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> 6967043d18SMahoda Ratnayaka #include <linux/regulator/consumer.h> 708d5d45fbSJean Delvare 718d5d45fbSJean Delvare /* 728d5d45fbSJean Delvare * Addresses to scan 738d5d45fbSJean Delvare * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. 748d5d45fbSJean Delvare */ 758d5d45fbSJean Delvare 7625e9c86dSMark M. Hoffman static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 778d5d45fbSJean Delvare 78e5e9f44cSJean Delvare enum chips { lm87, adm1024 }; 798d5d45fbSJean Delvare 808d5d45fbSJean Delvare /* 818d5d45fbSJean Delvare * The LM87 registers 828d5d45fbSJean Delvare */ 838d5d45fbSJean Delvare 848d5d45fbSJean Delvare /* nr in 0..5 */ 858d5d45fbSJean Delvare #define LM87_REG_IN(nr) (0x20 + (nr)) 868d5d45fbSJean Delvare #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) 878d5d45fbSJean Delvare #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) 888d5d45fbSJean Delvare /* nr in 0..1 */ 898d5d45fbSJean Delvare #define LM87_REG_AIN(nr) (0x28 + (nr)) 908d5d45fbSJean Delvare #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) 918d5d45fbSJean Delvare #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) 928d5d45fbSJean Delvare 938d5d45fbSJean Delvare static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; 948d5d45fbSJean Delvare static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; 958d5d45fbSJean Delvare static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; 968d5d45fbSJean Delvare 978d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT_LOCK 0x13 988d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 998d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT 0x17 1008d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT 0x18 1018d5d45fbSJean Delvare 1028d5d45fbSJean Delvare /* nr in 0..1 */ 1038d5d45fbSJean Delvare #define LM87_REG_FAN(nr) (0x28 + (nr)) 1048d5d45fbSJean Delvare #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) 1058d5d45fbSJean Delvare #define LM87_REG_AOUT 0x19 1068d5d45fbSJean Delvare 1078d5d45fbSJean Delvare #define LM87_REG_CONFIG 0x40 1088d5d45fbSJean Delvare #define LM87_REG_CHANNEL_MODE 0x16 1098d5d45fbSJean Delvare #define LM87_REG_VID_FAN_DIV 0x47 1108d5d45fbSJean Delvare #define LM87_REG_VID4 0x49 1118d5d45fbSJean Delvare 1128d5d45fbSJean Delvare #define LM87_REG_ALARMS1 0x41 1138d5d45fbSJean Delvare #define LM87_REG_ALARMS2 0x42 1148d5d45fbSJean Delvare 1158d5d45fbSJean Delvare #define LM87_REG_COMPANY_ID 0x3E 1168d5d45fbSJean Delvare #define LM87_REG_REVISION 0x3F 1178d5d45fbSJean Delvare 1188d5d45fbSJean Delvare /* 1198d5d45fbSJean Delvare * Conversions and various macros 1208d5d45fbSJean Delvare * The LM87 uses signed 8-bit values for temperatures. 1218d5d45fbSJean Delvare */ 1228d5d45fbSJean Delvare 1238d5d45fbSJean Delvare #define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192) 1248d5d45fbSJean Delvare #define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \ 12512fa55ccSGuenter Roeck (val) >= (scale) * 255 / 192 ? 255 : \ 1268d5d45fbSJean Delvare ((val) * 192 + (scale) / 2) / (scale)) 1278d5d45fbSJean Delvare 1288d5d45fbSJean Delvare #define TEMP_FROM_REG(reg) ((reg) * 1000) 1298d5d45fbSJean Delvare #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ 1308d5d45fbSJean Delvare (val) >= 126500 ? 127 : \ 131c6370dbeSGuenter Roeck (((val) < 0 ? (val) - 500 : \ 132c6370dbeSGuenter Roeck (val) + 500) / 1000)) 1338d5d45fbSJean Delvare 1348d5d45fbSJean Delvare #define FAN_FROM_REG(reg, div) ((reg) == 255 || (reg) == 0 ? 0 : \ 135b965d4b7SJean Delvare (1350000 + (reg)*(div) / 2) / ((reg) * (div))) 1368d5d45fbSJean Delvare #define FAN_TO_REG(val, div) ((val) * (div) * 255 <= 1350000 ? 255 : \ 1378d5d45fbSJean Delvare (1350000 + (val)*(div) / 2) / ((val) * (div))) 1388d5d45fbSJean Delvare 1398d5d45fbSJean Delvare #define FAN_DIV_FROM_REG(reg) (1 << (reg)) 1408d5d45fbSJean Delvare 1418d5d45fbSJean Delvare /* analog out is 9.80mV/LSB */ 1428d5d45fbSJean Delvare #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) 1438d5d45fbSJean Delvare #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ 1448d5d45fbSJean Delvare (val) >= 2500 ? 255 : \ 1458d5d45fbSJean Delvare ((val) * 10 + 49) / 98) 1468d5d45fbSJean Delvare 1478d5d45fbSJean Delvare /* nr in 0..1 */ 1488d5d45fbSJean Delvare #define CHAN_NO_FAN(nr) (1 << (nr)) 1498d5d45fbSJean Delvare #define CHAN_TEMP3 (1 << 2) 1508d5d45fbSJean Delvare #define CHAN_VCC_5V (1 << 3) 151889af3d5SJean Delvare #define CHAN_NO_VID (1 << 7) 1528d5d45fbSJean Delvare 1538d5d45fbSJean Delvare /* 1548d5d45fbSJean Delvare * Client data (each client gets its own) 1558d5d45fbSJean Delvare */ 1568d5d45fbSJean Delvare 1578d5d45fbSJean Delvare struct lm87_data { 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; 18400a0c905SJason Gunthorpe 18500a0c905SJason Gunthorpe const struct attribute_group *attr_groups[6]; 1868d5d45fbSJean Delvare }; 1878d5d45fbSJean Delvare 1888d5d45fbSJean Delvare static inline int lm87_read_value(struct i2c_client *client, u8 reg) 1898d5d45fbSJean Delvare { 1908d5d45fbSJean Delvare return i2c_smbus_read_byte_data(client, reg); 1918d5d45fbSJean Delvare } 1928d5d45fbSJean Delvare 1938d5d45fbSJean Delvare static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) 1948d5d45fbSJean Delvare { 1958d5d45fbSJean Delvare return i2c_smbus_write_byte_data(client, reg, value); 1968d5d45fbSJean Delvare } 1978d5d45fbSJean Delvare 1988652a264SJean Delvare static struct lm87_data *lm87_update_device(struct device *dev) 1998652a264SJean Delvare { 20000a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 2018652a264SJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 2028652a264SJean Delvare 2038652a264SJean Delvare mutex_lock(&data->update_lock); 2048652a264SJean Delvare 2058652a264SJean Delvare if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 2068652a264SJean Delvare int i, j; 2078652a264SJean Delvare 2088652a264SJean Delvare dev_dbg(&client->dev, "Updating data.