blob: 6b6a6b1d70252539f6be0c0da874281d624d817e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * SMBus 2.0 driver for AMD-8111 IO-Hub.
3 *
4 * Copyright (c) 2002 Vojtech Pavlik
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 version 2.
9 */
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/module.h>
12#include <linux/pci.h>
13#include <linux/kernel.h>
14#include <linux/stddef.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/ioport.h>
16#include <linux/init.h>
17#include <linux/i2c.h>
18#include <linux/delay.h>
Jean Delvare54fb4a052008-07-14 22:38:33 +020019#include <linux/acpi.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090020#include <linux/slab.h>
H Hartley Sweeten21782182010-05-21 18:41:01 +020021#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070022
23MODULE_LICENSE("GPL");
24MODULE_AUTHOR ("Vojtech Pavlik <vojtech@suse.cz>");
25MODULE_DESCRIPTION("AMD8111 SMBus 2.0 driver");
26
27struct amd_smbus {
28 struct pci_dev *dev;
29 struct i2c_adapter adapter;
30 int base;
31 int size;
32};
33
Jean Delvared6072f82005-09-25 16:37:04 +020034static struct pci_driver amd8111_driver;
35
Linus Torvalds1da177e2005-04-16 15:20:36 -070036/*
37 * AMD PCI control registers definitions.
38 */
39
40#define AMD_PCI_MISC 0x48
41
42#define AMD_PCI_MISC_SCI 0x04 /* deliver SCI */
43#define AMD_PCI_MISC_INT 0x02 /* deliver PCI IRQ */
44#define AMD_PCI_MISC_SPEEDUP 0x01 /* 16x clock speedup */
45
46/*
47 * ACPI 2.0 chapter 13 PCI interface definitions.
48 */
49
50#define AMD_EC_DATA 0x00 /* data register */
51#define AMD_EC_SC 0x04 /* status of controller */
52#define AMD_EC_CMD 0x04 /* command register */
53#define AMD_EC_ICR 0x08 /* interrupt control register */
54
55#define AMD_EC_SC_SMI 0x04 /* smi event pending */
56#define AMD_EC_SC_SCI 0x02 /* sci event pending */
57#define AMD_EC_SC_BURST 0x01 /* burst mode enabled */
58#define AMD_EC_SC_CMD 0x08 /* byte in data reg is command */
59#define AMD_EC_SC_IBF 0x02 /* data ready for embedded controller */
60#define AMD_EC_SC_OBF 0x01 /* data ready for host */
61
62#define AMD_EC_CMD_RD 0x80 /* read EC */
63#define AMD_EC_CMD_WR 0x81 /* write EC */
64#define AMD_EC_CMD_BE 0x82 /* enable burst mode */
65#define AMD_EC_CMD_BD 0x83 /* disable burst mode */
66#define AMD_EC_CMD_QR 0x84 /* query EC */
67
68/*
69 * ACPI 2.0 chapter 13 access of registers of the EC
70 */
71
Julia Lawall9cb2c272010-10-24 18:16:58 +020072static int amd_ec_wait_write(struct amd_smbus *smbus)
Linus Torvalds1da177e2005-04-16 15:20:36 -070073{
74 int timeout = 500;
75
Roel Kluina746b572009-02-24 19:19:48 +010076 while ((inb(smbus->base + AMD_EC_SC) & AMD_EC_SC_IBF) && --timeout)
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 udelay(1);
78
79 if (!timeout) {
Jean Delvare88b9e752007-02-13 22:09:02 +010080 dev_warn(&smbus->dev->dev,
81 "Timeout while waiting for IBF to clear\n");
David Brownell97140342008-07-14 22:38:25 +020082 return -ETIMEDOUT;
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 }
84
85 return 0;
86}
87
Julia Lawall9cb2c272010-10-24 18:16:58 +020088static int amd_ec_wait_read(struct amd_smbus *smbus)
Linus Torvalds1da177e2005-04-16 15:20:36 -070089{
90 int timeout = 500;
91
Roel Kluina746b572009-02-24 19:19:48 +010092 while ((~inb(smbus->base + AMD_EC_SC) & AMD_EC_SC_OBF) && --timeout)
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 udelay(1);
94
95 if (!timeout) {
Jean Delvare88b9e752007-02-13 22:09:02 +010096 dev_warn(&smbus->dev->dev,
97 "Timeout while waiting for OBF to set\n");
David Brownell97140342008-07-14 22:38:25 +020098 return -ETIMEDOUT;
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 }
100
101 return 0;
102}
103
Julia Lawall9cb2c272010-10-24 18:16:58 +0200104static int amd_ec_read(struct amd_smbus *smbus, unsigned char address,
Jean Delvare88b9e752007-02-13 22:09:02 +0100105 unsigned char *data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106{
