1744 lines
42 KiB
C
1744 lines
42 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* KXCJK-1013 3-axis accelerometer driver
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* Copyright (c) 2014, Intel Corporation.
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*/
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/bitops.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/acpi.h>
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#include <linux/pm.h>
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#include <linux/pm_runtime.h>
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#include <linux/regulator/consumer.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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#include <linux/iio/buffer.h>
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#include <linux/iio/trigger.h>
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#include <linux/iio/events.h>
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#include <linux/iio/trigger_consumer.h>
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#include <linux/iio/triggered_buffer.h>
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#include <linux/iio/accel/kxcjk_1013.h>
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#define KXCJK1013_DRV_NAME "kxcjk1013"
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#define KXCJK1013_IRQ_NAME "kxcjk1013_event"
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#define KXTF9_REG_HP_XOUT_L 0x00
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#define KXTF9_REG_HP_XOUT_H 0x01
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#define KXTF9_REG_HP_YOUT_L 0x02
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#define KXTF9_REG_HP_YOUT_H 0x03
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#define KXTF9_REG_HP_ZOUT_L 0x04
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#define KXTF9_REG_HP_ZOUT_H 0x05
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#define KXCJK1013_REG_XOUT_L 0x06
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/*
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* From low byte X axis register, all the other addresses of Y and Z can be
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* obtained by just applying axis offset. The following axis defines are just
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* provide clarity, but not used.
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*/
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#define KXCJK1013_REG_XOUT_H 0x07
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#define KXCJK1013_REG_YOUT_L 0x08
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#define KXCJK1013_REG_YOUT_H 0x09
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#define KXCJK1013_REG_ZOUT_L 0x0A
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#define KXCJK1013_REG_ZOUT_H 0x0B
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#define KXCJK1013_REG_DCST_RESP 0x0C
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#define KXCJK1013_REG_WHO_AM_I 0x0F
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#define KXTF9_REG_TILT_POS_CUR 0x10
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#define KXTF9_REG_TILT_POS_PREV 0x11
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#define KXTF9_REG_INT_SRC1 0x15
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#define KXTF9_REG_INT_SRC2 0x16
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#define KXCJK1013_REG_INT_SRC1 0x16
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#define KXCJK1013_REG_INT_SRC2 0x17
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#define KXCJK1013_REG_STATUS_REG 0x18
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#define KXCJK1013_REG_INT_REL 0x1A
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#define KXCJK1013_REG_CTRL1 0x1B
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#define KXTF9_REG_CTRL2 0x1C
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#define KXTF9_REG_CTRL3 0x1D
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#define KXCJK1013_REG_CTRL2 0x1D
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#define KXCJK1013_REG_INT_CTRL1 0x1E
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#define KXCJK1013_REG_INT_CTRL2 0x1F
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#define KXTF9_REG_INT_CTRL3 0x20
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#define KXCJK1013_REG_DATA_CTRL 0x21
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#define KXTF9_REG_TILT_TIMER 0x28
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#define KXCJK1013_REG_WAKE_TIMER 0x29
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#define KXTF9_REG_TDT_TIMER 0x2B
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#define KXTF9_REG_TDT_THRESH_H 0x2C
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#define KXTF9_REG_TDT_THRESH_L 0x2D
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#define KXTF9_REG_TDT_TAP_TIMER 0x2E
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#define KXTF9_REG_TDT_TOTAL_TIMER 0x2F
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#define KXTF9_REG_TDT_LATENCY_TIMER 0x30
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#define KXTF9_REG_TDT_WINDOW_TIMER 0x31
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#define KXCJK1013_REG_SELF_TEST 0x3A
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#define KXTF9_REG_WAKE_THRESH 0x5A
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#define KXTF9_REG_TILT_ANGLE 0x5C
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#define KXTF9_REG_HYST_SET 0x5F
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#define KXCJK1013_REG_WAKE_THRES 0x6A
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/* Everything up to 0x11 is equal to KXCJK1013/KXTF9 above */
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#define KX023_REG_INS1 0x12
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#define KX023_REG_INS2 0x13
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#define KX023_REG_INS3 0x14
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#define KX023_REG_STAT 0x15
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#define KX023_REG_INT_REL 0x17
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#define KX023_REG_CNTL1 0x18
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#define KX023_REG_CNTL2 0x19
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#define KX023_REG_CNTL3 0x1A
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#define KX023_REG_ODCNTL 0x1B
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#define KX023_REG_INC1 0x1C
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#define KX023_REG_INC2 0x1D
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#define KX023_REG_INC3 0x1E
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#define KX023_REG_INC4 0x1F
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#define KX023_REG_INC5 0x20
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#define KX023_REG_INC6 0x21
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#define KX023_REG_TILT_TIMER 0x22
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#define KX023_REG_WUFC 0x23
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#define KX023_REG_TDTRC 0x24
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#define KX023_REG_TDTC 0x25
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#define KX023_REG_TTH 0x26
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#define KX023_REG_TTL 0x27
