drv260x.rar_max

/* * DRV260X haptics driver family * * Author: Dan Murphy <dmurphy@ti.com> * * Copyright: (C) 2014 Texas Instruments, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #include <linux/i2c.h> #include <linux/input.h> #include <linux/module.h> #include <linux/of_gpio.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/regulator/consumer.h> #include <dt-bindings/input/ti-drv260x.h> #include <linux/platform_data/drv260x-pdata.h> #define DRV260X_STATUS 0x0 #define DRV260X_MODE 0x1 #define DRV260X_RT_PB_IN 0x2 #define DRV260X_LIB_SEL 0x3 #define DRV260X_WV_SEQ_1 0x4 #define DRV260X_WV_SEQ_2 0x5 #define DRV260X_WV_SEQ_3 0x6 #define DRV260X_WV_SEQ_4 0x7 #define DRV260X_WV_SEQ_5 0x8 #define DRV260X_WV_SEQ_6 0x9 #define DRV260X_WV_SEQ_7 0xa #define DRV260X_WV_SEQ_8 0xb #define DRV260X_GO 0xc #define DRV260X_OVERDRIVE_OFF 0xd #define DRV260X_SUSTAIN_P_OFF 0xe #define DRV260X_SUSTAIN_N_OFF 0xf #define DRV260X_BRAKE_OFF 0x10 #define DRV260X_A_TO_V_CTRL 0x11 #define DRV260X_A_TO_V_MIN_INPUT 0x12 #define DRV260X_A_TO_V_MAX_INPUT 0x13 #define DRV260X_A_TO_V_MIN_OUT 0x14 #define DRV260X_A_TO_V_MAX_OUT 0x15 #define DRV260X_RATED_VOLT 0x16 #define DRV260X_OD_CLAMP_VOLT 0x17 #define DRV260X_CAL_COMP 0x18 #define DRV260X_CAL_BACK_EMF 0x19 #define DRV260X_FEEDBACK_CTRL 0x1a #define DRV260X_CTRL1 0x1b #define DRV260X_CTRL2 0x1c #define DRV260X_CTRL3 0x1d #define DRV260X_CTRL4 0x1e #define DRV260X_CTRL5 0x1f #define DRV260X_LRA_LOOP_PERIOD 0x20 #define DRV260X_VBAT_MON 0x21 #define DRV260X_LRA_RES_PERIOD 0x22 #define DRV260X_MAX_REG 0x23 #define DRV260X_GO_BIT 0x01 /* Library Selection */ #define DRV260X_LIB_SEL_MASK 0x07 #define DRV260X_LIB_SEL_RAM 0x0 #define DRV260X_LIB_SEL_OD 0x1 #define DRV260X_LIB_SEL_40_60 0x2 #define DRV260X_LIB_SEL_60_80 0x3 #define DRV260X_LIB_SEL_100_140 0x4 #define DRV260X_LIB_SEL_140_PLUS 0x5 #define DRV260X_LIB_SEL_HIZ_MASK 0x10 #define DRV260X_LIB_SEL_HIZ_EN 0x01 #define DRV260X_LIB_SEL_HIZ_DIS 0 /* Mode register */ #define DRV260X_STANDBY (1 << 6) #define DRV260X_STANDBY_MASK 0x40 #define DRV260X_INTERNAL_TRIGGER 0x00 #define DRV260X_EXT_TRIGGER_EDGE 0x01 #define DRV260X_EXT_TRIGGER_LEVEL 0x02 #define DRV260X_PWM_ANALOG_IN 0x03 #define DRV260X_AUDIOHAPTIC 0x04 #define DRV260X_RT_PLAYBACK 0x05 #define DRV260X_DIAGNOSTICS 0x06 #define DRV260X_AUTO_CAL 0x07 /* Audio to Haptics Control */ #define DRV260X_AUDIO_HAPTICS_PEAK_10MS (0 << 2) #define DRV260X_AUDIO_HAPTICS_PEAK_20MS (1 << 2) #define DRV260X_AUDIO_HAPTICS_PEAK_30MS (2 << 2) #define DRV260X_AUDIO_HAPTICS_PEAK_40MS (3 << 2) #define DRV260X_AUDIO_HAPTICS_FILTER_100HZ 0x00 #define DRV260X_AUDIO_HAPTICS_FILTER_125HZ 0x01 #define DRV260X_AUDIO_HAPTICS_FILTER_150HZ 0x02 #define DRV260X_AUDIO_HAPTICS_FILTER_200HZ 0x03 /* Min/Max Input/Output Voltages */ #define DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT 0x19 #define DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT 0x64 #define DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT 0x19 #define DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT 0xFF /* Feedback register */ #define DRV260X_FB_REG_ERM_MODE 0x7f #define DRV260X_FB_REG_LRA_MODE (1 << 7) #define DRV260X_BRAKE_FACTOR_MASK 0x1f #define DRV260X_BRAKE_FACTOR_2X (1 << 0) #define DRV260X_BRAKE_FACTOR_3X (2 << 4) #define DRV260X_BRAKE_FACTOR_4X (3 << 4) #define DRV260X_BRAKE_FACTOR_6X (4 << 4) #define DRV260X_BRAKE_FACTOR_8X (5 << 4) #define DRV260X_BRAKE_FACTOR_16 (6 << 4) #define DRV260X_BRAKE_FACTOR_DIS (7 << 4) #define DRV260X_LOOP_GAIN_LOW 0xf3 #define DRV260X_LOOP_GAIN_MED (1 << 2) #define DRV260X_LOOP_GAIN_HIGH (2 << 2) #define DRV260X_LOOP_GAIN_VERY_HIGH (3 << 2) #define DRV260X_BEMF_GAIN_0 0xfc #define DRV260X_BEMF_GAIN_1 (1 << 0) #define DRV260X_BEMF_GAIN_2 (2 << 0) #define DRV260X_BEMF_GAIN_3 (3 << 0) /* Control 1 register */ #define DRV260X_AC_CPLE_EN (1 << 5) #define DRV260X_STARTUP_BOOST (1 << 7) /* Control 2 register */ #define DRV260X_IDISS_TIME_45 0 #define DRV260X_IDISS_TIME_75 (1 << 0) #define DRV260X_IDISS_TIME_150 (1 << 1) #define DRV260X_IDISS_TIME_225 0x03 #define DRV260X_BLANK_TIME_45 (0 << 2) #define DRV260X_BLANK_TIME_75 (1 << 2) #define DRV260X_BLANK_TIME_150 (2 << 2) #define DRV260X_BLANK_TIME_225 (3 << 2) #define DRV260X_SAMP_TIME_150 (0 << 4) #define DRV260X_SAMP_TIME_200 (1 << 4) #define DRV260X_SAMP_TIME_250 (2 << 4) #define DRV260X_SAMP_TIME_300 (3 << 4) #define DRV260X_BRAKE_STABILIZER (1 << 6) #define DRV260X_UNIDIR_IN (0 << 7) #define DRV260X_BIDIR_IN (1 << 7) /* Control 3 Register */ #define DRV260X_LRA_OPEN_LOOP (1 << 0) #define DRV260X_ANANLOG_IN (1 << 1) #define DRV260X_LRA_DRV_MODE (1 << 2) #define DRV260X_RTP_UNSIGNED_DATA (1 << 3) #define DRV260X_SUPPLY_COMP_DIS (1 << 4) #define DRV260X_ERM_OPEN_LOOP (1 << 5) #define DRV260X_NG_THRESH_0 (0 << 6) #define DRV260X_NG_THRESH_2 (1 << 6) #define DRV260X_NG_THRESH_4 (2 << 6) #define DRV260X_NG_THRESH_8 (3 << 6) /* Control 4 Register */ #define DRV260X_AUTOCAL_TIME_150MS (0 << 4) #define DRV260X_AUTOCAL_TIME_250MS (1 << 4) #define DRV260X_AUTOCAL_TIME_500MS (2 << 4) #define DRV260X_AUTOCAL_TIME_1000MS (3 << 4) /** * struct drv260x_data - * @input_dev - Pointer to the input device * @client - Pointer to the I2C client * @regmap - Register map of the device * @work - Work item used to off load the enable/disable of the vibration * @enable_gpio - Pointer to the gpio used for enable/disabling * @regulator - Pointer to the regulator for the IC * @magnitude - Magnitude of the vibration event * @mode - The operating mode of the IC (LRA_NO_CAL, ERM or LRA) * @library - The vibration library to be used * @rated_voltage - The rated_voltage of the actuator * @overdriver_voltage - The over drive voltage of the actuator **/ struct drv260x_data { struct input_dev *input_dev; struct i2c_client *client; struct regmap *regmap; struct work_struct work; struct gpio_desc *enable_gpio; struct regulator *regulator; u32 magnitude; u32 mode; u32 library; int rated_voltage; int overdrive_voltage; }; static struct reg_default drv260x_reg_defs[] = { { DRV260X_STATUS, 0xe0 }, { DRV260X_MODE, 0x40 }, { DRV260X_RT_PB_IN, 0x00 }, { DRV260X_LIB_SEL, 0x00 }, { DRV260X_WV_SEQ_1, 0x01 }, { DRV260X_WV_SEQ_2, 0x00 }, { DRV260X_WV_SEQ_3, 0x00 }, { DRV260X_WV_SEQ_4, 0x00 }, { DRV260X_WV_SEQ_5, 0x00 }, { DRV260X_WV_SEQ_6, 0x00 }, { DRV260X_WV_SEQ_7, 0x00 }, { DRV260X_WV_SEQ_8, 0x00 }, { DRV260X_GO, 0x00 }, { DRV260X_OVERDRIVE_OFF, 0x00 }, { DRV260X_SUSTAIN_P_OFF, 0x00 }, { DRV260X_SUSTAIN_N_OFF, 0x00 }, { DRV260X_BRAKE_OFF, 0x00 }, { DRV260X_A_TO_V_CTRL, 0x05 }, { DRV260X_A_TO_V_MIN_INPUT, 0x19 }, { DRV260X_A_TO_V_MAX_INPUT, 0xff }, { DRV260X_A_TO_V_MIN_OUT, 0x19 }, { DRV260X_A_TO_V_MAX_OUT, 0xff }, { DRV260X_RATED_VOLT, 0x3e }, { DRV260X_OD_CLAMP_VOLT, 0x8c }, { DRV260X_CAL_COMP, 0x0c }, { DRV260X_CAL_BACK_EMF, 0x6c }, { DRV260X_FEEDBACK_CTRL, 0x36 }, { DRV260X_CTRL1, 0x93 }, { DRV260X_CTRL2, 0xfa }, { DRV260X_CTRL3, 0xa0 }, { DRV260X_CTRL4, 0x20 }, { DRV260X_CTRL5, 0x80 }, { DRV260X_LRA_LOOP_PERIOD, 0x33 }, { DRV260X_VBAT_MON, 0x00 }, { DRV260X_LRA_RES_PERIOD, 0x00 }, }; #define DRV260X_DEF_RATED_VOLT 0x90 #define DRV260X_DEF_OD_CLAMP_VOLT 0x90 /** * Rated and Overdriver Voltages: * Calculated using the formula r = v * 255 / 5.6 * where r is what will be written to the register * and v is the rated or overdriver voltage of the actuator **/ static int drv260x_calculate_voltage(unsigned int voltage) { return (v