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[86.49.246.187]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49033d5987esm16499845e9.12.2026.05.20.14.16.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 May 2026 14:16:16 -0700 (PDT) From: Joshua Crofts Date: Wed, 20 May 2026 23:15:37 +0200 Subject: [PATCH v2 1/2] dt-bindings: iio: light: veml6030: add veml3328 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260520-veml3328-v2-1-a57f0d9e28d4@gmail.com> References: <20260520-veml3328-v2-0-a57f0d9e28d4@gmail.com> In-Reply-To: <20260520-veml3328-v2-0-a57f0d9e28d4@gmail.com> To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Javier Carrasco , Rishi Gupta Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Joshua Crofts X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1779311774; l=1787; i=joshua.crofts1@gmail.com; s=20260516; h=from:subject:message-id; bh=1XkYcOKA+WTVn3JK4BNV1oCNe0e+OpnigkVRiFBguZQ=; b=/xdMl8Am2N49J/H77VcjWCtkO90/twCwwNZUre+UoTEK7iRlXJnQ2fAcleGu8auCgpC/OUOqo uXe69X4PUs7BBSYy8wN751CIfkWX5fFVqiTz87YfL81wgSZWqB9f065 X-Developer-Key: i=joshua.crofts1@gmail.com; a=ed25519; pk=d2X8EVKEB2uF4AaPPi3iSSI+IJF3/9kOoDYVVmc+G1o= The Vishay VEML3328 is an RGBCIR light sensor that shares similar devicetree properties as other existing VEMLxxxx sensors in the kernel. Signed-off-by: Joshua Crofts Acked-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/iio/light/vishay,veml6030.yaml | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iio/light/vishay,veml6030.ya= ml b/Documentation/devicetree/bindings/iio/light/vishay,veml6030.yaml index 4ea69f1fdd63..0041e1db6838 100644 --- a/Documentation/devicetree/bindings/iio/light/vishay,veml6030.yaml +++ b/Documentation/devicetree/bindings/iio/light/vishay,veml6030.yaml @@ -4,7 +4,7 @@ $id: http://devicetree.org/schemas/iio/light/vishay,veml6030.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# =20 -title: VEML3235, VEML6030, VEML6035 and VEML7700 Ambient Light Sensors (AL= S) +title: VEML3235, VEML3328, VEML6030, VEML6035 and VEML7700 Ambient Light S= ensors (ALS) =20 maintainers: - Rishi Gupta @@ -21,6 +21,7 @@ description: | =20 Specifications about the sensors can be found at: https://www.vishay.com/docs/80131/veml3235.pdf + https://www.vishay.com/docs/84968/veml3328.pdf https://www.vishay.com/docs/84366/veml6030.pdf https://www.vishay.com/docs/84889/veml6035.pdf https://www.vishay.com/docs/84286/veml7700.pdf @@ -29,6 +30,7 @@ properties: compatible: enum: - vishay,veml3235 + - vishay,veml3328 - vishay,veml6030 - vishay,veml6035 - vishay,veml7700 @@ -79,6 +81,7 @@ allOf: compatible: enum: - vishay,veml3235 + - vishay,veml3328 - vishay,veml7700 then: properties: --=20 2.34.1 From nobody Sun May 24 22:35:55 2026 Received: from mail-wm1-f51.google.com (mail-wm1-f51.google.com [209.85.128.51]) (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 72B2435B65D for ; 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[86.49.246.187]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49033d5987esm16499845e9.12.2026.05.20.14.16.