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> 61303760b4SJean Delvare #include <linux/hwmon-vid.h> 62943b0830SMark M. Hoffman #include <linux/err.h> 638d5d45fbSJean Delvare 648d5d45fbSJean Delvare /* 658d5d45fbSJean Delvare * Addresses to scan 668d5d45fbSJean Delvare * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. 678d5d45fbSJean Delvare */ 688d5d45fbSJean Delvare 698d5d45fbSJean Delvare static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 708d5d45fbSJean Delvare 718d5d45fbSJean Delvare /* 728d5d45fbSJean Delvare * Insmod parameters 738d5d45fbSJean Delvare */ 748d5d45fbSJean Delvare 75f4b50261SJean Delvare I2C_CLIENT_INSMOD_1(lm87); 768d5d45fbSJean Delvare 778d5d45fbSJean Delvare /* 788d5d45fbSJean Delvare * The LM87 registers 798d5d45fbSJean Delvare */ 808d5d45fbSJean Delvare 818d5d45fbSJean Delvare /* nr in 0..5 */ 828d5d45fbSJean Delvare #define LM87_REG_IN(nr) (0x20 + (nr)) 838d5d45fbSJean Delvare #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) 848d5d45fbSJean Delvare #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) 858d5d45fbSJean Delvare /* nr in 0..1 */ 868d5d45fbSJean Delvare #define LM87_REG_AIN(nr) (0x28 + (nr)) 878d5d45fbSJean Delvare #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) 888d5d45fbSJean Delvare #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) 898d5d45fbSJean Delvare 908d5d45fbSJean Delvare static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; 918d5d45fbSJean Delvare static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; 928d5d45fbSJean Delvare static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; 938d5d45fbSJean Delvare 948d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT_LOCK 0x13 958d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 968d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT 0x17 978d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT 0x18 988d5d45fbSJean Delvare 998d5d45fbSJean Delvare /* nr in 0..1 */ 1008d5d45fbSJean Delvare #define LM87_REG_FAN(nr) (0x28 + (nr)) 1018d5d45fbSJean Delvare #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) 1028d5d45fbSJean Delvare #define LM87_REG_AOUT 0x19 1038d5d45fbSJean Delvare 1048d5d45fbSJean Delvare #define LM87_REG_CONFIG 0x40 1058d5d45fbSJean Delvare #define LM87_REG_CHANNEL_MODE 0x16 1068d5d45fbSJean Delvare #define LM87_REG_VID_FAN_DIV 0x47 1078d5d45fbSJean Delvare #define LM87_REG_VID4 0x49 1088d5d45fbSJean Delvare 1098d5d45fbSJean Delvare #define LM87_REG_ALARMS1 0x41 1108d5d45fbSJean Delvare #define LM87_REG_ALARMS2 0x42 1118d5d45fbSJean Delvare 1128d5d45fbSJean Delvare #define LM87_REG_COMPANY_ID 0x3E 1138d5d45fbSJean Delvare #define LM87_REG_REVISION 0x3F 1148d5d45fbSJean Delvare 1158d5d45fbSJean Delvare /* 1168d5d45fbSJean Delvare * Conversions and various macros 1178d5d45fbSJean Delvare * The LM87 uses signed 8-bit values for temperatures. 1188d5d45fbSJean Delvare */ 1198d5d45fbSJean Delvare 1208d5d45fbSJean Delvare #define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192) 1218d5d45fbSJean Delvare #define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \ 1228d5d45fbSJean Delvare (val) * 192 >= (scale) * 255 ? 255 : \ 1238d5d45fbSJean Delvare ((val) * 192 + (scale)/2) / (scale)) 1248d5d45fbSJean Delvare 1258d5d45fbSJean Delvare #define TEMP_FROM_REG(reg) ((reg) * 1000) 1268d5d45fbSJean Delvare #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ 1278d5d45fbSJean Delvare (val) >= 126500 ? 127 : \ 1288d5d45fbSJean Delvare (((val) < 0 ? (val)-500 : (val)+500) / 1000)) 1298d5d45fbSJean Delvare 1308d5d45fbSJean Delvare #define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \ 1318d5d45fbSJean Delvare 1350000 + (reg)*(div) / 2) / ((reg)*(div)) 1328d5d45fbSJean Delvare #define FAN_TO_REG(val,div) ((val)*(div) * 255 <= 1350000 ? 255 : \ 1338d5d45fbSJean Delvare (1350000 + (val)*(div) / 2) / ((val)*(div))) 1348d5d45fbSJean Delvare 1358d5d45fbSJean Delvare #define FAN_DIV_FROM_REG(reg) (1 << (reg)) 1368d5d45fbSJean Delvare 1378d5d45fbSJean Delvare /* analog out is 9.80mV/LSB */ 1388d5d45fbSJean Delvare #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) 1398d5d45fbSJean Delvare #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ 1408d5d45fbSJean Delvare (val) >= 2500 ? 