174ba9207SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 28d5d45fbSJean Delvare /* 38d5d45fbSJean Delvare * lm87.c 48d5d45fbSJean Delvare * 58d5d45fbSJean Delvare * Copyright (C) 2000 Frodo Looijaard <frodol@dds.nl> 68d5d45fbSJean Delvare * Philip Edelbrock <phil@netroedge.com> 78d5d45fbSJean Delvare * Stephen Rousset <stephen.rousset@rocketlogix.com> 88d5d45fbSJean Delvare * Dan Eaton <dan.eaton@rocketlogix.com> 97c81c60fSJean Delvare * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de> 108d5d45fbSJean Delvare * 118d5d45fbSJean Delvare * Original port to Linux 2.6 by Jeff Oliver. 128d5d45fbSJean Delvare * 138d5d45fbSJean Delvare * The LM87 is a sensor chip made by National Semiconductor. It monitors up 148d5d45fbSJean Delvare * to 8 voltages (including its own power source), up to three temperatures 158d5d45fbSJean Delvare * (its own plus up to two external ones) and up to two fans. The default 168d5d45fbSJean Delvare * configuration is 6 voltages, two temperatures and two fans (see below). 178d5d45fbSJean Delvare * Voltages are scaled internally with ratios such that the nominal value of 188d5d45fbSJean Delvare * each voltage correspond to a register value of 192 (which means a 198d5d45fbSJean Delvare * resolution of about 0.5% of the nominal value). Temperature values are 208d5d45fbSJean Delvare * reported with a 1 deg resolution and a 3-4 deg accuracy. Complete 218d5d45fbSJean Delvare * datasheet can be obtained from National's website at: 228d5d45fbSJean Delvare * http://www.national.com/pf/LM/LM87.html 238d5d45fbSJean Delvare * 248d5d45fbSJean Delvare * Some functions share pins, so not all functions are available at the same 2547064d64SBen Hutchings * time. Which are depends on the hardware setup. This driver normally 2647064d64SBen Hutchings * assumes that firmware configured the chip correctly. Where this is not 2747064d64SBen Hutchings * the case, platform code must set the I2C client's platform_data to point 2847064d64SBen Hutchings * to a u8 value to be written to the channel register. 298d5d45fbSJean Delvare * For reference, here is the list of exclusive functions: 308d5d45fbSJean Delvare * - in0+in5 (default) or temp3 318d5d45fbSJean Delvare * - fan1 (default) or in6 328d5d45fbSJean Delvare * - fan2 (default) or in7 338d5d45fbSJean Delvare * - VID lines (default) or IRQ lines (not handled by this driver) 348d5d45fbSJean Delvare * 358d5d45fbSJean Delvare * The LM87 additionally features an analog output, supposedly usable to 368d5d45fbSJean Delvare * control the speed of a fan. All new chips use pulse width modulation 378d5d45fbSJean Delvare * instead. The LM87 is the only hardware monitoring chipset I know of 388d5d45fbSJean Delvare * which uses amplitude modulation. Be careful when using this feature. 398d5d45fbSJean Delvare * 40c7fa3737SJean Delvare * This driver also supports the ADM1024, a sensor chip made by Analog 41c7fa3737SJean Delvare * Devices. That chip is fully compatible with the LM87. Complete 42c7fa3737SJean Delvare * datasheet can be obtained from Analog's website at: 43ad736c1aSAlexander A. Klimov * https://www.analog.com/en/prod/0,2877,ADM1024,00.html 448d5d45fbSJean Delvare */ 458d5d45fbSJean Delvare 468d5d45fbSJean Delvare #include <linux/module.h> 478d5d45fbSJean Delvare #include <linux/init.h> 488d5d45fbSJean Delvare #include <linux/slab.h> 498d5d45fbSJean Delvare #include <linux/jiffies.h> 508d5d45fbSJean Delvare #include <linux/i2c.h> 51943b0830SMark M. Hoffman #include <linux/hwmon.h> 52c2803b98SJean Delvare #include <linux/hwmon-sysfs.h> 53303760b4SJean Delvare #include <linux/hwmon-vid.h> 54943b0830SMark M. Hoffman #include <linux/err.h> 559a61bf63SIngo Molnar #include <linux/mutex.h> 5667043d18SMahoda Ratnayaka #include <linux/regulator/consumer.h> 578d5d45fbSJean Delvare 588d5d45fbSJean Delvare /* 598d5d45fbSJean Delvare * Addresses to scan 608d5d45fbSJean Delvare * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. 618d5d45fbSJean Delvare */ 628d5d45fbSJean Delvare 6325e9c86dSMark M. Hoffman static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; 648d5d45fbSJean Delvare 658d5d45fbSJean Delvare /* 668d5d45fbSJean Delvare * The LM87 registers 678d5d45fbSJean Delvare */ 688d5d45fbSJean Delvare 698d5d45fbSJean Delvare /* nr in 0..5 */ 708d5d45fbSJean Delvare #define LM87_REG_IN(nr) (0x20 + (nr)) 718d5d45fbSJean Delvare #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) 728d5d45fbSJean Delvare #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) 738d5d45fbSJean Delvare /* nr in 0..1 */ 748d5d45fbSJean Delvare #define LM87_REG_AIN(nr) (0x28 + (nr)) 758d5d45fbSJean Delvare #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) 768d5d45fbSJean Delvare #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) 778d5d45fbSJean Delvare 788d5d45fbSJean Delvare static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; 798d5d45fbSJean Delvare static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; 808d5d45fbSJean Delvare static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; 818d5d45fbSJean Delvare 828d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT_LOCK 0x13 838d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 848d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_INT 0x17 858d5d45fbSJean Delvare #define LM87_REG_TEMP_HW_EXT 0x18 868d5d45fbSJean Delvare 878d5d45fbSJean Delvare /* nr in 0..1 */ 888d5d45fbSJean Delvare #define LM87_REG_FAN(nr) (0x28 + (nr)) 898d5d45fbSJean Delvare #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) 908d5d45fbSJean Delvare #define LM87_REG_AOUT 0x19 918d5d45fbSJean Delvare 928d5d45fbSJean Delvare #define LM87_REG_CONFIG 0x40 938d5d45fbSJean Delvare #define LM87_REG_CHANNEL_MODE 0x16 948d5d45fbSJean Delvare #define LM87_REG_VID_FAN_DIV 0x47 958d5d45fbSJean Delvare #define LM87_REG_VID4 0x49 968d5d45fbSJean Delvare 978d5d45fbSJean Delvare #define LM87_REG_ALARMS1 0x41 988d5d45fbSJean Delvare #define LM87_REG_ALARMS2 0x42 998d5d45fbSJean Delvare 1008d5d45fbSJean Delvare #define LM87_REG_COMPANY_ID 0x3E 1018d5d45fbSJean Delvare #define LM87_REG_REVISION 0x3F 1028d5d45fbSJean Delvare 1038d5d45fbSJean Delvare /* 1048d5d45fbSJean Delvare * Conversions and various macros 1058d5d45fbSJean Delvare * The LM87 uses signed 8-bit values for temperatures. 1068d5d45fbSJean Delvare */ 1078d5d45fbSJean Delvare 1088d5d45fbSJean Delvare #define IN_FROM_REG(reg, scale) (((reg) * (scale) + 96) / 192) 1098d5d45fbSJean Delvare #define IN_TO_REG(val, scale) ((val) <= 0 ? 0 : \ 11012fa55ccSGuenter Roeck (val) >= (scale) * 255 / 192 ? 