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| author | JJ Ding <jj_ding@emc.com.tw> | 2011-11-08 22:13:14 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-11-09 21:19:47 -0800 |
| commit | 3940d6185a982a970ff562e085caccbdd62f40bb (patch) | |
| tree | c162bbf91f5cd5cd00e8acc2797ca365716ca004 /drivers | |
| parent | b42c909743595208f7987e331f0921b73af2ce25 (diff) | |
| download | linux-3940d6185a982a970ff562e085caccbdd62f40bb.tar.gz linux-3940d6185a982a970ff562e085caccbdd62f40bb.tar.bz2 linux-3940d6185a982a970ff562e085caccbdd62f40bb.zip | |
Input: elantech - adjust hw_version detection logic
This patch fixes some v3 hardware (fw_version: 0x150500) wrongly detected
as v2 hardware.
Reported-by: Marc Dietrich <marvin24@gmx.de>
Signed-off-by: JJ Ding <jj_ding@emc.com.tw>
Tested-By: Marc Dietrich <marvin24@gmx.de>
Acked-by: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/mouse/elantech.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 09b93b11a274..e2a9867c19d5 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1210,18 +1210,28 @@ static int elantech_reconnect(struct psmouse *psmouse) */ static int elantech_set_properties(struct elantech_data *etd) { + /* This represents the version of IC body. */ int ver = (etd->fw_version & 0x0f0000) >> 16; + /* Early version of Elan touchpads doesn't obey the rule. */ 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; + else { + switch (ver) { + case 2: + case 4: + etd->hw_version = 2; + break; + case 5: + etd->hw_version = 3; + break; + case 6: + etd->hw_version = 4; + break; + default: + return -1; + } + } /* * Turn on packet checking by default. |