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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2011 by Amaury Pouly
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "system.h"
#include "system-target.h"
#include "cpu.h"
#include "string.h"
#include "pinctrl-imx233.h"
#ifdef IMX233_PINCTRL_DEBUG
// 4 banks of 32 pins
static const char *pin_use[4][32];
void imx233_pinctrl_acquire_pin(unsigned bank, unsigned pin, const char *name)
{
if(pin_use[bank][pin] != NULL && pin_use[bank][pin] != name)
panicf("acquire B%dP%02d for %s, was %s!", bank, pin, name, pin_use[bank][pin]);
pin_use[bank][pin] = name;
}
void imx233_pinctrl_acquire_pin_mask(unsigned bank, uint32_t mask, const char *name)
{
for(unsigned pin = 0; pin < 32; pin++)
if(mask & (1 << pin))
imx233_pinctrl_acquire_pin(bank, pin, name);
}
void imx233_pinctrl_release_pin(unsigned bank, unsigned pin, const char *name)
{
if(pin_use[bank][pin] != NULL && pin_use[bank][pin] != name)
panicf("release B%dP%02d for %s: was %s!", bank, pin, name, pin_use[bank][pin]);
pin_use[bank][pin] = NULL;
}
void imx233_pinctrl_release_pin_mask(unsigned bank, uint32_t mask, const char *name)
{
for(unsigned pin = 0; pin < 32; pin++)
if(mask & (1 << pin))
imx233_pinctrl_release_pin(bank, pin, name);
}
const char *imx233_pinctrl_get_pin_use(unsigned bank, unsigned pin)
{
return pin_use[bank][pin];
}
#endif
static pin_irq_cb_t pin_cb[3][32]; /* 3 banks, 32 pins/bank */
static void INT_GPIO(int bank)
{
uint32_t fire = HW_PINCTRL_IRQSTAT(bank) & HW_PINCTRL_IRQEN(bank);
for(int pin = 0; pin < 32; pin++)
if(fire & (1 << pin))
{
pin_irq_cb_t cb = pin_cb[bank][pin];
imx233_setup_pin_irq(bank, pin, false, false, false, NULL);
if(cb)
cb(bank, pin);
}
}
void INT_GPIO0(void)
{
INT_GPIO(0);
}
void INT_GPIO1(void)
{
INT_GPIO(1);
}
void INT_GPIO2(void)
{
INT_GPIO(2);
}
void imx233_setup_pin_irq(int bank, int pin, bool enable_int,
bool level, bool polarity, pin_irq_cb_t cb)
{
__REG_CLR(HW_PINCTRL_PIN2IRQ(bank)) = 1 << pin;
__REG_CLR(HW_PINCTRL_IRQEN(bank)) = 1 << pin;
__REG_CLR(HW_PINCTRL_IRQSTAT(bank))= 1 << pin;
pin_cb[bank][pin] = cb;
if(enable_int)
{
if(level)
__REG_SET(HW_PINCTRL_IRQLEVEL(bank)) = 1 << pin;
else
__REG_CLR(HW_PINCTRL_IRQLEVEL(bank)) = 1 << pin;
if(polarity)
__REG_SET(HW_PINCTRL_IRQPOL(bank)) = 1 << pin;
else
__REG_CLR(HW_PINCTRL_IRQPOL(bank)) = 1 << pin;
__REG_SET(HW_PINCTRL_PIN2IRQ(bank)) = 1 << pin;
__REG_SET(HW_PINCTRL_IRQEN(bank)) = 1 << pin;
imx233_enable_interrupt(INT_SRC_GPIO(bank), true);
}
}
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