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 <roy.im.opensou...@diasemi.com>

---
v4: Updated code as dt-bindings are changed.

v3: No changes.

v2: Fixed kbuild error/warning


 drivers/input/misc/Kconfig  |   12 +
 drivers/input/misc/Makefile |    1 +
 drivers/input/misc/da7280.c | 1438 +++++++++++++++++++++++++++++++++++++++++++
 drivers/input/misc/da7280.h |  412 +++++++++++++
 4 files changed, 1863 insertions(+)
 create mode 100644 drivers/input/misc/da7280.c
 create mode 100644 drivers/input/misc/da7280.h

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index ca59a2b..6e0de69 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -851,4 +851,16 @@ config INPUT_SC27XX_VIBRA
          To compile this driver as a module, choose M here. The module will
          be called sc27xx_vibra.
 
+config INPUT_DA7280_HAPTICS
+       tristate "Dialog Semiconductor DA7280 haptics support"
+       depends on (INPUT && I2C && SYSFS) || PWM
+       select INPUT_FF_MEMLESS
+       select REGMAP_I2C
+       help
+         Say Y to enable support for the haptics controller on
+         Dialog DA7280 chip.
+
+         To compile this driver as a module, choose M here: the
+         module will be called da7280-haptic.
+
 endif
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 9d0f9d1..d941348 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..da500ab
--- /dev/null
+++ b/drivers/input/misc/da7280.c
@@ -0,0 +1,1438 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DA7280 Haptic device driver
+ *
+ * Copyright (c) 2018 Dialog Semiconductor.
+ * Author: Roy Im <roy.im.opensou...@diasemi.com>
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/pwm.h>
+#include <linux/regmap.h>
+#include <linux/workqueue.h>
+#include "da7280.h"
+
+/* uV unit for voltage rate */
+#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
+/* uA unit step and limit for IMAX*/
+#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_GPI1_SEQ_ID_DEFT        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
+
+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,
+};
+
+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;
+       int pwm_id;
+       struct work_struct work;
+
+       bool suspend_state;
+       unsigned int magnitude;
+
+       u8 dev_type;
+       u8 op_mode;
+       u16 nommax;
+       u16 absmax;
+       u32 imax;
+       u32 impd;
+       u32 resonant_freq_h;
+       u32 resonant_freq_l;
+       u8 bemf_sense_en;
+       u8 freq_track_en;
+       u8 acc_en;
+       u8 rapid_stop_en;
+       u8 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];
+       const struct attribute_group **attr_group;
+};
+
+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 ret;
+       unsigned int val;
+
+       /* It is recommended to update the patterns
+        * during haptic is not working in order to avoid conflict
+        */
+       ret = regmap_read(haptics->regmap, DA7280_IRQ_STATUS1, &val);
+       if (ret)
+               return ret;
+       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;
+       ret = regmap_read(haptics->regmap, DA7280_MEM_CTL2, &val);
+       if (ret)
+               return ret;
+       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 */
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_TOP_CTL1,
+                                DA7280_OPERATION_MODE_MASK,
+                                0);
+       if (ret)
+               return ret;
+
+       ret = regmap_read(haptics->regmap, DA7280_MEM_CTL1, &val);
+       if (ret)
+               return ret;
+
+       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)
+{
+       struct pwm_args pargs;
+       u64 period_mag_multi;
+       unsigned int pwm_duty;
+       int ret;
+
+       pwm_get_args(haptics->pwm_dev, &pargs);
+       period_mag_multi =
+               (u64)(pargs.period * haptics->magnitude);
+       if (haptics->acc_en)
+               pwm_duty =
+                       (unsigned int)(period_mag_multi >> 16);
+       else
+               pwm_duty =
+                       (unsigned int)((period_mag_multi >> 16)
+                               + pargs.period) / 2;
+
+       ret = pwm_config(haptics->pwm_dev,
+                        pwm_duty, pargs.period);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "failed to configure pwm : %d\n", ret);
+               return ret;
+       }
+
+       ret = pwm_enable(haptics->pwm_dev);
+       if (ret) {
+               pwm_disable(haptics->pwm_dev);
+               dev_err(haptics->dev,
+                       "failed to enable haptics pwm device : %d\n", ret);
+       }
+
+       return ret;
+}
+
+static void da7280_haptic_enable(struct da7280_haptic *haptics)
+{
+       int ret = 0;
+
+       switch (haptics->op_mode) {
+       case DA7280_DRO_MODE:
+               /* the valid range check when acc_en is enabled */
+               if (haptics->acc_en && haptics->magnitude > 0x7F)
+                       haptics->magnitude = 0x7F;
+               else if (haptics->magnitude > 0xFF)
+                       haptics->magnitude = 0xFF;
+
+               /* Set driver level
+                * as a % of ACTUATOR_NOMMAX(nommax)
+                */
+               ret = regmap_write(haptics->regmap,
+                                  DA7280_TOP_CTL2,
+                                  haptics->magnitude);
+               if (ret) {
+                       dev_err(haptics->dev,
+                               "i2c err for driving level set : %d\n",
+                               ret);
+                       return;
+               }
+               break;
+       case DA7280_PWM_MODE:
+               if (da7280_haptic_set_pwm(haptics))
+                       return;
+               break;
+       case DA7280_RTWM_MODE:
+               /* PS_SEQ_ID will be played
+                * as many times as the PS_SEQ_LOOP
+                */
+       case DA7280_ETWM_MODE:
+               /* Now users are able to control the GPI(N)
+                * assigned to GPI_0, GPI1 and GPI2 accordingly
+                * please see the datasheet for details.