255 : \ 1418d5d45fbSJean Delvare ((val) * 10 + 49) / 98) 1428d5d45fbSJean Delvare 1438d5d45fbSJean Delvare /* nr in 0..1 */ 1448d5d45fbSJean Delvare #define CHAN_NO_FAN(nr) (1 << (nr)) 1458d5d45fbSJean Delvare #define CHAN_TEMP3 (1 << 2) 1468d5d45fbSJean Delvare #define CHAN_VCC_5V (1 << 3) 1478d5d45fbSJean Delvare #define CHAN_NO_VID (1 << 8) 1488d5d45fbSJean Delvare 1498d5d45fbSJean Delvare /* 1508d5d45fbSJean Delvare * Functions declaration 1518d5d45fbSJean Delvare */ 1528d5d45fbSJean Delvare 1538d5d45fbSJean Delvare static int lm87_attach_adapter(struct i2c_adapter *adapter); 1548d5d45fbSJean Delvare static int lm87_detect(struct i2c_adapter *adapter, int address, int kind); 1558d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client); 1568d5d45fbSJean Delvare static int lm87_detach_client(struct i2c_client *client); 1578d5d45fbSJean Delvare static struct lm87_data *lm87_update_device(struct device *dev); 1588d5d45fbSJean Delvare 1598d5d45fbSJean Delvare /* 1608d5d45fbSJean Delvare * Driver data (common to all clients) 1618d5d45fbSJean Delvare */ 1628d5d45fbSJean Delvare 1638d5d45fbSJean Delvare static struct i2c_driver lm87_driver = { 1648d5d45fbSJean Delvare .owner = THIS_MODULE, 1658d5d45fbSJean Delvare .name = "lm87", 1668d5d45fbSJean Delvare .id = I2C_DRIVERID_LM87, 1678d5d45fbSJean Delvare .flags = I2C_DF_NOTIFY, 1688d5d45fbSJean Delvare .attach_adapter = lm87_attach_adapter, 1698d5d45fbSJean Delvare .detach_client = lm87_detach_client, 1708d5d45fbSJean Delvare }; 1718d5d45fbSJean Delvare 1728d5d45fbSJean Delvare /* 1738d5d45fbSJean Delvare * Client data (each client gets its own) 1748d5d45fbSJean Delvare */ 1758d5d45fbSJean Delvare 1768d5d45fbSJean Delvare struct lm87_data { 1778d5d45fbSJean Delvare struct i2c_client client; 178943b0830SMark M. Hoffman struct class_device *class_dev; 1798d5d45fbSJean Delvare struct semaphore update_lock; 1808d5d45fbSJean Delvare char valid; /* zero until following fields are valid */ 1818d5d45fbSJean Delvare unsigned long last_updated; /* In jiffies */ 1828d5d45fbSJean Delvare 1838d5d45fbSJean Delvare u8 channel; /* register value */ 1848d5d45fbSJean Delvare 1858d5d45fbSJean Delvare u8 in[8]; /* register value */ 1868d5d45fbSJean Delvare u8 in_max[8]; /* register value */ 1878d5d45fbSJean Delvare u8 in_min[8]; /* register value */ 1888d5d45fbSJean Delvare u16 in_scale[8]; 1898d5d45fbSJean Delvare 1908d5d45fbSJean Delvare s8 temp[3]; /* register value */ 1918d5d45fbSJean Delvare s8 temp_high[3]; /* register value */ 1928d5d45fbSJean Delvare s8 temp_low[3]; /* register value */ 1938d5d45fbSJean Delvare s8 temp_crit_int; /* min of two register values */ 1948d5d45fbSJean Delvare s8 temp_crit_ext; /* min of two register values */ 1958d5d45fbSJean Delvare 1968d5d45fbSJean Delvare u8 fan[2]; /* register value */ 1978d5d45fbSJean Delvare u8 fan_min[2]; /* register value */ 1988d5d45fbSJean Delvare u8 fan_div[2]; /* register value, shifted right */ 1998d5d45fbSJean Delvare u8 aout; /* register value */ 2008d5d45fbSJean Delvare 2018d5d45fbSJean Delvare u16 alarms; /* register values, combined */ 2028d5d45fbSJean Delvare u8 vid; /* register values, combined */ 2038d5d45fbSJean Delvare u8 vrm; 2048d5d45fbSJean Delvare }; 2058d5d45fbSJean Delvare 2068d5d45fbSJean Delvare /* 2078d5d45fbSJean Delvare * Sysfs stuff 2088d5d45fbSJean Delvare */ 2098d5d45fbSJean Delvare 2108d5d45fbSJean Delvare static inline int lm87_read_value(struct i2c_client *client, u8 reg) 2118d5d45fbSJean Delvare { 2128d5d45fbSJean Delvare return i2c_smbus_read_byte_data(client, reg); 2138d5d45fbSJean Delvare } 2148d5d45fbSJean Delvare 2158d5d45fbSJean Delvare static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) 2168d5d45fbSJean Delvare { 2178d5d45fbSJean Delvare return i2c_smbus_write_byte_data(client, reg, value); 2188d5d45fbSJean Delvare } 2198d5d45fbSJean Delvare 2208d5d45fbSJean Delvare #define show_in(offset) \ 2218d5d45fbSJean Delvare static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 2228d5d45fbSJean Delvare { \ 2238d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2248d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \ 2258d5d45fbSJean Delvare data->in_scale[offset])); \ 2268d5d45fbSJean Delvare } \ 2278d5d45fbSJean Delvare static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ 2288d5d45fbSJean Delvare { \ 2298d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2308d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \ 2318d5d45fbSJean Delvare data->in_scale[offset])); \ 2328d5d45fbSJean Delvare } \ 2338d5d45fbSJean Delvare static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \ 2348d5d45fbSJean Delvare { \ 2358d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 2368d5d45fbSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \ 2378d5d45fbSJean Delvare data->in_scale[offset])); \ 2388d5d45fbSJean Delvare } \ 2398d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 2408d5d45fbSJean Delvare show_in##offset##_input, NULL); 2418d5d45fbSJean Delvare show_in(0); 2428d5d45fbSJean Delvare show_in(1); 2438d5d45fbSJean Delvare show_in(2); 2448d5d45fbSJean Delvare show_in(3); 2458d5d45fbSJean Delvare show_in(4); 2468d5d45fbSJean Delvare show_in(5); 2478d5d45fbSJean Delvare show_in(6); 2488d5d45fbSJean Delvare show_in(7); 2498d5d45fbSJean Delvare 2508d5d45fbSJean Delvare static void set_in_min(struct device *dev, const char *buf, int nr) 2518d5d45fbSJean Delvare { 2528d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 2538d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2548d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 2558d5d45fbSJean Delvare 2568d5d45fbSJean Delvare down(&data->update_lock); 