From patchwork Fri Sep 21 22:32:15 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolin Chen X-Patchwork-Id: 10611097 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 84983112B for ; Fri, 21 Sep 2018 22:32:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 76F412D32A for ; Fri, 21 Sep 2018 22:32:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6B3DF2D345; Fri, 21 Sep 2018 22:32:43 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 186852D32A for ; Fri, 21 Sep 2018 22:32:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391607AbeIVEXZ (ORCPT ); Sat, 22 Sep 2018 00:23:25 -0400 Received: from mail-pl1-f195.google.com ([209.85.214.195]:35368 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725833AbeIVEXY (ORCPT ); Sat, 22 Sep 2018 00:23:24 -0400 Received: by mail-pl1-f195.google.com with SMTP id g2-v6so6542293plo.2; Fri, 21 Sep 2018 15:32:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=cB+2D/GSI/kMki3Q36tKZbfbcvl/nIbd9au7x+bETgs=; b=T2+0dM0ppHqsYpAJl3qwtjGtY8QpZLtDKtyQ9mosM7cnCvuRJBb5DwFyn2H1Q0n1Gq GuYPpIBDJEIW26bNkXvGpz4kq160phFbcvVfmeY+/0UBYajrdWxtDd7s8/Mxp0StxKjz KrctLZTnZRCx964obNvPnZFzIUeW3fedhgqSYiUXMdkUvuE4o+GruOwpHfeu7yl8U9us 7W84LHmrFeb37ZcT5cgA1d+0FhcLn6lNJ7tzJXf3VIHGi4/LuHaJJlNO1Agm1k5myHUJ K515HlJIrnsSqqBLtNDK7cUqY8zeV11Y8hAfQgloOzwVb1gq0PTlj3ileS/k8fS6v9LZ MUdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=cB+2D/GSI/kMki3Q36tKZbfbcvl/nIbd9au7x+bETgs=; b=q0WGzRTQOmOpAxXxGdJaHjBds6dzndmOJZxWXKcFOwK48ssT4QWMEXvHY6/8wuq10v kaggJ9pYMB2SdH9mG+4phEjJ1gtTZRkHRhvHF1WmtT10tXzncaAqzh9ksa8C5efuw0qs Hu887F+0aQ3dX0vcfoTYUikOfpV+kZY7n3XFWfPo3XadydD4mikPMZpLgguvV2DW0m0C Lwf3lr5/fIs5XJUhQjn0Ubkck2/0QRHfLBiRI4QsqXCVSd+HrJNIY2Rj7h8z5LAVR7kP eXnifadwo0JMhnNzURvO4rgDCBNF05p+ConOkjs3GzVmgJN8kbJDtCW45b74Y3w2ReOq AWGQ== X-Gm-Message-State: APzg51DDVp1F+WGG4iqlAMntitz3zShBULDVdalNfPha+PJh5X+DdVvN A9LjZLp2D/1H1IUEd7GcvQQ= X-Google-Smtp-Source: ANB0VdafsAGUr95ZDnX1fwP/EMEw4vzYUvo7w55oWuEfYNgDaE6pt5dxeVENkDMbfARDgiUmBdn50g== X-Received: by 2002:a17:902:163:: with SMTP id 90-v6mr45926125plb.322.1537569149562; Fri, 21 Sep 2018 15:32:29 -0700 (PDT) Received: from Asurada-Nvidia.nvidia.com (thunderhill.nvidia.com. [216.228.112.22]) by smtp.gmail.com with ESMTPSA id 203-v6sm31683227pgb.14.2018.09.21.15.32.28 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 21 Sep 2018 15:32:29 -0700 (PDT) From: Nicolin Chen To: jdelvare@suse.com, linux@roeck-us.net, robh+dt@kernel.org, mark.rutland@arm.com, corbet@lwn.net Cc: afd@ti.com, linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Subject: [PATCH v3 1/2] dt-bindings: hwmon: Add ina3221 documentation Date: Fri, 21 Sep 2018 15:32:15 -0700 Message-Id: <20180921223216.634-2-nicoleotsuka@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180921223216.634-1-nicoleotsuka@gmail.com> References: <20180921223216.634-1-nicoleotsuka@gmail.com> Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Texas Instruments INA3221 is a triple-channel shunt and bus voltage monitor. This patch adds a DT binding doc for it. Signed-off-by: Nicolin Chen --- Changelog v2->v3: * Added a simple subject in the line 1 * Fixed the shunt resistor value in the example v1->v2: * Dropped channel name properties * Added child node definitions. * * Added shunt resistor property in the child node * * Added status property to indicate connection status * * Changed to use child node name as the label of input