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> 88d5d45fbSJean Delvare * Copyright (C) 2004 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 * 408d5d45fbSJean Delvare * This program is free software; you can redistribute it and/or modify 418d5d45fbSJean Delvare * it under the terms of the GNU General Public License as published by 428d5d45fbSJean Delvare * the Free Software Foundation; either version 2 of the License, or 438d5d45fbSJean Delvare * (at your option) any later version. 448d5d45fbSJean Delvare * 458d5d45fbSJean Delvare * This program is distributed in the hope that it will be useful, 468d5d45fbSJean Delvare * but WITHOUT ANY WARRANTY; without even the implied warranty of 478d5d45fbSJean Delvare * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 488d5d45fbSJean Delvare * GNU General Public License for more details. 498d5d45fbSJean Delvare * 508d5d45fbSJean Delvare * You should have received a copy of the GNU General Public License 518d5d45fbSJean Delvare * along with this program; if not, write to the Free Software 528d5d45fbSJean Delvare * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 538d5d45fbSJean Delvare */ 548d5d45fbSJean Delvare 558d5d45fbSJean Delvare #include <linux/module.h> 568d5d45fbSJean Delvare #include <linux/init.h> 578d5d45fbSJean Delvare #include <linux/slab.h> 588d5d45fbSJean Delvare #include <linux/jiffies.h> 598d5d45fbSJean Delvare #include <linux/i2c.h> 60943b0830SMark M. Hoffman #include <linux/hwmon.h> 61c2803b98SJean Delvare #include <linux/hwmon-sysfs.h> 62303760b4SJean Delvare #include <linux/hwmon-vid.h> 63943b0830SMark M. Hoffman #include <linux/err.h> 649a61bf63SIngo Molnar #include <linux/mutex.h> 658d5d45fbSJean Delvare 668d5d45fbSJean Delvare /* 678d5d45fbSJean Delvare * Addresses to scan 688d5d45fbSJean Delvare * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. 698d5d45fbSJean Delvare */ 708d5d45fbSJean Delvare 718d5d45fbSJean Delvare static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 728d5d45fbSJean Delvare 738d5d45fbSJean Delvare /* 748d5d45fbSJean Delvare * Insmod parameters 758d5d45fbSJean Delvare */ 768d5d45fbSJean Delvare 77f4b50261SJean Delvare I2C_CLIENT_INSMOD_1(lm87); 788d5d45fbSJean Delvare 798d5d45fbSJean Delvare /* 808d5d45fbSJean Delvare * The LM87 registers 818d5d45fbSJean Delvare */ 828d5d45fbSJean Delvare 838d5d45fbSJean Delvare /* nr in 0..5 */ 848d5d45fbSJean Delvare #define LM87_REG_IN(nr) (0x20 + (nr)) 858d5d45fbSJean Delvare #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) 868d5d45fbSJean Delvare #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) 878d5d45fbSJean Delvare /* nr in 0..1 */ 888d5d45fbSJean Delvare #define LM87_REG_AIN(nr) (0x28 + (nr)) 898d5d45fbSJean Delvare #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) 908d5d45fbSJean Delvare #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) 918d5d45fbSJean Delvare 928d5d45fbSJean Delvare static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; 938d5d45fbSJean Delvare static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; 948d5d45fbSJean Delvare static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; 958d5d45fbSJean Delvare 968d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT_LOCK 0x13 978d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 988d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT 0x17 998d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT 0x18 1008d5d45fbSJean Delvare 1018d5d45fbSJean Delvare /* nr in 0..1 */ 1028d5d45fbSJean Delvare #define LM87_REG_FAN(nr) (0x28 + (nr)) 1038d5d45fbSJean Delvare #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) 1048d5d45fbSJean Delvare #define LM87_REG_AOUT 0x19 1058d5d45fbSJean Delvare 1068d5d45fbSJean Delvare #define LM87_REG_CONFIG 0x40 1078d5d45fbSJean Delvare #define LM87_REG_CHANNEL_MODE 0x16 1088d5d45fbSJean Delvare #define LM87_REG_VID_FAN_DIV 0x47 1098d5d45fbSJean Delvare #define LM87_REG_VID4 0x49 1108d5d45fbSJean Delvare 1118d5d45fbSJean Delvare #define LM87_REG_ALARMS1 0x41 1128d5d45fbSJean Delvare #define LM87_REG_ALARMS2 0x42 1138d5d45fbSJean Delvare 1148d5d45fbSJean Delvare #define LM87_REG_COMPANY_ID 0x3E 1158d5d45fbSJean Delvare #define LM87_REG_REVISION 0x3F 1168d5d45fbSJean Delvare 1178d5d45fbSJean Delvare /* 1188d5d45fbSJean Delvare * Conversions and various macros 1198d5d45fbSJean Delvare * The LM87 uses signed 8-bit values for temperatures. 1208d5d45fbSJean Delvare */ 1218d5d45fbSJean Delvare 1228d5d45fbSJean Delvare #define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192) 1238d5d45fbSJean Delvare #define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \ 1248d5d45fbSJean Delvare (val) * 192 >= (scale) * 255 ? 255 : \ 1258d5d45fbSJean Delvare ((val) * 192 + (scale)/2) / (scale)) 1268d5d45fbSJean Delvare 1278d5d45fbSJean Delvare #define TEMP_FROM_REG(reg) ((reg) * 1000) 1288d5d45fbSJean Delvare #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ 1298d5d45fbSJean Delvare (val) >= 126500 ? 127 : \ 1308d5d45fbSJean Delvare (((val) < 0 ? (val)-500 : (val)+500) / 1000)) 1318d5d45fbSJean Delvare 1328d5d45fbSJean Delvare #define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \ 133b965d4b7SJean Delvare (1350000 + (reg)*(div) / 2) / ((reg)*(div))) 1348d5d45fbSJean Delvare #define FAN_TO_REG(val,div) ((val)*(div) * 255 <= 1350000 ? 255 : \ 1358d5d45fbSJean Delvare (1350000 + (val)*(div) / 2) / ((val)*(div))) 1368d5d45fbSJean Delvare 1378d5d45fbSJean Delvare #define FAN_DIV_FROM_REG(reg) (1 << (reg)) 1388d5d45fbSJean Delvare 1398d5d45fbSJean Delvare /* analog out is 9.80mV/LSB */ 1408d5d45fbSJean Delvare #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) 1418d5d45fbSJean Delvare #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ 1428d5d45fbSJean Delvare (val) >= 2500 ? 