linux-kernel - Re: [PATCH v5 08/11] nvmem: qfprom: Add Qualcomm QFPROM support.

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Date:	Thu, 18 Jun 2015 14:22:27 +0100
From:	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:	Stephen Boyd <sboyd@...eaurora.org>,
	linux-arm-kernel@...ts.infradead.org
CC:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Rob Herring <robh+dt@...nel.org>,
	Kumar Gala <galak@...eaurora.org>,
	Mark Brown <broonie@...nel.org>, s.hauer@...gutronix.de,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-api@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	arnd@...db.de, pantelis.antoniou@...sulko.com, mporter@...sulko.com
Subject: Re: [PATCH v5 08/11] nvmem: qfprom: Add Qualcomm QFPROM support.



On 17/06/15 00:00, Stephen Boyd wrote:
> On 05/21/2015 09:44 AM, Srinivas Kandagatla wrote:
>> diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig
>> index f157b6d..e665e23 100644
>> --- a/drivers/nvmem/Kconfig
>> +++ b/drivers/nvmem/Kconfig
>> @@ -8,3 +8,18 @@ menuconfig NVMEM
>>   	  from both the Linux Kernel and the userspace.
>>
>>   	  If unsure, say no.
>> +
>> +if NVMEM
>> +
>> +config QCOM_QFPROM
>> +	tristate "QCOM QFPROM Support"
>> +	depends on ARCH_QCOM
>
>   || COMPILE_TEST?
>
Yes, makes sense. I will add it.
>> +	select REGMAP_MMIO
>> +	help
>> +	  Say y here to enable QFPROM support. The QFPROM provides access
>> +	  functions for QFPROM data to rest of the drivers via nvmem interface.
>> +
>> +	  This driver can also be built as a module. If so, the module
>> +	  will be called nvmem-qfprom.
>> +
>> +endif
>> diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile
>> index f694cfc..caea611 100644
>> --- a/drivers/nvmem/Makefile
>> +++ b/drivers/nvmem/Makefile
>> @@ -5,3 +5,7 @@
>>   obj-$(CONFIG_NVMEM)		+= nvmem_core.o
>>   nvmem_core-y			:= core.o
>>   nvmem_core-y			+= nvmem-mmio.o
>> +
>> +# Devices
>> +obj-$(CONFIG_QCOM_QFPROM)	+= nvmem_qfprom.o
>> +nvmem_qfprom-y			:= qfprom.o
>
> Why not just
>
> obj-$(CONFIG_QCOM_QFPROM) += nvmem_qfprom.o
>
> ?
I will recheck on this.
>
>> diff --git a/drivers/nvmem/qfprom.c b/drivers/nvmem/qfprom.c
>> new file mode 100644
>> index 0000000..5ea84bb
>> --- /dev/null
>> +++ b/drivers/nvmem/qfprom.c
>> @@ -0,0 +1,51 @@
>> +/*
>> + * Copyright (C) 2015 Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
>> + *
>> + * 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/module.h>
>> +#include <linux/of.h>
>> +#include "nvmem-mmio.h"
>> +
>> +static struct regmap_config qfprom_regmap_config = {
>
> const?

Will fix all the comments.
>
>> +	.reg_bits = 32,
>> +	.val_bits = 8,
>> +	.reg_stride = 1,
>> +};
>> +
>> +static struct nvmem_config econfig = {
>
> const?
>
>> +	.name = "qfprom",
>> +	.owner = THIS_MODULE,
>> +};
>> +
>> +static struct nvmem_mmio_data qfprom_data = {
>
> const?
>
>> +	.nvmem_config = &econfig,
>> +	.regmap_config = &qfprom_regmap_config,
>> +};
>>
>
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