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linux
linux-davinci
Commits
b19974dc
Commit
b19974dc
authored
Aug 03, 2006
by
Juha Yrjola
Browse files
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Plain Diff
Merge 65.200.49.170:linux-omap
parents
246e7893
3bfb289c
Changes
6
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6 changed files
with
112 additions
and
88 deletions
+112
-88
arch/arm/mach-omap1/clock.c
arch/arm/mach-omap1/clock.c
+42
-58
arch/arm/mach-omap2/clock.c
arch/arm/mach-omap2/clock.c
+32
-17
arch/arm/mach-omap2/prcm.c
arch/arm/mach-omap2/prcm.c
+3
-7
arch/arm/plat-omap/clock.c
arch/arm/plat-omap/clock.c
+25
-0
drivers/serial/8250.c
drivers/serial/8250.c
+9
-4
include/asm-arm/arch-omap/clock.h
include/asm-arm/arch-omap/clock.h
+1
-2
No files found.
arch/arm/mach-omap1/clock.c
View file @
b19974dc
...
...
@@ -586,77 +586,55 @@ static int omap1_clk_set_rate(struct clk *clk, unsigned long rate)
*-------------------------------------------------------------------------*/
#ifdef CONFIG_OMAP_RESET_CLOCKS
/*
* Resets some clocks that may be left on from bootloader,
* but leaves serial clocks on. See also omap_late_clk_reset().
*/
static
inline
void
omap1_early_clk_reset
(
void
)
{
//omap_writel(0x3 << 29, MOD_CONF_CTRL_0);
}
static
int
__init
omap1_late_clk_reset
(
void
)
static
void
__init
omap1_clk_disable_unused
(
struct
clk
*
clk
)
{
/* Turn off all unused clocks */
struct
clk
*
p
;
__u32
regval32
;
/* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */
regval32
=
omap_readw
(
SOFT_REQ_REG
)
&
(
1
<<
4
);
omap_writew
(
regval32
,
SOFT_REQ_REG
);
omap_writew
(
0
,
SOFT_REQ_REG2
);
list_for_each_entry
(
p
,
&
clocks
,
node
)
{
if
(
p
->
usecount
>
0
||
(
p
->
flags
&
ALWAYS_ENABLED
)
||
p
->
enable_reg
==
0
)
continue
;
/* Clocks in the DSP domain need api_ck. Just assume bootloader
* has not enabled any DSP clocks */
if
((
u32
)
p
->
enable_reg
==
DSP_IDLECT2
)
{
printk
(
KERN_INFO
"Skipping reset check for DSP domain "
"clock
\"
%s
\"\n
"
,
p
->
name
);
continue
;
}
/* Clocks in the DSP domain need api_ck. Just assume bootloader
* has not enabled any DSP clocks */
if
((
u32
)
clk
->
enable_reg
==
DSP_IDLECT2
)
{
printk
(
KERN_INFO
"Skipping reset check for DSP domain "
"clock
\"
%s
\"\n
"
,
clk
->
name
);
return
;
}
/* Is the clock already disabled? */
if
(
p
->
flags
&
ENABLE_REG_32BIT
)
{
if
(
p
->
flags
&
VIRTUAL_IO_ADDRESS
)
regval32
=
__raw_readl
(
p
->
enable_reg
);
else
regval32
=
omap_readl
(
p
->
enable_reg
);
}
else
{
if
(
p
->
flags
&
VIRTUAL_IO_ADDRESS
)
regval32
=
__raw_readw
(
p
->
enable_reg
);
/* Is the clock already disabled? */
if
(
clk
->
flags
&
ENABLE_REG_32BIT
)
{
if
(
clk
->
flags
&
VIRTUAL_IO_ADDRESS
)
regval32
=
__raw_readl
(
clk
->
enable_reg
);
else
regval32
=
omap_readw
(
p
->
enable_reg
);
}
if
((
regval32
&
(
1
<<
p
->
enable_bit
))
==
0
)
continue
;
regval32
=
omap_readl
(
clk
->
enable_reg
);
}
else
{
if
(
clk
->
flags
&
VIRTUAL_IO_ADDRESS
)
regval32
=
__raw_readw
(
clk
->
enable_reg
);
else
regval32
=
omap_readw
(
clk
->
enable_reg
);
}
/* FIXME: This clock seems to be necessary but no-one
* has asked for its activation. */
if
(
p
==
&
tc2_ck
// FIX: pm.c (SRAM), CCP, Camera
||
p
==
&
ck_dpll1out
.
clk
// FIX: SoSSI, SSR
||
p
==
&
arm_gpio_ck
// FIX: GPIO code for 1510
)
{
printk
(
KERN_INFO
"FIXME: Clock
\"
%s
\"
seems unused
\n
"
,
p
->
name
);
continue
;
}
if
((
regval32
&
(
1
<<
clk
->
enable_bit
))
==
0
)
return
;
printk
(
KERN_INFO
"Disabling unused clock
\"
%s
\"
... "
,
p
->
name
);
p
->
disable
(
p
);
printk
(
" done
\n
"
);
/* FIXME: This clock seems to be necessary but no-one
* has asked for its activation. */
if
(
clk
==
&
tc2_ck
// FIX: pm.c (SRAM), CCP, Camera
||
clk
==
&
ck_dpll1out
.
