Thread (29 messages) 29 messages, 5 authors, 2014-03-26
STALE4466d
Revisions (2)
  1. v3 [diff vs current]
  2. v5 current

[PATCH v5 14/14] ARM: mvebu: register the cpuidle driver for the Armada XP SoCs

From: Gregory CLEMENT <hidden>
Date: 2014-03-25 22:49:29
Also in: linux-pm, lkml
Subsystem: arm port, arm/marvell kirkwood and armada 370, 375, 38x, 39x, xp, 3700, 7k/8k, cn9130 soc support, the rest · Maintainers: Russell King, Andrew Lunn, Gregory Clement, Sebastian Hesselbarth, Linus Torvalds

The cpuidle is a platform driver so we register the device just after
the initialization of the board in an arch_initcall.

Signed-off-by: Gregory CLEMENT <redacted>
---
 arch/arm/mach-mvebu/pmsu.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c
index 5812ff4a9b63..fa611594b65a 100644
--- a/arch/arm/mach-mvebu/pmsu.c
+++ b/arch/arm/mach-mvebu/pmsu.c
@@ -21,6 +21,7 @@
 #include <linux/init.h>
 #include <linux/of_address.h>
 #include <linux/io.h>
+#include <linux/platform_device.h>
 #include <linux/smp.h>
 #include <asm/cacheflush.h>
 #include <asm/cp15.h>
@@ -65,6 +66,10 @@ static void __iomem *pmsu_reset_base;
 extern void ll_disable_coherency(void);
 extern void ll_enable_coherency(void);
 
+static struct platform_device armada_xp_cpuidle_device = {
+	.name = "cpuidle-armada-370-xp",
+};
+
 static struct of_device_id of_pmsu_table[] = {
 	{
 		.compatible = "marvell,armada-370-pmsu",
@@ -285,4 +290,21 @@ static struct notifier_block armada_370_xp_cpu_pm_notifier = {
 	.notifier_call = armada_370_xp_cpu_pm_notify,
 };
 
+int __init armada_370_xp_cpu_pm_init(void)
+{
+	if (!((of_find_compatible_node(NULL, NULL, "marvell,armada-370-xp-pmsu") ||
+				of_find_compatible_node(NULL, NULL, "marvell,armada-370-pmsu"))
+			&& of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric")
+			&& of_machine_is_compatible("marvell,armadaxp")))
+		return 0;
+
+	armada_370_xp_pmsu_enable_l2_powerdown_onidle();
+	armada_xp_cpuidle_device.dev.platform_data = armada_370_xp_cpu_suspend;
+	platform_device_register(&armada_xp_cpuidle_device);
+	cpu_pm_register_notifier(&armada_370_xp_cpu_pm_notifier);
+
+	return 0;
+}
+
+arch_initcall(armada_370_xp_cpu_pm_init);
 early_initcall(armada_370_xp_pmsu_init);
-- 
1.8.1.2
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