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 : \ 12412fa55ccSGuenter Roeck (val) >= (scale) * 255 / 192 ? 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 { 1579a61bf63SIngo Molnar struct mutex update_lock; 1588d5d45fbSJean Delvare char valid; /* zero until following fields are valid */ 1598d5d45fbSJean Delvare unsigned long last_updated; /* In jiffies */ 1608d5d45fbSJean Delvare 1618d5d45fbSJean Delvare u8 channel; /* register value */ 162d2cac802SBen Hutchings u8 config; /* original register value */ 1638d5d45fbSJean Delvare 1648d5d45fbSJean Delvare u8 in[8]; /* register value */ 1658d5d45fbSJean Delvare u8 in_max[8]; /* register value */ 1668d5d45fbSJean Delvare u8 in_min[8]; /* register value */ 1678d5d45fbSJean Delvare u16 in_scale[8]; 1688d5d45fbSJean Delvare 1698d5d45fbSJean Delvare s8 temp[3]; /* register value */ 1708d5d45fbSJean Delvare s8 temp_high[3]; /* register value */ 1718d5d45fbSJean Delvare s8 temp_low[3]; /* register value */ 1728d5d45fbSJean Delvare s8 temp_crit_int; /* min of two register values */ 1738d5d45fbSJean Delvare s8 temp_crit_ext; /* min of two register values */ 1748d5d45fbSJean Delvare 1758d5d45fbSJean Delvare u8 fan[2]; /* register value */ 1768d5d45fbSJean Delvare u8 fan_min[2]; /* register value */ 1778d5d45fbSJean Delvare u8 fan_div[2]; /* register value, shifted right */ 1788d5d45fbSJean Delvare u8 aout; /* register value */ 1798d5d45fbSJean Delvare 1808d5d45fbSJean Delvare u16 alarms; /* register values, combined */ 1818d5d45fbSJean Delvare u8 vid; /* register values, combined */ 1828d5d45fbSJean Delvare u8 vrm; 18300a0c905SJason Gunthorpe 18400a0c905SJason Gunthorpe const struct attribute_group *attr_groups[6]; 1858d5d45fbSJean Delvare }; 1868d5d45fbSJean Delvare 1878d5d45fbSJean Delvare static inline int lm87_read_value(struct i2c_client *client, u8 reg) 1888d5d45fbSJean Delvare { 1898d5d45fbSJean Delvare return i2c_smbus_read_byte_data(client, reg); 1908d5d45fbSJean Delvare } 1918d5d45fbSJean Delvare 1928d5d45fbSJean Delvare static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) 1938d5d45fbSJean Delvare { 1948d5d45fbSJean Delvare return i2c_smbus_write_byte_data(client, reg, value); 1958d5d45fbSJean Delvare } 1968d5d45fbSJean Delvare 1978652a264SJean Delvare static struct lm87_data *lm87_update_device(struct device *dev) 1988652a264SJean Delvare { 19900a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 2008652a264SJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2018652a264SJean Delvare 2028652a264SJean Delvare mutex_lock(&data->update_lock); 2038652a264SJean Delvare 2048652a264SJean Delvare if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 2058652a264SJean Delvare int i, j; 2068652a264SJean Delvare 2078652a264SJean Delvare dev_dbg(&client->dev, "Updating data.\n"); 2088652a264SJean Delvare 2098652a264SJean Delvare i = (data->channel & CHAN_TEMP3) ? 1 : 0; 2108652a264SJean Delvare j = (data->channel & CHAN_TEMP3) ? 5 : 6; 2118652a264SJean Delvare for (; i < j; i++) { 2128652a264SJean Delvare data->in[i] = lm87_read_value(client, 2138652a264SJean Delvare LM87_REG_IN(i)); 2148652a264SJean Delvare data->in_min[i] = lm87_read_value(client, 2158652a264SJean Delvare LM87_REG_IN_MIN(i)); 2168652a264SJean Delvare data->in_max[i] = lm87_read_value(client, 2178652a264SJean Delvare LM87_REG_IN_MAX(i)); 2188652a264SJean Delvare } 2198652a264SJean Delvare 2208652a264SJean Delvare for (i = 0; i < 2; i++) { 2218652a264SJean Delvare if (data->channel & CHAN_NO_FAN(i)) { 2228652a264SJean Delvare data->in[6+i] = lm87_read_value(client, 2238652a264SJean Delvare LM87_REG_AIN(i)); 2248652a264SJean Delvare data->in_max[6+i] = lm87_read_value(client, 2258652a264SJean Delvare LM87_REG_AIN_MAX(i)); 2268652a264SJean Delvare data->in_min[6+i] = lm87_read_value(client, 2278652a264SJean Delvare LM87_REG_AIN_MIN(i)); 2288652a264SJean Delvare 2298652a264SJean Delvare } else { 2308652a264SJean Delvare data->fan[i] = lm87_read_value(client, 2318652a264SJean Delvare LM87_REG_FAN(i)); 2328652a264SJean Delvare data->fan_min[i] = lm87_read_value(client, 2338652a264SJean Delvare LM87_REG_FAN_MIN(i)); 2348652a264SJean Delvare } 2358652a264SJean Delvare } 2368652a264SJean Delvare 2378652a264SJean Delvare j = (data->channel & CHAN_TEMP3) ? 3 : 2; 2388652a264SJean Delvare for (i = 0 ; i < j; i++) { 2398652a264SJean Delvare data->temp[i] = lm87_read_value(client, 2408652a264SJean Delvare LM87_REG_TEMP[i]); 2418652a264SJean Delvare data->temp_high[i] = lm87_read_value(client, 2428652a264SJean Delvare LM87_REG_TEMP_HIGH[i]); 2438652a264SJean Delvare data->temp_low[i] = lm87_read_value(client, 2448652a264SJean Delvare LM87_REG_TEMP_LOW[i]); 2458652a264SJean Delvare } 2468652a264SJean Delvare 2478652a264SJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); 2488652a264SJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); 2498652a264SJean Delvare data->temp_crit_int = min(i, j); 2508652a264SJean Delvare 2518652a264SJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); 2528652a264SJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); 2538652a264SJean Delvare data->temp_crit_ext = min(i, j); 