Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
3fea5df4 LC |
2 | * Copyright (c) 2000 Frodo Looijaard <frodol@dds.nl>, |
3 | * Philip Edelbrock <phil@netroedge.com>, | |
4 | * Mark D. Studebaker <mdsxyz123@yahoo.com>, | |
5 | * Dan Eaton <dan.eaton@rocketlogix.com> and | |
6 | * Stephen Rousset <stephen.rousset@rocketlogix.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
1da177e4 LT |
21 | */ |
22 | ||
23 | /* | |
24 | This is the driver for the SMB Host controller on | |
25 | Acer Labs Inc. (ALI) M1535 South Bridge. | |
26 | ||
27 | The M1535 is a South bridge for portable systems. | |
28 | It is very similar to the M15x3 South bridges also produced | |
29 | by Acer Labs Inc. Some of the registers within the part | |
30 | have moved and some have been redefined slightly. Additionally, | |
31 | the sequencing of the SMBus transactions has been modified | |
32 | to be more consistent with the sequencing recommended by | |
33 | the manufacturer and observed through testing. These | |
34 | changes are reflected in this driver and can be identified | |
35 | by comparing this driver to the i2c-ali15x3 driver. | |
36 | For an overview of these chips see http://www.acerlabs.com | |
37 | ||
38 | The SMB controller is part of the 7101 device, which is an | |
39 | ACPI-compliant Power Management Unit (PMU). | |
40 | ||
41 | The whole 7101 device has to be enabled for the SMB to work. | |
42 | You can't just enable the SMB alone. | |
43 | The SMB and the ACPI have separate I/O spaces. | |
44 | We make sure that the SMB is enabled. We leave the ACPI alone. | |
45 | ||
46 | This driver controls the SMB Host only. | |
47 | ||
48 | This driver does not use interrupts. | |
49 | */ | |
50 | ||
51 | ||
52 | /* Note: we assume there can only be one ALI1535, with one SMBus interface */ | |
53 | ||
1da177e4 LT |
54 | #include <linux/module.h> |
55 | #include <linux/pci.h> | |
56 | #include <linux/kernel.h> | |
57 | #include <linux/stddef.h> | |
1da177e4 LT |
58 | #include <linux/delay.h> |
59 | #include <linux/ioport.h> | |
60 | #include <linux/i2c.h> | |
54fb4a05 | 61 | #include <linux/acpi.h> |
21782180 | 62 | #include <linux/io.h> |
1da177e4 LT |
63 | |
64 | ||
65 | /* ALI1535 SMBus address offsets */ | |
66 | #define SMBHSTSTS (0 + ali1535_smba) | |
67 | #define SMBHSTTYP (1 + ali1535_smba) | |
68 | #define SMBHSTPORT (2 + ali1535_smba) | |
69 | #define SMBHSTCMD (7 + ali1535_smba) | |
70 | #define SMBHSTADD (3 + ali1535_smba) | |
71 | #define SMBHSTDAT0 (4 + ali1535_smba) | |
72 | #define SMBHSTDAT1 (5 + ali1535_smba) | |
73 | #define SMBBLKDAT (6 + ali1535_smba) | |
74 | ||
75 | /* PCI Address Constants */ | |
76 | #define SMBCOM 0x004 | |
77 | #define SMBREV 0x008 | |
78 | #define SMBCFG 0x0D1 | |
79 | #define SMBBA 0x0E2 | |
80 | #define SMBHSTCFG 0x0F0 | |
81 | #define SMBCLK 0x0F2 | |
82 | ||
83 | /* Other settings */ | |
84 | #define MAX_TIMEOUT 500 /* times 1/100 sec */ | |
85 | #define ALI1535_SMB_IOSIZE 32 | |
86 | ||
