From patchwork Tue May 21 13:27:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Tissoires X-Patchwork-Id: 10953699 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1FC7413AD for ; Tue, 21 May 2019 13:28:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0DF121FF29 for ; Tue, 21 May 2019 13:28:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 024261FFCA; Tue, 21 May 2019 13:28:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6931D26220 for ; Tue, 21 May 2019 13:28:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727262AbfEUN1f (ORCPT ); Tue, 21 May 2019 09:27:35 -0400 Received: from mx1.redhat.com ([209.132.183.28]:47700 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726750AbfEUN1f (ORCPT ); Tue, 21 May 2019 09:27:35 -0400 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DA8573086229; Tue, 21 May 2019 13:27:31 +0000 (UTC) Received: from plouf.redhat.com (ovpn-116-49.ams2.redhat.com [10.36.116.49]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4AD5E784AF; Tue, 21 May 2019 13:27:25 +0000 (UTC) From: Benjamin Tissoires To: Dmitry Torokhov , KT Liao , Rob Herring , Aaron Ma , Hans de Goede Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Benjamin Tissoires Subject: [PATCH v2 01/10] Input: elantech - query the min/max information beforehand too Date: Tue, 21 May 2019 15:27:03 +0200 Message-Id: <20190521132712.2818-2-benjamin.tissoires@redhat.com> In-Reply-To: <20190521132712.2818-1-benjamin.tissoires@redhat.com> References: <20190521132712.2818-1-benjamin.tissoires@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.42]); Tue, 21 May 2019 13:27:35 +0000 (UTC) Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For the latest generation of Elantech touchpads, we need to forward the min/max information from PS/2 to SMBus. Prepare this work by fetching the information before creating the SMBus companion device. Signed-off-by: Benjamin Tissoires --- no changes in v2 --- drivers/input/mouse/elantech.c | 160 +++++++++++++++------------------ drivers/input/mouse/elantech.h | 5 ++ 2 files changed, 79 insertions(+), 86 deletions(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index a7f8b1614559..5953c21774d7 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -994,88 +994,6 @@ static int elantech_set_absolute_mode(struct psmouse *psmouse) return rc; } -static int elantech_set_range(struct psmouse *psmouse, - unsigned int *x_min, unsigned int *y_min, - unsigned int *x_max, unsigned int *y_max, - unsigned int *width) -{ - struct elantech_data *etd = psmouse->private; - struct elantech_device_info *info = &etd->info; - unsigned char param[3]; - unsigned char traces; - - switch (info->hw_version) { - case 1: - *x_min = ETP_XMIN_V1; - *y_min = ETP_YMIN_V1; - *x_max = ETP_XMAX_V1; - *y_max = ETP_YMAX_V1; - break; - - case 2: - if (info->fw_version == 0x020800 || - info->fw_version == 0x020b00 || - info->fw_version == 0x020030) { - *x_min = ETP_XMIN_V2; - *y_min = ETP_YMIN_V2; - *x_max = ETP_XMAX_V2; - *y_max = ETP_YMAX_V2; - } else { - int i; - int fixed_dpi; - - i = (info->fw_version > 0x020800 && - info->fw_version < 0x020900) ? 1 : 2; - - if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) - return -1; - - fixed_dpi = param[1] & 0x10; - - if (((info->fw_version >> 16) == 0x14) && fixed_dpi) { - if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, param)) - return -1; - - *x_max = (info->capabilities[1] - i) * param[1] / 2; - *y_max = (info->capabilities[2] - i) * param[2] / 2; - } else if (info->fw_version == 0x040216) { - *x_max = 819; - *y_max = 405; - } else if (info->fw_version == 0x040219 || info->fw_version == 0x040215) { - *x_max = 900; - *y_max = 500; - } else { - *x_max = (info->capabilities[1] - i) * 64; - *y_max = (info->capabilities[2] - i) * 64; - } - } - break; - - case 