From 6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Thu, 20 Oct 2011 16:01:29 +0000 Subject: mx31: Introduce mx31_set_gpr function Introduce mx31_set_gpr function for setting the GPR (General Purpose Register) on MX31. This function can be useful for setting a group of pins into tied to some specific peripherals. Reuse this function from the linux kernel. Signed-off-by: Fabio Estevam --- arch/arm/cpu/arm1136/mx31/generic.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'arch/arm/cpu/arm1136') diff --git a/arch/arm/cpu/arm1136/mx31/generic.c b/arch/arm/cpu/arm1136/mx31/generic.c index 78df7b9..4f27e25 100644 --- a/arch/arm/cpu/arm1136/mx31/generic.c +++ b/arch/arm/cpu/arm1136/mx31/generic.c @@ -27,6 +27,8 @@ #include #include +#define IOMUXGPR (IOMUXC_BASE + 0x008) + static u32 mx31_decode_pll(u32 reg, u32 infreq) { u32 mfi = GET_PLL_MFI(reg); @@ -141,6 +143,19 @@ void mx31_set_pad(enum iomux_pins pin, u32 config) } +void mx31_set_gpr(enum iomux_gp_func gp, char en) +{ + u32 l; + + l = readl(IOMUXGPR); + if (en) + l |= gp; + else + l &= ~gp; + + writel(l, IOMUXGPR); +} + void mxc_setup_weimcs(int cs, const struct mxc_weimcs *weimcs) { struct mx31_weim *weim = (struct mx31_weim *) WEIM_BASE; -- cgit v1.1