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1622 lines
39 KiB
1622 lines
39 KiB
// 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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|
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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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|
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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 KXCJK1013_REG_INT_SRC1 0x16 /* compatible, but called INT_SRC2 in KXTF9 ds */ |
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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 KXCJK1013_REG_CTRL2 0x1D /* mostly compatible, CTRL_REG3 in KTXF9 ds */ |
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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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#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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|
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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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|
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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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#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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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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|
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struct kxcjk1013_data { |
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struct regulator_bulk_data regulators[2]; |
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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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s16 buffer[8]; |
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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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}; |
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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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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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|
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/* Refer to section 4 of the specification */ |
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static 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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}; |
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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, |
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enum kxcjk1013_mode mode) |
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{ |
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int ret; |
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ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
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return ret; |
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} |
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if (mode == STANDBY) |
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ret &= ~KXCJK1013_REG_CTRL1_BIT_PC1; |
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else |
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ret |= KXCJK1013_REG_CTRL1_BIT_PC1; |
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ret = i2c_smbus_write_byte_data(data->client, |
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KXCJK1013_REG_CTRL1, ret); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); |
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return ret; |
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} |
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return 0; |
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} |
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static int kxcjk1013_get_mode(struct kxcjk1013_data *data, |
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enum kxcjk1013_mode *mode) |
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{ |
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int ret; |
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ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
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return ret; |
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} |
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if (ret & KXCJK1013_REG_CTRL1_BIT_PC1) |
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*mode = OPERATION; |
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else |
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*mode = STANDBY; |
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return 0; |
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} |
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static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index) |
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{ |
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int ret; |
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ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
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return ret; |
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} |
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ret &= ~(KXCJK1013_REG_CTRL1_BIT_GSEL0 | |
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KXCJK1013_REG_CTRL1_BIT_GSEL1); |
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ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3); |
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ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4); |
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ret = i2c_smbus_write_byte_data(data->client, |
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KXCJK1013_REG_CTRL1, |
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ret); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error writing reg_ctrl1\n"); |
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return ret; |
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} |
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data->range = range_index; |
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return 0; |
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} |
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static int kxcjk1013_chip_init(struct kxcjk1013_data *data) |
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{ |
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int ret; |
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#ifdef CONFIG_ACPI |
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if (data->acpi_type == ACPI_KIOX010A) { |
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/* Make sure the kbd and touchpad on 2-in-1s using 2 KXCJ91008-s work */ |
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kiox010a_dsm(&data->client->dev, KIOX010A_SET_LAPTOP_MODE); |
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} |
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#endif |
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ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error reading who_am_i\n"); |
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return ret; |
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} |
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dev_dbg(&data->client->dev, "KXCJK1013 Chip Id %x\n", ret); |
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ret = kxcjk1013_set_mode(data, STANDBY); |
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if (ret < 0) |
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return ret; |
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ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error reading reg_ctrl1\n"); |
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return ret; |
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} |
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/* Set 12 bit mode */ |
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ret |= KXCJK1013_REG_CTRL1_BIT_RES; |
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|
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ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL1, |
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ret); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error reading reg_ctrl\n"); |
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return ret; |
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} |
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|
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/* Setting range to 4G */ |
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ret = kxcjk1013_set_range(data, KXCJK1013_RANGE_4G); |
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if (ret < 0) |
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return ret; |
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ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error reading reg_data_ctrl\n"); |
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return ret; |
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} |
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data->odr_bits = ret; |
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|
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/* Set up INT polarity */ |
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ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n"); |
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return ret; |
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} |
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|
