Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 1 | /* |
| 2 | * pc87427.c - hardware monitoring driver for the |
| 3 | * National Semiconductor PC87427 Super-I/O chip |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 4 | * Copyright (C) 2006, 2008 Jean Delvare <khali@linux-fr.org> |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * Supports the following chips: |
| 16 | * |
| 17 | * Chip #vin #fan #pwm #temp devid |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 18 | * PC87427 - 8 4 - 0xF2 |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 19 | * |
| 20 | * This driver assumes that no more than one chip is present. |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 21 | * Only fans are supported so far, although the chip can do much more. |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 22 | */ |
| 23 | |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/init.h> |
| 26 | #include <linux/slab.h> |
| 27 | #include <linux/jiffies.h> |
| 28 | #include <linux/platform_device.h> |
| 29 | #include <linux/hwmon.h> |
| 30 | #include <linux/hwmon-sysfs.h> |
| 31 | #include <linux/err.h> |
| 32 | #include <linux/mutex.h> |
| 33 | #include <linux/sysfs.h> |
Jean Delvare | ce7ee4e | 2007-05-08 17:21:59 +0200 | [diff] [blame] | 34 | #include <linux/ioport.h> |
Jean Delvare | b9acb64 | 2009-01-07 16:37:35 +0100 | [diff] [blame] | 35 | #include <linux/acpi.h> |
H Hartley Sweeten | 6055fae | 2009-09-15 17:18:13 +0200 | [diff] [blame] | 36 | #include <linux/io.h> |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 37 | |
Jean Delvare | 67b671b | 2007-12-06 23:13:42 +0100 | [diff] [blame] | 38 | static unsigned short force_id; |
| 39 | module_param(force_id, ushort, 0); |
| 40 | MODULE_PARM_DESC(force_id, "Override the detected device ID"); |
| 41 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 42 | static struct platform_device *pdev; |
| 43 | |
| 44 | #define DRVNAME "pc87427" |
| 45 | |
| 46 | /* The lock mutex protects both the I/O accesses (needed because the |
| 47 | device is using banked registers) and the register cache (needed to keep |
| 48 | the data in the registers and the cache in sync at any time). */ |
| 49 | struct pc87427_data { |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 50 | struct device *hwmon_dev; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 51 | struct mutex lock; |
| 52 | int address[2]; |
| 53 | const char *name; |
| 54 | |
| 55 | unsigned long last_updated; /* in jiffies */ |
| 56 | u8 fan_enabled; /* bit vector */ |
| 57 | u16 fan[8]; /* register values */ |
| 58 | u16 fan_min[8]; /* register values */ |
| 59 | u8 fan_status[8]; /* register values */ |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 60 | |
| 61 | u8 pwm_enabled; /* bit vector */ |
| 62 | u8 pwm_auto_ok; /* bit vector */ |
| 63 | u8 pwm_enable[4]; /* register values */ |
| 64 | u8 pwm[4]; /* register values */ |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 65 | }; |
| 66 | |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 67 | struct pc87427_sio_data { |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 68 | unsigned short address[2]; |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 69 | u8 has_fanin; |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 70 | u8 has_fanout; |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 71 | }; |
| 72 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 73 | /* |
| 74 | * Super-I/O registers and operations |
| 75 | */ |
| 76 | |
| 77 | #define SIOREG_LDSEL 0x07 /* Logical device select */ |
| 78 | #define SIOREG_DEVID 0x20 /* Device ID */ |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 79 | #define SIOREG_CF2 0x22 /* Configuration 2 */ |
| 80 | #define SIOREG_CF3 0x23 /* Configuration 3 */ |
| 81 | #define SIOREG_CF4 0x24 /* Configuration 4 */ |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 82 | #define SIOREG_CF5 0x25 /* Configuration 5 */ |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 83 | #define SIOREG_CFB 0x2B /* Configuration B */ |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 84 | #define SIOREG_CFC 0x2C /* Configuration C */ |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 85 | #define SIOREG_CFD 0x2D /* Configuration D */ |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 86 | #define SIOREG_ACT 0x30 /* Device activation */ |
| 87 | #define SIOREG_MAP 0x50 /* I/O or memory mapping */ |
| 88 | #define SIOREG_IOBASE 0x60 /* I/O base address */ |
| 89 | |
| 90 | static const u8 logdev[2] = { 0x09, 0x14 }; |
| 91 | static const char *logdev_str[2] = { DRVNAME " FMC", DRVNAME " HMC" }; |
| 92 | #define LD_FAN 0 |
| 93 | #define LD_IN 1 |
| 94 | #define LD_TEMP 1 |
| 95 | |
| 96 | static inline void superio_outb(int sioaddr, int reg, int val) |
| 97 | { |
| 98 | outb(reg, sioaddr); |
| 99 | outb(val, sioaddr + 1); |
| 100 | } |
| 101 | |
| 102 | static inline int superio_inb(int sioaddr, int reg) |
| 103 | { |
| 104 | outb(reg, sioaddr); |
| 105 | return inb(sioaddr + 1); |
| 106 | } |
| 107 | |
| 108 | static inline void superio_exit(int sioaddr) |
| 109 | { |
| 110 | outb(0x02, sioaddr); |
| 111 | outb(0x02, sioaddr + 1); |
| 112 | } |
| 113 | |
| 114 | /* |
| 115 | * Logical devices |
| 116 | */ |
| 117 | |
| 118 | #define REGION_LENGTH 32 |
| 119 | #define PC87427_REG_BANK 0x0f |
| 120 | #define BANK_FM(nr) (nr) |
| 121 | #define BANK_FT(nr) (0x08 + (nr)) |