2578d5d45fbSJean Delvare data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); 2588d5d45fbSJean Delvare lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) : 2598d5d45fbSJean Delvare LM87_REG_AIN_MIN(nr-6), data->in_min[nr]); 2608d5d45fbSJean Delvare up(&data->update_lock); 2618d5d45fbSJean Delvare } 2628d5d45fbSJean Delvare 2638d5d45fbSJean Delvare static void set_in_max(struct device *dev, const char *buf, int nr) 2648d5d45fbSJean Delvare { 2658d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 2668d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2678d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 2688d5d45fbSJean Delvare 2698d5d45fbSJean Delvare down(&data->update_lock); 2708d5d45fbSJean Delvare data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); 2718d5d45fbSJean Delvare lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) : 2728d5d45fbSJean Delvare LM87_REG_AIN_MAX(nr-6), data->in_max[nr]); 2738d5d45fbSJean Delvare up(&data->update_lock); 2748d5d45fbSJean Delvare } 2758d5d45fbSJean Delvare 2768d5d45fbSJean Delvare #define set_in(offset) \ 2778d5d45fbSJean Delvare static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, \ 2788d5d45fbSJean Delvare const char *buf, size_t count) \ 2798d5d45fbSJean Delvare { \ 2808d5d45fbSJean Delvare set_in_min(dev, buf, offset); \ 2818d5d45fbSJean Delvare return count; \ 2828d5d45fbSJean Delvare } \ 2838d5d45fbSJean Delvare static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, \ 2848d5d45fbSJean Delvare const char *buf, size_t count) \ 2858d5d45fbSJean Delvare { \ 2868d5d45fbSJean Delvare set_in_max(dev, buf, offset); \ 2878d5d45fbSJean Delvare return count; \ 2888d5d45fbSJean Delvare } \ 2898d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 2908d5d45fbSJean Delvare show_in##offset##_min, set_in##offset##_min); \ 2918d5d45fbSJean Delvare static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 2928d5d45fbSJean Delvare show_in##offset##_max, set_in##offset##_max); 2938d5d45fbSJean Delvare set_in(0); 2948d5d45fbSJean Delvare set_in(1); 2958d5d45fbSJean Delvare set_in(2); 2968d5d45fbSJean Delvare set_in(3); 2978d5d45fbSJean Delvare set_in(4); 2988d5d45fbSJean Delvare set_in(5); 2998d5d45fbSJean Delvare set_in(6); 3008d5d45fbSJean Delvare set_in(7); 3018d5d45fbSJean Delvare 3028d5d45fbSJean Delvare #define show_temp(offset) \ 3038d5d45fbSJean Delvare static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 3048d5d45fbSJean Delvare { \ 3058d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3068d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \ 3078d5d45fbSJean Delvare } \ 3088d5d45fbSJean Delvare static ssize_t show_temp##offset##_low(struct device *dev, struct device_attribute *attr, char *buf) \ 3098d5d45fbSJean Delvare { \ 3108d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3118d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[offset-1])); \ 3128d5d45fbSJean Delvare } \ 3138d5d45fbSJean Delvare static ssize_t show_temp##offset##_high(struct device *dev, struct device_attribute *attr, char *buf) \ 3148d5d45fbSJean Delvare { \ 3158d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3168d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[offset-1])); \ 3178d5d45fbSJean Delvare }\ 3188d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 3198d5d45fbSJean Delvare show_temp##offset##_input, NULL); 3208d5d45fbSJean Delvare show_temp(1); 3218d5d45fbSJean Delvare show_temp(2); 3228d5d45fbSJean Delvare show_temp(3); 3238d5d45fbSJean Delvare 3248d5d45fbSJean Delvare static void set_temp_low(struct device *dev, const char *buf, int nr) 3258d5d45fbSJean Delvare { 3268d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3278d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3288d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 3298d5d45fbSJean Delvare 3308d5d45fbSJean Delvare down(&data->update_lock); 3318d5d45fbSJean Delvare data->temp_low[nr] = TEMP_TO_REG(val); 3328d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); 3338d5d45fbSJean Delvare up(&data->update_lock); 3348d5d45fbSJean Delvare } 3358d5d45fbSJean Delvare 3368d5d45fbSJean Delvare static void set_temp_high(struct device *dev, const char *buf, int nr) 3378d5d45fbSJean Delvare { 3388d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3398d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3408d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 3418d5d45fbSJean Delvare 3428d5d45fbSJean Delvare down(&data->update_lock); 3438d5d45fbSJean Delvare data->temp_high[nr] = TEMP_TO_REG(val); 3448d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); 3458d5d45fbSJean Delvare up(&data->update_lock); 3468d5d45fbSJean Delvare } 3478d5d45fbSJean Delvare 3488d5d45fbSJean Delvare #define set_temp(offset) \ 3498d5d45fbSJean Delvare static ssize_t set_temp##offset##_low(struct device *dev, struct device_attribute *attr, \ 3508d5d45fbSJean Delvare const char *buf, size_t count) \ 3518d5d45fbSJean