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#define KX023_REG_FTD 0x28
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#define KX023_REG_STD 0x29
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#define KX023_REG_TLT 0x2A
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#define KX023_REG_TWS 0x2B
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#define KX023_REG_ATH 0x30
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#define KX023_REG_TILT_ANGLE_LL 0x32
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#define KX023_REG_TILT_ANGLE_HL 0x33
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#define KX023_REG_HYST_SET 0x34
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#define KX023_REG_LP_CNTL 0x35
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#define KX023_REG_BUF_CNTL1 0x3A
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#define KX023_REG_BUF_CNTL2 0x3B
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#define KX023_REG_BUF_STATUS_1 0x3C
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#define KX023_REG_BUF_STATUS_2 0x3D
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#define KX023_REG_BUF_CLEAR 0x3E
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#define KX023_REG_BUF_READ 0x3F
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#define KX023_REG_SELF_TEST 0x60
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#define KXCJK1013_REG_CTRL1_BIT_PC1 BIT(7)
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#define KXCJK1013_REG_CTRL1_BIT_RES BIT(6)
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#define KXCJK1013_REG_CTRL1_BIT_DRDY BIT(5)
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#define KXCJK1013_REG_CTRL1_BIT_GSEL1 BIT(4)
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#define KXCJK1013_REG_CTRL1_BIT_GSEL0 BIT(3)
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#define KXCJK1013_REG_CTRL1_BIT_WUFE BIT(1)
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#define KXCJK1013_REG_INT_CTRL1_BIT_IEU BIT(2) /* KXTF9 */
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#define KXCJK1013_REG_INT_CTRL1_BIT_IEL BIT(3)
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#define KXCJK1013_REG_INT_CTRL1_BIT_IEA BIT(4)
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#define KXCJK1013_REG_INT_CTRL1_BIT_IEN BIT(5)
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#define KXTF9_REG_TILT_BIT_LEFT_EDGE BIT(5)
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#define KXTF9_REG_TILT_BIT_RIGHT_EDGE BIT(4)
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#define KXTF9_REG_TILT_BIT_LOWER_EDGE BIT(3)
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#define KXTF9_REG_TILT_BIT_UPPER_EDGE BIT(2)
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#define KXTF9_REG_TILT_BIT_FACE_DOWN BIT(1)
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#define KXTF9_REG_TILT_BIT_FACE_UP BIT(0)
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#define KXCJK1013_DATA_MASK_12_BIT 0x0FFF
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#define KXCJK1013_MAX_STARTUP_TIME_US 100000
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#define KXCJK1013_SLEEP_DELAY_MS 2000
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#define KXCJK1013_REG_INT_SRC1_BIT_TPS BIT(0) /* KXTF9 */
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#define KXCJK1013_REG_INT_SRC1_BIT_WUFS BIT(1)
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#define KXCJK1013_REG_INT_SRC1_MASK_TDTS (BIT(2) | BIT(3)) /* KXTF9 */
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#define KXCJK1013_REG_INT_SRC1_TAP_NONE 0
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#define KXCJK1013_REG_INT_SRC1_TAP_SINGLE BIT(2)
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#define KXCJK1013_REG_INT_SRC1_TAP_DOUBLE BIT(3)
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#define KXCJK1013_REG_INT_SRC1_BIT_DRDY BIT(4)
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/* KXCJK: INT_SOURCE2: motion detect, KXTF9: INT_SRC_REG1: tap detect */
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#define KXCJK1013_REG_INT_SRC2_BIT_ZP BIT(0)
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#define KXCJK1013_REG_INT_SRC2_BIT_ZN BIT(1)
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#define KXCJK1013_REG_INT_SRC2_BIT_YP BIT(2)
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#define KXCJK1013_REG_INT_SRC2_BIT_YN BIT(3)
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#define KXCJK1013_REG_INT_SRC2_BIT_XP BIT(4)
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#define KXCJK1013_REG_INT_SRC2_BIT_XN BIT(5)
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/* KX023 interrupt routing to INT1. INT2 can be configured with INC6 */
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#define KX023_REG_INC4_BFI1 BIT(6)
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#define KX023_REG_INC4_WMI1 BIT(5)
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#define KX023_REG_INC4_DRDY1 BIT(4)
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#define KX023_REG_INC4_TDTI1 BIT(2)
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#define KX023_REG_INC4_WUFI1 BIT(1)
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#define KX023_REG_INC4_TPI1 BIT(0)
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#define KXCJK1013_DEFAULT_WAKE_THRES 1
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enum kx_chipset {
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KXCJK1013,
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KXCJ91008,
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KXTJ21009,
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KXTF9,
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KX0231025,
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KX_MAX_CHIPS /* this must be last */
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};
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enum kx_acpi_type {
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ACPI_GENERIC,
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ACPI_SMO8500,
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ACPI_KIOX010A,
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};
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struct kx_chipset_regs {
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u8 int_src1;
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u8 int_src2;
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u8 int_rel;
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u8 ctrl1;
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u8 wuf_ctrl;
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u8 int_ctrl1;
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u8 data_ctrl;
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u8 wake_timer;
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u8 wake_thres;
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};
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static const struct kx_chipset_regs kxcjk1013_regs = {
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.int_src1 = KXCJK1013_REG_INT_SRC1,
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.int_src2 = KXCJK1013_REG_INT_SRC2,
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.int_rel = KXCJK1013_REG_INT_REL,
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.ctrl1 = KXCJK1013_REG_CTRL1,
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.wuf_ctrl = KXCJK1013_REG_CTRL2,
