projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * gl518sm.c - Part of lm_sensors, Linux kernel modules for hardware | |
| 3 | * monitoring | |
| 4 | * Copyright (C) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and | |
| 5 | * Kyosti Malkki <kmalkki@cc.hut.fi> | |
| 6 | * Copyright (C) 2004 Hong-Gunn Chew <hglinux@gunnet.org> and | |
| 7 | * Jean Delvare <khali@linux-fr.org> | |
| 8 | * | |
| 9 | * This program is free software; you can redistribute it and/or modify | |
| 10 | * it under the terms of the GNU General Public License as published by | |
| 11 | * the Free Software Foundation; either version 2 of the License, or | |
| 12 | * (at your option) any later version. | |
| 13 | * | |
| 14 | * This program is distributed in the hope that it will be useful, | |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 | * GNU General Public License for more details. | |
| 18 | * | |
| 19 | * You should have received a copy of the GNU General Public License | |
| 20 | * along with this program; if not, write to the Free Software | |
| 21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
| 22 | * | |
| 23 | * Ported to Linux 2.6 by Hong-Gunn Chew with the help of Jean Delvare | |
| 24 | * and advice of Greg Kroah-Hartman. | |
| 25 | * | |
| 26 | * Notes about the port: | |
| 27 | * Release 0x00 of the GL518SM chipset doesn't support reading of in0, | |
| 28 | * in1 nor in2. The original driver had an ugly workaround to get them | |
| 29 | * anyway (changing limits and watching alarms trigger and wear off). | |
| 30 | * We did not keep that part of the original driver in the Linux 2.6 | |
| 31 | * version, since it was making the driver significantly more complex | |
| 32 | * with no real benefit. | |
| 1da177e4 LT |
33 | */ |
| 34 | ||
| 1da177e4 LT |
35 | #include <linux/module.h> |
| 36 | #include <linux/init.h> | |
| 37 | #include <linux/slab.h> | |
| 38 | #include <linux/jiffies.h> | |
| 39 | #include <linux/i2c.h> | |
| 943b0830 | 40 | #include <linux/hwmon.h> |
| 28292e79 | 41 | #include <linux/hwmon-sysfs.h> |
| 943b0830 | 42 | #include <linux/err.h> |
| 9a61bf63 | 43 | #include <linux/mutex.h> |
| 87808be4 | 44 | #include <linux/sysfs.h> |
| 1da177e4 LT |
45 | |
| 46 | /* Addresses to scan */ | |
| 47 | static unsigned short normal_i2c[] = { 0x2c, 0x2d, I2C_CLIENT_END }; | |
| 1da177e4 LT |
48 | |
| 49 | /* Insmod parameters */ | |
| f4b50261 | 50 | I2C_CLIENT_INSMOD_2(gl518sm_r00, gl518sm_r80); |
| 1da177e4 LT |
51 | |
| 52 | /* Many GL518 constants specified below */ | |
| 53 | ||
| 54 | /* The GL518 registers */ | |
| 55 | #define GL518_REG_CHIP_ID 0x00 | |
| 56 | #define GL518_REG_REVISION 0x01 | |
| 57 | #define GL518_REG_VENDOR_ID 0x02 | |
| 58 | #define GL518_REG_CONF 0x03 | |
| 59 | #define GL518_REG_TEMP_IN 0x04 | |
| 60 | #define GL518_REG_TEMP_MAX 0x05 | |
| 61 | #define GL518_REG_TEMP_HYST 0x06 | |
| 62 | #define GL518_REG_FAN_COUNT 0x07 | |
| 63 | #define GL518_REG_FAN_LIMIT 0x08 | |
| 64 | #define GL518_REG_VIN1_LIMIT 0x09 | |
| 65 | #define GL518_REG_VIN2_LIMIT 0x0a | |
| 66 | #define GL518_REG_VIN3_LIMIT 0x0b | |
| 67 | #define GL518_REG_VDD_LIMIT 0x0c | |
| 68 | #define GL518_REG_VIN3 0x0d | |
| 69 | #define GL518_REG_MISC 0x0f | |
| 70 | #define GL518_REG_ALARM 0x10 | |
| 71 | #define GL518_REG_MASK 0x11 | |
| 72 | #define GL518_REG_INT 0x12 | |
| 73 | #define GL518_REG_VIN2 0x13 | |
| 74 | #define GL518_REG_VIN1 0x14 | |
| 75 | #define GL518_REG_VDD 0x15 | |
| 76 | ||
| 77 | ||
| 78 | /* | |
| 79 | * Conversions. Rounding and limit checking is only done on the TO_REG | |
