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1332 lines
34 KiB
1332 lines
34 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* DA7280 Haptic device driver |
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* |
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* Copyright (c) 2020 Dialog Semiconductor. |
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* Author: Roy Im <[email protected]> |
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*/ |
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#include <linux/bitfield.h> |
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#include <linux/bitops.h> |
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#include <linux/err.h> |
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#include <linux/i2c.h> |
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#include <linux/input.h> |
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#include <linux/interrupt.h> |
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#include <linux/module.h> |
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#include <linux/pwm.h> |
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#include <linux/regmap.h> |
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#include <linux/workqueue.h> |
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#include <linux/uaccess.h> |
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/* Registers */ |
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#define DA7280_IRQ_EVENT1 0x03 |
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#define DA7280_IRQ_EVENT_WARNING_DIAG 0x04 |
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#define DA7280_IRQ_EVENT_SEQ_DIAG 0x05 |
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#define DA7280_IRQ_STATUS1 0x06 |
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#define DA7280_IRQ_MASK1 0x07 |
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#define DA7280_FRQ_LRA_PER_H 0x0A |
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#define DA7280_FRQ_LRA_PER_L 0x0B |
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#define DA7280_ACTUATOR1 0x0C |
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#define DA7280_ACTUATOR2 0x0D |
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#define DA7280_ACTUATOR3 0x0E |
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#define DA7280_CALIB_V2I_H 0x0F |
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#define DA7280_CALIB_V2I_L 0x10 |
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#define DA7280_TOP_CFG1 0x13 |
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#define DA7280_TOP_CFG2 0x14 |
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#define DA7280_TOP_CFG4 0x16 |
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#define DA7280_TOP_INT_CFG1 0x17 |
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#define DA7280_TOP_CTL1 0x22 |
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#define DA7280_TOP_CTL2 0x23 |
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#define DA7280_SEQ_CTL2 0x28 |
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#define DA7280_GPI_0_CTL 0x29 |
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#define DA7280_GPI_1_CTL 0x2A |
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#define DA7280_GPI_2_CTL 0x2B |
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#define DA7280_MEM_CTL1 0x2C |
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#define DA7280_MEM_CTL2 0x2D |
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#define DA7280_TOP_CFG5 0x6E |
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#define DA7280_IRQ_MASK2 0x83 |
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#define DA7280_SNP_MEM_99 0xE7 |
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/* Register field */ |
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/* DA7280_IRQ_EVENT1 (Address 0x03) */ |
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#define DA7280_E_SEQ_CONTINUE_MASK BIT(0) |
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#define DA7280_E_UVLO_MASK BIT(1) |
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#define DA7280_E_SEQ_DONE_MASK BIT(2) |
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#define DA7280_E_OVERTEMP_CRIT_MASK BIT(3) |
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#define DA7280_E_SEQ_FAULT_MASK BIT(4) |
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#define DA7280_E_WARNING_MASK BIT(5) |
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#define DA7280_E_ACTUATOR_FAULT_MASK BIT(6) |
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#define DA7280_E_OC_FAULT_MASK BIT(7) |
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/* DA7280_IRQ_EVENT_WARNING_DIAG (Address 0x04) */ |
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#define DA7280_E_OVERTEMP_WARN_MASK BIT(3) |
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#define DA7280_E_MEM_TYPE_MASK BIT(4) |
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#define DA7280_E_LIM_DRIVE_ACC_MASK BIT(6) |
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#define DA7280_E_LIM_DRIVE_MASK BIT(7) |
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/* DA7280_IRQ_EVENT_PAT_DIAG (Address 0x05) */ |
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#define DA7280_E_PWM_FAULT_MASK BIT(5) |
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#define DA7280_E_MEM_FAULT_MASK BIT(6) |
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#define DA7280_E_SEQ_ID_FAULT_MASK BIT(7) |
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/* DA7280_IRQ_STATUS1 (Address 0x06) */ |
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#define DA7280_STA_SEQ_CONTINUE_MASK BIT(0) |
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#define DA7280_STA_UVLO_VBAT_OK_MASK BIT(1) |
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#define DA7280_STA_SEQ_DONE_MASK BIT(2) |
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#define DA7280_STA_OVERTEMP_CRIT_MASK BIT(3) |
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#define DA7280_STA_SEQ_FAULT_MASK BIT(4) |
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#define DA7280_STA_WARNING_MASK BIT(5) |
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#define DA7280_STA_ACTUATOR_MASK BIT(6) |
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#define DA7280_STA_OC_MASK BIT(7) |
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/* DA7280_IRQ_MASK1 (Address 0x07) */ |
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#define DA7280_SEQ_CONTINUE_M_MASK BIT(0) |
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#define DA7280_E_UVLO_M_MASK BIT(1) |
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#define DA7280_SEQ_DONE_M_MASK BIT(2) |
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#define DA7280_OVERTEMP_CRIT_M_MASK BIT(3) |
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#define DA7280_SEQ_FAULT_M_MASK BIT(4) |
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#define DA7280_WARNING_M_MASK BIT(5) |
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#define DA7280_ACTUATOR_M_MASK BIT(6) |
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#define DA7280_OC_M_MASK BIT(7) |
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/* DA7280_ACTUATOR3 (Address 0x0e) */ |
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#define DA7280_IMAX_MASK GENMASK(4, 0) |
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/* DA7280_TOP_CFG1 (Address 0x13) */ |
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#define DA7280_AMP_PID_EN_MASK BIT(0) |