| 122 | #define BANK_FC(nr) (0x10 + (nr) * 2) |
| 123 | |
| 124 | /* |
| 125 | * I/O access functions |
| 126 | */ |
| 127 | |
| 128 | /* ldi is the logical device index */ |
| 129 | static inline int pc87427_read8(struct pc87427_data *data, u8 ldi, u8 reg) |
| 130 | { |
| 131 | return inb(data->address[ldi] + reg); |
| 132 | } |
| 133 | |
| 134 | /* Must be called with data->lock held, except during init */ |
| 135 | static inline int pc87427_read8_bank(struct pc87427_data *data, u8 ldi, |
| 136 | u8 bank, u8 reg) |
| 137 | { |
| 138 | outb(bank, data->address[ldi] + PC87427_REG_BANK); |
| 139 | return inb(data->address[ldi] + reg); |
| 140 | } |
| 141 | |
| 142 | /* Must be called with data->lock held, except during init */ |
| 143 | static inline void pc87427_write8_bank(struct pc87427_data *data, u8 ldi, |
| 144 | u8 bank, u8 reg, u8 value) |
| 145 | { |
| 146 | outb(bank, data->address[ldi] + PC87427_REG_BANK); |
| 147 | outb(value, data->address[ldi] + reg); |
| 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Fan registers and conversions |
| 152 | */ |
| 153 | |
| 154 | /* fan data registers are 16-bit wide */ |
| 155 | #define PC87427_REG_FAN 0x12 |
| 156 | #define PC87427_REG_FAN_MIN 0x14 |
| 157 | #define PC87427_REG_FAN_STATUS 0x10 |
| 158 | |
| 159 | #define FAN_STATUS_STALL (1 << 3) |
| 160 | #define FAN_STATUS_LOSPD (1 << 1) |
| 161 | #define FAN_STATUS_MONEN (1 << 0) |
| 162 | |
| 163 | /* Dedicated function to read all registers related to a given fan input. |
| 164 | This saves us quite a few locks and bank selections. |
| 165 | Must be called with data->lock held. |
| 166 | nr is from 0 to 7 */ |
| 167 | static void pc87427_readall_fan(struct pc87427_data *data, u8 nr) |
| 168 | { |
| 169 | int iobase = data->address[LD_FAN]; |
| 170 | |
| 171 | outb(BANK_FM(nr), iobase + PC87427_REG_BANK); |
| 172 | data->fan[nr] = inw(iobase + PC87427_REG_FAN); |
| 173 | data->fan_min[nr] = inw(iobase + PC87427_REG_FAN_MIN); |
| 174 | data->fan_status[nr] = inb(iobase + PC87427_REG_FAN_STATUS); |
| 175 | /* Clear fan alarm bits */ |
| 176 | outb(data->fan_status[nr], iobase + PC87427_REG_FAN_STATUS); |
| 177 | } |
| 178 | |
| 179 | /* The 2 LSB of fan speed registers are used for something different. |
| 180 | The actual 2 LSB of the measurements are not available. */ |
| 181 | static inline unsigned long fan_from_reg(u16 reg) |
| 182 | { |
| 183 | reg &= 0xfffc; |
| 184 | if (reg == 0x0000 || reg == 0xfffc) |
| 185 | return 0; |
| 186 | return 5400000UL / reg; |
| 187 | } |
| 188 | |
| 189 | /* The 2 LSB of the fan speed limit registers are not significant. */ |
| 190 | static inline u16 fan_to_reg(unsigned long val) |
| 191 | { |
| 192 | if (val < 83UL) |
| 193 | return 0xffff; |
| 194 | if (val >= 1350000UL) |
| 195 | return 0x0004; |
| 196 | return ((1350000UL + val / 2) / val) << 2; |
| 197 | } |
| 198 | |
| 199 | /* |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 200 | * PWM registers and conversions |
| 201 | */ |
| 202 | |
| 203 | #define PC87427_REG_PWM_ENABLE 0x10 |
| 204 | #define PC87427_REG_PWM_DUTY 0x12 |
| 205 | |
| 206 | #define PWM_ENABLE_MODE_MASK (7 << 4) |
| 207 | #define PWM_ENABLE_CTLEN (1 << 0) |
| 208 | |
| 209 | #define PWM_MODE_MANUAL (0 << 4) |
| 210 | #define PWM_MODE_AUTO (1 << 4) |
| 211 | #define PWM_MODE_OFF (2 << 4) |
| 212 | #define PWM_MODE_ON (7 << 4) |
| 213 | |
| 214 | /* Dedicated function to read all registers related to a given PWM output. |
| 215 | This saves us quite a few locks and bank selections. |
| 216 | Must be called with data->lock held. |
| 217 | nr is from 0 to 3 */ |
| 218 | static void pc87427_readall_pwm(struct pc87427_data *data, u8 nr) |
| 219 | { |
| 220 | int iobase = data->address[LD_FAN]; |
| 221 | |
| 222 | outb(BANK_FC(nr), iobase + PC87427_REG_BANK); |
| 223 | data->pwm_enable[nr] = inb(iobase + PC87427_REG_PWM_ENABLE); |
| 224 | data->pwm[nr] = inb(iobase + PC87427_REG_PWM_DUTY); |
| 225 | } |
| 226 | |
| 227 | static inline int pwm_enable_from_reg(u8 reg) |
| 228 | { |
| 229 | switch (reg & PWM_ENABLE_MODE_MASK) { |
| 230 | case PWM_MODE_ON: |
| 231 | return 0; |
| 232 | case PWM_MODE_MANUAL: |
| 233 | case PWM_MODE_OFF: |
| 234 | return 1; |
| 235 | case PWM_MODE_AUTO: |
| 236 | return 2; |
| 237 | default: |
| 238 | return -EPROTO; |
| 239 | } |
| 240 | } |
| 241 | |
| 242 | static inline u8 pwm_enable_to_reg(unsigned long val, u8 pwmval) |
| 243 | { |
| 244 | switch (val) { |
| 245 | default: |
| 246 | return PWM_MODE_ON; |
| 247 | case 1: |
| 248 | return pwmval ? PWM_MODE_MANUAL : PWM_MODE_OFF; |
| 249 | case 2: |
| 250 | return PWM_MODE_AUTO; |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | /* |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 255 | * Data interface |
| 256 | */ |
| 257 | |
| 258 | static struct pc87427_data *pc87427_update_device(struct device *dev) |
| 259 | { |
| 260 | struct pc87427_data *data = dev_get_drvdata(dev); |
| 261 | int i; |
| 262 | |
| 263 | mutex_lock(&data->lock); |
| 264 | if (!time_after(jiffies, data->last_updated + HZ) |
| 265 | && data->last_updated) |
| 266 | goto done; |
| 267 | |
| 268 | /* Fans */ |
| 269 | for (i = 0; i < 8; i++) { |
| 270 | if (!(data->fan_enabled & (1 << i))) |
| 271 | continue; |
| 272 | pc87427_readall_fan(data, i); |
| 273 | } |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 274 | |
| 275 | /* PWM outputs */ |
| 276 | for (i = 0; i < 4; i++) { |
