Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 1 | /* |
| 2 | w83627ehf - Driver for the hardware monitoring functionality of |
| 3 | the Winbond W83627EHF Super-I/O chip |
| 4 | Copyright (C) 2005 Jean Delvare <khali@linux-fr.org> |
| 5 | |
| 6 | Shamelessly ripped from the w83627hf driver |
| 7 | Copyright (C) 2003 Mark Studebaker |
| 8 | |
| 9 | Thanks to Leon Moonen, Steve Cliffe and Grant Coady for their help |
| 10 | in testing and debugging this driver. |
| 11 | |
Jean Delvare | 8dd2d2c | 2005-07-27 21:33:15 +0200 | [diff] [blame] | 12 | This driver also supports the W83627EHG, which is the lead-free |
| 13 | version of the W83627EHF. |
| 14 | |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 15 | This program is free software; you can redistribute it and/or modify |
| 16 | it under the terms of the GNU General Public License as published by |
| 17 | the Free Software Foundation; either version 2 of the License, or |
| 18 | (at your option) any later version. |
| 19 | |
| 20 | This program is distributed in the hope that it will be useful, |
| 21 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | GNU General Public License for more details. |
| 24 | |
| 25 | You should have received a copy of the GNU General Public License |
| 26 | along with this program; if not, write to the Free Software |
| 27 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 28 | |
| 29 | |
| 30 | Supports the following chips: |
| 31 | |
| 32 | Chip #vin #fan #pwm #temp chip_id man_id |
| 33 | w83627ehf - 5 - 3 0x88 0x5ca3 |
| 34 | |
| 35 | This is a preliminary version of the driver, only supporting the |
| 36 | fan and temperature inputs. The chip does much more than that. |
| 37 | */ |
| 38 | |
| 39 | #include <linux/module.h> |
| 40 | #include <linux/init.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/i2c.h> |
Jean Delvare | fde0950 | 2005-07-19 23:51:07 +0200 | [diff] [blame] | 43 | #include <linux/i2c-isa.h> |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 44 | #include <linux/hwmon.h> |
| 45 | #include <linux/err.h> |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 46 | #include <linux/mutex.h> |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 47 | #include <asm/io.h> |
| 48 | #include "lm75.h" |
| 49 | |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 50 | /* The actual ISA address is read from Super-I/O configuration space */ |
| 51 | static unsigned short address; |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 52 | |
| 53 | /* |
| 54 | * Super-I/O constants and functions |
| 55 | */ |
| 56 | |
| 57 | static int REG; /* The register to read/write */ |
| 58 | static int VAL; /* The value to read/write */ |
| 59 | |
| 60 | #define W83627EHF_LD_HWM 0x0b |
| 61 | |
| 62 | #define SIO_REG_LDSEL 0x07 /* Logical device select */ |
| 63 | #define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */ |
| 64 | #define SIO_REG_ENABLE 0x30 /* Logical device enable */ |
| 65 | #define SIO_REG_ADDR 0x60 /* Logical device address (2 bytes) */ |
| 66 | |
| 67 | #define SIO_W83627EHF_ID 0x8840 |
| 68 | #define SIO_ID_MASK 0xFFC0 |
| 69 | |
| 70 | static inline void |
| 71 | superio_outb(int reg, int val) |
| 72 | { |
| 73 | outb(reg, REG); |
| 74 | outb(val, VAL); |
| 75 | } |
| 76 | |
| 77 | static inline int |
| 78 | superio_inb(int reg) |
| 79 | { |
| 80 | outb(reg, REG); |
| 81 | return inb(VAL); |
| 82 | } |
| 83 | |
| 84 | static inline void |
| 85 | superio_select(int ld) |
| 86 | { |
| 87 | outb(SIO_REG_LDSEL, REG); |
| 88 | outb(ld, VAL); |
| 89 | } |
| 90 | |
| 91 | static inline void |
| 92 | superio_enter(void) |
| 93 | { |
| 94 | outb(0x87, REG); |
| 95 | outb(0x87, REG); |
| 96 | } |
| 97 | |
| 98 | static inline void |
| 99 | superio_exit(void) |
| 100 | { |
| 101 | outb(0x02, REG); |
| 102 | outb(0x02, VAL); |
| 103 | } |
| 104 | |
| 105 | /* |
| 106 | * ISA constants |
| 107 | */ |
| 108 | |
Petr Vandrovec | ada0c2f | 2005-10-07 23:11:03 +0200 | [diff] [blame] | 109 | #define REGION_ALIGNMENT ~7 |
| 110 | #define REGION_OFFSET 5 |
| 111 | #define REGION_LENGTH 2 |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 112 | #define ADDR_REG_OFFSET 5 |
| 113 | #define DATA_REG_OFFSET 6 |
| 114 | |
| 115 | #define W83627EHF_REG_BANK 0x4E |
| 116 | #define W83627EHF_REG_CONFIG 0x40 |
| 117 | #define W83627EHF_REG_CHIP_ID 0x49 |
| 118 | #define W83627EHF_REG_MAN_ID 0x4F |
| 119 | |
| 120 | static const u16 W83627EHF_REG_FAN[] = { 0x28, 0x29, 0x2a, 0x3f, 0x553 }; |
