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sh: trapped io support for r2d V2 

This patch converts the CF device on r2d boards from machvec readb/writeb
to 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 20:21:10 +09:00 committed by Paul Mundt
parent e7cc9a7340
commit 2d952b4b8c
3 changed files with 15 additions and 34 deletions
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1
arch/sh/Kconfig
View File

@ -459,6 +459,7 @@ config SH_RTS7751R2D
bool "RTS7751R2D"
depends on CPU_SUBTYPE_SH7751R
select SYS_SUPPORTS_PCI
select IO_TRAPPED
help
Select RTS7751R2D if configuring for a Renesas Technology
Sales SH-Graphics board.

45
arch/sh/boards/renesas/rts7751r2d/setup.c
View File

@ -21,6 +21,7 @@
#include <asm/machvec.h>
#include <asm/rts7751r2d.h>
#include <asm/io.h>
#include <asm/io_trapped.h>
#include <asm/spi.h>
static struct resource cf_ide_resources[] = {
@ -214,13 +215,25 @@ static struct platform_device *rts7751r2d_devices[] __initdata = {
&uart_device,
&sm501_device,
#endif
&cf_ide_device,
&heartbeat_device,
&spi_sh_sci_device,
};
/*
* The CF is connected with 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 rts7751r2d_devices_setup(void)
{
if (register_trapped_io(&cf_trapped_io) == 0)
platform_device_register(&cf_ide_device);
spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
return platform_add_devices(rts7751r2d_devices,
ARRAY_SIZE(rts7751r2d_devices));
@ -232,34 +245,6 @@ static void rts7751r2d_power_off(void)
ctrl_outw(0x0001, PA_POWOFF);
}
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 rts7751r2d_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 rts7751r2d_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
*/
@ -310,6 +295,4 @@ static struct sh_machine_vector mv_rts7751r2d __initmv = {
.mv_setup = rts7751r2d_setup,
.mv_init_irq = init_rts7751r2d_IRQ,
.mv_irq_demux = rts7751r2d_irq_demux,
.mv_writeb = rts7751r2d_writeb,
.mv_readb = rts7751r2d_readb,
};

3
include/asm-sh/rts7751r2d.h
View File

@ -67,7 +67,4 @@
void init_rts7751r2d_IRQ(void);
int rts7751r2d_irq_demux(int);
#define __IO_PREFIX rts7751r2d
#include <asm/io_generic.h>
#endif /* __ASM_SH_RENESAS_RTS7751R2D */