| 277 | if (!(data->pwm_enabled & (1 << i))) |
| 278 | continue; |
| 279 | pc87427_readall_pwm(data, i); |
| 280 | } |
| 281 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 282 | data->last_updated = jiffies; |
| 283 | |
| 284 | done: |
| 285 | mutex_unlock(&data->lock); |
| 286 | return data; |
| 287 | } |
| 288 | |
| 289 | static ssize_t show_fan_input(struct device *dev, struct device_attribute |
| 290 | *devattr, char *buf) |
| 291 | { |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 292 | struct pc87427_data *data = pc87427_update_device(dev); |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 293 | int nr = to_sensor_dev_attr(devattr)->index; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 294 | |
| 295 | return sprintf(buf, "%lu\n", fan_from_reg(data->fan[nr])); |
| 296 | } |
| 297 | |
| 298 | static ssize_t show_fan_min(struct device *dev, struct device_attribute |
| 299 | *devattr, char *buf) |
| 300 | { |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 301 | struct pc87427_data *data = pc87427_update_device(dev); |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 302 | int nr = to_sensor_dev_attr(devattr)->index; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 303 | |
| 304 | return sprintf(buf, "%lu\n", fan_from_reg(data->fan_min[nr])); |
| 305 | } |
| 306 | |
| 307 | static ssize_t show_fan_alarm(struct device *dev, struct device_attribute |
| 308 | *devattr, char *buf) |
| 309 | { |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 310 | struct pc87427_data *data = pc87427_update_device(dev); |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 311 | int nr = to_sensor_dev_attr(devattr)->index; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 312 | |
| 313 | return sprintf(buf, "%d\n", !!(data->fan_status[nr] |
| 314 | & FAN_STATUS_LOSPD)); |
| 315 | } |
| 316 | |
| 317 | static ssize_t show_fan_fault(struct device *dev, struct device_attribute |
| 318 | *devattr, char *buf) |
| 319 | { |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 320 | struct pc87427_data *data = pc87427_update_device(dev); |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 321 | int nr = to_sensor_dev_attr(devattr)->index; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 322 | |
| 323 | return sprintf(buf, "%d\n", !!(data->fan_status[nr] |
| 324 | & FAN_STATUS_STALL)); |
| 325 | } |
| 326 | |
| 327 | static ssize_t set_fan_min(struct device *dev, struct device_attribute |
| 328 | *devattr, const char *buf, size_t count) |
| 329 | { |
| 330 | struct pc87427_data *data = dev_get_drvdata(dev); |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 331 | int nr = to_sensor_dev_attr(devattr)->index; |
| 332 | unsigned long val; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 333 | int iobase = data->address[LD_FAN]; |
| 334 | |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 335 | if (strict_strtoul(buf, 10, &val) < 0) |
| 336 | return -EINVAL; |
| 337 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 338 | mutex_lock(&data->lock); |
| 339 | outb(BANK_FM(nr), iobase + PC87427_REG_BANK); |
| 340 | /* The low speed limit registers are read-only while monitoring |
| 341 | is enabled, so we have to disable monitoring, then change the |
| 342 | limit, and finally enable monitoring again. */ |
| 343 | outb(0, iobase + PC87427_REG_FAN_STATUS); |
| 344 | data->fan_min[nr] = fan_to_reg(val); |
| 345 | outw(data->fan_min[nr], iobase + PC87427_REG_FAN_MIN); |
| 346 | outb(FAN_STATUS_MONEN, iobase + PC87427_REG_FAN_STATUS); |
| 347 | mutex_unlock(&data->lock); |
| 348 | |
| 349 | return count; |
| 350 | } |
| 351 | |
| 352 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0); |
| 353 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1); |
| 354 | static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan_input, NULL, 2); |
| 355 | static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan_input, NULL, 3); |
| 356 | static SENSOR_DEVICE_ATTR(fan5_input, S_IRUGO, show_fan_input, NULL, 4); |
| 357 | static SENSOR_DEVICE_ATTR(fan6_input, S_IRUGO, show_fan_input, NULL, 5); |
| 358 | static SENSOR_DEVICE_ATTR(fan7_input, S_IRUGO, show_fan_input, NULL, 6); |
| 359 | static SENSOR_DEVICE_ATTR(fan8_input, S_IRUGO, show_fan_input, NULL, 7); |
| 360 | |
| 361 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, |
| 362 | show_fan_min, set_fan_min, 0); |
| 363 | static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR | S_IRUGO, |
| 364 | show_fan_min, set_fan_min, 1); |
| 365 | static SENSOR_DEVICE_ATTR(fan3_min, S_IWUSR | S_IRUGO, |
| 366 | show_fan_min, set_fan_min, 2); |
| 367 | static SENSOR_DEVICE_ATTR(fan4_min, S_IWUSR | S_IRUGO, |
| 368 | show_fan_min, set_fan_min, 3); |
| 369 | static SENSOR_DEVICE_ATTR(fan5_min, S_IWUSR | S_IRUGO, |
| 370 | show_fan_min, set_fan_min, 4); |
| 371 | static SENSOR_DEVICE_ATTR(fan6_min, S_IWUSR | S_IRUGO, |
| 372 | show_fan_min, set_fan_min, 5); |
| 373 | static SENSOR_DEVICE_ATTR(fan7_min, S_IWUSR | S_IRUGO, |
| 374 | show_fan_min, set_fan_min, 6); |
| 375 | static SENSOR_DEVICE_ATTR(fan8_min, S_IWUSR | S_IRUGO, |
| 376 | show_fan_min, set_fan_min, 7); |
| 377 | |
| 378 | static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_fan_alarm, NULL, 0); |
| 379 | static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_fan_alarm, NULL, 1); |
| 380 | static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_fan_alarm, NULL, 2); |
