From patchwork Fri Sep 13 00:31:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guenter Roeck X-Patchwork-Id: 13802914 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B8D801373 for ; Fri, 13 Sep 2024 00:31:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726187513; cv=none; b=HysYH3IQqrkOBQaSoMM//YDFSx1XSqtcrbilVbHwyNrHDS6NRyPc7mBT5Le1UgRzIlDhQHRe6seLpXDUFKwbravfXRjvx8Th9GCO/fkaSJbYjJD6no73WqskGzoITrk2fEXIX5xfs3CSX5Q9mjtE3YNZtP2ZEf10p+NRS+O61Kc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726187513; c=relaxed/simple; bh=lQ4WyVCIu68cV3yrHHbERgq6chd+7wt7JTF0YDBpX8U=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ZjkWF2iwhM+dHmB8RFt4JtxDYlhzaYTanki4RXrQE1mme1tcorE2vCM52mVCAoEKIPrF7RTtzhws6DDsI20zfFrSX/58imzXsm5BI9HryOMWPBtECFtFu0x8kp7Md4Lrn8t4o3PYWVoPKn2R9DEg/hzO3aOfn1g4TGUN/gbKsZI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=roeck-us.net; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=mXLz0NKz; arc=none smtp.client-ip=209.85.214.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=roeck-us.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="mXLz0NKz" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-206f9b872b2so16562955ad.3 for ; Thu, 12 Sep 2024 17:31:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1726187510; x=1726792310; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:sender:from:to:cc:subject:date:message-id:reply-to; bh=KoiI26Rjhzc4PaMqAcuqAix/udLu8WaNbe74p4QUA4A=; b=mXLz0NKzJ63tRQIl9A1Kg87YKa8as8R06+DjlYAcbc18qsoHrtk5LTCwYlJM8zt6V5 hinQQqyvhcWnSECipV3BHfuuWdngeyJK2L0yJ/5cU73eEFGmwb2aXEwbOM+v4TYtipbI RflFrblKdxRkbBXyBWE/UWvE8ocbB5itn9jcoJK7ZviP8qwEbJH1nisVIxrSQqg4pSEB wdV0L3Zok9pANUu8pgGytzc84LBs3tPpOrzpoOzUzzW+toCbiMB2IrUbypUix/uJBMg2 puCKG//7Jkv77RIy5Xs7sAs6W8JoU8DbBCg+qMhONG9fD9K5XLVAIsW6n5pYnkMS2iJW zIow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1726187510; x=1726792310; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:sender:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=KoiI26Rjhzc4PaMqAcuqAix/udLu8WaNbe74p4QUA4A=; b=WxmOQrYmH4WtGVjttblJ1KVMO6HM//Fn6oZsnQFsVNx4aMGRTcFnWCMUrGDPFwftUS wcTkTlOON00sQ/8nQNQ5NxCRxuU2kiCfayWvlzZOt7uRuhEQWWQMz7Ja8CY0vrEByVt9 ds6qXBRhVoK6t6L2Wahr2J+muBQzwXJFN228Mx8SBhCBPKVyLri90y/skmikObKcyEhX PClNZ7OIs1yr83YCz34FyemBwLHQfRYjhJFq5Pbk2DnL8NbTnGJA7uJwLjU5BzlQG2GQ mgtii1n0gdSmcy84LGsHJVRVm+uqGnSThfJ+zv+Ss5eLW+xkQwpExRPhNZqjzbEbbFUb WGkg== X-Gm-Message-State: AOJu0YxoJwHmTG+3mZCUYnczn3F/cFSFzLvo8LCiMOgc5R2MZnZ2MfCk OMInSarpZeLZE7l8I08U/ug9W/iKRhfYE/Eq5DNx6/1xbgHi5bZiUizgKA== X-Google-Smtp-Source: AGHT+IEzgsRh7UJCuA5DZskHSVzIC0F7tUAaqB/ZjIxLsd47EOvqoRPNa2Py3mccakWzMQaXuIbGSA== X-Received: by 2002:a17:902:d2cf:b0:202:4a35:a803 with SMTP id d9443c01a7336-2076e3f1f14mr65823655ad.31.1726187509998; Thu, 12 Sep 2024 17:31:49 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2076af25683sm19361505ad.17.2024.09.12.17.31.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Sep 2024 17:31:48 -0700 (PDT) Sender: Guenter Roeck From: Guenter Roeck To: Hardware Monitoring Cc: Guenter Roeck Subject: [PATCH 1/2] hwmon: (ina2xx) Add support for has_alerts configuration flag Date: Thu, 12 Sep 2024 17:31:44 -0700 Message-ID: <20240913003145.1931634-1-linux@roeck-us.net> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add configuration flag indicating if the chip supports alerts and limits to prepare for adding INA260 support. Signed-off-by: Guenter Roeck Reviewed-by: Tzung-Bi Shih --- drivers/hwmon/ina2xx.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c index f0fa6d073627..03a011c9b73d 100644 --- a/drivers/hwmon/ina2xx.c +++ b/drivers/hwmon/ina2xx.c @@ -129,6 +129,7 @@ enum ina2xx_ids { ina219, ina226 }; struct ina2xx_config { u16 config_default; + bool has_alerts; /* chip supports alerts and limits */ int calibration_value; int shunt_div; int bus_voltage_shift; @@ -155,6 +156,7 @@ static const struct ina2xx_config ina2xx_config[] = { .bus_voltage_shift = 3, .bus_voltage_lsb = 4000, .power_lsb_factor = 20, + .has_alerts = false, }, [ina226] = { .config_default = INA226_CONFIG_DEFAULT, @@ -163,6 +165,7 @@ static const struct ina2xx_config ina2xx_config[] = { .bus_voltage_shift = 0, .bus_voltage_lsb = 1250, .power_lsb_factor = 25, + .has_alerts = true, }, }; @@ -624,6 +627,7 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type u32 attr, int channel) { const struct