255 : \ 1438d5d45fbSJean Delvare ((val) * 10 + 49) / 98) 1448d5d45fbSJean Delvare 1458d5d45fbSJean Delvare /* nr in 0..1 */ 1468d5d45fbSJean Delvare #define CHAN_NO_FAN(nr) (1 << (nr)) 1478d5d45fbSJean Delvare #define CHAN_TEMP3 (1 << 2) 1488d5d45fbSJean Delvare #define CHAN_VCC_5V (1 << 3) 149889af3d5SJean Delvare #define CHAN_NO_VID (1 << 7) 1508d5d45fbSJean Delvare 1518d5d45fbSJean Delvare /* 1528d5d45fbSJean Delvare * Functions declaration 1538d5d45fbSJean Delvare */ 1548d5d45fbSJean Delvare 1558d5d45fbSJean Delvare static int lm87_attach_adapter(struct i2c_adapter *adapter); 1568d5d45fbSJean Delvare static int lm87_detect(struct i2c_adapter *adapter, int address, int kind); 1578d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client); 1588d5d45fbSJean Delvare static int lm87_detach_client(struct i2c_client *client); 1598d5d45fbSJean Delvare static struct lm87_data *lm87_update_device(struct device *dev); 1608d5d45fbSJean Delvare 1618d5d45fbSJean Delvare /* 1628d5d45fbSJean Delvare * Driver data (common to all clients) 1638d5d45fbSJean Delvare */ 1648d5d45fbSJean Delvare 1658d5d45fbSJean Delvare static struct i2c_driver lm87_driver = { 166cdaf7934SLaurent Riffard .driver = { 1678d5d45fbSJean Delvare .name = "lm87", 168cdaf7934SLaurent Riffard }, 1698d5d45fbSJean Delvare .id = I2C_DRIVERID_LM87, 1708d5d45fbSJean Delvare .attach_adapter = lm87_attach_adapter, 1718d5d45fbSJean Delvare .detach_client = lm87_detach_client, 1728d5d45fbSJean Delvare }; 1738d5d45fbSJean Delvare 1748d5d45fbSJean Delvare /* 1758d5d45fbSJean Delvare * Client data (each client gets its own) 1768d5d45fbSJean Delvare */ 1778d5d45fbSJean Delvare 1788d5d45fbSJean Delvare struct lm87_data { 1798d5d45fbSJean Delvare struct i2c_client client; 1801beeffe4STony Jones struct device *hwmon_dev; 1819a61bf63SIngo Molnar struct mutex update_lock; 1828d5d45fbSJean Delvare char valid; /* zero until following fields are valid */ 1838d5d45fbSJean Delvare unsigned long last_updated; /* In jiffies */ 1848d5d45fbSJean Delvare 1858d5d45fbSJean Delvare u8 channel; /* register value */ 1868d5d45fbSJean Delvare 1878d5d45fbSJean Delvare u8 in[8]; /* register value */ 1888d5d45fbSJean Delvare u8 in_max[8]; /* register value */ 1898d5d45fbSJean Delvare u8 in_min[8]; /* register value */ 1908d5d45fbSJean Delvare u16 in_scale[8]; 1918d5d45fbSJean Delvare 1928d5d45fbSJean Delvare s8 temp[3]; /* register value */ 1938d5d45fbSJean Delvare s8 temp_high[3]; /* register value */ 1948d5d45fbSJean Delvare s8 temp_low[3]; /* register value */ 1958d5d45fbSJean Delvare s8 temp_crit_int; /* min of two register values */ 1968d5d45fbSJean Delvare s8 temp_crit_ext; /* min of two register values */ 1978d5d45fbSJean Delvare 1988d5d45fbSJean Delvare u8 fan[2]; /* register value */ 1998d5d45fbSJean Delvare u8 fan_min[2]; /* register value */ 2008d5d45fbSJean Delvare u8 fan_div[2]; /* register value, shifted right */ 2018d5d45fbSJean Delvare u8 aout; /* register value */ 2028d5d45fbSJean Delvare 2038d5d45fbSJean Delvare u16 alarms; /* register values, combined */ 2048d5d45fbSJean Delvare u8 vid; /* register values, combined */ 2058d5d45fbSJean Delvare u8 vrm; 2068d5d45fbSJean Delvare }; 2078d5d45fbSJean Delvare 2088d5d45fbSJean Delvare /* 2098d5d45fbSJean Delvare * Sysfs stuff 2108d5d45fbSJean Delvare */ 2118d5d45fbSJean Delvare 2128d5d45fbSJean Delvare static inline int lm87_read_value(struct i2c_client *client, u8 reg) 2138d5d45fbSJean Delvare { 2148d5d45fbSJean Delvare return i2c_smbus_read_byte_data(client, reg); 2158d5d45fbSJean Delvare } 2168d5d45fbSJean Delvare 2178d5d45fbSJean Delvare static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) 2188d5d45fbSJean Delvare { 2198d5d45fbSJean Delvare return i2c_smbus_write_byte_data(client, reg, value); 2208d5d45fbSJean Delvare } 2218d5d45fbSJean Delvare 2228d5d45fbSJean Delvare #define show_in(offset) \ 2238d5d45fbSJean Delvare static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 2248d5d45fbSJean Delvare { \ 2258d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2268d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \ 2278d5d45fbSJean Delvare data->in_scale[offset])); \ 2288d5d45fbSJean Delvare } \ 2298d5d45fbSJean Delvare static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ 2308d5d45fbSJean Delvare { \ 2318d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2328d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \ 2338d5d45fbSJean Delvare data->in_scale[offset])); \ 2348d5d45fbSJean Delvare } \ 2358d5d45fbSJean Delvare static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \ 2368d5d45fbSJean Delvare { \ 2378d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2388d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \ 2398d5d45fbSJean Delvare data->in_scale[offset])); \ 2408d5d45fbSJean Delvare } \ 2418d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 2428d5d45fbSJean Delvare show_in##offset##_input, NULL); 2438d5d45fbSJean Delvare show_in(0); 2448d5d45fbSJean Delvare show_in(1); 2458d5d45fbSJean Delvare show_in(2); 2468d5d45fbSJean Delvare show_in(3); 2478d5d45fbSJean Delvare show_in(4); 2488d5d45fbSJean Delvare show_in(5); 2498d5d45fbSJean Delvare show_in(6); 2508d5d45fbSJean Delvare show_in(7); 2518d5d45fbSJean Delvare 2528d5d45fbSJean Delvare static void set_in_min(struct device *dev, const char *buf, int nr) 2538d5d45fbSJean Delvare { 2548d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 2558d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2568d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 2578d5d45fbSJean Delvare 2589a61bf63SIngo Molnar mutex_lock(&data->update_lock); 2598d5d45fbSJean Delvare data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); 2608d5d45fbSJean Delvare lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) : 2618d5d45fbSJean Delvare LM87_REG_AIN_MIN(nr-6), data->in_min[nr]); 2629a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 2638d5d45fbSJean Delvare } 2648d5d45fbSJean Delvare 2658d5d45fbSJean Delvare static void set_in_max(struct device *dev, const char *buf, int nr) 2668d5d45fbSJean Delvare { 2678d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 2688d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2698d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 