1 | // SPDX-License-Identifier: GPL-2.0-or-later |
2 | /* |
3 | * Copyright (c) 2000 Frodo Looijaard <frodol@dds.nl>, |
4 | * Philip Edelbrock <phil@netroedge.com>, |
5 | * Mark D. Studebaker <mdsxyz123@yahoo.com>, |
6 | * Dan Eaton <dan.eaton@rocketlogix.com> and |
7 | * Stephen Rousset <stephen.rousset@rocketlogix.com> |
8 | */ |
9 | |
10 | /* |
11 | This is the driver for the SMB Host controller on |
12 | Acer Labs Inc. (ALI) M1535 South Bridge. |
13 | |
14 | The M1535 is a South bridge for portable systems. |
15 | It is very similar to the M15x3 South bridges also produced |
16 | by Acer Labs Inc. Some of the registers within the part |
17 | have moved and some have been redefined slightly. Additionally, |
18 | the sequencing of the SMBus transactions has been modified |
19 | to be more consistent with the sequencing recommended by |
20 | the manufacturer and observed through testing. These |
21 | changes are reflected in this driver and can be identified |
22 | by comparing this driver to the i2c-ali15x3 driver. |
23 | For an overview of these chips see http://www.acerlabs.com |
24 | |
25 | The SMB controller is part of the 7101 device, which is an |
26 | ACPI-compliant Power Management Unit (PMU). |
27 | |
28 | The whole 7101 device has to be enabled for the SMB to work. |
29 | You can't just enable the SMB alone. |
30 | The SMB and the ACPI have separate I/O spaces. |
31 | We make sure that the SMB is enabled. We leave the ACPI alone. |
32 | |
33 | This driver controls the SMB Host only. |
34 | |
35 | This driver does not use interrupts. |
36 | */ |
37 | |
38 | |
39 | /* Note: we assume there can only be one ALI1535, with one SMBus interface */ |
40 | |
41 | #include <linux/module.h> |
42 | #include <linux/pci.h> |
43 | #include <linux/kernel.h> |
44 | #include <linux/stddef.h> |
45 | #include <linux/delay.h> |
46 | #include <linux/ioport.h> |
47 | #include <linux/i2c.h> |
48 | #include <linux/acpi.h> |
49 | #include <linux/io.h> |
50 | |
51 | |
52 | /* ALI1535 SMBus address offsets */ |
53 | #define SMBHSTSTS (0 + ali1535_smba) |
54 | #define SMBHSTTYP (1 + ali1535_smba) |
55 | #define SMBHSTPORT (2 + ali1535_smba) |
56 | #define SMBHSTCMD (7 + ali1535_smba) |
57 | #define SMBHSTADD (3 + ali1535_smba) |
58 | #define SMBHSTDAT0 (4 + ali1535_smba) |
59 | #define SMBHSTDAT1 (5 + ali1535_smba) |
60 | #define SMBBLKDAT (6 + ali1535_smba) |
61 | |
62 | /* PCI Address Constants */ |
63 | #define SMBCOM 0x004 |
64 | #define SMBREV 0x008 |
65 | #define SMBCFG 0x0D1 |
66 | #define SMBBA 0x0E2 |
67 | #define SMBHSTCFG 0x0F0 |
68 | #define SMBCLK 0x0F2 |
69 | |
70 | /* Other settings */ |
71 | #define MAX_TIMEOUT 500 /* times 1/100 sec */ |
72 | #define ALI1535_SMB_IOSIZE 32 |
73 | |
74 | #define ALI1535_SMB_DEFAULTBASE 0x8040 |
75 | |
76 | /* ALI1535 address lock bits */ |
77 | #define ALI1535_LOCK 0x06 /* dwe */ |
78 | |
79 | /* ALI1535 command constants */ |
80 | #define ALI1535_QUICK 0x00 |
81 | #define ALI1535_BYTE 0x10 |
82 | #define ALI1535_BYTE_DATA 0x20 |
83 | #define ALI1535_WORD_DATA 0x30 |
84 | #define ALI1535_BLOCK_DATA 0x40 |
85 | #define ALI1535_I2C_READ 0x60 |
86 | |
87 | #define ALI1535_DEV10B_EN 0x80 /* Enable 10-bit addressing in */ |
88 | /* I2C read */ |