Delvare { \ 3528d5d45fbSJean Delvare set_temp_low(dev, buf, offset-1); \ 3538d5d45fbSJean Delvare return count; \ 3548d5d45fbSJean Delvare } \ 3558d5d45fbSJean Delvare static ssize_t set_temp##offset##_high(struct device *dev, struct device_attribute *attr, \ 3568d5d45fbSJean Delvare const char *buf, size_t count) \ 3578d5d45fbSJean Delvare { \ 3588d5d45fbSJean Delvare set_temp_high(dev, buf, offset-1); \ 3598d5d45fbSJean Delvare return count; \ 3608d5d45fbSJean Delvare } \ 3618d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 3628d5d45fbSJean Delvare show_temp##offset##_high, set_temp##offset##_high); \ 3638d5d45fbSJean Delvare static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 3648d5d45fbSJean Delvare show_temp##offset##_low, set_temp##offset##_low); 3658d5d45fbSJean Delvare set_temp(1); 3668d5d45fbSJean Delvare set_temp(2); 3678d5d45fbSJean Delvare set_temp(3); 3688d5d45fbSJean Delvare 3698d5d45fbSJean Delvare static ssize_t show_temp_crit_int(struct device *dev, struct device_attribute *attr, char *buf) 3708d5d45fbSJean Delvare { 3718d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3728d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); 3738d5d45fbSJean Delvare } 3748d5d45fbSJean Delvare 3758d5d45fbSJean Delvare static ssize_t show_temp_crit_ext(struct device *dev, struct device_attribute *attr, char *buf) 3768d5d45fbSJean Delvare { 3778d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3788d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); 3798d5d45fbSJean Delvare } 3808d5d45fbSJean Delvare 3818d5d45fbSJean Delvare static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); 3828d5d45fbSJean Delvare static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); 3838d5d45fbSJean Delvare static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); 3848d5d45fbSJean Delvare 3858d5d45fbSJean Delvare #define show_fan(offset) \ 3868d5d45fbSJean Delvare static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ 3878d5d45fbSJean Delvare { \ 3888d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3898d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset-1], \ 3908d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ 3918d5d45fbSJean Delvare } \ 3928d5d45fbSJean Delvare static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ 3938d5d45fbSJean Delvare { \ 3948d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 3958d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset-1], \ 3968d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ 3978d5d45fbSJean Delvare } \ 3988d5d45fbSJean Delvare static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \ 3998d5d45fbSJean Delvare { \ 4008d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); \ 4018d5d45fbSJean Delvare return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[offset-1])); \ 4028d5d45fbSJean Delvare } \ 4038d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 4048d5d45fbSJean Delvare show_fan##offset##_input, NULL); 4058d5d45fbSJean Delvare show_fan(1); 4068d5d45fbSJean Delvare show_fan(2); 4078d5d45fbSJean Delvare 4088d5d45fbSJean Delvare static void set_fan_min(struct device *dev, const char *buf, int nr) 4098d5d45fbSJean Delvare { 4108d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4118d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4128d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 4138d5d45fbSJean Delvare 4148d5d45fbSJean Delvare down(&data->update_lock); 4158d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(val, 4168d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4178d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); 4188d5d45fbSJean Delvare up(&data->update_lock); 4198d5d45fbSJean Delvare } 4208d5d45fbSJean Delvare 4218d5d45fbSJean Delvare /* Note: we save and restore the fan minimum here, because its value is 4228d5d45fbSJean Delvare determined in part by the fan clock divider. This follows the principle 4238d5d45fbSJean Delvare of least suprise; the user doesn't expect the fan minimum to change just 4248d5d45fbSJean Delvare because the divider changed. */ 4258d5d45fbSJean Delvare static ssize_t set_fan_div(struct device *dev, const char *buf, 4268d5d45fbSJean Delvare size_t count, int nr) 4278d5d45fbSJean Delvare { 4288d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4298d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4308d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 4318d5d45fbSJean Delvare unsigned long min; 4328d5d45fbSJean Delvare u8 reg; 4338d5d45fbSJean Delvare 4348d5d45fbSJean Delvare down(&data->update_lock); 4358d5d45fbSJean Delvare min = FAN_FROM_REG(data->fan_min[nr], 4368d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4378d5d45fbSJean Delvare 4388d5d45fbSJean Delvare switch (val) { 4398d5d45fbSJean Delvare case 1: data->fan_div[nr] = 0; break; 4408d5d45fbSJean Delvare case 2: data->fan_div[nr] = 1; break; 4418d5d45fbSJean Delvare case 4: data->fan_div[nr] = 2; break; 