[2/4,v2] ARM: mxs: factor out dynamic amba device allocator

Replace the local amba device allocator with the core code from
the bus driver.

Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
ChangeLog v1->v2: fixed up the compile warnings spotted
by Shawn.
---
 arch/arm/mach-mxs/devices-mx23.h                |   12 +++++--
 arch/arm/mach-mxs/devices-mx28.h                |   12 +++++--
 arch/arm/mach-mxs/devices.c                     |   16 ---------
 arch/arm/mach-mxs/devices/Makefile              |    1 -
 arch/arm/mach-mxs/devices/amba-duart.c          |   40 -----------------------
 arch/arm/mach-mxs/include/mach/devices-common.h |    5 ---
 6 files changed, 18 insertions(+), 68 deletions(-)
 delete mode 100644 arch/arm/mach-mxs/devices/amba-duart.c

On 04/03/2012 01:09 PM, Linus Walleij wrote:
> Replace the local amba device allocator with the core code from
> the bus driver.
> 
> Acked-by: Shawn Guo <shawn.guo@linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Just nitpicking: You can make use of PTR_RET() instead of open-coding it
(see inline).

regards, Marc

> ---
> ChangeLog v1->v2: fixed up the compile warnings spotted
> by Shawn.
> ---
>  arch/arm/mach-mxs/devices-mx23.h                |   12 +++++--
>  arch/arm/mach-mxs/devices-mx28.h                |   12 +++++--
>  arch/arm/mach-mxs/devices.c                     |   16 ---------
>  arch/arm/mach-mxs/devices/Makefile              |    1 -
>  arch/arm/mach-mxs/devices/amba-duart.c          |   40 -----------------------
>  arch/arm/mach-mxs/include/mach/devices-common.h |    5 ---
>  6 files changed, 18 insertions(+), 68 deletions(-)
>  delete mode 100644 arch/arm/mach-mxs/devices/amba-duart.c
> 
> diff --git a/arch/arm/mach-mxs/devices-mx23.h b/arch/arm/mach-mxs/devices-mx23.h
> index 4d1329d..9acdd63 100644
> --- a/arch/arm/mach-mxs/devices-mx23.h
> +++ b/arch/arm/mach-mxs/devices-mx23.h
> @@ -11,10 +11,16 @@
>  #include <mach/mx23.h>
>  #include <mach/devices-common.h>
>  #include <mach/mxsfb.h>
> +#include <linux/amba/bus.h>
>  
> -extern const struct amba_device mx23_duart_device __initconst;
> -#define mx23_add_duart() \
> -	mxs_add_duart(&mx23_duart_device)
> +static inline int mx23_add_duart(void)
> +{
> +	struct amba_device *d;
> +
> +	d = amba_ahb_device_add(NULL, "duart", MX23_DUART_BASE_ADDR, SZ_8K,
> +				MX23_INT_DUART, 0, 0, 0);
> +	return IS_ERR(d) ? PTR_ERR(d) : 0;

there's a helper for that PTR_RET.

> +}
>  
>  extern const struct mxs_auart_data mx23_auart_data[] __initconst;
>  #define mx23_add_auart(id)	mxs_add_auart(&mx23_auart_data[id])
> diff --git a/arch/arm/mach-mxs/devices-mx28.h b/arch/arm/mach-mxs/devices-mx28.h
> index 9dbeae1..84b2960 100644
> --- a/arch/arm/mach-mxs/devices-mx28.h
> +++ b/arch/arm/mach-mxs/devices-mx28.h
> @@ -11,10 +11,16 @@
>  #include <mach/mx28.h>
>  #include <mach/devices-common.h>
>  #include <mach/mxsfb.h>
> +#include <linux/amba/bus.h>
>  
> -extern const struct amba_device mx28_duart_device __initconst;
> -#define mx28_add_duart() \
> -	mxs_add_duart(&mx28_duart_device)
> +static inline int mx28_add_duart(void)
> +{
> +	struct amba_device *d;
> +
> +	d = amba_ahb_device_add(NULL, "duart", MX28_DUART_BASE_ADDR, SZ_8K,
> +				MX28_INT_DUART, 0, 0, 0);
> +	return IS_ERR(d) ? PTR_ERR(d) : 0;

