I2c-cpm drievr not working

[Bhushan Bharat-R65777]

> -----Original Message-----
> From: linuxppc-dev-bounces+bharat.bhushan=freescale.com at lists.ozlabs.org
> [mailto:linuxppc-dev-
> bounces+bharat.bhushan=freescale.com at lists.ozlabs.org] On Behalf Of
> smitha.vanga at wipro.com
> Sent: Friday, October 14, 2011 9:45 AM
> To: Wood Scott-B07421
> Cc: linuxppc-dev at lists.ozlabs.org
> Subject: I2c-cpm drievr not working
> 
> 
> Hi Scott,
> 
> I am using the i2c-cpm driver to read and write to a LM75 sensor. The int
> i2c_master_send(struct i2c_client *client,const char *buf ,int count)
> function is not successful.
> Could you let me know what may be the issue. Below are the traces.
> 
> DS75_DRIVER : Open
> DS75_DRIVER : Device Open Successful!
> DS75_DRIVER  : ioctl TEMP_READ cmd 1
> In i2c_master_send enter-------
> In i2c_master_send enter [2]-------
> In i2c_master_send msg.addr=c031
> In i2c_master_send 1 client->addr =0
> In i2c_master_send 2
> In i2c_master_send 3
> In i2c_master_send 4
> --- enter i2c_transfer

I am a bit confused that i2c_transfer() is called after i2c_master_send is entered 4 times. Should not this be called every time ?

> i2c_transfer_entry
> *********** cpm_i2c_xfer
> ***********cpm_i2c_parse_message
> ***********cpm_i2c_check_message
> *********** else
>  rv =1
> In i2c_master_send 5
>  i2c_master_recv client.addr=0
> --- enter i2c_transfer

This time it is called on first shot.

Do you think you need to define I2C_CHIP_ERRATA ?

Thanks
-Bharat

> i2c_transfer_entry
> *********** cpm_i2c_xfer
> ***********cpm_i2c_parse_message
> i2c_adapter i2c-0: I2C transfer: timeout
> *********** cpm_i2c_xfer out_err
> ***********cpm_i2c_force_close
>  rv =ffffff87
> DS75_DRIVER  : Error reading from I2C
> 
> Regards,
> Smitha
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