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1da177e4 | 1 | /* |
1da177e4 LT |
2 | Copyright (c) 1999 Frodo Looijaard <frodol@dds.nl> and |
3 | Philip Edelbrock <phil@netroedge.com> and | |
4 | Mark D. Studebaker <mdsxyz123@yahoo.com> | |
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 as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
19 | */ | |
20 | ||
21 | /* | |
22 | This is the driver for the SMB Host controller on | |
23 | Acer Labs Inc. (ALI) M1541 and M1543C South Bridges. | |
24 | ||
25 | The M1543C is a South bridge for desktop systems. | |
26 | The M1533 is a South bridge for portable systems. | |
27 | They are part of the following ALI chipsets: | |
28 | "Aladdin Pro 2": Includes the M1621 Slot 1 North bridge | |
29 | with AGP and 100MHz CPU Front Side bus | |
30 | "Aladdin V": Includes the M1541 Socket 7 North bridge | |
31 | with AGP and 100MHz CPU Front Side bus | |
32 | "Aladdin IV": Includes the M1541 Socket 7 North bridge | |
33 | with host bus up to 83.3 MHz. | |
34 | For an overview of these chips see http://www.acerlabs.com | |
35 | ||
36 | The M1533/M1543C devices appear as FOUR separate devices | |
37 | on the PCI bus. An output of lspci will show something similar | |
38 | to the following: | |
39 | ||
40 | 00:02.0 USB Controller: Acer Laboratories Inc. M5237 | |
41 | 00:03.0 Bridge: Acer Laboratories Inc. M7101 | |
42 | 00:07.0 ISA bridge: Acer Laboratories Inc. M1533 | |
43 | 00:0f.0 IDE interface: Acer Laboratories Inc. M5229 | |
44 | ||
45 | The SMB controller is part of the 7101 device, which is an | |
46 | ACPI-compliant Power Management Unit (PMU). | |
47 | ||
48 | The whole 7101 device has to be enabled for the SMB to work. | |
49 | You can't just enable the SMB alone. | |
50 | The SMB and the ACPI have separate I/O spaces. | |
51 | We make sure that the SMB is enabled. We leave the ACPI alone. | |
52 | ||
53 | This driver controls the SMB Host only. | |
54 | The SMB Slave controller on the M15X3 is not enabled. | |
55 | ||
56 | This driver does not use interrupts. | |
57 | */ | |
58 | ||
59 | /* Note: we assume there can only be one ALI15X3, with one SMBus interface */ | |
60 | ||
1da177e4 LT |
61 | #include <linux/module.h> |
62 | #include <linux/pci.h> | |
63 | #include <linux/kernel.h> | |
64 | #include <linux/stddef.h> | |
1da177e4 LT |
65 | #include <linux/ioport.h> |
66 | #include <linux/delay.h> | |
67 | #include <linux/i2c.h> | |
68 | #include <linux/init.h> | |
54fb4a05 | 69 | #include <linux/acpi.h> |
21782180 | 70 | #include <linux/io.h> |
1da177e4 LT |
71 | |
72 | /* ALI15X3 SMBus address offsets */ | |
73 | #define SMBHSTSTS (0 + ali15x3_smba) | |
74 | #define SMBHSTCNT (1 + ali15x3_smba) | |
75 | #define SMBHSTSTART (2 + ali15x3_smba) | |
76 | #define SMBHSTCMD (7 + ali15x3_smba) | |
77 | #define SMBHSTADD (3 + ali15x3_smba) | |
78 | #define SMBHSTDAT0 (4 + ali15x3_smba) | |
79 | #define SMBHSTDAT1 (5 + ali15x3_smba) | |
80 | #define SMBBLKDAT (6 + ali15x3_smba) | |
81 | ||
82 | /* PCI Address Constants */ | |
83 | #define SMBCOM 0x004 | |
84 | #define SMBBA 0x014 | |
85 | #define SMBATPC 0x05B /* used to unlock xxxBA registers */ | |
86 | #define SMBHSTCFG 0x0E0 | |
87 | #define SMBSLVC 0x0E1 | |
88 | #define SMBCLK 0x0E2 | |
89 | #define SMBREV 0x008 | |
90 | ||
91 | /* Other settings */ | |
92 | #define MAX_TIMEOUT 200 /* times 1/100 sec */ | |
