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Subject[RESEND PATCH v20 3/3] Input: new da7280 haptic driver
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.

Reviewed-by: Jes Sorensen <Jes.Sorensen@gmail.com>.

Signed-off-by: Roy Im <roy.im.opensource@diasemi.com>

---
v20:
- Simplified the code with dev_err_probe().
- Removed some work queues.
v19:
- Corrected some errors and replaced some code to proper one.
- Improved work queues and removed sysfs attributes
- Added changes for gpix id in upload effect.
v18:
- Corrected comments in Kconfig
- Updated to preferred style for multi line comments in c file.
v17:
- fixed an issue.
v16:
- Corrected some code and updated description in Kconfig.
v15:
- Removed some defines and updated some comments.
v14:
- Updated pwm related code, alignments and comments.
v13:
- Updated some conditions in pwm function and alignments.
v12: No changes.
v11:
- Updated the pwm related code, comments and typo.
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.
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 | 12 +
drivers/input/misc/Makefile | 1 +
drivers/input/misc/da7280.c | 1375 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 1388 insertions(+)
create mode 100644 drivers/input/misc/da7280.c

diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 362e8a0..d38b466 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -869,4 +869,16 @@ 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 REGMAP_I2C
+ help
+ Say Y to enable support for the Dialog DA7280 haptics driver.
+ The haptics can be controlled by PWM or GPIO
+ with I2C communication.
+
+ 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 a48e5f2..9cfd6ab 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..21d4d37
--- /dev/null
+++ b/drivers/input/misc/da7280.c
@@ -0,0 +1,1375 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DA7280 Haptic device driver
+ *
+ * Copyright (c) 2020 Dialog Semiconductor.
+ * Author: Roy Im <Roy.Im.Opensource@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 <linux/uaccess.h>
+#include <linux/bitops.h>
+#include <linux/bitfield.h>
+
+/* 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_MASK BIT(0)
+#define DA7280_E_UVLO_MASK BIT(1)
+#define DA7280_E_SEQ_DONE_MASK BIT(2)
+#define DA7280_E_OVERTEMP_CRIT_MASK BIT(3)
+#define DA7280_E_SEQ_FAULT_MASK BIT(4)
+#define DA7280_E_WARNING_MASK BIT(5)
+#define DA7280_E_ACTUATOR_FAULT_MASK BIT(6)
+#define DA7280_E_OC_FAULT_MASK BIT(7)
+
+/* DA7280_IRQ_EVENT_WARNING_DIAG (Address 0x04) */
+#define DA7280_E_OVERTEMP_WARN_MASK BIT(3)
+#define DA7280_E_MEM_TYPE_MASK BIT(4)
+#define DA7280_E_LIM_DRIVE_ACC_MASK BIT(6)
+#define DA7280_E_LIM_DRIVE_MASK BIT(7)
+
+/* DA7280_IRQ_EVENT_PAT_DIAG (Address 0x05) */
+#define DA7280_E_PWM_FAULT_MASK BIT(5)
+#define DA7280_E_MEM_FAULT_MASK BIT(6)
+#define DA7280_E_SEQ_ID_FAULT_MASK BIT(7)
+
+/* DA7280_IRQ_STATUS1 (Address 0x06) */
+#define DA7280_STA_SEQ_CONTINUE_MASK BIT(0)
+#define DA7280_STA_UVLO_VBAT_OK_MASK BIT(1)
+#define DA7280_STA_SEQ_DONE_MASK BIT(2)
+#define DA7280_STA_OVERTEMP_CRIT_MASK BIT(3)
+#define DA7280_STA_SEQ_FAULT_MASK BIT(4)
+#define DA7280_STA_WARNING_MASK BIT(5)
+#define DA7280_STA_ACTUATOR_MASK BIT(6)
+#define DA7280_STA_OC_MASK BIT(7)
+
+/* DA7280_IRQ_MASK1 (Address 0x07) */
+#define DA7280_SEQ_CONTINUE_M_MASK BIT(0)
+#define DA7280_E_UVLO_M_MASK BIT(1)
+#define DA7280_SEQ_DONE_M_MASK BIT(2)
+#define DA7280_OVERTEMP_CRIT_M_MASK BIT(3)
+#define DA7280_SEQ_FAULT_M_MASK BIT(4)
+#define DA7280_WARNING_M_MASK BIT(5)
+#define DA7280_ACTUATOR_M_MASK BIT(6)
+#define DA7280_OC_M_MASK BIT(7)
+
+/* DA7280_ACTUATOR3 (Address 0x0e) */
+#define DA7280_IMAX_MASK GENMASK(4, 0)
+
+/* DA7280_TOP_CFG1 (Address 0x13) */
+#define DA7280_AMP_PID_EN_MASK BIT(0)
+#define DA7280_RAPID_STOP_EN_MASK BIT(1)
+#define DA7280_ACCELERATION_EN_MASK BIT(2)
+#define DA7280_FREQ_TRACK_EN_MASK BIT(3)
+#define DA7280_BEMF_SENSE_EN_MASK BIT(4)
+#define DA7280_ACTUATOR_TYPE_MASK BIT(5)