2708d5d45fbSJean Delvare 2719a61bf63SIngo Molnar mutex_lock(&data->update_lock); 2728d5d45fbSJean Delvare data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); 2738d5d45fbSJean Delvare lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) : 2748d5d45fbSJean Delvare LM87_REG_AIN_MAX(nr-6), data->in_max[nr]); 2759a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 2768d5d45fbSJean Delvare } 2778d5d45fbSJean Delvare 2788d5d45fbSJean Delvare #define set_in(offset) \ 2798d5d45fbSJean Delvare static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, \ 2808d5d45fbSJean Delvare const char *buf, size_t count) \ 2818d5d45fbSJean Delvare { \ 2828d5d45fbSJean Delvare set_in_min(dev, buf, offset); \ 2838d5d45fbSJean Delvare return count; \ 2848d5d45fbSJean Delvare } \ 2858d5d45fbSJean Delvare static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, \ 2868d5d45fbSJean Delvare const char *buf, size_t count) \ 2878d5d45fbSJean Delvare { \ 2888d5d45fbSJean Delvare set_in_max(dev, buf, offset); \ 2898d5d45fbSJean Delvare return count; \ 2908d5d45fbSJean Delvare } \ 2918d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 2928d5d45fbSJean Delvare show_in##offset##_min, set_in##offset##_min); \ 2938d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 2948d5d45fbSJean Delvare show_in##offset##_max, set_in##offset##_max); 2958d5d45fbSJean Delvare set_in(0); 2968d5d45fbSJean Delvare set_in(1); 2978d5d45fbSJean Delvare set_in(2); 2988d5d45fbSJean Delvare set_in(3); 2998d5d45fbSJean Delvare set_in(4); 3008d5d45fbSJean Delvare set_in(5); 3018d5d45fbSJean Delvare set_in(6); 3028d5d45fbSJean Delvare set_in(7); 3038d5d45fbSJean Delvare 3048d5d45fbSJean Delvare #define show_temp(offset) \ 3058d5d45fbSJean Delvare static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 3068d5d45fbSJean Delvare { \ 3078d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3088d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \ 3098d5d45fbSJean Delvare } \ 3108d5d45fbSJean Delvare static ssize_t show_temp##offset##_low(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_low[offset-1])); \ 3148d5d45fbSJean Delvare } \ 3158d5d45fbSJean Delvare static ssize_t show_temp##offset##_high(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_high[offset-1])); \ 3198d5d45fbSJean Delvare }\ 3208d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 3218d5d45fbSJean Delvare show_temp##offset##_input, NULL); 3228d5d45fbSJean Delvare show_temp(1); 3238d5d45fbSJean Delvare show_temp(2); 3248d5d45fbSJean Delvare show_temp(3); 3258d5d45fbSJean Delvare 3268d5d45fbSJean Delvare static void set_temp_low(struct device *dev, const char *buf, int nr) 3278d5d45fbSJean Delvare { 3288d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3298d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3308d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 3318d5d45fbSJean Delvare 3329a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3338d5d45fbSJean Delvare data->temp_low[nr] = TEMP_TO_REG(val); 3348d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); 3359a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 3368d5d45fbSJean Delvare } 3378d5d45fbSJean Delvare 3388d5d45fbSJean Delvare static void set_temp_high(struct device *dev, const char *buf, int nr) 3398d5d45fbSJean Delvare { 3408d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3418d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3428d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 3438d5d45fbSJean Delvare 3449a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3458d5d45fbSJean Delvare data->temp_high[nr] = TEMP_TO_REG(val); 3468d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); 3479a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 3488d5d45fbSJean Delvare } 3498d5d45fbSJean Delvare 3508d5d45fbSJean Delvare #define set_temp(offset) \ 3518d5d45fbSJean Delvare static ssize_t set_temp##offset##_low(struct device *dev, struct device_attribute *attr, \ 3528d5d45fbSJean Delvare const char *buf, size_t count) \ 3538d5d45fbSJean Delvare { \ 3548d5d45fbSJean Delvare set_temp_low(dev, buf, offset-1); \ 3558d5d45fbSJean Delvare return count; \ 3568d5d45fbSJean Delvare } \ 3578d5d45fbSJean Delvare static ssize_t set_temp##offset##_high(struct device *dev, struct device_attribute *attr, \ 3588d5d45fbSJean Delvare const char *buf, size_t count) \ 3598d5d45fbSJean Delvare { \ 3608d5d45fbSJean Delvare set_temp_high(dev, buf, offset-1); \ 3618d5d45fbSJean Delvare return count; \ 3628d5d45fbSJean Delvare } \ 3638d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 3648d5d45fbSJean Delvare show_temp##offset##_high, set_temp##offset##_high); \ 3658d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 3668d5d45fbSJean Delvare show_temp##offset##_low, set_temp##offset##_low); 3678d5d45fbSJean Delvare set_temp(1); 3688d5d45fbSJean Delvare set_temp(2); 3698d5d45fbSJean Delvare set_temp(3); 3708d5d45fbSJean Delvare 3718d5d45fbSJean Delvare static ssize_t show_temp_crit_int(struct device *dev, struct device_attribute *attr, char *buf) 3728d5d45fbSJean Delvare { 3738d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3748d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); 3758d5d45fbSJean Delvare } 3768d5d45fbSJean Delvare 3778d5d45fbSJean Delvare static ssize_t show_temp_crit_ext(struct device *dev, struct device_attribute *attr, char *buf) 3788d5d45fbSJean Delvare { 3798d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3808d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); 3818d5d45fbSJean Delvare } 3828d5d45fbSJean Delvare 3838d5d45fbSJean Delvare static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); 3848d5d45fbSJean Delvare static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); 3858d5d45fbSJean Delvare static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); 3868d5d45fbSJean Delvare 3878d5d45fbSJean Delvare #define show_fan(offset) \ 3888d5d45fbSJean Delvare