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.int_ctrl1 = KXCJK1013_REG_INT_CTRL1,
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.data_ctrl = KXCJK1013_REG_DATA_CTRL,
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.wake_timer = KXCJK1013_REG_WAKE_TIMER,
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.wake_thres = KXCJK1013_REG_WAKE_THRES,
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};
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static const struct kx_chipset_regs kxtf9_regs = {
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/* .int_src1 was moved to INT_SRC2 on KXTF9 */
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.int_src1 = KXTF9_REG_INT_SRC2,
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/* .int_src2 is not available */
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.int_rel = KXCJK1013_REG_INT_REL,
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.ctrl1 = KXCJK1013_REG_CTRL1,
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.wuf_ctrl = KXTF9_REG_CTRL3,
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.int_ctrl1 = KXCJK1013_REG_INT_CTRL1,
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.data_ctrl = KXCJK1013_REG_DATA_CTRL,
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.wake_timer = KXCJK1013_REG_WAKE_TIMER,
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.wake_thres = KXTF9_REG_WAKE_THRESH,
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};
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/* The registers have totally different names but the bits are compatible */
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static const struct kx_chipset_regs kx0231025_regs = {
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.int_src1 = KX023_REG_INS2,
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.int_src2 = KX023_REG_INS3,
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.int_rel = KX023_REG_INT_REL,
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.ctrl1 = KX023_REG_CNTL1,
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.wuf_ctrl = KX023_REG_CNTL3,
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.int_ctrl1 = KX023_REG_INC1,
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.data_ctrl = KX023_REG_ODCNTL,
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.wake_timer = KX023_REG_WUFC,
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.wake_thres = KX023_REG_ATH,
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};
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enum kxcjk1013_axis {
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AXIS_X,
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AXIS_Y,
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AXIS_Z,
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AXIS_MAX
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};
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struct kxcjk1013_data {
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struct i2c_client *client;
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struct iio_trigger *dready_trig;
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struct iio_trigger *motion_trig;
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struct iio_mount_matrix orientation;
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struct mutex mutex;
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/* Ensure timestamp naturally aligned */
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struct {
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s16 chans[AXIS_MAX];
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s64 timestamp __aligned(8);
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} scan;
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u8 odr_bits;
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u8 range;
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int wake_thres;
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int wake_dur;
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bool active_high_intr;
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bool dready_trigger_on;
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int ev_enable_state;
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bool motion_trigger_on;
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int64_t timestamp;
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enum kx_chipset chipset;
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enum kx_acpi_type acpi_type;
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const struct kx_chipset_regs *regs;
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};
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enum kxcjk1013_mode {
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STANDBY,
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OPERATION,
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};
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enum kxcjk1013_range {
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KXCJK1013_RANGE_2G,
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KXCJK1013_RANGE_4G,
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KXCJK1013_RANGE_8G,
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};
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struct kx_odr_map {
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int val;
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int val2;
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int odr_bits;
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int wuf_bits;
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};
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static const struct kx_odr_map samp_freq_table[] = {
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{ 0, 781000, 0x08, 0x00 },
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{ 1, 563000, 0x09, 0x01 },
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{ 3, 125000, 0x0A, 0x02 },
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{ 6, 250000, 0x0B, 0x03 },
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{ 12, 500000, 0x00, 0x04 },
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{ 25, 0, 0x01, 0x05 },
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{ 50, 0, 0x02, 0x06 },
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{ 100, 0, 0x03, 0x06 },
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{ 200, 0, 0x04, 0x06 },
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{ 400, 0, 0x05, 0x06 },
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{ 800, 0, 0x06, 0x06 },
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{ 1600, 0, 0x07, 0x06 },
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};
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static const char *const kxcjk1013_samp_freq_avail =
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"0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800 1600";
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static const struct kx_odr_map kxtf9_samp_freq_table[] = {
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{ 25, 0, 0x01, 0x00 },
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{ 50, 0, 0x02, 0x01 },
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{ 100, 0, 0x03, 0x01 },
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{ 200, 0, 0x04, 0x01 },
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{ 400, 0, 0x05, 0x01 },
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{ 800, 0, 0x06, 0x01 },
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};