\n"); 2098652a264SJean Delvare 2108652a264SJean Delvare i = (data->channel & CHAN_TEMP3) ? 1 : 0; 2118652a264SJean Delvare j = (data->channel & CHAN_TEMP3) ? 5 : 6; 2128652a264SJean Delvare for (; i < j; i++) { 2138652a264SJean Delvare data->in[i] = lm87_read_value(client, 2148652a264SJean Delvare LM87_REG_IN(i)); 2158652a264SJean Delvare data->in_min[i] = lm87_read_value(client, 2168652a264SJean Delvare LM87_REG_IN_MIN(i)); 2178652a264SJean Delvare data->in_max[i] = lm87_read_value(client, 2188652a264SJean Delvare LM87_REG_IN_MAX(i)); 2198652a264SJean Delvare } 2208652a264SJean Delvare 2218652a264SJean Delvare for (i = 0; i < 2; i++) { 2228652a264SJean Delvare if (data->channel & CHAN_NO_FAN(i)) { 2238652a264SJean Delvare data->in[6+i] = lm87_read_value(client, 2248652a264SJean Delvare LM87_REG_AIN(i)); 2258652a264SJean Delvare data->in_max[6+i] = lm87_read_value(client, 2268652a264SJean Delvare LM87_REG_AIN_MAX(i)); 2278652a264SJean Delvare data->in_min[6+i] = lm87_read_value(client, 2288652a264SJean Delvare LM87_REG_AIN_MIN(i)); 2298652a264SJean Delvare 2308652a264SJean Delvare } else { 2318652a264SJean Delvare data->fan[i] = lm87_read_value(client, 2328652a264SJean Delvare LM87_REG_FAN(i)); 2338652a264SJean Delvare data->fan_min[i] = lm87_read_value(client, 2348652a264SJean Delvare LM87_REG_FAN_MIN(i)); 2358652a264SJean Delvare } 2368652a264SJean Delvare } 2378652a264SJean Delvare 2388652a264SJean Delvare j = (data->channel & CHAN_TEMP3) ? 3 : 2; 2398652a264SJean Delvare for (i = 0 ; i < j; i++) { 2408652a264SJean Delvare data->temp[i] = lm87_read_value(client, 2418652a264SJean Delvare LM87_REG_TEMP[i]); 2428652a264SJean Delvare data->temp_high[i] = lm87_read_value(client, 2438652a264SJean Delvare LM87_REG_TEMP_HIGH[i]); 2448652a264SJean Delvare data->temp_low[i] = lm87_read_value(client, 2458652a264SJean Delvare LM87_REG_TEMP_LOW[i]); 2468652a264SJean Delvare } 2478652a264SJean Delvare 2488652a264SJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); 2498652a264SJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); 2508652a264SJean Delvare data->temp_crit_int = min(i, j); 2518652a264SJean Delvare 2528652a264SJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); 2538652a264SJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); 2548652a264SJean Delvare data->temp_crit_ext = min(i, j); 2558652a264SJean Delvare 2568652a264SJean Delvare i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 2578652a264SJean Delvare data->fan_div[0] = (i >> 4) & 0x03; 2588652a264SJean Delvare data->fan_div[1] = (i >> 6) & 0x03; 2598652a264SJean Delvare data->vid = (i & 0x0F) 2608652a264SJean Delvare | (lm87_read_value(client, LM87_REG_VID4) & 0x01) 2618652a264SJean Delvare << 4; 2628652a264SJean Delvare 2638652a264SJean Delvare data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) 2648652a264SJean Delvare | (lm87_read_value(client, LM87_REG_ALARMS2) 2658652a264SJean Delvare << 8); 2668652a264SJean Delvare data->aout = lm87_read_value(client, LM87_REG_AOUT); 2678652a264SJean Delvare 2688652a264SJean Delvare data->last_updated = jiffies; 2698652a264SJean Delvare data->valid = 1; 2708652a264SJean Delvare } 2718652a264SJean Delvare 2728652a264SJean Delvare mutex_unlock(&data->update_lock); 2738652a264SJean Delvare 2748652a264SJean Delvare return data; 2758652a264SJean Delvare } 2768652a264SJean Delvare 2778652a264SJean Delvare /* 2788652a264SJean Delvare * Sysfs stuff 2798652a264SJean Delvare */ 2808652a264SJean Delvare 2810e190b7fSJean Delvare static ssize_t show_in_input(struct device *dev, struct device_attribute *attr, 2820e190b7fSJean Delvare char *buf) 2830e190b7fSJean Delvare { 2840e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2850e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2868d5d45fbSJean Delvare 2870e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in[nr], 2880e190b7fSJean Delvare data->in_scale[nr])); 2890e190b7fSJean Delvare } 2900e190b7fSJean Delvare 2910e190b7fSJean Delvare static ssize_t show_in_min(struct device *dev, 2920e190b7fSJean Delvare struct device_attribute *attr, char *buf) 2930e190b7fSJean Delvare { 2940e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2950e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2960e190b7fSJean Delvare 2970e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[nr], 2980e190b7fSJean Delvare data->in_scale[nr])); 2990e190b7fSJean Delvare } 3000e190b7fSJean Delvare 3010e190b7fSJean Delvare static ssize_t show_in_max(struct device *dev, 3020e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3030e190b7fSJean Delvare { 3040e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3050e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3060e190b7fSJean Delvare 3070e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[nr], 3080e190b7fSJean Delvare data->in_scale[nr])); 3090e190b7fSJean Delvare } 3100e190b7fSJean Delvare 3110e190b7fSJean Delvare static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, 3120e190b7fSJean Delvare const char *buf, size_t count) 3138d5d45fbSJean Delvare { 31400a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 3158d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3160e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 317c6370dbeSGuenter Roeck long val; 318c6370dbeSGuenter Roeck int err; 319c6370dbeSGuenter Roeck 320c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 