static void __arch_timer_setup()

in arm_arch_timer.c [821:881]

• 53 lines of code
• 8 McCabe index (conditional complexity)

static void __arch_timer_setup(unsigned type,
			       struct clock_event_device *clk)
{
	u64 max_delta;

	clk->features = CLOCK_EVT_FEAT_ONESHOT;

	if (type == ARCH_TIMER_TYPE_CP15) {
		typeof(clk->set_next_event) sne;

		arch_timer_check_ool_workaround(ate_match_local_cap_id, NULL);

		if (arch_timer_c3stop)
			clk->features |= CLOCK_EVT_FEAT_C3STOP;
		clk->name = "arch_sys_timer";
		clk->rating = 450;
		clk->cpumask = cpumask_of(smp_processor_id());
		clk->irq = arch_timer_ppi[arch_timer_uses_ppi];
		switch (arch_timer_uses_ppi) {
		case ARCH_TIMER_VIRT_PPI:
			clk->set_state_shutdown = arch_timer_shutdown_virt;
			clk->set_state_oneshot_stopped = arch_timer_shutdown_virt;
			sne = erratum_handler(set_next_event_virt);
			break;
		case ARCH_TIMER_PHYS_SECURE_PPI:
		case ARCH_TIMER_PHYS_NONSECURE_PPI:
		case ARCH_TIMER_HYP_PPI:
			clk->set_state_shutdown = arch_timer_shutdown_phys;
			clk->set_state_oneshot_stopped = arch_timer_shutdown_phys;
			sne = erratum_handler(set_next_event_phys);
			break;
		default:
			BUG();
		}

		clk->set_next_event = sne;
		max_delta = __arch_timer_check_delta();
	} else {
		clk->features |= CLOCK_EVT_FEAT_DYNIRQ;
		clk->name = "arch_mem_timer";
		clk->rating = 400;
		clk->cpumask = cpu_possible_mask;
		if (arch_timer_mem_use_virtual) {
			clk->set_state_shutdown = arch_timer_shutdown_virt_mem;
			clk->set_state_oneshot_stopped = arch_timer_shutdown_virt_mem;
			clk->set_next_event =
				arch_timer_set_next_event_virt_mem;
		} else {
			clk->set_state_shutdown = arch_timer_shutdown_phys_mem;
			clk->set_state_oneshot_stopped = arch_timer_shutdown_phys_mem;
			clk->set_next_event =
				arch_timer_set_next_event_phys_mem;
		}

		max_delta = CLOCKSOURCE_MASK(56);
	}

	clk->set_state_shutdown(clk);

	clockevents_config_and_register(clk, arch_timer_rate, 0xf, max_delta);
}