diff options
| author | Graf Yang <graf.yang@analog.com> | 2009-05-15 11:01:59 +0000 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2009-06-12 06:11:37 -0400 |
| commit | 1fa9be72b558c39459f98835eb86dbb4ef4da30b (patch) | |
| tree | f0b71c7b7a3639285c64e3f3cbc449c3ff9eee3b /arch/blackfin/mach-common | |
| parent | 555487bbb63f527e63fecbff48c86e2c07ce5024 (diff) | |
| download | blackbird-op-linux-1fa9be72b558c39459f98835eb86dbb4ef4da30b.tar.gz blackbird-op-linux-1fa9be72b558c39459f98835eb86dbb4ef4da30b.zip | |
Blackfin: add support for gptimer0 as a tick source
For systems where the core cycles are not a usable tick source (like SMP
or cycles gets updated), enable gptimer0 as an alternative.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin/mach-common')
| -rw-r--r-- | arch/blackfin/mach-common/ints-priority.c | 23 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/smp.c | 5 |
2 files changed, 9 insertions, 19 deletions
diff --git a/arch/blackfin/mach-common/ints-priority.c b/arch/blackfin/mach-common/ints-priority.c index 389c5e8aa456..6e808612d170 100644 --- a/arch/blackfin/mach-common/ints-priority.c +++ b/arch/blackfin/mach-common/ints-priority.c @@ -1052,7 +1052,7 @@ int __init init_arch_irq(void) set_irq_chained_handler(irq, bfin_demux_error_irq); break; #endif -#if defined(CONFIG_TICK_SOURCE_SYSTMR0) || defined(CONFIG_IPIPE) +#if defined(CONFIG_TICKSOURCE_GPTMR0) case IRQ_TIMER0: set_irq_handler(irq, handle_percpu_irq); break; @@ -1232,13 +1232,9 @@ asmlinkage int __ipipe_grab_irq(int vec, struct pt_regs *regs) if (likely(vec == EVT_IVTMR_P)) { irq = IRQ_CORETMR; - goto core_tick; - } - - SSYNC(); + } else { #if defined(CONFIG_BF54x) || defined(CONFIG_BF52x) || defined(CONFIG_BF561) - { unsigned long sic_status[3]; sic_status[0] = bfin_read_SIC_ISR0() & bfin_read_SIC_IMASK0(); @@ -1254,9 +1250,7 @@ asmlinkage int __ipipe_grab_irq(int vec, struct pt_regs *regs) if (sic_status[(ivg->irqno - IVG7) / 32] & ivg->isrflag) break; } - } #else - { unsigned long sic_status; sic_status = bfin_read_SIC_IMASK() & bfin_read_SIC_ISR(); @@ -1268,15 +1262,13 @@ asmlinkage int __ipipe_grab_irq(int vec, struct pt_regs *regs) } else if (sic_status & ivg->isrflag) break; } - } #endif - irq = ivg->irqno; + irq = ivg->irqno; + } if (irq == IRQ_SYSTMR) { -#ifdef CONFIG_GENERIC_CLOCKEVENTS -core_tick: -#else +#ifndef CONFIG_GENERIC_CLOCKEVENTS bfin_write_TIMER_STATUS(1); /* Latch TIMIL0 */ #endif /* This is basically what we need from the register frame. */ @@ -1288,9 +1280,6 @@ core_tick: __raw_get_cpu_var(__ipipe_tick_regs).ipend |= 0x10; } -#ifndef CONFIG_GENERIC_CLOCKEVENTS -core_tick: -#endif if (this_domain == ipipe_root_domain) { s = __test_and_set_bit(IPIPE_SYNCDEFER_FLAG, &p->status); barrier(); @@ -1308,7 +1297,7 @@ core_tick: } } - return 0; + return 0; } #endif /* CONFIG_IPIPE */ diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c index 187c79e585a1..b6695957b065 100644 --- a/arch/blackfin/mach-common/smp.c +++ b/arch/blackfin/mach-common/smp.c @@ -43,6 +43,7 @@ #include <asm/processor.h> #include <asm/ptrace.h> #include <asm/cpu.h> +#include <asm/time.h> #include <linux/err.h> /* @@ -356,7 +357,7 @@ int __cpuinit __cpu_up(unsigned int cpu) static void __cpuinit setup_secondary(unsigned int cpu) { -#if !(defined(CONFIG_TICK_SOURCE_SYSTMR0) || defined(CONFIG_IPIPE)) +#if !defined(CONFIG_TICKSOURCE_GPTMR0) struct irq_desc *timer_desc; #endif unsigned long ilat; @@ -377,7 +378,7 @@ static void __cpuinit setup_secondary(unsigned int cpu) IMASK_IVG14 | IMASK_IVG13 | IMASK_IVG12 | IMASK_IVG11 | IMASK_IVG10 | IMASK_IVG9 | IMASK_IVG8 | IMASK_IVG7 | IMASK_IVGHW; -#if defined(CONFIG_TICK_SOURCE_SYSTMR0) || defined(CONFIG_IPIPE) +#if defined(CONFIG_TICKSOURCE_GPTMR0) /* Power down the core timer, just to play safe. */ bfin_write_TCNTL(0); |
