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1da177e4 | 1 | /* |
1da177e4 LT |
2 | Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, |
3 | Philip Edelbrock <phil@netroedge.com>, and Mark D. Studebaker | |
4 | <mdsxyz123@yahoo.com> | |
cf898dc5 | 5 | Copyright (C) 2007, 2008 Jean Delvare <khali@linux-fr.org> |
0cd96eb0 DW |
6 | Copyright (C) 2010 Intel Corporation, |
7 | David Woodhouse <dwmw2@infradead.org> | |
1da177e4 LT |
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 | ||
24 | /* | |
ae7b0497 JD |
25 | Supports the following Intel I/O Controller Hubs (ICH): |
26 | ||
27 | I/O Block I2C | |
28 | region SMBus Block proc. block | |
29 | Chip name PCI ID size PEC buffer call read | |
30 | ---------------------------------------------------------------------- | |
31 | 82801AA (ICH) 0x2413 16 no no no no | |
32 | 82801AB (ICH0) 0x2423 16 no no no no | |
33 | 82801BA (ICH2) 0x2443 16 no no no no | |
34 | 82801CA (ICH3) 0x2483 32 soft no no no | |
35 | 82801DB (ICH4) 0x24c3 32 hard yes no no | |
36 | 82801E (ICH5) 0x24d3 32 hard yes yes yes | |
37 | 6300ESB 0x25a4 32 hard yes yes yes | |
38 | 82801F (ICH6) 0x266a 32 hard yes yes yes | |
39 | 6310ESB/6320ESB 0x269b 32 hard yes yes yes | |
40 | 82801G (ICH7) 0x27da 32 hard yes yes yes | |
41 | 82801H (ICH8) 0x283e 32 hard yes yes yes | |
42 | 82801I (ICH9) 0x2930 32 hard yes yes yes | |
cb04e95b | 43 | EP80579 (Tolapai) 0x5032 32 hard yes yes yes |
d28dc711 GJ |
44 | ICH10 0x3a30 32 hard yes yes yes |
45 | ICH10 0x3a60 32 hard yes yes yes | |
cb04e95b | 46 | 5/3400 Series (PCH) 0x3b30 32 hard yes yes yes |
39376434 | 47 | Cougar Point (PCH) 0x1c22 32 hard yes yes yes |
e30d9859 | 48 | Patsburg (PCH) 0x1d22 32 hard yes yes yes |
55fee8d7 DW |
49 | Patsburg (PCH) IDF 0x1d70 32 hard yes yes yes |
50 | Patsburg (PCH) IDF 0x1d71 32 hard yes yes yes | |
51 | Patsburg (PCH) IDF 0x1d72 32 hard yes yes yes | |
ae7b0497 JD |
52 | |
53 | Features supported by this driver: | |
54 | Software PEC no | |
55 | Hardware PEC yes | |
56 | Block buffer yes | |
57 | Block process call transaction no | |
6342064c | 58 | I2C block read transaction yes (doesn't use the block buffer) |
55fee8d7 | 59 | Slave mode no |
ae7b0497 JD |
60 | |
61 | See the file Documentation/i2c/busses/i2c-i801 for details. | |
1da177e4 LT |
62 | */ |
63 | ||
1da177e4 LT |
64 | #include <linux/module.h> |
65 | #include <linux/pci.h> | |
66 | #include <linux/kernel.h> | |
67 | #include <linux/stddef.h> | |
68 | #include <linux/delay.h> | |
1da177e4 LT |
69 | #include <linux/ioport.h> |
70 | #include <linux/init.h> | |
71 | #include <linux/i2c.h> | |
54fb4a05 | 72 | #include <linux/acpi.h> |
1561bfe5 | 73 | #include <linux/io.h> |
fa5bfab7 | 74 | #include <linux/dmi.h> |
1da177e4 | 75 | |
1da177e4 | 76 | /* I801 SMBus address offsets */ |
0cd96eb0 DW |
77 | #define SMBHSTSTS(p) (0 + (p)->smba) |
78 | #define SMBHSTCNT(p) (2 + (p)->smba) | |
79 | #define SMBHSTCMD(p) (3 + (p)->smba) | |
80 | #define SMBHSTADD(p) (4 + (p)->smba) | |
81 | #define SMBHSTDAT0(p) (5 + (p)->smba) | |
82 | #define SMBHSTDAT1(p) (6 + (p)->smba) | |
83 | #define SMBBLKDAT(p) (7 + (p)->smba) | |
84 | #define SMBPEC(p) (8 + (p)->smba) /* ICH3 and later */ | |
85 | #define SMBAUXSTS(p) (12 + (p)->smba) /* ICH4 and later */ | |
86 | #define SMBAUXCTL(p) (13 + (p)->smba) /* ICH4 and later */ | |
1da177e4 LT |
87 | |
88 | /* PCI Address Constants */ | |
6dcc19df | 89 | #define SMBBAR 4 |
1da177e4 | 90 | #define SMBHSTCFG 0x040 |
1da177e4 LT |
91 | |
92 | /* Host configuration bits for SMBHSTCFG */ | |
93 | #define SMBHSTCFG_HST_EN 1 | |
94 | #define SMBHSTCFG_SMB_SMI_EN 2 | |
95 | #define SMBHSTCFG_I2C_EN 4 | |
96 | ||
ca8b9e32 OR |
97 | /* Auxillary control register bits, ICH4+ only */ |
98 | #define SMBAUXCTL_CRC 1 | |
99 | #define SMBAUXCTL_E32B 2 | |
100 | ||
101 | /* kill bit for SMBHSTCNT */ | |
102 | #define SMBHSTCNT_KILL 2 | |
103 | ||
1da177e4 LT |
104 | /* Other settings */ |
105 | #define MAX_TIMEOUT 100 | |
106 | #define ENABLE_INT9 0 /* set to 0x01 to enable - untested */ | |
107 | ||
108 | /* I801 command constants */ | |
109 | #define I801_QUICK 0x00 | |
110 | #define I801_BYTE 0x04 | |
111 | #define I801_BYTE_DATA 0x08 | |
112 | #define I801_WORD_DATA 0x0C | |
ae7b0497 | 113 | #define I801_PROC_CALL 0x10 /* unimplemented */ |
1da177e4 | 114 | #define I801_BLOCK_DATA 0x14 |
6342064c | 115 | #define I801_I2C_BLOCK_DATA 0x18 /* ICH5 and later */ |
1da177e4 | 116 | #define I801_BLOCK_LAST 0x34 |
6342064c | 117 | #define I801_I2C_BLOCK_LAST 0x38 /* ICH5 and later */ |
1da177e4 | 118 | #define I801_START 0x40 |
ae7b0497 | 119 | #define I801_PEC_EN 0x80 /* ICH3 and later */ |