David Brownell97140342008-07-14 22:38:25 +0200107 int status;
108
109 status = amd_ec_wait_write(smbus);
110 if (status)
111 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 outb(AMD_EC_CMD_RD, smbus->base + AMD_EC_CMD);
113
David Brownell97140342008-07-14 22:38:25 +0200114 status = amd_ec_wait_write(smbus);
115 if (status)
116 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117 outb(address, smbus->base + AMD_EC_DATA);
118
David Brownell97140342008-07-14 22:38:25 +0200119 status = amd_ec_wait_read(smbus);
120 if (status)
121 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700122 *data = inb(smbus->base + AMD_EC_DATA);
123
124 return 0;
125}
126
Julia Lawall9cb2c272010-10-24 18:16:58 +0200127static int amd_ec_write(struct amd_smbus *smbus, unsigned char address,
Jean Delvare88b9e752007-02-13 22:09:02 +0100128 unsigned char data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129{
David Brownell97140342008-07-14 22:38:25 +0200130 int status;
131
132 status = amd_ec_wait_write(smbus);
133 if (status)
134 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135 outb(AMD_EC_CMD_WR, smbus->base + AMD_EC_CMD);
136
David Brownell97140342008-07-14 22:38:25 +0200137 status = amd_ec_wait_write(smbus);
138 if (status)
139 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 outb(address, smbus->base + AMD_EC_DATA);
141
David Brownell97140342008-07-14 22:38:25 +0200142 status = amd_ec_wait_write(smbus);
143 if (status)
144 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145 outb(data, smbus->base + AMD_EC_DATA);
146
147 return 0;
148}
149
150/*
151 * ACPI 2.0 chapter 13 SMBus 2.0 EC register model
152 */
153
154#define AMD_SMB_PRTCL 0x00 /* protocol, PEC */
155#define AMD_SMB_STS 0x01 /* status */
156#define AMD_SMB_ADDR 0x02 /* address */
157#define AMD_SMB_CMD 0x03 /* command */
158#define AMD_SMB_DATA 0x04 /* 32 data registers */
159#define AMD_SMB_BCNT 0x24 /* number of data bytes */
160#define AMD_SMB_ALRM_A 0x25 /* alarm address */
161#define AMD_SMB_ALRM_D 0x26 /* 2 bytes alarm data */
162
163#define AMD_SMB_STS_DONE 0x80
164#define AMD_SMB_STS_ALRM 0x40
165#define AMD_SMB_STS_RES 0x20
166#define AMD_SMB_STS_STATUS 0x1f
167
168#define AMD_SMB_STATUS_OK 0x00
169#define AMD_SMB_STATUS_FAIL 0x07
170#define AMD_SMB_STATUS_DNAK 0x10
171#define AMD_SMB_STATUS_DERR 0x11
172#define AMD_SMB_STATUS_CMD_DENY 0x12
173#define AMD_SMB_STATUS_UNKNOWN 0x13
174#define AMD_SMB_STATUS_ACC_DENY 0x17
175#define AMD_SMB_STATUS_TIMEOUT 0x18
176#define AMD_SMB_STATUS_NOTSUP 0x19
177#define AMD_SMB_STATUS_BUSY 0x1A
178#define AMD_SMB_STATUS_PEC 0x1F
179
180#define AMD_SMB_PRTCL_WRITE 0x00
181#define AMD_SMB_PRTCL_READ 0x01
182#define AMD_SMB_PRTCL_QUICK 0x02
183#define AMD_SMB_PRTCL_BYTE 0x04
184#define AMD_SMB_PRTCL_BYTE_DATA 0x06
185#define AMD_SMB_PRTCL_WORD_DATA 0x08
186#define AMD_SMB_PRTCL_BLOCK_DATA 0x0a
187#define AMD_SMB_PRTCL_PROC_CALL 0x0c
188#define AMD_SMB_PRTCL_BLOCK_PROC_CALL 0x0d
189#define AMD_SMB_PRTCL_I2C_BLOCK_DATA 0x4a
190#define AMD_SMB_PRTCL_PEC 0x80
191
192
Jean Delvare88b9e752007-02-13 22:09:02 +0100193static s32 amd8111_access(struct i2c_adapter * adap, u16 addr,
194 unsigned short flags, char read_write, u8 command, int size,
195 union i2c_smbus_data * data)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196{
197 struct amd_smbus *smbus = adap->algo_data;
198 unsigned char protocol, len, pec, temp[2];
Julia Lawall9cb2c272010-10-24 18:16:58 +0200199 int i, status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200
Jean Delvare88b9e752007-02-13 22:09:02 +0100201 protocol = (read_write == I2C_SMBUS_READ) ? AMD_SMB_PRTCL_READ
202 : AMD_SMB_PRTCL_WRITE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203 pec = (flags & I2C_CLIENT_PEC) ? AMD_SMB_PRTCL_PEC : 0;
204
205 switch (size) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206 case I2C_SMBUS_QUICK:
