linux-kernel - Re: [PATCH 3/4] spi: bcm-mspi: Make BCMA optional to support non-BCMA chips

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Message-ID: <CACna6rx6ogbK=0rbmNCOYUyyP2rC+Tb5xpMeb45kcNS8eCRfsw@mail.gmail.com>
Date:	Mon, 6 Apr 2015 12:26:55 +0200
From:	Rafał Miłecki <zajec5@...il.com>
To:	Andy Shevchenko <andy.shevchenko@...il.com>
Cc:	Jonathan Richardson <jonathar@...adcom.com>,
	Mark Brown <broonie@...nel.org>,
	Dmitry Torokhov <dtor@...gle.com>,
	Anatol Pomazau <anatol@...gle.com>,
	Scott Branden <sbranden@...adcom.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-spi <linux-spi@...r.kernel.org>,
	bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
	devicetree <devicetree@...r.kernel.org>
Subject: Re: [PATCH 3/4] spi: bcm-mspi: Make BCMA optional to support non-BCMA chips

On 3 April 2015 at 15:38, Andy Shevchenko <andy.shevchenko@...il.com> wrote:
> On Thu, Apr 2, 2015 at 10:23 PM, Jonathan Richardson
> <jonathar@...adcom.com> wrote:
>> The Broadcom MSPI controller is used on various chips. The driver only
>> supported BCM53xx chips with BCMA (an AMBA bus variant). The driver is
>> refactored to make BCMA optional and provides a new config for non BCMA
>> systems.
>
>>  struct bcm_mspi {
>> +       #ifdef CONFIG_SPI_BCMA_MSPI
>>         struct bcma_device *core;
>> -       struct spi_master *master;
>> +       #endif
>>
>> +       void __iomem *base;
>> +       struct spi_master *master;
>>         size_t read_offset;
>
>> +       void (*mspi_write)(struct bcm_mspi *mspi, u16 offset, u32 value);
>> +       u32 (*mspi_read)(struct bcm_mspi *mspi, u16 offset);
>> +};
>
> To avoid ugly ifdefs I think better to split driver to core part and
> the actual driver part, at the end you will have something like
> mspi-core.c mspi-53xx.c mspi-whatever.c. Check for example spi-dw*.c

I also believe we usually (always?) don't align any #if-s (no indent/tabs).

-- 
Rafał
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