diff options
Diffstat (limited to 'arch/arm/plat-mxc/include/mach/cpuidle.h')
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/cpuidle.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/include/mach/cpuidle.h b/arch/arm/plat-mxc/include/mach/cpuidle.h new file mode 100644 index 00000000000..2bb109e243b --- /dev/null +++ b/arch/arm/plat-mxc/include/mach/cpuidle.h @@ -0,0 +1,56 @@ +/* + * 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__ */ |