On Thu, Aug 18, 2011 at 11:04 AM, Wanlong Gao <gaowanlong@xxxxxxxxxxxxxx> wrote:
> On 08/18/2011 10:57 AM, Daniel Kurtz wrote:
>>
>> On Thu, Aug 18, 2011 at 9:57 AM, JJ Ding<jj_ding@xxxxxxxxxx> wrote:
>>>
>>> v3 hardware's packet format is almost identical to v2 (one/three finger
>>> touch),
>>> except when sensing two finger touch, the hardware sends 12 bytes of
>>> data.
>>>
>>> Signed-off-by: JJ Ding<jj_ding@xxxxxxxxxx>
>>> ---
>>> Documentation/input/elantech.txt | 104 ++++++++++++++++--
>>> drivers/input/mouse/elantech.c | 218
>>> ++++++++++++++++++++++++++++++++++---
>>> drivers/input/mouse/elantech.h | 11 ++
>>> 3 files changed, 303 insertions(+), 30 deletions(-)
>>>
>>> diff --git a/Documentation/input/elantech.txt
>>> b/Documentation/input/elantech.txt
>>> index bce9941..ce578bd 100644
>>> --- a/Documentation/input/elantech.txt
>>> +++ b/Documentation/input/elantech.txt
>>> @@ -16,15 +16,22 @@ Contents
>>>
>>> 1. Introduction
>>> 2. Extra knobs
>>> - 3. Hardware version 1
>>> - 3.1 Registers
>>> - 3.2 Native relative mode 4 byte packet format
>>> - 3.3 Native absolute mode 4 byte packet format
>>> - 4. Hardware version 2
>>> + 3. Differentiating hardware versions
>>> + 4. Hardware version 1
>>> 4.1 Registers
>>> - 4.2 Native absolute mode 6 byte packet format
>>> - 4.2.1 One finger touch
>>> - 4.2.2 Two finger touch
>>> + 4.2 Native relative mode 4 byte packet format
>>> + 4.3 Native absolute mode 4 byte packet format
>>> + 5. Hardware version 2
>>> + 5.1 Registers
>>> + 5.2 Native absolute mode 6 byte packet format
>>> + 5.2.1 Parity checking and packet re-synchronization
>>> + 5.2.2 One/Three finger touch
>>> + 5.2.3 Two finger touch
>>> + 6. Hardware version 3
>>> + 6.1 Registers
>>> + 6.2 Native absolute mode 6 byte packet format
>>> + 6.2.1 One/Three finger touch
>>> + 6.2.2 Two finger touch
>>>
>>>
>>>
>>> @@ -375,7 +382,7 @@ For all the other ones, there are just a few constant
>>> bits:
>>>
>>> In case an error is detected, all the packets are shifted by one (and
>>> packet[0] is discarded).
>>>
>>> -5.2.1 One/Three finger touch
>>> +5.2.2 One/Three finger touch
>>> ~~~~~~~~~~~~~~~~
>>>
>>> byte 0:
>>> @@ -384,7 +391,7 @@ byte 0:
>>> n1 n0 w3 w2 . . R L
>>>
>>> L, R = 1 when Left, Right mouse button pressed
>>> - n1..n0 = numbers of fingers on touchpad
>>> + n1..n0 = number of fingers on touchpad
>>>
>>> byte 1:
>>>
>>> @@ -432,7 +439,7 @@ byte 5:
>>> y11..y0 = absolute y value (vertical)
>>>
>>>
>>> -4.2.2 Two finger touch
>>> +5.2.3 Two finger touch
>>> ~~~~~~~~~~~~~~~~
>>>
>>> Note that the two pairs of coordinates are not exactly the coordinates
>>> of the
>>> @@ -446,7 +453,7 @@ byte 0:
>>> n1 n0 ay8 ax8 . . R L
>>>
>>> L, R = 1 when Left, Right mouse button pressed
>>> - n1..n0 = numbers of fingers on touchpad
>>> + n1..n0 = number of fingers on touchpad
>>>
>>> byte 1:
>>>
>>> @@ -480,3 +487,76 @@ byte 5:
>>> by7 by8 by5 by4 by3 by2 by1 by0
>>>
>>> by8..by0 = upper-right finger absolute y value
>>> +
>>>
>>> +/////////////////////////////////////////////////////////////////////////////
>>> +
>>> +6. Hardware version 3
>>> + ==================
>>> +
>>> +6.1 Registers
>>> + ~~~~~~~~~
>>> +* reg_10
>>> +
>>> + bit 7 6 5 4 3 2 1 0
>>> + 0 0 0 0 0 0 0 A
>>> +
>>> + A: 1 = enable absolute tracking
>>> +
>>> +6.2 Native absolute mode 6 byte packet format
>>> + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> +1 and 3 finger touch shares the same 6-byte packet format, except that
>>> +3 finger touch only reports the position of the center of all three
>>> fingers.
