diff options
Diffstat (limited to 'arch/arm/mach-mx3/iomux.c')
| -rw-r--r-- | arch/arm/mach-mx3/iomux.c | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/arch/arm/mach-mx3/iomux.c b/arch/arm/mach-mx3/iomux.c deleted file mode 100644 index 7a5088b519a..00000000000 --- a/arch/arm/mach-mx3/iomux.c +++ /dev/null @@ -1,114 +0,0 @@ -/* - * Copyright 2004-2006 Freescale Semiconductor, Inc. All Rights Reserved. - * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - * MA 02110-1301, USA. - */ - -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/io.h> -#include <linux/gpio.h> -#include <mach/hardware.h> -#include <mach/gpio.h> -#include <mach/iomux-mx3.h> - -/* - * IOMUX register (base) addresses - */ -#define IOMUX_BASE IO_ADDRESS(IOMUXC_BASE_ADDR) -#define IOMUXINT_OBS1 (IOMUX_BASE + 0x000) -#define IOMUXINT_OBS2 (IOMUX_BASE + 0x004) -#define IOMUXGPR (IOMUX_BASE + 0x008) -#define IOMUXSW_MUX_CTL (IOMUX_BASE + 0x00C) -#define IOMUXSW_PAD_CTL (IOMUX_BASE + 0x154) - -static DEFINE_SPINLOCK(gpio_mux_lock); - -#define IOMUX_REG_MASK (IOMUX_PADNUM_MASK & ~0x3) -/* - * set the mode for a IOMUX pin. - */ -int mxc_iomux_mode(unsigned int pin_mode) -{ - u32 field, l, mode, ret = 0; - void __iomem *reg; - - reg = IOMUXSW_MUX_CTL + (pin_mode & IOMUX_REG_MASK); - field = pin_mode & 0x3; - mode = (pin_mode & IOMUX_MODE_MASK) >> IOMUX_MODE_SHIFT; - - pr_debug("%s: reg offset = 0x%x field = %d mode = 0x%02x\n", - __func__, (pin_mode & IOMUX_REG_MASK), field, mode); - - spin_lock(&gpio_mux_lock); - - l = __raw_readl(reg); - l &= ~(0xff << (field * 8)); - l |= mode << (field * 8); - __raw_writel(l, reg); - - spin_unlock(&gpio_mux_lock); - - return ret; -} -EXPORT_SYMBOL(mxc_iomux_mode); - -/* - * This function configures the pad value for a IOMUX pin. - */ -void mxc_iomux_set_pad(enum iomux_pins pin, u32 config) -{ - u32 field, l; - void __iomem *reg; - - pin &= IOMUX_PADNUM_MASK; - reg = IOMUXSW_PAD_CTL + (pin + 2) / 3 * 4; - field = (pin + 2) % 3; - - pr_debug("%s: reg offset = 0x%x, field = %d\n", - __func__, (pin + 2) / 3, field); - - spin_lock(&gpio_mux_lock); - - l = __raw_readl(reg); - l &= ~(0x1ff << (field * 10)); - l |= config << (field * 10); - __raw_writel(l, reg); - - spin_unlock(&gpio_mux_lock); -} -EXPORT_SYMBOL(mxc_iomux_set_pad); - -/* - * This function enables/disables the general purpose function for a particular - * signal. - */ -void mxc_iomux_set_gpr(enum iomux_gp_func gp, bool en) -{ - u32 l; - - spin_lock(&gpio_mux_lock); - l = __raw_readl(IOMUXGPR); - if (en) - l |= gp; - else - l &= ~gp; - - __raw_writel(l, IOMUXGPR); - spin_unlock(&gpio_mux_lock); -} -EXPORT_SYMBOL(mxc_iomux_set_gpr); - |