255 : \ 1118d5d45fbSJean Delvare ((val) * 192 + (scale) / 2) / (scale)) 1128d5d45fbSJean Delvare 1138d5d45fbSJean Delvare #define TEMP_FROM_REG(reg) ((reg) * 1000) 1148d5d45fbSJean Delvare #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ 1158d5d45fbSJean Delvare (val) >= 126500 ? 127 : \ 116c6370dbeSGuenter Roeck (((val) < 0 ? (val) - 500 : \ 117c6370dbeSGuenter Roeck (val) + 500) / 1000)) 1188d5d45fbSJean Delvare 1198d5d45fbSJean Delvare #define FAN_FROM_REG(reg, div) ((reg) == 255 || (reg) == 0 ? 0 : \ 120b965d4b7SJean Delvare (1350000 + (reg)*(div) / 2) / ((reg) * (div))) 1218d5d45fbSJean Delvare #define FAN_TO_REG(val, div) ((val) * (div) * 255 <= 1350000 ? 255 : \ 1228d5d45fbSJean Delvare (1350000 + (val)*(div) / 2) / ((val) * (div))) 1238d5d45fbSJean Delvare 1248d5d45fbSJean Delvare #define FAN_DIV_FROM_REG(reg) (1 << (reg)) 1258d5d45fbSJean Delvare 1268d5d45fbSJean Delvare /* analog out is 9.80mV/LSB */ 1278d5d45fbSJean Delvare #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) 1288d5d45fbSJean Delvare #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ 1298d5d45fbSJean Delvare (val) >= 2500 ? 255 : \ 1308d5d45fbSJean Delvare ((val) * 10 + 49) / 98) 1318d5d45fbSJean Delvare 1328d5d45fbSJean Delvare /* nr in 0..1 */ 1338d5d45fbSJean Delvare #define CHAN_NO_FAN(nr) (1 << (nr)) 1348d5d45fbSJean Delvare #define CHAN_TEMP3 (1 << 2) 1358d5d45fbSJean Delvare #define CHAN_VCC_5V (1 << 3) 136889af3d5SJean Delvare #define CHAN_NO_VID (1 << 7) 1378d5d45fbSJean Delvare 1388d5d45fbSJean Delvare /* 1398d5d45fbSJean Delvare * Client data (each client gets its own) 1408d5d45fbSJean Delvare */ 1418d5d45fbSJean Delvare 1428d5d45fbSJean Delvare struct lm87_data { 1439a61bf63SIngo Molnar struct mutex update_lock; 1448d5d45fbSJean Delvare char valid; /* zero until following fields are valid */ 1458d5d45fbSJean Delvare unsigned long last_updated; /* In jiffies */ 1468d5d45fbSJean Delvare 1478d5d45fbSJean Delvare u8 channel; /* register value */ 148d2cac802SBen Hutchings u8 config; /* original register value */ 1498d5d45fbSJean Delvare 1508d5d45fbSJean Delvare u8 in[8]; /* register value */ 1518d5d45fbSJean Delvare u8 in_max[8]; /* register value */ 1528d5d45fbSJean Delvare u8 in_min[8]; /* register value */ 1538d5d45fbSJean Delvare u16 in_scale[8]; 1548d5d45fbSJean Delvare 1558d5d45fbSJean Delvare s8 temp[3]; /* register value */ 1568d5d45fbSJean Delvare s8 temp_high[3]; /* register value */ 1578d5d45fbSJean Delvare s8 temp_low[3]; /* register value */ 1588d5d45fbSJean Delvare s8 temp_crit_int; /* min of two register values */ 1598d5d45fbSJean Delvare s8 temp_crit_ext; /* min of two register values */ 1608d5d45fbSJean Delvare 1618d5d45fbSJean Delvare u8 fan[2]; /* register value */ 1628d5d45fbSJean Delvare u8 fan_min[2]; /* register value */ 1638d5d45fbSJean Delvare u8 fan_div[2]; /* register value, shifted right */ 1648d5d45fbSJean Delvare u8 aout; /* register value */ 1658d5d45fbSJean Delvare 1668d5d45fbSJean Delvare u16 alarms; /* register values, combined */ 1678d5d45fbSJean Delvare u8 vid; /* register values, combined */ 1688d5d45fbSJean Delvare u8 vrm; 16900a0c905SJason Gunthorpe 17000a0c905SJason Gunthorpe const struct attribute_group *attr_groups[6]; 1718d5d45fbSJean Delvare }; 1728d5d45fbSJean Delvare 1738d5d45fbSJean Delvare static inline int lm87_read_value(struct i2c_client *client, u8 reg) 1748d5d45fbSJean Delvare { 1758d5d45fbSJean Delvare return i2c_smbus_read_byte_data(client, reg); 1768d5d45fbSJean Delvare } 1778d5d45fbSJean Delvare 1788d5d45fbSJean Delvare static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) 1798d5d45fbSJean Delvare { 1808d5d45fbSJean Delvare return i2c_smbus_write_byte_data(client, reg, value); 1818d5d45fbSJean Delvare } 1828d5d45fbSJean Delvare 1838652a264SJean Delvare static struct lm87_data *lm87_update_device(struct device *dev) 1848652a264SJean Delvare { 18500a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 1868652a264SJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 1878652a264SJean Delvare 1888652a264SJean Delvare mutex_lock(&data->update_lock); 1898652a264SJean Delvare 1908652a264SJean Delvare if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { 1918652a264SJean Delvare int i, j; 1928652a264SJean Delvare 1938652a264SJean Delvare dev_dbg(&client->dev, "Updating data.\n"); 1948652a264SJean Delvare 1958652a264SJean Delvare i = (data->channel & CHAN_TEMP3) ? 1 : 0; 1968652a264SJean Delvare j = (data->channel & CHAN_TEMP3) ? 5 : 6; 1978652a264SJean Delvare for (; i < j; i++) { 1988652a264SJean Delvare data->in[i] = lm87_read_value(client, 1998652a264SJean Delvare LM87_REG_IN(i)); 2008652a264SJean Delvare data->in_min[i] = lm87_read_value(client, 2018652a264SJean Delvare LM87_REG_IN_MIN(i)); 2028652a264SJean Delvare data->in_max[i] = lm87_read_value(client, 2038652a264SJean Delvare LM87_REG_IN_MAX(i)); 2048652a264SJean Delvare } 2058652a264SJean Delvare 2068652a264SJean Delvare for (i = 0; i < 2; i++) { 2078652a264SJean Delvare if (data->channel & CHAN_NO_FAN(i)) { 2088652a264SJean Delvare data->in[6+i] = lm87_read_value(client, 2098652a264SJean Delvare LM87_REG_AIN(i)); 2108652a264SJean Delvare data->in_max[6+i] = lm87_read_value(client, 2118652a264SJean Delvare LM87_REG_AIN_MAX(i)); 2128652a264SJean Delvare data->in_min[6+i] = lm87_read_value(client, 2138652a264SJean Delvare LM87_REG_AIN_MIN(i)); 2148652a264SJean Delvare 2158652a264SJean Delvare } else { 2168652a264SJean Delvare data->fan[i] = lm87_read_value(client, 2178652a264SJean Delvare LM87_REG_FAN(i)); 2188652a264SJean Delvare data->fan_min[i] = lm87_read_value(client, 2198652a264SJean Delvare LM87_REG_FAN_MIN(i)); 2208652a264SJean Delvare } 2218652a264SJean Delvare } 2228652a264SJean Delvare 2238652a264SJean Delvare j = (data->channel & CHAN_TEMP3) ? 