Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * lm87.c |
| 3 | * |
| 4 | * Copyright (C) 2000 Frodo Looijaard <frodol@dds.nl> |
| 5 | * Philip Edelbrock <phil@netroedge.com> |
| 6 | * Stephen Rousset <stephen.rousset@rocketlogix.com> |
| 7 | * Dan Eaton <dan.eaton@rocketlogix.com> |
| 8 | * Copyright (C) 2004 Jean Delvare <khali@linux-fr.org> |
| 9 | * |
| 10 | * Original port to Linux 2.6 by Jeff Oliver. |
| 11 | * |
| 12 | * The LM87 is a sensor chip made by National Semiconductor. It monitors up |
| 13 | * to 8 voltages (including its own power source), up to three temperatures |
| 14 | * (its own plus up to two external ones) and up to two fans. The default |
| 15 | * configuration is 6 voltages, two temperatures and two fans (see below). |
| 16 | * Voltages are scaled internally with ratios such that the nominal value of |
| 17 | * each voltage correspond to a register value of 192 (which means a |
| 18 | * resolution of about 0.5% of the nominal value). Temperature values are |
| 19 | * reported with a 1 deg resolution and a 3-4 deg accuracy. Complete |
| 20 | * datasheet can be obtained from National's website at: |
| 21 | * http://www.national.com/pf/LM/LM87.html |
| 22 | * |
| 23 | * Some functions share pins, so not all functions are available at the same |
| 24 | * time. Which are depends on the hardware setup. This driver assumes that |
| 25 | * the BIOS configured the chip correctly. In that respect, it differs from |
| 26 | * the original driver (from lm_sensors for Linux 2.4), which would force the |
| 27 | * LM87 to an arbitrary, compile-time chosen mode, regardless of the actual |
| 28 | * chipset wiring. |
| 29 | * For reference, here is the list of exclusive functions: |
| 30 | * - in0+in5 (default) or temp3 |
| 31 | * - fan1 (default) or in6 |
| 32 | * - fan2 (default) or in7 |
| 33 | * - VID lines (default) or IRQ lines (not handled by this driver) |
| 34 | * |
| 35 | * The LM87 additionally features an analog output, supposedly usable to |
| 36 | * control the speed of a fan. All new chips use pulse width modulation |
| 37 | * instead. The LM87 is the only hardware monitoring chipset I know of |
| 38 | * which uses amplitude modulation. Be careful when using this feature. |
| 39 | * |
| 40 | * This program is free software; you can redistribute it and/or modify |
| 41 | * it under the terms of the GNU General Public License as published by |
| 42 | * the Free Software Foundation; either version 2 of the License, or |
| 43 | * (at your option) any later version. |
| 44 | * |
| 45 | * This program is distributed in the hope that it will be useful, |
| 46 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 47 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 48 | * GNU General Public License for more details. |
| 49 | * |
| 50 | * You should have received a copy of the GNU General Public License |
| 51 | * along with this program; if not, write to the Free Software |
| 52 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 53 | */ |
| 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #include <linux/module.h> |
| 56 | #include <linux/init.h> |
| 57 | #include <linux/slab.h> |
| 58 | #include <linux/jiffies.h> |
| 59 | #include <linux/i2c.h> |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 60 | #include <linux/hwmon.h> |
Jean Delvare | 303760b | 2005-07-31 21:52:01 +0200 | [diff] [blame] | 61 | #include <linux/hwmon-vid.h> |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 62 | #include <linux/err.h> |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 63 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
| 65 | /* |
| 66 | * Addresses to scan |
| 67 | * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. |
| 68 | */ |
| 69 | |
| 70 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
| 72 | /* |
| 73 | * Insmod parameters |
| 74 | */ |
| 75 | |
Jean Delvare | f4b5026 | 2005-07-31 21:49:03 +0200 | [diff] [blame] | 76 | I2C_CLIENT_INSMOD_1(lm87); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
| 78 | /* |
| 79 | * The LM87 registers |
| 80 | */ |
| 81 | |
| 82 | /* nr in 0..5 */ |
| 83 | #define LM87_REG_IN(nr) (0x20 + (nr)) |
| 84 | #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) |
| 85 | #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) |
| 86 | /* nr in 0..1 */ |
| 87 | #define LM87_REG_AIN(nr) (0x28 + (nr)) |
| 88 | #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) |
| 89 | #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) |
| 90 | |
| 91 | static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; |