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if (data->active_high_intr) |
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ret |= KXCJK1013_REG_INT_CTRL1_BIT_IEA; |
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else |
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ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEA; |
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|
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ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1, |
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ret); |
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if (ret < 0) { |
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dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n"); |
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return ret; |
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} |
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ret = kxcjk1013_set_mode(data, OPERATION); |
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if (ret < 0) |
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return ret; |
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data->wake_thres = KXCJK1013_DEFAULT_WAKE_THRES; |
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|
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return 0; |
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} |
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|
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#ifdef CONFIG_PM |
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static int kxcjk1013_get_startup_times(struct kxcjk1013_data *data) |
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{ |
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int i; |
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int idx = data->chipset; |
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|
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for (i = 0; i < ARRAY_SIZE(odr_start_up_times[idx]); ++i) { |
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if (odr_start_up_times[idx][i].odr_bits == data->odr_bits) |
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return odr_start_up_times[idx][i].usec; |
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} |
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|
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return KXCJK1013_MAX_STARTUP_TIME_US; |
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} |
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#endif |
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|
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static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on) |
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{ |
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#ifdef CONFIG_PM |
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int ret; |
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|
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if (on) |
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ret = pm_runtime_get_sync(&data->client->dev); |
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else { |
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pm_runtime_mark_last_busy(&data->client->dev); |
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ret = pm_runtime_put_autosuspend(&data->client->dev); |
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} |
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if (ret < 0) { |
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dev_err(&data->client->dev, |
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"Failed: %s for %d\n", __func__, on); |
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if (on) |
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pm_runtime_put_noidle(&data->client->dev); |
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return ret; |
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} |
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#endif |
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|
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return 0; |
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} |
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|
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static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data) |
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{ |
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int waketh_reg, ret; |
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|
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ret = i2c_smbus_write_byte_data(data->client, |
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KXCJK1013_REG_WAKE_TIMER, |
|
data->wake_dur); |
|
if (ret < 0) { |
|
dev_err(&data->client->dev, |
|
"Error writing reg_wake_timer\n"); |
|
return ret; |
|
} |
|
|
|
waketh_reg = data->chipset == KXTF9 ? |
|
KXTF9_REG_WAKE_THRESH : KXCJK1013_REG_WAKE_THRES; |
|
ret = i2c_smbus_write_byte_data(data->client, waketh_reg, |
|
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, KXCJK1013_REG_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, KXCJK1013_REG_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, KXCJK1013_REG_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, |
|
KXCJK1013_REG_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, KXCJK1013_REG_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, KXCJK1013_REG_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, KXCJK1013_REG_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, |
|
KXCJK1013_REG_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, KXCJK1013_REG_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, KXCJK1013_REG_CTRL2, |
|
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 >> 4, 11); |
|
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 |
|
* 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->buffer); |
|
mutex_unlock(&data->mutex); |
|
if (ret < 0) |
|
goto err; |
|
|
|
iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, |
|
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, KXCJK1013_REG_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, |
|
KXCJK1013_REG_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, KXCJK1013_REG_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, KXCJK1013_REG_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 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; |
|
|
|
*chipset = (enum kx_chipset)id->driver_data; |
|
|
|
return dev_name(dev); |
|
} |
|
|
|
static void kxcjk1013_disable_regulators(void *d) |
|
{ |
|
struct kxcjk1013_data *data = d; |
|
|
|
regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators); |
|
} |
|
|
|
static int kxcjk1013_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
|
{ |
|
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, "mount-matrix", |
|
&data->orientation); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
data->regulators[0].supply = "vdd"; |
|
data->regulators[1].supply = "vddio"; |
|
ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(data->regulators), |
|
data->regulators); |
|
if (ret) |
|
return dev_err_probe(&client->dev, ret, "Failed to get regulators\n"); |
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators), |
|
data->regulators); |
|
if (ret) |
|
return ret; |
|
|
|
ret = devm_add_action_or_reset(&client->dev, kxcjk1013_disable_regulators, data); |
|
if (ret) |
|
return ret; |
|
|
|
/* |
|
* 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); |
|
} else |
|
return -ENODEV; |
|
|
|
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, |
|
indio_dev->id); |
|
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, |
|
indio_dev->id); |
|
if (!data->motion_trig) { |
|
ret = -ENOMEM; |
|
goto err_poweroff; |
|
} |
|
|
|
data->dready_trig->dev.parent = &client->dev; |
|
data->dready_trig->ops = &kxcjk1013_trigger_ops; |
|
iio_trigger_set_drvdata(data->dready_trig, indio_dev); |
|
indio_dev->trig = data->dready_trig; |
|
iio_trigger_get(indio_dev->trig); |
|
ret = iio_trigger_register(data->dready_trig); |
|
if (ret) |
|
goto err_poweroff; |
|
|
|
data->motion_trig->dev.parent = &client->dev; |
|
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_buffer_cleanup; |
|
} |
|
|
|
return 0; |
|
|
|
err_buffer_cleanup: |
|
if (data->dready_trig) |
|
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 int 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); |
|
pm_runtime_put_noidle(&client->dev); |
|
|
|
if (data->dready_trig) { |
|
iio_triggered_buffer_cleanup(indio_dev); |
|
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); |
|
|
|
return 0; |
|
} |
|
|
|
#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}, |
|
{"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", }, |
|
{ } |
|
}; |
|
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), |
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.of_match_table = kxcjk1013_of_match, |
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.pm = &kxcjk1013_pm_ops, |
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}, |
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.probe = kxcjk1013_probe, |
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.remove = kxcjk1013_remove, |
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.id_table = kxcjk1013_id, |
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}; |
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module_i2c_driver(kxcjk1013_driver); |
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MODULE_AUTHOR("Srinivas Pandruvada <[email protected]>"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_DESCRIPTION("KXCJK1013 accelerometer driver");
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