+                * GPI(N)_SEQUENCE_ID will be played
+                * as many times as the PS_SEQ_LOOP
+                */
+               break;
+       default:
+               dev_err(haptics->dev,
+                       "Invalid Mode(%d)\n", haptics->op_mode);
+               return;
+       }
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_TOP_CTL1,
+                                DA7280_OPERATION_MODE_MASK,
+                                haptics->op_mode);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "i2c err for op_mode setting : %d\n", ret);
+               return;
+       }
+
+       if (haptics->op_mode == DA7280_PWM_MODE ||
+           haptics->op_mode == DA7280_RTWM_MODE) {
+               ret = regmap_update_bits(haptics->regmap,
+                                        DA7280_TOP_CTL1,
+                                        DA7280_SEQ_START_MASK,
+                                        DA7280_SEQ_START_MASK);
+               if (ret)
+                       dev_err(haptics->dev,
+                               "i2c err for sequence triggering : %d\n", ret);
+       }
+}
+
+static void da7280_haptic_disable(struct da7280_haptic *haptics)
+{
+       int ret;
+
+       /* Set to Inactive mode */
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_TOP_CTL1,
+                                DA7280_OPERATION_MODE_MASK, 0);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "i2c err for op_mode off : %d\n", ret);
+               return;
+       }
+
+       switch (haptics->op_mode) {
+       case DA7280_RTWM_MODE:
+       case DA7280_ETWM_MODE:
+               ret = regmap_update_bits(haptics->regmap,
+                                        DA7280_TOP_CTL1,
+                                        DA7280_SEQ_START_MASK, 0);
+               if (ret) {
+                       dev_err(haptics->dev,
+                               "i2c err for RTWM or ETWM mode off : %d\n",
+                               ret);
+                       return;
+               }
+               break;
+       case DA7280_DRO_MODE:
+               ret = regmap_write(haptics->regmap,
+                                  DA7280_TOP_CTL2, 0);
+               if (ret) {
+                       dev_err(haptics->dev,
+                               "i2c err for DRO mode off : %d\n",
+                               ret);
+                       return;
+               }
+               break;
+       case DA7280_PWM_MODE:
+               pwm_disable(haptics->pwm_dev);
+               break;
+       default:
+               dev_err(haptics->dev,
+                       "Invalid Mode(%d)\n", haptics->op_mode);
+               break;
+       }
+}
+
+static void da7280_haptic_work(struct work_struct *work)
+{
+       struct da7280_haptic *haptics =
+                       container_of(work, struct da7280_haptic, work);
+
+       if (haptics->magnitude)
+               da7280_haptic_enable(haptics);
+       else
+               da7280_haptic_disable(haptics);
+}
+
+static int da7280_haptic_play(struct input_dev *dev, void *data,
+                             struct ff_effect *effect)
+{
+       struct da7280_haptic *haptics = input_get_drvdata(dev);
+
+       if (effect->u.rumble.strong_magnitude > 0)
+               haptics->magnitude = effect->u.rumble.strong_magnitude;
+       else if (effect->u.rumble.weak_magnitude > 0)
+               haptics->magnitude = effect->u.rumble.weak_magnitude;
+       else
+               haptics->magnitude = 0;
+
+       schedule_work(&haptics->work);
+
+       return 0;
+}
+
+static int da7280_haptic_open(struct input_dev *dev)
+{
+       struct da7280_haptic *haptics = input_get_drvdata(dev);
+       int ret;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_TOP_CTL1,
+                                DA7280_STANDBY_EN_MASK,
+                                DA7280_STANDBY_EN_MASK);
+       if (ret)
+               dev_err(haptics->dev,
+                       "Failed to open haptic, i2c error : %d\n", ret);
+
+       return ret;
+}
+
+static void da7280_haptic_close(struct input_dev *dev)
+{
+       struct da7280_haptic *haptics = input_get_drvdata(dev);
+       int ret;
+
+       cancel_work_sync(&haptics->work);
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_TOP_CTL1,
+                                DA7280_OPERATION_MODE_MASK, 0);
+       if (ret)
+               goto error_i2c;
+
+       if (haptics->op_mode == DA7280_DRO_MODE) {
+               ret = regmap_write(haptics->regmap,
+                                  DA7280_TOP_CTL2, 0);
+
+               if (ret)
+                       goto error_i2c;
+       }
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_TOP_CTL1,
+                                DA7280_STANDBY_EN_MASK, 0);
+       if (ret)
+               goto error_i2c;
+
+       return;
+
+error_i2c:
+       dev_err(haptics->dev, "DA7280-haptic i2c error : %d\n", ret);
+}
+
+static u8 da7280_haptic_of_mode_str(struct device *dev,
+                                   const char *str)
+{
+       if (!strcmp(str, "LRA-MODE"))
+               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_of_to_pdata(struct device *dev,
+                              struct da7280_haptic *haptics)
+{
+       struct device_node *np = dev->of_node;
+       char dt_gpi_str1[] = "dlg,gpi0-seq-id";
+       char dt_gpi_str2[] = "dlg,gpi0-mode";
+       char dt_gpi_str3[] = "dlg,gpi0-polarity";
+       unsigned int mem[DA7280_SNP_MEM_SIZE];
+       const char *of_str;
+       u32 of_val32;
+       int i;
+
+       if (!of_property_read_string(np, "dlg,vib-mode", &of_str))
+               haptics->dev_type =
+                       da7280_haptic_of_mode_str(dev, of_str);
+       else /* if no property, then use the mode inside chip */
+               haptics->dev_type = DA7280_DEV_MAX;
+
+       if (of_property_read_u32(np, "dlg,op-mode", &of_val32) >= 0)
+               if (of_val32 && of_val32 < DA7280_OPMODE_MAX)
+                       haptics->op_mode = of_val32;
+               else
+                       haptics->op_mode = DA7280_DRO_MODE;
+       else
+               haptics->op_mode = DA7280_DRO_MODE;
+
+       if (of_property_read_u32(np, "dlg,nom-microvolt", &of_val32) >= 0)
+               if (of_val32 < DA7280_VOLTAGE_RATE_MAX)
