Re: [Patch v2] driver/i2c/mux: Add register based mux i2c-mux-reg

[York Sun <yorksun@freescale.com>]

On 06/18/2015 05:35 AM, Alexander Sverdlin wrote:
> Hello!
> 
> On 17/06/15 23:13, ext York Sun wrote:
>> +	switch (mux->data.reg_size) {
>> +	case 4:
>> +		iowrite32(mux->data.values[chan], mux->data.reg);
>> +		break;
>> +	case 2:
>> +		iowrite16(mux->data.values[chan], mux->data.reg);
>> +		break;
>> +	case 1:
>> +		iowrite8(mux->data.values[chan], mux->data.reg);
>> +		break;
> 
> I'd like to see at least [optional] read-back operation after each write.

Maybe I should add ioread after each write without using an option. I want to
avoid additional option if possible.

> And if you stick with iowrite*(), maybe it desires a comment (in the Documentation/ file?),
> that write will be little-Endian, therefore BE users must take care...

I am consulting with my colleagues. If I cannot come up with a native endianess
solution, I will keep using iowrite and add a comment.

> 
> Other than that it looks good to me...
> 

Thanks.

York