2548652a264SJean Delvare 2558652a264SJean Delvare i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 2568652a264SJean Delvare data->fan_div[0] = (i >> 4) & 0x03; 2578652a264SJean Delvare data->fan_div[1] = (i >> 6) & 0x03; 2588652a264SJean Delvare data->vid = (i & 0x0F) 2598652a264SJean Delvare | (lm87_read_value(client, LM87_REG_VID4) & 0x01) 2608652a264SJean Delvare << 4; 2618652a264SJean Delvare 2628652a264SJean Delvare data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) 2638652a264SJean Delvare | (lm87_read_value(client, LM87_REG_ALARMS2) 2648652a264SJean Delvare << 8); 2658652a264SJean Delvare data->aout = lm87_read_value(client, LM87_REG_AOUT); 2668652a264SJean Delvare 2678652a264SJean Delvare data->last_updated = jiffies; 2688652a264SJean Delvare data->valid = 1; 2698652a264SJean Delvare } 2708652a264SJean Delvare 2718652a264SJean Delvare mutex_unlock(&data->update_lock); 2728652a264SJean Delvare 2738652a264SJean Delvare return data; 2748652a264SJean Delvare } 2758652a264SJean Delvare 2768652a264SJean Delvare /* 2778652a264SJean Delvare * Sysfs stuff 2788652a264SJean Delvare */ 2798652a264SJean Delvare 2800e190b7fSJean Delvare static ssize_t show_in_input(struct device *dev, struct device_attribute *attr, 2810e190b7fSJean Delvare char *buf) 2820e190b7fSJean Delvare { 2830e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2840e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2858d5d45fbSJean Delvare 2860e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in[nr], 2870e190b7fSJean Delvare data->in_scale[nr])); 2880e190b7fSJean Delvare } 2890e190b7fSJean Delvare 2900e190b7fSJean Delvare static ssize_t show_in_min(struct device *dev, 2910e190b7fSJean Delvare struct device_attribute *attr, char *buf) 2920e190b7fSJean Delvare { 2930e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2940e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2950e190b7fSJean Delvare 2960e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[nr], 2970e190b7fSJean Delvare data->in_scale[nr])); 2980e190b7fSJean Delvare } 2990e190b7fSJean Delvare 3000e190b7fSJean Delvare static ssize_t show_in_max(struct device *dev, 3010e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3020e190b7fSJean Delvare { 3030e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3040e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3050e190b7fSJean Delvare 3060e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[nr], 3070e190b7fSJean Delvare data->in_scale[nr])); 3080e190b7fSJean Delvare } 3090e190b7fSJean Delvare 3100e190b7fSJean Delvare static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 3110e190b7fSJean Delvare const char *buf, size_t count) 3128d5d45fbSJean Delvare { 31300a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 3148d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3150e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 316c6370dbeSGuenter Roeck long val; 317c6370dbeSGuenter Roeck int err; 318c6370dbeSGuenter Roeck 319c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 320c6370dbeSGuenter Roeck if (err) 321c6370dbeSGuenter Roeck return err; 3228d5d45fbSJean Delvare 3239a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3248d5d45fbSJean Delvare data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); 3258d5d45fbSJean Delvare lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : 3268d5d45fbSJean Delvare LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); 3279a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 328c6370dbeSGuenter Roeck return count; 3298d5d45fbSJean Delvare } 3308d5d45fbSJean Delvare 3310e190b7fSJean Delvare static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 3320e190b7fSJean Delvare const char *buf, size_t count) 3338d5d45fbSJean Delvare { 33400a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 3358d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3360e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 337c6370dbeSGuenter Roeck long val; 338c6370dbeSGuenter Roeck int err; 339c6370dbeSGuenter Roeck 340c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 341c6370dbeSGuenter Roeck if (err) 342c6370dbeSGuenter Roeck return err; 3438d5d45fbSJean Delvare 3449a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3458d5d45fbSJean Delvare data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); 3468d5d45fbSJean Delvare lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : 3478d5d45fbSJean Delvare LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); 3489a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 349c6370dbeSGuenter Roeck return count; 3508d5d45fbSJean Delvare } 3518d5d45fbSJean Delvare 3528d5d45fbSJean Delvare #define set_in(offset) \ 3530e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 3540e190b7fSJean Delvare show_in_input, NULL, offset); \ 3550e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 3560e190b7fSJean Delvare show_in_min, set_in_min, offset); \ 3570e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 3580e190b7fSJean Delvare show_in_max, set_in_max, offset) 3598d5d45fbSJean Delvare set_in(0); 3608d5d45fbSJean Delvare set_in(1); 