+                       haptics->nommax =
+                               da7280_haptic_of_volt_rating_set(of_val32);
+               else
+                       haptics->nommax = DA7280_SKIP_INIT;
+       else /* if no property, then use the value inside chip */
+               haptics->nommax = DA7280_SKIP_INIT;
+
+       if (of_property_read_u32(np, "dlg,abs-max-microvolt", &of_val32) >= 0)
+               if (of_val32 < DA7280_VOLTAGE_RATE_MAX)
+                       haptics->absmax =
+                               da7280_haptic_of_volt_rating_set(of_val32);
+               else
+                       haptics->absmax = DA7280_SKIP_INIT;
+       else
+               haptics->absmax = DA7280_SKIP_INIT;
+
+       if (of_property_read_u32(np, "dlg,imax-microamp", &of_val32) >= 0)
+               if (of_val32 < DA7280_IMAX_LIMIT)
+                       haptics->imax = (of_val32 - 28600)
+                                       / DA7280_IMAX_STEP + 1;
+               else
+                       haptics->imax = DA7280_IMAX_DEFAULT;
+       else
+               haptics->imax = DA7280_IMAX_DEFAULT;
+
+       if (of_property_read_u32(np, "dlg,impd-micro-ohms", &of_val32) >= 0)
+               if (of_val32 <= DA7280_IMPD_MAX)
+                       haptics->impd = of_val32;
+               else
+                       haptics->impd = DA7280_IMPD_DEFAULT;
+       else
+               haptics->impd = DA7280_IMPD_DEFAULT;
+
+       if (of_property_read_u32(np, "dlg,resonant-freq-hz", &of_val32) >= 0) {
+               if (of_val32 < DA7280_MAX_RESONAT_FREQ_HZ &&
+                   of_val32 > DA7280_MIN_RESONAT_FREQ_HZ) {
+                       haptics->resonant_freq_h =
+                               ((1000000000 / (of_val32 * 1333)) >> 7) & 0xFF;
+                       haptics->resonant_freq_l =
+                               (1000000000 / (of_val32 * 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 (of_property_read_u32(np, "dlg,ps-seq-id", &of_val32) >= 0)
+               if (of_val32 <= DA7280_SEQ_ID_MAX)
+                       haptics->ps_seq_id = of_val32;
+               else
+                       haptics->ps_seq_id = 0;
+       else /* if no property, set to zero as a default do nothing */
+               haptics->ps_seq_id = 0;
+
+       if (of_property_read_u32(np, "dlg,ps-seq-loop", &of_val32) >= 0)
+               if (of_val32 <= DA7280_SEQ_LOOP_MAX)
+                       haptics->ps_seq_loop = of_val32;
+               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++) {
+               dt_gpi_str1[7] = '0' + i;
+               if (of_property_read_u32(np, dt_gpi_str1, &of_val32) >= 0)
+                       if (of_val32 <= DA7280_SEQ_ID_MAX)
+                               haptics->gpi_ctl[i].seq_id = of_val32;
+                       else
+                               haptics->gpi_ctl[i].seq_id =
+                                       DA7280_GPI1_SEQ_ID_DEFT + i;
+               else /* if no property, then do nothing */
+                       haptics->gpi_ctl[i].seq_id =
+                               DA7280_GPI1_SEQ_ID_DEFT + i;
+
+               dt_gpi_str2[7] = '0' + i;
+               if (!of_property_read_string(np, dt_gpi_str2, &of_str))
+                       haptics->gpi_ctl[i].mode =
+                               da7280_haptic_of_gpi_mode_str(dev, of_str);
+               else
+                       haptics->gpi_ctl[i].mode = 0;
+
+               dt_gpi_str3[7] = '0' + i;
+               if (!of_property_read_string(np, dt_gpi_str3, &of_str))
+                       haptics->gpi_ctl[i].polarity =
+                               da7280_haptic_of_gpi_pol_str(dev, of_str);
+               else
+                       haptics->gpi_ctl[i].polarity = 0;
+       }
+
+       haptics->bemf_sense_en =
+               of_property_read_bool(np, "dlg,bemf-sens-enable");
+       haptics->freq_track_en =
+               of_property_read_bool(np, "dlg,freq-track-enable");
+       haptics->acc_en =
+               of_property_read_bool(np, "dlg,acc-enable");
+       haptics->rapid_stop_en =
+               of_property_read_bool(np, "dlg,rapid-stop-enable");
+       haptics->amp_pid_en =
+               of_property_read_bool(np, "dlg,amp-pid-enable");
+
+       if (of_property_read_u32_array(np, "dlg,mem-array",
+                                      &mem[0], DA7280_SNP_MEM_SIZE) >= 0) {
+               haptics->mem_update = 1;
+               for (i = 0; i < DA7280_SNP_MEM_SIZE; i++) {
+                       if (mem[i] > 0xff)
+                               haptics->snp_mem[i] = 0x0;
+                       else
+                               haptics->snp_mem[i] = (u8)mem[i];
+               }
+       } else {
+               haptics->mem_update = 0;
+       }
+}
+
+static irqreturn_t da7280_irq_handler(int irq, void *data)
+{
+       struct da7280_haptic *haptics = data;
+       u8 events[IRQ_NUM];
+       int ret;
+
+       /* Check what events have happened */
+       ret = regmap_bulk_read(haptics->regmap,
+                              DA7280_IRQ_EVENT1,
+                              events, IRQ_NUM);
+       if (ret)
+               goto error_i2c;
+
+       /* Empty check due to shared interrupt */
+       if ((events[0] | events[1] | events[2]) == 0x00)
+               return IRQ_HANDLED;
+
+       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.
+                */
+               ret = regmap_update_bits(haptics->regmap,
+                                        DA7280_TOP_CTL1,
+                                        DA7280_OPERATION_MODE_MASK, 0);
+               if (ret)
+                       goto error_i2c;
+       }
+
+       /* Clear events */
+       ret = regmap_write(haptics->regmap,
+                          DA7280_IRQ_EVENT1, events[0]);
+       if (ret)
+               goto error_i2c;
+
+       return IRQ_HANDLED;
+
+error_i2c:
+       dev_err(haptics->dev, "da7280 i2c error : %d\n", ret);
+       return IRQ_NONE;
+}
+
+static int da7280_init(struct da7280_haptic *haptics)
+{
+       int ret, i;
+       unsigned int val = 0;
+       u32 v2i_factor;
+       u8 mask = 0;
+
+       /* If device type is DA7280_DEV_MAX,
+        * then skip to initialze and use default value inside chip.