93 | #define ALI15X3_SMB_IOSIZE 32 | |
94 | ||
95 | /* this is what the Award 1004 BIOS sets them to on a ASUS P5A MB. | |
96 | We don't use these here. If the bases aren't set to some value we | |
97 | tell user to upgrade BIOS and we fail. | |
98 | */ | |
99 | #define ALI15X3_SMB_DEFAULTBASE 0xE800 | |
100 | ||
101 | /* ALI15X3 address lock bits */ | |
102 | #define ALI15X3_LOCK 0x06 | |
103 | ||
104 | /* ALI15X3 command constants */ | |
105 | #define ALI15X3_ABORT 0x02 | |
106 | #define ALI15X3_T_OUT 0x04 | |
107 | #define ALI15X3_QUICK 0x00 | |
108 | #define ALI15X3_BYTE 0x10 | |
109 | #define ALI15X3_BYTE_DATA 0x20 | |
110 | #define ALI15X3_WORD_DATA 0x30 | |
111 | #define ALI15X3_BLOCK_DATA 0x40 | |
112 | #define ALI15X3_BLOCK_CLR 0x80 | |
113 | ||
114 | /* ALI15X3 status register bits */ | |
115 | #define ALI15X3_STS_IDLE 0x04 | |
116 | #define ALI15X3_STS_BUSY 0x08 | |
117 | #define ALI15X3_STS_DONE 0x10 | |
118 | #define ALI15X3_STS_DEV 0x20 /* device error */ | |
119 | #define ALI15X3_STS_COLL 0x40 /* collision or no response */ | |
120 | #define ALI15X3_STS_TERM 0x80 /* terminated by abort */ | |
121 | #define ALI15X3_STS_ERR 0xE0 /* all the bad error bits */ | |
122 | ||
123 | ||
124 | /* If force_addr is set to anything different from 0, we forcibly enable | |
125 | the device at the given address. */ | |
60507095 | 126 | static u16 force_addr; |
1da177e4 LT |
127 | module_param(force_addr, ushort, 0); |
128 | MODULE_PARM_DESC(force_addr, | |
129 | "Initialize the base address of the i2c controller"); | |
130 | ||
d6072f84 | 131 | static struct pci_driver ali15x3_driver; |
60507095 | 132 | static unsigned short ali15x3_smba; |
1da177e4 | 133 | |
abe38388 | 134 | static int __devinit ali15x3_setup(struct pci_dev *ALI15X3_dev) |
1da177e4 LT |
135 | { |
136 | u16 a; | |
137 | unsigned char temp; | |
138 | ||
139 | /* Check the following things: | |
140 | - SMB I/O address is initialized | |
141 | - Device is enabled | |
142 | - We can use the addresses | |
143 | */ | |
144 | ||
145 | /* Unlock the register. | |
146 | The data sheet says that the address registers are read-only | |
147 | if the lock bits are 1, but in fact the address registers | |
148 | are zero unless you clear the lock bits. | |
149 | */ | |
150 | pci_read_config_byte(ALI15X3_dev, SMBATPC, &temp); | |
151 | if (temp & ALI15X3_LOCK) { | |
152 | temp &= ~ALI15X3_LOCK; | |
153 | pci_write_config_byte(ALI15X3_dev, SMBATPC, temp); | |
154 | } | |
155 | ||
156 | /* Determine the address of the SMBus area */ | |
157 | pci_read_config_word(ALI15X3_dev, SMBBA, &ali15x3_smba); | |
158 | ali15x3_smba &= (0xffff & ~(ALI15X3_SMB_IOSIZE - 1)); | |
159 | if (ali15x3_smba == 0 && force_addr == 0) { | |
160 | dev_err(&ALI15X3_dev->dev, "ALI15X3_smb region uninitialized " | |
161 | "- upgrade BIOS or use force_addr=0xaddr\n"); | |
162 | return -ENODEV; | |
163 | } | |
164 | ||
165 | if(force_addr) | |
166 | ali15x3_smba = force_addr & ~(ALI15X3_SMB_IOSIZE - 1); | |
167 | ||
54fb4a05 JD |
168 | if (acpi_check_region(ali15x3_smba, ALI15X3_SMB_IOSIZE, |
169 | ali15x3_driver.name)) | |
170 | return -EBUSY; | |
171 | ||
d6072f84 JD |
172 | if (!request_region(ali15x3_smba, ALI15X3_SMB_IOSIZE, |
173 | ali15x3_driver.name)) { | |
1da177e4 LT |
174 | dev_err(&ALI15X3_dev->dev, |
175 | "ALI15X3_smb region 0x%x already in use!\n", | |
