Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | sis5595.c - Part of lm_sensors, Linux kernel modules |
| 3 | for hardware monitoring |
| 4 | |
| 5 | Copyright (C) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, |
| 6 | Kyösti Mälkki <kmalkki@cc.hut.fi>, and |
| 7 | Mark D. Studebaker <mdsxyz123@yahoo.com> |
| 8 | Ported to Linux 2.6 by Aurelien Jarno <aurelien@aurel32.net> with |
| 9 | the help of Jean Delvare <khali@linux-fr.org> |
| 10 | |
| 11 | This program is free software; you can redistribute it and/or modify |
| 12 | it under the terms of the GNU General Public License as published by |
| 13 | the Free Software Foundation; either version 2 of the License, or |
| 14 | (at your option) any later version. |
| 15 | |
| 16 | This program is distributed in the hope that it will be useful, |
| 17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | GNU General Public License for more details. |
| 20 | |
| 21 | You should have received a copy of the GNU General Public License |
| 22 | along with this program; if not, write to the Free Software |
| 23 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | SiS southbridge has a LM78-like chip integrated on the same IC. |
| 28 | This driver is a customized copy of lm78.c |
| 29 | |
| 30 | Supports following revisions: |
| 31 | Version PCI ID PCI Revision |
| 32 | 1 1039/0008 AF or less |
| 33 | 2 1039/0008 B0 or greater |
| 34 | |
| 35 | Note: these chips contain a 0008 device which is incompatible with the |
| 36 | 5595. We recognize these by the presence of the listed |
| 37 | "blacklist" PCI ID and refuse to load. |
| 38 | |
| 39 | NOT SUPPORTED PCI ID BLACKLIST PCI ID |
| 40 | 540 0008 0540 |
| 41 | 550 0008 0550 |
| 42 | 5513 0008 5511 |
| 43 | 5581 0008 5597 |
| 44 | 5582 0008 5597 |
| 45 | 5597 0008 5597 |
| 46 | 5598 0008 5597/5598 |
| 47 | 630 0008 0630 |
| 48 | 645 0008 0645 |
| 49 | 730 0008 0730 |
| 50 | 735 0008 0735 |
| 51 | */ |
| 52 | |
| 53 | #include <linux/module.h> |
| 54 | #include <linux/slab.h> |
| 55 | #include <linux/ioport.h> |
| 56 | #include <linux/pci.h> |
| 57 | #include <linux/i2c.h> |
Jean Delvare | fde0950 | 2005-07-19 23:51:07 +0200 | [diff] [blame] | 58 | #include <linux/i2c-isa.h> |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 59 | #include <linux/hwmon.h> |
| 60 | #include <linux/err.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #include <linux/init.h> |
Dominik Hackl | ff32409 | 2005-05-16 18:12:18 +0200 | [diff] [blame] | 62 | #include <linux/jiffies.h> |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 63 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #include <asm/io.h> |
| 65 | |
| 66 | |
| 67 | /* If force_addr is set to anything different from 0, we forcibly enable |
| 68 | the device at the given address. */ |
| 69 | static u16 force_addr; |
| 70 | module_param(force_addr, ushort, 0); |
| 71 | MODULE_PARM_DESC(force_addr, |
| 72 | "Initialize the base address of the sensors"); |
| 73 | |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 74 | /* Device address |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | Note that we can't determine the ISA address until we have initialized |
| 76 | our module */ |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 77 | static unsigned short address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
| 79 | /* Many SIS5595 constants specified below */ |
| 80 | |
| 81 | /* Length of ISA address segment */ |
| 82 | #define SIS5595_EXTENT 8 |
| 83 | /* PCI Config Registers */ |
| 84 | #define SIS5595_REVISION_REG 0x08 |
| 85 | #define SIS5595_BASE_REG 0x68 |
| 86 | #define SIS5595_PIN_REG 0x7A |
| 87 | #define SIS5595_ENABLE_REG 0x7B |
| 88 | |
| 89 | /* Where are the ISA address/data registers relative to the base address */ |
| 90 | #define SIS5595_ADDR_REG_OFFSET 5 |
| 91 | #define SIS5595_DATA_REG_OFFSET 6 |
| 92 | |
| 93 | /* The SIS5595 registers */ |
| 94 | #define SIS5595_REG_IN_MAX(nr) (0x2b + (nr) * 2) |
| 95 | #define SIS5595_REG_IN_MIN(nr) (0x2c + (nr) * 2) |
| 96 | #define SIS5595_REG_IN(nr) (0x20 + (nr)) |
| 97 | |
| 98 | #define SIS5595_REG_FAN_MIN(nr) (0x3b + (nr)) |
| 99 | #define SIS5595_REG_FAN(nr) (0x28 + (nr)) |
| 100 | |
| 101 | /* On the first version of the chip, the temp registers are separate. |
| 102 | On the second version, |
| 103 | TEMP pin is shared with IN4, configured in PCI register 0x7A. |
| 104 | The registers are the same as well. |
