Commit 778f173e authored by Lina Iyer's avatar Lina Iyer Committed by Ulf Hansson
Browse files

cpuidle: dt: Support hierarchical CPU idle states 



Currently CPU's idle states are represented using the flattened model.
Let's add support for the hierarchical layout, via converting to use
of_get_cpu_state_node().

Suggested-by: default avatarSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: default avatarLina Iyer <lina.iyer@linaro.org>
Reviewed-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Co-developed-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: default avatarSudeep Holla <sudeep.holla@arm.com>
Acked-by: default avatarRafael J. Wysocki <rafael@kernel.org>
parent b9f8c26a

drivers/cpuidle/dt_idle_states.c

+2 −3
Original line number Diff line number Diff line
@@ -111,8 +111,7 @@ static bool idle_state_valid(struct device_node *state_node, unsigned int idx, 
	for (cpu = cpumask_next(cpumask_first(cpumask), cpumask);

	     cpu < nr_cpu_ids; cpu = cpumask_next(cpu, cpumask)) {

		cpu_node = of_cpu_device_node_get(cpu);

		curr_state_node = of_parse_phandle(cpu_node, "cpu-idle-states",

						   idx);

		curr_state_node = of_get_cpu_state_node(cpu_node, idx);

		if (state_node != curr_state_node)

			valid = false;
@@ -170,7 +169,7 @@ int dt_init_idle_driver(struct cpuidle_driver *drv, 
	cpu_node = of_cpu_device_node_get(cpumask_first(cpumask));



	for (i = 0; ; i++) {

		state_node = of_parse_phandle(cpu_node, "cpu-idle-states", i);

		state_node = of_get_cpu_state_node(cpu_node, i);

		if (!state_node)

			break;