207 protocol |= AMD_SMB_PRTCL_QUICK;
208 read_write = I2C_SMBUS_WRITE;
209 break;
210
211 case I2C_SMBUS_BYTE:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200212 if (read_write == I2C_SMBUS_WRITE) {
213 status = amd_ec_write(smbus, AMD_SMB_CMD,
214 command);
215 if (status)
216 return status;
217 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218 protocol |= AMD_SMB_PRTCL_BYTE;
219 break;
220
221 case I2C_SMBUS_BYTE_DATA:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200222 status = amd_ec_write(smbus, AMD_SMB_CMD, command);
223 if (status)
224 return status;
225 if (read_write == I2C_SMBUS_WRITE) {
226 status = amd_ec_write(smbus, AMD_SMB_DATA,
227 data->byte);
228 if (status)
229 return status;
230 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231 protocol |= AMD_SMB_PRTCL_BYTE_DATA;
232 break;
233
234 case I2C_SMBUS_WORD_DATA:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200235 status = amd_ec_write(smbus, AMD_SMB_CMD, command);
236 if (status)
237 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238 if (read_write == I2C_SMBUS_WRITE) {
Julia Lawall9cb2c272010-10-24 18:16:58 +0200239 status = amd_ec_write(smbus, AMD_SMB_DATA,
240 data->word & 0xff);
241 if (status)
242 return status;
243 status = amd_ec_write(smbus, AMD_SMB_DATA + 1,
244 data->word >> 8);
245 if (status)
246 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 }
248 protocol |= AMD_SMB_PRTCL_WORD_DATA | pec;
249 break;
250
251 case I2C_SMBUS_BLOCK_DATA:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200252 status = amd_ec_write(smbus, AMD_SMB_CMD, command);
253 if (status)
254 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 if (read_write == I2C_SMBUS_WRITE) {
Jean Delvare88b9e752007-02-13 22:09:02 +0100256 len = min_t(u8, data->block[0],
257 I2C_SMBUS_BLOCK_MAX);
Julia Lawall9cb2c272010-10-24 18:16:58 +0200258 status = amd_ec_write(smbus, AMD_SMB_BCNT, len);
259 if (status)
260 return status;
261 for (i = 0; i < len; i++) {
262 status =
263 amd_ec_write(smbus, AMD_SMB_DATA + i,
264 data->block[i + 1]);
265 if (status)
266 return status;
267 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268 }
269 protocol |= AMD_SMB_PRTCL_BLOCK_DATA | pec;
270 break;
271
272 case I2C_SMBUS_I2C_BLOCK_DATA:
Jean Delvare88b9e752007-02-13 22:09:02 +0100273 len = min_t(u8, data->block[0],
274 I2C_SMBUS_BLOCK_MAX);
Julia Lawall9cb2c272010-10-24 18:16:58 +0200275 status = amd_ec_write(smbus, AMD_SMB_CMD, command);
276 if (status)
277 return status;
278 status = amd_ec_write(smbus, AMD_SMB_BCNT, len);
279 if (status)
280 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 if (read_write == I2C_SMBUS_WRITE)
Julia Lawall9cb2c272010-10-24 18:16:58 +0200282 for (i = 0; i < len; i++) {
283 status =
284 amd_ec_write(smbus, AMD_SMB_DATA + i,
285 data->block[i + 1]);
286 if (status)
287 return status;
288 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 protocol |= AMD_SMB_PRTCL_I2C_BLOCK_DATA;
290 break;
291
292 case I2C_SMBUS_PROC_CALL:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200293 status = amd_ec_write(smbus, AMD_SMB_CMD, command);
294 if (status)
295 return status;
296 status = amd_ec_write(smbus, AMD_SMB_DATA,
297 data->word & 0xff);
298 if (status)
299 return status;
300 status = amd_ec_write(smbus, AMD_SMB_DATA + 1,
301 data->word >> 8);
302 if (status)
303 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304 protocol = AMD_SMB_PRTCL_PROC_CALL | pec;
305 read_write = I2C_SMBUS_READ;
306 break;
307
308 case I2C_SMBUS_BLOCK_PROC_CALL:
Jean Delvare58791fd2007-03-22 19:49:00 +0100309 len = min_t(u8, data->block[0],
310 I2C_SMBUS_BLOCK_MAX - 1);
Julia Lawall9cb2c272010-10-24 18:16:58 +0200311 status = amd_ec_write(smbus, AMD_SMB_CMD, command);
312 if (status)
313 return status;
314 status = amd_ec_write(smbus, AMD_SMB_BCNT, len);
315 if (status)
