From patchwork Sat Sep 19 21:41:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= X-Patchwork-Id: 254972 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3215BC433DB for ; Sat, 19 Sep 2020 21:49:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B5A9B222BB for ; Sat, 19 Sep 2020 21:49:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="puozsXpu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726730AbgISVtu (ORCPT ); Sat, 19 Sep 2020 17:49:50 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:5170 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726722AbgISVtu (ORCPT ); Sat, 19 Sep 2020 17:49:50 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4Bv4012VnPzHm; Sat, 19 Sep 2020 23:41:21 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1600551681; bh=3doK0FUutvkvWAsR9+JjynwPIbyNyVd+O7Di1WbQwyM=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=puozsXpuo7xKpssaq0FGYBcxdO7aTszp1cIztgTJdzTmlGR1uMJV3//Ei8DC+bBEy LI1ZxzKvqOthkbAywHEinoTuA0s/FjED6sCzYGjjt+yfdesHPFJU5DoDBc979+jh8N VJ2fp8wILLw9RuUn1+hZkLeFaMDxhhgcu1r9NORWb6uNPIAy75SmL2GKyi1nevmhWv 9qbna6WoElMtGtDRBX/Y00pS7plT0iVkdiYJvpn8kpdmRyOf5VitRwNG7Z/dLK2eec A1QIZH5XjYPwhvVVMR2bm6Vd6J5c9b9wmCNqiuqGWUQWMYjpfa5OyC8mFqN7ggGgIy c9hq/bLC48XGA== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Sat, 19 Sep 2020 23:41:21 +0200 Message-Id: <1d2d6d628c00a292a2fc230ab6f274fd22ad78e1.1600551334.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v7 1/4] input: elants: document some registers and values MIME-Version: 1.0 To: Dmitry Torokhov , Dmitry Osipenko , Henrik Rydberg , James Chen , Johnny Chuang , Scott Liu , "Gustavo A. R. Silva" , Harry Cutts , Peter Hutterer Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Add information found in downstream kernels, to make the code less magic. Signed-off-by: Michał Mirosław Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko --- drivers/input/touchscreen/elants_i2c.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index 50c348297e38..d51cb910fba1 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -82,7 +82,7 @@ #define HEADER_REPORT_10_FINGER 0x62 -/* Header (4 bytes) plus 3 fill 10-finger packets */ +/* Header (4 bytes) plus 3 full 10-finger packets */ #define MAX_PACKET_SIZE 169 #define BOOT_TIME_DELAY_MS 50 @@ -97,6 +97,10 @@ #define E_INFO_PHY_SCAN 0xD7 #define E_INFO_PHY_DRIVER 0xD8 +/* FW write command, 0x54 0x?? 0x0, 0x01 */ +#define E_POWER_STATE_SLEEP 0x50 +#define E_POWER_STATE_RESUME 0x58 + #define MAX_RETRIES 3 #define MAX_FW_UPDATE_RETRIES 30 @@ -269,8 +273,8 @@ static int elants_i2c_calibrate(struct elants_data *ts) { struct i2c_client *client = ts->client; int ret, error; - static const u8 w_flashkey[] = { 0x54, 0xC0, 0xE1, 0x5A }; - static const u8 rek[] = { 0x54, 0x29, 0x00, 0x01 }; + static const u8 w_flashkey[] = { CMD_HEADER_WRITE, 0xC0, 0xE1, 0x5A }; + static const u8 rek[] = { CMD_HEADER_WRITE, 0x29, 0x00, 0x01 }; static const u8 rek_resp[] = { CMD_HEADER_REK, 0x66, 0x66, 0x66 }; disable_irq(client->irq); @@ -1388,7 +1392,9 @@ static int __maybe_unused elants_i2c_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct elants_data *ts = i2c_get_clientdata(client); - const u8 set_sleep_cmd[] = { 0x54, 0x50, 0x00, 0x01 }; + const u8 set_sleep_cmd[] = { + CMD_HEADER_WRITE, E_POWER_STATE_SLEEP, 0x00, 0x01 + }; int retry_cnt; int error; @@ -1425,7 +1431,9 @@ static int __maybe_unused elants_i2c_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct elants_data *ts = i2c_get_clientdata(client); - const u8 set_active_cmd[] = { 0x54, 0x58, 0x00, 0x01 }; + const u8 set_active_cmd[] = { + CMD_HEADER_WRITE, E_POWER_STATE_RESUME, 