From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-1?Q?=C9ric_Piel?= Subject: [PATCH 2/6] elantech: distinguish various hardware/firmware versions Date: Sat, 14 May 2011 08:46:06 +0200 Message-ID: <4DCE252E.2040403@tudelft.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mailservice.tudelft.nl ([130.161.131.5]:55141 "EHLO mailservice.tudelft.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755951Ab1ENLIM (ORCPT ); Sat, 14 May 2011 07:08:12 -0400 Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Dmitry Torokhov Cc: "linux-input@vger.kernel.org" , Henrik Rydberg , Chris Bagwell , Florian Ragwitz According to the protocol document, there are a couple of different versions of the hardware and firmware. Using the version number, it should be possible to distinguish between them, at least for the properties we care about. Signed-off-by: =C9ric Piel --- drivers/input/mouse/elantech.c | 34 +++++++++++++++++++++-----------= -- drivers/input/mouse/elantech.h | 10 +++++++++- 2 files changed, 30 insertions(+), 14 deletions(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elant= ech.c index 04d9bf3..badb2ea 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -719,15 +719,32 @@ int elantech_init(struct psmouse *psmouse) * Assume every version greater than this is new EeePC style * hardware with 6 byte packets */ - if (etd->fw_version >=3D 0x020030) { + if (etd->fw_version >=3D 0x020800) { etd->hw_version =3D 2; /* For now show extra debug information */ etd->debug =3D 1; - /* Don't know how to do parity checking for version 2 */ - etd->paritycheck =3D 0; + etd->paritycheck =3D ETP_CONST_CHECK; + etd->reports_pres =3D 1; + } else if (etd->fw_version =3D=3D 0x020030) { + etd->hw_version =3D 2; + /* For now show extra debug information */ + etd->debug =3D 1; + etd->paritycheck =3D ETP_EF113_CHECK; + etd->reports_pres =3D 0; + } else if ((etd->fw_version =3D=3D 0x020022) || (etd->fw_version =3D=3D= 0x020600)) { + /* + * This firmware suffers from misreporting coordinates when + * a touch action starts causing the mouse cursor or scrolled page + * to jump. Enable a workaround. + */ + pr_info("firmware version 2.0.34/2.6.0 detected, enabling jumpy curs= or workaround\n"); + etd->jumpy_cursor =3D 1; + etd->debug =3D 1; + etd->hw_version =3D 1; + etd->paritycheck =3D ETP_FULL_PC; } else { etd->hw_version =3D 1; - etd->paritycheck =3D 1; + etd->paritycheck =3D ETP_FULL_PC; } =20 pr_info("assuming hardware version %d, firmware version %d.%d.%d\n", @@ -741,15 +758,6 @@ int elantech_init(struct psmouse *psmouse) param[0], param[1], param[2]); etd->capabilities =3D param[0]; =20 - /* - * This firmware suffers from misreporting coordinates when - * a touch action starts causing the mouse cursor or scrolled page - * to jump. Enable a workaround. - */ - if (etd->fw_version =3D=3D 0x020022 || etd->fw_version =3D=3D 0x02060= 0) { - pr_info("firmware version 2.0.34/2.6.0 detected, enabling jumpy curs= or workaround\n"); - etd->jumpy_cursor =3D true; - } =20 if (elantech_set_absolute_mode(psmouse)) { pr_err("failed to put touchpad into absolute mode.\n"); diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elant= ech.h index aa4aac5..257d419 100644 --- a/drivers/input/mouse/elantech.h +++ b/drivers/input/mouse/elantech.h @@ -100,14 +100,22 @@ struct elantech_data { unsigned char reg_26; unsigned char debug; unsigned char capabilities; - bool paritycheck; + unsigned char paritycheck; bool jumpy_cursor; + unsigned char reports_pres :1; unsigned char hw_version; unsigned int fw_version; unsigned int single_finger_reports; unsigned char parity[256]; }; =20 +enum paritycheck_types { + ETP_NOT_CHECK =3D 0, + ETP_FULL_PC, /* used in 4-byte protocol */ + ETP_EF113_CHECK, /* check used only on the EF113 */ + ETP_CONST_CHECK, /* used in 6-byte protocol, only checking constant b= its */ +}; + #ifdef CONFIG_MOUSE_PS2_ELANTECH int elantech_detect(struct psmouse *psmouse, bool set_properties); int elantech_init(struct psmouse *psmouse); --=20 1.7.5.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" = in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html