diff options
Diffstat (limited to 'arch/arm/plat-mxc/iomux-mx1-mx2.c')
| -rw-r--r-- | arch/arm/plat-mxc/iomux-mx1-mx2.c | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/arch/arm/plat-mxc/iomux-mx1-mx2.c b/arch/arm/plat-mxc/iomux-mx1-mx2.c deleted file mode 100644 index a37163ce280..00000000000 --- a/arch/arm/plat-mxc/iomux-mx1-mx2.c +++ /dev/null @@ -1,157 +0,0 @@ -/* - * arch/arm/mach-mxc/generic.c - * - * author: Sascha Hauer - * Created: april 20th, 2004 - * Copyright: Synertronixx GmbH - * - * Common code for i.MX machines - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <linux/errno.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/gpio.h> - -#include <mach/hardware.h> -#include <asm/mach/map.h> -#include <mach/iomux.h> - -void mxc_gpio_mode(int gpio_mode) -{ - unsigned int pin = gpio_mode & GPIO_PIN_MASK; - unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT; - unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> GPIO_OCR_SHIFT; - unsigned int tmp; - - /* Pullup enable */ - tmp = __raw_readl(VA_GPIO_BASE + MXC_PUEN(port)); - if (gpio_mode & GPIO_PUEN) - tmp |= (1 << pin); - else - tmp &= ~(1 << pin); - __raw_writel(tmp, VA_GPIO_BASE + MXC_PUEN(port)); - - /* Data direction */ - tmp = __raw_readl(VA_GPIO_BASE + MXC_DDIR(port)); - if (gpio_mode & GPIO_OUT) - tmp |= 1 << pin; - else - tmp &= ~(1 << pin); - __raw_writel(tmp, VA_GPIO_BASE + MXC_DDIR(port)); - - /* Primary / alternate function */ - tmp = __raw_readl(VA_GPIO_BASE + MXC_GPR(port)); - if (gpio_mode & GPIO_AF) - tmp |= (1 << pin); - else - tmp &= ~(1 << pin); - __raw_writel(tmp, VA_GPIO_BASE + MXC_GPR(port)); - - /* use as gpio? */ - tmp = __raw_readl(VA_GPIO_BASE + MXC_GIUS(port)); - if (gpio_mode & (GPIO_PF | GPIO_AF)) - tmp &= ~(1 << pin); - else - tmp |= (1 << pin); - __raw_writel(tmp, VA_GPIO_BASE + MXC_GIUS(port)); - - if (pin < 16) { - tmp = __raw_readl(VA_GPIO_BASE + MXC_OCR1(port)); - tmp &= ~(3 << (pin * 2)); - tmp |= (ocr << (pin * 2)); - __raw_writel(tmp, VA_GPIO_BASE + MXC_OCR1(port)); - - tmp = __raw_readl(VA_GPIO_BASE + MXC_ICONFA1(port)); - tmp &= ~(3 << (pin * 2)); - tmp |= ((gpio_mode >> GPIO_AOUT_SHIFT) & 3) << (pin * 2); - __raw_writel(tmp, VA_GPIO_BASE + MXC_ICONFA1(port)); - - tmp = __raw_readl(VA_GPIO_BASE + MXC_ICONFB1(port)); - tmp &= ~(3 << (pin * 2)); - tmp |= ((gpio_mode >> GPIO_BOUT_SHIFT) & 3) << (pin * 2); - __raw_writel(tmp, VA_GPIO_BASE + MXC_ICONFB1(port)); - } else { - pin -= 16; - - tmp = __raw_readl(VA_GPIO_BASE + MXC_OCR2(port)); - tmp &= ~(3 << (pin * 2)); - tmp |= (ocr << (pin * 2)); - __raw_writel(tmp, VA_GPIO_BASE + MXC_OCR2(port)); - - tmp = __raw_readl(VA_GPIO_BASE + MXC_ICONFA2(port)); - tmp &= ~(3 << (pin * 2)); - tmp |= ((gpio_mode >> GPIO_AOUT_SHIFT) & 3) << (pin * 2); - __raw_writel(tmp, VA_GPIO_BASE + MXC_ICONFA2(port)); - - tmp = __raw_readl(VA_GPIO_BASE + MXC_ICONFB2(port)); - tmp &= ~(3 << (pin * 2)); - tmp |= ((gpio_mode >> GPIO_BOUT_SHIFT) & 3) << (pin * 2); - __raw_writel(tmp, VA_GPIO_BASE + MXC_ICONFB2(port)); - } -} -EXPORT_SYMBOL(mxc_gpio_mode); - -int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count, - const char *label) -{ - const int *p = pin_list; - int i; - unsigned gpio; - unsigned mode; - int ret = -EINVAL; - - for (i = 0; i < count; i++) { - gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); - mode = *p & ~(GPIO_PIN_MASK | GPIO_PORT_MASK); - - if (gpio >= (GPIO_PORT_MAX + 1) * 32) - goto setup_error; - - ret = gpio_request(gpio, label); - if (ret) - goto setup_error; - - mxc_gpio_mode(gpio | mode); - - p++; - } - return 0; - -setup_error: - mxc_gpio_release_multiple_pins(pin_list, i); - return ret; -} -EXPORT_SYMBOL(mxc_gpio_setup_multiple_pins); - -void mxc_gpio_release_multiple_pins(const int *pin_list, int count) -{ - const int *p = pin_list; - int i; - - for (i = 0; i < count; i++) { - unsigned gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); - gpio_free(gpio); - p++; - } - -} -EXPORT_SYMBOL(mxc_gpio_release_multiple_pins); - |