We will port w83792d.c to linux-2.6

Huang0 at Winbond.com.tw Huang0 at Winbond.com.tw
Sun Feb 6 03:28:33 CET 2005


Hi Jean, MDS

I have two questions about W83792D driver:
(1) When I write the 792 driver for linux-2.4, I find that there is
  such member "struct i2c_client *lm75" in struct w83781d_data.
  I'm not familiar with it, I delete it and all the related codes
  in 792 driver, it seems 792 driver for 2.4 can work well.
  Now when I refer to the w83781d.c for linux-2.6, I see it again.
  Could you give me some introduction about it? Can I delete it and
  the function "w83781d_detect_subclients()"?

(2) In my 792 driver for inux-2.4, the measured "temp" value is
  always wrong. I usually get the value ""




> -----Original Message-----
> From: Jean Delvare [mailto:khali at linux-fr.org]
> Sent: 2005Äê2ÔÂ4ÈÕ 19:55
> To: PI14 HUANG0
> Cc: PI10 LHHsu; PI14 DZSHEN; LM Sensors
> Subject: RE: We will port w83792d.c to linux-2.6
> 
> 
> Hi Chunhao,
> 
> > Provided that I have successfully ported w83792d.c from linux-2.4 to 2.6,
> > How should I add it into the linux kernel tree linux-2.6.10 for test?
> > I have tried the following steps:
> > (1)Add a file w83792d.c into the directory
> >   /usr/src/linux-2.6.10/drivers/i2c/chips/
> 
> Correct.
> 
> > (2) modify /usr/src/linux-2.6.10/drivers/i2c/chips/Makefile (add 792 part)
> 
> Correct again.
> 
> > (3) modify /usr/src/linux-2.6.10/.config (add 792 part)
> 
> Not correct. You need to edit
> /usr/src/linux-2.6.10/drivers/i2c/chips/Kconfig, where you'd add a
> section for the w83792d driver, just copy, paste and edit from another
> chip's section.
> 
> Once done, use "make oldconfig" or "make menuconfig" to enable the
> new driver, preferably as a module. You can edit .config manually but
> that's definitely not the easiest way!
> 
> > Btw, the Documentation/i2c/writing-clients in linux-2.6.10 and
> > linux-2.6.11-rc3 is NOT for linux-2.6, but for linux-2.4. You need to
> > update it.
> 
> You are right, this file is severly outdated, and would need an update.
> Probably not everything needs to be, the overall structure of the
> document seems correct, the major change would be to remove all
> references to procfs and replace with sysfs info. Feel free to propose a
> corrective patch for that file!
> 
> Thanks,
> --
> Jean Delvare

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