Re: [linux-nfc] [PATCH 3/8] NFC: NCI: Adds NCI init and reset API for drivers

[Robert Dolca]

On Thu, Mar 26, 2015 at 2:29 AM, Samuel Ortiz <sameo@xxxxxxxxxxxxxxx> wrote:
> Hi Robert,
>
> On Tue, Feb 24, 2015 at 12:01:47PM +0200, Robert Dolca wrote:
>> In order to communicate with the device during the setup
>> phase, the driver may need to initialize the device. After
>> the setup is done the driver should reset the device to leave
>> it in the same state that it was before the setup function
>> call.
> I would prefer not to export those symbols, but instead introduce a
> quirk bitmap to let the NCI core know that your device expects the core
> to be initialized before calling the setup ops.
> That would be done from nci_open_device().

As part of the initialization / firmware upgrade procedure the driver
needs to reset and initialize the NCI connection multiple times.
Having the connection initialized before calling setup is not enough.

Regards,
Robert
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