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> 87c81c60fSJean Delvare * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de> 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 2447064d64SBen Hutchings * time. Which are depends on the hardware setup. This driver normally 2547064d64SBen Hutchings * assumes that firmware configured the chip correctly. Where this is not 2647064d64SBen Hutchings * the case, platform code must set the I2C client's platform_data to point 2747064d64SBen Hutchings * to a u8 value to be written to the channel register. 288d5d45fbSJean Delvare * For reference, here is the list of exclusive functions: 298d5d45fbSJean Delvare * - in0+in5 (default) or temp3 308d5d45fbSJean Delvare * - fan1 (default) or in6 318d5d45fbSJean Delvare * - fan2 (default) or in7 328d5d45fbSJean Delvare * - VID lines (default) or IRQ lines (not handled by this driver) 338d5d45fbSJean Delvare * 348d5d45fbSJean Delvare * The LM87 additionally features an analog output, supposedly usable to 358d5d45fbSJean Delvare * control the speed of a fan. All new chips use pulse width modulation 368d5d45fbSJean Delvare * instead. The LM87 is the only hardware monitoring chipset I know of 378d5d45fbSJean Delvare * which uses amplitude modulation. Be careful when using this feature. 388d5d45fbSJean Delvare * 39c7fa3737SJean Delvare * This driver also supports the ADM1024, a sensor chip made by Analog 40c7fa3737SJean Delvare * Devices. That chip is fully compatible with the LM87. Complete 41c7fa3737SJean Delvare * datasheet can be obtained from Analog's website at: 42c7fa3737SJean Delvare * http://www.analog.com/en/prod/0,2877,ADM1024,00.html 43c7fa3737SJean Delvare * 448d5d45fbSJean Delvare * This program is free software; you can redistribute it and/or modify 458d5d45fbSJean Delvare * it under the terms of the GNU General Public License as published by 468d5d45fbSJean Delvare * the Free Software Foundation; either version 2 of the License, or 478d5d45fbSJean Delvare * (at your option) any later version. 488d5d45fbSJean Delvare * 498d5d45fbSJean Delvare * This program is distributed in the hope that it will be useful, 508d5d45fbSJean Delvare * but WITHOUT ANY WARRANTY; without even the implied warranty of 518d5d45fbSJean Delvare * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 528d5d45fbSJean Delvare * GNU General Public License for more details. 538d5d45fbSJean Delvare * 548d5d45fbSJean Delvare * You should have received a copy of the GNU General Public License 558d5d45fbSJean Delvare * along with this program; if not, write to the Free Software 568d5d45fbSJean Delvare * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 578d5d45fbSJean Delvare */ 588d5d45fbSJean Delvare 598d5d45fbSJean Delvare #include <linux/module.h> 608d5d45fbSJean Delvare #include <linux/init.h> 618d5d45fbSJean Delvare #include <linux/slab.h> 628d5d45fbSJean Delvare #include <linux/jiffies.h> 638d5d45fbSJean Delvare #include <linux/i2c.h> 64943b0830SMark M. Hoffman #include <linux/hwmon.h> 65c2803b98SJean Delvare #include <linux/hwmon-sysfs.h> 66303760b4SJean Delvare #include <linux/hwmon-vid.h> 67943b0830SMark M. Hoffman #include <linux/err.h> 689a61bf63SIngo Molnar #include <linux/mutex.h> 698d5d45fbSJean Delvare 708d5d45fbSJean Delvare /* 718d5d45fbSJean Delvare * Addresses to scan 728d5d45fbSJean Delvare * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. 738d5d45fbSJean Delvare */ 748d5d45fbSJean Delvare 7525e9c86dSMark M. Hoffman static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 768d5d45fbSJean Delvare 77e5e9f44cSJean Delvare enum chips { lm87, adm1024 }; 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 : \ 130c6370dbeSGuenter Roeck (((val) < 0 ? (val) - 500 : \ 131c6370dbeSGuenter Roeck (val) + 500) / 1000)) 1328d5d45fbSJean Delvare 1338d5d45fbSJean Delvare #define FAN_FROM_REG(reg, div) ((reg) == 255 || (reg) == 0 ? 0 : \ 134b965d4b7SJean Delvare (1350000 + (reg)*(div) / 2) / ((reg) * (div))) 1358d5d45fbSJean Delvare #define FAN_TO_REG(val, div) ((val) * (div) * 255 <= 1350000 ? 255 : \ 1368d5d45fbSJean Delvare (1350000 + (val)*(div) / 2) / ((val) * (div))) 1378d5d45fbSJean Delvare 1388d5d45fbSJean Delvare #define FAN_DIV_FROM_REG(reg) (1 << (reg)) 1398d5d45fbSJean Delvare 1408d5d45fbSJean Delvare /* analog out is 9.80mV/LSB */ 1418d5d45fbSJean Delvare #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) 1428d5d45fbSJean Delvare #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ 1438d5d45fbSJean Delvare (val) >= 2500 ? 255 : \ 1448d5d45fbSJean Delvare ((val) * 10 + 49) / 98) 1458d5d45fbSJean Delvare 1468d5d45fbSJean Delvare /* nr in 0..1 */ 1478d5d45fbSJean Delvare #define CHAN_NO_FAN(nr) (1 << (nr)) 1488d5d45fbSJean Delvare #define CHAN_TEMP3 (1 << 2) 1498d5d45fbSJean Delvare #define CHAN_VCC_5V (1 << 3) 150889af3d5SJean Delvare #define CHAN_NO_VID (1 << 7) 1518d5d45fbSJean Delvare 1528d5d45fbSJean Delvare /* 1538d5d45fbSJean Delvare * Client data (each client gets its own) 1548d5d45fbSJean Delvare */ 1558d5d45fbSJean Delvare 1568d5d45fbSJean Delvare struct lm87_data { 1571beeffe4STony Jones struct device *hwmon_dev; 1589a61bf63SIngo Molnar struct mutex update_lock; 1598d5d45fbSJean Delvare char valid; /* zero until following fields are valid */ 1608d5d45fbSJean Delvare unsigned long last_updated; /* In jiffies */ 1618d5d45fbSJean Delvare 1628d5d45fbSJean Delvare u8 channel; /* register value */ 163d2cac802SBen Hutchings u8 config; /* original register value */ 1648d5d45fbSJean Delvare 1658d5d45fbSJean Delvare u8 in[8]; /* register value */ 1668d5d45fbSJean Delvare u8 in_max[8]; /* register value */ 1678d5d45fbSJean Delvare u8 in_min[8]; /* register value */ 1688d5d45fbSJean Delvare u16 in_scale[8]; 1698d5d45fbSJean Delvare 1708d5d45fbSJean Delvare s8 temp[3]; /* register value */ 1718d5d45fbSJean Delvare s8 temp_high[3]; /* register value */ 1728d5d45fbSJean Delvare s8 temp_low[3]; /* register value */ 1738d5d45fbSJean Delvare s8 temp_crit_int; /* min