1da177e4 | 120 | |
ca8b9e32 OR |
121 | /* I801 Hosts Status register bits */ |
122 | #define SMBHSTSTS_BYTE_DONE 0x80 | |
123 | #define SMBHSTSTS_INUSE_STS 0x40 | |
124 | #define SMBHSTSTS_SMBALERT_STS 0x20 | |
125 | #define SMBHSTSTS_FAILED 0x10 | |
126 | #define SMBHSTSTS_BUS_ERR 0x08 | |
127 | #define SMBHSTSTS_DEV_ERR 0x04 | |
128 | #define SMBHSTSTS_INTR 0x02 | |
129 | #define SMBHSTSTS_HOST_BUSY 0x01 | |
1da177e4 | 130 | |
cf898dc5 JD |
131 | #define STATUS_FLAGS (SMBHSTSTS_BYTE_DONE | SMBHSTSTS_FAILED | \ |
132 | SMBHSTSTS_BUS_ERR | SMBHSTSTS_DEV_ERR | \ | |
133 | SMBHSTSTS_INTR) | |
134 | ||
55fee8d7 DW |
135 | /* Patsburg also has three 'Integrated Device Function' SMBus controllers */ |
136 | #define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF0 0x1d70 | |
137 | #define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF1 0x1d71 | |
138 | #define PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF2 0x1d72 | |
139 | ||
0cd96eb0 DW |
140 | struct i801_priv { |
141 | struct i2c_adapter adapter; | |
142 | unsigned long smba; | |
143 | unsigned char original_hstcfg; | |
144 | struct pci_dev *pci_dev; | |
145 | unsigned int features; | |
146 | }; | |
147 | ||
d6072f84 | 148 | static struct pci_driver i801_driver; |
369f6f4a JD |
149 | |
150 | #define FEATURE_SMBUS_PEC (1 << 0) | |
151 | #define FEATURE_BLOCK_BUFFER (1 << 1) | |
152 | #define FEATURE_BLOCK_PROC (1 << 2) | |
153 | #define FEATURE_I2C_BLOCK_READ (1 << 3) | |
1da177e4 | 154 | |
adff687d JD |
155 | static const char *i801_feature_names[] = { |
156 | "SMBus PEC", | |
157 | "Block buffer", | |
158 | "Block process call", | |
159 | "I2C block read", | |
160 | }; | |
161 | ||
162 | static unsigned int disable_features; | |
163 | module_param(disable_features, uint, S_IRUGO | S_IWUSR); | |
164 | MODULE_PARM_DESC(disable_features, "Disable selected driver features"); | |
165 | ||
cf898dc5 JD |
166 | /* Make sure the SMBus host is ready to start transmitting. |
167 | Return 0 if it is, -EBUSY if it is not. */ | |
0cd96eb0 | 168 | static int i801_check_pre(struct i801_priv *priv) |
1da177e4 | 169 | { |
2b73809d | 170 | int status; |
1da177e4 | 171 | |
0cd96eb0 | 172 | status = inb_p(SMBHSTSTS(priv)); |
cf898dc5 | 173 | if (status & SMBHSTSTS_HOST_BUSY) { |
0cd96eb0 | 174 | dev_err(&priv->pci_dev->dev, "SMBus is busy, can't use it!\n"); |
cf898dc5 JD |
175 | return -EBUSY; |
176 | } | |
177 | ||
178 | status &= STATUS_FLAGS; | |
179 | if (status) { | |
0cd96eb0 | 180 | dev_dbg(&priv->pci_dev->dev, "Clearing status flags (%02x)\n", |
2b73809d | 181 | status); |
0cd96eb0 DW |
182 | outb_p(status, SMBHSTSTS(priv)); |
183 | status = inb_p(SMBHSTSTS(priv)) & STATUS_FLAGS; | |
cf898dc5 | 184 | if (status) { |
0cd96eb0 | 185 | dev_err(&priv->pci_dev->dev, |
cf898dc5 JD |
186 | "Failed clearing status flags (%02x)\n", |
187 | status); | |
97140342 | 188 | return -EBUSY; |
1da177e4 LT |
189 | } |
190 | } | |
191 | ||
cf898dc5 JD |
192 | return 0; |
193 | } | |
1da177e4 | 194 | |
cf898dc5 | 195 | /* Convert the status register to an error code, and clear it. */ |
0cd96eb0 | 196 | static int i801_check_post(struct i801_priv *priv, int status, int timeout) |
cf898dc5 JD |
197 | { |
198 | int result = 0; | |
1da177e4 LT |
199 | |
200 | /* If the SMBus is still busy, we give up */ | |
cf898dc5 | 201 | if (timeout) { |
0cd96eb0 | 202 | dev_err(&priv->pci_dev->dev, "Transaction timeout\n"); |
ca8b9e32 | 203 | /* try to stop the current command */ |
0cd96eb0 DW |
204 | dev_dbg(&priv->pci_dev->dev, "Terminating the current operation\n"); |
205 | outb_p(inb_p(SMBHSTCNT(priv)) | SMBHSTCNT_KILL, | |
206 | SMBHSTCNT(priv)); | |
ca8b9e32 | 207 | msleep(1); |
0cd96eb0 DW |
208 | outb_p(inb_p(SMBHSTCNT(priv)) & (~SMBHSTCNT_KILL), |
209 | SMBHSTCNT(priv)); | |
cf898dc5 JD |
210 | |
211 | /* Check if it worked */ | |
0cd96eb0 | 212 | status = inb_p(SMBHSTSTS(priv)); |
cf898dc5 JD |
213 | if ((status & SMBHSTSTS_HOST_BUSY) || |
214 | !(status & SMBHSTSTS_FAILED)) | |
0cd96eb0 | 215 | dev_err(&priv->pci_dev->dev, |
cf898dc5 | 216 | "Failed terminating the transaction\n"); |
0cd96eb0 | 217 | outb_p(STATUS_FLAGS, SMBHSTSTS(priv)); |
cf898dc5 | 218 | return -ETIMEDOUT; |
1da177e4 LT |
219 | } |
220 | ||
2b73809d | 221 | if (status & SMBHSTSTS_FAILED) { |
97140342 | 222 | result = -EIO; |
0cd96eb0 | 223 | dev_err(&priv->pci_dev->dev, "Transaction failed\n"); |
cf898dc5 JD |
224 | } |
225 | if (status & SMBHSTSTS_DEV_ERR) { | |
226 | result = -ENXIO; | |
0cd96eb0 | 227 | dev_dbg(&priv->pci_dev->dev, "No response\n"); |
1da177e4 | 228 | } |
2b73809d | 229 | if (status & SMBHSTSTS_BUS_ERR) { |