+
+/* DA7280_TOP_CFG2 (Address 0x14) */
+#define DA7280_FULL_BRAKE_THR_MASK GENMASK(3, 0)
+#define DA7280_MEM_DATA_SIGNED_MASK BIT(4)
+
+/* DA7280_TOP_CFG4 (Address 0x16) */
+#define DA7280_TST_CALIB_IMPEDANCE_DIS_MASK BIT(6)
+#define DA7280_V2I_FACTOR_FREEZE_MASK BIT(7)
+
+/* DA7280_TOP_INT_CFG1 (Address 0x17) */
+#define DA7280_BEMF_FAULT_LIM_MASK GENMASK(1, 0)
+
+/* DA7280_TOP_CTL1 (Address 0x22) */
+#define DA7280_OPERATION_MODE_MASK GENMASK(2, 0)
+#define DA7280_STANDBY_EN_MASK BIT(3)
+#define DA7280_SEQ_START_MASK BIT(4)
+
+/* DA7280_SEQ_CTL2 (Address 0x28) */
+#define DA7280_PS_SEQ_ID_MASK GENMASK(3, 0)
+#define DA7280_PS_SEQ_LOOP_MASK GENMASK(7, 4)
+
+/* DA7280_GPIO_0_CTL (Address 0x29) */
+#define DA7280_GPI0_POLARITY_MASK GENMASK(1, 0)
+#define DA7280_GPI0_MODE_MASK BIT(2)
+#define DA7280_GPI0_SEQUENCE_ID_MASK GENMASK(6, 3)
+
+/* DA7280_GPIO_1_CTL (Address 0x2a) */
+#define DA7280_GPI1_POLARITY_MASK GENMASK(1, 0)
+#define DA7280_GPI1_MODE_MASK BIT(2)
+#define DA7280_GPI1_SEQUENCE_ID_MASK GENMASK(6, 3)
+
+/* DA7280_GPIO_2_CTL (Address 0x2b) */
+#define DA7280_GPI2_POLARITY_MASK GENMASK(1, 0)
+#define DA7280_GPI2_MODE_MASK BIT(2)
+#define DA7280_GPI2_SEQUENCE_ID_MASK GENMASK(6, 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_SEQ_ID_MAX 15
+#define DA7280_SEQ_LOOP_MAX 15
+#define DA7280_GPI_SEQ_ID_DFT 0
+#define DA7280_GPI_SEQ_ID_MAX 2
+
+#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_SEQ_ID_IDX = 0,
+ DA7280_CUSTOM_SEQ_LOOP_IDX = 1,
+ DA7280_CUSTOM_DATA_LEN = 2,
+};
+
+enum da7280_custom_gpi_effect_param {
+ DA7280_CUSTOM_GPI_SEQ_ID_IDX = 0,
+ DA7280_CUSTOM_GPI_NUM_IDX = 2,
+ DA7280_CUSTOM_GP_DATA_LEN = 3,
+};
+
+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 work_struct work;
+ int val;
+ u16 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;
+};
+
+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)
+{
+ unsigned int val;
+ int error;
+
+ /* The patterns should be updated when haptic is not working */
+ 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 && enabled) {
+ dev_err(haptics->dev,
+ "Please set the proper gain first\n");
+ return -EINVAL;
+ }
+
+ pwm_get_state(haptics->pwm_dev, &state);
+ state.enabled = enabled;
+ if (enabled) {
+ period_mag_multi = (u64)state.period * haptics->gain;
+ period_mag_multi >>= MAX_MAGNITUDE_SHIFT;
+
+ /*
+ * The interpretation of duty cycle depends on the acc_en,
+ * it should be between 50% and 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 = 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 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 (%d) for driving level (%d)\n",
+ 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,
+ "op_mode i2c err: %d\n", 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: %d\n",
+ error);
+ return;
+ }
+ }
+
+ haptics->enabled = true;
+}
+
+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: %d\n", 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: %d\n",
+ 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: %d\n",
+ error);
+ return;
+ }
+ break;
+ default:
+ dev_err(haptics->dev,
+ "Invalid op mode(%d)\n", haptics->op_mode);
+ return;
+ }
+
+ haptics->enabled = false;
+}
+
+static void da7280_haptic_work(struct work_struct *work)
+{
+ struct da7280_haptic *haptics =
+ container_of(work, struct da7280_haptic, work);
+ int val = haptics->val;
+
+ if (!!val)
+ da7280_haptic_enable(haptics);
+ else
+ da7280_haptic_disable(haptics);
+}
+
+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);
+ s16 data[DA7280_SNP_MEM_SIZE] = {0,};
+ unsigned int val;
+ int tmp, i, num;
+ int error;
+
+ /* The effect should be uploaded when haptic is not working */
+ if (haptics->enabled)
+ return -EBUSY;
+
+ switch (effect->type) {
+ /* DRO/PWM modes support this type */
+ case FF_CONSTANT:
+ haptics->op_mode = haptics->const_op_mode;
+ 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: 4 < X <= 100,
+ * and will be saved into the waveform memory inside DA728x.
