121 lines
2.9 KiB
C
121 lines
2.9 KiB
C
/* arch/arm/mach-lh7a40x/arch-kev7a400.c
|
|
*
|
|
* Copyright (C) 2004 Logic Product Development
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* version 2 as published by the Free Software Foundation.
|
|
*
|
|
*/
|
|
|
|
#include <linux/tty.h>
|
|
#include <linux/init.h>
|
|
#include <linux/device.h>
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <asm/setup.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/mach/irq.h>
|
|
#include <asm/mach/map.h>
|
|
|
|
#include "common.h"
|
|
|
|
/* This function calls the board specific IRQ initialization function. */
|
|
|
|
static struct map_desc kev7a400_io_desc[] __initdata = {
|
|
{
|
|
.virtual = IO_VIRT,
|
|
.pfn = __phys_to_pfn(IO_PHYS),
|
|
.length = IO_SIZE,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = CPLD_VIRT,
|
|
.pfn = __phys_to_pfn(CPLD_PHYS),
|
|
.length = CPLD_SIZE,
|
|
.type = MT_DEVICE
|
|
}
|
|
};
|
|
|
|
void __init kev7a400_map_io(void)
|
|
{
|
|
iotable_init (kev7a400_io_desc, ARRAY_SIZE (kev7a400_io_desc));
|
|
}
|
|
|
|
static u16 CPLD_IRQ_mask; /* Mask for CPLD IRQs, 1 == unmasked */
|
|
|
|
static void kev7a400_ack_cpld_irq (u32 irq)
|
|
{
|
|
CPLD_CL_INT = 1 << (irq - IRQ_KEV7A400_CPLD);
|
|
}
|
|
|
|
static void kev7a400_mask_cpld_irq (u32 irq)
|
|
{
|
|
CPLD_IRQ_mask &= ~(1 << (irq - IRQ_KEV7A400_CPLD));
|
|
CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask;
|
|
}
|
|
|
|
static void kev7a400_unmask_cpld_irq (u32 irq)
|
|
{
|
|
CPLD_IRQ_mask |= 1 << (irq - IRQ_KEV7A400_CPLD);
|
|
CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask;
|
|
}
|
|
|
|
static struct irq_chip kev7a400_cpld_chip = {
|
|
.name = "CPLD",
|
|
.ack = kev7a400_ack_cpld_irq,
|
|
.mask = kev7a400_mask_cpld_irq,
|
|
.unmask = kev7a400_unmask_cpld_irq,
|
|
};
|
|
|
|
|
|
static void kev7a400_cpld_handler (unsigned int irq, struct irq_desc *desc)
|
|
{
|
|
u32 mask = CPLD_LATCHED_INTS;
|
|
irq = IRQ_KEV7A400_CPLD;
|
|
for (; mask; mask >>= 1, ++irq)
|
|
if (mask & 1)
|
|
desc_handle_irq(irq, desc);
|
|
}
|
|
|
|
void __init lh7a40x_init_board_irq (void)
|
|
{
|
|
int irq;
|
|
|
|
for (irq = IRQ_KEV7A400_CPLD;
|
|
irq < IRQ_KEV7A400_CPLD + NR_IRQ_BOARD; ++irq) {
|
|
set_irq_chip (irq, &kev7a400_cpld_chip);
|
|
set_irq_handler (irq, handle_edge_irq);
|
|
set_irq_flags (irq, IRQF_VALID);
|
|
}
|
|
set_irq_chained_handler (IRQ_CPLD, kev7a400_cpld_handler);
|
|
|
|
/* Clear all CPLD interrupts */
|
|
CPLD_CL_INT = 0xff; /* CPLD_INTR_MMC_CD | CPLD_INTR_ETH_INT; */
|
|
|
|
GPIO_GPIOINTEN = 0; /* Disable all GPIO interrupts */
|
|
barrier();
|
|
|
|
#if 0
|
|
GPIO_INTTYPE1
|
|
= (GPIO_INTR_PCC1_CD | GPIO_INTR_PCC1_CD); /* Edge trig. */
|
|
GPIO_INTTYPE2 = 0; /* Falling edge & low-level */
|
|
GPIO_GPIOFEOI = 0xff; /* Clear all GPIO interrupts */
|
|
GPIO_GPIOINTEN = 0xff; /* Enable all GPIO interrupts */
|
|
|
|
init_FIQ();
|
|
#endif
|
|
}
|
|
|
|
MACHINE_START (KEV7A400, "Sharp KEV7a400")
|
|
/* Maintainer: Marc Singer */
|
|
.phys_io = 0x80000000,
|
|
.io_pg_offst = ((io_p2v (0x80000000))>>18) & 0xfffc,
|
|
.boot_params = 0xc0000100,
|
|
.map_io = kev7a400_map_io,
|
|
.init_irq = lh7a400_init_irq,
|
|
.timer = &lh7a40x_timer,
|
|
MACHINE_END
|