dcb5c923 | 230 | result = -EAGAIN; |
0cd96eb0 | 231 | dev_dbg(&priv->pci_dev->dev, "Lost arbitration\n"); |
1da177e4 LT |
232 | } |
233 | ||
cf898dc5 JD |
234 | if (result) { |
235 | /* Clear error flags */ | |
0cd96eb0 DW |
236 | outb_p(status & STATUS_FLAGS, SMBHSTSTS(priv)); |
237 | status = inb_p(SMBHSTSTS(priv)) & STATUS_FLAGS; | |
cf898dc5 | 238 | if (status) { |
0cd96eb0 | 239 | dev_warn(&priv->pci_dev->dev, "Failed clearing status " |
cf898dc5 JD |
240 | "flags at end of transaction (%02x)\n", |
241 | status); | |
242 | } | |
1da177e4 LT |
243 | } |
244 | ||
1da177e4 LT |
245 | return result; |
246 | } | |
247 | ||
0cd96eb0 | 248 | static int i801_transaction(struct i801_priv *priv, int xact) |
cf898dc5 JD |
249 | { |
250 | int status; | |
251 | int result; | |
252 | int timeout = 0; | |
253 | ||
0cd96eb0 | 254 | result = i801_check_pre(priv); |
cf898dc5 JD |
255 | if (result < 0) |
256 | return result; | |
257 | ||
258 | /* the current contents of SMBHSTCNT can be overwritten, since PEC, | |
259 | * INTREN, SMBSCMD are passed in xact */ | |
0cd96eb0 | 260 | outb_p(xact | I801_START, SMBHSTCNT(priv)); |
cf898dc5 JD |
261 | |
262 | /* We will always wait for a fraction of a second! */ | |
263 | do { | |
264 | msleep(1); | |
0cd96eb0 | 265 | status = inb_p(SMBHSTSTS(priv)); |
cf898dc5 JD |
266 | } while ((status & SMBHSTSTS_HOST_BUSY) && (timeout++ < MAX_TIMEOUT)); |
267 | ||
0cd96eb0 | 268 | result = i801_check_post(priv, status, timeout > MAX_TIMEOUT); |
cf898dc5 JD |
269 | if (result < 0) |
270 | return result; | |
271 | ||
0cd96eb0 | 272 | outb_p(SMBHSTSTS_INTR, SMBHSTSTS(priv)); |
cf898dc5 JD |
273 | return 0; |
274 | } | |
275 | ||
ca8b9e32 | 276 | /* wait for INTR bit as advised by Intel */ |
0cd96eb0 | 277 | static void i801_wait_hwpec(struct i801_priv *priv) |
ca8b9e32 OR |
278 | { |
279 | int timeout = 0; | |
2b73809d | 280 | int status; |
ca8b9e32 OR |
281 | |
282 | do { | |
283 | msleep(1); | |
0cd96eb0 | 284 | status = inb_p(SMBHSTSTS(priv)); |
2b73809d | 285 | } while ((!(status & SMBHSTSTS_INTR)) |
ca8b9e32 OR |
286 | && (timeout++ < MAX_TIMEOUT)); |
287 | ||
4ccc28f7 | 288 | if (timeout > MAX_TIMEOUT) |
0cd96eb0 | 289 | dev_dbg(&priv->pci_dev->dev, "PEC Timeout!\n"); |
4ccc28f7 | 290 | |
0cd96eb0 | 291 | outb_p(status, SMBHSTSTS(priv)); |
ca8b9e32 OR |
292 | } |
293 | ||
0cd96eb0 DW |
294 | static int i801_block_transaction_by_block(struct i801_priv *priv, |
295 | union i2c_smbus_data *data, | |
7edcb9ab OR |
296 | char read_write, int hwpec) |
297 | { | |
298 | int i, len; | |
97140342 | 299 | int status; |
7edcb9ab | 300 | |
0cd96eb0 | 301 | inb_p(SMBHSTCNT(priv)); /* reset the data buffer index */ |
7edcb9ab OR |
302 | |
303 | /* Use 32-byte buffer to process this transaction */ | |
304 | if (read_write == I2C_SMBUS_WRITE) { | |
305 | len = data->block[0]; | |
0cd96eb0 | 306 | outb_p(len, SMBHSTDAT0(priv)); |
7edcb9ab | 307 | for (i = 0; i < len; i++) |
0cd96eb0 | 308 | outb_p(data->block[i+1], SMBBLKDAT(priv)); |
7edcb9ab OR |
309 | } |
310 | ||
0cd96eb0 | 311 | status = i801_transaction(priv, I801_BLOCK_DATA | ENABLE_INT9 | |
97140342 DB |
312 | I801_PEC_EN * hwpec); |
313 | if (status) | |
314 | return status; | |
7edcb9ab OR |
315 | |
316 | if (read_write == I2C_SMBUS_READ) { | |
0cd96eb0 | 317 | len = inb_p(SMBHSTDAT0(priv)); |
7edcb9ab | 318 | if (len < 1 || len > I2C_SMBUS_BLOCK_MAX) |
97140342 | 319 | return -EPROTO; |
7edcb9ab OR |
320 | |
321 | data->block[0] = len; | |
322 | for (i = 0; i < len; i++) | |
0cd96eb0 | 323 | data->block[i + 1] = inb_p(SMBBLKDAT(priv)); |
7edcb9ab OR |
324 | } |
325 | return 0; | |
326 | } | |
327 | ||
0cd96eb0 DW |
328 | static int i801_block_transaction_byte_by_byte(struct i801_priv *priv, |
329 | union i2c_smbus_data *data, | |
6342064c JD |
330 | char read_write, int command, |
331 | int hwpec) | |
1da177e4 LT |
332 | { |
333 | int i, len; | |
334 | int smbcmd; | |
2b73809d | 335 | int status; |
cf898dc5 | 336 | int result; |
1da177e4 | 337 | int timeout; |
cf898dc5 | 338 | |
0cd96eb0 | 339 | result = i801_check_pre(priv); |
cf898dc5 JD |
340 | if (result < 0) |
341 | return result; | |
1da177e4 | 342 | |
7edcb9ab | 343 | len = data->block[0]; |
1da177e4 LT |
344 | |
345 | if (read_write == I2C_SMBUS_WRITE) { | |
0cd96eb0 DW |
346 | outb_p(len, SMBHSTDAT0(priv)); |
347 | outb_p(data->block[1], SMBBLKDAT(priv)); | |
1da177e4 LT |
348 | } |
349 | ||
350 | for (i = 1; i <= len; i++) { | |
6342064c JD |
351 | if (i == len && read_write == I2C_SMBUS_READ) { |
352 | if (command == I2C_SMBUS_I2C_BLOCK_DATA) | |
353 | smbcmd = I801_I2C_BLOCK_LAST; | |
354 | else | |