89 | #define ALI1535_T_OUT 0x08 /* Time-out Command (write) */ |
90 | #define ALI1535_A_HIGH_BIT9 0x08 /* Bit 9 of 10-bit address in */ |
91 | /* Alert-Response-Address */ |
92 | /* (read) */ |
93 | #define ALI1535_KILL 0x04 /* Kill Command (write) */ |
94 | #define ALI1535_A_HIGH_BIT8 0x04 /* Bit 8 of 10-bit address in */ |
95 | /* Alert-Response-Address */ |
96 | /* (read) */ |
97 | |
98 | #define ALI1535_D_HI_MASK 0x03 /* Mask for isolating bits 9-8 */ |
99 | /* of 10-bit address in I2C */ |
100 | /* Read Command */ |
101 | |
102 | /* ALI1535 status register bits */ |
103 | #define ALI1535_STS_IDLE 0x04 |
104 | #define ALI1535_STS_BUSY 0x08 /* host busy */ |
105 | #define ALI1535_STS_DONE 0x10 /* transaction complete */ |
106 | #define ALI1535_STS_DEV 0x20 /* device error */ |
107 | #define ALI1535_STS_BUSERR 0x40 /* bus error */ |
108 | #define ALI1535_STS_FAIL 0x80 /* failed bus transaction */ |
109 | #define ALI1535_STS_ERR 0xE0 /* all the bad error bits */ |
110 | |
111 | #define ALI1535_BLOCK_CLR 0x04 /* reset block data index */ |
112 | |
113 | /* ALI1535 device address register bits */ |
114 | #define ALI1535_RD_ADDR 0x01 /* Read/Write Bit in Device */ |
115 | /* Address field */ |
116 | /* -> Write = 0 */ |
117 | /* -> Read = 1 */ |
118 | #define ALI1535_SMBIO_EN 0x04 /* SMB I/O Space enable */ |
119 | |
120 | static struct pci_driver ali1535_driver; |
121 | static unsigned long ali1535_smba; |
122 | static unsigned short ali1535_offset; |
123 | |
124 | /* Detect whether a ALI1535 can be found, and initialize it, where necessary. |
125 | Note the differences between kernels with the old PCI BIOS interface and |
126 | newer kernels with the real PCI interface. In compat.h some things are |
127 | defined to make the transition easier. */ |
128 | static int ali1535_setup(struct pci_dev *dev) |
129 | { |
130 | int retval; |
131 | unsigned char temp; |
132 | |
133 | /* Check the following things: |
134 | - SMB I/O address is initialized |
135 | - Device is enabled |
136 | - We can use the addresses |
137 | */ |
138 | |
139 | retval = pci_enable_device(dev); |
140 | if (retval) { |
141 | dev_err(&dev->dev, "ALI1535_smb can't enable device\n" ); |
142 | goto exit; |
143 | } |
144 | |
145 | /* Determine the address of the SMBus area */ |
146 | pci_read_config_word(dev, SMBBA, val: &ali1535_offset); |
147 | dev_dbg(&dev->dev, "ALI1535_smb is at offset 0x%04x\n" , ali1535_offset); |
148 | ali1535_offset &= (0xffff & ~(ALI1535_SMB_IOSIZE - 1)); |
149 | if (ali1535_offset == 0) { |
150 | dev_warn(&dev->dev, |
151 | "ALI1535_smb region uninitialized - upgrade BIOS?\n" ); |
152 | retval = -ENODEV; |
153 | goto exit; |
154 | } |
155 | |
156 | if (pci_resource_flags(dev, 0) & IORESOURCE_IO) |
157 | ali1535_smba = pci_resource_start(dev, 0) + ali1535_offset; |
158 | else |
159 | ali1535_smba = ali1535_offset; |
160 | |
161 | retval = acpi_check_region(start: ali1535_smba, ALI1535_SMB_IOSIZE, |
162 | name: ali1535_driver.name); |
163 | if (retval) |
164 | goto exit; |
165 | |
166 | if (!request_region(ali1535_smba, ALI1535_SMB_IOSIZE, |
167 | ali1535_driver.name)) { |
168 | dev_err(&dev->dev, "ALI1535_smb region 0x%lx already in use!\n" , |
169 | ali1535_smba); |