176 | ali15x3_smba); | |
177 | return -ENODEV; | |
178 | } | |
179 | ||
180 | if(force_addr) { | |
181 | dev_info(&ALI15X3_dev->dev, "forcing ISA address 0x%04X\n", | |
182 | ali15x3_smba); | |
183 | if (PCIBIOS_SUCCESSFUL != pci_write_config_word(ALI15X3_dev, | |
184 | SMBBA, | |
185 | ali15x3_smba)) | |
186 | goto error; | |
187 | if (PCIBIOS_SUCCESSFUL != pci_read_config_word(ALI15X3_dev, | |
188 | SMBBA, &a)) | |
189 | goto error; | |
190 | if ((a & ~(ALI15X3_SMB_IOSIZE - 1)) != ali15x3_smba) { | |
191 | /* make sure it works */ | |
192 | dev_err(&ALI15X3_dev->dev, | |
193 | "force address failed - not supported?\n"); | |
194 | goto error; | |
195 | } | |
196 | } | |
197 | /* check if whole device is enabled */ | |
198 | pci_read_config_byte(ALI15X3_dev, SMBCOM, &temp); | |
199 | if ((temp & 1) == 0) { | |
200 | dev_info(&ALI15X3_dev->dev, "enabling SMBus device\n"); | |
201 | pci_write_config_byte(ALI15X3_dev, SMBCOM, temp | 0x01); | |
202 | } | |
203 | ||
204 | /* Is SMB Host controller enabled? */ | |
205 | pci_read_config_byte(ALI15X3_dev, SMBHSTCFG, &temp); | |
206 | if ((temp & 1) == 0) { | |
207 | dev_info(&ALI15X3_dev->dev, "enabling SMBus controller\n"); | |
208 | pci_write_config_byte(ALI15X3_dev, SMBHSTCFG, temp | 0x01); | |
209 | } | |
210 | ||
211 | /* set SMB clock to 74KHz as recommended in data sheet */ | |
212 | pci_write_config_byte(ALI15X3_dev, SMBCLK, 0x20); | |
213 | ||
214 | /* | |
215 | The interrupt routing for SMB is set up in register 0x77 in the | |
216 | 1533 ISA Bridge device, NOT in the 7101 device. | |
217 | Don't bother with finding the 1533 device and reading the register. | |
218 | if ((....... & 0x0F) == 1) | |
219 | dev_dbg(&ALI15X3_dev->dev, "ALI15X3 using Interrupt 9 for SMBus.\n"); | |
220 | */ | |
221 | pci_read_config_byte(ALI15X3_dev, SMBREV, &temp); | |
222 | dev_dbg(&ALI15X3_dev->dev, "SMBREV = 0x%X\n", temp); | |
223 | dev_dbg(&ALI15X3_dev->dev, "iALI15X3_smba = 0x%X\n", ali15x3_smba); | |
224 | ||
225 | return 0; | |
226 | error: | |
227 | release_region(ali15x3_smba, ALI15X3_SMB_IOSIZE); | |
228 | return -ENODEV; | |
229 | } | |
230 | ||
231 | /* Another internally used function */ | |
232 | static int ali15x3_transaction(struct i2c_adapter *adap) | |
233 | { | |
234 | int temp; | |
235 | int result = 0; | |
236 | int timeout = 0; | |
237 | ||
238 | dev_dbg(&adap->dev, "Transaction (pre): STS=%02x, CNT=%02x, CMD=%02x, " | |
239 | "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTSTS), | |
240 | inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD), | |
241 | inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); | |
242 | ||
243 | /* get status */ | |
244 | temp = inb_p(SMBHSTSTS); | |
245 | ||
246 | /* Make sure the SMBus host is ready to start transmitting */ | |
247 | /* Check the busy bit first */ | |
248 | if (temp & ALI15X3_STS_BUSY) { | |
249 | /* | |
250 | If the host controller is still busy, it may have timed out in the | |
251 | previous transaction, resulting in a "SMBus Timeout" Dev. | |
252 | I've tried the following to reset a stuck busy bit. | |
253 | 1. Reset the controller with an ABORT command. | |
254 | (this doesn't seem to clear the controller if an external | |
255 | device is hung) | |
256 | 2. Reset the controller and the other SMBus devices with a | |
257 | T_OUT command. (this clears the host busy bit if an | |