source .../devicetree/bindings/hwmon/ina3221.txt | 38 +++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/ina3221.txt diff --git a/Documentation/devicetree/bindings/hwmon/ina3221.txt b/Documentation/devicetree/bindings/hwmon/ina3221.txt new file mode 100644 index 000000000000..bcfd5b9c697b --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ina3221.txt @@ -0,0 +1,38 @@ +Texas Instruments INA3221 Device Tree Bindings + +1) ina3221 node + Required properties: + - compatible: Must be "ti,ina3221" + - reg: I2C address + + = The node contains optional child nodes for three channels = + = Each child node describes the information of input source = + + Example: + + ina3221@40 { + compatible = "ti,ina3221"; + reg = <0x40>; + [ child node definitions... ] + }; + +2) child nodes + The names of child nodes should indicate input source names + + Required properties: + - input-id: Must be 1, 2 or 3 + + Optional properties: + - shunt-resistor: Shunt resistor value in micro-Ohm + - status: Should be "disabled" if no input source + + Example: + + input1 { + input-id = <0x1>; + status = "disabled"; + }; + VDD_GPU { + input-id = <0x2>; + shunt-resistor = <5000>; + }; From patchwork Fri Sep 21 22:32:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nicolin Chen X-Patchwork-Id: 10611095 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A3CFA14DA for ; Fri, 21 Sep 2018 22:32:39 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 948602D32A for ; Fri, 21 Sep 2018 22:32:39 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8823E2D345; Fri, 21 Sep 2018 22:32:39 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B72362D32A for ; Fri, 21 Sep 2018 22:32:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2391641AbeIVEX1 (ORCPT ); Sat, 22 Sep 2018 00:23:27 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:42730 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391611AbeIVEX0 (ORCPT ); Sat, 22 Sep 2018 00:23:26 -0400 Received: by mail-pg1-f195.google.com with SMTP id y4-v6so6652842pgp.9; Fri, 21 Sep 2018 15:32:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Bl5J57jnO4UAGPhrdjO1sBy09ug5dJPWtRJTGpbpdII=; b=YUjZMtSvBeWy1tYtJHJ2K8LKaBlF2gnS6u0uqh7EG+lqfLQ3aGjcpLqZPqBnX+5g+1 C9+OKAlDlNpTzxazUsRDbdv6KIUCR6+6k0VzYxlVuUmZ+2b3vX2VlxosCAIXR7Y5Fpho jjHVeWONfgsKkm2ZTwzF3EwjALxlO69Qdbz0kbsO47ozhSrLiWkDdljtfg6GcFW5861H sfRVtIeL5azNvVzGXwIvxasdshZTB9f0b7FZ6FxTOLjQAOfhbLGqOeEZdoQO+r4lcgR1 4SRO49irOhnrOchgi1eFCfqylyB9Ucwvh/O+D1mj6u7Ta9STIfyQdbMqDBbBiTVh+wyC m6sA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Bl5J57jnO4UAGPhrdjO1sBy09ug5dJPWtRJTGpbpdII=; b=GfEGwlvYlRE1380SNeB8FioEtWSDkAt/MiApNn0LsuLWSCUdfao7f54twkm5O9crnI pX+YpiCOQP0GLqsfqqgrzIGsHvadkKH3LFFncu9AYveOUvDlKPcE39u/2v/PGmkn7HES fiFId5G/9O5G1Q6nKQq2thgA6YM/pmGC19iS3yB2H8+L7xQGZAYOebAo9XNEi5X+f/+m 7vdeROSBFS82QklFtL7SKzTplbdAN9kiMbTd/NMzdCxrzDX6DhtBYJI/0tYTX7aPxRmu Dvz4Y1181md1XD3G95R6NyLTOiPMryl2t2o2/Nons3/xMZVPY2n4Z69kLBTMKb/14oIa MNgw== X-Gm-Message-State: ABuFfogVlyPy87o8tXzbeYyTqVICP65EAWxVnRA82keR1mU4dsMudAxJ 98w0dMCpBIGrwWjVRlD2UOo= X-Google-Smtp-Source: ACcGV628+foiqx8c3/TjM43lmD+a5/2nsDEAP+T/7STxOaD5pkGJ1TWHQP6j7DMpPJNtrjzizxTfpA== X-Received: by 2002:a63:608c:: with SMTP id u134-v6mr738637pgb.266.1537569150477; Fri, 21 Sep 2018 15:32:30 -0700 (PDT) Received: from Asurada-Nvidia.nvidia.com (thunderhill.nvidia.com. [216.228.112.22]) by smtp.gmail.com with ESMTPSA id 