From patchwork Thu Mar 5 16:23:08 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roy Im X-Patchwork-Id: 208124 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=DATE_IN_PAST_06_12, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 65614C3F2D1 for ; Fri, 6 Mar 2020 00:17:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1DD6B20714 for ; Fri, 6 Mar 2020 00:17:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726317AbgCFARC (ORCPT ); Thu, 5 Mar 2020 19:17:02 -0500 Received: from mail1.bemta26.messagelabs.com ([85.158.142.2]:46513 "EHLO mail1.bemta26.messagelabs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726358AbgCFARB (ORCPT ); Thu, 5 Mar 2020 19:17:01 -0500 Received: from [100.113.1.43] (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256 bits)) by server-2.bemta.az-a.eu-central-1.aws.symcld.net id 70/E2-54715-676916E5; Fri, 06 Mar 2020 00:16:54 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprOKsWRWlGSWpSXmKPExsVy8MN7Xd3SaYl xBgt6LS2+zD3FYnF40QtGi+bF69ks7n89ymhx89M3VovLu+awWdy9u4rR4uuf3+wW7Rtns1r0 z37NavHuzFN2i/97drBbnO5mtdi8aSqzxc9d81gsbk+czOgg4PH+Riu7x85Zd9k9Nq3qZPO4c 20Pm8e7c+fYPeadDPTYP3cNu8fSG8Ie/X8NPJ7+2Mvs8XmTnMeZtrcsATxRrJl5SfkVCawZ32 fOZiyYMZO54uSXL4wNjJsuMHUxcnEICaxhlFhy8jtLFyMnkFMpcWR9O3sXIwcHr0CEROs/e5A wp4CZxJSGv0wgYSEBU4mn7aEgYTYBHYlHM9czgdgsAioS087cB5siLGAhcaf7NjPIeBGBHhaJ D3f/g+1iFpjKKPHh1S82kCpeAUGJkzOfgHUwC0hIHHzxghniBi2Jc2tWMU5g5J2FpGwWkrIFj EyrGC2TijLTM0pyEzNzdA0NDHQNDY11DXWNDEz0Eqt0E/VSS3WTU/NKihKBsnqJ5cV6xZW5yT kpenmpJZsYgfGVUsh4ZgfjruXv9Q4xSnIwKYny7ohPjBPiS8pPqcxILM6ILyrNSS0+xCjDwaE kwWs9BSgnWJSanlqRlpkDjHWYtAQHj5IIb/RUoDRvcUFibnFmOkTqFKOilDhvKkhCACSRUZoH 1wZLL5cYZaWEeRkZGBiEeApSi3IzS1DlXzGKczAqCfN6g2znycwrgZv+CmgxE9Di+3fiQRaXJ CKkpBqYtJ9yn1yV7Vi7OeOolPCGZhs/1SPLfZeqPFE2/tkee1k6zTDl9dtTVj/sq87fzTihLz u5lGerdPM1eU6FPytv1nM6f9zhsFq65OSq/Yf6GMvkRJ/Jck95mn7nF2dw4ZOY5IlRC7V/Tb/ W/L53qVvuXe/vfya1rFmg9+b9FrM/R16s3W9yaseJvR/9fO9eSq55nDqFpdx5QvwEsZQLSmuu zeYIW+3FXsc41+vZ0Y9coRVqS61veVptYWOcdafyw654pg9H6pusWFf5RMob8+fMX8Oqf0Z8+ WaX+HpGjq3/ty3sdTZqP5ckfX3v0ZuLBQXV0893PdnwfqF2jsWCd1s+zKg0kBDs+lmyJ/xIzQ xjFSWW4oxEQy3mouJEAIhhYl6qAwAA X-Env-Sender: roy.im.opensource@diasemi.com X-Msg-Ref: server-31.tower-229.messagelabs.com!1583453812!553913!4 X-Originating-IP: [193.240.239.45] X-SYMC-ESS-Client-Auth: outbound-route-from=pass X-StarScan-Received: X-StarScan-Version: 9.50.1; banners=-,-,- X-VirusChecked: Checked Received: (qmail 9217 invoked from network); 6 Mar 2020 00:16:53 -0000 Received: from unknown (HELO NB-EX-CASHUB01.diasemi.com) (193.240.239.45) by server-31.tower-229.messagelabs.com with ECDHE-RSA-AES256-SHA384 encrypted SMTP; 6 Mar 2020 00:16:53 -0000 Received: from krsrvapps-03.diasemi.com (10.95.17.51) by NB-EX-CASHUB01.diasemi.com (10.1.16.140) with Microsoft SMTP Server id 14.3.468.0; Fri, 6 Mar 2020 01:16:51 +0100 Received: by krsrvapps-03.diasemi.com (Postfix, from userid 22266) id 5615913F674; Fri, 6 Mar 2020 09:16:50 +0900 (KST) Message-ID: In-Reply-To: References: From: Roy Im Date: Fri, 6 Mar 2020 01:23:08 +0900 Subject: [PATCH V10 3/3] Input: new da7280 haptic driver To: Uwe Kleine-Koenig , Bartosz Golaszewski , Brian Masney , Dmitry Torokhov , Greg KH , Lee Jones , Luca Weiss , Maximilian Luz , Pascal PAILLET-LME , Rob Herring , Samuel Ortiz , Thierry Reding , Thomas Gleixner CC: Support Opensource , , , MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Adds support for the Dialog DA7280 LRA/ERM Haptic Driver with multiple mode and integrated waveform memory and wideband support. It communicates via an I2C bus to the device. Signed-off-by: Roy Im --- v10: - Updated the pwm related function and added some comments. v9: - Removed the header file and put the definitions into the c file. - Updated the pwm code and error logs with %pE v8: - Added changes to support FF_PERIODIC/FF_CUSTOM and FF_CONSTANT. - Updated the dt-related code. - Removed memless related functions. v7: - Added more attributes to handle one value per file. - Replaced and updated the dt-related code and functions called. - Fixed error/functions. - Rebased to v4.19-rc6. v6: No changes. v5: Fixed errors in Kconfig file. v4: Updated code as dt-bindings are changed. v3: No changes. v2: Fixed kbuild error/warning drivers/input/misc/Kconfig | 13 + drivers/input/misc/Makefile | 1 + drivers/input/misc/da7280.c | 1892 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 1906 insertions(+) create mode 100644 drivers/input/misc/da7280.c diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 7e2e658..e2bf442 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -879,4 +879,17 @@ config INPUT_STPMIC1_ONKEY To compile this driver as a module, choose M here: the module will be called stpmic1_onkey. +config INPUT_DA7280_HAPTICS + tristate "Dialog Semiconductor DA7280 haptics support" + depends on INPUT && I2C + select INPUT_FF_MEMLESS + select REGMAP_I2C + help + Say Y to enable support for the Dialog DA7280 haptics driver. + The haptics can be controlled by i2c communication, + or by PWM input, or by GPI. + + To compile this driver as a module, choose M here: the + module will be called da7280. + endif diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 8fd187f..71dc381 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_INPUT_CMA3000) += cma3000_d0x.o obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o obj-$(CONFIG_INPUT_CPCAP_PWRBUTTON) += cpcap-pwrbutton.o +obj-$(CONFIG_INPUT_DA7280_HAPTICS) += da7280.o obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o obj-$(CONFIG_INPUT_DA9063_ONKEY) += da9063_onkey.o diff --git a/drivers/input/misc/da7280.c b/drivers/input/misc/da7280.c new file mode 100644 index 0000000..400163f --- /dev/null +++ b/drivers/input/misc/da7280.c @@ -0,0 +1,1892 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * DA7280 