0412d6c927
The lack of an include file currently breaks compilation of mx1ads_defconfig. As framebuffer support is not actively used for mach-imx and the whole architecture will be replaced by mach-mx1 soon, just remove fb support. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
272 lines
6.1 KiB
C
272 lines
6.1 KiB
C
/*
|
|
* 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);
|