i2c-viapro 2.0 KB

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  1. Kernel driver i2c-viapro
  2. Supported adapters:
  3. * VIA Technologies, Inc. VT82C596A/B
  4. Datasheet: Sometimes available at the VIA website
  5. * VIA Technologies, Inc. VT82C686A/B
  6. Datasheet: Sometimes available at the VIA website
  7. * VIA Technologies, Inc. VT8231, VT8233, VT8233A
  8. Datasheet: available on request from VIA
  9. * VIA Technologies, Inc. VT8235, VT8237R, VT8237A, VT8237S, VT8251
  10. Datasheet: available on request and under NDA from VIA
  11. * VIA Technologies, Inc. CX700
  12. Datasheet: available on request and under NDA from VIA
  13. * VIA Technologies, Inc. VX800/VX820
  14. Datasheet: available on http://linux.via.com.tw
  15. * VIA Technologies, Inc. VX855/VX875
  16. Datasheet: Availability unknown
  17. Authors:
  18. Kyösti Mälkki <kmalkki@cc.hut.fi>,
  19. Mark D. Studebaker <mdsxyz123@yahoo.com>,
  20. Jean Delvare <khali@linux-fr.org>
  21. Module Parameters
  22. -----------------
  23. * force: int
  24. Forcibly enable the SMBus controller. DANGEROUS!
  25. * force_addr: int
  26. Forcibly enable the SMBus at the given address. EXTREMELY DANGEROUS!
  27. Description
  28. -----------
  29. i2c-viapro is a true SMBus host driver for motherboards with one of the
  30. supported VIA south bridges.
  31. Your lspci -n listing must show one of these :
  32. device 1106:3050 (VT82C596A function 3)
  33. device 1106:3051 (VT82C596B function 3)
  34. device 1106:3057 (VT82C686 function 4)
  35. device 1106:3074 (VT8233)
  36. device 1106:3147 (VT8233A)
  37. device 1106:8235 (VT8231 function 4)
  38. device 1106:3177 (VT8235)
  39. device 1106:3227 (VT8237R)
  40. device 1106:3337 (VT8237A)
  41. device 1106:3372 (VT8237S)
  42. device 1106:3287 (VT8251)
  43. device 1106:8324 (CX700)
  44. device 1106:8353 (VX800/VX820)
  45. device 1106:8409 (VX855/VX875)
  46. If none of these show up, you should look in the BIOS for settings like
  47. enable ACPI / SMBus or even USB.
  48. Except for the oldest chips (VT82C596A/B, VT82C686A and most probably
  49. VT8231), this driver supports I2C block transactions. Such transactions
  50. are mainly useful to read from and write to EEPROMs.
  51. The CX700/VX800/VX820 additionally appears to support SMBus PEC, although
  52. this driver doesn't implement it yet.