203-v6sm31683227pgb.14.2018.09.21.15.32.29 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 21 Sep 2018 15:32:29 -0700 (PDT) From: Nicolin Chen To: jdelvare@suse.com, linux@roeck-us.net, robh+dt@kernel.org, mark.rutland@arm.com, corbet@lwn.net Cc: afd@ti.com, linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org Subject: [PATCH v3 2/2] hwmon: ina3221: Read channel input source info from DT Date: Fri, 21 Sep 2018 15:32:16 -0700 Message-Id: <20180921223216.634-3-nicoleotsuka@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180921223216.634-1-nicoleotsuka@gmail.com> References: <20180921223216.634-1-nicoleotsuka@gmail.com> Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Nicolin Chen An ina3221 chip has three input ports. Each port is used to measure the voltage and current of its input source. The DT binding now has defined bindings for their input sources, so the driver should read these information and handle accordingly. This patch adds a new structure of input source specific information including input source label, shunt resistor value and its connection status. It exposes these labels via sysfs and also disables those channels where there's no input source being connected. Signed-off-by: Nicolin Chen --- Changelog v2->v3: * N/A v1->v2: * Added a structure for input source corresponding to DT bindings * Moved shunt resistor value to the structure * Defined in[123]_label sysfs nodes instead of name[123]_input * Updated probe() function to get information from DT * Updated ina3221 hwmon documentation for the labels * Dropped dynamical group definition to keep all groups as they were * * Will send an incremental patch later apart from this DT binding series Documentation/hwmon/ina3221 | 1 + drivers/hwmon/ina3221.c | 126 +++++++++++++++++++++++++++++++++--- 2 files changed, 117 insertions(+), 10 deletions(-) diff --git a/Documentation/hwmon/ina3221 b/Documentation/hwmon/ina3221 index 0ff74854cb2e..2726038be5bd 100644 --- a/Documentation/hwmon/ina3221 +++ b/Documentation/hwmon/ina3221 @@ -22,6 +22,7 @@ Sysfs entries ------------- in[123]_input Bus voltage(mV) channels +in[123]_label Voltage channel labels curr[123]_input Current(mA) measurement channels shunt[123]_resistor Shunt resistance(uOhm) channels curr[123]_crit Critical alert current(mA) setting, activates the diff --git a/drivers/hwmon/ina3221.c b/drivers/hwmon/ina3221.c index e6b49500c52a..ba470fc53e27 100644 --- a/drivers/hwmon/ina3221.c +++ b/drivers/hwmon/ina3221.c @@ -41,6 +41,7 @@ #define INA3221_CONFIG_MODE_SHUNT BIT(1) #define INA3221_CONFIG_MODE_BUS BIT(2) #define INA3221_CONFIG_MODE_CONTINUOUS BIT(3) +#define INA3221_CONFIG_CHx_EN(x) BIT(14 - (x)) #define INA3221_RSHUNT_DEFAULT 10000 @@ -86,16 +87,28 @@ static const unsigned int register_channel[] = { [INA3221_WARN3] = INA3221_CHANNEL3, }; +/** + * struct ina3221_input - channel input source specific information + * @label: label of channel input source + * @shunt_resistor: shunt resistor value of channel input source + * @disconnected: connection status of channel input source + */ +struct ina3221_input { + const char *label; + int shunt_resistor; + bool disconnected; +}; + /** * struct ina3221_data - device specific information * @regmap: Register map of the device * @fields: Register fields of the device - * @shunt_resistors: Array of resistor values per channel + * @inputs: Array of channel input