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linux
linux-davinci
Commits
cc5e4ce9
Commit
cc5e4ce9
authored
Nov 25, 2008
by
Hiroshi DOYU
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omap mailbox: convert sequence bit checking to module paramter
Signed-off-by:
Hiroshi DOYU
<
Hiroshi.DOYU@nokia.com
>
parent
f5d125c2
Changes
1
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1 changed file
with
16 additions
and
19 deletions
+16
-19
arch/arm/plat-omap/mailbox.c
arch/arm/plat-omap/mailbox.c
+16
-19
No files found.
arch/arm/plat-omap/mailbox.c
View file @
cc5e4ce9
...
@@ -32,30 +32,34 @@
...
@@ -32,30 +32,34 @@
#include <asm/io.h>
#include <asm/io.h>
#include <mach/mailbox.h>
#include <mach/mailbox.h>
static
int
enable_seq_bit
;
module_param
(
enable_seq_bit
,
bool
,
0
);
MODULE_PARM_DESC
(
enable_seq_bit
,
"Enable sequence bit checking."
);
static
struct
omap_mbox
*
mboxes
;
static
struct
omap_mbox
*
mboxes
;
static
DEFINE_RWLOCK
(
mboxes_lock
);
static
DEFINE_RWLOCK
(
mboxes_lock
);
/*
/*
* Mailbox sequence bit API
* Mailbox sequence bit API
*/
*/
#if defined(CONFIG_ARCH_OMAP1)
# define MBOX_USE_SEQ_BIT
#elif defined(CONFIG_ARCH_OMAP2)
# define MBOX_USE_SEQ_BIT
#endif
#ifdef MBOX_USE_SEQ_BIT
/* seq_rcv should be initialized with any value other than
/* seq_rcv should be initialized with any value other than
* 0 and 1 << 31, to allow either value for the first
* 0 and 1 << 31, to allow either value for the first
* message. */
* message. */
static
inline
void
mbox_seq_init
(
struct
omap_mbox
*
mbox
)
static
inline
void
mbox_seq_init
(
struct
omap_mbox
*
mbox
)
{
{
if
(
!
enable_seq_bit
)
return
;
/* any value other than 0 and 1 << 31 */
/* any value other than 0 and 1 << 31 */
mbox
->
seq_rcv
=
0xffffffff
;
mbox
->
seq_rcv
=
0xffffffff
;
}
}
static
inline
void
mbox_seq_toggle
(
struct
omap_mbox
*
mbox
,
mbox_msg_t
*
msg
)
static
inline
void
mbox_seq_toggle
(
struct
omap_mbox
*
mbox
,
mbox_msg_t
*
msg
)
{
{
if
(
!
enable_seq_bit
)
return
;
/* add seq_snd to msg */
/* add seq_snd to msg */
*
msg
=
(
*
msg
&
0x7fffffff
)
|
mbox
->
seq_snd
;
*
msg
=
(
*
msg
&
0x7fffffff
)
|
mbox
->
seq_snd
;
/* flip seq_snd */
/* flip seq_snd */
...
@@ -64,24 +68,17 @@ static inline void mbox_seq_toggle(struct omap_mbox *mbox, mbox_msg_t * msg)
...
@@ -64,24 +68,17 @@ static inline void mbox_seq_toggle(struct omap_mbox *mbox, mbox_msg_t * msg)
static
inline
int
mbox_seq_test
(
struct
omap_mbox
*
mbox
,
mbox_msg_t
msg
)
static
inline
int
mbox_seq_test
(
struct
omap_mbox
*
mbox
,
mbox_msg_t
msg
)
{
{
mbox_msg_t
seq
=
msg
&
(
1
<<
31
);
mbox_msg_t
seq
;
if
(
!
enable_seq_bit
)
return
0
;
seq
=
msg
&
(
1
<<
31
);
if
(
seq
==
mbox
->
seq_rcv
)
if
(
seq
==
mbox
->
seq_rcv
)
return
-
1
;
return
-
1
;
mbox
->
seq_rcv
=
seq
;
mbox
->
seq_rcv
=
seq
;
return
0
;
return
0
;
}
}
#else
static
inline
void
mbox_seq_init
(
struct
omap_mbox
*
mbox
)
{
}
static
inline
void
mbox_seq_toggle
(
struct
omap_mbox
*
mbox
,
mbox_msg_t
*
msg
)
{
}
static
inline
int
mbox_seq_test
(
struct
omap_mbox
*
mbox
,
mbox_msg_t
msg
)
{
return
0
;
}
#endif
/* Mailbox FIFO handle functions */
/* Mailbox FIFO handle functions */
static
inline
mbox_msg_t
mbox_fifo_read
(
struct
omap_mbox
*
mbox
)
static
inline
mbox_msg_t
mbox_fifo_read
(
struct
omap_mbox
*
mbox
)
...
...
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