From patchwork Wed Jan 5 06:03:19 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 530259 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 BB7B7C433F5 for ; Wed, 5 Jan 2022 06:04:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237640AbiAEGEC (ORCPT ); Wed, 5 Jan 2022 01:04:02 -0500 Received: from box.trvn.ru ([194.87.146.52]:37417 "EHLO box.trvn.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237626AbiAEGEB (ORCPT ); Wed, 5 Jan 2022 01:04:01 -0500 Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 47BDC42068; Wed, 5 Jan 2022 11:03:56 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1641362637; bh=Onf6EQi/egtn2QPY2nKoZCNdgHfMJXA66JIUj5ords0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=N26GmECvHEozt7C4NPInQHgsbNz3/HXYzDF96CjDEHZs687wmjmanoOhMkct6KLP0 8leg7ZK/WCbhESnbHVLHe8Cr9jD2m9jfkmjqkRzoWVS/47oBt2oc5KJ0Y9+HwUZaC1 /oVDfvQS9tNS23pPPFU1fyz18eW21aoFfFhp1sq12NUYGqLKGHP+pPhp/pejn+FJmM BXBW4NudzUjMxeqkq2+HR+q28Xpq+8nhuSJ18Li5YhOVPemZJ9LgE97aDLX06EsanT lZhdjxIFmeoe8HbqML/e20VAzHEb+Wm+0u0PLVKa6KPtU0on0NdlJ+n12F1nMC+eyj yLkfY92eHwXkw== From: Nikita Travkin To: dmitry.torokhov@gmail.com Cc: robh+dt@kernel.org, Michael.Srba@seznam.cz, linus.walleij@linaro.org, broonie@kernel.org, luca@z3ntu.xyz, linux-input@vger.kernel.org, devicetree@vger.kernel.org, phone-devel@vger.kernel.org, linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Rob Herring , Nikita Travkin Subject: [PATCH v2 2/6] dt-bindings: input/ts/zinitix: Convert to YAML, fix and extend Date: Wed, 5 Jan 2022 11:03:19 +0500 Message-Id: <20220105060323.7928-3-nikita@trvn.ru> In-Reply-To: <20220105060323.7928-1-nikita@trvn.ru> References: <20220105060323.7928-1-nikita@trvn.ru> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org From: Linus Walleij This converts the Zinitix BT4xx and BT5xx touchscreen bindings to YAML, fix them up a bit and extends them. We list all the existing BT4xx and BT5xx components with compatible strings. These are all similar, use the same bindings and work in similar ways. We rename the supplies from the erroneous vdd/vddo to the actual supply names vcca/vdd as specified on the actual component. It is long established that supplies shall be named after the supply pin names of a component. The confusion probably stems from that in a certain product the rails to the component were named vdd/vddo. Drop some notes on how OS implementations should avoid confusion by first looking for vddo, and if that exists assume the legacy binding pair and otherwise use vcca/vdd. Add reset-gpios as sometimes manufacturers pulls a GPIO line to the reset line on the chip. Add optional touchscreen-fuzz-x and touchscreen-fuzz-y properties. Cc: Mark Brown Cc: Michael Srba Cc: phone-devel@vger.kernel.org Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring Signed-off-by: Linus Walleij [Fixed dt_schema_check] Signed-off-by: Nikita Travkin --- This patch was previously submitted here: https://lore.kernel.org/linux-input/20210625113435.2539282-1-linus.walleij@linaro.org/ Changes since the original patch: - Use enum for compatible list instead of oneOf + const --- .../input/touchscreen/zinitix,bt400.yaml | 115 ++++++++++++++++++ .../bindings/input/touchscreen/zinitix.txt | 40 ------ 2 files changed, 115 insertions(+), 40 deletions(-) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/zinitix,bt400.yaml delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/zinitix.txt diff --git a/Documentation/devicetree/bindings/input/touchscreen/zinitix,bt400.yaml b/Documentation/devicetree/bindings/input/touchscreen/zinitix,bt400.yaml new file mode 100644 index 000000000000..b4e5ba7c0b49 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/zinitix,bt400.yaml @@ -0,0 +1,115 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/zinitix,bt400.