[U-Boot] [PATCH v3 2/2] EXYNOS: mmc: support DesignWare Controller for Samsung-SoC

[Jaehoon Chung]

Dear, Mr.Kang

Could you merge this patch?
This patch is samsung specific file.
DesignWare controller has merged at u-boot-mmc repository.
If Mr.Kang can't merge this, could Andy merge this?

Best Regards,
Jaehoon Chung
On 10/16/2012 02:10 PM, Jaehoon Chung wrote:
> Support DesignWare MMC Controller for Samsung Specific.
> 
> Signed-off-by: Jaehoon Chung <jh80.chung at samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> Signed-off-by: Rajeshawari Shinde <rajeshwari.s at samsung.com>
> ---
> Changelog V3:
> 	- Removed the unnecessary code.
> Changelog V2:
> 	- Nothing
> ---
>  arch/arm/include/asm/arch-exynos/dwmmc.h |   36 +++++++++++++++++++
>  drivers/mmc/Makefile                     |    1 +
>  drivers/mmc/exynos_dw_mmc.c              |   57 ++++++++++++++++++++++++++++++
>  3 files changed, 94 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/include/asm/arch-exynos/dwmmc.h
>  create mode 100644 drivers/mmc/exynos_dw_mmc.c
> 
> diff --git a/arch/arm/include/asm/arch-exynos/dwmmc.h b/arch/arm/include/asm/arch-exynos/dwmmc.h
> new file mode 100644
> index 0000000..8acdf9b
> --- /dev/null
> +++ b/arch/arm/include/asm/arch-exynos/dwmmc.h
> @@ -0,0 +1,36 @@
> +/*
> + * (C) Copyright 2012 SAMSUNG Electronics
> + * Jaehoon Chung <jh80.chung at samsung.com>
> + *
> + * 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.
> + *
> + * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
> + *
> + */
> +
> +#define DWMCI_CLKSEL		0x09C
> +#define DWMCI_SHIFT_0		0x0
> +#define DWMCI_SHIFT_1		0x1
> +#define DWMCI_SHIFT_2		0x2
> +#define DWMCI_SHIFT_3		0x3
> +#define DWMCI_SET_SAMPLE_CLK(x)	(x)
> +#define DWMCI_SET_DRV_CLK(x)	((x) << 16)
> +#define DWMCI_SET_DIV_RATIO(x)	((x) << 24)
> +
> +int exynos_dwmci_init(u32 regbase, int bus_width, int index);
> +
> +static inline unsigned int exynos_dwmmc_init(int index, int bus_width)
> +{
> +	unsigned int base = samsung_get_base_mmc() + (0x10000 * index);
> +	return exynos_dwmci_init(base, bus_width, index);
> +}
> diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
> index 9ef82a6..cb7c7f6 100644
> --- a/drivers/mmc/Makefile
> +++ b/drivers/mmc/Makefile
> @@ -48,6 +48,7 @@ COBJS-$(CONFIG_S5P_SDHCI) += s5p_sdhci.o
>  COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o
>  COBJS-$(CONFIG_TEGRA_MMC) += tegra_mmc.o
>  COBJS-$(CONFIG_DWMMC) += dw_mmc.o
> +COBJS-$(CONFIG_EXYNOS_DWMMC) += exynos_dw_mmc.o
>  
>  COBJS	:= $(COBJS-y)
>  SRCS	:= $(COBJS:.o=.c)
> diff --git a/drivers/mmc/exynos_dw_mmc.c b/drivers/mmc/exynos_dw_mmc.c
> new file mode 100644
> index 0000000..72a31b7
> --- /dev/null
> +++ b/drivers/mmc/exynos_dw_mmc.c
> @@ -0,0 +1,57 @@
> +/*
> + * (C) Copyright 2012 SAMSUNG Electronics
> + * Jaehoon Chung <jh80.chung at samsung.com>
> + *
> + * 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.
> + *
> + * 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., 59 Temple Place, Suite 330, Boston,  MA 02111-1307 USA
> + *
> + */
> +
> +#include <common.h>
> +#include <malloc.h>
> +#include <dwmmc.h>
> +#include <asm/arch/dwmmc.h>
> +#include <asm/arch/clk.h>
> +
> +static char *EXYNOS_NAME = "EXYNOS DWMMC";
> +
> +static void exynos_dwmci_clksel(struct dwmci_host *host)
> +{
> +	u32 val;
> +	val = DWMCI_SET_SAMPLE_CLK(DWMCI_SHIFT_0) |
> +		DWMCI_SET_DRV_CLK(DWMCI_SHIFT_0) | DWMCI_SET_DIV_RATIO(0);
> +
> +	dwmci_writel(host, DWMCI_CLKSEL, val);
> +}
> +
> +int exynos_dwmci_init(u32 regbase, int bus_width, int index)
> +{
> +	struct dwmci_host *host = NULL;
> +	host = malloc(sizeof(struct dwmci_host));
> +	if (!host) {
> +		printf("dwmci_host malloc fail!\n");
> +		return 1;
> +	}
> +
> +	host->name = EXYNOS_NAME;
> +	host->ioaddr = (void *)regbase;
> +	host->buswidth = bus_width;
> +	host->clksel = exynos_dwmci_clksel;
> +	host->dev_index = index;
> +
> +	add_dwmci(host, 52000000, 400000);
> +
> +	return 0;
> +}
> +
>