[U-Boot] [PATCH 3/8 V2] EXYNOS: PINMUX: Add pinmux support for I2C

[Simon Glass]

On Wed, Jun 6, 2012 at 11:09 PM, Rajeshwari Shinde <rajeshwari.s at samsung.com
> wrote:

> This patch adds pinmux code for I2C.
>
> Signed-off-by: Rajeshwari Shinde <rajeshwari.s at samsung.com>
> Acked-by: Simon Glass <sjg at chromium.org>
> ---
> Changes in V2:
>        - Aligned the pinmux functionality as per the latest comments.
>

Acked-by: Simon Glass <sjg at chromium.org>


> This patch depends on the following patch:
> "[U-Boot] [PATCH 1/2 V6] EXYNOS5: PINMUX: Added default pinumx settings"
>  arch/arm/cpu/armv7/exynos/pinmux.c        |   52
> +++++++++++++++++++++++++++++
>  arch/arm/include/asm/arch-exynos/periph.h |    8 ++++
>  2 files changed, 60 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c
> b/arch/arm/cpu/armv7/exynos/pinmux.c
> index 597e487..d3314a1 100644
> --- a/arch/arm/cpu/armv7/exynos/pinmux.c
> +++ b/arch/arm/cpu/armv7/exynos/pinmux.c
> @@ -182,6 +182,48 @@ static void exynos5_sromc_config(int flags)
>        }
>  }
>
> +static void exynos5_i2c_config(int peripheral, int flags)
> +{
> +
> +       struct exynos5_gpio_part1 *gpio1 =
> +               (struct exynos5_gpio_part1 *)
> samsung_get_base_gpio_part1();
> +
> +       switch (peripheral) {
> +       case PERIPH_ID_I2C0:
> +               s5p_gpio_cfg_pin(&gpio1->b3, 0, GPIO_FUNC(0x2));
> +               s5p_gpio_cfg_pin(&gpio1->b3, 1, GPIO_FUNC(0x2));
> +               break;
> +       case PERIPH_ID_I2C1:
> +               s5p_gpio_cfg_pin(&gpio1->b3, 2, GPIO_FUNC(0x2));
> +               s5p_gpio_cfg_pin(&gpio1->b3, 3, GPIO_FUNC(0x2));
> +               break;
> +       case PERIPH_ID_I2C2:
> +               s5p_gpio_cfg_pin(&gpio1->a0, 6, GPIO_FUNC(0x3));
> +               s5p_gpio_cfg_pin(&gpio1->a0, 7, GPIO_FUNC(0x3));
> +               break;
> +       case PERIPH_ID_I2C3:
> +               s5p_gpio_cfg_pin(&gpio1->a1, 2, GPIO_FUNC(0x3));
> +               s5p_gpio_cfg_pin(&gpio1->a1, 3, GPIO_FUNC(0x3));
> +               break;
> +       case PERIPH_ID_I2C4:
> +               s5p_gpio_cfg_pin(&gpio1->a2, 0, GPIO_FUNC(0x3));
> +               s5p_gpio_cfg_pin(&gpio1->a2, 1, GPIO_FUNC(0x3));
> +               break;
> +       case PERIPH_ID_I2C5:
> +               s5p_gpio_cfg_pin(&gpio1->a2, 2, GPIO_FUNC(0x3));
> +               s5p_gpio_cfg_pin(&gpio1->a2, 3, GPIO_FUNC(0x3));
> +               break;
> +       case PERIPH_ID_I2C6:
> +               s5p_gpio_cfg_pin(&gpio1->b1, 3, GPIO_FUNC(0x4));
> +               s5p_gpio_cfg_pin(&gpio1->b1, 4, GPIO_FUNC(0x4));
> +               break;
> +       case PERIPH_ID_I2C7:
> +               s5p_gpio_cfg_pin(&gpio1->b2, 2, GPIO_FUNC(0x3));
> +               s5p_gpio_cfg_pin(&gpio1->b2, 3, GPIO_FUNC(0x3));
> +               break;
> +       }
> +}
> +
>  static int exynos5_pinmux_config(int peripheral, int flags)
>  {
>        switch (peripheral) {
> @@ -200,6 +242,16 @@ static int exynos5_pinmux_config(int peripheral, int
> flags)
>        case PERIPH_ID_SROMC:
>                exynos5_sromc_config(flags);
>                break;
> +       case PERIPH_ID_I2C0:
> +       case PERIPH_ID_I2C1:
> +       case PERIPH_ID_I2C2:
> +       case PERIPH_ID_I2C3:
> +       case PERIPH_ID_I2C4:
> +       case PERIPH_ID_I2C5:
> +       case PERIPH_ID_I2C6:
> +       case PERIPH_ID_I2C7:
> +               exynos5_i2c_config(peripheral, flags);
> +               break;
>        default:
>                debug("%s: invalid peripheral %d", __func__, peripheral);
>                return -1;
> diff --git a/arch/arm/include/asm/arch-exynos/periph.h
> b/arch/arm/include/asm/arch-exynos/periph.h
> index 5db25aa..b861d7d 100644
> --- a/arch/arm/include/asm/arch-exynos/periph.h
> +++ b/arch/arm/include/asm/arch-exynos/periph.h
> @@ -30,6 +30,14 @@
>  *
>  */
>  enum periph_id {
> +       PERIPH_ID_I2C0,
> +       PERIPH_ID_I2C1,
> +       PERIPH_ID_I2C2,
> +       PERIPH_ID_I2C3,
> +       PERIPH_ID_I2C4,
> +       PERIPH_ID_I2C5,
> +       PERIPH_ID_I2C6,
> +       PERIPH_ID_I2C7,
>        PERIPH_ID_SDMMC0,
>        PERIPH_ID_SDMMC1,
>        PERIPH_ID_SDMMC2,
> --
> 1.7.4.4
>
>