3618d5d45fbSJean Delvare set_in(2); 3628d5d45fbSJean Delvare set_in(3); 3638d5d45fbSJean Delvare set_in(4); 3648d5d45fbSJean Delvare set_in(5); 3658d5d45fbSJean Delvare set_in(6); 3668d5d45fbSJean Delvare set_in(7); 3678d5d45fbSJean Delvare 3680e190b7fSJean Delvare static ssize_t show_temp_input(struct device *dev, 3690e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3700e190b7fSJean Delvare { 3710e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3720e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3738d5d45fbSJean Delvare 3740e190b7fSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); 3750e190b7fSJean Delvare } 3760e190b7fSJean Delvare 3770e190b7fSJean Delvare static ssize_t show_temp_low(struct device *dev, 3780e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3790e190b7fSJean Delvare { 3800e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3810e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3820e190b7fSJean Delvare 3830e190b7fSJean Delvare return sprintf(buf, "%d\n", 3840e190b7fSJean Delvare TEMP_FROM_REG(data->temp_low[nr])); 3850e190b7fSJean Delvare } 3860e190b7fSJean Delvare 3870e190b7fSJean Delvare static ssize_t show_temp_high(struct device *dev, 3880e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3890e190b7fSJean Delvare { 3900e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3910e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3920e190b7fSJean Delvare 3930e190b7fSJean Delvare return sprintf(buf, "%d\n", 3940e190b7fSJean Delvare TEMP_FROM_REG(data->temp_high[nr])); 3950e190b7fSJean Delvare } 3960e190b7fSJean Delvare 3970e190b7fSJean Delvare static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr, 3980e190b7fSJean Delvare const char *buf, size_t count) 3998d5d45fbSJean Delvare { 40000a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 4018d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4020e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 403c6370dbeSGuenter Roeck long val; 404c6370dbeSGuenter Roeck int err; 405c6370dbeSGuenter Roeck 406c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 407c6370dbeSGuenter Roeck if (err) 408c6370dbeSGuenter Roeck return err; 4098d5d45fbSJean Delvare 4109a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4118d5d45fbSJean Delvare data->temp_low[nr] = TEMP_TO_REG(val); 4128d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); 4139a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 414c6370dbeSGuenter Roeck return count; 4158d5d45fbSJean Delvare } 4168d5d45fbSJean Delvare 4170e190b7fSJean Delvare static ssize_t set_temp_high(struct device *dev, struct device_attribute *attr, 4180e190b7fSJean Delvare const char *buf, size_t count) 4198d5d45fbSJean Delvare { 42000a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 4218d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4220e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 423c6370dbeSGuenter Roeck long val; 424c6370dbeSGuenter Roeck int err; 425c6370dbeSGuenter Roeck 426c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 427c6370dbeSGuenter Roeck if (err) 428c6370dbeSGuenter Roeck return err; 4298d5d45fbSJean Delvare 4309a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4318d5d45fbSJean Delvare data->temp_high[nr] = TEMP_TO_REG(val); 4328d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); 4339a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 434c6370dbeSGuenter Roeck return count; 4358d5d45fbSJean Delvare } 4368d5d45fbSJean Delvare 4378d5d45fbSJean Delvare #define set_temp(offset) \ 4380e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 4390e190b7fSJean Delvare show_temp_input, NULL, offset - 1); \ 4400e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 4410e190b7fSJean Delvare show_temp_high, set_temp_high, offset - 1); \ 4420e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 4430e190b7fSJean Delvare show_temp_low, set_temp_low, offset - 1) 4448d5d45fbSJean Delvare set_temp(1); 4458d5d45fbSJean Delvare set_temp(2); 4468d5d45fbSJean Delvare set_temp(3); 4478d5d45fbSJean Delvare 44807a366ccSJulia Lawall static ssize_t temp1_crit_show(struct device *dev, 449c6370dbeSGuenter Roeck struct device_attribute *attr, char *buf) 4508d5d45fbSJean Delvare { 4518d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4528d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); 4538d5d45fbSJean Delvare } 4548d5d45fbSJean Delvare 45507a366ccSJulia Lawall static ssize_t temp2_crit_show(struct device *dev, 456c6370dbeSGuenter Roeck struct device_attribute *attr, char *buf) 4578d5d45fbSJean Delvare { 4588d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4598d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); 4608d5d45fbSJean Delvare } 4618d5d45fbSJean Delvare 46207a366ccSJulia Lawall static DEVICE_ATTR_RO(temp1_crit); 46307a366ccSJulia Lawall static DEVICE_ATTR_RO(temp2_crit); 46407a366ccSJulia Lawall static DEVICE_ATTR(temp3_crit, S_IRUGO, temp2_crit_show, NULL); 4658d5d45fbSJean Delvare 4660e190b7fSJean Delvare static ssize_t show_fan_input(struct device *dev, 4670e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4680e190b7fSJean Delvare { 