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/*
* Copyright (c) 2008, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <boot/boot.h>
#include <msm7k/vic.h>
#include <msm7k/irqs.h>
extern irq_handler irq_vector_table[NR_IRQS];
void unknown_handler(unsigned n)
{
dprintf("unsolicited irq #%d\n", n);
for(;;);
}
void irq_init(void)
{
unsigned n;
for(n = 0; n < NR_IRQS; n++) {
irq_vector_table[n] = unknown_handler;
}
/* select level interrupts */
writel(0, VIC_INT_TYPE0);
writel(0, VIC_INT_TYPE1);
/* select IRQ for all INTs */
writel(0, VIC_INT_SELECT0);
writel(0, VIC_INT_SELECT1);
/* clear interrupts */
writel(0xffffffff, VIC_INT_CLEAR0);
writel(0xffffffff, VIC_INT_CLEAR1);
/* disable all INTs */
writel(0, VIC_INT_EN0);
writel(0, VIC_INT_EN1);
/* don't use 1136 vic */
writel(0, VIC_CONFIG);
writel(1, VIC_INT_MASTEREN);
/* enable IRQs */
enable_irq();
(void) readl(VIC_IRQ_VEC_RD);
}
void irq_unmask(unsigned n)
{
unsigned reg, bit;
reg = n > 31 ? VIC_INT_EN1 : VIC_INT_EN0;
bit = 1 << (n & 31);
writel(readl(reg) | bit, reg);
}
void irq_mask(unsigned n)
{
unsigned reg, bit;
reg = n > 31 ? VIC_INT_ENCLEAR1 : VIC_INT_ENCLEAR0;
bit = 1 << (n & 31);
writel(bit, reg);
}
void irq_install(unsigned n, irq_handler func, int edge)
{
unsigned reg, bit, tmp;
reg = n > 31 ? VIC_INT_TYPE1 : VIC_INT_TYPE0;
bit = 1 << (n & 31);
tmp = readl(reg);
if(edge) {
writel(tmp | bit, reg);
} else {
writel(tmp & (~bit), reg);
}
irq_vector_table[n] = func;
}
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