From patchwork Thu Nov 10 17:19:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Knecht X-Patchwork-Id: 623437 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03CEDC4321E for ; Thu, 10 Nov 2022 17:20:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231396AbiKJRUa (ORCPT ); Thu, 10 Nov 2022 12:20:30 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45102 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231341AbiKJRU2 (ORCPT ); Thu, 10 Nov 2022 12:20:28 -0500 Received: from msg-2.mailo.com (msg-2.mailo.com [213.182.54.12]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 652F41E8; Thu, 10 Nov 2022 09:20:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mailoo.org; s=mailo; t=1668100815; bh=l55fHkNn8Ed89kT7xAtVgMNLiNafpAVdJsmDgQTK+/8=; h=X-EA-Auth:From:To:Cc:Subject:Date:Message-Id:X-Mailer:In-Reply-To: References:MIME-Version:Content-Transfer-Encoding; b=LioxLxCUBHBZrWWy/b/IpoPERHBTwK7sC2b6qnEnhYps3GQttJ+gMcftoct6yhWXu PHwnyZbnHv9NFR/BS+bE5FhahtHzuAo7ISzakLYTe5Cf2Qk7PK+K7al6mMeSK13sEu s/EEW3p0Q1fIMqyc9YNMG8QxRjCCr5kIR9H+Z6AM= Received: by b-6.in.mailobj.net [192.168.90.16] with ESMTP via proxy.mailoo.org [213.182.55.207] Thu, 10 Nov 2022 18:20:15 +0100 (CET) X-EA-Auth: znNgnLi0uPOB+XwA8c325fqpkSkngoH5vtNXHzfQ94/jCIFwQcinGDBIxE0xn36YRvY3SFMZiYwk6pr6EnFUxvgy6J8TN3WiZrKvswbxTXU= From: Vincent Knecht To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Vincent Knecht , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: w.david0@protonmail.com, stephan@gerhold.net, phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Rob Herring Subject: [PATCH v4 2/5] dt-bindings: input: touchscreen: msg2638: Document msg2138 support Date: Thu, 10 Nov 2022 18:19:45 +0100 Message-Id: <20221110171952.34207-3-vincent.knecht@mailoo.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221110171952.34207-1-vincent.knecht@mailoo.org> References: <20221110171952.34207-1-vincent.knecht@mailoo.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Document msg2138 support by adding mstar,msg2138 compatible. Acked-by: Rob Herring Signed-off-by: Vincent Knecht --- .../devicetree/bindings/input/touchscreen/mstar,msg2638.yaml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml b/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml index 3a42c23faf6f..2fb7e01bb65a 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml +++ b/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml @@ -14,7 +14,9 @@ allOf: properties: compatible: - const: mstar,msg2638 + enum: + - mstar,msg2138 + - mstar,msg2638 reg: const: 0x26 From patchwork Thu Nov 10 17:19:46 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Knecht X-Patchwork-Id: 623436 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9168DC43219 for ; Thu, 10 Nov 2022 17:20:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230184AbiKJRUb (ORCPT ); Thu, 10 Nov 2022 12:20:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231447AbiKJRUa (ORCPT ); Thu, 10 Nov 2022 12:20:30 -0500 Received: from msg-4.mailo.com (msg-4.mailo.com [213.182.54.15]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C208A4; Thu, 10 Nov 2022 09:20:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mailoo.org; s=mailo; t=1668100819; bh=BfMnzoCXhU0WRxUZKEPynpBofOMASUhpqpPL7tHyjf8=; h=X-EA-Auth:From:To:Cc:Subject:Date:Message-Id:X-Mailer:In-Reply-To: References:MIME-Version:Content-Transfer-Encoding; b=gUmm+U8u9/xOjYhulH+CKNCe7G5zeSobyUD6cytzrQxhiXxoaNTrbnlG32W9rWBwe RBPQ7HSU5lAugLiGZvxkeKyHEcj2voNMJqtuOXDWa/OltknKFMEMsQgbgOE4EH9Tmu