linux-kernel - Re: [PATCH] soc: qcom: provide mechanism for drivers to access L2 registers

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Date:	Mon, 23 May 2016 11:43:15 -0400
From:	Neil Leeder <nleeder@...eaurora.org>
To:	Stephen Boyd <sboyd@...eaurora.org>,
	David Brown <david.brown@...aro.org>,
	Andy Gross <andy.gross@...aro.org>
Cc:	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Mark Langsdorf <mlangsdo@...hat.com>,
	Mark Salter <msalter@...hat.com>, Jon Masters <jcm@...hat.com>,
	Timur Tabi <timur@...eaurora.org>, cov@...eaurora.org,
	ashwin.chaugule@...aro.org
Subject: Re: [PATCH] soc: qcom: provide mechanism for drivers to access L2
 registers



On 5/20/2016 05:19 PM, Stephen Boyd wrote:
> On 05/20/2016 12:13 PM, Neil Leeder wrote:
>> diff --git a/drivers/soc/qcom/l2-accessors.c b/drivers/soc/qcom/l2-accessors.c
>> new file mode 100644
>> index 0000000..fbb69bd
>> --- /dev/null
>> +++ b/drivers/soc/qcom/l2-accessors.c
>> @@ -0,0 +1,66 @@
>> +/*
>> + * Copyright (c) 2014-2016 The Linux Foundation. All rights reserved.
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License version 2 and
>> + * only version 2 as published by the Free Software Foundation.
>> + *
>> + * This program is distributed in the hope that it will be useful,
>> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> + * GNU General Public License for more details.
>> + */
>> +
>> +#include <linux/spinlock.h>
>> +#include <linux/module.h>
> 
> export.h instead?

OK, will address in v2

> 
>> +#include <linux/soc/qcom/l2-accessors.h>
>> +#include <asm/cputype.h>
>> +#include <asm/sysreg.h>
> 
> Is there a patch to add sysreg.h to arch/arm? It would be nice to use
> one l2 accessor API on arm64 and arm.
> 

Sounds like a good thing for the next person who submits a krait L2 patch to consider.

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