Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | ali15x3.c - Part of lm_sensors, Linux kernel modules for hardware |
| 3 | monitoring |
| 4 | Copyright (c) 1999 Frodo Looijaard <frodol@dds.nl> and |
| 5 | Philip Edelbrock <phil@netroedge.com> and |
| 6 | Mark D. Studebaker <mdsxyz123@yahoo.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. |
| 21 | */ |
| 22 | |
| 23 | /* |
| 24 | This is the driver for the SMB Host controller on |
| 25 | Acer Labs Inc. (ALI) M1541 and M1543C South Bridges. |
| 26 | |
| 27 | The M1543C is a South bridge for desktop systems. |
| 28 | The M1533 is a South bridge for portable systems. |
| 29 | They are part of the following ALI chipsets: |
| 30 | "Aladdin Pro 2": Includes the M1621 Slot 1 North bridge |
| 31 | with AGP and 100MHz CPU Front Side bus |
| 32 | "Aladdin V": Includes the M1541 Socket 7 North bridge |
| 33 | with AGP and 100MHz CPU Front Side bus |
| 34 | "Aladdin IV": Includes the M1541 Socket 7 North bridge |
| 35 | with host bus up to 83.3 MHz. |
| 36 | For an overview of these chips see http://www.acerlabs.com |
| 37 | |
| 38 | The M1533/M1543C devices appear as FOUR separate devices |
| 39 | on the PCI bus. An output of lspci will show something similar |
| 40 | to the following: |
| 41 | |
| 42 | 00:02.0 USB Controller: Acer Laboratories Inc. M5237 |
| 43 | 00:03.0 Bridge: Acer Laboratories Inc. M7101 |
| 44 | 00:07.0 ISA bridge: Acer Laboratories Inc. M1533 |
| 45 | 00:0f.0 IDE interface: Acer Laboratories Inc. M5229 |
| 46 | |
| 47 | The SMB controller is part of the 7101 device, which is an |
| 48 | ACPI-compliant Power Management Unit (PMU). |
| 49 | |
| 50 | The whole 7101 device has to be enabled for the SMB to work. |
| 51 | You can't just enable the SMB alone. |
| 52 | The SMB and the ACPI have separate I/O spaces. |
| 53 | We make sure that the SMB is enabled. We leave the ACPI alone. |
| 54 | |
| 55 | This driver controls the SMB Host only. |
| 56 | The SMB Slave controller on the M15X3 is not enabled. |
| 57 | |
| 58 | This driver does not use interrupts. |
| 59 | */ |
| 60 | |
| 61 | /* Note: we assume there can only be one ALI15X3, with one SMBus interface */ |
| 62 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #include <linux/module.h> |
| 64 | #include <linux/pci.h> |
| 65 | #include <linux/kernel.h> |
| 66 | #include <linux/stddef.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #include <linux/ioport.h> |
| 68 | #include <linux/delay.h> |
| 69 | #include <linux/i2c.h> |
| 70 | #include <linux/init.h> |
| 71 | #include <asm/io.h> |
| 72 | |
| 73 | /* ALI15X3 SMBus address offsets */ |
| 74 | #define SMBHSTSTS (0 + ali15x3_smba) |
| 75 | #define SMBHSTCNT (1 + ali15x3_smba) |
| 76 | #define SMBHSTSTART (2 + ali15x3_smba) |
| 77 | #define SMBHSTCMD (7 + ali15x3_smba) |
| 78 | #define SMBHSTADD (3 + ali15x3_smba) |
| 79 | #define SMBHSTDAT0 (4 + ali15x3_smba) |