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#define DA7280_RAPID_STOP_EN_MASK BIT(1) |
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#define DA7280_ACCELERATION_EN_MASK BIT(2) |
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#define DA7280_FREQ_TRACK_EN_MASK BIT(3) |
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#define DA7280_BEMF_SENSE_EN_MASK BIT(4) |
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#define DA7280_ACTUATOR_TYPE_MASK BIT(5) |
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/* DA7280_TOP_CFG2 (Address 0x14) */ |
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#define DA7280_FULL_BRAKE_THR_MASK GENMASK(3, 0) |
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#define DA7280_MEM_DATA_SIGNED_MASK BIT(4) |
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/* DA7280_TOP_CFG4 (Address 0x16) */ |
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#define DA7280_TST_CALIB_IMPEDANCE_DIS_MASK BIT(6) |
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#define DA7280_V2I_FACTOR_FREEZE_MASK BIT(7) |
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/* DA7280_TOP_INT_CFG1 (Address 0x17) */ |
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#define DA7280_BEMF_FAULT_LIM_MASK GENMASK(1, 0) |
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/* DA7280_TOP_CTL1 (Address 0x22) */ |
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#define DA7280_OPERATION_MODE_MASK GENMASK(2, 0) |
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#define DA7280_STANDBY_EN_MASK BIT(3) |
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#define DA7280_SEQ_START_MASK BIT(4) |
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/* DA7280_SEQ_CTL2 (Address 0x28) */ |
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#define DA7280_PS_SEQ_ID_MASK GENMASK(3, 0) |
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#define DA7280_PS_SEQ_LOOP_MASK GENMASK(7, 4) |
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/* DA7280_GPIO_0_CTL (Address 0x29) */ |
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#define DA7280_GPI0_POLARITY_MASK GENMASK(1, 0) |
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#define DA7280_GPI0_MODE_MASK BIT(2) |
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#define DA7280_GPI0_SEQUENCE_ID_MASK GENMASK(6, 3) |
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/* DA7280_GPIO_1_CTL (Address 0x2a) */ |
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#define DA7280_GPI1_POLARITY_MASK GENMASK(1, 0) |
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#define DA7280_GPI1_MODE_MASK BIT(2) |
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#define DA7280_GPI1_SEQUENCE_ID_MASK GENMASK(6, 3) |
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/* DA7280_GPIO_2_CTL (Address 0x2b) */ |
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#define DA7280_GPI2_POLARITY_MASK GENMASK(1, 0) |
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#define DA7280_GPI2_MODE_MASK BIT(2) |
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#define DA7280_GPI2_SEQUENCE_ID_MASK GENMASK(6, 3) |
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/* DA7280_MEM_CTL2 (Address 0x2d) */ |
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#define DA7280_WAV_MEM_LOCK_MASK BIT(7) |
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/* DA7280_TOP_CFG5 (Address 0x6e) */ |
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#define DA7280_V2I_FACTOR_OFFSET_EN_MASK BIT(0) |
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/* DA7280_IRQ_MASK2 (Address 0x83) */ |
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#define DA7280_ADC_SAT_M_MASK BIT(7) |
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/* Controls */ |
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#define DA7280_VOLTAGE_RATE_MAX 6000000 |
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#define DA7280_VOLTAGE_RATE_STEP 23400 |
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#define DA7280_NOMMAX_DFT 0x6B |
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#define DA7280_ABSMAX_DFT 0x78 |
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#define DA7280_IMPD_MAX 1500000000 |
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#define DA7280_IMPD_DEFAULT 22000000 |
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#define DA7280_IMAX_DEFAULT 0x0E |
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#define DA7280_IMAX_STEP 7200 |
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#define DA7280_IMAX_LIMIT 252000 |
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#define DA7280_RESONT_FREQH_DFT 0x39 |
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#define DA7280_RESONT_FREQL_DFT 0x32 |
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#define DA7280_MIN_RESONAT_FREQ_HZ 50 |
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#define DA7280_MAX_RESONAT_FREQ_HZ 300 |
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#define DA7280_SEQ_ID_MAX 15 |
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#define DA7280_SEQ_LOOP_MAX 15 |
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#define DA7280_GPI_SEQ_ID_DFT 0 |
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#define DA7280_GPI_SEQ_ID_MAX 2 |
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#define DA7280_SNP_MEM_SIZE 100 |
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#define DA7280_SNP_MEM_MAX DA7280_SNP_MEM_99 |
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#define DA7280_IRQ_NUM 3 |
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#define DA7280_SKIP_INIT 0x100 |
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#define DA7280_FF_EFFECT_COUNT_MAX 15 |
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/* Maximum gain is 0x7fff for PWM mode */ |
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#define DA7280_MAX_MAGNITUDE_SHIFT 15 |
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enum da7280_haptic_dev_t { |
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DA7280_LRA = 0, |
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DA7280_ERM_BAR = 1, |
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DA7280_ERM_COIN = 2, |
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DA7280_DEV_MAX, |
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}; |
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enum da7280_op_mode { |
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DA7280_INACTIVE = 0, |
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DA7280_DRO_MODE = 1, |
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DA7280_PWM_MODE = 2, |
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DA7280_RTWM_MODE = 3, |
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DA7280_ETWM_MODE = 4, |
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DA7280_OPMODE_MAX, |
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}; |
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#define DA7280_FF_CONSTANT_DRO 1 |
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#define DA7280_FF_PERIODIC_PWM 2 |
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#define DA7280_FF_PERIODIC_RTWM 1 |
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#define DA7280_FF_PERIODIC_ETWM 2 |
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#define DA7280_FF_PERIODIC_MODE DA7280_RTWM_MODE |
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#define DA7280_FF_CONSTANT_MODE DA7280_DRO_MODE |
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enum da7280_custom_effect_param { |
