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0e6f6871a1
Some types of ST Sensors can be connected to the same IRQ line as other peripherals using open drain. Add a device tree binding and a sensor data property to flip the right bit in the interrupt control register to enable open drain mode on the INT line. If the line is set to be open drain, also tag on IRQF_SHARED to the IRQ flags when requesting the interrupt, as the whole point of using open drain interrupt lines is to share them with more than one peripheral (wire-or). Cc: devicetree@vger.kernel.org Cc: Giuseppe Barba <giuseppe.barba@st.com> Cc: Denis Ciocca <denis.ciocca@st.com> Acked-by: Rob Herring <rob@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
26 lines
675 B
C
26 lines
675 B
C
/*
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* STMicroelectronics sensors platform-data driver
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*
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* Copyright 2013 STMicroelectronics Inc.
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*
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* Denis Ciocca <denis.ciocca@st.com>
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*
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* Licensed under the GPL-2.
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*/
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#ifndef ST_SENSORS_PDATA_H
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#define ST_SENSORS_PDATA_H
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/**
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* struct st_sensors_platform_data - Platform data for the ST sensors
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* @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2).
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* Available only for accelerometer and pressure sensors.
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* Accelerometer DRDY on LSM330 available only on pin 1 (see datasheet).
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* @open_drain: set the interrupt line to be open drain if possible.
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*/
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struct st_sensors_platform_data {
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u8 drdy_int_pin;
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bool open_drain;
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};
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#endif /* ST_SENSORS_PDATA_H */
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