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// SPDX-License-Identifier: GPL-2.0
/*
* Shared SH3 Setup code
*
* Copyright (C) 2008 Magnus Damm
*/
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/io.h>
#include <asm/platform_early.h>
/* All SH3 devices are equipped with IRQ0->5 (except sh7708) */
enum {
UNUSED = 0,
/* interrupt sources */
IRQ0, IRQ1, IRQ2, IRQ3, IRQ4, IRQ5,
};
static struct intc_vect vectors_irq0123[] __initdata = {
INTC_VECT(IRQ0, 0x600), INTC_VECT(IRQ1, 0x620),
INTC_VECT(IRQ2, 0x640), INTC_VECT(IRQ3, 0x660),
};
static struct intc_vect vectors_irq45[] __initdata = {
INTC_VECT(IRQ4, 0x680), INTC_VECT(IRQ5, 0x6a0),
};
static struct intc_prio_reg prio_registers[] __initdata = {
{ 0xa4000016, 0, 16, 4, /* IPRC */ { IRQ3, IRQ2, IRQ1, IRQ0 } },
{ 0xa4000018, 0, 16, 4, /* IPRD */ { 0, 0, IRQ5, IRQ4 } },
};
static struct intc_mask_reg ack_registers[] __initdata = {
{ 0xa4000004, 0, 8, /* IRR0 */
{ 0, 0, IRQ5, IRQ4, IRQ3, IRQ2, IRQ1, IRQ0 } },
};
static struct intc_sense_reg sense_registers[] __initdata = {
{ 0xa4000010, 16, 2, { 0, 0, IRQ5, IRQ4, IRQ3, IRQ2, IRQ1, IRQ0 } },
};
static DECLARE_INTC_DESC_ACK(intc_desc_irq0123, "sh3-irq0123",
vectors_irq0123, NULL, NULL,
prio_registers, sense_registers, ack_registers);
static DECLARE_INTC_DESC_ACK(intc_desc_irq45, "sh3-irq45",
vectors_irq45, NULL, NULL,
prio_registers, sense_registers, ack_registers);
#define INTC_ICR1 0xa4000010UL
#define INTC_ICR1_IRQLVL (1<<14)
void __init plat_irq_setup_pins(int mode)
{
if (mode == IRQ_MODE_IRQ) {
__raw_writew(__raw_readw(INTC_ICR1) & ~INTC_ICR1_IRQLVL, INTC_ICR1);
register_intc_controller(&intc_desc_irq0123);
return;
}
BUG();
}
void __init plat_irq_setup_sh3(void)
{
register_intc_controller(&intc_desc_irq45);
}
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