| 92 | static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; |
| 93 | static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; |
| 94 | |
| 95 | #define LM87_REG_TEMP_HW_INT_LOCK 0x13 |
| 96 | #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 |
| 97 | #define LM87_REG_TEMP_HW_INT 0x17 |
| 98 | #define LM87_REG_TEMP_HW_EXT 0x18 |
| 99 | |
| 100 | /* nr in 0..1 */ |
| 101 | #define LM87_REG_FAN(nr) (0x28 + (nr)) |
| 102 | #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) |
| 103 | #define LM87_REG_AOUT 0x19 |
| 104 | |
| 105 | #define LM87_REG_CONFIG 0x40 |
| 106 | #define LM87_REG_CHANNEL_MODE 0x16 |
| 107 | #define LM87_REG_VID_FAN_DIV 0x47 |
| 108 | #define LM87_REG_VID4 0x49 |
| 109 | |
| 110 | #define LM87_REG_ALARMS1 0x41 |
| 111 | #define LM87_REG_ALARMS2 0x42 |
| 112 | |
| 113 | #define LM87_REG_COMPANY_ID 0x3E |
| 114 | #define LM87_REG_REVISION 0x3F |
| 115 | |
| 116 | /* |
| 117 | * Conversions and various macros |
| 118 | * The LM87 uses signed 8-bit values for temperatures. |
| 119 | */ |
| 120 | |
| 121 | #define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192) |
| 122 | #define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \ |
| 123 | (val) * 192 >= (scale) * 255 ? 255 : \ |
| 124 | ((val) * 192 + (scale)/2) / (scale)) |
| 125 | |
| 126 | #define TEMP_FROM_REG(reg) ((reg) * 1000) |
| 127 | #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ |
| 128 | (val) >= 126500 ? 127 : \ |
| 129 | (((val) < 0 ? (val)-500 : (val)+500) / 1000)) |
| 130 | |
| 131 | #define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \ |
| 132 | 1350000 + (reg)*(div) / 2) / ((reg)*(div)) |
| 133 | #define FAN_TO_REG(val,div) ((val)*(div) * 255 <= 1350000 ? 255 : \ |
| 134 | (1350000 + (val)*(div) / 2) / ((val)*(div))) |
| 135 | |
| 136 | #define FAN_DIV_FROM_REG(reg) (1 << (reg)) |
| 137 | |
| 138 | /* analog out is 9.80mV/LSB */ |
| 139 | #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) |
| 140 | #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ |
| 141 | (val) >= 2500 ? 255 : \ |
| 142 | ((val) * 10 + 49) / 98) |
| 143 | |
| 144 | /* nr in 0..1 */ |
| 145 | #define CHAN_NO_FAN(nr) (1 << (nr)) |
| 146 | #define CHAN_TEMP3 (1 << 2) |
| 147 | #define CHAN_VCC_5V (1 << 3) |
| 148 | #define CHAN_NO_VID (1 << 8) |
| 149 | |
| 150 | /* |
| 151 | * Functions declaration |
| 152 | */ |
| 153 | |
| 154 | static int lm87_attach_adapter(struct i2c_adapter *adapter); |
| 155 | static int lm87_detect(struct i2c_adapter *adapter, int address, int kind); |
| 156 | static void lm87_init_client(struct i2c_client *client); |
| 157 | static int lm87_detach_client(struct i2c_client *client); |
| 158 | static struct lm87_data *lm87_update_device(struct device *dev); |
| 159 | |
| 160 | /* |
| 161 | * Driver data (common to all clients) |
| 162 | */ |
| 163 | |
| 164 | static struct i2c_driver lm87_driver = { |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 165 | .driver = { |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 166 | .name = "lm87", |
| 167 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | .id = I2C_DRIVERID_LM87, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | .attach_adapter = lm87_attach_adapter, |
| 170 | .detach_client = lm87_detach_client, |
| 171 | }; |
| 172 | |
| 173 | /* |
| 174 | * Client data (each client gets its own) |
| 175 | */ |
| 176 | |
| 177 | struct lm87_data { |
| 178 | struct i2c_client client; |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 179 | struct class_device *class_dev; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 180 | struct mutex update_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | char valid; /* zero until following fields are valid */ |
| 182 | unsigned long last_updated; /* In jiffies */ |
| 183 | |
| 184 | u8 channel; /* register value */ |
| 185 | |
| 186 | u8 in[8]; /* register value */ |
| 187 | u8 in_max[8]; /* register value */ |
| 188 | u8 in_min[8]; /* register value */ |
| 189 | u16 in_scale[8]; |
| 190 | |
| 191 | s8 temp[3]; /* register value */ |
| 192 | s8 temp_high[3]; /* register value */ |
| 193 | s8 temp_low[3]; /* register value */ |
| 194 | s8 temp_crit_int; /* min of two register values */ |
| 195 | s8 temp_crit_ext; /* min of two register values */ |
| 196 | |
| 197 | u8 fan[2]; /* register value */ |
| 198 | u8 fan_min[2]; /* register value */ |
| 199 | u8 fan_div[2]; /* register value, shifted right */ |
| 200 | u8 aout; /* register value */ |
| 201 | |
| 202 | u16 alarms; /* register values, combined */ |
| 203 | u8 vid; /* register values, combined */ |
