From patchwork Sat Oct 24 12:46:40 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: 11854831 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5E3A815E6 for ; Sat, 24 Oct 2020 12:47:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4635A2226B for ; Sat, 24 Oct 2020 12:47:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="LAv9rMRZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761535AbgJXMq6 (ORCPT ); Sat, 24 Oct 2020 08:46:58 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:29500 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761485AbgJXMqm (ORCPT ); Sat, 24 Oct 2020 08:46:42 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4CJLSw2kmYzFY; Sat, 24 Oct 2020 14:46:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1603543600; bh=3doK0FUutvkvWAsR9+JjynwPIbyNyVd+O7Di1WbQwyM=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=LAv9rMRZezTUF3S7jbYtko9VUCFjEoDToryCItvKM4cNcdq+/5Dbdo57pIOU3eAaE yII1VeMcpxL+mxrQM9NG5Ml2hAi3y8kfW8tIt4uiklk4f9u3Xg37wV1R7lzDx1g2Up YL4JwpACqeEM4A4lJ0plFRN28efLXHG1/2vzfNmjfjR36TnB4F41iB3YuU6xRzTzQC b9i+jD4v4dlPSwopEkIaiy51SZJ3N1JO6qzJCwkyAjCvI1eYnXjmHq7tA4tqv1Xon5 IQVNB7gzeeXCNCyZqHrRZUJ3BEZ0c/VsR3sQ9eklBTzfTnCW4E8SoYmQGi7MpVIDh8 3mYyCmZPN9fyg== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Sat, 24 Oct 2020 14:46:40 +0200 Message-Id: <36596e65f85d3ee3ac5f35b108ab10dd462de097.1603543323.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v8 1/4] input: elants: document some registers and values MIME-Version: 1.0 To: Dmitry Osipenko , Dmitry Torokhov , "Gustavo A. R. Silva" , Johnny Chuang , 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 Oct 24 12:46:40 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: 11854829 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C614792C for ; Sat, 24 Oct 2020 12:46:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AF3D32225E for ; Sat, 24 Oct 2020 12:46:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="XcQXiuhR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761501AbgJXMqo (ORCPT ); Sat, 24 Oct 2020 08:46:44 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:3629 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761488AbgJXMqn (ORCPT ); Sat, 24 Oct 2020 08:46:43 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4CJLSw5mkszHF; Sat, 24 Oct 2020 14:46:40 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1603543600; bh=SuKYXjpw/qBWpC6YXxydUVb5w6cLmNOjpgdbQogN4GI=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=XcQXiuhRQdtjbmtol0cQOZa63dskDV4BwhIsvweY36ksnDWHG2mUrm27hbJN/OYZa /EsC+OGpfjMm2UqZeglVl6WLl9K1F8yF4HQ34CJuxXcS/lRfEhNkZKNYaDxifA6/+h ykee0OMw1mm99loHDkTj8a8mApbQZ1OxBaJvfmkKA8TWSH4UMUD4LLcumrcT1o069G oJ0ImL9+XpeJf4BhfiRWqJeF3qF7Cq8wAGEw0EfUWOey6QewT2Wsdqtez27HZbGyna fh6d8kvCmTM0eAXYkSBwMOjqiWSp51s+vCnNyALVRCaogg8PhWulUToQop+Yuf4CtG O5YdwLCgW1FkQ== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Sat, 24 Oct 2020 14:46:40 +0200 Message-Id: <6caac5757b8afdb84f0d621844ea2c5b6deb885f.1603543323.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v8 2/4] input: elants: support old touch report format MIME-Version: 1.0 To: Dmitry Osipenko , Dmitry Torokhov , "Gustavo A. R. Silva" , Johnny Chuang , 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 Oct 24 12:46:40 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: 11854827 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F0C9616BC for ; Sat, 24 Oct 2020 12:46:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D7F252226B for ; Sat, 24 Oct 2020 12:46:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="eN8YPOY3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761504AbgJXMqo (ORCPT ); Sat, 24 Oct 2020 08:46:44 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:41475 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761489AbgJXMqo (ORCPT ); Sat, 24 Oct 2020 08:46:44 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4CJLSx0kndzHb; Sat, 24 Oct 2020 14:46:41 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1603543601; bh=sjHesEuhUQBPTBR5PKdh6Su6/OO5b6xTTe6dLO4s9HI=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=eN8YPOY3496Rb1kFe1pTB4DrjLJK5FoUQSf2qaAhhcMDI+rfM0NGVuvmmYC+wyMK6 YT6Zo1otObmxBFMROxlmh4ZcNp2WPiCGS1x5DpPjR8bK4YJ+JWGgEAiIxKflIjefBW VWvORFt/BwMGmBSp2CJGcZfYnYOCQ6CkPTD6FzqJrk9VZDfBCF4H5Txxg9qnBfVow7 /STA5ERBc8CMobnMtbxpy2A1eH0/IRY+E4yICrdCNorHCkMGWV7WeXtuvGAGINzROq pQvO0TtrF0WTcmmkOzOiPhXKgk3Uq65GhDa4MUiPow+vbdscdLnNd0OkRhR3gf09cS SW9YkK+7Jaq3Q== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Sat, 24 Oct 2020 14:46:40 +0200 Message-Id: <211f8a04e260773a5cc723eb3f295d8640436dd2.1603543323.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v8 3/4] input: elants: read touchscreen size for EKTF3624 MIME-Version: 1.0 To: Dmitry Osipenko , Dmitry Torokhov , "Gustavo A. R. Silva" , Johnny Chuang , 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 Oct 24 12:46:41 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: 11854825 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8D1A992C for ; Sat, 24 Oct 2020 12:46:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 712C42076D for ; Sat, 24 Oct 2020 12:46:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="mN3JKBQg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761506AbgJXMqp (ORCPT ); Sat, 24 Oct 2020 08:46:45 -0400 Received: from rere.qmqm.pl ([91.227.64.183]:27411 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761491AbgJXMqn (ORCPT ); Sat, 24 Oct 2020 08:46:43 -0400 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4CJLSx4XBXzJf; Sat, 24 Oct 2020 14:46:41 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1603543601; bh=nLwavT2NA5+jIA2IuW6zD/l5oswZ/ngNahOWEbWGrOQ=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=mN3JKBQgwYkkw7RtAVytbbnLQouuVsg8RyBQ4cV1GfmDB+hY697utmlJNAZaNBQK1 lMSea0EnnGRcBBDMNzURVB5kw6v9Oa7KQD56S6B2AFU9CjvTUuLvDakNU+gcom0436 4FiLuFwmh0e9L7WZB+ZtFyg3e354E/bUTWWyz3/ctcYpIPyxd3J4yuKX5uVqGWDb45 AkQmYpu1ZzIP9yK5TCzJkBQ3DRbLTyQ+/hI5xgXbUy5yYvHVSMJzpFWIxvcsqvDEKd aLvk6q8UK0z3Pg/Jt3K0K3eQInGfgynvsao00D1PGvS6oU+tAKOOoNd68dcDXfhmoV Ti9F/euk6CFbQ== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Sat, 24 Oct 2020 14:46:41 +0200 Message-Id: <94eee607817c622c4fcb691a952ce8effe2456f8.1603543323.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH v8 4/4] input: elants: support 0x66 reply opcode for reporting touches MIME-Version: 1.0 To: Dmitry Torokhov , Dmitry Osipenko , Johnny Chuang , Peter Hutterer , "Gustavo A. R. Silva" 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,