| 105 | OVER and HYST are really MAX and MIN. */ |
| 106 | |
| 107 | #define REV2MIN 0xb0 |
| 108 | #define SIS5595_REG_TEMP (( data->revision) >= REV2MIN) ? \ |
| 109 | SIS5595_REG_IN(4) : 0x27 |
| 110 | #define SIS5595_REG_TEMP_OVER (( data->revision) >= REV2MIN) ? \ |
| 111 | SIS5595_REG_IN_MAX(4) : 0x39 |
| 112 | #define SIS5595_REG_TEMP_HYST (( data->revision) >= REV2MIN) ? \ |
| 113 | SIS5595_REG_IN_MIN(4) : 0x3a |
| 114 | |
| 115 | #define SIS5595_REG_CONFIG 0x40 |
| 116 | #define SIS5595_REG_ALARM1 0x41 |
| 117 | #define SIS5595_REG_ALARM2 0x42 |
| 118 | #define SIS5595_REG_FANDIV 0x47 |
| 119 | |
| 120 | /* Conversions. Limit checking is only done on the TO_REG |
| 121 | variants. */ |
| 122 | |
| 123 | /* IN: mV, (0V to 4.08V) |
| 124 | REG: 16mV/bit */ |
| 125 | static inline u8 IN_TO_REG(unsigned long val) |
| 126 | { |
| 127 | unsigned long nval = SENSORS_LIMIT(val, 0, 4080); |
| 128 | return (nval + 8) / 16; |
| 129 | } |
| 130 | #define IN_FROM_REG(val) ((val) * 16) |
| 131 | |
| 132 | static inline u8 FAN_TO_REG(long rpm, int div) |
| 133 | { |
| 134 | if (rpm <= 0) |
| 135 | return 255; |
| 136 | return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, 254); |
| 137 | } |
| 138 | |
| 139 | static inline int FAN_FROM_REG(u8 val, int div) |
| 140 | { |
| 141 | return val==0 ? -1 : val==255 ? 0 : 1350000/(val*div); |
| 142 | } |
| 143 | |
| 144 | /* TEMP: mC (-54.12C to +157.53C) |
| 145 | REG: 0.83C/bit + 52.12, two's complement */ |
| 146 | static inline int TEMP_FROM_REG(s8 val) |
| 147 | { |
| 148 | return val * 830 + 52120; |
| 149 | } |
| 150 | static inline s8 TEMP_TO_REG(int val) |
| 151 | { |
| 152 | int nval = SENSORS_LIMIT(val, -54120, 157530) ; |
| 153 | return nval<0 ? (nval-5212-415)/830 : (nval-5212+415)/830; |
| 154 | } |
| 155 | |
| 156 | /* FAN DIV: 1, 2, 4, or 8 (defaults to 2) |
| 157 | REG: 0, 1, 2, or 3 (respectively) (defaults to 1) */ |
| 158 | static inline u8 DIV_TO_REG(int val) |
| 159 | { |
| 160 | return val==8 ? 3 : val==4 ? 2 : val==1 ? 0 : 1; |
| 161 | } |
| 162 | #define DIV_FROM_REG(val) (1 << (val)) |
| 163 | |
| 164 | /* For the SIS5595, we need to keep some data in memory. That |
| 165 | data is pointed to by sis5595_list[NR]->data. The structure itself is |
| 166 | dynamically allocated, at the time when the new sis5595 client is |
| 167 | allocated. */ |
| 168 | struct sis5595_data { |
| 169 | struct i2c_client client; |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 170 | struct class_device *class_dev; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 171 | struct mutex lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 173 | struct mutex update_lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | char valid; /* !=0 if following fields are valid */ |
| 175 | unsigned long last_updated; /* In jiffies */ |
| 176 | char maxins; /* == 3 if temp enabled, otherwise == 4 */ |
| 177 | u8 revision; /* Reg. value */ |
| 178 | |
| 179 | u8 in[5]; /* Register value */ |
| 180 | u8 in_max[5]; /* Register value */ |
| 181 | u8 in_min[5]; /* Register value */ |
| 182 | u8 fan[2]; /* Register value */ |
| 183 | u8 fan_min[2]; /* Register value */ |
| 184 | s8 temp; /* Register value */ |
| 185 | s8 temp_over; /* Register value */ |
| 186 | s8 temp_hyst; /* Register value */ |
| 187 | u8 fan_div[2]; /* Register encoding, shifted right */ |
| 188 | u16 alarms; /* Register encoding, combined */ |
| 189 | }; |
| 190 | |
| 191 | static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */ |
| 192 | |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 193 | static int sis5595_detect(struct i2c_adapter *adapter); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | static int sis5595_detach_client(struct i2c_client *client); |
| 195 | |
Darren Jenkins | f6c27fc | 2006-02-27 23:14:58 +0100 | [diff] [blame] | 196 | static int sis5595_read_value(struct i2c_client *client, u8 reg); |
| 197 | static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | static struct sis5595_data *sis5595_update_device(struct device *dev); |
| 199 | static void sis5595_init_client(struct i2c_client *client); |
| 200 | |
| 201 | static struct i2c_driver sis5595_driver = { |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 202 | .driver = { |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 203 | .name = "sis5595", |
