Re: NXP NFC version and ACPI

From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: sedat.dilek@gmail.com
Cc: Samuel Ortiz <sameo@linux.intel.com>,
	linux-wireless@vger.kernel.org, linux-nfc@lists.01.org,
	robert.dolca@intel.com, oleg.zhurakivskyy@intel.com,
	clement.perrochaud@effinnov.com, charles.gorand@effinnov.com,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: Re: NXP NFC version and ACPI
Date: Tue, 14 May 2019 08:42:57 +0200	[thread overview]
Message-ID: <5ae87449-83a1-ecce-c72c-b4742c507497@linaro.org> (raw)
In-Reply-To: <CA+icZUVz7sB6hv4fhL_rqhR_D8RePBJFXk1PaUy5tMw2z4xC_Q@mail.gmail.com>

On 13/05/2019 22:15, Sedat Dilek wrote:
> On Wed, Dec 5, 2018 at 8:38 AM Daniel Lezcano <daniel.lezcano@linaro.org> wrote:
>>
>>
>> Hi,
>>
>> the discussion reference is on github [1].
>>
>> I acquired a Lenovo x280 with a NFC chip. It is unclear what chip is it
>> really, it is called NXP NPC300 which could be a PN7xxx chip range.
>>
>> A hacked version of an old deprecated out-of-tree module made the PN5xxx
>> to work with my laptop but I suspect it brought some subtle instability
>> on my system.
>>
>> Now it would be nice to have this correctly supported upstream.
>>
>> I dumped the ACPI DSDT table and got the id NXP1001. This one is not
>> listed in the match table of the nxp-nci driver.
>>
>>  - is the driver missing for the so called NXP NPC300 ?
>>  - should the NXP1001 matching string to be added to nxp-nci?
>>  - is my firmware sending me garbage ?
>>
>> Thanks in advance for any input
>>
> 
> [ CC Andy ]
> 
> Hi Daniel,
> 
> I was able to get a NXP NPC300 NFC device run on Lenovo ThinkPad T470.
> 
> Look at the patchset "[PATCH v2 00/12] NFC: nxp-nci: clean up and
> support new ID".
> I have tested on top of Linux v5.1.1.

Hi Sedat,

yes, I have them see. Thanks for letting me know.

> Here I have set...
> 
> scripts/config -m NFC_NCI -m NFC_NXP_NCI -m NFC_NXP_NCI_I2C -e
> PINCTRL_SUNRISEPOINT
> 
> Please give this a try and report.

My laptop is the first one I have with a NFC reader, so I'm not used to
test this as it was not working yet.

I booted the machine with a 5.1.1, the series applied on top, and the
config options set as mentioned above.

The nxp-nci kernel module is loaded and neard is installed.

I used the sniffing tool with the command libnfc -d nfc0 -n but when
passing my NFC devices on the laptop's NFC mark, nothing happens.

Is that correct?

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