170 | retval = -EBUSY; |
171 | goto exit; |
172 | } |
173 | |
174 | /* check if whole device is enabled */ |
175 | pci_read_config_byte(dev, SMBCFG, val: &temp); |
176 | if ((temp & ALI1535_SMBIO_EN) == 0) { |
177 | dev_err(&dev->dev, "SMB device not enabled - upgrade BIOS?\n" ); |
178 | retval = -ENODEV; |
179 | goto exit_free; |
180 | } |
181 | |
182 | /* Is SMB Host controller enabled? */ |
183 | pci_read_config_byte(dev, SMBHSTCFG, val: &temp); |
184 | if ((temp & 1) == 0) { |
185 | dev_err(&dev->dev, "SMBus controller not enabled - upgrade BIOS?\n" ); |
186 | retval = -ENODEV; |
187 | goto exit_free; |
188 | } |
189 | |
190 | /* set SMB clock to 74KHz as recommended in data sheet */ |
191 | pci_write_config_byte(dev, SMBCLK, val: 0x20); |
192 | |
193 | /* |
194 | The interrupt routing for SMB is set up in register 0x77 in the |
195 | 1533 ISA Bridge device, NOT in the 7101 device. |
196 | Don't bother with finding the 1533 device and reading the register. |
197 | if ((....... & 0x0F) == 1) |
198 | dev_dbg(&dev->dev, "ALI1535 using Interrupt 9 for SMBus.\n"); |
199 | */ |
200 | pci_read_config_byte(dev, SMBREV, val: &temp); |
201 | dev_dbg(&dev->dev, "SMBREV = 0x%X\n" , temp); |
202 | dev_dbg(&dev->dev, "ALI1535_smba = 0x%lx\n" , ali1535_smba); |
203 | |
204 | return 0; |
205 | |
206 | exit_free: |
207 | release_region(ali1535_smba, ALI1535_SMB_IOSIZE); |
208 | exit: |
209 | return retval; |
210 | } |
211 | |
212 | static int ali1535_transaction(struct i2c_adapter *adap) |
213 | { |
214 | int temp; |
215 | int result = 0; |
216 | int timeout = 0; |
217 | |
218 | dev_dbg(&adap->dev, "Transaction (pre): STS=%02x, TYP=%02x, " |
219 | "CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n" , |
220 | inb_p(SMBHSTSTS), inb_p(SMBHSTTYP), inb_p(SMBHSTCMD), |
221 | inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); |
222 | |
223 | /* get status */ |
224 | temp = inb_p(SMBHSTSTS); |
225 | |
226 | /* Make sure the SMBus host is ready to start transmitting */ |
227 | /* Check the busy bit first */ |
228 | if (temp & ALI1535_STS_BUSY) { |
229 | /* If the host controller is still busy, it may have timed out |
230 | * in the previous transaction, resulting in a "SMBus Timeout" |
231 | * printk. I've tried the following to reset a stuck busy bit. |
232 | * 1. Reset the controller with an KILL command. (this |
233 | * doesn't seem to clear the controller if an external |
234 | * device is hung) |
235 | * 2. Reset the controller and the other SMBus devices with a |
236 | * T_OUT command. (this clears the host busy bit if an |
237 | * external device is hung, but it comes back upon a new |
238 | * access to a device) |
239 | * 3. Disable and reenable the controller in SMBHSTCFG. Worst |
240 | * case, nothing seems to work except power reset. |
241 | */ |
242 | |
243 | /* Try resetting entire SMB bus, including other devices - This |
244 | * may not work either - it clears the BUSY bit but then the |
245 | * BUSY bit may come back on when you try and use the chip |
246 | * again. If that's the case you are stuck. |
247 | */ |
248 | dev_info(&adap->dev, |
249 | "Resetting entire SMB Bus to clear busy condition (%02x)\n" , |
250 | temp); |
251 | outb_p(ALI1535_T_OUT, SMBHSTTYP); |