| 121 | static const u16 W83627EHF_REG_FAN_MIN[] = { 0x3b, 0x3c, 0x3d, 0x3e, 0x55c }; |
| 122 | |
| 123 | #define W83627EHF_REG_TEMP1 0x27 |
| 124 | #define W83627EHF_REG_TEMP1_HYST 0x3a |
| 125 | #define W83627EHF_REG_TEMP1_OVER 0x39 |
| 126 | static const u16 W83627EHF_REG_TEMP[] = { 0x150, 0x250 }; |
| 127 | static const u16 W83627EHF_REG_TEMP_HYST[] = { 0x153, 0x253 }; |
| 128 | static const u16 W83627EHF_REG_TEMP_OVER[] = { 0x155, 0x255 }; |
| 129 | static const u16 W83627EHF_REG_TEMP_CONFIG[] = { 0x152, 0x252 }; |
| 130 | |
| 131 | /* Fan clock dividers are spread over the following five registers */ |
| 132 | #define W83627EHF_REG_FANDIV1 0x47 |
| 133 | #define W83627EHF_REG_FANDIV2 0x4B |
| 134 | #define W83627EHF_REG_VBAT 0x5D |
| 135 | #define W83627EHF_REG_DIODE 0x59 |
| 136 | #define W83627EHF_REG_SMI_OVT 0x4C |
| 137 | |
| 138 | /* |
| 139 | * Conversions |
| 140 | */ |
| 141 | |
| 142 | static inline unsigned int |
| 143 | fan_from_reg(u8 reg, unsigned int div) |
| 144 | { |
| 145 | if (reg == 0 || reg == 255) |
| 146 | return 0; |
| 147 | return 1350000U / (reg * div); |
| 148 | } |
| 149 | |
| 150 | static inline unsigned int |
| 151 | div_from_reg(u8 reg) |
| 152 | { |
| 153 | return 1 << reg; |
| 154 | } |
| 155 | |
| 156 | static inline int |
| 157 | temp1_from_reg(s8 reg) |
| 158 | { |
| 159 | return reg * 1000; |
| 160 | } |
| 161 | |
| 162 | static inline s8 |
| 163 | temp1_to_reg(int temp) |
| 164 | { |
| 165 | if (temp <= -128000) |
| 166 | return -128; |
| 167 | if (temp >= 127000) |
| 168 | return 127; |
| 169 | if (temp < 0) |
| 170 | return (temp - 500) / 1000; |
| 171 | return (temp + 500) / 1000; |
| 172 | } |
| 173 | |
| 174 | /* |
| 175 | * Data structures and manipulation thereof |
| 176 | */ |
| 177 | |
| 178 | struct w83627ehf_data { |
| 179 | struct i2c_client client; |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 180 | struct class_device *class_dev; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 181 | struct mutex lock; |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 182 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 183 | struct mutex update_lock; |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 184 | char valid; /* !=0 if following fields are valid */ |
| 185 | unsigned long last_updated; /* In jiffies */ |
| 186 | |
| 187 | /* Register values */ |
| 188 | u8 fan[5]; |
| 189 | u8 fan_min[5]; |
| 190 | u8 fan_div[5]; |
| 191 | u8 has_fan; /* some fan inputs can be disabled */ |
| 192 | s8 temp1; |
| 193 | s8 temp1_max; |
| 194 | s8 temp1_max_hyst; |
| 195 | s16 temp[2]; |
| 196 | s16 temp_max[2]; |
| 197 | s16 temp_max_hyst[2]; |
| 198 | }; |
| 199 | |
| 200 | static inline int is_word_sized(u16 reg) |
| 201 | { |
| 202 | return (((reg & 0xff00) == 0x100 |
| 203 | || (reg & 0xff00) == 0x200) |
| 204 | && ((reg & 0x00ff) == 0x50 |
| 205 | || (reg & 0x00ff) == 0x53 |
| 206 | || (reg & 0x00ff) == 0x55)); |
| 207 | } |
| 208 | |
| 209 | /* We assume that the default bank is 0, thus the following two functions do |
| 210 | nothing for registers which live in bank 0. For others, they respectively |
| 211 | set the bank register to the correct value (before the register is |
| 212 | accessed), and back to 0 (afterwards). */ |
| 213 | static inline void w83627ehf_set_bank(struct i2c_client *client, u16 reg) |
| 214 | { |
| 215 | if (reg & 0xff00) { |
| 216 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); |
| 217 | outb_p(reg >> 8, client->addr + DATA_REG_OFFSET); |
| 218 | } |
| 219 | } |
| 220 | |
| 221 | static inline void w83627ehf_reset_bank(struct i2c_client *client, u16 reg) |
| 222 | { |
| 223 | if (reg & 0xff00) { |
| 224 | outb_p(W83627EHF_REG_BANK, client->addr + ADDR_REG_OFFSET); |
| 225 | outb_p(0, client->addr + DATA_REG_OFFSET); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | static u16 w83627ehf_read_value(struct i2c_client *client, u16 reg) |
| 230 | { |
| 231 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
| 232 | int res, word_sized = is_word_sized(reg); |
| 233 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 234 | mutex_lock(&data->lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 235 | |
| 236 | w83627ehf_set_bank(client, reg); |
| 237 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); |
| 238 | res = inb_p(client->addr + DATA_REG_OFFSET); |
| 239 | if (word_sized) { |
| 240 | outb_p((reg & 0xff) + 1, |
| 241 | client->addr + ADDR_REG_OFFSET); |
| 242 | res = (res << 8) + inb_p(client->addr + DATA_REG_OFFSET); |