| 204 | }, |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 205 | .attach_adapter = sis5595_detect, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | .detach_client = sis5595_detach_client, |
| 207 | }; |
| 208 | |
| 209 | /* 4 Voltages */ |
| 210 | static ssize_t show_in(struct device *dev, char *buf, int nr) |
| 211 | { |
| 212 | struct sis5595_data *data = sis5595_update_device(dev); |
| 213 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr])); |
| 214 | } |
| 215 | |
| 216 | static ssize_t show_in_min(struct device *dev, char *buf, int nr) |
| 217 | { |
| 218 | struct sis5595_data *data = sis5595_update_device(dev); |
| 219 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr])); |
| 220 | } |
| 221 | |
| 222 | static ssize_t show_in_max(struct device *dev, char *buf, int nr) |
| 223 | { |
| 224 | struct sis5595_data *data = sis5595_update_device(dev); |
| 225 | return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr])); |
| 226 | } |
| 227 | |
| 228 | static ssize_t set_in_min(struct device *dev, const char *buf, |
| 229 | size_t count, int nr) |
| 230 | { |
| 231 | struct i2c_client *client = to_i2c_client(dev); |
| 232 | struct sis5595_data *data = i2c_get_clientdata(client); |
| 233 | unsigned long val = simple_strtoul(buf, NULL, 10); |
| 234 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 235 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | data->in_min[nr] = IN_TO_REG(val); |
| 237 | sis5595_write_value(client, SIS5595_REG_IN_MIN(nr), data->in_min[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 238 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | return count; |
| 240 | } |
| 241 | |
| 242 | static ssize_t set_in_max(struct device *dev, const char *buf, |
| 243 | size_t count, int nr) |
| 244 | { |
| 245 | struct i2c_client *client = to_i2c_client(dev); |
| 246 | struct sis5595_data *data = i2c_get_clientdata(client); |
| 247 | unsigned long val = simple_strtoul(buf, NULL, 10); |
| 248 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 249 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | data->in_max[nr] = IN_TO_REG(val); |
| 251 | sis5595_write_value(client, SIS5595_REG_IN_MAX(nr), data->in_max[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 252 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | return count; |
| 254 | } |
| 255 | |
| 256 | #define show_in_offset(offset) \ |
| 257 | static ssize_t \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 258 | show_in##offset (struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | { \ |
| 260 | return show_in(dev, buf, offset); \ |
| 261 | } \ |
| 262 | static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
| 263 | show_in##offset, NULL); \ |
| 264 | static ssize_t \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 265 | show_in##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | { \ |
| 267 | return show_in_min(dev, buf, offset); \ |
| 268 | } \ |
| 269 | static ssize_t \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 270 | show_in##offset##_max (struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | { \ |
| 272 | return show_in_max(dev, buf, offset); \ |
| 273 | } \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 274 | static ssize_t set_in##offset##_min (struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | const char *buf, size_t count) \ |
| 276 | { \ |
| 277 | return set_in_min(dev, buf, count, offset); \ |
| 278 | } \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 279 | static ssize_t set_in##offset##_max (struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | const char *buf, size_t count) \ |
| 281 | { \ |
| 282 | return set_in_max(dev, buf, count, offset); \ |
| 283 | } \ |
| 284 | static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
| 285 | show_in##offset##_min, set_in##offset##_min); \ |
| 286 | static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
| 287 | show_in##offset##_max, set_in##offset##_max); |
| 288 | |
| 289 | show_in_offset(0); |
| 290 | show_in_offset(1); |
| 291 | show_in_offset(2); |
| 292 | show_in_offset(3); |
| 293 | show_in_offset(4); |
| 294 | |
| 295 | /* Temperature */ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 296 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | { |
| 298 | struct sis5595_data *data = sis5595_update_device(dev); |
| 299 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp)); |
| 300 | } |
| 301 | |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 302 | static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | { |
| 304 | struct sis5595_data *data = sis5595_update_device(dev); |
| 305 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_over)); |
| 306 | } |
| 307 | |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 308 | static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | { |
| 310 | struct i2c_client *client = to_i2c_client(dev); |
| 311 | struct sis5595_data *data = i2c_get_clientdata(client); |
| 312 | long val = simple_strtol(buf, NULL, 10); |
| 313 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 314 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | data->temp_over = TEMP_TO_REG(val); |
| 316 | sis5595_write_value(client, SIS5595_REG_TEMP_OVER, data->temp_over); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 317 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | return count; |
| 319 | } |
| 320 | |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 321 | static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
| 323 | struct sis5595_data *data = sis5595_update_device(dev); |
| 324 | return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_hyst)); |
| 325 | } |
| 326 | |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 327 | static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | { |
| 329 | struct i2c_client *client = to_i2c_client(dev); |
| 330 | struct sis5595_data *data = i2c_get_clientdata(client); |
| 331 | long val = simple_strtol(buf, NULL, 10); |
| 332 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 333 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | data->temp_hyst = TEMP_TO_REG(val); |
| 335 | sis5595_write_value(client, SIS5595_REG_TEMP_HYST, data->temp_hyst); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 336 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | return count; |
| 338 | } |
| 339 | |
| 340 | static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL); |
| 341 | static DEVICE_ATTR(temp1_max, S_IRUGO | S_IWUSR, |
| 342 | show_temp_over, set_temp_over); |
| 343 | static DEVICE_ATTR(temp1_max_hyst, S_IRUGO | S_IWUSR, |
| 344 | show_temp_hyst, set_temp_hyst); |
| 345 | |
| 346 | /* 2 Fans */ |
| 347 | static ssize_t show_fan(struct device *dev, char *buf, int nr) |
| 348 | { |
| 349 | struct sis5595_data *data = sis5595_update_device(dev); |
| 350 | return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr], |
| 351 | DIV_FROM_REG(data->fan_div[nr])) ); |
| 352 | } |
| 353 | |
| 354 | static ssize_t show_fan_min(struct device *dev, char *buf, int nr) |
| 355 | { |
| 356 | struct sis5595_data *data = sis5595_update_device(dev); |
| 357 | return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr], |
| 358 | DIV_FROM_REG(data->fan_div[nr])) ); |
| 359 | } |
| 360 | |
| 361 | static ssize_t set_fan_min(struct device *dev, const char *buf, |
| 362 | size_t count, int nr) |
| 363 | { |
| 364 | struct i2c_client *client = to_i2c_client(dev); |
| 365 | struct sis5595_data *data = i2c_get_clientdata(client); |
| 366 | unsigned long val = simple_strtoul(buf, NULL, 10); |
| 367 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 368 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
| 370 | sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 371 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | return count; |
| 373 | } |
| 374 | |
| 375 | static ssize_t show_fan_div(struct device *dev, char *buf, int nr) |
| 376 | { |
| 377 | struct sis5595_data *data = sis5595_update_device(dev); |
| 378 | return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]) ); |
| 379 | } |
| 380 | |
| 381 | /* Note: we save and restore the fan minimum here, because its value is |
| 382 | determined in part by the fan divisor. This follows the principle of |
Andreas Mohr | d6e05ed | 2006-06-26 18:35:02 +0200 | [diff] [blame] | 383 | least surprise; the user doesn't expect the fan minimum to change just |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | because the divisor changed. */ |
| 385 | static ssize_t set_fan_div(struct device *dev, const char *buf, |
| 386 | size_t count, int nr) |
| 387 | { |
| 388 | struct i2c_client *client = to_i2c_client(dev); |
| 389 | struct sis5595_data *data = i2c_get_clientdata(client); |
| 390 | unsigned long min; |
| 391 | unsigned long val = simple_strtoul(buf, NULL, 10); |
| 392 | int reg; |
