSAndreas Mohr of least surprise; the user doesn't expect the fan minimum to change just 4318d5d45fbSJean Delvare because the divider changed. */ 4328d5d45fbSJean Delvare static ssize_t set_fan_div(struct device *dev, const char *buf, 4338d5d45fbSJean Delvare size_t count, int nr) 4348d5d45fbSJean Delvare { 4358d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4368d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4378d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 4388d5d45fbSJean Delvare unsigned long min; 4398d5d45fbSJean Delvare u8 reg; 4408d5d45fbSJean Delvare 4419a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4428d5d45fbSJean Delvare min = FAN_FROM_REG(data->fan_min[nr], 4438d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4448d5d45fbSJean Delvare 4458d5d45fbSJean Delvare switch (val) { 4468d5d45fbSJean Delvare case 1: data->fan_div[nr] = 0; break; 4478d5d45fbSJean Delvare case 2: data->fan_div[nr] = 1; break; 4488d5d45fbSJean Delvare case 4: data->fan_div[nr] = 2; break; 4498d5d45fbSJean Delvare case 8: data->fan_div[nr] = 3; break; 4508d5d45fbSJean Delvare default: 4519a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4528d5d45fbSJean Delvare return -EINVAL; 4538d5d45fbSJean Delvare } 4548d5d45fbSJean Delvare 4558d5d45fbSJean Delvare reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 4568d5d45fbSJean Delvare switch (nr) { 4578d5d45fbSJean Delvare case 0: 4588d5d45fbSJean Delvare reg = (reg & 0xCF) | (data->fan_div[0] << 4); 4598d5d45fbSJean Delvare break; 4608d5d45fbSJean Delvare case 1: 4618d5d45fbSJean Delvare reg = (reg & 0x3F) | (data->fan_div[1] << 6); 4628d5d45fbSJean Delvare break; 4638d5d45fbSJean Delvare } 4648d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); 4658d5d45fbSJean Delvare 4668d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(min, val); 4678d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), 4688d5d45fbSJean Delvare data->fan_min[nr]); 4699a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4708d5d45fbSJean Delvare 4718d5d45fbSJean Delvare return count; 4728d5d45fbSJean Delvare } 4738d5d45fbSJean Delvare 4748d5d45fbSJean Delvare #define set_fan(offset) \ 4758d5d45fbSJean Delvare static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \ 4768d5d45fbSJean Delvare size_t count) \ 4778d5d45fbSJean Delvare { \ 4788d5d45fbSJean Delvare set_fan_min(dev, buf, offset-1); \ 4798d5d45fbSJean Delvare return count; \ 4808d5d45fbSJean Delvare } \ 4818d5d45fbSJean Delvare static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \ 4828d5d45fbSJean Delvare size_t count) \ 4838d5d45fbSJean Delvare { \ 4848d5d45fbSJean Delvare return set_fan_div(dev, buf, count, offset-1); \ 4858d5d45fbSJean Delvare } \ 4868d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 4878d5d45fbSJean Delvare show_fan##offset##_min, set_fan##offset##_min); \ 4888d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 4898d5d45fbSJean Delvare show_fan##offset##_div, set_fan##offset##_div); 4908d5d45fbSJean Delvare set_fan(1); 4918d5d45fbSJean Delvare set_fan(2); 4928d5d45fbSJean Delvare 4938d5d45fbSJean Delvare static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) 4948d5d45fbSJean Delvare { 4958d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4968d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->alarms); 4978d5d45fbSJean Delvare } 4988d5d45fbSJean Delvare static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 4998d5d45fbSJean Delvare 5008d5d45fbSJean Delvare static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) 5018d5d45fbSJean Delvare { 5028d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5038d5d45fbSJean Delvare return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 5048d5d45fbSJean Delvare } 5058d5d45fbSJean Delvare static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); 5068d5d45fbSJean Delvare 5078d5d45fbSJean Delvare static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf) 5088d5d45fbSJean Delvare { 50990d6619aSJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 