3 : 2; 2248652a264SJean Delvare for (i = 0 ; i < j; i++) { 2258652a264SJean Delvare data->temp[i] = lm87_read_value(client, 2268652a264SJean Delvare LM87_REG_TEMP[i]); 2278652a264SJean Delvare data->temp_high[i] = lm87_read_value(client, 2288652a264SJean Delvare LM87_REG_TEMP_HIGH[i]); 2298652a264SJean Delvare data->temp_low[i] = lm87_read_value(client, 2308652a264SJean Delvare LM87_REG_TEMP_LOW[i]); 2318652a264SJean Delvare } 2328652a264SJean Delvare 2338652a264SJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); 2348652a264SJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); 2358652a264SJean Delvare data->temp_crit_int = min(i, j); 2368652a264SJean Delvare 2378652a264SJean Delvare i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); 2388652a264SJean Delvare j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); 2398652a264SJean Delvare data->temp_crit_ext = min(i, j); 2408652a264SJean Delvare 2418652a264SJean Delvare i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 2428652a264SJean Delvare data->fan_div[0] = (i >> 4) & 0x03; 2438652a264SJean Delvare data->fan_div[1] = (i >> 6) & 0x03; 2448652a264SJean Delvare data->vid = (i & 0x0F) 2458652a264SJean Delvare | (lm87_read_value(client, LM87_REG_VID4) & 0x01) 2468652a264SJean Delvare << 4; 2478652a264SJean Delvare 2488652a264SJean Delvare data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) 2498652a264SJean Delvare | (lm87_read_value(client, LM87_REG_ALARMS2) 2508652a264SJean Delvare << 8); 2518652a264SJean Delvare data->aout = lm87_read_value(client, LM87_REG_AOUT); 2528652a264SJean Delvare 2538652a264SJean Delvare data->last_updated = jiffies; 2548652a264SJean Delvare data->valid = 1; 2558652a264SJean Delvare } 2568652a264SJean Delvare 2578652a264SJean Delvare mutex_unlock(&data->update_lock); 2588652a264SJean Delvare 2598652a264SJean Delvare return data; 2608652a264SJean Delvare } 2618652a264SJean Delvare 2628652a264SJean Delvare /* 2638652a264SJean Delvare * Sysfs stuff 2648652a264SJean Delvare */ 2658652a264SJean Delvare 266f6c93aebSGuenter Roeck static ssize_t in_input_show(struct device *dev, 267f6c93aebSGuenter Roeck struct device_attribute *attr, char *buf) 2680e190b7fSJean Delvare { 2690e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2700e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2718d5d45fbSJean Delvare 2720e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in[nr], 2730e190b7fSJean Delvare data->in_scale[nr])); 2740e190b7fSJean Delvare } 2750e190b7fSJean Delvare 276f6c93aebSGuenter Roeck static ssize_t in_min_show(struct device *dev, struct device_attribute *attr, 277f6c93aebSGuenter Roeck char *buf) 2780e190b7fSJean Delvare { 2790e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2800e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2810e190b7fSJean Delvare 2820e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[nr], 2830e190b7fSJean Delvare data->in_scale[nr])); 2840e190b7fSJean Delvare } 2850e190b7fSJean Delvare 286f6c93aebSGuenter Roeck static ssize_t in_max_show(struct device *dev, struct device_attribute *attr, 287f6c93aebSGuenter Roeck char *buf) 2880e190b7fSJean Delvare { 2890e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 2900e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 2910e190b7fSJean Delvare 2920e190b7fSJean Delvare return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[nr], 2930e190b7fSJean Delvare data->in_scale[nr])); 2940e190b7fSJean Delvare } 2950e190b7fSJean Delvare 296f6c93aebSGuenter Roeck static ssize_t in_min_store(struct device *dev, struct device_attribute *attr, 2970e190b7fSJean Delvare const char *buf, size_t count) 2988d5d45fbSJean Delvare { 29900a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 3008d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3010e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 302c6370dbeSGuenter Roeck long val; 303c6370dbeSGuenter Roeck int err; 304c6370dbeSGuenter Roeck 305c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 306c6370dbeSGuenter Roeck if (err) 307c6370dbeSGuenter Roeck return err; 3088d5d45fbSJean Delvare 3099a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3108d5d45fbSJean Delvare data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); 3118d5d45fbSJean Delvare lm87_write_value(client, nr < 6 ? LM87_REG_IN_MIN(nr) : 3128d5d45fbSJean Delvare LM87_REG_AIN_MIN(nr - 6), data->in_min[nr]); 3139a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 314c6370dbeSGuenter Roeck return count; 3158d5d45fbSJean Delvare } 3168d5d45fbSJean Delvare 317f6c93aebSGuenter Roeck static ssize_t in_max_store(struct device *dev, struct device_attribute *attr, 3180e190b7fSJean Delvare const char *buf, size_t count) 3198d5d45fbSJean Delvare { 32000a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 3218d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3220e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 323c6370dbeSGuenter Roeck long val; 324c6370dbeSGuenter Roeck int err; 325c6370dbeSGuenter Roeck 326c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 327c6370dbeSGuenter Roeck if (err) 328c6370dbeSGuenter Roeck return err; 3298d5d45fbSJean Delvare 3309a61bf63SIngo Molnar mutex_lock(&data->update_lock); 3318d5d45fbSJean Delvare data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); 3328d5d45fbSJean Delvare lm87_write_value(client, nr < 6 ? LM87_REG_IN_MAX(nr) : 3338d5d45fbSJean Delvare LM87_REG_AIN_MAX(nr - 6), data->in_max[nr]); 3349a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 335c6370dbeSGuenter Roeck return count; 3368d5d45fbSJean Delvare } 3378d5d45fbSJean Delvare 338f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in0_input, in_input, 0); 339f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in0_min, in_min, 0); 340f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in0_max, in_max, 0); 341f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in1_input, in_input, 1); 342f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in1_min, in_min, 1); 343f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in1_max, in_max, 1); 344f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in2_input, in_input, 2); 345f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in2_min, in_min, 2); 346f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in2_max, in_max, 2); 347f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in3_input, in_input, 3); 348f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in3_min, in_min, 3); 349f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in3_max, in_max, 3); 350f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in4_input, in_input, 4); 351f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in4_min, in_min, 4); 352f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in4_max, in_max, 4); 353f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in5_input, in_input, 5); 354f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in5_min, in_min, 5); 355f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in5_max, in_max, 5); 356f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in6_input, in_input, 6); 357f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in6_min, in_min, 6); 358f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in6_max, in_max, 6); 359f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in7_input, in_input, 7); 360f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in7_min, in_min, 7); 361f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(in7_max, in_max, 7); 3628d5d45fbSJean Delvare 363f6c93aebSGuenter Roeck