// SPDX-License-Identifier: GPL-2.0-only
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/*
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* DRV260X haptics driver family
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*
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* Author: Dan Murphy <dmurphy@ti.com>
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*
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* Copyright: (C) 2014 Texas Instruments, Inc.
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*/
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/module.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/gpio/consumer.h>
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#include <linux/regulator/consumer.h>
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#include <dt-bindings/input/ti-drv260x.h>
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#define DRV260X_STATUS 0x0
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#define DRV260X_MODE 0x1
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#define DRV260X_RT_PB_IN 0x2
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#define DRV260X_LIB_SEL 0x3
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#define DRV260X_WV_SEQ_1 0x4
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#define DRV260X_WV_SEQ_2 0x5
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#define DRV260X_WV_SEQ_3 0x6
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#define DRV260X_WV_SEQ_4 0x7
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#define DRV260X_WV_SEQ_5 0x8
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#define DRV260X_WV_SEQ_6 0x9
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#define DRV260X_WV_SEQ_7 0xa
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#define DRV260X_WV_SEQ_8 0xb
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#define DRV260X_GO 0xc
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#define DRV260X_OVERDRIVE_OFF 0xd
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#define DRV260X_SUSTAIN_P_OFF 0xe
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#define DRV260X_SUSTAIN_N_OFF 0xf
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#define DRV260X_BRAKE_OFF 0x10
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#define DRV260X_A_TO_V_CTRL 0x11
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#define DRV260X_A_TO_V_MIN_INPUT 0x12
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#define DRV260X_A_TO_V_MAX_INPUT 0x13
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#define DRV260X_A_TO_V_MIN_OUT 0x14
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#define DRV260X_A_TO_V_MAX_OUT 0x15
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#define DRV260X_RATED_VOLT 0x16
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#define DRV260X_OD_CLAMP_VOLT 0x17
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#define DRV260X_CAL_COMP 0x18
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#define DRV260X_CAL_BACK_EMF 0x19
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#define DRV260X_FEEDBACK_CTRL 0x1a
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#define DRV260X_CTRL1 0x1b
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#define DRV260X_CTRL2 0x1c
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#define DRV260X_CTRL3 0x1d
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#define DRV260X_CTRL4 0x1e
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#define DRV260X_CTRL5 0x1f
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#define DRV260X_LRA_LOOP_PERIOD 0x20
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#define DRV260X_VBAT_MON 0x21
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#define DRV260X_LRA_RES_PERIOD 0x22
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#define DRV260X_MAX_REG 0x23
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#define DRV260X_GO_BIT 0x01
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/* Library Selection */
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#define DRV260X_LIB_SEL_MASK 0x07
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#define DRV260X_LIB_SEL_RAM 0x0
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#define DRV260X_LIB_SEL_OD 0x1
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#define DRV260X_LIB_SEL_40_60 0x2
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#define DRV260X_LIB_SEL_60_80 0x3
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#define DRV260X_LIB_SEL_100_140 0x4
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#define DRV260X_LIB_SEL_140_PLUS 0x5
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#define DRV260X_LIB_SEL_HIZ_MASK 0x10
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#define DRV260X_LIB_SEL_HIZ_EN 0x01
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#define DRV260X_LIB_SEL_HIZ_DIS 0
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/* Mode register */
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#define DRV260X_STANDBY (1 << 6)
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#define DRV260X_STANDBY_MASK 0x40
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#define DRV260X_INTERNAL_TRIGGER 0x00
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#define DRV260X_EXT_TRIGGER_EDGE 0x01
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#define DRV260X_EXT_TRIGGER_LEVEL 0x02
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#define DRV260X_PWM_ANALOG_IN 0x03
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#define DRV260X_AUDIOHAPTIC 0x04
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#define DRV260X_RT_PLAYBACK 0x05
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#define DRV260X_DIAGNOSTICS 0x06
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#define DRV260X_AUTO_CAL 0x07
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/* Audio to Haptics Control */
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#define DRV260X_AUDIO_HAPTICS_PEAK_10MS (0 << 2)
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#define DRV260X_AUDIO_HAPTICS_PEAK_20MS (1 << 2)
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#define DRV260X_AUDIO_HAPTICS_PEAK_30MS (2 << 2)
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#define DRV260X_AUDIO_HAPTICS_PEAK_40MS (3 << 2)
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#define DRV260X_AUDIO_HAPTICS_FILTER_100HZ 0x00
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#define DRV260X_AUDIO_HAPTICS_FILTER_125HZ 0x01
