diff options
Diffstat (limited to 'drivers/input/mouse/elantech.c')
| -rw-r--r-- | drivers/input/mouse/elantech.c | 734 |
1 files changed, 621 insertions, 113 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 32503565faf9..09b93b11a274 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -10,8 +10,6 @@ * Trademarks are the property of their respective owners. */ -#define pr_fmt(fmt) KBUILD_BASENAME ": " fmt - #include <linux/delay.h> #include <linux/slab.h> #include <linux/module.h> @@ -25,13 +23,10 @@ #define elantech_debug(fmt, ...) \ do { \ if (etd->debug) \ - printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__); \ + psmouse_printk(KERN_DEBUG, psmouse, \ + fmt, ##__VA_ARGS__); \ } while (0) -static bool force_elantech; -module_param_named(force_elantech, force_elantech, bool, 0644); -MODULE_PARM_DESC(force_elantech, "Force the Elantech PS/2 protocol extension to be used, 1 = enabled, 0 = disabled (default)."); - /* * Send a Synaptics style sliced query command */ @@ -40,7 +35,7 @@ static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, { if (psmouse_sliced_command(psmouse, c) || ps2_command(&psmouse->ps2dev, param, PSMOUSE_CMD_GETINFO)) { - pr_err("synaptics_send_cmd query 0x%02x failed.\n", c); + psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c); return -1; } @@ -69,7 +64,7 @@ static int elantech_ps2_command(struct psmouse *psmouse, } while (tries > 0); if (rc) - pr_err("ps2 command 0x%02x failed.\n", command); + psmouse_err(psmouse, "ps2 command 0x%02x failed.\n", command); return rc; } @@ -84,7 +79,7 @@ static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg, unsigned char param[3]; int rc = 0; - if (reg < 0x10 || reg > 0x26) + if (reg < 0x07 || reg > 0x26) return -1; if (reg > 0x11 && reg < 0x20) @@ -108,12 +103,24 @@ static int elantech_read_reg(struct psmouse *psmouse, unsigned char reg, rc = -1; } break; + + case 3 ... 4: + if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) || + elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, reg) || + elantech_ps2_command(psmouse, param, PSMOUSE_CMD_GETINFO)) { + rc = -1; + } + break; } if (rc) - pr_err("failed to read register 0x%02x.\n", reg); - else + psmouse_err(psmouse, "failed to read register 0x%02x.\n", reg); + else if (etd->hw_version != 4) *val = param[0]; + else + *val = param[1]; return rc; } @@ -127,7 +134,7 @@ static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg, struct elantech_data *etd = psmouse->private; int rc = 0; - if (reg < 0x10 || reg > 0x26) + if (reg < 0x07 || reg > 0x26) return -1; if (reg > 0x11 && reg < 0x20) @@ -154,11 +161,38 @@ static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg, rc = -1; } break; + + case 3: + if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) || + elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, reg) || + elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, val) || + elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) { + rc = -1; + } + break; + + case 4: + if (elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) || + elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, reg) || + elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, ETP_REGISTER_READWRITE) || + elantech_ps2_command(psmouse, NULL, ETP_PS2_CUSTOM_COMMAND) || + elantech_ps2_command(psmouse, NULL, val) || + elantech_ps2_command(psmouse, NULL, PSMOUSE_CMD_SETSCALE11)) { + rc = -1; + } + break; } if (rc) - pr_err("failed to write register 0x%02x with value 0x%02x.\n", - reg, val); + psmouse_err(psmouse, + "failed to write register 0x%02x with value 0x%02x.