5108d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->vrm); 5118d5d45fbSJean Delvare } 5128d5d45fbSJean Delvare static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 5138d5d45fbSJean Delvare { 5148d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 5158d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5168d5d45fbSJean Delvare data->vrm = simple_strtoul(buf, NULL, 10); 5178d5d45fbSJean Delvare return count; 5188d5d45fbSJean Delvare } 5198d5d45fbSJean Delvare static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); 5208d5d45fbSJean Delvare 5218d5d45fbSJean Delvare static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf) 5228d5d45fbSJean Delvare { 5238d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5248d5d45fbSJean Delvare return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); 5258d5d45fbSJean Delvare } 5268d5d45fbSJean Delvare static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 5278d5d45fbSJean Delvare { 5288d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 5298d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5308d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 5318d5d45fbSJean Delvare 5329a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5338d5d45fbSJean Delvare data->aout = AOUT_TO_REG(val); 5348d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AOUT, data->aout); 5359a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5368d5d45fbSJean Delvare return count; 5378d5d45fbSJean Delvare } 5388d5d45fbSJean Delvare static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); 5398d5d45fbSJean Delvare 540c2803b98SJean Delvare static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 541c2803b98SJean Delvare char *buf) 542c2803b98SJean Delvare { 543c2803b98SJean Delvare struct lm87_data *data = lm87_update_device(dev); 544c2803b98SJean Delvare int bitnr = to_sensor_dev_attr(attr)->index; 545c2803b98SJean Delvare return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 546c2803b98SJean Delvare } 547c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 548c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 549c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 550c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 551c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 552c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); 553c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); 554c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); 555c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 556c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 557c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); 558c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); 559c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); 560c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); 561c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 562c2803b98SJean Delvare 5638d5d45fbSJean Delvare /* 5648d5d45fbSJean Delvare * Real code 5658d5d45fbSJean Delvare */ 5668d5d45fbSJean Delvare 5678d5d45fbSJean Delvare static int lm87_attach_adapter(struct i2c_adapter *adapter) 5688d5d45fbSJean Delvare { 5698d5d45fbSJean Delvare if (!(adapter->class & I2C_CLASS_HWMON)) 5708d5d45fbSJean Delvare return 0; 5712ed2dc3cSJean Delvare return i2c_probe(adapter, &addr_data, lm87_detect); 5728d5d45fbSJean Delvare } 5738d5d45fbSJean Delvare 5740501a381SMark M. Hoffman static struct attribute *lm87_attributes[] = { 5750501a381SMark M. Hoffman &dev_attr_in1_input.attr, 5760501a381SMark M. Hoffman &dev_attr_in1_min.attr, 5770501a381SMark M. Hoffman &dev_attr_in1_max.attr, 578c2803b98SJean Delvare &sensor_dev_attr_in1_alarm.dev_attr.attr, 5790501a381SMark M. Hoffman &dev_attr_in2_input.attr, 5800501a381SMark M. Hoffman &dev_attr_in2_min.attr, 5810501a381SMark M. Hoffman &dev_attr_in2_max.attr, 582c2803b98SJean Delvare &sensor_dev_attr_in2_alarm.dev_attr.attr, 5830501a381SMark M. Hoffman &dev_attr_in3_input.attr, 5840501a381SMark M. Hoffman &dev_attr_in3_min.attr, 5850501a381SMark M. Hoffman &dev_attr_in3_max.attr, 586c2803b98SJean Delvare &sensor_dev_attr_in3_alarm.dev_attr.attr, 5870501a381SMark M. Hoffman &dev_attr_in4_input.attr, 5880501a381SMark M. Hoffman &dev_attr_in4_min.attr, 5890501a381SMark M. Hoffman &dev_attr_in4_max.attr, 590c2803b98SJean Delvare &sensor_dev_attr_in4_alarm.dev_attr.attr, 5910501a381SMark M. Hoffman 5920501a381SMark M. Hoffman &dev_attr_temp1_input.attr, 5930501a381SMark M. Hoffman &dev_attr_temp1_max.attr, 5940501a381SMark M. Hoffman &dev_attr_temp1_min.attr, 5950501a381SMark M. Hoffman &dev_attr_temp1_crit.attr, 596c2803b98SJean Delvare &sensor_dev_attr_temp1_alarm.dev_attr.attr, 5970501a381SMark M. Hoffman &dev_attr_temp2_input.attr, 5980501a381SMark M. Hoffman &dev_attr_temp2_max.attr, 5990501a381SMark M. Hoffman &dev_attr_temp2_min.attr, 6000501a381SMark M. Hoffman &dev_attr_temp2_crit.attr, 601c2803b98SJean Delvare &sensor_dev_attr_temp2_alarm.dev_attr.attr, 602c2803b98SJean Delvare &sensor_dev_attr_temp2_fault.dev_attr.attr, 6030501a381SMark M. Hoffman 6040501a381SMark M. Hoffman &dev_attr_alarms.attr, 6050501a381SMark M. Hoffman &dev_attr_aout_output.attr, 6060501a381SMark M. Hoffman 6070501a381SMark M. Hoffman NULL 6080501a381SMark M. Hoffman }; 6090501a381SMark M. Hoffman 6100501a381SMark M. Hoffman static const struct attribute_group lm87_group = { 6110501a381SMark M. Hoffman .attrs = lm87_attributes, 6120501a381SMark M. Hoffman }; 6130501a381SMark M. Hoffman 6140501a381SMark M. Hoffman static struct attribute *lm87_attributes_opt[] = { 6150501a381SMark M. Hoffman &dev_attr_in6_input.attr, 6160501a381SMark M. Hoffman &dev_attr_in6_min.attr, 6170501a381SMark M. Hoffman &dev_attr_in6_max.attr, 618c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr.attr, 6190501a381SMark M. Hoffman 6200501a381SMark M. Hoffman &dev_attr_fan1_input.attr, 6210501a381SMark M. Hoffman &dev_attr_fan1_min.attr, 6220501a381SMark M. Hoffman &dev_attr_fan1_div.attr, 623c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr.attr, 6240501a381SMark M. Hoffman 6250501a381SMark M. Hoffman &dev_attr_in7_input.attr, 6260501a381SMark M. Hoffman &dev_attr_in7_min.attr, 6270501a381SMark M. Hoffman &dev_attr_in7_max.attr, 628c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr.attr, 6290501a381SMark M. Hoffman 6300501a381SMark M. Hoffman &dev_attr_fan2_input.attr, 6310501a381SMark M. Hoffman &dev_attr_fan2_min.attr, 6320501a381SMark M. Hoffman &dev_attr_fan2_div.attr, 633c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr.attr, 6340501a381SMark M. Hoffman 6350501a381SMark M. Hoffman &dev_attr_temp3_input.attr, 6360501a381SMark M. Hoffman &dev_attr_temp3_max.attr, 6370501a381SMark M. Hoffman &dev_attr_temp3_min.attr, 6380501a381SMark M. Hoffman &dev_attr_temp3_crit.attr, 639c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr.attr, 640c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr.attr, 6410501a381SMark M. Hoffman 6420501a381SMark M. Hoffman &dev_attr_in0_input.attr, 6430501a381SMark M. Hoffman &dev_attr_in0_min.attr, 6440501a381SMark M. Hoffman &dev_attr_in0_max.attr, 645c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr.attr, 6460501a381SMark M. Hoffman &dev_attr_in5_input.attr, 6470501a381SMark M. Hoffman &dev_attr_in5_min.attr, 6480501a381SMark M. Hoffman &dev_attr_in5_max.attr, 649c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr.attr, 6500501a381SMark M. Hoffman 6510501a381SMark M. Hoffman &dev_attr_cpu0_vid.attr, 6520501a381SMark M. Hoffman &dev_attr_vrm.attr, 6530501a381SMark M. Hoffman 6540501a381SMark M. Hoffman NULL 6550501a381SMark M. Hoffman }; 6560501a381SMark M. Hoffman 6570501a381SMark M. Hoffman static const struct attribute_group lm87_group_opt = { 6580501a381SMark M. Hoffman .attrs = lm87_attributes_opt, 6590501a381SMark M. Hoffman }; 6600501a381SMark M. Hoffman 6618d5d45fbSJean Delvare /* 6628d5d45fbSJean Delvare * The following function does more than just detection. If detection 6638d5d45fbSJean Delvare * succeeds, it also registers the new chip. 6648d5d45fbSJean Delvare */ 6658d5d45fbSJean Delvare static int lm87_detect(struct i2c_adapter *adapter, int address, int kind) 6668d5d45fbSJean Delvare { 6678d5d45fbSJean Delvare struct i2c_client *new_client; 6688d5d45fbSJean Delvare struct lm87_data *data; 6698d5d45fbSJean Delvare int err = 0; 670c7fa3737SJean Delvare static const char *names[] = { "lm87", "adm1024" }; 6718d5d45fbSJean Delvare 6728d5d45fbSJean Delvare if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 6738d5d45fbSJean Delvare goto exit; 6748d5d45fbSJean Delvare 675ba9c2e8dSDeepak Saxena if (!