>>> +
>>> +Firmware would send 12 bytes of data for 2 finger touch.
>>> +
>>> +6.2.1 One/Three finger touch
>>> + ~~~~~~~~~~~~~~~~~~~~~~
>>> +
>>> +byte 0:
>>> +
>>> + bit 7 6 5 4 3 2 1 0
>>> + n1 n0 w3 w2 0 1 R L
>>> +
>>> + L, R = 1 when Left, Right mouse button pressed
>>> + n1..n0 = number of fingers on touchpad
>>> +
>>> +byte 1:
>>> +
>>> + bit 7 6 5 4 3 2 1 0
>>> + p7 p6 p5 p4 x11 x10 x9 x8
>>> +
>>> +byte 2:
>>> +
>>> + bit 7 6 5 4 3 2 1 0
>>> + x7 x6 x5 x4 x3 x2 x1 x0
>>> +
>>> + x11..x0 = absolute x value (horizontal)
>>> +
>>> +byte 3:
>>> +
>>> + bit 7 6 5 4 3 2 1 0
>>> + 0 0 w1 w0 0 0 1 0
>>> +
>>> + w3..w0 = width of the finger touch
>>> +
>>> +byte 4:
>>> +
>>> + bit 7 6 5 4 3 2 1 0
>>> + p3 p1 p2 p0 y11 y10 y9 y8
>>> +
>>> + p7..p0 = pressure
>>> +
>>> +byte 5:
>>> +
>>> + bit 7 6 5 4 3 2 1 0
>>> + y7 y6 y5 y4 y3 y2 y1 y0
>>> +
>>> + y11..y0 = absolute y value (vertical)
>>> +
>>> +6.2.2 Two finger touch
>>> + ~~~~~~~~~~~~~~~~
>>> +
>>> +The packet format is exactly the same for two finger touch, except the
>>> hardware
>>> +sends two 6 byte packets. The first packet contains data for the first
>>> finger,
>>> +the second packet has data for the second finger. So for two finger
>>> touch a
>>> +total of 12 bytes are sent.
>>> diff --git a/drivers/input/mouse/elantech.c
>>> b/drivers/input/mouse/elantech.c
>>> index ddd40eb..e13a719 100644
>>> --- a/drivers/input/mouse/elantech.c
>>> +++ b/drivers/input/mouse/elantech.c
>>> @@ -108,6 +108,16 @@ static int elantech_read_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, param,
>>> PSMOUSE_CMD_GETINFO)) {
>>> + rc = -1;
>>> + }
>>> + break;
>>> }
>>>
>>> if (rc)
>>> @@ -154,6 +164,18 @@ 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;
>>> }
>>>
>>> if (rc)
>>> @@ -352,6 +374,94 @@ static void elantech_report_absolute_v2(struct
>>> psmouse *psmouse)
>>> input_sync(dev);
>>> }
>>>
>>> +/*
>>> + * firmware tells us there's noise.
>>> + */
>>> +static inline int debounce(unsigned int x, unsigned int y)
>>> +{
>>> + return (x == 0xfff)&& (y == 0xfff);
>>
>> Perhaps you could document this behavior in the elantech.txt.
>>
>>> +}
>>> +
>>> +/*
>>> + * 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]);
>>> +
>>> + if (fingers == 3&& debounce(x1, y1))
>>> + return;
>>> +
>>> + 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->prev_x = ((packet[1]& 0x0f)<< 8) |
>>> packet[2];
>>> + /*
>>> + * byte 4: . . . . ay11 ay10 ay9 ay8
>>> + * byte 5: ay7 ay6 ay5 ay4 ay3 ay2 ay1 ay0
>>> + */
>>> + etd->prev_y = etd->y_max -
>>> + (((packet[4]& 0x0f)<< 8) | packet[5]);
>>> + /*
>>> + * wait for next packet
>>> + */
>>> + return;
>>> + }
>>> +
>>> + /* packet_type == PACKET_V3_TAIL */
>>> + x1 = etd->prev_x;
>>> + y1 = etd->prev_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);
>>> + 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 int elantech_check_parity_v1(struct psmouse *psmouse)
>>> {
>>> struct elantech_data *etd = psmouse->private;
>>> @@ -396,11 +506,31 @@ static int packet_simple_check_v2(struct psmouse
>>> *psmouse)
>>> }
>>>
>>> /*
>>> + * We check the constant bits to determine what packet type we get,
>>> + * so packet checking is mandatory for v3 hardware.
