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Subject[PATCH 3/3] ARM: imx: Add imx6q cpuidle driver
Date
Add basic imx6q cpuidle driver.  For now, only basic WFI state is
supported. Deeper idle states will be added in the future.

Signed-off-by: Robert Lee <rob.lee@linaro.org>
---
arch/arm/mach-imx/Makefile | 2 +-
arch/arm/mach-imx/cpuidle-imx6q.c | 33 +++++++++++++++++++++++++++++++++
arch/arm/mach-imx/mach-imx6q.c | 2 ++
3 files changed, 36 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/mach-imx/cpuidle-imx6q.c

diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 84b8976..530f0fd 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -70,7 +70,7 @@ obj-$(CONFIG_CPU_V7) += head-v7.o
AFLAGS_head-v7.o :=-Wa,-march=armv7-a
obj-$(CONFIG_SMP) += platsmp.o
obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o
-obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o mach-imx6q.o
+obj-$(CONFIG_SOC_IMX6Q) += clock-imx6q.o mach-imx6q.o cpuidle-imx6q.o

ifeq ($(CONFIG_PM),y)
obj-$(CONFIG_SOC_IMX6Q) += pm-imx6q.o
diff --git a/arch/arm/mach-imx/cpuidle-imx6q.c b/arch/arm/mach-imx/cpuidle-imx6q.c
new file mode 100644
index 0000000..b74557f
--- /dev/null
+++ b/arch/arm/mach-imx/cpuidle-imx6q.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ * Copyright 2012 Linaro Ltd.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/cpuidle.h>
+#include <linux/export.h>
+#include <asm/cpuidle.h>
+#include <mach/cpuidle.h>
+
+static struct cpuidle_driver imx6q_cpuidle_driver = {
+ .name = "imx6q_cpuidle",
+ .owner = THIS_MODULE,
+ .en_core_tk_irqen = 1,
+ .states[0] = ARM_CPUIDLE_WFI_STATE,
+ .state_count = 1,
+};
+
+int __init imx6q_cpuidle_init(void)
+{
+ imx_cpuidle_set_driver(&imx6q_cpuidle_driver);
+
+ return 0;
+}
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index da6c1d9..6f31ca6 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -29,6 +29,7 @@
#include <asm/system_misc.h>
#include <mach/common.h>
#include <mach/hardware.h>
+#include <mach/cpuidle.h>

void imx6q_restart(char mode, const char *cmd)
{
@@ -84,6 +85,7 @@ static void __init imx6q_init_machine(void)
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);

imx6q_pm_init();
+ imx6q_cpuidle_init();
}

static void __init imx6q_map_io(void)
--
1.7.10


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