4690e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4700e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4718d5d45fbSJean Delvare 4720e190b7fSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 4730e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr]))); 4740e190b7fSJean Delvare } 4750e190b7fSJean Delvare 4760e190b7fSJean Delvare static ssize_t show_fan_min(struct device *dev, 4770e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4780e190b7fSJean Delvare { 4790e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4800e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4810e190b7fSJean Delvare 4820e190b7fSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], 4830e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr]))); 4840e190b7fSJean Delvare } 4850e190b7fSJean Delvare 4860e190b7fSJean Delvare static ssize_t show_fan_div(struct device *dev, 4870e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4880e190b7fSJean Delvare { 4890e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4900e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4910e190b7fSJean Delvare 4920e190b7fSJean Delvare return sprintf(buf, "%d\n", 4930e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4940e190b7fSJean Delvare } 4950e190b7fSJean Delvare 4960e190b7fSJean Delvare static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 4970e190b7fSJean Delvare const char *buf, size_t count) 4988d5d45fbSJean Delvare { 49900a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 5008d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5010e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 502c6370dbeSGuenter Roeck long val; 503c6370dbeSGuenter Roeck int err; 504c6370dbeSGuenter Roeck 505c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 506c6370dbeSGuenter Roeck if (err) 507c6370dbeSGuenter Roeck return err; 5088d5d45fbSJean Delvare 5099a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5108d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(val, 5118d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 5128d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); 5139a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 514c6370dbeSGuenter Roeck return count; 5158d5d45fbSJean Delvare } 5168d5d45fbSJean Delvare 517c6370dbeSGuenter Roeck /* 518c6370dbeSGuenter Roeck * Note: we save and restore the fan minimum here, because its value is 519c6370dbeSGuenter Roeck * determined in part by the fan clock divider. This follows the principle 520c6370dbeSGuenter Roeck * of least surprise; the user doesn't expect the fan minimum to change just 521c6370dbeSGuenter Roeck * because the divider changed. 522c6370dbeSGuenter Roeck */ 5230e190b7fSJean Delvare static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 5240e190b7fSJean Delvare const char *buf, size_t count) 5258d5d45fbSJean Delvare { 52600a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 5278d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5280e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 529c6370dbeSGuenter Roeck long val; 530c6370dbeSGuenter Roeck int err; 5318d5d45fbSJean Delvare unsigned long min; 5328d5d45fbSJean Delvare u8 reg; 5338d5d45fbSJean Delvare 534c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 535c6370dbeSGuenter Roeck if (err) 536c6370dbeSGuenter Roeck return err; 537c6370dbeSGuenter Roeck 5389a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5398d5d45fbSJean Delvare min = FAN_FROM_REG(data->fan_min[nr], 5408d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 5418d5d45fbSJean Delvare 5428d5d45fbSJean Delvare switch (val) { 543c6370dbeSGuenter Roeck case 1: 544c6370dbeSGuenter Roeck data->fan_div[nr] = 0; 545c6370dbeSGuenter Roeck break; 546c6370dbeSGuenter Roeck case 2: 547c6370dbeSGuenter Roeck data->fan_div[nr] = 1; 548c6370dbeSGuenter Roeck break; 549c6370dbeSGuenter Roeck case 4: 550c6370dbeSGuenter Roeck data->fan_div[nr] = 2; 551c6370dbeSGuenter Roeck break; 552c6370dbeSGuenter Roeck case 8: 553c6370dbeSGuenter Roeck data->fan_div[nr] = 3; 554c6370dbeSGuenter Roeck break; 5558d5d45fbSJean Delvare default: 5569a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5578d5d45fbSJean Delvare return -EINVAL; 5588d5d45fbSJean Delvare } 5598d5d45fbSJean Delvare 5608d5d45fbSJean Delvare reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 5618d5d45fbSJean Delvare switch (nr) { 5628d5d45fbSJean Delvare case 0: 5638d5d45fbSJean Delvare reg = (reg & 0xCF) | (data->fan_div[0] << 4); 5648d5d45fbSJean Delvare break; 5658d5d45fbSJean Delvare case 1: 5668d5d45fbSJean Delvare reg = (reg & 0x3F) | (data->fan_div[1] << 6); 5678d5d45fbSJean Delvare break; 5688d5d45fbSJean Delvare } 5698d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); 5708d5d45fbSJean Delvare 5718d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(min, val); 5728d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), 5738d5d45fbSJean Delvare data->fan_min[nr]); 5749a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5758d5d45fbSJean Delvare 5768d5d45fbSJean Delvare return count; 5778d5d45fbSJean Delvare } 5788d5d45fbSJean Delvare 5798d5d45fbSJean Delvare #define