diff options
| author | Ingo Molnar <mingo@kernel.org> | 2012-04-14 13:18:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-04-14 13:19:04 +0200 |
| commit | 6ac1ef482d7ae0c690f1640bf6eb818ff9a2d91e (patch) | |
| tree | 021cc9f6b477146fcebe6f3be4752abfa2ba18a9 /arch/arm/plat-nomadik/timer.c | |
| parent | 682968e0c425c60f0dde37977e5beb2b12ddc4cc (diff) | |
| parent | a385ec4f11bdcf81af094c03e2444ee9b7fad2e5 (diff) | |
Merge branch 'perf/core' into perf/uprobes
Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/plat-nomadik/timer.c')
| -rw-r--r-- | arch/arm/plat-nomadik/timer.c | 33 |
1 files changed, 8 insertions, 25 deletions
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c index ad1b45b605a..9222e5522a4 100644 --- a/arch/arm/plat-nomadik/timer.c +++ b/arch/arm/plat-nomadik/timer.c @@ -21,12 +21,6 @@ #include <asm/sched_clock.h> /* - * Guaranteed runtime conversion range in seconds for - * the clocksource and clockevent. - */ -#define MTU_MIN_RANGE 4 - -/* * The MTU device hosts four different counters, with 4 set of * registers. These are register names. */ @@ -66,12 +60,11 @@ #define MTU_PCELL2 0xff8 #define MTU_PCELL3 0xffC +static void __iomem *mtu_base; static bool clkevt_periodic; static u32 clk_prescale; static u32 nmdk_cycle; /* write-once */ -void __iomem *mtu_base; /* Assigned by machine code */ - #ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK /* * Override the global weak sched_clock symbol with this @@ -103,7 +96,6 @@ static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev) void nmdk_clkevt_reset(void) { if (clkevt_periodic) { - /* Timer: configure load and background-load, and fire it up */ writel(nmdk_cycle, mtu_base + MTU_LR(1)); writel(nmdk_cycle, mtu_base + MTU_BGLR(1)); @@ -121,7 +113,6 @@ void nmdk_clkevt_reset(void) static void nmdk_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev) { - switch (mode) { case CLOCK_EVT_MODE_PERIODIC: clkevt_periodic = true; @@ -183,15 +174,16 @@ void nmdk_clksrc_reset(void) mtu_base + MTU_CR(0)); } -void __init nmdk_timer_init(void) +void __init nmdk_timer_init(void __iomem *base) { unsigned long rate; struct clk *clk0; + mtu_base = base; clk0 = clk_get_sys("mtu0", NULL); BUG_ON(IS_ERR(clk0)); - - clk_enable(clk0); + BUG_ON(clk_prepare(clk0) < 0); + BUG_ON(clk_enable(clk0) < 0); /* * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz @@ -224,17 +216,8 @@ void __init nmdk_timer_init(void) setup_sched_clock(nomadik_read_sched_clock, 32, rate); #endif - /* Timer 1 is used for events */ - - clockevents_calc_mult_shift(&nmdk_clkevt, rate, MTU_MIN_RANGE); - - nmdk_clkevt.max_delta_ns = - clockevent_delta2ns(0xffffffff, &nmdk_clkevt); - nmdk_clkevt.min_delta_ns = - clockevent_delta2ns(0x00000002, &nmdk_clkevt); - nmdk_clkevt.cpumask = cpumask_of(0); - - /* Register irq and clockevents */ + /* Timer 1 is used for events, register irq and clockevents */ setup_irq(IRQ_MTU0, &nmdk_timer_irq); - clockevents_register_device(&nmdk_clkevt); + nmdk_clkevt.cpumask = cpumask_of(0); + clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU); } |