252 | temp = inb_p(SMBHSTSTS); |
253 | } |
254 | |
255 | /* now check the error bits and the busy bit */ |
256 | if (temp & (ALI1535_STS_ERR | ALI1535_STS_BUSY)) { |
257 | /* do a clear-on-write */ |
258 | outb_p(value: 0xFF, SMBHSTSTS); |
259 | temp = inb_p(SMBHSTSTS); |
260 | if (temp & (ALI1535_STS_ERR | ALI1535_STS_BUSY)) { |
261 | /* This is probably going to be correctable only by a |
262 | * power reset as one of the bits now appears to be |
263 | * stuck */ |
264 | /* This may be a bus or device with electrical problems. */ |
265 | dev_err(&adap->dev, |
266 | "SMBus reset failed! (0x%02x) - controller or " |
267 | "device on bus is probably hung\n" , temp); |
268 | return -EBUSY; |
269 | } |
270 | } else { |
271 | /* check and clear done bit */ |
272 | if (temp & ALI1535_STS_DONE) |
273 | outb_p(value: temp, SMBHSTSTS); |
274 | } |
275 | |
276 | /* start the transaction by writing anything to the start register */ |
277 | outb_p(value: 0xFF, SMBHSTPORT); |
278 | |
279 | /* We will always wait for a fraction of a second! */ |
280 | timeout = 0; |
281 | do { |
282 | usleep_range(min: 1000, max: 2000); |
283 | temp = inb_p(SMBHSTSTS); |
284 | } while (((temp & ALI1535_STS_BUSY) && !(temp & ALI1535_STS_IDLE)) |
285 | && (timeout++ < MAX_TIMEOUT)); |
286 | |
287 | /* If the SMBus is still busy, we give up */ |
288 | if (timeout > MAX_TIMEOUT) { |
289 | result = -ETIMEDOUT; |
290 | dev_err(&adap->dev, "SMBus Timeout!\n" ); |
291 | } |
292 | |
293 | if (temp & ALI1535_STS_FAIL) { |
294 | result = -EIO; |
295 | dev_dbg(&adap->dev, "Error: Failed bus transaction\n" ); |
296 | } |
297 | |
298 | /* Unfortunately the ALI SMB controller maps "no response" and "bus |
299 | * collision" into a single bit. No response is the usual case so don't |
300 | * do a printk. This means that bus collisions go unreported. |
301 | */ |
302 | if (temp & ALI1535_STS_BUSERR) { |
303 | result = -ENXIO; |
304 | dev_dbg(&adap->dev, |
305 | "Error: no response or bus collision ADD=%02x\n" , |
306 | inb_p(SMBHSTADD)); |
307 | } |
308 | |
309 | /* haven't ever seen this */ |
310 | if (temp & ALI1535_STS_DEV) { |
311 | result = -EIO; |
312 | dev_err(&adap->dev, "Error: device error\n" ); |
313 | } |
314 | |
315 | /* check to see if the "command complete" indication is set */ |
316 | if (!(temp & ALI1535_STS_DONE)) { |
317 | result = -ETIMEDOUT; |
318 | dev_err(&adap->dev, "Error: command never completed\n" ); |
319 | } |
320 | |
321 | dev_dbg(&adap->dev, "Transaction (post): STS=%02x, TYP=%02x, " |
322 | "CMD=%02x, ADD=%02x, DAT0=%02x, DAT1=%02x\n" , |
323 | inb_p(SMBHSTSTS), inb_p(SMBHSTTYP), inb_p(SMBHSTCMD), |
324 | inb_p(SMBHSTADD), inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); |
325 | |
326 | /* take consequent actions for error conditions */ |
327 | if (!(temp & ALI1535_STS_DONE)) { |
328 | /* issue "kill" to reset host controller */ |
329 | outb_p(ALI1535_KILL, SMBHSTTYP); |
330 | outb_p(value: 0xFF, SMBHSTSTS); |
331 | } else if (temp & ALI1535_STS_ERR) { |
332 | /* issue "timeout" to reset all devices on bus */ |
333 | outb_p(ALI1535_T_OUT, SMBHSTTYP); |
334 | outb_p(value: 0xFF, SMBHSTSTS); |
335 | } |
336 | |
337 | return result; |
338 | } |
339 | |
340 | /* Return negative errno on error. */ |
