Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | Copyright (c) 1999-2002 Merlin Hughes <merlin@merlin.org> |
| 3 | |
| 4 | Shamelessly ripped from i2c-piix4.c: |
| 5 | |
| 6 | Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl> and |
| 7 | Philip Edelbrock <phil@netroedge.com> |
| 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 | /* |
| 25 | 2002-04-08: Added nForce support. (Csaba Halasz) |
| 26 | 2002-10-03: Fixed nForce PnP I/O port. (Michael Steil) |
| 27 | 2002-12-28: Rewritten into something that resembles a Linux driver (hch) |
| 28 | 2003-11-29: Added back AMD8111 removed by the previous rewrite. |
| 29 | (Philip Pokorny) |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | Supports AMD756, AMD766, AMD768, AMD8111 and nVidia nForce |
| 34 | Note: we assume there can only be one device, with one SMBus interface. |
| 35 | */ |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/module.h> |
| 38 | #include <linux/pci.h> |
| 39 | #include <linux/kernel.h> |
| 40 | #include <linux/delay.h> |
| 41 | #include <linux/stddef.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/ioport.h> |
| 43 | #include <linux/i2c.h> |
| 44 | #include <linux/init.h> |
Jean Delvare | 54fb4a05 | 2008-07-14 22:38:33 +0200 | [diff] [blame] | 45 | #include <linux/acpi.h> |
H Hartley Sweeten | 2178218 | 2010-05-21 18:41:01 +0200 | [diff] [blame] | 46 | #include <linux/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | /* AMD756 SMBus address offsets */ |
| 49 | #define SMB_ADDR_OFFSET 0xE0 |
| 50 | #define SMB_IOSIZE 16 |
| 51 | #define SMB_GLOBAL_STATUS (0x0 + amd756_ioport) |
| 52 | #define SMB_GLOBAL_ENABLE (0x2 + amd756_ioport) |
| 53 | #define SMB_HOST_ADDRESS (0x4 + amd756_ioport) |
| 54 | #define SMB_HOST_DATA (0x6 + amd756_ioport) |
| 55 | #define SMB_HOST_COMMAND (0x8 + amd756_ioport) |
| 56 | #define SMB_HOST_BLOCK_DATA (0x9 + amd756_ioport) |
| 57 | #define SMB_HAS_DATA (0xA + amd756_ioport) |
| 58 | #define SMB_HAS_DEVICE_ADDRESS (0xC + amd756_ioport) |
| 59 | #define SMB_HAS_HOST_ADDRESS (0xE + amd756_ioport) |
| 60 | #define SMB_SNOOP_ADDRESS (0xF + amd756_ioport) |
| 61 | |
| 62 | /* PCI Address Constants */ |
| 63 | |
| 64 | /* address of I/O space */ |
| 65 | #define SMBBA 0x058 /* mh */ |
| 66 | #define SMBBANFORCE 0x014 |
| 67 | |
| 68 | /* general configuration */ |
| 69 | #define SMBGCFG 0x041 /* mh */ |
| 70 | |
| 71 | /* silicon revision code */ |
| 72 | #define SMBREV 0x008 |
| 73 | |
| 74 | /* Other settings */ |
| 75 | #define MAX_TIMEOUT 500 |
| 76 | |
| 77 | /* AMD756 constants */ |
| 78 | #define AMD756_QUICK 0x00 |
| 79 | #define AMD756_BYTE 0x01 |
| 80 | #define AMD756_BYTE_DATA 0x02 |
| 81 | #define AMD756_WORD_DATA 0x03 |
| 82 | #define AMD756_PROCESS_CALL 0x04 |
| 83 | #define AMD756_BLOCK_DATA 0x05 |
| 84 | |
Jean Delvare | d6072f8 | 2005-09-25 16:37:04 +0200 | [diff] [blame] | 85 | static struct pci_driver amd756_driver; |
Jean Delvare | 6050709 | 2005-09-25 16:23:07 +0200 | [diff] [blame] | 86 | static unsigned short amd756_ioport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
| 88 | /* |
| 89 | SMBUS event = I/O 28-29 bit 11 |
| 90 | see E0 for the status bits and enabled in E2 |
| 91 | |
| 92 | */ |
| 93 | #define GS_ABRT_STS (1 << 0) |
| 94 | #define GS_COL_STS (1 << 1) |
| 95 | #define GS_PRERR_STS (1 << 2) |
| 96 | #define GS_HST_STS (1 << 3) |