of two register values */ 1748d5d45fbSJean Delvare s8 temp_crit_ext; /* min of two register values */ 1758d5d45fbSJean Delvare 1768d5d45fbSJean Delvare u8 fan[2]; /* register value */ 1778d5d45fbSJean Delvare u8 fan_min[2]; /* register value */ 1788d5d45fbSJean Delvare u8 fan_div[2]; /* register value, shifted right */ 1798d5d45fbSJean Delvare u8 aout; /* register value */ 1808d5d45fbSJean Delvare 1818d5d45fbSJean Delvare u16 alarms; /* register values, combined */ 1828d5d45fbSJean Delvare u8 vid; /* register values, combined */ 1838d5d45fbSJean Delvare u8 vrm; 1848d5d45fbSJean Delvare }; 1858d5d45fbSJean Delvare 1868d5d45fbSJean Delvare static inline int lm87_read_value(struct i2c_client *client, u8 reg) 1878d5d45fbSJean Delvare { 1888d5d45fbSJean Delvare return i2c_smbus_read_byte_data(client, reg); 1898d5d45fbSJean Delvare } 1908d5d45fbSJean Delvare 1918d5d45fbSJean Delvare static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) 1928d5d45fbSJean Delvare { 1938d5d45fbSJean Delvare return i2c_smbus_write_byte_data(client, reg, value); 1948d5d45fbSJean Delvare } 1958d5d45fbSJean Delvare 1968652a264SJean Delvare static struct lm87_data *lm87_update_device(struct device *dev) 1978652a264SJean Delvare { 1988652a264SJean Delvare struct i2c_client *client = to_i2c_client(dev); 1998652a264SJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2008652a264SJean Delvare 2018652a264SJean Delvare mutex_lock(&data->update_lock); 2028652a264SJean Delvare 2038652a264SJean Delvare if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 2048652a264SJean Delvare int i, j; 2058652a264SJean Delvare 2068652a264SJean Delvare dev_dbg(&client->dev, "Updating data.\n"); 2078652a264SJean Delvare 2088652a264SJean Delvare i = (data->channel & CHAN_TEMP3) ? 1 : 0; 2098652a264SJean Delvare j = (data->channel & CHAN_TEMP3) ? 5 : 6; 2108652a264SJean Delvare for (; i < j; i++) { 2118652a264SJean Delvare data->in[i] = lm87_read_value(client, 2128652a264SJean Delvare LM87_REG_IN(i)); 2138652a264SJean Delvare data->in_min[i] = lm87_read_value(client, 2148652a264SJean Delvare LM87_REG_IN_MIN(i)); 2158652a264SJean Delvare data->in_max[i] = lm87_read_value(client, 2168652a264SJean Delvare LM87_REG_IN_MAX(i)); 2178652a264SJean Delvare } 2188652a264SJean Delvare 2198652a264SJean Delvare for (i = 0; i < 2; i++) { 2208652a264SJean Delvare if (data->channel & CHAN_NO_FAN(i)) { 2218652a264SJean Delvare data->in[6+i] = lm87_read_value(client, 2228652a264SJean Delvare LM87_REG_AIN(i)); 2238652a264SJean Delvare data->in_max[6+i] = lm87_read_value(client, 2248652a264SJean Delvare LM87_REG_AIN_MAX(i)); 2258652a264SJean Delvare data->in_min[6+i] = lm87_read_value(client, 2268652a264SJean Delvare LM87_REG_AIN_MIN(i)); 2278652a264SJean Delvare 2288652a264SJean Delvare } else { 2298652a264SJean Delvare data->fan[i] = lm87_read_value(client, 2308652a264SJean Delvare LM87_REG_FAN(i)); 2318652a264SJean Delvare data->fan_min[i] = lm87_read_value(client, 2328652a264SJean Delvare LM87_REG_FAN_MIN(i)); 2338652a264SJean Delvare } 2348652a264SJean Delvare } 2358652a264SJean Delvare 2368652a264SJean Delvare j = (data->channel & CHAN_TEMP3) ? 3 : 2; 2378652a264SJean Delvare for (i = 0 ; i < j; i++) { 2388652a264SJean Delvare data->temp[i] = lm87_read_value(client, 2398652a264SJean Delvare LM87_REG_TEMP[i]); 2408652a264SJean Delvare data->temp_high[i] = lm87_read_value(client, 2418652a264SJean Delvare LM87_REG_TEMP_HIGH[i]); 2428652a264SJean Delvare data->temp_low[i] = lm87_read_value(client, 2438652a264SJean Delvare LM87_REG_TEMP_LOW[i]); 2448652a264SJean Delvare } 2458652a264SJean Delvare 2468652a264SJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); 2478652a264SJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); 2488652a264SJean Delvare data->temp_crit_int = min(i, j); 2498652a264SJean Delvare 2508652a264SJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); 2518652a264SJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); 2528652a264SJean Delvare data->temp_crit_ext = min(i, j); 2538652a264SJean Delvare 2548652a264SJean Delvare i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 2558652a264SJean Delvare data->fan_div[0] = (i >> 4) & 0x03; 2568652a264SJean Delvare data->fan_div[1] = (i >> 6) & 0x03; 2578652a264SJean Delvare data->vid = (i & 0x0F) 2588652a264SJean Delvare | (lm87_read_value(client, LM87_REG_VID4) & 0x01) 2598652a264SJean Delvare << 4; 2608652a264SJean Delvare 2618652a264SJean Delvare data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) 2628652a264SJean Delvare | (lm87_read_value(client, LM87_REG_ALARMS2) 2638652a264SJean Delvare << 8); 2648652a264SJean Delvare data->aout = lm87_read_value(client, LM87_REG_AOUT); 2658652a264SJean Delvare 2668652a264SJean Delvare data->last_updated = jiffies; 2678652a264SJean Delvare data->valid = 1; 2688652a264SJean Delvare } 2698652a264SJean Delvare 2708652a264SJean Delvare mutex_unlock(&data->update_lock); 2718652a264SJean Delvare 2728652a264SJean Delvare return data; 2738652a264SJean Delvare } 2748652a264SJean Delvare 2758652a264SJean Delvare /* 2768652a264SJean Delvare * Sysfs stuff 2778652a264SJean Delvare */ 2788652a264SJean Delvare 2790e190b7fSJean Delvare static ssize_t show_in_input(struct device *dev, struct device_attribute *attr, 2800e190b7fSJean Delvare char *buf) 2810e190b7fSJean Delvare { 2820e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2830e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2848d5d45fbSJean Delvare 2850e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in[nr], 2860e190b7fSJean Delvare data->in_scale[nr])); 2870e190b7fSJean Delvare } 2880e190b7fSJean Delvare 2890e190b7fSJean Delvare static ssize_t show_in_min(struct device *dev, 2900e190b7fSJean Delvare struct device_attribute *attr, char *buf) 2910e190b7fSJean Delvare { 2920e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2930e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2940e190b7fSJean Delvare 