(data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL))) { 6768d5d45fbSJean Delvare err = -ENOMEM; 6778d5d45fbSJean Delvare goto exit; 6788d5d45fbSJean Delvare } 6798d5d45fbSJean Delvare 6808d5d45fbSJean Delvare /* The common I2C client data is placed right before the 6818d5d45fbSJean Delvare LM87-specific data. */ 6828d5d45fbSJean Delvare new_client = &data->client; 6838d5d45fbSJean Delvare i2c_set_clientdata(new_client, data); 6848d5d45fbSJean Delvare new_client->addr = address; 6858d5d45fbSJean Delvare new_client->adapter = adapter; 6868d5d45fbSJean Delvare new_client->driver = &lm87_driver; 6878d5d45fbSJean Delvare new_client->flags = 0; 6888d5d45fbSJean Delvare 6898d5d45fbSJean Delvare /* Default to an LM87 if forced */ 6908d5d45fbSJean Delvare if (kind == 0) 6918d5d45fbSJean Delvare kind = lm87; 6928d5d45fbSJean Delvare 6938d5d45fbSJean Delvare /* Now, we do the remaining detection. */ 6948d5d45fbSJean Delvare if (kind < 0) { 695c7fa3737SJean Delvare u8 cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID); 6968d5d45fbSJean Delvare u8 rev = lm87_read_value(new_client, LM87_REG_REVISION); 6978d5d45fbSJean Delvare 698c7fa3737SJean Delvare if (cid == 0x02 /* National Semiconductor */ 699c7fa3737SJean Delvare && (rev >= 0x01 && rev <= 0x08)) 700c7fa3737SJean Delvare kind = lm87; 701c7fa3737SJean Delvare else if (cid == 0x41 /* Analog Devices */ 702c7fa3737SJean Delvare && (rev & 0xf0) == 0x10) 703c7fa3737SJean Delvare kind = adm1024; 704c7fa3737SJean Delvare 705c7fa3737SJean Delvare if (kind < 0 706c7fa3737SJean Delvare || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80)) { 7078d5d45fbSJean Delvare dev_dbg(&adapter->dev, 7088d5d45fbSJean Delvare "LM87 detection failed at 0x%02x.\n", 7098d5d45fbSJean Delvare address); 7108d5d45fbSJean Delvare goto exit_free; 7118d5d45fbSJean Delvare } 7128d5d45fbSJean Delvare } 7138d5d45fbSJean Delvare 7148d5d45fbSJean Delvare /* We can fill in the remaining client fields */ 715c7fa3737SJean Delvare strlcpy(new_client->name, names[kind - 1], I2C_NAME_SIZE); 7168d5d45fbSJean Delvare data->valid = 0; 7179a61bf63SIngo Molnar mutex_init(&data->update_lock); 7188d5d45fbSJean Delvare 7198d5d45fbSJean Delvare /* Tell the I2C layer a new client has arrived */ 7208d5d45fbSJean Delvare if ((err = i2c_attach_client(new_client))) 7218d5d45fbSJean Delvare goto exit_free; 7228d5d45fbSJean Delvare 7238d5d45fbSJean Delvare /* Initialize the LM87 chip */ 7248d5d45fbSJean Delvare lm87_init_client(new_client); 7258d5d45fbSJean Delvare 7268d5d45fbSJean Delvare data->in_scale[0] = 2500; 7278d5d45fbSJean Delvare data->in_scale[1] = 2700; 7288d5d45fbSJean Delvare data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; 7298d5d45fbSJean Delvare data->in_scale[3] = 5000; 7308d5d45fbSJean Delvare data->in_scale[4] = 12000; 7318d5d45fbSJean Delvare data->in_scale[5] = 2700; 7328d5d45fbSJean Delvare data->in_scale[6] = 1875; 7338d5d45fbSJean Delvare data->in_scale[7] = 1875; 7348d5d45fbSJean Delvare 7358d5d45fbSJean Delvare /* Register sysfs hooks */ 7360501a381SMark M. Hoffman if ((err = sysfs_create_group(&new_client->dev.kobj, &lm87_group))) 737943b0830SMark M. Hoffman goto exit_detach; 7388d5d45fbSJean Delvare 7398d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(0)) { 7400501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7410501a381SMark M. Hoffman &dev_attr_in6_input)) 7420501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7430501a381SMark M. Hoffman &dev_attr_in6_min)) 7440501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 745c2803b98SJean Delvare &dev_attr_in6_max)) 