258 | external device is hung, but it comes back upon a new access | |
259 | to a device) | |
260 | 3. Disable and reenable the controller in SMBHSTCFG | |
261 | Worst case, nothing seems to work except power reset. | |
262 | */ | |
263 | /* Abort - reset the host controller */ | |
264 | /* | |
265 | Try resetting entire SMB bus, including other devices - | |
266 | This may not work either - it clears the BUSY bit but | |
267 | then the BUSY bit may come back on when you try and use the chip again. | |
268 | If that's the case you are stuck. | |
269 | */ | |
270 | dev_info(&adap->dev, "Resetting entire SMB Bus to " | |
271 | "clear busy condition (%02x)\n", temp); | |
272 | outb_p(ALI15X3_T_OUT, SMBHSTCNT); | |
273 | temp = inb_p(SMBHSTSTS); | |
274 | } | |
275 | ||
276 | /* now check the error bits and the busy bit */ | |
277 | if (temp & (ALI15X3_STS_ERR | ALI15X3_STS_BUSY)) { | |
278 | /* do a clear-on-write */ | |
279 | outb_p(0xFF, SMBHSTSTS); | |
280 | if ((temp = inb_p(SMBHSTSTS)) & | |
281 | (ALI15X3_STS_ERR | ALI15X3_STS_BUSY)) { | |
282 | /* this is probably going to be correctable only by a power reset | |
283 | as one of the bits now appears to be stuck */ | |
284 | /* This may be a bus or device with electrical problems. */ | |
285 | dev_err(&adap->dev, "SMBus reset failed! (0x%02x) - " | |
286 | "controller or device on bus is probably hung\n", | |
287 | temp); | |
97140342 | 288 | return -EBUSY; |
1da177e4 LT |
289 | } |
290 | } else { | |
291 | /* check and clear done bit */ | |
292 | if (temp & ALI15X3_STS_DONE) { | |
293 | outb_p(temp, SMBHSTSTS); | |
294 | } | |
295 | } | |
296 | ||
297 | /* start the transaction by writing anything to the start register */ | |
298 | outb_p(0xFF, SMBHSTSTART); | |
299 | ||
300 | /* We will always wait for a fraction of a second! */ | |
301 | timeout = 0; | |
302 | do { | |
303 | msleep(1); | |
304 | temp = inb_p(SMBHSTSTS); | |
305 | } while ((!(temp & (ALI15X3_STS_ERR | ALI15X3_STS_DONE))) | |
306 | && (timeout++ < MAX_TIMEOUT)); | |
307 | ||
308 | /* If the SMBus is still busy, we give up */ | |
4ccc28f7 | 309 | if (timeout > MAX_TIMEOUT) { |
97140342 | 310 | result = -ETIMEDOUT; |
1da177e4 LT |
311 | dev_err(&adap->dev, "SMBus Timeout!\n"); |
312 | } | |
313 | ||
314 | if (temp & ALI15X3_STS_TERM) { | |
97140342 | 315 | result = -EIO; |
1da177e4 LT |
316 | dev_dbg(&adap->dev, "Error: Failed bus transaction\n"); |
317 | } | |
318 | ||
319 | /* | |
320 | Unfortunately the ALI SMB controller maps "no response" and "bus | |
25985edc | 321 | collision" into a single bit. No response is the usual case so don't |
1da177e4 LT |
322 | do a printk. |
323 | This means that bus collisions go unreported. | |
324 | */ | |
325 | if (temp & ALI15X3_STS_COLL) { | |
97140342 | 326 | result = -ENXIO; |
1da177e4 LT |
327 | dev_dbg(&adap->dev, |
328 | "Error: no response or bus collision ADD=%02x\n", | |
329 | inb_p(SMBHSTADD)); | |
330 | } | |
331 | ||
332 | /* haven't ever seen this */ | |
333 | if (temp & ALI15X3_STS_DEV) { | |
97140342 | 334 | result = -EIO; |
1da177e4 LT |
335 | dev_err(&adap->dev, "Error: device error\n"); |
336 | } | |
337 | dev_dbg(&adap->dev, "Transaction (post): STS=%02x, CNT=%02x, CMD=%02x, " | |
338 | "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTSTS), | |
339 | inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD), | |