2950e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[nr], 2960e190b7fSJean Delvare data->in_scale[nr])); 2970e190b7fSJean Delvare } 2980e190b7fSJean Delvare 2990e190b7fSJean Delvare static ssize_t show_in_max(struct device *dev, 3000e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3010e190b7fSJean Delvare { 3020e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3030e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3040e190b7fSJean Delvare 3050e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[nr], 3060e190b7fSJean Delvare data->in_scale[nr])); 3070e190b7fSJean Delvare } 3080e190b7fSJean Delvare 3090e190b7fSJean Delvare static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 3100e190b7fSJean Delvare const char *buf, size_t count) 3118d5d45fbSJean Delvare { 3128d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3138d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3140e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 315c6370dbeSGuenter Roeck long val; 316c6370dbeSGuenter Roeck int err; 317c6370dbeSGuenter Roeck 318c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 319c6370dbeSGuenter Roeck if (err) 320c6370dbeSGuenter Roeck return err; 3218d5d45fbSJean Delvare 3229a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3238d5d45fbSJean Delvare data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); 3248d5d45fbSJean Delvare lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : 3258d5d45fbSJean Delvare LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); 3269a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 327c6370dbeSGuenter Roeck return count; 3288d5d45fbSJean Delvare } 3298d5d45fbSJean Delvare 3300e190b7fSJean Delvare static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 3310e190b7fSJean Delvare const char *buf, size_t count) 3328d5d45fbSJean Delvare { 3338d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 3348d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3350e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 336c6370dbeSGuenter Roeck long val; 337c6370dbeSGuenter Roeck int err; 338c6370dbeSGuenter Roeck 339c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 340c6370dbeSGuenter Roeck if (err) 341c6370dbeSGuenter Roeck return err; 3428d5d45fbSJean Delvare 3439a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3448d5d45fbSJean Delvare data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); 3458d5d45fbSJean Delvare lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : 3468d5d45fbSJean Delvare LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); 3479a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 348c6370dbeSGuenter Roeck return count; 3498d5d45fbSJean Delvare } 3508d5d45fbSJean Delvare 3518d5d45fbSJean Delvare #define set_in(offset) \ 3520e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 3530e190b7fSJean Delvare show_in_input, NULL, offset); \ 3540e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 3550e190b7fSJean Delvare show_in_min, set_in_min, offset); \ 3560e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 3570e190b7fSJean Delvare show_in_max, set_in_max, offset) 3588d5d45fbSJean Delvare set_in(0); 3598d5d45fbSJean Delvare set_in(1); 3608d5d45fbSJean Delvare set_in(2); 3618d5d45fbSJean Delvare set_in(3); 3628d5d45fbSJean Delvare set_in(4); 3638d5d45fbSJean Delvare set_in(5); 3648d5d45fbSJean Delvare set_in(6); 3658d5d45fbSJean Delvare set_in(7); 3668d5d45fbSJean Delvare 3670e190b7fSJean Delvare static ssize_t show_temp_input(struct device *dev, 3680e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3690e190b7fSJean Delvare { 3700e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3710e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3728d5d45fbSJean Delvare 3730e190b7fSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); 3740e190b7fSJean Delvare } 3750e190b7fSJean Delvare 3760e190b7fSJean Delvare static ssize_t show_temp_low(struct device *dev, 3770e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3780e190b7fSJean Delvare { 3790e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3800e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3810e190b7fSJean Delvare 3820e190b7fSJean Delvare return sprintf(buf, "%d\n", 3830e190b7fSJean Delvare TEMP_FROM_REG(data->temp_low[nr])); 3840e190b7fSJean Delvare } 3850e190b7fSJean Delvare 3860e190b7fSJean Delvare static ssize_t show_temp_high(struct device *dev, 3870e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3880e190b7fSJean Delvare { 3890e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3900e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3910e190b7fSJean Delvare 3920e190b7fSJean Delvare return sprintf(buf, "%d\n", 3930e190b7fSJean Delvare TEMP_FROM_REG(data->temp_high[nr])); 3940e190b7fSJean Delvare } 3950e190b7fSJean Delvare 3960e190b7fSJean Delvare static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr, 3970e190b7fSJean Delvare const char *buf, size_t count) 3988d5d45fbSJean Delvare { 3998d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4008d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4010e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 402c6370dbeSGuenter Roeck long val; 403c6370dbeSGuenter Roeck int err; 404c6370dbeSGuenter Roeck 405c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 406c6370dbeSGuenter Roeck if (err) 407c6370dbeSGuenter Roeck return err; 4088d5d45fbSJean Delvare 4099a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4108d5d45fbSJean Delvare data->temp_low[nr] = TEMP_TO_REG(val); 4118d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); 4129a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 413c6370dbeSGuenter Roeck return count; 4148d5d45fbSJean Delvare } 4158d5d45fbSJean Delvare 4160e190b7fSJean Delvare static ssize_t set_temp_high(struct device *dev, struct device_attribute *attr, 4170e190b7fSJean Delvare const char *buf, size_t count) 4188d5d45fbSJean Delvare { 