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#define DRV260X_AUDIO_HAPTICS_FILTER_150HZ 0x02
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#define DRV260X_AUDIO_HAPTICS_FILTER_200HZ 0x03
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/* Min/Max Input/Output Voltages */
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#define DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT 0x19
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#define DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT 0x64
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#define DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT 0x19
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#define DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT 0xFF
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/* Feedback register */
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#define DRV260X_FB_REG_ERM_MODE 0x7f
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#define DRV260X_FB_REG_LRA_MODE (1 << 7)
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#define DRV260X_BRAKE_FACTOR_MASK 0x1f
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#define DRV260X_BRAKE_FACTOR_2X (1 << 0)
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#define DRV260X_BRAKE_FACTOR_3X (2 << 4)
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#define DRV260X_BRAKE_FACTOR_4X (3 << 4)
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#define DRV260X_BRAKE_FACTOR_6X (4 << 4)
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#define DRV260X_BRAKE_FACTOR_8X (5 << 4)
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#define DRV260X_BRAKE_FACTOR_16 (6 << 4)
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#define DRV260X_BRAKE_FACTOR_DIS (7 << 4)
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#define DRV260X_LOOP_GAIN_LOW 0xf3
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#define DRV260X_LOOP_GAIN_MED (1 << 2)
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#define DRV260X_LOOP_GAIN_HIGH (2 << 2)
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#define DRV260X_LOOP_GAIN_VERY_HIGH (3 << 2)
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#define DRV260X_BEMF_GAIN_0 0xfc
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#define DRV260X_BEMF_GAIN_1 (1 << 0)
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#define DRV260X_BEMF_GAIN_2 (2 << 0)
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#define DRV260X_BEMF_GAIN_3 (3 << 0)
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/* Control 1 register */
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#define DRV260X_AC_CPLE_EN (1 << 5)
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#define DRV260X_STARTUP_BOOST (1 << 7)
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/* Control 2 register */
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#define DRV260X_IDISS_TIME_45 0
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#define DRV260X_IDISS_TIME_75 (1 << 0)
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#define DRV260X_IDISS_TIME_150 (1 << 1)
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#define DRV260X_IDISS_TIME_225 0x03
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#define DRV260X_BLANK_TIME_45 (0 << 2)
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#define DRV260X_BLANK_TIME_75 (1 << 2)
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#define DRV260X_BLANK_TIME_150 (2 << 2)
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#define DRV260X_BLANK_TIME_225 (3 << 2)
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#define DRV260X_SAMP_TIME_150 (0 << 4)
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#define DRV260X_SAMP_TIME_200 (1 << 4)
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#define DRV260X_SAMP_TIME_250 (2 << 4)
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#define DRV260X_SAMP_TIME_300 (3 << 4)
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#define DRV260X_BRAKE_STABILIZER (1 << 6)
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#define DRV260X_UNIDIR_IN (0 << 7)
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#define DRV260X_BIDIR_IN (1 << 7)
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/* Control 3 Register */
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#define DRV260X_LRA_OPEN_LOOP (1 << 0)
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#define DRV260X_ANANLOG_IN (1 << 1)
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#define DRV260X_LRA_DRV_MODE (1 << 2)
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#define DRV260X_RTP_UNSIGNED_DATA (1 << 3)
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#define DRV260X_SUPPLY_COMP_DIS (1 << 4)
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#define DRV260X_ERM_OPEN_LOOP (1 << 5)
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#define DRV260X_NG_THRESH_0 (0 << 6)
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#define DRV260X_NG_THRESH_2 (1 << 6)
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#define DRV260X_NG_THRESH_4 (2 << 6)
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#define DRV260X_NG_THRESH_8 (3 << 6)
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/* Control 4 Register */
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#define DRV260X_AUTOCAL_TIME_150MS (0 << 4)
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#define DRV260X_AUTOCAL_TIME_250MS (1 << 4)
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#define DRV260X_AUTOCAL_TIME_500MS (2 << 4)
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#define DRV260X_AUTOCAL_TIME_1000MS (3 << 4)
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/**
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* struct drv260x_data -
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* @input_dev - Pointer to the input device
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* @client - Pointer to the I2C client
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* @regmap - Register map of the device
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* @work - Work item used to off load the enable/disable of the vibration
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* @enable_gpio - Pointer to the gpio used for enable/disabling
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* @regulator - Pointer to the regulator for the IC