static ssize_t temp_input_show(struct device *dev, 3640e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3650e190b7fSJean Delvare { 3660e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3670e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3688d5d45fbSJean Delvare 3690e190b7fSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr])); 3700e190b7fSJean Delvare } 3710e190b7fSJean Delvare 372f6c93aebSGuenter Roeck static ssize_t temp_low_show(struct device *dev, 3730e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3740e190b7fSJean Delvare { 3750e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3760e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3770e190b7fSJean Delvare 3780e190b7fSJean Delvare return sprintf(buf, "%d\n", 3790e190b7fSJean Delvare TEMP_FROM_REG(data->temp_low[nr])); 3800e190b7fSJean Delvare } 3810e190b7fSJean Delvare 382f6c93aebSGuenter Roeck static ssize_t temp_high_show(struct device *dev, 3830e190b7fSJean Delvare struct device_attribute *attr, char *buf) 3840e190b7fSJean Delvare { 3850e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 3860e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 3870e190b7fSJean Delvare 3880e190b7fSJean Delvare return sprintf(buf, "%d\n", 3890e190b7fSJean Delvare TEMP_FROM_REG(data->temp_high[nr])); 3900e190b7fSJean Delvare } 3910e190b7fSJean Delvare 392f6c93aebSGuenter Roeck static ssize_t temp_low_store(struct device *dev, 393f6c93aebSGuenter Roeck struct device_attribute *attr, const char *buf, 394f6c93aebSGuenter Roeck size_t count) 3958d5d45fbSJean Delvare { 39600a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 3978d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 3980e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 399c6370dbeSGuenter Roeck long val; 400c6370dbeSGuenter Roeck int err; 401c6370dbeSGuenter Roeck 402c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 403c6370dbeSGuenter Roeck if (err) 404c6370dbeSGuenter Roeck return err; 4058d5d45fbSJean Delvare 4069a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4078d5d45fbSJean Delvare data->temp_low[nr] = TEMP_TO_REG(val); 4088d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); 4099a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 410c6370dbeSGuenter Roeck return count; 4118d5d45fbSJean Delvare } 4128d5d45fbSJean Delvare 413f6c93aebSGuenter Roeck static ssize_t temp_high_store(struct device *dev, 414f6c93aebSGuenter Roeck struct device_attribute *attr, const char *buf, 415f6c93aebSGuenter Roeck size_t count) 4168d5d45fbSJean Delvare { 41700a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 4188d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4190e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 420c6370dbeSGuenter Roeck long val; 421c6370dbeSGuenter Roeck int err; 422c6370dbeSGuenter Roeck 423c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 424c6370dbeSGuenter Roeck if (err) 425c6370dbeSGuenter Roeck return err; 4268d5d45fbSJean Delvare 4279a61bf63SIngo Molnar mutex_lock(&data->update_lock); 4288d5d45fbSJean Delvare data->temp_high[nr] = TEMP_TO_REG(val); 4298d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); 4309a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 431c6370dbeSGuenter Roeck return count; 4328d5d45fbSJean Delvare } 4338d5d45fbSJean Delvare 434f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(temp1_input, temp_input, 0); 435f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(temp1_min, temp_low, 0); 436f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(temp1_max, temp_high, 0); 437f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(temp2_input, temp_input, 1); 438f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(temp2_min, temp_low, 1); 439f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(temp2_max, temp_high, 1); 440f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(temp3_input, temp_input, 2); 441f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(temp3_min, temp_low, 2); 442f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(temp3_max, temp_high, 2); 4438d5d45fbSJean Delvare 44407a366ccSJulia Lawall static ssize_t temp1_crit_show(struct device *dev, 445c6370dbeSGuenter Roeck struct device_attribute *attr, char *buf) 4468d5d45fbSJean Delvare { 4478d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4488d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); 4498d5d45fbSJean Delvare } 4508d5d45fbSJean Delvare 45107a366ccSJulia Lawall static ssize_t temp2_crit_show(struct device *dev, 452c6370dbeSGuenter Roeck struct device_attribute *attr, char *buf) 4538d5d45fbSJean Delvare { 4548d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4558d5d45fbSJean Delvare return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); 4568d5d45fbSJean Delvare } 4578d5d45fbSJean Delvare 45807a366ccSJulia Lawall static DEVICE_ATTR_RO(temp1_crit); 45907a366ccSJulia Lawall static DEVICE_ATTR_RO(temp2_crit); 460f6c93aebSGuenter Roeck static DEVICE_ATTR(temp3_crit, 0444, temp2_crit_show, NULL); 4618d5d45fbSJean Delvare 462f6c93aebSGuenter Roeck static ssize_t fan_input_show(struct device *dev, 4630e190b7fSJean Delvare struct device_attribute *attr, char *buf) 4640e190b7fSJean Delvare { 4650e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4660e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4678d5d45fbSJean Delvare 4680e190b7fSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], 4690e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr]))); 4700e190b7fSJean Delvare } 4710e190b7fSJean Delvare 472f6c93aebSGuenter Roeck static ssize_t fan_min_show(struct device *dev, struct device_attribute *attr, 473f6c93aebSGuenter Roeck char *buf) 4740e190b7fSJean Delvare { 4750e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4760e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4770e190b7fSJean Delvare 4780e190b7fSJean Delvare return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], 4790e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr]))); 4800e190b7fSJean Delvare } 4810e190b7fSJean Delvare 482f6c93aebSGuenter Roeck static ssize_t fan_div_show(struct device *dev, struct device_attribute *attr, 483f6c93aebSGuenter Roeck char *buf) 4840e190b7fSJean Delvare { 4850e190b7fSJean Delvare struct lm87_data *data = lm87_update_device(dev); 4860e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 4870e190b7fSJean Delvare 4880e190b7fSJean Delvare return sprintf(buf, "%d\n", 4890e190b7fSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 4900e190b7fSJean Delvare } 4910e190b7fSJean Delvare 492f6c93aebSGuenter Roeck static ssize_t fan_min_store(struct device *dev, 