From patchwork Sat Jun 1 15:30:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joel Selvaraj via B4 Relay X-Patchwork-Id: 801005 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C2E327451; Sat, 1 Jun 2024 15:30:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717255825; cv=none; b=RiCWYRItynXcYIc/oCH6w1AxX90Vc+udsVKkm6ZnNUk6RvDbgqzyC65HynxJAVD3u5EUFMM88RzDNHeroRNmdkqvgb7j/289j2bszDi6Vwy9wQgnwNGIVBDCxVa2kpzX+9iXKEExvMPhwBF/TYdy0V4ZxM+0hmitQNN5Ckkq//k= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717255825; c=relaxed/simple; bh=YKctU1BgLvYJv1exYVgkH2uz/IJdBVvmQn66+UB144M=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=OlE0saHZTIThK+uUQsK0Ft0QnZhvYdItm6yPQ6RG5OY8cSPELVlwXRDqXLtYrGbsKFoA1ci8SNFxMASwKfFbJi4lvH7tvvn/E1jOZs20DWLIOrmyWAicvW3n8nT1xdW9Ieemw0rZqnPWsxvUb5qxmjA/ABmWI+23R9dscYIIsdg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XoQVULtx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XoQVULtx" Received: by smtp.kernel.org (Postfix) with ESMTPS id 3BCAFC4AF0A; Sat, 1 Jun 2024 15:30:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717255825; bh=YKctU1BgLvYJv1exYVgkH2uz/IJdBVvmQn66+UB144M=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=XoQVULtxJiG3OwYnKxuBcukpsIbAqATRT9pLRbDHb9K37TVbJ1j5Vjz4nd2wrm4JQ hy6y3DLlOD64xqQn/GfMFucfLgmhI9hJ7U4SnWBpvmR9N0VJ1rzqo3DoW+rkoRwkMe kg6jXXU8U7wkduQLr3W/VhqEtLcv4mXYDRTibNGDkRS3kQyqzDKntJH4OGeZ3LZGdd uVUYYnruOQlYkOhm6/LoxqymP3tFMzPftevdgrjvmYwyvGVQHzafcGMRKTLNDcCxFA Hm1Tawm7z68jy+S0fyle2QhSL4RdsL2yMdInv//zGycHV1mRvfSyy4P7YwCT16p/o/ s99AUwc4NTb7Q== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 278E6C27C50; Sat, 1 Jun 2024 15:30:25 +0000 (UTC) From: Joel Selvaraj via B4 Relay Date: Sat, 01 Jun 2024 10:30:20 -0500 Subject: [PATCH v4 3/3] Input: novatek-nvt-ts: add support for NT36672A touchscreen Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240601-nvt-ts-devicetree-regulator-support-v4-3-e0c0174464c4@gmail.com> References: <20240601-nvt-ts-devicetree-regulator-support-v4-0-e0c0174464c4@gmail.com> In-Reply-To: <20240601-nvt-ts-devicetree-regulator-support-v4-0-e0c0174464c4@gmail.com> To: Hans de Goede , Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , =?utf-8?q?Ilpo_J=C3=A4rvinen?= Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, Joel Selvaraj X-Mailer: b4 0.14-dev X-Developer-Signature: v=1; a=ed25519-sha256; t=1717255824; l=5459; i=joelselvaraj.oss@gmail.com; s=20240420; h=from:subject:message-id; bh=MDx8U1TZt2iAR4PmfpxVEJF0XZQV+kEvz+8qGOsCbAM=; b=KSxgR0L7q1slNer4MRCnteah32lyqCN1Dui7W6UpcwpXX7+2NIBXKj4CtaIZ1i/VSUjTWnnax U9dUl1ZyhxbDWeL1mf3mhRFfdKMwLbfnEXvKQkbKsy8rEuSLAfE2H8l X-Developer-Key: i=joelselvaraj.oss@gmail.com; a=ed25519; pk=qT4gsuVtlPE0Dpr+tQA/Fumm7wzVP6qfeVaY+6pX04s= X-Endpoint-Received: by B4 Relay for joelselvaraj.oss@gmail.com/20240420 with auth_id=165 X-Original-From: Joel Selvaraj Reply-To: joelselvaraj.oss@gmail.com From: Joel Selvaraj Extend the novatek touchscreen driver to support NT36672A chip which is found in phones like qcom/sdm845-xiaomi-beryllium-tianma.dts. Added devicetree support for the driver and used i2c chip data to handle the variation in chip id and wake type. Also added vcc and iovcc regulators which are used to power the touchscreen hardware. Signed-off-by: Joel Selvaraj --- drivers/input/touchscreen/novatek-nvt-ts.c | 70 +++++++++++++++++++++++++++--- 1 file changed, 64 insertions(+), 6 deletions(-) diff --git a/drivers/input/touchscreen/novatek-nvt-ts.c b/drivers/input/touchscreen/novatek-nvt-ts.c index 9bee3a0c122fb..c24c33f609eb8 100644 --- a/drivers/input/touchscreen/novatek-nvt-ts.c +++ b/drivers/input/touchscreen/novatek-nvt-ts.c @@ -31,9 +31,6 @@ #define NVT_TS_PARAMS_CHIP_ID 0x0e #define NVT_TS_PARAMS_SIZE 0x0f -#define NVT_TS_SUPPORTED_WAKE_TYPE 0x05 -#define NVT_TS_SUPPORTED_CHIP_ID 0x05 - #define NVT_TS_MAX_TOUCHES 10 #define NVT_TS_MAX_SIZE 4096 @@ -51,11 +48,18 @@ static const int nvt_ts_irq_type[4] = { IRQF_TRIGGER_HIGH }; +struct nvt_ts_i2c_chip_data { + u8 