\n", + reg, val); return rc; } @@ -166,13 +200,13 @@ static int elantech_write_reg(struct psmouse *psmouse, unsigned char reg, /* * Dump a complete mouse movement packet to the syslog */ -static void elantech_packet_dump(unsigned char *packet, int size) +static void elantech_packet_dump(struct psmouse *psmouse) { int i; - printk(KERN_DEBUG pr_fmt("PS/2 packet [")); - for (i = 0; i < size; i++) - printk("%s0x%02x ", (i) ? ", " : " ", packet[i]); + psmouse_printk(KERN_DEBUG, psmouse, "PS/2 packet ["); + for (i = 0; i < psmouse->pktsize; i++) + printk("%s0x%02x ", i ? ", " : " ", psmouse->packet[i]); printk("]\n"); } @@ -223,7 +257,7 @@ static void elantech_report_absolute_v1(struct psmouse *psmouse) input_report_abs(dev, ABS_X, ((packet[1] & 0x0c) << 6) | packet[2]); input_report_abs(dev, ABS_Y, - ETP_YMAX_V1 - (((packet[1] & 0x03) << 8) | packet[3])); + etd->y_max - (((packet[1] & 0x03) << 8) | packet[3])); } input_report_key(dev, BTN_TOOL_FINGER, fingers == 1); @@ -233,7 +267,7 @@ static void elantech_report_absolute_v1(struct psmouse *psmouse) input_report_key(dev, BTN_RIGHT, packet[0] & 0x02); if (etd->fw_version < 0x020000 && - (etd->capabilities & ETP_CAP_HAS_ROCKER)) { + (etd->capabilities[0] & ETP_CAP_HAS_ROCKER)) { /* rocker up */ input_report_key(dev, BTN_FORWARD, packet[0] & 0x40); /* rocker down */ @@ -273,11 +307,11 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) struct elantech_data *etd = psmouse->private; struct input_dev *dev = psmouse->dev; unsigned char *packet = psmouse->packet; - unsigned int fingers, x1 = 0, y1 = 0, x2 = 0, y2 = 0, width = 0, pres = 0; + unsigned int fingers, x1 = 0, y1 = 0, x2 = 0, y2 = 0; + unsigned int width = 0, pres = 0; /* byte 0: n1 n0 . . . . R L */ fingers = (packet[0] & 0xc0) >> 6; - input_report_key(dev, BTN_TOUCH, fingers != 0); switch (fingers) { case 3: @@ -290,18 +324,15 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) /* pass through... */ case 1: /* - * byte 1: . . . . . x10 x9 x8 + * byte 1: . . . . x11 x10 x9 x8 * byte 2: x7 x6 x5 x4 x4 x2 x1 x0 */ - x1 = ((packet[1] & 0x07) << 8) | packet[2]; + x1 = ((packet[1] & 0x0f) << 8) | packet[2]; /* - * byte 4: . . . . . . y9 y8 + * byte 4: . . . . y11 y10 y9 y8 * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 */ - y1 = ETP_YMAX_V2 - (((packet[4] & 0x03) << 8) | packet[5]); - - input_report_abs(dev, ABS_X, x1); - input_report_abs(dev, ABS_Y, y1); + y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4); @@ -314,22 +345,18 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) * byte 0: . . ay8 ax8 . . . . * byte 1: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0 */ - x1 = ((packet[0] & 0x10) << 4) | packet[1]; + x1 = (((packet[0] & 0x10) << 4) | packet[1]) << 2; /* byte 2: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 */ - y1 = ETP_2FT_YMAX - (((packet[0] & 0x20) << 3) | packet[2]); + y1 = etd->y_max - + ((((packet[0] & 0x20) << 3) | packet[2]) << 2); /* * byte 3: . . by8 bx8 . . . . * byte 4: bx7 bx6 bx5 bx4 bx3 bx2 bx1 bx0 */ - x2 = ((packet[3] & 0x10) << 4) | packet[4]; + x2 = (((packet[3] & 0x10) << 4) | packet[4]) << 2; /* byte 5: by7 by8 by5 by4 by3 by2 by1 by0 */ - y2 = ETP_2FT_YMAX - (((packet[3] & 0x20) << 3) | packet[5]); - /* - * For compatibility with the X Synaptics driver scale up - * one coordinate and report as ordinary mouse movent - */ - input_report_abs(dev, ABS_X, x1 << 2); - input_report_abs(dev, ABS_Y, y1 << 2); + y2 = etd->y_max - + ((((packet[3] & 0x20) << 3) | packet[5]) << 2); /* Unknown so just report sensible values */ pres = 127; @@ -337,6 +364,11 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) break; } + input_report_key(dev, BTN_TOUCH, fingers != 0); + if (fingers != 0) { + input_report_abs(dev, ABS_X, x1); + input_report_abs(dev, ABS_Y, y1); + } elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); input_report_key(dev, BTN_TOOL_FINGER, fingers == 1); input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2); @@ -352,7 +384,208 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) input_sync(dev); } -static int elantech_check_parity_v1(struct psmouse *psmouse) +/* + * Interpret complete data packets and report