4428d5d45fbSJean Delvare case 8: data->fan_div[nr] = 3; break; 4438d5d45fbSJean Delvare default: 4448d5d45fbSJean Delvare up(&data->update_lock); 4458d5d45fbSJean Delvare return -EINVAL; 4468d5d45fbSJean Delvare } 4478d5d45fbSJean Delvare 4488d5d45fbSJean Delvare reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 4498d5d45fbSJean Delvare switch (nr) { 4508d5d45fbSJean Delvare case 0: 4518d5d45fbSJean Delvare reg = (reg & 0xCF) | (data->fan_div[0] << 4); 4528d5d45fbSJean Delvare break; 4538d5d45fbSJean Delvare case 1: 4548d5d45fbSJean Delvare reg = (reg & 0x3F) | (data->fan_div[1] << 6); 4558d5d45fbSJean Delvare break; 4568d5d45fbSJean Delvare } 4578d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); 4588d5d45fbSJean Delvare 4598d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(min, val); 4608d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), 4618d5d45fbSJean Delvare data->fan_min[nr]); 4628d5d45fbSJean Delvare up(&data->update_lock); 4638d5d45fbSJean Delvare 4648d5d45fbSJean Delvare return count; 4658d5d45fbSJean Delvare } 4668d5d45fbSJean Delvare 4678d5d45fbSJean Delvare #define set_fan(offset) \ 4688d5d45fbSJean Delvare static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \ 4698d5d45fbSJean Delvare size_t count) \ 4708d5d45fbSJean Delvare { \ 4718d5d45fbSJean Delvare set_fan_min(dev, buf, offset-1); \ 4728d5d45fbSJean Delvare return count; \ 4738d5d45fbSJean Delvare } \ 4748d5d45fbSJean Delvare static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \ 4758d5d45fbSJean Delvare size_t count) \ 4768d5d45fbSJean Delvare { \ 4778d5d45fbSJean Delvare return set_fan_div(dev, buf, count, offset-1); \ 4788d5d45fbSJean Delvare } \ 4798d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 4808d5d45fbSJean Delvare show_fan##offset##_min, set_fan##offset##_min); \ 4818d5d45fbSJean Delvare static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 4828d5d45fbSJean Delvare show_fan##offset##_div, set_fan##offset##_div); 4838d5d45fbSJean Delvare set_fan(1); 4848d5d45fbSJean Delvare set_fan(2); 4858d5d45fbSJean Delvare 4868d5d45fbSJean Delvare static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) 4878d5d45fbSJean Delvare { 4888d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4898d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->alarms); 4908d5d45fbSJean Delvare } 4918d5d45fbSJean Delvare static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 4928d5d45fbSJean Delvare 4938d5d45fbSJean Delvare static ssize_t show_vid(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", vid_from_reg(data->vid, data->vrm)); 4978d5d45fbSJean Delvare } 4988d5d45fbSJean Delvare static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); 4998d5d45fbSJean Delvare 5008d5d45fbSJean Delvare static ssize_t show_vrm(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", data->vrm); 5048d5d45fbSJean Delvare } 5058d5d45fbSJean Delvare static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 5068d5d45fbSJean Delvare { 5078d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 5088d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5098d5d45fbSJean Delvare data->vrm = simple_strtoul(buf, NULL, 10); 5108d5d45fbSJean Delvare return count; 5118d5d45fbSJean Delvare } 5128d5d45fbSJean Delvare static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); 5138d5d45fbSJean Delvare 5148d5d45fbSJean Delvare static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf) 5158d5d45fbSJean Delvare { 5168d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5178d5d45fbSJean Delvare return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); 5188d5d45fbSJean Delvare } 5198d5d45fbSJean Delvare static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) 5208d5d45fbSJean Delvare { 5218d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 5228d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5238d5d45fbSJean Delvare long val = simple_strtol(buf, NULL, 10); 5248d5d45fbSJean Delvare 5258d5d45fbSJean Delvare down(&data->update_lock); 5268d5d45fbSJean Delvare data->aout = AOUT_TO_REG(val); 5278d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AOUT, data->aout); 5288d5d45fbSJean Delvare up(&data->update_lock); 5298d5d45fbSJean Delvare return count; 5308d5d45fbSJean Delvare } 5318d5d45fbSJean Delvare static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); 5328d5d45fbSJean Delvare 5338d5d45fbSJean Delvare /* 5348d5d45fbSJean Delvare * Real code 5358d5d45fbSJean Delvare */ 5368d5d45fbSJean Delvare 5378d5d45fbSJean Delvare static int lm87_attach_adapter(struct i2c_adapter *adapter) 5388d5d45fbSJean Delvare { 5398d5d45fbSJean Delvare if (!