| 80 | #define SMBHSTDAT1 (5 + ali15x3_smba) |
| 81 | #define SMBBLKDAT (6 + ali15x3_smba) |
| 82 | |
| 83 | /* PCI Address Constants */ |
| 84 | #define SMBCOM 0x004 |
| 85 | #define SMBBA 0x014 |
| 86 | #define SMBATPC 0x05B /* used to unlock xxxBA registers */ |
| 87 | #define SMBHSTCFG 0x0E0 |
| 88 | #define SMBSLVC 0x0E1 |
| 89 | #define SMBCLK 0x0E2 |
| 90 | #define SMBREV 0x008 |
| 91 | |
| 92 | /* Other settings */ |
| 93 | #define MAX_TIMEOUT 200 /* times 1/100 sec */ |
| 94 | #define ALI15X3_SMB_IOSIZE 32 |
| 95 | |
| 96 | /* this is what the Award 1004 BIOS sets them to on a ASUS P5A MB. |
| 97 | We don't use these here. If the bases aren't set to some value we |
| 98 | tell user to upgrade BIOS and we fail. |
| 99 | */ |
| 100 | #define ALI15X3_SMB_DEFAULTBASE 0xE800 |
| 101 | |
| 102 | /* ALI15X3 address lock bits */ |
| 103 | #define ALI15X3_LOCK 0x06 |
| 104 | |
| 105 | /* ALI15X3 command constants */ |
| 106 | #define ALI15X3_ABORT 0x02 |
| 107 | #define ALI15X3_T_OUT 0x04 |
| 108 | #define ALI15X3_QUICK 0x00 |
| 109 | #define ALI15X3_BYTE 0x10 |
| 110 | #define ALI15X3_BYTE_DATA 0x20 |
| 111 | #define ALI15X3_WORD_DATA 0x30 |
| 112 | #define ALI15X3_BLOCK_DATA 0x40 |
| 113 | #define ALI15X3_BLOCK_CLR 0x80 |
| 114 | |
| 115 | /* ALI15X3 status register bits */ |
| 116 | #define ALI15X3_STS_IDLE 0x04 |
| 117 | #define ALI15X3_STS_BUSY 0x08 |
| 118 | #define ALI15X3_STS_DONE 0x10 |
| 119 | #define ALI15X3_STS_DEV 0x20 /* device error */ |
| 120 | #define ALI15X3_STS_COLL 0x40 /* collision or no response */ |
| 121 | #define ALI15X3_STS_TERM 0x80 /* terminated by abort */ |
| 122 | #define ALI15X3_STS_ERR 0xE0 /* all the bad error bits */ |
| 123 | |
| 124 | |
| 125 | /* If force_addr is set to anything different from 0, we forcibly enable |
| 126 | the device at the given address. */ |
Jean Delvare | 6050709 | 2005-09-25 16:23:07 +0200 | [diff] [blame] | 127 | static u16 force_addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | module_param(force_addr, ushort, 0); |
| 129 | MODULE_PARM_DESC(force_addr, |
| 130 | "Initialize the base address of the i2c controller"); |
| 131 | |
Jean Delvare | d6072f8 | 2005-09-25 16:37:04 +0200 | [diff] [blame] | 132 | static struct pci_driver ali15x3_driver; |
Jean Delvare | 6050709 | 2005-09-25 16:23:07 +0200 | [diff] [blame] | 133 | static unsigned short ali15x3_smba; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
| 135 | static int ali15x3_setup(struct pci_dev *ALI15X3_dev) |
| 136 | { |
| 137 | u16 a; |
| 138 | unsigned char temp; |
| 139 | |
| 140 | /* Check the following things: |
| 141 | - SMB I/O address is initialized |
| 142 | - Device is enabled |
| 143 | - We can use the addresses |
| 144 | */ |
| 145 | |
| 146 | /* Unlock the register. |
| 147 | The data sheet says that the address registers are read-only |
| 148 | if the lock bits are 1, but in fact the address registers |