wake_type; + u8 chip_id; +}; + struct nvt_ts_data { struct i2c_client *client; struct input_dev *input; struct gpio_desc *reset_gpio; + struct regulator_bulk_data regulators[2]; struct touchscreen_properties prop; + const struct nvt_ts_i2c_chip_data *chip; int max_touches; u8 buf[NVT_TS_TOUCH_SIZE * NVT_TS_MAX_TOUCHES]; }; @@ -142,6 +146,13 @@ static irqreturn_t nvt_ts_irq(int irq, void *dev_id) static int nvt_ts_start(struct input_dev *dev) { struct nvt_ts_data *data = input_get_drvdata(dev); + int error; + + error = regulator_bulk_enable(ARRAY_SIZE(data->regulators), data->regulators); + if (error) { + dev_err(&data->client->dev, "failed to enable regulators\n"); + return error; + } enable_irq(data->client->irq); gpiod_set_value_cansleep(data->reset_gpio, 0); @@ -155,6 +166,7 @@ static void nvt_ts_stop(struct input_dev *dev) disable_irq(data->client->irq); gpiod_set_value_cansleep(data->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators); } static int nvt_ts_suspend(struct device *dev) @@ -199,9 +211,31 @@ static int nvt_ts_probe(struct i2c_client *client) if (!data) return -ENOMEM; + data->chip = device_get_match_data(&client->dev); + if (!data->chip) + return -EINVAL; + data->client = client; i2c_set_clientdata(client, data); + /* + * VCC is the analog voltage supply + * IOVCC is the digital voltage supply + */ + data->regulators[0].supply = "vcc"; + data->regulators[1].supply = "iovcc"; + error = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->regulators), data->regulators); + if (error) { + dev_err(dev, "cannot get regulators: %d\n", error); + return error; + } + + error = regulator_bulk_enable(ARRAY_SIZE(data->regulators), data->regulators); + if (error) { + dev_err(dev, "failed to enable regulators: %d\n", error); + return error; + } + data->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW); error = PTR_ERR_OR_ZERO(data->reset_gpio); if (error) { @@ -216,6 +250,11 @@ static int nvt_ts_probe(struct i2c_client *client) gpiod_set_value_cansleep(data->reset_gpio, 1); /* Put back in reset */ if (error) return error; + error = regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators); + if (error) { + dev_err(dev, "failed to disable regulators: %d\n", error); + return error; + } width = get_unaligned_be16(&data->buf[NVT_TS_PARAMS_WIDTH]); height = get_unaligned_be16(&data->buf[NVT_TS_PARAMS_HEIGHT]); @@ -225,8 +264,8 @@ static int nvt_ts_probe(struct i2c_client *client) if (width > NVT_TS_MAX_SIZE || height >= NVT_TS_MAX_SIZE || data->max_touches > NVT_TS_MAX_TOUCHES || irq_type >= ARRAY_SIZE(nvt_ts_irq_type) || - data->buf[NVT_TS_PARAMS_WAKE_TYPE] != NVT_TS_SUPPORTED_WAKE_TYPE || - data->buf[NVT_TS_PARAMS_CHIP_ID] != NVT_TS_SUPPORTED_CHIP_ID) { + data->buf[NVT_TS_PARAMS_WAKE_TYPE] != data->chip->wake_type || + data->buf[NVT_TS_PARAMS_CHIP_ID] != data->chip->chip_id) { dev_err(dev, "Unsupported touchscreen parameters: %*ph\n", NVT_TS_PARAMS_SIZE, data->buf); return -EIO; @@ -277,8 +316,26 @@ static int nvt_ts_probe(struct i2c_client *client) return 0; } +static const struct nvt_ts_i2c_chip_data nvt_nt11205_ts_data = { + .wake_type = 0x05, + .chip_id = 0x05, +}; + +static const struct nvt_ts_i2c_chip_data nvt_nt36672a_ts_data = { + .wake_type = 0x01, + .chip_id = 0x08, +}; + +static const struct of_device_id nvt_ts_of_match[] = { + { .compatible = "novatek,nt11205-ts", .data = &nvt_nt11205_ts_data }, + { .compatible = "novatek,nt36672a-ts", .data = &nvt_nt36672a_ts_data }, + { } +}; +MODULE_DEVICE_TABLE(of, nvt_ts_of_match); + static const struct i2c_device_id nvt_ts_i2c_id[] = { - { "nt11205-ts" }, + { "nt11205-ts", (unsigned long) &nvt_nt11205_ts_data }, + { "nt36672a-ts", (unsigned long) &nvt_nt36672a_ts_data }, { } }; MODULE_DEVICE_TABLE(i2c, nvt_ts_i2c_id); @@ -287,6 +344,7 @@ static struct i2c_driver nvt_ts_driver = { .driver = { .name = "novatek-nvt-ts", .pm = pm_sleep_ptr(&nvt_ts_pm_ops), + .of_match_table = nvt_ts_of_match, }, .probe = nvt_ts_probe, .id_table = nvt_ts_i2c_id,