Ft0c8CGcbq5XKl2vOHcnZk85WRSxKgACLCPHf5/A= Received: by b-6.in.mailobj.net [192.168.90.16] with ESMTP via proxy.mailoo.org [213.182.55.207] Thu, 10 Nov 2022 18:20:19 +0100 (CET) X-EA-Auth: CEwPyxhJgWkM9+ozqN5+L4Grm/OGTtQepuqi1ltfBBjPhYf2gumhRWVN7pPBc9WZBoZcH/6M7ObfE6KEV3wKJmaV4FL8q8T4X3PxZdX+6YA= From: Vincent Knecht To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Vincent Knecht , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: w.david0@protonmail.com, stephan@gerhold.net, phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht Subject: [PATCH v4 3/5] Input: msg2638 - Add support for msg2138 Date: Thu, 10 Nov 2022 18:19:46 +0100 Message-Id: <20221110171952.34207-4-vincent.knecht@mailoo.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221110171952.34207-1-vincent.knecht@mailoo.org> References: <20221110171952.34207-1-vincent.knecht@mailoo.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org msg2138 only supports 2 fingers presses, and needs different processing since second finger press is encoded as a delta position wrt. first one and the packet/touch_event structs are not the same as msg2638. Add support for it by implementing distinct structs and irq handler. Signed-off-by: Vincent Knecht --- drivers/input/touchscreen/msg2638.c | 93 +++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) diff --git a/drivers/input/touchscreen/msg2638.c b/drivers/input/touchscreen/msg2638.c index 222adedf78bf..73e1b4d550fb 100644 --- a/drivers/input/touchscreen/msg2638.c +++ b/drivers/input/touchscreen/msg2638.c @@ -26,6 +26,7 @@ #define MODE_DATA_RAW 0x5A +#define MSG2138_MAX_FINGERS 2 #define MSG2638_MAX_FINGERS 5 #define CHIP_ON_DELAY_MS 15 @@ -38,6 +39,18 @@ struct msg_chip_data { unsigned int max_fingers; }; +struct msg2138_packet { + u8 xy_hi; /* higher bits of x and y coordinates */ + u8 x_low; + u8 y_low; +}; + +struct msg2138_touch_event { + u8 magic; + struct msg2138_packet pkt[MSG2138_MAX_FINGERS]; + u8 checksum; +}; + struct msg2638_packet { u8 xy_hi; /* higher bits of x and y coordinates */ u8 x_low; @@ -72,6 +85,80 @@ static u8 msg2638_checksum(u8 *data, u32 length) return (u8)((-sum) & 0xFF); } +static irqreturn_t msg2138_ts_irq_handler(int irq, void *msg2638_handler) +{ + struct msg2638_ts_data *msg2638 = msg2638_handler; + struct i2c_client *client = msg2638->client; + struct input_dev *input = msg2638->input_dev; + struct msg2138_touch_event touch_event; + u32 len = sizeof(touch_event); + struct i2c_msg msg[] = { + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = sizeof(touch_event), + .buf = (u8 *)&touch_event, + }, + }; + struct msg2138_packet *p0, *p1; + u16 x, y, delta_x, delta_y; + int ret; + + ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); + if (ret != ARRAY_SIZE(msg)) { + dev_err(&client->dev, + "Failed I2C transfer in irq handler: %d\n", + ret < 0 ? ret : -EIO); + goto out; + } + + if (msg2638_checksum((u8 *)&touch_event, len - 1) != + touch_event.checksum) { + dev_err(&client->dev, "Failed checksum!\n"); + goto out; + } + + p0 = &touch_event.pkt[0]; + p1 = &touch_event.pkt[1]; + + /* Ignore non-pressed finger data */ + if (p0->xy_hi == 0xFF && p0->x_low == 0xFF && p0->y_low == 0xFF) + goto report; + + x = (((p0->xy_hi & 0xF0) << 4) | p0->x_low); + y = (((p0->xy_hi & 0x0F) << 8) | p0->y_low); + + input_mt_slot(input, 0); + input_mt_report_slot_state(input, MT_TOOL_FINGER, true); + touchscreen_report_pos(input, &msg2638->prop, x, y, true); + + /* Ignore non-pressed finger data */ + if (p1->xy_hi == 0xFF && p1->x_low == 0xFF && p1->y_low == 0xFF) + goto report; + + /* Second finger is reported as a delta position */ + delta_x = (((p1->xy_hi & 0xF0) << 4) | p1->x_low); + delta_y = (((p1->xy_hi & 0x0F) << 8) | p1->y_low); + + /* Ignore second finger if both deltas equal 0 */ + if (delta_x == 0 && delta_y == 0) + goto report; + + x += delta_x; + y += delta_y; + + input_mt_slot(input, 1); + input_mt_report_slot_state(input, MT_TOOL_FINGER, true); + touchscreen_report_pos(input, &msg2638->prop, x, y, true); + +report: + input_mt_sync_frame(msg2638->input_dev); + input_sync(msg2638->input_dev); + +out: + return IRQ_HANDLED; +} + static irqreturn_t msg2638_ts_irq_handler(int irq, void *msg2638_handler) { struct msg2638_ts_data *msg2638 = msg2638_handler; @@ -331,12 +418,18 @@ static int __maybe_unused msg2638_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(msg2638_pm_ops, msg2638_suspend, msg2638_resume); +static const struct msg_chip_data msg2138_data = { + .irq_handler = msg2138_ts_irq_handler, + .max_fingers = MSG2138_MAX_FINGERS, +}; + static const struct msg_chip_data msg2638_data = { .irq_handler = msg2638_ts_irq_handler, .max_fingers = MSG2638_MAX_FINGERS, }; static const struct of_device_id msg2638_of_match[] = { + { .compatible = "mstar,msg2138", .data = &msg2138_data }, { .compatible = "mstar,msg2638", .data = &msg2638_data }, { } }; From patchwork Thu Nov 10 17:19:48 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Knecht X-Patchwork-Id: 623435 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7A030C4332F for ; Thu, 10 Nov 2022 17:20:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231521AbiKJRUx (ORCPT ); Thu, 10 Nov 2022 12:20:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45402 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231702AbiKJRUt (ORCPT ); Thu, 10 Nov 2022 12:20:49 -0500 Received: from msg-2.mailo.com (msg-2.mailo.com [213.182.54.12]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EABFCF594; Thu, 10 Nov 2022 09:20:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mailoo.org; s=mailo; t=1668100832; bh=Kf0fNlGsDsRSuOjAAsDcc4gChjhmw9Z/lyP6jAa/dFA=; h=X-EA-Auth:From:To:Cc:Subject:Date:Message-Id:X-Mailer:In-Reply-To: References:MIME-Version:Content-Transfer-Encoding; b=fajgFlZhaaiXbLn7jT1pv3w2mXklLWRyqmN/a7uwL6sTKPFR1nUih3YozHVx7gxc7 CePbAwQ6ITgrxFCG/mc1CSOLPgu3k4X1o+eJDA1s3RYvsQvaeLxbwY2JhQL+EWxTI1 T2JUlGfuHLFswsFU+MsQG6buMnfzLAD6yQ3tKbIA= Received: by b-3.in.mailobj.net [192.168.90.13] with ESMTP via proxy.mailoo.org [213.182.55.207] Thu, 10 Nov 2022 18:20:31 +0100 (CET) X-EA-Auth: lcPdtQDwbd5WixXkQaMO8eww4IHjNcYBnAZRusvFKb7KqcKeV38ldXy9DypC7TYRab1ocfB4+uOgl1VWkSVrXkhWvjNPaZhZMTp/gIubwGY= From: Vincent Knecht To: Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Vincent Knecht , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: w.david0@protonmail.com, stephan@gerhold.net, phone-devel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht Subject: [PATCH v4 5/5] Input: msg2638 - Add support for msg2138 key events Date: Thu, 10 Nov 2022 18:19:48 +0100 Message-Id: <20221110171952.34207-6-vincent.knecht@mailoo.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221110171952.34207-1-vincent.knecht@mailoo.org> References: <20221110171952.34207-1-vincent.knecht@mailoo.