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 May 2026 14:16:17 -0700 (PDT) From: Joshua Crofts Date: Wed, 20 May 2026 23:15:38 +0200 Subject: [PATCH v2 2/2] iio: light: veml3328: add support for new device Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260520-veml3328-v2-2-a57f0d9e28d4@gmail.com> References: <20260520-veml3328-v2-0-a57f0d9e28d4@gmail.com> In-Reply-To: <20260520-veml3328-v2-0-a57f0d9e28d4@gmail.com> To: Jonathan Cameron , David Lechner , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Javier Carrasco , Rishi Gupta Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Joshua Crofts X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1779311774; l=13434; i=joshua.crofts1@gmail.com; s=20260516; h=from:subject:message-id; bh=jcxmhUYCLzvJomDllJwXOr8J+/4SyOyHiCVicCdhhyM=; b=e6cztAnbWfR4Oq5Kx5j+AzARS/kwrjvNW+++YOCDNHi3yWRTtHWBnMt4Onsh9UKdz0Fdm62Zn mCXhqdRmJWGBi8/dqYL/JjHxBLY6SgTORYLhXII33uRNJkggLaa9jWi X-Developer-Key: i=joshua.crofts1@gmail.com; a=ed25519; pk=d2X8EVKEB2uF4AaPPi3iSSI+IJF3/9kOoDYVVmc+G1o= Add support for the Vishay VEML3328 RGB/IR light sensor communicating via I2C (SMBus compatible). Also add a new entry for said driver into Kconfig and Makefile. Assisted-by: Gemini:3.1-Pro Signed-off-by: Joshua Crofts --- MAINTAINERS | 5 + drivers/iio/light/Kconfig | 11 ++ drivers/iio/light/Makefile | 1 + drivers/iio/light/veml3328.c | 416 +++++++++++++++++++++++++++++++++++++++= ++++ 4 files changed, 433 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index d6c3c7d22403..8236ba0c41ca 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -28386,6 +28386,11 @@ S: Maintained F: Documentation/devicetree/bindings/iio/light/vishay,veml6030.yaml F: drivers/iio/light/veml3235.c =20 +VISHAY VEML3328 RGB IR LIGHT SENSOR DRIVER +M: Joshua Crofts +S: Maintained +F: drivers/iio/light/veml3328.c + VISHAY VEML6030 AMBIENT LIGHT SENSOR DRIVER M: Javier Carrasco S: Maintained diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index eff33e456c70..1c00bb0de6c8 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -699,6 +699,17 @@ config VEML3235 To compile this driver as a module, choose M here: the module will be called veml3235. =20 +config VEML3328 + tristate "VEML3328 RGBCIR light sensor" + select REGMAP_I2C + depends on I2C + help + Say Y here if you want to build a driver for the Vishay VEML3328 + RGB IR light sensor. + + To compile this driver as a module, choose M here: the + module will be called veml3328 + config VEML6030 tristate "VEML6030 and VEML6035 ambient light sensors" select REGMAP_I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile index c0048e0d5ca8..e03c6e23a9a4 100644 --- a/drivers/iio/light/Makefile +++ b/drivers/iio/light/Makefile @@ -65,6 +65,7 @@ obj-$(CONFIG_US5182D) +=3D us5182d.o obj-$(CONFIG_VCNL4000) +=3D vcnl4000.o obj-$(CONFIG_VCNL4035) +=3D vcnl4035.o obj-$(CONFIG_VEML3235) +=3D veml3235.o +obj-$(CONFIG_VEML3328) +=3D veml3328.o obj-$(CONFIG_VEML6030) +=3D veml6030.o obj-$(CONFIG_VEML6040) +=3D veml6040.o obj-$(CONFIG_VEML6046X00) +=3D veml6046x00.o diff --git a/drivers/iio/light/veml3328.c b/drivers/iio/light/veml3328.c new file mode 100644 index 000000000000..fdfa8fd1666b --- /dev/null +++ b/drivers/iio/light/veml3328.c @@ -0,0 +1,416 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Vishay VEML3328 RGBCIR light sensor driver + * + * Copyright (c) 2026 Joshua Crofts + * + * Datasheet: https://www.vishay.com/docs/84968/veml3328.pdf + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define VEML3328_REG_CONF 0x00 +#define VEML3328_REG_ID 0x0c +#define VEML3328_REG_DATA_C 0x04 +#define VEML3328_REG_DATA_R 0x05 +#define VEML3328_REG_DATA_G 0x06 +#define VEML3328_REG_DATA_B 0x07 +#define VEML3328_REG_DATA_IR 0x08 + +#define VEML3328_CONF_IT_MASK GENMASK(5, 4) +#define VEML3328_CONF_GAIN_MASK GENMASK(11, 10) + +#define VEML3328_MAX_IT_TIME (400 * USEC_PER_MSEC) + +#define VEML3328_ID_VAL 0x28 + +#define VEML3328_SHUTDOWN (BIT(0) | BIT(15)) + +struct veml3328_data { + struct regmap *regmap; +}; + +static const struct regmap_config veml3328_regmap_config =3D { + .name =3D "veml3328", + .reg_bits =3D 8, + .val_bits =3D 16, + .max_register =3D VEML3328_REG_ID, + .val_format_endian =3D REGMAP_ENDIAN_LITTLE, +}; + +#define VEML3328_CHAN_SPEC(_color, _addr) { \ + .type =3D IIO_INTENSITY, \ + .modified =3D 1, \ + .channel2 =3D IIO_MOD_LIGHT_##_color, \ + .info_mask_separate =3D BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_all =3D BIT(IIO_CHAN_INFO_INT_TIME) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .info_mask_shared_by_all_available =3D BIT(IIO_CHAN_INFO_INT_TIME) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .address =3D _addr, \ +} + +static const struct iio_chan_spec veml3328_channels[] =3D { + { + .type =3D IIO_LIGHT, + + .info_mask_separate =3D BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + .info_mask_shared_by_all =3D BIT(IIO_CHAN_INFO_INT_TIME), + .address =3D VEML3328_REG_DATA_G, + }, + VEML3328_CHAN_SPEC(CLEAR, VEML3328_REG_DATA_C), + VEML3328_CHAN_SPEC(RED, VEML3328_REG_DATA_R), + VEML3328_CHAN_SPEC(GREEN, VEML3328_REG_DATA_G), + VEML3328_CHAN_SPEC(BLUE, VEML3328_REG_DATA_B), + VEML3328_CHAN_SPEC(IR, VEML3328_REG_DATA_IR), +}; + +/* scale values per datasheet */ +static const int veml3328_scale_vals[][2] =3D { + { 0, 500000 }, + { 1, 0 }, + { 2, 0 }, + { 4, 0 }, +}; + +/* integration times in microseconds */ +static const int veml3328_it_times[][2] =3D { + { 0, 50 * USEC_PER_MSEC }, + { 0, 100 * USEC_PER_MSEC }, + { 0, 200 * USEC_PER_MSEC }, + { 0, 400 * USEC_PER_MSEC }, +}; + +static int veml3328_power_down(struct veml3328_data *data) +{ + return regmap_set_bits(data->regmap, VEML3328_REG_CONF, + VEML3328_SHUTDOWN); +} + +static int veml3328_power_up(struct veml3328_data *data) +{ + int ret; + + ret =3D regmap_clear_bits(data->regmap, VEML3328_REG_CONF, + VEML3328_SHUTDOWN); + if (ret) + return ret; + + /* + * Sleep for maximum integration time to ensure sensor is powered on + * correctly. + */ + fsleep(VEML3328_MAX_IT_TIME); + + return 0; +} + +static void veml3328_power_down_action(void *data) +{ + veml3328_power_down(data); +} + +static int veml3328_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct veml3328_data *data =3D iio_priv(indio_dev); + struct regmap *regmap =3D data->regmap; + struct device *dev =3D regmap_get_device(regmap); + unsigned int reg_val; + int ret; + int reg; + + PM_RUNTIME_ACQUIRE_IF_ENABLED_AUTOSUSPEND(dev, pm); + ret =3D PM_RUNTIME_ACQUIRE_ERR(&pm); + if (ret) + return ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret =3D regmap_read(regmap, chan->address, ®_val); + if (ret) + return