linux-kernel - Re: [PATCH v13 2/3] power-domain: rockchip: add power domain driver

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Date:	Mon, 20 Apr 2015 22:42:44 +0800
From:	Caesar Wang <wxt@...k-chips.com>
To:	Paul Bolle <pebolle@...cali.nl>
CC:	heiko@...ech.de, khilman@...aro.org,
	linux-arm-kernel@...ts.infradead.org, tomasz.figa@...il.com,
	mark.rutland@....com, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-rockchip@...ts.infradead.org, dianders@...omium.org,
	ulf.hansson@...aro.org, dmitry.torokhov@...il.com,
	broonie@...nel.org, grant.likely@...aro.org,
	"jinkun.hong" <jinkun.hong@...k-chips.com>
Subject: Re: [PATCH v13 2/3] power-domain: rockchip: add power domain driver

Paul,

Thanks your commnets!:-)

在 2015年04月20日 17:26, Paul Bolle 写道:
> On Sun, 2015-04-19 at 18:44 +0800, Caesar Wang wrote:
>> --- a/arch/arm/mach-rockchip/Makefile
>> +++ b/arch/arm/mach-rockchip/Makefile
> +obj-$(CONFIG_PM_GENERIC_DOMAINS) += pm_domains.o
>
> PM_GENERIC_DOMAINS is a bool symbol, so pm_domains.o can never be part
> of a module. Is that correct?

Yeah, So this platform_driver does not need to set an owner, it will be 
populated by the
driver core.
>
>> --- /dev/null
>> +++ b/arch/arm/mach-rockchip/pm_domains.c
>> +#include <linux/module.h>
> This include could probably be dropped.

Yeah. As the about said.
>> +static const struct of_device_id rockchip_pm_domain_dt_match[] = {
>> +	{
>> +		.compatible = "rockchip,rk3288-power-controller",
>> +		.data = (void *)&rk3288_pmu,
>> +	},
>> +	{ /* sentinel */ },
>> +};
>> +MODULE_DEVICE_TABLE(of, rockchip_pm_domain_dt_match);
> The MODULE_DEVICE_TABLE() macro will be preprocessed away for built-in
> code, according to include/linux/module.h.

So,do you think we should remove it?
wow.....,looks we should remove it.
>> +static struct platform_driver rockchip_pm_domain_driver = {
>> +	.probe = rockchip_pm_domain_probe,
>> +	.driver = {
>> +		.name   = "rockchip-pm-domain",
>> +		.owner  = THIS_MODULE,
> According to include/linux/export.h THIS_MODULE is equivalent to NULL
> for built-in code. So I think this line is not needed.
>

Yeah,you are right.
>> +		.of_match_table = rockchip_pm_domain_dt_match,
>> +		/*
>> +		 * We can't forcibly eject devices form power domain,
>> +		 * so we can't really remove power domains once they
>> +		 * were added.
>> +		 */
>> +		.suppress_bind_attrs = true,
>> +	},
>> +};
> Thanks,
>
>
> Paul Bolle
>
>
>
>
Thanks,

Caesar

-- 
**************************************************************************************
王晓腾    Caesar Wang
Product R&D Dept.III
Fuzhou Rockchip Electronics Co.Ltd
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E-mail : wxt@...k-chips.com
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