87 | #define ALI1535_SMB_DEFAULTBASE 0x8040 | |
88 | ||
89 | /* ALI1535 address lock bits */ | |
90 | #define ALI1535_LOCK 0x06 /* dwe */ | |
91 | ||
92 | /* ALI1535 command constants */ | |
93 | #define ALI1535_QUICK 0x00 | |
94 | #define ALI1535_BYTE 0x10 | |
95 | #define ALI1535_BYTE_DATA 0x20 | |
96 | #define ALI1535_WORD_DATA 0x30 | |
97 | #define ALI1535_BLOCK_DATA 0x40 | |
98 | #define ALI1535_I2C_READ 0x60 | |
99 | ||
100 | #define ALI1535_DEV10B_EN 0x80 /* Enable 10-bit addressing in */ | |
101 | /* I2C read */ | |
102 | #define ALI1535_T_OUT 0x08 /* Time-out Command (write) */ | |
103 | #define ALI1535_A_HIGH_BIT9 0x08 /* Bit 9 of 10-bit address in */ | |
104 | /* Alert-Response-Address */ | |
105 | /* (read) */ | |
106 | #define ALI1535_KILL 0x04 /* Kill Command (write) */ | |
107 | #define ALI1535_A_HIGH_BIT8 0x04 /* Bit 8 of 10-bit address in */ | |
108 | /* Alert-Response-Address */ | |
109 | /* (read) */ | |
110 | ||
111 | #define ALI1535_D_HI_MASK 0x03 /* Mask for isolating bits 9-8 */ | |
112 | /* of 10-bit address in I2C */ | |
113 | /* Read Command */ | |
114 | ||
115 | /* ALI1535 status register bits */ | |
116 | #define ALI1535_STS_IDLE 0x04 | |
117 | #define ALI1535_STS_BUSY 0x08 /* host busy */ | |
118 | #define ALI1535_STS_DONE 0x10 /* transaction complete */ | |
119 | #define ALI1535_STS_DEV 0x20 /* device error */ | |
120 | #define ALI1535_STS_BUSERR 0x40 /* bus error */ | |
121 | #define ALI1535_STS_FAIL 0x80 /* failed bus transaction */ | |
122 | #define ALI1535_STS_ERR 0xE0 /* all the bad error bits */ | |
123 | ||
124 | #define ALI1535_BLOCK_CLR 0x04 /* reset block data index */ | |
125 | ||
126 | /* ALI1535 device address register bits */ | |
127 | #define ALI1535_RD_ADDR 0x01 /* Read/Write Bit in Device */ | |
128 | /* Address field */ | |
129 | /* -> Write = 0 */ | |
130 | /* -> Read = 1 */ | |
131 | #define ALI1535_SMBIO_EN 0x04 /* SMB I/O Space enable */ | |
132 | ||
d6072f84 | 133 | static struct pci_driver ali1535_driver; |
65a2d74b | 134 | static unsigned long ali1535_smba; |
135 | static unsigned short ali1535_offset; | |
1da177e4 LT |
136 | |
137 | /* Detect whether a ALI1535 can be found, and initialize it, where necessary. | |
138 | Note the differences between kernels with the old PCI BIOS interface and | |
139 | newer kernels with the real PCI interface. In compat.h some things are | |
140 | defined to make the transition easier. */ | |
0b255e92 | 141 | static int ali1535_setup(struct pci_dev *dev) |
1da177e4 | 142 | { |
7c1f59c9 | 143 | int retval; |
1da177e4 LT |
144 | unsigned char temp; |
145 | ||
146 | /* Check the following things: | |
147 | - SMB I/O address is initialized | |
148 | - Device is enabled | |
149 | - We can use the addresses | |
150 | */ | |
151 | ||
65a2d74b | 152 | retval = pci_enable_device(dev); |
153 | if (retval) { | |
154 | dev_err(&dev->dev, "ALI1535_smb can't enable device\n"); | |
155 | goto exit; | |
156 | } | |
157 | ||
1da177e4 | 158 | /* Determine the address of the SMBus area */ |