493f6c93aebSGuenter Roeck struct device_attribute *attr, const char *buf, 494f6c93aebSGuenter Roeck size_t count) 4958d5d45fbSJean Delvare { 49600a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 4978d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 4980e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 499c6370dbeSGuenter Roeck long val; 500c6370dbeSGuenter Roeck int err; 501c6370dbeSGuenter Roeck 502c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 503c6370dbeSGuenter Roeck if (err) 504c6370dbeSGuenter Roeck return err; 5058d5d45fbSJean Delvare 5069a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5078d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(val, 5088d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 5098d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); 5109a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 511c6370dbeSGuenter Roeck return count; 5128d5d45fbSJean Delvare } 5138d5d45fbSJean Delvare 514c6370dbeSGuenter Roeck /* 515c6370dbeSGuenter Roeck * Note: we save and restore the fan minimum here, because its value is 516c6370dbeSGuenter Roeck * determined in part by the fan clock divider. This follows the principle 517c6370dbeSGuenter Roeck * of least surprise; the user doesn't expect the fan minimum to change just 518c6370dbeSGuenter Roeck * because the divider changed. 519c6370dbeSGuenter Roeck */ 520f6c93aebSGuenter Roeck static ssize_t fan_div_store(struct device *dev, 521f6c93aebSGuenter Roeck struct device_attribute *attr, const char *buf, 522f6c93aebSGuenter Roeck size_t count) 5238d5d45fbSJean Delvare { 52400a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 5258d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 5260e190b7fSJean Delvare int nr = to_sensor_dev_attr(attr)->index; 527c6370dbeSGuenter Roeck long val; 528c6370dbeSGuenter Roeck int err; 5298d5d45fbSJean Delvare unsigned long min; 5308d5d45fbSJean Delvare u8 reg; 5318d5d45fbSJean Delvare 532c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 533c6370dbeSGuenter Roeck if (err) 534c6370dbeSGuenter Roeck return err; 535c6370dbeSGuenter Roeck 5369a61bf63SIngo Molnar mutex_lock(&data->update_lock); 5378d5d45fbSJean Delvare min = FAN_FROM_REG(data->fan_min[nr], 5388d5d45fbSJean Delvare FAN_DIV_FROM_REG(data->fan_div[nr])); 5398d5d45fbSJean Delvare 5408d5d45fbSJean Delvare switch (val) { 541c6370dbeSGuenter Roeck case 1: 542c6370dbeSGuenter Roeck data->fan_div[nr] = 0; 543c6370dbeSGuenter Roeck break; 544c6370dbeSGuenter Roeck case 2: 545c6370dbeSGuenter Roeck data->fan_div[nr] = 1; 546c6370dbeSGuenter Roeck break; 547c6370dbeSGuenter Roeck case 4: 548c6370dbeSGuenter Roeck data->fan_div[nr] = 2; 549c6370dbeSGuenter Roeck break; 550c6370dbeSGuenter Roeck case 8: 551c6370dbeSGuenter Roeck data->fan_div[nr] = 3; 552c6370dbeSGuenter Roeck break; 5538d5d45fbSJean Delvare default: 5549a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5558d5d45fbSJean Delvare return -EINVAL; 5568d5d45fbSJean Delvare } 5578d5d45fbSJean Delvare 5588d5d45fbSJean Delvare reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); 5598d5d45fbSJean Delvare switch (nr) { 5608d5d45fbSJean Delvare case 0: 5618d5d45fbSJean Delvare reg = (reg & 0xCF) | (data->fan_div[0] << 4); 5628d5d45fbSJean Delvare break; 5638d5d45fbSJean Delvare case 1: 5648d5d45fbSJean Delvare reg = (reg & 0x3F) | (data->fan_div[1] << 6); 5658d5d45fbSJean Delvare break; 5668d5d45fbSJean Delvare } 5678d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); 5688d5d45fbSJean Delvare 5698d5d45fbSJean Delvare data->fan_min[nr] = FAN_TO_REG(min, val); 5708d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_FAN_MIN(nr), 5718d5d45fbSJean Delvare data->fan_min[nr]); 5729a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 5738d5d45fbSJean Delvare 5748d5d45fbSJean Delvare return count; 5758d5d45fbSJean Delvare } 5768d5d45fbSJean Delvare 577f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(fan1_input, fan_input, 0); 578f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(fan1_min, fan_min, 0); 579f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(fan1_div, fan_div, 0); 580f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(fan2_input, fan_input, 1); 581f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(fan2_min, fan_min, 1); 582f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RW(fan2_div, fan_div, 1); 5838d5d45fbSJean Delvare 58407a366ccSJulia Lawall static ssize_t alarms_show(struct device *dev, struct device_attribute *attr, 585c6370dbeSGuenter Roeck char *buf) 5868d5d45fbSJean Delvare { 5878d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5888d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->alarms); 5898d5d45fbSJean Delvare } 59007a366ccSJulia Lawall static DEVICE_ATTR_RO(alarms); 5918d5d45fbSJean Delvare 59207a366ccSJulia Lawall static ssize_t cpu0_vid_show(struct device *dev, 59307a366ccSJulia Lawall struct device_attribute *attr, char *buf) 5948d5d45fbSJean Delvare { 5958d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 5968d5d45fbSJean Delvare return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); 5978d5d45fbSJean Delvare } 59807a366ccSJulia Lawall static DEVICE_ATTR_RO(cpu0_vid); 5998d5d45fbSJean Delvare 60007a366ccSJulia Lawall static ssize_t vrm_show(struct device *dev, struct device_attribute *attr, 601c6370dbeSGuenter Roeck char *buf) 6028d5d45fbSJean Delvare { 60390d6619aSJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 6048d5d45fbSJean Delvare return sprintf(buf, "%d\n", data->vrm); 6058d5d45fbSJean Delvare } 60607a366ccSJulia Lawall static ssize_t vrm_store(struct device *dev, struct device_attribute *attr, 607c6370dbeSGuenter Roeck const char *buf, size_t count) 6088d5d45fbSJean Delvare { 6098f74efe8SJean Delvare struct lm87_data *data = dev_get_drvdata(dev); 610c6370dbeSGuenter Roeck unsigned long val; 611c6370dbeSGuenter Roeck int err; 612c6370dbeSGuenter Roeck 613c6370dbeSGuenter Roeck err = kstrtoul(buf, 10, &val); 614c6370dbeSGuenter Roeck if (err) 615c6370dbeSGuenter Roeck return err; 616fa642d9dSAxel Lin 617fa642d9dSAxel Lin if (val > 255) 618fa642d9dSAxel Lin return -EINVAL; 619fa642d9dSAxel Lin 620c6370dbeSGuenter Roeck data->vrm = val; 6218d5d45fbSJean Delvare return count; 6228d5d45fbSJean Delvare } 62307a366ccSJulia Lawall static DEVICE_ATTR_RW(vrm); 6248d5d45fbSJean Delvare 62507a366ccSJulia Lawall static ssize_t aout_output_show(struct device *dev, 62607a366ccSJulia Lawall struct device_attribute *attr, char *buf) 6278d5d45fbSJean Delvare { 6288d5d45fbSJean Delvare struct lm87_data *data = lm87_update_device(dev); 6298d5d45fbSJean Delvare return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); 