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static const char *const kxtf9_samp_freq_avail =
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"25 50 100 200 400 800";
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/* Refer to section 4 of the specification */
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static __maybe_unused const struct {
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int odr_bits;
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int usec;
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} odr_start_up_times[KX_MAX_CHIPS][12] = {
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/* KXCJK-1013 */
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{
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{0x08, 100000},
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{0x09, 100000},
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{0x0A, 100000},
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{0x0B, 100000},
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{0, 80000},
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{0x01, 41000},
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{0x02, 21000},
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{0x03, 11000},
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{0x04, 6400},
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{0x05, 3900},
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{0x06, 2700},
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{0x07, 2100},
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},
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/* KXCJ9-1008 */
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{
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{0x08, 100000},
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{0x09, 100000},
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{0x0A, 100000},
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{0x0B, 100000},
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{0, 80000},
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{0x01, 41000},
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{0x02, 21000},
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{0x03, 11000},
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{0x04, 6400},
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{0x05, 3900},
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{0x06, 2700},
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{0x07, 2100},
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},
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/* KXCTJ2-1009 */
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{
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{0x08, 1240000},
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{0x09, 621000},
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{0x0A, 309000},
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{0x0B, 151000},
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{0, 80000},
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{0x01, 41000},
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{0x02, 21000},
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{0x03, 11000},
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{0x04, 6000},
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{0x05, 4000},
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{0x06, 3000},
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{0x07, 2000},
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},
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/* KXTF9 */
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{
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{0x01, 81000},
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{0x02, 41000},
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{0x03, 21000},
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{0x04, 11000},
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{0x05, 5100},
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{0x06, 2700},
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},
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/* KX023-1025 */
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{
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/* First 4 are not in datasheet, taken from KXCTJ2-1009 */
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{0x08, 1240000},
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{0x09, 621000},
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{0x0A, 309000},
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{0x0B, 151000},
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{0, 81000},
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{0x01, 40000},
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{0x02, 22000},
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{0x03, 12000},
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{0x04, 7000},
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{0x05, 4400},
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{0x06, 3000},
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{0x07, 3000},
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},
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};
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static const struct {
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u16 scale;
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u8 gsel_0;
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u8 gsel_1;
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} KXCJK1013_scale_table[] = { {9582, 0, 0},
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{19163, 1, 0},
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{38326, 0, 1} };
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#ifdef CONFIG_ACPI
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enum kiox010a_fn_index {
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KIOX010A_SET_LAPTOP_MODE = 1,
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KIOX010A_SET_TABLET_MODE = 2,
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};
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static int kiox010a_dsm(struct device *dev, int fn_index)
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{
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acpi_handle handle = ACPI_HANDLE(dev);
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guid_t kiox010a_dsm_guid;
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union acpi_object *obj;
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if (!handle)
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return -ENODEV;
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guid_parse("1f339696-d475-4e26-8cad-2e9f8e6d7a91", &kiox010a_dsm_guid);
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obj = acpi_evaluate_dsm(handle, &kiox010a_dsm_guid, 1, fn_index, NULL);
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if (!obj)
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return -EIO;
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ACPI_FREE(obj);
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return 0;
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}
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#endif
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static int kxcjk1013_set_mode(struct kxcjk1013_data *data,
|
|
enum kxcjk1013_mode mode)
|
|
{
|
|
int ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (mode == STANDBY)
|
|
ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1;
|
|
else
|
|
ret |= KXCJK1013_REG_CTRL1_BIT_PC1;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_get_mode(struct kxcjk1013_data *data,
|
|
enum kxcjk1013_mode *mode)
|
|
{
|
|
int ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (ret & KXCJK1013_REG_CTRL1_BIT_PC1)
|
|
*mode = OPERATION;
|
|
else
|
|
*mode = STANDBY;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index)
|
|
{
|
|
int ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
ret &= ~(KXCJK1013_REG_CTRL1_BIT_GSEL0 |
|
|
KXCJK1013_REG_CTRL1_BIT_GSEL1);
|
|
ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3);
|
|
ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4);
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
data->range = range_index;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
|
|
{
|
|
int ret;
|
|
|
|
#ifdef CONFIG_ACPI
|
|
if (data->acpi_type == ACPI_KIOX010A) {
|
|
/* Make sure the kbd and touchpad on 2-in-1s using 2 KXCJ91008-s work */
|
|
kiox010a_dsm(&data->client->dev, KIOX010A_SET_LAPTOP_MODE);
|
|
}
|
|
#endif
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading who_am_i\n");
|
|
return ret;
|
|
}
|
|
|
|
dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n", ret);
|
|
|
|
ret = kxcjk1013_set_mode(data, STANDBY);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Set 12 bit mode */
|
|
ret |= KXCJK1013_REG_CTRL1_BIT_RES;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_ctrl\n");
|
|
return ret;
|
|
}
|
|
|
|
/* Setting range to 4G */
|
|
ret = kxcjk1013_set_range(data, KXCJK1013_RANGE_4G);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->data_ctrl);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_data_ctrl\n");
|
|
return ret;
|
|
}
|
|
|
|
data->odr_bits = ret;
|
|
|
|
/* Set up INT polarity */
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->int_ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (data->active_high_intr)
|
|
ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEA;
|
|
else
|
|
ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEA;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->int_ctrl1, ret);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
/* On KX023, route all used interrupts to INT1 for now */
|
|
if (data->chipset == KX0231025 && data->client->irq > 0) {
|
|
ret = i2c_smbus_write_byte_data(data->client, KX023_REG_INC4,
|
|
KX023_REG_INC4_DRDY1 |
|
|
KX023_REG_INC4_WUFI1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_inc4\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
ret = kxcjk1013_set_mode(data, OPERATION);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES;
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data)
|
|
{
|
|
int i;
|
|
int idx = data->chipset;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(odr_start_up_times[idx]); ++i) {
|
|
if (odr_start_up_times[idx][i].odr_bits == data->odr_bits)
|
|
return odr_start_up_times[idx][i].usec;
|
|
}
|
|
|
|
return KXCJK1013_MAX_STARTUP_TIME_US;
|
|
}
|
|
#endif
|
|
|
|
static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
|
|
{
|
|
#ifdef CONFIG_PM
|
|
int ret;
|
|
|
|
if (on)
|
|
ret = pm_runtime_resume_and_get(&data->client->dev);
|
|
else {
|
|
pm_runtime_mark_last_busy(&data->client->dev);
|
|
ret = pm_runtime_put_autosuspend(&data->client->dev);
|
|
}
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev,
|
|
"Failed: %s for %d\n", __func__, on);
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
|
|
{
|
|
int ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->wake_timer,
|
|
data->wake_dur);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev,
|
|
"Error writing reg_wake_timer\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->wake_thres,
|
|
data->wake_thres);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_wake_thres\n");
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data,
|
|
bool status)
|
|
{
|
|
int ret;
|
|
enum kxcjk1013_mode store_mode;
|
|
|
|
ret = kxcjk1013_get_mode(data, &store_mode);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* This is requirement by spec to change state to STANDBY */
|
|
ret = kxcjk1013_set_mode(data, STANDBY);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = kxcjk1013_chip_update_thresholds(data);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->int_ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (status)
|
|
ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEN;
|
|
else
|
|
ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->int_ctrl1, ret);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (status)
|
|
ret |= KXCJK1013_REG_CTRL1_BIT_WUFE;
|
|
else
|
|
ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (store_mode == OPERATION) {
|
|
ret = kxcjk1013_set_mode(data, OPERATION);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data,
|
|
bool status)
|
|
{
|
|
int ret;
|
|
enum kxcjk1013_mode store_mode;
|
|
|
|
ret = kxcjk1013_get_mode(data, &store_mode);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* This is requirement by spec to change state to STANDBY */
|
|
ret = kxcjk1013_set_mode(data, STANDBY);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->int_ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (status)
|
|
ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEN;
|
|
else
|
|
ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->int_ctrl1, ret);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (status)
|
|
ret |= KXCJK1013_REG_CTRL1_BIT_DRDY;
|
|
else
|
|
ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
|
|
return ret;
|
|
}
|
|
|
|
if (store_mode == OPERATION) {
|
|
ret = kxcjk1013_set_mode(data, OPERATION);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct kx_odr_map *kxcjk1013_find_odr_value(
|
|
const struct kx_odr_map *map, size_t map_size, int val, int val2)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < map_size; ++i) {
|
|
if (map[i].val == val && map[i].val2 == val2)
|
|
return &map[i];
|
|
}
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
static int kxcjk1013_convert_odr_value(const struct kx_odr_map *map,
|
|
size_t map_size, int odr_bits,
|
|
int *val, int *val2)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < map_size; ++i) {
|
|
if (map[i].odr_bits == odr_bits) {
|
|
*val = map[i].val;
|
|
*val2 = map[i].val2;
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
|
|
{
|
|
int ret;
|
|
enum kxcjk1013_mode store_mode;
|
|
const struct kx_odr_map *odr_setting;
|
|
|
|
ret = kxcjk1013_get_mode(data, &store_mode);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (data->chipset == KXTF9)
|
|
odr_setting = kxcjk1013_find_odr_value(kxtf9_samp_freq_table,
|
|
ARRAY_SIZE(kxtf9_samp_freq_table),
|
|
val, val2);
|
|
else
|
|
odr_setting = kxcjk1013_find_odr_value(samp_freq_table,
|
|
ARRAY_SIZE(samp_freq_table),
|
|
val, val2);
|
|
|
|
if (IS_ERR(odr_setting))
|
|
return PTR_ERR(odr_setting);
|
|
|
|
/* To change ODR, the chip must be set to STANDBY as per spec */
|
|
ret = kxcjk1013_set_mode(data, STANDBY);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->data_ctrl,
|
|
odr_setting->odr_bits);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing data_ctrl\n");
|
|
return ret;
|
|
}
|
|
|
|
data->odr_bits = odr_setting->odr_bits;
|
|
|
|
ret = i2c_smbus_write_byte_data(data->client, data->regs->wuf_ctrl,
|
|
odr_setting->wuf_bits);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error writing reg_ctrl2\n");
|
|
return ret;
|
|
}
|
|
|
|
if (store_mode == OPERATION) {
|
|