| 381 | static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_fan_alarm, NULL, 3); |
| 382 | static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_fan_alarm, NULL, 4); |
| 383 | static SENSOR_DEVICE_ATTR(fan6_alarm, S_IRUGO, show_fan_alarm, NULL, 5); |
| 384 | static SENSOR_DEVICE_ATTR(fan7_alarm, S_IRUGO, show_fan_alarm, NULL, 6); |
| 385 | static SENSOR_DEVICE_ATTR(fan8_alarm, S_IRUGO, show_fan_alarm, NULL, 7); |
| 386 | |
| 387 | static SENSOR_DEVICE_ATTR(fan1_fault, S_IRUGO, show_fan_fault, NULL, 0); |
| 388 | static SENSOR_DEVICE_ATTR(fan2_fault, S_IRUGO, show_fan_fault, NULL, 1); |
| 389 | static SENSOR_DEVICE_ATTR(fan3_fault, S_IRUGO, show_fan_fault, NULL, 2); |
| 390 | static SENSOR_DEVICE_ATTR(fan4_fault, S_IRUGO, show_fan_fault, NULL, 3); |
| 391 | static SENSOR_DEVICE_ATTR(fan5_fault, S_IRUGO, show_fan_fault, NULL, 4); |
| 392 | static SENSOR_DEVICE_ATTR(fan6_fault, S_IRUGO, show_fan_fault, NULL, 5); |
| 393 | static SENSOR_DEVICE_ATTR(fan7_fault, S_IRUGO, show_fan_fault, NULL, 6); |
| 394 | static SENSOR_DEVICE_ATTR(fan8_fault, S_IRUGO, show_fan_fault, NULL, 7); |
| 395 | |
| 396 | static struct attribute *pc87427_attributes_fan[8][5] = { |
| 397 | { |
| 398 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
| 399 | &sensor_dev_attr_fan1_min.dev_attr.attr, |
| 400 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
| 401 | &sensor_dev_attr_fan1_fault.dev_attr.attr, |
| 402 | NULL |
| 403 | }, { |
| 404 | &sensor_dev_attr_fan2_input.dev_attr.attr, |
| 405 | &sensor_dev_attr_fan2_min.dev_attr.attr, |
| 406 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
| 407 | &sensor_dev_attr_fan2_fault.dev_attr.attr, |
| 408 | NULL |
| 409 | }, { |
| 410 | &sensor_dev_attr_fan3_input.dev_attr.attr, |
| 411 | &sensor_dev_attr_fan3_min.dev_attr.attr, |
| 412 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
| 413 | &sensor_dev_attr_fan3_fault.dev_attr.attr, |
| 414 | NULL |
| 415 | }, { |
| 416 | &sensor_dev_attr_fan4_input.dev_attr.attr, |
| 417 | &sensor_dev_attr_fan4_min.dev_attr.attr, |
| 418 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, |
| 419 | &sensor_dev_attr_fan4_fault.dev_attr.attr, |
| 420 | NULL |
| 421 | }, { |
| 422 | &sensor_dev_attr_fan5_input.dev_attr.attr, |
| 423 | &sensor_dev_attr_fan5_min.dev_attr.attr, |
| 424 | &sensor_dev_attr_fan5_alarm.dev_attr.attr, |
| 425 | &sensor_dev_attr_fan5_fault.dev_attr.attr, |
| 426 | NULL |
| 427 | }, { |
| 428 | &sensor_dev_attr_fan6_input.dev_attr.attr, |
| 429 | &sensor_dev_attr_fan6_min.dev_attr.attr, |
| 430 | &sensor_dev_attr_fan6_alarm.dev_attr.attr, |
| 431 | &sensor_dev_attr_fan6_fault.dev_attr.attr, |
| 432 | NULL |
| 433 | }, { |
| 434 | &sensor_dev_attr_fan7_input.dev_attr.attr, |
| 435 | &sensor_dev_attr_fan7_min.dev_attr.attr, |
| 436 | &sensor_dev_attr_fan7_alarm.dev_attr.attr, |
| 437 | &sensor_dev_attr_fan7_fault.dev_attr.attr, |
| 438 | NULL |
| 439 | }, { |
| 440 | &sensor_dev_attr_fan8_input.dev_attr.attr, |
| 441 | &sensor_dev_attr_fan8_min.dev_attr.attr, |
| 442 | &sensor_dev_attr_fan8_alarm.dev_attr.attr, |
| 443 | &sensor_dev_attr_fan8_fault.dev_attr.attr, |
| 444 | NULL |
| 445 | } |
| 446 | }; |
| 447 | |
| 448 | static const struct attribute_group pc87427_group_fan[8] = { |
| 449 | { .attrs = pc87427_attributes_fan[0] }, |
| 450 | { .attrs = pc87427_attributes_fan[1] }, |
| 451 | { .attrs = pc87427_attributes_fan[2] }, |
| 452 | { .attrs = pc87427_attributes_fan[3] }, |
| 453 | { .attrs = pc87427_attributes_fan[4] }, |
| 454 | { .attrs = pc87427_attributes_fan[5] }, |
| 455 | { .attrs = pc87427_attributes_fan[6] }, |
| 456 | { .attrs = pc87427_attributes_fan[7] }, |
| 457 | }; |
| 458 | |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 459 | /* Must be called with data->lock held and pc87427_readall_pwm() freshly |
| 460 | called */ |
| 461 | static void update_pwm_enable(struct pc87427_data *data, int nr, u8 mode) |
| 462 | { |
| 463 | int iobase = data->address[LD_FAN]; |
| 464 | data->pwm_enable[nr] &= ~PWM_ENABLE_MODE_MASK; |
| 465 | data->pwm_enable[nr] |= mode; |
| 466 | outb(data->pwm_enable[nr], iobase + PC87427_REG_PWM_ENABLE); |
| 467 | } |
| 468 | |
| 469 | static ssize_t show_pwm_enable(struct device *dev, struct device_attribute |
| 470 | *devattr, char *buf) |
| 471 | { |
| 472 | struct pc87427_data *data = pc87427_update_device(dev); |
| 473 | int nr = to_sensor_dev_attr(devattr)->index; |
| 474 | int pwm_enable; |
| 475 | |
| 476 | pwm_enable = pwm_enable_from_reg(data->pwm_enable[nr]); |
| 477 | if (pwm_enable < 0) |
| 478 | return pwm_enable; |
| 479 | return sprintf(buf, "%d\n", pwm_enable); |
| 480 | } |
| 481 | |
| 482 | static ssize_t set_pwm_enable(struct device *dev, struct device_attribute |
| 483 | *devattr, const char *buf, size_t count) |
| 484 | { |
| 485 | struct pc87427_data *data = dev_get_drvdata(dev); |
| 486 | int nr = to_sensor_dev_attr(devattr)->index; |
| 487 | unsigned long val; |
| 488 | |
| 489 | if (strict_strtoul(buf, 10, &val) < 0 || val > 2) |
| 490 | return -EINVAL; |
| 491 | /* Can't go to automatic mode if it isn't configured */ |
| 492 | if (val == 2 && !(data->pwm_auto_ok & (1 << nr))) |
| 493 | return -EINVAL; |
| 494 | |
| 495 | mutex_lock(&data->lock); |
| 496 | pc87427_readall_pwm(data, nr); |
| 497 | update_pwm_enable(data, nr, pwm_enable_to_reg(val, data->pwm[nr])); |
| 498 | mutex_unlock(&data->lock); |
| 499 | |
| 500 | return count; |
| 501 | } |
| 502 | |