source specific structures */ struct ina3221_data { struct regmap *regmap; struct regmap_field *fields[F_MAX_FIELDS]; - int shunt_resistors[INA3221_NUM_CHANNELS]; + struct ina3221_input inputs[INA3221_NUM_CHANNELS]; }; static int ina3221_read_value(struct ina3221_data *ina, unsigned int reg, @@ -131,6 +144,17 @@ static ssize_t ina3221_show_bus_voltage(struct device *dev, return snprintf(buf, PAGE_SIZE, "%d\n", voltage_mv); } +static ssize_t ina3221_show_label(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute *sd_attr = to_sensor_dev_attr(attr); + struct ina3221_data *ina = dev_get_drvdata(dev); + unsigned int channel = sd_attr->index; + struct ina3221_input *input = &ina->inputs[channel]; + + return snprintf(buf, PAGE_SIZE, "%s\n", input->label); +} + static ssize_t ina3221_show_shunt_voltage(struct device *dev, struct device_attribute *attr, char *buf) @@ -155,7 +179,8 @@ static ssize_t ina3221_show_current(struct device *dev, struct ina3221_data *ina = dev_get_drvdata(dev); unsigned int reg = sd_attr->index; unsigned int channel = register_channel[reg]; - int resistance_uo = ina->shunt_resistors[channel]; + struct ina3221_input *input = &ina->inputs[channel]; + int resistance_uo = input->shunt_resistor; int val, current_ma, voltage_nv, ret; ret = ina3221_read_value(ina, reg, &val); @@ -176,7 +201,8 @@ static ssize_t ina3221_set_current(struct device *dev, struct ina3221_data *ina = dev_get_drvdata(dev); unsigned int reg = sd_attr->index; unsigned int channel = register_channel[reg]; - int resistance_uo = ina->shunt_resistors[channel]; + struct ina3221_input *input = &ina->inputs[channel]; + int resistance_uo = input->shunt_resistor; int val, current_ma, voltage_uv, ret; ret = kstrtoint(buf, 0, ¤t_ma); @@ -209,11 +235,9 @@ static ssize_t ina3221_show_shunt(struct device *dev, struct sensor_device_attribute *sd_attr = to_sensor_dev_attr(attr); struct ina3221_data *ina = dev_get_drvdata(dev); unsigned int channel = sd_attr->index; - unsigned int resistance_uo; + struct ina3221_input *input = &ina->inputs[channel]; - resistance_uo = ina->shunt_resistors[channel]; - - return snprintf(buf, PAGE_SIZE, "%d\n", resistance_uo); + return snprintf(buf, PAGE_SIZE, "%d\n", input->shunt_resistor); } static ssize_t ina3221_set_shunt(struct device *dev, @@ -223,6 +247,7 @@ static ssize_t ina3221_set_shunt(struct device *dev, struct sensor_device_attribute *sd_attr = to_sensor_dev_attr(attr); struct ina3221_data *ina = dev_get_drvdata(dev); unsigned int channel = sd_attr->index; + struct ina3221_input *input = &ina->inputs[channel]; int val; int ret; @@ -232,7 +257,7 @@ static ssize_t ina3221_set_shunt(struct device *dev, val = clamp_val(val, 1, INT_MAX); - ina->shunt_resistors[channel] = val; + input->shunt_resistor = val; return count; } @@ -261,6 +286,14 @@ static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, ina3221_show_bus_voltage, NULL, INA3221_BUS3); +/* voltage channel label */ +static SENSOR_DEVICE_ATTR(in1_label, 0444, + ina3221_show_label, NULL, INA3221_CHANNEL1); +static SENSOR_DEVICE_ATTR(in2_label, 0444, + ina3221_show_label, NULL, INA3221_CHANNEL2); +static SENSOR_DEVICE_ATTR(in3_label, 0444, + ina3221_show_label, NULL, INA3221_CHANNEL3); + /* calculated current */ static SENSOR_DEVICE_ATTR(curr1_input, S_IRUGO, ina3221_show_current, NULL, INA3221_SHUNT1); @@ -320,6 +353,7 @@ static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, static