ret = kxcjk1013_set_mode(data, OPERATION);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_get_odr(struct kxcjk1013_data *data, int *val, int *val2)
|
|
{
|
|
if (data->chipset == KXTF9)
|
|
return kxcjk1013_convert_odr_value(kxtf9_samp_freq_table,
|
|
ARRAY_SIZE(kxtf9_samp_freq_table),
|
|
data->odr_bits, val, val2);
|
|
else
|
|
return kxcjk1013_convert_odr_value(samp_freq_table,
|
|
ARRAY_SIZE(samp_freq_table),
|
|
data->odr_bits, val, val2);
|
|
}
|
|
|
|
static int kxcjk1013_get_acc_reg(struct kxcjk1013_data *data, int axis)
|
|
{
|
|
u8 reg = KXCJK1013_REG_XOUT_L + axis * 2;
|
|
int ret;
|
|
|
|
ret = i2c_smbus_read_word_data(data->client, reg);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev,
|
|
"failed to read accel_%c registers\n", 'x' + axis);
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int kxcjk1013_set_scale(struct kxcjk1013_data *data, int val)
|
|
{
|
|
int ret, i;
|
|
enum kxcjk1013_mode store_mode;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(KXCJK1013_scale_table); ++i) {
|
|
if (KXCJK1013_scale_table[i].scale == val) {
|
|
ret = kxcjk1013_get_mode(data, &store_mode);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = kxcjk1013_set_mode(data, STANDBY);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = kxcjk1013_set_range(data, i);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (store_mode == OPERATION) {
|
|
ret = kxcjk1013_set_mode(data, OPERATION);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int kxcjk1013_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan, int *val,
|
|
int *val2, long mask)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_RAW:
|
|
mutex_lock(&data->mutex);
|
|
if (iio_buffer_enabled(indio_dev))
|
|
ret = -EBUSY;
|
|
else {
|
|
ret = kxcjk1013_set_power_state(data, true);
|
|
if (ret < 0) {
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
}
|
|
ret = kxcjk1013_get_acc_reg(data, chan->scan_index);
|
|
if (ret < 0) {
|
|
kxcjk1013_set_power_state(data, false);
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
}
|
|
*val = sign_extend32(ret >> chan->scan_type.shift,
|
|
chan->scan_type.realbits - 1);
|
|
ret = kxcjk1013_set_power_state(data, false);
|
|
}
|
|
mutex_unlock(&data->mutex);
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return IIO_VAL_INT;
|
|
|
|
case IIO_CHAN_INFO_SCALE:
|
|
*val = 0;
|
|
*val2 = KXCJK1013_scale_table[data->range].scale;
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
|
|
case IIO_CHAN_INFO_SAMP_FREQ:
|
|
mutex_lock(&data->mutex);
|
|
ret = kxcjk1013_get_odr(data, val, val2);
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int kxcjk1013_write_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan, int val,
|
|
int val2, long mask)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_SAMP_FREQ:
|
|
mutex_lock(&data->mutex);
|
|
ret = kxcjk1013_set_odr(data, val, val2);
|
|
mutex_unlock(&data->mutex);
|
|
break;
|
|
case IIO_CHAN_INFO_SCALE:
|
|
if (val)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&data->mutex);
|
|
ret = kxcjk1013_set_scale(data, val2);
|
|
mutex_unlock(&data->mutex);
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int kxcjk1013_read_event(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
enum iio_event_info info,
|
|
int *val, int *val2)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
*val2 = 0;
|
|
switch (info) {
|
|
case IIO_EV_INFO_VALUE:
|
|
*val = data->wake_thres;
|
|
break;
|
|
case IIO_EV_INFO_PERIOD:
|
|
*val = data->wake_dur;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return IIO_VAL_INT;
|
|
}
|
|
|
|
static int kxcjk1013_write_event(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
enum iio_event_info info,
|
|
int val, int val2)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
if (data->ev_enable_state)
|
|
return -EBUSY;
|
|
|
|
switch (info) {
|
|
case IIO_EV_INFO_VALUE:
|
|
data->wake_thres = val;
|
|
break;
|
|
case IIO_EV_INFO_PERIOD:
|
|
data->wake_dur = val;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_read_event_config(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
return data->ev_enable_state;
|
|
}
|
|
|
|
static int kxcjk1013_write_event_config(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan,
|
|
enum iio_event_type type,
|
|
enum iio_event_direction dir,
|
|
int state)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
if (state && data->ev_enable_state)
|
|
return 0;
|
|
|
|
mutex_lock(&data->mutex);
|
|
|
|
if (!state && data->motion_trigger_on) {
|
|
data->ev_enable_state = 0;
|
|
mutex_unlock(&data->mutex);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* We will expect the enable and disable to do operation in
|
|
* reverse order. This will happen here anyway as our
|
|
* resume operation uses sync mode runtime pm calls, the
|
|
* suspend operation will be delayed by autosuspend delay
|
|
* So the disable operation will still happen in reverse of
|
|
* enable operation. When runtime pm is disabled the mode
|
|
* is always on so sequence doesn't matter
|
|
*/
|
|
ret = kxcjk1013_set_power_state(data, state);
|
|
if (ret < 0) {
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
}
|
|
|
|
ret = kxcjk1013_setup_any_motion_interrupt(data, state);
|
|
if (ret < 0) {
|
|
kxcjk1013_set_power_state(data, false);
|
|
data->ev_enable_state = 0;
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
}
|
|
|
|
data->ev_enable_state = state;
|
|
mutex_unlock(&data->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_buffer_preenable(struct iio_dev *indio_dev)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
return kxcjk1013_set_power_state(data, true);
|
|
}
|
|
|
|
static int kxcjk1013_buffer_postdisable(struct iio_dev *indio_dev)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
return kxcjk1013_set_power_state(data, false);
|
|
}
|
|
|
|
static ssize_t kxcjk1013_get_samp_freq_avail(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf)
|
|
{
|
|
struct iio_dev *indio_dev = dev_to_iio_dev(dev);
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
const char *str;
|
|
|
|
if (data->chipset == KXTF9)
|
|
str = kxtf9_samp_freq_avail;
|
|
else
|
|
str = kxcjk1013_samp_freq_avail;
|
|
|
|
return sprintf(buf, "%s\n", str);
|
|
}
|
|
|
|
static IIO_DEVICE_ATTR(in_accel_sampling_frequency_available, S_IRUGO,
|
|
kxcjk1013_get_samp_freq_avail, NULL, 0);
|
|
|
|
static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019163 0.038326");
|
|
|
|
static struct attribute *kxcjk1013_attributes[] = {
|
|
&iio_dev_attr_in_accel_sampling_frequency_available.dev_attr.attr,
|
|
&iio_const_attr_in_accel_scale_available.dev_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group kxcjk1013_attrs_group = {
|
|
.attrs = kxcjk1013_attributes,
|
|
};
|
|
|
|
static const struct iio_event_spec kxcjk1013_event = {
|
|
.type = IIO_EV_TYPE_THRESH,
|
|
.dir = IIO_EV_DIR_EITHER,
|
|
.mask_separate = BIT(IIO_EV_INFO_VALUE) |
|
|
BIT(IIO_EV_INFO_ENABLE) |
|
|
BIT(IIO_EV_INFO_PERIOD)
|
|
};
|
|
|
|
static const struct iio_mount_matrix *
|
|
kxcjk1013_get_mount_matrix(const struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
return &data->orientation;
|
|
}
|
|
|
|
static const struct iio_chan_spec_ext_info kxcjk1013_ext_info[] = {
|
|
IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE, kxcjk1013_get_mount_matrix),
|
|
{ }
|
|
};
|
|
|
|
#define KXCJK1013_CHANNEL(_axis) { \
|
|
.type = IIO_ACCEL, \
|
|
.modified = 1, \
|
|
.channel2 = IIO_MOD_##_axis, \
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
|
|
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
|
|
BIT(IIO_CHAN_INFO_SAMP_FREQ), \
|
|
.scan_index = AXIS_##_axis, \