set_fan(offset) \ 5800e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 5810e190b7fSJean Delvare show_fan_input, NULL, offset - 1); \ 5820e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 5830e190b7fSJean Delvare show_fan_min, set_fan_min, offset - 1); \ 5840e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 5850e190b7fSJean Delvare show_fan_div, set_fan_div, offset - 1) 5868d5d45fbSJean Delvare set_fan(1); 5878d5d45fbSJean Delvare set_fan(2); 5888d5d45fbSJean Delvare 58907a366ccSJulia Lawall static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, 590c6370dbeSGuenter Roeck char *buf) 5918d5d45fbSJean Delvare { 5928d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5938d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->alarms); 5948d5d45fbSJean Delvare } 59507a366ccSJulia Lawall static DEVICE_ATTR_RO(alarms); 5968d5d45fbSJean Delvare 59707a366ccSJulia Lawall static ssize_t cpu0_vid_show(struct device *dev, 59807a366ccSJulia Lawall struct device_attribute *attr, char *buf) 5998d5d45fbSJean Delvare { 6008d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 6018d5d45fbSJean Delvare return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 6028d5d45fbSJean Delvare } 60307a366ccSJulia Lawall static DEVICE_ATTR_RO(cpu0_vid); 6048d5d45fbSJean Delvare 60507a366ccSJulia Lawall static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, 606c6370dbeSGuenter Roeck char *buf) 6078d5d45fbSJean Delvare { 60890d6619aSJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 6098d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->vrm); 6108d5d45fbSJean Delvare } 61107a366ccSJulia Lawall static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, 612c6370dbeSGuenter Roeck const char *buf, size_t count) 6138d5d45fbSJean Delvare { 6148f74efe8SJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 615c6370dbeSGuenter Roeck unsigned long val; 616c6370dbeSGuenter Roeck int err; 617c6370dbeSGuenter Roeck 618c6370dbeSGuenter Roeck err = kstrtoul(buf, 10, &val); 619c6370dbeSGuenter Roeck if (err) 620c6370dbeSGuenter Roeck return err; 621fa642d9dSAxel Lin 622fa642d9dSAxel Lin if (val > 255) 623fa642d9dSAxel Lin return -EINVAL; 624fa642d9dSAxel Lin 625c6370dbeSGuenter Roeck data->vrm = val; 6268d5d45fbSJean Delvare return count; 6278d5d45fbSJean Delvare } 62807a366ccSJulia Lawall static DEVICE_ATTR_RW(vrm); 6298d5d45fbSJean Delvare 63007a366ccSJulia Lawall static ssize_t aout_output_show(struct device *dev, 63107a366ccSJulia Lawall struct device_attribute *attr, char *buf) 6328d5d45fbSJean Delvare { 6338d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 6348d5d45fbSJean Delvare return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); 6358d5d45fbSJean Delvare } 63607a366ccSJulia Lawall static ssize_t aout_output_store(struct device *dev, 63707a366ccSJulia Lawall struct device_attribute *attr, 638c6370dbeSGuenter Roeck const char *buf, size_t count) 6398d5d45fbSJean Delvare { 64000a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 6418d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 642c6370dbeSGuenter Roeck long val; 643c6370dbeSGuenter Roeck int err; 644c6370dbeSGuenter Roeck 645c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 646c6370dbeSGuenter Roeck if (err) 647c6370dbeSGuenter Roeck return err; 6488d5d45fbSJean Delvare 6499a61bf63SIngo Molnar mutex_lock(&data->update_lock); 6508d5d45fbSJean Delvare data->aout = AOUT_TO_REG(val); 6518d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AOUT, data->aout); 6529a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 6538d5d45fbSJean Delvare return count; 6548d5d45fbSJean Delvare } 65507a366ccSJulia Lawall static DEVICE_ATTR_RW(aout_output); 6568d5d45fbSJean Delvare 657c2803b98SJean Delvare static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 658c2803b98SJean Delvare char *buf) 659c2803b98SJean Delvare { 660c2803b98SJean Delvare struct lm87_data *data = lm87_update_device(dev); 661c2803b98SJean Delvare int bitnr = to_sensor_dev_attr(attr)->index; 662c2803b98SJean Delvare return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 663c2803b98SJean Delvare } 664c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 665c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 666c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 667c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 668c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 669c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); 670c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); 671c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); 672c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 673c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 674c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); 675c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); 676c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); 677c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); 678c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 679c2803b98SJean Delvare 6808d5d45fbSJean Delvare /* 6818d5d45fbSJean Delvare * Real code 6828d5d45fbSJean Delvare */ 