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DA7280_CUSTOM_SEQ_ID_IDX = 0, |
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DA7280_CUSTOM_SEQ_LOOP_IDX = 1, |
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DA7280_CUSTOM_DATA_LEN = 2, |
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}; |
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enum da7280_custom_gpi_effect_param { |
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DA7280_CUSTOM_GPI_SEQ_ID_IDX = 0, |
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DA7280_CUSTOM_GPI_NUM_IDX = 2, |
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DA7280_CUSTOM_GP_DATA_LEN = 3, |
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}; |
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struct da7280_gpi_ctl { |
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u8 seq_id; |
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u8 mode; |
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u8 polarity; |
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}; |
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struct da7280_haptic { |
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struct regmap *regmap; |
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struct input_dev *input_dev; |
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struct device *dev; |
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struct i2c_client *client; |
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struct pwm_device *pwm_dev; |
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bool legacy; |
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struct work_struct work; |
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int val; |
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u16 gain; |
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s16 level; |
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u8 dev_type; |
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u8 op_mode; |
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u8 const_op_mode; |
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u8 periodic_op_mode; |
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u16 nommax; |
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u16 absmax; |
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u32 imax; |
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u32 impd; |
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u32 resonant_freq_h; |
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u32 resonant_freq_l; |
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bool bemf_sense_en; |
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bool freq_track_en; |
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bool acc_en; |
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bool rapid_stop_en; |
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bool amp_pid_en; |
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u8 ps_seq_id; |
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u8 ps_seq_loop; |
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struct da7280_gpi_ctl gpi_ctl[3]; |
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bool mem_update; |
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u8 snp_mem[DA7280_SNP_MEM_SIZE]; |
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bool active; |
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bool suspended; |
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}; |
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static bool da7280_volatile_register(struct device *dev, unsigned int reg) |
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{ |
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switch (reg) { |
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case DA7280_IRQ_EVENT1: |
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case DA7280_IRQ_EVENT_WARNING_DIAG: |
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case DA7280_IRQ_EVENT_SEQ_DIAG: |
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case DA7280_IRQ_STATUS1: |
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case DA7280_TOP_CTL1: |
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return true; |
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default: |
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return false; |
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} |
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} |
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static const struct regmap_config da7280_haptic_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = DA7280_SNP_MEM_MAX, |
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.volatile_reg = da7280_volatile_register, |
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}; |
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static int da7280_haptic_mem_update(struct da7280_haptic *haptics) |
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{ |
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unsigned int val; |
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int error; |
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/* The patterns should be updated when haptic is not working */ |
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error = regmap_read(haptics->regmap, DA7280_IRQ_STATUS1, &val); |
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if (error) |
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return error; |
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if (val & DA7280_STA_WARNING_MASK) { |
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dev_warn(haptics->dev, |
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"Warning! Please check HAPTIC status.\n"); |
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return -EBUSY; |
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} |
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/* Patterns are not updated if the lock bit is enabled */ |
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val = 0; |
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error = regmap_read(haptics->regmap, DA7280_MEM_CTL2, &val); |
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if (error) |
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return error; |
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if (~val & DA7280_WAV_MEM_LOCK_MASK) { |
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dev_warn(haptics->dev, "Please unlock the bit first\n"); |
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return -EACCES; |
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} |
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/* Set to Inactive mode to make sure safety */ |
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error = regmap_update_bits(haptics->regmap, |
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DA7280_TOP_CTL1, |
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DA7280_OPERATION_MODE_MASK, |
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0); |
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if (error) |
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return error; |
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error = regmap_read(haptics->regmap, DA7280_MEM_CTL1, &val); |
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if (error) |
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return error; |
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return regmap_bulk_write(haptics->regmap, val, haptics->snp_mem, |