+ * If X = 2, the data will be PS_SEQ_ID and PS_SEQ_LOOP.
+ * If X = 3, the 1st data will be GPIX_SEQUENCE_ID .
+ */
+ if (effect->u.periodic.custom_len == DA7280_CUSTOM_DATA_LEN)
+ goto set_seq_id_loop;
+
+ if (effect->u.periodic.custom_len == DA7280_CUSTOM_GP_DATA_LEN)
+ goto set_gpix_seq_id;
+
+ if (effect->u.periodic.custom_len < DA7280_CUSTOM_DATA_LEN ||
+ effect->u.periodic.custom_len > DA7280_SNP_MEM_SIZE) {
+ dev_err(haptics->dev, "Invalid 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 && data[i] >= 0) {
+ 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,
+ "Custom date update error: %d\n", error);
+ return error;
+ }
+ break;
+
+set_seq_id_loop:
+ if (copy_from_user(data, effect->u.periodic.custom_data,
+ sizeof(s16) * DA7280_CUSTOM_DATA_LEN)) {
+ dev_err(haptics->dev,
+ "Custom id/loop load error\n");
+ return -EFAULT;
+ }
+
+ if (data[DA7280_CUSTOM_SEQ_ID_IDX] < 0 ||
+ data[DA7280_CUSTOM_SEQ_ID_IDX] > DA7280_SEQ_ID_MAX ||
+ data[DA7280_CUSTOM_SEQ_LOOP_IDX] < 0 ||
+ data[DA7280_CUSTOM_SEQ_LOOP_IDX] > DA7280_SEQ_LOOP_MAX) {
+ dev_err(haptics->dev, "Invalid custom id or loop\n");
+ return -EINVAL;
+ }
+ haptics->ps_seq_id =
+ data[DA7280_CUSTOM_SEQ_ID_IDX] & 0x0f;
+ haptics->ps_seq_loop =
+ data[DA7280_CUSTOM_SEQ_LOOP_IDX] & 0x0f;
+ haptics->op_mode = haptics->periodic_op_mode;
+
+ val = FIELD_PREP(DA7280_PS_SEQ_ID_MASK, haptics->ps_seq_id) |
+ FIELD_PREP(DA7280_PS_SEQ_LOOP_MASK,
+ haptics->ps_seq_loop);
+ error = regmap_write(haptics->regmap,
+ DA7280_SEQ_CTL2, val);
+ if (error) {
+ dev_err(haptics->dev,
+ "Upload effect, custom i2c err: %d\n",
+ error);
+ return error;
+ }
+ break;
+
+set_gpix_seq_id:
+ if (copy_from_user(data, effect->u.periodic.custom_data,
+ sizeof(s16) * DA7280_CUSTOM_GP_DATA_LEN)) {
+ dev_err(haptics->dev,
+ "Custom GPI id load error\n");
+ return -EFAULT;
+ }
+
+ if (data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] < 0 ||
+ data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] > DA7280_SEQ_ID_MAX ||
+ data[DA7280_CUSTOM_GPI_NUM_IDX] < 0 ||
+ data[DA7280_CUSTOM_GPI_NUM_IDX] > DA7280_GPI_SEQ_ID_MAX) {
+ dev_err(haptics->dev,
+ "Invalid custom GPI id/loop\n");
+ return -EINVAL;
+ }
+
+ num = data[DA7280_CUSTOM_GPI_NUM_IDX] & 0x0f;
+ haptics->gpi_ctl[num].seq_id =
+ data[DA7280_CUSTOM_GPI_SEQ_ID_IDX] & 0x0f;
+
+ haptics->op_mode = haptics->periodic_op_mode;
+
+ val = FIELD_PREP(DA7280_GPI0_SEQUENCE_ID_MASK,
+ haptics->gpi_ctl[num].seq_id);
+ error = regmap_update_bits(haptics->regmap,
+ DA7280_GPI_0_CTL + num,
+ DA7280_GPI0_SEQUENCE_ID_MASK,
+ val);
+ if (error) {
+ dev_err(haptics->dev,
+ "Upload effect, custom GPI i2c err: %d\n",
+ error);
+ return error;
+ }
+ break;
+
+ default:
+ dev_err(haptics->dev, "Unsupported effect type: %d\n",
+ effect->type);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int da7280_haptics_playback(struct input_dev *dev,
+ int effect_id, int val)
+{
+ struct da7280_haptic *haptics = input_get_drvdata(dev);
+
+ if (!haptics->op_mode) {
+ dev_warn(haptics->dev,
+ "No effects have been uploaded\n");
+ return -EINVAL;
+ }
+
+ haptics->val = val;
+ schedule_work(&haptics->work);
+
