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@samsung.com Signed-off-by: Kyungmin Park kyungmin.park@samsung.com Signed-off-by: Rajeshawari Shinde rajeshwari.s@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@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@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;

+}