absolute mode input events for + * hardware version 3. (12 byte packets for two fingers) + */ +static void elantech_report_absolute_v3(struct psmouse *psmouse, + int packet_type) +{ + struct input_dev *dev = psmouse->dev; + struct elantech_data *etd = psmouse->private; + unsigned char *packet = psmouse->packet; + unsigned int fingers = 0, x1 = 0, y1 = 0, x2 = 0, y2 = 0; + unsigned int width = 0, pres = 0; + + /* byte 0: n1 n0 . . . . R L */ + fingers = (packet[0] & 0xc0) >> 6; + + switch (fingers) { + case 3: + case 1: + /* + * byte 1: . . . . x11 x10 x9 x8 + * byte 2: x7 x6 x5 x4 x4 x2 x1 x0 + */ + x1 = ((packet[1] & 0x0f) << 8) | packet[2]; + /* + * byte 4: . . . . y11 y10 y9 y8 + * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 + */ + y1 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); + break; + + case 2: + if (packet_type == PACKET_V3_HEAD) { + /* + * byte 1: . . . . ax11 ax10 ax9 ax8 + * byte 2: ax7 ax6 ax5 ax4 ax3 ax2 ax1 ax0 + */ + etd->mt[0].x = ((packet[1] & 0x0f) << 8) | packet[2]; + /* + * byte 4: . . . . ay11 ay10 ay9 ay8 + * byte 5: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0 + */ + etd->mt[0].y = etd->y_max - + (((packet[4] & 0x0f) << 8) | packet[5]); + /* + * wait for next packet + */ + return; + } + + /* packet_type == PACKET_V3_TAIL */ + x1 = etd->mt[0].x; + y1 = etd->mt[0].y; + x2 = ((packet[1] & 0x0f) << 8) | packet[2]; + y2 = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); + break; + } + + pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); + width = ((packet[0] & 0x30) >> 2) | ((packet[3] & 0x30) >> 4); + + input_report_key(dev, BTN_TOUCH, fingers != 0); + if (fingers != 0) { + input_report_abs(dev, ABS_X, x1); + input_report_abs(dev, ABS_Y, y1); + } + elantech_report_semi_mt_data(dev, fingers, x1, y1, x2, y2); + input_report_key(dev, BTN_TOOL_FINGER, fingers == 1); + input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2); + input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3); + input_report_key(dev, BTN_LEFT, packet[0] & 0x01); + input_report_key(dev, BTN_RIGHT, packet[0] & 0x02); + input_report_abs(dev, ABS_PRESSURE, pres); + input_report_abs(dev, ABS_TOOL_WIDTH, width); + + input_sync(dev); +} + +static void elantech_input_sync_v4(struct psmouse *psmouse) +{ + struct input_dev *dev = psmouse->dev; + unsigned char *packet = psmouse->packet; + + input_report_key(dev, BTN_LEFT, packet[0] & 0x01); + input_report_key(dev, BTN_RIGHT, packet[0] & 0x02); + input_mt_report_pointer_emulation(dev, true); + input_sync(dev); +} + +static void process_packet_status_v4(struct psmouse *psmouse) +{ + struct input_dev *dev = psmouse->dev; + unsigned char *packet = psmouse->packet; + unsigned fingers; + int i; + + /* notify finger state change */ + fingers = packet[1] & 0x1f; + for (i = 0; i < ETP_MAX_FINGERS; i++) { + if ((fingers & (1 << i)) == 0) { + input_mt_slot(dev, i); + input_mt_report_slot_state(dev, MT_TOOL_FINGER, false); + } + } + + elantech_input_sync_v4(psmouse); +} + +static void process_packet_head_v4(struct psmouse *psmouse) +{ + struct input_dev *dev = psmouse->dev; + struct elantech_data *etd = psmouse->private; + unsigned char *packet = psmouse->packet; + int id = ((packet[3] & 0xe0) >> 5) - 1; + int pres, traces; + + if (id < 0) + return; + + etd->mt[id].x = ((packet[1] & 0x0f) << 8) | packet[2]; + etd->mt[id].y = etd->y_max - (((packet[4] & 0x0f) << 8) | packet[5]); + pres = (packet[1] & 0xf0) | ((packet[4] & 0xf0) >> 4); + traces = (packet[0] & 0xf0) >> 4; + + input_mt_slot(dev, id); + input_mt_report_slot_state(dev, MT_TOOL_FINGER, true); + + input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x); + input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y); + input_report_abs(dev, ABS_MT_PRESSURE, pres); + input_report_abs(dev, ABS_MT_TOUCH_MAJOR, traces * etd->width); + /* report this for backwards