| 204 | u8 vrm; |
| 205 | }; |
| 206 | |
| 207 | /* |
| 208 | * Sysfs stuff |
| 209 | */ |
| 210 | |
| 211 | static inline int lm87_read_value(struct i2c_client *client, u8 reg) |
| 212 | { |
| 213 | return i2c_smbus_read_byte_data(client, reg); |
| 214 | } |
| 215 | |
| 216 | static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) |
| 217 | { |
| 218 | return i2c_smbus_write_byte_data(client, reg, value); |
| 219 | } |
| 220 | |
| 221 | #define show_in(offset) \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 222 | static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | { \ |
| 224 | struct lm87_data *data = lm87_update_device(dev); \ |
| 225 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \ |
| 226 | data->in_scale[offset])); \ |
| 227 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 228 | static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | { \ |
| 230 | struct lm87_data *data = lm87_update_device(dev); \ |
| 231 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \ |
| 232 | data->in_scale[offset])); \ |
| 233 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 234 | static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | { \ |
| 236 | struct lm87_data *data = lm87_update_device(dev); \ |
| 237 | return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \ |
| 238 | data->in_scale[offset])); \ |
| 239 | } \ |
| 240 | static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
| 241 | show_in##offset##_input, NULL); |
| 242 | show_in(0); |
| 243 | show_in(1); |
| 244 | show_in(2); |
| 245 | show_in(3); |
| 246 | show_in(4); |
| 247 | show_in(5); |
| 248 | show_in(6); |
| 249 | show_in(7); |
| 250 | |
| 251 | static void set_in_min(struct device *dev, const char *buf, int nr) |
| 252 | { |
| 253 | struct i2c_client *client = to_i2c_client(dev); |
| 254 | struct lm87_data *data = i2c_get_clientdata(client); |
| 255 | long val = simple_strtol(buf, NULL, 10); |
| 256 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 257 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); |
| 259 | lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) : |
| 260 | LM87_REG_AIN_MIN(nr-6), data->in_min[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 261 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | } |
| 263 | |
| 264 | static void set_in_max(struct device *dev, const char *buf, int nr) |
| 265 | { |
| 266 | struct i2c_client *client = to_i2c_client(dev); |
| 267 | struct lm87_data *data = i2c_get_clientdata(client); |
| 268 | long val = simple_strtol(buf, NULL, 10); |
| 269 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 270 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); |
| 272 | lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) : |
| 273 | LM87_REG_AIN_MAX(nr-6), data->in_max[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 274 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | } |
| 276 | |
| 277 | #define set_in(offset) \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 278 | static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | const char *buf, size_t count) \ |
| 280 | { \ |
| 281 | set_in_min(dev, buf, offset); \ |
| 282 | return count; \ |
| 283 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 284 | static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | const char *buf, size_t count) \ |
| 286 | { \ |
| 287 | set_in_max(dev, buf, offset); \ |
| 288 | return count; \ |
| 289 | } \ |
| 290 | static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
| 291 | show_in##offset##_min, set_in##offset##_min); \ |
| 292 | static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
| 293 | show_in##offset##_max, set_in##offset##_max); |
| 294 | set_in(0); |
| 295 | set_in(1); |
| 296 | set_in(2); |
| 297 | set_in(3); |
| 298 | set_in(4); |
| 299 | set_in(5); |
| 300 | set_in(6); |
| 301 | set_in(7); |
| 302 | |
| 303 | #define show_temp(offset) \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 304 | static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | { \ |
| 306 | struct lm87_data *data = lm87_update_device(dev); \ |
| 307 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \ |
| 308 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 309 | static ssize_t show_temp##offset##_low(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | { \ |
| 311 | struct lm87_data *data = lm87_update_device(dev); \ |
| 312 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[offset-1])); \ |
