2007-02-16 22:36:55 +08:00
|
|
|
/*
|
|
|
|
* arch/arm/mach-ns9xxx/board-a9m9750dev.c
|
|
|
|
*
|
|
|
|
* Copyright (C) 2006,2007 by Digi International Inc.
|
|
|
|
* All rights reserved.
|
|
|
|
*
|
|
|
|
* 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/irq.h>
|
|
|
|
|
|
|
|
#include <asm/mach/map.h>
|
2007-10-01 03:36:14 +08:00
|
|
|
#include <asm/gpio.h>
|
2007-02-16 22:36:55 +08:00
|
|
|
|
2008-08-05 23:14:15 +08:00
|
|
|
#include <mach/board.h>
|
|
|
|
#include <mach/processor-ns9360.h>
|
|
|
|
#include <mach/regs-sys-ns9360.h>
|
|
|
|
#include <mach/regs-mem.h>
|
|
|
|
#include <mach/regs-bbu.h>
|
|
|
|
#include <mach/regs-board-a9m9750dev.h>
|
2007-02-16 22:36:55 +08:00
|
|
|
|
|
|
|
#include "board-a9m9750dev.h"
|
|
|
|
|
|
|
|
static struct map_desc board_a9m9750dev_io_desc[] __initdata = {
|
|
|
|
{ /* FPGA on CS0 */
|
|
|
|
.virtual = io_p2v(NS9XXX_CSxSTAT_PHYS(0)),
|
|
|
|
.pfn = __phys_to_pfn(NS9XXX_CSxSTAT_PHYS(0)),
|
|
|
|
.length = NS9XXX_CS0STAT_LENGTH,
|
|
|
|
.type = MT_DEVICE,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
void __init board_a9m9750dev_map_io(void)
|
|
|
|
{
|
|
|
|
iotable_init(board_a9m9750dev_io_desc,
|
|
|
|
ARRAY_SIZE(board_a9m9750dev_io_desc));
|
|
|
|
}
|
|
|
|
|
|
|
|
static void a9m9750dev_fpga_ack_irq(unsigned int irq)
|
|
|
|
{
|
|
|
|
/* nothing */
|
|
|
|
}
|
|
|
|
|
|
|
|
static void a9m9750dev_fpga_mask_irq(unsigned int irq)
|
|
|
|
{
|
2007-10-01 03:36:33 +08:00
|
|
|
u8 ier;
|
|
|
|
|
|
|
|
ier = __raw_readb(FPGA_IER);
|
|
|
|
|
|
|
|
ier &= ~(1 << (irq - FPGA_IRQ(0)));
|
|
|
|
|
|
|
|
__raw_writeb(ier, FPGA_IER);
|
2007-02-16 22:36:55 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static void a9m9750dev_fpga_maskack_irq(unsigned int irq)
|
|
|
|
{
|
|
|
|
a9m9750dev_fpga_mask_irq(irq);
|
|
|
|
a9m9750dev_fpga_ack_irq(irq);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void a9m9750dev_fpga_unmask_irq(unsigned int irq)
|
|
|
|
{
|
2007-10-01 03:36:33 +08:00
|
|
|
u8 ier;
|
|
|
|
|
|
|
|
ier = __raw_readb(FPGA_IER);
|
|
|
|
|
|
|
|
ier |= 1 << (irq - FPGA_IRQ(0));
|
|
|
|
|
|
|
|
__raw_writeb(ier, FPGA_IER);
|
2007-02-16 22:36:55 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct irq_chip a9m9750dev_fpga_chip = {
|
|
|
|
.ack = a9m9750dev_fpga_ack_irq,
|
|
|
|
.mask = a9m9750dev_fpga_mask_irq,
|
|
|
|
.mask_ack = a9m9750dev_fpga_maskack_irq,
|
|
|
|
.unmask = a9m9750dev_fpga_unmask_irq,
|
|
|
|
};
|
|
|
|
|
|
|
|
static void a9m9750dev_fpga_demux_handler(unsigned int irq,
|
|
|
|
struct irq_desc *desc)
|
|
|
|
{
|
2007-10-01 03:36:33 +08:00
|
|
|
u8 stat = __raw_readb(FPGA_ISR);
|
2007-02-16 22:36:55 +08:00
|
|
|
|
2007-10-01 03:34:41 +08:00
|
|
|
desc->chip->mask_ack(irq);
|
|
|
|
|
2007-02-16 22:36:55 +08:00
|
|
|
while (stat != 0) {
|
|
|
|
int irqno = fls(stat) - 1;
|
|
|
|
|
|
|
|
stat &= ~(1 << irqno);
|
|
|
|
|
2008-10-09 20:36:24 +08:00
|
|
|