6838d5d45fbSJean Delvare 6840501a381SMark M. Hoffman static struct attribute *lm87_attributes[] = { 6850e190b7fSJean Delvare &sensor_dev_attr_in1_input.dev_attr.attr, 6860e190b7fSJean Delvare &sensor_dev_attr_in1_min.dev_attr.attr, 6870e190b7fSJean Delvare &sensor_dev_attr_in1_max.dev_attr.attr, 688c2803b98SJean Delvare &sensor_dev_attr_in1_alarm.dev_attr.attr, 6890e190b7fSJean Delvare &sensor_dev_attr_in2_input.dev_attr.attr, 6900e190b7fSJean Delvare &sensor_dev_attr_in2_min.dev_attr.attr, 6910e190b7fSJean Delvare &sensor_dev_attr_in2_max.dev_attr.attr, 692c2803b98SJean Delvare &sensor_dev_attr_in2_alarm.dev_attr.attr, 6930e190b7fSJean Delvare &sensor_dev_attr_in3_input.dev_attr.attr, 6940e190b7fSJean Delvare &sensor_dev_attr_in3_min.dev_attr.attr, 6950e190b7fSJean Delvare &sensor_dev_attr_in3_max.dev_attr.attr, 696c2803b98SJean Delvare &sensor_dev_attr_in3_alarm.dev_attr.attr, 6970e190b7fSJean Delvare &sensor_dev_attr_in4_input.dev_attr.attr, 6980e190b7fSJean Delvare &sensor_dev_attr_in4_min.dev_attr.attr, 6990e190b7fSJean Delvare &sensor_dev_attr_in4_max.dev_attr.attr, 700c2803b98SJean Delvare &sensor_dev_attr_in4_alarm.dev_attr.attr, 7010501a381SMark M. Hoffman 7020e190b7fSJean Delvare &sensor_dev_attr_temp1_input.dev_attr.attr, 7030e190b7fSJean Delvare &sensor_dev_attr_temp1_max.dev_attr.attr, 7040e190b7fSJean Delvare &sensor_dev_attr_temp1_min.dev_attr.attr, 7050501a381SMark M. Hoffman &dev_attr_temp1_crit.attr, 706c2803b98SJean Delvare &sensor_dev_attr_temp1_alarm.dev_attr.attr, 7070e190b7fSJean Delvare &sensor_dev_attr_temp2_input.dev_attr.attr, 7080e190b7fSJean Delvare &sensor_dev_attr_temp2_max.dev_attr.attr, 7090e190b7fSJean Delvare &sensor_dev_attr_temp2_min.dev_attr.attr, 7100501a381SMark M. Hoffman &dev_attr_temp2_crit.attr, 711c2803b98SJean Delvare &sensor_dev_attr_temp2_alarm.dev_attr.attr, 712c2803b98SJean Delvare &sensor_dev_attr_temp2_fault.dev_attr.attr, 7130501a381SMark M. Hoffman 7140501a381SMark M. Hoffman &dev_attr_alarms.attr, 7150501a381SMark M. Hoffman &dev_attr_aout_output.attr, 7160501a381SMark M. Hoffman 7170501a381SMark M. Hoffman NULL 7180501a381SMark M. Hoffman }; 7190501a381SMark M. Hoffman 7200501a381SMark M. Hoffman static const struct attribute_group lm87_group = { 7210501a381SMark M. Hoffman .attrs = lm87_attributes, 7220501a381SMark M. Hoffman }; 7230501a381SMark M. Hoffman 724073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in6[] = { 7250e190b7fSJean Delvare &sensor_dev_attr_in6_input.dev_attr.attr, 7260e190b7fSJean Delvare &sensor_dev_attr_in6_min.dev_attr.attr, 7270e190b7fSJean Delvare &sensor_dev_attr_in6_max.dev_attr.attr, 728c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr.attr, 729073f1e6cSGuenter Roeck NULL 730073f1e6cSGuenter Roeck }; 7310501a381SMark M. Hoffman 732073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in6 = { 733073f1e6cSGuenter Roeck .attrs = lm87_attributes_in6, 734073f1e6cSGuenter Roeck }; 735073f1e6cSGuenter Roeck 736073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_fan1[] = { 7370e190b7fSJean Delvare &sensor_dev_attr_fan1_input.dev_attr.attr, 7380e190b7fSJean Delvare &sensor_dev_attr_fan1_min.dev_attr.attr, 7390e190b7fSJean Delvare &sensor_dev_attr_fan1_div.dev_attr.attr, 740c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr.attr, 741073f1e6cSGuenter Roeck NULL 742073f1e6cSGuenter Roeck }; 7430501a381SMark M. Hoffman 744073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_fan1 = { 745073f1e6cSGuenter Roeck .attrs = lm87_attributes_fan1, 746073f1e6cSGuenter Roeck }; 747073f1e6cSGuenter Roeck 748073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in7[] = { 7490e190b7fSJean Delvare &sensor_dev_attr_in7_input.dev_attr.attr, 7500e190b7fSJean Delvare &sensor_dev_attr_in7_min.dev_attr.attr, 7510e190b7fSJean Delvare &sensor_dev_attr_in7_max.dev_attr.attr, 752c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr.attr, 753073f1e6cSGuenter Roeck NULL 754073f1e6cSGuenter Roeck }; 7550501a381SMark M. Hoffman 756073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in7 = { 757073f1e6cSGuenter Roeck .attrs = lm87_attributes_in7, 758073f1e6cSGuenter Roeck }; 759073f1e6cSGuenter Roeck 760073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_fan2[] = { 7610e190b7fSJean Delvare &sensor_dev_attr_fan2_input.dev_attr.attr, 7620e190b7fSJean Delvare &sensor_dev_attr_fan2_min.dev_attr.attr, 7630e190b7fSJean Delvare &sensor_dev_attr_fan2_div.dev_attr.attr, 764c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr.attr, 765073f1e6cSGuenter Roeck NULL 766073f1e6cSGuenter Roeck }; 7670501a381SMark M. Hoffman 768073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_fan2 = { 769073f1e6cSGuenter Roeck .attrs = lm87_attributes_fan2, 770073f1e6cSGuenter Roeck }; 771073f1e6cSGuenter Roeck 772073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_temp3[] = { 7730e190b7fSJean Delvare &sensor_dev_attr_temp3_input.dev_attr.attr, 7740e190b7fSJean Delvare &sensor_dev_attr_temp3_max.dev_attr.attr, 7750e190b7fSJean Delvare &sensor_dev_attr_temp3_min.dev_attr.attr, 7760501a381SMark M. Hoffman &dev_attr_temp3_crit.attr, 777c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr.attr, 