+        */
+       if (haptics->dev_type == DA7280_DEV_MAX) {
+               ret = regmap_read(haptics->regmap, DA7280_TOP_CFG1, &val);
+               if (ret)
+                       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) {
+                       ret = regmap_write(haptics->regmap,
+                                          DA7280_FRQ_LRA_PER_H,
+                                          haptics->resonant_freq_h);
+                       if (ret)
+                               goto error_i2c;
+                       ret = regmap_write(haptics->regmap,
+                                          DA7280_FRQ_LRA_PER_L,
+                                          haptics->resonant_freq_l);
+                       if (ret)
+                               goto error_i2c;
+               }
+       } else if (haptics->dev_type == DA7280_ERM_COIN) {
+               ret = regmap_update_bits(haptics->regmap,
+                                        DA7280_TOP_INT_CFG1,
+                                        DA7280_BEMF_FAULT_LIM_MASK, 0);
+               if (ret)
+                       goto error_i2c;
+
+               ret = regmap_update_bits(haptics->regmap,
+                                        DA7280_TOP_CFG4,
+                                        DA7280_TST_CALIB_IMPEDANCE_DIS_MASK |
+                                        DA7280_V2I_FACTOR_FREEZE_MASK,
+                                        DA7280_TST_CALIB_IMPEDANCE_DIS_MASK |
+                                        DA7280_V2I_FACTOR_FREEZE_MASK);
+               if (ret)
+                       goto error_i2c;
+
+               haptics->acc_en = 0;
+               haptics->rapid_stop_en = 0;
+               haptics->amp_pid_en = 0;
+       }
+
+       /* Should be set to 0 only
+        * in custom waveform and wideband operation
+        */
+       if (haptics->op_mode >= DA7280_RTWM_MODE)
+               haptics->bemf_sense_en = 0;
+
+       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;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_TOP_CFG1, mask, val);
+       if (ret)
+               goto error_i2c;
+
+       if (haptics->nommax != DA7280_SKIP_INIT) {
+               ret = regmap_write(haptics->regmap,
+                                  DA7280_ACTUATOR1,
+                                  haptics->nommax);
+               if (ret)
+                       goto error_i2c;
+       }
+
+       if (haptics->absmax != DA7280_SKIP_INIT) {
+               ret = regmap_write(haptics->regmap, DA7280_ACTUATOR2,
+                                  haptics->absmax);
+               if (ret)
+                       goto error_i2c;
+       }
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_ACTUATOR3,
+                                DA7280_IMAX_MASK,
+                                haptics->imax);
+       if (ret)
+               goto error_i2c;
+
+       v2i_factor =
+               haptics->impd * (haptics->imax + 4) / 1610400;
+       ret = regmap_write(haptics->regmap,
+                          DA7280_CALIB_V2I_L,
+                          v2i_factor & 0xff);
+       if (ret)
+               goto error_i2c;
+       ret = regmap_write(haptics->regmap,
+                          DA7280_CALIB_V2I_H,
+                          v2i_factor >> 8);
+       if (ret)
+               goto error_i2c;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_TOP_CTL1,
+                                DA7280_STANDBY_EN_MASK,
+                                DA7280_STANDBY_EN_MASK);
+       if (ret)
+               goto error_i2c;
+
+       if (haptics->mem_update) {
+               ret = da7280_haptic_mem_update(haptics);
+               if (ret)
+                       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;
+       ret = regmap_write(haptics->regmap,
+                          DA7280_SEQ_CTL2, val);
+       if (ret)
+               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;
+               ret = regmap_write(haptics->regmap,
+                                  DA7280_GPI_0_CTL + i, val);
+               if (ret)
+                       goto error_i2c;
+       }
+
+       /* Clear Interrupts */
+       ret = regmap_write(haptics->regmap, DA7280_IRQ_EVENT1, 0xff);
+       if (ret)
+               goto error_i2c;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_IRQ_MASK1,
+                                DA7280_SEQ_FAULT_M_MASK
+                                | DA7280_SEQ_DONE_M_MASK, 0);
+       if (ret)
+               goto error_i2c;
+
+       haptics->suspend_state = 0;
+       return 0;
+
+error_i2c:
+       dev_err(haptics->dev, "haptic init - I2C error : %d\n", ret);
+       return ret;
+}
+
+/* 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 ret;
+
+       if (kstrtol(&buf[0], 0, &val) < 0)
+               goto err;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_SEQ_CTL2,
+                                DA7280_PS_SEQ_ID_MASK,
+                                (val & 0xf) >> DA7280_PS_SEQ_ID_SHIFT);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "failed to update register : %d\n", ret);
+               return ret;
+       }
+
+       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 ret;
+       unsigned int val;
+
+       ret = regmap_read(haptics->regmap, DA7280_SEQ_CTL2, &val);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "failed to read register : %d\n", ret);
+               return ret;
+       }
+       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 ret;
+
+       if (kstrtol(&buf[0], 0, &val) < 0)
+               goto err;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_SEQ_CTL2,
+                                DA7280_PS_SEQ_LOOP_MASK,
+                                (val & 0xF) << DA7280_PS_SEQ_LOOP_SHIFT);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "failed to update register : %d\n", ret);
+               return ret;
+       }
+
+       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 ret;
+       unsigned int val;
+
+       ret = regmap_read(haptics->regmap, DA7280_SEQ_CTL2, &val);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "failed to read register : %d\n", ret);
+               return ret;
+       }
+       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 Y > gpi_seq_id
+ * ex) echo 2 15 > /sys/class/..../gpi_seq_id
+ * 0 <= X < 3, 0<= Y <= 15.
+ */
+static ssize_t gpi_seq_id_store(struct device *dev,
+                               struct device_attribute *attr,
+                               const char *buf,
+                               size_t count)
+{
+       struct da7280_haptic *haptics = dev_get_drvdata(dev);
+       u8 gpi_num = 0xff;
+       long seq_id = 0xff;
+       int ret;
+
+       if (count < 4)
+               goto err;
+
+       if (buf[0] >= '0')
+               gpi_num = buf[0] - '0';
+       else
+               goto err;
+
+       if (buf[1] != ' ')
+               goto err;
+
+       if (kstrtol(&buf[2], 0, &seq_id) < 0)
+               goto err;
+
+       if (gpi_num > 2 || seq_id > 0xf)
+               goto err;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_GPI_0_CTL + gpi_num,
+                                DA7280_GPI0_SEQUENCE_ID_MASK,
+                                seq_id << DA7280_GPI0_SEQUENCE_ID_SHIFT);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "failed to update register : %d\n", ret);
+               return ret;
+       }
+
+       haptics->gpi_ctl[gpi_num].seq_id = seq_id;
+
+       return count;
+
+err:
+       dev_err(dev, "Invalid format or values!\n");
+       return count;
+}
+
+static ssize_t gpi_seq_id_show(struct device *dev,
+                              struct device_attribute *attr,
+                              char *buf)
+{
+       struct da7280_haptic *haptics = dev_get_drvdata(dev);
+       int ret;
+       unsigned int val, i;
+
+       for (i = 0; i < 3; i++) {
+               ret = regmap_read(haptics->regmap,
+                                 DA7280_GPI_0_CTL + i, &val);
+               if (ret) {
+                       dev_err(haptics->dev,
+                               "failed to read register : %d\n", ret);
+                       return ret;
+               }
+               haptics->gpi_ctl[i].seq_id =
+                       (val & DA7280_GPI0_SEQUENCE_ID_MASK)
+                               >> DA7280_GPI0_SEQUENCE_ID_SHIFT;
+               val = 0;
+       }
+
+       return sprintf(buf,
+               "Seq ID\nGPI0 : %d\nGPI1 : %d\nGPI2 : %d\n",
+               haptics->gpi_ctl[0].seq_id,
+               haptics->gpi_ctl[1].seq_id,
+               haptics->gpi_ctl[2].seq_id);
+}
+
+/* Valid format for GPIx_MODE
+ * echo X Y > gpi_mode
+ * ex) echo 2 1 > /sys/class/..../gpi_mode
+ * 0 <= X < 3, 0<= Y <= 1.
