From 3db5b9f782b50a309fe0fb89fb890f6b4f66d9ae Mon Sep 17 00:00:00 2001 From: Masaki Ota Date: Fri, 27 Mar 2015 20:57:52 -0700 Subject: [PATCH] Input: ALPS - add support for SS4 touchpad devices This change adds support for SS4 touchpad devices as ALPS_PROTO_V8 protocol. They are real multi-touch devices and can be found in TOSHIBA Tecra C50. Signed-off-by: Masaki Ota Acked-by: Hans de Goede Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/alps.c | 329 ++++++++++++++++++++++++++++++++++++- drivers/input/mouse/alps.h | 78 ++++++++- 2 files changed, 403 insertions(+), 4 deletions(-) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index c7924b6f7d4b..ad741c04936d 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -153,12 +153,18 @@ static const struct alps_protocol_info alps_v7_protocol_data = { ALPS_PROTO_V7, 0x48, 0x48, ALPS_DUALPOINT }; +static const struct alps_protocol_info alps_v8_protocol_data = { + ALPS_PROTO_V8, 0x18, 0x18, 0 +}; + static void alps_set_abs_params_st(struct alps_data *priv, struct input_dev *dev1); static void alps_set_abs_params_mt(struct alps_data *priv, struct input_dev *dev1); static void alps_set_abs_params_v7(struct alps_data *priv, struct input_dev *dev1); +static void alps_set_abs_params_ss4_v2(struct alps_data *priv, + struct input_dev *dev1); /* Packet formats are described in Documentation/input/alps.txt */ @@ -1087,6 +1093,176 @@ static void alps_process_packet_v7(struct psmouse *psmouse) alps_process_touchpad_packet_v7(psmouse); } +unsigned char alps_get_pkt_id_ss4_v2(unsigned char *byte) +{ + unsigned char pkt_id = SS4_PACKET_ID_IDLE; + + if (byte[0] == 0x18 && byte[1] == 0x10 && byte[2] == 0x00 && + (byte[3] & 0x88) == 0x08 && byte[4] == 0x10 && byte[5] == 0x00) { + pkt_id = SS4_PACKET_ID_IDLE; + } else if (!(byte[3] & 0x10)) { + pkt_id = SS4_PACKET_ID_ONE; + } else if (!(byte[3] & 0x20)) { + pkt_id = SS4_PACKET_ID_TWO; + } else { + pkt_id = SS4_PACKET_ID_MULTI; + } + + return pkt_id; +} + +static int alps_decode_ss4_v2(struct alps_fields *f, + unsigned char *p, struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char pkt_id; + unsigned int no_data_x, no_data_y; + + pkt_id = alps_get_pkt_id_ss4_v2(p); + + /* Current packet is 1Finger coordinate packet */ + switch (pkt_id) { + case SS4_PACKET_ID_ONE: + f->mt[0].x = SS4_1F_X_V2(p); + f->mt[0].y = SS4_1F_Y_V2(p); + f->pressure = ((SS4_1F_Z_V2(p)) * 2) & 0x7f; + f->fingers = 1; + f->first_mp = 0; + f->is_mp = 0; + break; + + case SS4_PACKET_ID_TWO: + if (priv->flags & ALPS_BUTTONPAD) { + f->mt[0].x = SS4_BTL_MF_X_V2(p, 0); + f->mt[0].y = SS4_BTL_MF_Y_V2(p, 0); + f->mt[1].x = SS4_BTL_MF_X_V2(p, 1); + f->mt[1].y = SS4_BTL_MF_Y_V2(p, 1); + } else { + f->mt[0].x = SS4_STD_MF_X_V2(p, 0); + f->mt[0].y = SS4_STD_MF_Y_V2(p, 0); + f->mt[1].x = SS4_STD_MF_X_V2(p, 1); + f->mt[1].y = SS4_STD_MF_Y_V2(p, 1); + } + f->pressure = SS4_MF_Z_V2(p, 0) ? 