Merge branch 'cpuidle/3.16' of git://git.linaro.org/people/daniel.lezcano/linux into pm-cpuidle

Pull ARM cpuidle updates for v3.16 from Daniel Lezcano.

* 'cpuidle/3.16' of git://git.linaro.org/people/daniel.lezcano/linux:
  ARM: clps711x: Add cpuidle driver

3 files changed, 71 insertions, 0 deletions

diff --git a/drivers/cpuidle/Kconfig.arm b/drivers/cpuidle/Kconfig.arm
index 97ccc31dbdd8..371e75d2348d 100644
--- a/drivers/cpuidle/Kconfig.arm
+++ b/drivers/cpuidle/Kconfig.arm
@@ -13,6 +13,12 @@ config ARM_BIG_LITTLE_CPUIDLE
 	  define different C-states for little and big cores through the
 	  multiple CPU idle drivers infrastructure.
 
+config ARM_CLPS711X_CPUIDLE
+	bool "CPU Idle Driver for CLPS711X processors"
+	depends on ARCH_CLPS711X || COMPILE_TEST
+	help
+	  Select this to enable cpuidle on Cirrus Logic CLPS711X SOCs.
+
 config ARM_HIGHBANK_CPUIDLE
 	bool "CPU Idle Driver for Calxeda processors"
 	depends on ARM_PSCI
diff --git a/drivers/cpuidle/Makefile b/drivers/cpuidle/Makefile
index f71ae1b373c5..534fff575823 100644
--- a/drivers/cpuidle/Makefile
+++ b/drivers/cpuidle/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED) += coupled.o
 ##################################################################################
 # ARM SoC drivers
 obj-$(CONFIG_ARM_BIG_LITTLE_CPUIDLE)	+= cpuidle-big_little.o
+obj-$(CONFIG_ARM_CLPS711X_CPUIDLE)	+= cpuidle-clps711x.o
 obj-$(CONFIG_ARM_HIGHBANK_CPUIDLE)	+= cpuidle-calxeda.o
 obj-$(CONFIG_ARM_KIRKWOOD_CPUIDLE)	+= cpuidle-kirkwood.o
 obj-$(CONFIG_ARM_ZYNQ_CPUIDLE)		+= cpuidle-zynq.o
diff --git a/drivers/cpuidle/cpuidle-clps711x.c b/drivers/cpuidle/cpuidle-clps711x.c
new file mode 100644
index 000000000000..5243811daa6e
--- /dev/null
+++ b/drivers/cpuidle/cpuidle-clps711x.c
@@ -0,0 +1,64 @@
+/*
+ *  CLPS711X CPU idle driver
+ *
+ *  Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/cpuidle.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#define CLPS711X_CPUIDLE_NAME	"clps711x-cpuidle"
+
+static void __iomem *clps711x_halt;
+
+static int clps711x_cpuidle_halt(struct cpuidle_device *dev,
+				 struct cpuidle_driver *drv, int index)
+{
+	writel(0xaa, clps711x_halt);
+
+	return index;
+}
+
+static struct cpuidle_driver clps711x_idle_driver = {
+	.name		= CLPS711X_CPUIDLE_NAME,
+	.owner		= THIS_MODULE,
+	.states[0]	= {
+		.name		= "HALT",
+		.desc		= "CLPS711X HALT",
+		.enter		= clps711x_cpuidle_halt,
+		.exit_latency	= 1,
+	},
+	.state_count	= 1,
+};
+
+static int __init clps711x_cpuidle_probe(struct platform_device *pdev)
+{
+	struct resource *res;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	clps711x_halt = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(clps711x_halt))
+		return PTR_ERR(clps711x_halt);
+
+	return cpuidle_register(&clps711x_idle_driver, NULL);
+}
+
+static struct platform_driver clps711x_cpuidle_driver = {
+	.driver	= {
+		.name	= CLPS711X_CPUIDLE_NAME,
+		.owner	= THIS_MODULE,
+	},
+};
+module_platform_driver_probe(clps711x_cpuidle_driver, clps711x_cpuidle_probe);
+
+MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>");
+MODULE_DESCRIPTION("CLPS711X CPU idle driver");
+MODULE_LICENSE("GPL");