From patchwork Wed Nov 6 15:05:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: wenliang X-Patchwork-Id: 13865069 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.4]) by smtp.subspace.kernel.org (Postfix) with ESMTP id AB2FB18FDCE; Wed, 6 Nov 2024 15:08:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.4 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730905708; cv=none; b=mjz4nExOtSzwWkSWgeWfvqpP0XKWFhbrR0SlbhzVK43NJy6BH+FjHXm8+lh/k7LHHbsjHnTeCq3JdZ7kN30T5kUpnpFuLLRb0DxBA9bDhaJCYDJ2q98Dk6PHFFnPIguV7m822EUjavECKY4MeH+9GK8FWoStNklc3UIN69e24eo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730905708; c=relaxed/simple; bh=APX+RLEUA5nmLMf40pq30UlMWTDnoMDjYzT8eTcy5kE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DA1xLq9RPiqGiPFWhYsDLUAvTR9t7gSZcx9Gk0Ynr82xAwIewaI1xA1uBK4dUUvQInoeAxjp0T1Pl/0V5Qmzi0Gs3NhWCJKAYBfNcw0mgaGwtBGzPnJragvMdYHYGRIeX8eWYrTXLerhoGYAQ+zkzfcCkBQEOdIMey8QDwZTIAk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=pK3RLiW1; arc=none smtp.client-ip=117.135.210.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="pK3RLiW1" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-ID:MIME-Version; bh=xDdJn eEVOdZSCZGfQpPwB6I96M8lbSPghhlVS+Nvy4o=; b=pK3RLiW1LdPXjD80cPgiq ogljBw6btVNaVqzKFkwHXVmp7ZaSBclSE7AmKQoxtN+q95eGmpnB0K43NWyVrPrS mS3SsAAFkTcCxnvzIqCkq3HMzwFQEhWuFjwGwdn8Htv+6Q4y73I2a6fevs+359/1 0UBVuhRSb6qAbr/eYXEAW0= Received: from 100ask.localdomain (unknown [112.10.131.71]) by gzsmtp4 (Coremail) with SMTP id PygvCgAn76_NhStnn+5rCg--.55144S2; Wed, 06 Nov 2024 23:05:50 +0800 (CST) From: wenliang To: linux@roeck-us.net Cc: wenliang , jdelvare@suse.com, corbet@lwn.net, linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 1/2] hwmon: (ina226) Add support for SY24655 Date: Wed, 6 Nov 2024 10:05:46 -0500 Message-ID: <20241106150547.2538-1-wenliang202407@163.com> X-Mailer: git-send-email 2.47.0.229.g8f8d6eee53 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: PygvCgAn76_NhStnn+5rCg--.55144S2 X-Coremail-Antispam: 1Uf129KBjvJXoW3CFW7WF4rGFWktrWkGrWfXwb_yoWDtry7pr ZxGa4ftrW8JFyfXr4Dt3yrGr15Awn7ArW8Cr18G34ruF45Aryvkr1Utr18tFWUGrykAF4j qFyktry8Cr1UJrUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0pRIkshUUUUU= X-CM-SenderInfo: xzhqzxhdqjjiisuqlqqrwthudrp/1tbiow2M02cnrJ46YQACsa SY24655: Support for current and voltage detection as well as power calculation. Signed-off-by: wenliang --- ina2xx.rst: Add document content description for SY24655, including datasheet, parameter description, and chip function description. ina2xx.c: Add register addresses unique(SY24655_EIN and SY24655_ACCUM_CONFIG) to SY24655 for data reading and initialization. Add has_power_average in struct ina2xx_config to control average power reading. Add initialization data for SY24655. Initialize the power accumulation register(SY24655_ACCUM_CONFIG) for configuration SY24655. Add a read function to the EIN register(48-bit reading). Documentation/hwmon/ina2xx.rst | 27 +++++++++- drivers/hwmon/Kconfig | 2 +- drivers/hwmon/ina2xx.c | 96 ++++++++++++++++++++++++++++++++-- 3 files changed, 118 insertions(+), 7 deletions(-) diff --git a/Documentation/hwmon/ina2xx.rst b/Documentation/hwmon/ina2xx.rst index 1ce161e6c0bf..a3860aae444c 100644 --- a/Documentation/hwmon/ina2xx.rst +++ b/Documentation/hwmon/ina2xx.rst @@ -63,6 +63,17 @@ Supported chips: https://www.ti.com/ + * Silergy SY24655 + + Prefix: 'sy24655' + + Addresses: I2C 0x40 - 0x4f + + Datasheet: Publicly available at the Silergy website + + https://us1.silergy.com/ + + Author: Lothar Felten Description @@ -85,6 +96,11 @@ bus supply voltage. INA260 is a high or low side current and power monitor with integrated shunt resistor. +The SY24655 is a high- and low-side current shunt and power monitor with an I2C +interface. The SY24655 supports both shunt drop and supply voltage, with +programmable calibration value and conversion times. The SY24655 can also +calculate average power for use in energy conversion. + 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 @@ -108,8 +124,8 @@ power1_input Power(uW) measurement channel shunt_resistor Shunt resistance(uOhm) channel (not for ina260) ======================= =============================================== -Additional sysfs entries for ina226, ina230, ina231, and ina260 ---------------------------------------------------------------- +Additional sysfs entries for ina226, ina230, ina231, ina260, and sy24655 +------------------------------------------------------------------------ ======================= ==================================================== curr1_lcrit Critical low current @@ -130,6 +146,13 @@ update_interval data conversion time; affects number of samples used to average results for shunt and bus voltages. ======================= ==================================================== +Sysfs entries for sy24655 only +------------------------------ + +======================= ==================================================== +power1_average average power from last reading to the present. +======================= ==================================================== + .. note:: - Configure `shunt_resistor` before configure `power1_crit`, because power diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index cfb4e9314c62..a837b7a1cff4 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -2189,7 +2189,7 @@ config SENSORS_INA2XX select REGMAP_I2C help If you say yes here you get support for INA219, INA220, INA226, - INA230, INA231, and INA260 power monitor chips. + INA230, INA231, INA260, and SY24655 power monitor chips. The INA2xx driver is configured for the default configuration of the part as described in the datasheet. diff --git a/drivers/hwmon/ina2xx.c b/drivers/hwmon/ina2xx.c index cecc80a41a97..16fdbc0eb1f9 100644 --- a/drivers/hwmon/ina2xx.c +++ b/drivers/hwmon/ina2xx.c @@ -51,12 +51,19 @@ #define INA226_ALERT_LIMIT 0x07 #define INA226_DIE_ID 0xFF -#define INA2XX_MAX_REGISTERS 8 +/* SY24655 register definitions */ +#define SY24655_EIN 0x0A +#define SY24655_ACCUM_CONFIG 0x0D +#define INA2XX_MAX_REGISTERS 0x0D /* 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 */ +#define SY24655_CONFIG_DEFAULT 0x4527 /* averages=16 */ + +/* (only for sy24655) */ +#define SY24655_ACCUM_CONFIG_DEFAULT 0x044C /* continuous mode, clear after read*/ /* worst case is 68.10 ms (~14.6Hz, ina219) */ #define INA2XX_CONVERSION_RATE 15 @@ -97,6 +104,7 @@ static bool ina2xx_writeable_reg(struct device *dev, unsigned int reg) case INA2XX_CALIBRATION: case INA226_MASK_ENABLE: case INA226_ALERT_LIMIT: + case SY24655_ACCUM_CONFIG: return true; default: return false; @@ -127,12 +135,13 @@ static const struct regmap_config ina2xx_regmap_config = { .writeable_reg = ina2xx_writeable_reg, }; -enum ina2xx_ids { ina219, ina226, ina260 }; +enum ina2xx_ids { ina219, ina226, ina260, sy24655 }; struct ina2xx_config { u16 config_default; bool has_alerts; /* chip supports alerts and limits */ bool has_ishunt; /* chip has internal shunt resistor */ + bool has_power_average; /* chip has internal shunt resistor */ int calibration_value; int shunt_div; int bus_voltage_shift; @@ -149,6 +158,7 @@ struct ina2xx_data { long power_lsb_uW; struct mutex config_lock; struct regmap *regmap; + struct i2c_client *client; }; static const struct ina2xx_config ina2xx_config[] = { @@ -161,6 +171,7 @@ static const struct ina2xx_config ina2xx_config[] = { .power_lsb_factor = 20, .has_alerts = false, .has_ishunt = false, + .has_power_average = false, }, [ina226] = { .config_default = INA226_CONFIG_DEFAULT, @@ -171,6 +182,7 @@ static const struct ina2xx_config ina2xx_config[] = { .power_lsb_factor = 25, .has_alerts = true, .has_ishunt = false, + .has_power_average = false, }, [ina260] = { .config_default = INA260_CONFIG_DEFAULT, @@ -180,6 +192,18 @@ static const struct ina2xx_config ina2xx_config[] = { .power_lsb_factor = 8, .has_alerts = true, .has_ishunt = true, + .has_power_average = false, + }, + [sy24655] = { + .config_default = SY24655_CONFIG_DEFAULT, + .calibration_value = 4096, + .shunt_div = 400, + .bus_voltage_shift = 0, + .bus_voltage_lsb = 1250, + .power_lsb_factor = 25, + .has_alerts = true, + .has_ishunt = false, + .has_power_average = true, }, }; @@ -485,6 +509,42 @@ static int ina2xx_in_read(struct device *dev, u32 attr, int channel, long *val) return 0; } +/* + * Configuring the READ_EIN (bit 10) of the ACCUM_CONFIG register to 1 + * can clear accumulator and sample_count after reading the EIN register. + * This way, the average power between the last read and the current + * read can be obtained. By combining with accurate time data from + * outside, the energy consumption during that period can be calculated. + */ +static int sy24655_average_power_read(struct ina2xx_data *data, u8 reg, long *val) +{ + u8 template[6]; + int ret; + long accumulator_24, sample_count; + unsigned int regval; + + /* 48-bit register read */ + ret = i2c_smbus_read_i2c_block_data(data->client, reg, 6, template); + if (ret < 0) + return ret; + if (ret != 6) + return -EIO; + accumulator_24 = ((template[3] << 16) | + (template[4] << 8) | + template[5]); + sample_count = ((template[0] << 16) | + (template[1] << 8) | + template[2]); + if (sample_count <= 0) { + *val = 0; + return 0; + } + + *val = DIV_ROUND_CLOSEST(accumulator_24, sample_count) * data->power_lsb_uW; + + return 0; +} + static int ina2xx_power_read(struct device *dev, u32 attr, long *val) { struct ina2xx_data *data = dev_get_drvdata(dev); @@ -492,6 +552,8 @@ static int ina2xx_power_read(struct device *dev, u32 attr, long *val) switch (attr) { case hwmon_power_input: return ina2xx_read_init(dev, INA2XX_POWER, val); + case hwmon_power_average: + return sy24655_average_power_read(data, SY24655_EIN, val); case hwmon_power_crit: return ina226_alert_limit_read(data, INA226_POWER_OVER_LIMIT_MASK, INA2XX_POWER, val); @@ -651,6 +713,7 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type { const struct ina2xx_data *data = _data; bool has_alerts = data->config->has_alerts; + bool has_power_average = data->config->has_power_average; enum ina2xx_ids chip = data->chip; switch (type) { @@ -668,6 +731,11 @@ static umode_t ina2xx_is_visible(const void *_data, enum hwmon_sensor_types type if (has_alerts) return 0444; break; + case hwmon_power_average: + if (has_power_average) + return 0444; + break; + return 0444; default: break; } @@ -734,7 +802,8 @@ static const struct hwmon_channel_info * const ina2xx_info[] = { HWMON_CHANNEL_INFO(curr, HWMON_C_INPUT | HWMON_C_CRIT | HWMON_C_CRIT_ALARM | HWMON_C_LCRIT | HWMON_C_LCRIT_ALARM), HWMON_CHANNEL_INFO(power, - HWMON_P_INPUT | HWMON_P_CRIT | HWMON_P_CRIT_ALARM), + HWMON_P_INPUT | HWMON_P_CRIT | HWMON_P_CRIT_ALARM | + HWMON_P_AVERAGE), NULL }; @@ -839,6 +908,19 @@ static int ina2xx_init(struct device *dev, struct ina2xx_data *data) INA226_ALERT_LATCH_ENABLE | FIELD_PREP(INA226_ALERT_POLARITY, active_high)); } + if (data->config->has_power_average) { + if (data->chip == sy24655) { + /* + * Initialize the power accumulation method to continuous + * mode and clear the EIN register after each read of the + * EIN register + */ + ret = regmap_write(regmap, SY24655_ACCUM_CONFIG, + SY24655_ACCUM_CONFIG_DEFAULT); + if (ret < 0) + return ret; + } + } if (data->config->has_ishunt) return 0; @@ -868,6 +950,7 @@ static int ina2xx_probe(struct i2c_client *client) return -ENOMEM; /* set the device type */ + data->client = client; data->config = &ina2xx_config[chip]; data->chip = chip; mutex_init(&data->config_lock); @@ -906,6 +989,7 @@ static const struct i2c_device_id ina2xx_id[] = { { "ina230", ina226 }, { "ina231", ina226 }, { "ina260", ina260 }, + { "sy24655", sy24655 }, { } }; MODULE_DEVICE_TABLE(i2c, ina2xx_id); @@ -935,7 +1019,11 @@ static const struct of_device_id __maybe_unused ina2xx_of_match[] = { .compatible = "ti,ina260", .data = (void *)ina260 }, - { }, + { + .compatible = "silergy,sy24655", + .data = (void *)sy24655 + }, + { } }; MODULE_DEVICE_TABLE(of, ina2xx_of_match);