110 lines
2.1 KiB
C
110 lines
2.1 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
/*
|
||
|
|
* linux/arch/arm/mach-omap1/io.c
|
||
|
|
*
|
||
|
|
* OMAP1 I/O mapping code
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
#include <linux/omap-dma.h>
|
||
|
|
|
||
|
|
#include <asm/tlb.h>
|
||
|
|
#include <asm/mach/map.h>
|
||
|
|
|
||
|
|
#include "tc.h"
|
||
|
|
#include "iomap.h"
|
||
|
|
#include "common.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The machine specific code may provide the extra mapping besides the
|
||
|
|
* default mapping provided here.
|
||
|
|
*/
|
||
|
|
static struct map_desc omap1_io_desc[] __initdata = {
|
||
|
|
{
|
||
|
|
.virtual = OMAP1_IO_VIRT,
|
||
|
|
.pfn = __phys_to_pfn(OMAP1_IO_PHYS),
|
||
|
|
.length = OMAP1_IO_SIZE,
|
||
|
|
.type = MT_DEVICE
|
||
|
|
}, {
|
||
|
|
.virtual = OMAP1_DSP_BASE,
|
||
|
|
.pfn = __phys_to_pfn(OMAP1_DSP_START),
|
||
|
|
.length = OMAP1_DSP_SIZE,
|
||
|
|
.type = MT_DEVICE
|
||
|
|
}, {
|
||
|
|
.virtual = OMAP1_DSPREG_BASE,
|
||
|
|
.pfn = __phys_to_pfn(OMAP1_DSPREG_START),
|
||
|
|
.length = OMAP1_DSPREG_SIZE,
|
||
|
|
.type = MT_DEVICE
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Maps common IO regions for omap1
|
||
|
|
*/
|
||
|
|
void __init omap1_map_io(void)
|
||
|
|
{
|
||
|
|
iotable_init(omap1_io_desc, ARRAY_SIZE(omap1_io_desc));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Common low-level hardware init for omap1.
|
||
|
|
*/
|
||
|
|
void __init omap1_init_early(void)
|
||
|
|
{
|
||
|
|
omap_check_revision();
|
||
|
|
|
||
|
|
/* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort
|
||
|
|
* on a Posted Write in the TIPB Bridge".
|
||
|
|
*/
|
||
|
|
omap_writew(0x0, MPU_PUBLIC_TIPB_CNTL);
|
||
|
|
omap_writew(0x0, MPU_PRIVATE_TIPB_CNTL);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init omap1_init_late(void)
|
||
|
|
{
|
||
|
|
omap_serial_wakeup_init();
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NOTE: Please use ioremap + __raw_read/write where possible instead of these
|
||
|
|
*/
|
||
|
|
|
||
|
|
u8 omap_readb(u32 pa)
|
||
|
|
{
|
||
|
|
return __raw_readb(OMAP1_IO_ADDRESS(pa));
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(omap_readb);
|
||
|
|
|
||
|
|
u16 omap_readw(u32 pa)
|
||
|
|
{
|
||
|
|
return __raw_readw(OMAP1_IO_ADDRESS(pa));
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(omap_readw);
|
||
|
|
|
||
|
|
u32 omap_readl(u32 pa)
|
||
|
|
{
|
||
|
|
return __raw_readl(OMAP1_IO_ADDRESS(pa));
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(omap_readl);
|
||
|
|
|
||
|
|
void omap_writeb(u8 v, u32 pa)
|
||
|
|
{
|
||
|
|
__raw_writeb(v, OMAP1_IO_ADDRESS(pa));
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(omap_writeb);
|
||
|
|
|
||
|
|
void omap_writew(u16 v, u32 pa)
|
||
|
|
{
|
||
|
|
__raw_writew(v, OMAP1_IO_ADDRESS(pa));
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(omap_writew);
|
||
|
|
|
||
|
|
void omap_writel(u32 v, u32 pa)
|
||
|
|
{
|
||
|
|
__raw_writel(v, OMAP1_IO_ADDRESS(pa));
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(omap_writel);
|