| 313 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 314 | static ssize_t show_temp##offset##_high(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | { \ |
| 316 | struct lm87_data *data = lm87_update_device(dev); \ |
| 317 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[offset-1])); \ |
| 318 | }\ |
| 319 | static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
| 320 | show_temp##offset##_input, NULL); |
| 321 | show_temp(1); |
| 322 | show_temp(2); |
| 323 | show_temp(3); |
| 324 | |
| 325 | static void set_temp_low(struct device *dev, const char *buf, int nr) |
| 326 | { |
| 327 | struct i2c_client *client = to_i2c_client(dev); |
| 328 | struct lm87_data *data = i2c_get_clientdata(client); |
| 329 | long val = simple_strtol(buf, NULL, 10); |
| 330 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 331 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | data->temp_low[nr] = TEMP_TO_REG(val); |
| 333 | lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 334 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | } |
| 336 | |
| 337 | static void set_temp_high(struct device *dev, const char *buf, int nr) |
| 338 | { |
| 339 | struct i2c_client *client = to_i2c_client(dev); |
| 340 | struct lm87_data *data = i2c_get_clientdata(client); |
| 341 | long val = simple_strtol(buf, NULL, 10); |
| 342 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 343 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | data->temp_high[nr] = TEMP_TO_REG(val); |
| 345 | lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 346 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | #define set_temp(offset) \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 350 | static ssize_t set_temp##offset##_low(struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | const char *buf, size_t count) \ |
| 352 | { \ |
| 353 | set_temp_low(dev, buf, offset-1); \ |
| 354 | return count; \ |
| 355 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 356 | static ssize_t set_temp##offset##_high(struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | const char *buf, size_t count) \ |
| 358 | { \ |
| 359 | set_temp_high(dev, buf, offset-1); \ |
| 360 | return count; \ |
| 361 | } \ |
| 362 | static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ |
| 363 | show_temp##offset##_high, set_temp##offset##_high); \ |
| 364 | static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ |
| 365 | show_temp##offset##_low, set_temp##offset##_low); |
| 366 | set_temp(1); |
| 367 | set_temp(2); |
| 368 | set_temp(3); |
| 369 | |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 370 | static ssize_t show_temp_crit_int(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | { |
| 372 | struct lm87_data *data = lm87_update_device(dev); |
| 373 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); |
| 374 | } |
| 375 | |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 376 | static ssize_t show_temp_crit_ext(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | { |
| 378 | struct lm87_data *data = lm87_update_device(dev); |
| 379 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); |
| 380 | } |
| 381 | |
| 382 | static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); |
| 383 | static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); |
| 384 | static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); |
| 385 | |
| 386 | #define show_fan(offset) \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 387 | static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | { \ |
| 389 | struct lm87_data *data = lm87_update_device(dev); \ |
| 390 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset-1], \ |
| 391 | FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ |
| 392 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 393 | static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | { \ |
| 395 | struct lm87_data *data = lm87_update_device(dev); \ |
| 396 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset-1], \ |
| 397 | FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ |
| 398 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 399 | static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | { \ |
| 401 | struct lm87_data *data = lm87_update_device(dev); \ |
| 402 | return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[offset-1])); \ |
| 403 | } \ |
| 404 | static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
| 405 | show_fan##offset##_input, NULL); |
| 406 | show_fan(1); |
| 407 | show_fan(2); |
| 408 | |
| 409 | static void set_fan_min(struct device *dev, const char *buf, int nr) |
| 410 | { |
