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Commit Graph

Author	SHA1	Message	Date
Ivan T. Ivanov	937125aca0	iio: adc: spmi-vadc: Fix overflow in output value normalization With 'dx' equal to 0.625V and 15 bit ADC, calculations overflow when difference against GND is ~20% of the ADC range. Fix this. Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>	2015-04-18 17:40:04 +01:00
Stanimir Varbanov	0917de94c0	iio: vadc: Qualcomm SPMI PMIC voltage ADC driver The voltage ADC is peripheral of Qualcomm SPMI PMIC chips. It has 15bits resolution and register space inside PMIC accessible across SPMI bus. The vadc driver registers itself through IIO interface. Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>	2015-01-28 18:42:08 +00:00

Author

SHA1

Message

Date

Ivan T. Ivanov

937125aca0

iio: adc: spmi-vadc: Fix overflow in output value normalization

With 'dx' equal to 0.625V and 15 bit ADC, calculations overflow
when difference against GND is ~20% of the ADC range. Fix this.

Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

2015-04-18 17:40:04 +01:00

Stanimir Varbanov

0917de94c0

iio: vadc: Qualcomm SPMI PMIC voltage ADC driver

The voltage ADC is peripheral of Qualcomm SPMI PMIC chips. It has
15bits resolution and register space inside PMIC accessible across
SPMI bus.

The vadc driver registers itself through IIO interface.

Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

2015-01-28 18:42:08 +00:00

2 Commits