| 80 | * variants. Note that you should be a bit careful with which arguments | |
| 81 | * these macros are called: arguments may be evaluated more than once. | |
| 82 | * Fixing this is just not worth it. | |
| 83 | */ | |
| 84 | ||
| 85 | #define RAW_FROM_REG(val) val | |
| 86 | ||
| 87 | #define BOOL_FROM_REG(val) ((val)?0:1) | |
| 88 | #define BOOL_TO_REG(val) ((val)?0:1) | |
| 89 | ||
| 90 | #define TEMP_TO_REG(val) (SENSORS_LIMIT(((((val)<0? \ | |
| 91 | (val)-500:(val)+500)/1000)+119),0,255)) | |
| 92 | #define TEMP_FROM_REG(val) (((val) - 119) * 1000) | |
| 93 | ||
| 94 | static inline u8 FAN_TO_REG(long rpm, int div) | |
| 95 | { | |
| 96 | long rpmdiv; | |
| 97 | if (rpm == 0) | |
| 98 | return 0; | |
| 99 | rpmdiv = SENSORS_LIMIT(rpm, 1, 1920000) * div; | |
| 100 | return SENSORS_LIMIT((960000 + rpmdiv / 2) / rpmdiv, 1, 255); | |
| 101 | } | |
| 102 | #define FAN_FROM_REG(val,div) ((val)==0 ? 0 : (960000/((val)*(div)))) | |
| 103 | ||
| 104 | #define IN_TO_REG(val) (SENSORS_LIMIT((((val)+9)/19),0,255)) | |
| 105 | #define IN_FROM_REG(val) ((val)*19) | |
| 106 | ||
| 107 | #define VDD_TO_REG(val) (SENSORS_LIMIT((((val)*4+47)/95),0,255)) | |
| 108 | #define VDD_FROM_REG(val) (((val)*95+2)/4) | |
| 109 | ||
| 110 | #define DIV_TO_REG(val) ((val)==4?2:(val)==2?1:(val)==1?0:3) | |
| 111 | #define DIV_FROM_REG(val) (1 << (val)) | |
| 112 | ||
| 113 | #define BEEP_MASK_TO_REG(val) ((val) & 0x7f & data->alarm_mask) | |
| 114 | #define BEEP_MASK_FROM_REG(val) ((val) & 0x7f) | |
| 115 | ||
| 116 | /* Each client has this additional data */ | |
| 117 | struct gl518_data { | |
| 118 | struct i2c_client client; | |
| 1beeffe4 | 119 | struct device *hwmon_dev; |
| 1da177e4 LT |
120 | enum chips type; |
| 121 | ||
| 9a61bf63 | 122 | struct mutex update_lock; |
| 1da177e4 LT |
123 | char valid; /* !=0 if following fields are valid */ |
| 124 | unsigned long last_updated; /* In jiffies */ | |
| 125 | ||
| 126 | u8 voltage_in[4]; /* Register values; [0] = VDD */ | |
| 127 | u8 voltage_min[4]; /* Register values; [0] = VDD */ | |
| 128 | u8 voltage_max[4]; /* Register values; [0] = VDD */ | |
| 1da177e4 LT |
129 | u8 fan_in[2]; |
| 130 | u8 fan_min[2]; | |
| 131 | u8 fan_div[2]; /* Register encoding, shifted right */ | |
| 132 | u8 fan_auto1; /* Boolean */ | |
| 133 | u8 temp_in; /* Register values */ | |
| 134 | u8 temp_max; /* Register values */ | |
| 135 | u8 temp_hyst; /* Register values */ | |
| 136 | u8 alarms; /* Register value */ | |
| a5955ed2 | 137 | u8 alarm_mask; |
| 1da177e4 LT |
138 | u8 beep_mask; /* Register value */ |
| 139 | u8 beep_enable; /* Boolean */ | |
| 140 | }; | |
| 141 | ||
| 142 | static int gl518_attach_adapter(struct i2c_adapter *adapter); | |
| 143 | static int gl518_detect(struct i2c_adapter *adapter, int address, int kind); | |
| 144 | static void gl518_init_client(struct i2c_client *client); | |
| 145 | static int gl518_detach_client(struct i2c_client *client); | |
| 146 | static int gl518_read_value(struct i2c_client *client, u8 reg); | |
| 147 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value); | |
| 148 | static struct gl518_data *gl518_update_device(struct device *dev); | |
| 149 | ||
| 150 | /* This is the driver that will be inserted */ | |
| 151 | static struct i2c_driver gl518_driver = { | |
| cdaf7934 | 152 | .driver = { |
| cdaf7934 LR |
153 | .name = "gl518sm", |
| 154 | }, | |
| 1da177e4 LT |
155 | .attach_adapter = gl518_attach_adapter, |
| 156 | .detach_client = gl518_detach_client, | |
| 157 | }; | |
| 158 | ||
| 159 | /* | |
| 160 | * Sysfs stuff | |
| 161 | */ | |