746c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 747c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr))) 7480501a381SMark M. Hoffman goto exit_remove; 7498d5d45fbSJean Delvare } else { 7500501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7510501a381SMark M. Hoffman &dev_attr_fan1_input)) 7520501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7530501a381SMark M. Hoffman &dev_attr_fan1_min)) 7540501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 755c2803b98SJean Delvare &dev_attr_fan1_div)) 756c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 757c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr))) 7580501a381SMark M. Hoffman goto exit_remove; 7598d5d45fbSJean Delvare } 7608d5d45fbSJean Delvare 7610501a381SMark M. Hoffman if (data->channel & CHAN_NO_FAN(1)) { 7620501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7630501a381SMark M. Hoffman &dev_attr_in7_input)) 7640501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7650501a381SMark M. Hoffman &dev_attr_in7_min)) 7660501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 767c2803b98SJean Delvare &dev_attr_in7_max)) 768c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 769c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr))) 7700501a381SMark M. Hoffman goto exit_remove; 7710501a381SMark M. Hoffman } else { 7720501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7730501a381SMark M. Hoffman &dev_attr_fan2_input)) 7740501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7750501a381SMark M. Hoffman &dev_attr_fan2_min)) 7760501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 777c2803b98SJean Delvare &dev_attr_fan2_div)) 778c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 779c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr))) 7800501a381SMark M. Hoffman goto exit_remove; 7810501a381SMark M. Hoffman } 7828d5d45fbSJean Delvare 7838d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 7840501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7850501a381SMark M. Hoffman &dev_attr_temp3_input)) 7860501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7870501a381SMark M. Hoffman &dev_attr_temp3_max)) 7880501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7890501a381SMark M. Hoffman &dev_attr_temp3_min)) 7900501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 791c2803b98SJean Delvare &dev_attr_temp3_crit)) 792c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 793c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr)) 794c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 795c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr))) 7960501a381SMark M. Hoffman goto exit_remove; 7978d5d45fbSJean Delvare } else { 7980501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7990501a381SMark M. Hoffman &dev_attr_in0_input)) 8000501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 8010501a381SMark M. Hoffman &dev_attr_in0_min)) 8020501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 8030501a381SMark M. Hoffman &dev_attr_in0_max)) 8040501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 805c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr)) 806c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 8070501a381SMark M. Hoffman &dev_attr_in5_input)) 8080501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 8090501a381SMark M. Hoffman &dev_attr_in5_min)) 8100501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 811c2803b98SJean Delvare &dev_attr_in5_max)) 812c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 813c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr))) 8140501a381SMark M. Hoffman goto exit_remove; 8158d5d45fbSJean Delvare } 8168d5d45fbSJean Delvare 8178d5d45fbSJean Delvare if (!