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DA7280_SNP_MEM_MAX - val + 1); |
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} |
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static int da7280_haptic_set_pwm(struct da7280_haptic *haptics, bool enabled) |
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{ |
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struct pwm_state state; |
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u64 period_mag_multi; |
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int error; |
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if (!haptics->gain && enabled) { |
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dev_err(haptics->dev, "Unable to enable pwm with 0 gain\n"); |
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return -EINVAL; |
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} |
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pwm_get_state(haptics->pwm_dev, &state); |
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state.enabled = enabled; |
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if (enabled) { |
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period_mag_multi = (u64)state.period * haptics->gain; |
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period_mag_multi >>= DA7280_MAX_MAGNITUDE_SHIFT; |
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/* |
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* The interpretation of duty cycle depends on the acc_en, |
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* it should be between 50% and 100% for acc_en = 0. |
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* See datasheet 'PWM mode' section. |
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*/ |
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if (!haptics->acc_en) { |
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period_mag_multi += state.period; |
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period_mag_multi /= 2; |
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} |
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state.duty_cycle = period_mag_multi; |
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} |
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error = pwm_apply_state(haptics->pwm_dev, &state); |
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if (error) |
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dev_err(haptics->dev, "Failed to apply pwm state: %d\n", error); |
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return error; |
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} |
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static void da7280_haptic_activate(struct da7280_haptic *haptics) |
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{ |
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int error; |
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if (haptics->active) |
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return; |
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switch (haptics->op_mode) { |
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case DA7280_DRO_MODE: |
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/* the valid range check when acc_en is enabled */ |
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if (haptics->acc_en && haptics->level > 0x7F) |
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haptics->level = 0x7F; |
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else if (haptics->level > 0xFF) |
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haptics->level = 0xFF; |
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/* Set level as a % of ACTUATOR_NOMMAX (nommax) */ |
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error = regmap_write(haptics->regmap, DA7280_TOP_CTL2, |
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haptics->level); |
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if (error) { |
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dev_err(haptics->dev, |
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"Failed to set level to %d: %d\n", |
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haptics->level, error); |
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return; |
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} |
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break; |
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case DA7280_PWM_MODE: |
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if (da7280_haptic_set_pwm(haptics, true)) |
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return; |
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break; |
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case DA7280_RTWM_MODE: |
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/* |
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* The pattern will be played by the PS_SEQ_ID and the |
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* PS_SEQ_LOOP |
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*/ |
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break; |
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|
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case DA7280_ETWM_MODE: |
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/* |
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* The pattern will be played by the GPI[N] state, |
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* GPI(N)_SEQUENCE_ID and the PS_SEQ_LOOP. See the |
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* datasheet for the details. |
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*/ |
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break; |
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default: |
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dev_err(haptics->dev, "Invalid op mode %d\n", haptics->op_mode); |
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return; |
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} |
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|
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error = regmap_update_bits(haptics->regmap, |
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DA7280_TOP_CTL1, |
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DA7280_OPERATION_MODE_MASK, |
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haptics->op_mode); |
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if (error) { |
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dev_err(haptics->dev, |
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"Failed to set operation mode: %d", error); |
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return; |
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} |
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|
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if (haptics->op_mode == DA7280_PWM_MODE || |
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haptics->op_mode == DA7280_RTWM_MODE) { |
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error = regmap_update_bits(haptics->regmap, |
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DA7280_TOP_CTL1, |
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DA7280_SEQ_START_MASK, |
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DA7280_SEQ_START_MASK); |
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if (error) { |
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dev_err(haptics->dev, |
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"Failed to start sequence: %d\n", error); |
