From patchwork Sat Dec 9 07:33:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Neil Armstrong X-Patchwork-Id: 752090 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="x8Phv2Y4" Received: from mail-wm1-x335.google.com (mail-wm1-x335.google.com [IPv6:2a00:1450:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EA3310E7 for ; Fri, 8 Dec 2023 23:33:50 -0800 (PST) Received: by mail-wm1-x335.google.com with SMTP id 5b1f17b1804b1-40b5155e154so33813805e9.3 for ; Fri, 08 Dec 2023 23:33:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1702107228; x=1702712028; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=tid5p5CbwnFew1OoFmZZ3rTS9lA993ke+t72lpp1p7Y=; b=x8Phv2Y4vFv2Kxv7LZjKV8Oy7CEA+l7Z4BgoduUkeL4wdbRXXFsYB+OWcu6ClIDt3s CHmliQxWjAZPkC/Ipgbw72JB0GztT0kPFC52cOgDlq8763SyvlxBPK5DH5hpwTztMOa8 FRGV2gQRRoKR/LK3R74My0WQhWCw15p9wWPk2pfaiobt7sAANrOxfycecthy9VWwtFos +QV59fDNLKgFRWpMiK9I/Lm1FgAq6Qee8ImHpaBDdmzWZMZ12pObgMR7XKkf1bIWIpok dqGN9/5/sjImDLmRZ8aQS/l6Rih7ELfh862GpNZ0qgFWWxGqADu2R0MAI5WavdcpVX8t EX2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702107228; x=1702712028; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tid5p5CbwnFew1OoFmZZ3rTS9lA993ke+t72lpp1p7Y=; b=fAE9Hsl1sm/ayjaOq6wErpSnWEP7gjD9koO3V27BC6NLxPsVMmRM7/zr6tJXUhiOEx 8UKJdzLm/8zL8KnrXCvDjnPciMr7U5kRconbemwj493EFQYVHD8vmb7+vSy4m732Dfvl zIu6rjNoFuzF0z3UQ/MDZqTULrfztKD/OG7qQSWrtpgT52Fcp+kk7vcX1igRJITx/+2s aGNnh7xySveK0ZWn+Tp0noFy9geXvmj1W0CKn8B5q2Vf9uD1Y8bSUQnUBT0lp4d+KhG/ Jeze56PK8HYZB7wlrQHb8pdB4PKVfe8ohlyO5EsVerhS2l7Yh95UN0Uo8cFZuKi2xIuN YkVg== X-Gm-Message-State: AOJu0YwR05sguJGi2rOaJ36laoacwWOB2I933VRlsJ+y5WUv0WeGvGpd 7Jfhow1oQ6UYOlWRX9ai2fqF6A== X-Google-Smtp-Source: AGHT+IFue+qASfoBYHun1WRmew8ZrF26zpf+rwVA7t80pjdqN2MqgZddY+oaZokH84ljREBtlIebMg== X-Received: by 2002:a1c:4b10:0:b0:40c:32d5:18df with SMTP id y16-20020a1c4b10000000b0040c32d518dfmr567495wma.182.1702107228626; Fri, 08 Dec 2023 23:33:48 -0800 (PST) Received: from arrakeen.starnux.net ([2a01:e0a:982:cbb0:8261:5fff:fe11:bdda]) by smtp.gmail.com with ESMTPSA id m3-20020a5d56c3000000b003334520e49bsm3577803wrw.53.2023.12.08.23.33.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Dec 2023 23:33:48 -0800 (PST) From: Neil Armstrong Date: Sat, 09 Dec 2023 08:33:41 +0100 Subject: [PATCH v12 3/4] Input: goodix-berlin - add I2C support for Goodix Berlin Touchscreen IC Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20231209-topic-goodix-berlin-upstream-initial-v12-3-eaffaeb53fb5@linaro.org> References: <20231209-topic-goodix-berlin-upstream-initial-v12-0-eaffaeb53fb5@linaro.org> In-Reply-To: <20231209-topic-goodix-berlin-upstream-initial-v12-0-eaffaeb53fb5@linaro.org> To: Dmitry Torokhov , linux-input@vger.kernel.org Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bastien Nocera , Hans de Goede , Henrik Rydberg , Jeff LaBundy , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Neil Armstrong X-Mailer: b4 0.12.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4539; i=neil.armstrong@linaro.org; h=from:subject:message-id; bh=/29OxaflwzQer1E/gOu8Bz3LG+5phtsz3jcz094am9k=; b=owEBbQKS/ZANAwAKAXfc29rIyEnRAcsmYgBldBhX0gFWxTQPAuo1ZjJMXSxnT7pKcEKtFCTUMpGP WgGGPyyJAjMEAAEKAB0WIQQ9U8YmyFYF/h30LIt33NvayMhJ0QUCZXQYVwAKCRB33NvayMhJ0fP3D/ 9uThZkuVlN0v9Ygy6xMkWoZQln0Dvh4MnXPieP/D9VdRlTPdGZgZ+ueWuTyeVy484ExYXej+ufoDfU q7LBXX+LDSB7Q7rCgK0rMPTo9oWmjaInBsQUhUco9mpXUkjuYmTRcw5V13urSaNB/T5aLjVnY7xRw+ K5hNI67Bl6EQzXe+L1hCGdkVg/T6j6U81pPaPCzDv2z6mISYxZ/1r3dK6p7WT/gja3dd3uQBuiB4zO bxSP+iHXcp7KtTwADjUnUl9LcW/C3iuKVUHP0XNT4Zy+GfKQqqA52v26D5ScJzQSBFzWFQ8t2SGgD/ xE9os2f7No81pj1VuBopm1mo3/5cBvfE8U5r0TCGmJjKVaumSZ8mUWyLSFde9rPdcsUYIFdAwkySJc RrGHAz4l44/hPR0KGLrJMHPxf3SpP807Tkic68sWA+WT7aTuGVY8/1m3if2IbG/FiIVTWQOwmVHpLC hXY6mRwjTAIQ/YU80hLkyFmGaEtctFbmvQo8XflDkdQyCL1oj0+SoOifOhCdnwkzN/DGRQcmHDMU0L UrRU3+cCNaH5+IUq4MY3pbt2EYOo9DbUdZgK7/S5goTuNiS4hlgTwpLLBDikAVKlWP/FzBsFHZGjMF hCcOf2MmI31q8fhooFkGQc3Gvfu3dGJgTRO5BHJ6tjrHSzexKkv1Eabrkg/A== X-Developer-Key: i=neil.armstrong@linaro.org; a=openpgp; fpr=89EC3D058446217450F22848169AB7B1A4CFF8AE