Haptic device driver + * + * Copyright (c) 2020 Dialog Semiconductor. + * Author: Roy Im + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Registers */ +#define DA7280_IRQ_EVENT1 0x03 +#define DA7280_IRQ_EVENT_WARNING_DIAG 0x04 +#define DA7280_IRQ_EVENT_SEQ_DIAG 0x05 +#define DA7280_IRQ_STATUS1 0x06 +#define DA7280_IRQ_MASK1 0x07 +#define DA7280_FRQ_LRA_PER_H 0x0A +#define DA7280_FRQ_LRA_PER_L 0x0B +#define DA7280_ACTUATOR1 0x0C +#define DA7280_ACTUATOR2 0x0D +#define DA7280_ACTUATOR3 0x0E +#define DA7280_CALIB_V2I_H 0x0F +#define DA7280_CALIB_V2I_L 0x10 +#define DA7280_TOP_CFG1 0x13 +#define DA7280_TOP_CFG2 0x14 +#define DA7280_TOP_CFG4 0x16 +#define DA7280_TOP_INT_CFG1 0x17 +#define DA7280_TOP_CTL1 0x22 +#define DA7280_TOP_CTL2 0x23 +#define DA7280_SEQ_CTL2 0x28 +#define DA7280_GPI_0_CTL 0x29 +#define DA7280_GPI_1_CTL 0x2A +#define DA7280_GPI_2_CTL 0x2B +#define DA7280_MEM_CTL1 0x2C +#define DA7280_MEM_CTL2 0x2D +#define DA7280_TOP_CFG5 0x6E +#define DA7280_IRQ_MASK2 0x83 +#define DA7280_SNP_MEM_99 0xE7 + +/* Register field */ + +/* DA7280_IRQ_EVENT1 (Address 0x03) */ +#define DA7280_E_SEQ_CONTINUE_SHIFT 0 +#define DA7280_E_SEQ_CONTINUE_MASK BIT(0) +#define DA7280_E_UVLO_SHIFT 1 +#define DA7280_E_UVLO_MASK BIT(1) +#define DA7280_E_SEQ_DONE_SHIFT 2 +#define DA7280_E_SEQ_DONE_MASK BIT(2) +#define DA7280_E_OVERTEMP_CRIT_SHIFT 3 +#define DA7280_E_OVERTEMP_CRIT_MASK BIT(3) +#define DA7280_E_SEQ_FAULT_SHIFT 4 +#define DA7280_E_SEQ_FAULT_MASK BIT(4) +#define DA7280_E_WARNING_SHIFT 5 +#define DA7280_E_WARNING_MASK BIT(5) +#define DA7280_E_ACTUATOR_FAULT_SHIFT 6 +#define DA7280_E_ACTUATOR_FAULT_MASK BIT(6) +#define DA7280_E_OC_FAULT_SHIFT 7 +#define DA7280_E_OC_FAULT_MASK BIT(7) + +/* DA7280_IRQ_EVENT_WARNING_DIAG (Address 0x04) */ +#define DA7280_E_OVERTEMP_WARN_SHIFT 3 +#define DA7280_E_OVERTEMP_WARN_MASK BIT(3) +#define DA7280_E_MEM_TYPE_SHIFT 4 +#define DA7280_E_MEM_TYPE_MASK BIT(4) +#define DA7280_E_LIM_DRIVE_ACC_SHIFT 6 +#define DA7280_E_LIM_DRIVE_ACC_MASK BIT(6) +#define DA7280_E_LIM_DRIVE_SHIFT 7 +#define DA7280_E_LIM_DRIVE_MASK BIT(7) + +/* DA7280_IRQ_EVENT_PAT_DIAG (Address 0x05) */ +#define DA7280_E_PWM_FAULT_SHIFT 5 +#define DA7280_E_PWM_FAULT_MASK BIT(5) +#define DA7280_E_MEM_FAULT_SHIFT 6 +#define DA7280_E_MEM_FAULT_MASK BIT(6) +#define DA7280_E_SEQ_ID_FAULT_SHIFT 7 +#define DA7280_E_SEQ_ID_FAULT_MASK BIT(7) + +/* DA7280_IRQ_STATUS1 (Address 0x06) */ +#define DA7280_STA_SEQ_CONTINUE_SHIFT 0 +#define DA7280_STA_SEQ_CONTINUE_MASK BIT(0) +#define DA7280_STA_UVLO_VBAT_OK_SHIFT 1 +#define DA7280_STA_UVLO_VBAT_OK_MASK BIT(1) +#define DA7280_STA_SEQ_DONE_SHIFT 2 +#define DA7280_STA_SEQ_DONE_MASK BIT(2) +#define DA7280_STA_OVERTEMP_CRIT_SHIFT 3 +#define DA7280_STA_OVERTEMP_CRIT_MASK BIT(3) +#define DA7280_STA_SEQ_FAULT_SHIFT 4 +#define DA7280_STA_SEQ_FAULT_MASK BIT(4) +#define DA7280_STA_WARNING_SHIFT 5 +#define DA7280_STA_WARNING_MASK BIT(5) +#define DA7280_STA_ACTUATOR_SHIFT 6 +#define DA7280_STA_ACTUATOR_MASK BIT(6) +#define DA7280_STA_OC_SHIFT 7 +#define DA7280_STA_OC_MASK BIT(7) + +/* DA7280_IRQ_MASK1 (Address 0x07) */ +#define DA7280_SEQ_CONTINUE_M_SHIFT 0 +#define DA7280_SEQ_CONTINUE_M_MASK BIT(0) +#define DA7280_E_UVLO_M_SHIFT 1 +#define DA7280_E_UVLO_M_MASK BIT(1) +#define DA7280_SEQ_DONE_M_SHIFT 2 +#define DA7280_SEQ_DONE_M_MASK BIT(2) +#define DA7280_OVERTEMP_CRIT_M_SHIFT 3 +#define DA7280_OVERTEMP_CRIT_M_MASK BIT(3) +#define DA7280_SEQ_FAULT_M_SHIFT 4 +#define DA7280_SEQ_FAULT_M_MASK BIT(4) +#define DA7280_WARNING_M_SHIFT 5 +#define DA7280_WARNING_M_MASK BIT(5) +#define DA7280_ACTUATOR_M_SHIFT 6 +#define DA7280_ACTUATOR_M_MASK BIT(6) +#define DA7280_OC_M_SHIFT 7 +#define DA7280_OC_M_MASK BIT(7) + +/* DA7280_ACTUATOR3 (Address 0x0e) */ +#define DA7280_IMAX_MASK (31 << 0) + +/* DA7280_TOP_CFG1 (Address 0x13) */ +#define DA7280_AMP_PID_EN_SHIFT 0 +#define DA7280_AMP_PID_EN_MASK BIT(0) +#define DA7280_RAPID_STOP_EN_SHIFT 1 +#define DA7280_RAPID_STOP_EN_MASK BIT(1) +#define DA7280_ACCELERATION_EN_SHIFT 2 +#define DA7280_ACCELERATION_EN_MASK BIT(2) +#define DA7280_FREQ_TRACK_EN_SHIFT 3 +#define DA7280_FREQ_TRACK_EN_MASK BIT(3) +#define DA7280_BEMF_SENSE_EN_SHIFT 4 +#define DA7280_BEMF_SENSE_EN_MASK BIT(4) +#define DA7280_ACTUATOR_TYPE_SHIFT 5 +#define DA7280_ACTUATOR_TYPE_MASK BIT(5) + +/* DA7280_TOP_CFG2 (Address 0x14) */ +#define DA7280_FULL_BRAKE_THR_SHIFT 0 +#define DA7280_FULL_BRAKE_THR_MASK (15 << 0) +#define DA7280_MEM_DATA_SIGNED_SHIFT 4 +#define DA7280_MEM_DATA_SIGNED_MASK BIT(4) + +/* DA7280_TOP_CFG4 (Address 0x16) */ +#define DA7280_TST_CALIB_IMPEDANCE_DIS_SHIFT 6 +#define DA7280_TST_CALIB_IMPEDANCE_DIS_MASK BIT(6) +#define DA7280_V2I_FACTOR_FREEZE_SHIFT 7 +#define DA7280_V2I_FACTOR_FREEZE_MASK BIT(7) + +/* DA7280_TOP_INT_CFG1 (Address 0x17) */ +#define DA7280_BEMF_FAULT_LIM_SHIFT 0 +#define DA7280_BEMF_FAULT_LIM_MASK (3 << 0) + +/* DA7280_TOP_CTL1 (Address 0x22) */ +#define DA7280_OPERATION_MODE_SHIFT 0 +#define DA7280_OPERATION_MODE_MASK (7 << 0) +#define DA7280_STANDBY_EN_SHIFT 3 +#define DA7280_STANDBY_EN_MASK BIT(3) +#define DA7280_SEQ_START_SHIFT 4 +#define DA7280_SEQ_START_MASK BIT(4) + +/* DA7280_SEQ_CTL2 (Address 0x28) */ +#define DA7280_PS_SEQ_ID_SHIFT 0 +#define DA7280_PS_SEQ_ID_MASK (15 << 0) +#define DA7280_PS_SEQ_LOOP_SHIFT 4 +#define DA7280_PS_SEQ_LOOP_MASK (15 << 4) + +/* DA7280_GPIO_0_CTL (Address 0x29) */ +#define DA7280_GPI0_POLARITY_SHIFT 0 +#define DA7280_GPI0_MODE_SHIFT 2 +#define DA7280_GPI0_SEQUENCE_ID_SHIFT 3 +#define DA7280_GPI0_SEQUENCE_ID_MASK (15 << 3) + +/* DA7280_GPIO_1_CTL (Address 0x2a) */ +#define DA7280_GPI1_SEQUENCE_ID_SHIFT 3 +#define DA7280_GPI1_SEQUENCE_ID_MASK (15 << 3) + +/* DA7280_GPIO_2_CTL (Address 0x2b) */ +#define DA7280_GPI2_SEQUENCE_ID_SHIFT 3 +#define