321c6370dbeSGuenter Roeck if (err) 322c6370dbeSGuenter Roeck return err; 3238d5d45fbSJean Delvare 3249a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3258d5d45fbSJean Delvare data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); 3268d5d45fbSJean Delvare lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : 3278d5d45fbSJean Delvare LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); 3289a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 329c6370dbeSGuenter Roeck return count; 3308d5d45fbSJean Delvare } 3318d5d45fbSJean Delvare 3320e190b7fSJean Delvare static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, 3330e190b7fSJean Delvare const char *buf, size_t count) 3348d5d45fbSJean Delvare { 33500a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 3368d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3370e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 338c6370dbeSGuenter Roeck long val; 339c6370dbeSGuenter Roeck int err; 340c6370dbeSGuenter Roeck 341c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 342c6370dbeSGuenter Roeck if (err) 343c6370dbeSGuenter Roeck return err; 3448d5d45fbSJean Delvare 3459a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3468d5d45fbSJean Delvare data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); 3478d5d45fbSJean Delvare lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : 3488d5d45fbSJean Delvare LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); 3499a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 350c6370dbeSGuenter Roeck return count; 3518d5d45fbSJean Delvare } 3528d5d45fbSJean Delvare 3538d5d45fbSJean Delvare #define set_in(offset) \ 3540e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ 3550e190b7fSJean Delvare show_in_input, NULL, offset); \ 3560e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ 3570e190b7fSJean Delvare show_in_min, set_in_min, offset); \ 3580e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ 3590e190b7fSJean Delvare show_in_max, set_in_max, offset) 3608d5d45fbSJean Delvare set_in(0); 3618d5d45fbSJean Delvare set_in(1); 3628d5d45fbSJean Delvare set_in(2); 3638d5d45fbSJean Delvare set_in(3); 3648d5d45fbSJean Delvare set_in(4); 3658d5d45fbSJean Delvare set_in(5); 3668d5d45fbSJean Delvare set_in(6); 3678d5d45fbSJean Delvare set_in(7); 3688d5d45fbSJean Delvare 3690e190b7fSJean Delvare static ssize_t show_temp_input(struct device *dev, 3700e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3710e190b7fSJean Delvare { 3720e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3730e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3748d5d45fbSJean Delvare 3750e190b7fSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); 3760e190b7fSJean Delvare } 3770e190b7fSJean Delvare 3780e190b7fSJean Delvare static ssize_t show_temp_low(struct device *dev, 3790e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3800e190b7fSJean Delvare { 3810e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3820e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3830e190b7fSJean Delvare 3840e190b7fSJean Delvare return sprintf(buf, "%d\n", 3850e190b7fSJean Delvare TEMP_FROM_REG(data->temp_low[nr])); 3860e190b7fSJean Delvare } 3870e190b7fSJean Delvare 3880e190b7fSJean Delvare static ssize_t show_temp_high(struct device *dev, 3890e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3900e190b7fSJean Delvare { 3910e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3920e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3930e190b7fSJean Delvare 3940e190b7fSJean Delvare return sprintf(buf, "%d\n", 3950e190b7fSJean Delvare TEMP_FROM_REG(data->temp_high[nr])); 3960e190b7fSJean Delvare } 3970e190b7fSJean Delvare 3980e190b7fSJean Delvare static ssize_t set_temp_low(struct device *dev, struct device_attribute *attr, 3990e190b7fSJean Delvare const char *buf, size_t count) 4008d5d45fbSJean Delvare { 40100a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 4028d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4030e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 404c6370dbeSGuenter Roeck long val; 405c6370dbeSGuenter Roeck int err; 406c6370dbeSGuenter Roeck 407c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 408c6370dbeSGuenter Roeck if (err) 409c6370dbeSGuenter Roeck return err; 4108d5d45fbSJean Delvare 4119a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4128d5d45fbSJean Delvare data->temp_low[nr] = TEMP_TO_REG(val); 4138d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); 4149a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 415c6370dbeSGuenter Roeck return count; 4168d5d45fbSJean Delvare } 4178d5d45fbSJean Delvare 4180e190b7fSJean Delvare static ssize_t set_temp_high(struct device *dev, struct device_attribute *attr, 4190e190b7fSJean Delvare const char *buf, size_t count) 4208d5d45fbSJean Delvare { 42100a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 4228d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4230e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 424c6370dbeSGuenter Roeck long val; 425c6370dbeSGuenter Roeck int err; 426c6370dbeSGuenter Roeck 427c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 428c6370dbeSGuenter Roeck if (err) 429c6370dbeSGuenter Roeck return err; 4308d5d45fbSJean Delvare 4319a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4328d5d45fbSJean Delvare data->temp_high[nr] = TEMP_TO_REG(val); 4338d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); 4349a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 435c6370dbeSGuenter Roeck return count; 4368d5d45fbSJean Delvare } 4378d5d45fbSJean Delvare 4388d5d45fbSJean Delvare #define set_temp(offset) \ 4390e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ 4400e190b7fSJean Delvare show_temp_input, NULL, offset - 1); \ 4410e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ 4420e190b7fSJean Delvare show_temp_high, set_temp_high, offset - 1); \ 4430e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ 4440e190b7fSJean Delvare show_temp_low, set_temp_low, offset - 1) 4458d5d45fbSJean Delvare set_temp(1); 4468d5d45fbSJean Delvare set_temp(2); 4478d5d45fbSJean Delvare set_temp(3); 4488d5d45fbSJean Delvare 44907a366ccSJulia Lawall static ssize_t temp1_crit_show(struct device *dev, 450c6370dbeSGuenter Roeck struct device_attribute *attr, char *buf) 4518d5d45fbSJean Delvare { 4528d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4538d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); 4548d5d45fbSJean Delvare } 4558d5d45fbSJean Delvare 45607a366ccSJulia Lawall static ssize_t temp2_crit_show(struct device *dev, 457c6370dbeSGuenter Roeck struct device_attribute *attr, char *buf) 4588d5d45fbSJean Delvare { 4598d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4608d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); 4618d5d45fbSJean Delvare } 4628d5d45fbSJean Delvare 46307a366ccSJulia Lawall static DEVICE_ATTR_RO(temp1_crit); 46407a366ccSJulia Lawall static DEVICE_ATTR_RO(temp2_crit); 46507a366ccSJulia Lawall static DEVICE_ATTR(temp3_crit, S_IRUGO, temp2_crit_show, NULL); 4668d5d45fbSJean Delvare 4670e190b7fSJean Delvare static ssize_t show_fan_input(struct device *dev, 4680e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4690e190b7fSJean Delvare { 4700e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4710e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4728d5d45fbSJean Delvare 4730e190b7fSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 4740e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr]))); 4750e190b7fSJean Delvare } 4760e190b7fSJean Delvare 4770e190b7fSJean Delvare static ssize_t show_fan_min(struct device *dev, 4780e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4790e190b7fSJean Delvare { 4800e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4810e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4820e190b7fSJean Delvare 4830e190b7fSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], 4840e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr]))); 4850e190b7fSJean Delvare } 4860e190b7fSJean Delvare 4870e190b7fSJean Delvare static ssize_t show_fan_div(struct device *dev, 4880e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4890e190b7fSJean Delvare { 4900e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4910e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4920e190b7fSJean Delvare 4930e190b7fSJean Delvare return sprintf(buf, "%d\n", 4940e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4950e190b7fSJean Delvare } 4960e190b7fSJean Delvare 4970e190b7fSJean Delvare static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, 4980e190b7fSJean Delvare const char *buf, size_t count) 4998d5d45fbSJean Delvare { 50000a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 5018d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5020e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 503c6370dbeSGuenter Roeck long val; 504c6370dbeSGuenter Roeck int err; 505c6370dbeSGuenter Roeck 506c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 507c6370dbeSGuenter Roeck if (err) 508c6370dbeSGuenter Roeck return err; 5098d5d45fbSJean Delvare 5109a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5118d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(val, 5128d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 5138d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); 5149a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 515c6370dbeSGuenter Roeck return count; 5168d5d45fbSJean Delvare } 5178d5d45fbSJean Delvare 518c6370dbeSGuenter Roeck /* 519c6370dbeSGuenter Roeck * Note: we save and restore the fan minimum here, because its value is 520c6370dbeSGuenter Roeck * determined in part by the fan clock divider. This follows the principle 521c6370dbeSGuenter Roeck * of least surprise; the user doesn't expect the fan minimum to change just 522c6370dbeSGuenter Roeck * because the divider changed. 523c6370dbeSGuenter Roeck */ 5240e190b7fSJean Delvare static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, 5250e190b7fSJean Delvare const char *buf, size_t count) 5268d5d45fbSJean Delvare { 52700a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 5288d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5290e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 530c6370dbeSGuenter Roeck long val; 531c6370dbeSGuenter Roeck int err; 5328d5d45fbSJean Delvare unsigned long min; 5338d5d45fbSJean Delvare u8 reg; 5348d5d45fbSJean Delvare 535c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 536c6370dbeSGuenter Roeck if (err) 537c6370dbeSGuenter Roeck return err; 538c6370dbeSGuenter Roeck 5399a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5408d5d45fbSJean Delvare min = FAN_FROM_REG(data->fan_min[nr], 5418d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 5428d5d45fbSJean Delvare 5438d5d45fbSJean Delvare switch (val) { 544c6370dbeSGuenter Roeck case 1: 545c6370dbeSGuenter Roeck data->fan_div[nr] = 0; 546c6370dbeSGuenter Roeck break; 547c6370dbeSGuenter Roeck case 2: 548c6370dbeSGuenter Roeck data->fan_div[nr] = 1; 549c6370dbeSGuenter Roeck break; 550c6370dbeSGuenter Roeck case 4: 551c6370dbeSGuenter Roeck data->fan_div[nr] = 2; 552c6370dbeSGuenter Roeck break; 553c6370dbeSGuenter Roeck case 8: 554c6370dbeSGuenter Roeck data->fan_div[nr] = 3; 555c6370dbeSGuenter Roeck break; 5568d5d45fbSJean Delvare default: 