Re: [PATCH RFC] i2c algo, Add i2c-algo-i801 driver [v1]

[Prarit Bhargava <prarit@redhat.com>]

On 04/10/2014 04:26 PM, Matthew Garrett wrote:
> On Thu, 2014-04-10 at 15:15 -0400, Prarit Bhargava wrote:
>>
>> On 04/09/2014 01:09 PM, Matthew Garrett wrote:
>>> Not really. These are an internal implementation detail, not an exported
>>> interface. We try to write drivers for exported interfaces, even if
>>> they're not documented.
>>
>> Aren't the methods the exported interface?  I'm obviously missing something :)
> 
> No. The device doesn't have a _HID(), so they're internal methods.
> 
>>> Imagine an i2c chip with indexed register access. What stops:
>>>

I think I missed something in this example (and if I have this wrong, please say
so).

Are you saying *both* the old (pci-style) driver and my new driver (ACPI) are
loaded?  Or something else?

>
>>> CPU0 (i2c):		CPU1 (ACPI):
>>> SBWB register address
>>> 			SBWB register address
>>> SBRB register value
>>> 			SBRB register value
>>>
>>> and CPU0 getting back the wrong value?

P.