clk
// FIX: SoSSI, SSR
||
clk
==
&
arm_gpio_ck
// FIX: GPIO code for 1510
)
{
printk
(
KERN_INFO
"FIXME: Clock
\"
%s
\"
seems unused
\n
"
,
clk
->
name
);
return
;
}
printk
(
KERN_INFO
"Disabling unused clock
\"
%s
\"
... "
,
clk
->
name
);
clk
->
disable
(
clk
);
printk
(
" done
\n
"
);
return
0
;
}
late_initcall
(
omap1_late_clk_reset
);
#else
#define omap1_
early_clk_reset() {}
#define omap1_
clk_disable_unused NULL
#endif
static
struct
clk_functions
omap1_clk_functions
=
{
...
...
@@ -664,6 +642,7 @@ static struct clk_functions omap1_clk_functions = {
.
clk_disable
=
omap1_clk_disable
,
.
clk_round_rate
=
omap1_clk_round_rate
,
.
clk_set_rate
=
omap1_clk_set_rate
,
.
clk_disable_unused
=
omap1_clk_disable_unused
,
};
int
__init
omap1_clk_init
(
void
)
...
...
@@ -671,8 +650,13 @@ int __init omap1_clk_init(void)
struct
clk
**
clkp
;
const
struct
omap_clock_config
*
info
;
int
crystal_type
=
0
;
/* Default 12 MHz */
u32
reg
;
/* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */
reg
=
omap_readw
(
SOFT_REQ_REG
)
&
(
1
<<
4
);
omap_writew
(
reg
,
SOFT_REQ_REG
);
omap_writew
(
0
,
SOFT_REQ_REG2
);
omap1_early_clk_reset
();
clk_init
(
&
omap1_clk_functions
);
/* By default all idlect1 clocks are allowed to idle */
...
...
arch/arm/mach-omap2/clock.c
View file @
b19974dc
...
...
@@ -37,6 +37,8 @@
static
struct
prcm_config
*
curr_prcm_set
;
static
u32
curr_perf_level
=
PRCM_FULL_SPEED
;
static
struct
clk
*
vclk
;
static
struct
clk
*
sclk
;
/*-------------------------------------------------------------------------
* Omap2 specific clock functions
...
...
@@ -954,12 +956,29 @@ static int omap2_select_table_rate(struct clk * clk, unsigned long rate)
* Omap2 clock reset and init functions
*-------------------------------------------------------------------------*/
#ifdef CONFIG_OMAP_RESET_CLOCKS
static
void
__init
omap2_clk_disable_unused
(
struct
clk
*
clk
)
{
u32
regval32
;
regval32
=
__raw_readl
(
clk
->
enable_reg
);
if
((
regval32
&
(
1
<<
clk
->
enable_bit
))
==
0
)
return
;
printk
(
KERN_INFO
"Disabling unused clock
\"
%s
\"\n
"
,
clk
->
name
);
_omap2_clk_disable
(
clk
);
}
#else
#define omap2_clk_disable_unused NULL
#endif
static
struct
clk_functions
omap2_clk_functions
=
{
.
clk_enable
=
omap2_clk_enable
,
.
clk_disable
=
omap2_clk_disable
,
.
clk_round_rate
=
omap2_clk_round_rate
,
.
clk_set_rate
=
omap2_clk_set_rate
,
.
clk_set_parent
=
omap2_clk_set_parent
,
.
clk_disable_unused
=
omap2_clk_disable_unused
,
};
static
void
__init
omap2_get_crystal_rate
(
struct
clk
*
osc
,
struct
clk
*
sys
)
...
...
@@ -985,27 +1004,19 @@ static void __init omap2_get_crystal_rate(struct clk *osc, struct clk *sys)
sys
->
rate
=
sclk
;
}
#ifdef CONFIG_OMAP_RESET_CLOCKS
static
void
__init
omap2_disable_unused_clocks
(
void
)
/*
* Set clocks for bypass mode for reboot to work.
*/
void
omap2_clk_prepare_for_reboot
(
void
)
{
struct
clk
*
ck
;
u32
regval32
;
list_for_each_entry
(
ck
,
&
clocks
,
node
)
{
if
(
ck
->
usecount
>
0
||
(
ck
->
flags
&
ALWAYS_ENABLED
)
||
ck
->
enable_reg
==
0
)
continue
;
u32
rate
;
regval32
=
__raw_readl
(
ck
->
enable_reg
);
if
((
regval32
&
(
1
<<
ck
->
enable_bit
))
==
0
)
continue
;
if
(
vclk
==
NULL
||
sclk
==
NULL
)
return
;
printk
(
KERN_INFO
"Disabling unused clock
\"
%s
\"\n
"
,
ck
->
name
);
_omap2_clk_disable
(
ck
);
}
rate
=
clk_get_rate
(
sclk
);
clk_set_rate
(
vclk
,
rate
);
}
late_initcall
(
omap2_disable_unused_clocks
);
#endif
/*
* Switch the MPU rate if specified on cmdline.