778c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr.attr, 779073f1e6cSGuenter Roeck NULL 780073f1e6cSGuenter Roeck }; 7810501a381SMark M. Hoffman 782073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_temp3 = { 783073f1e6cSGuenter Roeck .attrs = lm87_attributes_temp3, 784073f1e6cSGuenter Roeck }; 785073f1e6cSGuenter Roeck 786073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in0_5[] = { 7870e190b7fSJean Delvare &sensor_dev_attr_in0_input.dev_attr.attr, 7880e190b7fSJean Delvare &sensor_dev_attr_in0_min.dev_attr.attr, 7890e190b7fSJean Delvare &sensor_dev_attr_in0_max.dev_attr.attr, 790c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr.attr, 7910e190b7fSJean Delvare &sensor_dev_attr_in5_input.dev_attr.attr, 7920e190b7fSJean Delvare &sensor_dev_attr_in5_min.dev_attr.attr, 7930e190b7fSJean Delvare &sensor_dev_attr_in5_max.dev_attr.attr, 794c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr.attr, 7950501a381SMark M. Hoffman NULL 7960501a381SMark M. Hoffman }; 7970501a381SMark M. Hoffman 798073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in0_5 = { 799073f1e6cSGuenter Roeck .attrs = lm87_attributes_in0_5, 800073f1e6cSGuenter Roeck }; 801073f1e6cSGuenter Roeck 802073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_vid[] = { 803073f1e6cSGuenter Roeck &dev_attr_cpu0_vid.attr, 804073f1e6cSGuenter Roeck &dev_attr_vrm.attr, 805073f1e6cSGuenter Roeck NULL 806073f1e6cSGuenter Roeck }; 807073f1e6cSGuenter Roeck 808073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_vid = { 809073f1e6cSGuenter Roeck .attrs = lm87_attributes_vid, 8100501a381SMark M. Hoffman }; 8110501a381SMark M. Hoffman 812a888420aSJean Delvare /* Return 0 if detection is successful, -ENODEV otherwise */ 8138652a264SJean Delvare static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) 8148d5d45fbSJean Delvare { 8158652a264SJean Delvare struct i2c_adapter *adapter = client->adapter; 81652df6440SJean Delvare const char *name; 81752df6440SJean Delvare u8 cid, rev; 8188d5d45fbSJean Delvare 8198d5d45fbSJean Delvare if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 820a888420aSJean Delvare return -ENODEV; 8218d5d45fbSJean Delvare 8228652a264SJean Delvare if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) 82352df6440SJean Delvare return -ENODEV; 8248d5d45fbSJean Delvare 8258d5d45fbSJean Delvare /* Now, we do the remaining detection. */ 8268652a264SJean Delvare cid = lm87_read_value(client, LM87_REG_COMPANY_ID); 8278652a264SJean Delvare rev = lm87_read_value(client, LM87_REG_REVISION); 8288d5d45fbSJean Delvare 829c7fa3737SJean Delvare if (cid == 0x02 /* National Semiconductor */ 830c7fa3737SJean Delvare && (rev >= 0x01 && rev <= 0x08)) 83152df6440SJean Delvare name = "lm87"; 832c7fa3737SJean Delvare else if (cid == 0x41 /* Analog Devices */ 833c7fa3737SJean Delvare && (rev & 0xf0) == 0x10) 83452df6440SJean Delvare name = "adm1024"; 83552df6440SJean Delvare else { 83652df6440SJean Delvare dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", 8378652a264SJean Delvare client->addr); 838a888420aSJean Delvare return -ENODEV; 8398d5d45fbSJean Delvare } 8408d5d45fbSJean Delvare 84152df6440SJean Delvare strlcpy(info->type, name, I2C_NAME_SIZE); 842a888420aSJean Delvare 843a888420aSJean Delvare return 0; 844a888420aSJean Delvare } 845a888420aSJean Delvare 84600a0c905SJason Gunthorpe static void lm87_restore_config(void *arg) 847073f1e6cSGuenter Roeck { 84800a0c905SJason Gunthorpe struct i2c_client *client = arg; 84900a0c905SJason Gunthorpe struct lm87_data *data = i2c_get_clientdata(client); 850073f1e6cSGuenter Roeck 85100a0c905SJason Gunthorpe lm87_write_value(client, LM87_REG_CONFIG, data->config); 852073f1e6cSGuenter Roeck } 853073f1e6cSGuenter Roeck 85400a0c905SJason Gunthorpe static int lm87_init_client(struct i2c_client *client) 8558d5d45fbSJean Delvare { 8568d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 85700a0c905SJason Gunthorpe int rc; 8588d5d45fbSJean Delvare 859a8b3a3a5SJingoo Han if (dev_get_platdata(&client->dev)) { 860a8b3a3a5SJingoo Han data->channel = *(u8 *)dev_get_platdata(&client->dev); 86147064d64SBen Hutchings lm87_write_value(client, 86247064d64SBen Hutchings LM87_REG_CHANNEL_MODE, data->channel); 86347064d64SBen Hutchings } else { 8648d5d45fbSJean Delvare data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); 86547064d64SBen Hutchings } 866d2cac802SBen Hutchings data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; 8678d5d45fbSJean Delvare 86800a0c905SJason Gunthorpe rc = devm_add_action(&client->dev, lm87_restore_config, client); 86900a0c905SJason Gunthorpe if (rc) 87000a0c905SJason Gunthorpe return rc; 87100a0c905SJason Gunthorpe 872d2cac802SBen Hutchings if (!