| 97 | #define GS_HCYC_STS (1 << 4) |
| 98 | #define GS_TO_STS (1 << 5) |
| 99 | #define GS_SMB_STS (1 << 11) |
| 100 | |
| 101 | #define GS_CLEAR_STS (GS_ABRT_STS | GS_COL_STS | GS_PRERR_STS | \ |
| 102 | GS_HCYC_STS | GS_TO_STS ) |
| 103 | |
| 104 | #define GE_CYC_TYPE_MASK (7) |
| 105 | #define GE_HOST_STC (1 << 3) |
| 106 | #define GE_ABORT (1 << 5) |
| 107 | |
| 108 | |
| 109 | static int amd756_transaction(struct i2c_adapter *adap) |
| 110 | { |
| 111 | int temp; |
| 112 | int result = 0; |
| 113 | int timeout = 0; |
| 114 | |
| 115 | dev_dbg(&adap->dev, "Transaction (pre): GS=%04x, GE=%04x, ADD=%04x, " |
| 116 | "DAT=%04x\n", inw_p(SMB_GLOBAL_STATUS), |
| 117 | inw_p(SMB_GLOBAL_ENABLE), inw_p(SMB_HOST_ADDRESS), |
| 118 | inb_p(SMB_HOST_DATA)); |
| 119 | |
| 120 | /* Make sure the SMBus host is ready to start transmitting */ |
| 121 | if ((temp = inw_p(SMB_GLOBAL_STATUS)) & (GS_HST_STS | GS_SMB_STS)) { |
| 122 | dev_dbg(&adap->dev, "SMBus busy (%04x). Waiting...\n", temp); |
| 123 | do { |
| 124 | msleep(1); |
| 125 | temp = inw_p(SMB_GLOBAL_STATUS); |
| 126 | } while ((temp & (GS_HST_STS | GS_SMB_STS)) && |
| 127 | (timeout++ < MAX_TIMEOUT)); |
| 128 | /* If the SMBus is still busy, we give up */ |
Roel Kluin | 4ccc28f | 2009-05-05 08:39:24 +0200 | [diff] [blame] | 129 | if (timeout > MAX_TIMEOUT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | dev_dbg(&adap->dev, "Busy wait timeout (%04x)\n", temp); |
| 131 | goto abort; |
| 132 | } |
| 133 | timeout = 0; |
| 134 | } |
| 135 | |
| 136 | /* start the transaction by setting the start bit */ |
| 137 | outw_p(inw(SMB_GLOBAL_ENABLE) | GE_HOST_STC, SMB_GLOBAL_ENABLE); |
| 138 | |
| 139 | /* We will always wait for a fraction of a second! */ |
| 140 | do { |
| 141 | msleep(1); |
| 142 | temp = inw_p(SMB_GLOBAL_STATUS); |
| 143 | } while ((temp & GS_HST_STS) && (timeout++ < MAX_TIMEOUT)); |
| 144 | |
| 145 | /* If the SMBus is still busy, we give up */ |
Roel Kluin | 4ccc28f | 2009-05-05 08:39:24 +0200 | [diff] [blame] | 146 | if (timeout > MAX_TIMEOUT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | dev_dbg(&adap->dev, "Completion timeout!\n"); |
| 148 | goto abort; |
| 149 | } |
| 150 | |
| 151 | if (temp & GS_PRERR_STS) { |
David Brownell | 9714034 | 2008-07-14 22:38:25 +0200 | [diff] [blame] | 152 | result = -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | dev_dbg(&adap->dev, "SMBus Protocol error (no response)!\n"); |
| 154 | } |
| 155 | |
| 156 | if (temp & GS_COL_STS) { |
David Brownell | 9714034 | 2008-07-14 22:38:25 +0200 | [diff] [blame] | 157 | result = -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | dev_warn(&adap->dev, "SMBus collision!\n"); |
| 159 | } |
| 160 | |
| 161 | if (temp & GS_TO_STS) { |
David Brownell | 9714034 | 2008-07-14 22:38:25 +0200 | [diff] [blame] | 162 | result = -ETIMEDOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | dev_dbg(&adap->dev, "SMBus protocol timeout!\n"); |
| 164 | } |
| 165 | |
| 166 | if (temp & GS_HCYC_STS) |
| 167 | dev_dbg(&adap->dev, "SMBus protocol success!\n"); |
| 168 | |
| 169 | outw_p(GS_CLEAR_STS, SMB_GLOBAL_STATUS); |
| 170 | |
| 171 | #ifdef DEBUG |
| 172 | if (((temp = inw_p(SMB_GLOBAL_STATUS)) & GS_CLEAR_STS) != 0x00) { |
| 173 | dev_dbg(&adap->dev, |
| 174 | "Failed reset at end of transaction (%04x)\n", temp); |
| 175 | } |
| 176 | #endif |
| 177 | |