DA7280_GPI2_SEQUENCE_ID_MASK (15 << 3) + +/* DA7280_MEM_CTL2 (Address 0x2d) */ +#define DA7280_WAV_MEM_LOCK_MASK BIT(7) + +/* DA7280_TOP_CFG5 (Address 0x6e) */ +#define DA7280_V2I_FACTOR_OFFSET_EN_MASK BIT(0) + +/* DA7280_IRQ_MASK2 (Address 0x83) */ +#define DA7280_ADC_SAT_M_MASK BIT(7) + +/* Controls */ + +#define DA7280_VOLTAGE_RATE_MAX 6000000 +#define DA7280_VOLTAGE_RATE_STEP 23400 +#define DA7280_NOMMAX_DFT 0x6B +#define DA7280_ABSMAX_DFT 0x78 + +#define DA7280_IMPD_MAX 1500000000 +#define DA7280_IMPD_DEFAULT 22000000 + +#define DA7280_IMAX_DEFAULT 0x0E +#define DA7280_IMAX_STEP 7200 +#define DA7280_IMAX_LIMIT 252000 + +#define DA7280_RESONT_FREQH_DFT 0x39 +#define DA7280_RESONT_FREQL_DFT 0x32 +#define DA7280_MIN_RESONAT_FREQ_HZ 50 +#define DA7280_MAX_RESONAT_FREQ_HZ 300 +#define DA7280_MIN_PWM_FREQ_KHZ 10 +#define DA7280_MAX_PWM_FREQ_KHZ 250 + +#define DA7280_SEQ_ID_MAX 15 +#define DA7280_SEQ_LOOP_MAX 15 +#define DA7280_GPI_SEQ_ID_DFT 0x0 + +#define DA7280_SNP_MEM_SIZE 100 +#define DA7280_SNP_MEM_MAX DA7280_SNP_MEM_99 + +#define IRQ_NUM 3 + +#define DA7280_SKIP_INIT 0x100 + +#define DA7280_FF_EFFECT_COUNT_MAX 15 + +/* Maximum gain is 0x7fff for PWM mode */ +#define MAX_MAGNITUDE_SHIFT 15 + +enum da7280_haptic_dev_t { + DA7280_LRA = 0, + DA7280_ERM_BAR = 1, + DA7280_ERM_COIN = 2, + DA7280_DEV_MAX, +}; + +enum da7280_op_mode { + DA7280_INACTIVE = 0, + DA7280_DRO_MODE = 1, + DA7280_PWM_MODE = 2, + DA7280_RTWM_MODE = 3, + DA7280_ETWM_MODE = 4, + DA7280_OPMODE_MAX, +}; + +#define DA7280_FF_CONSTANT_DRO 1 +#define DA7280_FF_PERIODIC_PWM 2 +#define DA7280_FF_PERIODIC_RTWM 1 +#define DA7280_FF_PERIODIC_ETWM 2 + +#define DA7280_FF_PERIODIC_MODE DA7280_RTWM_MODE +#define DA7280_FF_CONSTANT_MODE DA7280_DRO_MODE + +enum da7280_custom_effect_param { + DA7280_CUSTOM_DATA_SEQ_ID_IDX = 0, + DA7280_CUSTOM_DATA_SEQ_LOOP_IDX = 1, + DA7280_CUSTOM_DATA_LEN = 2, +}; + +struct da7280_gpi_ctl { + u8 seq_id; + u8 mode; + u8 polarity; +}; + +struct da7280_haptic { + struct regmap *regmap; + struct input_dev *input_dev; + struct device *dev; + struct i2c_client *client; + struct pwm_device *pwm_dev; + + bool legacy; + struct delayed_work work_duration; + struct work_struct work_playback; + struct work_struct work_setgain; + int val; + u16 gain; + u16 new_gain; + + s16 level; + + u8 dev_type; + u8 op_mode; + u8 const_op_mode; + u8 periodic_op_mode; + u16 nommax; + u16 absmax; + u32 imax; + u32 impd; + u32 resonant_freq_h; + u32 resonant_freq_l; + bool bemf_sense_en; + bool freq_track_en; + bool acc_en; + bool rapid_stop_en; + bool amp_pid_en; + u8 ps_seq_id; + u8 ps_seq_loop; + struct da7280_gpi_ctl gpi_ctl[3]; + bool mem_update; + u8 snp_mem[DA7280_SNP_MEM_SIZE]; + u8 enabled; + int length_ms; +}; + +static bool da7280_volatile_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case DA7280_IRQ_EVENT1: + case DA7280_IRQ_EVENT_WARNING_DIAG: + case DA7280_IRQ_EVENT_SEQ_DIAG: + case DA7280_IRQ_STATUS1: + case DA7280_TOP_CTL1: + return true; + default: + return false; + } +} + +static const struct regmap_config da7280_haptic_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = DA7280_SNP_MEM_MAX, + .volatile_reg = da7280_volatile_register, +}; + +static int da7280_haptic_mem_update(struct da7280_haptic *haptics) +{ + int error; + unsigned int val; + + /* It is recommended to update the patterns + * during haptic is not working in order to avoid conflict + */ + error = regmap_read(haptics->regmap, DA7280_IRQ_STATUS1, &val); + if (error) + return error; + if (val & DA7280_STA_WARNING_MASK) { + dev_warn(haptics->dev, + "Warning! Please check HAPTIC status.\n"); + return -EBUSY; + } + + /* Patterns are not updated if the lock bit is enabled */ + val = 0; + error = regmap_read(haptics->regmap, DA7280_MEM_CTL2, &val); + if (error) + return error; + if (~val & DA7280_WAV_MEM_LOCK_MASK) { + dev_warn(haptics->dev, + "Please unlock the bit first\n"); + return -EACCES; + } + + /* Set to Inactive mode to make sure safety */ + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_OPERATION_MODE_MASK, + 0); + if (error) + return error; + + error = regmap_read(haptics->regmap, DA7280_MEM_CTL1, &val); + if (error) + return error; + + return regmap_bulk_write(haptics->regmap, val, + haptics->snp_mem, DA7280_SNP_MEM_MAX - val + 1); +} + +static int da7280_haptic_set_pwm(struct da7280_haptic *haptics, bool enabled) +{ + struct pwm_state state; + u64 period_mag_multi; + int error; + + if (!haptics->gain) { + dev_err(haptics->dev, + "Please set the gain first for the pwm mode\n"); + return -EINVAL; + } + + pwm_get_state(haptics->pwm_dev, &state); + state.enabled = enabled; + if (enabled) { + period_mag_multi = state.period * haptics->gain; + period_mag_multi >>= MAX_MAGNITUDE_SHIFT; + + /* The interpretation of duty cycle depends on the acc_en, + * it should be form 50% to 100% for acc_en = 0. + * See datasheet 'PWM mode' section. + */ + if (!haptics->acc_en) { + period_mag_multi += state.period; + period_mag_multi /= 2; + } + + state.duty_cycle = (unsigned int)period_mag_multi; + } + + error = pwm_apply_state(haptics->pwm_dev, &state); + if (error) + dev_err(haptics->dev, + "failed to apply pwm state: %pE\n", + ERR_PTR(error)); + + return error; +} + +static void da7280_haptic_enable(struct da7280_haptic *haptics) +{ + int error = 0; + + if (haptics->enabled) + return; + + switch (haptics->op_mode) { + case DA7280_DRO_MODE: + /* the valid range check when acc_en is enabled */ + if (haptics->acc_en && haptics->level > 0x7F) + haptics->level = 0x7F; + else if (haptics->level > 0xFF) + haptics->level = 0xFF; + + /* Set driver level + * as a % of ACTUATOR_NOMMAX(nommax) + */ + error = regmap_write(haptics->regmap, + DA7280_TOP_CTL2, + haptics->level); + if (error) { + dev_err(haptics->dev, + "i2c err %pE for