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Commit 66533b48 authored by Jonathan Cameron's avatar Jonathan Cameron Committed by Greg Kroah-Hartman
Browse files

Staging: IIO: lis3l02dq accelerometer core support 



A later patch in the series will add data ready triggering
and ring buffer support.

This core patch provides an event interface and sysfs
based reading of values.

Signed-off-by: default avatarJonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 78632b60

drivers/staging/iio/Kconfig

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Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ menuconfig IIO 
	  Documentation/industrialio for more information.

if IIO



source "drivers/staging/iio/accel/Kconfig"

source "drivers/staging/iio/adc/Kconfig"

source "drivers/staging/iio/light/Kconfig"

drivers/staging/iio/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -5,5 +5,6 @@ 
obj-$(CONFIG_IIO) += industrialio.o

industrialio-y := industrialio-core.o



obj-y += accel/

obj-y += adc/

obj-y += light/
 
 No newline at end of file

drivers/staging/iio/accel/Kconfig

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#

# Accelerometer drivers

#

comment "Accelerometers"



config LIS3L02DQ

	tristate "ST Microelectronics LIS3L02DQ Accelerometer Driver"

	depends on SPI

	help

	  Say yes here to build SPI support for the ST microelectronics

	  accelerometer. The driver supplies direct access via sysfs files

	  and an event interface via a character device.

drivers/staging/iio/accel/Makefile

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#

# Makefile for industrial I/O accelerometer drivers

#

lis3l02dq-y		:= lis3l02dq_core.o

obj-$(CONFIG_LIS3L02DQ)	+= lis3l02dq.o

drivers/staging/iio/accel/accel.h

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+167 −0
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#include "../sysfs.h"



/* Accelerometer types of attribute */



#define IIO_DEV_ATTR_ACCEL_X_OFFSET(_mode, _show, _store, _addr)	\

	IIO_DEVICE_ATTR(accel_x_offset, _mode, _show, _store, _addr)



#define IIO_DEV_ATTR_ACCEL_Y_OFFSET(_mode, _show, _store, _addr)	\

	IIO_DEVICE_ATTR(accel_y_offset, _mode, _show, _store, _addr)



#define IIO_DEV_ATTR_ACCEL_Z_OFFSET(_mode, _show, _store, _addr)	\

	IIO_DEVICE_ATTR(accel_z_offset, _mode, _show, _store, _addr)



#define IIO_DEV_ATTR_ACCEL_X_GAIN(_mode, _show, _store, _addr)		\

	IIO_DEVICE_ATTR(accel_x_gain, _mode, _show, _store, _addr)



#define IIO_DEV_ATTR_ACCEL_Y_GAIN(_mode, _show, _store, _addr)		\

	IIO_DEVICE_ATTR(accel_y_gain, _mode, _show, _store, _addr)



#define IIO_DEV_ATTR_ACCEL_Z_GAIN(_mode, _show, _store, _addr)		\

	IIO_DEVICE_ATTR(accel_z_gain, _mode, _show, _store, _addr)



#define IIO_DEV_ATTR_ACCEL_X(_show, _addr)			\

	IIO_DEVICE_ATTR(accel_x, S_IRUGO, _show, NULL, _addr)



#define IIO_DEV_ATTR_ACCEL_Y(_show, _addr)			\

	IIO_DEVICE_ATTR(accel_y, S_IRUGO, _show, NULL, _addr)



#define IIO_DEV_ATTR_ACCEL_Z(_show, _addr)			\

	IIO_DEVICE_ATTR(accel_z, S_IRUGO, _show, NULL, _addr)



/* Thresholds are somewhat chip dependent - may need quite a few defs here */

/* For unified thesholds (shared across all directions */



/**

 * IIO_DEV_ATTR_ACCEL_THRESH: unified threshold

 * @_mode: read/write

 * @_show: read detector threshold value

 * @_store: write detector theshold value

 * @_addr: driver specific data, typically a register address

 *

 * This one is for cases where as single threshold covers all directions

 **/

#define IIO_DEV_ATTR_ACCEL_THRESH(_mode, _show, _store, _addr)	\

	IIO_DEVICE_ATTR(thresh, _mode, _show, _store, _addr)



/**

 * IIO_DEV_ATTR_ACCEL_THRESH_X: independant direction threshold, x axis

 * @_mode: readable / writable

 * @_show: read x axis detector theshold value

 * @_store: write x axis detector threshold value

 * @_addr: device driver dependant, typically a register address

 **/

#define IIO_DEV_ATTR_ACCEL_THRESH_X(_mode, _show, _store, _addr)	\

	IIO_DEVICE_ATTR(thresh_accel_x, _mode, _show, _store, _addr)



#define IIO_DEV_ATTR_ACCEL_THRESH_Y(_mode, _show, _store, _addr)	\

	IIO_DEVICE_ATTR(thresh_accel_y, _mode, _show, _store, _addr)



#define IIO_DEV_ATTR_ACCEL_THRESH_Z(_mode, _show, _store, _addr)	\

	IIO_DEVICE_ATTR(thresh_accel_z, _mode, _show, _store, _addr)





/**

 * IIO_EVENT_ATTR_ACCEL_X_HIGH: threshold event, x acceleration

 * @_show: read x acceleration high threshold

 * @_store: write x acceleration high threshold

 * @_mask: device dependant, typically a bit mask

 * @_handler: the iio_handler associated with this attribute

 **/

#define IIO_EVENT_ATTR_ACCEL_X_HIGH(_show, _store, _mask, _handler)	\

	IIO_EVENT_ATTR(accel_x_high, _show, _store, _mask, _handler)