(data->config & 0x01)) { 8738d5d45fbSJean Delvare int i; 8748d5d45fbSJean Delvare 8758d5d45fbSJean Delvare /* Limits are left uninitialized after power-up */ 8768d5d45fbSJean Delvare for (i = 1; i < 6; i++) { 8778d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); 8788d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); 8798d5d45fbSJean Delvare } 8808d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 8818d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); 8828d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); 8838d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); 8848d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); 8858d5d45fbSJean Delvare } 8868d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 8878d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); 8888d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); 8898d5d45fbSJean Delvare } else { 8908d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); 8918d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); 8928d5d45fbSJean Delvare } 8938d5d45fbSJean Delvare } 89449ae6cc8SBen Hutchings 89549ae6cc8SBen Hutchings /* Make sure Start is set and INT#_Clear is clear */ 896d2cac802SBen Hutchings if ((data->config & 0x09) != 0x01) 8978d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_CONFIG, 898d2cac802SBen Hutchings (data->config & 0x77) | 0x01); 89900a0c905SJason Gunthorpe return 0; 9008d5d45fbSJean Delvare } 9018d5d45fbSJean Delvare 9028652a264SJean Delvare static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) 9038652a264SJean Delvare { 9048652a264SJean Delvare struct lm87_data *data; 90500a0c905SJason Gunthorpe struct device *hwmon_dev; 9068652a264SJean Delvare int err; 90700a0c905SJason Gunthorpe unsigned int group_tail = 0; 9088652a264SJean Delvare 9095ff512b4SGuenter Roeck data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL); 9105ff512b4SGuenter Roeck if (!data) 9115ff512b4SGuenter Roeck return -ENOMEM; 9128652a264SJean Delvare 9138652a264SJean Delvare i2c_set_clientdata(client, data); 9148652a264SJean Delvare mutex_init(&data->update_lock); 9158652a264SJean Delvare 9168652a264SJean Delvare /* Initialize the LM87 chip */ 91700a0c905SJason Gunthorpe err = lm87_init_client(client); 91800a0c905SJason Gunthorpe if (err) 91900a0c905SJason Gunthorpe return err; 9208652a264SJean Delvare 9218652a264SJean Delvare data->in_scale[0] = 2500; 9228652a264SJean Delvare data->in_scale[1] = 2700; 9238652a264SJean Delvare data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; 9248652a264SJean Delvare data->in_scale[3] = 5000; 9258652a264SJean Delvare data->in_scale[4] = 12000; 9268652a264SJean Delvare data->in_scale[5] = 2700; 9278652a264SJean Delvare data->in_scale[6] = 1875; 9288652a264SJean Delvare data->in_scale[7] = 1875; 9298652a264SJean Delvare 93000a0c905SJason Gunthorpe /* 93100a0c905SJason Gunthorpe * Construct the list of attributes, the list depends on the 93200a0c905SJason Gunthorpe * configuration of the chip 93300a0c905SJason Gunthorpe */ 93400a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group; 93500a0c905SJason Gunthorpe if (data->channel & CHAN_NO_FAN(0)) 93600a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in6; 93700a0c905SJason Gunthorpe else 93800a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_fan1; 9398652a264SJean Delvare 94000a0c905SJason Gunthorpe if (data->channel & CHAN_NO_FAN(1)) 94100a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in7; 94200a0c905SJason Gunthorpe else 94300a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_fan2; 9448652a264SJean Delvare 94500a0c905SJason Gunthorpe if (data->channel & CHAN_TEMP3) 94600a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_temp3; 94700a0c905SJason Gunthorpe else 94800a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in0_5; 9498652a264SJean Delvare 9508652a264SJean Delvare if (!(data->channel & CHAN_NO_VID)) { 9518652a264SJean Delvare data->vrm = vid_which_vrm(); 95200a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_vid; 9538652a264SJean Delvare } 9548652a264SJean Delvare 95500a0c905SJason Gunthorpe hwmon_dev = devm_hwmon_device_register_with_groups( 95600a0c905SJason Gunthorpe &client->dev, client->name, client, data->attr_groups); 95700a0c905SJason Gunthorpe return PTR_ERR_OR_ZERO(hwmon_dev); 9588d5d45fbSJean Delvare } 9598d5d45fbSJean Delvare 9608652a264SJean Delvare /* 9618652a264SJean Delvare * Driver data (common to all clients) 9628652a264SJean Delvare */ 9638d5d45fbSJean Delvare 9648652a264SJean Delvare static const struct i2c_device_id lm87_id[] = { 9658652a264SJean Delvare { "lm87", lm87 }, 9668652a264SJean Delvare { "adm1024", adm1024 }, 9678652a264SJean Delvare { } 9688652a264SJean Delvare }; 9698652a264SJean Delvare MODULE_DEVICE_TABLE(i2c, lm87_id); 9708d5d45fbSJean Delvare 9718652a264SJean Delvare static struct i2c_driver lm87_driver = { 9728652a264SJean Delvare .class = I2C_CLASS_HWMON, 9738652a264SJean Delvare .driver = { 9748652a264SJean Delvare .name = "lm87", 9758652a264SJean Delvare }, 9768652a264SJean Delvare .probe = lm87_probe, 9778652a264SJean Delvare .id_table = lm87_id, 9788652a264SJean Delvare .detect = lm87_detect, 9798652a264SJean Delvare .address_list = normal_i2c, 9808652a264SJean Delvare }; 9818d5d45fbSJean Delvare 982f0967eeaSAxel Lin module_i2c_driver(lm87_driver); 9838d5d45fbSJean Delvare 9847c81c60fSJean Delvare MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de> and others"); 9858d5d45fbSJean Delvare MODULE_DESCRIPTION("LM87 driver"); 9868d5d45fbSJean Delvare MODULE_LICENSE("GPL"); 987