5579a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5588d5d45fbSJean Delvare return -EINVAL; 5598d5d45fbSJean Delvare } 5608d5d45fbSJean Delvare 5618d5d45fbSJean Delvare reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 5628d5d45fbSJean Delvare switch (nr) { 5638d5d45fbSJean Delvare case 0: 5648d5d45fbSJean Delvare reg = (reg & 0xCF) | (data->fan_div[0] << 4); 5658d5d45fbSJean Delvare break; 5668d5d45fbSJean Delvare case 1: 5678d5d45fbSJean Delvare reg = (reg & 0x3F) | (data->fan_div[1] << 6); 5688d5d45fbSJean Delvare break; 5698d5d45fbSJean Delvare } 5708d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); 5718d5d45fbSJean Delvare 5728d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(min, val); 5738d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), 5748d5d45fbSJean Delvare data->fan_min[nr]); 5759a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5768d5d45fbSJean Delvare 5778d5d45fbSJean Delvare return count; 5788d5d45fbSJean Delvare } 5798d5d45fbSJean Delvare 5808d5d45fbSJean Delvare #define set_fan(offset) \ 5810e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ 5820e190b7fSJean Delvare show_fan_input, NULL, offset - 1); \ 5830e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ 5840e190b7fSJean Delvare show_fan_min, set_fan_min, offset - 1); \ 5850e190b7fSJean Delvare static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ 5860e190b7fSJean Delvare show_fan_div, set_fan_div, offset - 1) 5878d5d45fbSJean Delvare set_fan(1); 5888d5d45fbSJean Delvare set_fan(2); 5898d5d45fbSJean Delvare 59007a366ccSJulia Lawall static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, 591c6370dbeSGuenter Roeck char *buf) 5928d5d45fbSJean Delvare { 5938d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5948d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->alarms); 5958d5d45fbSJean Delvare } 59607a366ccSJulia Lawall static DEVICE_ATTR_RO(alarms); 5978d5d45fbSJean Delvare 59807a366ccSJulia Lawall static ssize_t cpu0_vid_show(struct device *dev, 59907a366ccSJulia Lawall struct device_attribute *attr, char *buf) 6008d5d45fbSJean Delvare { 6018d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 6028d5d45fbSJean Delvare return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 6038d5d45fbSJean Delvare } 60407a366ccSJulia Lawall static DEVICE_ATTR_RO(cpu0_vid); 6058d5d45fbSJean Delvare 60607a366ccSJulia Lawall static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, 607c6370dbeSGuenter Roeck char *buf) 6088d5d45fbSJean Delvare { 60990d6619aSJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 6108d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->vrm); 6118d5d45fbSJean Delvare } 61207a366ccSJulia Lawall static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, 613c6370dbeSGuenter Roeck const char *buf, size_t count) 6148d5d45fbSJean Delvare { 6158f74efe8SJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 616c6370dbeSGuenter Roeck unsigned long val; 617c6370dbeSGuenter Roeck int err; 618c6370dbeSGuenter Roeck 619c6370dbeSGuenter Roeck err = kstrtoul(buf, 10, &val); 620c6370dbeSGuenter Roeck if (err) 621c6370dbeSGuenter Roeck return err; 622fa642d9dSAxel Lin 623fa642d9dSAxel Lin if (val > 255) 624fa642d9dSAxel Lin return -EINVAL; 625fa642d9dSAxel Lin 626c6370dbeSGuenter Roeck data->vrm = val; 6278d5d45fbSJean Delvare return count; 6288d5d45fbSJean Delvare } 62907a366ccSJulia Lawall static DEVICE_ATTR_RW(vrm); 6308d5d45fbSJean Delvare 63107a366ccSJulia Lawall static ssize_t aout_output_show(struct device *dev, 63207a366ccSJulia Lawall struct device_attribute *attr, char *buf) 6338d5d45fbSJean Delvare { 6348d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 6358d5d45fbSJean Delvare return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); 6368d5d45fbSJean Delvare } 63707a366ccSJulia Lawall static ssize_t aout_output_store(struct device *dev, 63807a366ccSJulia Lawall struct device_attribute *attr, 639c6370dbeSGuenter Roeck const char *buf, size_t count) 6408d5d45fbSJean Delvare { 64100a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 6428d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 643c6370dbeSGuenter Roeck long val; 644c6370dbeSGuenter Roeck int err; 645c6370dbeSGuenter Roeck 646c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 647c6370dbeSGuenter Roeck if (err) 648c6370dbeSGuenter Roeck return err; 6498d5d45fbSJean Delvare 6509a61bf63SIngo Molnar mutex_lock(&data->update_lock); 6518d5d45fbSJean Delvare data->aout = AOUT_TO_REG(val); 6528d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AOUT, data->aout); 6539a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 6548d5d45fbSJean Delvare return count; 6558d5d45fbSJean Delvare } 65607a366ccSJulia Lawall static DEVICE_ATTR_RW(aout_output); 6578d5d45fbSJean Delvare 658c2803b98SJean Delvare static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, 659c2803b98SJean Delvare char *buf) 660c2803b98SJean Delvare { 661c2803b98SJean Delvare struct lm87_data *data = lm87_update_device(dev); 662c2803b98SJean Delvare int bitnr = to_sensor_dev_attr(attr)->index; 663c2803b98SJean Delvare return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 664c2803b98SJean Delvare } 665c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); 666c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); 667c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); 668c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); 669c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); 670c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); 671c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); 672c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); 