6308d5d45fbSJean Delvare } 63107a366ccSJulia Lawall static ssize_t aout_output_store(struct device *dev, 63207a366ccSJulia Lawall struct device_attribute *attr, 633c6370dbeSGuenter Roeck const char *buf, size_t count) 6348d5d45fbSJean Delvare { 63500a0c905SJason Gunthorpe struct i2c_client *client = dev_get_drvdata(dev); 6368d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 637c6370dbeSGuenter Roeck long val; 638c6370dbeSGuenter Roeck int err; 639c6370dbeSGuenter Roeck 640c6370dbeSGuenter Roeck err = kstrtol(buf, 10, &val); 641c6370dbeSGuenter Roeck if (err) 642c6370dbeSGuenter Roeck return err; 6438d5d45fbSJean Delvare 6449a61bf63SIngo Molnar mutex_lock(&data->update_lock); 6458d5d45fbSJean Delvare data->aout = AOUT_TO_REG(val); 6468d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AOUT, data->aout); 6479a61bf63SIngo Molnar mutex_unlock(&data->update_lock); 6488d5d45fbSJean Delvare return count; 6498d5d45fbSJean Delvare } 65007a366ccSJulia Lawall static DEVICE_ATTR_RW(aout_output); 6518d5d45fbSJean Delvare 652f6c93aebSGuenter Roeck static ssize_t alarm_show(struct device *dev, struct device_attribute *attr, 653c2803b98SJean Delvare char *buf) 654c2803b98SJean Delvare { 655c2803b98SJean Delvare struct lm87_data *data = lm87_update_device(dev); 656c2803b98SJean Delvare int bitnr = to_sensor_dev_attr(attr)->index; 657c2803b98SJean Delvare return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); 658c2803b98SJean Delvare } 659f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in0_alarm, alarm, 0); 660f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in1_alarm, alarm, 1); 661f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in2_alarm, alarm, 2); 662f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in3_alarm, alarm, 3); 663f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in4_alarm, alarm, 8); 664f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in5_alarm, alarm, 9); 665f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in6_alarm, alarm, 6); 666f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(in7_alarm, alarm, 7); 667f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(temp1_alarm, alarm, 4); 668f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(temp2_alarm, alarm, 5); 669f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(temp3_alarm, alarm, 5); 670f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(fan1_alarm, alarm, 6); 671f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(fan2_alarm, alarm, 7); 672f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(temp2_fault, alarm, 14); 673f6c93aebSGuenter Roeck static SENSOR_DEVICE_ATTR_RO(temp3_fault, alarm, 15); 674c2803b98SJean Delvare 6758d5d45fbSJean Delvare /* 6768d5d45fbSJean Delvare * Real code 6778d5d45fbSJean Delvare */ 6788d5d45fbSJean Delvare 6790501a381SMark M. Hoffman static struct attribute *lm87_attributes[] = { 6800e190b7fSJean Delvare &sensor_dev_attr_in1_input.dev_attr.attr, 6810e190b7fSJean Delvare &sensor_dev_attr_in1_min.dev_attr.attr, 6820e190b7fSJean Delvare &sensor_dev_attr_in1_max.dev_attr.attr, 683c2803b98SJean Delvare &sensor_dev_attr_in1_alarm.dev_attr.attr, 6840e190b7fSJean Delvare &sensor_dev_attr_in2_input.dev_attr.attr, 6850e190b7fSJean Delvare &sensor_dev_attr_in2_min.dev_attr.attr, 6860e190b7fSJean Delvare &sensor_dev_attr_in2_max.dev_attr.attr, 687c2803b98SJean Delvare &sensor_dev_attr_in2_alarm.dev_attr.attr, 6880e190b7fSJean Delvare &sensor_dev_attr_in3_input.dev_attr.attr, 6890e190b7fSJean Delvare &sensor_dev_attr_in3_min.dev_attr.attr, 6900e190b7fSJean Delvare &sensor_dev_attr_in3_max.dev_attr.attr, 691c2803b98SJean Delvare &sensor_dev_attr_in3_alarm.dev_attr.attr, 6920e190b7fSJean Delvare &sensor_dev_attr_in4_input.dev_attr.attr, 6930e190b7fSJean Delvare &sensor_dev_attr_in4_min.dev_attr.attr, 6940e190b7fSJean Delvare &sensor_dev_attr_in4_max.dev_attr.attr, 695c2803b98SJean Delvare &sensor_dev_attr_in4_alarm.dev_attr.attr, 6960501a381SMark M. Hoffman 6970e190b7fSJean Delvare &sensor_dev_attr_temp1_input.dev_attr.attr, 6980e190b7fSJean Delvare &sensor_dev_attr_temp1_max.dev_attr.attr, 6990e190b7fSJean Delvare &sensor_dev_attr_temp1_min.dev_attr.attr, 7000501a381SMark M. Hoffman &dev_attr_temp1_crit.attr, 701c2803b98SJean Delvare &sensor_dev_attr_temp1_alarm.dev_attr.attr, 7020e190b7fSJean Delvare &sensor_dev_attr_temp2_input.dev_attr.attr, 7030e190b7fSJean Delvare &sensor_dev_attr_temp2_max.dev_attr.attr, 7040e190b7fSJean Delvare &sensor_dev_attr_temp2_min.dev_attr.attr, 7050501a381SMark M. Hoffman &dev_attr_temp2_crit.attr, 706c2803b98SJean Delvare &sensor_dev_attr_temp2_alarm.dev_attr.attr, 707c2803b98SJean Delvare &sensor_dev_attr_temp2_fault.dev_attr.attr, 7080501a381SMark M. Hoffman 7090501a381SMark M. Hoffman &dev_attr_alarms.attr, 7100501a381SMark M. Hoffman &dev_attr_aout_output.attr, 7110501a381SMark M. Hoffman 7120501a381SMark M. Hoffman NULL 7130501a381SMark M. Hoffman }; 7140501a381SMark M. Hoffman 7150501a381SMark M. Hoffman static const struct attribute_group lm87_group = { 7160501a381SMark M. Hoffman .attrs = lm87_attributes, 7170501a381SMark M. Hoffman }; 7180501a381SMark M. Hoffman 719073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in6[] = { 7200e190b7fSJean Delvare &sensor_dev_attr_in6_input.dev_attr.attr, 7210e190b7fSJean Delvare &sensor_dev_attr_in6_min.dev_attr.attr, 7220e190b7fSJean Delvare &sensor_dev_attr_in6_max.dev_attr.attr, 723c2803b98SJean Delvare &sensor_dev_attr_in6_alarm.dev_attr.attr, 724073f1e6cSGuenter Roeck NULL 725073f1e6cSGuenter Roeck }; 7260501a381SMark M. Hoffman 727073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in6 = { 728073f1e6cSGuenter Roeck .attrs = lm87_attributes_in6, 729073f1e6cSGuenter Roeck }; 730073f1e6cSGuenter Roeck 731073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_fan1[] = { 7320e190b7fSJean Delvare &sensor_dev_attr_fan1_input.dev_attr.attr, 7330e190b7fSJean Delvare &sensor_dev_attr_fan1_min.dev_attr.attr, 7340e190b7fSJean Delvare &sensor_dev_attr_fan1_div.dev_attr.attr, 735c2803b98SJean Delvare &sensor_dev_attr_fan1_alarm.dev_attr.attr, 736073f1e6cSGuenter Roeck NULL 737073f1e6cSGuenter Roeck }; 7380501a381SMark M. Hoffman 739073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_fan1 = { 740073f1e6cSGuenter Roeck .attrs = lm87_attributes_fan1, 741073f1e6cSGuenter Roeck }; 742073f1e6cSGuenter Roeck 743073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in7[] = { 7440e190b7fSJean Delvare &sensor_dev_attr_in7_input.dev_attr.attr, 7450e190b7fSJean Delvare &sensor_dev_attr_in7_min.dev_attr.attr, 7460e190b7fSJean Delvare &sensor_dev_attr_in7_max.dev_attr.attr, 