| 162 | ||
| 163 | #define show(type, suffix, value) \ | |
| 30f74292 | 164 | static ssize_t show_##suffix(struct device *dev, struct device_attribute *attr, char *buf) \ |
| 1da177e4 LT |
165 | { \ |
| 166 | struct gl518_data *data = gl518_update_device(dev); \ | |
| 167 | return sprintf(buf, "%d\n", type##_FROM_REG(data->value)); \ | |
| 168 | } | |
| 169 | ||
| 1da177e4 LT |
170 | show(TEMP, temp_input1, temp_in); |
| 171 | show(TEMP, temp_max1, temp_max); | |
| 172 | show(TEMP, temp_hyst1, temp_hyst); | |
| 173 | show(BOOL, fan_auto1, fan_auto1); | |
| 1da177e4 LT |
174 | show(VDD, in_input0, voltage_in[0]); |
| 175 | show(IN, in_input1, voltage_in[1]); | |
| 176 | show(IN, in_input2, voltage_in[2]); | |
| 177 | show(IN, in_input3, voltage_in[3]); | |
| 178 | show(VDD, in_min0, voltage_min[0]); | |
| 179 | show(IN, in_min1, voltage_min[1]); | |
| 180 | show(IN, in_min2, voltage_min[2]); | |
| 181 | show(IN, in_min3, voltage_min[3]); | |
| 182 | show(VDD, in_max0, voltage_max[0]); | |
| 183 | show(IN, in_max1, voltage_max[1]); | |
| 184 | show(IN, in_max2, voltage_max[2]); | |
| 185 | show(IN, in_max3, voltage_max[3]); | |
| 186 | show(RAW, alarms, alarms); | |
| 187 | show(BOOL, beep_enable, beep_enable); | |
| 188 | show(BEEP_MASK, beep_mask, beep_mask); | |
| 189 | ||
| 28292e79 JD |
190 | static ssize_t show_fan_input(struct device *dev, |
| 191 | struct device_attribute *attr, char *buf) | |
| 192 | { | |
| 193 | int nr = to_sensor_dev_attr(attr)->index; | |
| 194 | struct gl518_data *data = gl518_update_device(dev); | |
| 195 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_in[nr], | |
| 196 | DIV_FROM_REG(data->fan_div[nr]))); | |
| 197 | } | |
| 198 | ||
| 199 | static ssize_t show_fan_min(struct device *dev, | |
| 200 | struct device_attribute *attr, char *buf) | |
| 201 | { | |
| 202 | int nr = to_sensor_dev_attr(attr)->index; | |
| 203 | struct gl518_data *data = gl518_update_device(dev); | |
| 204 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[nr], | |
| 205 | DIV_FROM_REG(data->fan_div[nr]))); | |
| 206 | } | |
| 207 | ||
| 208 | static ssize_t show_fan_div(struct device *dev, | |
| 209 | struct device_attribute *attr, char *buf) | |
| 210 | { | |
| 211 | int nr = to_sensor_dev_attr(attr)->index; | |
| 212 | struct gl518_data *data = gl518_update_device(dev); | |
| 213 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr])); | |
| 214 | } | |
| 215 | ||
| 1da177e4 | 216 | #define set(type, suffix, value, reg) \ |
| 30f74292 | 217 | static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ |
| 1da177e4 LT |
218 | size_t count) \ |
| 219 | { \ | |
| 220 | struct i2c_client *client = to_i2c_client(dev); \ | |
| 221 | struct gl518_data *data = i2c_get_clientdata(client); \ | |
| 222 | long val = simple_strtol(buf, NULL, 10); \ | |
| 223 | \ | |
| 9a61bf63 | 224 | mutex_lock(&data->update_lock); \ |
| 1da177e4 LT |
225 | data->value = type##_TO_REG(val); \ |
| 226 | gl518_write_value(client, reg, data->value); \ | |
| 9a61bf63 | 227 | mutex_unlock(&data->update_lock); \ |
| 1da177e4 LT |
228 | return count; \ |
| 229 | } | |
| 230 | ||
| 231 | #define set_bits(type, suffix, value, reg, mask, shift) \ | |
| 30f74292 | 232 | static ssize_t set_##suffix(struct device *dev, struct device_attribute *attr, const char *buf, \ |
| 1da177e4 LT |
233 | size_t count) \ |
| 234 | { \ | |
| 235 | struct i2c_client *client = to_i2c_client(dev); \ | |
| 236 | struct gl518_data *data = i2c_get_clientdata(client); \ | |
| 237 | int regvalue; \ | |
| 238 | unsigned long val = simple_strtoul(buf, NULL, 10); \ | |
