diff options
Diffstat (limited to 'drivers/input/mouse/elantech.c')
| -rw-r--r-- | drivers/input/mouse/elantech.c | 241 |
1 files changed, 209 insertions, 32 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index e2a9867c19d..ee2a04d90d2 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -11,6 +11,7 @@ */ #include <linux/delay.h> +#include <linux/dmi.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/input.h> @@ -43,6 +44,24 @@ static int synaptics_send_cmd(struct psmouse *psmouse, unsigned char c, } /* + * V3 and later support this fast command + */ +static int elantech_send_cmd(struct psmouse *psmouse, unsigned char c, + unsigned char *param) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + + if (ps2_command(ps2dev, NULL, ETP_PS2_CUSTOM_COMMAND) || + ps2_command(ps2dev, NULL, c) || + ps2_command(ps2dev, param, PSMOUSE_CMD_GETINFO)) { + psmouse_err(psmouse, "%s query 0x%02x failed.\n", __func__, c); + return -1; + } + + return 0; +} + +/* * A retrying version of ps2_command */ static int elantech_ps2_command(struct psmouse *psmouse, @@ -454,8 +473,15 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse, 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); + + /* For clickpads map both buttons to BTN_LEFT */ + if (etd->fw_version & 0x001000) { + input_report_key(dev, BTN_LEFT, packet[0] & 0x03); + } else { + 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); @@ -465,10 +491,17 @@ static void elantech_report_absolute_v3(struct psmouse *psmouse, static void elantech_input_sync_v4(struct psmouse *psmouse) { struct input_dev *dev = psmouse->dev; + struct elantech_data *etd = psmouse->private; unsigned char *packet = psmouse->packet; - input_report_key(dev, BTN_LEFT, packet[0] & 0x01); - input_report_key(dev, BTN_RIGHT, packet[0] & 0x02); + /* For clickpads map both buttons to BTN_LEFT */ + if (etd->fw_version & 0x001000) { + input_report_key(dev, BTN_LEFT, packet[0] & 0x03); + } else { + 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); } @@ -655,6 +688,7 @@ static int elantech_packet_check_v2(struct psmouse *psmouse) */ static int elantech_packet_check_v3(struct psmouse *psmouse) { + struct elantech_data *etd = psmouse->private; const u8 debounce_packet[] = { 0xc4, 0xff, 0xff, 0x02, 0xff, 0xff }; unsigned char *packet = psmouse->packet; @@ -665,31 +699,60 @@ static int elantech_packet_check_v3(struct psmouse *psmouse) 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 the hardware flag 'crc_enabled' is set the packets have + * different signatures. + */ + if (etd->crc_enabled) { + if ((packet[3] & 0x09) == 0x08) + return PACKET_V3_HEAD; - if ((packet[0] & 0x0c) == 0x0c && (packet[3] & 0xce) == 0x0c) - return PACKET_V3_TAIL; + if ((packet[3] & 0x09) == 0x09) + return PACKET_V3_TAIL; + } else { + 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) { + struct elantech_data *etd = psmouse->private; unsigned char *packet = psmouse->packet; + unsigned char packet_type = packet[3] & 0x03; + bool sanity_check; - if ((packet[0] & 0x0c) == 0x04 && - (packet[3] & 0x1f) == 0x11) - return PACKET_V4_HEAD; + /* + * Sanity check based on the constant bits of a packet. + * The constant bits change depending on the value of + * the hardware flag 'crc_enabled' but are the same for + * every packet, regardless of the type. + */ + if (etd->crc_enabled) + sanity_check = ((packet[3] & 0x08) == 0x00); + else + sanity_check = ((packet[0] & 0x0c) == 0x04 && + (packet[3] & 0x1c) == 0x10); - if ((packet[0] & 0x0c) == 0x04 && - (packet[3] & 0x1f) == 0x12) - return PACKET_V4_MOTION; + if (!sanity_check) + return PACKET_UNKNOWN; - if ((packet[0] & 0x0c) == 0x04 && - (packet[3] & 0x1f) == 0x10) + switch (packet_type) { + case 0: return PACKET_V4_STATUS; + case 1: + return PACKET_V4_HEAD; + + case 2: + return PACKET_V4_MOTION; + } + return PACKET_UNKNOWN; } @@ -783,7 +846,11 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse) break; case 3: - etd->reg_10 = 0x0b; + if (etd->set_hw_resolution) + etd->reg_10 = 0x0b; + else + etd->reg_10 = 0x01; + if (elantech_write_reg(psmouse, 0x10, etd->reg_10)) rc = -1; @@ -863,13 +930,13 @@ static int elantech_set_range(struct psmouse *psmouse, i = (etd->fw_version > 0x020800 && etd->fw_version < 0x020900) ? 