747c2803b98SJean Delvare &sensor_dev_attr_in7_alarm.dev_attr.attr, 748073f1e6cSGuenter Roeck NULL 749073f1e6cSGuenter Roeck }; 7500501a381SMark M. Hoffman 751073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in7 = { 752073f1e6cSGuenter Roeck .attrs = lm87_attributes_in7, 753073f1e6cSGuenter Roeck }; 754073f1e6cSGuenter Roeck 755073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_fan2[] = { 7560e190b7fSJean Delvare &sensor_dev_attr_fan2_input.dev_attr.attr, 7570e190b7fSJean Delvare &sensor_dev_attr_fan2_min.dev_attr.attr, 7580e190b7fSJean Delvare &sensor_dev_attr_fan2_div.dev_attr.attr, 759c2803b98SJean Delvare &sensor_dev_attr_fan2_alarm.dev_attr.attr, 760073f1e6cSGuenter Roeck NULL 761073f1e6cSGuenter Roeck }; 7620501a381SMark M. Hoffman 763073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_fan2 = { 764073f1e6cSGuenter Roeck .attrs = lm87_attributes_fan2, 765073f1e6cSGuenter Roeck }; 766073f1e6cSGuenter Roeck 767073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_temp3[] = { 7680e190b7fSJean Delvare &sensor_dev_attr_temp3_input.dev_attr.attr, 7690e190b7fSJean Delvare &sensor_dev_attr_temp3_max.dev_attr.attr, 7700e190b7fSJean Delvare &sensor_dev_attr_temp3_min.dev_attr.attr, 7710501a381SMark M. Hoffman &dev_attr_temp3_crit.attr, 772c2803b98SJean Delvare &sensor_dev_attr_temp3_alarm.dev_attr.attr, 773c2803b98SJean Delvare &sensor_dev_attr_temp3_fault.dev_attr.attr, 774073f1e6cSGuenter Roeck NULL 775073f1e6cSGuenter Roeck }; 7760501a381SMark M. Hoffman 777073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_temp3 = { 778073f1e6cSGuenter Roeck .attrs = lm87_attributes_temp3, 779073f1e6cSGuenter Roeck }; 780073f1e6cSGuenter Roeck 781073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_in0_5[] = { 7820e190b7fSJean Delvare &sensor_dev_attr_in0_input.dev_attr.attr, 7830e190b7fSJean Delvare &sensor_dev_attr_in0_min.dev_attr.attr, 7840e190b7fSJean Delvare &sensor_dev_attr_in0_max.dev_attr.attr, 785c2803b98SJean Delvare &sensor_dev_attr_in0_alarm.dev_attr.attr, 7860e190b7fSJean Delvare &sensor_dev_attr_in5_input.dev_attr.attr, 7870e190b7fSJean Delvare &sensor_dev_attr_in5_min.dev_attr.attr, 7880e190b7fSJean Delvare &sensor_dev_attr_in5_max.dev_attr.attr, 789c2803b98SJean Delvare &sensor_dev_attr_in5_alarm.dev_attr.attr, 7900501a381SMark M. Hoffman NULL 7910501a381SMark M. Hoffman }; 7920501a381SMark M. Hoffman 793073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_in0_5 = { 794073f1e6cSGuenter Roeck .attrs = lm87_attributes_in0_5, 795073f1e6cSGuenter Roeck }; 796073f1e6cSGuenter Roeck 797073f1e6cSGuenter Roeck static struct attribute *lm87_attributes_vid[] = { 798073f1e6cSGuenter Roeck &dev_attr_cpu0_vid.attr, 799073f1e6cSGuenter Roeck &dev_attr_vrm.attr, 800073f1e6cSGuenter Roeck NULL 801073f1e6cSGuenter Roeck }; 802073f1e6cSGuenter Roeck 803073f1e6cSGuenter Roeck static const struct attribute_group lm87_group_vid = { 804073f1e6cSGuenter Roeck .attrs = lm87_attributes_vid, 8050501a381SMark M. Hoffman }; 8060501a381SMark M. Hoffman 807a888420aSJean Delvare /* Return 0 if detection is successful, -ENODEV otherwise */ 8088652a264SJean Delvare static int lm87_detect(struct i2c_client *client, struct i2c_board_info *info) 8098d5d45fbSJean Delvare { 8108652a264SJean Delvare struct i2c_adapter *adapter = client->adapter; 81152df6440SJean Delvare const char *name; 81252df6440SJean Delvare u8 cid, rev; 8138d5d45fbSJean Delvare 8148d5d45fbSJean Delvare if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) 815a888420aSJean Delvare return -ENODEV; 8168d5d45fbSJean Delvare 8178652a264SJean Delvare if (lm87_read_value(client, LM87_REG_CONFIG) & 0x80) 81852df6440SJean Delvare return -ENODEV; 8198d5d45fbSJean Delvare 8208d5d45fbSJean Delvare /* Now, we do the remaining detection. */ 8218652a264SJean Delvare cid = lm87_read_value(client, LM87_REG_COMPANY_ID); 8228652a264SJean Delvare rev = lm87_read_value(client, LM87_REG_REVISION); 8238d5d45fbSJean Delvare 824c7fa3737SJean Delvare if (cid == 0x02 /* National Semiconductor */ 825c7fa3737SJean Delvare && (rev >= 0x01 && rev <= 0x08)) 82652df6440SJean Delvare name = "lm87"; 827c7fa3737SJean Delvare else if (cid == 0x41 /* Analog Devices */ 828c7fa3737SJean Delvare && (rev & 0xf0) == 0x10) 82952df6440SJean Delvare name = "adm1024"; 83052df6440SJean Delvare else { 83152df6440SJean Delvare dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", 8328652a264SJean Delvare client->addr); 833a888420aSJean Delvare return -ENODEV; 8348d5d45fbSJean Delvare } 8358d5d45fbSJean Delvare 83652df6440SJean Delvare strlcpy(info->type, name, I2C_NAME_SIZE); 837a888420aSJean Delvare 838a888420aSJean Delvare return 0; 839a888420aSJean Delvare } 840a888420aSJean Delvare 84100a0c905SJason Gunthorpe static void lm87_restore_config(void *arg) 842073f1e6cSGuenter Roeck { 84300a0c905SJason Gunthorpe struct i2c_client *client = arg; 84400a0c905SJason Gunthorpe struct lm87_data *data = i2c_get_clientdata(client); 845073f1e6cSGuenter Roeck 84600a0c905SJason Gunthorpe lm87_write_value(client, LM87_REG_CONFIG, data->config); 847073f1e6cSGuenter Roeck } 848073f1e6cSGuenter Roeck 84900a0c905SJason Gunthorpe static int lm87_init_client(struct i2c_client *client) 8508d5d45fbSJean Delvare { 8518d5d45fbSJean Delvare struct lm87_data *data = i2c_get_clientdata(client); 85200a0c905SJason Gunthorpe int rc; 85367043d18SMahoda Ratnayaka struct device_node *of_node = client->dev.of_node; 85467043d18SMahoda Ratnayaka u8 val = 0; 85567043d18SMahoda Ratnayaka struct regulator *vcc = NULL; 8568d5d45fbSJean Delvare 85767043d18SMahoda Ratnayaka if (of_node) { 85867043d18SMahoda Ratnayaka if (of_property_read_bool(of_node, "has-temp3")) 85967043d18SMahoda Ratnayaka val |= CHAN_TEMP3; 86067043d18SMahoda Ratnayaka if (of_property_read_bool(of_node, "has-in6")) 86167043d18SMahoda Ratnayaka val |= CHAN_NO_FAN(0); 86267043d18SMahoda Ratnayaka if (of_property_read_bool(of_node, "has-in7")) 86367043d18SMahoda Ratnayaka val |= CHAN_NO_FAN(1); 86467043d18SMahoda Ratnayaka vcc = devm_regulator_get_optional(&client->dev, "vcc"); 86567043d18SMahoda Ratnayaka if (!IS_ERR(vcc)) { 86667043d18SMahoda Ratnayaka if (regulator_get_voltage(vcc) == 5000000) 86767043d18SMahoda Ratnayaka val |= CHAN_VCC_5V; 86867043d18SMahoda Ratnayaka } 86967043d18SMahoda Ratnayaka data->channel = val; 87067043d18SMahoda Ratnayaka lm87_write_value(client, 87167043d18SMahoda Ratnayaka LM87_REG_CHANNEL_MODE, data->channel); 87267043d18SMahoda Ratnayaka } else if (dev_get_platdata(&client->dev)) { 873a8b3a3a5SJingoo Han data->channel = *(u8 *)dev_get_platdata(&client->dev); 87447064d64SBen Hutchings lm87_write_value(client, 87547064d64SBen Hutchings LM87_REG_CHANNEL_MODE, data->channel); 87647064d64SBen Hutchings } else { 8778d5d45fbSJean Delvare data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); 87847064d64SBen Hutchings } 879d2cac802SBen Hutchings data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; 8808d5d45fbSJean Delvare 88100a0c905SJason Gunthorpe rc = devm_add_action(&client->dev, lm87_restore_config, client); 88200a0c905SJason Gunthorpe if (rc) 88300a0c905SJason Gunthorpe return rc; 88400a0c905SJason Gunthorpe 885d2cac802SBen Hutchings if (!