| 239 | \ | |
| 9a61bf63 | 240 | mutex_lock(&data->update_lock); \ |
| 1da177e4 LT |
241 | regvalue = gl518_read_value(client, reg); \ |
| 242 | data->value = type##_TO_REG(val); \ | |
| 243 | regvalue = (regvalue & ~mask) | (data->value << shift); \ | |
| 244 | gl518_write_value(client, reg, regvalue); \ | |
| 9a61bf63 | 245 | mutex_unlock(&data->update_lock); \ |
| 1da177e4 LT |
246 | return count; \ |
| 247 | } | |
| 248 | ||
| 249 | #define set_low(type, suffix, value, reg) \ | |
| 250 | set_bits(type, suffix, value, reg, 0x00ff, 0) | |
| 251 | #define set_high(type, suffix, value, reg) \ | |
| 252 | set_bits(type, suffix, value, reg, 0xff00, 8) | |
| 253 | ||
| 254 | set(TEMP, temp_max1, temp_max, GL518_REG_TEMP_MAX); | |
| 255 | set(TEMP, temp_hyst1, temp_hyst, GL518_REG_TEMP_HYST); | |
| 256 | set_bits(BOOL, fan_auto1, fan_auto1, GL518_REG_MISC, 0x08, 3); | |
| 1da177e4 LT |
257 | set_low(VDD, in_min0, voltage_min[0], GL518_REG_VDD_LIMIT); |
| 258 | set_low(IN, in_min1, voltage_min[1], GL518_REG_VIN1_LIMIT); | |
| 259 | set_low(IN, in_min2, voltage_min[2], GL518_REG_VIN2_LIMIT); | |
| 260 | set_low(IN, in_min3, voltage_min[3], GL518_REG_VIN3_LIMIT); | |
| 261 | set_high(VDD, in_max0, voltage_max[0], GL518_REG_VDD_LIMIT); | |
| 262 | set_high(IN, in_max1, voltage_max[1], GL518_REG_VIN1_LIMIT); | |
| 263 | set_high(IN, in_max2, voltage_max[2], GL518_REG_VIN2_LIMIT); | |
| 264 | set_high(IN, in_max3, voltage_max[3], GL518_REG_VIN3_LIMIT); | |
| 265 | set_bits(BOOL, beep_enable, beep_enable, GL518_REG_CONF, 0x04, 2); | |
| 266 | set(BEEP_MASK, beep_mask, beep_mask, GL518_REG_ALARM); | |
| 267 | ||
| 28292e79 JD |
268 | static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, |
| 269 | const char *buf, size_t count) | |
| 1da177e4 LT |
270 | { |
| 271 | struct i2c_client *client = to_i2c_client(dev); | |
| 272 | struct gl518_data *data = i2c_get_clientdata(client); | |
| 28292e79 | 273 | int nr = to_sensor_dev_attr(attr)->index; |
| 1da177e4 LT |
274 | int regvalue; |
| 275 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
| 276 | ||
| 9a61bf63 | 277 | mutex_lock(&data->update_lock); |
| 1da177e4 | 278 | regvalue = gl518_read_value(client, GL518_REG_FAN_LIMIT); |
| 28292e79 JD |
279 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
| 280 | regvalue = (regvalue & (0xff << (8 * nr))) | |
| 281 | | (data->fan_min[nr] << (8 * (1 - nr))); | |
| 1da177e4 LT |
282 | gl518_write_value(client, GL518_REG_FAN_LIMIT, regvalue); |
| 283 | ||
| 284 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
| 28292e79 JD |
285 | if (data->fan_min[nr] == 0) |
| 286 | data->alarm_mask &= ~(0x20 << nr); | |
| 1da177e4 | 287 | else |
| 28292e79 | 288 | data->alarm_mask |= (0x20 << nr); |
| 1da177e4 LT |
289 | data->beep_mask &= data->alarm_mask; |
| 290 | gl518_write_value(client, GL518_REG_ALARM, data->beep_mask); | |
| 291 | ||
| 9a61bf63 | 292 | mutex_unlock(&data->update_lock); |
| 1da177e4 LT |
293 | return count; |
| 294 | } | |
| 295 | ||
| 28292e79 JD |
296 | static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, |
| 297 | const char *buf, size_t count) | |
| 1da177e4 LT |
298 | { |
| 299 | struct i2c_client *client = to_i2c_client(dev); | |
| 300 | struct gl518_data *data = i2c_get_clientdata(client); | |
| 28292e79 | 301 | int nr = to_sensor_dev_attr(attr)->index; |
| 1da177e4 LT |
302 | int regvalue; |
| 303 | unsigned long val = simple_strtoul(buf, NULL, 10); | |
| 304 | ||
| 9a61bf63 | 305 | mutex_lock(&data->update_lock); |
| 28292e79 JD |
306 | regvalue = gl518_read_value(client, GL518_REG_MISC); |