| 178 | dev_dbg(&adap->dev, |
| 179 | "Transaction (post): GS=%04x, GE=%04x, ADD=%04x, DAT=%04x\n", |
| 180 | inw_p(SMB_GLOBAL_STATUS), inw_p(SMB_GLOBAL_ENABLE), |
| 181 | inw_p(SMB_HOST_ADDRESS), inb_p(SMB_HOST_DATA)); |
| 182 | |
| 183 | return result; |
| 184 | |
| 185 | abort: |
| 186 | dev_warn(&adap->dev, "Sending abort\n"); |
| 187 | outw_p(inw(SMB_GLOBAL_ENABLE) | GE_ABORT, SMB_GLOBAL_ENABLE); |
| 188 | msleep(100); |
| 189 | outw_p(GS_CLEAR_STS, SMB_GLOBAL_STATUS); |
David Brownell | 9714034 | 2008-07-14 22:38:25 +0200 | [diff] [blame] | 190 | return -EIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | } |
| 192 | |
David Brownell | 9714034 | 2008-07-14 22:38:25 +0200 | [diff] [blame] | 193 | /* Return negative errno on error. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | static s32 amd756_access(struct i2c_adapter * adap, u16 addr, |
| 195 | unsigned short flags, char read_write, |
| 196 | u8 command, int size, union i2c_smbus_data * data) |
| 197 | { |
| 198 | int i, len; |
David Brownell | 9714034 | 2008-07-14 22:38:25 +0200 | [diff] [blame] | 199 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | switch (size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | case I2C_SMBUS_QUICK: |
| 203 | outw_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 204 | SMB_HOST_ADDRESS); |
| 205 | size = AMD756_QUICK; |
| 206 | break; |
| 207 | case I2C_SMBUS_BYTE: |
| 208 | outw_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 209 | SMB_HOST_ADDRESS); |
| 210 | if (read_write == I2C_SMBUS_WRITE) |
| 211 | outb_p(command, SMB_HOST_DATA); |
| 212 | size = AMD756_BYTE; |
| 213 | break; |
| 214 | case I2C_SMBUS_BYTE_DATA: |
| 215 | outw_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 216 | SMB_HOST_ADDRESS); |
| 217 | outb_p(command, SMB_HOST_COMMAND); |
| 218 | if (read_write == I2C_SMBUS_WRITE) |
| 219 | outw_p(data->byte, SMB_HOST_DATA); |
| 220 | size = AMD756_BYTE_DATA; |
| 221 | break; |
| 222 | case I2C_SMBUS_WORD_DATA: |
| 223 | outw_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 224 | SMB_HOST_ADDRESS); |
| 225 | outb_p(command, SMB_HOST_COMMAND); |
| 226 | if (read_write == I2C_SMBUS_WRITE) |
| 227 | outw_p(data->word, SMB_HOST_DATA); /* TODO: endian???? */ |
| 228 | size = AMD756_WORD_DATA; |
| 229 | break; |
| 230 | case I2C_SMBUS_BLOCK_DATA: |
| 231 | outw_p(((addr & 0x7f) << 1) | (read_write & 0x01), |
| 232 | SMB_HOST_ADDRESS); |
| 233 | outb_p(command, SMB_HOST_COMMAND); |
| 234 | if (read_write == I2C_SMBUS_WRITE) { |
| 235 | len = data->block[0]; |
| 236 | if (len < 0) |
| 237 | len = 0; |
| 238 | if (len > 32) |
| 239 | len = 32; |
| 240 | outw_p(len, SMB_HOST_DATA); |
| 241 | /* i = inw_p(SMBHSTCNT); Reset SMBBLKDAT */ |
| 242 | for (i = 1; i <= len; i++) |
| 243 | outb_p(data->block[i], |
| 244 | SMB_HOST_BLOCK_DATA); |
| 245 | } |
| 246 | size = AMD756_BLOCK_DATA; |
| 247 | break; |
Jean Delvare | ac7fc4f | 2008-07-14 22:38:25 +0200 | [diff] [blame] | 248 | default: |
| 249 | dev_warn(&adap->dev, "Unsupported transaction %d\n", size); |
| 250 | return -EOPNOTSUPP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | } |
| 252 | |
| 253 | /* How about enabling interrupts... */ |
| 254 | outw_p(size & GE_CYC_TYPE_MASK, SMB_GLOBAL_ENABLE); |
| 255 | |
David Brownell | 9714034 | 2008-07-14 22:38:25 +0200 | [diff] [blame] | 256 | status = amd756_transaction(adap); |
