| /* |
| * 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 <mach/hardware.h> |
| |
| #include <mach/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); |
| } |