3: - if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) - return -1; - - *x_max = (0x0f & param[0]) << 8 | param[1]; - *y_max = (0xf0 & param[0]) << 4 | param[2]; - break; - - case 4: - if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) - return -1; - - *x_max = (0x0f & param[0]) << 8 | param[1]; - *y_max = (0xf0 & param[0]) << 4 | param[2]; - traces = info->capabilities[1]; - if ((traces < 2) || (traces > *x_max)) - return -1; - - *width = *x_max / (traces - 1); - break; - } - - return 0; -} - /* * (value from firmware) * 10 + 790 = dpi * we also have to convert dpi to dots/mm (*10/254 to avoid floating point) @@ -1200,10 +1118,9 @@ static int elantech_set_input_params(struct psmouse *psmouse) struct input_dev *dev = psmouse->dev; struct elantech_data *etd = psmouse->private; struct elantech_device_info *info = &etd->info; - unsigned int x_min = 0, y_min = 0, x_max = 0, y_max = 0, width = 0; - - if (elantech_set_range(psmouse, &x_min, &y_min, &x_max, &y_max, &width)) - return -1; + unsigned int x_min = info->x_min, y_min = info->y_min, + x_max = info->x_max, y_max = info->y_max, + width = info->width; __set_bit(INPUT_PROP_POINTER, dev->propbit); __set_bit(EV_KEY, dev->evbit); @@ -1687,6 +1604,7 @@ static int elantech_query_info(struct psmouse *psmouse, struct elantech_device_info *info) { unsigned char param[3]; + unsigned char traces; memset(info, 0, sizeof(*info)); @@ -1755,6 +1673,76 @@ static int elantech_query_info(struct psmouse *psmouse, } } + /* query range information */ + switch (info->hw_version) { + case 1: + info->x_min = ETP_XMIN_V1; + info->y_min = ETP_YMIN_V1; + info->x_max = ETP_XMAX_V1; + info->y_max = ETP_YMAX_V1; + break; + + case 2: + if (info->fw_version == 0x020800 || + info->fw_version == 0x020b00 || + info->fw_version == 0x020030) { + info->x_min = ETP_XMIN_V2; + info->y_min = ETP_YMIN_V2; + info->x_max = ETP_XMAX_V2; + info->y_max = ETP_YMAX_V2; + } else { + int i; + int fixed_dpi; + + i = (info->fw_version > 0x020800 && + info->fw_version < 0x020900) ? 1 : 2; + + if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + return -EINVAL; + + fixed_dpi = param[1] & 0x10; + + if (((info->fw_version >> 16) == 0x14) && fixed_dpi) { + if (info->send_cmd(psmouse, ETP_SAMPLE_QUERY, param)) + return -EINVAL; + + info->x_max = (info->capabilities[1] - i) * param[1] / 2; + info->y_max = (info->capabilities[2] - i) * param[2] / 2; + } else if (info->fw_version == 0x040216) { + info->x_max = 819; + info->y_max = 405; + } else if (info->fw_version == 0x040219 || info->fw_version == 0x040215) { + info->x_max = 900; + info->y_max = 500; + } else { + info->x_max = (info->capabilities[1] - i) * 64; + info->y_max = (info->capabilities[2] - i) * 64; + } + } + break; + + case 3: + if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + return -EINVAL; + + info->x_max = (0x0f & param[0]) << 8 | param[1]; + info->y_max = (0xf0 & param[0]) << 4 | param[2]; + break; + + case 4: + if (info->send_cmd(psmouse, ETP_FW_ID_QUERY, param)) + return -EINVAL; + + info->x_max = (0x0f & param[0]) << 8 | param[1]; + info->y_max = (0xf0 & param[0]) << 4 | param[2]; + traces = info->capabilities[1]; + if ((traces < 2) || (traces > info->x_max)) + return -EINVAL; + + info->width = info->x_max / (traces - 1); + break; + } + return 0; } diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h index 119727085a60..194503ed59c5 100644 --- a/drivers/input/mouse/elantech.h +++ b/drivers/input/mouse/elantech.h @@ -144,8 +144,13 @@ struct elantech_device_info { unsigned char debug; unsigned char hw_version; unsigned int fw_version; + unsigned int x_min; + unsigned int y_min; + unsigned int x_max; + unsigned int y_max; unsigned int x_res; unsigned int y_res; + unsigned int width; unsigned int bus; bool paritycheck; bool jumpy_cursor;