static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 3898d5d45fbSJean Delvare { \ 3908d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3918d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset-1], \ 3928d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ 3938d5d45fbSJean Delvare } \ 3948d5d45fbSJean Delvare static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ 3958d5d45fbSJean Delvare { \ 3968d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3978d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset-1], \ 3988d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ 3998d5d45fbSJean Delvare } \ 4008d5d45fbSJean Delvare static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \ 4018d5d45fbSJean Delvare { \ 4028d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 4038d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[offset-1])); \ 4048d5d45fbSJean Delvare } \ 4058d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 4068d5d45fbSJean Delvare show_fan##offset##_input, NULL); 4078d5d45fbSJean Delvare show_fan(1); 4088d5d45fbSJean Delvare show_fan(2); 4098d5d45fbSJean Delvare 4108d5d45fbSJean Delvare static void set_fan_min(struct device *dev, const char *buf, int nr) 4118d5d45fbSJean Delvare { 4128d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4138d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4148d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 4158d5d45fbSJean Delvare 4169a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4178d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(val, 4188d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4198d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); 4209a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4218d5d45fbSJean Delvare } 4228d5d45fbSJean Delvare 4238d5d45fbSJean Delvare /* Note: we save and restore the fan minimum here, because its value is 4248d5d45fbSJean Delvare determined in part by the fan clock divider. This follows the principle 425d6e05edcSAndreas Mohr of least surprise; the user doesn't expect the fan minimum to change just 4268d5d45fbSJean Delvare because the divider changed. */ 4278d5d45fbSJean Delvare static ssize_t set_fan_div(struct device *dev, const char *buf, 4288d5d45fbSJean Delvare size_t count, int nr) 4298d5d45fbSJean Delvare { 4308d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4318d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4328d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 4338d5d45fbSJean Delvare unsigned long min; 4348d5d45fbSJean Delvare u8 reg; 4358d5d45fbSJean Delvare 4369a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4378d5d45fbSJean Delvare min = FAN_FROM_REG(data->fan_min[nr], 4388d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4398d5d45fbSJean Delvare 4408d5d45fbSJean Delvare switch (val) { 4418d5d45fbSJean Delvare case 1: data->fan_div[nr] = 0; break; 4428d5d45fbSJean Delvare case 2: data->fan_div[nr] = 1; break; 4438d5d45fbSJean Delvare case 4: data->fan_div[nr] = 2; break; 4448d5d45fbSJean Delvare case 8: data->fan_div[nr] = 3; break; 4458d5d45fbSJean Delvare default: 4469a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4478d5d45fbSJean Delvare return -EINVAL; 4488d5d45fbSJean Delvare } 4498d5d45fbSJean Delvare 4508d5d45fbSJean Delvare reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 4518d5d45fbSJean Delvare switch (nr) { 4528d5d45fbSJean Delvare case 0: 4538d5d45fbSJean Delvare reg = (reg & 0xCF) | (data->fan_div[0] << 4); 4548d5d45fbSJean Delvare break; 4558d5d45fbSJean Delvare case 1: 4568d5d45fbSJean Delvare reg = (reg & 0x3F) | (data->fan_div[1] << 6); 4578d5d45fbSJean Delvare break; 4588d5d45fbSJean Delvare } 4598d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); 4608d5d45fbSJean Delvare 4618d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(min, val); 4628d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), 4638d5d45fbSJean Delvare data->fan_min[nr]); 4649a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 4658d5d45fbSJean Delvare 4668d5d45fbSJean Delvare return count; 4678d5d45fbSJean Delvare } 4688d5d45fbSJean Delvare 4698d5d45fbSJean Delvare #define set_fan(offset) \ 4708d5d45fbSJean Delvare static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \ 4718d5d45fbSJean Delvare size_t count) \ 4728d5d45fbSJean Delvare { \ 4738d5d45fbSJean Delvare set_fan_min(dev, buf, offset-1); \ 4748d5d45fbSJean Delvare return count; \ 4758d5d45fbSJean Delvare } \ 4768d5d45fbSJean Delvare static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \ 4778d5d45fbSJean Delvare size_t count) \ 4788d5d45fbSJean Delvare { \ 4798d5d45fbSJean Delvare return set_fan_div(dev, buf, count, offset-1); \ 4808d5d45fbSJean Delvare } \ 4818d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 4828d5d45fbSJean Delvare show_fan##offset##_min, set_fan##offset##_min); \ 4838d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 4848d5d45fbSJean Delvare show_fan##offset##_div, set_fan##offset##_div); 4858d5d45fbSJean Delvare set_fan(1); 4868d5d45fbSJean Delvare set_fan(2); 4878d5d45fbSJean Delvare 4888d5d45fbSJean Delvare static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) 4898d5d45fbSJean Delvare { 4908d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4918d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->alarms); 4928d5d45fbSJean Delvare } 4938d5d45fbSJean Delvare static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 4948d5d45fbSJean Delvare 4958d5d45fbSJean Delvare static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) 4968d5d45fbSJean Delvare { 4978d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4988d5d45fbSJean Delvare return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 4998d5d45fbSJean Delvare } 5008d5d45fbSJean Delvare static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); 5018d5d45fbSJean Delvare 5028d5d45fbSJean Delvare static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf) 5038d5d45fbSJean Delvare { 50490d6619aSJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 