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Zinitix BT4xx and BT5xx series touchscreen controller bindings + +description: The Zinitix BT4xx and BT5xx series of touchscreen controllers + are Korea-produced touchscreens with embedded microcontrollers. The + BT4xx series was produced 2010-2013 and the BT5xx series 2013-2014. + +maintainers: + - Michael Srba + - Linus Walleij + +allOf: + - $ref: touchscreen.yaml# + +properties: + $nodename: + pattern: "^touchscreen(@.*)?$" + + compatible: + enum: + - zinitix,bt402 + - zinitix,bt403 + - zinitix,bt404 + - zinitix,bt412 + - zinitix,bt413 + - zinitix,bt431 + - zinitix,bt432 + - zinitix,bt531 + - zinitix,bt532 + - zinitix,bt538 + - zinitix,bt541 + - zinitix,bt548 + - zinitix,bt554 + - zinitix,at100 + + reg: + description: I2C address on the I2C bus + + clock-frequency: + description: I2C client clock frequency, defined for host when using + the device on the I2C bus + minimum: 0 + maximum: 400000 + + interrupts: + description: Interrupt to host + maxItems: 1 + + vcca-supply: + description: Analog power supply regulator on the VCCA pin + + vdd-supply: + description: Digital power supply regulator on the VDD pin. + In older device trees this can be the accidental name for the analog + supply on the VCCA pin, and in that case the deprecated vddo-supply is + used for the digital power supply. + + vddo-supply: + description: Deprecated name for the digital power supply, use vdd-supply + as this reflects the real name of the pin. If this supply is present, + the vdd-supply represents VCCA instead of VDD. Implementers should first + check for this property, and if it is present assume that the vdd-supply + represents the analog supply. + deprecated: true + + reset-gpios: + description: Reset line for the touchscreen, should be tagged + as GPIO_ACTIVE_LOW + + zinitix,mode: + description: Mode of reporting touch points. Some modes may not work + with a particular ts firmware for unknown reasons. Available modes are + 1 and 2. Mode 2 is the default and preferred. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [1, 2] + + touchscreen-size-x: true + touchscreen-size-y: true + touchscreen-fuzz-x: true + touchscreen-fuzz-y: true + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + - touchscreen-size-x + - touchscreen-size-y + +examples: + - | + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + touchscreen@20 { + compatible = "zinitix,bt541"; + reg = <0x20>; + interrupt-parent = <&gpio>; + interrupts = <13 IRQ_TYPE_EDGE_FALLING>; + vcca-supply = <®_vcca_tsp>; + vdd-supply = <®_vdd_tsp>; + touchscreen-size-x = <540>; + touchscreen-size-y = <960>; + zinitix,mode = <2>; + }; + }; diff --git a/Documentation/devicetree/bindings/input/touchscreen/zinitix.txt b/Documentation/devicetree/bindings/input/touchscreen/zinitix.txt deleted file mode 100644 index 446efb9f5f55..000000000000 --- a/Documentation/devicetree/bindings/input/touchscreen/zinitix.txt +++ /dev/null @@ -1,40 +0,0 @@ -Device tree bindings for Zinitx BT541 touchscreen controller - -Required properties: - - - compatible : Should be "zinitix,bt541" - - reg : I2C address of the chip. Should be 0x20 - - interrupts : Interrupt to which the chip is connected - -Optional properties: - - - vdd-supply : Analog power supply regulator on VCCA pin - - vddo-supply : Digital power supply regulator on VDD pin - - zinitix,mode : Mode of reporting touch points. Some modes may not work - with a particular ts firmware for unknown reasons. Available - modes are 1 and 2. Mode 2 is the default and preferred. - -The touchscreen-* properties are documented in touchscreen.txt in this -directory. - -Example: - - i2c@00000000 { - /* ... */ - - bt541@20 { - compatible = "zinitix,bt541"; - reg = <0x20>; - interrupt-parent = <&msmgpio>; - interrupts = <13 IRQ_TYPE_EDGE_FALLING>; - pinctrl-names = "default"; - pinctrl-0 = <&tsp_default>; - vdd-supply = <®_vdd_tsp>; - vddo-supply = <&pm8916_l6>; - touchscreen-size-x = <540>; - touchscreen-size-y = <960>; - zinitix,mode = <2>; - }; - - /* ... */ - }; From patchwork Wed Jan 5 06:03:21 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 530258 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 95C05C433EF for ; Wed, 5 Jan 2022 06:04:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237649AbiAEGEE (ORCPT ); Wed, 5 Jan 2022 01:04:04 -0500 Received: from box.trvn.ru ([194.87.146.52]:45923 "EHLO box.trvn.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237636AbiAEGEC (ORCPT ); Wed, 5 Jan 2022 01:04:02 -0500 Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id 946F84206B; Wed, 5 Jan 2022 11:04:00 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1641362641; bh=7qZ33c7U2ffXr+klqsI55vzDEMsVG+TTv1mDnFLdpF0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xjbLgN+GR0nr71wVMgAzLfLPuv0fFXKiRbZ2vynmWRPjKXm4heoU5aob/7NTjX2cB Cr3cxpPTh+WI19bjPSsF0Ottz0mvMVp6TBAXfvlueNMZSnS37O+RZSBMrmqEkG0G/i tBB0xKYoPvnWZ5h/WX34p8u/EcujbLNSelCfIg8VbLL+ysMx3VfddsA3GRxLMFHjal ys3gocG8OJXiK5d5ti37Syf7gpqLpioUCKUbCfHwunmKDhi7Hs843PyiZyfAAJ9AhH QfvnBuIXcWL1mBKM00RFJ70sLfTamVrDZfjaj2HjD1wU7ulWwgSqkgNVsRQQxzd/2u 66ZAk/GutYOFQ== From: Nikita Travkin To: dmitry.torokhov@gmail.com Cc: robh+dt@kernel.org, Michael.Srba@seznam.cz, linus.walleij@linaro.org, broonie@kernel.org, luca@z3ntu.xyz, linux-input@vger.kernel.org, devicetree@vger.kernel.org, phone-devel@vger.kernel.org, linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Nikita Travkin Subject: [PATCH v2 4/6] input: zinitix: Add compatible for bt532 Date: Wed, 5 Jan 2022 11:03:21 +0500 Message-Id: <20220105060323.7928-5-nikita@trvn.ru> In-Reply-To: <20220105060323.7928-1-nikita@trvn.ru> References: <20220105060323.7928-1-nikita@trvn.ru> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Zinitix BT532 is another touch controller that seem to implement the same interface as an already supported BT541. Add it to the driver. Reviewed-by: Linus Walleij Signed-off-by: Nikita Travkin --- drivers/input/touchscreen/zinitix.