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> | |
61 | #include <linux/init.h> | |
54fb4a05 | 62 | #include <linux/acpi.h> |
21782180 | 63 | #include <linux/io.h> |
1da177e4 LT |
64 | |
65 | ||
66 | /* ALI1535 SMBus address offsets */ | |
67 | #define SMBHSTSTS (0 + ali1535_smba) | |
68 | #define SMBHSTTYP (1 + ali1535_smba) | |
69 | #define SMBHSTPORT (2 + ali1535_smba) | |
70 | #define SMBHSTCMD (7 + ali1535_smba) | |
71 | #define SMBHSTADD (3 + ali1535_smba) | |
72 | #define SMBHSTDAT0 (4 + ali1535_smba) | |
73 | #define SMBHSTDAT1 (5 + ali1535_smba) | |
74 | #define SMBBLKDAT (6 + ali1535_smba) | |
75 | ||
76 | /* PCI Address Constants */ | |
77 | #define SMBCOM 0x004 | |
78 | #define SMBREV 0x008 | |
79 | #define SMBCFG 0x0D1 | |
80 | #define SMBBA 0x0E2 | |
81 | #define SMBHSTCFG 0x0F0 | |
82 | #define SMBCLK 0x0F2 | |
83 | ||
84 | /* Other settings */ | |
85 | #define MAX_TIMEOUT 500 /* times 1/100 sec */ | |
86 | #define ALI1535_SMB_IOSIZE 32 | |
87 | ||
88 | #define ALI1535_SMB_DEFAULTBASE 0x8040 | |
89 | ||
90 | /* ALI1535 address lock bits */ | |
91 | #define ALI1535_LOCK 0x06 /* dwe */ | |
92 | ||
93 | /* ALI1535 command constants */ | |
94 | #define ALI1535_QUICK 0x00 | |
95 | #define ALI1535_BYTE 0x10 | |
96 | #define ALI1535_BYTE_DATA 0x20 | |
97 | #define ALI1535_WORD_DATA 0x30 | |
98 | #define ALI1535_BLOCK_DATA 0x40 | |
99 | #define ALI1535_I2C_READ 0x60 | |
100 | ||
101 | #define ALI1535_DEV10B_EN 0x80 /* Enable 10-bit addressing in */ | |
102 | /* I2C read */ | |
103 | #define ALI1535_T_OUT 0x08 /* Time-out Command (write) */ | |
104 | #define ALI1535_A_HIGH_BIT9 0x08 /* Bit 9 of 10-bit address in */ | |
105 | /* Alert-Response-Address */ | |
106 | /* (read) */ | |
107 | #define ALI1535_KILL 0x04 /* Kill Command (write) */ | |
108 | #define ALI1535_A_HIGH_BIT8 0x04 /* Bit 8 of 10-bit address in */ | |
109 | /* Alert-Response-Address */ | |
110 | /* (read) */ | |
111 | ||
112 | #define ALI1535_D_HI_MASK 0x03 /* Mask for isolating bits 9-8 */ | |
113 | /* of 10-bit address in I2C */ | |
114 | /* Read Command */ | |
115 | ||
116 | /* ALI1535 status register bits */ | |
117 | #define ALI1535_STS_IDLE 0x04 | |
118 | #define ALI1535_STS_BUSY 0x08 /* host busy */ | |
119 | #define ALI1535_STS_DONE 0x10 /* transaction complete */ | |
120 | #define ALI1535_STS_DEV 0x20 /* device error */ | |
121 | #define ALI1535_STS_BUSERR 0x40 /* bus error */ | |
122 | #define ALI1535_STS_FAIL 0x80 /* failed bus transaction */ | |
123 | #define ALI1535_STS_ERR 0xE0 /* all the bad error bits */ | |
124 | ||
125 | #define ALI1535_BLOCK_CLR 0x04 /* reset block data index */ | |
126 | ||
127 | /* ALI1535 device address register bits */ | |
128 | #define ALI1535_RD_ADDR 0x01 /* Read/Write Bit in Device */ | |
129 | /* Address field */ | |
130 | /* -> Write = 0 */ | |
131 | /* -> Read = 1 */ | |
132 | #define ALI1535_SMBIO_EN 0x04 /* SMB I/O Space enable */ | |
133 | ||
d6072f84 | 134 | static struct pci_driver ali1535_driver; |
65a2d74b | 135 | static unsigned long ali1535_smba; |
136 | static unsigned short ali1535_offset; | |
1da177e4 LT |
137 | |
138 | /* Detect whether a ALI1535 can be found, and initialize it, where necessary. | |