|
|
.scan_type = { \
|
|
.sign = 's', \
|
|
.realbits = 12, \
|
|
.storagebits = 16, \
|
|
.shift = 4, \
|
|
.endianness = IIO_LE, \
|
|
}, \
|
|
.event_spec = &kxcjk1013_event, \
|
|
.ext_info = kxcjk1013_ext_info, \
|
|
.num_event_specs = 1 \
|
|
}
|
|
|
|
static const struct iio_chan_spec kxcjk1013_channels[] = {
|
|
KXCJK1013_CHANNEL(X),
|
|
KXCJK1013_CHANNEL(Y),
|
|
KXCJK1013_CHANNEL(Z),
|
|
IIO_CHAN_SOFT_TIMESTAMP(3),
|
|
};
|
|
|
|
static const struct iio_buffer_setup_ops kxcjk1013_buffer_setup_ops = {
|
|
.preenable = kxcjk1013_buffer_preenable,
|
|
.postdisable = kxcjk1013_buffer_postdisable,
|
|
};
|
|
|
|
static const struct iio_info kxcjk1013_info = {
|
|
.attrs = &kxcjk1013_attrs_group,
|
|
.read_raw = kxcjk1013_read_raw,
|
|
.write_raw = kxcjk1013_write_raw,
|
|
.read_event_value = kxcjk1013_read_event,
|
|
.write_event_value = kxcjk1013_write_event,
|
|
.write_event_config = kxcjk1013_write_event_config,
|
|
.read_event_config = kxcjk1013_read_event_config,
|
|
};
|
|
|
|
static const unsigned long kxcjk1013_scan_masks[] = {0x7, 0};
|
|
|
|
static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p)
|
|
{
|
|
struct iio_poll_func *pf = p;
|
|
struct iio_dev *indio_dev = pf->indio_dev;
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
mutex_lock(&data->mutex);
|
|
ret = i2c_smbus_read_i2c_block_data_or_emulated(data->client,
|
|
KXCJK1013_REG_XOUT_L,
|
|
AXIS_MAX * 2,
|
|
(u8 *)data->scan.chans);
|
|
mutex_unlock(&data->mutex);
|
|
if (ret < 0)
|
|
goto err;
|
|
|
|
iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
|
|
data->timestamp);
|
|
err:
|
|
iio_trigger_notify_done(indio_dev->trig);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void kxcjk1013_trig_reen(struct iio_trigger *trig)
|
|
{
|
|
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->int_rel);
|
|
if (ret < 0)
|
|
dev_err(&data->client->dev, "Error reading reg_int_rel\n");
|
|
}
|
|
|
|
static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig,
|
|
bool state)
|
|
{
|
|
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
mutex_lock(&data->mutex);
|
|
|
|
if (!state && data->ev_enable_state && data->motion_trigger_on) {
|
|
data->motion_trigger_on = false;
|
|
mutex_unlock(&data->mutex);
|
|
return 0;
|
|
}
|
|
|
|
ret = kxcjk1013_set_power_state(data, state);
|
|
if (ret < 0) {
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
}
|
|
if (data->motion_trig == trig)
|
|
ret = kxcjk1013_setup_any_motion_interrupt(data, state);
|
|
else
|
|
ret = kxcjk1013_setup_new_data_interrupt(data, state);
|
|
if (ret < 0) {
|
|
kxcjk1013_set_power_state(data, false);
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
}
|
|
if (data->motion_trig == trig)
|
|
data->motion_trigger_on = state;
|
|
else
|
|
data->dready_trigger_on = state;
|
|
|
|
mutex_unlock(&data->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct iio_trigger_ops kxcjk1013_trigger_ops = {
|
|
.set_trigger_state = kxcjk1013_data_rdy_trigger_set_state,
|
|
.reenable = kxcjk1013_trig_reen,
|
|
};
|
|
|
|
static void kxcjk1013_report_motion_event(struct iio_dev *indio_dev)
|
|
{
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
int ret = i2c_smbus_read_byte_data(data->client, data->regs->int_src2);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_int_src2\n");
|
|
return;
|
|
}
|
|
|
|
if (ret & KXCJK1013_REG_INT_SRC2_BIT_XN)
|
|
iio_push_event(indio_dev,
|
|
IIO_MOD_EVENT_CODE(IIO_ACCEL,
|
|
0,
|
|
IIO_MOD_X,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_FALLING),
|
|
data->timestamp);
|
|
|
|
if (ret & KXCJK1013_REG_INT_SRC2_BIT_XP)
|
|
iio_push_event(indio_dev,
|
|
IIO_MOD_EVENT_CODE(IIO_ACCEL,
|
|
0,
|
|
IIO_MOD_X,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_RISING),
|
|
data->timestamp);
|
|
|
|
if (ret & KXCJK1013_REG_INT_SRC2_BIT_YN)
|
|
iio_push_event(indio_dev,
|
|
IIO_MOD_EVENT_CODE(IIO_ACCEL,
|
|
0,
|
|
IIO_MOD_Y,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_FALLING),
|
|
data->timestamp);
|
|
|
|
if (ret & KXCJK1013_REG_INT_SRC2_BIT_YP)
|
|
iio_push_event(indio_dev,
|
|
IIO_MOD_EVENT_CODE(IIO_ACCEL,
|
|
0,
|
|
IIO_MOD_Y,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_RISING),
|
|
data->timestamp);
|
|
|
|
if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZN)
|
|
iio_push_event(indio_dev,
|
|
IIO_MOD_EVENT_CODE(IIO_ACCEL,
|
|
0,
|
|
IIO_MOD_Z,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_FALLING),
|
|
data->timestamp);
|
|
|
|
if (ret & KXCJK1013_REG_INT_SRC2_BIT_ZP)
|
|
iio_push_event(indio_dev,
|
|
IIO_MOD_EVENT_CODE(IIO_ACCEL,
|
|
0,
|
|
IIO_MOD_Z,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_RISING),
|
|
data->timestamp);
|
|
}
|
|
|
|
static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
|
|
{
|
|
struct iio_dev *indio_dev = private;
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->int_src1);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "Error reading reg_int_src1\n");
|
|
goto ack_intr;
|
|
}
|
|
|
|
if (ret & KXCJK1013_REG_INT_SRC1_BIT_WUFS) {
|
|
if (data->chipset == KXTF9)
|
|
iio_push_event(indio_dev,
|
|
IIO_MOD_EVENT_CODE(IIO_ACCEL,
|
|
0,
|
|
IIO_MOD_X_AND_Y_AND_Z,
|
|
IIO_EV_TYPE_THRESH,
|
|
IIO_EV_DIR_RISING),
|
|
data->timestamp);
|
|
else
|
|
kxcjk1013_report_motion_event(indio_dev);
|
|
}
|
|
|
|
ack_intr:
|
|
if (data->dready_trigger_on)
|
|
return IRQ_HANDLED;
|
|
|
|
ret = i2c_smbus_read_byte_data(data->client, data->regs->int_rel);
|
|
if (ret < 0)
|
|
dev_err(&data->client->dev, "Error reading reg_int_rel\n");
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
|
|
{
|
|
struct iio_dev *indio_dev = private;
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
data->timestamp = iio_get_time_ns(indio_dev);
|
|
|
|
if (data->dready_trigger_on)
|
|
iio_trigger_poll(data->dready_trig);
|
|
else if (data->motion_trigger_on)
|
|
iio_trigger_poll(data->motion_trig);
|
|
|
|
if (data->ev_enable_state)
|
|
return IRQ_WAKE_THREAD;
|
|
else
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static const char *kxcjk1013_match_acpi_device(struct device *dev,
|
|
enum kx_chipset *chipset,
|
|
enum kx_acpi_type *acpi_type,
|
|
const char **label)
|
|
{
|
|
const struct acpi_device_id *id;
|
|
|
|
id = acpi_match_device(dev->driver->acpi_match_table, dev);
|
|
if (!id)
|
|
return NULL;
|
|
|
|
if (strcmp(id->id, "SMO8500") == 0) {
|
|
*acpi_type = ACPI_SMO8500;
|
|
} else if (strcmp(id->id, "KIOX010A") == 0) {
|
|
*acpi_type = ACPI_KIOX010A;
|
|
*label = "accel-display";
|
|
} else if (strcmp(id->id, "KIOX020A") == 0) {
|
|
*label = "accel-base";
|
|
}
|
|
|
|
*chipset = (enum kx_chipset)id->driver_data;
|
|
|
|
return dev_name(dev);
|
|
}
|
|
|
|
static int kxcjk1013_probe(struct i2c_client *client)
|
|
{
|
|
const struct i2c_device_id *id = i2c_client_get_device_id(client);
|
|
static const char * const regulator_names[] = { "vdd", "vddio" };
|
|
struct kxcjk1013_data *data;
|
|
struct iio_dev *indio_dev;
|
|
struct kxcjk_1013_platform_data *pdata;
|
|
const char *name;
|
|
int ret;
|
|
|
|
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
|
|
if (!indio_dev)
|
|
return -ENOMEM;
|
|
|
|
data = iio_priv(indio_dev);
|
|
i2c_set_clientdata(client, indio_dev);
|
|
data->client = client;
|
|
|
|
pdata = dev_get_platdata(&client->dev);
|
|
if (pdata) {
|
|
data->active_high_intr = pdata->active_high_intr;
|
|
data->orientation = pdata->orientation;
|
|
} else {
|
|
data->active_high_intr = true; /* default polarity */
|
|
|
|
ret = iio_read_mount_matrix(&client->dev, &data->orientation);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
ret = devm_regulator_bulk_get_enable(&client->dev,