+ */
+static ssize_t gpi_mode_store(struct device *dev,
+                             struct device_attribute *attr,
+                             const char *buf, size_t count)
+{
+       struct da7280_haptic *haptics = dev_get_drvdata(dev);
+       u8 gpi_num = 0xff, gpi_mode = 0xff;
+       int ret;
+
+       if (count < 3)
+               goto err;
+
+       if (buf[0] >= '0')
+               gpi_num = buf[0] - '0';
+       if (buf[2] >= '0')
+               gpi_mode = buf[2] - '0';
+
+       if (gpi_num > 2 || gpi_mode > 1)
+               goto err;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_GPI_0_CTL + gpi_num,
+                                DA7280_GPI0_MODE_MASK,
+                                gpi_mode << DA7280_GPI0_MODE_SHIFT);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "failed to update register : %d\n", ret);
+               return ret;
+       }
+
+       haptics->gpi_ctl[gpi_num].mode = gpi_mode;
+
+       return count;
+
+err:
+       dev_err(dev, "Invalid format!\n");
+       return count;
+}
+
+static ssize_t gpi_mode_show(struct device *dev,
+                            struct device_attribute *attr,
+                            char *buf)
+{
+       struct da7280_haptic *haptics = dev_get_drvdata(dev);
+       int ret;
+       unsigned int val, i;
+
+       for (i = 0; i < 3; i++) {
+               ret = regmap_read(haptics->regmap,
+                                 DA7280_GPI_0_CTL + i, &val);
+               if (ret) {
+                       dev_err(haptics->dev,
+                               "failed to read register : %d\n", ret);
+                       return ret;
+               }
+               haptics->gpi_ctl[i].mode =
+                       (val & DA7280_GPI0_MODE_MASK)
+                               >> DA7280_GPI0_MODE_SHIFT;
+               val = 0;
+       }
+
+       return sprintf(buf, "Mode\nGPI0 : %d\nGPI1 : %d\nGPI2 : %d\n",
+               haptics->gpi_ctl[0].mode,
+               haptics->gpi_ctl[1].mode,
+               haptics->gpi_ctl[2].mode);
+}
+
+/* Valid format for GPIx_MODE
+ *  echo X Y > gpi_pol
+ *  ex) echo 2 1 > /sys/class/..../gpi_pol
+ *  0 <= X < 3, 0<= Y <= 2.
+ */
+static ssize_t gpi_pol_store(struct device *dev,
+                            struct device_attribute *attr,
+                            const char *buf,
+                            size_t count)
+{
+       struct da7280_haptic *haptics = dev_get_drvdata(dev);
+       u8 gpi_pol = 0xff, gpi_num = 0xff;
+       int ret;
+
+       if (count < 3)
+               goto err;
+
+       if (buf[0] >= '0')
+               gpi_num = buf[0] - '0';
+       if (buf[2] >= '0')
+               gpi_pol = buf[2] - '0';
+
+       if (gpi_num > 2 || gpi_pol > 2)
+               goto err;
+
+       ret = regmap_update_bits(haptics->regmap,
+                                DA7280_GPI_0_CTL + gpi_num,
+                                DA7280_GPI0_POLARITY_MASK,
+                                gpi_pol << DA7280_GPI0_POLARITY_SHIFT);
+       if (ret) {
+               dev_err(haptics->dev,
+                       "failed to update register : %d\n", ret);
+               return ret;
+       }
+
+       haptics->gpi_ctl[gpi_num].polarity = gpi_pol;
+
+       return count;
+
+err:
+       dev_err(dev, "Invalid format or input values!\n");
+       return count;
+}
+
+static ssize_t gpi_pol_show(struct device *dev,
+                           struct device_attribute *attr,
+                           char *buf)
+{
+       struct da7280_haptic *haptics = dev_get_drvdata(dev);
+       int ret = 0;
+       unsigned int val, i;
+
+       for (i = 0; i < 3; i++) {
+               ret = regmap_read(haptics->regmap,
+                                 DA7280_GPI_0_CTL + i, &val);
+               if (ret)
+                       return ret;
+               haptics->gpi_ctl[i].polarity =
+                       (val & DA7280_GPI0_POLARITY_MASK)
+                       >> DA7280_GPI0_POLARITY_SHIFT;
+               val = 0;
+       }
+
+       return sprintf(buf, "Polarity\nGPI0 : %d\nGPI1 : %d\nGPI2 : %d\n",
+               haptics->gpi_ctl[0].polarity,
+               haptics->gpi_ctl[1].polarity,
+               haptics->gpi_ctl[2].polarity);
+}
+
+#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 */
+       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 ret;
+
+       ret = regmap_read(haptics->regmap, DA7280_MEM_CTL1, &val);
+       if (ret)
+               return ret;
+
+       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;
+
+       memcpy(haptics->snp_mem, mem.val, mem.len);
+
+       ret = da7280_haptic_mem_update(haptics);
+       if (ret)
+               return ret;
+
+       return count;
+}
+
+static DEVICE_ATTR_RW(ps_seq_id);
+static DEVICE_ATTR_RW(ps_seq_loop);
+static DEVICE_ATTR_RW(gpi_seq_id);
+static DEVICE_ATTR_RW(gpi_mode);
+static DEVICE_ATTR_RW(gpi_pol);
+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_id.attr,
+       &dev_attr_gpi_mode.attr,
+       &dev_attr_gpi_pol.attr,
+       &dev_attr_patterns.attr,
+       NULL,
+};
+
+static const struct attribute_group da7280_attr_group = {
+       .attrs = da7280_sysfs_attr,
+};
+
+static const struct attribute_group *da7280_attr_groups[] = {
+       &da7280_attr_group,
+       NULL,
+};
+
+static int da7280_probe(struct i2c_client *client,
+                       const struct i2c_device_id *id)
+{
+       struct device *dev = &client->dev;
+       struct da7280_haptic *haptics;
+       unsigned int period2freq;
+       int ret;
+
+       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;
+       }
+
+       /* Handle DT data if provided */
+       if (client->dev.of_node)
+               da7280_of_to_pdata(&client->dev, haptics);
+
+       if (haptics->op_mode == DA7280_PWM_MODE) {
+               /* Get pwm and regulatot for haptics device */
+               haptics->pwm_dev = devm_pwm_get(&client->dev, NULL);
+               if (IS_ERR(haptics->pwm_dev)) {
+                       dev_err(dev, "failed to get PWM device\n");
+                       return PTR_ERR(haptics->pwm_dev);
+               }
+
+               /*
+                * FIXME: pwm_apply_args() should be removed when switching to
+                * the atomic PWM API.