| 149 | are zero unless you clear the lock bits. |
| 150 | */ |
| 151 | pci_read_config_byte(ALI15X3_dev, SMBATPC, &temp); |
| 152 | if (temp & ALI15X3_LOCK) { |
| 153 | temp &= ~ALI15X3_LOCK; |
| 154 | pci_write_config_byte(ALI15X3_dev, SMBATPC, temp); |
| 155 | } |
| 156 | |
| 157 | /* Determine the address of the SMBus area */ |
| 158 | pci_read_config_word(ALI15X3_dev, SMBBA, &ali15x3_smba); |
| 159 | ali15x3_smba &= (0xffff & ~(ALI15X3_SMB_IOSIZE - 1)); |
| 160 | if (ali15x3_smba == 0 && force_addr == 0) { |
| 161 | dev_err(&ALI15X3_dev->dev, "ALI15X3_smb region uninitialized " |
| 162 | "- upgrade BIOS or use force_addr=0xaddr\n"); |
| 163 | return -ENODEV; |
| 164 | } |
| 165 | |
| 166 | if(force_addr) |
| 167 | ali15x3_smba = force_addr & ~(ALI15X3_SMB_IOSIZE - 1); |
| 168 | |
Jean Delvare | d6072f8 | 2005-09-25 16:37:04 +0200 | [diff] [blame] | 169 | if (!request_region(ali15x3_smba, ALI15X3_SMB_IOSIZE, |
| 170 | ali15x3_driver.name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | dev_err(&ALI15X3_dev->dev, |
| 172 | "ALI15X3_smb region 0x%x already in use!\n", |
| 173 | ali15x3_smba); |
| 174 | return -ENODEV; |
| 175 | } |
| 176 | |
| 177 | if(force_addr) { |
| 178 | dev_info(&ALI15X3_dev->dev, "forcing ISA address 0x%04X\n", |
| 179 | ali15x3_smba); |
| 180 | if (PCIBIOS_SUCCESSFUL != pci_write_config_word(ALI15X3_dev, |
| 181 | SMBBA, |
| 182 | ali15x3_smba)) |
| 183 | goto error; |
| 184 | if (PCIBIOS_SUCCESSFUL != pci_read_config_word(ALI15X3_dev, |
| 185 | SMBBA, &a)) |
| 186 | goto error; |
| 187 | if ((a & ~(ALI15X3_SMB_IOSIZE - 1)) != ali15x3_smba) { |
| 188 | /* make sure it works */ |
| 189 | dev_err(&ALI15X3_dev->dev, |
| 190 | "force address failed - not supported?\n"); |
| 191 | goto error; |
| 192 | } |
| 193 | } |
| 194 | /* check if whole device is enabled */ |
| 195 | pci_read_config_byte(ALI15X3_dev, SMBCOM, &temp); |
| 196 | if ((temp & 1) == 0) { |
| 197 | dev_info(&ALI15X3_dev->dev, "enabling SMBus device\n"); |
| 198 | pci_write_config_byte(ALI15X3_dev, SMBCOM, temp | 0x01); |
| 199 | } |
| 200 | |
| 201 | /* Is SMB Host controller enabled? */ |
| 202 | pci_read_config_byte(ALI15X3_dev, SMBHSTCFG, &temp); |
| 203 | if ((temp & 1) == 0) { |
| 204 | dev_info(&ALI15X3_dev->dev, "enabling SMBus controller\n"); |
| 205 | pci_write_config_byte(ALI15X3_dev, SMBHSTCFG, temp | 0x01); |
| 206 | } |
| 207 | |
| 208 | /* set SMB clock to 74KHz as recommended in data sheet */ |
| 209 | pci_write_config_byte(ALI15X3_dev, SMBCLK, 0x20); |
| 210 | |
| 211 | /* |
| 212 | The interrupt routing for SMB is set up in register 0x77 in the |
| 213 | 1533 ISA Bridge device, NOT in the 7101 device. |
| 214 | Don't bother with finding the 1533 device and reading the register. |
| 215 | if ((....... & 0x0F) == 1) |
| 216 | dev_dbg(&ALI15X3_dev->dev, "ALI15X3 using Interrupt 9 for SMBus.\n"); |
| 217 | */ |
| 218 | pci_read_config_byte(ALI15X3_dev, SMBREV, &temp); |