4198d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4208d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4210e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 422c6370dbeSGuenter Roeck long val; 423c6370dbeSGuenter Roeck int err; 424c6370dbeSGuenter Roeck 425c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 426c6370dbeSGuenter Roeck if (err) 427c6370dbeSGuenter Roeck return err; 4288d5d45fbSJean Delvare 4299a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4308d5d45fbSJean Delvare data->temp_high[nr] = TEMP_TO_REG(val); 4318d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); 4329a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 433c6370dbeSGuenter Roeck return count; 4348d5d45fbSJean Delvare } 4358d5d45fbSJean Delvare 4368d5d45fbSJean Delvare #define set_temp(offset) \ 4370e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 4380e190b7fSJean Delvare show_temp_input, NULL, offset - 1); \ 4390e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 4400e190b7fSJean Delvare show_temp_high, set_temp_high, offset - 1); \ 4410e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 4420e190b7fSJean Delvare show_temp_low, set_temp_low, offset - 1) 4438d5d45fbSJean Delvare set_temp(1); 4448d5d45fbSJean Delvare set_temp(2); 4458d5d45fbSJean Delvare set_temp(3); 4468d5d45fbSJean Delvare 447c6370dbeSGuenter Roeck static ssize_t show_temp_crit_int(struct device *dev, 448c6370dbeSGuenter Roeck struct device_attribute *attr, char *buf) 4498d5d45fbSJean Delvare { 4508d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4518d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); 4528d5d45fbSJean Delvare } 4538d5d45fbSJean Delvare 454c6370dbeSGuenter Roeck static ssize_t show_temp_crit_ext(struct device *dev, 455c6370dbeSGuenter Roeck struct device_attribute *attr, char *buf) 4568d5d45fbSJean Delvare { 4578d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4588d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); 4598d5d45fbSJean Delvare } 4608d5d45fbSJean Delvare 4618d5d45fbSJean Delvare static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); 4628d5d45fbSJean Delvare static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); 4638d5d45fbSJean Delvare static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); 4648d5d45fbSJean Delvare 4650e190b7fSJean Delvare static ssize_t show_fan_input(struct device *dev, 4660e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4670e190b7fSJean Delvare { 4680e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4690e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4708d5d45fbSJean Delvare 4710e190b7fSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 4720e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr]))); 4730e190b7fSJean Delvare } 4740e190b7fSJean Delvare 4750e190b7fSJean Delvare static ssize_t show_fan_min(struct device *dev, 4760e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4770e190b7fSJean Delvare { 4780e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4790e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4800e190b7fSJean Delvare 4810e190b7fSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], 4820e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr]))); 4830e190b7fSJean Delvare } 4840e190b7fSJean Delvare 4850e190b7fSJean Delvare static ssize_t show_fan_div(struct device *dev, 4860e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4870e190b7fSJean Delvare { 4880e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4890e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4900e190b7fSJean Delvare 4910e190b7fSJean Delvare return sprintf(buf, "%d\n", 4920e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4930e190b7fSJean Delvare } 4940e190b7fSJean Delvare 4950e190b7fSJean Delvare static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 4960e190b7fSJean Delvare const char *buf, size_t count) 4978d5d45fbSJean Delvare { 4988d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 4998d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5000e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 501c6370dbeSGuenter Roeck long val; 502c6370dbeSGuenter Roeck int err; 503c6370dbeSGuenter Roeck 504c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 505c6370dbeSGuenter Roeck if (err) 506c6370dbeSGuenter Roeck return err; 5078d5d45fbSJean Delvare 5089a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5098d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(val, 5108d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 5118d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); 5129a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 513c6370dbeSGuenter Roeck return count; 5148d5d45fbSJean Delvare } 5158d5d45fbSJean Delvare 516c6370dbeSGuenter Roeck /* 517c6370dbeSGuenter Roeck * Note: we save and restore the fan minimum here, because its value is 518c6370dbeSGuenter Roeck * determined in part by the fan clock divider. This follows the principle 519c6370dbeSGuenter Roeck * of least surprise; the user doesn't expect the fan minimum to change just 520c6370dbeSGuenter Roeck * because the divider changed. 521c6370dbeSGuenter Roeck */ 5220e190b7fSJean Delvare static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 5230e190b7fSJean Delvare const char *buf, size_t count) 5248d5d45fbSJean Delvare { 5258d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 5268d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5270e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 528c6370dbeSGuenter Roeck long val; 529c6370dbeSGuenter Roeck int err; 5308d5d45fbSJean Delvare unsigned long min; 5318d5d45fbSJean Delvare u8 reg; 5328d5d45fbSJean Delvare 533c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 534c6370dbeSGuenter Roeck if (err) 535c6370dbeSGuenter Roeck return err; 536c6370dbeSGuenter Roeck 5379a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5388d5d45fbSJean Delvare min = FAN_FROM_REG(data->fan_min[nr], 5398d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 5408d5d45fbSJean Delvare 