(adapter->class & I2C_CLASS_HWMON)) 5408d5d45fbSJean Delvare return 0; 5412ed2dc3cSJean Delvare return i2c_probe(adapter, &addr_data, lm87_detect); 5428d5d45fbSJean Delvare } 5438d5d45fbSJean Delvare 5448d5d45fbSJean Delvare /* 5458d5d45fbSJean Delvare * The following function does more than just detection. If detection 5468d5d45fbSJean Delvare * succeeds, it also registers the new chip. 5478d5d45fbSJean Delvare */ 5488d5d45fbSJean Delvare static int lm87_detect(struct i2c_adapter *adapter, int address, int kind) 5498d5d45fbSJean Delvare { 5508d5d45fbSJean Delvare struct i2c_client *new_client; 5518d5d45fbSJean Delvare struct lm87_data *data; 5528d5d45fbSJean Delvare int err = 0; 5538d5d45fbSJean Delvare 5548d5d45fbSJean Delvare if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 5558d5d45fbSJean Delvare goto exit; 5568d5d45fbSJean Delvare 5578d5d45fbSJean Delvare if (!(data = kmalloc(sizeof(struct lm87_data), GFP_KERNEL))) { 5588d5d45fbSJean Delvare err = -ENOMEM; 5598d5d45fbSJean Delvare goto exit; 5608d5d45fbSJean Delvare } 5618d5d45fbSJean Delvare memset(data, 0, sizeof(struct lm87_data)); 5628d5d45fbSJean Delvare 5638d5d45fbSJean Delvare /* The common I2C client data is placed right before the 5648d5d45fbSJean Delvare LM87-specific data. */ 5658d5d45fbSJean Delvare new_client = &data->client; 5668d5d45fbSJean Delvare i2c_set_clientdata(new_client, data); 5678d5d45fbSJean Delvare new_client->addr = address; 5688d5d45fbSJean Delvare new_client->adapter = adapter; 5698d5d45fbSJean Delvare new_client->driver = &lm87_driver; 5708d5d45fbSJean Delvare new_client->flags = 0; 5718d5d45fbSJean Delvare 5728d5d45fbSJean Delvare /* Default to an LM87 if forced */ 5738d5d45fbSJean Delvare if (kind == 0) 5748d5d45fbSJean Delvare kind = lm87; 5758d5d45fbSJean Delvare 5768d5d45fbSJean Delvare /* Now, we do the remaining detection. */ 5778d5d45fbSJean Delvare if (kind < 0) { 5788d5d45fbSJean Delvare u8 rev = lm87_read_value(new_client, LM87_REG_REVISION); 5798d5d45fbSJean Delvare 5808d5d45fbSJean Delvare if (rev < 0x01 || rev > 0x08 5818d5d45fbSJean Delvare || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80) 5828d5d45fbSJean Delvare || lm87_read_value(new_client, LM87_REG_COMPANY_ID) != 0x02) { 5838d5d45fbSJean Delvare dev_dbg(&adapter->dev, 5848d5d45fbSJean Delvare "LM87 detection failed at 0x%02x.\n", 5858d5d45fbSJean Delvare address); 5868d5d45fbSJean Delvare goto exit_free; 5878d5d45fbSJean Delvare } 5888d5d45fbSJean Delvare } 5898d5d45fbSJean Delvare 5908d5d45fbSJean Delvare /* We can fill in the remaining client fields */ 5918d5d45fbSJean Delvare strlcpy(new_client->name, "lm87", I2C_NAME_SIZE); 5928d5d45fbSJean Delvare data->valid = 0; 5938d5d45fbSJean Delvare init_MUTEX(&data->update_lock); 5948d5d45fbSJean Delvare 5958d5d45fbSJean Delvare /* Tell the I2C layer a new client has arrived */ 5968d5d45fbSJean Delvare if ((err = i2c_attach_client(new_client))) 5978d5d45fbSJean Delvare goto exit_free; 5988d5d45fbSJean Delvare 5998d5d45fbSJean Delvare /* Initialize the LM87 chip */ 6008d5d45fbSJean Delvare lm87_init_client(new_client); 6018d5d45fbSJean Delvare 6028d5d45fbSJean Delvare data->in_scale[0] = 2500; 6038d5d45fbSJean Delvare data->in_scale[1] = 2700; 6048d5d45fbSJean Delvare data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; 6058d5d45fbSJean Delvare data->in_scale[3] = 5000; 6068d5d45fbSJean Delvare data->in_scale[4] = 12000; 6078d5d45fbSJean Delvare data->in_scale[5] = 2700; 6088d5d45fbSJean Delvare data->in_scale[6] = 1875; 6098d5d45fbSJean Delvare data->in_scale[7] = 1875; 6108d5d45fbSJean Delvare 6118d5d45fbSJean Delvare /* Register sysfs hooks */ 612943b0830SMark M. Hoffman data->class_dev = hwmon_device_register(&new_client->dev); 613943b0830SMark M. Hoffman if (IS_ERR(data->class_dev)) { 614943b0830SMark M. Hoffman err = PTR_ERR(data->class_dev); 615943b0830SMark M. Hoffman goto exit_detach; 616943b0830SMark M. Hoffman } 617943b0830SMark M. Hoffman 6188d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in1_input); 6198d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in1_min); 6208d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in1_max); 6218d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in2_input); 6228d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in2_min); 6238d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in2_max); 6248d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in3_input); 6258d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in3_min); 6268d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in3_max); 6278d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in4_input); 6288d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in4_min); 6298d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in4_max); 6308d5d45fbSJean Delvare 6318d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(0)) { 6328d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in6_input); 6338d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in6_min); 6348d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in6_max); 6358d5d45fbSJean Delvare } else { 6368d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_fan1_input); 6378d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_fan1_min); 