From: Wolfram Sang <w.sang@pengutronix.de>
To: Karol Lewandowski <k.lewandowsk@samsung.com>
Cc: ben-linux@fluff.org, m.szyprowski@samsung.com,
thomas.abraham@linaro.org, linux-kernel@vger.kernel.org,
linux-i2c@vger.kernel.org, devicetree-discuss@lists.ozlabs.org,
linux-samsung-soc@vger.kernel.org, t.stanislaws@samsung.com,
kyungmin.park@samsung.com, broonie@opensource.wolfsonmicro.com,
Grant Likely <grant.likely@secretlab.ca>,
Rob Herring <robherring2@gmail.com>
Subject: Re: [PATCH 2/3] i2c-s3c2410: Rework device type handling
Date: Wed, 18 Apr 2012 15:39:45 +0200 [thread overview]
Message-ID: <20120418133945.GA19220@pengutronix.de> (raw)
In-Reply-To: <4F8EAB94.7080707@samsung.com>
[-- Attachment #1: Type: text/plain, Size: 2237 bytes --]
Hi,
> >> Reorganize driver a bit to better handle device tree-based systems:
> >>
> >> - move machine type to driver's private structure instead of
> >> quering platform device variants in runtime
> >>
> >> - replace s3c24xx_i2c_type enum with unsigned int that holds
> >> bitmask with revision-specific quirks
> >>
> >> Signed-off-by: Karol Lewandowski <k.lewandowsk@samsung.com>
> >> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
> >
> > Okay, so this driver needs to the 'data' field from either
> > platform_device_id or of_device_id and implements a function for that,
> > namely s3c24xx_get_device_quirks(). Grant, Rob: I'd think there might be
> > more drivers in need of that, so maybe it makes sense to have a generic
> > of-helper function?
Please wait one or two days before resending. Maybe Grant or Rob find
some time to answer this question. (Yeah, we can fix it later if such a
generic function is introduced somewhen).
> >> -/* i2c controller state */
> >> +#ifdef CONFIG_OF
> >> +static const struct of_device_id s3c24xx_i2c_match[];
> >> +#endif
> >
> > Uh, forward declaration with #ifdef. I'd think we should get this simply
> > to the front.
>
>
> Ok, as I think it's better to have dt and non-dt definitions together
> I'll move both of_device_id and platform_device_id to the top.
Agreed.
>
> >> +/* Treat S3C2410 as baseline hardware, anything else is supported via quirks */
> >> +#define QUIRK_S3C2440 (1 << 0)
> >
> > Minor: Is it really a quirk being s3c2440? Maybe FLAG_*, dunno.
>
>
> In first version[1] of this patch I've used TYPEs for device types
> and FLAGS for quirks. However, I've squashed these into "quirks" after
> discussion with Mark[2].
>
> [1] http://permalink.gmane.org/gmane.linux.kernel/1266759
> [2] http://permalink.gmane.org/gmane.linux.kernel.samsung-soc/10255
It's minor, keep the QUIRKs.
> [ I'll also drop above CONFIG_OF ifdef, as of_match_node() seem
> to be always defined since v3.2-rc1. ]
Great.
Thanks,
Wolfram
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2012-04-18 13:40 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-21 19:11 [PATCH v3 0/3] i2c-s3c2410: Updates for exynos4210 and DT-based systems Karol Lewandowski
2012-03-21 19:11 ` [PATCH 1/3] i2c-s3c2410: Drop unused define Karol Lewandowski
2012-04-18 10:56 ` Wolfram Sang
2012-03-21 19:11 ` [PATCH 2/3] i2c-s3c2410: Rework device type handling Karol Lewandowski
2012-03-21 20:30 ` Mark Brown
2012-04-17 17:31 ` Wolfram Sang
2012-04-18 11:55 ` Karol Lewandowski
2012-04-18 13:39 ` Wolfram Sang [this message]
2012-03-21 19:11 ` [PATCH 3/3] i2c-s3c2410: Add HDMIPHY quirk for S3C2440 Karol Lewandowski
2012-04-17 17:40 ` Wolfram Sang
2012-04-18 12:11 ` Marek Szyprowski
2012-04-18 13:46 ` Wolfram Sang
2012-04-18 16:31 ` Karol Lewandowski
2012-04-23 10:01 ` Wolfram Sang
2012-04-23 16:22 ` Karol Lewandowski
2012-04-13 9:30 ` [PATCH v3 0/3] i2c-s3c2410: Updates for exynos4210 and DT-based systems Karol Lewandowski
-- strict thread matches above, loose matches on Subject: below --
2012-03-13 16:54 [PATCH 0/3 v2] " Karol Lewandowski
2012-03-13 16:54 ` [PATCH 2/3] i2c-s3c2410: Rework device type handling Karol Lewandowski
2012-03-14 17:29 ` Mark Brown
2012-03-15 10:04 ` Karol Lewandowski
2012-03-15 12:56 ` Mark Brown
2012-03-15 16:54 ` Karol Lewandowski
2012-03-19 19:55 ` Mark Brown
2012-03-21 10:33 ` Karol Lewandowski
2012-03-21 11:50 ` Mark Brown
2012-03-21 11:54 ` Karol Lewandowski
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