341 | static s32 ali1535_access(struct i2c_adapter *adap, u16 addr, |
342 | unsigned short flags, char read_write, u8 command, |
343 | int size, union i2c_smbus_data *data) |
344 | { |
345 | int i, len; |
346 | int temp; |
347 | int timeout; |
348 | s32 result = 0; |
349 | |
350 | /* make sure SMBus is idle */ |
351 | temp = inb_p(SMBHSTSTS); |
352 | for (timeout = 0; |
353 | (timeout < MAX_TIMEOUT) && !(temp & ALI1535_STS_IDLE); |
354 | timeout++) { |
355 | usleep_range(min: 1000, max: 2000); |
356 | temp = inb_p(SMBHSTSTS); |
357 | } |
358 | if (timeout >= MAX_TIMEOUT) |
359 | dev_warn(&adap->dev, "Idle wait Timeout! STS=0x%02x\n" , temp); |
360 | |
361 | /* clear status register (clear-on-write) */ |
362 | outb_p(value: 0xFF, SMBHSTSTS); |
363 | |
364 | switch (size) { |
365 | case I2C_SMBUS_QUICK: |
366 | outb_p(value: ((addr & 0x7f) << 1) | (read_write & 0x01), |
367 | SMBHSTADD); |
368 | size = ALI1535_QUICK; |
369 | outb_p(value: size, SMBHSTTYP); /* output command */ |
370 | break; |
371 | case I2C_SMBUS_BYTE: |
372 | outb_p(value: ((addr & 0x7f) << 1) | (read_write & 0x01), |
373 | SMBHSTADD); |
374 | size = ALI1535_BYTE; |
375 | outb_p(value: size, SMBHSTTYP); /* output command */ |
376 | if (read_write == I2C_SMBUS_WRITE) |
377 | outb_p(value: command, SMBHSTCMD); |
378 | break; |
379 | case I2C_SMBUS_BYTE_DATA: |
380 | outb_p(value: ((addr & 0x7f) << 1) | (read_write & 0x01), |
381 | SMBHSTADD); |
382 | size = ALI1535_BYTE_DATA; |
383 | outb_p(value: size, SMBHSTTYP); /* output command */ |
384 | outb_p(value: command, SMBHSTCMD); |
385 | if (read_write == I2C_SMBUS_WRITE) |
386 | outb_p(value: data->byte, SMBHSTDAT0); |
387 | break; |
388 | case I2C_SMBUS_WORD_DATA: |
389 | outb_p(value: ((addr & 0x7f) << 1) | (read_write & 0x01), |
390 | SMBHSTADD); |
391 | size = ALI1535_WORD_DATA; |
392 | outb_p(value: size, SMBHSTTYP); /* output command */ |
393 | outb_p(value: command, SMBHSTCMD); |
394 | if (read_write == I2C_SMBUS_WRITE) { |
395 | outb_p(value: data->word & 0xff, SMBHSTDAT0); |
396 | outb_p(value: (data->word & 0xff00) >> 8, SMBHSTDAT1); |
397 | } |
398 | break; |
399 | case I2C_SMBUS_BLOCK_DATA: |
400 | outb_p(value: ((addr & 0x7f) << 1) | (read_write & 0x01), |
401 | SMBHSTADD); |
402 | size = ALI1535_BLOCK_DATA; |
403 | outb_p(value: size, SMBHSTTYP); /* output command */ |
404 | outb_p(value: command, SMBHSTCMD); |
405 | if (read_write == I2C_SMBUS_WRITE) { |
406 | len = data->block[0]; |
407 | if (len < 0) { |
408 | len = 0; |
409 | data->block[0] = len; |
410 | } |
411 | if (len > 32) { |
412 | len = 32; |
413 | data->block[0] = len; |
414 | } |
415 | outb_p(value: len, SMBHSTDAT0); |
416 | /* Reset SMBBLKDAT */ |
417 | outb_p(inb_p(SMBHSTTYP) | ALI1535_BLOCK_CLR, SMBHSTTYP); |
418 | for (i = 1; i <= len; i++) |
419 | outb_p(value: data->block[i], SMBBLKDAT); |
420 | } |
421 | break; |
422 | default: |
423 | dev_warn(&adap->dev, "Unsupported transaction %d\n" , size); |
424 | result = -EOPNOTSUPP; |
425 | goto EXIT; |
426 | } |
427 | |
428 | result = ali1535_transaction(adap); |
429 | if (result) |
430 | goto EXIT; |
431 | |
432 | if ((read_write == I2C_SMBUS_WRITE) || (size == ALI1535_QUICK)) { |
433 | result = 0; |