+                */
+               pwm_apply_args(haptics->pwm_dev);
+
+               /* Check PWM Period, it must be in 10k ~ 250kHz */
+               period2freq = 1000000 / pwm_get_period(haptics->pwm_dev);
+               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_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);
+       if (IS_ERR(haptics->regmap)) {
+               ret = PTR_ERR(haptics->regmap);
+               dev_err(dev, "Failed to allocate register map : %d\n",
+                       ret);
+               return ret;
+       }
+
+       ret = devm_request_threaded_irq(dev, client->irq, NULL,
+                                       da7280_irq_handler,
+                                       IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+                                       "da7280-haptics", haptics);
+       if (ret != 0) {
+               dev_err(dev,
+                       "Failed to request IRQ : %d\n", client->irq);
+               return ret;
+       }
+
+       ret = da7280_init(haptics);
+       if (ret) {
+               dev_err(dev, "failed to initialize device\n");
+               return ret;
+       }
+
+       /* Initialize input device for haptic device */
+       haptics->input_dev = devm_input_allocate_device(dev);
+       if (!haptics->input_dev) {
+               dev_err(dev, "failed to allocate input device\n");
+               return -ENOMEM;
+       }
+
+       haptics->input_dev->name = "da7280-haptic";
+       haptics->input_dev->dev.parent = client->dev.parent;
+       haptics->input_dev->open = da7280_haptic_open;
+       haptics->input_dev->close = da7280_haptic_close;
+       input_set_drvdata(haptics->input_dev, haptics);
+       input_set_capability(haptics->input_dev, EV_FF, FF_RUMBLE);
+
+       ret = input_ff_create_memless(haptics->input_dev, NULL,
+                                     da7280_haptic_play);
+       if (ret) {
+               dev_err(dev, "failed to create force-feedback\n");
+               return ret;
+       }
+
+#ifdef CONFIG_SYSFS
+       haptics->input_dev->dev.groups = da7280_attr_groups;
+#endif
+
+       ret = input_register_device(haptics->input_dev);
+       if (ret)
+               dev_err(dev, "failed to register input device\n");
+
+       return ret;
+}
+
+static int __maybe_unused da7280_suspend(struct device *dev)
+{
+       struct da7280_haptic *haptics = dev_get_drvdata(dev);
+       int ret = 0;
+
+       mutex_lock(&haptics->input_dev->mutex);
+       if (haptics->suspend_state == 0) {
+               ret = regmap_update_bits(haptics->regmap,
+                                        DA7280_TOP_CTL1,
+                                        DA7280_STANDBY_EN_MASK, 0);
+               if (ret)
+                       dev_err(haptics->dev,
+                               "I2C error : %d\n", ret);
+               else
+                       haptics->suspend_state = 1;
+       }
+       mutex_unlock(&haptics->input_dev->mutex);
+       return ret;
+}
+
+static int __maybe_unused da7280_resume(struct device *dev)
+{
+       struct da7280_haptic *haptics = dev_get_drvdata(dev);
+       int ret = 0;
+
+       mutex_lock(&haptics->input_dev->mutex);
+       if (haptics->suspend_state) {
+               ret = regmap_update_bits(haptics->regmap,
+                                        DA7280_TOP_CTL1,
+                                        DA7280_STANDBY_EN_MASK,
+                                        DA7280_STANDBY_EN_MASK);
+               if (ret)
+                       dev_err(haptics->dev,
+                               "i2c error : %d\n", ret);
+               else
+                       haptics->suspend_state = 0;
+       }
+       mutex_unlock(&haptics->input_dev->mutex);
+       return ret;
+}
+
+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 <roy.im.opensou...@diasemi.com>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/input/misc/da7280.h b/drivers/input/misc/da7280.h
new file mode 100644
index 0000000..d9310b6
--- /dev/null
+++ b/drivers/input/misc/da7280.h
@@ -0,0 +1,412 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * DA7280 Haptic device driver registers
+ *
+ * Copyright (c) 2017 Dialog Semiconductor.
+ * Author: Roy Im <roy.im.opensou...@diasemi.com>
+ */
+
+#ifndef _DA7280_REG_DEFS_H
+#define _DA7280_REG_DEFS_H
+
+#include <linux/bitops.h>
+
+/* Registers */
+
+#define DA7280_CHIP_REV                       0x00
+#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_CIF_I2C1                       0x08
+#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_CALIB_IMP_H                    0x11
+#define DA7280_CALIB_IMP_L                    0x12
+#define DA7280_TOP_CFG1                       0x13
+#define DA7280_TOP_CFG2                       0x14
+#define DA7280_TOP_CFG3                       0x15
+#define DA7280_TOP_CFG4                       0x16
+#define DA7280_TOP_INT_CFG1                   0x17
+#define DA7280_TOP_INT_CFG6_H                 0x1C
+#define DA7280_TOP_INT_CFG6_L                 0x1D
+#define DA7280_TOP_INT_CFG7_H                 0x1E
+#define DA7280_TOP_INT_CFG7_L                 0x1F
+#define DA7280_TOP_INT_CFG8                   0x20
+#define DA7280_TOP_CTL1                       0x22
+#define DA7280_TOP_CTL2                       0x23
