From patchwork Wed Aug 20 18:18:11 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulrik De Bie X-Patchwork-Id: 4753271 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 43B10C0338 for ; Wed, 20 Aug 2014 18:57:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2CD612015A for ; Wed, 20 Aug 2014 18:57:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 00A1E2012F for ; Wed, 20 Aug 2014 18:57:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752734AbaHTS5U (ORCPT ); Wed, 20 Aug 2014 14:57:20 -0400 Received: from e2big.org ([198.61.226.133]:52599 "EHLO e2big.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752743AbaHTS5T (ORCPT ); Wed, 20 Aug 2014 14:57:19 -0400 Received: from 78-23-174-213.access.telenet.be ([78.23.174.213] helo=lantern.debie) by e2big.org with esmtpsa (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.72) (envelope-from ) id 1XKATp-0000HW-Qz; Wed, 20 Aug 2014 20:19:29 +0200 From: Ulrik De Bie To: Dmitry Torokhov Cc: linux-input@vger.kernel.org, Hans de Goede , David Herrmann , ulrik.debie-os@e2big.org Subject: [PATCH RESEND v4 1/2] elantech: Add support for trackpoint found on some v3 models Date: Wed, 20 Aug 2014 20:18:11 +0200 Message-Id: <1408558692-11736-2-git-send-email-ulrik.debie-os@e2big.org> X-Mailer: git-send-email 2.1.0.rc1 In-Reply-To: <1408558692-11736-1-git-send-email-ulrik.debie-os@e2big.org> References: <1408558692-11736-1-git-send-email-ulrik.debie-os@e2big.org> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Some elantech v3 touchpad equipped laptops also have a trackpoint, before this commit, these give sync errors. With this patch, the trackpoint is provided as another input device: 'Elantech PS/2 TrackPoint' The patch will also output messages that do not follow the expected pattern. In the mean time I've seen 2 unknown packets occasionally: 0x04 , 0x00 , 0x00 , 0x00 , 0x00 , 0x00 0x00 , 0x00 , 0x00 , 0x02 , 0x00 , 0x00 I don't know what those are for, but they can be safely ignored. Currently all packets that are not known to v3 touchpad and where packet[3] (the fourth byte) lowest nibble is 6 are now recognized as PACKET_TRACKPOINT and processed by the new elantech_report_trackpoint. This has been verified to work on a laptop Lenovo L530 where the touchpad/trackpoint combined identify themselves as: psmouse serio1: elantech: assuming hardware version 3 (with firmware version 0x350f02) psmouse serio1: elantech: Synaptics capabilities query result 0xb9, 0x15, 0x0c. Reviewed-by: David Herrmann Reviewed-by: Hans de Goede Signed-off-by: Ulrik De Bie --- drivers/input/mouse/elantech.c | 122 +++++++++++++++++++++++++++++++++++++++-- drivers/input/mouse/elantech.h | 3 + 2 files changed, 121 insertions(+), 4 deletions(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index ee2a04d..5dd620a 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -403,6 +403,71 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse) input_sync(dev); } +static void elantech_report_trackpoint(struct psmouse *psmouse, + int packet_type) +{ + /* + * byte 0: 0 0 ~sx ~sy 0 M R L + * byte 1: sx 0 0 0 0 0 0 0 + * byte 2: sy 0 0 0 0 0 0 0 + * byte 3: 0 0 sy sx 0 1 1 0 + * byte 4: x7 x6 x5 x4 x3 x2 x1 x0 + * byte 5: y7 y6 y5 y4 y3 y2 y1 y0 + * + * x and y are written in two's complement spread + * over 9 bits with sx/sy the relative top bit and + * x7..x0 and y7..y0 the lower bits. + * The sign of y is opposite to what the input driver + * expects for a relative movement + */ + + struct elantech_data *etd = psmouse->private; + struct input_dev *tp_dev = etd->tp_dev; + unsigned char *packet = psmouse->packet; + int x, y; + u32 t; + + if (!tp_dev) { + static bool __section(.data.unlikely) __warned; + + if (!__warned) { + __warned = true; + psmouse_err(psmouse, "Unexpected trackpoint message\n"); + if (etd->debug == 1) + elantech_packet_dump(psmouse); + } + + return; + } + + input_report_key(tp_dev, BTN_LEFT, packet[0] & 0x01); + input_report_key(tp_dev, BTN_RIGHT, packet[0] & 0x02); + input_report_key(tp_dev, BTN_MIDDLE, packet[0] & 0x04); + + x = ((packet[1] & 0x80) ? 0U : 0xFFFFFF00U) | packet[4]; + y = -(int)(((packet[2] & 0x80) ? 