673c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); 674c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); 675c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); 676c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); 677c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); 678c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); 679c2803b98SJean Delvare static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); 680c2803b98SJean Delvare 6818d5d45fbSJean Delvare /* 6828d5d45fbSJean Delvare * Real code 6838d5d45fbSJean Delvare */ 6848d5d45fbSJean Delvare 6850501a381SMark M. Hoffman static struct attribute *lm87_attributes[] = { 6860e190b7fSJean Delvare &sensor_dev_attr_in1_input.dev_attr.attr, 6870e190b7fSJean Delvare &sensor_dev_attr_in1_min.dev_attr.attr, 6880e190b7fSJean Delvare &sensor_dev_attr_in1_max.dev_attr.attr, 689c2803b98SJean Delvare &sensor_dev_attr_in1_alarm.dev_attr.attr, 6900e190b7fSJean Delvare &sensor_dev_attr_in2_input.dev_attr.attr, 6910e190b7fSJean Delvare &sensor_dev_attr_in2_min.dev_attr.attr, 6920e190b7fSJean Delvare &sensor_dev_attr_in2_max.dev_attr.attr, 693c2803b98SJean Delvare &sensor_dev_attr_in2_alarm.dev_attr.attr, 6940e190b7fSJean Delvare &sensor_dev_attr_in3_input.dev_attr.attr, 6950e190b7fSJean Delvare &sensor_dev_attr_in3_min.dev_attr.attr, 6960e190b7fSJean Delvare &sensor_dev_attr_in3_max.dev_attr.attr, 697c2803b98SJean Delvare &sensor_dev_attr_in3_alarm.dev_attr.attr, 6980e190b7fSJean Delvare &sensor_dev_attr_in4_input.dev_attr.attr, 6990e190b7fSJean Delvare &sensor_dev_attr_in4_min.dev_attr.attr, 7000e190b7fSJean Delvare &sensor_dev_attr_in4_max.dev_attr.attr, 701c2803b98SJean Delvare &sensor_dev_attr_in4_alarm.dev_attr.attr, 7020501a381SMark M. Hoffman 7030e190b7fSJean Delvare &sensor_dev_attr_temp1_input.dev_attr.attr, 7040e190b7fSJean Delvare &sensor_dev_attr_temp1_max.dev_attr.attr, 7050e190b7fSJean Delvare &sensor_dev_attr_temp1_min.dev_attr.attr, 7060501a381SMark M. Hoffman &dev_attr_temp1_crit.attr, 707c2803b98SJean Delvare &sensor_dev_attr_temp1_alarm.dev_attr.attr, 7080e190b7fSJean Delvare &sensor_dev_attr_temp2_input.dev_attr.attr, 7090e190b7fSJean Delvare &sensor_dev_attr_temp2_max.dev_attr.attr, 7100e190b7fSJean Delvare &sensor_dev_attr_temp2_min.dev_attr.attr, 7110501a381SMark M. Hoffman &dev_attr_temp2_crit.attr, 712c2803b98SJean Delvare &sensor_dev_attr_temp2_alarm.dev_attr.attr, 713c2803b98SJean Delvare &sensor_dev_attr_temp2_fault.dev_attr.attr, 7140501a381SMark M. Hoffman 7150501a381SMark M. Hoffman &dev_attr_alarms.attr, 7160501a381SMark M. Hoffman &dev_attr_aout_output.attr, 7170501a381SMark M. Hoffman 7180501a381SMark M. Hoffman NULL 7190501a381SMark M. Hoffman }; 7200501a381SMark M. Hoffman 7210501a381SMark M. Hoffman static const struct attribute_group lm87_group = { 7220501a381SMark M. Hoffman .attrs = lm87_attributes, 7230501a381SMark M. Hoffman }; 7240501a381SMark M. Hoffman 725073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in6[] = { 7260e190b7fSJean Delvare &sensor_dev_attr_in6_input.dev_attr.attr, 7270e190b7fSJean Delvare &sensor_dev_attr_in6_min.dev_attr.attr, 7280e190b7fSJean Delvare &sensor_dev_attr_in6_max.dev_attr.attr, 729c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr.attr, 730073f1e6cSGuenter Roeck NULL 731073f1e6cSGuenter Roeck }; 7320501a381SMark M. Hoffman 733073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in6 = { 734073f1e6cSGuenter Roeck .attrs = lm87_attributes_in6, 735073f1e6cSGuenter Roeck }; 736073f1e6cSGuenter Roeck 737073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_fan1[] = { 7380e190b7fSJean Delvare &sensor_dev_attr_fan1_input.dev_attr.attr, 7390e190b7fSJean Delvare &sensor_dev_attr_fan1_min.dev_attr.attr, 7400e190b7fSJean Delvare &sensor_dev_attr_fan1_div.dev_attr.attr, 741c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr.attr, 742073f1e6cSGuenter Roeck NULL 743073f1e6cSGuenter Roeck }; 7440501a381SMark M. Hoffman 745073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_fan1 = { 746073f1e6cSGuenter Roeck .attrs = lm87_attributes_fan1, 747073f1e6cSGuenter Roeck }; 748073f1e6cSGuenter Roeck 749073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in7[] = { 7500e190b7fSJean Delvare &sensor_dev_attr_in7_input.dev_attr.attr, 7510e190b7fSJean Delvare &sensor_dev_attr_in7_min.dev_attr.attr, 7520e190b7fSJean Delvare &sensor_dev_attr_in7_max.dev_attr.attr, 753c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr.attr, 754073f1e6cSGuenter Roeck NULL 755073f1e6cSGuenter Roeck }; 7560501a381SMark M. Hoffman 757073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in7 = { 758073f1e6cSGuenter Roeck .attrs = lm87_attributes_in7, 759073f1e6cSGuenter Roeck }; 760073f1e6cSGuenter Roeck 761073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_fan2[] = { 7620e190b7fSJean Delvare &sensor_dev_attr_fan2_input.dev_attr.attr, 7630e190b7fSJean Delvare &sensor_dev_attr_fan2_min.dev_attr.attr, 7640e190b7fSJean Delvare &sensor_dev_attr_fan2_div.dev_attr.attr, 765c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr.attr, 766073f1e6cSGuenter Roeck NULL 767073f1e6cSGuenter Roeck }; 7680501a381SMark M. Hoffman 769073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_fan2 = { 770073f1e6cSGuenter Roeck .attrs = lm87_attributes_fan2, 771073f1e6cSGuenter Roeck }; 772073f1e6cSGuenter Roeck 773073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_temp3[] = { 7740e190b7fSJean Delvare &sensor_dev_attr_temp3_input.dev_attr.attr, 7750e190b7fSJean Delvare &sensor_dev_attr_temp3_max.dev_attr.attr, 7760e190b7fSJean Delvare &sensor_dev_attr_temp3_min.dev_attr.attr, 7770501a381SMark M. Hoffman &dev_attr_temp3_crit.attr, 778c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr.attr, 