| 243 | } |
| 244 | w83627ehf_reset_bank(client, reg); |
| 245 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 246 | mutex_unlock(&data->lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 247 | |
| 248 | return res; |
| 249 | } |
| 250 | |
| 251 | static int w83627ehf_write_value(struct i2c_client *client, u16 reg, u16 value) |
| 252 | { |
| 253 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
| 254 | int word_sized = is_word_sized(reg); |
| 255 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 256 | mutex_lock(&data->lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 257 | |
| 258 | w83627ehf_set_bank(client, reg); |
| 259 | outb_p(reg & 0xff, client->addr + ADDR_REG_OFFSET); |
| 260 | if (word_sized) { |
| 261 | outb_p(value >> 8, client->addr + DATA_REG_OFFSET); |
| 262 | outb_p((reg & 0xff) + 1, |
| 263 | client->addr + ADDR_REG_OFFSET); |
| 264 | } |
| 265 | outb_p(value & 0xff, client->addr + DATA_REG_OFFSET); |
| 266 | w83627ehf_reset_bank(client, reg); |
| 267 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 268 | mutex_unlock(&data->lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 269 | return 0; |
| 270 | } |
| 271 | |
| 272 | /* This function assumes that the caller holds data->update_lock */ |
| 273 | static void w83627ehf_write_fan_div(struct i2c_client *client, int nr) |
| 274 | { |
| 275 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
| 276 | u8 reg; |
| 277 | |
| 278 | switch (nr) { |
| 279 | case 0: |
| 280 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0xcf) |
| 281 | | ((data->fan_div[0] & 0x03) << 4); |
| 282 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); |
| 283 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xdf) |
| 284 | | ((data->fan_div[0] & 0x04) << 3); |
| 285 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); |
| 286 | break; |
| 287 | case 1: |
| 288 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV1) & 0x3f) |
| 289 | | ((data->fan_div[1] & 0x03) << 6); |
| 290 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV1, reg); |
| 291 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0xbf) |
| 292 | | ((data->fan_div[1] & 0x04) << 4); |
| 293 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); |
| 294 | break; |
| 295 | case 2: |
| 296 | reg = (w83627ehf_read_value(client, W83627EHF_REG_FANDIV2) & 0x3f) |
| 297 | | ((data->fan_div[2] & 0x03) << 6); |
| 298 | w83627ehf_write_value(client, W83627EHF_REG_FANDIV2, reg); |
| 299 | reg = (w83627ehf_read_value(client, W83627EHF_REG_VBAT) & 0x7f) |
| 300 | | ((data->fan_div[2] & 0x04) << 5); |
| 301 | w83627ehf_write_value(client, W83627EHF_REG_VBAT, reg); |
| 302 | break; |
| 303 | case 3: |
| 304 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0xfc) |
| 305 | | (data->fan_div[3] & 0x03); |
| 306 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); |
| 307 | reg = (w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT) & 0x7f) |
| 308 | | ((data->fan_div[3] & 0x04) << 5); |
| 309 | w83627ehf_write_value(client, W83627EHF_REG_SMI_OVT, reg); |
| 310 | break; |
| 311 | case 4: |
| 312 | reg = (w83627ehf_read_value(client, W83627EHF_REG_DIODE) & 0x73) |
| 313 | | ((data->fan_div[4] & 0x03) << 3) |
| 314 | | ((data->fan_div[4] & 0x04) << 5); |
| 315 | w83627ehf_write_value(client, W83627EHF_REG_DIODE, reg); |
| 316 | break; |
| 317 | } |
| 318 | } |
| 319 | |
| 320 | static struct w83627ehf_data *w83627ehf_update_device(struct device *dev) |
| 321 | { |
| 322 | struct i2c_client *client = to_i2c_client(dev); |
| 323 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
| 324 | int i; |
| 325 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 326 | mutex_lock(&data->update_lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 327 | |
| 328 | if (time_after(jiffies, data->last_updated + HZ) |
| 329 | || !data->valid) { |
| 330 | /* Fan clock dividers */ |
| 331 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); |
| 332 | data->fan_div[0] = (i >> 4) & 0x03; |
| 333 | data->fan_div[1] = (i >> 6) & 0x03; |
| 334 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV2); |
| 335 | data->fan_div[2] = (i >> 6) & 0x03; |
| 336 | i = w83627ehf_read_value(client, W83627EHF_REG_VBAT); |
| 337 | data->fan_div[0] |= (i >> 3) & 0x04; |
| 338 | data->fan_div[1] |= (i >> 4) & 0x04; |
| 339 | data->fan_div[2] |= (i >> 5) & 0x04; |
| 340 | if (data->has_fan & ((1 << 3) | (1 << 4))) { |
| 341 | i = w83627ehf_read_value(client, W83627EHF_REG_DIODE); |
| 342 | data->fan_div[3] = i & 0x03; |