>>> + */
>>> +static int determine_packet_v3(struct psmouse *psmouse)
>>> +{
>>> + unsigned char *packet = psmouse->packet;
>>> +
>>> + 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;
>>> +}
>>> +
>>> +/*
>>> * 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;
>>> @@ -422,6 +552,14 @@ static psmouse_ret_t elantech_process_byte(struct
>>> psmouse *psmouse)
>>>
>>> elantech_report_absolute_v2(psmouse);
>>> break;
>>> +
>>> + case 3:
>>> + packet_type = determine_packet_v3(psmouse);
>>> + if (packet_type == PACKET_UNKNOWN)
>>> + goto bad_packet;
>>> +
>>> + elantech_report_absolute_v3(psmouse, packet_type);
>>> + break;
>>> }
>>>
>>> return PSMOUSE_FULL_PACKET;
>>> @@ -459,10 +597,17 @@ static int elantech_set_absolute_mode(struct
>>> psmouse *psmouse)
>>> etd->reg_21 = 0x60; /* 0x00 */
>>> if (elantech_write_reg(psmouse, 0x10, etd->reg_10) ||
>>> elantech_write_reg(psmouse, 0x11, etd->reg_11) ||
>>> - elantech_write_reg(psmouse, 0x21, etd->reg_21)) {
>>> + 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;
>>> }
>>>
>>> if (rc == 0) {
>>> @@ -496,11 +641,12 @@ static int elantech_set_absolute_mode(struct
>>> psmouse *psmouse)
>>> return rc;
>>> }
>>>
>>> -static void set_range(struct psmouse *psmouse, unsigned int *x_min,
>>> +static int set_range(struct psmouse *psmouse, unsigned int *x_min,
>>> unsigned int *y_min, unsigned int *x_max,
>>> unsigned int *y_max, unsigned int *y_2ft_max)
>>> {
>>> struct elantech_data *etd = psmouse->private;
>>> + unsigned char param[3];
>>> int i;
>>>
>>> switch (etd->hw_version) {
>>> @@ -529,19 +675,30 @@ static void set_range(struct psmouse *psmouse,
>>> unsigned int *x_min,
>>> *y_max = (etd->capabilities[2] - i) * 64;
>>> *y_2ft_max = (*y_max - i) * 64 / 4;
>>> 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;
>>> }
>>> +
>>> + 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, y_2ft_max
>>> = 0;
>>>
>>> - set_range(psmouse,&x_min,&y_min,&x_max,&y_max,&y_2ft_max);
>>> + if (set_range(psmouse,&x_min,&y_min,&x_max,&y_max,&y_2ft_max))
>>> + return -1;
>>>
>>> __set_bit(EV_KEY, dev->evbit);
>>> __set_bit(EV_ABS, dev->evbit);
>>> @@ -582,10 +739,26 @@ static void elantech_set_input_params(struct
>>> psmouse *psmouse)
>>> 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 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);
>>> + /* range of pressure and width is the same as v2 */
>>> + 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, x_min,
>>> x_max, 0, 0);
>>> + input_set_abs_params(dev, ABS_MT_POSITION_Y, y_min,
>>> y_max, 0, 0);
>>> + break;
>>> }
>>>
>>> etd->y_max = y_max;
>>> etd->y_2ft_max = y_2ft_max;
>>> +
>>> + return 0;
>>> }
>>>
>>> struct elantech_attr_data {
>>> @@ -727,7 +900,8 @@ 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) {
>>> + if (param[0] != 0x3c || param[1] != 0x03 ||
>>> + (param[2] != 0xc8&& param[2] != 0x00)) {
>>> pr_debug("unexpected magic knock result 0x%02x, 0x%02x,
>>> 0x%02x.\n",
>>> param[0], param[1], param[2]);
>>> return -1;
>>> @@ -793,16 +967,16 @@ static int elantech_reconnect(struct psmouse
>>> *psmouse)
>>> /*
>>> * determine hardware version and set some properties according to it.