driving level (%d)\n", + ERR_PTR(error), haptics->level); + return; + } + break; + case DA7280_PWM_MODE: + if (da7280_haptic_set_pwm(haptics, true)) + return; + break; + case DA7280_RTWM_MODE: + /* The pattern will be played by + * the PS_SEQ_ID and the PS_SEQ_LOOP + */ + case DA7280_ETWM_MODE: + /* The pattern will be played by + * the GPI[N] state, GPI(N)_SEQUENCE_ID + * and the PS_SEQ_LOOP. + * please see the datasheet for the details. + */ + break; + default: + dev_err(haptics->dev, + "Invalid Mode(%d)\n", haptics->op_mode); + return; + } + + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_OPERATION_MODE_MASK, + haptics->op_mode); + if (error) { + dev_err(haptics->dev, + "i2c err for op_mode setting : %pE\n", + ERR_PTR(error)); + return; + } + + if (haptics->op_mode == DA7280_PWM_MODE || + haptics->op_mode == DA7280_RTWM_MODE) { + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_SEQ_START_MASK, + DA7280_SEQ_START_MASK); + if (error) { + dev_err(haptics->dev, + "i2c err for sequence triggering : %pE\n", + ERR_PTR(error)); + return; + } + } + + haptics->enabled = true; + if (haptics->length_ms && haptics->op_mode <= DA7280_PWM_MODE) + schedule_delayed_work(&haptics->work_duration, + msecs_to_jiffies(haptics->length_ms)); +} + +static void da7280_haptic_disable(struct da7280_haptic *haptics) +{ + int error; + + if (!haptics->enabled) + return; + + /* Set to Inactive mode */ + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_OPERATION_MODE_MASK, 0); + if (error) { + dev_err(haptics->dev, + "i2c err for op_mode off : %pE\n", ERR_PTR(error)); + return; + } + + switch (haptics->op_mode) { + case DA7280_DRO_MODE: + error = regmap_write(haptics->regmap, + DA7280_TOP_CTL2, 0); + if (error) { + dev_err(haptics->dev, + "i2c err for DRO mode off : %pE\n", + ERR_PTR(error)); + return; + } + break; + case DA7280_PWM_MODE: + if (da7280_haptic_set_pwm(haptics, false)) + return; + break; + case DA7280_RTWM_MODE: + case DA7280_ETWM_MODE: + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_SEQ_START_MASK, 0); + if (error) { + dev_err(haptics->dev, + "i2c err for RTWM or ETWM mode off: %pE\n", + ERR_PTR(error)); + return; + } + break; + default: + dev_err(haptics->dev, + "Invalid Mode(%d)\n", haptics->op_mode); + return; + } + + haptics->enabled = false; +} + +static void da7280_haptic_work_duration(struct work_struct *work) +{ + struct da7280_haptic *haptics = + container_of(work, struct da7280_haptic, work_duration.work); + + da7280_haptic_disable(haptics); +} + +static void da7280_haptic_work_playback(struct work_struct *work) +{ + struct da7280_haptic *haptics = + container_of(work, struct da7280_haptic, work_playback); + int val = haptics->val; + + if (!!val) + da7280_haptic_enable(haptics); + else + da7280_haptic_disable(haptics); +} + +static void da7280_haptic_work_setgain(struct work_struct *work) +{ + struct da7280_haptic *haptics = + container_of(work, struct da7280_haptic, work_setgain); + u16 gain = haptics->new_gain; + int error = 0; + + if (gain == 0) + return; + + /* DRO and PWM modes support set_gain feature + */ + switch (haptics->op_mode) { + case DA7280_DRO_MODE: + if (haptics->acc_en == 1) { + haptics->level = (u8)(gain * 0x7F / 0x7fff); + } else if (haptics->acc_en == 0) { + haptics->level = (u8)(gain * 0xFF / 0x7fff); + + if (gain <= 0x3FFF) + haptics->level = haptics->level + 0x80; + else if (gain > 0x3FFF) + haptics->level = haptics->level - 0x80; + } else { + dev_err(haptics->dev, "Invalid acc_en %d.\n", + haptics->acc_en); + } + + /* Set driver level + * as a % of ACTUATOR_NOMMAX(nommax) + */ + error = regmap_write(haptics->regmap, + DA7280_TOP_CTL2, + haptics->level); + if (error) { + dev_err(haptics->dev, + "i2c err for driving level set: %pE\n", + ERR_PTR(error)); + return; + } + break; + case DA7280_PWM_MODE: + haptics->gain = gain; + if (haptics->enabled) { + if (da7280_haptic_set_pwm(haptics, true)) + return; + } + break; + default: + dev_err(haptics->dev, + "Invalid Mode(%d). Change to DRM (Constant) mode.\n", + haptics->op_mode); + break; + } +} + +static int da7280_haptics_upload_effect(struct input_dev *dev, + struct ff_effect *effect, + struct ff_effect *old) +{ + struct da7280_haptic *haptics = input_get_drvdata(dev); + int error; + int tmp, i; + unsigned int val; + s16 data[DA7280_SNP_MEM_SIZE] = {0,}; + + switch (effect->type) { + /* DRO/PWM modes support this type */ + case FF_CONSTANT: + haptics->op_mode = haptics->const_op_mode; + /* effect->replay.length should be ms base */ + haptics->length_ms = effect->replay.length; + if (haptics->op_mode == DA7280_DRO_MODE) { + 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, + "Only accept FF_CUSTOM type\n"); + return -EINVAL; + } + + /* + * Load the data and check the length. + * the data will be patterns in this case: 3 < 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 (effect->u.periodic.custom_len == DA7280_CUSTOM_DATA_LEN) + goto set_id_loop; + + if (effect->u.periodic.custom_len < DA7280_CUSTOM_DATA_LEN || + effect->u.periodic.custom_len > DA7280_SNP_MEM_SIZE) { + dev_err(haptics->dev, "Invalid data size\n"); + return -EINVAL; + } + + if (copy_from_user(data, effect->u.periodic.custom_data, + sizeof(s16) * + effect->u.periodic.custom_len)) { + dev_err(haptics->dev, + "custom data load error\n"); + return -EFAULT; + } + + memset(haptics->snp_mem, 0, DA7280_SNP_MEM_SIZE); + + for (i = 0; i < effect->u.periodic.custom_len; i++) { + if (data[i] <= 0xff) { + haptics->snp_mem[i] = (u8)data[i]; + } else { + dev_err(haptics->dev, + "Invalid data in the custom data\n"); + return -EINVAL; + } + } + + error = da7280_haptic_mem_update(haptics); + if (error) { + dev_err(haptics->dev, + "mem update error: %pE\n", + ERR_PTR(error)); + return error; + } + break; + +set_id_loop: + if (copy_from_user(data, effect->u.periodic.custom_data, + sizeof(s16) * DA7280_CUSTOM_DATA_LEN)) { + dev_err(haptics->dev, + "custom id/loop load error\n"); + return -EFAULT; + } + + haptics->ps_seq_id = + data[DA7280_CUSTOM_DATA_SEQ_ID_IDX] <= + DA7280_SEQ_ID_MAX ? + data[DA7280_CUSTOM_DATA_SEQ_ID_IDX] : 0; + + haptics->ps_seq_loop = + data[DA7280_CUSTOM_DATA_SEQ_LOOP_IDX] <= + DA7280_SEQ_LOOP_MAX ? + data[DA7280_CUSTOM_DATA_SEQ_LOOP_IDX] : 0; + + haptics->op_mode = haptics->periodic_op_mode; + + val = haptics->ps_seq_id << DA7280_PS_SEQ_ID_SHIFT | + haptics->ps_seq_loop << DA7280_PS_SEQ_LOOP_SHIFT; + error = regmap_write(haptics->regmap, + DA7280_SEQ_CTL2, val); + if (error) { + dev_err(haptics->dev, + "i2c err for driving level set: %pE\n", + ERR_PTR(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, + "Any effects are not uploaded yet\n"); + return -EPERM; + } + + haptics->val = val; + schedule_work(&haptics->work_playback); + + return 0; +} + +static void da7280_haptics_set_gain(struct input_dev *dev, u16 gain) +{ + struct da7280_haptic *haptics = input_get_drvdata(dev); + + if (gain > 0x7fff) + gain = 0x7fff; + + haptics->new_gain = gain; + + schedule_work(&haptics->work_setgain); +} + +static int da7280_haptic_open(struct input_dev *dev) +{ + struct da7280_haptic *haptics = input_get_drvdata(dev); + 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, + "Failed to open haptic, i2c error : %pE\n", + ERR_PTR(error)); + + return error; +} + +static void da7280_haptic_close(struct input_dev *dev) +{ + struct da7280_haptic *haptics = input_get_drvdata(dev); + int error; + + cancel_delayed_work_sync(&haptics->work_duration); + cancel_work_sync(&haptics->work_playback); + cancel_work_sync(&haptics->work_setgain); + + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_OPERATION_MODE_MASK, 0); + if (error) + goto error_i2c; + + if (haptics->op_mode == DA7280_DRO_MODE) { + error = regmap_write(haptics->regmap, + DA7280_TOP_CTL2, 0); + + if (error) + goto error_i2c; + } + + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_STANDBY_EN_MASK, 0); + if (error) + goto error_i2c; + + return; + +error_i2c: + dev_err(haptics->dev, "DA7280-haptic i2c error : %pE\n", + ERR_PTR(error)); +} + +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; + + dev_warn(dev, "Invalid string - set to default\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; + + dev_warn(dev, "Invalid string - set to default\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; + + dev_warn(dev, "Invalid string - set to default\n"); + return 0; +} + +static u8 da7280_haptic_of_volt_rating_set(u32 val) +{ + u32 voltage; + + voltage = val / DA7280_VOLTAGE_RATE_STEP + 1; + + if (voltage > 0xFF) + return 0xFF; + return (u8)voltage; +} + +static void da7280_parse_properties(struct device *dev, + struct da7280_haptic *haptics) +{ + char gpi_str1[] = "dlg,gpi0-seq-id"; + char gpi_str2[] = "dlg,gpi0-mode"; + char gpi_str3[] = "dlg,gpi0-polarity"; + unsigned int i, mem[DA7280_SNP_MEM_SIZE]; + const char *str; + u32 val; + + if (!device_property_read_string(dev, "dlg,actuator-type", &str)) + haptics->dev_type = + da7280_haptic_of_mode_str(dev, str); + else /* if no property, then use the mode inside chip */ + haptics->dev_type = DA7280_DEV_MAX; + + if (device_property_read_u32(dev, "dlg,const-op-mode", &val) >= 0) + if (val == DA7280_FF_PERIODIC_PWM) + haptics->const_op_mode = DA7280_PWM_MODE; + else + haptics->const_op_mode = DA7280_DRO_MODE; + else + haptics->const_op_mode = DA7280_DRO_MODE; + + if (device_property_read_u32(dev, "dlg,periodic-op-mode", &val) >= 0) + if (val == DA7280_FF_PERIODIC_ETWM) + haptics->periodic_op_mode = DA7280_ETWM_MODE; + else + haptics->periodic_op_mode = DA7280_RTWM_MODE; + else + haptics->periodic_op_mode = DA7280_RTWM_MODE; + + if (device_property_read_u32(dev, "dlg,nom-microvolt", &val) >= 0) + if (val < DA7280_VOLTAGE_RATE_MAX) + haptics->nommax = + da7280_haptic_of_volt_rating_set(val); + else + haptics->nommax = DA7280_SKIP_INIT; + else /* if no property, then use the value inside chip */ + haptics->nommax = DA7280_SKIP_INIT; + + if (device_property_read_u32(dev, "dlg,abs-max-microvolt", + &val) >= 0) + if (val < DA7280_VOLTAGE_RATE_MAX) + haptics->absmax = + da7280_haptic_of_volt_rating_set(val); + else + haptics->absmax = DA7280_SKIP_INIT; + else + haptics->absmax = DA7280_SKIP_INIT; + + if (device_property_read_u32(dev, "dlg,imax-microamp", &val) >= 0) + if (val < DA7280_IMAX_LIMIT) + haptics->imax = (val - 28600) + / DA7280_IMAX_STEP + 1; + else + haptics->imax = DA7280_IMAX_DEFAULT; + else + haptics->imax = DA7280_IMAX_DEFAULT; + + if (device_property_read_u32(dev, "dlg,impd-micro-ohms", &val) >= 0) + if (val <= DA7280_IMPD_MAX) + haptics->impd = val; + else + haptics->impd = DA7280_IMPD_DEFAULT; + else + haptics->impd = DA7280_IMPD_DEFAULT; + + if (device_property_read_u32(dev, "dlg,resonant-freq-hz", + &val) >= 0) { + 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; + } + } else { + haptics->resonant_freq_h = DA7280_SKIP_INIT; + haptics->resonant_freq_l = DA7280_SKIP_INIT; + } + + if (device_property_read_u32(dev, "dlg,ps-seq-id", &val) >= 0) + if (val <= DA7280_SEQ_ID_MAX) + haptics->ps_seq_id = val; + else + haptics->ps_seq_id = 0; + else /* if no property, set to zero as a default do nothing */ + haptics->ps_seq_id = 0; + + if (device_property_read_u32(dev, "dlg,ps-seq-loop", &val) >= 0) + if (val <= DA7280_SEQ_LOOP_MAX) + haptics->ps_seq_loop = val; + else + haptics->ps_seq_loop = 0; + else /* if no property, then do nothing */ + haptics->ps_seq_loop = 0; + + /* GPI0~2 Control */ + for (i = 0; i < 3; i++) { + gpi_str1[7] = '0' + i; + if (device_property_read_u32 (dev, gpi_str1, &val) >= 0) + if (val <= DA7280_SEQ_ID_MAX) + haptics->gpi_ctl[i].seq_id = val; + else + haptics->gpi_ctl[i].seq_id = + DA7280_GPI_SEQ_ID_DFT + i; + else /* if no property, then do nothing */ + haptics->gpi_ctl[i].seq_id = + DA7280_GPI_SEQ_ID_DFT + i; + + gpi_str2[7] = '0' + i; + if (!device_property_read_string(dev, gpi_str2, &str)) + haptics->gpi_ctl[i].mode = + da7280_haptic_of_gpi_mode_str(dev, str); + else + haptics->gpi_ctl[i].mode = 0; + + gpi_str3[7] = '0' + i; + if (!device_property_read_string(dev, gpi_str3, &str)) + haptics->gpi_ctl[i].polarity = + da7280_haptic_of_gpi_pol_str(dev, str); + else + haptics->gpi_ctl[i].polarity = 0; + } + + 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"); + + if (device_property_read_u32_array(dev, "dlg,mem-array", + &mem[0], + DA7280_SNP_MEM_SIZE) >= 0) { + 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\n"); + haptics->mem_update = false; + break; + } + } + } else { + haptics->mem_update = false; + } +} + +static irqreturn_t da7280_irq_handler(int irq, void *data) +{ + struct da7280_haptic *haptics = data; + struct device *dev = haptics->dev; + u8 events[IRQ_NUM]; + int error; + + /* Check what events have happened */ + error = regmap_bulk_read(haptics->regmap, + DA7280_IRQ_EVENT1, + events, IRQ_NUM); + if (error) + goto error_i2c; + + /* Clear events */ + error = regmap_write(haptics->regmap, + DA7280_IRQ_EVENT1, events[0]); + if (error) + goto error_i2c; + + if (events[0] & DA7280_E_SEQ_FAULT_MASK) { + /* Stop first if Haptic is working + * 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) + goto error_i2c; + } + + if (events[0] & DA7280_E_SEQ_DONE_MASK) + haptics->enabled = 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_LIM_DRIVE_ACC_MASK) + dev_warn(dev, "Please Check the mem data format\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"); + } + + return IRQ_HANDLED; + +error_i2c: + dev_err(dev, "da7280 i2c error : %pE\n", ERR_PTR(error)); + return IRQ_NONE; +} + +static int da7280_init(struct da7280_haptic *haptics) +{ + int error, i; + unsigned int val = 0; + u32 v2i_factor; + u8 mask = 0; + + /* If device type is DA7280_DEV_MAX, + * then just use default value inside chip. + */ + if (haptics->dev_type == DA7280_DEV_MAX) { + error = regmap_read(haptics->regmap, DA7280_TOP_CFG1, &val); + if (error) + goto error_i2c; + if (val & DA7280_ACTUATOR_TYPE_MASK) + haptics->dev_type = DA7280_ERM_COIN; + else + haptics->dev_type = DA7280_LRA; + } + + /* Apply user settings */ + if (haptics->dev_type == DA7280_LRA) { + if (haptics->resonant_freq_l != DA7280_SKIP_INIT) { + error = regmap_write(haptics->regmap, + DA7280_FRQ_LRA_PER_H, + haptics->resonant_freq_h); + if (error) + goto error_i2c; + error = regmap_write(haptics->regmap, + DA7280_FRQ_LRA_PER_L, + haptics->resonant_freq_l); + if (error) + goto error_i2c; + } + } 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 error_i2c; + + 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 error_i2c; + + 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 = (haptics->dev_type ? 1 : 0) + << DA7280_ACTUATOR_TYPE_SHIFT | + (haptics->bemf_sense_en ? 1 : 0) + << DA7280_BEMF_SENSE_EN_SHIFT | + (haptics->freq_track_en ? 1 : 0) + << DA7280_FREQ_TRACK_EN_SHIFT | + (haptics->acc_en ? 1 : 0) + << DA7280_ACCELERATION_EN_SHIFT | + (haptics->rapid_stop_en ? 1 : 0) + << DA7280_RAPID_STOP_EN_SHIFT | + (haptics->amp_pid_en ? 1 : 0) + << DA7280_AMP_PID_EN_SHIFT; + + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CFG1, mask, val); + if (error) + goto error_i2c; + + 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 error_i2c; + + 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 error_i2c; + + if (haptics->nommax != DA7280_SKIP_INIT) { + error = regmap_write(haptics->regmap, + DA7280_ACTUATOR1, + haptics->nommax); + if (error) + goto error_i2c; + } + + if (haptics->absmax != DA7280_SKIP_INIT) { + error = regmap_write(haptics->regmap, DA7280_ACTUATOR2, + haptics->absmax); + if (error) + goto error_i2c; + } + + error = regmap_update_bits(haptics->regmap, + DA7280_ACTUATOR3, + DA7280_IMAX_MASK, + haptics->imax); + if (error) + goto error_i2c; + + v2i_factor = + haptics->impd * (haptics->imax + 4) / 1610400; + error = regmap_write(haptics->regmap, + DA7280_CALIB_V2I_L, + v2i_factor & 0xff); + if (error) + goto error_i2c; + error = regmap_write(haptics->regmap, + DA7280_CALIB_V2I_H, + v2i_factor >> 8); + if (error) + goto error_i2c; + + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_STANDBY_EN_MASK, + DA7280_STANDBY_EN_MASK); + if (error) + goto error_i2c; + + if (haptics->mem_update) { + error = da7280_haptic_mem_update(haptics); + if (error) + goto error_i2c; + } + + /* Set PS_SEQ_ID and PS_SEQ_LOOP */ + val = haptics->ps_seq_id << DA7280_PS_SEQ_ID_SHIFT | + haptics->ps_seq_loop << DA7280_PS_SEQ_LOOP_SHIFT; + error = regmap_write(haptics->regmap, + DA7280_SEQ_CTL2, val); + if (error) + goto error_i2c; + + /* GPI(N) CTL */ + for (i = 0; i < 3; i++) { + val = haptics->gpi_ctl[i].seq_id + << DA7280_GPI0_SEQUENCE_ID_SHIFT | + haptics->gpi_ctl[i].mode + << DA7280_GPI0_MODE_SHIFT | + haptics->gpi_ctl[i].polarity + << DA7280_GPI0_POLARITY_SHIFT; + error = regmap_write(haptics->regmap, + DA7280_GPI_0_CTL + i, val); + if (error) + goto error_i2c; + } + + /* 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 error_i2c; + + /* Clear Interrupts */ + error = regmap_write(haptics->regmap, DA7280_IRQ_EVENT1, 0xff); + if (error) + goto error_i2c; + + error = regmap_update_bits(haptics->regmap, + DA7280_IRQ_MASK1, + DA7280_SEQ_FAULT_M_MASK + | DA7280_SEQ_DONE_M_MASK, 0); + if (error) + goto error_i2c; + + haptics->enabled = false; + return 0; + +error_i2c: + dev_err(haptics->dev, + "haptic init - I2C error : %pE\n", ERR_PTR(error)); + return error; +} + +/* Valid format for ps_seq_id + * echo X > ps_seq_id + * ex) echo 2 > /sys/class/..../ps_seq_id + * 0 <= X <= 15. + */ +static ssize_t ps_seq_id_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + long val = 0xff; + int error; + + if (haptics->enabled) + return -EBUSY; + + if (kstrtol(&buf[0], 0, &val) < 0) + goto err; + + error = regmap_update_bits(haptics->regmap, + DA7280_SEQ_CTL2, + DA7280_PS_SEQ_ID_MASK, + (val & 0xf) >> DA7280_PS_SEQ_ID_SHIFT); + if (error) { + dev_err(haptics->dev, + "failed to update register : %pE\n", + ERR_PTR(error)); + return error; + } + + haptics->ps_seq_id = val & 0xf; + + return count; + +err: + dev_err(dev, "Invalid input\n"); + return count; +} + +static ssize_t ps_seq_id_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + int error; + unsigned int val; + + error = regmap_read(haptics->regmap, DA7280_SEQ_CTL2, &val); + if (error) { + dev_err(haptics->dev, + "failed to read register : %pE\n", + ERR_PTR(error)); + return error; + } + val = (val & DA7280_PS_SEQ_ID_MASK) + >> DA7280_PS_SEQ_ID_SHIFT; + + return sprintf(buf, "ps_seq_id is %d\n", val); +} + +/* Valid format for ps_seq_loop + * echo X > ps_seq_loop + * ex) echo 2 > /sys/class/..../ps_seq_loop + * 0 <= X <= 15. + */ +static ssize_t ps_seq_loop_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + long val = 0xff; + int error; + + if (haptics->enabled) + return -EBUSY; + + if (kstrtol(&buf[0], 0, &val) < 0) + goto err; + + error = regmap_update_bits(haptics->regmap, + DA7280_SEQ_CTL2, + DA7280_PS_SEQ_LOOP_MASK, + (val & 0xF) << DA7280_PS_SEQ_LOOP_SHIFT); + if (error) { + dev_err(haptics->dev, + "failed to update register : %pE\n", + ERR_PTR(error)); + return error; + } + + haptics->ps_seq_loop = (val & 0xF); + + return count; +err: + dev_err(dev, "Invalid input value!\n"); + return count; +} + +static ssize_t ps_seq_loop_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + int error; + unsigned int val; + + error = regmap_read(haptics->regmap, DA7280_SEQ_CTL2, &val); + if (error) { + dev_err(haptics->dev, + "failed to read register : %pE\n", + ERR_PTR(error)); + return error; + } + val = (val & DA7280_PS_SEQ_LOOP_MASK) + >> DA7280_PS_SEQ_LOOP_SHIFT; + + return sprintf(buf, "ps_seq_loop is %d\n", val); +} + +/* Valid format for GPIx_SEQUENCE_ID + * echo X > ./gpi_seq_id0 + * Range of X: 0 <= X <= 15 + * ex) + * echo 1 > /sys/class/..../gpi_seq_id0 + * echo 2 > /sys/class/..../gpi_seq_id1 + * echo 3 > /sys/class/..../gpi_seq_id2 + */ +static ssize_t gpi_seq_id0_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + long val = 0xff; + int error; + + if (haptics->enabled) + return -EBUSY; + + if (kstrtol(&buf[0], 0, &val) < 0) + goto err; + + error = regmap_update_bits(haptics->regmap, + DA7280_GPI_0_CTL, + DA7280_GPI0_SEQUENCE_ID_MASK, + (val & 0xf) + << DA7280_GPI0_SEQUENCE_ID_SHIFT); + if (error) { + dev_err(haptics->dev, + "failed to update register : %pE\n", + ERR_PTR(error)); + return error; + } + + haptics->gpi_ctl[0].seq_id = val & 0xf; + + return count; + +err: + dev_err(dev, "Invalid input\n"); + return count; +} + +static ssize_t gpi_seq_id0_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + int error; + unsigned int val; + + error = regmap_read(haptics->regmap, DA7280_GPI_0_CTL, &val); + if (error) { + dev_err(haptics->dev, + "failed to read register : %pE\n", + ERR_PTR(error)); + return error; + } + val = (val & DA7280_GPI0_SEQUENCE_ID_MASK) + >> DA7280_GPI0_SEQUENCE_ID_SHIFT; + + return sprintf(buf, "gpi_seq_id0 is %d\n", val); +} + +static ssize_t gpi_seq_id1_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + long val = 0xff; + int error; + + if (haptics->enabled) + return -EBUSY; + + if (kstrtol(&buf[0], 0, &val) < 0) + goto err; + + error = regmap_update_bits(haptics->regmap, + DA7280_GPI_1_CTL, + DA7280_GPI1_SEQUENCE_ID_MASK, + (val & 0xf) + << DA7280_GPI1_SEQUENCE_ID_SHIFT); + if (error) { + dev_err(haptics->dev, + "failed to update register : %pE\n", + ERR_PTR(error)); + return error; + } + + haptics->gpi_ctl[1].seq_id = val & 0xf; + + return count; + +err: + dev_err(dev, "Invalid input\n"); + return count; +} + +static ssize_t gpi_seq_id1_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + int error; + unsigned int val; + + error = regmap_read(haptics->regmap, DA7280_GPI_1_CTL, &val); + if (error) { + dev_err(haptics->dev, + "failed to read register : %pE\n", + ERR_PTR(error)); + return error; + } + val = (val & DA7280_GPI1_SEQUENCE_ID_MASK) + >> DA7280_GPI1_SEQUENCE_ID_SHIFT; + + return sprintf(buf, "gpi_seq_id1 is %d\n", val); +} + +static ssize_t gpi_seq_id2_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + long val = 0xff; + int error; + + if (haptics->enabled) + return -EBUSY; + + if (kstrtol(&buf[0], 0, &val) < 0) + goto err; + + error = regmap_update_bits(haptics->regmap, + DA7280_GPI_2_CTL, + DA7280_GPI2_SEQUENCE_ID_MASK, + (val & 0xf) + << DA7280_GPI2_SEQUENCE_ID_SHIFT); + if (error) { + dev_err(haptics->dev, + "failed to update register : %pE\n", + ERR_PTR(error)); + return error; + } + + haptics->gpi_ctl[2].seq_id = val & 0xf; + + return count; + +err: + dev_err(dev, "Invalid input\n"); + return count; +} + +static ssize_t gpi_seq_id2_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + int error; + unsigned int val; + + error = regmap_read(haptics->regmap, DA7280_GPI_2_CTL, &val); + if (error) { + dev_err(haptics->dev, + "failed to read register : %pE\n", + ERR_PTR(error)); + return error; + } + val = (val & DA7280_GPI2_SEQUENCE_ID_MASK) + >> DA7280_GPI2_SEQUENCE_ID_SHIFT; + + return sprintf(buf, "gpi_seq_id2 is %d\n", val); +} + +#define MAX_PTN_REGS DA7280_SNP_MEM_SIZE +#define MAX_USER_INPUT_LEN (5 * DA7280_SNP_MEM_SIZE) +struct parse_data_t { + int len; + u8 val[MAX_PTN_REGS]; +}; + +static int da7280_parse_args(struct device *dev, + char *cmd, struct