| 343 | data->fan_div[4] = ((i >> 2) & 0x03) |
| 344 | | ((i >> 5) & 0x04); |
| 345 | } |
| 346 | if (data->has_fan & (1 << 3)) { |
| 347 | i = w83627ehf_read_value(client, W83627EHF_REG_SMI_OVT); |
| 348 | data->fan_div[3] |= (i >> 5) & 0x04; |
| 349 | } |
| 350 | |
| 351 | /* Measured fan speeds and limits */ |
| 352 | for (i = 0; i < 5; i++) { |
| 353 | if (!(data->has_fan & (1 << i))) |
| 354 | continue; |
| 355 | |
| 356 | data->fan[i] = w83627ehf_read_value(client, |
| 357 | W83627EHF_REG_FAN[i]); |
| 358 | data->fan_min[i] = w83627ehf_read_value(client, |
| 359 | W83627EHF_REG_FAN_MIN[i]); |
| 360 | |
| 361 | /* If we failed to measure the fan speed and clock |
| 362 | divider can be increased, let's try that for next |
| 363 | time */ |
| 364 | if (data->fan[i] == 0xff |
| 365 | && data->fan_div[i] < 0x07) { |
| 366 | dev_dbg(&client->dev, "Increasing fan %d " |
| 367 | "clock divider from %u to %u\n", |
| 368 | i, div_from_reg(data->fan_div[i]), |
| 369 | div_from_reg(data->fan_div[i] + 1)); |
| 370 | data->fan_div[i]++; |
| 371 | w83627ehf_write_fan_div(client, i); |
| 372 | /* Preserve min limit if possible */ |
| 373 | if (data->fan_min[i] >= 2 |
| 374 | && data->fan_min[i] != 255) |
| 375 | w83627ehf_write_value(client, |
| 376 | W83627EHF_REG_FAN_MIN[i], |
| 377 | (data->fan_min[i] /= 2)); |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | /* Measured temperatures and limits */ |
| 382 | data->temp1 = w83627ehf_read_value(client, |
| 383 | W83627EHF_REG_TEMP1); |
| 384 | data->temp1_max = w83627ehf_read_value(client, |
| 385 | W83627EHF_REG_TEMP1_OVER); |
| 386 | data->temp1_max_hyst = w83627ehf_read_value(client, |
| 387 | W83627EHF_REG_TEMP1_HYST); |
| 388 | for (i = 0; i < 2; i++) { |
| 389 | data->temp[i] = w83627ehf_read_value(client, |
| 390 | W83627EHF_REG_TEMP[i]); |
| 391 | data->temp_max[i] = w83627ehf_read_value(client, |
| 392 | W83627EHF_REG_TEMP_OVER[i]); |
| 393 | data->temp_max_hyst[i] = w83627ehf_read_value(client, |
| 394 | W83627EHF_REG_TEMP_HYST[i]); |
| 395 | } |
| 396 | |
| 397 | data->last_updated = jiffies; |
| 398 | data->valid = 1; |
| 399 | } |
| 400 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 401 | mutex_unlock(&data->update_lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 402 | return data; |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * Sysfs callback functions |
| 407 | */ |
| 408 | |
| 409 | #define show_fan_reg(reg) \ |
| 410 | static ssize_t \ |
| 411 | show_##reg(struct device *dev, char *buf, int nr) \ |
| 412 | { \ |
| 413 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ |
| 414 | return sprintf(buf, "%d\n", \ |
| 415 | fan_from_reg(data->reg[nr], \ |
| 416 | div_from_reg(data->fan_div[nr]))); \ |
| 417 | } |
| 418 | show_fan_reg(fan); |
| 419 | show_fan_reg(fan_min); |
| 420 | |
| 421 | static ssize_t |
| 422 | show_fan_div(struct device *dev, char *buf, int nr) |
| 423 | { |
| 424 | struct w83627ehf_data *data = w83627ehf_update_device(dev); |
| 425 | return sprintf(buf, "%u\n", |
| 426 | div_from_reg(data->fan_div[nr])); |
| 427 | } |
| 428 | |
| 429 | static ssize_t |
| 430 | store_fan_min(struct device *dev, const char *buf, size_t count, int nr) |
| 431 | { |
| 432 | struct i2c_client *client = to_i2c_client(dev); |
| 433 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
| 434 | unsigned int val = simple_strtoul(buf, NULL, 10); |
| 435 | unsigned int reg; |
| 436 | u8 new_div; |
| 437 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 438 | mutex_lock(&data->update_lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 439 | if (!val) { |
| 440 | /* No min limit, alarm disabled */ |
| 441 | data->fan_min[nr] = 255; |
| 442 | new_div = data->fan_div[nr]; /* No change */ |
| 443 | dev_info(dev, "fan%u low limit and alarm disabled\n", nr + 1); |
| 444 | } else if ((reg = 1350000U / val) >= 128 * 255) { |
| 445 | /* Speed below this value cannot possibly be represented, |
| 446 | even with the highest divider (128) */ |
| 447 | data->fan_min[nr] = 254; |
| 448 | new_div = 7; /* 128 == (1 << 7) */ |
| 449 | dev_warn(dev, "fan%u low limit %u below minimum %u, set to " |
| 450 | "minimum\n", nr + 1, val, fan_from_reg(254, 128)); |
| 451 | } else if (!reg) { |
| 452 | /* Speed above this value cannot possibly be represented, |
| 453 | even with the lowest divider (1) */ |
| 454 | data->fan_min[nr] = 1; |
| 455 | new_div = 0; /* 1 == (1 << 0) */ |
| 456 | dev_warn(dev, "fan%u low limit %u above maximum %u, set to " |