65a2d74b | 159 | pci_read_config_word(dev, SMBBA, &ali1535_offset); |
160 | dev_dbg(&dev->dev, "ALI1535_smb is at offset 0x%04x\n", ali1535_offset); | |
161 | ali1535_offset &= (0xffff & ~(ALI1535_SMB_IOSIZE - 1)); | |
162 | if (ali1535_offset == 0) { | |
1da177e4 LT |
163 | dev_warn(&dev->dev, |
164 | "ALI1535_smb region uninitialized - upgrade BIOS?\n"); | |
7c1f59c9 | 165 | retval = -ENODEV; |
1da177e4 LT |
166 | goto exit; |
167 | } | |
168 | ||
65a2d74b | 169 | if (pci_resource_flags(dev, 0) & IORESOURCE_IO) |
170 | ali1535_smba = pci_resource_start(dev, 0) + ali1535_offset; | |
171 | else | |
172 | ali1535_smba = ali1535_offset; | |
173 | ||
54fb4a05 JD |
174 | retval = acpi_check_region(ali1535_smba, ALI1535_SMB_IOSIZE, |
175 | ali1535_driver.name); | |
176 | if (retval) | |
177 | goto exit; | |
178 | ||
d6072f84 JD |
179 | if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE, |
180 | ali1535_driver.name)) { | |
65a2d74b | 181 | dev_err(&dev->dev, "ALI1535_smb region 0x%lx already in use!\n", |
1da177e4 | 182 | ali1535_smba); |
7c1f59c9 | 183 | retval = -EBUSY; |
1da177e4 LT |
184 | goto exit; |
185 | } | |
186 | ||
187 | /* check if whole device is enabled */ | |
188 | pci_read_config_byte(dev, SMBCFG, &temp); | |
189 | if ((temp & ALI1535_SMBIO_EN) == 0) { | |
190 | dev_err(&dev->dev, "SMB device not enabled - upgrade BIOS?\n"); | |
7c1f59c9 | 191 | retval = -ENODEV; |
1da177e4 LT |
192 | goto exit_free; |
193 | } | |
194 | ||
195 | /* Is SMB Host controller enabled? */ | |
196 | pci_read_config_byte(dev, SMBHSTCFG, &temp); | |
197 | if ((temp & 1) == 0) { | |
198 | dev_err(&dev->dev, "SMBus controller not enabled - upgrade BIOS?\n"); | |
7c1f59c9 | 199 | retval = -ENODEV; |
1da177e4 LT |
200 | goto exit_free; |
201 | } | |
202 | ||
203 | /* set SMB clock to 74KHz as recommended in data sheet */ | |
204 | pci_write_config_byte(dev, SMBCLK, 0x20); | |
205 | ||
206 | /* | |
207 | The interrupt routing for SMB is set up in register 0x77 in the | |
208 | 1533 ISA Bridge device, NOT in the 7101 device. | |
209 | Don't bother with finding the 1533 device and reading the register. | |
210 | if ((....... & 0x0F) == 1) | |
211 | dev_dbg(&dev->dev, "ALI1535 using Interrupt 9 for SMBus.\n"); | |
212 | */ | |
213 | pci_read_config_byte(dev, SMBREV, &temp); | |
214 | dev_dbg(&dev->dev, "SMBREV = 0x%X\n", temp); | |
65a2d74b | 215 | dev_dbg(&dev->dev, "ALI1535_smba = 0x%lx\n", ali1535_smba); |
1da177e4 | 216 | |
7c1f59c9 | 217 | return 0; |
1da177e4 LT |
218 | |
219 | exit_free: | |
220 | release_region(ali1535_smba, ALI1535_SMB_IOSIZE); | |
7c1f59c9 | 221 | exit: |
1da177e4 LT |
222 | return retval; |
223 | } | |
224 | ||
225 | static int ali1535_transaction(struct i2c_adapter *adap) | |
226 | { | |
227 | int temp; | |
228 | int result = 0; | |
229 | int timeout = 0; | |
230 | ||
231 | dev_dbg(&adap->dev, "Transaction (pre): STS=%02x, TYP=%02x, " | |
232 | "CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n", | |