340 | inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); | |
341 | return result; | |
342 | } | |
343 | ||
97140342 | 344 | /* Return negative errno on error. */ |
1da177e4 LT |
345 | static s32 ali15x3_access(struct i2c_adapter * adap, u16 addr, |
346 | unsigned short flags, char read_write, u8 command, | |
347 | int size, union i2c_smbus_data * data) | |
348 | { | |
349 | int i, len; | |
350 | int temp; | |
351 | int timeout; | |
352 | ||
353 | /* clear all the bits (clear-on-write) */ | |
354 | outb_p(0xFF, SMBHSTSTS); | |
355 | /* make sure SMBus is idle */ | |
356 | temp = inb_p(SMBHSTSTS); | |
357 | for (timeout = 0; | |
358 | (timeout < MAX_TIMEOUT) && !(temp & ALI15X3_STS_IDLE); | |
359 | timeout++) { | |
360 | msleep(1); | |
361 | temp = inb_p(SMBHSTSTS); | |
362 | } | |
363 | if (timeout >= MAX_TIMEOUT) { | |
364 | dev_err(&adap->dev, "Idle wait Timeout! STS=0x%02x\n", temp); | |
365 | } | |
366 | ||
367 | switch (size) { | |
1da177e4 LT |
368 | case I2C_SMBUS_QUICK: |
369 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
370 | SMBHSTADD); | |
371 | size = ALI15X3_QUICK; | |
372 | break; | |
373 | case I2C_SMBUS_BYTE: | |
374 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
375 | SMBHSTADD); | |
376 | if (read_write == I2C_SMBUS_WRITE) | |
377 | outb_p(command, SMBHSTCMD); | |
378 | size = ALI15X3_BYTE; | |
379 | break; | |
380 | case I2C_SMBUS_BYTE_DATA: | |
381 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
382 | SMBHSTADD); | |
383 | outb_p(command, SMBHSTCMD); | |
384 | if (read_write == I2C_SMBUS_WRITE) | |
385 | outb_p(data->byte, SMBHSTDAT0); | |
386 | size = ALI15X3_BYTE_DATA; | |
387 | break; | |
388 | case I2C_SMBUS_WORD_DATA: | |
389 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
390 | SMBHSTADD); | |
391 | outb_p(command, SMBHSTCMD); | |
392 | if (read_write == I2C_SMBUS_WRITE) { | |
393 | outb_p(data->word & 0xff, SMBHSTDAT0); | |
394 | outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1); | |
395 | } | |
396 | size = ALI15X3_WORD_DATA; | |
397 | break; | |
398 | case I2C_SMBUS_BLOCK_DATA: | |
399 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
400 | SMBHSTADD); | |
401 | outb_p(command, SMBHSTCMD); | |
402 | if (read_write == I2C_SMBUS_WRITE) { | |
403 | len = data->block[0]; | |
404 | if (len < 0) { | |
405 | len = 0; | |
406 | data->block[0] = len; | |
407 | } | |
408 | if (len > 32) { | |
409 | len = 32; | |
410 | data->block[0] = len; | |
411 | } | |
412 | outb_p(len, SMBHSTDAT0); | |
413 | /* Reset SMBBLKDAT */ | |
414 | outb_p(inb_p(SMBHSTCNT) | ALI15X3_BLOCK_CLR, SMBHSTCNT); | |
415 | for (i = 1; i <= len; i++) | |
416 | outb_p(data->block[i], SMBBLKDAT); | |
417 | } | |
418 | size = ALI15X3_BLOCK_DATA; | |
419 | break; | |
ac7fc4fb JD |
420 | default: |
421 | dev_warn(&adap->dev, "Unsupported transaction %d\n", size); | |
422 | return -EOPNOTSUPP; | |
1da177e4 LT |
423 | } |
424 | ||
425 | outb_p(size, SMBHSTCNT); /* output command */ | |
426 | ||
97140342 DB |
427 | temp = ali15x3_transaction(adap); |
428 | if (temp) | |
429 | return temp; | |
1da177e4 LT |
430 | |
431 | if ((read_write == I2C_SMBUS_WRITE) || (size == ALI15X3_QUICK)) | |
432 | return 0; | |
433 | ||
434 | ||
435 | switch (size) { | |
436 | case ALI15X3_BYTE: /* Result put in SMBHSTDAT0 */ | |
437 | data->byte = inb_p(SMBHSTDAT0); | |
438 | break; | |