Jean Delvare | b9110b1 | 2005-05-02 23:08:22 +0200 | [diff] [blame] | 457 | "maximum\n", nr + 1, val, fan_from_reg(1, 1)); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 458 | } else { |
| 459 | /* Automatically pick the best divider, i.e. the one such |
| 460 | that the min limit will correspond to a register value |
| 461 | in the 96..192 range */ |
| 462 | new_div = 0; |
| 463 | while (reg > 192 && new_div < 7) { |
| 464 | reg >>= 1; |
| 465 | new_div++; |
| 466 | } |
| 467 | data->fan_min[nr] = reg; |
| 468 | } |
| 469 | |
| 470 | /* Write both the fan clock divider (if it changed) and the new |
| 471 | fan min (unconditionally) */ |
| 472 | if (new_div != data->fan_div[nr]) { |
| 473 | if (new_div > data->fan_div[nr]) |
| 474 | data->fan[nr] >>= (data->fan_div[nr] - new_div); |
| 475 | else |
| 476 | data->fan[nr] <<= (new_div - data->fan_div[nr]); |
| 477 | |
| 478 | dev_dbg(dev, "fan%u clock divider changed from %u to %u\n", |
| 479 | nr + 1, div_from_reg(data->fan_div[nr]), |
| 480 | div_from_reg(new_div)); |
| 481 | data->fan_div[nr] = new_div; |
| 482 | w83627ehf_write_fan_div(client, nr); |
| 483 | } |
| 484 | w83627ehf_write_value(client, W83627EHF_REG_FAN_MIN[nr], |
| 485 | data->fan_min[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 486 | mutex_unlock(&data->update_lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 487 | |
| 488 | return count; |
| 489 | } |
| 490 | |
| 491 | #define sysfs_fan_offset(offset) \ |
| 492 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 493 | show_reg_fan_##offset(struct device *dev, struct device_attribute *attr, \ |
| 494 | char *buf) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 495 | { \ |
| 496 | return show_fan(dev, buf, offset-1); \ |
| 497 | } \ |
| 498 | static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
| 499 | show_reg_fan_##offset, NULL); |
| 500 | |
| 501 | #define sysfs_fan_min_offset(offset) \ |
| 502 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 503 | show_reg_fan##offset##_min(struct device *dev, struct device_attribute *attr, \ |
| 504 | char *buf) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 505 | { \ |
| 506 | return show_fan_min(dev, buf, offset-1); \ |
| 507 | } \ |
| 508 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 509 | store_reg_fan##offset##_min(struct device *dev, struct device_attribute *attr, \ |
| 510 | const char *buf, size_t count) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 511 | { \ |
| 512 | return store_fan_min(dev, buf, count, offset-1); \ |
| 513 | } \ |
| 514 | static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ |
| 515 | show_reg_fan##offset##_min, \ |
| 516 | store_reg_fan##offset##_min); |
| 517 | |
| 518 | #define sysfs_fan_div_offset(offset) \ |
| 519 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 520 | show_reg_fan##offset##_div(struct device *dev, struct device_attribute *attr, \ |
| 521 | char *buf) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 522 | { \ |
| 523 | return show_fan_div(dev, buf, offset - 1); \ |
| 524 | } \ |
| 525 | static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \ |
| 526 | show_reg_fan##offset##_div, NULL); |
| 527 | |
| 528 | sysfs_fan_offset(1); |
| 529 | sysfs_fan_min_offset(1); |
| 530 | sysfs_fan_div_offset(1); |
| 531 | sysfs_fan_offset(2); |
| 532 | sysfs_fan_min_offset(2); |
| 533 | sysfs_fan_div_offset(2); |
| 534 | sysfs_fan_offset(3); |
| 535 | sysfs_fan_min_offset(3); |
| 536 | sysfs_fan_div_offset(3); |
| 537 | sysfs_fan_offset(4); |
| 538 | sysfs_fan_min_offset(4); |
| 539 | sysfs_fan_div_offset(4); |
| 540 | sysfs_fan_offset(5); |
| 541 | sysfs_fan_min_offset(5); |
| 542 | sysfs_fan_div_offset(5); |
| 543 | |
| 544 | #define show_temp1_reg(reg) \ |
| 545 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 546 | show_##reg(struct device *dev, struct device_attribute *attr, \ |
| 547 | char *buf) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 548 | { \ |
| 549 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ |
| 550 | return sprintf(buf, "%d\n", temp1_from_reg(data->reg)); \ |
| 551 | } |
| 552 | show_temp1_reg(temp1); |
| 553 | show_temp1_reg(temp1_max); |
| 554 | show_temp1_reg(temp1_max_hyst); |
| 555 | |
| 556 | #define store_temp1_reg(REG, reg) \ |
| 557 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 558 | store_temp1_##reg(struct device *dev, struct device_attribute *attr, \ |
| 559 | const char *buf, size_t count) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 560 | { \ |