+ return 0;
+}
+
+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 da7280, i2c err: %d\n",
+ error);
+
+ return error;
+}
+
+static void da7280_haptic_close(struct input_dev *dev)
+{
+ struct da7280_haptic *haptics = input_get_drvdata(dev);
+ int error;
+
+ cancel_work_sync(&haptics->work);
+
+ 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,
+ "Failed to close da7280, i2c err: %d\n", 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 LRA\n");
+ return DA7280_LRA;
+}
+
+static u8 da7280_haptic_of_gpi_mode_str(struct device *dev,
+ const char *str)
+{
+ if (!strcmp(str, "Single-pattern"))
+ return 0;
+ else if (!strcmp(str, "Multi-pattern"))
+ return 1;
+
+ dev_warn(dev, "Invalid string - set to Single-pattern\n");
+ return 0;
+}
+
+static u8 da7280_haptic_of_gpi_pol_str(struct device *dev,
+ const char *str)
+{
+ if (!strcmp(str, "Rising-edge"))
+ return 0;
+ else if (!strcmp(str, "Falling-edge"))
+ return 1;
+ else if (!strcmp(str, "Both-edge"))
+ return 2;
+
+ dev_warn(dev, "Invalid string - set to Rising-edge\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)
+{
+ unsigned int i, mem[DA7280_SNP_MEM_SIZE];
+ char gpi_str1[] = "dlg,gpi0-seq-id";
+ char gpi_str2[] = "dlg,gpi0-mode";
+ char gpi_str3[] = "dlg,gpi0-polarity";
+ const char *str;
+ u32 val;
+
+ 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 <= DA7280_GPI_SEQ_ID_MAX; 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_MEM_TYPE_MASK)
+ dev_warn(dev, "Please check the mem data format\n");
+ if (events[1] & DA7280_E_OVERTEMP_WARN_MASK)
+ dev_warn(dev, "Over-temperature warning\n");
+ }
+
+ if (events[0] & DA7280_E_SEQ_FAULT_MASK) {
+ if (events[2] & DA7280_E_SEQ_ID_FAULT_MASK)
+ dev_info(dev, "Please reload PS_SEQ_ID & mem data\n");
+ if (events[2] & DA7280_E_MEM_FAULT_MASK)
+ dev_info(dev, "Please reload the mem data\n");
+ if (events[2] & DA7280_E_PWM_FAULT_MASK)
+ dev_info(dev, "Please restart PWM interface\n");
+ }
+
+ return IRQ_HANDLED;
+
+error_i2c:
+ dev_err(dev, "da7280 irq, i2c err: %d\n", error);
+ return IRQ_NONE;
+}
+
+static int da7280_init(struct da7280_haptic *haptics)
+{
+ unsigned int val = 0;
+ u32 v2i_factor;
+ int error, i;
+ u8 mask = 0;
+
+ /*
+ * If device type is DA7280_DEV_MAX,
+ * then 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 = FIELD_PREP(DA7280_ACTUATOR_TYPE_MASK,
+ (haptics->dev_type ? 1 : 0)) |
+ FIELD_PREP(DA7280_BEMF_SENSE_EN_MASK,
+ (haptics->bemf_sense_en ? 1 : 0)) |
+ FIELD_PREP(DA7280_FREQ_TRACK_EN_MASK,
+ (haptics->freq_track_en ? 1 : 0)) |
+ FIELD_PREP(DA7280_ACCELERATION_EN_MASK,
+ (haptics->acc_en ? 1 : 0)) |
+ FIELD_PREP(DA7280_RAPID_STOP_EN_MASK,
+ (haptics->rapid_stop_en ? 1 : 0)) |
+ FIELD_PREP(DA7280_AMP_PID_EN_MASK,
+ (haptics->amp_pid_en ? 1 : 0));
+
+ error = regmap_update_bits(haptics->regmap,
+ DA7280_TOP_CFG1, mask, val);
+ if (error)
+ goto 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 = FIELD_PREP(DA7280_PS_SEQ_ID_MASK, haptics->ps_seq_id) |
+ FIELD_PREP(DA7280_PS_SEQ_LOOP_MASK, haptics->ps_seq_loop);
+ error = regmap_write(haptics->regmap,
+ DA7280_SEQ_CTL2, val);
+ if (error)
+ goto error_i2c;
+
+ /* GPI(N) CTL */