0x00, 0x01 + }; int retry_cnt; int error; From patchwork Sat Sep 19 21:41:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= X-Patchwork-Id: 254971 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30AB4C43466 for ; Sat, 19 Sep 2020 21:49:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E77892311B for ; Sat, 19 Sep 2020 21:49:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="k1KYWSiE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726729AbgISVtv (ORCPT ); Sat, 19 Sep 2020 17:49:51 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:54802 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726673AbgISVtv (ORCPT ); Sat, 19 Sep 2020 17:49:51 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4Bv4015J2HzZx; Sat, 19 Sep 2020 23:41:21 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1600551681; bh=SuKYXjpw/qBWpC6YXxydUVb5w6cLmNOjpgdbQogN4GI=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=k1KYWSiEQ0G57VHbe2DUQP2wd9wWK1zPmVLheqDn/cs07M5w4oLTB5jJqxZmhS/4P QOQ5SgKcRqY383ycQMKlTYjK+vbOR1/Y47ME3hMqoym2UNiysidj2Cu6CRz4CWBINi 3xUCdAtFvF3LGD1v1JXV5oHvQQK775HrDN2ZRvPwwYn/tsQlrQ3pEOWM1kz0mw+GYm 2VpWgQfdh80wtwctXRYrd9SOMc3AH1iMzvA+LectuUgkxu7FCLFrj/U9AJMInc2h0/ WV8xSaAO+8YLeDXyPKIEx1ZUEwcba7GiI1VhqUN4cE7cGIXXxtOA9Vl+BdwDFL1IMN 2xClO9Bi6j1aw== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Sat, 19 Sep 2020 23:41:21 +0200 Message-Id: <4c8ba4cfa4ffde133627e19694683d5bc7b72913.1600551334.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v7 2/4] input: elants: support old touch report format MIME-Version: 1.0 To: Dmitry Torokhov , Dmitry Osipenko , Henrik Rydberg , James Chen , Johnny Chuang , Scott Liu , "Gustavo A. R. Silva" , Harry Cutts , Peter Hutterer Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Support ELAN touchpad sensor with older firmware as found on eg. Asus Transformer Pads. Signed-off-by: Michał Mirosław Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko --- drivers/input/touchscreen/elants_i2c.c | 36 ++++++++++++++++++-------- 1 file changed, 25 insertions(+), 11 deletions(-) diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index d51cb910fba1..f1bf3e000e96 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -69,6 +69,7 @@ #define CMD_HEADER_REK 0x66 /* FW position data */ +#define PACKET_SIZE_OLD 40 #define PACKET_SIZE 55 #define MAX_CONTACT_NUM 10 #define FW_POS_HEADER 0 @@ -853,7 +854,8 @@ static int elants_i2c_fw_update(struct elants_data *ts) * Event reporting. */ -static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf) +static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf, + size_t report_len) { struct input_dev *input = ts->input; unsigned int n_fingers; @@ -866,7 +868,8 @@ static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf) buf[FW_POS_STATE]; dev_dbg(&ts->client->dev, - "n_fingers: %u, state: %04x\n", n_fingers, finger_state); + "n_fingers: %u, state: %04x, report_len: %zu\n", + n_fingers, finger_state, report_len); /* Note: all fingers have the same tool type */ tool_type = buf[FW_POS_TOOL_TYPE] & BIT(0) ? @@ -880,8 +883,16 @@ static void elants_i2c_mt_event(struct elants_data *ts, u8 *buf) pos = &buf[FW_POS_XY + i * 3]; x = (((u16)pos[0] & 0xf0) << 4) | pos[1]; y = (((u16)pos[0] & 0x0f) << 8) | pos[2]; - p = buf[FW_POS_PRESSURE + i]; - w = buf[FW_POS_WIDTH + i]; + if (report_len == PACKET_SIZE_OLD) { + w = buf[FW_POS_WIDTH + i / 2]; + w >>= 4 * (~i & 1); // little-endian-nibbles + w |= w << 4; + w |= !w; + p = w; + } else { + p = buf[FW_POS_PRESSURE + i]; + w = buf[FW_POS_WIDTH + i]; + } dev_dbg(&ts->client->dev, "i=%d x=%d y=%d p=%d w=%d\n", i, x, y, p, w); @@ -913,7 +924,8 @@ static u8 elants_i2c_calculate_checksum(u8 *buf) return checksum; } -static void elants_i2c_event(struct elants_data *ts, u8 *buf) +static void elants_i2c_event(struct elants_data *ts, u8 *buf, + size_t report_len) { u8 checksum = elants_i2c_calculate_checksum(buf); @@ -927,7 +939,7 @@ static void elants_i2c_event(struct elants_data *ts, u8 *buf) "%s: unknown packet type: %02x\n", __func__, buf[FW_POS_HEADER]); else - elants_i2c_mt_event(ts, buf); + elants_i2c_mt_event(ts, buf, report_len); } static irqreturn_t elants_i2c_irq(int irq, void *_dev) @@ -985,7 +997,8 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev) break; case QUEUE_HEADER_SINGLE: - elants_i2c_event(ts, &ts->buf[HEADER_SIZE]); + elants_i2c_event(ts, &ts->buf[HEADER_SIZE], + ts->buf[FW_HDR_LENGTH]); break; case QUEUE_HEADER_NORMAL: @@ -998,17 +1011,18 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev) } report_len = ts->buf[FW_HDR_LENGTH] / report_count; - if (report_len != PACKET_SIZE) { + if (report_len != PACKET_SIZE && + report_len != PACKET_SIZE_OLD) { dev_err(&client->dev, - "mismatching report length: %*ph\n", + "unsupported report length: %*ph\n", HEADER_SIZE, ts->buf); break; } for (i = 0; i < report_count; i++) { u8 *buf = ts->buf + HEADER_SIZE + - i * PACKET_SIZE; - elants_i2c_event(ts, buf); + i * report_len; + elants_i2c_event(ts, buf, report_len); } break; From patchwork Sat Sep 19 21:41:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= X-Patchwork-Id: 254970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BEC16C43464 for ; Sat, 19 Sep 2020 21:49:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 81DEC22211 for ; Sat, 19 Sep 2020 21:49:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="Ejy2x38J" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726626AbgISVtu (ORCPT ); Sat, 19 Sep 2020 17:49:50 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:6738 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726598AbgISVtu (ORCPT ); Sat, 19 Sep 2020 17:49:50 -0400 X-Greylist: delayed 507 seconds by postgrey-1.27 at vger.kernel.org; Sat, 19 Sep 2020 17:49:49 EDT Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4Bv402664bzcg; Sat, 19 Sep 2020 23:41:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1600551682; bh=sjHesEuhUQBPTBR5PKdh6Su6/OO5b6xTTe6dLO4s9HI=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=Ejy2x38Jl2CufmcXcBr0JO0Vfrc+ZlEVXVGRqVHCRKcgy3XgwPm0gyKFSj+n+XO9J Jpwfh4PxPU/Slwv5DG75tQQz92wkcVQRFpF+VDNpYvUJr0m3qXW6ON7O7eYz8zC/u+ 4Ppmy9BwGfj9EXvQOPrgAn4v+ncAsOroFeBCgYkqzl/XNhCjT4D/s1hUfAwf6y79IJ mLr84Qv1qLxfW5x3F9aGzG9IvLXIQOxCnezAlyf+Qy5X/8hLuWqmM7noJY17Upmr1Y 9/Xi65lZHG08RH5LrJ964e1sxmsvtKTkKwZPaTLgPEuAXIhvztJUmpVr+9GIc5mIJO FTa6BjvVzdXkQ== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Sat, 19 Sep 2020 23:41:22 +0200 Message-Id: In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v7 3/4] input: elants: read touchscreen size for EKTF3624 MIME-Version: 1.0 To: Dmitry Torokhov , Dmitry Osipenko , Henrik Rydberg , James Chen , Johnny Chuang , Scott Liu , "Gustavo A. R. Silva" , Harry Cutts , Peter Hutterer Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org EKTF3624 as present in Asus TF300T tablet has touchscreen size encoded in different registers. Signed-off-by: Michał Mirosław Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko --- drivers/input/touchscreen/elants_i2c.c | 84 ++++++++++++++++++++++++-- 1 file changed, 79 insertions(+), 5 deletions(-) diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index f1bf3e000e96..c24d8cdc4251 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -35,7 +35,7 @@ #include #include #include -#include +#include #include #include #include @@ -43,6 +43,10 @@ /* Device, Driver information */ #define DEVICE_NAME "elants_i2c" +/* Device IDs */ +#define EKTH3500 0 +#define EKTF3624 1 + /* Convert from rows or columns into resolution */ #define ELAN_TS_RESOLUTION(n, m) (((n) - 1) * (m)) @@ -94,6 +98,8 @@ #define E_ELAN_INFO_REK 0xD0 #define E_ELAN_INFO_TEST_VER 0xE0 #define E_ELAN_INFO_FW_ID 0xF0 +#define E_INFO_X_RES 0x60 +#define E_INFO_Y_RES 0x63 #define E_INFO_OSR 0xD6 #define E_INFO_PHY_SCAN 0xD7 #define E_INFO_PHY_DRIVER 0xD8 @@ -157,6 +163,7 @@ struct elants_data { bool wake_irq_enabled; bool keep_power_in_suspend; + u8 chip_id; /* Must be last to be used for DMA operations */ u8 buf[MAX_PACKET_SIZE] ____cacheline_aligned; @@ -434,7 +441,58 @@ static int elants_i2c_query_bc_version(struct elants_data *ts) return 0; } -static int elants_i2c_query_ts_info(struct elants_data *ts) +static int elants_i2c_query_ts_info_ektf(struct elants_data *ts) +{ + struct i2c_client *client = ts->client; + int error; + u8 resp[4]; + u16 phy_x, phy_y; + const u8 get_xres_cmd[] = { + CMD_HEADER_READ, E_INFO_X_RES, 0x00, 0x00 + }; + const u8 get_yres_cmd[] = { + CMD_HEADER_READ, E_INFO_Y_RES, 0x00, 0x00 + }; + + /* Get X/Y size in mm */ + error = elants_i2c_execute_command(client, get_xres_cmd, + sizeof(get_xres_cmd), + resp, sizeof(resp), 1, + "get X size"); + if (error) + return error; + + phy_x = resp[2] | ((resp[3] & 0xF0) << 4); + + error = elants_i2c_execute_command(client, get_yres_cmd, + sizeof(get_yres_cmd), + resp, sizeof(resp), 1, + "get Y size"); + if (error) + return error; + + phy_y = resp[2] | ((resp[3] & 0xF0) << 4); + + if (!phy_x || !phy_y) { + dev_warn(&client->dev, + "invalid size data: %d x %d mm\n", + phy_x, phy_y); + return 0; + } + + dev_dbg(&client->dev, "phy_x=%d, phy_y=%d\n", phy_x, phy_y); + + /* calculate resolution from size */ + ts->x_max = 2240-1; + ts->x_res = DIV_ROUND_CLOSEST(ts->prop.max_x, phy_x); + + ts->y_max = 1408-1; + ts->y_res = DIV_ROUND_CLOSEST(ts->prop.max_y, phy_y); + + return 0; +} + +static int elants_i2c_query_ts_info_ekth(struct elants_data *ts) { struct i2c_client *client = ts->client; int error; @@ -588,8 +646,20 @@ static int elants_i2c_initialize(struct elants_data *ts) error = elants_i2c_query_fw_version(ts); if (!error) error = elants_i2c_query_test_version(ts); - if (!error) - error = elants_i2c_query_ts_info(ts); + + switch (ts->chip_id) { + case EKTH3500: + if (!error) + error = elants_i2c_query_ts_info_ekth(ts); + break; + case EKTF3624: + if (!error) + error = elants_i2c_query_ts_info_ektf(ts); + break; + default: + unreachable(); + break; + } if (error) ts->iap_mode = ELAN_IAP_RECOVERY; @@ -1266,6 +1336,9 @@ static int elants_i2c_probe(struct i2c_client *client, ts->client = client; i2c_set_clientdata(client, ts); + if (client->dev.of_node) + ts->chip_id = (uintptr_t)of_device_get_match_data(&client->dev); + ts->vcc33 = devm_regulator_get(&client->dev, "vcc33"); if (IS_ERR(ts->vcc33)) { error = PTR_ERR(ts->vcc33); @@ -1495,7 +1568,8 @@ MODULE_DEVICE_TABLE(acpi, elants_acpi_id); #ifdef CONFIG_OF static const struct of_device_id elants_of_match[] = { - { .compatible = "elan,ekth3500" }, + { .compatible = "elan,ekth3500", .data = (void *)EKTH3500 }, + { .compatible = "elan,ektf3624", .data = (void *)EKTF3624 }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, elants_of_match); From patchwork Sat Sep 19 21:41:22 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= X-Patchwork-Id: 293942 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 10F5FC43465 for ; Sat, 19 Sep 