iio: cros_ec: Register to cros_ec_sensorhub when EC supports FIFO

When EC supports FIFO, each IIO device registers a callback, to put samples in the buffer when they arrives from the FIFO. When no FIFO, the user space app needs to call trigger_new, or better register a high precision timer.

Gwendal Grignou committed 6 years ago

Commit aa984f11 parent 69f07937 files · +119 −29Browse files

Showing the changes to include/linux (1 of 7 files). Show all

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include/linux/iio/common/cros_ec_sensors_core.h+9−1

@@ -12,6 +12,7 @@ · 11 unmodified lines
12	12	#include <linux/irqreturn.h>
13	13	#include <linux/platform_data/cros_ec_commands.h>
14	14	#include <linux/platform_data/cros_ec_proto.h>
	15	+#include <linux/platform_data/cros_ec_sensorhub.h>
15	16
16	17	enum {
17	18	CROS_EC_SENSOR_X,
@@ -32,6 +33,8 @@ enum { · 14 unmodified lines
32	33	/* Minimum sampling period to use when device is suspending */
33	34	#define CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY 1000 /* 1 second */
34	35
	36	+typedef irqreturn_t (cros_ec_sensors_capture_t)(int irq, void p);
	37	+
35	38	/**
36	39	* struct cros_ec_sensors_core_state - state data for EC sensors IIO driver
37	40	* @ec: cros EC device structure
@@ -87,9 +90,14 @@ int cros_ec_sensors_read_cmd(struct iio_dev *indio_dev, unsigned long scan_mask, · 49 unmodified lines
87	90
88	91	struct platform_device;
89	92	int cros_ec_sensors_core_init(struct platform_device *pdev,
90		− struct iio_dev *indio_dev, bool physical_device);
	93	+ struct iio_dev *indio_dev, bool physical_device,
	94	+ cros_ec_sensors_capture_t trigger_capture,
	95	+ cros_ec_sensorhub_push_data_cb_t push_data);
91	96
92	97	irqreturn_t cros_ec_sensors_capture(int irq, void *p);
	98	+int cros_ec_sensors_push_data(struct iio_dev *indio_dev,
	99	+ s16 *data,
	100	+ s64 timestamp);
93	101
94	102	int cros_ec_motion_send_host_cmd(struct cros_ec_sensors_core_state *st,
95	103	u16 opt_length);