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

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Submitter Jaehoon Chung
Date Oct. 16, 2012, 5:10 a.m.
Message ID <507CEC47.7030203@samsung.com>
Download mbox | patch
Permalink /patch/191723/
State Accepted, archived
Delegated to: Andy Fleming
Headers show

Comments

Jaehoon Chung - Oct. 16, 2012, 5:10 a.m.
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
Jaehoon Chung - Oct. 23, 2012, 10:02 a.m.
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;
> +}
> +
>
Minkyu Kang - Oct. 23, 2012, 11:11 a.m.
Dear Jaehoon and Andy,

On 23 October 2012 19:02, Jaehoon Chung <jh80.chung@samsung.com> wrote:
> 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?
>

This patch have dependency of dw-mmc patch. (because of Makefile)
It should be merged to Andy's tree.

Andy,
I've delegate this patch to you.
http://patchwork.ozlabs.org/patch/191723/
Please check.

Thanks.
Minkyu Kang.
Jaehoon Chung - Nov. 22, 2012, 4:04 a.m.
Dear Andy,

Do you have any opinion about this patch?
If you didn't have any others, could you apply this patch at u-boot-mmc repository?

Best Regards,
Jaehoon Chung

On 10/23/2012 08:11 PM, Minkyu Kang wrote:
> Dear Jaehoon and Andy,
> 
> On 23 October 2012 19:02, Jaehoon Chung <jh80.chung@samsung.com> wrote:
>> 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?
>>
> 
> This patch have dependency of dw-mmc patch. (because of Makefile)
> It should be merged to Andy's tree.
> 
> Andy,
> I've delegate this patch to you.
> http://patchwork.ozlabs.org/patch/191723/
> Please check.
> 
> Thanks.
> Minkyu Kang.
>
Andy Fleming - Nov. 22, 2012, 4:19 a.m.
I got buried in other work. I should get to this by the end of the week

On Nov 21, 2012, at 22:04, "Jaehoon Chung" <jh80.chung@samsung.com> wrote:

> Dear Andy,
> 
> Do you have any opinion about this patch?
> If you didn't have any others, could you apply this patch at u-boot-mmc repository?
> 
> Best Regards,
> Jaehoon Chung
> 
> On 10/23/2012 08:11 PM, Minkyu Kang wrote:
>> Dear Jaehoon and Andy,
>> 
>> On 23 October 2012 19:02, Jaehoon Chung <jh80.chung@samsung.com> wrote:
>>> 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?
>> 
>> This patch have dependency of dw-mmc patch. (because of Makefile)
>> It should be merged to Andy's tree.
>> 
>> Andy,
>> I've delegate this patch to you.
>> http://patchwork.ozlabs.org/patch/191723/
>> Please check.
>> 
>> Thanks.
>> Minkyu Kang.
> 
>

Patch

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;
+}
+