generic_handle_irq(FPGA_IRQ(irqno));
|
2007-02-16 22:36:55 +08:00
|
|
|
}
|
2007-10-01 03:34:41 +08:00
|
|
|
|
|
|
|
desc->chip->unmask(irq);
|
2007-02-16 22:36:55 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
void __init board_a9m9750dev_init_irq(void)
|
|
|
|
{
|
2007-10-01 03:36:33 +08:00
|
|
|
u32 eic;
|
2007-02-16 22:36:55 +08:00
|
|
|
int i;
|
|
|
|
|
2007-10-01 03:36:14 +08:00
|
|
|
if (gpio_request(11, "board a9m9750dev extirq2") == 0)
|
2008-02-15 15:41:06 +08:00
|
|
|
ns9360_gpio_configure(11, 0, 1);
|
2007-10-01 03:36:14 +08:00
|
|
|
else
|
2008-02-15 15:41:06 +08:00
|
|
|
printk(KERN_ERR "%s: cannot get gpio 11 for IRQ_NS9XXX_EXT2\n",
|
2007-10-01 03:36:14 +08:00
|
|
|
__func__);
|
2007-02-16 22:36:55 +08:00
|
|
|
|
|
|
|
for (i = FPGA_IRQ(0); i <= FPGA_IRQ(7); ++i) {
|
|
|
|
set_irq_chip(i, &a9m9750dev_fpga_chip);
|
|
|
|
set_irq_handler(i, handle_level_irq);
|
|
|
|
set_irq_flags(i, IRQF_VALID);
|
|
|
|
}
|
|
|
|
|
2008-02-15 15:41:06 +08:00
|
|
|
/* IRQ_NS9XXX_EXT2: level sensitive + active low */
|
2007-10-01 03:36:33 +08:00
|
|
|
eic = __raw_readl(SYS_EIC(2));
|
|
|
|
REGSET(eic, SYS_EIC, PLTY, AL);
|
|
|
|
REGSET(eic, SYS_EIC, LVEDG, LEVEL);
|
|
|
|
__raw_writel(eic, SYS_EIC(2));
|
2007-02-16 22:36:55 +08:00
|
|
|
|
2008-02-15 15:41:06 +08:00
|
|
|
set_irq_chained_handler(IRQ_NS9XXX_EXT2,
|
2007-02-16 22:36:55 +08:00
|
|
|
a9m9750dev_fpga_demux_handler);
|
|
|
|
}
|
|
|
|
|
|
|
|
void __init board_a9m9750dev_init_machine(void)
|
|
|
|
{
|
|
|
|
u32 reg;
|
|
|
|
|
|
|
|
/* setup static CS0: memory base ... */
|
2007-10-01 03:36:33 +08:00
|
|
|
reg = __raw_readl(SYS_SMCSSMB(0));
|
|
|
|
REGSETIM(reg, SYS_SMCSSMB, CSxB, NS9XXX_CSxSTAT_PHYS(0) >> 12);
|
|
|
|
__raw_writel(reg, SYS_SMCSSMB(0));
|
2007-02-16 22:36:55 +08:00
|
|
|
|
|
|
|
/* ... and mask */
|
2007-10-01 03:36:33 +08:00
|
|
|
reg = __raw_readl(SYS_SMCSSMM(0));
|
2007-02-16 22:36:55 +08:00
|
|
|
REGSETIM(reg, SYS_SMCSSMM, CSxM, 0xfffff);
|
|
|
|
REGSET(reg, SYS_SMCSSMM, CSEx, EN);
|
2007-10-01 03:36:33 +08:00
|
|
|
__raw_writel(reg, SYS_SMCSSMM(0));
|
2007-02-16 22:36:55 +08:00
|
|
|
|
|
|
|
/* setup static CS0: memory configuration */
|
2007-10-01 03:36:33 +08:00
|
|
|
reg = __raw_readl(MEM_SMC(0));
|
2007-07-18 05:35:52 +08:00
|
|
|
REGSET(reg, MEM_SMC, PSMC, OFF);
|
2007-02-16 22:36:55 +08:00
|
|
|
REGSET(reg, MEM_SMC, BSMC, OFF);
|
|
|
|
REGSET(reg, MEM_SMC, EW, OFF);
|
|
|
|
REGSET(reg, MEM_SMC, PB, 1);
|
|
|
|
REGSET(reg, MEM_SMC, PC, AL);
|
|
|
|
REGSET(reg, MEM_SMC, PM, DIS);
|
|
|
|
REGSET(reg, MEM_SMC, MW, 8);
|
2007-10-01 03:36:33 +08:00
|
|
|
__raw_writel(reg, MEM_SMC(0));
|
2007-02-16 22:36:55 +08:00
|
|
|
|
|
|
|
/* setup static CS0: timing */
|
2007-10-01 03:36:33 +08:00
|
|
|
__raw_writel(0x2, MEM_SMWED(0));
|
|
|
|
__raw_writel(0x2, MEM_SMOED(0));
|
|
|
|
__raw_writel(0x6, MEM_SMRD(0));
|
|
|
|
__raw_writel(0x6, MEM_SMWD(0));
|
2007-02-16 22:36:55 +08:00
|
|
|
}
|