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([5.2.193.191]) by smtp.gmail.com with ESMTPSA id j19sm1390060edw.43.2021.06.24.01.05.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Jun 2021 01:05:03 -0700 (PDT) From: Alexandru Ardelean To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: jic23@kernel.org, Alexandru Ardelean Subject: [PATCH] iio: accel: adxl345: convert probe to device-managed functions Date: Thu, 24 Jun 2021 11:04:40 +0300 Message-Id: <20210624080441.8710-1-aardelean@deviqon.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org This driver has two parts, one for i2c and one for spi, since the chip can operate with both wire protocols. The core file has a common adxl345_core_remove() function which puts the chip into a powerdown state. This can be implemented with a devm_add_action_or_reset() hook. Doing that means we can register the IIO device with devm_iio_device_register() and get rid of the adxl345_core_remove() function. The dev_set_drvdata() call can be removed as there is no other user of this private data anymore. Signed-off-by: Alexandru Ardelean --- drivers/iio/accel/adxl345.h | 1 - drivers/iio/accel/adxl345_core.c | 29 +++++++++-------------------- drivers/iio/accel/adxl345_i2c.c | 6 ------ drivers/iio/accel/adxl345_spi.c | 6 ------ 4 files changed, 9 insertions(+), 33 deletions(-) diff --git a/drivers/iio/accel/adxl345.h b/drivers/iio/accel/adxl345.h index 384497776b67..af0fdd02c4f2 100644 --- a/drivers/iio/accel/adxl345.h +++ b/drivers/iio/accel/adxl345.h @@ -15,6 +15,5 @@ enum adxl345_device_type { int adxl345_core_probe(struct device *dev, struct regmap *regmap, enum adxl345_device_type type, const char *name); -int adxl345_core_remove(struct device *dev); #endif /* _ADXL345_H_ */ diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c index 312866530065..4b275051ef61 100644 --- a/drivers/iio/accel/adxl345_core.c +++ b/drivers/iio/accel/adxl345_core.c @@ -208,6 +208,11 @@ static const struct iio_info adxl345_info = { .write_raw_get_fmt = adxl345_write_raw_get_fmt, }; +static void adxl345_powerdown(void *regmap) +{ + regmap_write(regmap, ADXL345_REG_POWER_CTL, ADXL345_POWER_CTL_STANDBY); +} + int adxl345_core_probe(struct device *dev, struct regmap *regmap, enum adxl345_device_type type, const char *name) { @@ -233,7 +238,6 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, return -ENOMEM; data = iio_priv(indio_dev); - dev_set_drvdata(dev, indio_dev); data->regmap = regmap; data->type = type; /* Enable full-resolution mode */ @@ -260,29 +264,14 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap, return ret; } - ret = iio_device_register(indio_dev); - if (ret < 0) { - dev_err(dev, "iio_device_register failed: %d\n", ret); - regmap_write(data->regmap, ADXL345_REG_POWER_CTL, - ADXL345_POWER_CTL_STANDBY); - } + ret = devm_add_action_or_reset(dev, adxl345_powerdown, data->regmap); + if (ret < 0) + return ret; - return ret; + return devm_iio_device_register(dev, indio_dev); } EXPORT_SYMBOL_GPL(adxl345_core_probe); -int adxl345_core_remove(struct device *dev) -{ - struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct adxl345_data *data = iio_priv(indio_dev); - - iio_device_unregister(indio_dev); - - return regmap_write(data->regmap, ADXL345_REG_POWER_CTL, - ADXL345_POWER_CTL_STANDBY); -} -EXPORT_SYMBOL_GPL(adxl345_core_remove); - MODULE_AUTHOR("Eva Rachel Retuya "); MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer core driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/accel/adxl345_i2c.c b/drivers/iio/accel/adxl345_i2c.c index 1561364ae296..a431cba216e6 100644 --- a/drivers/iio/accel/adxl345_i2c.c +++ b/drivers/iio/accel/adxl345_i2c.c @@ -38,11 +38,6 @@ static int adxl345_i2c_probe(struct i2c_client *client, id->name); } -static int adxl345_i2c_remove(struct i2c_client *client) -{ - return adxl345_core_remove(&client->dev); -} - static const struct i2c_device_id adxl345_i2c_id[] = { { "adxl345", ADXL345 }, { "adxl375", ADXL375 }, @@ -65,7 +60,6 @@ static struct i2c_driver adxl345_i2c_driver = { .of_match_table = adxl345_of_match, }, .probe = adxl345_i2c_probe, - .remove = adxl345_i2c_remove, .id_table = adxl345_i2c_id, }; diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c index da4591c7ef23..ea559ac2e87d 100644 --- a/drivers/iio/accel/adxl345_spi.c +++ b/drivers/iio/accel/adxl345_spi.c @@ -42,11 +42,6 @@ static int adxl345_spi_probe(struct spi_device *spi) return adxl345_core_probe(&spi->dev, regmap, id->driver_data, id->name); } -static int adxl345_spi_remove(struct spi_device *spi) -{ - return adxl345_core_remove(&spi->dev); -} - static const struct spi_device_id adxl345_spi_id[] = { { "adxl345", ADXL345 }, { "adxl375", ADXL375 }, @@ -69,7 +64,6 @@ static struct spi_driver adxl345_spi_driver = { .of_match_table = adxl345_of_match, }, .probe = adxl345_spi_probe, - .remove = adxl345_spi_remove, .id_table = adxl345_spi_id, };