diff options
Diffstat (limited to 'arch/arm/mach-imx/generic.c')
| -rw-r--r-- | arch/arm/mach-imx/generic.c | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/arch/arm/mach-imx/generic.c b/arch/arm/mach-imx/generic.c deleted file mode 100644 index 05f1739..0000000 --- a/arch/arm/mach-imx/generic.c +++ /dev/null @@ -1,271 +0,0 @@ -/* - * arch/arm/mach-imx/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/platform_device.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/string.h> - -#include <asm/errno.h> -#include <mach/hardware.h> -#include <mach/imx-regs.h> - -#include <asm/mach/map.h> -#include <mach/mmc.h> -#include <mach/gpio.h> - -unsigned long imx_gpio_alloc_map[(GPIO_PORT_MAX + 1) * 32 / BITS_PER_LONG]; - -void imx_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 */ - if(gpio_mode & GPIO_PUEN) - PUEN(port) |= (1<<pin); - else - PUEN(port) &= ~(1<<pin); - - /* Data direction */ - if(gpio_mode & GPIO_OUT) - DDIR(port) |= 1<<pin; - else - DDIR(port) &= ~(1<<pin); - - /* Primary / alternate function */ - if(gpio_mode & GPIO_AF) - GPR(port) |= (1<<pin); - else - GPR(port) &= ~(1<<pin); - - /* use as gpio? */ - if(gpio_mode & GPIO_GIUS) - GIUS(port) |= (1<<pin); - else - GIUS(port) &= ~(1<<pin); - - /* Output / input configuration */ - /* FIXME: I'm not very sure about OCR and ICONF, someone - * should have a look over it - */ - if(pin<16) { - tmp = OCR1(port); - tmp &= ~( 3<<(pin*2)); - tmp |= (ocr << (pin*2)); - OCR1(port) = tmp; - - ICONFA1(port) &= ~( 3<<(pin*2)); - ICONFA1(port) |= ((gpio_mode >> GPIO_AOUT_SHIFT) & 3) << (pin * 2); - ICONFB1(port) &= ~( 3<<(pin*2)); - ICONFB1(port) |= ((gpio_mode >> GPIO_BOUT_SHIFT) & 3) << (pin * 2); - } else { - tmp = OCR2(port); - tmp &= ~( 3<<((pin-16)*2)); - tmp |= (ocr << ((pin-16)*2)); - OCR2(port) = tmp; - - ICONFA2(port) &= ~( 3<<((pin-16)*2)); - ICONFA2(port) |= ((gpio_mode >> GPIO_AOUT_SHIFT) & 3) << ((pin-16) * 2); - ICONFB2(port) &= ~( 3<<((pin-16)*2)); - ICONFB2(port) |= ((gpio_mode >> GPIO_BOUT_SHIFT) & 3) << ((pin-16) * 2); - } -} - -EXPORT_SYMBOL(imx_gpio_mode); - -int imx_gpio_request(unsigned gpio, const char *label) -{ - if(gpio >= (GPIO_PORT_MAX + 1) * 32) { - printk(KERN_ERR "imx_gpio: Attempt to request nonexistent GPIO %d for \"%s\"\n", - gpio, label ? label : "?"); - return -EINVAL; - } - - if(test_and_set_bit(gpio, imx_gpio_alloc_map)) { - printk(KERN_ERR "imx_gpio: GPIO %d already used. Allocation for \"%s\" failed\n", - gpio, label ? label : "?"); - return -EBUSY; - } - - return 0; -} - -EXPORT_SYMBOL(imx_gpio_request); - -void imx_gpio_free(unsigned gpio) -{ - if(gpio >= (GPIO_PORT_MAX + 1) * 32) - return; - - clear_bit(gpio, imx_gpio_alloc_map); -} - -EXPORT_SYMBOL(imx_gpio_free); - -int imx_gpio_direction_input(unsigned gpio) -{ - imx_gpio_mode(gpio | GPIO_IN | GPIO_GIUS | GPIO_DR); - return 0; -} - -EXPORT_SYMBOL(imx_gpio_direction_input); - -int imx_gpio_direction_output(unsigned gpio, int value) -{ - imx_gpio_set_value(gpio, value); - imx_gpio_mode(gpio | GPIO_OUT | GPIO_GIUS | GPIO_DR); - return 0; -} - -EXPORT_SYMBOL(imx_gpio_direction_output); - -int imx_gpio_setup_multiple_pins(const int *pin_list, unsigned count, - int alloc_mode, const char *label) -{ - const int *p = pin_list; - int i; - unsigned gpio; - unsigned mode; - - 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; - - if (alloc_mode & IMX_GPIO_ALLOC_MODE_RELEASE) - imx_gpio_free(gpio); - else if (!(alloc_mode & IMX_GPIO_ALLOC_MODE_NO_ALLOC)) - if (imx_gpio_request(gpio, label)) - if (!(alloc_mode & IMX_GPIO_ALLOC_MODE_TRY_ALLOC)) - goto setup_error; - - if (!(alloc_mode & (IMX_GPIO_ALLOC_MODE_ALLOC_ONLY | - IMX_GPIO_ALLOC_MODE_RELEASE))) - imx_gpio_mode(gpio | mode); - - p++; - } - return 0; - -setup_error: - if(alloc_mode & (IMX_GPIO_ALLOC_MODE_NO_ALLOC | - IMX_GPIO_ALLOC_MODE_TRY_ALLOC)) - return -EINVAL; - - while (p != pin_list) { - p--; - gpio = *p & (GPIO_PIN_MASK | GPIO_PORT_MASK); - imx_gpio_free(gpio); - } - - return -EINVAL; -} - -EXPORT_SYMBOL(imx_gpio_setup_multiple_pins); - -void __imx_gpio_set_value(unsigned gpio, int value) -{ - imx_gpio_set_value_inline(gpio, value); -} - -EXPORT_SYMBOL(__imx_gpio_set_value); - -int imx_gpio_to_irq(unsigned gpio) -{ - return IRQ_GPIOA(0) + gpio; -} - -EXPORT_SYMBOL(imx_gpio_to_irq); - -int imx_irq_to_gpio(unsigned irq) -{ - if (irq < IRQ_GPIOA(0)) - return -EINVAL; - return irq - IRQ_GPIOA(0); -} - -EXPORT_SYMBOL(imx_irq_to_gpio); - -static struct resource imx_mmc_resources[] = { - [0] = { - .start = 0x00214000, - .end = 0x002140FF, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = (SDHC_INT), - .end = (SDHC_INT), - .flags = IORESOURCE_IRQ, - }, -}; - -static u64 imxmmmc_dmamask = 0xffffffffUL; - -static struct platform_device imx_mmc_device = { - .name = "imx-mmc", - .id = 0, - .dev = { - .dma_mask = &imxmmmc_dmamask, - .coherent_dma_mask = 0xffffffff, - }, - .num_resources = ARRAY_SIZE(imx_mmc_resources), - .resource = imx_mmc_resources, -}; - -void __init imx_set_mmc_info(struct imxmmc_platform_data *info) -{ - imx_mmc_device.dev.platform_data = info; -} - -static struct platform_device *devices[] __initdata = { - &imx_mmc_device, -}; - -static struct map_desc imx_io_desc[] __initdata = { - { - .virtual = IMX_IO_BASE, - .pfn = __phys_to_pfn(IMX_IO_PHYS), - .length = IMX_IO_SIZE, - .type = MT_DEVICE - } -}; - -void __init -imx_map_io(void) -{ - iotable_init(imx_io_desc, ARRAY_SIZE(imx_io_desc)); -} - -static int __init imx_init(void) -{ - return platform_add_devices(devices, ARRAY_SIZE(devices)); -} - -subsys_initcall(imx_init); |