1 : 2; - if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + if (etd->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)) + if (etd->send_cmd(psmouse, ETP_SAMPLE_QUERY, param)) return -1; *x_max = (etd->capabilities[1] - i) * param[1] / 2; @@ -888,7 +955,7 @@ static int elantech_set_range(struct psmouse *psmouse, break; case 3: - if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) return -1; *x_max = (0x0f & param[0]) << 8 | param[1]; @@ -896,7 +963,7 @@ static int elantech_set_range(struct psmouse *psmouse, break; case 4: - if (synaptics_send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + if (etd->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) return -1; *x_max = (0x0f & param[0]) << 8 | param[1]; @@ -913,6 +980,68 @@ static int elantech_set_range(struct psmouse *psmouse, } /* + * (value from firmware) * 10 + 790 = dpi + * we also have to convert dpi to dots/mm (*10/254 to avoid floating point) + */ +static unsigned int elantech_convert_res(unsigned int val) +{ + return (val * 10 + 790) * 10 / 254; +} + +static int elantech_get_resolution_v4(struct psmouse *psmouse, + unsigned int *x_res, + unsigned int *y_res) +{ + unsigned char param[3]; + + if (elantech_send_cmd(psmouse, ETP_RESOLUTION_QUERY, param)) + return -1; + + *x_res = elantech_convert_res(param[1] & 0x0f); + *y_res = elantech_convert_res((param[1] & 0xf0) >> 4); + + return 0; +} + +/* + * Advertise INPUT_PROP_BUTTONPAD for clickpads. The testing of bit 12 in + * fw_version for this is based on the following fw_version & caps table: + * + * Laptop-model: fw_version: caps: buttons: + * Acer S3 0x461f00 10, 13, 0e clickpad + * Acer S7-392 0x581f01 50, 17, 0d clickpad + * Acer V5-131 0x461f02 01, 16, 0c clickpad + * Acer V5-551 0x461f00 ? clickpad + * Asus K53SV 0x450f01 78, 15, 0c 2 hw buttons + * Asus G46VW 0x460f02 00, 18, 0c 2 hw buttons + * Asus G750JX 0x360f00 00, 16, 0c 2 hw buttons + * Asus UX31 0x361f00 20, 15, 0e clickpad + * Asus UX32VD 0x361f02 00, 15, 0e clickpad + * Avatar AVIU-145A2 0x361f00 ? clickpad + * Gigabyte U2442 0x450f01 58, 17, 0c 2 hw buttons + * Lenovo L430 0x350f02 b9, 15, 0c 2 hw buttons (*) + * Samsung NF210 0x150b00 78, 14, 0a 2 hw buttons + * Samsung NP770Z5E 0x575f01 10, 15, 0f clickpad + * Samsung NP700Z5B 0x361f06 21, 15, 0f clickpad + * Samsung NP900X3E-A02 0x575f03 ? clickpad + * Samsung NP-QX410 0x851b00 19, 14, 0c clickpad + * Samsung RC512 0x450f00 08, 15, 0c 2 hw buttons + * Samsung RF710 0x450f00 ? 2 hw buttons + * System76 Pangolin 0x250f01 ? 2 hw buttons + * (*) + 3 trackpoint buttons + */ +static void elantech_set_buttonpad_prop(struct psmouse *psmouse) +{ + struct input_dev *dev = psmouse->dev; + struct elantech_data *etd = psmouse->private; + + if (etd->fw_version & 0x001000) { + __set_bit(INPUT_PROP_BUTTONPAD, dev->propbit); + __clear_bit(BTN_RIGHT, dev->keybit); + } +} + +/* * Set the appropriate event bits for the input subsystem */ static int elantech_set_input_params(struct psmouse *psmouse) @@ -920,10 +1049,12 @@ 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; + unsigned int x_res = 0, y_res = 0; if (elantech_set_range(psmouse, &x_min, &y_min, &x_max, &y_max, &width)) return -1; + __set_bit(INPUT_PROP_POINTER, dev->propbit); __set_bit(EV_KEY, dev->evbit); __set_bit(EV_ABS, dev->evbit); __clear_bit(EV_REL, dev->evbit); @@ -953,6 +1084,8 @@ static int elantech_set_input_params(struct psmouse *psmouse) __set_bit(INPUT_PROP_SEMI_MT, dev->propbit); /* fall through */ case 3: + if (etd->hw_version == 3) + elantech_set_buttonpad_prop(psmouse); 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) { @@ -961,16 +1094,26 @@ static int elantech_set_input_params(struct psmouse *psmouse) input_set_abs_params(dev, ABS_TOOL_WIDTH, ETP_WMIN_V2, ETP_WMAX_V2, 0, 0); } - input_mt_init_slots(dev, 2); + input_mt_init_slots(dev, 2, 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: + if (elantech_get_resolution_v4(psmouse, &x_res, &y_res)) { + /* + * if query failed, print a warning and leave the values + * zero to resemble synaptics.c behavior. + */ + psmouse_warn(psmouse, "couldn't query resolution data.