compatibility */ + input_report_abs(dev, ABS_TOOL_WIDTH, traces); + + elantech_input_sync_v4(psmouse); +} + +static void process_packet_motion_v4(struct psmouse *psmouse) +{ + struct input_dev *dev = psmouse->dev; + struct elantech_data *etd = psmouse->private; + unsigned char *packet = psmouse->packet; + int weight, delta_x1 = 0, delta_y1 = 0, delta_x2 = 0, delta_y2 = 0; + int id, sid; + + id = ((packet[0] & 0xe0) >> 5) - 1; + if (id < 0) + return; + + sid = ((packet[3] & 0xe0) >> 5) - 1; + weight = (packet[0] & 0x10) ? ETP_WEIGHT_VALUE : 1; + /* + * Motion packets give us the delta of x, y values of specific fingers, + * but in two's complement. Let the compiler do the conversion for us. + * Also _enlarge_ the numbers to int, in case of overflow. + */ + delta_x1 = (signed char)packet[1]; + delta_y1 = (signed char)packet[2]; + delta_x2 = (signed char)packet[4]; + delta_y2 = (signed char)packet[5]; + + etd->mt[id].x += delta_x1 * weight; + etd->mt[id].y -= delta_y1 * weight; + input_mt_slot(dev, id); + input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[id].x); + input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[id].y); + + if (sid >= 0) { + etd->mt[sid].x += delta_x2 * weight; + etd->mt[sid].y -= delta_y2 * weight; + input_mt_slot(dev, sid); + input_report_abs(dev, ABS_MT_POSITION_X, etd->mt[sid].x); + input_report_abs(dev, ABS_MT_POSITION_Y, etd->mt[sid].y); + } + + elantech_input_sync_v4(psmouse); +} + +static void elantech_report_absolute_v4(struct psmouse *psmouse, + int packet_type) +{ + switch (packet_type) { + case PACKET_V4_STATUS: + process_packet_status_v4(psmouse); + break; + + case PACKET_V4_HEAD: + process_packet_head_v4(psmouse); + break; + + case PACKET_V4_MOTION: + process_packet_motion_v4(psmouse); + break; + + case PACKET_UNKNOWN: + default: + /* impossible to get here */ + break; + } +} + +static int elantech_packet_check_v1(struct psmouse *psmouse) { struct elantech_data *etd = psmouse->private; unsigned char *packet = psmouse->packet; @@ -376,31 +609,142 @@ static int elantech_check_parity_v1(struct psmouse *psmouse) etd->parity[packet[3]] == p3; } +static int elantech_debounce_check_v2(struct psmouse *psmouse) +{ + /* + * When we encounter packet that matches this exactly, it means the + * hardware is in debounce status. Just ignore the whole packet. + */ + const u8 debounce_packet[] = { 0x84, 0xff, 0xff, 0x02, 0xff, 0xff }; + unsigned char *packet = psmouse->packet; + + return !memcmp(packet, debounce_packet, sizeof(debounce_packet)); +} + +static int elantech_packet_check_v2(struct psmouse *psmouse) +{ + struct elantech_data *etd = psmouse->private; + unsigned char *packet = psmouse->packet; + + /* + * V2 hardware has two flavors. Older ones that do not report pressure, + * and newer ones that reports pressure and width. With newer ones, all + * packets (1, 2, 3 finger touch) have the same constant bits. With + * older ones, 1/3 finger touch packets and 2 finger touch packets + * have different constant bits. + * With all three cases, if the constant bits are not exactly what I + * expected, I consider them invalid. + */ + if (etd->reports_pressure) + return (packet[0] & 0x0c) == 0x04 && + (packet[3] & 0x0f) == 0x02; + + if ((packet[0] & 0xc0) == 0x80) + return (packet[0] & 0x0c) == 0x0c && + (packet[3] & 0x0e) == 0x08; + + return (packet[0] & 0x3c) == 0x3c && + (packet[1] & 0xf0) == 0x00 && + (packet[3] & 0x3e) == 0x38 && + (packet[4] & 0xf0) == 0x00; +} + +/* + * We check the constant bits to determine what packet type we get, + * so packet checking is mandatory for v3 and later hardware. + */ +static int elantech_packet_check_v3(struct psmouse *psmouse) +{ + const u8 debounce_packet[] = { 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff }; + unsigned char *packet = psmouse->packet; + + /* + * check debounce first, it has the same signature in byte 