Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751898AbdH1DTY (ORCPT ); Sun, 27 Aug 2017 23:19:24 -0400 Received: from emcscan.emc.com.tw ([192.72.220.5]:23025 "EHLO emcscan.emc.com.tw" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751768AbdH1DTX (ORCPT ); Sun, 27 Aug 2017 23:19:23 -0400 From: KT Liao To: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, dmitry.torokhov@gmail.com, ulrik.debie-os@e2big.org Cc: phoenix@emc.com.tw, kt.liao@emc.com.tw Subject: [PATCH] Input: elantech - Support new touchpad IC and extend elan's touchpad command Date: Mon, 28 Aug 2017 11:19:25 +0800 Message-Id: <1503890365-3438-1-git-send-email-kt.liao@emc.com.tw> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2725 Lines: 86 Origianl ic-body field is not sufficient for upcoming IC, Elan ps/2 driver extend the formation to support future IC. If the IC ver is 0xf, the setting of etd->hw_version still keep 4 And add a new command to indicate a real IC body Signed-off-by: KT Liao --- drivers/input/mouse/elantech.c | 21 ++++++++++++++++++++- drivers/input/mouse/elantech.h | 2 ++ 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 65c9de3..fd8eaed 100644 --- a/drivers/input/mouse/elantech.c +++ b/drivers/input/mouse/elantech.c @@ -1398,6 +1398,10 @@ static bool elantech_is_signature_valid(const unsigned char *param) param[2] < 40) return true; + /* hw_version 0x0F does not need to check rate */ + if ((param[0] & 0x0f) == 0x0f) + return true; + for (i = 0; i < ARRAY_SIZE(rates); i++) if (param[2] == rates[i]) return false; @@ -1593,7 +1597,7 @@ static int elantech_set_properties(struct elantech_data *etd) case 5: etd->hw_version = 3; break; - case 6 ... 14: + case 6 ... 15: etd->hw_version = 4; break; default: @@ -1647,6 +1651,7 @@ int elantech_init(struct psmouse *psmouse) int error = -EINVAL; unsigned char param[3]; struct input_dev *tp_dev; + int ver; psmouse->private = etd = kzalloc(sizeof(struct elantech_data), GFP_KERNEL); if (!etd) @@ -1695,6 +1700,20 @@ int elantech_init(struct psmouse *psmouse) etd->samples[0], etd->samples[1], etd->samples[2]); } + /*if ver == 0xf, it is ELAN new pattern + *which support a command for extend IC_body reading + */ + ver = (etd->fw_version & 0x0f0000) >> 16; + if (ver == 0x0F) { + if (etd->send_cmd(psmouse, ETP_ICBODY_QUERY, etd->icbody)) { + psmouse_err(psmouse, "failed to query icbody data\n"); + goto init_fail; + } + psmouse_info(psmouse, + "Elan ICBODY query result %02x, %02x, %02x\n", + etd->icbody[0], etd->icbody[1], etd->icbody[2]); + } + if (etd->samples[1] == 0x74 && etd->hw_version == 0x03) { /* * This module has a bug which makes absolute mode diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h index e1cbf40..10675ae 100644 --- a/drivers/input/mouse/elantech.h +++ b/drivers/input/mouse/elantech.h @@ -21,6 +21,7 @@ #define ETP_CAPABILITIES_QUERY 0x02 #define ETP_SAMPLE_QUERY 0x03 #define ETP_RESOLUTION_QUERY 0x04 +#define ETP_ICBODY_QUERY 0x05 /* * Command values for register reading or writing @@ -130,6 +131,7 @@ struct elantech_data { unsigned char debug; unsigned char capabilities[3]; unsigned char samples[3]; + unsigned char icbody[3]; bool paritycheck; bool jumpy_cursor; bool reports_pressure; -- 2.7.4