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path: root/drivers/input/misc/drv260x.c
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Diffstat (limited to 'drivers/input/misc/drv260x.c')
-rw-r--r--drivers/input/misc/drv260x.c159
1 files changed, 55 insertions, 104 deletions
diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c
index 17eb84ab4c0b..96cd6a078c8a 100644
--- a/drivers/input/misc/drv260x.c
+++ b/drivers/input/misc/drv260x.c
@@ -1,18 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* DRV260X haptics driver family
*
* Author: Dan Murphy <dmurphy@ti.com>
*
* Copyright: (C) 2014 Texas Instruments, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
*/
#include <linux/i2c.h>
@@ -157,7 +149,7 @@
/* Control 3 Register */
#define DRV260X_LRA_OPEN_LOOP (1 << 0)
-#define DRV260X_ANANLOG_IN (1 << 1)
+#define DRV260X_ANALOG_IN (1 << 1)
#define DRV260X_LRA_DRV_MODE (1 << 2)
#define DRV260X_RTP_UNSIGNED_DATA (1 << 3)
#define DRV260X_SUPPLY_COMP_DIS (1 << 4)
@@ -175,17 +167,17 @@
/**
* struct drv260x_data -
- * @input_dev - Pointer to the input device
- * @client - Pointer to the I2C client
- * @regmap - Register map of the device
- * @work - Work item used to off load the enable/disable of the vibration
- * @enable_gpio - Pointer to the gpio used for enable/disabling
- * @regulator - Pointer to the regulator for the IC
- * @magnitude - Magnitude of the vibration event
- * @mode - The operating mode of the IC (LRA_NO_CAL, ERM or LRA)
- * @library - The vibration library to be used
- * @rated_voltage - The rated_voltage of the actuator
- * @overdriver_voltage - The over drive voltage of the actuator
+ * @input_dev: Pointer to the input device
+ * @client: Pointer to the I2C client
+ * @regmap: Register map of the device
+ * @work: Work item used to off load the enable/disable of the vibration
+ * @enable_gpio: Pointer to the gpio used for enable/disabling
+ * @regulator: Pointer to the regulator for the IC
+ * @magnitude: Magnitude of the vibration event
+ * @mode: The operating mode of the IC (LRA_NO_CAL, ERM or LRA)
+ * @library: The vibration library to be used
+ * @rated_voltage: The rated_voltage of the actuator
+ * @overdrive_voltage: The over drive voltage of the actuator
**/
struct drv260x_data {
struct input_dev *input_dev;
@@ -194,60 +186,22 @@ struct drv260x_data {
struct work_struct work;
struct gpio_desc *enable_gpio;
struct regulator *regulator;
- u32 magnitude;
+ u8 magnitude;
u32 mode;
u32 library;
int rated_voltage;
int overdrive_voltage;
};
-static const struct reg_default drv260x_reg_defs[] = {
- { DRV260X_STATUS, 0xe0 },
- { DRV260X_MODE, 0x40 },
- { DRV260X_RT_PB_IN, 0x00 },
- { DRV260X_LIB_SEL, 0x00 },
- { DRV260X_WV_SEQ_1, 0x01 },
- { DRV260X_WV_SEQ_2, 0x00 },
- { DRV260X_WV_SEQ_3, 0x00 },
- { DRV260X_WV_SEQ_4, 0x00 },
- { DRV260X_WV_SEQ_5, 0x00 },
- { DRV260X_WV_SEQ_6, 0x00 },
- { DRV260X_WV_SEQ_7, 0x00 },
- { DRV260X_WV_SEQ_8, 0x00 },
- { DRV260X_GO, 0x00 },
- { DRV260X_OVERDRIVE_OFF, 0x00 },
- { DRV260X_SUSTAIN_P_OFF, 0x00 },
- { DRV260X_SUSTAIN_N_OFF, 0x00 },
- { DRV260X_BRAKE_OFF, 0x00 },
- { DRV260X_A_TO_V_CTRL, 0x05 },
- { DRV260X_A_TO_V_MIN_INPUT, 0x19 },
- { DRV260X_A_TO_V_MAX_INPUT, 0xff },
- { DRV260X_A_TO_V_MIN_OUT, 0x19 },
- { DRV260X_A_TO_V_MAX_OUT, 0xff },
- { DRV260X_RATED_VOLT, 0x3e },
- { DRV260X_OD_CLAMP_VOLT, 0x8c },
- { DRV260X_CAL_COMP, 0x0c },
- { DRV260X_CAL_BACK_EMF, 0x6c },
- { DRV260X_FEEDBACK_CTRL, 0x36 },
- { DRV260X_CTRL1, 0x93 },
- { DRV260X_CTRL2, 0xfa },
- { DRV260X_CTRL3, 0xa0 },
- { DRV260X_CTRL4, 0x20 },
- { DRV260X_CTRL5, 0x80 },
- { DRV260X_LRA_LOOP_PERIOD, 0x33 },
- { DRV260X_VBAT_MON, 0x00 },
- { DRV260X_LRA_RES_PERIOD, 0x00 },
-};
-
#define DRV260X_DEF_RATED_VOLT 0x90
#define DRV260X_DEF_OD_CLAMP_VOLT 0x90
-/**
+/*
* Rated and Overdriver Voltages:
* Calculated using the formula r = v * 255 / 5.6
* where r is what will be written to the register
* and v is the rated or overdriver voltage of the actuator
- **/
+ */
static int drv260x_calculate_voltage(unsigned int voltage)
{
return (voltage * 255 / 5600);
@@ -283,10 +237,11 @@ static int drv260x_haptics_play(struct input_dev *input, void *data,
haptics->mode = DRV260X_LRA_NO_CAL_MODE;
+ /* Scale u16 magnitude into u8 register value */
if (effect->u.rumble.strong_magnitude > 0)
- haptics->magnitude = effect->u.rumble.strong_magnitude;
+ haptics->magnitude = effect->u.rumble.strong_magnitude >> 8;