ret; + + *val =3D reg_val; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_INT_TIME: + ret =3D regmap_read(regmap, VEML3328_REG_CONF, ®_val); + if (ret) + return ret; + + reg =3D FIELD_GET(VEML3328_CONF_IT_MASK, reg_val); + if (reg >=3D ARRAY_SIZE(veml3328_it_times)) + return -EINVAL; + + *val =3D veml3328_it_times[reg][0]; + *val2 =3D veml3328_it_times[reg][1]; + return IIO_VAL_INT_PLUS_MICRO; + + case IIO_CHAN_INFO_SCALE: + ret =3D regmap_read(regmap, VEML3328_REG_CONF, ®_val); + if (ret) + return ret; + + if (chan->type =3D=3D IIO_LIGHT) { + int it_inx, gain_inx; + int it_us, scale_u; + + it_inx =3D FIELD_GET(VEML3328_CONF_IT_MASK, reg_val); + gain_inx =3D FIELD_GET(VEML3328_CONF_GAIN_MASK, reg_val); + + if (it_inx >=3D ARRAY_SIZE(veml3328_it_times) || + gain_inx >=3D ARRAY_SIZE(veml3328_scale_vals)) + return -EINVAL; + + it_us =3D veml3328_it_times[it_inx][1]; + + /* + * Equation for calculating ambient light scale: + * Scale =3D 0.384 * (50000 / Current_IT) * (1x / Current_Gain) + */ + scale_u =3D 384 * USEC_PER_MSEC; + scale_u =3D scale_u * 50000 / it_us; + + switch (gain_inx) { + case 0: + scale_u *=3D 2; + break; + case 1: + break; + case 2: + scale_u /=3D 2; + break; + case 3: + scale_u /=3D 4; + break; + default: + return -EINVAL; + } + + *val =3D 0; + *val2 =3D scale_u; + + return IIO_VAL_INT_PLUS_MICRO; + } + + reg =3D FIELD_GET(VEML3328_CONF_GAIN_MASK, reg_val); + if (reg >=3D ARRAY_SIZE(veml3328_scale_vals)) + return -EINVAL; + + *val =3D veml3328_scale_vals[reg][0]; + *val2 =3D veml3328_scale_vals[reg][1]; + return IIO_VAL_INT_PLUS_MICRO; + + default: + return -EINVAL; + } +} + +static int veml3328_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, + long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + *length =3D ARRAY_SIZE(veml3328_it_times) * 2; + *vals =3D (const int *)veml3328_it_times; + *type =3D IIO_VAL_INT_PLUS_MICRO; + return IIO_AVAIL_LIST; + + case IIO_CHAN_INFO_SCALE: + *length =3D ARRAY_SIZE(veml3328_scale_vals) * 2; + *vals =3D (const int *)veml3328_scale_vals; + *type =3D IIO_VAL_INT_PLUS_MICRO; + return IIO_AVAIL_LIST; + + default: + return -EINVAL; + } +} + +static int veml3328_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct veml3328_data *data =3D iio_priv(indio_dev); + struct regmap *regmap =3D data->regmap; + struct device *dev =3D regmap_get_device(regmap); + int ret; + int i; + + PM_RUNTIME_ACQUIRE_IF_ENABLED_AUTOSUSPEND(dev, pm); + ret =3D PM_RUNTIME_ACQUIRE_ERR(&pm); + if (ret) + return ret; + + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + if (val !=3D 0) + return -EINVAL; + + for (i =3D 0; i < ARRAY_SIZE(veml3328_it_times); i++) { + if (veml3328_it_times[i][1] =3D=3D val2) + break; + } + + if (i =3D=3D ARRAY_SIZE(veml3328_it_times)) + return -EINVAL; + + return regmap_update_bits(regmap, VEML3328_REG_CONF, + VEML3328_CONF_IT_MASK, + FIELD_PREP(VEML3328_CONF_IT_MASK, i)); + + case IIO_CHAN_INFO_SCALE: + for (i =3D 0; i < ARRAY_SIZE(veml3328_scale_vals); i++) { + if (val =3D=3D veml3328_scale_vals[i][0] && + val2 =3D=3D veml3328_scale_vals[i][1]) + break; + } + + if (i =3D=3D ARRAY_SIZE(veml3328_scale_vals)) + return -EINVAL; + + return regmap_update_bits(regmap, VEML3328_REG_CONF, + VEML3328_CONF_GAIN_MASK, + FIELD_PREP(VEML3328_CONF_GAIN_MASK, i)); + + default: + return -EINVAL; + } +} + +static const struct iio_info veml3328_info =3D { + .read_raw =3D veml3328_read_raw, + .write_raw =3D veml3328_write_raw, + .read_avail =3D veml3328_read_avail, +}; + +static int veml3328_probe(struct i2c_client *client) +{ + struct device *dev =3D &client->dev; + struct veml3328_data *data; + struct iio_dev *indio_dev; + unsigned int reg_val; + int ret; + + indio_dev =3D devm_iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data =3D iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + + data->regmap =3D devm_regmap_init_i2c(client, &veml3328_regmap_config); + if (IS_ERR(data->regmap)) + return dev_err_probe(dev, PTR_ERR(data->regmap), + "Failed to initialize regmap\n"); + + ret =3D devm_regulator_get_enable(dev, "vdd"); + if (ret) + return dev_err_probe(dev, ret, "Failed to enable regulator\n"); + + ret =3D regmap_read(data->regmap, VEML3328_REG_ID, ®_val); + if (ret) + return dev_err_probe(dev, ret, "Failed to read ID register\n"); + + if ((reg_val & 0xff) !=3D VEML3328_ID_VAL) + dev_warn(dev, "Unknown device ID: 0x%02x\n", reg_val & 0xff); + + ret =3D veml3328_power_up(data); + if (ret) + return dev_err_probe(dev, ret, "Failed to power on sensor\n"); + + ret =3D devm_add_action_or_reset(dev, veml3328_power_down_action, data); + if (ret) + return dev_err_probe(dev, ret, "Failed to register teardown\n"); + + indio_dev->name =3D "veml3328"; + indio_dev->modes =3D INDIO_DIRECT_MODE; + indio_dev->info =3D &veml3328_info; + indio_dev->channels =3D veml3328_channels; + indio_dev->num_channels =3D ARRAY_SIZE(veml3328_channels); + + pm_runtime_set_active(dev); + pm_runtime_set_autosuspend_delay(dev, 2000); + pm_runtime_use_autosuspend(dev); + + ret =3D devm_pm_runtime_enable(dev); + if (ret) + return dev_err_probe(dev, ret, "Failed to enable runtime PM\n"); + + return devm_iio_device_register(dev, indio_dev); +} + +static int veml3328_runtime_suspend(struct device *dev) +{ + struct veml3328_data *data =3D iio_priv(dev_get_drvdata(dev)); + int ret; + + ret =3D veml3328_power_down(data); + if (ret) + dev_err(dev, "Failed to suspend: %d\n", ret); + + return ret; +} + +static int veml3328_runtime_resume(struct device *dev) +{ + struct veml3328_data *data =3D iio_priv(dev_get_drvdata(dev)); + int ret; + + ret =3D veml3328_power_up(data); + if (ret) + dev_err(dev, "Failed to resume: %d\n", ret); + + return ret; +} + +static DEFINE_RUNTIME_DEV_PM_OPS(veml3328_pm_ops, + veml3328_runtime_suspend, + veml3328_runtime_resume, + NULL); + +static const struct of_device_id veml3328_of_match[] =3D { + { .compatible =3D "vishay,veml3328" }, + { } +}; +MODULE_DEVICE_TABLE(of, veml3328_of_match); + +static const struct i2c_device_id veml3328_id[] =3D { + { .name =3D "veml3328" }, + { } +}; +MODULE_DEVICE_TABLE(i2c, veml3328_id); + +static struct i2c_driver veml3328_driver =3D { + .driver =3D { + .name =3D "veml3328", + .of_match_table =3D veml3328_of_match, + .pm =3D pm_ptr(&veml3328_pm_ops), + }, + .probe =3D veml3328_probe, + .id_table =3D veml3328_id, +}; +module_i2c_driver(veml3328_driver); + +MODULE_AUTHOR("Joshua Crofts "); +MODULE_DESCRIPTION("VEML3328 RGBCIR Light Sensor"); +MODULE_LICENSE("GPL"); --=20 2.34.1