From 0e6f6871a1591f4bb0971809c45bc91a991f1967 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 14 Apr 2016 10:45:21 +0200 Subject: iio: st_sensors: support open drain mode 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 Cc: Denis Ciocca Acked-by: Rob Herring Signed-off-by: Linus Walleij Signed-off-by: Jonathan Cameron --- include/linux/platform_data/st_sensors_pdata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/platform_data') diff --git a/include/linux/platform_data/st_sensors_pdata.h b/include/linux/platform_data/st_sensors_pdata.h index 753839187ba0..79b0e4cdb814 100644 --- a/include/linux/platform_data/st_sensors_pdata.h +++ b/include/linux/platform_data/st_sensors_pdata.h @@ -16,9 +16,11 @@ * @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2). * Available only for accelerometer and pressure sensors. * Accelerometer DRDY on LSM330 available only on pin 1 (see datasheet). + * @open_drain: set the interrupt line to be open drain if possible. */ struct st_sensors_platform_data { u8 drdy_int_pin; + bool open_drain; }; #endif /* ST_SENSORS_PDATA_H */ -- cgit v1.2.3 From eb3798463f71afc77abd25b2f62708be06f7173b Mon Sep 17 00:00:00 2001 From: Gregor Boirie Date: Wed, 20 Apr 2016 19:23:45 +0200 Subject: iio:imu:mpu6050: enhance mounting matrix support Add a new rotation matrix sysfs attribute compliant with IIO core mounting matrix API. Matrix is retrieved from "in_anglvel_mount_matrix" and "in_accel_mount_matrix" sysfs attributes. It is declared into mpu6050 DTS entry as a "mount-matrix" property. Old interface is kept for backward userspace compatibility and may be retrieved from legacy platform_data mechanism only. Signed-off-by: Gregor Boirie Acked-by: Rob Herring Signed-off-by: Jonathan Cameron --- include/linux/platform_data/invensense_mpu6050.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'include/linux/platform_data') diff --git a/include/linux/platform_data/invensense_mpu6050.h b/include/linux/platform_data/invensense_mpu6050.h index ad3aa7b95f35..554b59801aa8 100644 --- a/include/linux/platform_data/invensense_mpu6050.h +++ b/include/linux/platform_data/invensense_mpu6050.h @@ -16,13 +16,16 @@ /** * struct inv_mpu6050_platform_data - Platform data for the mpu driver - * @orientation: Orientation matrix of the chip + * @orientation: Orientation matrix of the chip (deprecated in favor of + * mounting matrix retrieved from device-tree) * * Contains platform specific information on how to configure the MPU6050 to * work on this platform. The orientation matricies are 3x3 rotation matricies * that are applied to the data to rotate from the mounting orientation to the * platform orientation. The values must be one of 0, 1, or -1 and each row and * column should have exactly 1 non-zero value. + * + * Deprecated in favor of mounting matrix retrieved from device-tree. */ struct inv_mpu6050_platform_data { __s8 orientation[9]; -- cgit v1.2.3