5058d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->vrm); 5068d5d45fbSJean Delvare } 5078d5d45fbSJean Delvare static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 5088d5d45fbSJean Delvare { 5098d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 5108d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5118d5d45fbSJean Delvare data->vrm = simple_strtoul(buf, NULL, 10); 5128d5d45fbSJean Delvare return count; 5138d5d45fbSJean Delvare } 5148d5d45fbSJean Delvare static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); 5158d5d45fbSJean Delvare 5168d5d45fbSJean Delvare static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf) 5178d5d45fbSJean Delvare { 5188d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5198d5d45fbSJean Delvare return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); 5208d5d45fbSJean Delvare } 5218d5d45fbSJean Delvare static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 5228d5d45fbSJean Delvare { 5238d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 5248d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5258d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 5268d5d45fbSJean Delvare 5279a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5288d5d45fbSJean Delvare data->aout = AOUT_TO_REG(val); 5298d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AOUT, data->aout); 5309a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5318d5d45fbSJean Delvare return count; 5328d5d45fbSJean Delvare } 5338d5d45fbSJean Delvare static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); 5348d5d45fbSJean Delvare 535c2803b98SJean Delvare static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 536c2803b98SJean Delvare char *buf) 537c2803b98SJean Delvare { 538c2803b98SJean Delvare struct lm87_data *data = lm87_update_device(dev); 539c2803b98SJean Delvare int bitnr = to_sensor_dev_attr(attr)->index; 540c2803b98SJean Delvare return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 541c2803b98SJean Delvare } 542c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 543c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 544c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 545c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 546c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 547c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); 548c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); 549c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); 550c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 551c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 552c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); 553c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); 554c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); 555c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); 556c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 557c2803b98SJean Delvare 5588d5d45fbSJean Delvare /* 5598d5d45fbSJean Delvare * Real code 5608d5d45fbSJean Delvare */ 5618d5d45fbSJean Delvare 5628d5d45fbSJean Delvare static int lm87_attach_adapter(struct i2c_adapter *adapter) 5638d5d45fbSJean Delvare { 5648d5d45fbSJean Delvare if (!(adapter->class & I2C_CLASS_HWMON)) 5658d5d45fbSJean Delvare return 0; 5662ed2dc3cSJean Delvare return i2c_probe(adapter, &addr_data, lm87_detect); 5678d5d45fbSJean Delvare } 5688d5d45fbSJean Delvare 5690501a381SMark M. Hoffman static struct attribute *lm87_attributes[] = { 5700501a381SMark M. Hoffman &dev_attr_in1_input.attr, 5710501a381SMark M. Hoffman &dev_attr_in1_min.attr, 5720501a381SMark M. Hoffman &dev_attr_in1_max.attr, 573c2803b98SJean Delvare &sensor_dev_attr_in1_alarm.dev_attr.attr, 5740501a381SMark M. Hoffman &dev_attr_in2_input.attr, 5750501a381SMark M. Hoffman &dev_attr_in2_min.attr, 5760501a381SMark M. Hoffman &dev_attr_in2_max.attr, 577c2803b98SJean Delvare &sensor_dev_attr_in2_alarm.dev_attr.attr, 5780501a381SMark M. Hoffman &dev_attr_in3_input.attr, 5790501a381SMark M. Hoffman &dev_attr_in3_min.attr, 5800501a381SMark M. Hoffman &dev_attr_in3_max.attr, 581c2803b98SJean Delvare &sensor_dev_attr_in3_alarm.dev_attr.attr, 5820501a381SMark M. Hoffman &dev_attr_in4_input.attr, 5830501a381SMark M. Hoffman &dev_attr_in4_min.attr, 5840501a381SMark M. Hoffman &dev_attr_in4_max.attr, 585c2803b98SJean Delvare &sensor_dev_attr_in4_alarm.dev_attr.attr, 5860501a381SMark M. Hoffman 5870501a381SMark M. Hoffman &dev_attr_temp1_input.attr, 5880501a381SMark M. Hoffman &dev_attr_temp1_max.attr, 5890501a381SMark M. Hoffman &dev_attr_temp1_min.attr, 5900501a381SMark M. Hoffman &dev_attr_temp1_crit.attr, 591c2803b98SJean Delvare &sensor_dev_attr_temp1_alarm.dev_attr.attr, 5920501a381SMark M. Hoffman &dev_attr_temp2_input.attr, 5930501a381SMark M. Hoffman &dev_attr_temp2_max.attr, 5940501a381SMark M. Hoffman &dev_attr_temp2_min.attr, 5950501a381SMark M. Hoffman &dev_attr_temp2_crit.attr, 596c2803b98SJean Delvare &sensor_dev_attr_temp2_alarm.dev_attr.attr, 597c2803b98SJean Delvare &sensor_dev_attr_temp2_fault.dev_attr.attr, 5980501a381SMark M. Hoffman 5990501a381SMark M. Hoffman &dev_attr_alarms.attr, 6000501a381SMark M. Hoffman &dev_attr_aout_output.attr, 6010501a381SMark M. Hoffman 6020501a381SMark M. Hoffman NULL 6030501a381SMark M. Hoffman }; 6040501a381SMark M. Hoffman 6050501a381SMark M. Hoffman static const struct attribute_group lm87_group = { 6060501a381SMark M. Hoffman .attrs = lm87_attributes, 6070501a381SMark M. Hoffman }; 6080501a381SMark M. Hoffman 6090501a381SMark M. Hoffman static struct attribute *lm87_attributes_opt[] = { 6100501a381SMark M. Hoffman &dev_attr_in6_input.attr, 6110501a381SMark M. Hoffman &dev_attr_in6_min.attr, 6120501a381SMark M. Hoffman &dev_attr_in6_max.attr, 613c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr.attr, 6140501a381SMark M. Hoffman 6150501a381SMark M. Hoffman &dev_attr_fan1_input.attr, 6160501a381SMark M. Hoffman &dev_attr_fan1_min.attr, 6170501a381SMark M. Hoffman &dev_attr_fan1_div.attr, 