5418d5d45fbSJean Delvare switch (val) { 542c6370dbeSGuenter Roeck case 1: 543c6370dbeSGuenter Roeck data->fan_div[nr] = 0; 544c6370dbeSGuenter Roeck break; 545c6370dbeSGuenter Roeck case 2: 546c6370dbeSGuenter Roeck data->fan_div[nr] = 1; 547c6370dbeSGuenter Roeck break; 548c6370dbeSGuenter Roeck case 4: 549c6370dbeSGuenter Roeck data->fan_div[nr] = 2; 550c6370dbeSGuenter Roeck break; 551c6370dbeSGuenter Roeck case 8: 552c6370dbeSGuenter Roeck data->fan_div[nr] = 3; 553c6370dbeSGuenter Roeck break; 5548d5d45fbSJean Delvare default: 5559a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5568d5d45fbSJean Delvare return -EINVAL; 5578d5d45fbSJean Delvare } 5588d5d45fbSJean Delvare 5598d5d45fbSJean Delvare reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 5608d5d45fbSJean Delvare switch (nr) { 5618d5d45fbSJean Delvare case 0: 5628d5d45fbSJean Delvare reg = (reg & 0xCF) | (data->fan_div[0] << 4); 5638d5d45fbSJean Delvare break; 5648d5d45fbSJean Delvare case 1: 5658d5d45fbSJean Delvare reg = (reg & 0x3F) | (data->fan_div[1] << 6); 5668d5d45fbSJean Delvare break; 5678d5d45fbSJean Delvare } 5688d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); 5698d5d45fbSJean Delvare 5708d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(min, val); 5718d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), 5728d5d45fbSJean Delvare data->fan_min[nr]); 5739a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5748d5d45fbSJean Delvare 5758d5d45fbSJean Delvare return count; 5768d5d45fbSJean Delvare } 5778d5d45fbSJean Delvare 5788d5d45fbSJean Delvare #define set_fan(offset) \ 5790e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 5800e190b7fSJean Delvare show_fan_input, NULL, offset - 1); \ 5810e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 5820e190b7fSJean Delvare show_fan_min, set_fan_min, offset - 1); \ 5830e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 5840e190b7fSJean Delvare show_fan_div, set_fan_div, offset - 1) 5858d5d45fbSJean Delvare set_fan(1); 5868d5d45fbSJean Delvare set_fan(2); 5878d5d45fbSJean Delvare 588c6370dbeSGuenter Roeck static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, 589c6370dbeSGuenter Roeck char *buf) 5908d5d45fbSJean Delvare { 5918d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5928d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->alarms); 5938d5d45fbSJean Delvare } 5948d5d45fbSJean Delvare static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); 5958d5d45fbSJean Delvare 596c6370dbeSGuenter Roeck static ssize_t show_vid(struct device *dev, struct device_attribute *attr, 597c6370dbeSGuenter Roeck char *buf) 5988d5d45fbSJean Delvare { 5998d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 6008d5d45fbSJean Delvare return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 6018d5d45fbSJean Delvare } 6028d5d45fbSJean Delvare static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); 6038d5d45fbSJean Delvare 604c6370dbeSGuenter Roeck static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, 605c6370dbeSGuenter Roeck char *buf) 6068d5d45fbSJean Delvare { 60790d6619aSJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 6088d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->vrm); 6098d5d45fbSJean Delvare } 610c6370dbeSGuenter Roeck static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, 611c6370dbeSGuenter Roeck const char *buf, size_t count) 6128d5d45fbSJean Delvare { 6138f74efe8SJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 614c6370dbeSGuenter Roeck unsigned long val; 615c6370dbeSGuenter Roeck int err; 616c6370dbeSGuenter Roeck 617c6370dbeSGuenter Roeck err = kstrtoul(buf, 10, &val); 618c6370dbeSGuenter Roeck if (err) 619c6370dbeSGuenter Roeck return err; 620fa642d9dSAxel Lin 621fa642d9dSAxel Lin if (val > 255) 622fa642d9dSAxel Lin return -EINVAL; 623fa642d9dSAxel Lin 624c6370dbeSGuenter Roeck data->vrm = val; 6258d5d45fbSJean Delvare return count; 6268d5d45fbSJean Delvare } 6278d5d45fbSJean Delvare static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); 6288d5d45fbSJean Delvare 629c6370dbeSGuenter Roeck static ssize_t show_aout(struct device *dev, struct device_attribute *attr, 630c6370dbeSGuenter Roeck char *buf) 6318d5d45fbSJean Delvare { 6328d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 6338d5d45fbSJean Delvare return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); 6348d5d45fbSJean Delvare } 635c6370dbeSGuenter Roeck static ssize_t set_aout(struct device *dev, struct device_attribute *attr, 636c6370dbeSGuenter Roeck const char *buf, size_t count) 6378d5d45fbSJean Delvare { 6388d5d45fbSJean Delvare struct i2c_client *client = to_i2c_client(dev); 6398d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 640c6370dbeSGuenter Roeck long val; 641c6370dbeSGuenter Roeck int err; 642c6370dbeSGuenter Roeck 643c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 644c6370dbeSGuenter Roeck if (err) 645c6370dbeSGuenter Roeck return err; 6468d5d45fbSJean Delvare 6479a61bf63SIngo Molnar mutex_lock(&data->update_lock); 6488d5d45fbSJean Delvare data->aout = AOUT_TO_REG(val); 6498d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AOUT, data->aout); 6509a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 6518d5d45fbSJean Delvare return count; 6528d5d45fbSJean Delvare } 6538d5d45fbSJean Delvare static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); 6548d5d45fbSJean Delvare 655c2803b98SJean Delvare static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 656c2803b98SJean Delvare char *buf) 657c2803b98SJean Delvare { 658c2803b98SJean Delvare struct lm87_data *data = lm87_update_device(dev); 659c2803b98SJean Delvare int bitnr = to_sensor_dev_attr(attr)->index; 660c2803b98SJean Delvare return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 661c2803b98SJean Delvare } 662c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 663c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 664c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 