233 | inb_p(SMBHSTSTS), inb_p(SMBHSTTYP), inb_p(SMBHSTCMD), | |
234 | inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); | |
235 | ||
236 | /* get status */ | |
237 | temp = inb_p(SMBHSTSTS); | |
238 | ||
239 | /* Make sure the SMBus host is ready to start transmitting */ | |
240 | /* Check the busy bit first */ | |
241 | if (temp & ALI1535_STS_BUSY) { | |
242 | /* If the host controller is still busy, it may have timed out | |
243 | * in the previous transaction, resulting in a "SMBus Timeout" | |
244 | * printk. I've tried the following to reset a stuck busy bit. | |
245 | * 1. Reset the controller with an KILL command. (this | |
246 | * doesn't seem to clear the controller if an external | |
247 | * device is hung) | |
248 | * 2. Reset the controller and the other SMBus devices with a | |
249 | * T_OUT command. (this clears the host busy bit if an | |
250 | * external device is hung, but it comes back upon a new | |
251 | * access to a device) | |
252 | * 3. Disable and reenable the controller in SMBHSTCFG. Worst | |
253 | * case, nothing seems to work except power reset. | |
254 | */ | |
255 | ||
256 | /* Try resetting entire SMB bus, including other devices - This | |
257 | * may not work either - it clears the BUSY bit but then the | |
258 | * BUSY bit may come back on when you try and use the chip | |
259 | * again. If that's the case you are stuck. | |
260 | */ | |
261 | dev_info(&adap->dev, | |
262 | "Resetting entire SMB Bus to clear busy condition (%02x)\n", | |
263 | temp); | |
264 | outb_p(ALI1535_T_OUT, SMBHSTTYP); | |
265 | temp = inb_p(SMBHSTSTS); | |
266 | } | |
267 | ||
268 | /* now check the error bits and the busy bit */ | |
269 | if (temp & (ALI1535_STS_ERR | ALI1535_STS_BUSY)) { | |
270 | /* do a clear-on-write */ | |
271 | outb_p(0xFF, SMBHSTSTS); | |
3fea5df4 LC |
272 | temp = inb_p(SMBHSTSTS); |
273 | if (temp & (ALI1535_STS_ERR | ALI1535_STS_BUSY)) { | |
1da177e4 LT |
274 | /* This is probably going to be correctable only by a |
275 | * power reset as one of the bits now appears to be | |
276 | * stuck */ | |
277 | /* This may be a bus or device with electrical problems. */ | |
278 | dev_err(&adap->dev, | |
279 | "SMBus reset failed! (0x%02x) - controller or " | |
280 | "device on bus is probably hung\n", temp); | |
97140342 | 281 | return -EBUSY; |
1da177e4 LT |
282 | } |
283 | } else { | |
284 | /* check and clear done bit */ | |
3fea5df4 | 285 | if (temp & ALI1535_STS_DONE) |
1da177e4 | 286 | outb_p(temp, SMBHSTSTS); |
1da177e4 LT |
287 | } |
288 | ||
289 | /* start the transaction by writing anything to the start register */ | |
290 | outb_p(0xFF, SMBHSTPORT); | |
291 | ||
292 | /* We will always wait for a fraction of a second! */ | |
293 | timeout = 0; | |
294 | do { | |
3fea5df4 | 295 | usleep_range(1000, 2000); |
1da177e4 LT |
296 | temp = inb_p(SMBHSTSTS); |
297 | } while (((temp & ALI1535_STS_BUSY) && !(temp & ALI1535_STS_IDLE)) | |
298 | && (timeout++ < MAX_TIMEOUT)); | |
299 | ||