618c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr.attr, 6190501a381SMark M. Hoffman 6200501a381SMark M. Hoffman &dev_attr_in7_input.attr, 6210501a381SMark M. Hoffman &dev_attr_in7_min.attr, 6220501a381SMark M. Hoffman &dev_attr_in7_max.attr, 623c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr.attr, 6240501a381SMark M. Hoffman 6250501a381SMark M. Hoffman &dev_attr_fan2_input.attr, 6260501a381SMark M. Hoffman &dev_attr_fan2_min.attr, 6270501a381SMark M. Hoffman &dev_attr_fan2_div.attr, 628c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr.attr, 6290501a381SMark M. Hoffman 6300501a381SMark M. Hoffman &dev_attr_temp3_input.attr, 6310501a381SMark M. Hoffman &dev_attr_temp3_max.attr, 6320501a381SMark M. Hoffman &dev_attr_temp3_min.attr, 6330501a381SMark M. Hoffman &dev_attr_temp3_crit.attr, 634c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr.attr, 635c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr.attr, 6360501a381SMark M. Hoffman 6370501a381SMark M. Hoffman &dev_attr_in0_input.attr, 6380501a381SMark M. Hoffman &dev_attr_in0_min.attr, 6390501a381SMark M. Hoffman &dev_attr_in0_max.attr, 640c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr.attr, 6410501a381SMark M. Hoffman &dev_attr_in5_input.attr, 6420501a381SMark M. Hoffman &dev_attr_in5_min.attr, 6430501a381SMark M. Hoffman &dev_attr_in5_max.attr, 644c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr.attr, 6450501a381SMark M. Hoffman 6460501a381SMark M. Hoffman &dev_attr_cpu0_vid.attr, 6470501a381SMark M. Hoffman &dev_attr_vrm.attr, 6480501a381SMark M. Hoffman 6490501a381SMark M. Hoffman NULL 6500501a381SMark M. Hoffman }; 6510501a381SMark M. Hoffman 6520501a381SMark M. Hoffman static const struct attribute_group lm87_group_opt = { 6530501a381SMark M. Hoffman .attrs = lm87_attributes_opt, 6540501a381SMark M. Hoffman }; 6550501a381SMark M. Hoffman 6568d5d45fbSJean Delvare /* 6578d5d45fbSJean Delvare * The following function does more than just detection. If detection 6588d5d45fbSJean Delvare * succeeds, it also registers the new chip. 6598d5d45fbSJean Delvare */ 6608d5d45fbSJean Delvare static int lm87_detect(struct i2c_adapter *adapter, int address, int kind) 6618d5d45fbSJean Delvare { 6628d5d45fbSJean Delvare struct i2c_client *new_client; 6638d5d45fbSJean Delvare struct lm87_data *data; 6648d5d45fbSJean Delvare int err = 0; 6658d5d45fbSJean Delvare 6668d5d45fbSJean Delvare if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 6678d5d45fbSJean Delvare goto exit; 6688d5d45fbSJean Delvare 669ba9c2e8dSDeepak Saxena if (!(data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL))) { 6708d5d45fbSJean Delvare err = -ENOMEM; 6718d5d45fbSJean Delvare goto exit; 6728d5d45fbSJean Delvare } 6738d5d45fbSJean Delvare 6748d5d45fbSJean Delvare /* The common I2C client data is placed right before the 6758d5d45fbSJean Delvare LM87-specific data. */ 6768d5d45fbSJean Delvare new_client = &data->client; 6778d5d45fbSJean Delvare i2c_set_clientdata(new_client, data); 6788d5d45fbSJean Delvare new_client->addr = address; 6798d5d45fbSJean Delvare new_client->adapter = adapter; 6808d5d45fbSJean Delvare new_client->driver = &lm87_driver; 6818d5d45fbSJean Delvare new_client->flags = 0; 6828d5d45fbSJean Delvare 6838d5d45fbSJean Delvare /* Default to an LM87 if forced */ 6848d5d45fbSJean Delvare if (kind == 0) 6858d5d45fbSJean Delvare kind = lm87; 6868d5d45fbSJean Delvare 6878d5d45fbSJean Delvare /* Now, we do the remaining detection. */ 6888d5d45fbSJean Delvare if (kind < 0) { 6898d5d45fbSJean Delvare u8 rev = lm87_read_value(new_client, LM87_REG_REVISION); 6908d5d45fbSJean Delvare 6918d5d45fbSJean Delvare if (rev < 0x01 || rev > 0x08 6928d5d45fbSJean Delvare || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80) 6938d5d45fbSJean Delvare || lm87_read_value(new_client, LM87_REG_COMPANY_ID) != 0x02) { 6948d5d45fbSJean Delvare dev_dbg(&adapter->dev, 6958d5d45fbSJean Delvare "LM87 detection failed at 0x%02x.\n", 6968d5d45fbSJean Delvare address); 6978d5d45fbSJean Delvare goto exit_free; 6988d5d45fbSJean Delvare } 6998d5d45fbSJean Delvare } 7008d5d45fbSJean Delvare 7018d5d45fbSJean Delvare /* We can fill in the remaining client fields */ 7028d5d45fbSJean Delvare strlcpy(new_client->name, "lm87", I2C_NAME_SIZE); 7038d5d45fbSJean Delvare data->valid = 0; 7049a61bf63SIngo Molnar mutex_init(&data->update_lock); 7058d5d45fbSJean Delvare 7068d5d45fbSJean Delvare /* Tell the I2C layer a new client has arrived */ 7078d5d45fbSJean Delvare if ((err = i2c_attach_client(new_client))) 7088d5d45fbSJean Delvare goto exit_free; 7098d5d45fbSJean Delvare 7108d5d45fbSJean Delvare /* Initialize the LM87 chip */ 7118d5d45fbSJean Delvare lm87_init_client(new_client); 7128d5d45fbSJean Delvare 7138d5d45fbSJean Delvare data->in_scale[0] = 2500; 7148d5d45fbSJean Delvare data->in_scale[1] = 2700; 7158d5d45fbSJean Delvare data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; 7168d5d45fbSJean Delvare data->in_scale[3] = 5000; 7178d5d45fbSJean Delvare data->in_scale[4] = 12000; 7188d5d45fbSJean Delvare data->in_scale[5] = 2700; 7198d5d45fbSJean Delvare data->in_scale[6] = 1875; 7208d5d45fbSJean Delvare data->in_scale[7] = 1875; 7218d5d45fbSJean Delvare 7228d5d45fbSJean Delvare /* Register sysfs hooks */ 7230501a381SMark M. Hoffman if ((err = sysfs_create_group(&new_client->dev.kobj, &lm87_group))) 724943b0830SMark M. Hoffman goto exit_detach; 7258d5d45fbSJean Delvare 7268d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(0)) { 7270501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7280501a381SMark M. Hoffman &dev_attr_in6_input)) 7290501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7300501a381SMark M. Hoffman &dev_attr_in6_min)) 7310501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 732c2803b98SJean Delvare &dev_attr_in6_max)) 733c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 734c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr))) 7350501a381SMark M. Hoffman goto exit_remove; 7368d5d45fbSJean Delvare } else { 