From patchwork Sun Jul 12 04:44:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Ruehl X-Patchwork-Id: 11658009 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 94ABA618 for ; Sun, 12 Jul 2020 04:44:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7ABE920809 for ; Sun, 12 Jul 2020 04:44:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728223AbgGLEoV (ORCPT ); Sun, 12 Jul 2020 00:44:21 -0400 Received: from server-x.ipv4.hkg02.ds.network ([27.111.83.178]:37136 "EHLO mail.gtsys.com.hk" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1728048AbgGLEoU (ORCPT ); Sun, 12 Jul 2020 00:44:20 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.gtsys.com.hk (Postfix) with ESMTP id 1C36A2013E75; Sun, 12 Jul 2020 12:44:17 +0800 (HKT) X-Virus-Scanned: Debian amavisd-new at gtsys.com.hk Received: from mail.gtsys.com.hk ([127.0.0.1]) by localhost (mail.gtsys.com.hk [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6WB6qsAVC-Dx; Sun, 12 Jul 2020 12:44:17 +0800 (HKT) Received: from s01.gtsys.com.hk (unknown [10.128.4.2]) by mail.gtsys.com.hk (Postfix) with ESMTP id 008462013F67; Sun, 12 Jul 2020 12:44:17 +0800 (HKT) Received: from armhf2.gtsys.com.hk (unknown [10.128.4.15]) by s01.gtsys.com.hk (Postfix) with ESMTP id F1BACC019F4; Sun, 12 Jul 2020 12:44:16 +0800 (HKT) Received: by armhf2.gtsys.com.hk (Postfix, from userid 1000) id EEE69202299; Sun, 12 Jul 2020 12:44:16 +0800 (HKT) From: Chris Ruehl To: Chris Ruehl Cc: Jack Lo , devicetree@vger.kernel.org, Guenter Roeck , Jean Delvare , linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 1/2] hwmon: shtc1: add support for device tree bindings Date: Sun, 12 Jul 2020 12:44:09 +0800 Message-Id: <20200712044411.23323-2-chris.ruehl@gtsys.com.hk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200712044411.23323-1-chris.ruehl@gtsys.com.hk> References: <20200712044411.23323-1-chris.ruehl@gtsys.com.hk> MIME-Version: 1.0 Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Add support for DTS bindings for the sensirion shtc1,shtw1 and shtc3. Signed-off-by: Chris Ruehl Reviewed-by: Guenter Roeck Tested-by: Chris Ruehl --- drivers/hwmon/shtc1.c | 25 ++++++++++++++++++++++--- 1 file changed, 22 insertions(+), 3 deletions(-) diff --git a/drivers/hwmon/shtc1.c b/drivers/hwmon/shtc1.c index a0078ccede03..7993a5ff8768 100644 --- a/drivers/hwmon/shtc1.c +++ b/drivers/hwmon/shtc1.c @@ -14,6 +14,7 @@ #include #include #include +#include /* commands (high precision mode) */ static const unsigned char shtc1_cmd_measure_blocking_hpm[] = { 0x7C, 0xA2 }; @@ -196,6 +197,7 @@ static int shtc1_probe(struct i2c_client *client, enum shtcx_chips chip = id->driver_data; struct i2c_adapter *adap = client->adapter; struct device *dev = &client->dev; + struct device_node *np = dev->of_node; if (!i2c_check_functionality(adap, I2C_FUNC_I2C)) { dev_err(dev, "plain i2c transactions not supported\n"); @@ -233,8 +235,14 @@ static int shtc1_probe(struct i2c_client *client, data->client = client; data->chip = chip; - if (client->dev.platform_data) - data->setup = *(struct shtc1_platform_data *)dev->platform_data; + if (np) { + data->setup.blocking_io = of_property_read_bool(np, "sensirion,blocking-io"); + data->setup.high_precision = !of_property_read_bool(np, "sensicon,low-precision"); + } else { + if (client->dev.platform_data) + data->setup = *(struct shtc1_platform_data *)dev->platform_data; + } + shtc1_select_command(data); mutex_init(&data->update_lock); @@ -257,8 +265,19 @@ static const struct i2c_device_id shtc1_id[] = { }; MODULE_DEVICE_TABLE(i2c, shtc1_id); +static const struct of_device_id shtc1_of_match[] = { + { .compatible = "sensirion,shtc1" }, + { .compatible = "sensirion,shtw1" }, + { .compatible = "sensirion,shtc3" }, + { } +}; +MODULE_DEVICE_TABLE(of, shtc1_of_match); + static struct i2c_driver shtc1_i2c_driver = { - .driver.name = "shtc1", + .driver = { + .name = "shtc1", + .of_match_table = shtc1_of_match, + }, .probe = shtc1_probe, .id_table = shtc1_id, }; From patchwork Sun Jul 12 04:44:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Ruehl X-Patchwork-Id: 11658013 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 12939618 for ; Sun, 12 Jul 2020 04:44:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0168B20809 for ; Sun, 12 Jul 2020 04:44:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728256AbgGLEoc (ORCPT ); Sun, 12 Jul 2020 00:44:32 -0400 Received: from server-x.ipv4.hkg02.ds.network ([27.111.83.178]:37170 "EHLO mail.gtsys.com.hk" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1728048AbgGLEob (ORCPT ); Sun, 12 Jul 2020 00:44:31 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.gtsys.com.hk (Postfix) with ESMTP id DF03720139AB; Sun, 12 Jul 2020 12:44:28 +0800 (HKT) X-Virus-Scanned: Debian amavisd-new at gtsys.com.hk Received: from mail.gtsys.com.hk ([127.0.0.1]) by localhost (mail.gtsys.com.hk [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mNmcZS_kDkJ2; Sun, 12 Jul 2020 12:44:28 +0800 (HKT) Received: from s01.gtsys.com.hk (unknown [10.128.4.2]) by mail.gtsys.com.hk (Postfix) with ESMTP id C6B4620139A6; Sun, 12 Jul 2020 12:44:28 +0800 (HKT) Received: from armhf2.gtsys.com.hk (unknown [10.128.4.15]) by s01.gtsys.com.hk (Postfix) with ESMTP id C35C2C019F4; Sun, 12 Jul 2020 12:44:28 +0800 (HKT) Received: by armhf2.gtsys.com.hk (Postfix, from userid 1000) id C03D1202299; Sun, 12 Jul 2020 12:44:28 +0800 (HKT) From: Chris Ruehl To: Chris Ruehl Cc: Jack Lo , devicetree@vger.kernel.org, Jean Delvare , Guenter Roeck , Rob Herring , linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v6 2/2] devicetree: hwmon: shtc1: Add sensirion,shtc1.yaml Date: Sun, 12 Jul 2020 12:44:10 +0800 Message-Id: <20200712044411.23323-3-chris.ruehl@gtsys.com.hk> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200712044411.23323-1-chris.ruehl@gtsys.com.hk> References: <20200712044411.23323-1-chris.ruehl@gtsys.com.hk> MIME-Version: 1.0 Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org Add documentation for the newly added DTS support in the shtc1 driver. To align with the drivers logic to have high precision by default a boolean sensirion,low_precision is used to switch to low precision. Signed-off-by: Chris Ruehl --- .../bindings/hwmon/sensirion,shtc1.yaml | 57 +++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/sensirion,shtc1.yaml diff --git a/Documentation/devicetree/bindings/hwmon/sensirion,shtc1.yaml b/Documentation/devicetree/bindings/hwmon/sensirion,shtc1.yaml new file mode 100644 index 000000000000..752fd32eed25 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/sensirion,shtc1.yaml @@ -0,0 +1,57 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/sensirion,shtc1.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sensirion SHTC1 Humidity and Temperature Sensor IC + +maintainers: + - chris.ruehl@gtsys.com.hk + +description: | + The SHTC1, SHTW1 and SHTC3 are digital humidity and temperature sensor + designed especially for battery-driven high-volume consumer electronics + applications. + For further information refere to Documentation/hwmon/shtc1.rst + + This binding document describes the binding for the hardware monitor + portion of the driver. + +properties: + compatible: + enum: + - sensirion,shtc1 + - sensirion,shtw1 + - sensirion,shtc3 + + reg: + const: 0x70 + + sensirion,blocking-io: + $ref: /schemas/types.yaml#definitions/flag + description: + If set, the driver hold the i2c bus until measurement is finished. + + sensirion,low-precision: + $ref: /schemas/types.yaml#definitions/flag + description: + If set, the sensor aquire data with low precision (not recommended). + The driver aquire data with high precision by default. + +required: + - compatible + - reg + +examples: + - | + i2c1 { + clock-frequency = <400000>; + + shtc3@70 { + compatible = "sensirion,shtc3"; + reg = <0x70>; + sensirion,blocking-io; + }; + }; +...