linux-kernel - Re: [PATCHv2] serial: 8250: Add Quark X1000 to 8250 PCI driver

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Message-ID: <541C14E7.8020208@nexus-software.ie>
Date:	Fri, 19 Sep 2014 12:35:03 +0100
From:	Bryan O'Donoghue <pure.logic@...us-software.ie>
To:	Heikki Krogerus <heikki.krogerus@...ux.intel.com>
CC:	gregkh@...uxfoundation.org, jslaby@...e.cz,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
	"Chew, Kean Ho" <kean.ho.chew@...el.com>
Subject: Re: [PATCHv2] serial: 8250: Add Quark X1000 to 8250 PCI driver

On 19/09/14 11:58, Heikki Krogerus wrote:
> On Fri, Sep 19, 2014 at 08:43:49AM +0100, Bryan O'Donoghue wrote:
>> Adds PCI identifier for the X1000
>> Adds clocking and register size and register shift
>>
>> Signed-off-by: Bryan O'Donoghue <pure.logic@...us-software.ie>
>> ---
>>   drivers/tty/serial/8250/8250_pci.c | 33 +++++++++++++++++++++++++++++++++
>>   1 file changed, 33 insertions(+)
>
> The UART on Quark SoC has an integrated DMA engine and Kean Ho (CC'd)
> is working with support for it. The plan is to add completely separate
> probe driver for the Quark UART. Dealing with the integrated DMA
> engine is too much for a quirk in 8250_pci.c.
>
> So we can take this now and when Kean Ho is ready he needs to
> basically revert it, or you could already introduce the new probe
> driver, 8250_quark.c, and Kean Ho can then add the DMA engine handling
> later to it.
>
> IMO we should add the 8250_quark.c already now.

Sounds great - is the 8250_quark.c code ready ?

If so then fantastic I agree with you.

If not then, lets do as you suggest Heikki and apply the simple patch 
above in the interim.


Best,
BOD


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