diff options
Diffstat (limited to 'common/motion_lid.c')
| -rw-r--r-- | common/motion_lid.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/common/motion_lid.c b/common/motion_lid.c index d46173918c..3f68480484 100644 --- a/common/motion_lid.c +++ b/common/motion_lid.c @@ -26,6 +26,40 @@ #define CPRINTS(format, args...) cprints(CC_MOTION_LID, format, ## args) #define CPRINTF(format, args...) cprintf(CC_MOTION_LID, format, ## args) +#ifdef CONFIG_LID_ANGLE_TABLET_MODE + +#ifndef CONFIG_LID_ANGLE_INVALID_CHECK +#error "Check for invalid transition needed" +#endif +/* + * We are in tablet mode when the lid angle has been calculated + * to be large. + * + * By default, at boot, we are in tablet mode. + * Once a lid angle is calculated, we will get out of this fake state and enter + * tablet mode only if a high angle has been calculated. + * + * There might be false positives: + * - when the EC enters RO or RW mode. + * - when lid is closed while the hinge is perpendicalar to the floor, we will + * stay in tablet mode. + * + * Tablet mode is defined as the base being behind the lid. We use 2 threshold + * to calculate tablet mode: + * tablet_mode: + * 1 | +-----<----+---------- + * | \/ /\ + * | | | + * 0 |------------------------>----+ + * +------------------+----------+----------+ lid angle + * 0 240 300 360 + */ +#define TABLET_ZONE_LID_ANGLE FLOAT_TO_FP(300) +#define LAPTOP_ZONE_LID_ANGLE FLOAT_TO_FP(240) + +static int tablet_mode = 1; +#endif + #ifdef CONFIG_LID_ANGLE_INVALID_CHECK /* Previous lid_angle. */ static fp_t last_lid_angle_fp = FLOAT_TO_FP(-1); @@ -113,6 +147,9 @@ static int calculate_lid_angle(const vector_3_t base, const vector_3_t lid, fp_t lid_to_base, base_to_hinge; fp_t denominator; int reliable = 1; +#ifdef CONFIG_LID_ANGLE_TABLET_MODE + int new_tablet_mode = tablet_mode; +#endif /* * The angle between lid and base is: @@ -192,6 +229,16 @@ static int calculate_lid_angle(const vector_3_t base, const vector_3_t lid, */ *lid_angle = FP_TO_INT(last_lid_angle_fp + FLOAT_TO_FP(0.5)); +#ifdef CONFIG_LID_ANGLE_TABLET_MODE + if (last_lid_angle_fp > TABLET_ZONE_LID_ANGLE) + new_tablet_mode = 1; + else if (last_lid_angle_fp < LAPTOP_ZONE_LID_ANGLE) + new_tablet_mode = 0; + if (tablet_mode != new_tablet_mode) { + tablet_mode = new_tablet_mode; + hook_notify(HOOK_TABLET_MODE_CHANGE); + } +#endif /* CONFIG_LID_ANGLE_TABLET_MODE */ #else /* CONFIG_LID_ANGLE_INVALID_CHECK */ *lid_angle = FP_TO_INT(lid_to_base_fp + FLOAT_TO_FP(0.5)); #endif @@ -234,8 +281,14 @@ void motion_lid_calc(void) #ifdef CONFIG_LID_ANGLE_UPDATE lid_angle_update(motion_lid_get_angle()); #endif +} +#ifdef CONFIG_LID_ANGLE_TABLET_MODE +int motion_lid_in_tablet_mode(void) +{ + return tablet_mode; } +#endif /*****************************************************************************/ /* Host commands */ |