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return; |
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} |
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} |
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|
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haptics->active = true; |
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} |
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|
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static void da7280_haptic_deactivate(struct da7280_haptic *haptics) |
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{ |
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int error; |
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|
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if (!haptics->active) |
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return; |
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|
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/* Set to Inactive mode */ |
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error = regmap_update_bits(haptics->regmap, |
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DA7280_TOP_CTL1, |
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DA7280_OPERATION_MODE_MASK, 0); |
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if (error) { |
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dev_err(haptics->dev, |
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"Failed to clear operation mode: %d", error); |
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return; |
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} |
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|
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switch (haptics->op_mode) { |
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case DA7280_DRO_MODE: |
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error = regmap_write(haptics->regmap, |
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DA7280_TOP_CTL2, 0); |
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if (error) { |
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dev_err(haptics->dev, |
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"Failed to disable DRO mode: %d\n", error); |
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return; |
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} |
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break; |
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|
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case DA7280_PWM_MODE: |
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if (da7280_haptic_set_pwm(haptics, false)) |
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return; |
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break; |
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|
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case DA7280_RTWM_MODE: |
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case DA7280_ETWM_MODE: |
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error = regmap_update_bits(haptics->regmap, |
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DA7280_TOP_CTL1, |
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DA7280_SEQ_START_MASK, 0); |
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if (error) { |
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dev_err(haptics->dev, |
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"Failed to disable RTWM/ETWM mode: %d\n", |
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error); |
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return; |
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} |
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break; |
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|
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default: |
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dev_err(haptics->dev, "Invalid op mode %d\n", haptics->op_mode); |
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return; |
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} |
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|
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haptics->active = false; |
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} |
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|
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static void da7280_haptic_work(struct work_struct *work) |
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{ |
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struct da7280_haptic *haptics = |
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container_of(work, struct da7280_haptic, work); |
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int val = haptics->val; |
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|
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if (val) |
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da7280_haptic_activate(haptics); |
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else |
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da7280_haptic_deactivate(haptics); |
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} |
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|
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static int da7280_haptics_upload_effect(struct input_dev *dev, |
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struct ff_effect *effect, |
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struct ff_effect *old) |
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{ |
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struct da7280_haptic *haptics = input_get_drvdata(dev); |
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s16 data[DA7280_SNP_MEM_SIZE] = { 0 }; |
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unsigned int val; |
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int tmp, i, num; |
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int error; |
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|
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/* The effect should be uploaded when haptic is not working */ |
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if (haptics->active) |
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return -EBUSY; |
|
|
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switch (effect->type) { |
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/* DRO/PWM modes support this type */ |
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case FF_CONSTANT: |
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haptics->op_mode = haptics->const_op_mode; |
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if (haptics->op_mode == DA7280_DRO_MODE) { |
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tmp = effect->u.constant.level * 254; |
|
haptics->level = tmp / 0x7FFF; |
|
break; |
|
} |
|
|
|
haptics->gain = effect->u.constant.level <= 0 ? |
|
0 : effect->u.constant.level; |
|
break; |
|
|
|
/* RTWM/ETWM modes support this type */ |
|
case FF_PERIODIC: |
|
if (effect->u.periodic.waveform != FF_CUSTOM) { |
|
dev_err(haptics->dev, |
|
"Device can only accept FF_CUSTOM waveform\n"); |
|
return -EINVAL; |
|
} |
|
|
|
/* |
|
* Load the data and check the length. |
|
* the data will be patterns in this case: 4 < X <= 100, |
|
* and will be saved into the waveform memory inside DA728x. |
|
* If X = 2, the data will be PS_SEQ_ID and PS_SEQ_LOOP. |
|
* If X = 3, the 1st data will be GPIX_SEQUENCE_ID . |
|
*/ |
|
if (effect->u.periodic.custom_len == DA7280_CUSTOM_DATA_LEN) |
|
goto set_seq_id_loop; |
|
|
|