| 257 | if (status) |
| 258 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
| 260 | if ((read_write == I2C_SMBUS_WRITE) || (size == AMD756_QUICK)) |
| 261 | return 0; |
| 262 | |
| 263 | |
| 264 | switch (size) { |
| 265 | case AMD756_BYTE: |
| 266 | data->byte = inw_p(SMB_HOST_DATA); |
| 267 | break; |
| 268 | case AMD756_BYTE_DATA: |
| 269 | data->byte = inw_p(SMB_HOST_DATA); |
| 270 | break; |
| 271 | case AMD756_WORD_DATA: |
| 272 | data->word = inw_p(SMB_HOST_DATA); /* TODO: endian???? */ |
| 273 | break; |
| 274 | case AMD756_BLOCK_DATA: |
| 275 | data->block[0] = inw_p(SMB_HOST_DATA) & 0x3f; |
| 276 | if(data->block[0] > 32) |
| 277 | data->block[0] = 32; |
| 278 | /* i = inw_p(SMBHSTCNT); Reset SMBBLKDAT */ |
| 279 | for (i = 1; i <= data->block[0]; i++) |
| 280 | data->block[i] = inb_p(SMB_HOST_BLOCK_DATA); |
| 281 | break; |
| 282 | } |
| 283 | |
| 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | static u32 amd756_func(struct i2c_adapter *adapter) |
| 288 | { |
| 289 | return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | |
| 290 | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | |
Jean Delvare | 875b0a4 | 2008-05-18 20:49:41 +0200 | [diff] [blame] | 291 | I2C_FUNC_SMBUS_BLOCK_DATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | |
Jean Delvare | 8f9082c | 2006-09-03 22:39:46 +0200 | [diff] [blame] | 294 | static const struct i2c_algorithm smbus_algorithm = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | .smbus_xfer = amd756_access, |
| 296 | .functionality = amd756_func, |
| 297 | }; |
| 298 | |
| 299 | struct i2c_adapter amd756_smbus = { |
| 300 | .owner = THIS_MODULE, |
Jean Delvare | 3401b2f | 2008-07-14 22:38:29 +0200 | [diff] [blame] | 301 | .class = I2C_CLASS_HWMON | I2C_CLASS_SPD, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | .algo = &smbus_algorithm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | }; |
| 304 | |
| 305 | enum chiptype { AMD756, AMD766, AMD768, NFORCE, AMD8111 }; |
| 306 | static const char* chipname[] = { |
| 307 | "AMD756", "AMD766", "AMD768", |
| 308 | "nVidia nForce", "AMD8111", |
| 309 | }; |
| 310 | |
Axel Lin | 3527bd5 | 2012-01-12 20:32:04 +0100 | [diff] [blame] | 311 | static DEFINE_PCI_DEVICE_TABLE(amd756_ids) = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_740B), |
| 313 | .driver_data = AMD756 }, |
| 314 | { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7413), |
| 315 | .driver_data = AMD766 }, |
| 316 | { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_OPUS_7443), |
| 317 | .driver_data = AMD768 }, |
| 318 | { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS), |
| 319 | .driver_data = AMD8111 }, |
| 320 | { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_SMBUS), |
| 321 | .driver_data = NFORCE }, |
| 322 | { 0, } |
| 323 | }; |
| 324 | |
| 325 | MODULE_DEVICE_TABLE (pci, amd756_ids); |
| 326 | |
| 327 | static int __devinit amd756_probe(struct pci_dev *pdev, |
| 328 | const struct pci_device_id *id) |
| 329 | { |
| 330 | int nforce = (id->driver_data == NFORCE); |
| 331 | int error; |
| 332 | u8 temp; |
| 333 | |
| 334 | if (amd756_ioport) { |
| 335 | dev_err(&pdev->dev, "Only one device supported " |
| 336 | "(you have a strange motherboard, btw)\n"); |
| 337 | return -ENODEV; |
| 338 | } |
| 339 | |
| 340 | if (nforce) { |
| 341 | if (PCI_FUNC(pdev->devfn) != 1) |