ina2xx_data *data = _data; + bool has_alerts = data->config->has_alerts; enum ina2xx_ids chip = data->chip; switch (type) { @@ -633,12 +637,12 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type return 0444; case hwmon_in_lcrit: case hwmon_in_crit: - if (chip == ina226) + if (has_alerts) return 0644; break; case hwmon_in_lcrit_alarm: case hwmon_in_crit_alarm: - if (chip == ina226) + if (has_alerts) return 0444; break; default: @@ -651,12 +655,12 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type return 0444; case hwmon_curr_lcrit: case hwmon_curr_crit: - if (chip == ina226) + if (has_alerts) return 0644; break; case hwmon_curr_lcrit_alarm: case hwmon_curr_crit_alarm: - if (chip == ina226) + if (has_alerts) return 0444; break; default: @@ -668,11 +672,11 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type case hwmon_power_input: return 0444; case hwmon_power_crit: - if (chip == ina226) + if (has_alerts) return 0644; break; 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Thu, 12 Sep 2024 17:31:51 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2076af4740bsm19292305ad.90.2024.09.12.17.31.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Sep 2024 17:31:51 -0700 (PDT) Sender: Guenter Roeck From: Guenter Roeck To: Hardware Monitoring Cc: Guenter Roeck , Loic Guegan Subject: [PATCH 2/2] hwmon: (ina260) Add support for INA260 Date: Thu, 12 Sep 2024 17:31:45 -0700 Message-ID: <20240913003145.1931634-2-linux@roeck-us.net> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240913003145.1931634-1-linux@roeck-us.net> References: <20240913003145.1931634-1-linux@roeck-us.net> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 INA260 is similar to other chips of the series, except it has an internal shunt resistor. The calibration register is therefore not present. Also, the current register address was changed, though that does not matter for the driver since the shunt voltage register (which is now the current register) value is already used to read the current. Cc: Loic Guegan Signed-off-by: Guenter Roeck Reviewed-by: Tzung-Bi Shih --- Documentation/hwmon/ina2xx.rst | 23 +++++++++++++++---- drivers/hwmon/Kconfig | 5 ++-- drivers/hwmon/ina2xx.c | 42 ++++++++++++++++++++++++++++++---- 3 files changed, 59 insertions(+), 11 deletions(-) diff --git a/Documentation/hwmon/ina2xx.rst b/Documentation/hwmon/ina2xx.rst index 7f1939b40f74..1ce161e6c0bf 100644 --- a/Documentation/hwmon/ina2xx.rst +++ b/Documentation/hwmon/ina2xx.rst @@ -53,6 +53,16 @@ Supported chips: https://www.ti.com/ + * Texas Instruments INA260 + + Prefix: 'ina260' + + Addresses: I2C 0x40 - 0x4f + + Datasheet: Publicly available at the Texas Instruments website + + https://www.ti.com/ + Author: Lothar Felten Description @@ -72,6 +82,9 @@ INA230 and INA231 are high or low side current shunt and power monitors with an I2C interface. The chips monitor both a shunt voltage drop and bus supply voltage. +INA260 is a high or low side current and power monitor with integrated shunt +resistor. + The shunt value in micro-ohms can be set via platform data or device tree at compile-time or via the shunt_resistor attribute in sysfs at run-time. Please refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings @@ -87,16 +100,16 @@ The actual programmed interval may vary from the desired value. General sysfs entries --------------------- -======================= =============================== +======================= =============================================== in0_input Shunt voltage(mV) channel in1_input Bus voltage(mV) channel curr1_input Current(mA) measurement channel power1_input Power(uW) measurement channel -shunt_resistor Shunt resistance(uOhm) channel -======================= =============================== +shunt_resistor Shunt resistance(uOhm) channel (not for ina260) +======================= =============================================== -Sysfs entries for ina226, ina230 and ina231 only ------------------------------------------------- +Additional sysfs entries for ina226, ina230, ina231, and ina260 +--------------------------------------------------------------- ======================= ==================================================== curr1_lcrit Critical low current diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 65ea92529406..ecf09cd2510c 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -2162,11 +2162,12 @@ config SENSORS_INA2XX select REGMAP_I2C help If you say yes here you get support for INA219, INA220, INA226, - INA230, and INA231 power monitor chips. + INA230, INA231, and INA260 power monitor chips. The INA2xx driver is configured for the default configuration of the part as described in the datasheet. - Default value for Rshunt is 10 mOhms. + Default value for Rshunt is 10 mOhms except for INA260 which has an + internal 2 mOhm shunt resistor. This driver can also be built as a module. If so, the module will be called ina2xx. diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c index 03a011c9b73d..cecc80a41a97 100644 --- a/drivers/hwmon/ina2xx.c +++ b/drivers/hwmon/ina2xx.c @@ -56,12 +56,14 @@ /* settings - depend on use case */ #define INA219_CONFIG_DEFAULT 0x399F /* PGA=8 */ #define INA226_CONFIG_DEFAULT 0x4527 /* averages=16 */ +#define INA260_CONFIG_DEFAULT 0x6527 /* averages=16 */ /* worst case is 68.10 ms (~14.6Hz, ina219) */ #define INA2XX_CONVERSION_RATE 15 #define INA2XX_MAX_DELAY 69 /* worst case delay in ms */ #define INA2XX_RSHUNT_DEFAULT 10000 +#define INA260_RSHUNT 2000 /* bit mask for reading the averaging setting in the configuration register */ #define INA226_AVG_RD_MASK GENMASK(11, 9) @@ -125,11 +127,12 @@ static const struct regmap_config ina2xx_regmap_config = { .writeable_reg = ina2xx_writeable_reg, }; -enum ina2xx_ids { ina219, ina226 }; +enum ina2xx_ids { ina219, ina226, ina260 }; struct ina2xx_config { u16 config_default; bool has_alerts; /* chip supports alerts and limits */ + bool has_ishunt; /* chip has internal shunt resistor */ int calibration_value; int shunt_div; int bus_voltage_shift; @@ -157,6 +160,7 @@ static const struct ina2xx_config ina2xx_config[] = { .bus_voltage_lsb = 4000, .power_lsb_factor = 20, .has_alerts = false, + .has_ishunt = false, }, [ina226] = { .config_default = INA226_CONFIG_DEFAULT, @@ -166,6 +170,16 @@ static const struct ina2xx_config ina2xx_config[] = { .bus_voltage_lsb = 1250, .power_lsb_factor = 25, .has_alerts = true, + .has_ishunt = false, + }, + [ina260] = { + .config_default = INA260_CONFIG_DEFAULT, + .shunt_div = 400, + .bus_voltage_shift = 0, + .bus_voltage_lsb = 1250, + .power_lsb_factor = 8, + .has_alerts = true, + .has_ishunt = true, }, }; @@ -257,6 +271,15 @@ static int ina2xx_read_init(struct device *dev, int reg, long *val) unsigned int regval; int ret, retry; + if (data->config->has_ishunt) { + /* No calibration needed */ + ret = regmap_read(regmap, reg, ®val); + if (ret < 0) + return ret; + *val = ina2xx_get_value(data, reg, regval); + return 0; + } + for (retry = 5; retry; retry--) { ret = regmap_read(regmap, reg, ®val); if (ret < 0) @@ -686,7 +709,7 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type case hwmon_chip: switch (attr) { case hwmon_chip_update_interval: - if (chip == ina226) + if (chip == ina226 || chip == ina260) return 0644; break; default: @@ -795,7 +818,9 @@ static int ina2xx_init(struct device *dev, struct ina2xx_data *data) u32 shunt; int ret; - if (device_property_read_u32(dev, "shunt-resistor", &shunt) < 0) + if (data->config->has_ishunt) + shunt = INA260_RSHUNT; + else if (device_property_read_u32(dev, "shunt-resistor", &shunt) < 0) shunt = INA2XX_RSHUNT_DEFAULT; ret = ina2xx_set_shunt(data, shunt); @@ -815,6 +840,9 @@ static int ina2xx_init(struct device *dev, struct ina2xx_data *data) FIELD_PREP(INA226_ALERT_POLARITY, active_high)); } + if (data->config->has_ishunt) + return 0; + /* * Calibration register is set to the best value, which eliminates * truncation errors on calculating current register in hardware. @@ -860,7 +888,8 @@ static int ina2xx_probe(struct i2c_client *client) hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data, &ina2xx_chip_info, - ina2xx_groups); + data->config->has_ishunt ? + NULL : ina2xx_groups); if (IS_ERR(hwmon_dev)) return PTR_ERR(hwmon_dev); @@ -876,6 +905,7 @@ static const struct i2c_device_id ina2xx_id[] = { { "ina226", ina226 }, { "ina230", ina226 }, { "ina231", ina226 }, + { "ina260", ina260 }, { } }; MODULE_DEVICE_TABLE(i2c, ina2xx_id); @@ -901,6 +931,10 @@ static const struct of_device_id __maybe_unused ina2xx_of_match[] = { .compatible = "ti,ina231", .data = (void *)ina226 }, + { + .compatible = "ti,ina260", + .data = (void *)ina260 + }, { }, }; MODULE_DEVICE_TABLE(of, ina2xx_of_match);