665c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 666c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 667c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); 668c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); 669c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); 670c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 671c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 672c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); 673c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); 674c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); 675c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); 676c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 677c2803b98SJean Delvare 6788d5d45fbSJean Delvare /* 6798d5d45fbSJean Delvare * Real code 6808d5d45fbSJean Delvare */ 6818d5d45fbSJean Delvare 6820501a381SMark M. Hoffman static struct attribute *lm87_attributes[] = { 6830e190b7fSJean Delvare &sensor_dev_attr_in1_input.dev_attr.attr, 6840e190b7fSJean Delvare &sensor_dev_attr_in1_min.dev_attr.attr, 6850e190b7fSJean Delvare &sensor_dev_attr_in1_max.dev_attr.attr, 686c2803b98SJean Delvare &sensor_dev_attr_in1_alarm.dev_attr.attr, 6870e190b7fSJean Delvare &sensor_dev_attr_in2_input.dev_attr.attr, 6880e190b7fSJean Delvare &sensor_dev_attr_in2_min.dev_attr.attr, 6890e190b7fSJean Delvare &sensor_dev_attr_in2_max.dev_attr.attr, 690c2803b98SJean Delvare &sensor_dev_attr_in2_alarm.dev_attr.attr, 6910e190b7fSJean Delvare &sensor_dev_attr_in3_input.dev_attr.attr, 6920e190b7fSJean Delvare &sensor_dev_attr_in3_min.dev_attr.attr, 6930e190b7fSJean Delvare &sensor_dev_attr_in3_max.dev_attr.attr, 694c2803b98SJean Delvare &sensor_dev_attr_in3_alarm.dev_attr.attr, 6950e190b7fSJean Delvare &sensor_dev_attr_in4_input.dev_attr.attr, 6960e190b7fSJean Delvare &sensor_dev_attr_in4_min.dev_attr.attr, 6970e190b7fSJean Delvare &sensor_dev_attr_in4_max.dev_attr.attr, 698c2803b98SJean Delvare &sensor_dev_attr_in4_alarm.dev_attr.attr, 6990501a381SMark M. Hoffman 7000e190b7fSJean Delvare &sensor_dev_attr_temp1_input.dev_attr.attr, 7010e190b7fSJean Delvare &sensor_dev_attr_temp1_max.dev_attr.attr, 7020e190b7fSJean Delvare &sensor_dev_attr_temp1_min.dev_attr.attr, 7030501a381SMark M. Hoffman &dev_attr_temp1_crit.attr, 704c2803b98SJean Delvare &sensor_dev_attr_temp1_alarm.dev_attr.attr, 7050e190b7fSJean Delvare &sensor_dev_attr_temp2_input.dev_attr.attr, 7060e190b7fSJean Delvare &sensor_dev_attr_temp2_max.dev_attr.attr, 7070e190b7fSJean Delvare &sensor_dev_attr_temp2_min.dev_attr.attr, 7080501a381SMark M. Hoffman &dev_attr_temp2_crit.attr, 709c2803b98SJean Delvare &sensor_dev_attr_temp2_alarm.dev_attr.attr, 710c2803b98SJean Delvare &sensor_dev_attr_temp2_fault.dev_attr.attr, 7110501a381SMark M. Hoffman 7120501a381SMark M. Hoffman &dev_attr_alarms.attr, 7130501a381SMark M. Hoffman &dev_attr_aout_output.attr, 7140501a381SMark M. Hoffman 7150501a381SMark M. Hoffman NULL 7160501a381SMark M. Hoffman }; 7170501a381SMark M. Hoffman 7180501a381SMark M. Hoffman static const struct attribute_group lm87_group = { 7190501a381SMark M. Hoffman .attrs = lm87_attributes, 7200501a381SMark M. Hoffman }; 7210501a381SMark M. Hoffman 722073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in6[] = { 7230e190b7fSJean Delvare &sensor_dev_attr_in6_input.dev_attr.attr, 7240e190b7fSJean Delvare &sensor_dev_attr_in6_min.dev_attr.attr, 7250e190b7fSJean Delvare &sensor_dev_attr_in6_max.dev_attr.attr, 726c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr.attr, 727073f1e6cSGuenter Roeck NULL 728073f1e6cSGuenter Roeck }; 7290501a381SMark M. Hoffman 730073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in6 = { 731073f1e6cSGuenter Roeck .attrs = lm87_attributes_in6, 732073f1e6cSGuenter Roeck }; 733073f1e6cSGuenter Roeck 734073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_fan1[] = { 7350e190b7fSJean Delvare &sensor_dev_attr_fan1_input.dev_attr.attr, 7360e190b7fSJean Delvare &sensor_dev_attr_fan1_min.dev_attr.attr, 7370e190b7fSJean Delvare &sensor_dev_attr_fan1_div.dev_attr.attr, 738c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr.attr, 739073f1e6cSGuenter Roeck NULL 740073f1e6cSGuenter Roeck }; 7410501a381SMark M. Hoffman 742073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_fan1 = { 743073f1e6cSGuenter Roeck .attrs = lm87_attributes_fan1, 744073f1e6cSGuenter Roeck }; 745073f1e6cSGuenter Roeck 746073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in7[] = { 7470e190b7fSJean Delvare &sensor_dev_attr_in7_input.dev_attr.attr, 7480e190b7fSJean Delvare &sensor_dev_attr_in7_min.dev_attr.attr, 7490e190b7fSJean Delvare &sensor_dev_attr_in7_max.dev_attr.attr, 750c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr.attr, 751073f1e6cSGuenter Roeck NULL 752073f1e6cSGuenter Roeck }; 7530501a381SMark M. Hoffman 754073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in7 = { 755073f1e6cSGuenter Roeck .attrs = lm87_attributes_in7, 756073f1e6cSGuenter Roeck }; 757073f1e6cSGuenter Roeck 758073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_fan2[] = { 7590e190b7fSJean Delvare &sensor_dev_attr_fan2_input.dev_attr.attr, 7600e190b7fSJean Delvare &sensor_dev_attr_fan2_min.dev_attr.attr, 7610e190b7fSJean Delvare &sensor_dev_attr_fan2_div.dev_attr.attr, 762c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr.attr, 763073f1e6cSGuenter Roeck NULL 764073f1e6cSGuenter Roeck }; 7650501a381SMark M. Hoffman 766073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_fan2 = { 767073f1e6cSGuenter Roeck .attrs = lm87_attributes_fan2, 768073f1e6cSGuenter Roeck }; 769073f1e6cSGuenter Roeck 770073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_temp3[] = { 7710e190b7fSJean Delvare &sensor_dev_attr_temp3_input.dev_attr.attr, 7720e190b7fSJean Delvare &sensor_dev_attr_temp3_max.dev_attr.attr, 7730e190b7fSJean Delvare &sensor_dev_attr_temp3_min.dev_attr.attr, 7740501a381SMark M. Hoffman &dev_attr_temp3_crit.attr, 775c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr.attr, 