7370501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7380501a381SMark M. Hoffman &dev_attr_fan1_input)) 7390501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7400501a381SMark M. Hoffman &dev_attr_fan1_min)) 7410501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 742c2803b98SJean Delvare &dev_attr_fan1_div)) 743c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 744c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr))) 7450501a381SMark M. Hoffman goto exit_remove; 7468d5d45fbSJean Delvare } 7478d5d45fbSJean Delvare 7480501a381SMark M. Hoffman if (data->channel & CHAN_NO_FAN(1)) { 7490501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7500501a381SMark M. Hoffman &dev_attr_in7_input)) 7510501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7520501a381SMark M. Hoffman &dev_attr_in7_min)) 7530501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 754c2803b98SJean Delvare &dev_attr_in7_max)) 755c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 756c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr))) 7570501a381SMark M. Hoffman goto exit_remove; 7580501a381SMark M. Hoffman } else { 7590501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7600501a381SMark M. Hoffman &dev_attr_fan2_input)) 7610501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7620501a381SMark M. Hoffman &dev_attr_fan2_min)) 7630501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 764c2803b98SJean Delvare &dev_attr_fan2_div)) 765c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 766c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr))) 7670501a381SMark M. Hoffman goto exit_remove; 7680501a381SMark M. Hoffman } 7698d5d45fbSJean Delvare 7708d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 7710501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7720501a381SMark M. Hoffman &dev_attr_temp3_input)) 7730501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7740501a381SMark M. Hoffman &dev_attr_temp3_max)) 7750501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7760501a381SMark M. Hoffman &dev_attr_temp3_min)) 7770501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 778c2803b98SJean Delvare &dev_attr_temp3_crit)) 779c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 780c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr)) 781c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 782c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr))) 7830501a381SMark M. Hoffman goto exit_remove; 7848d5d45fbSJean Delvare } else { 7850501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 7860501a381SMark M. Hoffman &dev_attr_in0_input)) 7870501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7880501a381SMark M. Hoffman &dev_attr_in0_min)) 7890501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7900501a381SMark M. Hoffman &dev_attr_in0_max)) 7910501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 792c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr)) 793c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 7940501a381SMark M. Hoffman &dev_attr_in5_input)) 7950501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 7960501a381SMark M. Hoffman &dev_attr_in5_min)) 7970501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 798c2803b98SJean Delvare &dev_attr_in5_max)) 799c2803b98SJean Delvare || (err = device_create_file(&new_client->dev, 800c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr))) 8010501a381SMark M. Hoffman goto exit_remove; 8028d5d45fbSJean Delvare } 8038d5d45fbSJean Delvare 8048d5d45fbSJean Delvare if (!(data->channel & CHAN_NO_VID)) { 8058a665a05SJean Delvare data->vrm = vid_which_vrm(); 8060501a381SMark M. Hoffman if ((err = device_create_file(&new_client->dev, 8070501a381SMark M. Hoffman &dev_attr_cpu0_vid)) 8080501a381SMark M. Hoffman || (err = device_create_file(&new_client->dev, 8090501a381SMark M. Hoffman &dev_attr_vrm))) 8100501a381SMark M. Hoffman goto exit_remove; 8118d5d45fbSJean Delvare } 8128d5d45fbSJean Delvare 8131beeffe4STony Jones data->hwmon_dev = hwmon_device_register(&new_client->dev); 8141beeffe4STony Jones if (IS_ERR(data->hwmon_dev)) { 8151beeffe4STony Jones err = PTR_ERR(data->hwmon_dev); 8160501a381SMark M. Hoffman goto exit_remove; 8170501a381SMark M. Hoffman } 8188d5d45fbSJean Delvare 8198d5d45fbSJean Delvare return 0; 8208d5d45fbSJean Delvare 8210501a381SMark M. Hoffman exit_remove: 8220501a381SMark M. Hoffman sysfs_remove_group(&new_client->dev.kobj, &lm87_group); 8230501a381SMark M. Hoffman sysfs_remove_group(&new_client->dev.kobj, &lm87_group_opt); 824943b0830SMark M. Hoffman exit_detach: 825943b0830SMark M. Hoffman i2c_detach_client(new_client); 8268d5d45fbSJean Delvare exit_free: 8278d5d45fbSJean Delvare kfree(data); 8288d5d45fbSJean Delvare exit: 8298d5d45fbSJean Delvare return err; 8308d5d45fbSJean Delvare } 8318d5d45fbSJean Delvare 8328d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client) 8338d5d45fbSJean Delvare { 8348d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 8358d5d45fbSJean Delvare u8 config; 8368d5d45fbSJean Delvare 8378d5d45fbSJean Delvare data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); 8388d5d45fbSJean Delvare 8398d5d45fbSJean Delvare config = lm87_read_value(client, LM87_REG_CONFIG); 8408d5d45fbSJean Delvare if (!