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/touchscreen/zinitix.c b/drivers/input/touchscreen/zinitix.c index e84e4c3b1b3a..7c82c4f5fa6b 100644 --- a/drivers/input/touchscreen/zinitix.c +++ b/drivers/input/touchscreen/zinitix.c @@ -571,6 +571,7 @@ static SIMPLE_DEV_PM_OPS(zinitix_pm_ops, zinitix_suspend, zinitix_resume); #ifdef CONFIG_OF static const struct of_device_id zinitix_of_match[] = { + { .compatible = "zinitix,bt532" }, { .compatible = "zinitix,bt541" }, { } }; From patchwork Wed Jan 5 06:03:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikita Travkin X-Patchwork-Id: 530257 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 16A0CC433F5 for ; Wed, 5 Jan 2022 06:04:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237664AbiAEGEG (ORCPT ); Wed, 5 Jan 2022 01:04:06 -0500 Received: from box.trvn.ru ([194.87.146.52]:55751 "EHLO box.trvn.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237646AbiAEGEE (ORCPT ); Wed, 5 Jan 2022 01:04:04 -0500 Received: from authenticated-user (box.trvn.ru [194.87.146.52]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by box.trvn.ru (Postfix) with ESMTPSA id D1E214207A; Wed, 5 Jan 2022 11:04:01 +0500 (+05) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=trvn.ru; s=mail; t=1641362642; bh=9zCO4y0WdmaObCtQHo6frc57v48/0fUW1a+wyWnbof8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=n/JI8RYKFh1SDIXs72MpT4899WpfohZ47EeNpMDpEPqlGNw4GdTBH7YOgiKEhEkHC DHLC8srTgnxkLCYJuQGQlY2NZgwSL4cuD3iHlRjhbbvUjYgjcy/pe96f9I3nZYFLwU is1Q57W+08o7cadbfaN3xbrVQWfbM6d7yt+7LluICBFj2CLN9FXTxe1ouC8bn1Wf9X hmhS6ONexvn0mCfqw4t9/BhyiWHNNy937N+cmy2UtthBtxDV7VXzWr65abQtZOZL0B 75+4rZxz3StoKcHzxrhbYuyofTeddihuR7j8VbGr+AcI6czHkzXJHr1Dmmei/08iMY 6577a3I7nvhGg== From: Nikita Travkin To: dmitry.torokhov@gmail.com Cc: robh+dt@kernel.org, Michael.Srba@seznam.cz, linus.walleij@linaro.org, broonie@kernel.org, luca@z3ntu.xyz, linux-input@vger.kernel.org, devicetree@vger.kernel.org, phone-devel@vger.kernel.org, linux-kernel@vger.kernel.org, ~postmarketos/upstreaming@lists.sr.ht, Nikita Travkin Subject: [PATCH v2 6/6] input: zinitix: Add touchkey support Date: Wed, 5 Jan 2022 11:03:23 +0500 Message-Id: <20220105060323.7928-7-nikita@trvn.ru> In-Reply-To: <20220105060323.7928-1-nikita@trvn.ru> References: <20220105060323.7928-1-nikita@trvn.ru> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Zinitix touch controllers can use some of the sense lines for virtual keys (like those found on many phones). Add support for those keys. Reviewed-by: Linus Walleij Signed-off-by: Nikita Travkin --- Changes in v2: - Add missing le16_to_cpu() --- drivers/input/touchscreen/zinitix.c | 61 +++++++++++++++++++++++++++-- 1 file changed, 58 insertions(+), 3 deletions(-) diff --git a/drivers/input/touchscreen/zinitix.c b/drivers/input/touchscreen/zinitix.c index 7c82c4f5fa6b..a1c2620507b4 100644 --- a/drivers/input/touchscreen/zinitix.c +++ b/drivers/input/touchscreen/zinitix.c @@ -119,6 +119,7 @@ #define DEFAULT_TOUCH_POINT_MODE 2 #define MAX_SUPPORTED_FINGER_NUM 5 +#define MAX_SUPPORTED_BUTTON_NUM 8 #define CHIP_ON_DELAY 15 // ms #define FIRMWARE_ON_DELAY 40 // ms @@ -146,6 +147,8 @@ struct bt541_ts_data { struct touchscreen_properties prop; struct regulator_bulk_data supplies[2]; u32 zinitix_mode; + u32 keycodes[MAX_SUPPORTED_BUTTON_NUM]; + int num_keycodes; }; static int zinitix_read_data(struct i2c_client *client, @@ -195,6 +198,7 @@ static int zinitix_init_touch(struct bt541_ts_data *bt541) struct i2c_client *client = bt541->client; int i; int error; + u16 int_flags = 0; error = zinitix_write_cmd(client, BT541_SWRESET_CMD); if (error) { @@ -225,6 +229,11 @@ static int zinitix_init_touch(struct bt541_ts_data *bt541) if (error) return error; + error = zinitix_write_u16(client, BT541_BUTTON_SUPPORTED_NUM, + bt541->num_keycodes); + if (error) + return error; + error = zinitix_write_u16(client, BT541_INITIAL_TOUCH_MODE, bt541->zinitix_mode); if (error) @@ -235,9 +244,12 @@ static int zinitix_init_touch(struct bt541_ts_data *bt541) if (error) return error; - error = zinitix_write_u16(client, BT541_INT_ENABLE_FLAG, - BIT_PT_CNT_CHANGE | BIT_DOWN | BIT_MOVE | - BIT_UP); + int_flags = BIT_PT_CNT_CHANGE | BIT_DOWN | BIT_MOVE | BIT_UP; + + if (bt541->num_keycodes) + int_flags |= BIT_ICON_EVENT; + + error = zinitix_write_u16(client, BT541_INT_ENABLE_FLAG, int_flags); if (error) return error; @@ -329,6 +341,15 @@ static void zinitix_report_finger(struct bt541_ts_data *bt541, int slot, input_report_abs(bt541->input_dev, ABS_MT_TOUCH_MAJOR, p->width); } +static void zinitix_report_keys(struct bt541_ts_data *bt541, u16 icon_events) +{ + int i; + + for (i = 0; i < bt541->num_keycodes; i++) + input_report_key(bt541->input_dev, + bt541->keycodes[i], !!(icon_events & BIT(i))); +} + static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler) { struct bt541_ts_data *bt541 = bt541_handler; @@ -336,6 +357,7 @@ static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler) struct touch_event touch_event; int error; int i; + __le16 icon_events = 0; memset(&touch_event, 0, sizeof(struct touch_event)); @@ -346,6 +368,17 @@ static irqreturn_t zinitix_ts_irq_handler(int irq, void *bt541_handler) goto out; } + if (touch_event.status & BIT_ICON_EVENT) { + error = zinitix_read_data(bt541->client, BT541_ICON_STATUS_REG, + &icon_events, sizeof(icon_events)); + if (error) { + dev_err(&client->dev, "Failed to read icon events\n"); + goto out; + } + + zinitix_report_keys(bt541, le16_to_cpu(icon_events)); + } + for (i = 0; i < MAX_SUPPORTED_FINGER_NUM; i++) if (touch_event.point_coord[i].sub_status & SUB_BIT_EXIST) zinitix_report_finger(bt541, i, @@ -427,6 +460,7 @@ static int zinitix_init_input_dev(struct bt541_ts_data *bt541) { struct input_dev *input_dev; int error; + int i; input_dev = devm_input_allocate_device(&bt541->client->dev); if (!input_dev) { @@ -444,6 +478,14 @@ static int zinitix_init_input_dev(struct bt541_ts_data *bt541) input_dev->open = zinitix_input_open; input_dev->close = zinitix_input_close; + if (bt541->num_keycodes) { + input_dev->keycode = bt541->keycodes; + input_dev->keycodemax = bt541->num_keycodes; + input_dev->keycodesize = sizeof(bt541->keycodes[0]); + for (i = 0; i < bt541->num_keycodes; i++) + input_set_capability(input_dev, EV_KEY, bt541->keycodes[i]); + } + input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X); input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y); input_set_abs_params(input_dev, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0); @@ -508,6 +550,19 @@ static int zinitix_ts_probe(struct i2c_client *client) return error; } + bt541->num_keycodes = of_property_read_variable_u32_array( + client->dev.of_node, "linux,keycodes", + bt541->keycodes, 0, + ARRAY_SIZE(bt541->keycodes)); + if (bt541->num_keycodes == -EINVAL) { + bt541->num_keycodes = 0; + } else if (bt541->num_keycodes < 0) { + dev_err(&client->dev, + "Unable to parse \"linux,keycodes\" property: %d\n", + bt541->num_keycodes); + return bt541->num_keycodes; + } + error = zinitix_init_input_dev(bt541); if (error) { dev_err(&client->dev,