| 393 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 394 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | min = FAN_FROM_REG(data->fan_min[nr], |
| 396 | DIV_FROM_REG(data->fan_div[nr])); |
| 397 | reg = sis5595_read_value(client, SIS5595_REG_FANDIV); |
| 398 | |
| 399 | switch (val) { |
| 400 | case 1: data->fan_div[nr] = 0; break; |
| 401 | case 2: data->fan_div[nr] = 1; break; |
| 402 | case 4: data->fan_div[nr] = 2; break; |
| 403 | case 8: data->fan_div[nr] = 3; break; |
| 404 | default: |
| 405 | dev_err(&client->dev, "fan_div value %ld not " |
| 406 | "supported. Choose one of 1, 2, 4 or 8!\n", val); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 407 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | return -EINVAL; |
| 409 | } |
| 410 | |
| 411 | switch (nr) { |
| 412 | case 0: |
| 413 | reg = (reg & 0xcf) | (data->fan_div[nr] << 4); |
| 414 | break; |
| 415 | case 1: |
| 416 | reg = (reg & 0x3f) | (data->fan_div[nr] << 6); |
| 417 | break; |
| 418 | } |
| 419 | sis5595_write_value(client, SIS5595_REG_FANDIV, reg); |
| 420 | data->fan_min[nr] = |
| 421 | FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
| 422 | sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 423 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | return count; |
| 425 | } |
| 426 | |
| 427 | #define show_fan_offset(offset) \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 428 | static ssize_t show_fan_##offset (struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | { \ |
| 430 | return show_fan(dev, buf, offset - 1); \ |
| 431 | } \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 432 | static ssize_t show_fan_##offset##_min (struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | { \ |
| 434 | return show_fan_min(dev, buf, offset - 1); \ |
| 435 | } \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 436 | static ssize_t show_fan_##offset##_div (struct device *dev, struct device_attribute *attr, char *buf) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | { \ |
| 438 | return show_fan_div(dev, buf, offset - 1); \ |
| 439 | } \ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 440 | static ssize_t set_fan_##offset##_min (struct device *dev, struct device_attribute *attr, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | const char *buf, size_t count) \ |
| 442 | { \ |
| 443 | return set_fan_min(dev, buf, count, offset - 1); \ |
| 444 | } \ |
| 445 | static DEVICE_ATTR(fan##offset##_input, S_IRUGO, show_fan_##offset, NULL);\ |
| 446 | static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ |
| 447 | show_fan_##offset##_min, set_fan_##offset##_min); |
| 448 | |
| 449 | show_fan_offset(1); |
| 450 | show_fan_offset(2); |
| 451 | |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 452 | static ssize_t set_fan_1_div(struct device *dev, struct device_attribute *attr, const char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | size_t count) |
| 454 | { |
| 455 | return set_fan_div(dev, buf, count, 0) ; |
| 456 | } |
| 457 | |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 458 | static ssize_t set_fan_2_div(struct device *dev, struct device_attribute *attr, const char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | size_t count) |
| 460 | { |
| 461 | return set_fan_div(dev, buf, count, 1) ; |
| 462 | } |
| 463 | static DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, |
| 464 | show_fan_1_div, set_fan_1_div); |
| 465 | static DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, |
| 466 | show_fan_2_div, set_fan_2_div); |
| 467 | |
| 468 | /* Alarms */ |
Yani Ioannou | a5099cf | 2005-05-17 06:42:25 -0400 | [diff] [blame] | 469 | static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | { |
| 471 | struct sis5595_data *data = sis5595_update_device(dev); |
| 472 | return sprintf(buf, "%d\n", data->alarms); |
| 473 | } |
| 474 | static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
| 475 | |
| 476 | /* This is called when the module is loaded */ |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 477 | static int sis5595_detect(struct i2c_adapter *adapter) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | { |
| 479 | int err = 0; |
| 480 | int i; |
| 481 | struct i2c_client *new_client; |
| 482 | struct sis5595_data *data; |
| 483 | char val; |
| 484 | u16 a; |
| 485 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | if (force_addr) |
| 487 | address = force_addr & ~(SIS5595_EXTENT - 1); |
| 488 | /* Reserve the ISA region */ |