139 | Note the differences between kernels with the old PCI BIOS interface and | |
140 | newer kernels with the real PCI interface. In compat.h some things are | |
141 | defined to make the transition easier. */ | |
abe38388 | 142 | static int __devinit ali1535_setup(struct pci_dev *dev) |
1da177e4 | 143 | { |
7c1f59c9 | 144 | int retval; |
1da177e4 LT |
145 | unsigned char temp; |
146 | ||
147 | /* Check the following things: | |
148 | - SMB I/O address is initialized | |
149 | - Device is enabled | |
150 | - We can use the addresses | |
151 | */ | |
152 | ||
65a2d74b | 153 | retval = pci_enable_device(dev); |
154 | if (retval) { | |
155 | dev_err(&dev->dev, "ALI1535_smb can't enable device\n"); | |
156 | goto exit; | |
157 | } | |
158 | ||
1da177e4 | 159 | /* Determine the address of the SMBus area */ |
65a2d74b | 160 | pci_read_config_word(dev, SMBBA, &ali1535_offset); |
161 | dev_dbg(&dev->dev, "ALI1535_smb is at offset 0x%04x\n", ali1535_offset); | |
162 | ali1535_offset &= (0xffff & ~(ALI1535_SMB_IOSIZE - 1)); | |
163 | if (ali1535_offset == 0) { | |
1da177e4 LT |
164 | dev_warn(&dev->dev, |
165 | "ALI1535_smb region uninitialized - upgrade BIOS?\n"); | |
7c1f59c9 | 166 | retval = -ENODEV; |
1da177e4 LT |
167 | goto exit; |
168 | } | |
169 | ||
65a2d74b | 170 | if (pci_resource_flags(dev, 0) & IORESOURCE_IO) |
171 | ali1535_smba = pci_resource_start(dev, 0) + ali1535_offset; | |
172 | else | |
173 | ali1535_smba = ali1535_offset; | |
174 | ||
54fb4a05 JD |
175 | retval = acpi_check_region(ali1535_smba, ALI1535_SMB_IOSIZE, |
176 | ali1535_driver.name); | |
177 | if (retval) | |
178 | goto exit; | |
179 | ||
d6072f84 JD |
180 | if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE, |
181 | ali1535_driver.name)) { | |
65a2d74b | 182 | dev_err(&dev->dev, "ALI1535_smb region 0x%lx already in use!\n", |
1da177e4 | 183 | ali1535_smba); |
7c1f59c9 | 184 | retval = -EBUSY; |
1da177e4 LT |
185 | goto exit; |
186 | } | |
187 | ||
188 | /* check if whole device is enabled */ | |
189 | pci_read_config_byte(dev, SMBCFG, &temp); | |
190 | if ((temp & ALI1535_SMBIO_EN) == 0) { | |
191 | dev_err(&dev->dev, "SMB device not enabled - upgrade BIOS?\n"); | |
7c1f59c9 | 192 | retval = -ENODEV; |
1da177e4 LT |
193 | goto exit_free; |
194 | } | |
195 | ||
196 | /* Is SMB Host controller enabled? */ | |
197 | pci_read_config_byte(dev, SMBHSTCFG, &temp); | |
198 | if ((temp & 1) == 0) { | |
199 | dev_err(&dev->dev, "SMBus controller not enabled - upgrade BIOS?\n"); | |
7c1f59c9 | 200 | retval = -ENODEV; |
1da177e4 LT |
201 | goto exit_free; |
202 | } | |
203 | ||
204 | /* set SMB clock to 74KHz as recommended in data sheet */ | |
205 | pci_write_config_byte(dev, SMBCLK, 0x20); | |
206 | ||
207 | /* | |
208 | The interrupt routing for SMB is set up in register 0x77 in the | |
209 | 1533 ISA Bridge device, NOT in the 7101 device. | |
210 | Don't bother with finding the 1533 device and reading the register. | |
211 | if ((....... & 0x0F) == 1) | |
212 | dev_dbg(&dev->dev, "ALI1535 using Interrupt 9 for SMBus.\n"); | |
213 | */ | |
214 | pci_read_config_byte(dev, SMBREV, &temp); | |
215 | dev_dbg(&dev->dev, "SMBREV = 0x%X\n", temp); | |
