msm: idle_stats: Make idle_stats_device.h userspace accessable
Signed-off-by: Lucille Sylvester <lsylvest@codeaurora.org>
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index f95813e..e46dab1 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -423,3 +423,4 @@
header-y += msm_charm.h
header-y += tzcom.h
header-y += qcedev.h
+header-y += idle_stats_device.h
diff --git a/include/linux/idle_stats_device.h b/include/linux/idle_stats_device.h
new file mode 100644
index 0000000..0b1ee39
--- /dev/null
+++ b/include/linux/idle_stats_device.h
@@ -0,0 +1,77 @@
+#ifndef __ARCH_ARM_MACH_MSM_IDLE_STATS_DEVICE_H
+#define __ARCH_ARM_MACH_MSM_IDLE_STATS_DEVICE_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+
+#define MSM_IDLE_STATS_EVENT_NONE 0
+#define MSM_IDLE_STATS_EVENT_BUSY_TIMER_EXPIRED 1
+#define MSM_IDLE_STATS_EVENT_BUSY_TIMER_EXPIRED_RESET 2
+#define MSM_IDLE_STATS_EVENT_COLLECTION_NEARLY_FULL 4
+#define MSM_IDLE_STATS_EVENT_COLLECTION_FULL 8
+
+/*
+ * All time, timer, and time interval values are in units of
+ * microseconds unless stated otherwise.
+ */
+#define MSM_IDLE_STATS_NR_MAX_INTERVALS 200
+
+struct msm_idle_pulse {
+ __s64 busy_start_time;
+ __u32 busy_interval;
+ __u32 wait_interval;
+};
+
+struct msm_idle_read_stats {
+ __u32 event;
+ __s64 return_timestamp;
+ __u32 busy_timer_remaining;
+ __u32 nr_collected;
+ struct msm_idle_pulse pulse_chain[MSM_IDLE_STATS_NR_MAX_INTERVALS];
+};
+
+struct msm_idle_write_stats {
+ __u32 busy_timer;
+ __u32 next_busy_timer;
+};
+
+#define MSM_IDLE_STATS_IOC_MAGIC 0xD8
+#define MSM_IDLE_STATS_IOC_READ_STATS \
+ _IOWR(MSM_IDLE_STATS_IOC_MAGIC, 1, struct msm_idle_read_stats)
+#define MSM_IDLE_STATS_IOC_WRITE_STATS \
+ _IOWR(MSM_IDLE_STATS_IOC_MAGIC, 2, struct msm_idle_write_stats)
+
+#ifdef __KERNEL__
+#include <linux/hrtimer.h>
+#include <linux/mutex.h>
+#include <linux/miscdevice.h>
+
+struct msm_idle_stats_device {
+ const char *name;
+ void (*get_sample)(struct msm_idle_stats_device *device,
+ struct msm_idle_pulse *pulse);
+
+ struct miscdevice miscdev;
+ spinlock_t lock;
+ wait_queue_head_t wait;
+ struct list_head list;
+ struct hrtimer busy_timer;
+ ktime_t busy_timer_interval;
+ ktime_t idle_start;
+ ktime_t remaining_time;
+
+ struct msm_idle_read_stats *stats;
+ struct msm_idle_read_stats stats_vector[2];
+};
+
+int msm_idle_stats_register_device(struct msm_idle_stats_device *device);
+int msm_idle_stats_deregister_device(struct msm_idle_stats_device *device);
+void msm_idle_stats_prepare_idle_start(struct msm_idle_stats_device *device);
+void msm_idle_stats_abort_idle_start(struct msm_idle_stats_device *device);
+void msm_idle_stats_idle_start(struct msm_idle_stats_device *device);
+void msm_idle_stats_idle_end(struct msm_idle_stats_device *device,
+ struct msm_idle_pulse *pulse);
+#endif
+
+#endif /* __ARCH_ARM_MACH_MSM_IDLE_STATS_DEVICE_H */
+