355 | smbcmd = I801_BLOCK_LAST; | |
356 | } else { | |
357 | if (command == I2C_SMBUS_I2C_BLOCK_DATA | |
358 | && read_write == I2C_SMBUS_READ) | |
359 | smbcmd = I801_I2C_BLOCK_DATA; | |
360 | else | |
361 | smbcmd = I801_BLOCK_DATA; | |
362 | } | |
0cd96eb0 | 363 | outb_p(smbcmd | ENABLE_INT9, SMBHSTCNT(priv)); |
1da177e4 | 364 | |
1da177e4 | 365 | if (i == 1) |
0cd96eb0 DW |
366 | outb_p(inb(SMBHSTCNT(priv)) | I801_START, |
367 | SMBHSTCNT(priv)); | |
1da177e4 LT |
368 | |
369 | /* We will always wait for a fraction of a second! */ | |
370 | timeout = 0; | |
371 | do { | |
1da177e4 | 372 | msleep(1); |
0cd96eb0 | 373 | status = inb_p(SMBHSTSTS(priv)); |
3fb21c64 IM |
374 | } while ((!(status & SMBHSTSTS_BYTE_DONE)) |
375 | && (timeout++ < MAX_TIMEOUT)); | |
1da177e4 | 376 | |
0cd96eb0 | 377 | result = i801_check_post(priv, status, timeout > MAX_TIMEOUT); |
cf898dc5 JD |
378 | if (result < 0) |
379 | return result; | |
1da177e4 | 380 | |
6342064c JD |
381 | if (i == 1 && read_write == I2C_SMBUS_READ |
382 | && command != I2C_SMBUS_I2C_BLOCK_DATA) { | |
0cd96eb0 | 383 | len = inb_p(SMBHSTDAT0(priv)); |
cf898dc5 | 384 | if (len < 1 || len > I2C_SMBUS_BLOCK_MAX) { |
0cd96eb0 | 385 | dev_err(&priv->pci_dev->dev, |
cf898dc5 JD |
386 | "Illegal SMBus block read size %d\n", |
387 | len); | |
388 | /* Recover */ | |
0cd96eb0 DW |
389 | while (inb_p(SMBHSTSTS(priv)) & |
390 | SMBHSTSTS_HOST_BUSY) | |
391 | outb_p(SMBHSTSTS_BYTE_DONE, | |
392 | SMBHSTSTS(priv)); | |
393 | outb_p(SMBHSTSTS_INTR, SMBHSTSTS(priv)); | |
97140342 | 394 | return -EPROTO; |
cf898dc5 | 395 | } |
1da177e4 LT |
396 | data->block[0] = len; |
397 | } | |
398 | ||
399 | /* Retrieve/store value in SMBBLKDAT */ | |
400 | if (read_write == I2C_SMBUS_READ) | |
0cd96eb0 | 401 | data->block[i] = inb_p(SMBBLKDAT(priv)); |
1da177e4 | 402 | if (read_write == I2C_SMBUS_WRITE && i+1 <= len) |
0cd96eb0 | 403 | outb_p(data->block[i+1], SMBBLKDAT(priv)); |
1da177e4 | 404 | |
cf898dc5 | 405 | /* signals SMBBLKDAT ready */ |
0cd96eb0 | 406 | outb_p(SMBHSTSTS_BYTE_DONE | SMBHSTSTS_INTR, SMBHSTSTS(priv)); |
1da177e4 | 407 | } |
cf898dc5 JD |
408 | |
409 | return 0; | |
7edcb9ab | 410 | } |
1da177e4 | 411 | |
0cd96eb0 | 412 | static int i801_set_block_buffer_mode(struct i801_priv *priv) |
7edcb9ab | 413 | { |
0cd96eb0 DW |
414 | outb_p(inb_p(SMBAUXCTL(priv)) | SMBAUXCTL_E32B, SMBAUXCTL(priv)); |
415 | if ((inb_p(SMBAUXCTL(priv)) & SMBAUXCTL_E32B) == 0) | |
97140342 | 416 | return -EIO; |
7edcb9ab OR |
417 | return 0; |
418 | } | |
419 | ||
420 | /* Block transaction function */ | |
0cd96eb0 DW |
421 | static int i801_block_transaction(struct i801_priv *priv, |
422 | union i2c_smbus_data *data, char read_write, | |
7edcb9ab OR |
423 | int command, int hwpec) |
424 | { | |
425 | int result = 0; | |
426 | unsigned char hostc; | |
427 | ||
428 | if (command == I2C_SMBUS_I2C_BLOCK_DATA) { | |
429 | if (read_write == I2C_SMBUS_WRITE) { | |
430 | /* set I2C_EN bit in configuration register */ | |
0cd96eb0 DW |
431 | pci_read_config_byte(priv->pci_dev, SMBHSTCFG, &hostc); |
432 | pci_write_config_byte(priv->pci_dev, SMBHSTCFG, | |
7edcb9ab | 433 | hostc | SMBHSTCFG_I2C_EN); |
0cd96eb0 DW |
434 | } else if (!(priv->features & FEATURE_I2C_BLOCK_READ)) { |
435 | dev_err(&priv->pci_dev->dev, | |
6342064c | 436 | "I2C block read is unsupported!\n"); |
97140342 | 437 | return -EOPNOTSUPP; |
7edcb9ab OR |
438 | } |
439 | } | |
440 | ||
6342064c JD |
441 | if (read_write == I2C_SMBUS_WRITE |
442 | || command == I2C_SMBUS_I2C_BLOCK_DATA) { | |
7edcb9ab OR |
443 | if (data->block[0] < 1) |
444 | data->block[0] = 1; | |
445 | if (data->block[0] > I2C_SMBUS_BLOCK_MAX) | |
446 | data->block[0] = I2C_SMBUS_BLOCK_MAX; | |
447 | } else { | |
6342064c | 448 | data->block[0] = 32; /* max for SMBus block reads */ |
7edcb9ab OR |
449 | } |
450 | ||
c074c39d JD |
451 | /* Experience has shown that the block buffer can only be used for |
452 | SMBus (not I2C) block transactions, even though the datasheet | |
453 | doesn't mention this limitation. */ | |
0cd96eb0 | 454 | if ((priv->features & FEATURE_BLOCK_BUFFER) |
c074c39d | 455 | && command != I2C_SMBUS_I2C_BLOCK_DATA |
0cd96eb0 DW |
456 | && i801_set_block_buffer_mode(priv) == 0) |
457 | result = i801_block_transaction_by_block(priv, data, | |
458 | read_write, hwpec); | |
7edcb9ab | 459 | else |
0cd96eb0 DW |
460 | result = i801_block_transaction_byte_by_byte(priv, data, |
461 | read_write, | |
6342064c | 462 | command, hwpec); |
7edcb9ab OR |
463 | |
464 | if (result == 0 && hwpec) | |
0cd96eb0 | 465 | i801_wait_hwpec(priv); |
1da177e4 | 466 | |
6342064c JD |
467 | if (command == I2C_SMBUS_I2C_BLOCK_DATA |