| 307 | data->fan_div[nr] = DIV_TO_REG(val); | |
| 308 | regvalue = (regvalue & ~(0xc0 >> (2 * nr))) | |
| 309 | | (data->fan_div[nr] << (6 - 2 * nr)); | |
| 310 | gl518_write_value(client, GL518_REG_MISC, regvalue); | |
| 9a61bf63 | 311 | mutex_unlock(&data->update_lock); |
| 1da177e4 LT |
312 | return count; |
| 313 | } | |
| 314 | ||
| 315 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp_input1, NULL); | |
| 316 | static DEVICE_ATTR(temp1_max, S_IWUSR|S_IRUGO, show_temp_max1, set_temp_max1); | |
| 317 | static DEVICE_ATTR(temp1_max_hyst, S_IWUSR|S_IRUGO, | |
| 318 | show_temp_hyst1, set_temp_hyst1); | |
| 319 | static DEVICE_ATTR(fan1_auto, S_IWUSR|S_IRUGO, show_fan_auto1, set_fan_auto1); | |
| 28292e79 JD |
320 | static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan_input, NULL, 0); |
| 321 | static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan_input, NULL, 1); | |
| 322 | static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR|S_IRUGO, | |
| 323 | show_fan_min, set_fan_min, 0); | |
| 324 | static SENSOR_DEVICE_ATTR(fan2_min, S_IWUSR|S_IRUGO, | |
| 325 | show_fan_min, set_fan_min, 1); | |
| 326 | static SENSOR_DEVICE_ATTR(fan1_div, S_IWUSR|S_IRUGO, | |
| 327 | show_fan_div, set_fan_div, 0); | |
| 328 | static SENSOR_DEVICE_ATTR(fan2_div, S_IWUSR|S_IRUGO, | |
| 329 | show_fan_div, set_fan_div, 1); | |
| 1da177e4 LT |
330 | static DEVICE_ATTR(in0_input, S_IRUGO, show_in_input0, NULL); |
| 331 | static DEVICE_ATTR(in1_input, S_IRUGO, show_in_input1, NULL); | |
| 332 | static DEVICE_ATTR(in2_input, S_IRUGO, show_in_input2, NULL); | |
| 333 | static DEVICE_ATTR(in3_input, S_IRUGO, show_in_input3, NULL); | |
| 334 | static DEVICE_ATTR(in0_min, S_IWUSR|S_IRUGO, show_in_min0, set_in_min0); | |
| 335 | static DEVICE_ATTR(in1_min, S_IWUSR|S_IRUGO, show_in_min1, set_in_min1); | |
| 336 | static DEVICE_ATTR(in2_min, S_IWUSR|S_IRUGO, show_in_min2, set_in_min2); | |
| 337 | static DEVICE_ATTR(in3_min, S_IWUSR|S_IRUGO, show_in_min3, set_in_min3); | |
| 338 | static DEVICE_ATTR(in0_max, S_IWUSR|S_IRUGO, show_in_max0, set_in_max0); | |
| 339 | static DEVICE_ATTR(in1_max, S_IWUSR|S_IRUGO, show_in_max1, set_in_max1); | |
| 340 | static DEVICE_ATTR(in2_max, S_IWUSR|S_IRUGO, show_in_max2, set_in_max2); | |
| 341 | static DEVICE_ATTR(in3_max, S_IWUSR|S_IRUGO, show_in_max3, set_in_max3); | |
| 342 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); | |
| 343 | static DEVICE_ATTR(beep_enable, S_IWUSR|S_IRUGO, | |
| 344 | show_beep_enable, set_beep_enable); | |
| 345 | static DEVICE_ATTR(beep_mask, S_IWUSR|S_IRUGO, | |
| 346 | show_beep_mask, set_beep_mask); | |
| 347 | ||
| 87808be4 | 348 | static struct attribute *gl518_attributes[] = { |
| 87808be4 JD |
349 | &dev_attr_in3_input.attr, |
| 350 | &dev_attr_in0_min.attr, | |
| 351 | &dev_attr_in1_min.attr, | |
| 352 | &dev_attr_in2_min.attr, | |
| 353 | &dev_attr_in3_min.attr, | |
| 354 | &dev_attr_in0_max.attr, | |
| 355 | &dev_attr_in1_max.attr, | |
| 356 | &dev_attr_in2_max.attr, | |
| 357 | &dev_attr_in3_max.attr, | |
| 358 | ||
| 359 | &dev_attr_fan1_auto.attr, | |
| 28292e79 JD |
360 | &sensor_dev_attr_fan1_input.dev_attr.attr, |
| 361 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
| 362 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
| 363 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
| 364 | &sensor_dev_attr_fan1_div.dev_attr.attr, | |
| 365 | &sensor_dev_attr_fan2_div.dev_attr.attr, | |
| 87808be4 JD |
366 | |
| 367 | &dev_attr_temp1_input.attr, | |
| 368 | &dev_attr_temp1_max.attr, | |