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* @magnitude - Magnitude of the vibration event
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* @mode - The operating mode of the IC (LRA_NO_CAL, ERM or LRA)
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* @library - The vibration library to be used
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* @rated_voltage - The rated_voltage of the actuator
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* @overdriver_voltage - The over drive voltage of the actuator
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**/
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struct drv260x_data {
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struct input_dev *input_dev;
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struct i2c_client *client;
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struct regmap *regmap;
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struct work_struct work;
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struct gpio_desc *enable_gpio;
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struct regulator *regulator;
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u32 magnitude;
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u32 mode;
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u32 library;
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int rated_voltage;
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int overdrive_voltage;
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};
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static const struct reg_default drv260x_reg_defs[] = {
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{ DRV260X_STATUS, 0xe0 },
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{ DRV260X_MODE, 0x40 },
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{ DRV260X_RT_PB_IN, 0x00 },
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{ DRV260X_LIB_SEL, 0x00 },
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{ DRV260X_WV_SEQ_1, 0x01 },
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{ DRV260X_WV_SEQ_2, 0x00 },
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{ DRV260X_WV_SEQ_3, 0x00 },
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{ DRV260X_WV_SEQ_4, 0x00 },
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{ DRV260X_WV_SEQ_5, 0x00 },
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{ DRV260X_WV_SEQ_6, 0x00 },
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{ DRV260X_WV_SEQ_7, 0x00 },
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{ DRV260X_WV_SEQ_8, 0x00 },
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{ DRV260X_GO, 0x00 },
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{ DRV260X_OVERDRIVE_OFF, 0x00 },
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{ DRV260X_SUSTAIN_P_OFF, 0x00 },
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{ DRV260X_SUSTAIN_N_OFF, 0x00 },
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{ DRV260X_BRAKE_OFF, 0x00 },
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{ DRV260X_A_TO_V_CTRL, 0x05 },
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{ DRV260X_A_TO_V_MIN_INPUT, 0x19 },
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{ DRV260X_A_TO_V_MAX_INPUT, 0xff },
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{ DRV260X_A_TO_V_MIN_OUT, 0x19 },
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{ DRV260X_A_TO_V_MAX_OUT, 0xff },
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{ DRV260X_RATED_VOLT, 0x3e },
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{ DRV260X_OD_CLAMP_VOLT, 0x8c },
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{ DRV260X_CAL_COMP, 0x0c },
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{ DRV260X_CAL_BACK_EMF, 0x6c },
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{ DRV260X_FEEDBACK_CTRL, 0x36 },
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{ DRV260X_CTRL1, 0x93 },
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{ DRV260X_CTRL2, 0xfa },
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{ DRV260X_CTRL3, 0xa0 },
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{ DRV260X_CTRL4, 0x20 },
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{ DRV260X_CTRL5, 0x80 },
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{ DRV260X_LRA_LOOP_PERIOD, 0x33 },
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{ DRV260X_VBAT_MON, 0x00 },
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{ DRV260X_LRA_RES_PERIOD, 0x00 },
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};
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#define DRV260X_DEF_RATED_VOLT 0x90
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#define DRV260X_DEF_OD_CLAMP_VOLT 0x90
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/**
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* Rated and Overdriver Voltages:
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* Calculated using the formula r = v * 255 / 5.6
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* where r is what will be written to the register
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* and v is the rated or overdriver voltage of the actuator
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**/
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static int drv260x_calculate_voltage(unsigned int voltage)
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{
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return (voltage * 255 / 5600);
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}
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static void drv260x_worker(struct work_struct *work)
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{
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struct drv260x_data *haptics = container_of(work, struct drv260x_data, work);
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int error;
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gpiod_set_value(haptics->enable_gpio, 1);
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/* Data sheet says to wait 250us before trying to communicate */
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udelay(250);
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error = regmap_write(haptics->regmap,
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DRV260X_MODE, DRV260X_RT_PLAYBACK);
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write set mode: %d\n", error);
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} else {