...
...
@@ -1081,5 +1092,9 @@ int __init omap2_clk_init(void)
if
(
cpu_is_omap2430
())
clk_enable
(
&
sdrc_ick
);
/* Avoid sleeping sleeping during omap2_clk_prepare_for_reboot() */
vclk
=
clk_get
(
NULL
,
"virt_prcm_set"
);
sclk
=
clk_get
(
NULL
,
"sys_ck"
);
return
0
;
}
arch/arm/mach-omap2/prcm.c
View file @
b19974dc
...
...
@@ -20,6 +20,8 @@
#include "prcm-regs.h"
extern
void
omap2_clk_prepare_for_reboot
(
void
);
u32
omap_prcm_get_reset_sources
(
void
)
{
return
RM_RSTST_WKUP
&
0x7f
;
...
...
@@ -29,12 +31,6 @@ EXPORT_SYMBOL(omap_prcm_get_reset_sources);
/* Resets clock rates and reboots the system. Only called from system.h */
void
omap_prcm_arch_reset
(
char
mode
)
{
u32
rate
;
struct
clk
*
vclk
,
*
sclk
;
vclk
=
clk_get
(
NULL
,
"virt_prcm_set"
);
sclk
=
clk_get
(
NULL
,
"sys_ck"
);
rate
=
clk_get_rate
(
sclk
);
clk_set_rate
(
vclk
,
rate
);
/* go to bypass for OMAP limitation */
omap2_clk_prepare_for_reboot
();
RM_RSTCTRL_WKUP
|=
2
;
}
arch/arm/plat-omap/clock.c
View file @
b19974dc
...
...
@@ -323,6 +323,31 @@ EXPORT_SYMBOL(clk_allow_idle);
/*-------------------------------------------------------------------------*/
#ifdef CONFIG_OMAP_RESET_CLOCKS
/*
* Disable any unused clocks left on by the bootloader
*/
static
int
__init
clk_disable_unused
(
void
)
{
struct
clk
*
ck
;
unsigned
long
flags
;
list_for_each_entry
(
ck
,
&
clocks
,
node
)
{
if
(
ck
->
usecount
>
0
||
(
ck
->
flags
&
ALWAYS_ENABLED
)
||
ck
->
enable_reg
==
0
)
continue
;
spin_lock_irqsave
(
&
clockfw_lock
,
flags
);
if
(
arch_clock
->
clk_disable_unused
)
arch_clock
->
clk_disable_unused
(
ck
);
spin_unlock_irqrestore
(
&
clockfw_lock
,
flags
);
}
return
0
;
}
late_initcall
(
clk_disable_unused
);
#endif
int
__init
clk_init
(
struct
clk_functions
*
custom_clocks
)
{
if
(
!
custom_clocks
)
{
...
...
drivers/serial/8250.c
View file @
b19974dc
...
...
@@ -2271,10 +2271,14 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
touch_nmi_watchdog
();
if
(
oops_in_progress
)
{
locked
=
spin_trylock_irqsave
(
&
up
->
port
.
lock
,
flags
);
local_irq_save
(
flags
);
if
(
up
->
port
.
sysrq
)
{
/* serial8250_handle_port() already took the lock */
locked
=
0
;
}
else
if
(
oops_in_progress
)
{
locked
=
spin_trylock
(
&
up
->
port
.
lock
);
}
else
spin_lock
_irqsave
(
&
up
->
port
.
lock
,
flags
);
spin_lock
(
&
up
->
port
.
lock
);
/*
* First save the IER then disable the interrupts
...
...
@@ -2296,7 +2300,8 @@ serial8250_console_write(struct console *co, const char *s, unsigned int count)
serial_out
(
up
,
UART_IER
,
ier
);
if
(
locked
)
spin_unlock_irqrestore
(
&
up
->
port
.
lock
,
flags
);
spin_unlock
(
&
up
->
port
.
lock
);
local_irq_restore
(
flags
);
}
static
int
serial8250_console_setup
(
struct
console
*
co
,
char
*
options
)
...
...
include/asm-arm/arch-omap/clock.h
View file @
b19974dc
...
...
@@ -45,11 +45,10 @@ struct clk_functions {
struct
clk
*
(
*
clk_get_parent
)(
struct
clk
*
clk
);
void
(
*
clk_allow_idle
)(
struct
clk
*
clk
);
void
(
*
clk_deny_idle
)(
struct
clk
*
clk
);
void
(
*
clk_disable_unused
)(
struct
clk
*
clk
);
};
extern
unsigned
int
mpurate
;
extern
struct
list_head
clocks
;
extern
spinlock_t
clockfw_lock
;
extern
int
clk_init
(
struct
clk_functions
*
custom_clocks
);
extern
int
clk_register
(
struct
clk
*
clk
);
...
...
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