\n"); + } + elantech_set_buttonpad_prop(psmouse); __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); + input_abs_set_res(dev, ABS_X, x_res); + input_abs_set_res(dev, ABS_Y, y_res); /* * range of pressure and width is the same as v2, * report ABS_PRESSURE, ABS_TOOL_WIDTH for compatibility. @@ -980,9 +1123,11 @@ static int elantech_set_input_params(struct psmouse *psmouse) 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_mt_init_slots(dev, ETP_MAX_FINGERS, 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); + input_abs_set_res(dev, ABS_MT_POSITION_X, x_res); + input_abs_set_res(dev, ABS_MT_POSITION_Y, y_res); input_set_abs_params(dev, ABS_MT_PRESSURE, ETP_PMIN_V2, ETP_PMAX_V2, 0, 0); /* @@ -1031,16 +1176,13 @@ static ssize_t elantech_set_int_attr(struct psmouse *psmouse, struct elantech_data *etd = psmouse->private; struct elantech_attr_data *attr = data; unsigned char *reg = (unsigned char *) etd + attr->field_offset; - unsigned long value; + unsigned char value; int err; - err = strict_strtoul(buf, 16, &value); + err = kstrtou8(buf, 16, &value); if (err) return err; - if (value > 0xff) - return -EINVAL; - /* Do we need to preserve some bits for version 2 hardware too? */ if (etd->hw_version == 1) { if (attr->reg == 0x10) @@ -1193,6 +1335,8 @@ static void elantech_disconnect(struct psmouse *psmouse) */ static int elantech_reconnect(struct psmouse *psmouse) { + psmouse_reset(psmouse); + if (elantech_detect(psmouse, 0)) return -1; @@ -1206,6 +1350,23 @@ static int elantech_reconnect(struct psmouse *psmouse) } /* + * Some hw_version 3 models go into error state when we try to set + * bit 3 and/or bit 1 of r10. + */ +static const struct dmi_system_id no_hw_res_dmi_table[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Gigabyte U2442 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "U2442"), + }, + }, +#endif + { } +}; + +/* * determine hardware version and set some properties according to it. */ static int elantech_set_properties(struct elantech_data *etd) @@ -1226,6 +1387,9 @@ static int elantech_set_properties(struct elantech_data *etd) etd->hw_version = 3; break; case 6: + case 7: + case 8: + case 9: etd->hw_version = 4; break; default: @@ -1233,9 +1397,11 @@ static int elantech_set_properties(struct elantech_data *etd) } } - /* - * Turn on packet checking by default. - */ + /* decide which send_cmd we're gonna use early */ + etd->send_cmd = etd->hw_version >= 3 ? elantech_send_cmd : + synaptics_send_cmd; + + /* Turn on packet checking by default */ etd->paritycheck = 1; /* @@ -1254,6 +1420,15 @@ static int elantech_set_properties(struct elantech_data *etd) etd->reports_pressure = true; } + /* + * The signatures of v3 and v4 packets change depending on the + * value of this hardware flag. + */ + etd->crc_enabled = ((etd->fw_version & 0x4000) == 0x4000); + + /* Enable real hardware resolution on hw_version 3 ? */ + etd->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table); + return 0; } @@ -1270,6 +1445,8 @@ int elantech_init(struct psmouse *psmouse) if (!etd) return -ENOMEM; + psmouse_reset(psmouse); + etd->parity[0] = 1; for (i = 1; i < 256; i++) etd->parity[i] = etd->parity[i & (i - 1)] ^ 1; @@ -1291,7 +1468,7 @@ int elantech_init(struct psmouse *psmouse) "assuming hardware version %d (with firmware version 0x%02x%02x%02x)\n", etd->hw_version, param[0], param[1], param[2]); - if (synaptics_send_cmd(psmouse, ETP_CAPABILITIES_QUERY, + if (etd->send_cmd(psmouse, ETP_CAPABILITIES_QUERY, etd->capabilities)) { psmouse_err(psmouse, "failed to query capabilities.\n"); goto init_fail; |