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2013/3/27 Christian Gmeiner <christian.gmeiner@xxxxxxxxx>:
> 2013/1/24 Wolfram Sang <w.sang@xxxxxxxxxxxxxx>:
>> On Wed, Dec 19, 2012 at 05:07:09PM +0100, Christian Gmeiner wrote:
>>> I have a at24 EEPROM connected via i2c bus provided by ISCH i2c
>>> bus driver. This bus driver does not support
>>> I2C_FUNC_SMBUS_WRITE_I2C_BLOCK and so I was looking for a way
>>> to be able to write the eeprom. This patch adds support for
>>> I2C_SMBUS_BYTE_DATA writing via i2c_smbus_write_byte_data.
>>> It is quite slow, but it works.
>>>
>>> Signed-off-by: Christian Gmeiner <christian.gmeiner@xxxxxxxxx>
>>> ---
>>> drivers/misc/eeprom/at24.c | 35 +++++++++++++++++++++++++++++------
>>> 1 file changed, 29 insertions(+), 6 deletions(-)
>>>
>>> diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
>>> index 2baeec5..723b411 100644
>>> --- a/drivers/misc/eeprom/at24.c
>>> +++ b/drivers/misc/eeprom/at24.c
>>> @@ -56,6 +56,7 @@ struct at24_data {
>>> struct at24_platform_data chip;
>>> struct memory_accessor macc;
>>> int use_smbus;
>>> + int use_smbuse_write;
>>
>> Can't you use the same 'use_smbus' variable and do a similar switch-case
>> as in the read function?
>>
>
> Sorry for the really late answer.
>
> I am not sure if there exits some i2c buses which have different
> access methods for read and write.
> E.g. I2C_FUNC_SMBUS_WRITE_I2C_BLOCK and I2C_FUNC_SMBUS_READ_BYTE_DATA
>
> If there will never be such a combination then I can reuse the same
> 'use_smbus' variable.
>
--
Christian Gmeiner, MSc
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