| 503 | static ssize_t show_pwm(struct device *dev, struct device_attribute |
| 504 | *devattr, char *buf) |
| 505 | { |
| 506 | struct pc87427_data *data = pc87427_update_device(dev); |
| 507 | int nr = to_sensor_dev_attr(devattr)->index; |
| 508 | |
| 509 | return sprintf(buf, "%d\n", (int)data->pwm[nr]); |
| 510 | } |
| 511 | |
| 512 | static ssize_t set_pwm(struct device *dev, struct device_attribute |
| 513 | *devattr, const char *buf, size_t count) |
| 514 | { |
| 515 | struct pc87427_data *data = dev_get_drvdata(dev); |
| 516 | int nr = to_sensor_dev_attr(devattr)->index; |
| 517 | unsigned long val; |
| 518 | int iobase = data->address[LD_FAN]; |
| 519 | u8 mode; |
| 520 | |
| 521 | if (strict_strtoul(buf, 10, &val) < 0 || val > 0xff) |
| 522 | return -EINVAL; |
| 523 | |
| 524 | mutex_lock(&data->lock); |
| 525 | pc87427_readall_pwm(data, nr); |
| 526 | mode = data->pwm_enable[nr] & PWM_ENABLE_MODE_MASK; |
| 527 | if (mode != PWM_MODE_MANUAL && mode != PWM_MODE_OFF) { |
| 528 | dev_notice(dev, "Can't set PWM%d duty cycle while not in " |
| 529 | "manual mode\n", nr + 1); |
| 530 | mutex_unlock(&data->lock); |
| 531 | return -EPERM; |
| 532 | } |
| 533 | |
| 534 | /* We may have to change the mode */ |
| 535 | if (mode == PWM_MODE_MANUAL && val == 0) { |
| 536 | /* Transition from Manual to Off */ |
| 537 | update_pwm_enable(data, nr, PWM_MODE_OFF); |
| 538 | mode = PWM_MODE_OFF; |
| 539 | dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1, |
| 540 | "manual", "off"); |
| 541 | } else if (mode == PWM_MODE_OFF && val != 0) { |
| 542 | /* Transition from Off to Manual */ |
| 543 | update_pwm_enable(data, nr, PWM_MODE_MANUAL); |
| 544 | mode = PWM_MODE_MANUAL; |
| 545 | dev_dbg(dev, "Switching PWM%d from %s to %s\n", nr + 1, |
| 546 | "off", "manual"); |
| 547 | } |
| 548 | |
| 549 | data->pwm[nr] = val; |
| 550 | if (mode == PWM_MODE_MANUAL) |
| 551 | outb(val, iobase + PC87427_REG_PWM_DUTY); |
| 552 | mutex_unlock(&data->lock); |
| 553 | |
| 554 | return count; |
| 555 | } |
| 556 | |
| 557 | static SENSOR_DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, |
| 558 | show_pwm_enable, set_pwm_enable, 0); |
| 559 | static SENSOR_DEVICE_ATTR(pwm2_enable, S_IWUSR | S_IRUGO, |
| 560 | show_pwm_enable, set_pwm_enable, 1); |
| 561 | static SENSOR_DEVICE_ATTR(pwm3_enable, S_IWUSR | S_IRUGO, |
| 562 | show_pwm_enable, set_pwm_enable, 2); |
| 563 | static SENSOR_DEVICE_ATTR(pwm4_enable, S_IWUSR | S_IRUGO, |
| 564 | show_pwm_enable, set_pwm_enable, 3); |
| 565 | |
| 566 | static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 0); |
| 567 | static SENSOR_DEVICE_ATTR(pwm2, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 1); |
| 568 | static SENSOR_DEVICE_ATTR(pwm3, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 2); |
| 569 | static SENSOR_DEVICE_ATTR(pwm4, S_IWUSR | S_IRUGO, show_pwm, set_pwm, 3); |
| 570 | |
| 571 | static struct attribute *pc87427_attributes_pwm[4][3] = { |
| 572 | { |
| 573 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
| 574 | &sensor_dev_attr_pwm1.dev_attr.attr, |
| 575 | NULL |
| 576 | }, { |
| 577 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, |
| 578 | &sensor_dev_attr_pwm2.dev_attr.attr, |
| 579 | NULL |
| 580 | }, { |
| 581 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, |
| 582 | &sensor_dev_attr_pwm3.dev_attr.attr, |
| 583 | NULL |
| 584 | }, { |
| 585 | &sensor_dev_attr_pwm4_enable.dev_attr.attr, |
| 586 | &sensor_dev_attr_pwm4.dev_attr.attr, |
| 587 | NULL |
| 588 | } |
| 589 | }; |
| 590 | |
| 591 | static const struct attribute_group pc87427_group_pwm[4] = { |
| 592 | { .attrs = pc87427_attributes_pwm[0] }, |
| 593 | { .attrs = pc87427_attributes_pwm[1] }, |
| 594 | { .attrs = pc87427_attributes_pwm[2] }, |
| 595 | { .attrs = pc87427_attributes_pwm[3] }, |
| 596 | }; |
| 597 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 598 | static ssize_t show_name(struct device *dev, struct device_attribute |
| 599 | *devattr, char *buf) |
| 600 | { |
| 601 | struct pc87427_data *data = dev_get_drvdata(dev); |
| 602 | |
| 603 | return sprintf(buf, "%s\n", data->name); |
| 604 | } |
| 605 | static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
| 606 | |
| 607 | |
| 608 | /* |
| 609 | * Device detection, attach and detach |
| 610 | */ |
| 611 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 612 | static void pc87427_release_regions(struct platform_device *pdev, int count) |
| 613 | { |
| 614 | struct resource *res; |
| 615 | int i; |
| 616 | |
| 617 | for (i = 0; i < count; i++) { |
| 618 | res = platform_get_resource(pdev, IORESOURCE_IO, i); |
| 619 | release_region(res->start, resource_size(res)); |
| 620 | } |
| 621 | } |
| 622 | |
| 623 | static int __devinit pc87427_request_regions(struct platform_device *pdev, |
| 624 | int count) |
| 625 | { |
| 626 | struct resource *res; |
| 627 | int i, err = 0; |
| 628 | |
| 629 | for (i = 0; i < count; i++) { |
| 630 | res = platform_get_resource(pdev, IORESOURCE_IO, i); |
| 631 | if (!res) { |
| 632 | err = -ENOENT; |
| 633 | dev_err(&pdev->dev, "Missing resource #%d\n", i); |
| 634 | break; |
| 635 | } |
| 636 | if (!request_region(res->start, resource_size(res), DRVNAME)) { |
| 637 | err = -EBUSY; |
| 638 | dev_err(&pdev->dev, |
| 639 | "Failed to request region 0x%lx-0x%lx\n", |
| 640 | (unsigned long)res->start, |
| 641 | (unsigned long)res->end); |
| 642 | break; |
| 643 | } |
| 644 | } |
| 645 | |
| 646 | if (err && i) |
