This patch adds pinmux code for I2C.
Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com Acked-by: Simon Glass sjg@chromium.org --- Changes in V2: - Aligned the pinmux functionality as per the latest comments. Changes in V3: - None Changes in V4: - None Changes in V5: - None 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 822410e..e90ad6a 100644 --- a/arch/arm/cpu/armv7/exynos/pinmux.c +++ b/arch/arm/cpu/armv7/exynos/pinmux.c @@ -188,6 +188,48 @@ 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) { @@ -205,6 +247,16 @@ 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,