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sh: trapped io support for highlander V2 

This patch converts the highlander CF device from good old machvec readb/writeb
to the new shiny trapped io.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2008-02-07 20:23:53 +09:00 committed by Paul Mundt
parent 2d952b4b8c
commit c1a34e4c54
3 changed files with 17 additions and 34 deletions
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1
arch/sh/Kconfig
View File

@ -476,6 +476,7 @@ config SH_HIGHLANDER
bool "Highlander"
depends on CPU_SUBTYPE_SH7780 || CPU_SUBTYPE_SH7785
select SYS_SUPPORTS_PCI
select IO_TRAPPED
config SH_MIGOR
bool "Migo-R"

47
arch/sh/boards/renesas/r7780rp/setup.c
View File

@ -23,6 +23,7 @@
#include <asm/clock.h>
#include <asm/heartbeat.h>
#include <asm/io.h>
#include <asm/io_trapped.h>
static struct resource r8a66597_usb_host_resources[] = {
[0] = {
@ -181,13 +182,27 @@ static struct platform_device *r7780rp_devices[] __initdata = {
&m66592_usb_peripheral_device,
&heartbeat_device,
#ifndef CONFIG_SH_R7780RP
&cf_ide_device,
&ax88796_device,
#endif
};
/*
* The CF is connected using a 16-bit bus where 8-bit operations are
* unsupported. The linux ata driver is however using 8-bit operations, so
* insert a trapped io filter to convert 8-bit operations into 16-bit.
*/
static struct trapped_io cf_trapped_io = {
.resource = cf_ide_resources,
.num_resources = 2,
.minimum_bus_width = 16,
};
static int __init r7780rp_devices_setup(void)
{
#ifndef CONFIG_SH_R7780RP
if (register_trapped_io(&cf_trapped_io) == 0)
platform_device_register(&cf_ide_device);
#endif
return platform_add_devices(r7780rp_devices,
ARRAY_SIZE(r7780rp_devices));
}
@ -226,34 +241,6 @@ static void r7780rp_power_off(void)
ctrl_outw(0x0001, PA_POFF);
}
static inline unsigned char is_ide_ioaddr(unsigned long addr)
{
return ((cf_ide_resources[0].start <= addr &&
addr <= cf_ide_resources[0].end) ||
(cf_ide_resources[1].start <= addr &&
addr <= cf_ide_resources[1].end));
}
void highlander_writeb(u8 b, void __iomem *addr)
{
unsigned long tmp = (unsigned long __force)addr;
if (is_ide_ioaddr(tmp))
ctrl_outw((u16)b, tmp);
else
ctrl_outb(b, tmp);
}
u8 highlander_readb(void __iomem *addr)
{
unsigned long tmp = (unsigned long __force)addr;
if (is_ide_ioaddr(tmp))
return ctrl_inw(tmp) & 0xff;
else
return ctrl_inb(tmp);
}
/*
* Initialize the board
*/
@ -338,6 +325,4 @@ static struct sh_machine_vector mv_highlander __initmv = {
.mv_setup = highlander_setup,
.mv_init_irq = highlander_init_irq,
.mv_irq_demux = highlander_irq_demux,
.mv_readb = highlander_readb,
.mv_writeb = highlander_writeb,
};

3
include/asm-sh/r7780rp.h
View File

@ -195,7 +195,4 @@ unsigned char *highlander_init_irq_r7780mp(void);
unsigned char *highlander_init_irq_r7780rp(void);
unsigned char *highlander_init_irq_r7785rp(void);
#define __IO_PREFIX r7780rp
#include <asm/io_generic.h>
#endif /* __ASM_SH_RENESAS_R7780RP */