316 return status;
317 for (i = 0; i < len; i++) {
318 status = amd_ec_write(smbus, AMD_SMB_DATA + i,
319 data->block[i + 1]);
320 if (status)
321 return status;
322 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 protocol = AMD_SMB_PRTCL_BLOCK_PROC_CALL | pec;
324 read_write = I2C_SMBUS_READ;
325 break;
326
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 default:
328 dev_warn(&adap->dev, "Unsupported transaction %d\n", size);
David Brownell97140342008-07-14 22:38:25 +0200329 return -EOPNOTSUPP;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330 }
331
Julia Lawall9cb2c272010-10-24 18:16:58 +0200332 status = amd_ec_write(smbus, AMD_SMB_ADDR, addr << 1);
333 if (status)
334 return status;
335 status = amd_ec_write(smbus, AMD_SMB_PRTCL, protocol);
336 if (status)
337 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
Julia Lawall9cb2c272010-10-24 18:16:58 +0200339 status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
340 if (status)
341 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
343 if (~temp[0] & AMD_SMB_STS_DONE) {
344 udelay(500);
Julia Lawall9cb2c272010-10-24 18:16:58 +0200345 status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
346 if (status)
347 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 }
349
350 if (~temp[0] & AMD_SMB_STS_DONE) {
351 msleep(1);
Julia Lawall9cb2c272010-10-24 18:16:58 +0200352 status = amd_ec_read(smbus, AMD_SMB_STS, temp + 0);
353 if (status)
354 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 }
356
357 if ((~temp[0] & AMD_SMB_STS_DONE) || (temp[0] & AMD_SMB_STS_STATUS))
David Brownell97140342008-07-14 22:38:25 +0200358 return -EIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
360 if (read_write == I2C_SMBUS_WRITE)
361 return 0;
362
363 switch (size) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 case I2C_SMBUS_BYTE:
365 case I2C_SMBUS_BYTE_DATA:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200366 status = amd_ec_read(smbus, AMD_SMB_DATA, &data->byte);
367 if (status)
368 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 break;
370
371 case I2C_SMBUS_WORD_DATA:
372 case I2C_SMBUS_PROC_CALL:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200373 status = amd_ec_read(smbus, AMD_SMB_DATA, temp + 0);
374 if (status)
375 return status;
376 status = amd_ec_read(smbus, AMD_SMB_DATA + 1, temp + 1);
377 if (status)
378 return status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 data->word = (temp[1] << 8) | temp[0];
380 break;
381
382 case I2C_SMBUS_BLOCK_DATA:
383 case I2C_SMBUS_BLOCK_PROC_CALL:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200384 status = amd_ec_read(smbus, AMD_SMB_BCNT, &len);
385 if (status)
386 return status;
Jean Delvare88b9e752007-02-13 22:09:02 +0100387 len = min_t(u8, len, I2C_SMBUS_BLOCK_MAX);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 case I2C_SMBUS_I2C_BLOCK_DATA:
Julia Lawall9cb2c272010-10-24 18:16:58 +0200389 for (i = 0; i < len; i++) {
390 status = amd_ec_read(smbus, AMD_SMB_DATA + i,
391 data->block + i + 1);
392 if (status)
393 return status;
394 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 data->block[0] = len;
396 break;
397 }
398
399 return 0;
400}
401
402
403static u32 amd8111_func(struct i2c_adapter *adapter)
404{
Jean Delvare88b9e752007-02-13 22:09:02 +0100405 return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
406 I2C_FUNC_SMBUS_BYTE_DATA |
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BLOCK_DATA |
408 I2C_FUNC_SMBUS_PROC_CALL | I2C_FUNC_SMBUS_BLOCK_PROC_CALL |
David Brownell6662cbb2007-10-13 23:56:33 +0200409 I2C_FUNC_SMBUS_I2C_BLOCK | I2C_FUNC_SMBUS_PEC;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410}
411
Jean Delvare8f9082c2006-09-03 22:39:46 +0200412static const struct i2c_algorithm smbus_algorithm = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 .smbus_xfer = amd8111_access,