468 | && read_write == I2C_SMBUS_WRITE) { | |
1da177e4 | 469 | /* restore saved configuration register value */ |
0cd96eb0 | 470 | pci_write_config_byte(priv->pci_dev, SMBHSTCFG, hostc); |
1da177e4 LT |
471 | } |
472 | return result; | |
473 | } | |
474 | ||
97140342 | 475 | /* Return negative errno on error. */ |
3fb21c64 | 476 | static s32 i801_access(struct i2c_adapter *adap, u16 addr, |
1da177e4 | 477 | unsigned short flags, char read_write, u8 command, |
3fb21c64 | 478 | int size, union i2c_smbus_data *data) |
1da177e4 | 479 | { |
e8aac4a9 | 480 | int hwpec; |
1da177e4 LT |
481 | int block = 0; |
482 | int ret, xact = 0; | |
0cd96eb0 | 483 | struct i801_priv *priv = i2c_get_adapdata(adap); |
1da177e4 | 484 | |
0cd96eb0 | 485 | hwpec = (priv->features & FEATURE_SMBUS_PEC) && (flags & I2C_CLIENT_PEC) |
e8aac4a9 JD |
486 | && size != I2C_SMBUS_QUICK |
487 | && size != I2C_SMBUS_I2C_BLOCK_DATA; | |
1da177e4 LT |
488 | |
489 | switch (size) { | |
490 | case I2C_SMBUS_QUICK: | |
491 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
0cd96eb0 | 492 | SMBHSTADD(priv)); |
1da177e4 LT |
493 | xact = I801_QUICK; |
494 | break; | |
495 | case I2C_SMBUS_BYTE: | |
496 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
0cd96eb0 | 497 | SMBHSTADD(priv)); |
1da177e4 | 498 | if (read_write == I2C_SMBUS_WRITE) |
0cd96eb0 | 499 | outb_p(command, SMBHSTCMD(priv)); |
1da177e4 LT |
500 | xact = I801_BYTE; |
501 | break; | |
502 | case I2C_SMBUS_BYTE_DATA: | |
503 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
0cd96eb0 DW |
504 | SMBHSTADD(priv)); |
505 | outb_p(command, SMBHSTCMD(priv)); | |
1da177e4 | 506 | if (read_write == I2C_SMBUS_WRITE) |
0cd96eb0 | 507 | outb_p(data->byte, SMBHSTDAT0(priv)); |
1da177e4 LT |
508 | xact = I801_BYTE_DATA; |
509 | break; | |
510 | case I2C_SMBUS_WORD_DATA: | |
511 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
0cd96eb0 DW |
512 | SMBHSTADD(priv)); |
513 | outb_p(command, SMBHSTCMD(priv)); | |
1da177e4 | 514 | if (read_write == I2C_SMBUS_WRITE) { |
0cd96eb0 DW |
515 | outb_p(data->word & 0xff, SMBHSTDAT0(priv)); |
516 | outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1(priv)); | |
1da177e4 LT |
517 | } |
518 | xact = I801_WORD_DATA; | |
519 | break; | |
520 | case I2C_SMBUS_BLOCK_DATA: | |
1da177e4 | 521 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
0cd96eb0 DW |
522 | SMBHSTADD(priv)); |
523 | outb_p(command, SMBHSTCMD(priv)); | |
1da177e4 LT |
524 | block = 1; |
525 | break; | |
6342064c JD |
526 | case I2C_SMBUS_I2C_BLOCK_DATA: |
527 | /* NB: page 240 of ICH5 datasheet shows that the R/#W | |
528 | * bit should be cleared here, even when reading */ | |
0cd96eb0 | 529 | outb_p((addr & 0x7f) << 1, SMBHSTADD(priv)); |
6342064c JD |
530 | if (read_write == I2C_SMBUS_READ) { |
531 | /* NB: page 240 of ICH5 datasheet also shows | |
532 | * that DATA1 is the cmd field when reading */ | |
0cd96eb0 | 533 | outb_p(command, SMBHSTDAT1(priv)); |
6342064c | 534 | } else |
0cd96eb0 | 535 | outb_p(command, SMBHSTCMD(priv)); |
6342064c JD |
536 | block = 1; |
537 | break; | |
1da177e4 | 538 | default: |
0cd96eb0 DW |
539 | dev_err(&priv->pci_dev->dev, "Unsupported transaction %d\n", |
540 | size); | |
97140342 | 541 | return -EOPNOTSUPP; |
1da177e4 LT |
542 | } |
543 | ||
ca8b9e32 | 544 | if (hwpec) /* enable/disable hardware PEC */ |
0cd96eb0 | 545 | outb_p(inb_p(SMBAUXCTL(priv)) | SMBAUXCTL_CRC, SMBAUXCTL(priv)); |
ca8b9e32 | 546 | else |
0cd96eb0 DW |
547 | outb_p(inb_p(SMBAUXCTL(priv)) & (~SMBAUXCTL_CRC), |
548 | SMBAUXCTL(priv)); | |
e8aac4a9 | 549 | |
3fb21c64 | 550 | if (block) |
0cd96eb0 DW |
551 | ret = i801_block_transaction(priv, data, read_write, size, |
552 | hwpec); | |
7edcb9ab | 553 | else |
0cd96eb0 | 554 | ret = i801_transaction(priv, xact | ENABLE_INT9); |
1da177e4 | 555 | |
c79cfbac | 556 | /* Some BIOSes don't like it when PEC is enabled at reboot or resume |
7edcb9ab OR |
557 | time, so we forcibly disable it after every transaction. Turn off |
558 | E32B for the same reason. */ | |
a0921b6c | 559 | if (hwpec || block) |
0cd96eb0 DW |
560 | outb_p(inb_p(SMBAUXCTL(priv)) & |
561 | ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B), SMBAUXCTL(priv)); | |
c79cfbac | 562 | |
3fb21c64 | 563 | if (block) |
1da177e4 | 564 | return ret; |
3fb21c64 | 565 | if (ret) |
97140342 | 566 | return ret; |
1da177e4 LT |
567 | if ((read_write == I2C_SMBUS_WRITE) || (xact == I801_QUICK)) |
568 | return 0; | |
569 | ||
570 | switch (xact & 0x7f) { | |
571 | case I801_BYTE: /* Result put in SMBHSTDAT0 */ | |
572 | case I801_BYTE_DATA: | |
0cd96eb0 | 573 | data->byte = inb_p(SMBHSTDAT0(priv)); |