300 | /* If the SMBus is still busy, we give up */ | |
4ccc28f7 | 301 | if (timeout > MAX_TIMEOUT) { |
97140342 | 302 | result = -ETIMEDOUT; |
1da177e4 LT |
303 | dev_err(&adap->dev, "SMBus Timeout!\n"); |
304 | } | |
305 | ||
306 | if (temp & ALI1535_STS_FAIL) { | |
97140342 | 307 | result = -EIO; |
1da177e4 LT |
308 | dev_dbg(&adap->dev, "Error: Failed bus transaction\n"); |
309 | } | |
310 | ||
311 | /* Unfortunately the ALI SMB controller maps "no response" and "bus | |
25985edc | 312 | * collision" into a single bit. No response is the usual case so don't |
1da177e4 LT |
313 | * do a printk. This means that bus collisions go unreported. |
314 | */ | |
315 | if (temp & ALI1535_STS_BUSERR) { | |
97140342 | 316 | result = -ENXIO; |
1da177e4 LT |
317 | dev_dbg(&adap->dev, |
318 | "Error: no response or bus collision ADD=%02x\n", | |
319 | inb_p(SMBHSTADD)); | |
320 | } | |
321 | ||
322 | /* haven't ever seen this */ | |
323 | if (temp & ALI1535_STS_DEV) { | |
97140342 | 324 | result = -EIO; |
1da177e4 LT |
325 | dev_err(&adap->dev, "Error: device error\n"); |
326 | } | |
327 | ||
328 | /* check to see if the "command complete" indication is set */ | |
329 | if (!(temp & ALI1535_STS_DONE)) { | |
97140342 | 330 | result = -ETIMEDOUT; |
1da177e4 LT |
331 | dev_err(&adap->dev, "Error: command never completed\n"); |
332 | } | |
333 | ||
334 | dev_dbg(&adap->dev, "Transaction (post): STS=%02x, TYP=%02x, " | |
335 | "CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n", | |
336 | inb_p(SMBHSTSTS), inb_p(SMBHSTTYP), inb_p(SMBHSTCMD), | |
337 | inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); | |
338 | ||
339 | /* take consequent actions for error conditions */ | |
340 | if (!(temp & ALI1535_STS_DONE)) { | |
341 | /* issue "kill" to reset host controller */ | |
3fea5df4 LC |
342 | outb_p(ALI1535_KILL, SMBHSTTYP); |
343 | outb_p(0xFF, SMBHSTSTS); | |
1da177e4 LT |
344 | } else if (temp & ALI1535_STS_ERR) { |
345 | /* issue "timeout" to reset all devices on bus */ | |
3fea5df4 LC |
346 | outb_p(ALI1535_T_OUT, SMBHSTTYP); |
347 | outb_p(0xFF, SMBHSTSTS); | |
1da177e4 LT |
348 | } |
349 | ||
350 | return result; | |
351 | } | |
352 | ||
97140342 | 353 | /* Return negative errno on error. */ |
1da177e4 LT |
354 | static s32 ali1535_access(struct i2c_adapter *adap, u16 addr, |
355 | unsigned short flags, char read_write, u8 command, | |
356 | int size, union i2c_smbus_data *data) | |
357 | { | |
358 | int i, len; | |
359 | int temp; | |
360 | int timeout; | |
361 | s32 result = 0; | |
362 | ||
1da177e4 LT |
363 | /* make sure SMBus is idle */ |
364 | temp = inb_p(SMBHSTSTS); | |
365 | for (timeout = 0; | |
366 | (timeout < MAX_TIMEOUT) && !(temp & ALI1535_STS_IDLE); | |
367 | timeout++) { | |
3fea5df4 | 368 | usleep_range(1000, 2000); |
1da177e4 LT |
369 | temp = inb_p(SMBHSTSTS); |
370 | } | |
371 | if (timeout >= MAX_TIMEOUT) | |
372 | dev_warn(&adap->dev, "Idle wait Timeout! STS=0x%02x\n", temp); | |
373 | ||
374 | /* clear status register (clear-on-write) */ | |