779c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr.attr, 780073f1e6cSGuenter Roeck NULL 781073f1e6cSGuenter Roeck }; 7820501a381SMark M. Hoffman 783073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_temp3 = { 784073f1e6cSGuenter Roeck .attrs = lm87_attributes_temp3, 785073f1e6cSGuenter Roeck }; 786073f1e6cSGuenter Roeck 787073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in0_5[] = { 7880e190b7fSJean Delvare &sensor_dev_attr_in0_input.dev_attr.attr, 7890e190b7fSJean Delvare &sensor_dev_attr_in0_min.dev_attr.attr, 7900e190b7fSJean Delvare &sensor_dev_attr_in0_max.dev_attr.attr, 791c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr.attr, 7920e190b7fSJean Delvare &sensor_dev_attr_in5_input.dev_attr.attr, 7930e190b7fSJean Delvare &sensor_dev_attr_in5_min.dev_attr.attr, 7940e190b7fSJean Delvare &sensor_dev_attr_in5_max.dev_attr.attr, 795c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr.attr, 7960501a381SMark M. Hoffman NULL 7970501a381SMark M. Hoffman }; 7980501a381SMark M. Hoffman 799073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in0_5 = { 800073f1e6cSGuenter Roeck .attrs = lm87_attributes_in0_5, 801073f1e6cSGuenter Roeck }; 802073f1e6cSGuenter Roeck 803073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_vid[] = { 804073f1e6cSGuenter Roeck &dev_attr_cpu0_vid.attr, 805073f1e6cSGuenter Roeck &dev_attr_vrm.attr, 806073f1e6cSGuenter Roeck NULL 807073f1e6cSGuenter Roeck }; 808073f1e6cSGuenter Roeck 809073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_vid = { 810073f1e6cSGuenter Roeck .attrs = lm87_attributes_vid, 8110501a381SMark M. Hoffman }; 8120501a381SMark M. Hoffman 813a888420aSJean Delvare /* Return 0 if detection is successful, -ENODEV otherwise */ 8148652a264SJean Delvare static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) 8158d5d45fbSJean Delvare { 8168652a264SJean Delvare struct i2c_adapter *adapter = client->adapter; 81752df6440SJean Delvare const char *name; 81852df6440SJean Delvare u8 cid, rev; 8198d5d45fbSJean Delvare 8208d5d45fbSJean Delvare if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 821a888420aSJean Delvare return -ENODEV; 8228d5d45fbSJean Delvare 8238652a264SJean Delvare if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) 82452df6440SJean Delvare return -ENODEV; 8258d5d45fbSJean Delvare 8268d5d45fbSJean Delvare /* Now, we do the remaining detection. */ 8278652a264SJean Delvare cid = lm87_read_value(client, LM87_REG_COMPANY_ID); 8288652a264SJean Delvare rev = lm87_read_value(client, LM87_REG_REVISION); 8298d5d45fbSJean Delvare 830c7fa3737SJean Delvare if (cid == 0x02 /* National Semiconductor */ 831c7fa3737SJean Delvare && (rev >= 0x01 && rev <= 0x08)) 83252df6440SJean Delvare name = "lm87"; 833c7fa3737SJean Delvare else if (cid == 0x41 /* Analog Devices */ 834c7fa3737SJean Delvare && (rev & 0xf0) == 0x10) 83552df6440SJean Delvare name = "adm1024"; 83652df6440SJean Delvare else { 83752df6440SJean Delvare dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", 8388652a264SJean Delvare client->addr); 839a888420aSJean Delvare return -ENODEV; 8408d5d45fbSJean Delvare } 8418d5d45fbSJean Delvare 84252df6440SJean Delvare strlcpy(info->type, name, I2C_NAME_SIZE); 843a888420aSJean Delvare 844a888420aSJean Delvare return 0; 845a888420aSJean Delvare } 846a888420aSJean Delvare 84700a0c905SJason Gunthorpe static void lm87_restore_config(void *arg) 848073f1e6cSGuenter Roeck { 84900a0c905SJason Gunthorpe struct i2c_client *client = arg; 85000a0c905SJason Gunthorpe struct lm87_data *data = i2c_get_clientdata(client); 851073f1e6cSGuenter Roeck 85200a0c905SJason Gunthorpe lm87_write_value(client, LM87_REG_CONFIG, data->config); 853073f1e6cSGuenter Roeck } 854073f1e6cSGuenter Roeck 85500a0c905SJason Gunthorpe static int lm87_init_client(struct i2c_client *client) 8568d5d45fbSJean Delvare { 8578d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 85800a0c905SJason Gunthorpe int rc; 85967043d18SMahoda Ratnayaka struct device_node *of_node = client->dev.of_node; 86067043d18SMahoda Ratnayaka u8 val = 0; 86167043d18SMahoda Ratnayaka struct regulator *vcc = NULL; 8628d5d45fbSJean Delvare 86367043d18SMahoda Ratnayaka if (of_node) { 86467043d18SMahoda Ratnayaka if (of_property_read_bool(of_node, "has-temp3")) 86567043d18SMahoda Ratnayaka val |= CHAN_TEMP3; 86667043d18SMahoda Ratnayaka if (of_property_read_bool(of_node, "has-in6")) 86767043d18SMahoda Ratnayaka val |= CHAN_NO_FAN(0); 86867043d18SMahoda Ratnayaka if (of_property_read_bool(of_node, "has-in7")) 86967043d18SMahoda Ratnayaka val |= CHAN_NO_FAN(1); 87067043d18SMahoda Ratnayaka vcc = devm_regulator_get_optional(&client->dev, "vcc"); 87167043d18SMahoda Ratnayaka if (!IS_ERR(vcc)) { 87267043d18SMahoda Ratnayaka if (regulator_get_voltage(vcc) == 5000000) 87367043d18SMahoda Ratnayaka val |= CHAN_VCC_5V; 87467043d18SMahoda Ratnayaka } 87567043d18SMahoda Ratnayaka data->channel = val; 87667043d18SMahoda Ratnayaka lm87_write_value(client, 87767043d18SMahoda Ratnayaka LM87_REG_CHANNEL_MODE, data->channel); 87867043d18SMahoda Ratnayaka } else if (dev_get_platdata(&client->dev)) { 879a8b3a3a5SJingoo Han data->channel = *(u8 *)dev_get_platdata(&client->dev); 88047064d64SBen Hutchings lm87_write_value(client, 88147064d64SBen Hutchings LM87_REG_CHANNEL_MODE, data->channel); 88247064d64SBen Hutchings } else { 8838d5d45fbSJean Delvare data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); 88447064d64SBen Hutchings } 885d2cac802SBen Hutchings data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; 8868d5d45fbSJean Delvare 88700a0c905SJason Gunthorpe rc = devm_add_action(&client->dev, lm87_restore_config, client); 88800a0c905SJason Gunthorpe if (rc) 88900a0c905SJason Gunthorpe return rc; 89000a0c905SJason Gunthorpe 891d2cac802SBen Hutchings if (!