439 | case ALI15X3_BYTE_DATA: | |
440 | data->byte = inb_p(SMBHSTDAT0); | |
441 | break; | |
442 | case ALI15X3_WORD_DATA: | |
443 | data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8); | |
444 | break; | |
445 | case ALI15X3_BLOCK_DATA: | |
446 | len = inb_p(SMBHSTDAT0); | |
447 | if (len > 32) | |
448 | len = 32; | |
449 | data->block[0] = len; | |
450 | /* Reset SMBBLKDAT */ | |
451 | outb_p(inb_p(SMBHSTCNT) | ALI15X3_BLOCK_CLR, SMBHSTCNT); | |
452 | for (i = 1; i <= data->block[0]; i++) { | |
453 | data->block[i] = inb_p(SMBBLKDAT); | |
454 | dev_dbg(&adap->dev, "Blk: len=%d, i=%d, data=%02x\n", | |
455 | len, i, data->block[i]); | |
456 | } | |
457 | break; | |
458 | } | |
459 | return 0; | |
460 | } | |
461 | ||
462 | static u32 ali15x3_func(struct i2c_adapter *adapter) | |
463 | { | |
464 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | | |
465 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | | |
466 | I2C_FUNC_SMBUS_BLOCK_DATA; | |
467 | } | |
468 | ||
8f9082c5 | 469 | static const struct i2c_algorithm smbus_algorithm = { |
1da177e4 LT |
470 | .smbus_xfer = ali15x3_access, |
471 | .functionality = ali15x3_func, | |
472 | }; | |
473 | ||
474 | static struct i2c_adapter ali15x3_adapter = { | |
475 | .owner = THIS_MODULE, | |
3401b2ff | 476 | .class = I2C_CLASS_HWMON | I2C_CLASS_SPD, |
1da177e4 | 477 | .algo = &smbus_algorithm, |
1da177e4 LT |
478 | }; |
479 | ||
4111ecd2 | 480 | static const struct pci_device_id ali15x3_ids[] = { |
1da177e4 LT |
481 | { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) }, |
482 | { 0, } | |
483 | }; | |
484 | ||
485 | MODULE_DEVICE_TABLE (pci, ali15x3_ids); | |
486 | ||
487 | static int __devinit ali15x3_probe(struct pci_dev *dev, const struct pci_device_id *id) | |
488 | { | |
489 | if (ali15x3_setup(dev)) { | |
490 | dev_err(&dev->dev, | |
491 | "ALI15X3 not detected, module not inserted.\n"); | |
492 | return -ENODEV; | |
493 | } | |
494 | ||
405ae7d3 | 495 | /* set up the sysfs linkage to our parent device */ |
1da177e4 LT |
496 | ali15x3_adapter.dev.parent = &dev->dev; |
497 | ||
2096b956 | 498 | snprintf(ali15x3_adapter.name, sizeof(ali15x3_adapter.name), |
1da177e4 LT |
499 | "SMBus ALI15X3 adapter at %04x", ali15x3_smba); |
500 | return i2c_add_adapter(&ali15x3_adapter); | |
501 | } | |
502 | ||
503 | static void __devexit ali15x3_remove(struct pci_dev *dev) | |
504 | { | |
505 | i2c_del_adapter(&ali15x3_adapter); | |
506 | release_region(ali15x3_smba, ALI15X3_SMB_IOSIZE); | |
507 | } | |
508 | ||
509 | static struct pci_driver ali15x3_driver = { | |
510 | .name = "ali15x3_smbus", | |
511 | .id_table = ali15x3_ids, | |
512 | .probe = ali15x3_probe, | |
513 | .remove = __devexit_p(ali15x3_remove), | |
514 | }; | |
515 | ||
516 | static int __init i2c_ali15x3_init(void) | |
517 | { | |
518 | return pci_register_driver(&ali15x3_driver); | |
519 | } | |
520 | ||
521 | static void __exit i2c_ali15x3_exit(void) | |
522 | { | |
523 | pci_unregister_driver(&ali15x3_driver); | |
524 | } | |
525 | ||
526 | MODULE_AUTHOR ("Frodo Looijaard <frodol@dds.nl>, " | |
527 | "Philip Edelbrock <phil@netroedge.com>, " | |
528 | "and Mark D. Studebaker <mdsxyz123@yahoo.com>"); | |
529 | MODULE_DESCRIPTION("ALI15X3 SMBus driver"); | |
530 | MODULE_LICENSE("GPL"); | |
531 | ||
532 | module_init(i2c_ali15x3_init); | |
533 | module_exit(i2c_ali15x3_exit); |