| 219 | dev_dbg(&ALI15X3_dev->dev, "SMBREV = 0x%X\n", temp); |
| 220 | dev_dbg(&ALI15X3_dev->dev, "iALI15X3_smba = 0x%X\n", ali15x3_smba); |
| 221 | |
| 222 | return 0; |
| 223 | error: |
| 224 | release_region(ali15x3_smba, ALI15X3_SMB_IOSIZE); |
| 225 | return -ENODEV; |
| 226 | } |
| 227 | |
| 228 | /* Another internally used function */ |
| 229 | static int ali15x3_transaction(struct i2c_adapter *adap) |
| 230 | { |
| 231 | int temp; |
| 232 | int result = 0; |
| 233 | int timeout = 0; |
| 234 | |
| 235 | dev_dbg(&adap->dev, "Transaction (pre): STS=%02x, CNT=%02x, CMD=%02x, " |
| 236 | "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTSTS), |
| 237 | inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD), |
| 238 | inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); |
| 239 | |
| 240 | /* get status */ |
| 241 | temp = inb_p(SMBHSTSTS); |
| 242 | |
| 243 | /* Make sure the SMBus host is ready to start transmitting */ |
| 244 | /* Check the busy bit first */ |
| 245 | if (temp & ALI15X3_STS_BUSY) { |
| 246 | /* |
| 247 | If the host controller is still busy, it may have timed out in the |
| 248 | previous transaction, resulting in a "SMBus Timeout" Dev. |
| 249 | I've tried the following to reset a stuck busy bit. |
| 250 | 1. Reset the controller with an ABORT command. |
| 251 | (this doesn't seem to clear the controller if an external |
| 252 | device is hung) |
| 253 | 2. Reset the controller and the other SMBus devices with a |
| 254 | T_OUT command. (this clears the host busy bit if an |
| 255 | external device is hung, but it comes back upon a new access |
| 256 | to a device) |
| 257 | 3. Disable and reenable the controller in SMBHSTCFG |
| 258 | Worst case, nothing seems to work except power reset. |
| 259 | */ |
| 260 | /* Abort - reset the host controller */ |
| 261 | /* |
| 262 | Try resetting entire SMB bus, including other devices - |
| 263 | This may not work either - it clears the BUSY bit but |
| 264 | then the BUSY bit may come back on when you try and use the chip again. |
| 265 | If that's the case you are stuck. |
| 266 | */ |
| 267 | dev_info(&adap->dev, "Resetting entire SMB Bus to " |
| 268 | "clear busy condition (%02x)\n", temp); |
| 269 | outb_p(ALI15X3_T_OUT, SMBHSTCNT); |
| 270 | temp = inb_p(SMBHSTSTS); |
| 271 | } |
| 272 | |
| 273 | /* now check the error bits and the busy bit */ |
| 274 | if (temp & (ALI15X3_STS_ERR | ALI15X3_STS_BUSY)) { |
| 275 | /* do a clear-on-write */ |
| 276 | outb_p(0xFF, SMBHSTSTS); |
| 277 | if ((temp = inb_p(SMBHSTSTS)) & |
| 278 | (ALI15X3_STS_ERR | ALI15X3_STS_BUSY)) { |
| 279 | /* this is probably going to be correctable only by a power reset |
| 280 | as one of the bits now appears to be stuck */ |
| 281 | /* This may be a bus or device with electrical problems. */ |
| 282 | dev_err(&adap->dev, "SMBus reset failed! (0x%02x) - " |
