From 980f2296b5a8dfe589f023fd34229dcfdcf280fa Mon Sep 17 00:00:00 2001 From: Mikael Pettersson Date: Thu, 29 Oct 2009 11:46:55 -0700 Subject: 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 Signed-off-by: Dan Williams 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 ARCH_ACORN 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 @@ extern int iop3xx_get_init_atu(void); 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 void __init iq81340mc_timer_init(void) 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 void __init iq81340sc_timer_init(void) 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 void __init em7210_timer_init(void) 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 void __init glantank_timer_init(void) 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 void __init iq31244_timer_init(void) 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 void __init iq80321_timer_init(void) 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..2a5c6376 100644 --- a/arch/arm/mach-iop32x/n2100.c +++ b/arch/arm/mach-iop32x/n2100.c @@ -53,7 +53,6 @@ static void __init n2100_timer_init(void) 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 void __init iq80331_timer_init(void) 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 void __init iq80332_timer_init(void) 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 @@ static void __init iop_clockevent_set_hz(struct clock_event_device *ce, unsigned 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 @@ void __init iop_init_time(unsigned long tick_rate) 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 | -- cgit v0.10.2