0 + * and byte 3 as PACKET_V3_HEAD. + */ + if (!memcmp(packet, debounce_packet, sizeof(debounce_packet))) + return PACKET_DEBOUNCE; + + if ((packet[0] & 0x0c) == 0x04 && (packet[3] & 0xcf) == 0x02) + return PACKET_V3_HEAD; + + if ((packet[0] & 0x0c) == 0x0c && (packet[3] & 0xce) == 0x0c) + return PACKET_V3_TAIL; + + return PACKET_UNKNOWN; +} + +static int elantech_packet_check_v4(struct psmouse *psmouse) +{ + unsigned char *packet = psmouse->packet; + + if ((packet[0] & 0x0c) == 0x04 && + (packet[3] & 0x1f) == 0x11) + return PACKET_V4_HEAD; + + if ((packet[0] & 0x0c) == 0x04 && + (packet[3] & 0x1f) == 0x12) + return PACKET_V4_MOTION; + + if ((packet[0] & 0x0c) == 0x04 && + (packet[3] & 0x1f) == 0x10) + return PACKET_V4_STATUS; + + return PACKET_UNKNOWN; +} + /* * Process byte stream from mouse and handle complete packets */ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse) { struct elantech_data *etd = psmouse->private; + int packet_type; if (psmouse->pktcnt < psmouse->pktsize) return PSMOUSE_GOOD_DATA; if (etd->debug > 1) - elantech_packet_dump(psmouse->packet, psmouse->pktsize); + elantech_packet_dump(psmouse); switch (etd->hw_version) { case 1: - if (etd->paritycheck && !elantech_check_parity_v1(psmouse)) + if (etd->paritycheck && !elantech_packet_check_v1(psmouse)) return PSMOUSE_BAD_DATA; elantech_report_absolute_v1(psmouse); break; case 2: - /* We don't know how to check parity in protocol v2 */ + /* ignore debounce */ + if (elantech_debounce_check_v2(psmouse)) + return PSMOUSE_FULL_PACKET; + + if (etd->paritycheck && !elantech_packet_check_v2(psmouse)) + return PSMOUSE_BAD_DATA; + elantech_report_absolute_v2(psmouse); break; + + case 3: + packet_type = elantech_packet_check_v3(psmouse); + /* ignore debounce */ + if (packet_type == PACKET_DEBOUNCE) + return PSMOUSE_FULL_PACKET; + + if (packet_type == PACKET_UNKNOWN) + return PSMOUSE_BAD_DATA; + + elantech_report_absolute_v3(psmouse, packet_type); + break; + + case 4: + packet_type = elantech_packet_check_v4(psmouse); + if (packet_type == PACKET_UNKNOWN) + return PSMOUSE_BAD_DATA; + + elantech_report_absolute_v4(psmouse, packet_type); + break; } return PSMOUSE_FULL_PACKET; @@ -435,15 +779,29 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse) elantech_write_reg(psmouse, 0x11, etd->reg_11) || elantech_write_reg(psmouse, 0x21, etd->reg_21)) { rc = -1; - break; } + break; + + case 3: + etd->reg_10 = 0x0b; + if (elantech_write_reg(psmouse, 0x10, etd->reg_10)) + rc = -1; + + break; + + case 4: + etd->reg_07 = 0x01; + if (elantech_write_reg(psmouse, 0x07, etd->reg_07)) + rc = -1; + + goto skip_readback_reg_10; /* v4 has no reg 0x10 to read */ } if (rc == 0) { /* * Read back reg 0x10. For hardware version 1 we must make * sure the absolute mode bit is set. For hardware version 2 - * the touchpad is probably initalising and not ready until + * the touchpad is probably initializing and not ready until * we read back the value we just wrote. */ do { @@ -456,27 +814,115 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse) } while (tries > 0); if (rc) { - pr_err("failed to read back register 0x10.\n"); + psmouse_err(psmouse, + "failed to read back register 0x10.\n"); } else if (etd->hw_version == 1 && !(val & ETP_R10_ABSOLUTE_MODE)) { - pr_err("touchpad refuses to switch to absolute mode.\n"); + psmouse_err(psmouse, + "touchpad refuses to switch to absolute mode.\n"); rc = -1; } } + skip_readback_reg_10: if (rc) - pr_err("failed to initialise registers.\n"); + psmouse_err(psmouse, "failed to initialise registers.