65a2d74b | 216 | dev_dbg(&dev->dev, "ALI1535_smba = 0x%lx\n", ali1535_smba); |
1da177e4 | 217 | |
7c1f59c9 | 218 | return 0; |
1da177e4 LT |
219 | |
220 | exit_free: | |
221 | release_region(ali1535_smba, ALI1535_SMB_IOSIZE); | |
7c1f59c9 | 222 | exit: |
1da177e4 LT |
223 | return retval; |
224 | } | |
225 | ||
226 | static int ali1535_transaction(struct i2c_adapter *adap) | |
227 | { | |
228 | int temp; | |
229 | int result = 0; | |
230 | int timeout = 0; | |
231 | ||
232 | dev_dbg(&adap->dev, "Transaction (pre): STS=%02x, TYP=%02x, " | |
233 | "CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n", | |
234 | inb_p(SMBHSTSTS), inb_p(SMBHSTTYP), inb_p(SMBHSTCMD), | |
235 | inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); | |
236 | ||
237 | /* get status */ | |
238 | temp = inb_p(SMBHSTSTS); | |
239 | ||
240 | /* Make sure the SMBus host is ready to start transmitting */ | |
241 | /* Check the busy bit first */ | |
242 | if (temp & ALI1535_STS_BUSY) { | |
243 | /* If the host controller is still busy, it may have timed out | |
244 | * in the previous transaction, resulting in a "SMBus Timeout" | |
245 | * printk. I've tried the following to reset a stuck busy bit. | |
246 | * 1. Reset the controller with an KILL command. (this | |
247 | * doesn't seem to clear the controller if an external | |
248 | * device is hung) | |
249 | * 2. Reset the controller and the other SMBus devices with a | |
250 | * T_OUT command. (this clears the host busy bit if an | |
251 | * external device is hung, but it comes back upon a new | |
252 | * access to a device) | |
253 | * 3. Disable and reenable the controller in SMBHSTCFG. Worst | |
254 | * case, nothing seems to work except power reset. | |
255 | */ | |
256 | ||
257 | /* Try resetting entire SMB bus, including other devices - This | |
258 | * may not work either - it clears the BUSY bit but then the | |
259 | * BUSY bit may come back on when you try and use the chip | |
260 | * again. If that's the case you are stuck. | |
261 | */ | |
262 | dev_info(&adap->dev, | |
263 | "Resetting entire SMB Bus to clear busy condition (%02x)\n", | |
264 | temp); | |
265 | outb_p(ALI1535_T_OUT, SMBHSTTYP); | |
266 | temp = inb_p(SMBHSTSTS); | |
267 | } | |
268 | ||
269 | /* now check the error bits and the busy bit */ | |
270 | if (temp & (ALI1535_STS_ERR | ALI1535_STS_BUSY)) { | |
271 | /* do a clear-on-write */ | |
272 | outb_p(0xFF, SMBHSTSTS); | |
3fea5df4 LC |
273 | temp = inb_p(SMBHSTSTS); |
274 | if (temp & (ALI1535_STS_ERR | ALI1535_STS_BUSY)) { | |
1da177e4 LT |
275 | /* This is probably going to be correctable only by a |
276 | * power reset as one of the bits now appears to be | |
277 | * stuck */ | |
278 | /* This may be a bus or device with electrical problems. */ | |
279 | dev_err(&adap->dev, | |
280 | "SMBus reset failed! (0x%02x) - controller or " | |
281 | "device on bus is probably hung\n", temp); | |
97140342 | 282 | return -EBUSY; |
1da177e4 LT |
283 | } |
284 | } else { | |
285 | /* check and clear done bit */ | |
3fea5df4 | 286 | if (temp & ALI1535_STS_DONE) |
1da177e4 | 287 | outb_p(temp, SMBHSTSTS); |
1da177e4 LT |
288 | } |
289 | ||
290 | /* start the transaction by writing anything to the start register */ | |