6388d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_fan1_div); 6398d5d45fbSJean Delvare } 6408d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(1)) { 6418d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in7_input); 6428d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in7_min); 6438d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in7_max); 6448d5d45fbSJean Delvare } else { 6458d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_fan2_input); 6468d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_fan2_min); 6478d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_fan2_div); 6488d5d45fbSJean Delvare } 6498d5d45fbSJean Delvare 6508d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp1_input); 6518d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp1_max); 6528d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp1_min); 6538d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp1_crit); 6548d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp2_input); 6558d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp2_max); 6568d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp2_min); 6578d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp2_crit); 6588d5d45fbSJean Delvare 6598d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 6608d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp3_input); 6618d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp3_max); 6628d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp3_min); 6638d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_temp3_crit); 6648d5d45fbSJean Delvare } else { 6658d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in0_input); 6668d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in0_min); 6678d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in0_max); 6688d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in5_input); 6698d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in5_min); 6708d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_in5_max); 6718d5d45fbSJean Delvare } 6728d5d45fbSJean Delvare 6738d5d45fbSJean Delvare if (!(data->channel & CHAN_NO_VID)) { 6748d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_cpu0_vid); 6758d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_vrm); 6768d5d45fbSJean Delvare } 6778d5d45fbSJean Delvare 6788d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_alarms); 6798d5d45fbSJean Delvare device_create_file(&new_client->dev, &dev_attr_aout_output); 6808d5d45fbSJean Delvare 6818d5d45fbSJean Delvare return 0; 6828d5d45fbSJean Delvare 683943b0830SMark M. Hoffman exit_detach: 684943b0830SMark M. Hoffman i2c_detach_client(new_client); 6858d5d45fbSJean Delvare exit_free: 6868d5d45fbSJean Delvare kfree(data); 6878d5d45fbSJean Delvare exit: 6888d5d45fbSJean Delvare return err; 6898d5d45fbSJean Delvare } 6908d5d45fbSJean Delvare 6918d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client) 6928d5d45fbSJean Delvare { 6938d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 6948d5d45fbSJean Delvare u8 config; 6958d5d45fbSJean Delvare 6968d5d45fbSJean Delvare data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); 697303760b4SJean Delvare data->vrm = vid_which_vrm(); 6988d5d45fbSJean Delvare 6998d5d45fbSJean Delvare config = lm87_read_value(client, LM87_REG_CONFIG); 7008d5d45fbSJean Delvare if (!(config & 0x01)) { 7018d5d45fbSJean Delvare int i; 7028d5d45fbSJean Delvare 7038d5d45fbSJean Delvare /* Limits are left uninitialized after power-up */ 7048d5d45fbSJean Delvare for (i = 1; i < 6; i++) { 7058d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); 7068d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); 7078d5d45fbSJean Delvare } 7088d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 7098d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); 7108d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); 7118d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); 7128d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); 7138d5d45fbSJean Delvare } 7148d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 7158d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); 7168d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); 7178d5d45fbSJean Delvare } else { 7188d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); 7198d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); 7208d5d45fbSJean Delvare } 7218d5d45fbSJean Delvare } 7228d5d45fbSJean Delvare if ((config & 0x81) != 0x01) { 7238d5d45fbSJean Delvare /* Start monitoring */ 7248d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_CONFIG, 7258d5d45fbSJean Delvare (config & 0xF7) | 0x01); 7268d5d45fbSJean Delvare } 7278d5d45fbSJean Delvare } 7288d5d45fbSJean Delvare 7298d5d45fbSJean Delvare static int lm87_detach_client(struct i2c_client *client) 7308d5d45fbSJean Delvare { 731943b0830SMark M. Hoffman struct lm87_data *data = i2c_get_clientdata(client); 7328d5d45fbSJean Delvare int err; 7338d5d45fbSJean Delvare 734943b0830SMark M. Hoffman