Laurent Riffard | cdaf793 | 2005-11-26 20:37:41 +0100 | [diff] [blame] | 489 | if (!request_region(address, SIS5595_EXTENT, |
| 490 | sis5595_driver.driver.name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | err = -EBUSY; |
| 492 | goto exit; |
| 493 | } |
| 494 | if (force_addr) { |
| 495 | dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address); |
| 496 | if (PCIBIOS_SUCCESSFUL != |
| 497 | pci_write_config_word(s_bridge, SIS5595_BASE_REG, address)) |
| 498 | goto exit_release; |
| 499 | if (PCIBIOS_SUCCESSFUL != |
| 500 | pci_read_config_word(s_bridge, SIS5595_BASE_REG, &a)) |
| 501 | goto exit_release; |
| 502 | if ((a & ~(SIS5595_EXTENT - 1)) != address) |
| 503 | /* doesn't work for some chips? */ |
| 504 | goto exit_release; |
| 505 | } |
| 506 | |
| 507 | if (PCIBIOS_SUCCESSFUL != |
| 508 | pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) { |
| 509 | goto exit_release; |
| 510 | } |
| 511 | if ((val & 0x80) == 0) { |
| 512 | if (PCIBIOS_SUCCESSFUL != |
| 513 | pci_write_config_byte(s_bridge, SIS5595_ENABLE_REG, |
| 514 | val | 0x80)) |
| 515 | goto exit_release; |
| 516 | if (PCIBIOS_SUCCESSFUL != |
| 517 | pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) |
| 518 | goto exit_release; |
| 519 | if ((val & 0x80) == 0) |
| 520 | /* doesn't work for some chips! */ |
| 521 | goto exit_release; |
| 522 | } |
| 523 | |
Deepak Saxena | ba9c2e8 | 2005-10-17 23:08:32 +0200 | [diff] [blame] | 524 | if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | err = -ENOMEM; |
| 526 | goto exit_release; |
| 527 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | |
| 529 | new_client = &data->client; |
| 530 | new_client->addr = address; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 531 | mutex_init(&data->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | i2c_set_clientdata(new_client, data); |
| 533 | new_client->adapter = adapter; |
| 534 | new_client->driver = &sis5595_driver; |
| 535 | new_client->flags = 0; |
| 536 | |
| 537 | /* Check revision and pin registers to determine whether 4 or 5 voltages */ |
| 538 | pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision)); |
| 539 | /* 4 voltages, 1 temp */ |
| 540 | data->maxins = 3; |
| 541 | if (data->revision >= REV2MIN) { |
| 542 | pci_read_config_byte(s_bridge, SIS5595_PIN_REG, &val); |
| 543 | if (!(val & 0x80)) |
| 544 | /* 5 voltages, no temps */ |
| 545 | data->maxins = 4; |
| 546 | } |
| 547 | |
| 548 | /* Fill in the remaining client fields and put it into the global list */ |
| 549 | strlcpy(new_client->name, "sis5595", I2C_NAME_SIZE); |
| 550 | |
| 551 | data->valid = 0; |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 552 | mutex_init(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | |
| 554 | /* Tell the I2C layer a new client has arrived */ |
| 555 | if ((err = i2c_attach_client(new_client))) |
| 556 | goto exit_free; |
| 557 | |
| 558 | /* Initialize the SIS5595 chip */ |
| 559 | sis5595_init_client(new_client); |
| 560 | |
| 561 | /* A few vars need to be filled upon startup */ |
| 562 | for (i = 0; i < 2; i++) { |
| 563 | data->fan_min[i] = sis5595_read_value(new_client, |
| 564 | SIS5595_REG_FAN_MIN(i)); |
| 565 | } |
| 566 | |
| 567 | /* Register sysfs hooks */ |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 568 | data->class_dev = hwmon_device_register(&new_client->dev); |
| 569 | if (IS_ERR(data->class_dev)) { |
| 570 | err = PTR_ERR(data->class_dev); |
| 571 | goto exit_detach; |
| 572 | } |
| 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | device_create_file(&new_client->dev, &dev_attr_in0_input); |
| 575 | device_create_file(&new_client->dev, &dev_attr_in0_min); |
| 576 | device_create_file(&new_client->dev, &dev_attr_in0_max); |
| 577 | device_create_file(&new_client->dev, &dev_attr_in1_input); |
| 578 | device_create_file(&new_client->dev, &dev_attr_in1_min); |
| 579 | device_create_file(&new_client->dev, &dev_attr_in1_max); |
| 580 | device_create_file(&new_client->dev, &dev_attr_in2_input); |
| 581 | device_create_file(&new_client->dev, &dev_attr_in2_min); |
| 582 | device_create_file(&new_client->dev, &dev_attr_in2_max); |
| 583 | device_create_file(&new_client->dev, &dev_attr_in3_input); |
| 584 | device_create_file(&new_client->dev, &dev_attr_in3_min); |
| 585 | device_create_file(&new_client->dev, &dev_attr_in3_max); |
| 586 | if (data->maxins == 4) { |