+#define DA7280_SEQ_CTL1                       0x24
+#define DA7280_SWG_C1                         0x25
+#define DA7280_SWG_C2                         0x26
+#define DA7280_SWG_C3                         0x27
+#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_ADC_DATA_H1                    0x2E
+#define DA7280_ADC_DATA_L1                    0x2F
+#define DA7280_POLARITY                       0x43
+#define DA7280_LRA_AVR_H                      0x44
+#define DA7280_LRA_AVR_L                      0x45
+#define DA7280_FRQ_LRA_PER_ACT_H              0x46
+#define DA7280_FRQ_LRA_PER_ACT_L              0x47
+#define DA7280_FRQ_PHASE_H                    0x48
+#define DA7280_FRQ_PHASE_L                    0x49
+#define DA7280_FRQ_CTL                        0x4C
+#define DA7280_TRIM3                          0x5F
+#define DA7280_TRIM4                          0x60
+#define DA7280_TRIM6                          0x62
+#define DA7280_TOP_CFG5                       0x6E
+#define DA7280_IRQ_EVENT_ACTUATOR_FAULT       0x81
+#define DA7280_IRQ_STATUS2                    0x82
+#define DA7280_IRQ_MASK2                      0x83
+#define DA7280_SNP_MEM_0                      0x84
+#define DA7280_SNP_MEM_99                     0xE7
+
+/* DA7280_CHIP_REV (Address 0x00) */
+#define DA7280_CHIP_REV_MAJOR_SHIFT            0
+#define DA7280_CHIP_REV_MAJOR_MASK             (15 << 0)
+#define DA7280_CHIP_REV_MINOR_SHIFT            4
+#define DA7280_CHIP_REV_MINOR_MASK             (15 << 4)
+
+/* 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_CIF_I2C1 (Address 0x08) */
+#define DA7280_I2C_TO_ENABLE_SHIFT             6
+#define DA7280_I2C_TO_ENABLE_MASK              BIT(6)
+#define DA7280_I2C_WR_MODE_SHIFT               7
+#define DA7280_I2C_WR_MODE_MASK                        BIT(7)
+
+/* DA7280_FRQ_LRA_PER_H (Address 0x0a) */
+#define DA7280_LRA_PER_H_SHIFT                 0
+#define DA7280_LRA_PER_H_MASK                  (255 << 0)
+
+/* DA7280_FRQ_LRA_PER_L (Address 0x0b) */
+#define DA7280_LRA_PER_L_SHIFT                 0
+#define DA7280_LRA_PER_L_MASK                  (127 << 0)
+
+/* DA7280_ACTUATOR1 (Address 0x0c) */
+#define DA7280_ACTUATOR_NOMMAX_SHIFT           0
+#define DA7280_ACTUATOR_NOMMAX_MASK            (255 << 0)
+
+/* DA7280_ACTUATOR2 (Address 0x0d) */
+#define DA7280_ACTUATOR_ABSMAX_SHIFT           0
+#define DA7280_ACTUATOR_ABSMAX_MASK            (255 << 0)
+
+/* DA7280_ACTUATOR3 (Address 0x0e) */
+#define DA7280_IMAX_SHIFT                      0
+#define DA7280_IMAX_MASK                       (31 << 0)
+
+/* DA7280_CALIB_V2I_H (Address 0x0f) */
+#define DA7280_V2I_FACTOR_H_SHIFT              0
+#define DA7280_V2I_FACTOR_H_MASK               (255 << 0)
+
+/* DA7280_CALIB_V2I_L (Address 0x10) */
+#define DA7280_V2I_FACTOR_L_SHIFT              0
+#define DA7280_V2I_FACTOR_L_MASK               (255 << 0)
+
+/* DA7280_CALIB_IMP_H (Address 0x11) */
+#define DA7280_IMPEDANCE_H_SHIFT               0
+#define DA7280_IMPEDANCE_H_MASK                        (255 << 0)
+
+/* DA7280_CALIB_IMP_L (Address 0x12) */
+#define DA7280_IMPEDANCE_L_SHIFT               0
+#define DA7280_IMPEDANCE_L_MASK                        (3 << 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)
+#define DA7280_EMBEDDED_MODE_SHIFT             7
+#define DA7280_EMBEDDED_MODE_MASK              BIT(7)
+
+/* 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_CFG3 (Address 0x15) */
+#define DA7280_VDD_MARGIN_SHIFT                        0
+#define DA7280_VDD_MARGIN_MASK                 (15 << 0)
+
+/* 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)
+#define DA7280_FRQ_LOCKED_LIM_SHIFT            2
+#define DA7280_FRQ_LOCKED_LIM_MASK             (63 << 2)
+
+/* DA7280_TOP_INT_CFG6_H (Address 0x1c) */
+#define DA7280_FRQ_PID_KP_H_SHIFT              0
+#define DA7280_FRQ_PID_KP_H_MASK               (255 << 0)
+
+/* DA7280_TOP_INT_CFG6_L (Address 0x1d) */
+#define DA7280_FRQ_PID_KP_L_SHIFT              0
+#define DA7280_FRQ_PID_KP_L_MASK               (255 << 0)
+
+/* DA7280_TOP_INT_CFG7_H (Address 0x1e) */
+#define DA7280_FRQ_PID_KI_H_SHIFT              0
+#define DA7280_FRQ_PID_KI_H_MASK               (255 << 0)
+
+/* DA7280_TOP_INT_CFG7_L (Address 0x1f) */
+#define DA7280_FRQ_PID_KI_L_SHIFT              0
+#define DA7280_FRQ_PID_KI_L_MASK               (255 << 0)
+
+/* DA7280_TOP_INT_CFG8 (Address 0x20) */
+#define DA7280_TST_FRQ_TRACK_BEMF_LIM_SHIFT     0
+#define DA7280_TST_FRQ_TRACK_BEMF_LIM_MASK      (15 << 0)
+#define DA7280_TST_AMP_RAPID_STOP_LIM_SHIFT     4
+#define DA7280_TST_AMP_RAPID_STOP_LIM_MASK      (7 << 4)
+
+/* 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_TOP_CTL2 (Address 0x23) */
+#define DA7280_OVERRIDE_VAL_SHIFT              0
+#define DA7280_OVERRIDE_VAL_MASK               (255 << 0)
+
+/* DA7280_SEQ_CTL1 (Address 0x24) */
+#define DA7280_SEQ_CONTINUE_SHIFT              0
+#define DA7280_SEQ_CONTINUE_MASK               BIT(0)
+#define DA7280_WAVEGEN_MODE_SHIFT              1
+#define DA7280_WAVEGEN_MODE_MASK               BIT(1)
+#define DA7280_FREQ_WAVEFORM_TIMEBASE_SHIFT    2
+#define DA7280_FREQ_WAVEFORM_TIMEBASE_MASK     BIT(2)
+
+/* DA7280_SWG_C1 (Address 0x25) */
+#define DA7280_CUSTOM_WAVE_GEN_COEFF1_SHIFT    0
