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From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Heiko Stuebner <heiko@sntech.de>,
	<linux-rockchip@lists.infradead.org>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Michael Riesch <michael.riesch@wolfvision.net>,
	<kernel@pengutronix.de>, Will Deacon <will@kernel.org>,
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v4 04/21] PM / devfreq: rockchip-dfi: Add SoC specific init function
Date: Wed, 17 May 2023 11:19:02 +0100	[thread overview]
Message-ID: <20230517111902.00003867@Huawei.com> (raw)
In-Reply-To: <20230517092040.GT29365@pengutronix.de>


> >   
> > > +
> > > +	return 0;
> > > +};
> > > +
> > > +struct rockchip_dfi_devtype_data {
> > > +	int (*init)(struct rockchip_dfi *dfi);
> > > +};
> > > +
> > > +static struct rockchip_dfi_devtype_data rk3399_devtype_data = {
> > > +	.init = rk3399_dfi_init,  
> > 
> > I guess the 'why' will become apparent later in the set, but at this
> > stage a callback to get the ddr type would have made more sense and
> > kept the data local to where it was needed.  
> 
> struct rockchip_dfi_devtype_data will still have a single member by the
> end of this series. The reason I still prefer a struct type is that I've
> seen enough drivers that passed a single ad-hoc value in devtype data
> that I had to convert to pass a struct type because I had to add another
> value.
> 
> Well, I just realized that I have configured several values that I could
> have put in that struct in the SoC specific init function instead, so
> there's no real point in using a struct type.

I'm fine with the above being a struct - it was more the question of why
do everything in one 'init' function rather than having more specific
callbacks, e.g. one to just read the DDR type where you need it.



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WARNING: multiple messages have this Message-ID (diff)
From: Jonathan Cameron <Jonathan.Cameron@Huawei.com>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>,
	Heiko Stuebner <heiko@sntech.de>,
	<linux-rockchip@lists.infradead.org>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	MyungJoo Ham <myungjoo.ham@samsung.com>,
	Michael Riesch <michael.riesch@wolfvision.net>,
	<kernel@pengutronix.de>, Will Deacon <will@kernel.org>,
	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v4 04/21] PM / devfreq: rockchip-dfi: Add SoC specific init function
Date: Wed, 17 May 2023 11:19:02 +0100	[thread overview]
Message-ID: <20230517111902.00003867@Huawei.com> (raw)
In-Reply-To: <20230517092040.GT29365@pengutronix.de>


> >   
> > > +
> > > +	return 0;
> > > +};
> > > +
> > > +struct rockchip_dfi_devtype_data {
> > > +	int (*init)(struct rockchip_dfi *dfi);
> > > +};
> > > +
> > > +static struct rockchip_dfi_devtype_data rk3399_devtype_data = {
> > > +	.init = rk3399_dfi_init,  
> > 
> > I guess the 'why' will become apparent later in the set, but at this
> > stage a callback to get the ddr type would have made more sense and
> > kept the data local to where it was needed.  
> 
> struct rockchip_dfi_devtype_data will still have a single member by the
> end of this series. The reason I still prefer a struct type is that I've
> seen enough drivers that passed a single ad-hoc value in devtype data
> that I had to convert to pass a struct type because I had to add another
> value.
> 
> Well, I just realized that I have configured several values that I could
> have put in that struct in the SoC specific init function instead, so
> there's no real point in using a struct type.

I'm fine with the above being a struct - it was more the question of why
do everything in one 'init' function rather than having more specific
callbacks, e.g. one to just read the DDR type where you need it.



_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2023-05-17 10:19 UTC|newest]