| 561 | struct i2c_client *client = to_i2c_client(dev); \ |
| 562 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ |
| 563 | u32 val = simple_strtoul(buf, NULL, 10); \ |
| 564 | \ |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 565 | mutex_lock(&data->update_lock); \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 566 | data->temp1_##reg = temp1_to_reg(val); \ |
| 567 | w83627ehf_write_value(client, W83627EHF_REG_TEMP1_##REG, \ |
| 568 | data->temp1_##reg); \ |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 569 | mutex_unlock(&data->update_lock); \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 570 | return count; \ |
| 571 | } |
| 572 | store_temp1_reg(OVER, max); |
| 573 | store_temp1_reg(HYST, max_hyst); |
| 574 | |
| 575 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL); |
| 576 | static DEVICE_ATTR(temp1_max, S_IRUGO| S_IWUSR, |
| 577 | show_temp1_max, store_temp1_max); |
| 578 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO| S_IWUSR, |
| 579 | show_temp1_max_hyst, store_temp1_max_hyst); |
| 580 | |
| 581 | #define show_temp_reg(reg) \ |
| 582 | static ssize_t \ |
| 583 | show_##reg (struct device *dev, char *buf, int nr) \ |
| 584 | { \ |
| 585 | struct w83627ehf_data *data = w83627ehf_update_device(dev); \ |
| 586 | return sprintf(buf, "%d\n", \ |
| 587 | LM75_TEMP_FROM_REG(data->reg[nr])); \ |
| 588 | } |
| 589 | show_temp_reg(temp); |
| 590 | show_temp_reg(temp_max); |
| 591 | show_temp_reg(temp_max_hyst); |
| 592 | |
| 593 | #define store_temp_reg(REG, reg) \ |
| 594 | static ssize_t \ |
| 595 | store_##reg (struct device *dev, const char *buf, size_t count, int nr) \ |
| 596 | { \ |
| 597 | struct i2c_client *client = to_i2c_client(dev); \ |
| 598 | struct w83627ehf_data *data = i2c_get_clientdata(client); \ |
| 599 | u32 val = simple_strtoul(buf, NULL, 10); \ |
| 600 | \ |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 601 | mutex_lock(&data->update_lock); \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 602 | data->reg[nr] = LM75_TEMP_TO_REG(val); \ |
| 603 | w83627ehf_write_value(client, W83627EHF_REG_TEMP_##REG[nr], \ |
| 604 | data->reg[nr]); \ |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 605 | mutex_unlock(&data->update_lock); \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 606 | return count; \ |
| 607 | } |
| 608 | store_temp_reg(OVER, temp_max); |
| 609 | store_temp_reg(HYST, temp_max_hyst); |
| 610 | |
| 611 | #define sysfs_temp_offset(offset) \ |
| 612 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 613 | show_reg_temp##offset (struct device *dev, struct device_attribute *attr, \ |
| 614 | char *buf) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 615 | { \ |
| 616 | return show_temp(dev, buf, offset - 2); \ |
| 617 | } \ |
| 618 | static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
| 619 | show_reg_temp##offset, NULL); |
| 620 | |
| 621 | #define sysfs_temp_reg_offset(reg, offset) \ |
| 622 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 623 | show_reg_temp##offset##_##reg(struct device *dev, struct device_attribute *attr, \ |
| 624 | char *buf) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 625 | { \ |
| 626 | return show_temp_##reg(dev, buf, offset - 2); \ |
| 627 | } \ |
| 628 | static ssize_t \ |
Greg Kroah-Hartman | 6f637a6 | 2005-06-21 21:01:59 -0700 | [diff] [blame] | 629 | store_reg_temp##offset##_##reg(struct device *dev, struct device_attribute *attr, \ |
| 630 | const char *buf, size_t count) \ |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 631 | { \ |
| 632 | return store_temp_##reg(dev, buf, count, offset - 2); \ |
| 633 | } \ |
| 634 | static DEVICE_ATTR(temp##offset##_##reg, S_IRUGO| S_IWUSR, \ |
| 635 | show_reg_temp##offset##_##reg, \ |
| 636 | store_reg_temp##offset##_##reg); |
| 637 | |
| 638 | sysfs_temp_offset(2); |
| 639 | sysfs_temp_reg_offset(max, 2); |
| 640 | sysfs_temp_reg_offset(max_hyst, 2); |
| 641 | sysfs_temp_offset(3); |
| 642 | sysfs_temp_reg_offset(max, 3); |
| 643 | sysfs_temp_reg_offset(max_hyst, 3); |
| 644 | |
| 645 | /* |
| 646 | * Driver and client management |
| 647 | */ |
| 648 | |
| 649 | static struct i2c_driver w83627ehf_driver; |
| 650 | |
| 651 | static void w83627ehf_init_client(struct i2c_client *client) |
| 652 | { |
| 653 | int i; |
| 654 | u8 tmp; |
| 655 | |
| 656 | /* Start monitoring is needed */ |
| 657 | tmp = w83627ehf_read_value(client, W83627EHF_REG_CONFIG); |
| 658 | if (!(tmp & 0x01)) |