parse_data_t *ptn) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + char *tok; /* used to separate tokens */ + static const char ct[] = " \t"; /* space or tab delimits the tokens */ + int tok_count = 0; /* total number of tokens parsed */ + int i = 0, val; + + ptn->len = 0; + + /* parse the input string */ + while ((tok = strsep(&cmd, ct)) != NULL) { + /* this is a value to be written to the register */ + if (kstrtouint(tok, 0, &val) < 0) { + dev_err(haptics->dev, + "failed to read from %s\n", tok); + break; + } + + if (i < MAX_PTN_REGS) { + ptn->val[i] = val; + i++; + } + tok_count++; + } + + /* decide whether it is a read or write operation based on the + * value of tok_count and count_flag. + * tok_count = 0: no inputs, invalid case. + * tok_count = 1: write one value. + * tok_count > 1: write multiple values/patterns. + */ + switch (tok_count) { + case 0: + return -EINVAL; + case 1: + ptn->len = 1; + break; + default: + ptn->len = i; + } + return 0; +} + +static ssize_t +patterns_store(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t count) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + struct parse_data_t mem; + char cmd[MAX_USER_INPUT_LEN]; + unsigned int val; + int error; + + error = regmap_read(haptics->regmap, DA7280_MEM_CTL1, &val); + if (error) + return error; + + if (count > MAX_USER_INPUT_LEN) + memcpy(cmd, buf, MAX_USER_INPUT_LEN); + else + memcpy(cmd, buf, count); + + /* chop of '\n' introduced by echo at the end of the input */ + if (cmd[count - 1] == '\n') + cmd[count - 1] = '\0'; + + if (da7280_parse_args(dev, cmd, &mem) < 0) + return -EINVAL; + + memset(haptics->snp_mem, 0, DA7280_SNP_MEM_SIZE); + memcpy(haptics->snp_mem, mem.val, mem.len); + + error = da7280_haptic_mem_update(haptics); + if (error) + return error; + + return count; +} + +static DEVICE_ATTR_RW(ps_seq_id); +static DEVICE_ATTR_RW(ps_seq_loop); +static DEVICE_ATTR_RW(gpi_seq_id0); +static DEVICE_ATTR_RW(gpi_seq_id1); +static DEVICE_ATTR_RW(gpi_seq_id2); +static DEVICE_ATTR_WO(patterns); +static struct attribute *da7280_sysfs_attr[] = { + &dev_attr_ps_seq_id.attr, + &dev_attr_ps_seq_loop.attr, + &dev_attr_gpi_seq_id0.attr, + &dev_attr_gpi_seq_id1.attr, + &dev_attr_gpi_seq_id2.attr, + &dev_attr_patterns.attr, + NULL, +}; + +static const struct attribute_group da7280_attr_group = { + .attrs = da7280_sysfs_attr, +}; + +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 ff_device *ff; + struct pwm_state state; + unsigned int period2freq; + int error; + + haptics = devm_kzalloc(dev, sizeof(*haptics), GFP_KERNEL); + if (!haptics) + return -ENOMEM; + haptics->dev = dev; + + if (!client->irq) { + dev_err(dev, "No IRQ configured\n"); + return -EINVAL; + } + + da7280_parse_properties(dev, haptics); + + if (haptics->const_op_mode == DA7280_PWM_MODE) { + haptics->pwm_dev = devm_pwm_get(dev, NULL); + if (IS_ERR(haptics->pwm_dev)) { + dev_err(dev, "failed to get PWM device\n"); + return PTR_ERR(haptics->pwm_dev); + } + + 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 initial PWM state: %pE\n", + ERR_PTR(error)); + return error; + } + + /* Check PWM Period, it must be in 10k ~ 250kHz */ + period2freq = 1000000 / state.period; + if (period2freq < DA7280_MIN_PWM_FREQ_KHZ || + period2freq > DA7280_MAX_PWM_FREQ_KHZ) { + dev_err(dev, "Not supported PWM frequency(%d)\n", + period2freq); + return -EINVAL; + } + } + + INIT_DELAYED_WORK(&haptics->work_duration, da7280_haptic_work_duration); + INIT_WORK(&haptics->work_playback, da7280_haptic_work_playback); + INIT_WORK(&haptics->work_setgain, da7280_haptic_work_setgain); + + haptics->client = client; + i2c_set_clientdata(client, haptics); + + haptics->regmap = + devm_regmap_init_i2c(client, &da7280_haptic_regmap_config); + if (IS_ERR(haptics->regmap)) { + error = PTR_ERR(haptics->regmap); + dev_err(dev, "Failed to allocate register map : %pE\n", + ERR_PTR(error)); + return error; + } + + error = da7280_init(haptics); + if (error) { + dev_err(dev, "failed to initialize device\n"); + 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, "create FF input device failed: %pE\n", + ERR_PTR(error)); + return error; + } + + ff = input_dev->ff; + ff->upload = da7280_haptics_upload_effect; + ff->playback = da7280_haptics_playback; + ff->set_gain = da7280_haptics_set_gain; + + error = input_register_device(input_dev); + if (error) { + dev_err(dev, "failed to register input device\n"); + return error; + } + + error = devm_device_add_group(dev, &da7280_attr_group); + if (error) { + dev_err(dev, "Failed to create sysfs attributes: %pE\n", + ERR_PTR(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\n", client->irq); + + return error; +} + +static int __maybe_unused da7280_suspend(struct device *dev) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + int error = 0; + + mutex_lock(&haptics->input_dev->mutex); + + da7280_haptic_disable(haptics); + + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_STANDBY_EN_MASK, 0); + if (error) + dev_err(haptics->dev, + "I2C error : %pE\n", ERR_PTR(error)); + + mutex_unlock(&haptics->input_dev->mutex); + return error; +} + +static int __maybe_unused da7280_resume(struct device *dev) +{ + struct da7280_haptic *haptics = dev_get_drvdata(dev); + int error = 0; + + mutex_lock(&haptics->input_dev->mutex); + + error = regmap_update_bits(haptics->regmap, + DA7280_TOP_CTL1, + DA7280_STANDBY_EN_MASK, + DA7280_STANDBY_EN_MASK); + if (error) + dev_err(haptics->dev, + "i2c error : %pE\n", ERR_PTR(error)); + + mutex_unlock(&haptics->input_dev->mutex); + return error; +} + +static const struct of_device_id da7280_of_match[] = { + { .compatible = "dlg,da7280", }, + { } +}; +MODULE_DEVICE_TABLE(of, da7280_of_match); + +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 "); +MODULE_LICENSE("GPL");