1da177e4 LT |
574 | break; |
575 | case I801_WORD_DATA: | |
0cd96eb0 DW |
576 | data->word = inb_p(SMBHSTDAT0(priv)) + |
577 | (inb_p(SMBHSTDAT1(priv)) << 8); | |
1da177e4 LT |
578 | break; |
579 | } | |
580 | return 0; | |
581 | } | |
582 | ||
583 | ||
584 | static u32 i801_func(struct i2c_adapter *adapter) | |
585 | { | |
0cd96eb0 DW |
586 | struct i801_priv *priv = i2c_get_adapdata(adapter); |
587 | ||
1da177e4 | 588 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | |
369f6f4a JD |
589 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | |
590 | I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK | | |
0cd96eb0 DW |
591 | ((priv->features & FEATURE_SMBUS_PEC) ? I2C_FUNC_SMBUS_PEC : 0) | |
592 | ((priv->features & FEATURE_I2C_BLOCK_READ) ? | |
6342064c | 593 | I2C_FUNC_SMBUS_READ_I2C_BLOCK : 0); |
1da177e4 LT |
594 | } |
595 | ||
8f9082c5 | 596 | static const struct i2c_algorithm smbus_algorithm = { |
1da177e4 LT |
597 | .smbus_xfer = i801_access, |
598 | .functionality = i801_func, | |
599 | }; | |
600 | ||
4111ecd2 | 601 | static const struct pci_device_id i801_ids[] = { |
1da177e4 LT |
602 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_3) }, |
603 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_3) }, | |
604 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_2) }, | |
605 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_3) }, | |
606 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_3) }, | |
607 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_3) }, | |
608 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_4) }, | |
609 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_16) }, | |
610 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_17) }, | |
b0a70b57 | 611 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_17) }, |
8254fc4a | 612 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_5) }, |
adbc2a10 | 613 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_6) }, |
cb04e95b | 614 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EP80579_1) }, |
d28dc711 GJ |
615 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_4) }, |
616 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_5) }, | |
cb04e95b SH |
617 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5_3400_SERIES_SMBUS) }, |
618 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_COUGARPOINT_SMBUS) }, | |
e30d9859 | 619 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS) }, |
55fee8d7 DW |
620 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF0) }, |
621 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF1) }, | |
622 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PATSBURG_SMBUS_IDF2) }, | |
1da177e4 LT |
623 | { 0, } |
624 | }; | |
625 | ||
3fb21c64 | 626 | MODULE_DEVICE_TABLE(pci, i801_ids); |
1da177e4 | 627 | |
1561bfe5 JD |
628 | #if defined CONFIG_INPUT_APANEL || defined CONFIG_INPUT_APANEL_MODULE |
629 | static unsigned char apanel_addr; | |
630 | ||
631 | /* Scan the system ROM for the signature "FJKEYINF" */ | |
632 | static __init const void __iomem *bios_signature(const void __iomem *bios) | |
633 | { | |
634 | ssize_t offset; | |
635 | const unsigned char signature[] = "FJKEYINF"; | |
636 | ||
637 | for (offset = 0; offset < 0x10000; offset += 0x10) { | |
638 | if (check_signature(bios + offset, signature, | |
639 | sizeof(signature)-1)) | |
640 | return bios + offset; | |
641 | } | |
642 | return NULL; | |
643 | } | |
644 | ||
645 | static void __init input_apanel_init(void) | |
646 | { | |
647 | void __iomem *bios; | |
648 | const void __iomem *p; | |
649 | ||
650 | bios = ioremap(0xF0000, 0x10000); /* Can't fail */ | |
651 | p = bios_signature(bios); | |
652 | if (p) { | |
653 | /* just use the first address */ | |
654 | apanel_addr = readb(p + 8 + 3) >> 1; | |
655 | } | |
656 | iounmap(bios); | |
657 | } | |
658 | #else | |
659 | static void __init input_apanel_init(void) {} | |
660 | #endif | |
661 | ||
fa5bfab7 HG |
662 | #if defined CONFIG_SENSORS_FSCHMD || defined CONFIG_SENSORS_FSCHMD_MODULE |
663 | struct dmi_onboard_device_info { | |
664 | const char *name; | |
665 | u8 type; | |
666 | unsigned short i2c_addr; | |
667 | const char *i2c_type; | |
668 | }; | |
669 | ||
670 | static struct dmi_onboard_device_info __devinitdata dmi_devices[] = { | |
671 | { "Syleus", DMI_DEV_TYPE_OTHER, 0x73, "fscsyl" }, | |
672 | { "Hermes", DMI_DEV_TYPE_OTHER, 0x73, "fscher" }, | |
673 | { "Hades", DMI_DEV_TYPE_OTHER, 0x73, "fschds" }, | |
674 | }; | |
675 | ||
676 | static void __devinit dmi_check_onboard_device(u8 type, const char *name, | |
677 | struct i2c_adapter *adap) | |
678 | { | |