291 | outb_p(0xFF, SMBHSTPORT); | |
292 | ||
293 | /* We will always wait for a fraction of a second! */ | |
294 | timeout = 0; | |
295 | do { | |
3fea5df4 | 296 | usleep_range(1000, 2000); |
1da177e4 LT |
297 | temp = inb_p(SMBHSTSTS); |
298 | } while (((temp & ALI1535_STS_BUSY) && !(temp & ALI1535_STS_IDLE)) | |
299 | && (timeout++ < MAX_TIMEOUT)); | |
300 | ||
301 | /* If the SMBus is still busy, we give up */ | |
4ccc28f7 | 302 | if (timeout > MAX_TIMEOUT) { |
97140342 | 303 | result = -ETIMEDOUT; |
1da177e4 LT |
304 | dev_err(&adap->dev, "SMBus Timeout!\n"); |
305 | } | |
306 | ||
307 | if (temp & ALI1535_STS_FAIL) { | |
97140342 | 308 | result = -EIO; |
1da177e4 LT |
309 | dev_dbg(&adap->dev, "Error: Failed bus transaction\n"); |
310 | } | |
311 | ||
312 | /* Unfortunately the ALI SMB controller maps "no response" and "bus | |
25985edc | 313 | * collision" into a single bit. No response is the usual case so don't |
1da177e4 LT |
314 | * do a printk. This means that bus collisions go unreported. |
315 | */ | |
316 | if (temp & ALI1535_STS_BUSERR) { | |
97140342 | 317 | result = -ENXIO; |
1da177e4 LT |
318 | dev_dbg(&adap->dev, |
319 | "Error: no response or bus collision ADD=%02x\n", | |
320 | inb_p(SMBHSTADD)); | |
321 | } | |
322 | ||
323 | /* haven't ever seen this */ | |
324 | if (temp & ALI1535_STS_DEV) { | |
97140342 | 325 | result = -EIO; |
1da177e4 LT |
326 | dev_err(&adap->dev, "Error: device error\n"); |
327 | } | |
328 | ||
329 | /* check to see if the "command complete" indication is set */ | |
330 | if (!(temp & ALI1535_STS_DONE)) { | |
97140342 | 331 | result = -ETIMEDOUT; |
1da177e4 LT |
332 | dev_err(&adap->dev, "Error: command never completed\n"); |
333 | } | |
334 | ||
335 | dev_dbg(&adap->dev, "Transaction (post): STS=%02x, TYP=%02x, " | |
336 | "CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n", | |
337 | inb_p(SMBHSTSTS), inb_p(SMBHSTTYP), inb_p(SMBHSTCMD), | |
338 | inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); | |
339 | ||
340 | /* take consequent actions for error conditions */ | |
341 | if (!(temp & ALI1535_STS_DONE)) { | |
342 | /* issue "kill" to reset host controller */ | |
3fea5df4 LC |
343 | outb_p(ALI1535_KILL, SMBHSTTYP); |
344 | outb_p(0xFF, SMBHSTSTS); | |
1da177e4 LT |
345 | } else if (temp & ALI1535_STS_ERR) { |
346 | /* issue "timeout" to reset all devices on bus */ | |
3fea5df4 LC |
347 | outb_p(ALI1535_T_OUT, SMBHSTTYP); |
348 | outb_p(0xFF, SMBHSTSTS); | |
1da177e4 LT |
349 | } |
350 | ||
351 | return result; | |
352 | } | |
353 | ||
97140342 | 354 | /* Return negative errno on error. */ |
1da177e4 LT |
355 | static s32 ali1535_access(struct i2c_adapter *adap, u16 addr, |
356 | unsigned short flags, char read_write, u8 command, | |
357 | int size, union i2c_smbus_data *data) | |
358 | { | |
359 | int i, len; | |
360 | int temp; | |
361 | int timeout; | |
362 | s32 result = 0; | |
363 | ||
1da177e4 LT |
364 | /* make sure SMBus is idle */ |
365 | temp = inb_p(SMBHSTSTS); | |
366 | for (timeout = 0; | |
367 | (timeout < MAX_TIMEOUT) && !(temp & ALI1535_STS_IDLE); | |
368 | timeout++) { | |
3fea5df4 | 369 | usleep_range(1000, 2000); |
1da177e4 LT |
370 | temp = inb_p(SMBHSTSTS); |
371 | } | |
