diff options
| author | JJ Ding <jj_ding@emc.com.tw> | 2011-09-20 22:42:51 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-09-20 22:46:27 -0700 |
| commit | 84a90b610a1473d732818ec5d041ab18eae77f14 (patch) | |
| tree | 23826221db7299bcce38f3ad35d4c42bd46531ad | |
| parent | 1dc6edec127e1fdb89d246189c232fe635d2f921 (diff) | |
Input: elantech - better support all those v2 variants
V2 hardware has many variants. This patch adddresses two issues:
- some model also has debounce packets, but with a different signature
than v3. Now we just check debounce for all v2 hardware.
- due to different scanning methods the hardware uses, x and y ranges have
to be calculated differently. And for some specific versions, we can just
see them as custom-made, so set {x, y} the same values as Windows driver
does.
Signed-off-by: JJ Ding <jj_ding@emc.com.tw>
Tested-by: Richard Schütz <r.schtz@t-online.de>
Reviewed-by: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
| -rw-r--r-- | drivers/input/mouse/elantech.c | 46 | ||||
| -rw-r--r-- | drivers/input/mouse/elantech.h | 1 |
2 files changed, 42 insertions, 5 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index b8733b377266..c2d91ebbadf4 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -613,6 +613,18 @@ static int elantech_packet_check_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; @@ -708,6 +720,10 @@ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse) break; case 2: + /* ignore debounce */ + if (elantech_debounce_check_v2(psmouse)) + return PSMOUSE_FULL_PACKET; + if (etd->paritycheck && !elantech_packet_check_v2(psmouse)) return PSMOUSE_BAD_DATA; @@ -825,7 +841,6 @@ static int elantech_set_range(struct psmouse *psmouse, struct elantech_data *etd = psmouse->private; unsigned char param[3]; unsigned char traces; - int i; switch (etd->hw_version) { case 1: @@ -844,12 +859,33 @@ static int elantech_set_range(struct psmouse *psmouse, *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; - *x_min = 0; - *y_min = 0; - *x_max = (etd->capabilities[1] - i) * 64; - *y_max = (etd->capabilities[2] - i) * 64; + + 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; diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h index 7ecaef0c07c4..9e5f1aabea7e 100644 --- a/drivers/input/mouse/elantech.h +++ b/drivers/input/mouse/elantech.h @@ -19,6 +19,7 @@ #define ETP_FW_ID_QUERY 0x00 #define ETP_FW_VERSION_QUERY 0x01 #define ETP_CAPABILITIES_QUERY 0x02 +#define ETP_SAMPLE_QUERY 0x03 /* * Command values for register reading or writing |