776c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr.attr, 777073f1e6cSGuenter Roeck NULL 778073f1e6cSGuenter Roeck }; 7790501a381SMark M. Hoffman 780073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_temp3 = { 781073f1e6cSGuenter Roeck .attrs = lm87_attributes_temp3, 782073f1e6cSGuenter Roeck }; 783073f1e6cSGuenter Roeck 784073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in0_5[] = { 7850e190b7fSJean Delvare &sensor_dev_attr_in0_input.dev_attr.attr, 7860e190b7fSJean Delvare &sensor_dev_attr_in0_min.dev_attr.attr, 7870e190b7fSJean Delvare &sensor_dev_attr_in0_max.dev_attr.attr, 788c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr.attr, 7890e190b7fSJean Delvare &sensor_dev_attr_in5_input.dev_attr.attr, 7900e190b7fSJean Delvare &sensor_dev_attr_in5_min.dev_attr.attr, 7910e190b7fSJean Delvare &sensor_dev_attr_in5_max.dev_attr.attr, 792c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr.attr, 7930501a381SMark M. Hoffman NULL 7940501a381SMark M. Hoffman }; 7950501a381SMark M. Hoffman 796073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in0_5 = { 797073f1e6cSGuenter Roeck .attrs = lm87_attributes_in0_5, 798073f1e6cSGuenter Roeck }; 799073f1e6cSGuenter Roeck 800073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_vid[] = { 801073f1e6cSGuenter Roeck &dev_attr_cpu0_vid.attr, 802073f1e6cSGuenter Roeck &dev_attr_vrm.attr, 803073f1e6cSGuenter Roeck NULL 804073f1e6cSGuenter Roeck }; 805073f1e6cSGuenter Roeck 806073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_vid = { 807073f1e6cSGuenter Roeck .attrs = lm87_attributes_vid, 8080501a381SMark M. Hoffman }; 8090501a381SMark M. Hoffman 810a888420aSJean Delvare /* Return 0 if detection is successful, -ENODEV otherwise */ 8118652a264SJean Delvare static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) 8128d5d45fbSJean Delvare { 8138652a264SJean Delvare struct i2c_adapter *adapter = client->adapter; 81452df6440SJean Delvare const char *name; 81552df6440SJean Delvare u8 cid, rev; 8168d5d45fbSJean Delvare 8178d5d45fbSJean Delvare if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 818a888420aSJean Delvare return -ENODEV; 8198d5d45fbSJean Delvare 8208652a264SJean Delvare if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) 82152df6440SJean Delvare return -ENODEV; 8228d5d45fbSJean Delvare 8238d5d45fbSJean Delvare /* Now, we do the remaining detection. */ 8248652a264SJean Delvare cid = lm87_read_value(client, LM87_REG_COMPANY_ID); 8258652a264SJean Delvare rev = lm87_read_value(client, LM87_REG_REVISION); 8268d5d45fbSJean Delvare 827c7fa3737SJean Delvare if (cid == 0x02 /* National Semiconductor */ 828c7fa3737SJean Delvare && (rev >= 0x01 && rev <= 0x08)) 82952df6440SJean Delvare name = "lm87"; 830c7fa3737SJean Delvare else if (cid == 0x41 /* Analog Devices */ 831c7fa3737SJean Delvare && (rev & 0xf0) == 0x10) 83252df6440SJean Delvare name = "adm1024"; 83352df6440SJean Delvare else { 83452df6440SJean Delvare dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", 8358652a264SJean Delvare client->addr); 836a888420aSJean Delvare return -ENODEV; 8378d5d45fbSJean Delvare } 8388d5d45fbSJean Delvare 83952df6440SJean Delvare strlcpy(info->type, name, I2C_NAME_SIZE); 840a888420aSJean Delvare 841a888420aSJean Delvare return 0; 842a888420aSJean Delvare } 843a888420aSJean Delvare 844073f1e6cSGuenter Roeck static void lm87_remove_files(struct i2c_client *client) 845073f1e6cSGuenter Roeck { 846073f1e6cSGuenter Roeck struct device *dev = &client->dev; 847073f1e6cSGuenter Roeck 848073f1e6cSGuenter Roeck sysfs_remove_group(&dev->kobj, &lm87_group); 849073f1e6cSGuenter Roeck sysfs_remove_group(&dev->kobj, &lm87_group_in6); 850073f1e6cSGuenter Roeck sysfs_remove_group(&dev->kobj, &lm87_group_fan1); 851073f1e6cSGuenter Roeck sysfs_remove_group(&dev->kobj, &lm87_group_in7); 852073f1e6cSGuenter Roeck sysfs_remove_group(&dev->kobj, &lm87_group_fan2); 853073f1e6cSGuenter Roeck sysfs_remove_group(&dev->kobj, &lm87_group_temp3); 854073f1e6cSGuenter Roeck sysfs_remove_group(&dev->kobj, &lm87_group_in0_5); 855073f1e6cSGuenter Roeck sysfs_remove_group(&dev->kobj, &lm87_group_vid); 856073f1e6cSGuenter Roeck } 857073f1e6cSGuenter Roeck 8588d5d45fbSJean Delvare static void lm87_init_client(struct i2c_client *client) 8598d5d45fbSJean Delvare { 8608d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 8618d5d45fbSJean Delvare 862a8b3a3a5SJingoo Han if (dev_get_platdata(&client->dev)) { 863a8b3a3a5SJingoo Han data->channel = *(u8 *)dev_get_platdata(&client->dev); 86447064d64SBen Hutchings lm87_write_value(client, 86547064d64SBen Hutchings LM87_REG_CHANNEL_MODE, data->channel); 86647064d64SBen Hutchings } else { 8678d5d45fbSJean Delvare data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); 86847064d64SBen Hutchings } 869d2cac802SBen Hutchings data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; 8708d5d45fbSJean Delvare 871d2cac802SBen Hutchings if (!(data->config & 0x01)) { 8728d5d45fbSJean Delvare int i; 8738d5d45fbSJean Delvare 8748d5d45fbSJean Delvare /* Limits are left uninitialized after power-up */ 8758d5d45fbSJean Delvare for (i = 1; i < 6; i++) { 8768d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); 8778d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); 8788d5d45fbSJean Delvare } 8798d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 8808d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); 8818d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); 8828d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); 8838d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); 8848d5d45fbSJean Delvare } 8858d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 8868d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); 8878d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); 8888d5d45fbSJean Delvare } else { 8898d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); 8908d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); 8918d5d45fbSJean Delvare } 