0U : 0xFFFFFF00U) | packet[5]); + + input_report_rel(tp_dev, REL_X, x); + input_report_rel(tp_dev, REL_Y, y); + + t = (((u32)packet[0] & 0xF8) << 24) | ((u32)packet[1] << 16) + | (u32)packet[2] << 8 | (u32)packet[3]; + switch (t) { + case 0x00808036U: + case 0x10008026U: + case 0x20800016U: + case 0x30000006U: + break; + default: + /* Dump unexpected packet sequences if debug=1 (default) */ + if (etd->debug == 1) + elantech_packet_dump(psmouse); + break; + } + + input_sync(tp_dev); +} + /* * Interpret complete data packets and report absolute mode input events for * hardware version 3. (12 byte packets for two fingers) @@ -715,6 +780,8 @@ static int elantech_packet_check_v3(struct psmouse *psmouse) if ((packet[0] & 0x0c) == 0x0c && (packet[3] & 0xce) == 0x0c) return PACKET_V3_TAIL; + if ((packet[3] & 0x0f) == 0x06) + return PACKET_TRACKPOINT; } return PACKET_UNKNOWN; @@ -798,7 +865,10 @@ static psmouse_ret_t elantech_process_byte(struct psmouse *psmouse) if (packet_type == PACKET_UNKNOWN) return PSMOUSE_BAD_DATA; - elantech_report_absolute_v3(psmouse, packet_type); + if (packet_type == PACKET_TRACKPOINT) + elantech_report_trackpoint(psmouse, packet_type); + else + elantech_report_absolute_v3(psmouse, packet_type); break; case 4: @@ -1018,8 +1088,10 @@ static int elantech_get_resolution_v4(struct psmouse *psmouse, * Asus UX31 0x361f00 20, 15, 0e clickpad * Asus UX32VD 0x361f02 00, 15, 0e clickpad * Avatar AVIU-145A2 0x361f00 ? clickpad + * Fujitsu H730 0x570f00 c0, 14, 0c 3 hw buttons (**) * Gigabyte U2442 0x450f01 58, 17, 0c 2 hw buttons * Lenovo L430 0x350f02 b9, 15, 0c 2 hw buttons (*) + * Lenovo L530 0x350f02 b9, 15, 0c 2 hw buttons (*) * Samsung NF210 0x150b00 78, 14, 0a 2 hw buttons * Samsung NP770Z5E 0x575f01 10, 15, 0f clickpad * Samsung NP700Z5B 0x361f06 21, 15, 0f clickpad @@ -1029,6 +1101,8 @@ static int elantech_get_resolution_v4(struct psmouse *psmouse, * Samsung RF710 0x450f00 ? 2 hw buttons * System76 Pangolin 0x250f01 ? 2 hw buttons * (*) + 3 trackpoint buttons + * (**) + 0 trackpoint buttons + * Note: Lenovo L430 and Lenovo L430 have the same fw_version/caps */ static void elantech_set_buttonpad_prop(struct psmouse *psmouse) { @@ -1324,6 +1398,10 @@ int elantech_detect(struct psmouse *psmouse, bool set_properties) */ static void elantech_disconnect(struct psmouse *psmouse) { + struct elantech_data *etd = psmouse->private; + + if (etd->tp_dev) + input_unregister_device(etd->tp_dev); sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, &elantech_attr_group); kfree(psmouse->private); @@ -1438,8 +1516,10 @@ static int elantech_set_properties(struct elantech_data *etd) int elantech_init(struct psmouse *psmouse) { struct elantech_data *etd; - int i, error; + int i; + int error = -EINVAL; unsigned char param[3]; + struct input_dev *tp_dev; psmouse->private = etd = kzalloc(sizeof(struct elantech_data), GFP_KERNEL); if (!etd) @@ -1498,14 +1578,48 @@ int elantech_init(struct psmouse *psmouse) goto init_fail; } + /* The MSB indicates the presence of the trackpoint */ + if ((etd->capabilities[0] & 0x80) == 0x80) { + tp_dev = input_allocate_device(); + + if (!tp_dev) { + error = -ENOMEM; + goto init_fail_tp_alloc; + } + + etd->tp_dev = tp_dev; + snprintf(etd->tp_phys, sizeof(etd->tp_phys), "%s/input1", + psmouse->ps2dev.serio->phys); + tp_dev->phys = etd->tp_phys; + tp_dev->name = "Elantech PS/2 TrackPoint"; + tp_dev->id.bustype = BUS_I8042; + tp_dev->id.vendor = 0x0002; + tp_dev->id.product = PSMOUSE_ELANTECH; + tp_dev->id.version = 0x0000; + tp_dev->dev.parent = &psmouse->ps2dev.serio->dev; + tp_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REL); + tp_dev->relbit[BIT_WORD(REL_X)] = + BIT_MASK(REL_X) | BIT_MASK(REL_Y); + tp_dev->keybit[BIT_WORD(BTN_LEFT)] = + BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_MIDDLE) | + BIT_MASK(BTN_RIGHT); + error = input_register_device(etd->tp_dev); + if (error < 0) + goto init_fail_tp_reg; + } + psmouse->protocol_handler = elantech_process_byte; psmouse->disconnect = elantech_disconnect; psmouse->reconnect = elantech_reconnect; psmouse->pktsize = etd->hw_version > 1 ? 6 : 4; return 0; - + init_fail_tp_reg: + input_free_device(tp_dev); + init_fail_tp_alloc: + sysfs_remove_group(&psmouse->ps2dev.serio->dev.kobj, + &elantech_attr_group); init_fail: kfree(etd); - return -1; + return error; } diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h index 9e0e2a1..e410336 100644 --- a/drivers/input/mouse/elantech.h +++ b/drivers/input/mouse/elantech.h @@ -94,6 +94,7 @@ #define PACKET_V4_HEAD 0x05 #define PACKET_V4_MOTION 0x06 #define PACKET_V4_STATUS 0x07 +#define PACKET_TRACKPOINT 0x08 /* * track up to 5 fingers for v4 hardware @@ -114,6 +115,8 @@ struct finger_pos { }; struct elantech_data { + struct input_dev *tp_dev; /* Relative device for trackpoint */ + char tp_phys[32]; unsigned char reg_07; unsigned char reg_10; unsigned char reg_11;