if (effect->u.periodic.custom_len == DA7280_CUSTOM_GP_DATA_LEN) |
|
goto set_gpix_seq_id; |
|
|
|
if (effect->u.periodic.custom_len < DA7280_CUSTOM_DATA_LEN || |
|
effect->u.periodic.custom_len > DA7280_SNP_MEM_SIZE) { |
|
dev_err(haptics->dev, "Invalid waveform data size\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (copy_from_user(data, effect->u.periodic.custom_data, |
|
sizeof(s16) * |
|
effect->u.periodic.custom_len)) |
|
return -EFAULT; |
|
|
|
memset(haptics->snp_mem, 0, DA7280_SNP_MEM_SIZE); |
|
|
|
for (i = 0; i < effect->u.periodic.custom_len; i++) { |
|
if (data[i] < 0 || data[i] > 0xff) { |
|
dev_err(haptics->dev, |
|
"Invalid waveform data %d at offset %d\n", |
|
data[i], i); |
|
return -EINVAL; |
|
} |
|
haptics->snp_mem[i] = (u8)data[i]; |
|
} |
|
|
|
error = da7280_haptic_mem_update(haptics); |
|
if (error) { |
|
dev_err(haptics->dev, |
|
"Failed to upload waveform: %d\n", error); |
|
return error; |
|
} |
|
break; |
|
|
|
set_seq_id_loop: |
|
if (copy_from_user(data, effect->u.periodic.custom_data, |
|
sizeof(s16) * DA7280_CUSTOM_DATA_LEN)) |
|
return -EFAULT; |
|
|
|
if (data[DA7280_CUSTOM_SEQ_ID_IDX] < 0 || |
|
data[DA7280_CUSTOM_SEQ_ID_IDX] > DA7280_SEQ_ID_MAX || |
|
data[DA7280_CUSTOM_SEQ_LOOP_IDX] < 0 || |
|
data[DA7280_CUSTOM_SEQ_LOOP_IDX] > DA7280_SEQ_LOOP_MAX) { |
|
dev_err(haptics->dev, |
|
"Invalid custom id (%d) or loop (%d)\n", |
|
data[DA7280_CUSTOM_SEQ_ID_IDX], |
|
data[DA7280_CUSTOM_SEQ_LOOP_IDX]); |
|
return -EINVAL; |
|
} |
|
|
|
haptics->ps_seq_id = data[DA7280_CUSTOM_SEQ_ID_IDX] & 0x0f; |
|
haptics->ps_seq_loop = data[DA7280_CUSTOM_SEQ_LOOP_IDX] & 0x0f; |
|
haptics->op_mode = haptics->periodic_op_mode; |
|
|
|
val = FIELD_PREP(DA7280_PS_SEQ_ID_MASK, haptics->ps_seq_id) | |
|
FIELD_PREP(DA7280_PS_SEQ_LOOP_MASK, |
|
haptics->ps_seq_loop); |
|
error = regmap_write(haptics->regmap, DA7280_SEQ_CTL2, val); |
|
if (error) { |
|
dev_err(haptics->dev, |
|
"Failed to update PS sequence: %d\n", error); |
|
return error; |
|
} |
|
break; |
|
|
|
set_gpix_seq_id: |
|
if (copy_from_user(data, effect->u.periodic.custom_data, |
|
sizeof(s16) * DA7280_CUSTOM_GP_DATA_LEN)) |
|
return -EFAULT; |
|
|
|
if (data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] < 0 || |
|
data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] > DA7280_SEQ_ID_MAX || |
|
data[DA7280_CUSTOM_GPI_NUM_IDX] < 0 || |
|
data[DA7280_CUSTOM_GPI_NUM_IDX] > DA7280_GPI_SEQ_ID_MAX) { |
|
dev_err(haptics->dev, |
|
"Invalid custom GPI id (%d) or num (%d)\n", |
|
data[DA7280_CUSTOM_GPI_SEQ_ID_IDX], |
|
data[DA7280_CUSTOM_GPI_NUM_IDX]); |
|
return -EINVAL; |
|
} |
|
|
|
num = data[DA7280_CUSTOM_GPI_NUM_IDX] & 0x0f; |
|
haptics->gpi_ctl[num].seq_id = |
|
data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] & 0x0f; |
|
haptics->op_mode = haptics->periodic_op_mode; |
|
|
|
val = FIELD_PREP(DA7280_GPI0_SEQUENCE_ID_MASK, |
|
haptics->gpi_ctl[num].seq_id); |
|
error = regmap_update_bits(haptics->regmap, |
|
DA7280_GPI_0_CTL + num, |
|
DA7280_GPI0_SEQUENCE_ID_MASK, |
|
val); |
|
if (error) { |
|
dev_err(haptics->dev, |
|
"Failed to update GPI sequence: %d\n", error); |
|
return error; |
|
} |
|
break; |
|
|
|
default: |
|
dev_err(haptics->dev, "Unsupported effect type: %d\n", |
|
effect->type); |
|
return -EINVAL; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int da7280_haptics_playback(struct input_dev *dev, |
|
int effect_id, int val) |
|
{ |
|
struct da7280_haptic *haptics = input_get_drvdata(dev); |
|
|
|
if (!haptics->op_mode) { |
|
dev_warn(haptics->dev, "No effects have been uploaded\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (likely(!haptics->suspended)) { |
|
haptics->val = val; |
|
schedule_work(&haptics->work); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int da7280_haptic_start(struct da7280_haptic *haptics) |
|
{ |
|
int error; |
|
|
|
error = regmap_update_bits(haptics->regmap, |
|
DA7280_TOP_CTL1, |
|
DA7280_STANDBY_EN_MASK, |
|
DA7280_STANDBY_EN_MASK); |
|
if (error) { |
|
dev_err(haptics->dev, "Unable to enable device: %d\n", error); |
|
return error; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void da7280_haptic_stop(struct da7280_haptic *haptics) |
|
{ |
|
int error; |
|
|
|
cancel_work_sync(&haptics->work); |
|
|
|
|
|
da7280_haptic_deactivate(haptics); |
|
|
|
error = regmap_update_bits(haptics->regmap, DA7280_TOP_CTL1, |
|
DA7280_STANDBY_EN_MASK, 0); |
|
if (error) |
|
dev_err(haptics->dev, "Failed to disable device: %d\n", error); |
|
} |
|
|
|
static int da7280_haptic_open(struct input_dev *dev) |
|
{ |
|
struct da7280_haptic *haptics = input_get_drvdata(dev); |
|
|
|
return da7280_haptic_start(haptics); |
|
} |
|
|
|
static void da7280_haptic_close(struct input_dev *dev) |
|
{ |
|
struct da7280_haptic *haptics = input_get_drvdata(dev); |
|
|
|
da7280_haptic_stop(haptics); |
|
} |
|
|
|
static u8 da7280_haptic_of_mode_str(struct device *dev, |
|
const char *str) |
|
{ |
|
if (!strcmp(str, "LRA")) { |
|
return DA7280_LRA; |
|
} else if (!strcmp(str, "ERM-bar")) { |
|
return DA7280_ERM_BAR; |
|
} else if (!strcmp(str, "ERM-coin")) { |
|
return DA7280_ERM_COIN; |
|
} else { |
|
dev_warn(dev, "Invalid string - set to LRA\n"); |
|
return DA7280_LRA; |
|
} |
|
} |
|
|
|
static u8 da7280_haptic_of_gpi_mode_str(struct device *dev, |
|
const char *str) |
|
{ |
|
if (!strcmp(str, "Single-pattern")) { |
|
return 0; |
|
} else if (!strcmp(str, "Multi-pattern")) { |
|
return 1; |
|
} else { |
|
dev_warn(dev, "Invalid string - set to Single-pattern\n"); |
|
return 0; |
|
} |
|
} |
|
|
|
static u8 da7280_haptic_of_gpi_pol_str(struct device *dev, |
|
const char *str) |
|
{ |
|
if (!strcmp(str, "Rising-edge")) { |
|
return 0; |
|
} else if (!strcmp(str, "Falling-edge")) { |
|
return 1; |
|
} else if (!strcmp(str, "Both-edge")) { |
|
return 2; |
|
} else { |
|
dev_warn(dev, "Invalid string - set to Rising-edge\n"); |
|
return 0; |
|
} |
|
} |
|
|
|
static u8 da7280_haptic_of_volt_rating_set(u32 val) |
|
{ |
|
u32 voltage = val / DA7280_VOLTAGE_RATE_STEP + 1; |
|
|
|
return min_t(u32, voltage, 0xff); |
|
} |
|
|
|
static void da7280_parse_properties(struct device *dev, |
|
struct da7280_haptic *haptics) |
|
{ |
|
unsigned int i, mem[DA7280_SNP_MEM_SIZE]; |
|
char gpi_str1[] = "dlg,gpi0-seq-id"; |
|
char gpi_str2[] = "dlg,gpi0-mode"; |
|
char gpi_str3[] = "dlg,gpi0-polarity"; |
|
const char *str; |
|
u32 val; |
|
int error; |
|
|
|
/* |
|
* If there is no property, then use the mode programmed into the chip. |
|
*/ |
|
haptics->dev_type = DA7280_DEV_MAX; |
|
error = device_property_read_string(dev, "dlg,actuator-type", &str); |
|
if (!error) |
|
haptics->dev_type = da7280_haptic_of_mode_str(dev, str); |
|
|
|
haptics->const_op_mode = DA7280_DRO_MODE; |
|
error = device_property_read_u32(dev, "dlg,const-op-mode", &val); |
|
if (!error && val == DA7280_FF_PERIODIC_PWM) |
|
haptics->const_op_mode = DA7280_PWM_MODE; |
|
|
|
haptics->periodic_op_mode = DA7280_RTWM_MODE; |
|
error = device_property_read_u32(dev, "dlg,periodic-op-mode", &val); |
|
if (!error && val == DA7280_FF_PERIODIC_ETWM) |
|
haptics->periodic_op_mode = DA7280_ETWM_MODE; |
|
|
|
haptics->nommax = DA7280_SKIP_INIT; |
|
error = device_property_read_u32(dev, "dlg,nom-microvolt", &val); |
|
if (!error && val < DA7280_VOLTAGE_RATE_MAX) |
|
haptics->nommax = da7280_haptic_of_volt_rating_set(val); |
|
|
|
haptics->absmax = DA7280_SKIP_INIT; |
|
error = device_property_read_u32(dev, "dlg,abs-max-microvolt", &val); |
|
if (!error && val < DA7280_VOLTAGE_RATE_MAX) |
|
haptics->absmax = da7280_haptic_of_volt_rating_set(val); |
|
|
|
haptics->imax = DA7280_IMAX_DEFAULT; |
|
error = device_property_read_u32(dev, "dlg,imax-microamp", &val); |