| 342 | return -ENODEV; |
| 343 | |
| 344 | pci_read_config_word(pdev, SMBBANFORCE, &amd756_ioport); |
| 345 | amd756_ioport &= 0xfffc; |
| 346 | } else { /* amd */ |
| 347 | if (PCI_FUNC(pdev->devfn) != 3) |
| 348 | return -ENODEV; |
| 349 | |
| 350 | pci_read_config_byte(pdev, SMBGCFG, &temp); |
| 351 | if ((temp & 128) == 0) { |
| 352 | dev_err(&pdev->dev, |
| 353 | "Error: SMBus controller I/O not enabled!\n"); |
| 354 | return -ENODEV; |
| 355 | } |
| 356 | |
| 357 | /* Determine the address of the SMBus areas */ |
| 358 | /* Technically it is a dword but... */ |
| 359 | pci_read_config_word(pdev, SMBBA, &amd756_ioport); |
| 360 | amd756_ioport &= 0xff00; |
| 361 | amd756_ioport += SMB_ADDR_OFFSET; |
| 362 | } |
| 363 | |
Jean Delvare | 54fb4a05 | 2008-07-14 22:38:33 +0200 | [diff] [blame] | 364 | error = acpi_check_region(amd756_ioport, SMB_IOSIZE, |
| 365 | amd756_driver.name); |
| 366 | if (error) |
Jean Delvare | 18669ea | 2009-10-04 22:53:45 +0200 | [diff] [blame] | 367 | return -ENODEV; |
Jean Delvare | 54fb4a05 | 2008-07-14 22:38:33 +0200 | [diff] [blame] | 368 | |
Jean Delvare | d6072f8 | 2005-09-25 16:37:04 +0200 | [diff] [blame] | 369 | if (!request_region(amd756_ioport, SMB_IOSIZE, amd756_driver.name)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | dev_err(&pdev->dev, "SMB region 0x%x already in use!\n", |
| 371 | amd756_ioport); |
| 372 | return -ENODEV; |
| 373 | } |
| 374 | |
| 375 | pci_read_config_byte(pdev, SMBREV, &temp); |
| 376 | dev_dbg(&pdev->dev, "SMBREV = 0x%X\n", temp); |
| 377 | dev_dbg(&pdev->dev, "AMD756_smba = 0x%X\n", amd756_ioport); |
| 378 | |
Robert P. J. Day | 405ae7d | 2007-02-17 19:13:42 +0100 | [diff] [blame] | 379 | /* set up the sysfs linkage to our parent device */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | amd756_smbus.dev.parent = &pdev->dev; |
| 381 | |
Jean Delvare | 66c7acf | 2009-01-07 14:29:18 +0100 | [diff] [blame] | 382 | snprintf(amd756_smbus.name, sizeof(amd756_smbus.name), |
| 383 | "SMBus %s adapter at %04x", chipname[id->driver_data], |
| 384 | amd756_ioport); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
| 386 | error = i2c_add_adapter(&amd756_smbus); |
| 387 | if (error) { |
| 388 | dev_err(&pdev->dev, |
| 389 | "Adapter registration failed, module not inserted\n"); |
| 390 | goto out_err; |
| 391 | } |
| 392 | |
| 393 | return 0; |
| 394 | |
| 395 | out_err: |
| 396 | release_region(amd756_ioport, SMB_IOSIZE); |
| 397 | return error; |
| 398 | } |
| 399 | |
| 400 | static void __devexit amd756_remove(struct pci_dev *dev) |
| 401 | { |
| 402 | i2c_del_adapter(&amd756_smbus); |
| 403 | release_region(amd756_ioport, SMB_IOSIZE); |
| 404 | } |
| 405 | |
| 406 | static struct pci_driver amd756_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | .name = "amd756_smbus", |
| 408 | .id_table = amd756_ids, |
| 409 | .probe = amd756_probe, |
| 410 | .remove = __devexit_p(amd756_remove), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | }; |
| 412 | |
Axel Lin | 56f2178 | 2012-07-24 14:13:56 +0200 | [diff] [blame] | 413 | module_pci_driver(amd756_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | |
| 415 | MODULE_AUTHOR("Merlin Hughes <merlin@merlin.org>"); |
| 416 | MODULE_DESCRIPTION("AMD756/766/768/8111 and nVidia nForce SMBus driver"); |
| 417 | MODULE_LICENSE("GPL"); |
| 418 | |
| 419 | EXPORT_SYMBOL(amd756_smbus); |