dito

> +}
>  
>  extern const struct mxs_auart_data mx28_auart_data[] __initconst;
>  #define mx28_add_auart(id)	mxs_add_auart(&mx28_auart_data[id])
> diff --git a/arch/arm/mach-mxs/devices.c b/arch/arm/mach-mxs/devices.c
> index 01faffe..cf50b5a 100644
> --- a/arch/arm/mach-mxs/devices.c
> +++ b/arch/arm/mach-mxs/devices.c
> @@ -75,22 +75,6 @@ err:
>  	return pdev;
>  }
>  
> -int __init mxs_add_amba_device(const struct amba_device *dev)
> -{
> -	struct amba_device *adev = amba_device_alloc(dev->dev.init_name,
> -		dev->res.start, resource_size(&dev->res));
> -
> -	if (!adev) {
> -		pr_err("%s: failed to allocate memory", __func__);
> -		return -ENOMEM;
> -	}
> -
> -	adev->irq[0] = dev->irq[0];
> -	adev->irq[1] = dev->irq[1];
> -
> -	return amba_device_add(adev, &iomem_resource);
> -}
> -
>  struct device mxs_apbh_bus = {
>  	.init_name	= "mxs_apbh",
>  	.parent         = &platform_bus,
> diff --git a/arch/arm/mach-mxs/devices/Makefile b/arch/arm/mach-mxs/devices/Makefile
> index c8f5c95..5f72d97 100644
> --- a/arch/arm/mach-mxs/devices/Makefile
> +++ b/arch/arm/mach-mxs/devices/Makefile
> @@ -1,4 +1,3 @@
> -obj-$(CONFIG_MXS_HAVE_AMBA_DUART) += amba-duart.o
>  obj-$(CONFIG_MXS_HAVE_PLATFORM_AUART) += platform-auart.o
>  obj-y += platform-dma.o
>  obj-$(CONFIG_MXS_HAVE_PLATFORM_FEC) += platform-fec.o
> diff --git a/arch/arm/mach-mxs/devices/amba-duart.c b/arch/arm/mach-mxs/devices/amba-duart.c
> deleted file mode 100644
> index a5479f7..0000000
> --- a/arch/arm/mach-mxs/devices/amba-duart.c
> +++ /dev/null
> @@ -1,40 +0,0 @@
> -/*
> - * Copyright (C) 2009-2010 Pengutronix
> - * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
> - *
> - * Copyright 2010 Freescale Semiconductor, Inc. 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 as published by the
> - * Free Software Foundation.
> - */
> -#include <asm/irq.h>
> -#include <mach/mx23.h>
> -#include <mach/mx28.h>
> -#include <mach/devices-common.h>
> -
> -#define MXS_AMBA_DUART_DEVICE(name, soc)			\
> -const struct amba_device name##_device __initconst = {		\
> -	.dev = {						\
> -		.init_name = "duart",				\
> -	},							\
> -	.res = {						\
> -		.start = soc ## _DUART_BASE_ADDR,		\
> -		.end = (soc ## _DUART_BASE_ADDR) + SZ_8K - 1,	\
> -		.flags = IORESOURCE_MEM,			\
> -	},							\
> -	.irq = {soc ## _INT_DUART},				\
> -}
> -
> -#ifdef CONFIG_SOC_IMX23
> -MXS_AMBA_DUART_DEVICE(mx23_duart, MX23);
> -#endif
> -
> -#ifdef CONFIG_SOC_IMX28
> -MXS_AMBA_DUART_DEVICE(mx28_duart, MX28);
> -#endif
> -
> -int __init mxs_add_duart(const struct amba_device *dev)
> -{
> -	return mxs_add_amba_device(dev);
> -}
> diff --git a/arch/arm/mach-mxs/include/mach/devices-common.h b/arch/arm/mach-mxs/include/mach/devices-common.h
> index f2e3839..21e45a7 100644
> --- a/arch/arm/mach-mxs/include/mach/devices-common.h
> +++ b/arch/arm/mach-mxs/include/mach/devices-common.h
> @@ -27,11 +27,6 @@ static inline struct platform_device *mxs_add_platform_device(
>  			name, id, res, num_resources, data, size_data, 0);
>  }
>  
> -int __init mxs_add_amba_device(const struct amba_device *dev);
> -
> -/* duart */
> -int __init mxs_add_duart(const struct amba_device *dev);
> -
>  /* auart */
>  struct mxs_auart_data {
>  	int id;