|
if (!error && val < DA7280_IMAX_LIMIT) |
|
haptics->imax = (val - 28600) / DA7280_IMAX_STEP + 1; |
|
|
|
haptics->impd = DA7280_IMPD_DEFAULT; |
|
error = device_property_read_u32(dev, "dlg,impd-micro-ohms", &val); |
|
if (!error && val <= DA7280_IMPD_MAX) |
|
haptics->impd = val; |
|
|
|
haptics->resonant_freq_h = DA7280_SKIP_INIT; |
|
haptics->resonant_freq_l = DA7280_SKIP_INIT; |
|
error = device_property_read_u32(dev, "dlg,resonant-freq-hz", &val); |
|
if (!error) { |
|
if (val < DA7280_MAX_RESONAT_FREQ_HZ && |
|
val > DA7280_MIN_RESONAT_FREQ_HZ) { |
|
haptics->resonant_freq_h = |
|
((1000000000 / (val * 1333)) >> 7) & 0xFF; |
|
haptics->resonant_freq_l = |
|
(1000000000 / (val * 1333)) & 0x7F; |
|
} else { |
|
haptics->resonant_freq_h = DA7280_RESONT_FREQH_DFT; |
|
haptics->resonant_freq_l = DA7280_RESONT_FREQL_DFT; |
|
} |
|
} |
|
|
|
/* If no property, set to zero as default is to do nothing. */ |
|
haptics->ps_seq_id = 0; |
|
error = device_property_read_u32(dev, "dlg,ps-seq-id", &val); |
|
if (!error && val <= DA7280_SEQ_ID_MAX) |
|
haptics->ps_seq_id = val; |
|
|
|
haptics->ps_seq_loop = 0; |
|
error = device_property_read_u32(dev, "dlg,ps-seq-loop", &val); |
|
if (!error && val <= DA7280_SEQ_LOOP_MAX) |
|
haptics->ps_seq_loop = val; |
|
|
|
/* GPI0~2 Control */ |
|
for (i = 0; i <= DA7280_GPI_SEQ_ID_MAX; i++) { |
|
gpi_str1[7] = '0' + i; |
|
haptics->gpi_ctl[i].seq_id = DA7280_GPI_SEQ_ID_DFT + i; |
|
error = device_property_read_u32 (dev, gpi_str1, &val); |
|
if (!error && val <= DA7280_SEQ_ID_MAX) |
|
haptics->gpi_ctl[i].seq_id = val; |
|
|
|
gpi_str2[7] = '0' + i; |
|
haptics->gpi_ctl[i].mode = 0; |
|
error = device_property_read_string(dev, gpi_str2, &str); |
|
if (!error) |
|
haptics->gpi_ctl[i].mode = |
|
da7280_haptic_of_gpi_mode_str(dev, str); |
|
|
|
gpi_str3[7] = '0' + i; |
|
haptics->gpi_ctl[i].polarity = 0; |
|
error = device_property_read_string(dev, gpi_str3, &str); |
|
if (!error) |
|
haptics->gpi_ctl[i].polarity = |
|
da7280_haptic_of_gpi_pol_str(dev, str); |
|
} |
|
|
|
haptics->bemf_sense_en = |
|
device_property_read_bool(dev, "dlg,bemf-sens-enable"); |
|
haptics->freq_track_en = |
|
device_property_read_bool(dev, "dlg,freq-track-enable"); |
|
haptics->acc_en = |
|
device_property_read_bool(dev, "dlg,acc-enable"); |
|
haptics->rapid_stop_en = |
|
device_property_read_bool(dev, "dlg,rapid-stop-enable"); |
|
haptics->amp_pid_en = |
|
device_property_read_bool(dev, "dlg,amp-pid-enable"); |
|
|
|
haptics->mem_update = false; |
|
error = device_property_read_u32_array(dev, "dlg,mem-array", |
|
&mem[0], DA7280_SNP_MEM_SIZE); |
|
if (!error) { |
|
haptics->mem_update = true; |
|
memset(haptics->snp_mem, 0, DA7280_SNP_MEM_SIZE); |
|
for (i = 0; i < DA7280_SNP_MEM_SIZE; i++) { |
|
if (mem[i] <= 0xff) { |
|
haptics->snp_mem[i] = (u8)mem[i]; |
|
} else { |
|
dev_err(haptics->dev, |
|
"Invalid data in mem-array at %d: %x\n", |
|
i, mem[i]); |
|
haptics->mem_update = false; |
|
break; |
|
} |
|
} |
|
} |
|
} |
|
|
|
static irqreturn_t da7280_irq_handler(int irq, void *data) |
|
{ |
|
struct da7280_haptic *haptics = data; |
|
struct device *dev = haptics->dev; |
|
u8 events[DA7280_IRQ_NUM]; |
|
int error; |
|
|
|
/* Check what events have happened */ |
|
error = regmap_bulk_read(haptics->regmap, DA7280_IRQ_EVENT1, |
|
events, sizeof(events)); |
|
if (error) { |
|
dev_err(dev, "failed to read interrupt data: %d\n", error); |
|
goto out; |
|
} |
|
|
|
/* Clear events */ |
|
error = regmap_write(haptics->regmap, DA7280_IRQ_EVENT1, events[0]); |
|
if (error) { |
|
dev_err(dev, "failed to clear interrupts: %d\n", error); |
|
goto out; |
|
} |
|
|
|
if (events[0] & DA7280_E_SEQ_FAULT_MASK) { |
|
/* |
|
* Stop first if haptic is active, otherwise, the fault may |
|
* happen continually even though the bit is cleared. |
|
*/ |
|
error = regmap_update_bits(haptics->regmap, DA7280_TOP_CTL1, |
|
DA7280_OPERATION_MODE_MASK, 0); |
|
if (error) |
|
dev_err(dev, "failed to clear op mode on fault: %d\n", |
|
error); |
|
} |
|
|
|
if (events[0] & DA7280_E_SEQ_DONE_MASK) |
|
haptics->active = false; |
|
|
|
if (events[0] & DA7280_E_WARNING_MASK) { |
|
if (events[1] & DA7280_E_LIM_DRIVE_MASK || |
|
events[1] & DA7280_E_LIM_DRIVE_ACC_MASK) |
|
dev_warn(dev, "Please reduce the driver level\n"); |
|
if (events[1] & DA7280_E_MEM_TYPE_MASK) |
|
dev_warn(dev, "Please check the mem data format\n"); |
|
if (events[1] & DA7280_E_OVERTEMP_WARN_MASK) |
|
dev_warn(dev, "Over-temperature warning\n"); |
|
} |
|
|
|
if (events[0] & DA7280_E_SEQ_FAULT_MASK) { |
|
if (events[2] & DA7280_E_SEQ_ID_FAULT_MASK) |
|
dev_info(dev, "Please reload PS_SEQ_ID & mem data\n"); |
|
if (events[2] & DA7280_E_MEM_FAULT_MASK) |
|
dev_info(dev, "Please reload the mem data\n"); |
|
if (events[2] & DA7280_E_PWM_FAULT_MASK) |
|
dev_info(dev, "Please restart PWM interface\n"); |
|
} |
|
|
|
out: |
|
return IRQ_HANDLED; |
|
} |
|
|
|
static int da7280_init(struct da7280_haptic *haptics) |
|
{ |
|
unsigned int val = 0; |
|
u32 v2i_factor; |
|
int error, i; |
|
u8 mask = 0; |
|
|
|
/* |
|
* If device type is DA7280_DEV_MAX then simply use currently |
|
* programmed mode. |
|
*/ |
|
if (haptics->dev_type == DA7280_DEV_MAX) { |
|
error = regmap_read(haptics->regmap, DA7280_TOP_CFG1, &val); |
|
if (error) |
|
goto out_err; |
|
|
|
haptics->dev_type = val & DA7280_ACTUATOR_TYPE_MASK ? |
|
DA7280_ERM_COIN : DA7280_LRA; |
|
} |
|
|
|
/* Apply user settings */ |
|
if (haptics->dev_type == DA7280_LRA && |
|
haptics->resonant_freq_l != DA7280_SKIP_INIT) { |
|
error = regmap_write(haptics->regmap, DA7280_FRQ_LRA_PER_H, |
|
haptics->resonant_freq_h); |
|
if (error) |
|
goto out_err; |
|
error = regmap_write(haptics->regmap, DA7280_FRQ_LRA_PER_L, |
|
haptics->resonant_freq_l); |
|
if (error) |
|
goto out_err; |
|
} else if (haptics->dev_type == DA7280_ERM_COIN) { |
|
error = regmap_update_bits(haptics->regmap, DA7280_TOP_INT_CFG1, |
|
DA7280_BEMF_FAULT_LIM_MASK, 0); |
|
if (error) |
|
goto out_err; |
|
|
|
mask = DA7280_TST_CALIB_IMPEDANCE_DIS_MASK | |
|
DA7280_V2I_FACTOR_FREEZE_MASK; |
|
val = DA7280_TST_CALIB_IMPEDANCE_DIS_MASK | |
|
DA7280_V2I_FACTOR_FREEZE_MASK; |
|
error = regmap_update_bits(haptics->regmap, DA7280_TOP_CFG4, |
|
mask, val); |
|
if (error) |
|
goto out_err; |
|
|
|
haptics->acc_en = false; |
|
haptics->rapid_stop_en = false; |
|
haptics->amp_pid_en = false; |
|
} |
|
|
|
mask = DA7280_ACTUATOR_TYPE_MASK | |
|
DA7280_BEMF_SENSE_EN_MASK | |
|
DA7280_FREQ_TRACK_EN_MASK | |
|
DA7280_ACCELERATION_EN_MASK | |
|
DA7280_RAPID_STOP_EN_MASK | |
|
DA7280_AMP_PID_EN_MASK; |
|
val = FIELD_PREP(DA7280_ACTUATOR_TYPE_MASK, |
|
(haptics->dev_type ? 1 : 0)) | |
|
FIELD_PREP(DA7280_BEMF_SENSE_EN_MASK, |
|
(haptics->bemf_sense_en ? 1 : 0)) | |
|
FIELD_PREP(DA7280_FREQ_TRACK_EN_MASK, |
|
(haptics->freq_track_en ? 1 : 0)) | |
|
FIELD_PREP(DA7280_ACCELERATION_EN_MASK, |
|
(haptics->acc_en ? 1 : 0)) | |
|
FIELD_PREP(DA7280_RAPID_STOP_EN_MASK, |
|
(haptics->rapid_stop_en ? 1 : 0)) | |
|
FIELD_PREP(DA7280_AMP_PID_EN_MASK, |
|
(haptics->amp_pid_en ? 1 : 0)); |
|
|
|
error = regmap_update_bits(haptics->regmap, DA7280_TOP_CFG1, mask, val); |
|
if (error) |
|
goto out_err; |
|
|
|
error = regmap_update_bits(haptics->regmap, DA7280_TOP_CFG5, |
|
DA7280_V2I_FACTOR_OFFSET_EN_MASK, |
|
haptics->acc_en ? |
|
DA7280_V2I_FACTOR_OFFSET_EN_MASK : 0); |
|
if (error) |
|
goto out_err; |
|
|
|
error = regmap_update_bits(haptics->regmap, |
|
DA7280_TOP_CFG2, |
|
DA7280_MEM_DATA_SIGNED_MASK, |
|
haptics->acc_en ? |
|
0 : DA7280_MEM_DATA_SIGNED_MASK); |
|
if (error) |
|
goto out_err; |
|
|
|
if (haptics->nommax != DA7280_SKIP_INIT) { |
