linux-kernel - Re: [PATCH v5 4/7] drivers: mtd: nand: Add qpic

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Message-ID: <20240516143748.2aa6de80@xps-13>
Date: Thu, 16 May 2024 14:37:48 +0200
From: Miquel Raynal <miquel.raynal@...tlin.com>
To: Md Sadre Alam <quic_mdalam@...cinc.com>
Cc: broonie@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
 conor+dt@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
 richard@....at, vigneshr@...com, manivannan.sadhasivam@...aro.org,
 linux-arm-msm@...r.kernel.org, linux-spi@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-mtd@...ts.infradead.org, quic_srichara@...cinc.com,
 quic_varada@...cinc.com, Alexandru Gagniuc <mr.nuke.me@...il.com>
Subject: Re: [PATCH v5 4/7] drivers: mtd: nand: Add qpic_common API file

Hello,

> --- a/drivers/mtd/nand/Kconfig
> +++ b/drivers/mtd/nand/Kconfig
> @@ -61,6 +61,14 @@ config MTD_NAND_ECC_MEDIATEK
>  	help
>  	  This enables support for the hardware ECC engine from Mediatek.
>  
> +config QPIC_COMMON
> +	tristate "QPIC common api file"
> +	depends on ARCH_QCOM || COMPILE_TEST
> +	help
> +	  This enables support for common api for qpic nand controller.
> +	  common apis will be used by both raw nand driver and serial nand
> +	  driver.

This should probably not be a standalone selectable item. Make it
automatically selected by the users including the common header.

> +
>  endmenu
>  
>  endmenu
> diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
> index 19e1291ac4d5..c0c1f8bd0220 100644
> --- a/drivers/mtd/nand/Makefile
> +++ b/drivers/mtd/nand/Makefile
> @@ -3,6 +3,7 @@
>  nandcore-objs := core.o bbt.o
>  obj-$(CONFIG_MTD_NAND_CORE) += nandcore.o
>  obj-$(CONFIG_MTD_NAND_ECC_MEDIATEK) += ecc-mtk.o
> +obj-$(CONFIG_QPIC_COMMON) += qpic_common.o
>  
>  obj-y	+= onenand/
>  obj-y	+= raw/
> diff --git a/drivers/mtd/nand/qpic_common.c b/drivers/mtd/nand/qpic_common.c
> new file mode 100644
> index 000000000000..d48892141365
> --- /dev/null
> +++ b/drivers/mtd/nand/qpic_common.c
> @@ -0,0 +1,741 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (c) 2016, The Linux Foundation. All rights reserved.
> + */
> +#include <linux/bitops.h>
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/dmaengine.h>
> +#include <linux/dma-mapping.h>
> +#include <linux/dma/qcom_adm.h>
> +#include <linux/dma/qcom_bam_dma.h>
> +#include <linux/module.h>
> +#include <linux/mtd/partitions.h>
> +#include <linux/mtd/rawnand.h>

No raw NAND include in the common file. If there is something raw NAND
specific, it should not be here.

> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/slab.h>
> +#include <linux/mtd/nand-qpic-common.h>

Thanks,
Miquèl