linux-kernel - Re: [PATCH 08/12] nvmem: uniphier: add UniPhier eFuse driver

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Date:   Fri, 20 Oct 2017 15:37:16 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     srinivas.kandagatla@...aro.org
Cc:     linux-kernel@...r.kernel.org,
        Keiji Hayashibara <hayashibara.keiji@...ionext.com>
Subject: Re: [PATCH 08/12] nvmem: uniphier: add UniPhier eFuse driver

On Mon, Oct 09, 2017 at 03:26:37PM +0200, srinivas.kandagatla@...aro.org wrote:
> From: Keiji Hayashibara <hayashibara.keiji@...ionext.com>
> 
> Add eFuse driver for Socionext UniPhier series SoC.
> Note that eFuse device is under soc-glue and this register
> implements as read only.
> 
> Signed-off-by: Keiji Hayashibara <hayashibara.keiji@...ionext.com>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> ---
>  drivers/nvmem/Kconfig          | 11 +++++
>  drivers/nvmem/Makefile         |  2 +
>  drivers/nvmem/uniphier-efuse.c | 97 ++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 110 insertions(+)
>  create mode 100644 drivers/nvmem/uniphier-efuse.c
> 
> diff --git a/drivers/nvmem/Kconfig b/drivers/nvmem/Kconfig
> index ea3044c5d6ee..2755df8f6e9b 100644
> --- a/drivers/nvmem/Kconfig
> +++ b/drivers/nvmem/Kconfig
> @@ -123,6 +123,17 @@ config NVMEM_SUNXI_SID
>  	  This driver can also be built as a module. If so, the module
>  	  will be called nvmem_sunxi_sid.
>  
> +config UNIPHIER_EFUSE
> +	tristate "UniPhier SoCs eFuse support"
> +	depends on ARCH_UNIPHIER || COMPILE_TEST
> +	depends on HAS_IOMEM
> +	help
> +	  This is a simple driver to dump specified values of UniPhier SoC
> +	  from eFuse.
> +
> +	  This driver can also be built as a module. If so, the module
> +	  will be called nvmem-uniphier-efuse.
> +
>  config NVMEM_VF610_OCOTP
>  	tristate "VF610 SoC OCOTP support"
>  	depends on SOC_VF610 || COMPILE_TEST
> diff --git a/drivers/nvmem/Makefile b/drivers/nvmem/Makefile
> index 4c589184acee..11825353f729 100644
> --- a/drivers/nvmem/Makefile
> +++ b/drivers/nvmem/Makefile
> @@ -26,6 +26,8 @@ obj-$(CONFIG_ROCKCHIP_EFUSE)	+= nvmem_rockchip_efuse.o
>  nvmem_rockchip_efuse-y		:= rockchip-efuse.o
>  obj-$(CONFIG_NVMEM_SUNXI_SID)	+= nvmem_sunxi_sid.o
>  nvmem_sunxi_sid-y		:= sunxi_sid.o
> +obj-$(CONFIG_UNIPHIER_EFUSE)	+= nvmem-uniphier-efuse.o
> +nvmem-uniphier-efuse-y		:= uniphier-efuse.o
>  obj-$(CONFIG_NVMEM_VF610_OCOTP)	+= nvmem-vf610-ocotp.o
>  nvmem-vf610-ocotp-y		:= vf610-ocotp.o
>  obj-$(CONFIG_MESON_EFUSE)	+= nvmem_meson_efuse.o
> diff --git a/drivers/nvmem/uniphier-efuse.c b/drivers/nvmem/uniphier-efuse.c
> new file mode 100644
> index 000000000000..2bb45c42fd6b
> --- /dev/null
> +++ b/drivers/nvmem/uniphier-efuse.c
> @@ -0,0 +1,97 @@
> +/*
> + * UniPhier eFuse driver
> + *
> + * Copyright (C) 2017 Socionext Inc.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License 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/device.h>
> +#include <linux/io.h>
> +#include <linux/module.h>
> +#include <linux/nvmem-provider.h>
> +#include <linux/platform_device.h>
> +
> +struct uniphier_efuse_priv {
> +	void __iomem *base;
> +};

Don't do this private mess here :(