| 647 | pc87427_release_regions(pdev, i); |
| 648 | |
| 649 | return err; |
| 650 | } |
| 651 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 652 | static void __devinit pc87427_init_device(struct device *dev) |
| 653 | { |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 654 | struct pc87427_sio_data *sio_data = dev->platform_data; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 655 | struct pc87427_data *data = dev_get_drvdata(dev); |
| 656 | int i; |
| 657 | u8 reg; |
| 658 | |
| 659 | /* The FMC module should be ready */ |
| 660 | reg = pc87427_read8(data, LD_FAN, PC87427_REG_BANK); |
| 661 | if (!(reg & 0x80)) |
| 662 | dev_warn(dev, "FMC module not ready!\n"); |
| 663 | |
| 664 | /* Check which fans are enabled */ |
| 665 | for (i = 0; i < 8; i++) { |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 666 | if (!(sio_data->has_fanin & (1 << i))) /* Not wired */ |
| 667 | continue; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 668 | reg = pc87427_read8_bank(data, LD_FAN, BANK_FM(i), |
| 669 | PC87427_REG_FAN_STATUS); |
| 670 | if (reg & FAN_STATUS_MONEN) |
| 671 | data->fan_enabled |= (1 << i); |
| 672 | } |
| 673 | |
| 674 | if (!data->fan_enabled) { |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 675 | dev_dbg(dev, "Enabling monitoring of all fans\n"); |
| 676 | for (i = 0; i < 8; i++) { |
| 677 | if (!(sio_data->has_fanin & (1 << i))) /* Not wired */ |
| 678 | continue; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 679 | pc87427_write8_bank(data, LD_FAN, BANK_FM(i), |
| 680 | PC87427_REG_FAN_STATUS, |
| 681 | FAN_STATUS_MONEN); |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 682 | } |
| 683 | data->fan_enabled = sio_data->has_fanin; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 684 | } |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 685 | |
| 686 | /* Check which PWM outputs are enabled */ |
| 687 | for (i = 0; i < 4; i++) { |
| 688 | if (!(sio_data->has_fanout & (1 << i))) /* Not wired */ |
| 689 | continue; |
| 690 | reg = pc87427_read8_bank(data, LD_FAN, BANK_FC(i), |
| 691 | PC87427_REG_PWM_ENABLE); |
| 692 | if (reg & PWM_ENABLE_CTLEN) |
| 693 | data->pwm_enabled |= (1 << i); |
| 694 | |
| 695 | /* We don't expose an interface to reconfigure the automatic |
| 696 | fan control mode, so only allow to return to this mode if |
| 697 | it was originally set. */ |
| 698 | if ((reg & PWM_ENABLE_MODE_MASK) == PWM_MODE_AUTO) { |
| 699 | dev_dbg(dev, "PWM%d is in automatic control mode\n", |
| 700 | i + 1); |
| 701 | data->pwm_auto_ok |= (1 << i); |
| 702 | } |
| 703 | } |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 704 | } |
| 705 | |
| 706 | static int __devinit pc87427_probe(struct platform_device *pdev) |
| 707 | { |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 708 | struct pc87427_sio_data *sio_data = pdev->dev.platform_data; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 709 | struct pc87427_data *data; |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 710 | int i, err, res_count; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 711 | |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 712 | data = kzalloc(sizeof(struct pc87427_data), GFP_KERNEL); |
| 713 | if (!data) { |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 714 | err = -ENOMEM; |
| 715 | printk(KERN_ERR DRVNAME ": Out of memory\n"); |
| 716 | goto exit; |
| 717 | } |
| 718 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 719 | data->address[0] = sio_data->address[0]; |
| 720 | data->address[1] = sio_data->address[1]; |
| 721 | res_count = (data->address[0] != 0) + (data->address[1] != 0); |
| 722 | |
| 723 | err = pc87427_request_regions(pdev, res_count); |
| 724 | if (err) |
Jean Delvare | ce7ee4e | 2007-05-08 17:21:59 +0200 | [diff] [blame] | 725 | goto exit_kfree; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 726 | |
| 727 | mutex_init(&data->lock); |
| 728 | data->name = "pc87427"; |
| 729 | platform_set_drvdata(pdev, data); |
| 730 | pc87427_init_device(&pdev->dev); |
| 731 | |
| 732 | /* Register sysfs hooks */ |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 733 | err = device_create_file(&pdev->dev, &dev_attr_name); |
| 734 | if (err) |
Jean Delvare | ce7ee4e | 2007-05-08 17:21:59 +0200 | [diff] [blame] | 735 | goto exit_release_region; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 736 | for (i = 0; i < 8; i++) { |
| 737 | if (!(data->fan_enabled & (1 << i))) |
| 738 | continue; |
Jean Delvare | 0d22d58 | 2010-08-14 21:08:57 +0200 | [diff] [blame] | 739 | err = sysfs_create_group(&pdev->dev.kobj, |
| 740 | &pc87427_group_fan[i]); |
| 741 | if (err) |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 742 | goto exit_remove_files; |
| 743 | } |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 744 | for (i = 0; i < 4; i++) { |
| 745 | if (!(data->pwm_enabled & (1 << i))) |
| 746 | continue; |
| 747 | err = sysfs_create_group(&pdev->dev.kobj, |
| 748 | &pc87427_group_pwm[i]); |
| 749 | if (err) |
| 750 | goto exit_remove_files; |
| 751 | } |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 752 | |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 753 | data->hwmon_dev = hwmon_device_register(&pdev->dev); |
| 754 | if (IS_ERR(data->hwmon_dev)) { |
| 755 | err = PTR_ERR(data->hwmon_dev); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 756 | dev_err(&pdev->dev, "Class registration failed (%d)\n", err); |
