/* * DaVinci pin multiplexing configurations * * Author: Vladimir Barinov, MontaVista Software, Inc. <source@mvista.com> * * 2007 (c) MontaVista Software, Inc. This file is licensed under * the terms of the GNU General Public License version 2. This program * is licensed "as is" without any warranty of any kind, whether express * or implied. */ #include <linux/io.h> #include <linux/spinlock.h> #include <asm/hardware.h> #include <asm/arch/mux.h> /* System control register offsets */ #define PINMUX0 0x00 #define PINMUX1 0x04 static DEFINE_SPINLOCK(mux_lock); void davinci_mux_peripheral(unsigned int mux, unsigned int enable) { u32 pinmux, muxreg = PINMUX0; if (mux >= DAVINCI_MUX_LEVEL2) { muxreg = PINMUX1; mux -= DAVINCI_MUX_LEVEL2; } spin_lock(&mux_lock); pinmux = davinci_readl(DAVINCI_SYSTEM_MODULE_BASE + muxreg); if (enable) pinmux |= (1 << mux); else pinmux &= ~(1 << mux); davinci_writel(pinmux, DAVINCI_SYSTEM_MODULE_BASE + muxreg); spin_unlock(&mux_lock); }