| 659 | w83627ehf_write_value(client, W83627EHF_REG_CONFIG, |
| 660 | tmp | 0x01); |
| 661 | |
| 662 | /* Enable temp2 and temp3 if needed */ |
| 663 | for (i = 0; i < 2; i++) { |
| 664 | tmp = w83627ehf_read_value(client, |
| 665 | W83627EHF_REG_TEMP_CONFIG[i]); |
| 666 | if (tmp & 0x01) |
| 667 | w83627ehf_write_value(client, |
| 668 | W83627EHF_REG_TEMP_CONFIG[i], |
| 669 | tmp & 0xfe); |
| 670 | } |
| 671 | } |
| 672 | |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 673 | static int w83627ehf_detect(struct i2c_adapter *adapter) |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 674 | { |
| 675 | struct i2c_client *client; |
| 676 | struct w83627ehf_data *data; |
| 677 | int i, err = 0; |
| 678 | |
Petr Vandrovec | ada0c2f | 2005-10-07 23:11:03 +0200 | [diff] [blame] | 679 | if (!request_region(address + REGION_OFFSET, REGION_LENGTH, |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 680 | w83627ehf_driver.driver.name)) { |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 681 | err = -EBUSY; |
| 682 | goto exit; |
| 683 | } |
| 684 | |
Deepak Saxena | ba9c2e8 | 2005-10-17 23:08:32 +0200 | [diff] [blame] | 685 | if (!(data = kzalloc(sizeof(struct w83627ehf_data), GFP_KERNEL))) { |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 686 | err = -ENOMEM; |
| 687 | goto exit_release; |
| 688 | } |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 689 | |
| 690 | client = &data->client; |
| 691 | i2c_set_clientdata(client, data); |
| 692 | client->addr = address; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 693 | mutex_init(&data->lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 694 | client->adapter = adapter; |
| 695 | client->driver = &w83627ehf_driver; |
| 696 | client->flags = 0; |
| 697 | |
| 698 | strlcpy(client->name, "w83627ehf", I2C_NAME_SIZE); |
| 699 | data->valid = 0; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame^] | 700 | mutex_init(&data->update_lock); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 701 | |
| 702 | /* Tell the i2c layer a new client has arrived */ |
| 703 | if ((err = i2c_attach_client(client))) |
| 704 | goto exit_free; |
| 705 | |
| 706 | /* Initialize the chip */ |
| 707 | w83627ehf_init_client(client); |
| 708 | |
| 709 | /* A few vars need to be filled upon startup */ |
| 710 | for (i = 0; i < 5; i++) |
| 711 | data->fan_min[i] = w83627ehf_read_value(client, |
| 712 | W83627EHF_REG_FAN_MIN[i]); |
| 713 | |
| 714 | /* It looks like fan4 and fan5 pins can be alternatively used |
| 715 | as fan on/off switches */ |
| 716 | data->has_fan = 0x07; /* fan1, fan2 and fan3 */ |
| 717 | i = w83627ehf_read_value(client, W83627EHF_REG_FANDIV1); |
| 718 | if (i & (1 << 2)) |
| 719 | data->has_fan |= (1 << 3); |
| 720 | if (i & (1 << 0)) |
| 721 | data->has_fan |= (1 << 4); |
| 722 | |
| 723 | /* Register sysfs hooks */ |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 724 | data->class_dev = hwmon_device_register(&client->dev); |
| 725 | if (IS_ERR(data->class_dev)) { |
| 726 | err = PTR_ERR(data->class_dev); |
| 727 | goto exit_detach; |
| 728 | } |
| 729 | |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 730 | device_create_file(&client->dev, &dev_attr_fan1_input); |
| 731 | device_create_file(&client->dev, &dev_attr_fan1_min); |
| 732 | device_create_file(&client->dev, &dev_attr_fan1_div); |
| 733 | device_create_file(&client->dev, &dev_attr_fan2_input); |
| 734 | device_create_file(&client->dev, &dev_attr_fan2_min); |
| 735 | device_create_file(&client->dev, &dev_attr_fan2_div); |
| 736 | device_create_file(&client->dev, &dev_attr_fan3_input); |
| 737 | device_create_file(&client->dev, &dev_attr_fan3_min); |
| 738 | device_create_file(&client->dev, &dev_attr_fan3_div); |
| 739 | |
| 740 | if (data->has_fan & (1 << 3)) { |
| 741 | device_create_file(&client->dev, &dev_attr_fan4_input); |
| 742 | device_create_file(&client->dev, &dev_attr_fan4_min); |
| 743 | device_create_file(&client->dev, &dev_attr_fan4_div); |
| 744 | } |
| 745 | if (data->has_fan & (1 << 4)) { |
| 746 | device_create_file(&client->dev, &dev_attr_fan5_input); |
| 747 | device_create_file(&client->dev, &dev_attr_fan5_min); |
| 748 | device_create_file(&client->dev, &dev_attr_fan5_div); |
| 749 | } |
| 750 | |
| 751 | device_create_file(&client->dev, &dev_attr_temp1_input); |
| 752 | device_create_file(&client->dev, &dev_attr_temp1_max); |
| 753 | device_create_file(&client->dev, &dev_attr_temp1_max_hyst); |
| 754 | device_create_file(&client->dev, &dev_attr_temp2_input); |
