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Kirill Smelkov
linux
Commits
7e7e2f03
Commit
7e7e2f03
authored
Aug 27, 2008
by
David S. Miller
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sparc32: Convert apc to OF driver.
Signed-off-by:
David S. Miller
<
davem@davemloft.net
>
parent
4b1c5df2
Changes
1
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1 changed file
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38 additions
and
34 deletions
+38
-34
arch/sparc/kernel/apc.c
arch/sparc/kernel/apc.c
+38
-34
No files found.
arch/sparc/kernel/apc.c
View file @
7e7e2f03
...
...
@@ -12,9 +12,10 @@
#include <linux/miscdevice.h>
#include <linux/smp_lock.h>
#include <linux/pm.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <asm/io.h>
#include <asm/sbus.h>
#include <asm/oplib.h>
#include <asm/uaccess.h>
#include <asm/auxio.h>
...
...
@@ -29,11 +30,10 @@
#define APC_OBPNAME "power-management"
#define APC_DEVNAME "apc"
volatile
static
u8
__iomem
*
regs
;
static
int
apc_regsize
;
static
u8
__iomem
*
regs
;
static
int
apc_no_idle
__initdata
=
0
;
#define apc_readb(offs)
(sbus_readb(regs+offs))
#define apc_readb(offs) (sbus_readb(regs+offs))
#define apc_writeb(val, offs) (sbus_writeb(val, regs+offs))
/* Specify "apc=noidle" on the kernel command line to
...
...
@@ -69,9 +69,9 @@ static void apc_swift_idle(void)
#endif
}
static
inline
void
apc_free
(
void
)
static
inline
void
apc_free
(
struct
of_device
*
op
)
{
sbus_iounmap
(
regs
,
apc_regsize
);
of_iounmap
(
&
op
->
resource
[
0
],
regs
,
resource_size
(
&
op
->
resource
[
0
])
);
}
static
int
apc_open
(
struct
inode
*
inode
,
struct
file
*
f
)
...
...
@@ -153,52 +153,56 @@ static const struct file_operations apc_fops = {
static
struct
miscdevice
apc_miscdev
=
{
APC_MINOR
,
APC_DEVNAME
,
&
apc_fops
};
static
int
__init
apc_probe
(
void
)
static
int
__devinit
apc_probe
(
struct
of_device
*
op
,
const
struct
of_device_id
*
match
)
{
struct
sbus_bus
*
sbus
=
NULL
;
struct
sbus_dev
*
sdev
=
NULL
;
int
iTmp
=
0
;
for_each_sbus
(
sbus
)
{
for_each_sbusdev
(
sdev
,
sbus
)
{
if
(
!
strcmp
(
sdev
->
prom_name
,
APC_OBPNAME
))
{
goto
sbus_done
;
}
}
}
int
err
;
sbus_done:
if
(
!
sdev
)
{
return
-
ENODEV
;
}
apc_regsize
=
sdev
->
reg_addrs
[
0
].
reg_size
;
regs
=
sbus_ioremap
(
&
sdev
->
resource
[
0
],
0
,
apc_regsize
,
APC_OBPNAME
);
if
(
!
regs
)
{
regs
=
of_ioremap
(
&
op
->
resource
[
0
],
0
,
resource_size
(
&
op
->
resource
[
0
]),
APC_OBPNAME
);
if
(
!
regs
)
{
printk
(
KERN_ERR
"%s: unable to map registers
\n
"
,
APC_DEVNAME
);
return
-
ENODEV
;
}
iTmp
=
misc_register
(
&
apc_miscdev
);
if
(
iTmp
!=
0
)
{
err
=
misc_register
(
&
apc_miscdev
);
if
(
err
)
{
printk
(
KERN_ERR
"%s: unable to register device
\n
"
,
APC_DEVNAME
);
apc_free
();
apc_free
(
op
);
return
-
ENODEV
;
}
/* Assign power management IDLE handler */
if
(
!
apc_no_idle
)
if
(
!
apc_no_idle
)
pm_idle
=
apc_swift_idle
;
printk
(
KERN_INFO
"%s: power management initialized%s
\n
"
,
APC_DEVNAME
,
apc_no_idle
?
" (CPU idle disabled)"
:
""
);
APC_DEVNAME
,
apc_no_idle
?
" (CPU idle disabled)"
:
""
);
return
0
;
}
static
struct
of_device_id
apc_match
[]
=
{
{
.
name
=
APC_OBPNAME
,
},
{},
};
MODULE_DEVICE_TABLE
(
of
,
apc_match
);
static
struct
of_platform_driver
apc_driver
=
{
.
name
=
"apc"
,
.
match_table
=
apc_match
,
.
probe
=
apc_probe
,
};
static
int
__init
apc_init
(
void
)
{
return
of_register_driver
(
&
apc_driver
,
&
of_bus_type
);
}
/* This driver is not critical to the boot process
* and is easiest to ioremap when SBus is already
* initialized, so we install ourselves thusly:
*/
__initcall
(
apc_probe
);
__initcall
(
apc_init
);
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