| 587 | device_create_file(&new_client->dev, &dev_attr_in4_input); |
| 588 | device_create_file(&new_client->dev, &dev_attr_in4_min); |
| 589 | device_create_file(&new_client->dev, &dev_attr_in4_max); |
| 590 | } |
| 591 | device_create_file(&new_client->dev, &dev_attr_fan1_input); |
| 592 | device_create_file(&new_client->dev, &dev_attr_fan1_min); |
| 593 | device_create_file(&new_client->dev, &dev_attr_fan1_div); |
| 594 | device_create_file(&new_client->dev, &dev_attr_fan2_input); |
| 595 | device_create_file(&new_client->dev, &dev_attr_fan2_min); |
| 596 | device_create_file(&new_client->dev, &dev_attr_fan2_div); |
| 597 | device_create_file(&new_client->dev, &dev_attr_alarms); |
| 598 | if (data->maxins == 3) { |
| 599 | device_create_file(&new_client->dev, &dev_attr_temp1_input); |
| 600 | device_create_file(&new_client->dev, &dev_attr_temp1_max); |
| 601 | device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst); |
| 602 | } |
| 603 | return 0; |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 604 | |
| 605 | exit_detach: |
| 606 | i2c_detach_client(new_client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | exit_free: |
| 608 | kfree(data); |
| 609 | exit_release: |
| 610 | release_region(address, SIS5595_EXTENT); |
| 611 | exit: |
| 612 | return err; |
| 613 | } |
| 614 | |
| 615 | static int sis5595_detach_client(struct i2c_client *client) |
| 616 | { |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 617 | struct sis5595_data *data = i2c_get_clientdata(client); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | int err; |
| 619 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 620 | hwmon_device_unregister(data->class_dev); |
| 621 | |
Jean Delvare | 7bef559 | 2005-07-27 22:14:49 +0200 | [diff] [blame] | 622 | if ((err = i2c_detach_client(client))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 625 | release_region(client->addr, SIS5595_EXTENT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | |
Mark M. Hoffman | 943b083 | 2005-07-15 21:39:18 -0400 | [diff] [blame] | 627 | kfree(data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | |
| 629 | return 0; |
| 630 | } |
| 631 | |
| 632 | |
| 633 | /* ISA access must be locked explicitly. */ |
| 634 | static int sis5595_read_value(struct i2c_client *client, u8 reg) |
| 635 | { |
| 636 | int res; |
| 637 | |
| 638 | struct sis5595_data *data = i2c_get_clientdata(client); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 639 | mutex_lock(&data->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 640 | outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); |
| 641 | res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 642 | mutex_unlock(&data->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | return res; |
| 644 | } |
| 645 | |
| 646 | static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value) |
| 647 | { |
| 648 | struct sis5595_data *data = i2c_get_clientdata(client); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 649 | mutex_lock(&data->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET); |
| 651 | outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET); |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 652 | mutex_unlock(&data->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | return 0; |
| 654 | } |
| 655 | |
| 656 | /* Called when we have found a new SIS5595. */ |
| 657 | static void sis5595_init_client(struct i2c_client *client) |
| 658 | { |
| 659 | u8 config = sis5595_read_value(client, SIS5595_REG_CONFIG); |
| 660 | if (!(config & 0x01)) |
| 661 | sis5595_write_value(client, SIS5595_REG_CONFIG, |
| 662 | (config & 0xf7) | 0x01); |
| 663 | } |
| 664 | |
| 665 | static struct sis5595_data *sis5595_update_device(struct device *dev) |
| 666 | { |
| 667 | struct i2c_client *client = to_i2c_client(dev); |
| 668 | struct sis5595_data *data = i2c_get_clientdata(client); |
| 669 | int i; |
| 670 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 671 | mutex_lock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
| 673 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
| 674 | || !data->valid) { |
| 675 | |
| 676 | for (i = 0; i <= data->maxins; i++) { |
| 677 | data->in[i] = |
| 678 | sis5595_read_value(client, SIS5595_REG_IN(i)); |
| 679 | data->in_min[i] = |
| 680 | sis5595_read_value(client, |
| 681 | SIS5595_REG_IN_MIN(i)); |
| 682 | data->in_max[i] = |
| 683 | sis5595_read_value(client, |
