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Commit b9d18dc3 authored by Robert Lee's avatar Robert Lee Committed by Sascha Hauer
Browse files

ARM: imx: Add imx6q cpuidle driver 



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: default avatarRobert Lee <rob.lee@linaro.org>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent ccc12b32

arch/arm/mach-imx/mach-imx6q.c

+19 −0
Original line number Diff line number Diff line
@@ -12,7 +12,9 @@ 


#include <linux/clk.h>

#include <linux/clkdev.h>

#include <linux/cpuidle.h>

#include <linux/delay.h>

#include <linux/export.h>

#include <linux/init.h>

#include <linux/io.h>

#include <linux/irq.h>
@@ -24,6 +26,7 @@ 
#include <linux/pinctrl/machine.h>

#include <linux/phy.h>

#include <linux/micrel_phy.h>

#include <asm/cpuidle.h>

#include <asm/smp_twd.h>

#include <asm/hardware/cache-l2x0.h>

#include <asm/hardware/gic.h>
@@ -31,8 +34,10 @@ 
#include <asm/mach/time.h>

#include <asm/system_misc.h>

#include <mach/common.h>

#include <mach/cpuidle.h>

#include <mach/hardware.h>





void imx6q_restart(char mode, const char *cmd)

{

	struct device_node *np;
@@ -129,6 +134,19 @@ static void __init imx6q_init_machine(void) 
	imx6q_pm_init();

}



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,

};



static void __init imx6q_init_late(void)

{

	imx_cpuidle_init(&imx6q_cpuidle_driver);

}



static void __init imx6q_map_io(void)

{

	imx_lluart_map_io();
@@ -186,6 +204,7 @@ DT_MACHINE_START(IMX6Q, "Freescale i.MX6 Quad (Device Tree)") 
	.handle_irq	= imx6q_handle_irq,

	.timer		= &imx6q_timer,

	.init_machine	= imx6q_init_machine,

	.init_late      = imx6q_init_late,

	.dt_compat	= imx6q_dt_compat,

	.restart	= imx6q_restart,

MACHINE_END