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error = regmap_write(haptics->regmap,
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DRV260X_RT_PB_IN, haptics->magnitude);
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if (error)
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dev_err(&haptics->client->dev,
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"Failed to set magnitude: %d\n", error);
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}
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}
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static int drv260x_haptics_play(struct input_dev *input, void *data,
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struct ff_effect *effect)
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{
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struct drv260x_data *haptics = input_get_drvdata(input);
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haptics->mode = DRV260X_LRA_NO_CAL_MODE;
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if (effect->u.rumble.strong_magnitude > 0)
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haptics->magnitude = effect->u.rumble.strong_magnitude;
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else if (effect->u.rumble.weak_magnitude > 0)
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haptics->magnitude = effect->u.rumble.weak_magnitude;
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else
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haptics->magnitude = 0;
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schedule_work(&haptics->work);
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return 0;
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}
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static void drv260x_close(struct input_dev *input)
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{
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struct drv260x_data *haptics = input_get_drvdata(input);
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int error;
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cancel_work_sync(&haptics->work);
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error = regmap_write(haptics->regmap, DRV260X_MODE, DRV260X_STANDBY);
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if (error)
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dev_err(&haptics->client->dev,
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"Failed to enter standby mode: %d\n", error);
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gpiod_set_value(haptics->enable_gpio, 0);
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}
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static const struct reg_sequence drv260x_lra_cal_regs[] = {
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{ DRV260X_MODE, DRV260X_AUTO_CAL },
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{ DRV260X_CTRL3, DRV260X_NG_THRESH_2 },
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{ DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE |
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DRV260X_BRAKE_FACTOR_4X | DRV260X_LOOP_GAIN_HIGH },
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};
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static const struct reg_sequence drv260x_lra_init_regs[] = {
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{ DRV260X_MODE, DRV260X_RT_PLAYBACK },
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{ DRV260X_A_TO_V_CTRL, DRV260X_AUDIO_HAPTICS_PEAK_20MS |
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DRV260X_AUDIO_HAPTICS_FILTER_125HZ },
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{ DRV260X_A_TO_V_MIN_INPUT, DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT },
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{ DRV260X_A_TO_V_MAX_INPUT, DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT },
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{ DRV260X_A_TO_V_MIN_OUT, DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT },
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{ DRV260X_A_TO_V_MAX_OUT, DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT },
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{ DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE |
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DRV260X_BRAKE_FACTOR_2X | DRV260X_LOOP_GAIN_MED |
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DRV260X_BEMF_GAIN_3 },
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{ DRV260X_CTRL1, DRV260X_STARTUP_BOOST },
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{ DRV260X_CTRL2, DRV260X_SAMP_TIME_250 },
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{ DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_ANANLOG_IN },
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{ DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS },
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};
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static const struct reg_sequence drv260x_erm_cal_regs[] = {
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{ DRV260X_MODE, DRV260X_AUTO_CAL },
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{ DRV260X_A_TO_V_MIN_INPUT, DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT },
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{ DRV260X_A_TO_V_MAX_INPUT, DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT },
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{ DRV260X_A_TO_V_MIN_OUT, DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT },
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{ DRV260X_A_TO_V_MAX_OUT, DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT },
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{ DRV260X_FEEDBACK_CTRL, DRV260X_BRAKE_FACTOR_3X |
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DRV260X_LOOP_GAIN_MED | DRV260X_BEMF_GAIN_2 },
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{ DRV260X_CTRL1, DRV260X_STARTUP_BOOST },
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{ DRV260X_CTRL2, DRV260X_SAMP_TIME_250 | DRV260X_BLANK_TIME_75 |
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DRV260X_IDISS_TIME_75 },
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{ DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_ERM_OPEN_LOOP },
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{ DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS },
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};