| 757 | goto exit_remove_files; |
| 758 | } |
| 759 | |
| 760 | return 0; |
| 761 | |
| 762 | exit_remove_files: |
| 763 | for (i = 0; i < 8; i++) { |
| 764 | if (!(data->fan_enabled & (1 << i))) |
| 765 | continue; |
| 766 | sysfs_remove_group(&pdev->dev.kobj, &pc87427_group_fan[i]); |
| 767 | } |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 768 | for (i = 0; i < 4; i++) { |
| 769 | if (!(data->pwm_enabled & (1 << i))) |
| 770 | continue; |
| 771 | sysfs_remove_group(&pdev->dev.kobj, &pc87427_group_pwm[i]); |
| 772 | } |
Jean Delvare | ce7ee4e | 2007-05-08 17:21:59 +0200 | [diff] [blame] | 773 | exit_release_region: |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 774 | pc87427_release_regions(pdev, res_count); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 775 | exit_kfree: |
| 776 | platform_set_drvdata(pdev, NULL); |
| 777 | kfree(data); |
| 778 | exit: |
| 779 | return err; |
| 780 | } |
| 781 | |
| 782 | static int __devexit pc87427_remove(struct platform_device *pdev) |
| 783 | { |
| 784 | struct pc87427_data *data = platform_get_drvdata(pdev); |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 785 | int i, res_count; |
| 786 | |
| 787 | res_count = (data->address[0] != 0) + (data->address[1] != 0); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 788 | |
Tony Jones | 1beeffe | 2007-08-20 13:46:20 -0700 | [diff] [blame] | 789 | hwmon_device_unregister(data->hwmon_dev); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 790 | device_remove_file(&pdev->dev, &dev_attr_name); |
| 791 | for (i = 0; i < 8; i++) { |
| 792 | if (!(data->fan_enabled & (1 << i))) |
| 793 | continue; |
| 794 | sysfs_remove_group(&pdev->dev.kobj, &pc87427_group_fan[i]); |
| 795 | } |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 796 | for (i = 0; i < 4; i++) { |
| 797 | if (!(data->pwm_enabled & (1 << i))) |
| 798 | continue; |
| 799 | sysfs_remove_group(&pdev->dev.kobj, &pc87427_group_pwm[i]); |
| 800 | } |
Jean Delvare | 04a6217 | 2007-06-12 13:57:19 +0200 | [diff] [blame] | 801 | platform_set_drvdata(pdev, NULL); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 802 | kfree(data); |
| 803 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 804 | pc87427_release_regions(pdev, res_count); |
Jean Delvare | ce7ee4e | 2007-05-08 17:21:59 +0200 | [diff] [blame] | 805 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 806 | return 0; |
| 807 | } |
| 808 | |
| 809 | |
| 810 | static struct platform_driver pc87427_driver = { |
| 811 | .driver = { |
| 812 | .owner = THIS_MODULE, |
| 813 | .name = DRVNAME, |
| 814 | }, |
| 815 | .probe = pc87427_probe, |
| 816 | .remove = __devexit_p(pc87427_remove), |
| 817 | }; |
| 818 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 819 | static int __init pc87427_device_add(const struct pc87427_sio_data *sio_data) |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 820 | { |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 821 | struct resource res[2] = { |
| 822 | { .flags = IORESOURCE_IO }, |
| 823 | { .flags = IORESOURCE_IO }, |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 824 | }; |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 825 | int err, i, res_count; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 826 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 827 | res_count = 0; |
| 828 | for (i = 0; i < 2; i++) { |
| 829 | if (!sio_data->address[i]) |
| 830 | continue; |
| 831 | res[res_count].start = sio_data->address[i]; |
| 832 | res[res_count].end = sio_data->address[i] + REGION_LENGTH - 1; |
| 833 | res[res_count].name = logdev_str[i]; |
Jean Delvare | b9acb64 | 2009-01-07 16:37:35 +0100 | [diff] [blame] | 834 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 835 | err = acpi_check_resource_conflict(&res[res_count]); |
| 836 | if (err) |
| 837 | goto exit; |
| 838 | |
| 839 | res_count++; |
| 840 | } |
| 841 | |
| 842 | pdev = platform_device_alloc(DRVNAME, res[0].start); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 843 | if (!pdev) { |
| 844 | err = -ENOMEM; |
| 845 | printk(KERN_ERR DRVNAME ": Device allocation failed\n"); |
| 846 | goto exit; |
| 847 | } |
| 848 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 849 | err = platform_device_add_resources(pdev, res, res_count); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 850 | if (err) { |
| 851 | printk(KERN_ERR DRVNAME ": Device resource addition failed " |
| 852 | "(%d)\n", err); |
| 853 | goto exit_device_put; |
| 854 | } |
| 855 | |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 856 | err = platform_device_add_data(pdev, sio_data, |
| 857 | sizeof(struct pc87427_sio_data)); |
| 858 | if (err) { |
| 859 | printk(KERN_ERR DRVNAME ": Platform data allocation failed\n"); |
| 860 | goto exit_device_put; |
| 861 | } |
| 862 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 863 | err = platform_device_add(pdev); |
| 864 | if (err) { |
| 865 | printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", |
| 866 | err); |
| 867 | goto exit_device_put; |
| 868 | } |
| 869 | |
| 870 | return 0; |
| 871 | |
| 872 | exit_device_put: |
| 873 | platform_device_put(pdev); |
| 874 | exit: |
| 875 | return err; |
| 876 | } |
| 877 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 878 | static int __init pc87427_find(int sioaddr, struct pc87427_sio_data *sio_data) |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 879 | { |
