mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
1.7 KiB
69 lines
1.7 KiB
// 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); |
|
}
|
|
|