UPSTREAM: common: motion: move gesture actions in motion task.

Change the IRQ interface to allow adding events.
Move code to send the lightbar sequence from gesture.c to motion task.

TEST=compile, works on Ryu.
BRANCH=smaug
BUG=chrome-os-partner:44754

Change-Id: I981ea123ebef0e8e3d6aa320eade89f10e83b6fc
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/296822
Reviewed-by: Alec Berg <alecaberg@chromium.org>
(cherry picked from commit bde89ebc203d9d15ede2cefb3eea8511d1fc3b65)
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/370533

6 files changed, 26 insertions, 18 deletions

diff --git a/board/samus/board.h b/board/samus/board.h
index 463a76be92..260a40bcd6 100644
--- a/board/samus/board.h
+++ b/board/samus/board.h
@@ -200,6 +200,8 @@ void set_pp5000_in_g3(int mask, int enable);
 #define CONFIG_GESTURE_TAP_INNER_WINDOW_T 30
 #define CONFIG_GESTURE_TAP_MIN_INTERSTICE_T 120
 #define CONFIG_GESTURE_TAP_MAX_INTERSTICE_T 500
+/* event 2 to 9 are reserved for hardware interrupt */
+#define CONFIG_GESTURE_TAP_EVENT          TASK_EVENT_CUSTOM(1024)
 
 #define CONFIG_LID_ANGLE_SENSOR_BASE 0
 #define CONFIG_LID_ANGLE_SENSOR_LID 1
diff --git a/common/gesture.c b/common/gesture.c
index 4c155f032a..d8b3383319 100644
--- a/common/gesture.c
+++ b/common/gesture.c
@@ -297,19 +297,14 @@ static void gesture_chipset_suspend(void)
 DECLARE_HOOK(HOOK_CHIPSET_SUSPEND, gesture_chipset_suspend,
 	     GESTURE_HOOK_PRIO);
 
-void gesture_calc(void)
+void gesture_calc(uint32_t *event)
 {
 	/* Only check for gesture if lid is closed and tap detection is on */
 	if (!tap_detection || lid_is_open())
 		return;
 
-	if (gesture_tap_for_battery()) {
-		CPRINTS("Double Tap!");
-		lightbar_sequence(LIGHTBAR_TAP);
-
-		/* Don't need to run motion sense task for a while */
-		task_wait_event(500 * MSEC);
-	}
+	if (gesture_tap_for_battery())
+		*event |= CONFIG_GESTURE_TAP_EVENT;
 }
 
 /*****************************************************************************/
diff --git a/common/motion_sense.c b/common/motion_sense.c
index 737a7b35ac..fcc28b467d 100644
--- a/common/motion_sense.c
+++ b/common/motion_sense.c
@@ -15,6 +15,7 @@
 #include "host_command.h"
 #include "hwtimer.h"
 #include "lid_angle.h"
+#include "lightbar.h"
 #include "math_util.h"
 #include "mkbp_event.h"
 #include "motion_sense.h"
@@ -459,14 +460,14 @@ static int motion_sense_read(struct motion_sensor_t *sensor)
 }
 
 static int motion_sense_process(struct motion_sensor_t *sensor,
-				uint32_t event,
+				uint32_t *event,
 				const timestamp_t *ts,
 				int *flush_needed)
 {
 	int ret = EC_SUCCESS;
 
 #ifdef CONFIG_ACCEL_INTERRUPTS
-	if ((event & TASK_EVENT_MOTION_INTERRUPT_MASK) &&
+	if ((*event & TASK_EVENT_MOTION_INTERRUPT_MASK) &&
 	    (sensor->drv->irq_handler != NULL)) {
 		sensor->drv->irq_handler(sensor, event);
 		sensor->last_collection = ts->le.lo;
@@ -490,7 +491,7 @@ static int motion_sense_process(struct motion_sensor_t *sensor,
 	} else {
 		ret = EC_ERROR_BUSY;
 	}
-	if (event & TASK_EVENT_MOTION_FLUSH_PENDING) {
+	if (*event & TASK_EVENT_MOTION_FLUSH_PENDING) {
 		int flush_pending;
 		flush_pending = atomic_read_clear(&sensor->flush_pending);
 		for (; flush_pending > 0; flush_pending--) {
@@ -564,7 +565,7 @@ void motion_sense_task(void)
 				}
 
 				ts_begin_task = get_time();
-				ret = motion_sense_process(sensor, event,
+				ret = motion_sense_process(sensor, &event,
 						&ts_begin_task,
 						&fifo_flush_needed);
 				if (ret != EC_SUCCESS)
@@ -573,9 +574,17 @@ void motion_sense_task(void)
 			}
 		}
 
+#ifdef CONFIG_GESTURE_DETECTION
 #ifdef CONFIG_GESTURE_SW_DETECTION
 		/* Run gesture recognition engine */
-		gesture_calc();
+		gesture_calc(&event);
+#endif
+#ifdef CONFIG_GESTURE_SENSOR_BATTERY_TAP
+		if (event & CONFIG_GESTURE_TAP_EVENT) {
+			CPRINTS("double tap!");
+			lightbar_sequence(LIGHTBAR_TAP);
+		}
+#endif
 #endif
 #ifdef CONFIG_LID_ANGLE
 		/*
diff --git a/include/accelgyro.h b/include/accelgyro.h
index 46ab68d855..756c2e0e9d 100644
--- a/include/accelgyro.h
+++ b/include/accelgyro.h
@@ -104,9 +104,9 @@ struct accelgyro_drv {
 	 * handler for interrupts triggered by the sensor: it runs in task and
 	 * process the events that triggered an interrupt.
 	 * @s Pointer to sensor data.
-	 * @event Event to process.
+	 * @event Event to process. May add add other events for the next processor.
 	 */
-	int (*irq_handler)(struct motion_sensor_t *s, uint32_t event);
+	int (*irq_handler)(struct motion_sensor_t *s, uint32_t *event);
 #endif
 #ifdef CONFIG_ACCEL_FIFO
 	/**
diff --git a/include/config.h b/include/config.h
index 4f3a9222d2..3a3e37512b 100644
--- a/include/config.h
+++ b/include/config.h
@@ -664,7 +664,7 @@
 /* Sensor sampling interval for gesture recognition */
 #undef CONFIG_GESTURE_SAMPLING_INTERVAL_MS
 
-/* Which sensor to look for gesture recognition */
+/* Which sensor to look for battery tap recognition */
 #undef CONFIG_GESTURE_SENSOR_BATTERY_TAP
 
 /*
@@ -686,6 +686,8 @@
 #undef CONFIG_GESTURE_TAP_MAX_INTERSTICE_T
 #undef CONFIG_GESTURE_TAP_THRES_MG
 
+/* Event generated when battery tap is detected */
+#undef CONFIG_GESTURE_TAP_EVENT
 
 /* Do we want to detect the lid angle? */
 #undef CONFIG_LID_ANGLE
diff --git a/include/gesture.h b/include/gesture.h
index d98dc8cdf8..d480794758 100644
--- a/include/gesture.h
+++ b/include/gesture.h
@@ -9,9 +9,9 @@
 #define __CROS_EC_GESTURE_H
 
 /**
- * Run gesture detection engine.
+ * Run gesture detection engine. Modify the event flag when gestures are found.
  */
-void gesture_calc(void);
+void gesture_calc(uint32_t *event);
 
 /* gesture hooks are triggered after the motion sense hooks. */
 #define GESTURE_HOOK_PRIO (MOTION_SENSE_HOOK_PRIO + 10)