372 | if (timeout >= MAX_TIMEOUT) | |
373 | dev_warn(&adap->dev, "Idle wait Timeout! STS=0x%02x\n", temp); | |
374 | ||
375 | /* clear status register (clear-on-write) */ | |
376 | outb_p(0xFF, SMBHSTSTS); | |
377 | ||
378 | switch (size) { | |
1da177e4 LT |
379 | case I2C_SMBUS_QUICK: |
380 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
381 | SMBHSTADD); | |
382 | size = ALI1535_QUICK; | |
383 | outb_p(size, SMBHSTTYP); /* output command */ | |
384 | break; | |
385 | case I2C_SMBUS_BYTE: | |
386 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
387 | SMBHSTADD); | |
388 | size = ALI1535_BYTE; | |
389 | outb_p(size, SMBHSTTYP); /* output command */ | |
390 | if (read_write == I2C_SMBUS_WRITE) | |
391 | outb_p(command, SMBHSTCMD); | |
392 | break; | |
393 | case I2C_SMBUS_BYTE_DATA: | |
394 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
395 | SMBHSTADD); | |
396 | size = ALI1535_BYTE_DATA; | |
397 | outb_p(size, SMBHSTTYP); /* output command */ | |
398 | outb_p(command, SMBHSTCMD); | |
399 | if (read_write == I2C_SMBUS_WRITE) | |
400 | outb_p(data->byte, SMBHSTDAT0); | |
401 | break; | |
402 | case I2C_SMBUS_WORD_DATA: | |
403 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
404 | SMBHSTADD); | |
405 | size = ALI1535_WORD_DATA; | |
406 | outb_p(size, SMBHSTTYP); /* output command */ | |
407 | outb_p(command, SMBHSTCMD); | |
408 | if (read_write == I2C_SMBUS_WRITE) { | |
409 | outb_p(data->word & 0xff, SMBHSTDAT0); | |
410 | outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1); | |
411 | } | |
412 | break; | |
413 | case I2C_SMBUS_BLOCK_DATA: | |
414 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), | |
415 | SMBHSTADD); | |
416 | size = ALI1535_BLOCK_DATA; | |
417 | outb_p(size, SMBHSTTYP); /* output command */ | |
418 | outb_p(command, SMBHSTCMD); | |
419 | if (read_write == I2C_SMBUS_WRITE) { | |
420 | len = data->block[0]; | |
421 | if (len < 0) { | |
422 | len = 0; | |
423 | data->block[0] = len; | |
424 | } | |
425 | if (len > 32) { | |
426 | len = 32; | |
427 | data->block[0] = len; | |
428 | } | |
429 | outb_p(len, SMBHSTDAT0); | |
430 | /* Reset SMBBLKDAT */ | |
431 | outb_p(inb_p(SMBHSTTYP) | ALI1535_BLOCK_CLR, SMBHSTTYP); | |
432 | for (i = 1; i <= len; i++) | |
433 | outb_p(data->block[i], SMBBLKDAT); | |
434 | } | |
435 | break; | |
ac7fc4fb JD |
436 | default: |
437 | dev_warn(&adap->dev, "Unsupported transaction %d\n", size); | |
438 | result = -EOPNOTSUPP; | |
439 | goto EXIT; | |
1da177e4 LT |
440 | } |
441 | ||
97140342 DB |
442 | result = ali1535_transaction(adap); |
443 | if (result) | |
1da177e4 | 444 | goto EXIT; |
1da177e4 LT |
445 | |
446 | if ((read_write == I2C_SMBUS_WRITE) || (size == ALI1535_QUICK)) { | |
447 | result = 0; | |
448 | goto EXIT; | |
449 | } | |
450 | ||
451 | switch (size) { | |
452 | case ALI1535_BYTE: /* Result put in SMBHSTDAT0 */ | |
453 | data->byte = inb_p(SMBHSTDAT0); | |
454 | break; | |
455 | case ALI1535_BYTE_DATA: | |
456 | data->byte = inb_p(SMBHSTDAT0); | |
457 | break; | |
458 | case ALI1535_WORD_DATA: | |
459 | data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8); | |
460 | break; | |
461 | case ALI1535_BLOCK_DATA: | |
462 | len = inb_p(SMBHSTDAT0); | |