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static int drv260x_init(struct drv260x_data *haptics)
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{
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int error;
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unsigned int cal_buf;
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error = regmap_write(haptics->regmap,
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DRV260X_RATED_VOLT, haptics->rated_voltage);
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write DRV260X_RATED_VOLT register: %d\n",
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error);
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return error;
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}
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error = regmap_write(haptics->regmap,
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DRV260X_OD_CLAMP_VOLT, haptics->overdrive_voltage);
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write DRV260X_OD_CLAMP_VOLT register: %d\n",
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error);
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return error;
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}
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switch (haptics->mode) {
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case DRV260X_LRA_MODE:
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error = regmap_register_patch(haptics->regmap,
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drv260x_lra_cal_regs,
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ARRAY_SIZE(drv260x_lra_cal_regs));
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write LRA calibration registers: %d\n",
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error);
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return error;
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}
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break;
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case DRV260X_ERM_MODE:
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error = regmap_register_patch(haptics->regmap,
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drv260x_erm_cal_regs,
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ARRAY_SIZE(drv260x_erm_cal_regs));
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write ERM calibration registers: %d\n",
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error);
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return error;
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}
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error = regmap_update_bits(haptics->regmap, DRV260X_LIB_SEL,
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DRV260X_LIB_SEL_MASK,
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haptics->library);
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write DRV260X_LIB_SEL register: %d\n",
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error);
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return error;
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}
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break;
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default:
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error = regmap_register_patch(haptics->regmap,
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drv260x_lra_init_regs,
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ARRAY_SIZE(drv260x_lra_init_regs));
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write LRA init registers: %d\n",
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error);
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return error;
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}
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error = regmap_update_bits(haptics->regmap, DRV260X_LIB_SEL,
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DRV260X_LIB_SEL_MASK,
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haptics->library);
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write DRV260X_LIB_SEL register: %d\n",
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error);
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return error;
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}
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/* No need to set GO bit here */
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return 0;
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}
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error = regmap_write(haptics->regmap, DRV260X_GO, DRV260X_GO_BIT);
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to write GO register: %d\n",
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error);
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return error;
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}
|
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do {
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error = regmap_read(haptics->regmap, DRV260X_GO, &cal_buf);
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if (error) {
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dev_err(&haptics->client->dev,
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"Failed to read GO register: %d\n",
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error);
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return error;
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}
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} while (cal_buf == DRV260X_GO_BIT);
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return 0;
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}
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static const struct regmap_config drv260x_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = DRV260X_MAX_REG,
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.reg_defaults = drv260x_reg_defs,
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.num_reg_defaults = ARRAY_SIZE(drv260x_reg_defs),
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.cache_type = REGCACHE_NONE,
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};
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static int drv260x_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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struct device *dev = &client->dev;
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struct drv260x_data *haptics;