2020 21:49:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD7702311D for ; Sat, 19 Sep 2020 21:49:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="d7FHNT4Y" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726598AbgISVtv (ORCPT ); Sat, 19 Sep 2020 17:49:51 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:5198 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726729AbgISVtv (ORCPT ); Sat, 19 Sep 2020 17:49:51 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4Bv4034TfFzht; Sat, 19 Sep 2020 23:41:23 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1600551683; bh=nLwavT2NA5+jIA2IuW6zD/l5oswZ/ngNahOWEbWGrOQ=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=d7FHNT4YLCDqqarkSYbb/7qXMEzkll8472+0ydkYbLHj6WfiFnQAR/OYB/9UFK+RE VBLLmXx0QgD3r2qXNztQD2bb/T1MtFZ5wOZePbSUmVDAqu1tgPF7T7b4rL8wQIVgQq fTRXh2BP1pH8xSuqyvFdorPnYUM1a7evQEyaK5KoC+Z9rhyVhVX0sb42vJRp6bHcNI mF+v1j9ky44r5Pi6WJBHWI/FtZKRN5uN7BjTKDzcoVtRO8uWPlvK+jU81V4HrsAAuY qJ3csQNfVhJLwoIAeZM6EsxAwPHIyoozYzxiB/mPzMgY79KImK+KNygie7m7z1JWU9 Q9b1RFwIuM4gg== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Sat, 19 Sep 2020 23:41:22 +0200 Message-Id: <38cd8d9682e1cc1daae9fb69785f8d2ead08f1ba.1600551334.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v7 4/4] input: elants: support 0x66 reply opcode for reporting touches MIME-Version: 1.0 To: Dmitry Torokhov , Dmitry Osipenko , Henrik Rydberg , James Chen , Johnny Chuang , Scott Liu , "Gustavo A. R. Silva" , Harry Cutts , Peter Hutterer Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org From: Dmitry Osipenko eKTF3624 touchscreen firmware uses two variants of the reply opcodes for reporting touch events: one is 0x63 (used by older firmware) and other is 0x66 (used by newer firmware). The 0x66 variant is equal to 0x63 of eKTH3500, while 0x63 needs small adjustment of the touch pressure value. Nexus 7 tablet device has eKTF3624 touchscreen and it uses 0x66 opcode for reporting touch events, let's support it now. Other devices, eg. ASUS TF300T, use 0x63. Note: CMD_HEADER_REK is used for replying to calibration requests, it has the same 0x66 opcode number which eKTF3624 uses for reporting touches. The calibration replies are handled separately from the the rest of the commands in the driver by entering into ELAN_WAIT_RECALIBRATION state and thus this change shouldn't change the old behavior. Signed-off-by: Dmitry Osipenko Tested-by: Michał Mirosław Signed-off-by: Michał Mirosław --- drivers/input/touchscreen/elants_i2c.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index c24d8cdc4251..1cbda6f20d07 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -61,6 +61,15 @@ #define QUEUE_HEADER_NORMAL 0X63 #define QUEUE_HEADER_WAIT 0x64 +/* + * Depending on firmware version, eKTF3624 touchscreens may utilize one of + * these opcodes for the touch events: 0x63 and 0x66. The 0x63 is used by + * older firmware version and differs from 0x66 such that touch pressure + * value needs to be adjusted. The 0x66 opcode of newer firmware is equal + * to 0x63 of eKTH3500. + */ +#define QUEUE_HEADER_NORMAL2 0x66 + /* Command header definition */ #define CMD_HEADER_WRITE 0x54 #define CMD_HEADER_READ 0x53 @@ -1052,7 +1061,6 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev) switch (ts->buf[FW_HDR_TYPE]) { case CMD_HEADER_HELLO: case CMD_HEADER_RESP: - case CMD_HEADER_REK: break; case QUEUE_HEADER_WAIT: @@ -1072,6 +1080,7 @@ static irqreturn_t elants_i2c_irq(int irq, void *_dev) break; case QUEUE_HEADER_NORMAL: + case QUEUE_HEADER_NORMAL2: report_count = ts->buf[FW_HDR_COUNT]; if (report_count == 0 || report_count > 3) { dev_err(&client->dev,