| 283 | "controller or device on bus is probably hung\n", |
| 284 | temp); |
| 285 | return -1; |
| 286 | } |
| 287 | } else { |
| 288 | /* check and clear done bit */ |
| 289 | if (temp & ALI15X3_STS_DONE) { |
| 290 | outb_p(temp, SMBHSTSTS); |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | /* start the transaction by writing anything to the start register */ |
| 295 | outb_p(0xFF, SMBHSTSTART); |
| 296 | |
| 297 | /* We will always wait for a fraction of a second! */ |
| 298 | timeout = 0; |
| 299 | do { |
| 300 | msleep(1); |
| 301 | temp = inb_p(SMBHSTSTS); |
| 302 | } while ((!(temp & (ALI15X3_STS_ERR | ALI15X3_STS_DONE))) |
| 303 | && (timeout++ < MAX_TIMEOUT)); |
| 304 | |
| 305 | /* If the SMBus is still busy, we give up */ |
| 306 | if (timeout >= MAX_TIMEOUT) { |
| 307 | result = -1; |
| 308 | dev_err(&adap->dev, "SMBus Timeout!\n"); |
| 309 | } |
| 310 | |
| 311 | if (temp & ALI15X3_STS_TERM) { |
| 312 | result = -1; |
| 313 | dev_dbg(&adap->dev, "Error: Failed bus transaction\n"); |
| 314 | } |
| 315 | |
| 316 | /* |
| 317 | Unfortunately the ALI SMB controller maps "no response" and "bus |
| 318 | collision" into a single bit. No reponse is the usual case so don't |
| 319 | do a printk. |
| 320 | This means that bus collisions go unreported. |
| 321 | */ |
| 322 | if (temp & ALI15X3_STS_COLL) { |
| 323 | result = -1; |
| 324 | dev_dbg(&adap->dev, |
| 325 | "Error: no response or bus collision ADD=%02x\n", |
| 326 | inb_p(SMBHSTADD)); |
| 327 | } |
| 328 | |
| 329 | /* haven't ever seen this */ |
| 330 | if (temp & ALI15X3_STS_DEV) { |
| 331 | result = -1; |
| 332 | dev_err(&adap->dev, "Error: device error\n"); |
| 333 | } |
| 334 | dev_dbg(&adap->dev, "Transaction (post): STS=%02x, CNT=%02x, CMD=%02x, " |
| 335 | "ADD=%02x, DAT0=%02x, DAT1=%02x\n", inb_p(SMBHSTSTS), |
| 336 | inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD), |
| 337 | inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1)); |
| 338 | return result; |
| 339 | } |
| 340 | |
| 341 | /* Return -1 on error. */ |
| 342 | static s32 ali15x3_access(struct i2c_adapter * adap, u16 addr, |
| 343 | unsigned short flags, char read_write, u8 command, |
| 344 | int size, union i2c_smbus_data * data) |
| 345 | { |
| 346 | int i, len; |
| 347 | int temp; |
| 348 | int timeout; |
| 349 | |
| 350 | /* clear all the bits (clear-on-write) */ |
| 351 | outb_p(0xFF, SMBHSTSTS); |
| 352 | /* make sure SMBus is idle */ |
| 353 | temp = inb_p(SMBHSTSTS); |
| 354 | for (timeout = 0; |
| 355 | (timeout < MAX_TIMEOUT) && !(temp & ALI15X3_STS_IDLE); |
| 356 | timeout++) { |
| 357 | msleep(1); |
| 358 | temp = inb_p(SMBHSTSTS); |
| 359 | } |
| 360 | if (timeout >= MAX_TIMEOUT) { |
| 361 | dev_err(&adap->dev, "Idle wait Timeout! STS=0x%02x\n", temp); |
| 362 | } |
| 363 | |
| 364 | switch (size) { |
| 365 | case I2C_SMBUS_PROC_CALL: |
| 366 | dev_err(&adap->dev, "I2C_SMBUS_PROC_CALL not supported!\n"); |