+ for (i = 0; i < 3; i++) {
+ val = FIELD_PREP(DA7280_GPI0_SEQUENCE_ID_MASK,
+ haptics->gpi_ctl[i].seq_id) |
+ FIELD_PREP(DA7280_GPI0_MODE_MASK,
+ haptics->gpi_ctl[i].mode) |
+ FIELD_PREP(DA7280_GPI0_POLARITY_MASK,
+ haptics->gpi_ctl[i].polarity);
+ error = regmap_write(haptics->regmap,
+ DA7280_GPI_0_CTL + i, val);
+ if (error)
+ goto 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,
+ "da7280 init, i2c err: %d\n", error);
+ return error;
+}
+
+static int da7280_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct da7280_haptic *haptics;
+ struct input_dev *input_dev;
+ struct pwm_state state;
+ struct ff_device *ff;
+ int error;
+
+ haptics = devm_kzalloc(dev, sizeof(*haptics), GFP_KERNEL);
+ if (!haptics)
+ return -ENOMEM;
+ haptics->dev = dev;
+
+ if (!client->irq)
+ dev_err_probe(dev, -EINVAL, "No IRQ configured\n");
+
+ 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))
+ return dev_err_probe(dev, PTR_ERR(haptics->pwm_dev),
+ "Unable to request PWM\n");
+
+ /* Sync up PWM state and ensure it is off. */
+ pwm_init_state(haptics->pwm_dev, &state);
+ state.enabled = false;
+ error = pwm_apply_state(haptics->pwm_dev, &state);
+ if (error)
+ return dev_err_probe(dev, error,
+ "Failed to apply PWM state\n");
+
+ /*
+ * Check PWM period, PWM freq = 1000000 / state.period.
+ * The valid PWM freq range: 10k ~ 250kHz.
+ */
+ if (state.period > 100000 || state.period < 4000)
+ return dev_err_probe(dev, -EINVAL,
+ "Unsupported PWM period\n");
+ }
+
+ 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))
+ return dev_err_probe(dev, PTR_ERR(haptics->regmap),
+ "Failed to allocate register map\n");
+
+ error = da7280_init(haptics);
+ if (error)
+ return dev_err_probe(dev, error,
+ "Failed to initialize device\n");
+
+ /* Initialize input device for haptic device */
+ input_dev = devm_input_allocate_device(dev);
+ if (!input_dev)
+ return dev_err_probe(dev, -ENOMEM,
+ "Failed to allocate input device\n");
+
+ 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)
+ return dev_err_probe(dev, error,
+ "Create FF input device failed");
+
+ ff = input_dev->ff;
+ ff->upload = da7280_haptics_upload_effect;
+ ff->playback = da7280_haptics_playback;
+
+ error = input_register_device(input_dev);
+ if (error)
+ return dev_err_probe(dev, error,
+ "Failed to register input device\n");
+ error = devm_request_threaded_irq(dev, client->irq, NULL,
+ da7280_irq_handler,
+ IRQF_ONESHOT,
+ "da7280-haptics", haptics);
+ if (error)
+ return dev_err_probe(dev, error,
+ "Failed to request IRQ\n");
+ return 0;
+}
+
+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);
+
+ if (haptics->enabled)
+ da7280_haptic_disable(haptics);
+
+ error = regmap_update_bits(haptics->regmap,
+ DA7280_TOP_CTL1,
+ DA7280_STANDBY_EN_MASK, 0);
+ if (error)
+ dev_err(haptics->dev,
+ "da7280, suspend i2c err: %d\n", 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,
+ "da7280, resume i2c err: %d\n", 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 <Roy.Im.Opensource@diasemi.com>");
+MODULE_LICENSE("GPL");
--
end-of-patch for RESEND PATCH v20
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