/**

 * IIO_EVENT_ATTR_ACCEL_X_HIGH_SH: threshold event, x accel high, shared handler

 * @_evlist: event list used to share the handler

 * @_show: attribute read

 * @_store: attribute write

 * @_mask: driver specific data, typically a bit mask

 **/

#define IIO_EVENT_ATTR_ACCEL_X_HIGH_SH(_evlist, _show, _store, _mask)	\

	IIO_EVENT_ATTR_SH(accel_x_high, _evlist, _show, _store, _mask)



/**

 * IIO_EVENT_CODE_ACCEL_X_HIGH - event code for x axis high accel threshold

 **/

#define IIO_EVENT_CODE_ACCEL_X_HIGH IIO_EVENT_CODE_ACCEL_BASE



#define IIO_EVENT_ATTR_ACCEL_Y_HIGH(_show, _store, _mask, _handler)	\

	IIO_EVENT_ATTR(accel_y_high, _show, _store, _mask, _handler)



#define IIO_EVENT_ATTR_ACCEL_Y_HIGH_SH(_evlist, _show, _store, _mask)	\

	IIO_EVENT_ATTR_SH(accel_y_high, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_Y_HIGH (IIO_EVENT_CODE_ACCEL_BASE + 1)



#define IIO_EVENT_ATTR_ACCEL_Z_HIGH(_show, _store, _mask, _handler)	\

	IIO_EVENT_ATTR(accel_z_high, _show, _store, _mask, _handler)



#define IIO_EVENT_ATTR_ACCEL_Z_HIGH_SH(_evlist, _show, _store, _mask)	\

	IIO_EVENT_ATTR_SH(accel_z_high, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_Z_HIGH (IIO_EVENT_CODE_ACCEL_BASE + 2)



#define IIO_EVENT_ATTR_ACCEL_X_LOW(_show, _store, _mask, _handler)	\

	IIO_EVENT_ATTR(accel_x_low, _show, _store, _mask, _handler)



#define IIO_EVENT_ATTR_ACCEL_X_LOW_SH(_evlist, _show, _store, _mask)	\

	IIO_EVENT_ATTR_SH(accel_x_low, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_X_LOW (IIO_EVENT_CODE_ACCEL_BASE + 3)



#define IIO_EVENT_ATTR_ACCEL_Y_LOW(_show, _store, _mask, _handler) \

	IIO_EVENT_ATTR(accel_y_low, _show, _store, _mask, _handler)



#define IIO_EVENT_ATTR_ACCEL_Y_LOW_SH(_evlist, _show, _store, _mask)\

	IIO_EVENT_ATTR_SH(accel_y_low, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_Y_LOW (IIO_EVENT_CODE_ACCEL_BASE + 4)



#define IIO_EVENT_ATTR_ACCEL_Z_LOW(_show, _store, _mask, _handler)	\

	IIO_EVENT_ATTR(accel_z_low, _show, _store, _mask, _handler)



#define IIO_EVENT_ATTR_ACCEL_Z_LOW_SH(_evlist, _show, _store, _mask)	\

	IIO_EVENT_ATTR_SH(accel_z_low, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_Z_LOW (IIO_EVENT_CODE_ACCEL_BASE + 5)



#define IIO_EVENT_ATTR_FREE_FALL_DETECT(_show, _store, _mask, _handler)	\

	IIO_EVENT_ATTR(free_fall, _show, _store, _mask, _handler)



#define IIO_EVENT_ATTR_FREE_FALL_DETECT_SH(_evlist, _show, _store, _mask) \

	IIO_EVENT_ATTR_SH(free_fall, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_FREE_FALL (IIO_EVENT_CODE_ACCEL_BASE + 6)





#define IIO_EVENT_ATTR_ACCEL_X_ROC_HIGH_SH(_evlist, _show, _store, _mask) \

	IIO_EVENT_ATTR_SH(accel_x_roc_high, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_X_ROC_HIGH (IIO_EVENT_CODE_ACCEL_BASE + 10)



#define IIO_EVENT_ATTR_ACCEL_X_ROC_LOW_SH(_evlist, _show, _store, _mask) \

	IIO_EVENT_ATTR_SH(accel_x_roc_low, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_X_ROC_LOW (IIO_EVENT_CODE_ACCEL_BASE + 11)



#define IIO_EVENT_ATTR_ACCEL_Y_ROC_HIGH_SH(_evlist, _show, _store, _mask) \

	IIO_EVENT_ATTR_SH(accel_y_roc_high, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_Y_ROC_HIGH (IIO_EVENT_CODE_ACCEL_BASE + 12)



#define IIO_EVENT_ATTR_ACCEL_Y_ROC_LOW_SH(_evlist, _show, _store, _mask) \

	IIO_EVENT_ATTR_SH(accel_y_roc_low, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_Y_ROC_LOW (IIO_EVENT_CODE_ACCEL_BASE + 13)



#define IIO_EVENT_ATTR_ACCEL_Z_ROC_HIGH_SH(_evlist, _show, _store, _mask) \

	IIO_EVENT_ATTR_SH(accel_z_roc_high, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_Z_ROC_HIGH (IIO_EVENT_CODE_ACCEL_BASE + 14)



#define IIO_EVENT_ATTR_ACCEL_Z_ROC_LOW_SH(_evlist, _show, _store, _mask) \

	IIO_EVENT_ATTR_SH(accel_z_roc_low, _evlist, _show, _store, _mask)



#define IIO_EVENT_CODE_ACCEL_Z_ROC_LOW (IIO_EVENT_CODE_ACCEL_BASE + 15)