\n"); return rc; } +static int elantech_set_range(struct psmouse *psmouse, + unsigned int *x_min, unsigned int *y_min, + unsigned int *x_max, unsigned int *y_max, + unsigned int *width) +{ + struct elantech_data *etd = psmouse->private; + unsigned char param[3]; + unsigned char traces; + + switch (etd->hw_version) { + case 1: + *x_min = ETP_XMIN_V1; + *y_min = ETP_YMIN_V1; + *x_max = ETP_XMAX_V1; + *y_max = ETP_YMAX_V1; + break; + + case 2: + if (etd->fw_version == 0x020800 || + etd->fw_version == 0x020b00 || + etd->fw_version == 0x020030) { + *x_min = ETP_XMIN_V2; + *y_min = ETP_YMIN_V2; + *x_max = ETP_XMAX_V2; + *y_max = ETP_YMAX_V2; + } else { + int i; + int fixed_dpi; + + i = (etd->fw_version > 0x020800 && + etd->fw_version < 0x020900) ? 1 : 2; + + if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + return -1; + + fixed_dpi = param[1] & 0x10; + + if (((etd->fw_version >> 16) == 0x14) && fixed_dpi) { + if (synaptics_send_cmd(psmouse, ETP_SAMPLE_QUERY, param)) + return -1; + + *x_max = (etd->capabilities[1] - i) * param[1] / 2; + *y_max = (etd->capabilities[2] - i) * param[2] / 2; + } else if (etd->fw_version == 0x040216) { + *x_max = 819; + *y_max = 405; + } else if (etd->fw_version == 0x040219 || etd->fw_version == 0x040215) { + *x_max = 900; + *y_max = 500; + } else { + *x_max = (etd->capabilities[1] - i) * 64; + *y_max = (etd->capabilities[2] - i) * 64; + } + } + break; + + case 3: + if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + return -1; + + *x_max = (0x0f & param[0]) << 8 | param[1]; + *y_max = (0xf0 & param[0]) << 4 | param[2]; + break; + + case 4: + if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + return -1; + + *x_max = (0x0f & param[0]) << 8 | param[1]; + *y_max = (0xf0 & param[0]) << 4 | param[2]; + traces = etd->capabilities[1]; + if ((traces < 2) || (traces > *x_max)) + return -1; + + *width = *x_max / (traces - 1); + break; + } + + return 0; +} + /* * Set the appropriate event bits for the input subsystem */ -static void elantech_set_input_params(struct psmouse *psmouse) +static int elantech_set_input_params(struct psmouse *psmouse) { struct input_dev *dev = psmouse->dev; struct elantech_data *etd = psmouse->private; + unsigned int x_min = 0, y_min = 0, x_max = 0, y_max = 0, width = 0; + + if (elantech_set_range(psmouse, &x_min, &y_min, &x_max, &y_max, &width)) + return -1; __set_bit(EV_KEY, dev->evbit); __set_bit(EV_ABS, dev->evbit); @@ -494,30 +940,64 @@ static void elantech_set_input_params(struct psmouse *psmouse) case 1: /* Rocker button */ if (etd->fw_version < 0x020000 && - (etd->capabilities & ETP_CAP_HAS_ROCKER)) { + (etd->capabilities[0] & ETP_CAP_HAS_ROCKER)) { __set_bit(BTN_FORWARD, dev->keybit); __set_bit(BTN_BACK, dev->keybit); } - input_set_abs_params(dev, ABS_X, ETP_XMIN_V1, ETP_XMAX_V1, 0, 0); - input_set_abs_params(dev, ABS_Y, ETP_YMIN_V1, ETP_YMAX_V1, 0, 0); + input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); + input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); break; case 2: __set_bit(BTN_TOOL_QUADTAP, dev->keybit); - input_set_abs_params(dev, ABS_X, ETP_XMIN_V2, ETP_XMAX_V2, 0, 0); - input_set_abs_params(dev, ABS_Y, ETP_YMIN_V2, ETP_YMAX_V2, 0, 0); + __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); + /* fall through */ + case 3: + input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); + input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); if (etd->reports_pressure) { input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2, ETP_PMAX_V2, 0, 0); input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, ETP_WMAX_V2, 0, 0); } - __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); input_mt_init_slots(dev, 2); - input_set_abs_params(dev, ABS_MT_POSITION_X, ETP_XMIN_V2, ETP_XMAX_V2, 0, 0); - input_set_abs_params(dev, ABS_MT_POSITION_Y, ETP_YMIN_V2, ETP_YMAX_V2, 0, 0); + input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); + input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); + break; + + case 4: + __set_bit(BTN_TOOL_QUADTAP, dev->keybit); + /* For X to recognize me as touchpad. */ + input_set_abs_params(dev, ABS_X, x_min, x_max, 0, 0); + input_set_abs_params(dev, ABS_Y, y_min, y_max, 0, 