679 | int i; | |
680 | struct i2c_board_info info; | |
681 | ||
682 | for (i = 0; i < ARRAY_SIZE(dmi_devices); i++) { | |
683 | /* & ~0x80, ignore enabled/disabled bit */ | |
684 | if ((type & ~0x80) != dmi_devices[i].type) | |
685 | continue; | |
faabd47f | 686 | if (strcasecmp(name, dmi_devices[i].name)) |
fa5bfab7 HG |
687 | continue; |
688 | ||
689 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
690 | info.addr = dmi_devices[i].i2c_addr; | |
691 | strlcpy(info.type, dmi_devices[i].i2c_type, I2C_NAME_SIZE); | |
692 | i2c_new_device(adap, &info); | |
693 | break; | |
694 | } | |
695 | } | |
696 | ||
697 | /* We use our own function to check for onboard devices instead of | |
698 | dmi_find_device() as some buggy BIOS's have the devices we are interested | |
699 | in marked as disabled */ | |
700 | static void __devinit dmi_check_onboard_devices(const struct dmi_header *dm, | |
701 | void *adap) | |
702 | { | |
703 | int i, count; | |
704 | ||
705 | if (dm->type != 10) | |
706 | return; | |
707 | ||
708 | count = (dm->length - sizeof(struct dmi_header)) / 2; | |
709 | for (i = 0; i < count; i++) { | |
710 | const u8 *d = (char *)(dm + 1) + (i * 2); | |
711 | const char *name = ((char *) dm) + dm->length; | |
712 | u8 type = d[0]; | |
713 | u8 s = d[1]; | |
714 | ||
715 | if (!s) | |
716 | continue; | |
717 | s--; | |
718 | while (s > 0 && name[0]) { | |
719 | name += strlen(name) + 1; | |
720 | s--; | |
721 | } | |
722 | if (name[0] == 0) /* Bogus string reference */ | |
723 | continue; | |
724 | ||
725 | dmi_check_onboard_device(type, name, adap); | |
726 | } | |
727 | } | |
728 | #endif | |
729 | ||
3fb21c64 IM |
730 | static int __devinit i801_probe(struct pci_dev *dev, |
731 | const struct pci_device_id *id) | |
1da177e4 | 732 | { |
02dd7ae2 | 733 | unsigned char temp; |
adff687d | 734 | int err, i; |
0cd96eb0 DW |
735 | struct i801_priv *priv; |
736 | ||
737 | priv = kzalloc(sizeof(*priv), GFP_KERNEL); | |
738 | if (!priv) | |
739 | return -ENOMEM; | |
740 | ||
741 | i2c_set_adapdata(&priv->adapter, priv); | |
742 | priv->adapter.owner = THIS_MODULE; | |
743 | priv->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD; | |
744 | priv->adapter.algo = &smbus_algorithm; | |
1da177e4 | 745 | |
0cd96eb0 | 746 | priv->pci_dev = dev; |
250d1bd3 | 747 | switch (dev->device) { |
e0e8398c | 748 | default: |
0cd96eb0 | 749 | priv->features |= FEATURE_I2C_BLOCK_READ; |
6342064c JD |
750 | /* fall through */ |
751 | case PCI_DEVICE_ID_INTEL_82801DB_3: | |
0cd96eb0 DW |
752 | priv->features |= FEATURE_SMBUS_PEC; |
753 | priv->features |= FEATURE_BLOCK_BUFFER; | |
e0e8398c JD |
754 | /* fall through */ |
755 | case PCI_DEVICE_ID_INTEL_82801CA_3: | |
756 | case PCI_DEVICE_ID_INTEL_82801BA_2: | |
757 | case PCI_DEVICE_ID_INTEL_82801AB_3: | |
758 | case PCI_DEVICE_ID_INTEL_82801AA_3: | |
250d1bd3 | 759 | break; |
250d1bd3 | 760 | } |
02dd7ae2 | 761 | |
adff687d JD |
762 | /* Disable features on user request */ |
763 | for (i = 0; i < ARRAY_SIZE(i801_feature_names); i++) { | |
0cd96eb0 | 764 | if (priv->features & disable_features & (1 << i)) |
adff687d JD |
765 | dev_notice(&dev->dev, "%s disabled by user\n", |
766 | i801_feature_names[i]); | |
767 | } | |
0cd96eb0 | 768 | priv->features &= ~disable_features; |
adff687d | 769 | |
02dd7ae2 JD |
770 | err = pci_enable_device(dev); |
771 | if (err) { | |
772 | dev_err(&dev->dev, "Failed to enable SMBus PCI device (%d)\n", | |
773 | err); | |
774 | goto exit; | |
775 | } | |
776 | ||
777 | /* Determine the address of the SMBus area */ | |
0cd96eb0 DW |
778 | priv->smba = pci_resource_start(dev, SMBBAR); |
779 | if (!priv->smba) { | |
02dd7ae2 JD |
780 | dev_err(&dev->dev, "SMBus base address uninitialized, " |
781 | "upgrade BIOS\n"); | |
782 | err = -ENODEV; | |
d6fcb3b9 | 783 | goto exit; |
02dd7ae2 JD |
784 | } |
785 | ||
54fb4a05 | 786 | err = acpi_check_resource_conflict(&dev->resource[SMBBAR]); |
18669eab JD |
787 | if (err) { |
788 | err = -ENODEV; | |
54fb4a05 | 789 | goto exit; |
18669eab | 790 | } |
54fb4a05 | 791 | |
02dd7ae2 JD |
792 | err = pci_request_region(dev, SMBBAR, i801_driver.name); |
793 | if (err) { | |
794 | dev_err(&dev->dev, "Failed to request SMBus region " | |
0cd96eb0 | 795 | "0x%lx-0x%Lx\n", priv->smba, |
598736c5 | 796 | (unsigned long long)pci_resource_end(dev, SMBBAR)); |
d6fcb3b9 | 797 | goto exit; |
02dd7ae2 JD |
798 | } |
799 | ||
0cd96eb0 DW |
800 | pci_read_config_byte(priv->pci_dev, SMBHSTCFG, &temp); |
801 | priv->original_hstcfg = temp; | |
02dd7ae2 JD |
802 | temp &= ~SMBHSTCFG_I2C_EN; /* SMBus timing */ |
803 | if (!(temp & SMBHSTCFG_HST_EN)) { | |
