/*
- * Copyright (C) 2014 Intel Corporation.
+ * Copyright (C) 2014-2015 Intel Corporation.
*/
#ifndef __COMMON_H__
#define __COMMON_H__
#define MAX_DEVICES 9 /* Check iio devices 0 to MAX_DEVICES-1 */
-#define MAX_SENSORS 11 /* We can handle as many sensors */
+#define MAX_SENSORS 12 /* We can handle as many sensors */
#define MAX_CHANNELS 4 /* We can handle as many channels per sensor */
+#define MAX_EVENTS 2 /* We can handle as many events per channel */
#define MAX_TRIGGERS 8 /* Check for triggers 0 to MAX_TRIGGERS-1 */
#define DEV_FILE_PATH "/dev/iio:device%d"
#define ENABLE_PATH BASE_PATH "buffer/enable"
#define NAME_PATH BASE_PATH "name"
#define TRIGGER_PATH BASE_PATH "trigger/current_trigger"
+#define EVENTS_PATH BASE_PATH "events/"
#define SENSOR_ENABLE_PATH BASE_PATH "in_%s_en"
#define SENSOR_OFFSET_PATH BASE_PATH "in_%s_offset"
#define SENSOR_SCALE_PATH BASE_PATH "in_%s_scale"
#define MODE_AUTO 0 /* autodetect */
#define MODE_POLL 1
#define MODE_TRIGGER 2
+#define MODE_EVENT 3
+
+typedef struct
+{
+ const char *type; /* event type; e.g: transition */
+ const char *dir; /* event direction; e.g: rising */
+
+ /* sysfs entries located in /sys/bus/iio/devices/iio:deviceX/events/ */
+ const char *ev_en_path;
+ const char *ev_value_path;
+}
+event_descriptor_t;
+
typedef struct
{
const char *raw_path; /* _raw sysfs file name */
const char *input_path; /* _input sysfs file name */
const char *scale_path; /* _scale sysfs file name */
+
+ const int num_events;
+ event_descriptor_t event[MAX_EVENTS];
}
channel_descriptor_t;
* Optional correction scale read from a property such as iio.accel.x.scale, allowing late compensation of
* problems such as misconfigured axes ; set to 1 by default. Applied at the end of the scaling process.
*/
+ int raw_path_present; /* Flag signalling the presence of in_<sens>_<axis>_raw file */
+ int input_path_present; /* Flag signalling the presence of in_<sens>_input file */
}
channel_info_t;
*/
int needs_enable;
+ int semi_arbitrated_rate; /* Arbitrated sampling rate before we considered other sensors co-located on the same iio device */
}
sensor_info_t;
extern struct sensor_t sensor_desc[MAX_SENSORS];
extern sensor_info_t sensor[MAX_SENSORS];
extern sensor_catalog_entry_t sensor_catalog[];
+extern unsigned int catalog_size;
+
+/* Needed both in sensors and activity HALs */
+void check_trig_sensors (int i, char *sysfs_file, char map[catalog_size]);
+void check_poll_sensors (int i, char *sysfs_file, char map[catalog_size]);
+void check_event_sensors (int i, char *sysfs_file, char map[catalog_size]);
+void discover_sensors(int dev_num, char *sysfs_base_path, char map[catalog_size],
+ void (*discover_sensor)(int, char*, char*));
+
+/*
+ * Macros associating iio sysfs entries to to sensor types ; see
+ * linux/kernel/drivers/iio/industrialio-core.c and
+ * hardware/libhardware/include/hardware/sensor.h
+ */
+
+#define DECLARE_VOID_CHANNEL(tag) \
+ tag, \
+ "", \
+ "", \
+ "", \
+ "", \
+ "", \
+ "", \
+
+#define DECLARE_CHANNEL(tag, spacer, name) \
+ name, \
+ "in_"tag spacer name"_en", \
+ "in_"tag spacer name"_type", \
+ "in_"tag spacer name"_index", \
+ "in_"tag spacer name"_raw", \
+ "in_"tag spacer name"_input", \
+ "in_"tag spacer name"_scale", \
+ 0, {{0}},
+
+#define DECLARE_NAMED_CHANNEL(tag, name) DECLARE_CHANNEL(tag, "_", name)
+
+#define DECLARE_GENERIC_CHANNEL(tag) DECLARE_CHANNEL(tag, "", "")
+
+#define DECLARE_EVENT(tag, spacer1, name, spacer2, type, spacer3, dir) \
+ type, dir, \
+ "in_"tag spacer1 name spacer2 type spacer3 dir"_en", \
+ "in_"tag spacer1 name spacer2 type spacer3 dir"_value", \
+
+#define DECLARE_GENERIC_EVENT(tag, name, type, dir) \
+ DECLARE_EVENT(tag, "_", name, "_", type, "_", dir)
+#define DECLARE_NAMED_EVENT(tag, name) \
+ DECLARE_EVENT(tag, "_", name, "","","","")
#endif