(data->config & 0x01)) { 8928d5d45fbSJean Delvare int i; 8938d5d45fbSJean Delvare 8948d5d45fbSJean Delvare /* Limits are left uninitialized after power-up */ 8958d5d45fbSJean Delvare for (i = 1; i < 6; i++) { 8968d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); 8978d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); 8988d5d45fbSJean Delvare } 8998d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 9008d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); 9018d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); 9028d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); 9038d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); 9048d5d45fbSJean Delvare } 9058d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 9068d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); 9078d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); 9088d5d45fbSJean Delvare } else { 9098d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); 9108d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); 9118d5d45fbSJean Delvare } 9128d5d45fbSJean Delvare } 91349ae6cc8SBen Hutchings 91449ae6cc8SBen Hutchings /* Make sure Start is set and INT#_Clear is clear */ 915d2cac802SBen Hutchings if ((data->config & 0x09) != 0x01) 9168d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_CONFIG, 917d2cac802SBen Hutchings (data->config & 0x77) | 0x01); 91800a0c905SJason Gunthorpe return 0; 9198d5d45fbSJean Delvare } 9208d5d45fbSJean Delvare 9218652a264SJean Delvare static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) 9228652a264SJean Delvare { 9238652a264SJean Delvare struct lm87_data *data; 92400a0c905SJason Gunthorpe struct device *hwmon_dev; 9258652a264SJean Delvare int err; 92600a0c905SJason Gunthorpe unsigned int group_tail = 0; 9278652a264SJean Delvare 9285ff512b4SGuenter Roeck data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL); 9295ff512b4SGuenter Roeck if (!data) 9305ff512b4SGuenter Roeck return -ENOMEM; 9318652a264SJean Delvare 9328652a264SJean Delvare i2c_set_clientdata(client, data); 9338652a264SJean Delvare mutex_init(&data->update_lock); 9348652a264SJean Delvare 9358652a264SJean Delvare /* Initialize the LM87 chip */ 93600a0c905SJason Gunthorpe err = lm87_init_client(client); 93700a0c905SJason Gunthorpe if (err) 93800a0c905SJason Gunthorpe return err; 9398652a264SJean Delvare 9408652a264SJean Delvare data->in_scale[0] = 2500; 9418652a264SJean Delvare data->in_scale[1] = 2700; 9428652a264SJean Delvare data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; 9438652a264SJean Delvare data->in_scale[3] = 5000; 9448652a264SJean Delvare data->in_scale[4] = 12000; 9458652a264SJean Delvare data->in_scale[5] = 2700; 9468652a264SJean Delvare data->in_scale[6] = 1875; 9478652a264SJean Delvare data->in_scale[7] = 1875; 9488652a264SJean Delvare 94900a0c905SJason Gunthorpe /* 95000a0c905SJason Gunthorpe * Construct the list of attributes, the list depends on the 95100a0c905SJason Gunthorpe * configuration of the chip 95200a0c905SJason Gunthorpe */ 95300a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group; 95400a0c905SJason Gunthorpe if (data->channel & CHAN_NO_FAN(0)) 95500a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in6; 95600a0c905SJason Gunthorpe else 95700a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_fan1; 9588652a264SJean Delvare 95900a0c905SJason Gunthorpe if (data->channel & CHAN_NO_FAN(1)) 96000a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in7; 96100a0c905SJason Gunthorpe else 96200a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_fan2; 9638652a264SJean Delvare 96400a0c905SJason Gunthorpe if (data->channel & CHAN_TEMP3) 96500a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_temp3; 96600a0c905SJason Gunthorpe else 96700a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in0_5; 9688652a264SJean Delvare 9698652a264SJean Delvare if (!(data->channel & CHAN_NO_VID)) { 9708652a264SJean Delvare data->vrm = vid_which_vrm(); 97100a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_vid; 9728652a264SJean Delvare } 9738652a264SJean Delvare 97400a0c905SJason Gunthorpe hwmon_dev = devm_hwmon_device_register_with_groups( 97500a0c905SJason Gunthorpe &client->dev, client->name, client, data->attr_groups); 97600a0c905SJason Gunthorpe return PTR_ERR_OR_ZERO(hwmon_dev); 9778d5d45fbSJean Delvare } 9788d5d45fbSJean Delvare 9798652a264SJean Delvare /* 9808652a264SJean Delvare * Driver data (common to all clients) 9818652a264SJean Delvare */ 9828d5d45fbSJean Delvare 9838652a264SJean Delvare static const struct i2c_device_id lm87_id[] = { 9848652a264SJean Delvare { "lm87", lm87 }, 9858652a264SJean Delvare { "adm1024", adm1024 }, 9868652a264SJean Delvare { } 9878652a264SJean Delvare }; 9888652a264SJean Delvare MODULE_DEVICE_TABLE(i2c, lm87_id); 9898d5d45fbSJean Delvare 9908652a264SJean Delvare static struct i2c_driver lm87_driver = { 9918652a264SJean Delvare .class = I2C_CLASS_HWMON, 9928652a264SJean Delvare .driver = { 9938652a264SJean Delvare .name = "lm87", 9948652a264SJean Delvare }, 9958652a264SJean Delvare .probe = lm87_probe, 9968652a264SJean Delvare .id_table = lm87_id, 9978652a264SJean Delvare .detect = lm87_detect, 9988652a264SJean Delvare .address_list = normal_i2c, 9998652a264SJean Delvare }; 10008d5d45fbSJean Delvare 1001f0967eeaSAxel Lin module_i2c_driver(lm87_driver); 10028d5d45fbSJean Delvare 10037c81c60fSJean Delvare MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de> and others"); 10048d5d45fbSJean Delvare MODULE_DESCRIPTION("LM87 driver"); 10058d5d45fbSJean Delvare MODULE_LICENSE("GPL"); 1006