| 411 | struct i2c_client *client = to_i2c_client(dev); |
| 412 | struct lm87_data *data = i2c_get_clientdata(client); |
| 413 | long val = simple_strtol(buf, NULL, 10); |
| 414 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 415 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | data->fan_min[nr] = FAN_TO_REG(val, |
| 417 | FAN_DIV_FROM_REG(data->fan_div[nr])); |
| 418 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 419 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | } |
| 421 | |
| 422 | /* Note: we save and restore the fan minimum here, because its value is |
| 423 | determined in part by the fan clock divider. This follows the principle |
| 424 | of least suprise; the user doesn't expect the fan minimum to change just |
| 425 | because the divider changed. */ |
| 426 | static ssize_t set_fan_div(struct device *dev, const char *buf, |
| 427 | size_t count, int nr) |
| 428 | { |
| 429 | struct i2c_client *client = to_i2c_client(dev); |
| 430 | struct lm87_data *data = i2c_get_clientdata(client); |
| 431 | long val = simple_strtol(buf, NULL, 10); |
| 432 | unsigned long min; |
| 433 | u8 reg; |
| 434 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 435 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | min = FAN_FROM_REG(data->fan_min[nr], |
| 437 | FAN_DIV_FROM_REG(data->fan_div[nr])); |
| 438 | |
| 439 | switch (val) { |
| 440 | case 1: data->fan_div[nr] = 0; break; |
| 441 | case 2: data->fan_div[nr] = 1; break; |
| 442 | case 4: data->fan_div[nr] = 2; break; |
| 443 | case 8: data->fan_div[nr] = 3; break; |
| 444 | default: |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 445 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | return -EINVAL; |
| 447 | } |
| 448 | |
| 449 | reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); |
| 450 | switch (nr) { |
| 451 | case 0: |
| 452 | reg = (reg & 0xCF) | (data->fan_div[0] << 4); |
| 453 | break; |
| 454 | case 1: |
| 455 | reg = (reg & 0x3F) | (data->fan_div[1] << 6); |
| 456 | break; |
| 457 | } |
| 458 | lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); |
| 459 | |
| 460 | data->fan_min[nr] = FAN_TO_REG(min, val); |
| 461 | lm87_write_value(client, LM87_REG_FAN_MIN(nr), |
| 462 | data->fan_min[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 463 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | |
| 465 | return count; |
| 466 | } |
| 467 | |
| 468 | #define set_fan(offset) \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 469 | static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | size_t count) \ |
| 471 | { \ |
| 472 | set_fan_min(dev, buf, offset-1); \ |
| 473 | return count; \ |
| 474 | } \ |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 475 | static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | size_t count) \ |
| 477 | { \ |
| 478 | return set_fan_div(dev, buf, count, offset-1); \ |
| 479 | } \ |
| 480 | static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ |
| 481 | show_fan##offset##_min, set_fan##offset##_min); \ |
| 482 | static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ |
| 483 | show_fan##offset##_div, set_fan##offset##_div); |
| 484 | set_fan(1); |
| 485 | set_fan(2); |
| 486 | |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 487 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | { |
| 489 | struct lm87_data *data = lm87_update_device(dev); |
| 490 | return sprintf(buf, "%d\n", data->alarms); |
| 491 | } |
| 492 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
| 493 | |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 494 | static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | { |
| 496 | struct lm87_data *data = lm87_update_device(dev); |
| 497 | return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); |
| 498 | } |
| 499 | static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); |
| 500 | |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 501 | static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | { |
| 503 | struct lm87_data *data = lm87_update_device(dev); |
| 504 | return sprintf(buf, "%d\n", data->vrm); |
| 505 | } |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 506 | static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | { |
| 508 | struct i2c_client *client = to_i2c_client(dev); |
| 509 | struct lm87_data *data = i2c_get_clientdata(client); |
| 510 | data->vrm = simple_strtoul(buf, NULL, 10); |
| 511 | return count; |
| 512 | } |
| 513 | static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); |