(data->channel & CHAN_NO_VID)) { 8188a665a05SJean Delvare data->vrm = vid_which_vrm(); 8190501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 8200501a381SMark M. Hoffman &dev_attr_cpu0_vid)) 8210501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 8220501a381SMark M. Hoffman &dev_attr_vrm))) 8230501a381SMark M. Hoffman goto exit_remove; 8248d5d45fbSJean Delvare } 8258d5d45fbSJean Delvare 8261beeffe4STony Jones data->hwmon_dev = hwmon_device_register(&new_client->dev); 8271beeffe4STony Jones if (IS_ERR(data->hwmon_dev)) { 8281beeffe4STony Jones err = PTR_ERR(data->hwmon_dev); 8290501a381SMark M. Hoffman goto exit_remove; 8300501a381SMark M. Hoffman } 8318d5d45fbSJean Delvare 8328d5d45fbSJean Delvare return 0; 8338d5d45fbSJean Delvare 8340501a381SMark M. Hoffman exit_remove: 8350501a381SMark M. Hoffman sysfs_remove_group(&new_client->dev.kobj, &lm87_group); 8360501a381SMark M. Hoffman sysfs_remove_group(&new_client->dev.kobj, &lm87_group_opt); 837943b0830SMark M. Hoffman exit_detach: 838943b0830SMark M. Hoffman i2c_detach_client(new_client); 8398d5d45fbSJean Delvare exit_free: 8408d5d45fbSJean Delvare kfree(data); 8418d5d45fbSJean Delvare exit: 8428d5d45fbSJean Delvare return err; 8438d5d45fbSJean Delvare } 8448d5d45fbSJean Delvare 8458d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client) 8468d5d45fbSJean Delvare { 8478d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 8488d5d45fbSJean Delvare u8 config; 8498d5d45fbSJean Delvare 8508d5d45fbSJean Delvare data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); 8518d5d45fbSJean Delvare 8528d5d45fbSJean Delvare config = lm87_read_value(client, LM87_REG_CONFIG); 8538d5d45fbSJean Delvare if (!(config & 0x01)) { 8548d5d45fbSJean Delvare int i; 8558d5d45fbSJean Delvare 8568d5d45fbSJean Delvare /* Limits are left uninitialized after power-up */ 8578d5d45fbSJean Delvare for (i = 1; i < 6; i++) { 8588d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); 8598d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); 8608d5d45fbSJean Delvare } 8618d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 8628d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); 8638d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); 8648d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); 8658d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); 8668d5d45fbSJean Delvare } 8678d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 8688d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); 8698d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); 8708d5d45fbSJean Delvare } else { 8718d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); 8728d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); 8738d5d45fbSJean Delvare } 8748d5d45fbSJean Delvare } 8758d5d45fbSJean Delvare if ((config & 0x81) != 0x01) { 8768d5d45fbSJean Delvare /* Start monitoring */ 8778d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_CONFIG, 8788d5d45fbSJean Delvare (config & 0xF7) | 0x01); 8798d5d45fbSJean Delvare } 8808d5d45fbSJean Delvare } 8818d5d45fbSJean Delvare 8828d5d45fbSJean Delvare static int lm87_detach_client(struct i2c_client *client) 8838d5d45fbSJean Delvare { 884943b0830SMark M. Hoffman struct lm87_data *data = i2c_get_clientdata(client); 8858d5d45fbSJean Delvare int err; 8868d5d45fbSJean Delvare 8871beeffe4STony Jones hwmon_device_unregister(data->hwmon_dev); 8880501a381SMark M. Hoffman sysfs_remove_group(&client->dev.kobj, &lm87_group); 8890501a381SMark M. Hoffman sysfs_remove_group(&client->dev.kobj, &lm87_group_opt); 890943b0830SMark M. Hoffman 8917bef5594SJean Delvare if ((err = i2c_detach_client(client))) 8928d5d45fbSJean Delvare return err; 8938d5d45fbSJean Delvare 894943b0830SMark M. Hoffman kfree(data); 8958d5d45fbSJean Delvare return 0; 8968d5d45fbSJean Delvare } 8978d5d45fbSJean Delvare 8988d5d45fbSJean Delvare static struct lm87_data *lm87_update_device(struct device *dev) 8998d5d45fbSJean Delvare { 9008d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 9018d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 9028d5d45fbSJean Delvare 9039a61bf63SIngo Molnar mutex_lock(&data->update_lock); 9048d5d45fbSJean Delvare 9058d5d45fbSJean Delvare if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 9068d5d45fbSJean Delvare int i, j; 9078d5d45fbSJean Delvare 9088d5d45fbSJean Delvare dev_dbg(&client->dev, "Updating data.