linux-kernel - Re: [PATCH 1/2][v3] driver/memory:Move Freescale IFC driver to a common driver

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Message-Id: <E7780BC2-F914-4D0C-8AB9-9FE7437A5C48@kernel.crashing.org>
Date:	Fri, 17 Jan 2014 11:08:44 -0600
From:	Kumar Gala <galak@...nel.crashing.org>
To:	Prabhakar Kushwaha <prabhakar@...escale.com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	Scott Wood <scottwood@...escale.com>
Subject: Re: [PATCH 1/2][v3] driver/memory:Move Freescale IFC driver to a common driver


On Jan 15, 2014, at 11:42 PM, Prabhakar Kushwaha <prabhakar@...escale.com> wrote:

> Freescale IFC controller has been used for mpc8xxx. It will be used
> for ARM-based SoC as well. This patch moves the driver to driver/memory
> and fix the header file includes.
> 
> Also remove module_platform_driver() and  instead call
> platform_driver_register() from subsys_initcall() to make sure this module
> has been loaded before MTD partition parsing starts.
> 
> Signed-off-by: Prabhakar Kushwaha <prabhakar@...escale.com>
> Acked-by: Arnd Bergmann <arnd@...db.de>
> ---
> Changes for v2:
> 	- Move fsl_ifc in driver/memory
> 
> Changes for v3:
> 	- move device tree bindings to memory
> 
> .../{powerpc => memory-controllers}/fsl/ifc.txt    |    0
> arch/powerpc/sysdev/Makefile                       |    1 -
> drivers/memory/Makefile                            |    1 +
> {arch/powerpc/sysdev => drivers/memory}/fsl_ifc.c  |    8 ++++++--
> drivers/mtd/nand/fsl_ifc_nand.c                    |    2 +-
> .../include/asm => include/linux}/fsl_ifc.h        |    0
> 6 files changed, 8 insertions(+), 4 deletions(-)
> rename Documentation/devicetree/bindings/{powerpc => memory-controllers}/fsl/ifc.txt (100%)
> rename {arch/powerpc/sysdev => drivers/memory}/fsl_ifc.c (98%)
> rename {arch/powerpc/include/asm => include/linux}/fsl_ifc.h (100%)

The Kconfig option for FSL_IFC should move into drivers/memory/Kconfig

> 
> diff --git a/Documentation/devicetree/bindings/powerpc/fsl/ifc.txt b/Documentation/devicetree/bindings/memory-controllers/fsl/ifc.txt
> similarity index 100%
> rename from Documentation/devicetree/bindings/powerpc/fsl/ifc.txt
> rename to Documentation/devicetree/bindings/memory-controllers/fsl/ifc.txt
> diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
> index f67ac90..afbcc37 100644
> --- a/arch/powerpc/sysdev/Makefile
> +++ b/arch/powerpc/sysdev/Makefile
> @@ -21,7 +21,6 @@ obj-$(CONFIG_FSL_SOC)		+= fsl_soc.o fsl_mpic_err.o
> obj-$(CONFIG_FSL_PCI)		+= fsl_pci.o $(fsl-msi-obj-y)
> obj-$(CONFIG_FSL_PMC)		+= fsl_pmc.o
> obj-$(CONFIG_FSL_LBC)		+= fsl_lbc.o
> -obj-$(CONFIG_FSL_IFC)		+= fsl_ifc.o
> obj-$(CONFIG_FSL_GTM)		+= fsl_gtm.o
> obj-$(CONFIG_FSL_85XX_CACHE_SRAM)	+= fsl_85xx_l2ctlr.o fsl_85xx_cache_sram.o
> obj-$(CONFIG_SIMPLE_GPIO)	+= simple_gpio.o
> diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile
> index 969d923..f2bf25c 100644
> --- a/drivers/memory/Makefile
> +++ b/drivers/memory/Makefile
> @@ -6,6 +6,7 @@ ifeq ($(CONFIG_DDR),y)
> obj-$(CONFIG_OF)		+= of_memory.o
> endif
> obj-$(CONFIG_TI_EMIF)		+= emif.o
> +obj-$(CONFIG_FSL_IFC)		+= fsl_ifc.o
> obj-$(CONFIG_MVEBU_DEVBUS)	+= mvebu-devbus.o
> obj-$(CONFIG_TEGRA20_MC)	+= tegra20-mc.o
> obj-$(CONFIG_TEGRA30_MC)	+= tegra30-mc.o
> diff --git a/arch/powerpc/sysdev/fsl_ifc.c b/drivers/memory/fsl_ifc.c
> similarity index 98%
> rename from arch/powerpc/sysdev/fsl_ifc.c
> rename to drivers/memory/fsl_ifc.c
> index d7fc722..135a950 100644
> --- a/arch/powerpc/sysdev/fsl_ifc.c
> +++ b/drivers/memory/fsl_ifc.c
> @@ -30,8 +30,8 @@
> #include <linux/of.h>
> #include <linux/of_device.h>
> #include <linux/platform_device.h>
> +#include <linux/fsl_ifc.h>
> #include <asm/prom.h>
> -#include <asm/fsl_ifc.h>
> 
> struct fsl_ifc_ctrl *fsl_ifc_ctrl_dev;
> EXPORT_SYMBOL(fsl_ifc_ctrl_dev);
> @@ -299,7 +299,11 @@ static struct platform_driver fsl_ifc_ctrl_driver = {
> 	.remove      = fsl_ifc_ctrl_remove,
> };
> 
> -module_platform_driver(fsl_ifc_ctrl_driver);
> +static int __init fsl_ifc_init(void)
> +{
> +	return platform_driver_register(&fsl_ifc_ctrl_driver);
> +}
> +subsys_initcall(fsl_ifc_init);
> 
> MODULE_LICENSE("GPL");
> MODULE_AUTHOR("Freescale Semiconductor");
> diff --git a/drivers/mtd/nand/fsl_ifc_nand.c b/drivers/mtd/nand/fsl_ifc_nand.c
> index 4335577..865b323 100644
> --- a/drivers/mtd/nand/fsl_ifc_nand.c
> +++ b/drivers/mtd/nand/fsl_ifc_nand.c
> @@ -30,7 +30,7 @@
> #include <linux/mtd/nand.h>
> #include <linux/mtd/partitions.h>
> #include <linux/mtd/nand_ecc.h>
> -#include <asm/fsl_ifc.h>
> +#include <linux/fsl_ifc.h>
> 
> #define FSL_IFC_V1_1_0	0x01010000
> #define ERR_BYTE		0xFF /* Value returned for read
> diff --git a/arch/powerpc/include/asm/fsl_ifc.h b/include/linux/fsl_ifc.h
> similarity index 100%
> rename from arch/powerpc/include/asm/fsl_ifc.h
> rename to include/linux/fsl_ifc.h
> -- 
> 1.7.9.5
> 
> 
> 
> --
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