| 755 | device_create_file(&client->dev, &dev_attr_temp2_max); |
| 756 | device_create_file(&client->dev, &dev_attr_temp2_max_hyst); |
| 757 | device_create_file(&client->dev, &dev_attr_temp3_input); |
| 758 | device_create_file(&client->dev, &dev_attr_temp3_max); |
| 759 | device_create_file(&client->dev, &dev_attr_temp3_max_hyst); |
| 760 | |
| 761 | return 0; |
| 762 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 763 | exit_detach: |
| 764 | i2c_detach_client(client); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 765 | exit_free: |
| 766 | kfree(data); |
| 767 | exit_release: |
Petr Vandrovec | ada0c2f | 2005-10-07 23:11:03 +0200 | [diff] [blame] | 768 | release_region(address + REGION_OFFSET, REGION_LENGTH); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 769 | exit: |
| 770 | return err; |
| 771 | } |
| 772 | |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 773 | static int w83627ehf_detach_client(struct i2c_client *client) |
| 774 | { |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 775 | struct w83627ehf_data *data = i2c_get_clientdata(client); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 776 | int err; |
| 777 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 778 | hwmon_device_unregister(data->class_dev); |
| 779 | |
Jean Delvare | 7bef559 | 2005-07-27 22:14:49 +0200 | [diff] [blame] | 780 | if ((err = i2c_detach_client(client))) |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 781 | return err; |
Petr Vandrovec | ada0c2f | 2005-10-07 23:11:03 +0200 | [diff] [blame] | 782 | release_region(client->addr + REGION_OFFSET, REGION_LENGTH); |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 783 | kfree(data); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 784 | |
| 785 | return 0; |
| 786 | } |
| 787 | |
| 788 | static struct i2c_driver w83627ehf_driver = { |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 789 | .driver = { |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 790 | .name = "w83627ehf", |
| 791 | }, |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 792 | .attach_adapter = w83627ehf_detect, |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 793 | .detach_client = w83627ehf_detach_client, |
| 794 | }; |
| 795 | |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 796 | static int __init w83627ehf_find(int sioaddr, unsigned short *addr) |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 797 | { |
| 798 | u16 val; |
| 799 | |
| 800 | REG = sioaddr; |
| 801 | VAL = sioaddr + 1; |
| 802 | superio_enter(); |
| 803 | |
| 804 | val = (superio_inb(SIO_REG_DEVID) << 8) |
| 805 | | superio_inb(SIO_REG_DEVID + 1); |
| 806 | if ((val & SIO_ID_MASK) != SIO_W83627EHF_ID) { |
| 807 | superio_exit(); |
| 808 | return -ENODEV; |
| 809 | } |
| 810 | |
| 811 | superio_select(W83627EHF_LD_HWM); |
| 812 | val = (superio_inb(SIO_REG_ADDR) << 8) |
| 813 | | superio_inb(SIO_REG_ADDR + 1); |
Petr Vandrovec | ada0c2f | 2005-10-07 23:11:03 +0200 | [diff] [blame] | 814 | *addr = val & REGION_ALIGNMENT; |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 815 | if (*addr == 0) { |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 816 | superio_exit(); |
| 817 | return -ENODEV; |
| 818 | } |
| 819 | |
| 820 | /* Activate logical device if needed */ |
| 821 | val = superio_inb(SIO_REG_ENABLE); |
| 822 | if (!(val & 0x01)) |
| 823 | superio_outb(SIO_REG_ENABLE, val | 0x01); |
| 824 | |
| 825 | superio_exit(); |
| 826 | return 0; |
| 827 | } |
| 828 | |
| 829 | static int __init sensors_w83627ehf_init(void) |
| 830 | { |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 831 | if (w83627ehf_find(0x2e, &address) |
| 832 | && w83627ehf_find(0x4e, &address)) |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 833 | return -ENODEV; |
| 834 | |
Jean Delvare | fde0950 | 2005-07-19 23:51:07 +0200 | [diff] [blame] | 835 | return i2c_isa_add_driver(&w83627ehf_driver); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 836 | } |
| 837 | |
| 838 | static void __exit sensors_w83627ehf_exit(void) |
| 839 | { |
Jean Delvare | fde0950 | 2005-07-19 23:51:07 +0200 | [diff] [blame] | 840 | i2c_isa_del_driver(&w83627ehf_driver); |
Jean Delvare | 08e7e27 | 2005-04-25 22:43:25 +0200 | [diff] [blame] | 841 | } |
| 842 | |
| 843 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); |
| 844 | MODULE_DESCRIPTION("W83627EHF driver"); |
| 845 | MODULE_LICENSE("GPL"); |
| 846 | |
| 847 | module_init(sensors_w83627ehf_init); |
| 848 | module_exit(sensors_w83627ehf_exit); |