434 | goto EXIT; |
435 | } |
436 | |
437 | switch (size) { |
438 | case ALI1535_BYTE: /* Result put in SMBHSTDAT0 */ |
439 | data->byte = inb_p(SMBHSTDAT0); |
440 | break; |
441 | case ALI1535_BYTE_DATA: |
442 | data->byte = inb_p(SMBHSTDAT0); |
443 | break; |
444 | case ALI1535_WORD_DATA: |
445 | data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8); |
446 | break; |
447 | case ALI1535_BLOCK_DATA: |
448 | len = inb_p(SMBHSTDAT0); |
449 | if (len > 32) |
450 | len = 32; |
451 | data->block[0] = len; |
452 | /* Reset SMBBLKDAT */ |
453 | outb_p(inb_p(SMBHSTTYP) | ALI1535_BLOCK_CLR, SMBHSTTYP); |
454 | for (i = 1; i <= data->block[0]; i++) { |
455 | data->block[i] = inb_p(SMBBLKDAT); |
456 | dev_dbg(&adap->dev, "Blk: len=%d, i=%d, data=%02x\n" , |
457 | len, i, data->block[i]); |
458 | } |
459 | break; |
460 | } |
461 | EXIT: |
462 | return result; |
463 | } |
464 | |
465 | |
466 | static u32 ali1535_func(struct i2c_adapter *adapter) |
467 | { |
468 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | |
469 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | |
470 | I2C_FUNC_SMBUS_BLOCK_DATA; |
471 | } |
472 | |
473 | static const struct i2c_algorithm smbus_algorithm = { |
474 | .smbus_xfer = ali1535_access, |
475 | .functionality = ali1535_func, |
476 | }; |
477 | |
478 | static struct i2c_adapter ali1535_adapter = { |
479 | .owner = THIS_MODULE, |
480 | .class = I2C_CLASS_HWMON, |
481 | .algo = &smbus_algorithm, |
482 | }; |
483 | |
484 | static const struct pci_device_id ali1535_ids[] = { |
485 | { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) }, |
486 | { }, |
487 | }; |
488 | |
489 | MODULE_DEVICE_TABLE(pci, ali1535_ids); |
490 | |
491 | static int ali1535_probe(struct pci_dev *dev, const struct pci_device_id *id) |
492 | { |
493 | if (ali1535_setup(dev)) { |
494 | dev_warn(&dev->dev, |
495 | "ALI1535 not detected, module not inserted.\n" ); |
496 | return -ENODEV; |
497 | } |
498 | |
499 | /* set up the sysfs linkage to our parent device */ |
500 | ali1535_adapter.dev.parent = &dev->dev; |
501 | |
502 | snprintf(buf: ali1535_adapter.name, size: sizeof(ali1535_adapter.name), |
503 | fmt: "SMBus ALI1535 adapter at %04x" , ali1535_offset); |
504 | return i2c_add_adapter(adap: &ali1535_adapter); |
505 | } |
506 | |
507 | static void ali1535_remove(struct pci_dev *dev) |
508 | { |
509 | i2c_del_adapter(adap: &ali1535_adapter); |
510 | release_region(ali1535_smba, ALI1535_SMB_IOSIZE); |
511 | |
512 | /* |
513 | * do not call pci_disable_device(dev) since it can cause hard hangs on |
514 | * some systems during power-off |
515 | */ |
516 | } |
517 | |
518 | static struct pci_driver ali1535_driver = { |
519 | .name = "ali1535_smbus" , |
520 | .id_table = ali1535_ids, |
521 | .probe = ali1535_probe, |
522 | .remove = ali1535_remove, |
523 | }; |
524 | |
525 | module_pci_driver(ali1535_driver); |
526 | |
527 | MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>" ); |
528 | MODULE_AUTHOR("Philip Edelbrock <phil@netroedge.com>" ); |
529 | MODULE_AUTHOR("Mark D. Studebaker <mdsxyz123@yahoo.com>" ); |
530 | MODULE_AUTHOR("Dan Eaton <dan.eaton@rocketlogix.com>" ); |
531 | MODULE_DESCRIPTION("ALI1535 SMBus driver" ); |
532 | MODULE_LICENSE("GPL" ); |
533 | |