0x30 : 0; + + if (SS4_IS_MF_CONTINUE(p)) { + f->first_mp = 1; + } else { + f->fingers = 2; + f->first_mp = 0; + } + f->is_mp = 0; + + break; + + case SS4_PACKET_ID_MULTI: + if (priv->flags & ALPS_BUTTONPAD) { + f->mt[2].x = SS4_BTL_MF_X_V2(p, 0); + f->mt[2].y = SS4_BTL_MF_Y_V2(p, 0); + f->mt[3].x = SS4_BTL_MF_X_V2(p, 1); + f->mt[3].y = SS4_BTL_MF_Y_V2(p, 1); + no_data_x = SS4_MFPACKET_NO_AX_BL; + no_data_y = SS4_MFPACKET_NO_AY_BL; + } else { + f->mt[2].x = SS4_STD_MF_X_V2(p, 0); + f->mt[2].y = SS4_STD_MF_Y_V2(p, 0); + f->mt[3].x = SS4_STD_MF_X_V2(p, 1); + f->mt[3].y = SS4_STD_MF_Y_V2(p, 1); + no_data_x = SS4_MFPACKET_NO_AX; + no_data_y = SS4_MFPACKET_NO_AY; + } + + f->first_mp = 0; + f->is_mp = 1; + + if (SS4_IS_5F_DETECTED(p)) { + f->fingers = 5; + } else if (f->mt[3].x == no_data_x && + f->mt[3].y == no_data_y) { + f->mt[3].x = 0; + f->mt[3].y = 0; + f->fingers = 3; + } else { + f->fingers = 4; + } + break; + + case SS4_PACKET_ID_IDLE: + default: + memset(f, 0, sizeof(struct alps_fields)); + break; + } + + f->left = !!(SS4_BTN_V2(p) & 0x01); + if (!(priv->flags & ALPS_BUTTONPAD)) { + f->right = !!(SS4_BTN_V2(p) & 0x02); + f->middle = !!(SS4_BTN_V2(p) & 0x04); + } + + return 0; +} + +static void alps_process_packet_ss4_v2(struct psmouse *psmouse) +{ + struct alps_data *priv = psmouse->private; + unsigned char *packet = psmouse->packet; + struct input_dev *dev = psmouse->dev; + struct alps_fields *f = &priv->f; + + memset(f, 0, sizeof(struct alps_fields)); + priv->decode_fields(f, packet, psmouse); + if (priv->multi_packet) { + /* + * Sometimes the first packet will indicate a multi-packet + * sequence, but sometimes the next multi-packet would not + * come. Check for this, and when it happens process the + * position packet as usual. + */ + if (f->is_mp) { + /* Now process the 1st packet */ + priv->decode_fields(f, priv->multi_data, psmouse); + } else { + priv->multi_packet = 0; + } + } + + /* + * "f.is_mp" would always be '0' after merging the 1st and 2nd packet. + * When it is set, it means 2nd packet comes without 1st packet come. + */ + if (f->is_mp) + return; + + /* Save the first packet */ + if (!priv->multi_packet && f->first_mp) { + priv->multi_packet = 1; + memcpy(priv->multi_data, packet, sizeof(priv->multi_data)); + return; + } + + priv->multi_packet = 0; + + alps_report_mt_data(psmouse, (f->fingers <= 4) ? f->fingers : 4); + + input_mt_report_finger_count(dev, f->fingers); + + input_report_key(dev, BTN_LEFT, f->left); + input_report_key(dev, BTN_RIGHT, f->right); + input_report_key(dev, BTN_MIDDLE, f->middle); + + input_report_abs(dev, ABS_PRESSURE, f->pressure); + input_sync(dev); +} + +static bool alps_is_valid_package_ss4_v2(struct psmouse *psmouse) +{ + if (psmouse->pktcnt == 4 && ((psmouse->packet[3] & 0x08) != 0x08)) + return false; + if (psmouse->pktcnt == 6 && ((psmouse->packet[5] & 0x10) != 0x0)) + return false; + return true; +} + static DEFINE_MUTEX(alps_mutex); static void alps_register_bare_ps2_mouse(struct work_struct *work) @@ -1307,8 +1483,12 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) * a device connected to the external PS/2 port. Because bare PS/2 * protocol does not have enough constant bits to self-synchronize * properly we only do this if the device is fully synchronized. + * Can not distinguish V8's first byte from PS/2 packet's */ - if (!psmouse->out_of_sync_cnt && (psmouse->packet[0] & 0xc8) == 0x08) { + if (priv->proto_version != ALPS_PROTO_V8 && + !psmouse->out_of_sync_cnt && + (psmouse->packet[0] & 0xc8) == 0x08) { + if (psmouse->pktcnt == 3) { alps_report_bare_ps2_packet(psmouse, psmouse->packet, true); @@ -1356,8 +1536,10 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) return PSMOUSE_BAD_DATA; } - if (priv->proto_version == ALPS_PROTO_V7 && - !alps_is_valid_package_v7(psmouse)) { + if ((priv->proto_version == ALPS_PROTO_V7 && + !alps_is_valid_package_v7(psmouse)) || + (priv->proto_version == ALPS_PROTO_V8 && + !alps_is_valid_package_ss4_v2(psmouse))) { psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", psmouse->pktcnt - 1, psmouse->packet[psmouse->pktcnt - 1]); @@ -2132,6 +2314,88 @@ error: return -1; } +static int alps_get_otp_values_ss4_v2(struct psmouse *psmouse, + unsigned char index, unsigned char otp[]) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + + switch (index) { + case 0: + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) + return -1; + + break; + + case 1: + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETPOLL) || + ps2_command(ps2dev, otp, PSMOUSE_CMD_GETINFO)) + return -1; + + break; + } + + return 0; +} + +int alps_update_device_area_ss4_v2(unsigned char otp[][4], + struct alps_data *priv) +{ + int num_x_electrode; + int num_y_electrode; + int x_pitch, y_pitch, x_phys, y_phys; + + num_x_electrode = SS4_NUMSENSOR_XOFFSET + (otp[1][0] & 0x0F); + num_y_electrode = SS4_NUMSENSOR_YOFFSET + ((otp[1][0] >> 4) & 0x0F); + + priv->x_max = (num_x_electrode - 1) * SS4_COUNT_PER_ELECTRODE; + priv->y_max = (num_y_electrode - 1) * SS4_COUNT_PER_ELECTRODE; + + x_pitch = ((otp[1][2] >> 2) & 0x07) + SS4_MIN_PITCH_MM; + y_pitch = ((otp[1][2] >> 5) & 0x07) + SS4_MIN_PITCH_MM; + + x_phys = x_pitch * (num_x_electrode - 1); /* In 0.1 mm units */ + y_phys = y_pitch * (num_y_electrode - 1); /* In 0.1 mm units */ + + priv->x_res = priv->x_max * 10 / x_phys; /* units / mm */ + priv->y_res = priv->y_max * 10 / y_phys; /* units / mm */ + + return 0; +} + +int alps_update_btn_info_ss4_v2(unsigned char otp[][4], struct alps_data *priv) +{ + + unsigned char is_btnless; + + is_btnless = (otp[1][1] >> 3) & 0x01; + + if (is_btnless) + priv->flags |= ALPS_BUTTONPAD; + + return 0; +} + +static int