hwmon_device_unregister(data->class_dev); 735943b0830SMark M. Hoffman 7367bef5594SJean Delvare if ((err = i2c_detach_client(client))) 7378d5d45fbSJean Delvare return err; 7388d5d45fbSJean Delvare 739943b0830SMark M. Hoffman kfree(data); 7408d5d45fbSJean Delvare return 0; 7418d5d45fbSJean Delvare } 7428d5d45fbSJean Delvare 7438d5d45fbSJean Delvare static struct lm87_data *lm87_update_device(struct device *dev) 7448d5d45fbSJean Delvare { 7458d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 7468d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 7478d5d45fbSJean Delvare 7488d5d45fbSJean Delvare down(&data->update_lock); 7498d5d45fbSJean Delvare 7508d5d45fbSJean Delvare if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 7518d5d45fbSJean Delvare int i, j; 7528d5d45fbSJean Delvare 7538d5d45fbSJean Delvare dev_dbg(&client->dev, "Updating data.\n"); 7548d5d45fbSJean Delvare 7558d5d45fbSJean Delvare i = (data->channel & CHAN_TEMP3) ? 1 : 0; 7568d5d45fbSJean Delvare j = (data->channel & CHAN_TEMP3) ? 5 : 6; 7578d5d45fbSJean Delvare for (; i < j; i++) { 7588d5d45fbSJean Delvare data->in[i] = lm87_read_value(client, 7598d5d45fbSJean Delvare LM87_REG_IN(i)); 7608d5d45fbSJean Delvare data->in_min[i] = lm87_read_value(client, 7618d5d45fbSJean Delvare LM87_REG_IN_MIN(i)); 7628d5d45fbSJean Delvare data->in_max[i] = lm87_read_value(client, 7638d5d45fbSJean Delvare LM87_REG_IN_MAX(i)); 7648d5d45fbSJean Delvare } 7658d5d45fbSJean Delvare 7668d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 7678d5d45fbSJean Delvare if (data->channel & CHAN_NO_FAN(i)) { 7688d5d45fbSJean Delvare data->in[6+i] = lm87_read_value(client, 7698d5d45fbSJean Delvare LM87_REG_AIN(i)); 7708d5d45fbSJean Delvare data->in_max[6+i] = lm87_read_value(client, 7718d5d45fbSJean Delvare LM87_REG_AIN_MAX(i)); 7728d5d45fbSJean Delvare data->in_min[6+i] = lm87_read_value(client, 7738d5d45fbSJean Delvare LM87_REG_AIN_MIN(i)); 7748d5d45fbSJean Delvare 7758d5d45fbSJean Delvare } else { 7768d5d45fbSJean Delvare data->fan[i] = lm87_read_value(client, 7778d5d45fbSJean Delvare LM87_REG_FAN(i)); 7788d5d45fbSJean Delvare data->fan_min[i] = lm87_read_value(client, 7798d5d45fbSJean Delvare LM87_REG_FAN_MIN(i)); 7808d5d45fbSJean Delvare } 7818d5d45fbSJean Delvare } 7828d5d45fbSJean Delvare 7838d5d45fbSJean Delvare j = (data->channel & CHAN_TEMP3) ? 3 : 2; 7848d5d45fbSJean Delvare for (i = 0 ; i < j; i++) { 7858d5d45fbSJean Delvare data->temp[i] = lm87_read_value(client, 7868d5d45fbSJean Delvare LM87_REG_TEMP[i]); 7878d5d45fbSJean Delvare data->temp_high[i] = lm87_read_value(client, 7888d5d45fbSJean Delvare LM87_REG_TEMP_HIGH[i]); 7898d5d45fbSJean Delvare data->temp_low[i] = lm87_read_value(client, 7908d5d45fbSJean Delvare LM87_REG_TEMP_LOW[i]); 7918d5d45fbSJean Delvare } 7928d5d45fbSJean Delvare 7938d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); 7948d5d45fbSJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); 7958d5d45fbSJean Delvare data->temp_crit_int = min(i, j); 7968d5d45fbSJean Delvare 7978d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); 7988d5d45fbSJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); 7998d5d45fbSJean Delvare data->temp_crit_ext = min(i, j); 8008d5d45fbSJean Delvare 8018d5d45fbSJean Delvare i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 8028d5d45fbSJean Delvare data->fan_div[0] = (i >> 4) & 0x03; 8038d5d45fbSJean Delvare data->fan_div[1] = (i >> 6) & 0x03; 8048d5d45fbSJean Delvare data->vid = (i & 0x0F) 8058d5d45fbSJean Delvare | (lm87_read_value(client, LM87_REG_VID4) & 0x01) 8068d5d45fbSJean Delvare << 4; 8078d5d45fbSJean Delvare 8088d5d45fbSJean Delvare data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) 8098d5d45fbSJean Delvare | (lm87_read_value(client, LM87_REG_ALARMS2) 8108d5d45fbSJean Delvare << 8); 8118d5d45fbSJean Delvare data->aout = lm87_read_value(client, LM87_REG_AOUT); 8128d5d45fbSJean Delvare 8138d5d45fbSJean Delvare data->last_updated = jiffies; 8148d5d45fbSJean Delvare data->valid = 1; 8158d5d45fbSJean Delvare } 8168d5d45fbSJean Delvare 8178d5d45fbSJean Delvare up(&data->update_lock); 8188d5d45fbSJean Delvare 8198d5d45fbSJean Delvare return data; 8208d5d45fbSJean Delvare } 8218d5d45fbSJean Delvare 8228d5d45fbSJean Delvare static int __init sensors_lm87_init(void) 8238d5d45fbSJean Delvare { 8248d5d45fbSJean Delvare return i2c_add_driver(&lm87_driver); 8258d5d45fbSJean Delvare } 8268d5d45fbSJean Delvare 8278d5d45fbSJean Delvare static void __exit sensors_lm87_exit(void) 8288d5d45fbSJean Delvare { 8298d5d45fbSJean Delvare i2c_del_driver(&lm87_driver); 8308d5d45fbSJean Delvare } 8318d5d45fbSJean Delvare 8328d5d45fbSJean Delvare MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others"); 8338d5d45fbSJean Delvare MODULE_DESCRIPTION("LM87 driver"); 8348d5d45fbSJean Delvare MODULE_LICENSE("GPL"); 8358d5d45fbSJean Delvare 8368d5d45fbSJean Delvare module_init(sensors_lm87_init); 8378d5d45fbSJean Delvare module_exit(sensors_lm87_exit); 838