|
error = regmap_write(haptics->regmap, DA7280_ACTUATOR1, |
|
haptics->nommax); |
|
if (error) |
|
goto out_err; |
|
} |
|
|
|
if (haptics->absmax != DA7280_SKIP_INIT) { |
|
error = regmap_write(haptics->regmap, DA7280_ACTUATOR2, |
|
haptics->absmax); |
|
if (error) |
|
goto out_err; |
|
} |
|
|
|
error = regmap_update_bits(haptics->regmap, DA7280_ACTUATOR3, |
|
DA7280_IMAX_MASK, haptics->imax); |
|
if (error) |
|
goto out_err; |
|
|
|
v2i_factor = haptics->impd * (haptics->imax + 4) / 1610400; |
|
error = regmap_write(haptics->regmap, DA7280_CALIB_V2I_L, |
|
v2i_factor & 0xff); |
|
if (error) |
|
goto out_err; |
|
error = regmap_write(haptics->regmap, DA7280_CALIB_V2I_H, |
|
v2i_factor >> 8); |
|
if (error) |
|
goto out_err; |
|
|
|
error = regmap_update_bits(haptics->regmap, |
|
DA7280_TOP_CTL1, |
|
DA7280_STANDBY_EN_MASK, |
|
DA7280_STANDBY_EN_MASK); |
|
if (error) |
|
goto out_err; |
|
|
|
if (haptics->mem_update) { |
|
error = da7280_haptic_mem_update(haptics); |
|
if (error) |
|
goto out_err; |
|
} |
|
|
|
/* Set PS_SEQ_ID and PS_SEQ_LOOP */ |
|
val = FIELD_PREP(DA7280_PS_SEQ_ID_MASK, haptics->ps_seq_id) | |
|
FIELD_PREP(DA7280_PS_SEQ_LOOP_MASK, haptics->ps_seq_loop); |
|
error = regmap_write(haptics->regmap, DA7280_SEQ_CTL2, val); |
|
if (error) |
|
goto out_err; |
|
|
|
/* GPI(N) CTL */ |
|
for (i = 0; i < 3; i++) { |
|
val = FIELD_PREP(DA7280_GPI0_SEQUENCE_ID_MASK, |
|
haptics->gpi_ctl[i].seq_id) | |
|
FIELD_PREP(DA7280_GPI0_MODE_MASK, |
|
haptics->gpi_ctl[i].mode) | |
|
FIELD_PREP(DA7280_GPI0_POLARITY_MASK, |
|
haptics->gpi_ctl[i].polarity); |
|
error = regmap_write(haptics->regmap, |
|
DA7280_GPI_0_CTL + i, val); |
|
if (error) |
|
goto out_err; |
|
} |
|
|
|
/* Mask ADC_SAT_M bit as default */ |
|
error = regmap_update_bits(haptics->regmap, |
|
DA7280_IRQ_MASK2, |
|
DA7280_ADC_SAT_M_MASK, |
|
DA7280_ADC_SAT_M_MASK); |
|
if (error) |
|
goto out_err; |
|
|
|
/* Clear Interrupts */ |
|
error = regmap_write(haptics->regmap, DA7280_IRQ_EVENT1, 0xff); |
|
if (error) |
|
goto out_err; |
|
|
|
error = regmap_update_bits(haptics->regmap, |
|
DA7280_IRQ_MASK1, |
|
DA7280_SEQ_FAULT_M_MASK | |
|
DA7280_SEQ_DONE_M_MASK, |
|
0); |
|
if (error) |
|
goto out_err; |
|
|
|
haptics->active = false; |
|
return 0; |
|
|
|
out_err: |
|
dev_err(haptics->dev, "chip initialization error: %d\n", error); |
|
return error; |
|
} |
|
|
|
static int da7280_probe(struct i2c_client *client, |
|
const struct i2c_device_id *id) |
|
{ |
|
struct device *dev = &client->dev; |
|
struct da7280_haptic *haptics; |
|
struct input_dev *input_dev; |
|
struct pwm_state state; |
|
struct ff_device *ff; |
|
int error; |
|
|
|
if (!client->irq) { |
|
dev_err(dev, "No IRQ configured\n"); |
|
return -EINVAL; |
|
} |
|
|
|
haptics = devm_kzalloc(dev, sizeof(*haptics), GFP_KERNEL); |
|
if (!haptics) |
|
return -ENOMEM; |
|
|
|
haptics->dev = dev; |
|
|
|
da7280_parse_properties(dev, haptics); |
|
|
|
if (haptics->const_op_mode == DA7280_PWM_MODE) { |
|
haptics->pwm_dev = devm_pwm_get(dev, NULL); |
|
error = PTR_ERR_OR_ZERO(haptics->pwm_dev); |
|
if (error) { |
|
if (error != -EPROBE_DEFER) |
|
dev_err(dev, "Unable to request PWM: %d\n", |
|
error); |
|
return error; |
|
} |
|
|
|
/* Sync up PWM state and ensure it is off. */ |
|
pwm_init_state(haptics->pwm_dev, &state); |
|
state.enabled = false; |
|
error = pwm_apply_state(haptics->pwm_dev, &state); |
|
if (error) { |
|
dev_err(dev, "Failed to apply PWM state: %d\n", error); |
|
return error; |
|
} |
|
|
|
/* |
|
* Check PWM period, PWM freq = 1000000 / state.period. |
|
* The valid PWM freq range: 10k ~ 250kHz. |
|
*/ |
|
if (state.period > 100000 || state.period < 4000) { |
|
dev_err(dev, "Unsupported PWM period: %lld\n", |
|
state.period); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
INIT_WORK(&haptics->work, da7280_haptic_work); |
|
|
|
haptics->client = client; |
|
i2c_set_clientdata(client, haptics); |
|
|
|
haptics->regmap = devm_regmap_init_i2c(client, |
|
&da7280_haptic_regmap_config); |
|
error = PTR_ERR_OR_ZERO(haptics->regmap); |
|
if (error) { |
|
dev_err(dev, "Failed to allocate register map: %d\n", error); |
|
return error; |
|
} |
|
|
|
error = da7280_init(haptics); |
|
if (error) { |
|
dev_err(dev, "Failed to initialize device: %d\n", error); |
|
return error; |
|
} |
|
|
|
/* Initialize input device for haptic device */ |
|
input_dev = devm_input_allocate_device(dev); |
|
if (!input_dev) { |
|
dev_err(dev, "Failed to allocate input device\n"); |
|
return -ENOMEM; |
|
} |
|
|
|
input_dev->name = "da7280-haptic"; |
|
input_dev->dev.parent = client->dev.parent; |
|
input_dev->open = da7280_haptic_open; |
|
input_dev->close = da7280_haptic_close; |
|
input_set_drvdata(input_dev, haptics); |
|
haptics->input_dev = input_dev; |
|
|
|
input_set_capability(haptics->input_dev, EV_FF, FF_PERIODIC); |
|
input_set_capability(haptics->input_dev, EV_FF, FF_CUSTOM); |
|
input_set_capability(haptics->input_dev, EV_FF, FF_CONSTANT); |
|
input_set_capability(haptics->input_dev, EV_FF, FF_GAIN); |
|
|
|
error = input_ff_create(haptics->input_dev, |
|
DA7280_FF_EFFECT_COUNT_MAX); |
|
if (error) { |
|
dev_err(dev, "Failed to create FF input device: %d\n", error); |
|
return error; |
|
} |
|
|
|
ff = input_dev->ff; |
|
ff->upload = da7280_haptics_upload_effect; |
|
ff->playback = da7280_haptics_playback; |
|
|
|
error = input_register_device(input_dev); |
|
if (error) { |
|
dev_err(dev, "Failed to register input device: %d\n", error); |
|
return error; |
|
} |
|
|
|
error = devm_request_threaded_irq(dev, client->irq, |
|
NULL, da7280_irq_handler, |
|
IRQF_ONESHOT, |
|
"da7280-haptics", haptics); |
|
if (error) { |
|
dev_err(dev, "Failed to request IRQ %d: %d\n", |
|
client->irq, error); |
|
return error; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int __maybe_unused da7280_suspend(struct device *dev) |
|
{ |
|
struct da7280_haptic *haptics = dev_get_drvdata(dev); |
|
|
|
mutex_lock(&haptics->input_dev->mutex); |
|
|
|
/* |
|
* Make sure no new requests will be submitted while device is |
|
* suspended. |
|
*/ |
|
spin_lock_irq(&haptics->input_dev->event_lock); |
|
haptics->suspended = true; |
|
spin_unlock_irq(&haptics->input_dev->event_lock); |
|
|
|
da7280_haptic_stop(haptics); |
|
|
|
mutex_unlock(&haptics->input_dev->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int __maybe_unused da7280_resume(struct device *dev) |
|
{ |
|
struct da7280_haptic *haptics = dev_get_drvdata(dev); |
|
int retval; |
|
|
|
mutex_lock(&haptics->input_dev->mutex); |
|
|
|
retval = da7280_haptic_start(haptics); |
|
if (!retval) { |
|
spin_lock_irq(&haptics->input_dev->event_lock); |
|
haptics->suspended = false; |
|
spin_unlock_irq(&haptics->input_dev->event_lock); |
|
} |
|
|
|
mutex_unlock(&haptics->input_dev->mutex); |
|
return retval; |
|
} |
|
|
|
#ifdef CONFIG_OF |
|
static const struct of_device_id da7280_of_match[] = { |
|
{ .compatible = "dlg,da7280", }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(of, da7280_of_match); |
|
#endif |
|
|
|
static const struct i2c_device_id da7280_i2c_id[] = { |
|
{ "da7280", }, |
|
{ } |
|
}; |
|
MODULE_DEVICE_TABLE(i2c, da7280_i2c_id); |
|
|
|
static SIMPLE_DEV_PM_OPS(da7280_pm_ops, da7280_suspend, da7280_resume); |
|
|
|
static struct i2c_driver da7280_driver = { |
|
.driver = { |
|
.name = "da7280", |
|
.of_match_table = of_match_ptr(da7280_of_match), |
|
.pm = &da7280_pm_ops, |
|
}, |
|
.probe = da7280_probe, |
|
.id_table = da7280_i2c_id, |
|
}; |
|
module_i2c_driver(da7280_driver); |
|
|
|
MODULE_DESCRIPTION("DA7280 haptics driver"); |
|
MODULE_AUTHOR("Roy Im <[email protected]>"); |
|
MODULE_LICENSE("GPL");
|
|
|