| 514 | |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 515 | static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | { |
| 517 | struct lm87_data *data = lm87_update_device(dev); |
| 518 | return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); |
| 519 | } |
Yani Ioannou | 8627f9b | 2005-05-17 06:42:03 -0400 | [diff] [blame] | 520 | static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | { |
| 522 | struct i2c_client *client = to_i2c_client(dev); |
| 523 | struct lm87_data *data = i2c_get_clientdata(client); |
| 524 | long val = simple_strtol(buf, NULL, 10); |
| 525 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 526 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | data->aout = AOUT_TO_REG(val); |
| 528 | lm87_write_value(client, LM87_REG_AOUT, data->aout); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 529 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | return count; |
| 531 | } |
| 532 | static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); |
| 533 | |
| 534 | /* |
| 535 | * Real code |
| 536 | */ |
| 537 | |
| 538 | static int lm87_attach_adapter(struct i2c_adapter *adapter) |
| 539 | { |
| 540 | if (!(adapter->class & I2C_CLASS_HWMON)) |
| 541 | return 0; |
Jean Delvare | 2ed2dc3 | 2005-07-31 21:42:02 +0200 | [diff] [blame] | 542 | return i2c_probe(adapter, &addr_data, lm87_detect); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | } |
| 544 | |
| 545 | /* |
| 546 | * The following function does more than just detection. If detection |
| 547 | * succeeds, it also registers the new chip. |
| 548 | */ |
| 549 | static int lm87_detect(struct i2c_adapter *adapter, int address, int kind) |
| 550 | { |
| 551 | struct i2c_client *new_client; |
| 552 | struct lm87_data *data; |
| 553 | int err = 0; |
| 554 | |
| 555 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) |
| 556 | goto exit; |
| 557 | |
Deepak Saxena | ba9c2e8 | 2005-10-17 23:08:32 +0200 | [diff] [blame] | 558 | if (!(data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | err = -ENOMEM; |
| 560 | goto exit; |
| 561 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
| 563 | /* The common I2C client data is placed right before the |
| 564 | LM87-specific data. */ |
| 565 | new_client = &data->client; |
| 566 | i2c_set_clientdata(new_client, data); |
| 567 | new_client->addr = address; |
| 568 | new_client->adapter = adapter; |
| 569 | new_client->driver = &lm87_driver; |
| 570 | new_client->flags = 0; |
| 571 | |
| 572 | /* Default to an LM87 if forced */ |
| 573 | if (kind == 0) |
| 574 | kind = lm87; |
| 575 | |
| 576 | /* Now, we do the remaining detection. */ |
| 577 | if (kind < 0) { |
| 578 | u8 rev = lm87_read_value(new_client, LM87_REG_REVISION); |
| 579 | |
| 580 | if (rev < 0x01 || rev > 0x08 |
| 581 | || (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80) |
| 582 | || lm87_read_value(new_client, LM87_REG_COMPANY_ID) != 0x02) { |
| 583 | dev_dbg(&adapter->dev, |
| 584 | "LM87 detection failed at 0x%02x.\n", |
| 585 | address); |
| 586 | goto exit_free; |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | /* We can fill in the remaining client fields */ |
| 591 | strlcpy(new_client->name, "lm87", I2C_NAME_SIZE); |
| 592 | data->valid = 0; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 593 | mutex_init(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | |
| 595 | /* Tell the I2C layer a new client has arrived */ |
| 596 | if ((err = i2c_attach_client(new_client))) |
| 597 | goto exit_free; |
| 598 | |
| 599 | /* Initialize the LM87 chip */ |
| 600 | lm87_init_client(new_client); |
| 601 | |
| 602 | data->in_scale[0] = 2500; |
| 603 | data->in_scale[1] = 2700; |
| 604 | data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; |
| 605 | data->in_scale[3] = 5000; |
| 606 | data->in_scale[4] = 12000; |
| 607 | data->in_scale[5] = 2700; |
| 608 | data->in_scale[6] = 1875; |
| 609 | data->in_scale[7] = 1875; |
| 610 | |
| 611 | /* Register sysfs hooks */ |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 612 | data->class_dev = hwmon_device_register(&new_client->dev); |
| 613 | if (IS_ERR(data->class_dev)) { |
| 614 | err = PTR_ERR(data->class_dev); |
| 615 | goto exit_detach; |
| 616 | } |
| 617 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | device_create_file(&new_client->dev, &dev_attr_in1_input); |
| 619 | device_create_file(&new_client->dev, &dev_attr_in1_min); |
| 620 | device_create_file(&new_client->dev, &dev_attr_in1_max); |
| 621 | device_create_file(&new_client->dev, &dev_attr_in2_input); |
| 622 | device_create_file(&new_client->dev, &dev_attr_in2_min); |