(data->config & 0x01)) { 8868d5d45fbSJean Delvare int i; 8878d5d45fbSJean Delvare 8888d5d45fbSJean Delvare /* Limits are left uninitialized after power-up */ 8898d5d45fbSJean Delvare for (i = 1; i < 6; i++) { 8908d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); 8918d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); 8928d5d45fbSJean Delvare } 8938d5d45fbSJean Delvare for (i = 0; i < 2; i++) { 8948d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); 8958d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); 8968d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); 8978d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); 8988d5d45fbSJean Delvare } 8998d5d45fbSJean Delvare if (data->channel & CHAN_TEMP3) { 9008d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); 9018d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); 9028d5d45fbSJean Delvare } else { 9038d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); 9048d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); 9058d5d45fbSJean Delvare } 9068d5d45fbSJean Delvare } 90749ae6cc8SBen Hutchings 90849ae6cc8SBen Hutchings /* Make sure Start is set and INT#_Clear is clear */ 909d2cac802SBen Hutchings if ((data->config & 0x09) != 0x01) 9108d5d45fbSJean Delvare lm87_write_value(client, LM87_REG_CONFIG, 911d2cac802SBen Hutchings (data->config & 0x77) | 0x01); 91200a0c905SJason Gunthorpe return 0; 9138d5d45fbSJean Delvare } 9148d5d45fbSJean Delvare 9158652a264SJean Delvare static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id) 9168652a264SJean Delvare { 9178652a264SJean Delvare struct lm87_data *data; 91800a0c905SJason Gunthorpe struct device *hwmon_dev; 9198652a264SJean Delvare int err; 92000a0c905SJason Gunthorpe unsigned int group_tail = 0; 9218652a264SJean Delvare 9225ff512b4SGuenter Roeck data = devm_kzalloc(&client->dev, sizeof(struct lm87_data), GFP_KERNEL); 9235ff512b4SGuenter Roeck if (!data) 9245ff512b4SGuenter Roeck return -ENOMEM; 9258652a264SJean Delvare 9268652a264SJean Delvare i2c_set_clientdata(client, data); 9278652a264SJean Delvare mutex_init(&data->update_lock); 9288652a264SJean Delvare 9298652a264SJean Delvare /* Initialize the LM87 chip */ 93000a0c905SJason Gunthorpe err = lm87_init_client(client); 93100a0c905SJason Gunthorpe if (err) 93200a0c905SJason Gunthorpe return err; 9338652a264SJean Delvare 9348652a264SJean Delvare data->in_scale[0] = 2500; 9358652a264SJean Delvare data->in_scale[1] = 2700; 9368652a264SJean Delvare data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; 9378652a264SJean Delvare data->in_scale[3] = 5000; 9388652a264SJean Delvare data->in_scale[4] = 12000; 9398652a264SJean Delvare data->in_scale[5] = 2700; 9408652a264SJean Delvare data->in_scale[6] = 1875; 9418652a264SJean Delvare data->in_scale[7] = 1875; 9428652a264SJean Delvare 94300a0c905SJason Gunthorpe /* 94400a0c905SJason Gunthorpe * Construct the list of attributes, the list depends on the 94500a0c905SJason Gunthorpe * configuration of the chip 94600a0c905SJason Gunthorpe */ 94700a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group; 94800a0c905SJason Gunthorpe if (data->channel & CHAN_NO_FAN(0)) 94900a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in6; 95000a0c905SJason Gunthorpe else 95100a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_fan1; 9528652a264SJean Delvare 95300a0c905SJason Gunthorpe if (data->channel & CHAN_NO_FAN(1)) 95400a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in7; 95500a0c905SJason Gunthorpe else 95600a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_fan2; 9578652a264SJean Delvare 95800a0c905SJason Gunthorpe if (data->channel & CHAN_TEMP3) 95900a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_temp3; 96000a0c905SJason Gunthorpe else 96100a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_in0_5; 9628652a264SJean Delvare 9638652a264SJean Delvare if (!(data->channel & CHAN_NO_VID)) { 9648652a264SJean Delvare data->vrm = vid_which_vrm(); 96500a0c905SJason Gunthorpe data->attr_groups[group_tail++] = &lm87_group_vid; 9668652a264SJean Delvare } 9678652a264SJean Delvare 96800a0c905SJason Gunthorpe hwmon_dev = devm_hwmon_device_register_with_groups( 96900a0c905SJason Gunthorpe &client->dev, client->name, client, data->attr_groups); 97000a0c905SJason Gunthorpe return PTR_ERR_OR_ZERO(hwmon_dev); 9718d5d45fbSJean Delvare } 9728d5d45fbSJean Delvare 9738652a264SJean Delvare /* 9748652a264SJean Delvare * Driver data (common to all clients) 9758652a264SJean Delvare */ 9768d5d45fbSJean Delvare 9778652a264SJean Delvare static const struct i2c_device_id lm87_id[] = { 9780439bf71SJavier Martinez Canillas { "lm87", 0 }, 9790439bf71SJavier Martinez Canillas { "adm1024", 0 }, 9808652a264SJean Delvare { } 9818652a264SJean Delvare }; 9828652a264SJean Delvare MODULE_DEVICE_TABLE(i2c, lm87_id); 9838d5d45fbSJean Delvare 984a02c24a3SJavier Martinez Canillas static const struct of_device_id lm87_of_match[] = { 985a02c24a3SJavier Martinez Canillas { .compatible = "ti,lm87" }, 986a02c24a3SJavier Martinez Canillas { .compatible = "adi,adm1024" }, 987a02c24a3SJavier Martinez Canillas { }, 988a02c24a3SJavier Martinez Canillas }; 989a02c24a3SJavier Martinez Canillas MODULE_DEVICE_TABLE(of, lm87_of_match); 990a02c24a3SJavier Martinez Canillas 9918652a264SJean Delvare static struct i2c_driver lm87_driver = { 9928652a264SJean Delvare .class = I2C_CLASS_HWMON, 9938652a264SJean Delvare .driver = { 9948652a264SJean Delvare .name = "lm87", 995a02c24a3SJavier Martinez Canillas .of_match_table = lm87_of_match, 9968652a264SJean Delvare }, 9978652a264SJean Delvare .probe = lm87_probe, 9988652a264SJean Delvare .id_table = lm87_id, 9998652a264SJean Delvare .detect = lm87_detect, 10008652a264SJean Delvare .address_list = normal_i2c, 10018652a264SJean Delvare }; 10028d5d45fbSJean Delvare 1003f0967eeaSAxel Lin module_i2c_driver(lm87_driver); 10048d5d45fbSJean Delvare 10057c81c60fSJean Delvare MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de> and others"); 10068d5d45fbSJean Delvare MODULE_DESCRIPTION("LM87 driver"); 10078d5d45fbSJean Delvare MODULE_LICENSE("GPL"); 1008