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Elphel
linux-elphel
Commits
36a8eb4e
Commit
36a8eb4e
authored
Apr 14, 2016
by
Oleg Dzhimiev
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Plain Diff
writel/readl work now
parent
8511552a
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21 additions
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8 deletions
+21
-8
elphel393-init.c
src/drivers/elphel/elphel393-init.c
+21
-8
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src/drivers/elphel/elphel393-init.c
View file @
36a8eb4e
...
...
@@ -412,18 +412,31 @@ static int get_factory_info(void){
static
int
setup_mio_pin_and_reset_usb
(
void
){
u32
reg_value
;
void
__iomem
*
emio_ptr
=
ioremap
(
0xe000a000
,
0x00000300
);
if
(
!
emio_ptr
)
{
pr_err
(
"Failed to get a pointer to the EMIO registers"
);
return
-
1
;
}
const
u32
newvalue
=
0x1
<<
17
;
reg_value
=
readl
(
0xe000a244
);
writel
(
reg_value
|
newvalue
,
0xe000a244
);
reg_value
=
readl
(
emio_ptr
+
0x244
);
pr_debug
(
"read DIR reg: 0x%08x
\n
"
,
reg_value
);
writel
(
reg_value
|
newvalue
,
emio_ptr
+
0x244
);
udelay
(
10
);
reg_value
=
readl
(
0xe000a248
);
writel
(
reg_value
|
newvalue
,
0xe000a248
);
reg_value
=
readl
(
emio_ptr
+
0x248
);
pr_debug
(
"read EN reg: 0x%08x
\n
"
,
reg_value
);
writel
(
reg_value
|
newvalue
,
emio_ptr
+
0x248
);
udelay
(
10
);
reg_value
=
readl
(
0xe000a044
);
writel
(
reg_value
&
(
~
newvalue
),
0xe000a044
);
reg_value
=
readl
(
emio_ptr
+
0x44
);
pr_debug
(
"read OUT reg: 0x%08x
\n
"
,
reg_value
);
writel
(
reg_value
&
(
~
newvalue
),
emio_ptr
+
0x44
);
udelay
(
10
);
writel
(
reg_value
|
newvalue
,
0xe000a044
);
reg_value
=
readl
(
0xe000a064
);
writel
(
reg_value
|
newvalue
,
emio_ptr
+
0x44
);
reg_value
=
readl
(
emio_ptr
+
0x64
);
pr_debug
(
"read IN reg (correct value: 0x00020000): 0x%08x
\n
"
,
reg_value
);
iounmap
(
emio_ptr
);
return
0
;
}
...
...
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