463 | if (len > 32) | |
464 | len = 32; | |
465 | data->block[0] = len; | |
466 | /* Reset SMBBLKDAT */ | |
467 | outb_p(inb_p(SMBHSTTYP) | ALI1535_BLOCK_CLR, SMBHSTTYP); | |
468 | for (i = 1; i <= data->block[0]; i++) { | |
469 | data->block[i] = inb_p(SMBBLKDAT); | |
470 | dev_dbg(&adap->dev, "Blk: len=%d, i=%d, data=%02x\n", | |
471 | len, i, data->block[i]); | |
472 | } | |
473 | break; | |
474 | } | |
475 | EXIT: | |
1da177e4 LT |
476 | return result; |
477 | } | |
478 | ||
479 | ||
480 | static u32 ali1535_func(struct i2c_adapter *adapter) | |
481 | { | |
482 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | | |
483 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | | |
484 | I2C_FUNC_SMBUS_BLOCK_DATA; | |
485 | } | |
486 | ||
8f9082c5 | 487 | static const struct i2c_algorithm smbus_algorithm = { |
1da177e4 LT |
488 | .smbus_xfer = ali1535_access, |
489 | .functionality = ali1535_func, | |
490 | }; | |
491 | ||
492 | static struct i2c_adapter ali1535_adapter = { | |
493 | .owner = THIS_MODULE, | |
3401b2ff | 494 | .class = I2C_CLASS_HWMON | I2C_CLASS_SPD, |
1da177e4 | 495 | .algo = &smbus_algorithm, |
1da177e4 LT |
496 | }; |
497 | ||
3fea5df4 | 498 | static DEFINE_PCI_DEVICE_TABLE(ali1535_ids) = { |
1da177e4 LT |
499 | { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) }, |
500 | { }, | |
501 | }; | |
502 | ||
3fea5df4 | 503 | MODULE_DEVICE_TABLE(pci, ali1535_ids); |
1da177e4 LT |
504 | |
505 | static int __devinit ali1535_probe(struct pci_dev *dev, const struct pci_device_id *id) | |
506 | { | |
507 | if (ali1535_setup(dev)) { | |
508 | dev_warn(&dev->dev, | |
509 | "ALI1535 not detected, module not inserted.\n"); | |
510 | return -ENODEV; | |
511 | } | |
512 | ||
405ae7d3 | 513 | /* set up the sysfs linkage to our parent device */ |
1da177e4 LT |
514 | ali1535_adapter.dev.parent = &dev->dev; |
515 | ||
2096b956 | 516 | snprintf(ali1535_adapter.name, sizeof(ali1535_adapter.name), |
65a2d74b | 517 | "SMBus ALI1535 adapter at %04x", ali1535_offset); |
1da177e4 LT |
518 | return i2c_add_adapter(&ali1535_adapter); |
519 | } | |
520 | ||
521 | static void __devexit ali1535_remove(struct pci_dev *dev) | |
522 | { | |
523 | i2c_del_adapter(&ali1535_adapter); | |
524 | release_region(ali1535_smba, ALI1535_SMB_IOSIZE); | |
525 | } | |
526 | ||
527 | static struct pci_driver ali1535_driver = { | |
528 | .name = "ali1535_smbus", | |
529 | .id_table = ali1535_ids, | |
530 | .probe = ali1535_probe, | |
531 | .remove = __devexit_p(ali1535_remove), | |
532 | }; | |
533 | ||
534 | static int __init i2c_ali1535_init(void) | |
535 | { | |
536 | return pci_register_driver(&ali1535_driver); | |
537 | } | |
538 | ||
539 | static void __exit i2c_ali1535_exit(void) | |
540 | { | |
541 | pci_unregister_driver(&ali1535_driver); | |
542 | } | |
543 | ||
544 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, " | |
545 | "Philip Edelbrock <phil@netroedge.com>, " | |
546 | "Mark D. Studebaker <mdsxyz123@yahoo.com> " | |
547 | "and Dan Eaton <dan.eaton@rocketlogix.com>"); | |
548 | MODULE_DESCRIPTION("ALI1535 SMBus driver"); | |
549 | MODULE_LICENSE("GPL"); | |
550 | ||
551 | module_init(i2c_ali1535_init); | |
552 | module_exit(i2c_ali1535_exit); |