linux-kernel - [PATCH v10 13/27] drivers: firmware: psci: Support hierarchical CPU idle states

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Date:   Thu, 29 Nov 2018 18:46:46 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Sudeep Holla <sudeep.holla@....com>,
        Lorenzo Pieralisi <Lorenzo.Pieralisi@....com>,
        Mark Rutland <mark.rutland@....com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-pm@...r.kernel.org
Cc:     "Raju P . L . S . S . S . N" <rplsssn@...eaurora.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Tony Lindgren <tony@...mide.com>,
        Kevin Hilman <khilman@...nel.org>,
        Lina Iyer <ilina@...eaurora.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Lina Iyer <lina.iyer@...aro.org>
Subject: [PATCH v10 13/27] drivers: firmware: psci: Support hierarchical CPU idle states

From: Lina Iyer <lina.iyer@...aro.org>

Currently CPU's idle states are represented in a flattened model, via the
"cpu-idle-states" binding from within the CPU's device nodes.

Support the hierarchical layout, simply by converting to calling the new OF
helper, of_get_cpu_state_node().

Cc: Lina Iyer <ilina@...eaurora.org>
Suggested-by: Sudeep Holla <sudeep.holla@....com>
Signed-off-by: Lina Iyer <lina.iyer@...aro.org>
Co-developed-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
---

Changes in v10:
	- None.

---
 drivers/firmware/psci/psci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index cbfc936d251c..631e20720a22 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -300,7 +300,7 @@ static int psci_dt_cpu_init_idle(struct cpuidle_driver *drv,
 		return -ENOMEM;
 
 	for (i = 0; i < num_state_nodes; 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;
 
-- 
2.17.1