[PATCH v4 1/2] MMC: add support for the Marvell Dove SDHCI controller

[saeed bishara]

On Thu, Oct 28, 2010 at 9:23 PM, Mike Rapoport <mike at compulab.co.il> wrote:
> Implement an sdhci-pltfm driver for the controller found on Marvell
> Dove SoC
>
> Signed-off-by: Mike Rapoport <mike at compulab.co.il>
> CC: Saeed Bishara <saeed at marvell.com>
Acked-by: Saeed Bishara <saeed at marvell.com>
> ---
>  drivers/mmc/host/Kconfig       |   13 +++++++
>  drivers/mmc/host/Makefile      |    1 +
>  drivers/mmc/host/sdhci-dove.c  |   70 ++++++++++++++++++++++++++++++++++++++++
>  drivers/mmc/host/sdhci-pltfm.c |    3 ++
>  drivers/mmc/host/sdhci-pltfm.h |    1 +
>  5 files changed, 88 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/mmc/host/sdhci-dove.c
>
> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
> index 68d1279..4958839 100644
> --- a/drivers/mmc/host/Kconfig
> +++ b/drivers/mmc/host/Kconfig
> @@ -130,6 +130,19 @@ config MMC_SDHCI_CNS3XXX
>
>          If unsure, say N.
>
> +config MMC_SDHCI_DOVE
> +       bool "SDHCI support on Marvell's Dove SoC"
> +       depends on ARCH_DOVE
> +       depends on MMC_SDHCI_PLTFM
> +       select MMC_SDHCI_IO_ACCESSORS
> +       help
> +         This selects the Secure Digital Host Controller Interface in
> +         Marvell's Dove SoC.
> +
> +         If you have a controller with this interface, say Y or M here.
> +
> +         If unsure, say N.
> +
>  config MMC_SDHCI_S3C
>        tristate "SDHCI support on Samsung S3C SoC"
>        depends on MMC_SDHCI && PLAT_SAMSUNG
> diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
> index 840bcb5..9e1c418 100644
> --- a/drivers/mmc/host/Makefile
> +++ b/drivers/mmc/host/Makefile
> @@ -40,6 +40,7 @@ obj-$(CONFIG_MMC_JZ4740)      += jz4740_mmc.o
>  obj-$(CONFIG_MMC_SDHCI_PLTFM)                  += sdhci-platform.o
>  sdhci-platform-y                               := sdhci-pltfm.o
>  sdhci-platform-$(CONFIG_MMC_SDHCI_CNS3XXX)     += sdhci-cns3xxx.o
> +sdhci-platform-$(CONFIG_MMC_SDHCI_DOVE)                += sdhci-dove.o
>
>  obj-$(CONFIG_MMC_SDHCI_OF)     += sdhci-of.o
>  sdhci-of-y                             := sdhci-of-core.o
> diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c
> new file mode 100644
> index 0000000..561167c
> --- /dev/null
> +++ b/drivers/mmc/host/sdhci-dove.c
> @@ -0,0 +1,70 @@
> +/*
> + * sdhci-dove.c Support for SDHCI on Marvell's Dove SoC
> + *
> + * Author: Saeed Bishara <saeed at marvell.com>
> + *        Mike Rapoport <mike at compulab.co.il>
> + * Based on  sdhci-cns3xxx.c
> + *
> + * 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.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
> + */
> +
> +#include <linux/io.h>
> +#include <linux/mmc/host.h>
> +
> +#include "sdhci.h"
> +#include "sdhci-pltfm.h"
> +
> +static u16 sdhci_dove_readw(struct sdhci_host *host, int reg)
> +{
> +       u16 ret;
> +
> +       switch (reg) {
> +       case SDHCI_HOST_VERSION:
> +       case SDHCI_SLOT_INT_STATUS:
> +               /* those registers don't exist */
> +               return 0;
> +       default:
> +               ret = readw(host->ioaddr + reg);
> +       }
> +       return ret;
> +}
> +
> +static u32 sdhci_dove_readl(struct sdhci_host *host, int reg)
> +{
> +       u32 ret;
> +
> +       switch (reg) {
> +       case SDHCI_CAPABILITIES:
> +               ret = readl(host->ioaddr + reg);
> +               /* Mask the support for 3.0V */
> +               ret &= ~SDHCI_CAN_VDD_300;
> +               break;
> +       default:
> +               ret = readl(host->ioaddr + reg);
> +       }
> +       return ret;
> +}
> +
> +static struct sdhci_ops sdhci_dove_ops = {
> +       .read_w = sdhci_dove_readw,
> +       .read_l = sdhci_dove_readl,
> +};
> +
> +struct sdhci_pltfm_data sdhci_dove_pdata = {
> +       .ops    = &sdhci_dove_ops,
> +       .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
> +                 SDHCI_QUIRK_NO_BUSY_IRQ |
> +                 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
> +                 SDHCI_QUIRK_FORCE_DMA,
> +};
> diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
> index e045e3c..28d818e 100644
> --- a/drivers/mmc/host/sdhci-pltfm.c
> +++ b/drivers/mmc/host/sdhci-pltfm.c
> @@ -161,6 +161,9 @@ static const struct platform_device_id sdhci_pltfm_ids[] = {
>  #ifdef CONFIG_MMC_SDHCI_CNS3XXX
>        { "sdhci-cns3xxx", (kernel_ulong_t)&sdhci_cns3xxx_pdata },
>  #endif
> +#ifdef CONFIG_MMC_SDHCI_DOVE
> +       { "sdhci-dove", (kernel_ulong_t)&sdhci_dove_pdata },
> +#endif
>        { },
>  };
>  MODULE_DEVICE_TABLE(platform, sdhci_pltfm_ids);
> diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h
> index 900f329..718d837 100644
> --- a/drivers/mmc/host/sdhci-pltfm.h
> +++ b/drivers/mmc/host/sdhci-pltfm.h
> @@ -14,5 +14,6 @@
>  #include <linux/sdhci-pltfm.h>
>
>  extern struct sdhci_pltfm_data sdhci_cns3xxx_pdata;
> +extern struct sdhci_pltfm_data sdhci_dove_pdata;
>
>  #endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */
> --
> 1.7.3.1
>
> --
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