0); + /* + * range of pressure and width is the same as v2, + * report ABS_PRESSURE, ABS_TOOL_WIDTH for compatibility. + */ + input_set_abs_params(dev, ABS_PRESSURE, ETP_PMIN_V2, + ETP_PMAX_V2, 0, 0); + input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, + ETP_WMAX_V2, 0, 0); + /* Multitouch capable pad, up to 5 fingers. */ + input_mt_init_slots(dev, ETP_MAX_FINGERS); + input_set_abs_params(dev, ABS_MT_POSITION_X, x_min, x_max, 0, 0); + input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min, y_max, 0, 0); + input_set_abs_params(dev, ABS_MT_PRESSURE, ETP_PMIN_V2, + ETP_PMAX_V2, 0, 0); + /* + * The firmware reports how many trace lines the finger spans, + * convert to surface unit as Protocol-B requires. + */ + input_set_abs_params(dev, ABS_MT_TOUCH_MAJOR, 0, + ETP_WMAX_V2 * width, 0, 0); break; } + + etd->y_max = y_max; + etd->width = width; + + return 0; } struct elantech_attr_data { @@ -587,6 +1067,7 @@ static ssize_t elantech_set_int_attr(struct psmouse *psmouse, elantech_show_int_attr, \ elantech_set_int_attr) +ELANTECH_INT_ATTR(reg_07, 0x07); ELANTECH_INT_ATTR(reg_10, 0x10); ELANTECH_INT_ATTR(reg_11, 0x11); ELANTECH_INT_ATTR(reg_20, 0x20); @@ -600,6 +1081,7 @@ ELANTECH_INT_ATTR(debug, 0); ELANTECH_INT_ATTR(paritycheck, 0); static struct attribute *elantech_attrs[] = { + &psmouse_attr_reg_07.dattr.attr, &psmouse_attr_reg_10.dattr.attr, &psmouse_attr_reg_11.dattr.attr, &psmouse_attr_reg_20.dattr.attr, @@ -651,7 +1133,7 @@ int elantech_detect(struct psmouse *psmouse, bool set_properties) ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSCALE11) || ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) { - pr_debug("sending Elantech magic knock failed.\n"); + psmouse_dbg(psmouse, "sending Elantech magic knock failed.\n"); return -1; } @@ -659,9 +1141,11 @@ int elantech_detect(struct psmouse *psmouse, bool set_properties) * Report this in case there are Elantech models that use a different * set of magic numbers */ - if (param[0] != 0x3c || param[1] != 0x03 || param[2] != 0xc8) { - pr_debug("unexpected magic knock result 0x%02x, 0x%02x, 0x%02x.\n", - param[0], param[1], param[2]); + if (param[0] != 0x3c || param[1] != 0x03 || + (param[2] != 0xc8 && param[2] != 0x00)) { + psmouse_dbg(psmouse, + "unexpected magic knock result 0x%02x, 0x%02x, 0x%02x.\n", + param[0], param[1], param[2]); return -1; } @@ -671,20 +1155,18 @@ int elantech_detect(struct psmouse *psmouse, bool set_properties) * to Elantech magic knock and there might be more. */ if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) { - pr_debug("failed to query firmware version.\n"); + psmouse_dbg(psmouse, "failed to query firmware version.\n"); return -1; } - pr_debug("Elantech version query result 0x%02x, 0x%02x, 0x%02x.\n", - param[0], param[1], param[2]); + psmouse_dbg(psmouse, + "Elantech version query result 0x%02x, 0x%02x, 0x%02x.\n", + param[0], param[1], param[2]); if (!elantech_is_signature_valid(param)) { - if (!force_elantech) { - pr_debug("Probably not a real Elantech touchpad. Aborting.\n"); - return -1; - } - - pr_debug("Probably not a real Elantech touchpad. Enabling anyway due to force_elantech.\n"); + psmouse_dbg(psmouse, + "Probably not a real Elantech touchpad. Aborting.\n"); + return -1; } if (set_properties) { @@ -715,7 +1197,8 @@ static int elantech_reconnect(struct psmouse *psmouse) return -1; if (elantech_set_absolute_mode(psmouse)) { - pr_err("failed to put touchpad back into absolute mode.\n"); + psmouse_err(psmouse, + "failed to put touchpad back into absolute mode.