struct attribute *ina3221_attrs[] = { /* channel 1 */ &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_label.dev_attr.attr, &sensor_dev_attr_curr1_input.dev_attr.attr, &sensor_dev_attr_shunt1_resistor.dev_attr.attr, &sensor_dev_attr_curr1_crit.dev_attr.attr, @@ -330,6 +364,7 @@ static struct attribute *ina3221_attrs[] = { /* channel 2 */ &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_label.dev_attr.attr, &sensor_dev_attr_curr2_input.dev_attr.attr, &sensor_dev_attr_shunt2_resistor.dev_attr.attr, &sensor_dev_attr_curr2_crit.dev_attr.attr, @@ -340,6 +375,7 @@ static struct attribute *ina3221_attrs[] = { /* channel 3 */ &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in3_label.dev_attr.attr, &sensor_dev_attr_curr3_input.dev_attr.attr, &sensor_dev_attr_shunt3_resistor.dev_attr.attr, &sensor_dev_attr_curr3_crit.dev_attr.attr, @@ -370,6 +406,60 @@ static const struct regmap_config ina3221_regmap_config = { .volatile_table = &ina3221_volatile_table, }; +static int ina3221_probe_child_from_dt(struct device *dev, + struct device_node *child, + struct ina3221_data *ina) +{ + struct ina3221_input *input; + u32 val; + int ret; + + ret = of_property_read_u32(child, "input-id", &val); + if (ret) { + dev_err(dev, "missing input-id property of %s\n", child->name); + return ret; + } else if (val < 1 || val > INA3221_NUM_CHANNELS) { + dev_err(dev, "invalid input-id %d of %s\n", val, child->name); + return ret; + } + + input = &ina->inputs[val - 1]; + + /* Log the disconnected channel input */ + if (!of_device_is_available(child)) { + input->disconnected = true; + return 0; + } + + /* Log the connected channel input */ + input->label = child->name; + + /* Overwrite default shunt resistor value optionally */ + if (!of_property_read_u32(child, "shunt-resistor", &val)) + input->shunt_resistor = val; + + return 0; +} + +static int ina3221_probe_from_dt(struct device *dev, struct ina3221_data *ina) +{ + const struct device_node *np = dev->of_node; + struct device_node *child; + int ret; + + /* Compatible with non-DT platforms */ + if (!np) + return 0; + + for_each_child_of_node(np, child) { + ret = ina3221_probe_child_from_dt(dev, child, ina); + if (ret) + return ret; + } + + return 0; +} + static int ina3221_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -377,6 +467,7 @@ static int ina3221_probe(struct i2c_client *client, struct ina3221_data *ina; struct device *hwmon_dev; int i, ret; + u16 mask; ina = devm_kzalloc(dev, sizeof(*ina), GFP_KERNEL); if (!ina) @@ -399,7 +490,13 @@ static int ina3221_probe(struct i2c_client *client, } for (i = 0; i < INA3221_NUM_CHANNELS; i++) - ina->shunt_resistors[i] = INA3221_RSHUNT_DEFAULT; + ina->inputs[i].shunt_resistor = INA3221_RSHUNT_DEFAULT; + + ret = ina3221_probe_from_dt(dev, ina); + if (ret) { + dev_err(dev, "Unable to probe from device treee\n"); + return ret; + } ret = regmap_field_write(ina->fields[F_RST], true); if (ret) { @@ -407,6 +504,15 @@ static int ina3221_probe(struct i2c_client *client, return ret; } + /* Disable channels if their inputs are disconnected */ + for (i = 0, mask = 0; i < INA3221_NUM_CHANNELS; i++) { + if (ina->inputs[i].disconnected) + mask |= INA3221_CONFIG_CHx_EN(i); + } + ret = regmap_update_bits(ina->regmap, INA3221_CONFIG, mask, 0); + if (ret) + return ret; + hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, ina, ina3221_groups);