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Fri, 07 Aug 2026 20:59:04 -0700 (PDT) From: Kurt Borja Date: Fri, 07 Aug 2026 22:58:30 -0500 Subject: [PATCH v3 8/9] iio: adc: ti-ads1262: support REFOUT and VBIAS regulators 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: 7bit Message-Id: <20260807-ads126x-v3-8-f89925d72792@gmail.com> References: <20260807-ads126x-v3-0-f89925d72792@gmail.com> In-Reply-To: <20260807-ads126x-v3-0-f89925d72792@gmail.com> To: Kurt Borja , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Linus Walleij , Bartosz Golaszewski , David Lechner Cc: =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, Jonathan Cameron X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=3933; i=kuurtb@gmail.com; h=from:subject:message-id; bh=eW+qHE1g1yIqP4HICEETLIrGwlRb8wRg2/fNm4tOAkU=; b=owGbwMvMwCUmluBs8WX+lTTG02pJDFllKyvO6WdGbrvTt2BR5cN5Mx19G2uXd2kfsDQ9uNtu6 duN6zxPdZSyMIhxMciKKbK0Jyz69igq763fgdD7MHNYmUCGMHBxCsBEAsMYGWY8mVJwzVUn/DHT LqvkqRaWGd1Pq++k78w+YcXNGHs46ycjw8IDy84s/ThLcmFpcsvyOY6P7mgryF9Y03DaqO+q0Zn krRwA X-Developer-Key: i=kuurtb@gmail.com; a=openpgp; fpr=54D3BE170AEF777983C3C63B57E3B6585920A69A Register the "refout" and "vbias" regulators to be able to use them as common mode supplies. Signed-off-by: Kurt Borja --- drivers/iio/adc/Kconfig | 1 + drivers/iio/adc/ti-ads1262.c | 90 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 91 insertions(+) diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index b9b561be8347..e5206438ac90 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -1845,6 +1845,7 @@ config TI_ADS1262 tristate "Texas Instruments ADS1262" depends on SPI select REGMAP + select REGULATOR select IIO_BUFFER select IIO_TRIGGERED_BUFFER help diff --git a/drivers/iio/adc/ti-ads1262.c b/drivers/iio/adc/ti-ads1262.c index 24a7ecb9fbd4..533574169b04 100644 --- a/drivers/iio/adc/ti-ads1262.c +++ b/drivers/iio/adc/ti-ads1262.c @@ -26,6 +26,7 @@ #include #include #include +#include #include #include #include @@ -961,6 +962,91 @@ static irqreturn_t ads1262_irq_handler(int irq, void *dev_id) return IRQ_HANDLED; } +static int ads1262_regulator_enable(struct regulator_dev *rdev) +{ + struct ads1262 *st = rdev_get_drvdata(rdev); + + guard(mutex)(&st->xfer_lock); + + return regmap_set_bits(st->regmap, ADS1262_POWER_REG, + ADS1262_POWER_VBIAS_MASK); +} + +static int ads1262_regulator_disable(struct regulator_dev *rdev) +{ + struct ads1262 *st = rdev_get_drvdata(rdev); + + guard(mutex)(&st->xfer_lock); + + return regmap_clear_bits(st->regmap, ADS1262_POWER_REG, + ADS1262_POWER_VBIAS_MASK); +} + +static int ads1262_regulator_is_enabled(struct regulator_dev *rdev) +{ + struct ads1262 *st = rdev_get_drvdata(rdev); + unsigned int val; + int ret; + + guard(mutex)(&st->xfer_lock); + + ret = regmap_read(st->regmap, ADS1262_POWER_REG, &val); + if (ret) + return ret; + + return field_get(ADS1262_POWER_VBIAS_MASK, val); +} + +static const struct regulator_ops ads1262_vbias_regulator_ops = { + .enable = ads1262_regulator_enable, + .disable = ads1262_regulator_disable, + .is_enabled = ads1262_regulator_is_enabled, +}; + +static const struct regulator_ops ads1262_refout_regulator_ops = { }; + +static const struct regulator_desc ads1262_vbias_regulator_desc = { + .name = "vbias", + .of_match = "vbias", + .regulators_node = "regulators", + .supply_name = "avdd", + .ops = &ads1262_vbias_regulator_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, +}; + +static const struct regulator_desc ads1262_refout_regulator_desc = { + .name = "refout", + .of_match = "refout", + .regulators_node = "regulators", + .supply_name = "avdd", + .n_voltages = 1, + .fixed_uV = 2500000, + .ops = &ads1262_refout_regulator_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, +}; + +static int ads1262_register_regulators(struct ads1262 *st) +{ + struct device *dev = &st->spi->dev; + struct regulator_config config = { + .dev = dev, + .driver_data = st, + }; + struct regulator_dev *rdev; + + rdev = devm_regulator_register(dev, &ads1262_refout_regulator_desc, + &config); + if (IS_ERR(rdev)) + return PTR_ERR(rdev); + + rdev = devm_regulator_register(dev, &ads1262_vbias_regulator_desc, + &config); + + return PTR_ERR_OR_ZERO(rdev); +} + static int ads1262_dev_configure(struct ads1262 *st) { struct device *dev = &st->spi->dev; @@ -1707,6 +1793,10 @@ static int ads1262_spi_probe(struct spi_device *spi) if (ret) return dev_err_probe(dev, ret, "failed to configure device\n"); + ret = ads1262_register_regulators(st); + if (ret) + return ret; + ret = devm_iio_triggered_buffer_setup(dev, indio_dev, iio_pollfunc_store_time, ads1262_trigger_handler, -- 2.55.0