804 | dev_info(&dev->dev, "Enabling SMBus device\n"); | |
805 | temp |= SMBHSTCFG_HST_EN; | |
806 | } | |
0cd96eb0 | 807 | pci_write_config_byte(priv->pci_dev, SMBHSTCFG, temp); |
02dd7ae2 JD |
808 | |
809 | if (temp & SMBHSTCFG_SMB_SMI_EN) | |
810 | dev_dbg(&dev->dev, "SMBus using interrupt SMI#\n"); | |
811 | else | |
812 | dev_dbg(&dev->dev, "SMBus using PCI Interrupt\n"); | |
1da177e4 | 813 | |
a0921b6c | 814 | /* Clear special mode bits */ |
0cd96eb0 DW |
815 | if (priv->features & (FEATURE_SMBUS_PEC | FEATURE_BLOCK_BUFFER)) |
816 | outb_p(inb_p(SMBAUXCTL(priv)) & | |
817 | ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B), SMBAUXCTL(priv)); | |
a0921b6c | 818 | |
405ae7d3 | 819 | /* set up the sysfs linkage to our parent device */ |
0cd96eb0 | 820 | priv->adapter.dev.parent = &dev->dev; |
1da177e4 | 821 | |
7e2193a8 | 822 | /* Retry up to 3 times on lost arbitration */ |
0cd96eb0 | 823 | priv->adapter.retries = 3; |
7e2193a8 | 824 | |
0cd96eb0 DW |
825 | snprintf(priv->adapter.name, sizeof(priv->adapter.name), |
826 | "SMBus I801 adapter at %04lx", priv->smba); | |
827 | err = i2c_add_adapter(&priv->adapter); | |
02dd7ae2 JD |
828 | if (err) { |
829 | dev_err(&dev->dev, "Failed to add SMBus adapter\n"); | |
d6fcb3b9 | 830 | goto exit_release; |
02dd7ae2 | 831 | } |
1561bfe5 JD |
832 | |
833 | /* Register optional slaves */ | |
834 | #if defined CONFIG_INPUT_APANEL || defined CONFIG_INPUT_APANEL_MODULE | |
835 | if (apanel_addr) { | |
836 | struct i2c_board_info info; | |
837 | ||
838 | memset(&info, 0, sizeof(struct i2c_board_info)); | |
839 | info.addr = apanel_addr; | |
840 | strlcpy(info.type, "fujitsu_apanel", I2C_NAME_SIZE); | |
0cd96eb0 | 841 | i2c_new_device(&priv->adapter, &info); |
1561bfe5 JD |
842 | } |
843 | #endif | |
fa5bfab7 | 844 | #if defined CONFIG_SENSORS_FSCHMD || defined CONFIG_SENSORS_FSCHMD_MODULE |
faabd47f | 845 | if (dmi_name_in_vendors("FUJITSU")) |
0cd96eb0 | 846 | dmi_walk(dmi_check_onboard_devices, &priv->adapter); |
fa5bfab7 | 847 | #endif |
1561bfe5 | 848 | |
0cd96eb0 | 849 | pci_set_drvdata(dev, priv); |
d6fcb3b9 | 850 | return 0; |
02dd7ae2 | 851 | |
d6fcb3b9 DR |
852 | exit_release: |
853 | pci_release_region(dev, SMBBAR); | |
02dd7ae2 | 854 | exit: |
0cd96eb0 | 855 | kfree(priv); |
02dd7ae2 | 856 | return err; |
1da177e4 LT |
857 | } |
858 | ||
859 | static void __devexit i801_remove(struct pci_dev *dev) | |
860 | { | |
0cd96eb0 DW |
861 | struct i801_priv *priv = pci_get_drvdata(dev); |
862 | ||
863 | i2c_del_adapter(&priv->adapter); | |
864 | pci_write_config_byte(dev, SMBHSTCFG, priv->original_hstcfg); | |
6dcc19df | 865 | pci_release_region(dev, SMBBAR); |
0cd96eb0 DW |
866 | pci_set_drvdata(dev, NULL); |
867 | kfree(priv); | |
d6fcb3b9 DR |
868 | /* |
869 | * do not call pci_disable_device(dev) since it can cause hard hangs on | |
870 | * some systems during power-off (eg. Fujitsu-Siemens Lifebook E8010) | |
871 | */ | |
1da177e4 LT |
872 | } |
873 | ||
a5aaea37 JD |
874 | #ifdef CONFIG_PM |
875 | static int i801_suspend(struct pci_dev *dev, pm_message_t mesg) | |
876 | { | |
0cd96eb0 DW |
877 | struct i801_priv *priv = pci_get_drvdata(dev); |
878 | ||
a5aaea37 | 879 | pci_save_state(dev); |
0cd96eb0 | 880 | pci_write_config_byte(dev, SMBHSTCFG, priv->original_hstcfg); |
a5aaea37 JD |
881 | pci_set_power_state(dev, pci_choose_state(dev, mesg)); |
882 | return 0; | |
883 | } | |
884 | ||
885 | static int i801_resume(struct pci_dev *dev) | |
886 | { | |
887 | pci_set_power_state(dev, PCI_D0); | |
888 | pci_restore_state(dev); | |
889 | return pci_enable_device(dev); | |
890 | } | |
891 | #else | |
892 | #define i801_suspend NULL | |
893 | #define i801_resume NULL | |
894 | #endif | |
895 | ||
1da177e4 LT |
896 | static struct pci_driver i801_driver = { |
897 | .name = "i801_smbus", | |
898 | .id_table = i801_ids, | |
899 | .probe = i801_probe, | |
900 | .remove = __devexit_p(i801_remove), | |
a5aaea37 JD |
901 | .suspend = i801_suspend, |
902 | .resume = i801_resume, | |
1da177e4 LT |
903 | }; |
904 | ||
905 | static int __init i2c_i801_init(void) | |
906 | { | |
1561bfe5 | 907 | input_apanel_init(); |
1da177e4 LT |
908 | return pci_register_driver(&i801_driver); |
909 | } | |
910 | ||
911 | static void __exit i2c_i801_exit(void) | |
912 | { | |
913 | pci_unregister_driver(&i801_driver); | |
914 | } | |
915 | ||
6342064c JD |
916 | MODULE_AUTHOR("Mark D. Studebaker <mdsxyz123@yahoo.com>, " |
917 | "Jean Delvare <khali@linux-fr.org>"); | |
1da177e4 LT |
918 | MODULE_DESCRIPTION("I801 SMBus driver"); |
919 | MODULE_LICENSE("GPL"); | |
920 | ||
921 | module_init(i2c_i801_init); | |
922 | module_exit(i2c_i801_exit); |