| 880 | u16 val; |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 881 | u8 cfg, cfg_b; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 882 | int i, err = 0; |
| 883 | |
| 884 | /* Identify device */ |
Jean Delvare | 67b671b | 2007-12-06 23:13:42 +0100 | [diff] [blame] | 885 | val = force_id ? force_id : superio_inb(sioaddr, SIOREG_DEVID); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 886 | if (val != 0xf2) { /* PC87427 */ |
| 887 | err = -ENODEV; |
| 888 | goto exit; |
| 889 | } |
| 890 | |
| 891 | for (i = 0; i < 2; i++) { |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 892 | sio_data->address[i] = 0; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 893 | /* Select logical device */ |
| 894 | superio_outb(sioaddr, SIOREG_LDSEL, logdev[i]); |
| 895 | |
| 896 | val = superio_inb(sioaddr, SIOREG_ACT); |
| 897 | if (!(val & 0x01)) { |
| 898 | printk(KERN_INFO DRVNAME ": Logical device 0x%02x " |
| 899 | "not activated\n", logdev[i]); |
| 900 | continue; |
| 901 | } |
| 902 | |
| 903 | val = superio_inb(sioaddr, SIOREG_MAP); |
| 904 | if (val & 0x01) { |
| 905 | printk(KERN_WARNING DRVNAME ": Logical device 0x%02x " |
| 906 | "is memory-mapped, can't use\n", logdev[i]); |
| 907 | continue; |
| 908 | } |
| 909 | |
| 910 | val = (superio_inb(sioaddr, SIOREG_IOBASE) << 8) |
| 911 | | superio_inb(sioaddr, SIOREG_IOBASE + 1); |
| 912 | if (!val) { |
| 913 | printk(KERN_INFO DRVNAME ": I/O base address not set " |
| 914 | "for logical device 0x%02x\n", logdev[i]); |
| 915 | continue; |
| 916 | } |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 917 | sio_data->address[i] = val; |
| 918 | } |
| 919 | |
| 920 | /* No point in loading the driver if everything is disabled */ |
| 921 | if (!sio_data->address[0] && !sio_data->address[1]) { |
| 922 | err = -ENODEV; |
| 923 | goto exit; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 924 | } |
| 925 | |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 926 | /* Check which fan inputs are wired */ |
| 927 | sio_data->has_fanin = (1 << 2) | (1 << 3); /* FANIN2, FANIN3 */ |
| 928 | |
| 929 | cfg = superio_inb(sioaddr, SIOREG_CF2); |
| 930 | if (!(cfg & (1 << 3))) |
| 931 | sio_data->has_fanin |= (1 << 0); /* FANIN0 */ |
| 932 | if (!(cfg & (1 << 2))) |
| 933 | sio_data->has_fanin |= (1 << 4); /* FANIN4 */ |
| 934 | |
| 935 | cfg = superio_inb(sioaddr, SIOREG_CFD); |
| 936 | if (!(cfg & (1 << 0))) |
| 937 | sio_data->has_fanin |= (1 << 1); /* FANIN1 */ |
| 938 | |
| 939 | cfg = superio_inb(sioaddr, SIOREG_CF4); |
| 940 | if (!(cfg & (1 << 0))) |
| 941 | sio_data->has_fanin |= (1 << 7); /* FANIN7 */ |
| 942 | cfg_b = superio_inb(sioaddr, SIOREG_CFB); |
| 943 | if (!(cfg & (1 << 1)) && (cfg_b & (1 << 3))) |
| 944 | sio_data->has_fanin |= (1 << 5); /* FANIN5 */ |
| 945 | cfg = superio_inb(sioaddr, SIOREG_CF3); |
| 946 | if ((cfg & (1 << 3)) && !(cfg_b & (1 << 5))) |
| 947 | sio_data->has_fanin |= (1 << 6); /* FANIN6 */ |
| 948 | |
Jean Delvare | 328716b | 2010-08-14 21:08:58 +0200 | [diff] [blame] | 949 | /* Check which fan outputs are wired */ |
| 950 | sio_data->has_fanout = (1 << 0); /* FANOUT0 */ |
| 951 | if (cfg_b & (1 << 0)) |
| 952 | sio_data->has_fanout |= (1 << 3); /* FANOUT3 */ |
| 953 | |
| 954 | cfg = superio_inb(sioaddr, SIOREG_CFC); |
| 955 | if (!(cfg & (1 << 4))) { |
| 956 | if (cfg_b & (1 << 1)) |
| 957 | sio_data->has_fanout |= (1 << 1); /* FANOUT1 */ |
| 958 | if (cfg_b & (1 << 2)) |
| 959 | sio_data->has_fanout |= (1 << 2); /* FANOUT2 */ |
| 960 | } |
| 961 | |
| 962 | /* FANOUT1 and FANOUT2 can each be routed to 2 different pins */ |
| 963 | cfg = superio_inb(sioaddr, SIOREG_CF5); |
| 964 | if (cfg & (1 << 6)) |
| 965 | sio_data->has_fanout |= (1 << 1); /* FANOUT1 */ |
| 966 | if (cfg & (1 << 5)) |
| 967 | sio_data->has_fanout |= (1 << 2); /* FANOUT2 */ |
| 968 | |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 969 | exit: |
| 970 | superio_exit(sioaddr); |
| 971 | return err; |
| 972 | } |
| 973 | |
| 974 | static int __init pc87427_init(void) |
| 975 | { |
| 976 | int err; |
Jean Delvare | 4e7d99e | 2010-08-14 21:08:56 +0200 | [diff] [blame] | 977 | struct pc87427_sio_data sio_data; |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 978 | |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 979 | if (pc87427_find(0x2e, &sio_data) |
| 980 | && pc87427_find(0x4e, &sio_data)) |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 981 | return -ENODEV; |
| 982 | |
| 983 | err = platform_driver_register(&pc87427_driver); |
| 984 | if (err) |
| 985 | goto exit; |
| 986 | |
| 987 | /* Sets global pdev as a side effect */ |
Jean Delvare | 9d32df1 | 2010-08-14 21:08:58 +0200 | [diff] [blame^] | 988 | err = pc87427_device_add(&sio_data); |
Jean Delvare | ba224e2 | 2006-12-12 18:18:29 +0100 | [diff] [blame] | 989 | if (err) |
| 990 | goto exit_driver; |
| 991 | |
| 992 | return 0; |
| 993 | |
| 994 | exit_driver: |
| 995 | platform_driver_unregister(&pc87427_driver); |
| 996 | exit: |
| 997 | return err; |
| 998 | } |
| 999 | |
| 1000 | static void __exit pc87427_exit(void) |
| 1001 | { |
| 1002 | platform_device_unregister(pdev); |
| 1003 | platform_driver_unregister(&pc87427_driver); |
| 1004 | } |
| 1005 | |
| 1006 | MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org>"); |
| 1007 | MODULE_DESCRIPTION("PC87427 hardware monitoring driver"); |
| 1008 | MODULE_LICENSE("GPL"); |
| 1009 | |
| 1010 | module_init(pc87427_init); |
| 1011 | module_exit(pc87427_exit); |