alps_set_defaults_ss4_v2(struct psmouse *psmouse, + struct alps_data *priv) +{ + unsigned char otp[2][4]; + + memset(otp, 0, sizeof(otp)); + + if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) || + alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0])) + return -1; + + alps_update_device_area_ss4_v2(otp, priv); + + alps_update_btn_info_ss4_v2(otp, priv); + + return 0; +} + static int alps_dolphin_get_device_area(struct psmouse *psmouse, struct alps_data *priv) { @@ -2224,6 +2488,35 @@ error: return ret; } +static int alps_hw_init_ss4_v2(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + char param[2] = {0x64, 0x28}; + int ret = -1; + + /* enter absolute mode */ + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) { + goto error; + } + + /* T.B.D. Decread noise packet number, delete in the future */ + if (alps_exit_command_mode(psmouse) || + alps_enter_command_mode(psmouse) || + alps_command_mode_write_reg(psmouse, 0x001D, 0x20)) { + goto error; + } + alps_exit_command_mode(psmouse); + + return ps2_command(ps2dev, NULL, PSMOUSE_CMD_ENABLE); + +error: + alps_exit_command_mode(psmouse); + return ret; +} + static int alps_set_protocol(struct psmouse *psmouse, struct alps_data *priv, const struct alps_protocol_info *protocol) @@ -2323,6 +2616,19 @@ static int alps_set_protocol(struct psmouse *psmouse, priv->flags |= ALPS_BUTTONPAD; break; + + case ALPS_PROTO_V8: + priv->hw_init = alps_hw_init_ss4_v2; + priv->process_packet = alps_process_packet_ss4_v2; + priv->decode_fields = alps_decode_ss4_v2; + priv->set_abs_params = alps_set_abs_params_ss4_v2; + priv->nibble_commands = alps_v3_nibble_commands; + priv->addr_command = PSMOUSE_CMD_RESET_WRAP; + + if (alps_set_defaults_ss4_v2(psmouse, priv)) + return -EIO; + + break; } return 0; @@ -2391,6 +2697,9 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) } else if (ec[0] == 0x88 && ec[1] == 0x07 && ec[2] >= 0x90 && ec[2] <= 0x9d) { protocol = &alps_v3_protocol_data; + } else if (e7[0] == 0x73 && e7[1] == 0x03 && + e7[2] == 0x14 && ec[1] == 0x02) { + protocol = &alps_v8_protocol_data; } else { psmouse_dbg(psmouse, "Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec); @@ -2471,6 +2780,20 @@ static void alps_set_abs_params_v7(struct alps_data *priv, { alps_set_abs_params_mt_common(priv, dev1); + input_mt_init_slots(dev1, MAX_TOUCHES, + INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | + INPUT_MT_TRACK); + + set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); +} + +static void alps_set_abs_params_ss4_v2(struct alps_data *priv, + struct input_dev *dev1) +{ + alps_set_abs_params_mt_common(priv, dev1); + input_set_abs_params(dev1, ABS_PRESSURE, 0, 127, 0, 0); + set_bit(BTN_TOOL_QUINTTAP, dev1->keybit); + input_mt_init_slots(dev1, MAX_TOUCHES, INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED | INPUT_MT_TRACK); diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h index 02513c0502fc..6dfdccc3a7c6 100644 --- a/drivers/input/mouse/alps.h +++ b/drivers/input/mouse/alps.h @@ -22,13 +22,89 @@ #define ALPS_PROTO_V5 0x500 #define ALPS_PROTO_V6 0x600 #define ALPS_PROTO_V7 0x700 /* t3btl t4s */ +#define ALPS_PROTO_V8 0x800 /* SS4btl SS4s */ -#define MAX_TOUCHES 2 +#define MAX_TOUCHES 4 #define DOLPHIN_COUNT_PER_ELECTRODE 64 #define DOLPHIN_PROFILE_XOFFSET 8 /* x-electrode offset */ #define DOLPHIN_PROFILE_YOFFSET 1 /* y-electrode offset */ +/* + * enum SS4_PACKET_ID - defines the packet type for V8 + * SS4_PACKET_ID_IDLE: There's no finger and no button activity. + * SS4_PACKET_ID_ONE: There's one finger on touchpad + * or there's button activities. + * SS4_PACKET_ID_TWO: There's two or more fingers on touchpad + * SS4_PACKET_ID_MULTI: There's three or more fingers on touchpad +*/ +enum SS4_PACKET_ID { + SS4_PACKET_ID_IDLE = 0, + SS4_PACKET_ID_ONE, + SS4_PACKET_ID_TWO, + SS4_PACKET_ID_MULTI, +}; + +#define SS4_COUNT_PER_ELECTRODE 256 +#define SS4_NUMSENSOR_XOFFSET 7 +#define SS4_NUMSENSOR_YOFFSET 7 +#define SS4_MIN_PITCH_MM 50 + +#define SS4_MASK_NORMAL_BUTTONS 0x07 + +#define SS4_1F_X_V2(_b) ((_b[0] & 0x0007) | \ + ((_b[1] << 3) & 0x0078) | \ + ((_b[1] << 2) & 0x0380) | \ + ((_b[2] << 5) & 0x1C00) \ + ) + +#define SS4_1F_Y_V2(_b) (((_b[2]) & 0x000F) | \ + ((_b[3] >> 2) & 0x0030) | \ + ((_b[4] << 6) & 0x03C0) | \ + ((_b[4] << 5) & 0x0C00) \ + ) + +#define SS4_1F_Z_V2(_b) (((_b[5]) & 0x0F) | \ + ((_b[5] >> 1) & 0x70) | \ + ((_b[4]) & 0x80) \ + ) + +#define SS4_1F_LFB_V2(_b) (((_b[2] >> 4) & 0x01) == 0x01) + +#define SS4_MF_LF_V2(_b, _i) ((_b[1 + (_i) * 3] & 0x0004) == 0x0004) + +#define SS4_BTN_V2(_b) ((_b[0] >> 5) & SS4_MASK_NORMAL_BUTTONS) + +#define SS4_STD_MF_X_V2(_b, _i) (((_b[0 + (_i) * 3] << 5) & 0x00E0) | \ + ((_b[1 + _i * 3] << 5) & 0x1F00) \ + ) + +#define SS4_STD_MF_Y_V2(_b, _i) (((_b[1 + (_i) * 3] << 3) & 0x0010) | \ + ((_b[2 + (_i) * 3] << 5) & 0x01E0) | \ + ((_b[2 + (_i) * 3] << 4) & 0x0E00) \ + ) + +#define SS4_BTL_MF_X_V2(_b, _i) (SS4_STD_MF_X_V2(_b, _i) | \ + ((_b[0 + (_i) * 3] >> 3) & 0x0010) \ + ) + +#define SS4_BTL_MF_Y_V2(_b, _i) (SS4_STD_MF_Y_V2(_b, _i) | \ + ((_b[0 + (_i) * 3] >> 3) & 0x0008) \ + ) + +#define SS4_MF_Z_V2(_b, _i) (((_b[1 + (_i) * 3]) & 0x0001) | \ + ((_b[1 + (_i) * 3] >> 1) & 0x0002) \ + ) + +#define SS4_IS_MF_CONTINUE(_b) ((_b[2] & 0x10) == 0x10) +#define SS4_IS_5F_DETECTED(_b) ((_b[2] & 0x10) == 0x10) + + +#define SS4_MFPACKET_NO_AX 8160 /* X-Coordinate value */ +#define SS4_MFPACKET_NO_AY 4080 /* Y-Coordinate value */ +#define SS4_MFPACKET_NO_AX_BL 8176 /* Buttonless X-Coordinate value */ +#define SS4_MFPACKET_NO_AY_BL 4088 /* Buttonless Y-Coordinate value */ + /* * enum V7_PACKET_ID - defines the packet type for V7 * V7_PACKET_ID_IDLE: There's no finger and no button activity.