375 | outb_p(0xFF, SMBHSTSTS); | |
376 | ||
377 | switch (size) { | |
1da177e4 LT |
378 | case I2C_SMBUS_QUICK: |
379 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
380 | SMBHSTADD); | |
381 | size = ALI1535_QUICK; | |
382 | outb_p(size, SMBHSTTYP); /* output command */ | |
383 | break; | |
384 | case I2C_SMBUS_BYTE: | |
385 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
386 | SMBHSTADD); | |
387 | size = ALI1535_BYTE; | |
388 | outb_p(size, SMBHSTTYP); /* output command */ | |
389 | if (read_write == I2C_SMBUS_WRITE) | |
390 | outb_p(command, SMBHSTCMD); | |
391 | break; | |
392 | case I2C_SMBUS_BYTE_DATA: | |
393 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
394 | SMBHSTADD); | |
395 | size = ALI1535_BYTE_DATA; | |
396 | outb_p(size, SMBHSTTYP); /* output command */ | |
397 | outb_p(command, SMBHSTCMD); | |
398 | if (read_write == I2C_SMBUS_WRITE) | |
399 | outb_p(data->byte, SMBHSTDAT0); | |
400 | break; | |
401 | case I2C_SMBUS_WORD_DATA: | |
402 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
403 | SMBHSTADD); | |
404 | size = ALI1535_WORD_DATA; | |
405 | outb_p(size, SMBHSTTYP); /* output command */ | |
406 | outb_p(command, SMBHSTCMD); | |
407 | if (read_write == I2C_SMBUS_WRITE) { | |
408 | outb_p(data->word & 0xff, SMBHSTDAT0); | |
409 | outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1); | |
410 | } | |
411 | break; | |
412 | case I2C_SMBUS_BLOCK_DATA: | |
413 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
414 | SMBHSTADD); | |
415 | size = ALI1535_BLOCK_DATA; | |
416 | outb_p(size, SMBHSTTYP); /* output command */ | |
417 | outb_p(command, SMBHSTCMD); | |
418 | if (read_write == I2C_SMBUS_WRITE) { | |
419 | len = data->block[0]; | |
420 | if (len < 0) { | |
421 | len = 0; | |
422 | data->block[0] = len; | |
423 | } | |
424 | if (len > 32) { | |
425 | len = 32; | |
426 | data->block[0] = len; | |
427 | } | |
428 | outb_p(len, SMBHSTDAT0); | |
429 | /* Reset SMBBLKDAT */ | |
430 | outb_p(inb_p(SMBHSTTYP) | ALI1535_BLOCK_CLR, SMBHSTTYP); | |
431 | for (i = 1; i <= len; i++) | |
432 | outb_p(data->block[i], SMBBLKDAT); | |
433 | } | |
434 | break; | |
ac7fc4fb JD |
435 | default: |
436 | dev_warn(&adap->dev, "Unsupported transaction %d\n", size); | |
437 | result = -EOPNOTSUPP; | |
438 | goto EXIT; | |
1da177e4 LT |
439 | } |
440 | ||
97140342 DB |
441 | result = ali1535_transaction(adap); |
442 | if (result) | |
1da177e4 | 443 | goto EXIT; |
1da177e4 LT |
444 | |
445 | if ((read_write == I2C_SMBUS_WRITE) || (size == ALI1535_QUICK)) { | |
446 | result = 0; | |
447 | goto EXIT; | |
448 | } | |
449 | ||
450 | switch (size) { | |
451 | case ALI1535_BYTE: /* Result put in SMBHSTDAT0 */ | |
452 | data->byte = inb_p(SMBHSTDAT0); | |
453 | break; | |
454 | case ALI1535_BYTE_DATA: | |
455 | data->byte = inb_p(SMBHSTDAT0); | |
456 | break; | |
457 | case ALI1535_WORD_DATA: | |
458 | data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8); | |
459 | break; | |
460 | case ALI1535_BLOCK_DATA: | |