Add initial support for the new Goodix "Berlin" touchscreen ICs over the I2C interface. This initial driver is derived from the Goodix goodix_ts_berlin available at [1] and [2] and only supports the GT9916 IC present on the Qualcomm SM8550 MTP & QRD touch panel. The current implementation only supports BerlinD, aka GT9916. [1] https://github.com/goodix/goodix_ts_berlin [2] https://git.codelinaro.org/clo/la/platform/vendor/opensource/touch-drivers Reviewed-by: Jeff LaBundy Signed-off-by: Neil Armstrong --- drivers/input/touchscreen/Kconfig | 14 +++++ drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/goodix_berlin_i2c.c | 74 +++++++++++++++++++++++++++ 3 files changed, 89 insertions(+) diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 950da599ae1a..cc7b88118158 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -419,6 +419,20 @@ config TOUCHSCREEN_GOODIX config TOUCHSCREEN_GOODIX_BERLIN_CORE tristate +config TOUCHSCREEN_GOODIX_BERLIN_I2C + tristate "Goodix Berlin I2C touchscreen" + depends on I2C + select REGMAP_I2C + select TOUCHSCREEN_GOODIX_BERLIN_CORE + help + Say Y here if you have a Goodix Berlin IC connected to + your system via I2C. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called goodix_berlin_i2c. + config TOUCHSCREEN_HIDEEP tristate "HiDeep Touch IC" depends on I2C diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 2e2f3e70cd2c..7ef677cf7a10 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -48,6 +48,7 @@ obj-$(CONFIG_TOUCHSCREEN_EXC3000) += exc3000.o obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o obj-$(CONFIG_TOUCHSCREEN_GOODIX) += goodix_ts.o obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_CORE) += goodix_berlin_core.o +obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_I2C) += goodix_berlin_i2c.o obj-$(CONFIG_TOUCHSCREEN_HIDEEP) += hideep.o obj-$(CONFIG_TOUCHSCREEN_HYNITRON_CSTXXX) += hynitron_cstxxx.o obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o diff --git a/drivers/input/touchscreen/goodix_berlin_i2c.c b/drivers/input/touchscreen/goodix_berlin_i2c.c new file mode 100644 index 000000000000..4d5bcc101569 --- /dev/null +++ b/drivers/input/touchscreen/goodix_berlin_i2c.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Goodix Berlin Touchscreen Driver + * + * Copyright (C) 2020 - 2021 Goodix, Inc. + * Copyright (C) 2023 Linaro Ltd. + * + * Based on goodix_ts_berlin driver. + */ +#include +#include +#include +#include + +#include "goodix_berlin.h" + +#define I2C_MAX_TRANSFER_SIZE 256 + +static const struct regmap_config goodix_berlin_i2c_regmap_conf = { + .reg_bits = 32, + .val_bits = 8, + .max_raw_read = I2C_MAX_TRANSFER_SIZE, + .max_raw_write = I2C_MAX_TRANSFER_SIZE, +}; + +/* vendor & product left unassigned here, should probably be updated from fw info */ +static const struct input_id goodix_berlin_i2c_input_id = { + .bustype = BUS_I2C, +}; + +static int goodix_berlin_i2c_probe(struct i2c_client *client) +{ + struct regmap *regmap; + int error; + + regmap = devm_regmap_init_i2c(client, &goodix_berlin_i2c_regmap_conf); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + error = goodix_berlin_probe(&client->dev, client->irq, + &goodix_berlin_i2c_input_id, regmap); + if (error) + return error; + + return 0; +} + +static const struct i2c_device_id goodix_berlin_i2c_id[] = { + { "gt9916", 0 }, + { } +}; + +MODULE_DEVICE_TABLE(i2c, goodix_berlin_i2c_id); + +static const struct of_device_id goodix_berlin_i2c_of_match[] = { + { .compatible = "goodix,gt9916", }, + { } +}; +MODULE_DEVICE_TABLE(of, goodix_berlin_i2c_of_match); + +static struct i2c_driver goodix_berlin_i2c_driver = { + .driver = { + .name = "goodix-berlin-i2c", + .of_match_table = goodix_berlin_i2c_of_match, + .pm = pm_sleep_ptr(&goodix_berlin_pm_ops), + }, + .probe = goodix_berlin_i2c_probe, + .id_table = goodix_berlin_i2c_id, +}; +module_i2c_driver(goodix_berlin_i2c_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Goodix Berlin I2C Touchscreen driver"); +MODULE_AUTHOR("Neil Armstrong ");