| 623 | device_create_file(&new_client->dev, &dev_attr_in2_max); |
| 624 | device_create_file(&new_client->dev, &dev_attr_in3_input); |
| 625 | device_create_file(&new_client->dev, &dev_attr_in3_min); |
| 626 | device_create_file(&new_client->dev, &dev_attr_in3_max); |
| 627 | device_create_file(&new_client->dev, &dev_attr_in4_input); |
| 628 | device_create_file(&new_client->dev, &dev_attr_in4_min); |
| 629 | device_create_file(&new_client->dev, &dev_attr_in4_max); |
| 630 | |
| 631 | if (data->channel & CHAN_NO_FAN(0)) { |
| 632 | device_create_file(&new_client->dev, &dev_attr_in6_input); |
| 633 | device_create_file(&new_client->dev, &dev_attr_in6_min); |
| 634 | device_create_file(&new_client->dev, &dev_attr_in6_max); |
| 635 | } else { |
| 636 | device_create_file(&new_client->dev, &dev_attr_fan1_input); |
| 637 | device_create_file(&new_client->dev, &dev_attr_fan1_min); |
| 638 | device_create_file(&new_client->dev, &dev_attr_fan1_div); |
| 639 | } |
| 640 | if (data->channel & CHAN_NO_FAN(1)) { |
| 641 | device_create_file(&new_client->dev, &dev_attr_in7_input); |
| 642 | device_create_file(&new_client->dev, &dev_attr_in7_min); |
| 643 | device_create_file(&new_client->dev, &dev_attr_in7_max); |
| 644 | } else { |
| 645 | device_create_file(&new_client->dev, &dev_attr_fan2_input); |
| 646 | device_create_file(&new_client->dev, &dev_attr_fan2_min); |
| 647 | device_create_file(&new_client->dev, &dev_attr_fan2_div); |
| 648 | } |
| 649 | |
| 650 | device_create_file(&new_client->dev, &dev_attr_temp1_input); |
| 651 | device_create_file(&new_client->dev, &dev_attr_temp1_max); |
| 652 | device_create_file(&new_client->dev, &dev_attr_temp1_min); |
| 653 | device_create_file(&new_client->dev, &dev_attr_temp1_crit); |
| 654 | device_create_file(&new_client->dev, &dev_attr_temp2_input); |
| 655 | device_create_file(&new_client->dev, &dev_attr_temp2_max); |
| 656 | device_create_file(&new_client->dev, &dev_attr_temp2_min); |
| 657 | device_create_file(&new_client->dev, &dev_attr_temp2_crit); |
| 658 | |
| 659 | if (data->channel & CHAN_TEMP3) { |
| 660 | device_create_file(&new_client->dev, &dev_attr_temp3_input); |
| 661 | device_create_file(&new_client->dev, &dev_attr_temp3_max); |
| 662 | device_create_file(&new_client->dev, &dev_attr_temp3_min); |
| 663 | device_create_file(&new_client->dev, &dev_attr_temp3_crit); |
| 664 | } else { |
| 665 | device_create_file(&new_client->dev, &dev_attr_in0_input); |
| 666 | device_create_file(&new_client->dev, &dev_attr_in0_min); |
| 667 | device_create_file(&new_client->dev, &dev_attr_in0_max); |
| 668 | device_create_file(&new_client->dev, &dev_attr_in5_input); |
| 669 | device_create_file(&new_client->dev, &dev_attr_in5_min); |
| 670 | device_create_file(&new_client->dev, &dev_attr_in5_max); |
| 671 | } |
| 672 | |
| 673 | if (!(data->channel & CHAN_NO_VID)) { |
| 674 | device_create_file(&new_client->dev, &dev_attr_cpu0_vid); |
| 675 | device_create_file(&new_client->dev, &dev_attr_vrm); |
| 676 | } |
| 677 | |
| 678 | device_create_file(&new_client->dev, &dev_attr_alarms); |
| 679 | device_create_file(&new_client->dev, &dev_attr_aout_output); |
| 680 | |
| 681 | return 0; |
| 682 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 683 | exit_detach: |
| 684 | i2c_detach_client(new_client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | exit_free: |
| 686 | kfree(data); |
| 687 | exit: |
| 688 | return err; |
| 689 | } |
| 690 | |
| 691 | static void lm87_init_client(struct i2c_client *client) |
| 692 | { |
| 693 | struct lm87_data *data = i2c_get_clientdata(client); |
| 694 | u8 config; |
| 695 | |
| 696 | data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); |
Jean Delvare | 303760b | 2005-07-31 21:52:01 +0200 | [diff] [blame] | 697 | data->vrm = vid_which_vrm(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
| 699 | config = lm87_read_value(client, LM87_REG_CONFIG); |
| 700 | if (!(config & 0x01)) { |
| 701 | int i; |
| 702 | |
| 703 | /* Limits are left uninitialized after power-up */ |
| 704 | for (i = 1; i < 6; i++) { |
| 705 | lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); |
| 706 | lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); |
| 707 | } |
| 708 | for (i = 0; i < 2; i++) { |
| 709 | lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); |
| 710 | lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); |
| 711 | lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); |
| 712 | lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); |
| 713 | } |
| 714 | if (data->channel & CHAN_TEMP3) { |