8928d5d45fbSJean Delvare } 89349ae6cc8SBen Hutchings 89449ae6cc8SBen Hutchings /* Make sure Start is set and INT#_Clear is clear */ 895d2cac802SBen Hutchings if ((data->config & 0x09) != 0x01) 8968d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_CONFIG, 897d2cac802SBen Hutchings (data->config & 0x77) | 0x01); 8988d5d45fbSJean Delvare } 8998d5d45fbSJean Delvare 9008652a264SJean Delvare static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) 9018652a264SJean Delvare { 9028652a264SJean Delvare struct lm87_data *data; 9038652a264SJean Delvare int err; 9048652a264SJean Delvare 9055ff512b4SGuenter Roeck data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL); 9065ff512b4SGuenter Roeck if (!data) 9075ff512b4SGuenter Roeck return -ENOMEM; 9088652a264SJean Delvare 9098652a264SJean Delvare i2c_set_clientdata(client, data); 9108652a264SJean Delvare mutex_init(&data->update_lock); 9118652a264SJean Delvare 9128652a264SJean Delvare /* Initialize the LM87 chip */ 9138652a264SJean Delvare lm87_init_client(client); 9148652a264SJean Delvare 9158652a264SJean Delvare data->in_scale[0] = 2500; 9168652a264SJean Delvare data->in_scale[1] = 2700; 9178652a264SJean Delvare data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; 9188652a264SJean Delvare data->in_scale[3] = 5000; 9198652a264SJean Delvare data->in_scale[4] = 12000; 9208652a264SJean Delvare data->in_scale[5] = 2700; 9218652a264SJean Delvare data->in_scale[6] = 1875; 9228652a264SJean Delvare data->in_scale[7] = 1875; 9238652a264SJean Delvare 9248652a264SJean Delvare /* Register sysfs hooks */ 9258652a264SJean Delvare err = sysfs_create_group(&client->dev.kobj, &lm87_group); 9268652a264SJean Delvare if (err) 9275ff512b4SGuenter Roeck goto exit_stop; 9288652a264SJean Delvare 9298652a264SJean Delvare if (data->channel & CHAN_NO_FAN(0)) { 9308652a264SJean Delvare err = sysfs_create_group(&client->dev.kobj, &lm87_group_in6); 9318652a264SJean Delvare if (err) 9328652a264SJean Delvare goto exit_remove; 9338652a264SJean Delvare } else { 9348652a264SJean Delvare err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan1); 9358652a264SJean Delvare if (err) 9368652a264SJean Delvare goto exit_remove; 9378652a264SJean Delvare } 9388652a264SJean Delvare 9398652a264SJean Delvare if (data->channel & CHAN_NO_FAN(1)) { 9408652a264SJean Delvare err = sysfs_create_group(&client->dev.kobj, &lm87_group_in7); 9418652a264SJean Delvare if (err) 9428652a264SJean Delvare goto exit_remove; 9438652a264SJean Delvare } else { 9448652a264SJean Delvare err = sysfs_create_group(&client->dev.kobj, &lm87_group_fan2); 9458652a264SJean Delvare if (err) 9468652a264SJean Delvare goto exit_remove; 9478652a264SJean Delvare } 9488652a264SJean Delvare 9498652a264SJean Delvare if (data->channel & CHAN_TEMP3) { 9508652a264SJean Delvare err = sysfs_create_group(&client->dev.kobj, &lm87_group_temp3); 9518652a264SJean Delvare if (err) 9528652a264SJean Delvare goto exit_remove; 9538652a264SJean Delvare } else { 9548652a264SJean Delvare err = sysfs_create_group(&client->dev.kobj, &lm87_group_in0_5); 9558652a264SJean Delvare if (err) 9568652a264SJean Delvare goto exit_remove; 9578652a264SJean Delvare } 9588652a264SJean Delvare 9598652a264SJean Delvare if (!(data->channel & CHAN_NO_VID)) { 9608652a264SJean Delvare data->vrm = vid_which_vrm(); 9618652a264SJean Delvare err = sysfs_create_group(&client->dev.kobj, &lm87_group_vid); 9628652a264SJean Delvare if (err) 9638652a264SJean Delvare goto exit_remove; 9648652a264SJean Delvare } 9658652a264SJean Delvare 9668652a264SJean Delvare data->hwmon_dev = hwmon_device_register(&client->dev); 9678652a264SJean Delvare if (IS_ERR(data->hwmon_dev)) { 9688652a264SJean Delvare err = PTR_ERR(data->hwmon_dev); 9698652a264SJean Delvare goto exit_remove; 9708652a264SJean Delvare } 9718652a264SJean Delvare 9728652a264SJean Delvare return 0; 9738652a264SJean Delvare 9748652a264SJean Delvare exit_remove: 9758652a264SJean Delvare lm87_remove_files(client); 9765ff512b4SGuenter Roeck exit_stop: 9778652a264SJean Delvare lm87_write_value(client, LM87_REG_CONFIG, data->config); 9788652a264SJean Delvare return err; 9798652a264SJean Delvare } 9808652a264SJean Delvare 981a888420aSJean Delvare static int lm87_remove(struct i2c_client *client) 9828d5d45fbSJean Delvare { 983943b0830SMark M. Hoffman struct lm87_data *data = i2c_get_clientdata(client); 9848d5d45fbSJean Delvare 9851beeffe4STony Jones hwmon_device_unregister(data->hwmon_dev); 986073f1e6cSGuenter Roeck lm87_remove_files(client); 987943b0830SMark M. Hoffman 988d2cac802SBen Hutchings lm87_write_value(client, LM87_REG_CONFIG, data->config); 9898d5d45fbSJean Delvare return 0; 9908d5d45fbSJean Delvare } 9918d5d45fbSJean Delvare 9928652a264SJean Delvare /* 9938652a264SJean Delvare * Driver data (common to all clients) 9948652a264SJean Delvare */ 9958d5d45fbSJean Delvare 9968652a264SJean Delvare static const struct i2c_device_id lm87_id[] = { 9978652a264SJean Delvare { "lm87", lm87 }, 9988652a264SJean Delvare { "adm1024", adm1024 }, 9998652a264SJean Delvare { } 10008652a264SJean Delvare }; 10018652a264SJean Delvare MODULE_DEVICE_TABLE(i2c, lm87_id); 10028d5d45fbSJean Delvare 10038652a264SJean Delvare static struct i2c_driver lm87_driver = { 10048652a264SJean Delvare .class = I2C_CLASS_HWMON, 10058652a264SJean Delvare .driver = { 10068652a264SJean Delvare .name = "lm87", 10078652a264SJean Delvare }, 10088652a264SJean Delvare .probe = lm87_probe, 10098652a264SJean Delvare .remove = lm87_remove, 10108652a264SJean Delvare .id_table = lm87_id, 10118652a264SJean Delvare .detect = lm87_detect, 10128652a264SJean Delvare .address_list = normal_i2c, 10138652a264SJean Delvare }; 10148d5d45fbSJean Delvare 1015f0967eeaSAxel Lin module_i2c_driver(lm87_driver); 10168d5d45fbSJean Delvare 10177c81c60fSJean Delvare MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de> and others"); 10188d5d45fbSJean Delvare MODULE_DESCRIPTION("LM87 driver"); 10198d5d45fbSJean Delvare MODULE_LICENSE("GPL"); 1020