| 367 | return -1; |
| 368 | case I2C_SMBUS_QUICK: |
| 369 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 370 | SMBHSTADD); |
| 371 | size = ALI15X3_QUICK; |
| 372 | break; |
| 373 | case I2C_SMBUS_BYTE: |
| 374 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 375 | SMBHSTADD); |
| 376 | if (read_write == I2C_SMBUS_WRITE) |
| 377 | outb_p(command, SMBHSTCMD); |
| 378 | size = ALI15X3_BYTE; |
| 379 | break; |
| 380 | case I2C_SMBUS_BYTE_DATA: |
| 381 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 382 | SMBHSTADD); |
| 383 | outb_p(command, SMBHSTCMD); |
| 384 | if (read_write == I2C_SMBUS_WRITE) |
| 385 | outb_p(data->byte, SMBHSTDAT0); |
| 386 | size = ALI15X3_BYTE_DATA; |
| 387 | break; |
| 388 | case I2C_SMBUS_WORD_DATA: |
| 389 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 390 | SMBHSTADD); |
| 391 | outb_p(command, SMBHSTCMD); |
| 392 | if (read_write == I2C_SMBUS_WRITE) { |
| 393 | outb_p(data->word & 0xff, SMBHSTDAT0); |
| 394 | outb_p((data->word & 0xff00) >> 8, SMBHSTDAT1); |
| 395 | } |
| 396 | size = ALI15X3_WORD_DATA; |
| 397 | break; |
| 398 | case I2C_SMBUS_BLOCK_DATA: |
| 399 | outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 400 | SMBHSTADD); |
| 401 | outb_p(command, SMBHSTCMD); |
| 402 | if (read_write == I2C_SMBUS_WRITE) { |
| 403 | len = data->block[0]; |
| 404 | if (len < 0) { |
| 405 | len = 0; |
| 406 | data->block[0] = len; |
| 407 | } |
| 408 | if (len > 32) { |
| 409 | len = 32; |
| 410 | data->block[0] = len; |
| 411 | } |
| 412 | outb_p(len, SMBHSTDAT0); |
| 413 | /* Reset SMBBLKDAT */ |
| 414 | outb_p(inb_p(SMBHSTCNT) | ALI15X3_BLOCK_CLR, SMBHSTCNT); |
| 415 | for (i = 1; i <= len; i++) |
| 416 | outb_p(data->block[i], SMBBLKDAT); |
| 417 | } |
| 418 | size = ALI15X3_BLOCK_DATA; |
| 419 | break; |
| 420 | } |
| 421 | |
| 422 | outb_p(size, SMBHSTCNT); /* output command */ |
| 423 | |
| 424 | if (ali15x3_transaction(adap)) /* Error in transaction */ |
| 425 | return -1; |
| 426 | |
| 427 | if ((read_write == I2C_SMBUS_WRITE) || (size == ALI15X3_QUICK)) |
| 428 | return 0; |
| 429 | |
| 430 | |
| 431 | switch (size) { |
| 432 | case ALI15X3_BYTE: /* Result put in SMBHSTDAT0 */ |
| 433 | data->byte = inb_p(SMBHSTDAT0); |
| 434 | break; |
| 435 | case ALI15X3_BYTE_DATA: |
| 436 | data->byte = inb_p(SMBHSTDAT0); |
| 437 | break; |
| 438 | case ALI15X3_WORD_DATA: |
| 439 | data->word = inb_p(SMBHSTDAT0) + (inb_p(SMBHSTDAT1) << 8); |
| 440 | break; |
| 441 | case ALI15X3_BLOCK_DATA: |
| 442 | len = inb_p(SMBHSTDAT0); |
| 443 | if (len > 32) |
| 444 | len = 32; |
| 445 | data->block[0] = len; |
| 446 | /* Reset SMBBLKDAT */ |
| 447 | outb_p(inb_p(SMBHSTCNT) | ALI15X3_BLOCK_CLR, SMBHSTCNT); |
| 448 | for (i = 1; i <= data->block[0]; i++) { |
| 449 | data->block[i] = inb_p(SMBBLKDAT); |
| 450 | dev_dbg(&adap->dev, "Blk: len=%d, i=%d, data=%02x\n", |
| 451 | len, i, data->block[i]); |
| 452 | } |
| 453 | break; |