|
|
ARRAY_SIZE(regulator_names),
|
|
regulator_names);
|
|
if (ret)
|
|
return dev_err_probe(&client->dev, ret, "Failed to get regulators\n");
|
|
|
|
/*
|
|
* A typical delay of 10ms is required for powering up
|
|
* according to the data sheets of supported chips.
|
|
* Hence double that to play safe.
|
|
*/
|
|
msleep(20);
|
|
|
|
if (id) {
|
|
data->chipset = (enum kx_chipset)(id->driver_data);
|
|
name = id->name;
|
|
} else if (ACPI_HANDLE(&client->dev)) {
|
|
name = kxcjk1013_match_acpi_device(&client->dev,
|
|
&data->chipset,
|
|
&data->acpi_type,
|
|
&indio_dev->label);
|
|
} else
|
|
return -ENODEV;
|
|
|
|
switch (data->chipset) {
|
|
case KXCJK1013:
|
|
case KXCJ91008:
|
|
case KXTJ21009:
|
|
data->regs = &kxcjk1013_regs;
|
|
break;
|
|
case KXTF9:
|
|
data->regs = &kxtf9_regs;
|
|
break;
|
|
case KX0231025:
|
|
data->regs = &kx0231025_regs;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = kxcjk1013_chip_init(data);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
mutex_init(&data->mutex);
|
|
|
|
indio_dev->channels = kxcjk1013_channels;
|
|
indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels);
|
|
indio_dev->available_scan_masks = kxcjk1013_scan_masks;
|
|
indio_dev->name = name;
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
indio_dev->info = &kxcjk1013_info;
|
|
|
|
if (client->irq > 0 && data->acpi_type != ACPI_SMO8500) {
|
|
ret = devm_request_threaded_irq(&client->dev, client->irq,
|
|
kxcjk1013_data_rdy_trig_poll,
|
|
kxcjk1013_event_handler,
|
|
IRQF_TRIGGER_RISING,
|
|
KXCJK1013_IRQ_NAME,
|
|
indio_dev);
|
|
if (ret)
|
|
goto err_poweroff;
|
|
|
|
data->dready_trig = devm_iio_trigger_alloc(&client->dev,
|
|
"%s-dev%d",
|
|
indio_dev->name,
|
|
iio_device_id(indio_dev));
|
|
if (!data->dready_trig) {
|
|
ret = -ENOMEM;
|
|
goto err_poweroff;
|
|
}
|
|
|
|
data->motion_trig = devm_iio_trigger_alloc(&client->dev,
|
|
"%s-any-motion-dev%d",
|
|
indio_dev->name,
|
|
iio_device_id(indio_dev));
|
|
if (!data->motion_trig) {
|
|
ret = -ENOMEM;
|
|
goto err_poweroff;
|
|
}
|
|
|
|
data->dready_trig->ops = &kxcjk1013_trigger_ops;
|
|
iio_trigger_set_drvdata(data->dready_trig, indio_dev);
|
|
ret = iio_trigger_register(data->dready_trig);
|
|
if (ret)
|
|
goto err_poweroff;
|
|
|
|
indio_dev->trig = iio_trigger_get(data->dready_trig);
|
|
|
|
data->motion_trig->ops = &kxcjk1013_trigger_ops;
|
|
iio_trigger_set_drvdata(data->motion_trig, indio_dev);
|
|
ret = iio_trigger_register(data->motion_trig);
|
|
if (ret) {
|
|
data->motion_trig = NULL;
|
|
goto err_trigger_unregister;
|
|
}
|
|
}
|
|
|
|
ret = iio_triggered_buffer_setup(indio_dev,
|
|
&iio_pollfunc_store_time,
|
|
kxcjk1013_trigger_handler,
|
|
&kxcjk1013_buffer_setup_ops);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "iio triggered buffer setup failed\n");
|
|
goto err_trigger_unregister;
|
|
}
|
|
|
|
ret = pm_runtime_set_active(&client->dev);
|
|
if (ret)
|
|
goto err_buffer_cleanup;
|
|
|
|
pm_runtime_enable(&client->dev);
|
|
pm_runtime_set_autosuspend_delay(&client->dev,
|
|
KXCJK1013_SLEEP_DELAY_MS);
|
|
pm_runtime_use_autosuspend(&client->dev);
|
|
|
|
ret = iio_device_register(indio_dev);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev, "unable to register iio device\n");
|
|
goto err_pm_cleanup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_pm_cleanup:
|
|
pm_runtime_dont_use_autosuspend(&client->dev);
|
|
pm_runtime_disable(&client->dev);
|
|
err_buffer_cleanup:
|
|
iio_triggered_buffer_cleanup(indio_dev);
|
|
err_trigger_unregister:
|
|
if (data->dready_trig)
|
|
iio_trigger_unregister(data->dready_trig);
|
|
if (data->motion_trig)
|
|
iio_trigger_unregister(data->motion_trig);
|
|
err_poweroff:
|
|
kxcjk1013_set_mode(data, STANDBY);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void kxcjk1013_remove(struct i2c_client *client)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
|
|
iio_device_unregister(indio_dev);
|
|
|
|
pm_runtime_disable(&client->dev);
|
|
pm_runtime_set_suspended(&client->dev);
|
|
|
|
iio_triggered_buffer_cleanup(indio_dev);
|
|
if (data->dready_trig) {
|
|
iio_trigger_unregister(data->dready_trig);
|
|
iio_trigger_unregister(data->motion_trig);
|
|
}
|
|
|
|
mutex_lock(&data->mutex);
|
|
kxcjk1013_set_mode(data, STANDBY);
|
|
mutex_unlock(&data->mutex);
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int kxcjk1013_suspend(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
mutex_lock(&data->mutex);
|
|
ret = kxcjk1013_set_mode(data, STANDBY);
|
|
mutex_unlock(&data->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int kxcjk1013_resume(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret = 0;
|
|
|
|
mutex_lock(&data->mutex);
|
|
ret = kxcjk1013_set_mode(data, OPERATION);
|
|
if (ret == 0)
|
|
ret = kxcjk1013_set_range(data, data->range);
|
|
mutex_unlock(&data->mutex);
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM
|
|
static int kxcjk1013_runtime_suspend(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
ret = kxcjk1013_set_mode(data, STANDBY);
|
|
if (ret < 0) {
|
|
dev_err(&data->client->dev, "powering off device failed\n");
|
|
return -EAGAIN;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int kxcjk1013_runtime_resume(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct kxcjk1013_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
int sleep_val;
|
|
|
|
ret = kxcjk1013_set_mode(data, OPERATION);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
sleep_val = kxcjk1013_get_startup_times(data);
|
|
if (sleep_val < 20000)
|
|
usleep_range(sleep_val, 20000);
|
|
else
|
|
msleep_interruptible(sleep_val/1000);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static const struct dev_pm_ops kxcjk1013_pm_ops = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(kxcjk1013_suspend, kxcjk1013_resume)
|
|
SET_RUNTIME_PM_OPS(kxcjk1013_runtime_suspend,
|
|
kxcjk1013_runtime_resume, NULL)
|
|
};
|
|
|
|
static const struct acpi_device_id kx_acpi_match[] = {
|
|
{"KXCJ1013", KXCJK1013},
|
|
{"KXCJ1008", KXCJ91008},
|
|
{"KXCJ9000", KXCJ91008},
|
|
{"KIOX0008", KXCJ91008},
|
|
{"KIOX0009", KXTJ21009},
|
|
{"KIOX000A", KXCJ91008},
|
|
{"KIOX010A", KXCJ91008}, /* KXCJ91008 in the display of a yoga 2-in-1 */
|
|
{"KIOX020A", KXCJ91008}, /* KXCJ91008 in the base of a yoga 2-in-1 */
|
|
{"KXTJ1009", KXTJ21009},
|
|
{"KXJ2109", KXTJ21009},
|
|
{"SMO8500", KXCJ91008},
|
|
{ },
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, kx_acpi_match);
|
|
|
|
static const struct i2c_device_id kxcjk1013_id[] = {
|
|
{"kxcjk1013", KXCJK1013},
|
|
{"kxcj91008", KXCJ91008},
|
|
{"kxtj21009", KXTJ21009},
|
|
{"kxtf9", KXTF9},
|
|
{"kx023-1025", KX0231025},
|
|
{"SMO8500", KXCJ91008},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, kxcjk1013_id);
|
|
|
|
static const struct of_device_id kxcjk1013_of_match[] = {
|
|
{ .compatible = "kionix,kxcjk1013", },
|
|
{ .compatible = "kionix,kxcj91008", },
|
|
{ .compatible = "kionix,kxtj21009", },
|
|
{ .compatible = "kionix,kxtf9", },
|
|
{ .compatible = "kionix,kx023-1025", },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, kxcjk1013_of_match);
|
|
|
|
static struct i2c_driver kxcjk1013_driver = {
|
|
.driver = {
|
|
.name = KXCJK1013_DRV_NAME,
|
|
.acpi_match_table = ACPI_PTR(kx_acpi_match),
|
|
.of_match_table = kxcjk1013_of_match,
|
|
.pm = &kxcjk1013_pm_ops,
|
|
},
|
|
.probe_new = kxcjk1013_probe,
|
|
.remove = kxcjk1013_remove,
|
|
.id_table = kxcjk1013_id,
|
|
};
|
|
module_i2c_driver(kxcjk1013_driver);
|
|
|
|
MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("KXCJK1013 accelerometer driver");
|