| 369 | &dev_attr_temp1_max_hyst.attr, | |
| 370 | ||
| 371 | &dev_attr_alarms.attr, | |
| 372 | &dev_attr_beep_enable.attr, | |
| 373 | &dev_attr_beep_mask.attr, | |
| 374 | NULL | |
| 375 | }; | |
| 376 | ||
| 377 | static const struct attribute_group gl518_group = { | |
| 378 | .attrs = gl518_attributes, | |
| 379 | }; | |
| 380 | ||
| 5314f5c1 JD |
381 | static struct attribute *gl518_attributes_r80[] = { |
| 382 | &dev_attr_in0_input.attr, | |
| 383 | &dev_attr_in1_input.attr, | |
| 384 | &dev_attr_in2_input.attr, | |
| 385 | NULL | |
| 386 | }; | |
| 387 | ||
| 388 | static const struct attribute_group gl518_group_r80 = { | |
| 389 | .attrs = gl518_attributes_r80, | |
| 390 | }; | |
| 391 | ||
| 1da177e4 LT |
392 | /* |
| 393 | * Real code | |
| 394 | */ | |
| 395 | ||
| 396 | static int gl518_attach_adapter(struct i2c_adapter *adapter) | |
| 397 | { | |
| 398 | if (!(adapter->class & I2C_CLASS_HWMON)) | |
| 399 | return 0; | |
| 2ed2dc3c | 400 | return i2c_probe(adapter, &addr_data, gl518_detect); |
| 1da177e4 LT |
401 | } |
| 402 | ||
| 403 | static int gl518_detect(struct i2c_adapter *adapter, int address, int kind) | |
| 404 | { | |
| 405 | int i; | |
| a5955ed2 | 406 | struct i2c_client *client; |
| 1da177e4 LT |
407 | struct gl518_data *data; |
| 408 | int err = 0; | |
| 409 | ||
| 410 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA | | |
| 411 | I2C_FUNC_SMBUS_WORD_DATA)) | |
| 412 | goto exit; | |
| 413 | ||
| 414 | /* OK. For now, we presume we have a valid client. We now create the | |
| 415 | client structure, even though we cannot fill it completely yet. | |
| 416 | But it allows us to access gl518_{read,write}_value. */ | |
| 417 | ||
| ba9c2e8d | 418 | if (!(data = kzalloc(sizeof(struct gl518_data), GFP_KERNEL))) { |
| 1da177e4 LT |
419 | err = -ENOMEM; |
| 420 | goto exit; | |
| 421 | } | |
| 1da177e4 | 422 | |
| a5955ed2 JD |
423 | client = &data->client; |
| 424 | i2c_set_clientdata(client, data); | |
| 1da177e4 | 425 | |
| a5955ed2 JD |
426 | client->addr = address; |
| 427 | client->adapter = adapter; | |
| 428 | client->driver = &gl518_driver; | |
| 1da177e4 LT |
429 | |
| 430 | /* Now, we do the remaining detection. */ | |
| 431 | ||
| 432 | if (kind < 0) { | |
| a5955ed2 JD |
433 | if ((gl518_read_value(client, GL518_REG_CHIP_ID) != 0x80) |
| 434 | || (gl518_read_value(client, GL518_REG_CONF) & 0x80)) | |
| 1da177e4 LT |
435 | goto exit_free; |
| 436 | } | |
| 437 | ||
| 438 | /* Determine the chip type. */ | |
| 439 | if (kind <= 0) { | |
| a5955ed2 | 440 | i = gl518_read_value(client, GL518_REG_REVISION); |
| 1da177e4 LT |
441 | if (i == 0x00) { |
| 442 | kind = gl518sm_r00; | |
| 443 | } else if (i == 0x80) { | |
| 444 | kind = gl518sm_r80; | |
| 445 | } else { | |
| 446 | if (kind <= 0) | |
| 447 | dev_info(&adapter->dev, | |
| 448 | "Ignoring 'force' parameter for unknown " | |
| 449 | "chip at adapter %d, address 0x%02x\n", | |
| 450 | i2c_adapter_id(adapter), address); | |
| 451 | goto exit_free; | |
| 452 | } | |
| 453 | } | |
| 454 | ||
| 455 | /* Fill in the remaining client fields */ | |
| a5955ed2 | 456 | strlcpy(client->name, "gl518sm", I2C_NAME_SIZE); |
| 1da177e4 | 457 | data->type = kind; |
| 9a61bf63 | 458 | mutex_init(&data->update_lock); |
| 1da177e4 LT |
459 | |
| 460 | /* Tell the I2C layer a new client has arrived */ | |
| a5955ed2 | 461 | if ((err = i2c_attach_client(client))) |
| 1da177e4 LT |
462 | goto exit_free; |
| 463 | ||
| 464 | /* Initialize the GL518SM chip */ | |
| 465 | data->alarm_mask = 0xff; | |
| a5955ed2 | 466 | gl518_init_client(client); |
| 1da177e4 LT |
