diff options
| -rw-r--r-- | drivers/input/mouse/synaptics.c | 36 | ||||
| -rw-r--r-- | drivers/input/mouse/synaptics.h | 14 |
2 files changed, 43 insertions, 7 deletions
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index e6e59c59391..a7af8565e2d 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -420,15 +420,39 @@ static void synaptics_pt_create(struct psmouse *psmouse) * Functions to interpret the absolute mode packets ****************************************************************************/ +static void synaptics_mt_state_set(struct synaptics_mt_state *state, int count, + int sgm, int agm) +{ + state->count = count; + state->sgm = sgm; + state->agm = agm; +} + static void synaptics_parse_agm(const unsigned char buf[], - struct synaptics_data *priv) + struct synaptics_data *priv, + struct synaptics_hw_state *hw) { struct synaptics_hw_state *agm = &priv->agm; + int agm_packet_type; + + agm_packet_type = (buf[5] & 0x30) >> 4; + switch (agm_packet_type) { + case 1: + /* Gesture packet: (x, y, z) half resolution */ + agm->w = hw->w; + agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; + agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; + agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; + break; - /* Gesture packet: (x, y, z) at half resolution */ - agm->x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1; - agm->y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1; - agm->z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1; + case 2: + /* AGM-CONTACT packet: (count, sgm, agm) */ + synaptics_mt_state_set(&agm->mt_state, buf[1], buf[2], buf[4]); + break; + + default: + break; + } } static int synaptics_parse_hw_state(const unsigned char buf[], @@ -467,7 +491,7 @@ static int synaptics_parse_hw_state(const unsigned char buf[], if ((SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) && hw->w == 2) { - synaptics_parse_agm(buf, priv); + synaptics_parse_agm(buf, priv, hw); return 1; } diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h index 0ea7616e8fe..20f57dfebed 100644 --- a/drivers/input/mouse/synaptics.h +++ b/drivers/input/mouse/synaptics.h @@ -115,9 +115,18 @@ #define SYN_REDUCED_FILTER_FUZZ 8 /* - * A structure to describe the state of the touchpad hardware (buttons and pad) + * A structure to describe which internal touchpad finger slots are being + * reported in raw packets. */ +struct synaptics_mt_state { + int count; /* num fingers being tracked */ + int sgm; /* which slot is reported by sgm pkt */ + int agm; /* which slot is reported by agm pkt*/ +}; +/* + * A structure to describe the state of the touchpad hardware (buttons and pad) + */ struct synaptics_hw_state { int x; int y; @@ -130,6 +139,9 @@ struct synaptics_hw_state { unsigned int down:1; unsigned char ext_buttons; signed char scroll; + + /* As reported in last AGM-CONTACT packets */ + struct synaptics_mt_state mt_state; }; struct synaptics_data { |