From d348a943e77ed72dd809cecf03365552545382b2 Mon Sep 17 00:00:00 2001 From: Bhuvanchandra DV Date: Mon, 1 Jun 2015 18:37:16 +0530 Subject: dm: gpio: vf610: Add GPIO driver support Add GPIO driver support to Freescale VF610 Signed-off-by: Bhuvanchandra DV --- arch/arm/imx-common/iomux-v3.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'arch/arm/imx-common') diff --git a/arch/arm/imx-common/iomux-v3.c b/arch/arm/imx-common/iomux-v3.c index e88e6e2a98..7fb23dd027 100644 --- a/arch/arm/imx-common/iomux-v3.c +++ b/arch/arm/imx-common/iomux-v3.c @@ -92,3 +92,29 @@ void imx_iomux_set_gpr_register(int group, int start_bit, reg |= (value << start_bit); writel(reg, base + group * 4); } + +#ifdef CONFIG_IOMUX_SHARE_CONF_REG +void imx_iomux_gpio_set_direction(unsigned int gpio, + unsigned int direction) +{ + u32 reg; + /* + * Only on Vybrid the input/output buffer enable flags + * are part of the shared mux/conf register. + */ + reg = readl(base + (gpio << 2)); + + if (direction) + reg |= 0x2; + else + reg &= ~0x2; + + writel(reg, base + (gpio << 2)); +} + +void imx_iomux_gpio_get_function(unsigned int gpio, u32 *gpio_state) +{ + *gpio_state = readl(base + (gpio << 2)) & + ((0X07 << PAD_MUX_MODE_SHIFT) | PAD_CTL_OBE_IBE_ENABLE); +} +#endif -- cgit v1.2.1