>>> */
>>> -static void elantech_set_properties(struct elantech_data *etd)
>>> +static int elantech_set_properties(struct elantech_data *etd)
>>> {
>>> - /*
>>> - * Assume every version greater than 0x020030 is new EeePC style
>>> - * hardware with 6 byte packets, except 0x020600
>>> - */
>>> if (etd->fw_version< 0x020030 || etd->fw_version == 0x020600)
>>> etd->hw_version = 1;
>>> - else
>>> + else if (etd->fw_version< 0x150600)
>>> etd->hw_version = 2;
>>> + else if ((etd->fw_version& 0x0f0000)>> 16 == 5)
>>> + etd->hw_version = 3;
>>> + else
>>> + return -1;
>>>
>>> /*
>>> * Turn on packet checking by default.
>>> @@ -817,13 +991,15 @@ static void elantech_set_properties(struct
>>> elantech_data *etd)
>>> etd->jumpy_cursor =
>>> (etd->fw_version == 0x020022 || etd->fw_version ==
>>> 0x020600);
>>>
>>> - if (etd->hw_version == 2) {
>>> + 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;
>>> }
>>>
>>> /*
>>> @@ -850,9 +1026,12 @@ int elantech_init(struct psmouse *psmouse)
>>> pr_err("failed to query firmware version.\n");
>>> goto init_fail;
>>> }
>>> -
>>> etd->fw_version = (param[0]<< 16) | (param[1]<< 8) | param[2];
>>> - elantech_set_properties(etd);
>>> +
>>> + if (elantech_set_properties(etd)) {
>>> + pr_err("unknown hardware version, aborting...\n");
>>> + goto init_fail;
>>> + }
>>> pr_info("assuming hardware version %d "
>>> "(with firmware version 0x%02x%02x%02x)\n",
>>> etd->hw_version, param[0], param[1], param[2]);
>>> @@ -871,7 +1050,10 @@ int elantech_init(struct psmouse *psmouse)
>>> goto init_fail;
>>> }
>>>
>>> - elantech_set_input_params(psmouse);
>>> + if (elantech_set_input_params(psmouse)) {
>>> + pr_err("failed to query touchpad range.\n");
>>> + goto init_fail;
>>> + }
>>>
>>> error = sysfs_create_group(&psmouse->ps2dev.serio->dev.kobj,
>>> &elantech_attr_group);
>>> @@ -883,7 +1065,7 @@ int elantech_init(struct psmouse *psmouse)
>>> 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;
>>>
>>> diff --git a/drivers/input/mouse/elantech.h
>>> b/drivers/input/mouse/elantech.h
>>> index 4b7447e..4f01fc6 100644
>>> --- a/drivers/input/mouse/elantech.h
>>> +++ b/drivers/input/mouse/elantech.h
>>> @@ -16,6 +16,7 @@
>>> /*
>>> * Command values for Synaptics style queries
>>> */
>>> +#define ETP_FW_ID_QUERY 0x00
>>
>> One tab too many?
>
> No.
Yeah, weird patchwork diff'ing artifact....
>>
>>> #define ETP_FW_VERSION_QUERY 0x01
>>> #define ETP_CAPABILITIES_QUERY 0x02
>>>
>>> @@ -24,6 +25,7 @@
>>> */
>>> #define ETP_REGISTER_READ 0x10
>>> #define ETP_REGISTER_WRITE 0x11
>>> +#define ETP_REGISTER_READWRITE 0x00
>>>
>>> /*
>>> * Hardware version 2 custom PS/2 command value
>>> @@ -93,6 +95,13 @@
>>> #define ETP_2FT_YMIN ( 0 + ETP_2FT_FUZZ)
>>> #define ETP_2FT_YMAX (192 - ETP_2FT_FUZZ)
>>>
>>> +/*
>>> + * v3 hardware has 2 kinds of packet types.
>>> + */
>>> +#define PACKET_UNKNOWN 0x01
>>> +#define PACKET_V3_HEAD 0x02
>>> +#define PACKET_V3_TAIL 0x03
>>> +
>>> struct elantech_data {
>>> unsigned char reg_10;
>>> unsigned char reg_11;
>>> @@ -113,6 +122,8 @@ struct elantech_data {
>>> unsigned int single_finger_reports;
>>> unsigned int y_max;
>>> unsigned int y_2ft_max;
>>> + unsigned int prev_x;
>>> + unsigned int prev_y;
>>> unsigned char parity[256];
>>> };
>>>
>>> --
>>> 1.7.4.1
>>>
>>>
>> --
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>>
>
>
> --
> Thanks
> Wanlong Gao
>
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