| 715 | lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); |
| 716 | lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); |
| 717 | } else { |
| 718 | lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); |
| 719 | lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); |
| 720 | } |
| 721 | } |
| 722 | if ((config & 0x81) != 0x01) { |
| 723 | /* Start monitoring */ |
| 724 | lm87_write_value(client, LM87_REG_CONFIG, |
| 725 | (config & 0xF7) | 0x01); |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | static int lm87_detach_client(struct i2c_client *client) |
| 730 | { |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 731 | struct lm87_data *data = i2c_get_clientdata(client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | int err; |
| 733 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 734 | hwmon_device_unregister(data->class_dev); |
| 735 | |
Jean Delvare | 7bef559 | 2005-07-27 22:14:49 +0200 | [diff] [blame] | 736 | if ((err = i2c_detach_client(client))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 739 | kfree(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | return 0; |
| 741 | } |
| 742 | |
| 743 | static struct lm87_data *lm87_update_device(struct device *dev) |
| 744 | { |
| 745 | struct i2c_client *client = to_i2c_client(dev); |
| 746 | struct lm87_data *data = i2c_get_clientdata(client); |
| 747 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 748 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | |
| 750 | if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { |
| 751 | int i, j; |
| 752 | |
| 753 | dev_dbg(&client->dev, "Updating data.\n"); |
| 754 | |
| 755 | i = (data->channel & CHAN_TEMP3) ? 1 : 0; |
| 756 | j = (data->channel & CHAN_TEMP3) ? 5 : 6; |
| 757 | for (; i < j; i++) { |
| 758 | data->in[i] = lm87_read_value(client, |
| 759 | LM87_REG_IN(i)); |
| 760 | data->in_min[i] = lm87_read_value(client, |
| 761 | LM87_REG_IN_MIN(i)); |
| 762 | data->in_max[i] = lm87_read_value(client, |
| 763 | LM87_REG_IN_MAX(i)); |
| 764 | } |
| 765 | |
| 766 | for (i = 0; i < 2; i++) { |
| 767 | if (data->channel & CHAN_NO_FAN(i)) { |
| 768 | data->in[6+i] = lm87_read_value(client, |
| 769 | LM87_REG_AIN(i)); |
| 770 | data->in_max[6+i] = lm87_read_value(client, |
| 771 | LM87_REG_AIN_MAX(i)); |
| 772 | data->in_min[6+i] = lm87_read_value(client, |
| 773 | LM87_REG_AIN_MIN(i)); |
| 774 | |
| 775 | } else { |
| 776 | data->fan[i] = lm87_read_value(client, |
| 777 | LM87_REG_FAN(i)); |
| 778 | data->fan_min[i] = lm87_read_value(client, |
| 779 | LM87_REG_FAN_MIN(i)); |
| 780 | } |
| 781 | } |
| 782 | |
| 783 | j = (data->channel & CHAN_TEMP3) ? 3 : 2; |
| 784 | for (i = 0 ; i < j; i++) { |
| 785 | data->temp[i] = lm87_read_value(client, |
| 786 | LM87_REG_TEMP[i]); |
| 787 | data->temp_high[i] = lm87_read_value(client, |
| 788 | LM87_REG_TEMP_HIGH[i]); |
| 789 | data->temp_low[i] = lm87_read_value(client, |
| 790 | LM87_REG_TEMP_LOW[i]); |
| 791 | } |
| 792 | |
| 793 | i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); |
| 794 | j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); |
| 795 | data->temp_crit_int = min(i, j); |
| 796 | |
| 797 | i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); |
| 798 | j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); |
| 799 | data->temp_crit_ext = min(i, j); |
| 800 | |
| 801 | i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); |
| 802 | data->fan_div[0] = (i >> 4) & 0x03; |
| 803 | data->fan_div[1] = (i >> 6) & 0x03; |
| 804 | data->vid = (i & 0x0F) |
| 805 | | (lm87_read_value(client, LM87_REG_VID4) & 0x01) |
| 806 | << 4; |
| 807 | |
| 808 | data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) |
| 809 | | (lm87_read_value(client, LM87_REG_ALARMS2) |
| 810 | << 8); |
| 811 | data->aout = lm87_read_value(client, LM87_REG_AOUT); |
| 812 | |
| 813 | data->last_updated = jiffies; |
| 814 | data->valid = 1; |
| 815 | } |
| 816 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 817 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | |
| 819 | return data; |
| 820 | } |
| 821 | |
| 822 | static int __init sensors_lm87_init(void) |
| 823 | { |
| 824 | return i2c_add_driver(&lm87_driver); |
| 825 | } |
| 826 | |
| 827 | static void __exit sensors_lm87_exit(void) |
| 828 | { |
| 829 | i2c_del_driver(&lm87_driver); |
| 830 | } |
| 831 | |
| 832 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others"); |
| 833 | MODULE_DESCRIPTION("LM87 driver"); |
| 834 | MODULE_LICENSE("GPL"); |
| 835 | |
| 836 | module_init(sensors_lm87_init); |
| 837 | module_exit(sensors_lm87_exit); |