diff options
| author | Ulrik De Bie <ulrik.debie-os@e2big.org> | 2014-11-07 23:57:34 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-11-08 00:26:45 -0800 |
| commit | 0dc1587905a50f8f61bbc29e850aa592821e4bea (patch) | |
| tree | 38d2d6ac8703344013a513c02ae067605d3af194 | |
| parent | caeb0d37fa3e387eb0dd22e5d497523c002033d1 (diff) | |
Input: elantech - fix crc_enabled for Fujitsu H730
The Fujitsu H730 does not work with crc_enabled = 0, even though the
crc_enabled bit in the firmware version indicated it would. When switching
this value to crc_enabled to 1, the touchpad works. This patch uses DMI to
detect H730.
Reported-by: Stefan Valouch <stefan@valouch.com>
Tested-by: Stefan Valouch <stefan@valouch.com>
Tested-by: Alfredo Gemma <alfredo.gemma@gmail.com>
Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
| -rw-r--r-- | drivers/input/mouse/elantech.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 53ddff91ab2e..ce699eba9adc 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1451,6 +1451,22 @@ static int elantech_reconnect(struct psmouse *psmouse) } /* + * Some hw_version 4 models do not work with crc_disabled + */ +static const struct dmi_system_id elantech_dmi_force_crc_enabled[] = { +#if defined(CONFIG_DMI) && defined(CONFIG_X86) + { + /* Fujitsu H730 does not work with crc_enabled == 0 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "CELSIUS H730"), + }, + }, +#endif + { } +}; + +/* * Some hw_version 3 models go into error state when we try to set * bit 3 and/or bit 1 of r10. */ @@ -1525,7 +1541,8 @@ static int elantech_set_properties(struct elantech_data *etd) * The signatures of v3 and v4 packets change depending on the * value of this hardware flag. */ - etd->crc_enabled = ((etd->fw_version & 0x4000) == 0x4000); + etd->crc_enabled = (etd->fw_version & 0x4000) == 0x4000 || + dmi_check_system(elantech_dmi_force_crc_enabled); /* Enable real hardware resolution on hw_version 3 ? */ etd->set_hw_resolution = !dmi_check_system(no_hw_res_dmi_table); |