iop: enable generic time
This updates the IOP platform to use the kernel's generic time
framework. With clockevent support in place, this reduces to
selecting GENERIC_TIME and removing the platform's private timer
->offset() operation (iop_gettimeoffset).
Tested on n2100, compile-tested for all plat-iop machines.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e732fcc..455284e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -811,6 +811,7 @@
config PLAT_IOP
bool
select GENERIC_CLOCKEVENTS
+ select GENERIC_TIME
config PLAT_ORION
bool
diff --git a/arch/arm/include/asm/hardware/iop3xx.h b/arch/arm/include/asm/hardware/iop3xx.h
index 34601b9..5daea29 100644
--- a/arch/arm/include/asm/hardware/iop3xx.h
+++ b/arch/arm/include/asm/hardware/iop3xx.h
@@ -234,7 +234,6 @@
void iop3xx_map_io(void);
void iop_init_cp6_handler(void);
void iop_init_time(unsigned long tickrate);
-unsigned long iop_gettimeoffset(void);
static inline u32 read_tmr0(void)
{
diff --git a/arch/arm/mach-iop13xx/include/mach/time.h b/arch/arm/mach-iop13xx/include/mach/time.h
index b2fb17b..f1c00d6 100644
--- a/arch/arm/mach-iop13xx/include/mach/time.h
+++ b/arch/arm/mach-iop13xx/include/mach/time.h
@@ -20,7 +20,6 @@
#define IOP13XX_CORE_FREQ_1200 (5 << 16)
void iop_init_time(unsigned long tickrate);
-unsigned long iop_gettimeoffset(void);
static inline unsigned long iop13xx_core_freq(void)
{
diff --git a/arch/arm/mach-iop13xx/iq81340mc.c b/arch/arm/mach-iop13xx/iq81340mc.c
index 5051c03..f91f315 100644
--- a/arch/arm/mach-iop13xx/iq81340mc.c
+++ b/arch/arm/mach-iop13xx/iq81340mc.c
@@ -87,7 +87,6 @@
static struct sys_timer iq81340mc_timer = {
.init = iq81340mc_timer_init,
- .offset = iop_gettimeoffset,
};
MACHINE_START(IQ81340MC, "Intel IQ81340MC")
diff --git a/arch/arm/mach-iop13xx/iq81340sc.c b/arch/arm/mach-iop13xx/iq81340sc.c
index bc44307..ddb7a34 100644
--- a/arch/arm/mach-iop13xx/iq81340sc.c
+++ b/arch/arm/mach-iop13xx/iq81340sc.c
@@ -89,7 +89,6 @@
static struct sys_timer iq81340sc_timer = {
.init = iq81340sc_timer_init,
- .offset = iop_gettimeoffset,
};
MACHINE_START(IQ81340SC, "Intel IQ81340SC")
diff --git a/arch/arm/mach-iop32x/em7210.c b/arch/arm/mach-iop32x/em7210.c
index 3ad4696..2bef9b6 100644
--- a/arch/arm/mach-iop32x/em7210.c
+++ b/arch/arm/mach-iop32x/em7210.c
@@ -42,7 +42,6 @@
static struct sys_timer em7210_timer = {
.init = em7210_timer_init,
- .offset = iop_gettimeoffset,
};
/*
diff --git a/arch/arm/mach-iop32x/glantank.c b/arch/arm/mach-iop32x/glantank.c
index a9c2dfd..93370a4 100644
--- a/arch/arm/mach-iop32x/glantank.c
+++ b/arch/arm/mach-iop32x/glantank.c
@@ -47,7 +47,6 @@
static struct sys_timer glantank_timer = {
.init = glantank_timer_init,
- .offset = iop_gettimeoffset,
};
diff --git a/arch/arm/mach-iop32x/iq31244.c b/arch/arm/mach-iop32x/iq31244.c
index dd1cd99..a7a08dd 100644
--- a/arch/arm/mach-iop32x/iq31244.c
+++ b/arch/arm/mach-iop32x/iq31244.c
@@ -78,7 +78,6 @@
static struct sys_timer iq31244_timer = {
.init = iq31244_timer_init,
- .offset = iop_gettimeoffset,
};
diff --git a/arch/arm/mach-iop32x/iq80321.c b/arch/arm/mach-iop32x/iq80321.c
index fbe2779..0200f80 100644
--- a/arch/arm/mach-iop32x/iq80321.c
+++ b/arch/arm/mach-iop32x/iq80321.c
@@ -46,7 +46,6 @@
static struct sys_timer iq80321_timer = {
.init = iq80321_timer_init,
- .offset = iop_gettimeoffset,
};
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
index d2e4278..2a5c637 100644
--- a/arch/arm/mach-iop32x/n2100.c
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -53,7 +53,6 @@
static struct sys_timer n2100_timer = {
.init = n2100_timer_init,
- .offset = iop_gettimeoffset,
};
diff --git a/arch/arm/mach-iop33x/iq80331.c b/arch/arm/mach-iop33x/iq80331.c
index d51e10c..394e95a 100644
--- a/arch/arm/mach-iop33x/iq80331.c
+++ b/arch/arm/mach-iop33x/iq80331.c
@@ -48,7 +48,6 @@
static struct sys_timer iq80331_timer = {
.init = iq80331_timer_init,
- .offset = iop_gettimeoffset,
};
diff --git a/arch/arm/mach-iop33x/iq80332.c b/arch/arm/mach-iop33x/iq80332.c
index 92fb44c..a40badf 100644
--- a/arch/arm/mach-iop33x/iq80332.c
+++ b/arch/arm/mach-iop33x/iq80332.c
@@ -48,7 +48,6 @@
static struct sys_timer iq80332_timer = {
.init = iq80332_timer_init,
- .offset = iop_gettimeoffset,
};
diff --git a/arch/arm/plat-iop/time.c b/arch/arm/plat-iop/time.c
index a550e96..aaaef3b 100644
--- a/arch/arm/plat-iop/time.c
+++ b/arch/arm/plat-iop/time.c
@@ -140,33 +140,6 @@
ce->name, ce->shift, ce->mult);
}
-static unsigned long ticks_per_usec;
-static unsigned long next_jiffy_time;
-
-unsigned long iop_gettimeoffset(void)
-{
- unsigned long offset, temp;
-
- /* enable cp6, if necessary, to avoid taking the overhead of an
- * undefined instruction trap
- */
- asm volatile (
- "mrc p15, 0, %0, c15, c1, 0\n\t"
- "tst %0, #(1 << 6)\n\t"
- "orreq %0, %0, #(1 << 6)\n\t"
- "mcreq p15, 0, %0, c15, c1, 0\n\t"
-#ifdef CONFIG_CPU_XSCALE
- "mrceq p15, 0, %0, c15, c1, 0\n\t"
- "moveq %0, %0\n\t"
- "subeq pc, pc, #4\n\t"
-#endif
- : "=r"(temp) : : "cc");
-
- offset = next_jiffy_time - read_tcr1();
-
- return offset / ticks_per_usec;
-}
-
static irqreturn_t
iop_timer_interrupt(int irq, void *dev_id)
{
@@ -196,8 +169,6 @@
u32 timer_ctl;
ticks_per_jiffy = DIV_ROUND_CLOSEST(tick_rate, HZ);
- ticks_per_usec = tick_rate / 1000000;
- next_jiffy_time = 0xffffffff;
iop_tick_rate = tick_rate;
timer_ctl = IOP_TMR_EN | IOP_TMR_PRIVILEGED |