[2/8] IBM Akebono: Add a SDHCI platform driver

This patch adds a SDHCI platform driver for the new IBM PPC476GTR SoC
which is on the Akebono board.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Cc: Chris Ball <cjb@laptop.org>
Cc: linux-mmc@vger.kernel.org
---
 drivers/mmc/host/Kconfig           |   12 ++++++++
 drivers/mmc/host/Makefile          |    1 +
 drivers/mmc/host/sdhci-of-476gtr.c |   60 ++++++++++++++++++++++++++++++++++++
 3 files changed, 73 insertions(+)
 create mode 100644 drivers/mmc/host/sdhci-of-476gtr.c

Hi,

I originally sent this to the linuxppc-dev list thinking Ben H might take it, 
however it should go through the appropriate subsystem. Can someone please 
merge it into the appropriate tree (unless the are problems with it)?

Thanks.

Regards,

Alistair

On Fri, 22 Nov 2013 13:08:30 Alistair Popple wrote:
> This patch adds a SDHCI platform driver for the new IBM PPC476GTR SoC
> which is on the Akebono board.
> 
> Signed-off-by: Alistair Popple <alistair@popple.id.au>
> Cc: Chris Ball <cjb@laptop.org>
> Cc: linux-mmc@vger.kernel.org
> ---
>  drivers/mmc/host/Kconfig           |   12 ++++++++
>  drivers/mmc/host/Makefile          |    1 +
>  drivers/mmc/host/sdhci-of-476gtr.c |   60
> ++++++++++++++++++++++++++++++++++++ 3 files changed, 73 insertions(+)
>  create mode 100644 drivers/mmc/host/sdhci-of-476gtr.c
> 
> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
> index 7fc5099..14210df 100644
> --- a/drivers/mmc/host/Kconfig
> +++ b/drivers/mmc/host/Kconfig
> @@ -130,6 +130,18 @@ config MMC_SDHCI_OF_HLWD
> 
>  	  If unsure, say N.
> 
> +config MMC_SDHCI_OF_476GTR
> +	tristate "SDHCI OF support for the IBM PPC476GTR SoC"
> +	depends on MMC_SDHCI_PLTFM
> +	depends on PPC_OF
> +	help
> +	  This selects the Secure Digital Host Controller Interface (SDHCI)
> +	  found on the PPC476GTR SoC.
> +
> +	  If you have a controller with this interface, say Y or M here.
> +
> +	  If unsure, say N.
> +
>  config MMC_SDHCI_CNS3XXX
>  	tristate "SDHCI support on the Cavium Networks CNS3xxx SoC"
>  	depends on ARCH_CNS3XXX
> diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
> index c41d0c3..92beff3 100644
> --- a/drivers/mmc/host/Makefile
> +++ b/drivers/mmc/host/Makefile
> @@ -59,6 +59,7 @@ obj-$(CONFIG_MMC_SDHCI_DOVE)		+= sdhci-dove.o
>  obj-$(CONFIG_MMC_SDHCI_TEGRA)		+= sdhci-tegra.o
>  obj-$(CONFIG_MMC_SDHCI_OF_ESDHC)	+= sdhci-of-esdhc.o
>  obj-$(CONFIG_MMC_SDHCI_OF_HLWD)		+= sdhci-of-hlwd.o
> +obj-$(CONFIG_MMC_SDHCI_OF_476GTR)	+= sdhci-of-476gtr.o
>  obj-$(CONFIG_MMC_SDHCI_BCM_KONA)	+= sdhci-bcm-kona.o
>  obj-$(CONFIG_MMC_SDHCI_BCM2835)		+= sdhci-bcm2835.o
> 
> diff --git a/drivers/mmc/host/sdhci-of-476gtr.c
> b/drivers/mmc/host/sdhci-of-476gtr.c new file mode 100644
> index 0000000..1310f8c
> --- /dev/null
> +++ b/drivers/mmc/host/sdhci-of-476gtr.c
> @@ -0,0 +1,60 @@
> +/*
> + * drivers/mmc/host/sdhci-of-476gtr.c
> + *
> + * Copyright © 2013 Alistair Popple <alistair@popple.id.au> IBM Corporation
> + *
> + * Based on sdhci-of-hlwd.c
> + *
> + * Copyright (C) 2009 The GameCube Linux Team
> + * Copyright (C) 2009 Albert Herranz
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License, or (at
> + * your option) any later version.
> + */
> +
> +#include <linux/delay.h>
> +#include <linux/module.h>
> +#include <linux/mmc/host.h>
> +#include "sdhci-pltfm.h"
> +
> +static const struct sdhci_ops sdhci_476gtr_ops = {
> +};
> +
> +static const struct sdhci_pltfm_data sdhci_476gtr_pdata = {
> +	.ops = &sdhci_476gtr_ops,
> +};
> +
> +static int sdhci_476gtr_probe(struct platform_device *pdev)
> +{
> +	return sdhci_pltfm_register(pdev, &sdhci_476gtr_pdata, 0);
> +}
> +
> +static int sdhci_476gtr_remove(struct platform_device *pdev)
> +{
> +	return sdhci_pltfm_unregister(pdev);
> +}
> +
> +static const struct of_device_id sdhci_476gtr_of_match[] = {
> +	{ .compatible = "ibm,476gtr-sdhci" },
> +	{ }
> +};
> +MODULE_DEVICE_TABLE(of, sdhci_476gtr_of_match);
> +
> +static struct platform_driver sdhci_476gtr_driver = {
> +	.driver = {
> +		.name = "sdhci-476gtr",
> +		.owner = THIS_MODULE,
> +		.of_match_table = sdhci_476gtr_of_match,
> +		.pm = SDHCI_PLTFM_PMOPS,
> +	},
> +	.probe = sdhci_476gtr_probe,
> +	.remove = sdhci_476gtr_remove,
> +};
> +
> +module_platform_driver(sdhci_476gtr_driver);
> +
> +MODULE_DESCRIPTION("PPC476GTR SDHCI OF driver");
> +MODULE_AUTHOR("Alistair Popple");
> +MODULE_LICENSE("GPL v2");