461 | len = inb_p(SMBHSTDAT0); | |
462 | if (len > 32) | |
463 | len = 32; | |
464 | data->block[0] = len; | |
465 | /* Reset SMBBLKDAT */ | |
466 | outb_p(inb_p(SMBHSTTYP) | ALI1535_BLOCK_CLR, SMBHSTTYP); | |
467 | for (i = 1; i <= data->block[0]; i++) { | |
468 | data->block[i] = inb_p(SMBBLKDAT); | |
469 | dev_dbg(&adap->dev, "Blk: len=%d, i=%d, data=%02x\n", | |
470 | len, i, data->block[i]); | |
471 | } | |
472 | break; | |
473 | } | |
474 | EXIT: | |
1da177e4 LT |
475 | return result; |
476 | } | |
477 | ||
478 | ||
479 | static u32 ali1535_func(struct i2c_adapter *adapter) | |
480 | { | |
481 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | | |
482 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | | |
483 | I2C_FUNC_SMBUS_BLOCK_DATA; | |
484 | } | |
485 | ||
8f9082c5 | 486 | static const struct i2c_algorithm smbus_algorithm = { |
1da177e4 LT |
487 | .smbus_xfer = ali1535_access, |
488 | .functionality = ali1535_func, | |
489 | }; | |
490 | ||
491 | static struct i2c_adapter ali1535_adapter = { | |
492 | .owner = THIS_MODULE, | |
3401b2ff | 493 | .class = I2C_CLASS_HWMON | I2C_CLASS_SPD, |
1da177e4 | 494 | .algo = &smbus_algorithm, |
1da177e4 LT |
495 | }; |
496 | ||
392debf1 | 497 | static const struct pci_device_id ali1535_ids[] = { |
1da177e4 LT |
498 | { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) }, |
499 | { }, | |
500 | }; | |
501 | ||
3fea5df4 | 502 | MODULE_DEVICE_TABLE(pci, ali1535_ids); |
1da177e4 | 503 | |
0b255e92 | 504 | static int ali1535_probe(struct pci_dev *dev, const struct pci_device_id *id) |
1da177e4 LT |
505 | { |
506 | if (ali1535_setup(dev)) { | |
507 | dev_warn(&dev->dev, | |
508 | "ALI1535 not detected, module not inserted.\n"); | |
509 | return -ENODEV; | |
510 | } | |
511 | ||
405ae7d3 | 512 | /* set up the sysfs linkage to our parent device */ |
1da177e4 LT |
513 | ali1535_adapter.dev.parent = &dev->dev; |
514 | ||
2096b956 | 515 | snprintf(ali1535_adapter.name, sizeof(ali1535_adapter.name), |
65a2d74b | 516 | "SMBus ALI1535 adapter at %04x", ali1535_offset); |
1da177e4 LT |
517 | return i2c_add_adapter(&ali1535_adapter); |
518 | } | |
519 | ||
0b255e92 | 520 | static void ali1535_remove(struct pci_dev *dev) |
1da177e4 LT |
521 | { |
522 | i2c_del_adapter(&ali1535_adapter); | |
523 | release_region(ali1535_smba, ALI1535_SMB_IOSIZE); | |
524 | } | |
525 | ||
526 | static struct pci_driver ali1535_driver = { | |
527 | .name = "ali1535_smbus", | |
528 | .id_table = ali1535_ids, | |
529 | .probe = ali1535_probe, | |
0b255e92 | 530 | .remove = ali1535_remove, |
1da177e4 LT |
531 | }; |
532 | ||
56f21788 | 533 | module_pci_driver(ali1535_driver); |
1da177e4 LT |
534 | |
535 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
536 | "Philip Edelbrock <phil@netroedge.com>, " | |
537 | "Mark D. Studebaker <mdsxyz123@yahoo.com> " | |
538 | "and Dan Eaton <dan.eaton@rocketlogix.com>"); | |
539 | MODULE_DESCRIPTION("ALI1535 SMBus driver"); | |
540 | MODULE_LICENSE("GPL"); |