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/*
* Copyright 2011 Freescale Semiconductor, Inc.
* Copyright 2011 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
*/
#ifndef __ARCH_ARM_PLAT_MXC_CPUIDLE_H__
#define __ARCH_ARM_PLAT_MXC_CPUIDLE_H__
#include <linux/cpuidle.h>
#include <mach/hardware.h>
/* for passing cpuidle state info to the cpuidle driver. */
struct imx_cpuidle_state_data {
enum mxc_cpu_pwr_mode mach_cpu_pwr_state;
char *name;
char *desc;
/* time in uS to exit this idle state */
unsigned int exit_latency;
/* OPTIONAL - power usage of this idle state in mW */
unsigned int power_usage;
/* OPTIONAL - in uS. See drivers/cpuidle/governors/menu.c for usage */
unsigned int target_residency;
};
struct imx_cpuidle_data {
unsigned int num_states;
struct cpuidle_driver *imx_cpuidle_driver;
struct imx_cpuidle_state_data *state_data;
int (*mach_cpuidle)(struct cpuidle_device *dev,
struct cpuidle_state *state);
/* OPTIONAL - parameter of mach_cpuidle_init func below */
void *mach_init_data;
/* OPTIONAL - callback for mach level cpuidle initialization */
int (*mach_cpuidle_init)(void *mach_init_data);
/* OPTIONAL - Search drivers/cpuidle/cpuidle.c for usage */
int (*prepare)(struct cpuidle_device *dev);
};
#ifdef CONFIG_CPU_IDLE
int imx_cpuidle_init(struct imx_cpuidle_data *cpuidle_data);
#else
static inline int imx_cpuidle_init(struct imx_cpuidle_data *cpuidle_data)
{
return -EINVAL;
}
#endif /* CONFIG_CPU_IDLE */
#endif /* __ARCH_ARM_PLAT_MXC_CPUIDLE_H__ */
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