\n"); 9098d5d45fbSJean Delvare 9108d5d45fbSJean Delvare i = (data->channel & CHAN_TEMP3) ? 1 : 0; 9118d5d45fbSJean Delvare j = (data->channel & CHAN_TEMP3) ? 5 : 6; 9128d5d45fbSJean Delvare for (; i < j; i++) { 9138d5d45fbSJean Delvare data->in[i] = lm87_read_value(client, 9148d5d45fbSJean Delvare LM87_REG_IN(i)); 9158d5d45fbSJean Delvare data->in_min[i] = lm87_read_value(client, 9168d5d45fbSJean Delvare LM87_REG_IN_MIN(i)); 9178d5d45fbSJean Delvare data->in_max[i] = lm87_read_value(client, 9188d5d45fbSJean Delvare LM87_REG_IN_MAX(i)); 9198d5d45fbSJean Delvare } 9208d5d45fbSJean Delvare 9218d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 9228d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(i)) { 9238d5d45fbSJean Delvare data->in[6+i] = lm87_read_value(client, 9248d5d45fbSJean Delvare LM87_REG_AIN(i)); 9258d5d45fbSJean Delvare data->in_max[6+i] = lm87_read_value(client, 9268d5d45fbSJean Delvare LM87_REG_AIN_MAX(i)); 9278d5d45fbSJean Delvare data->in_min[6+i] = lm87_read_value(client, 9288d5d45fbSJean Delvare LM87_REG_AIN_MIN(i)); 9298d5d45fbSJean Delvare 9308d5d45fbSJean Delvare } else { 9318d5d45fbSJean Delvare data->fan[i] = lm87_read_value(client, 9328d5d45fbSJean Delvare LM87_REG_FAN(i)); 9338d5d45fbSJean Delvare data->fan_min[i] = lm87_read_value(client, 9348d5d45fbSJean Delvare LM87_REG_FAN_MIN(i)); 9358d5d45fbSJean Delvare } 9368d5d45fbSJean Delvare } 9378d5d45fbSJean Delvare 9388d5d45fbSJean Delvare j = (data->channel & CHAN_TEMP3) ? 3 : 2; 9398d5d45fbSJean Delvare for (i = 0 ; i < j; i++) { 9408d5d45fbSJean Delvare data->temp[i] = lm87_read_value(client, 9418d5d45fbSJean Delvare LM87_REG_TEMP[i]); 9428d5d45fbSJean Delvare data->temp_high[i] = lm87_read_value(client, 9438d5d45fbSJean Delvare LM87_REG_TEMP_HIGH[i]); 9448d5d45fbSJean Delvare data->temp_low[i] = lm87_read_value(client, 9458d5d45fbSJean Delvare LM87_REG_TEMP_LOW[i]); 9468d5d45fbSJean Delvare } 9478d5d45fbSJean Delvare 9488d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); 9498d5d45fbSJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); 9508d5d45fbSJean Delvare data->temp_crit_int = min(i, j); 9518d5d45fbSJean Delvare 9528d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); 9538d5d45fbSJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); 9548d5d45fbSJean Delvare data->temp_crit_ext = min(i, j); 9558d5d45fbSJean Delvare 9568d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 9578d5d45fbSJean Delvare data->fan_div[0] = (i >> 4) & 0x03; 9588d5d45fbSJean Delvare data->fan_div[1] = (i >> 6) & 0x03; 9598d5d45fbSJean Delvare data->vid = (i & 0x0F) 9608d5d45fbSJean Delvare | (lm87_read_value(client, LM87_REG_VID4) & 0x01) 9618d5d45fbSJean Delvare << 4; 9628d5d45fbSJean Delvare 9638d5d45fbSJean Delvare data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) 9648d5d45fbSJean Delvare | (lm87_read_value(client, LM87_REG_ALARMS2) 9658d5d45fbSJean Delvare << 8); 9668d5d45fbSJean Delvare data->aout = lm87_read_value(client, LM87_REG_AOUT); 9678d5d45fbSJean Delvare 9688d5d45fbSJean Delvare data->last_updated = jiffies; 9698d5d45fbSJean Delvare data->valid = 1; 9708d5d45fbSJean Delvare } 9718d5d45fbSJean Delvare 9729a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 9738d5d45fbSJean Delvare 9748d5d45fbSJean Delvare return data; 9758d5d45fbSJean Delvare } 9768d5d45fbSJean Delvare 9778d5d45fbSJean Delvare static int __init sensors_lm87_init(void) 9788d5d45fbSJean Delvare { 9798d5d45fbSJean Delvare return i2c_add_driver(&lm87_driver); 9808d5d45fbSJean Delvare } 9818d5d45fbSJean Delvare 9828d5d45fbSJean Delvare static void __exit sensors_lm87_exit(void) 9838d5d45fbSJean Delvare { 9848d5d45fbSJean Delvare i2c_del_driver(&lm87_driver); 9858d5d45fbSJean Delvare } 9868d5d45fbSJean Delvare 9878d5d45fbSJean Delvare MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others"); 9888d5d45fbSJean Delvare MODULE_DESCRIPTION("LM87 driver"); 9898d5d45fbSJean Delvare MODULE_LICENSE("GPL"); 9908d5d45fbSJean Delvare 9918d5d45fbSJean Delvare module_init(sensors_lm87_init); 9928d5d45fbSJean Delvare module_exit(sensors_lm87_exit); 993