467 | |
| 468 | /* Register sysfs hooks */ | |
| a5955ed2 | 469 | if ((err = sysfs_create_group(&client->dev.kobj, &gl518_group))) |
| 87808be4 | 470 | goto exit_detach; |
| 5314f5c1 JD |
471 | if (data->type == gl518sm_r80) |
| 472 | if ((err = sysfs_create_group(&client->dev.kobj, | |
| 473 | &gl518_group_r80))) | |
| 474 | goto exit_remove_files; | |
| 87808be4 | 475 | |
| a5955ed2 | 476 | data->hwmon_dev = hwmon_device_register(&client->dev); |
| 1beeffe4 TJ |
477 | if (IS_ERR(data->hwmon_dev)) { |
| 478 | err = PTR_ERR(data->hwmon_dev); | |
| 87808be4 | 479 | goto exit_remove_files; |
| 943b0830 MH |
480 | } |
| 481 | ||
| 1da177e4 LT |
482 | return 0; |
| 483 | ||
| 87808be4 | 484 | exit_remove_files: |
| a5955ed2 | 485 | sysfs_remove_group(&client->dev.kobj, &gl518_group); |
| 5314f5c1 JD |
486 | if (data->type == gl518sm_r80) |
| 487 | sysfs_remove_group(&client->dev.kobj, &gl518_group_r80); | |
| 943b0830 | 488 | exit_detach: |
| a5955ed2 | 489 | i2c_detach_client(client); |
| 1da177e4 LT |
490 | exit_free: |
| 491 | kfree(data); | |
| 492 | exit: | |
| 493 | return err; | |
| 494 | } | |
| 495 | ||
| 496 | ||
| 497 | /* Called when we have found a new GL518SM. | |
| 498 | Note that we preserve D4:NoFan2 and D2:beep_enable. */ | |
| 499 | static void gl518_init_client(struct i2c_client *client) | |
| 500 | { | |
| 501 | /* Make sure we leave D7:Reset untouched */ | |
| 502 | u8 regvalue = gl518_read_value(client, GL518_REG_CONF) & 0x7f; | |
| 503 | ||
| 504 | /* Comparator mode (D3=0), standby mode (D6=0) */ | |
| 505 | gl518_write_value(client, GL518_REG_CONF, (regvalue &= 0x37)); | |
| 506 | ||
| 507 | /* Never interrupts */ | |
| 508 | gl518_write_value(client, GL518_REG_MASK, 0x00); | |
| 509 | ||
| 510 | /* Clear status register (D5=1), start (D6=1) */ | |
| 511 | gl518_write_value(client, GL518_REG_CONF, 0x20 | regvalue); | |
| 512 | gl518_write_value(client, GL518_REG_CONF, 0x40 | regvalue); | |
| 513 | } | |
| 514 | ||
| 515 | static int gl518_detach_client(struct i2c_client *client) | |
| 516 | { | |
| 943b0830 | 517 | struct gl518_data *data = i2c_get_clientdata(client); |
| 1da177e4 LT |
518 | int err; |
| 519 | ||
| 1beeffe4 | 520 | hwmon_device_unregister(data->hwmon_dev); |
| 87808be4 | 521 | sysfs_remove_group(&client->dev.kobj, &gl518_group); |
| 5314f5c1 JD |
522 | if (data->type == gl518sm_r80) |
| 523 | sysfs_remove_group(&client->dev.kobj, &gl518_group_r80); | |
| 943b0830 | 524 | |
| 7bef5594 | 525 | if ((err = i2c_detach_client(client))) |
| 1da177e4 | 526 | return err; |
| 1da177e4 | 527 | |
| 943b0830 | 528 | kfree(data); |
| 1da177e4 LT |
529 | return 0; |
| 530 | } | |
| 531 | ||
| a5955ed2 | 532 | /* Registers 0x07 to 0x0c are word-sized, others are byte-sized |
| 1da177e4 | 533 | GL518 uses a high-byte first convention, which is exactly opposite to |
| a5955ed2 | 534 | the SMBus standard. */ |
| 1da177e4 LT |
535 | static int gl518_read_value(struct i2c_client *client, u8 reg) |
| 536 | { | |
| 537 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
| 538 | return swab16(i2c_smbus_read_word_data(client, reg)); | |
| 539 | else | |
| 540 | return i2c_smbus_read_byte_data(client, reg); | |
| 541 | } | |
| 542 | ||
| 1da177e4 LT |
543 | static int gl518_write_value(struct i2c_client *client, u8 reg, u16 value) |
| 544 | { | |
| 545 | if ((reg >= 0x07) && (reg <= 0x0c)) | |
| 546 | return i2c_smbus_write_word_data(client, reg, swab16(value)); | |
| 547 | else | |
| 548 | return i2c_smbus_write_byte_data(client, reg, value); | |
| 549 | } | |
| 550 | ||
