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From: Samuel Ortiz <sameo@linux.intel.com>
To: Robert Dolca <robert.dolca@gmail.com>
Cc: Robert Dolca <robert.dolca@intel.com>,
	linux-nfc@ml01.01.org, netdev@vger.kernel.org,
	linux-wireless@vger.kernel.org,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"David S. Miller" <davem@davemloft.net>
Subject: Re: [linux-nfc] [PATCH 3/8] NFC: NCI: Adds NCI init and reset API for drivers
Date: Sun, 24 May 2015 19:07:58 +0200	[thread overview]
Message-ID: <20150524170758.GC15886@ribalta.ccr.corp.intel.com> (raw)
In-Reply-To: <CAFPB+YcvZReLRsv5dYh=jTwASa1vo-0pK5T1AS-eGmzO=arDLQ@mail.gmail.com>

Hi Robert,

On Tue, Mar 31, 2015 at 05:05:53PM +0300, Robert Dolca wrote:
> On Thu, Mar 26, 2015 at 2:29 AM, Samuel Ortiz <sameo@linux.intel.com> 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.
Fair enough, I am ok with exporting those symbols.

BTW after looking at your setup routine, I think this is wrong:

+	/* Load firmware from disk */
+	r = fdp_nci_request_firmware(ndev);
+	if (r)
+		goto error;

You should be able to boot your NFC chipset without a local
patch. If there is one, then you can try patching your device, but
otherwise we should continue with the exisiting one.

Cheers,
Samuel.

  reply	other threads:[~2015-05-24 17:08 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-24 10:01 [PATCH 0/8] Adds Intel FieldsPeak NFC solution driver Robert Dolca
2015-02-24 10:01 ` [PATCH 1/8] NFC: NCI: Allow connection close with dev down Robert Dolca
2015-03-26  0:29   ` Samuel Ortiz
2015-03-31 14:03     ` [linux-nfc] " Robert Dolca
2015-05-24 17:07       ` Samuel Ortiz
2015-08-28 14:05         ` Robert Dolca
2015-02-24 10:01 ` [PATCH 2/8] NFC: NCI: Exporting NFC command and data send API Robert Dolca
2015-02-24 10:01 ` [PATCH 3/8] NFC: NCI: Adds NCI init and reset API for drivers Robert Dolca
2015-03-26  0:29   ` Samuel Ortiz
2015-03-31 14:05     ` [linux-nfc] " Robert Dolca
2015-05-24 17:07       ` Samuel Ortiz [this message]
2015-02-24 10:01 ` [PATCH 4/8] NFC: NCI: Add a special nci_request for driver Robert Dolca
2015-03-26  0:29   ` Samuel Ortiz
2015-03-31 14:07     ` [linux-nfc] " Robert Dolca
2015-02-24 10:01 ` [PATCH 5/8] NFC: NCI: Don't call setup if previous NCI request failed Robert Dolca
2015-03-26  0:29   ` Samuel Ortiz
2015-02-24 10:01 ` [PATCH 6/8] NFC: NCI: Add function to get max packet size for conn Robert Dolca
2015-02-24 10:01 ` [PATCH 7/8] NFC: NCI: Adds a way to get the new connection ID Robert Dolca
2015-02-24 10:01 ` [PATCH 8/8] NFC: Add Intel FieldsPeak NFC solution driver Robert Dolca
2015-02-24 10:33   ` Johannes Berg
2015-02-24 10:46     ` Robert Dolca
2015-03-26  0:30   ` Samuel Ortiz
2015-04-01 15:35     ` [linux-nfc] " Robert Dolca
2015-05-24 17:08       ` Samuel Ortiz
2015-03-26 11:20   ` Samuel Ortiz
2015-03-26 13:45   ` Mika Westerberg
2015-02-24 16:14 ` [PATCH 0/8] Adds " Greg Rose
2015-02-24 16:25   ` Daniel Baluta
2015-02-24 16:27     ` Greg Rose

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