Thread overview: 121+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-05 11:38 [PATCH v4 00/21] Add perf support to the rockchip-dfi driver Sascha Hauer
2023-05-05 11:38 ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 01/21] PM / devfreq: rockchip-dfi: Embed desc into private data struct Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-07 10:08   ` Heiko Stübner
2023-05-07 10:08     ` Heiko Stübner
2023-05-16 15:12   ` Jonathan Cameron
2023-05-16 15:12     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 02/21] PM / devfreq: rockchip-dfi: use consistent name for " Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-07 10:22   ` Heiko Stübner
2023-05-07 10:22     ` Heiko Stübner
2023-05-16 15:27   ` Jonathan Cameron
2023-05-16 15:27     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 03/21] PM / devfreq: rockchip-dfi: Make pmu regmap mandatory Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 15:33   ` Jonathan Cameron
2023-05-16 15:33     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 04/21] PM / devfreq: rockchip-dfi: Add SoC specific init function Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 15:40   ` Jonathan Cameron
2023-05-16 15:40     ` Jonathan Cameron
2023-05-17  9:20     ` Sascha Hauer
2023-05-17  9:20       ` Sascha Hauer
2023-05-17 10:19       ` Jonathan Cameron [this message]
2023-05-17 10:19         ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 05/21] PM / devfreq: rockchip-dfi: dfi store raw values in counter struct Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 15:43   ` Jonathan Cameron
2023-05-16 15:43     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 06/21] PM / devfreq: rockchip-dfi: Use free running counter Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 15:48   ` Jonathan Cameron
2023-05-16 15:48     ` Jonathan Cameron
2023-05-17  9:29     ` Sascha Hauer
2023-05-17  9:29       ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 07/21] PM / devfreq: rockchip-dfi: introduce channel mask Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 15:50   ` Jonathan Cameron
2023-05-16 15:50     ` Jonathan Cameron
2023-05-17  9:33     ` Sascha Hauer
2023-05-17  9:33       ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 08/21] PM / devfreq: rk3399_dmc,dfi: generalize DDRTYPE defines Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 15:54   ` Jonathan Cameron
2023-05-16 15:54     ` Jonathan Cameron
2023-05-17 10:51     ` Sascha Hauer
2023-05-17 10:51       ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 09/21] PM / devfreq: rockchip-dfi: Clean up DDR type register defines Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 16:01   ` Jonathan Cameron
2023-05-16 16:01     ` Jonathan Cameron
2023-05-17 11:11     ` Sascha Hauer
2023-05-17 11:11       ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 10/21] PM / devfreq: rockchip-dfi: Add RK3568 support Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 16:04   ` Jonathan Cameron
2023-05-16 16:04     ` Jonathan Cameron
2023-05-17 11:38     ` Sascha Hauer
2023-05-17 11:38       ` Sascha Hauer
2023-05-17 14:46       ` Jonathan Cameron
2023-05-17 14:46         ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 11/21] PM / devfreq: rockchip-dfi: Handle LPDDR2 correctly Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 16:06   ` Jonathan Cameron
2023-05-16 16:06     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 12/21] PM / devfreq: rockchip-dfi: Handle LPDDR4X Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 16:09   ` Jonathan Cameron
2023-05-16 16:09     ` Jonathan Cameron
2023-05-19  6:14     ` Sascha Hauer
2023-05-19  6:14       ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 13/21] PM / devfreq: rockchip-dfi: Pass private data struct to internal functions Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 16:10   ` Jonathan Cameron
2023-05-16 16:10     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 14/21] PM / devfreq: rockchip-dfi: Prepare for multiple users Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 16:16   ` Jonathan Cameron
2023-05-16 16:16     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 15/21] PM / devfreq: rockchip-dfi: Add perf support Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-09 20:04   ` Robin Murphy
2023-05-10 19:56     ` Sascha Hauer
2023-05-16 15:39       ` Sascha Hauer
2023-05-16 15:39         ` Sascha Hauer
2023-05-16 15:27     ` Sascha Hauer
2023-05-16 15:27       ` Sascha Hauer
2023-05-17 10:53   ` Jonathan Cameron
2023-05-17 10:53     ` Jonathan Cameron
2023-05-17 14:26     ` Sascha Hauer
2023-05-17 14:26       ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 16/21] PM / devfreq: rockchip-dfi: make register stride SoC specific Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-16 16:18   ` Jonathan Cameron
2023-05-16 16:18     ` Jonathan Cameron
2023-05-19  6:45     ` Sascha Hauer
2023-05-19  6:45       ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 17/21] PM / devfreq: rockchip-dfi: account for multiple DDRMON_CTRL registers Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-17 10:23   ` Jonathan Cameron
2023-05-17 10:23     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 18/21] PM / devfreq: rockchip-dfi: add support for RK3588 Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-17 10:24   ` Jonathan Cameron
2023-05-17 10:24     ` Jonathan Cameron
2023-05-05 11:38 ` [PATCH v4 19/21] arm64: dts: rockchip: rk3399: Enable DFI Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 20/21] arm64: dts: rockchip: rk356x: Add DFI Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-05 11:38 ` [PATCH v4 21/21] dt-bindings: devfreq: event: convert Rockchip DFI binding to yaml Sascha Hauer
2023-05-05 11:38   ` Sascha Hauer
2023-05-05 16:29   ` Krzysztof Kozlowski
2023-05-05 16:29     ` Krzysztof Kozlowski
2023-05-05 16:31     ` Krzysztof Kozlowski
2023-05-05 16:31       ` Krzysztof Kozlowski
2023-05-09  9:37       ` Sascha Hauer
2023-05-09  9:40         ` Krzysztof Kozlowski
2023-05-09 10:02           ` Sascha Hauer
2023-05-05 16:38 ` [PATCH v4 00/21] Add perf support to the rockchip-dfi driver Vincent Legoll
2023-05-05 16:38   ` Vincent Legoll

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