414 .functionality = amd8111_func,
415};
416
417
Márton Németh4111ecd2010-03-02 12:23:37 +0100418static const struct pci_device_id amd8111_ids[] = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700419 { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS2) },
420 { 0, }
421};
422
423MODULE_DEVICE_TABLE (pci, amd8111_ids);
424
Jean Delvare88b9e752007-02-13 22:09:02 +0100425static int __devinit amd8111_probe(struct pci_dev *dev,
426 const struct pci_device_id *id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427{
428 struct amd_smbus *smbus;
Jean Delvare88b9e752007-02-13 22:09:02 +0100429 int error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430
Jean Delvare88b9e752007-02-13 22:09:02 +0100431 if (!(pci_resource_flags(dev, 0) & IORESOURCE_IO))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432 return -ENODEV;
433
Deepak Saxena5263ebb2005-10-17 23:09:43 +0200434 smbus = kzalloc(sizeof(struct amd_smbus), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 if (!smbus)
436 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
438 smbus->dev = dev;
439 smbus->base = pci_resource_start(dev, 0);
440 smbus->size = pci_resource_len(dev, 0);
441
Jean Delvare54fb4a052008-07-14 22:38:33 +0200442 error = acpi_check_resource_conflict(&dev->resource[0]);
Jean Delvare18669ea2009-10-04 22:53:45 +0200443 if (error) {
444 error = -ENODEV;
Jean Delvare54fb4a052008-07-14 22:38:33 +0200445 goto out_kfree;
Jean Delvare18669ea2009-10-04 22:53:45 +0200446 }
Jean Delvare54fb4a052008-07-14 22:38:33 +0200447
Jean Delvare88b9e752007-02-13 22:09:02 +0100448 if (!request_region(smbus->base, smbus->size, amd8111_driver.name)) {
449 error = -EBUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700450 goto out_kfree;
Jean Delvare88b9e752007-02-13 22:09:02 +0100451 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
453 smbus->adapter.owner = THIS_MODULE;
David Brownell2096b952007-05-01 23:26:28 +0200454 snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),
Linus Torvalds1da177e2005-04-16 15:20:36 -0700455 "SMBus2 AMD8111 adapter at %04x", smbus->base);
Jean Delvare3401b2f2008-07-14 22:38:29 +0200456 smbus->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 smbus->adapter.algo = &smbus_algorithm;
458 smbus->adapter.algo_data = smbus;
459
Robert P. J. Day405ae7d2007-02-17 19:13:42 +0100460 /* set up the sysfs linkage to our parent device */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 smbus->adapter.dev.parent = &dev->dev;
462
Jean Delvare88b9e752007-02-13 22:09:02 +0100463 pci_write_config_dword(smbus->dev, AMD_PCI_MISC, 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 error = i2c_add_adapter(&smbus->adapter);
465 if (error)
466 goto out_release_region;
467
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 pci_set_drvdata(dev, smbus);
469 return 0;
470
471 out_release_region:
472 release_region(smbus->base, smbus->size);
473 out_kfree:
474 kfree(smbus);
Jean Delvare88b9e752007-02-13 22:09:02 +0100475 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476}
477
Linus Torvalds1da177e2005-04-16 15:20:36 -0700478static void __devexit amd8111_remove(struct pci_dev *dev)
479{
480 struct amd_smbus *smbus = pci_get_drvdata(dev);
481
482 i2c_del_adapter(&smbus->adapter);
483 release_region(smbus->base, smbus->size);
484 kfree(smbus);
485}
486
487static struct pci_driver amd8111_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700488 .name = "amd8111_smbus2",
489 .id_table = amd8111_ids,
490 .probe = amd8111_probe,
491 .remove = __devexit_p(amd8111_remove),
492};
493
494static int __init i2c_amd8111_init(void)
495{
496 return pci_register_driver(&amd8111_driver);
497}
498
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499static void __exit i2c_amd8111_exit(void)
500{
501 pci_unregister_driver(&amd8111_driver);
502}
503
504module_init(i2c_amd8111_init);
505module_exit(i2c_amd8111_exit);