diff options
Diffstat (limited to 'arch/hexagon/kernel/time.c')
| -rw-r--r-- | arch/hexagon/kernel/time.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/arch/hexagon/kernel/time.c b/arch/hexagon/kernel/time.c index f99e9257bed4..6f851e1cd4ee 100644 --- a/arch/hexagon/kernel/time.c +++ b/arch/hexagon/kernel/time.c @@ -17,8 +17,11 @@ #include <linux/of_irq.h> #include <linux/module.h> -#include <asm/timer-regs.h> +#include <asm/delay.h> #include <asm/hexagon_vm.h> +#include <asm/time.h> + +#define TIMER_ENABLE BIT(0) /* * For the clocksource we need: @@ -33,6 +36,13 @@ cycles_t pcycle_freq_mhz; cycles_t thread_freq_mhz; cycles_t sleep_clk_freq; +/* + * 8x50 HDD Specs 5-8. Simulator co-sim not fixed until + * release 1.1, and then it's "adjustable" and probably not defaulted. + */ +#define RTOS_TIMER_INT 3 +#define RTOS_TIMER_REGS_ADDR 0xAB000000UL + static struct resource rtos_timer_resources[] = { { .start = RTOS_TIMER_REGS_ADDR, @@ -80,7 +90,7 @@ static int set_next_event(unsigned long delta, struct clock_event_device *evt) iowrite32(0, &rtos_timer->clear); iowrite32(delta, &rtos_timer->match); - iowrite32(1 << TIMER_ENABLE, &rtos_timer->enable); + iowrite32(TIMER_ENABLE, &rtos_timer->enable); return 0; } @@ -143,13 +153,6 @@ static irqreturn_t timer_interrupt(int irq, void *devid) return IRQ_HANDLED; } -/* This should also be pulled from devtree */ -static struct irqaction rtos_timer_intdesc = { - .handler = timer_interrupt, - .flags = IRQF_TIMER | IRQF_TRIGGER_RISING, - .name = "rtos_timer" -}; - /* * time_init_deferred - called by start_kernel to set up timer/clock source * @@ -159,15 +162,15 @@ static struct irqaction rtos_timer_intdesc = { * This runs just before the delay loop is calibrated, and * is used for delay calibration. */ -void __init time_init_deferred(void) +static void __init time_init_deferred(void) { struct resource *resource = NULL; struct clock_event_device *ce_dev = &hexagon_clockevent_dev; + unsigned long flag = IRQF_TIMER | IRQF_TRIGGER_RISING; ce_dev->cpumask = cpu_all_mask; - if (!resource) - resource = rtos_timer_device.resource; + resource = rtos_timer_device.resource; /* ioremap here means this has to run later, after paging init */ rtos_timer = ioremap(resource->start, resource_size(resource)); @@ -195,7 +198,8 @@ void __init time_init_deferred(void) #endif clockevents_register_device(ce_dev); - setup_irq(ce_dev->irq, &rtos_timer_intdesc); + if (request_irq(ce_dev->irq, timer_interrupt, flag, "rtos_timer", NULL)) + pr_err("Failed to register rtos_timer interrupt\n"); } void __init time_init(void) |