| 454 | } |
| 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | static u32 ali15x3_func(struct i2c_adapter *adapter) |
| 459 | { |
| 460 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | |
| 461 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | |
| 462 | I2C_FUNC_SMBUS_BLOCK_DATA; |
| 463 | } |
| 464 | |
Jean Delvare | 8f9082c | 2006-09-03 22:39:46 +0200 | [diff] [blame] | 465 | static const struct i2c_algorithm smbus_algorithm = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | .smbus_xfer = ali15x3_access, |
| 467 | .functionality = ali15x3_func, |
| 468 | }; |
| 469 | |
| 470 | static struct i2c_adapter ali15x3_adapter = { |
| 471 | .owner = THIS_MODULE, |
Stephen Hemminger | 9ace555 | 2007-02-13 22:09:01 +0100 | [diff] [blame] | 472 | .id = I2C_HW_SMBUS_ALI15X3, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | .class = I2C_CLASS_HWMON, |
| 474 | .algo = &smbus_algorithm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | }; |
| 476 | |
| 477 | static struct pci_device_id ali15x3_ids[] = { |
| 478 | { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) }, |
| 479 | { 0, } |
| 480 | }; |
| 481 | |
| 482 | MODULE_DEVICE_TABLE (pci, ali15x3_ids); |
| 483 | |
| 484 | static int __devinit ali15x3_probe(struct pci_dev *dev, const struct pci_device_id *id) |
| 485 | { |
| 486 | if (ali15x3_setup(dev)) { |
| 487 | dev_err(&dev->dev, |
| 488 | "ALI15X3 not detected, module not inserted.\n"); |
| 489 | return -ENODEV; |
| 490 | } |
| 491 | |
| 492 | /* set up the driverfs linkage to our parent device */ |
| 493 | ali15x3_adapter.dev.parent = &dev->dev; |
| 494 | |
| 495 | snprintf(ali15x3_adapter.name, I2C_NAME_SIZE, |
| 496 | "SMBus ALI15X3 adapter at %04x", ali15x3_smba); |
| 497 | return i2c_add_adapter(&ali15x3_adapter); |
| 498 | } |
| 499 | |
| 500 | static void __devexit ali15x3_remove(struct pci_dev *dev) |
| 501 | { |
| 502 | i2c_del_adapter(&ali15x3_adapter); |
| 503 | release_region(ali15x3_smba, ALI15X3_SMB_IOSIZE); |
| 504 | } |
| 505 | |
| 506 | static struct pci_driver ali15x3_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | .name = "ali15x3_smbus", |
| 508 | .id_table = ali15x3_ids, |
| 509 | .probe = ali15x3_probe, |
| 510 | .remove = __devexit_p(ali15x3_remove), |
| 511 | }; |
| 512 | |
| 513 | static int __init i2c_ali15x3_init(void) |
| 514 | { |
| 515 | return pci_register_driver(&ali15x3_driver); |
| 516 | } |
| 517 | |
| 518 | static void __exit i2c_ali15x3_exit(void) |
| 519 | { |
| 520 | pci_unregister_driver(&ali15x3_driver); |
| 521 | } |
| 522 | |
| 523 | MODULE_AUTHOR ("Frodo Looijaard <frodol@dds.nl>, " |
| 524 | "Philip Edelbrock <phil@netroedge.com>, " |
| 525 | "and Mark D. Studebaker <mdsxyz123@yahoo.com>"); |
| 526 | MODULE_DESCRIPTION("ALI15X3 SMBus driver"); |
| 527 | MODULE_LICENSE("GPL"); |
| 528 | |
| 529 | module_init(i2c_ali15x3_init); |
| 530 | module_exit(i2c_ali15x3_exit); |