+#define DA7280_CUSTOM_WAVE_GEN_COEFF1_MASK     (255 << 0)
+
+/* DA7280_SWG_C2 (Address 0x26) */
+#define DA7280_CUSTOM_WAVE_GEN_COEFF2_SHIFT    0
+#define DA7280_CUSTOM_WAVE_GEN_COEFF2_MASK     (255 << 0)
+
+/* DA7280_SWG_C3 (Address 0x27) */
+#define DA7280_CUSTOM_WAVE_GEN_COEFF3_SHIFT    0
+#define DA7280_CUSTOM_WAVE_GEN_COEFF3_MASK     (255 << 0)
+
+/* 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_POLARITY_MASK              (3 << 0)
+#define DA7280_GPI0_MODE_SHIFT                 2
+#define DA7280_GPI0_MODE_MASK                  BIT(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_POLARITY_SHIFT             0
+#define DA7280_GPI1_POLARITY_MASK              (3 << 0)
+#define DA7280_GPI1_MODE_SHIFT                 2
+#define DA7280_GPI1_MODE_MASK                  BIT(2)
+#define DA7280_GPI1_SEQUENCE_ID_SHIFT          3
+#define DA7280_GPI1_SEQUENCE_ID_MASK           (15 << 3)
+
+/* DA7280_GPIO_2_CTL (Address 0x2b) */
+#define DA7280_GPI2_POLARITY_SHIFT             0
+#define DA7280_GPI2_POLARITY_MASK              (3 << 0)
+#define DA7280_GPI2_MODE_SHIFT                 2
+#define DA7280_GPI2_MODE_MASK                  BIT(2)
+#define DA7280_GPI2_SEQUENCE_ID_SHIFT          3
+#define DA7280_GPI2_SEQUENCE_ID_MASK           (15 << 3)
+
+/* DA7280_MEM_CTL1 (Address 0x2c) */
+#define DA7280_WAV_MEM_BASE_ADDR_SHIFT         0
+#define DA7280_WAV_MEM_BASE_ADDR_MASK          (255 << 0)
+
+/* DA7280_MEM_CTL2 (Address 0x2d) */
+#define DA7280_WAV_MEM_LOCK_SHIFT              7
+#define DA7280_WAV_MEM_LOCK_MASK               BIT(7)
+
+/* DA7280_ADC_DATA_H1 (Address 0x2e) */
+#define DA7280_ADC_VDD_H_SHIFT                 0
+#define DA7280_ADC_VDD_H_MASK                  (255 << 0)
+
+/* DA7280_ADC_DATA_L1 (Address 0x2f) */
+#define DA7280_ADC_VDD_L_SHIFT                 0
+#define DA7280_ADC_VDD_L_MASK                  (127 << 0)
+
+/* DA7280_POLARITY (Address 0x43) */
+#define DA7280_POLARITY_SHIFT                  0
+#define DA7280_POLARITY_MASK                   BIT(0)
+
+/* DA7280_LRA_AVR_H (Address 0x44) */
+#define DA7280_LRA_PER_AVERAGE_H_SHIFT         0
+#define DA7280_LRA_PER_AVERAGE_H_MASK          (255 << 0)
+
+/* DA7280_LRA_AVR_L (Address 0x45) */
+#define DA7280_LRA_PER_AVERAGE_L_SHIFT         0
+#define DA7280_LRA_PER_AVERAGE_L_MASK          (127 << 0)
+
+/* DA7280_FRQ_LRA_PER_ACT_H (Address 0x46) */
+#define DA7280_LRA_PER_ACTUAL_H_SHIFT          0
+#define DA7280_LRA_PER_ACTUAL_H_MASK           (255 << 0)
+
+/* DA7280_FRQ_LRA_PER_ACT_L (Address 0x47) */
+#define DA7280_LRA_PER_ACTUAL_L_SHIFT          0
+#define DA7280_LRA_PER_ACTUAL_L_MASK           (127 << 0)
+
+/* DA7280_FRQ_PHASE_H (Address 0x48) */
+#define DA7280_PHASE_DELAY_H_SHIFT             0
+#define DA7280_PHASE_DELAY_H_MASK              (255 << 0)
+
+/* DA7280_FRQ_PHASE_L (Address 0x49) */
+#define DA7280_DELAY_SHIFT_L_SHIFT             0
+#define DA7280_DELAY_SHIFT_L_MASK              (7 << 0)
+#define DA7280_DELAY_SHIFT_FREEZE_SHIFT                7
+#define DA7280_DELAY_SHIFT_FREEZE_MASK         BIT(7)
+
+/* DA7280_FRQ_CTL (Address 0x4c) */
+#define DA7280_FREQ_TRACKING_FORCE_ON_SHIFT    0
+#define DA7280_FREQ_TRACKING_FORCE_ON_MASK     BIT(0)
+#define DA7280_FREQ_TRACKING_AUTO_ADJ_SHIFT    1
+#define DA7280_FREQ_TRACKING_AUTO_ADJ_MASK     BIT(1)
+
+/* DA7280_TRIM3 (Address 0x5f) */
+#define DA7280_REF_UVLO_THRES_SHIFT            3
+#define DA7280_REF_UVLO_THRES_MASK             (3 << 3)
+#define DA7280_LOOP_FILT_LOW_BW_SHIFT          5
+#define DA7280_LOOP_FILT_LOW_BW_MASK           BIT(5)
+#define DA7280_LOOP_IDAC_DOUBLE_RANGE_SHIFT    6
+#define DA7280_LOOP_IDAC_DOUBLE_RANGE_MASK     BIT(6)
+
+/* DA7280_TRIM4 (Address 0x60) */
+#define DA7280_LOOP_FILT_RES_TRIM_SHIFT                0
+#define DA7280_LOOP_FILT_RES_TRIM_MASK         (3 << 0)
+#define DA7280_LOOP_FILT_CAP_TRIM_SHIFT                2
+#define DA7280_LOOP_FILT_CAP_TRIM_MASK         (3 << 2)
+
+/* DA7280_TRIM6 (Address 0x62) */
+#define DA7280_HBRIDGE_ERC_HS_TRIM_SHIFT       0
+#define DA7280_HBRIDGE_ERC_HS_TRIM_MASK                (3 << 0)
+#define DA7280_HBRIDGE_ERC_LS_TRIM_SHIFT       2
+#define DA7280_HBRIDGE_ERC_LS_TRIM_MASK                (3 << 2)
+
+/* DA7280_TOP_CFG5 (Address 0x6e) */
+#define DA7280_V2I_FACTOR_OFFSET_EN_SHIFT              0
+#define DA7280_V2I_FACTOR_OFFSET_EN_MASK               BIT(0)
+#define DA7280_FRQ_PAUSE_ON_POLARITY_CHANGE_SHIFT      1
+#define DA7280_FRQ_PAUSE_ON_POLARITY_CHANGE_MASK       BIT(1)
+#define DA7280_DELAY_BYPASS_SHIFT                      2
+#define DA7280_DELAY_BYPASS_MASK                       BIT(2)
+
+/* DA7280_IRQ_EVENT_ACTUATOR_FAULT (Address 0x81) */
+#define DA7280_ADC_SAT_FAULT_SHIFT             2
+#define DA7280_ADC_SAT_FAULT_MASK              BIT(2)
+
+/* DA7280_IRQ_STATUS2 (Address 0x82) */
+#define DA7280_STA_ADC_SAT_SHIFT               7
+#define DA7280_STA_ADC_SAT_MASK                        BIT(7)
+
+/* DA7280_IRQ_MASK2 (Address 0x83) */
+#define DA7280_ADC_SAT_M_SHIFT                 7
+#define DA7280_ADC_SAT_M_MASK                  BIT(7)
+
+/* DA7280_SNP_MEM_XX (Address 0x84 ~ 0xe7) */
+#define DA7280_SNP_MEM_SHIFT                   0
+#define DA7280_SNP_MEM_MASK                    (255 << 0)
+
+#endif
-- 
end-of-patch for PATCH V4

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