| 551 | static struct gl518_data *gl518_update_device(struct device *dev) | |
| 552 | { | |
| 553 | struct i2c_client *client = to_i2c_client(dev); | |
| 554 | struct gl518_data *data = i2c_get_clientdata(client); | |
| 555 | int val; | |
| 556 | ||
| 9a61bf63 | 557 | mutex_lock(&data->update_lock); |
| 1da177e4 LT |
558 | |
| 559 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | |
| 560 | || !data->valid) { | |
| 561 | dev_dbg(&client->dev, "Starting gl518 update\n"); | |
| 562 | ||
| 563 | data->alarms = gl518_read_value(client, GL518_REG_INT); | |
| 564 | data->beep_mask = gl518_read_value(client, GL518_REG_ALARM); | |
| 565 | ||
| 566 | val = gl518_read_value(client, GL518_REG_VDD_LIMIT); | |
| 567 | data->voltage_min[0] = val & 0xff; | |
| 568 | data->voltage_max[0] = (val >> 8) & 0xff; | |
| 569 | val = gl518_read_value(client, GL518_REG_VIN1_LIMIT); | |
| 570 | data->voltage_min[1] = val & 0xff; | |
| 571 | data->voltage_max[1] = (val >> 8) & 0xff; | |
| 572 | val = gl518_read_value(client, GL518_REG_VIN2_LIMIT); | |
| 573 | data->voltage_min[2] = val & 0xff; | |
| 574 | data->voltage_max[2] = (val >> 8) & 0xff; | |
| 575 | val = gl518_read_value(client, GL518_REG_VIN3_LIMIT); | |
| 576 | data->voltage_min[3] = val & 0xff; | |
| 577 | data->voltage_max[3] = (val >> 8) & 0xff; | |
| 578 | ||
| 579 | val = gl518_read_value(client, GL518_REG_FAN_COUNT); | |
| 580 | data->fan_in[0] = (val >> 8) & 0xff; | |
| 581 | data->fan_in[1] = val & 0xff; | |
| 582 | ||
| 583 | val = gl518_read_value(client, GL518_REG_FAN_LIMIT); | |
| 584 | data->fan_min[0] = (val >> 8) & 0xff; | |
| 585 | data->fan_min[1] = val & 0xff; | |
| 586 | ||
| 587 | data->temp_in = gl518_read_value(client, GL518_REG_TEMP_IN); | |
| 588 | data->temp_max = | |
| 589 | gl518_read_value(client, GL518_REG_TEMP_MAX); | |
| 590 | data->temp_hyst = | |
| 591 | gl518_read_value(client, GL518_REG_TEMP_HYST); | |
| 592 | ||
| 593 | val = gl518_read_value(client, GL518_REG_MISC); | |
| 594 | data->fan_div[0] = (val >> 6) & 0x03; | |
| 595 | data->fan_div[1] = (val >> 4) & 0x03; | |
| 596 | data->fan_auto1 = (val >> 3) & 0x01; | |
| 597 | ||
| 598 | data->alarms &= data->alarm_mask; | |
| 599 | ||
| 600 | val = gl518_read_value(client, GL518_REG_CONF); | |
| 601 | data->beep_enable = (val >> 2) & 1; | |
| 602 | ||
| 603 | if (data->type != gl518sm_r00) { | |
| 604 | data->voltage_in[0] = | |
| 605 | gl518_read_value(client, GL518_REG_VDD); | |
| 606 | data->voltage_in[1] = | |
| 607 | gl518_read_value(client, GL518_REG_VIN1); | |
| 608 | data->voltage_in[2] = | |
| 609 | gl518_read_value(client, GL518_REG_VIN2); | |
| 610 | } | |
| 611 | data->voltage_in[3] = | |
| 612 | gl518_read_value(client, GL518_REG_VIN3); | |
| 613 | ||
| 614 | data->last_updated = jiffies; | |
| 615 | data->valid = 1; | |
| 616 | } | |
| 617 | ||
| 9a61bf63 | 618 | mutex_unlock(&data->update_lock); |
| 1da177e4 LT |
619 | |
| 620 | return data; | |
| 621 | } | |
| 622 | ||
| 623 | static int __init sensors_gl518sm_init(void) | |
| 624 | { | |
| 625 | return i2c_add_driver(&gl518_driver); | |
| 626 | } | |
| 627 | ||
| 628 | static void __exit sensors_gl518sm_exit(void) | |
| 629 | { | |
| 630 | i2c_del_driver(&gl518_driver); | |
| 631 | } | |
| 632 | ||
| 633 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
| 634 | "Kyosti Malkki <kmalkki@cc.hut.fi> and " | |
| 635 | "Hong-Gunn Chew <hglinux@gunnet.org>"); | |
| 636 | MODULE_DESCRIPTION("GL518SM driver"); | |
| 637 | MODULE_LICENSE("GPL"); | |
| 638 | ||
| 639 | module_init(sensors_gl518sm_init); | |
| 640 | module_exit(sensors_gl518sm_exit); |