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Some devices with msg2138 have back/menu/home keys. Add support for them. Signed-off-by: Vincent Knecht --- drivers/input/touchscreen/msg2638.c | 53 +++++++++++++++++++++++++---- 1 file changed, 47 insertions(+), 6 deletions(-) diff --git a/drivers/input/touchscreen/msg2638.c b/drivers/input/touchscreen/msg2638.c index 73e1b4d550fb..36069b30ab9b 100644 --- a/drivers/input/touchscreen/msg2638.c +++ b/drivers/input/touchscreen/msg2638.c @@ -29,6 +29,8 @@ #define MSG2138_MAX_FINGERS 2 #define MSG2638_MAX_FINGERS 5 +#define MAX_BUTTONS 4 + #define CHIP_ON_DELAY_MS 15 #define FIRMWARE_ON_DELAY_MS 50 #define RESET_DELAY_MIN_US 10000 @@ -72,6 +74,8 @@ struct msg2638_ts_data { struct regulator_bulk_data supplies[2]; struct gpio_desc *reset_gpiod; int max_fingers; + u32 keycodes[MAX_BUTTONS]; + int num_keycodes; }; static u8 msg2638_checksum(u8 *data, u32 length) @@ -85,6 +89,19 @@ static u8 msg2638_checksum(u8 *data, u32 length) return (u8)((-sum) & 0xFF); } +static void msg2138_report_keys(struct msg2638_ts_data *msg2638, u8 keys) +{ + int i; + + /* keys can be 0x00 or 0xff when all keys have been released */ + if (keys == 0xff) + keys = 0; + + for (i = 0; i < msg2638->num_keycodes; ++i) + input_report_key(msg2638->input_dev, msg2638->keycodes[i], + !!(keys & BIT(i))); +} + static irqreturn_t msg2138_ts_irq_handler(int irq, void *msg2638_handler) { struct msg2638_ts_data *msg2638 = msg2638_handler; @@ -121,9 +138,12 @@ static irqreturn_t msg2138_ts_irq_handler(int irq, void *msg2638_handler) p0 = &touch_event.pkt[0]; p1 = &touch_event.pkt[1]; - /* Ignore non-pressed finger data */ - if (p0->xy_hi == 0xFF && p0->x_low == 0xFF && p0->y_low == 0xFF) + /* Ignore non-pressed finger data, but check for key code */ + if (p0->xy_hi == 0xFF && p0->x_low == 0xFF && p0->y_low == 0xFF) { + if (p1->xy_hi == 0xFF && p1->y_low == 0xFF) + msg2138_report_keys(msg2638, p1->x_low); goto report; + } x = (((p0->xy_hi & 0xF0) << 4) | p0->x_low); y = (((p0->xy_hi & 0x0F) << 8) | p0->y_low); @@ -283,6 +303,7 @@ static int msg2638_init_input_dev(struct msg2638_ts_data *msg2638) struct device *dev = &msg2638->client->dev; struct input_dev *input_dev; int error; + int i; input_dev = devm_input_allocate_device(dev); if (!input_dev) { @@ -299,6 +320,14 @@ static int msg2638_init_input_dev(struct msg2638_ts_data *msg2638) input_dev->open = msg2638_input_open; input_dev->close = msg2638_input_close; + if (msg2638->num_keycodes) { + input_dev->keycode = msg2638->keycodes; + input_dev->keycodemax = msg2638->num_keycodes; + input_dev->keycodesize = sizeof(msg2638->keycodes[0]); + for (i = 0; i < msg2638->num_keycodes; i++) + input_set_capability(input_dev, EV_KEY, msg2638->keycodes[i]); + } + input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X); input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y); @@ -367,10 +396,16 @@ static int msg2638_ts_probe(struct i2c_client *client) return error; } - error = msg2638_init_input_dev(msg2638); - if (error) { - dev_err(dev, "Failed to initialize input device: %d\n", error); - return error; + msg2638->num_keycodes = + of_property_read_variable_u32_array(dev->of_node, "linux,keycodes", + msg2638->keycodes, 0, + ARRAY_SIZE(msg2638->keycodes)); + if (msg2638->num_keycodes == -EINVAL) { + msg2638->num_keycodes = 0; + } else if (msg2638->num_keycodes < 0) { + dev_err(dev, "Unable to parse linux,keycodes property: %d\n", + msg2638->num_keycodes); + return msg2638->num_keycodes; } error = devm_request_threaded_irq(dev, client->irq, @@ -382,6 +417,12 @@ static int msg2638_ts_probe(struct i2c_client *client) return error; } + error = msg2638_init_input_dev(msg2638); + if (error) { + dev_err(dev, "Failed to initialize input device: %d\n", error); + return error; + } + return 0; }