(config & 0x01)) { 8418d5d45fbSJean Delvare int i; 8428d5d45fbSJean Delvare 8438d5d45fbSJean Delvare /* Limits are left uninitialized after power-up */ 8448d5d45fbSJean Delvare for (i = 1; i < 6; i++) { 8458d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); 8468d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); 8478d5d45fbSJean Delvare } 8488d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 8498d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); 8508d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); 8518d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); 8528d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); 8538d5d45fbSJean Delvare } 8548d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 8558d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); 8568d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); 8578d5d45fbSJean Delvare } else { 8588d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); 8598d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); 8608d5d45fbSJean Delvare } 8618d5d45fbSJean Delvare } 8628d5d45fbSJean Delvare if ((config & 0x81) != 0x01) { 8638d5d45fbSJean Delvare /* Start monitoring */ 8648d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_CONFIG, 8658d5d45fbSJean Delvare (config & 0xF7) | 0x01); 8668d5d45fbSJean Delvare } 8678d5d45fbSJean Delvare } 8688d5d45fbSJean Delvare 8698d5d45fbSJean Delvare static int lm87_detach_client(struct i2c_client *client) 8708d5d45fbSJean Delvare { 871943b0830SMark M. Hoffman struct lm87_data *data = i2c_get_clientdata(client); 8728d5d45fbSJean Delvare int err; 8738d5d45fbSJean Delvare 8741beeffe4STony Jones hwmon_device_unregister(data->hwmon_dev); 8750501a381SMark M. Hoffman sysfs_remove_group(&client->dev.kobj, &lm87_group); 8760501a381SMark M. Hoffman sysfs_remove_group(&client->dev.kobj, &lm87_group_opt); 877943b0830SMark M. Hoffman 8787bef5594SJean Delvare if ((err = i2c_detach_client(client))) 8798d5d45fbSJean Delvare return err; 8808d5d45fbSJean Delvare 881943b0830SMark M. Hoffman kfree(data); 8828d5d45fbSJean Delvare return 0; 8838d5d45fbSJean Delvare } 8848d5d45fbSJean Delvare 8858d5d45fbSJean Delvare static struct lm87_data *lm87_update_device(struct device *dev) 8868d5d45fbSJean Delvare { 8878d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 8888d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 8898d5d45fbSJean Delvare 8909a61bf63SIngo Molnar mutex_lock(&data->update_lock); 8918d5d45fbSJean Delvare 8928d5d45fbSJean Delvare if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 8938d5d45fbSJean Delvare int i, j; 8948d5d45fbSJean Delvare 8958d5d45fbSJean Delvare dev_dbg(&client->dev, "Updating data.\n"); 8968d5d45fbSJean Delvare 8978d5d45fbSJean Delvare i = (data->channel & CHAN_TEMP3) ? 1 : 0; 8988d5d45fbSJean Delvare j = (data->channel & CHAN_TEMP3) ? 5 : 6; 8998d5d45fbSJean Delvare for (; i < j; i++) { 9008d5d45fbSJean Delvare data->in[i] = lm87_read_value(client, 9018d5d45fbSJean Delvare LM87_REG_IN(i)); 9028d5d45fbSJean Delvare data->in_min[i] = lm87_read_value(client, 9038d5d45fbSJean Delvare LM87_REG_IN_MIN(i)); 9048d5d45fbSJean Delvare data->in_max[i] = lm87_read_value(client, 9058d5d45fbSJean Delvare LM87_REG_IN_MAX(i)); 9068d5d45fbSJean Delvare } 9078d5d45fbSJean Delvare 9088d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 9098d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(i)) { 9108d5d45fbSJean Delvare data->in[6+i] = lm87_read_value(client, 9118d5d45fbSJean Delvare LM87_REG_AIN(i)); 9128d5d45fbSJean Delvare data->in_max[6+i] = lm87_read_value(client, 9138d5d45fbSJean Delvare LM87_REG_AIN_MAX(i)); 9148d5d45fbSJean Delvare data->in_min[6+i] = lm87_read_value(client, 9158d5d45fbSJean Delvare LM87_REG_AIN_MIN(i)); 9168d5d45fbSJean Delvare 9178d5d45fbSJean Delvare } else { 9188d5d45fbSJean Delvare data->fan[i] = lm87_read_value(client, 9198d5d45fbSJean Delvare LM87_REG_FAN(i)); 9208d5d45fbSJean Delvare data->fan_min[i] = lm87_read_value(client, 9218d5d45fbSJean Delvare LM87_REG_FAN_MIN(i)); 9228d5d45fbSJean Delvare } 9238d5d45fbSJean Delvare } 9248d5d45fbSJean Delvare 9258d5d45fbSJean Delvare j = (data->channel & CHAN_TEMP3) ? 3 : 2; 9268d5d45fbSJean Delvare for (i = 0 ; i < j; i++) { 9278d5d45fbSJean Delvare data->temp[i] = lm87_read_value(client, 9288d5d45fbSJean Delvare LM87_REG_TEMP[i]); 9298d5d45fbSJean Delvare data->temp_high[i] = lm87_read_value(client, 9308d5d45fbSJean Delvare LM87_REG_TEMP_HIGH[i]); 9318d5d45fbSJean Delvare data->temp_low[i] = lm87_read_value(client, 9328d5d45fbSJean Delvare LM87_REG_TEMP_LOW[i]); 9338d5d45fbSJean Delvare } 9348d5d45fbSJean Delvare 9358d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); 9368d5d45fbSJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); 9378d5d45fbSJean Delvare data->temp_crit_int = min(i, j); 9388d5d45fbSJean Delvare 9398d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); 9408d5d45fbSJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); 9418d5d45fbSJean Delvare data->temp_crit_ext = min(i, j); 9428d5d45fbSJean Delvare 9438d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 9448d5d45fbSJean Delvare data->fan_div[0] = (i >> 4) & 0x03; 9458d5d45fbSJean Delvare data->fan_div[1] = (i >> 6) & 0x03; 9468d5d45fbSJean Delvare data->vid = (i & 0x0F) 9478d5d45fbSJean Delvare | (lm87_read_value(client, LM87_REG_VID4) & 0x01) 9488d5d45fbSJean Delvare << 4; 9498d5d45fbSJean Delvare 9508d5d45fbSJean Delvare data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) 9518d5d45fbSJean Delvare | (lm87_read_value(client, LM87_REG_ALARMS2) 9528d5d45fbSJean Delvare << 8); 9538d5d45fbSJean Delvare data->aout = lm87_read_value(client, LM87_REG_AOUT); 9548d5d45fbSJean Delvare 9558d5d45fbSJean Delvare data->last_updated = jiffies; 9568d5d45fbSJean Delvare data->valid = 1; 9578d5d45fbSJean Delvare } 9588d5d45fbSJean Delvare 9599a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 9608d5d45fbSJean Delvare 9618d5d45fbSJean Delvare return data; 9628d5d45fbSJean Delvare } 9638d5d45fbSJean Delvare 9648d5d45fbSJean Delvare static int __init sensors_lm87_init(void) 9658d5d45fbSJean Delvare { 9668d5d45fbSJean Delvare return i2c_add_driver(&lm87_driver); 9678d5d45fbSJean Delvare } 9688d5d45fbSJean Delvare 9698d5d45fbSJean Delvare static void __exit sensors_lm87_exit(void) 9708d5d45fbSJean Delvare { 9718d5d45fbSJean Delvare i2c_del_driver(&lm87_driver); 9728d5d45fbSJean Delvare } 9738d5d45fbSJean Delvare 9748d5d45fbSJean Delvare MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others"); 9758d5d45fbSJean Delvare MODULE_DESCRIPTION("LM87 driver"); 9768d5d45fbSJean Delvare MODULE_LICENSE("GPL"); 9778d5d45fbSJean Delvare 9788d5d45fbSJean Delvare module_init(sensors_lm87_init); 9798d5d45fbSJean Delvare module_exit(sensors_lm87_exit); 980