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u32 voltage;
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int error;
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haptics = devm_kzalloc(dev, sizeof(*haptics), GFP_KERNEL);
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if (!haptics)
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return -ENOMEM;
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error = device_property_read_u32(dev, "mode", &haptics->mode);
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if (error) {
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dev_err(dev, "Can't fetch 'mode' property: %d\n", error);
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return error;
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}
|
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if (haptics->mode < DRV260X_LRA_MODE ||
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haptics->mode > DRV260X_ERM_MODE) {
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dev_err(dev, "Vibrator mode is invalid: %i\n", haptics->mode);
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return -EINVAL;
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}
|
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error = device_property_read_u32(dev, "library-sel", &haptics->library);
|
if (error) {
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dev_err(dev, "Can't fetch 'library-sel' property: %d\n", error);
|
return error;
|
}
|
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if (haptics->library < DRV260X_LIB_EMPTY ||
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haptics->library > DRV260X_ERM_LIB_F) {
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dev_err(dev,
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"Library value is invalid: %i\n", haptics->library);
|
return -EINVAL;
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}
|
|
if (haptics->mode == DRV260X_LRA_MODE &&
|
haptics->library != DRV260X_LIB_EMPTY &&
|
haptics->library != DRV260X_LIB_LRA) {
|
dev_err(dev, "LRA Mode with ERM Library mismatch\n");
|
return -EINVAL;
|
}
|
|
if (haptics->mode == DRV260X_ERM_MODE &&
|
(haptics->library == DRV260X_LIB_EMPTY ||
|
haptics->library == DRV260X_LIB_LRA)) {
|
dev_err(dev, "ERM Mode with LRA Library mismatch\n");
|
return -EINVAL;
|
}
|
|
error = device_property_read_u32(dev, "vib-rated-mv", &voltage);
|
haptics->rated_voltage = error ? DRV260X_DEF_RATED_VOLT :
|
drv260x_calculate_voltage(voltage);
|
|
error = device_property_read_u32(dev, "vib-overdrive-mv", &voltage);
|
haptics->overdrive_voltage = error ? DRV260X_DEF_OD_CLAMP_VOLT :
|
drv260x_calculate_voltage(voltage);
|
|
haptics->regulator = devm_regulator_get(dev, "vbat");
|
if (IS_ERR(haptics->regulator)) {
|
error = PTR_ERR(haptics->regulator);
|
dev_err(dev, "unable to get regulator, error: %d\n", error);
|
return error;
|
}
|
|
haptics->enable_gpio = devm_gpiod_get_optional(dev, "enable",
|
GPIOD_OUT_HIGH);
|
if (IS_ERR(haptics->enable_gpio))
|
return PTR_ERR(haptics->enable_gpio);
|
|
haptics->input_dev = devm_input_allocate_device(dev);
|
if (!haptics->input_dev) {
|
dev_err(dev, "Failed to allocate input device\n");
|
return -ENOMEM;
|
}
|
|
haptics->input_dev->name = "drv260x:haptics";
|
haptics->input_dev->close = drv260x_close;
|
input_set_drvdata(haptics->input_dev, haptics);
|
input_set_capability(haptics->input_dev, EV_FF, FF_RUMBLE);
|
|
error = input_ff_create_memless(haptics->input_dev, NULL,
|
drv260x_haptics_play);
|
if (error) {
|
dev_err(dev, "input_ff_create() failed: %d\n", error);
|
return error;
|
}
|
|
INIT_WORK(&haptics->work, drv260x_worker);
|
|
haptics->client = client;
|
i2c_set_clientdata(client, haptics);
|
|
haptics->regmap = devm_regmap_init_i2c(client, &drv260x_regmap_config);
|
if (IS_ERR(haptics->regmap)) {
|
error = PTR_ERR(haptics->regmap);
|
dev_err(dev, "Failed to allocate register map: %d\n", error);
|
return error;
|
}
|
|
error = drv260x_init(haptics);
|
if (error) {
|
dev_err(dev, "Device init failed: %d\n", error);
|
return error;
|
}
|
|
error = input_register_device(haptics->input_dev);
|
if (error) {
|
dev_err(dev, "couldn't register input device: %d\n", error);
|
return error;
|
}
|
|
return 0;
|
}
|
|
static int __maybe_unused drv260x_suspend(struct device *dev)
|
{
|
struct drv260x_data *haptics = dev_get_drvdata(dev);
|
int ret = 0;
|
|
mutex_lock(&haptics->input_dev->mutex);
|
|
if (haptics->input_dev->users) {
|
ret = regmap_update_bits(haptics->regmap,
|
DRV260X_MODE,
|
DRV260X_STANDBY_MASK,
|
DRV260X_STANDBY);
|
if (ret) {
|
dev_err(dev, "Failed to set standby mode\n");
|
goto out;
|
}
|
|
gpiod_set_value(haptics->enable_gpio, 0);
|
|
ret = regulator_disable(haptics->regulator);
|
if (ret) {
|
dev_err(dev, "Failed to disable regulator\n");
|
regmap_update_bits(haptics->regmap,
|
DRV260X_MODE,
|
DRV260X_STANDBY_MASK, 0);
|
}
|
}
|
out:
|
mutex_unlock(&haptics->input_dev->mutex);
|
return ret;
|
}
|
|
static int __maybe_unused drv260x_resume(struct device *dev)
|
{
|
struct drv260x_data *haptics = dev_get_drvdata(dev);
|
int ret = 0;
|
|
mutex_lock(&haptics->input_dev->mutex);
|
|
if (haptics->input_dev->users) {
|
ret = regulator_enable(haptics->regulator);
|
if (ret) {
|
dev_err(dev, "Failed to enable regulator\n");
|
goto out;
|
}
|
|
ret = regmap_update_bits(haptics->regmap,
|
DRV260X_MODE,
|
DRV260X_STANDBY_MASK, 0);
|
if (ret) {
|
dev_err(dev, "Failed to unset standby mode\n");
|
regulator_disable(haptics->regulator);
|
goto out;
|
}
|
|
gpiod_set_value(haptics->enable_gpio, 1);
|
}
|
|
out:
|
mutex_unlock(&haptics->input_dev->mutex);
|
return ret;
|
}
|
|
static SIMPLE_DEV_PM_OPS(drv260x_pm_ops, drv260x_suspend, drv260x_resume);
|
|
static const struct i2c_device_id drv260x_id[] = {
|
{ "drv2605l", 0 },
|
{ }
|
};
|
MODULE_DEVICE_TABLE(i2c, drv260x_id);
|
|
static const struct of_device_id drv260x_of_match[] = {
|
{ .compatible = "ti,drv2604", },
|
{ .compatible = "ti,drv2604l", },
|
{ .compatible = "ti,drv2605", },
|
{ .compatible = "ti,drv2605l", },
|
{ }
|
};
|
MODULE_DEVICE_TABLE(of, drv260x_of_match);
|
|
static struct i2c_driver drv260x_driver = {
|
.probe = drv260x_probe,
|
.driver = {
|
.name = "drv260x-haptics",
|
.of_match_table = drv260x_of_match,
|
.pm = &drv260x_pm_ops,
|
},
|
.id_table = drv260x_id,
|
};
|
module_i2c_driver(drv260x_driver);
|
|
MODULE_DESCRIPTION("TI DRV260x haptics driver");
|
MODULE_LICENSE("GPL");
|
MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
|