\n"); return -1; } @@ -723,6 +1206,48 @@ static int elantech_reconnect(struct psmouse *psmouse) } /* + * determine hardware version and set some properties according to it. + */ +static int elantech_set_properties(struct elantech_data *etd) +{ + int ver = (etd->fw_version & 0x0f0000) >> 16; + + if (etd->fw_version < 0x020030 || etd->fw_version == 0x020600) + etd->hw_version = 1; + else if (etd->fw_version < 0x150600) + etd->hw_version = 2; + else if (ver == 5) + etd->hw_version = 3; + else if (ver == 6) + etd->hw_version = 4; + else + return -1; + + /* + * Turn on packet checking by default. + */ + etd->paritycheck = 1; + + /* + * This firmware suffers from misreporting coordinates when + * a touch action starts causing the mouse cursor or scrolled page + * to jump. Enable a workaround. + */ + etd->jumpy_cursor = + (etd->fw_version == 0x020022 || etd->fw_version == 0x020600); + + if (etd->hw_version > 1) { + /* For now show extra debug information */ + etd->debug = 1; + + if (etd->fw_version >= 0x020800) + etd->reports_pressure = true; + } + + return 0; +} + +/* * Initialize the touchpad and create sysfs entries */ int elantech_init(struct psmouse *psmouse) @@ -743,70 +1268,53 @@ int elantech_init(struct psmouse *psmouse) * Do the version query again so we can store the result */ if (synaptics_send_cmd(psmouse, ETP_FW_VERSION_QUERY, param)) { - pr_err("failed to query firmware version.\n"); + psmouse_err(psmouse, "failed to query firmware version.\n"); goto init_fail; } - etd->fw_version = (param[0] << 16) | (param[1] << 8) | param[2]; - /* - * Assume every version greater than this is new EeePC style - * hardware with 6 byte packets - */ - if (etd->fw_version >= 0x020030) { - etd->hw_version = 2; - /* For now show extra debug information */ - etd->debug = 1; - /* Don't know how to do parity checking for version 2 */ - etd->paritycheck = 0; - - if (etd->fw_version >= 0x020800) - etd->reports_pressure = true; - - } else { - etd->hw_version = 1; - etd->paritycheck = 1; - } - - pr_info("assuming hardware version %d, firmware version %d.%d.%d\n", - etd->hw_version, param[0], param[1], param[2]); - - if (synaptics_send_cmd(psmouse, ETP_CAPABILITIES_QUERY, param)) { - pr_err("failed to query capabilities.\n"); + if (elantech_set_properties(etd)) { + psmouse_err(psmouse, "unknown hardware version, aborting...\n"); goto init_fail; } - pr_info("Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n", - param[0], param[1], param[2]); - etd->capabilities = param[0]; + psmouse_info(psmouse, + "assuming hardware version %d (with firmware version 0x%02x%02x%02x)\n", + etd->hw_version, param[0], param[1], param[2]); - /* - * This firmware suffers from misreporting coordinates when - * a touch action starts causing the mouse cursor or scrolled page - * to jump. Enable a workaround. - */ - if (etd->fw_version == 0x020022 || etd->fw_version == 0x020600) { - pr_info("firmware version 2.0.34/2.6.0 detected, enabling jumpy cursor workaround\n"); - etd->jumpy_cursor = true; + if (synaptics_send_cmd(psmouse, ETP_CAPABILITIES_QUERY, + etd->capabilities)) { + psmouse_err(psmouse, "failed to query capabilities.\n"); + goto init_fail; } + psmouse_info(psmouse, + "Synaptics capabilities query result 0x%02x, 0x%02x, 0x%02x.\n", + etd->capabilities[0], etd->capabilities[1], + etd->capabilities[2]); if (elantech_set_absolute_mode(psmouse)) { - pr_err("failed to put touchpad into absolute mode.\n"); + psmouse_err(psmouse, + "failed to put touchpad into absolute mode.\n"); goto init_fail; } - elantech_set_input_params(psmouse); + if (elantech_set_input_params(psmouse)) { + psmouse_err(psmouse, "failed to query touchpad range.\n"); + goto init_fail; + } error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj, &elantech_attr_group); if (error) { - pr_err("failed to create sysfs attributes, error: %d.\n", error); + psmouse_err(psmouse, + "failed to create sysfs attributes, error: %d.\n", + error); goto init_fail; } psmouse->protocol_handler = elantech_process_byte; psmouse->disconnect = elantech_disconnect; psmouse->reconnect = elantech_reconnect; - psmouse->pktsize = etd->hw_version == 2 ? 6 : 4; + psmouse->pktsize = etd->hw_version > 1 ? 6 : 4; return 0; |