| 684 | SIS5595_REG_IN_MAX(i)); |
| 685 | } |
| 686 | for (i = 0; i < 2; i++) { |
| 687 | data->fan[i] = |
| 688 | sis5595_read_value(client, SIS5595_REG_FAN(i)); |
| 689 | data->fan_min[i] = |
| 690 | sis5595_read_value(client, |
| 691 | SIS5595_REG_FAN_MIN(i)); |
| 692 | } |
| 693 | if (data->maxins == 3) { |
| 694 | data->temp = |
| 695 | sis5595_read_value(client, SIS5595_REG_TEMP); |
| 696 | data->temp_over = |
| 697 | sis5595_read_value(client, SIS5595_REG_TEMP_OVER); |
| 698 | data->temp_hyst = |
| 699 | sis5595_read_value(client, SIS5595_REG_TEMP_HYST); |
| 700 | } |
| 701 | i = sis5595_read_value(client, SIS5595_REG_FANDIV); |
| 702 | data->fan_div[0] = (i >> 4) & 0x03; |
| 703 | data->fan_div[1] = i >> 6; |
| 704 | data->alarms = |
| 705 | sis5595_read_value(client, SIS5595_REG_ALARM1) | |
| 706 | (sis5595_read_value(client, SIS5595_REG_ALARM2) << 8); |
| 707 | data->last_updated = jiffies; |
| 708 | data->valid = 1; |
| 709 | } |
| 710 | |
Ingo Molnar | 9a61bf6 | 2006-01-18 23:19:26 +0100 | [diff] [blame] | 711 | mutex_unlock(&data->update_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | |
| 713 | return data; |
| 714 | } |
| 715 | |
| 716 | static struct pci_device_id sis5595_pci_ids[] = { |
| 717 | { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, |
| 718 | { 0, } |
| 719 | }; |
| 720 | |
| 721 | MODULE_DEVICE_TABLE(pci, sis5595_pci_ids); |
| 722 | |
| 723 | static int blacklist[] __devinitdata = { |
| 724 | PCI_DEVICE_ID_SI_540, |
| 725 | PCI_DEVICE_ID_SI_550, |
| 726 | PCI_DEVICE_ID_SI_630, |
| 727 | PCI_DEVICE_ID_SI_645, |
| 728 | PCI_DEVICE_ID_SI_730, |
| 729 | PCI_DEVICE_ID_SI_735, |
| 730 | PCI_DEVICE_ID_SI_5511, /* 5513 chip has the 0008 device but |
| 731 | that ID shows up in other chips so we |
| 732 | use the 5511 ID for recognition */ |
| 733 | PCI_DEVICE_ID_SI_5597, |
| 734 | PCI_DEVICE_ID_SI_5598, |
| 735 | 0 }; |
| 736 | |
| 737 | static int __devinit sis5595_pci_probe(struct pci_dev *dev, |
| 738 | const struct pci_device_id *id) |
| 739 | { |
| 740 | u16 val; |
| 741 | int *i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
| 743 | for (i = blacklist; *i != 0; i++) { |
| 744 | struct pci_dev *dev; |
| 745 | dev = pci_get_device(PCI_VENDOR_ID_SI, *i, NULL); |
| 746 | if (dev) { |
| 747 | dev_err(&dev->dev, "Looked for SIS5595 but found unsupported device %.4x\n", *i); |
| 748 | pci_dev_put(dev); |
| 749 | return -ENODEV; |
| 750 | } |
| 751 | } |
| 752 | |
| 753 | if (PCIBIOS_SUCCESSFUL != |
| 754 | pci_read_config_word(dev, SIS5595_BASE_REG, &val)) |
| 755 | return -ENODEV; |
| 756 | |
Jean Delvare | 2d8672c | 2005-07-19 23:56:35 +0200 | [diff] [blame] | 757 | address = val & ~(SIS5595_EXTENT - 1); |
| 758 | if (address == 0 && force_addr == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n"); |
| 760 | return -ENODEV; |
| 761 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | s_bridge = pci_dev_get(dev); |
Jean Delvare | fde0950 | 2005-07-19 23:51:07 +0200 | [diff] [blame] | 764 | if (i2c_isa_add_driver(&sis5595_driver)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | pci_dev_put(s_bridge); |
| 766 | s_bridge = NULL; |
| 767 | } |
| 768 | |
| 769 | /* Always return failure here. This is to allow other drivers to bind |
| 770 | * to this pci device. We don't really want to have control over the |
| 771 | * pci device, we only wanted to read as few register values from it. |
| 772 | */ |
| 773 | return -ENODEV; |
| 774 | } |
| 775 | |
| 776 | static struct pci_driver sis5595_pci_driver = { |
| 777 | .name = "sis5595", |
| 778 | .id_table = sis5595_pci_ids, |
| 779 | .probe = sis5595_pci_probe, |
| 780 | }; |
| 781 | |
| 782 | static int __init sm_sis5595_init(void) |
| 783 | { |
| 784 | return pci_register_driver(&sis5595_pci_driver); |
| 785 | } |
| 786 | |
| 787 | static void __exit sm_sis5595_exit(void) |
| 788 | { |
| 789 | pci_unregister_driver(&sis5595_pci_driver); |
| 790 | if (s_bridge != NULL) { |
Jean Delvare | fde0950 | 2005-07-19 23:51:07 +0200 | [diff] [blame] | 791 | i2c_isa_del_driver(&sis5595_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 792 | pci_dev_put(s_bridge); |
| 793 | s_bridge = NULL; |
| 794 | } |
| 795 | } |
| 796 | |
| 797 | MODULE_AUTHOR("Aurelien Jarno <aurelien@aurel32.net>"); |
| 798 | MODULE_DESCRIPTION("SiS 5595 Sensor device"); |
| 799 | MODULE_LICENSE("GPL"); |
| 800 | |
| 801 | module_init(sm_sis5595_init); |
| 802 | module_exit(sm_sis5595_exit); |