else if (effect->u.rumble.weak_magnitude > 0)
- haptics->magnitude = effect->u.rumble.weak_magnitude;
+ haptics->magnitude = effect->u.rumble.weak_magnitude >> 8;
else
haptics->magnitude = 0;
@@ -312,7 +267,7 @@ static void drv260x_close(struct input_dev *input)
static const struct reg_sequence drv260x_lra_cal_regs[] = {
{ DRV260X_MODE, DRV260X_AUTO_CAL },
- { DRV260X_CTRL3, DRV260X_NG_THRESH_2 },
+ { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_RTP_UNSIGNED_DATA },
{ DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE |
DRV260X_BRAKE_FACTOR_4X | DRV260X_LOOP_GAIN_HIGH },
};
@@ -330,7 +285,7 @@ static const struct reg_sequence drv260x_lra_init_regs[] = {
DRV260X_BEMF_GAIN_3 },
{ DRV260X_CTRL1, DRV260X_STARTUP_BOOST },
{ DRV260X_CTRL2, DRV260X_SAMP_TIME_250 },
- { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_ANANLOG_IN },
+ { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_RTP_UNSIGNED_DATA | DRV260X_ANALOG_IN },
{ DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS },
};
@@ -345,7 +300,7 @@ static const struct reg_sequence drv260x_erm_cal_regs[] = {
{ DRV260X_CTRL1, DRV260X_STARTUP_BOOST },
{ DRV260X_CTRL2, DRV260X_SAMP_TIME_250 | DRV260X_BLANK_TIME_75 |
DRV260X_IDISS_TIME_75 },
- { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_ERM_OPEN_LOOP },
+ { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_RTP_UNSIGNED_DATA },
{ DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS },
};
@@ -443,6 +398,7 @@ static int drv260x_init(struct drv260x_data *haptics)
}
do {
+ usleep_range(15000, 15500);
error = regmap_read(haptics->regmap, DRV260X_GO, &cal_buf);
if (error) {
dev_err(&haptics->client->dev,
@@ -460,13 +416,10 @@ static const struct regmap_config drv260x_regmap_config = {
.val_bits = 8,
.max_register = DRV260X_MAX_REG,
- .reg_defaults = drv260x_reg_defs,
- .num_reg_defaults = ARRAY_SIZE(drv260x_reg_defs),
.cache_type = REGCACHE_NONE,
};
-static int drv260x_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int drv260x_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct drv260x_data *haptics;
@@ -581,73 +534,71 @@ static int drv260x_probe(struct i2c_client *client,
return 0;
}
-static int __maybe_unused drv260x_suspend(struct device *dev)
+static int drv260x_suspend(struct device *dev)
{
struct drv260x_data *haptics = dev_get_drvdata(dev);
- int ret = 0;
+ int error;
- mutex_lock(&haptics->input_dev->mutex);
+ guard(mutex)(&haptics->input_dev->mutex);
- if (haptics->input_dev->users) {
- ret = regmap_update_bits(haptics->regmap,
- DRV260X_MODE,
- DRV260X_STANDBY_MASK,
- DRV260X_STANDBY);
- if (ret) {
+ if (input_device_enabled(haptics->input_dev)) {
+ error = regmap_update_bits(haptics->regmap,
+ DRV260X_MODE,
+ DRV260X_STANDBY_MASK,
+ DRV260X_STANDBY);
+ if (error) {
dev_err(dev, "Failed to set standby mode\n");
- goto out;
+ return error;
}
gpiod_set_value(haptics->enable_gpio, 0);
- ret = regulator_disable(haptics->regulator);
- if (ret) {
+ error = regulator_disable(haptics->regulator);
+ if (error) {
dev_err(dev, "Failed to disable regulator\n");
regmap_update_bits(haptics->regmap,
DRV260X_MODE,
DRV260X_STANDBY_MASK, 0);
+ return error;
}
}
-out:
- mutex_unlock(&haptics->input_dev->mutex);
- return ret;
+
+ return 0;
}
-static int __maybe_unused drv260x_resume(struct device *dev)
+static int drv260x_resume(struct device *dev)
{
struct drv260x_data *haptics = dev_get_drvdata(dev);
- int ret = 0;
+ int error;
- mutex_lock(&haptics->input_dev->mutex);
+ guard(mutex)(&haptics->input_dev->mutex);
- if (haptics->input_dev->users) {
- ret = regulator_enable(haptics->regulator);
- if (ret) {
+ if (input_device_enabled(haptics->input_dev)) {
+ error = regulator_enable(haptics->regulator);
+ if (error) {
dev_err(dev, "Failed to enable regulator\n");
- goto out;
+ return error;
}
- ret = regmap_update_bits(haptics->regmap,
- DRV260X_MODE,
- DRV260X_STANDBY_MASK, 0);
- if (ret) {
+ error = regmap_update_bits(haptics->regmap,
+ DRV260X_MODE,
+ DRV260X_STANDBY_MASK, 0);
+ if (error) {
dev_err(dev, "Failed to unset standby mode\n");
regulator_disable(haptics->regulator);
- goto out;
+ return error;
}
gpiod_set_value(haptics->enable_gpio, 1);
}
-out:
- mutex_unlock(&haptics->input_dev->mutex);
- return ret;
+ return 0;
}
-static SIMPLE_DEV_PM_OPS(drv260x_pm_ops, drv260x_suspend, drv260x_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(drv260x_pm_ops, drv260x_suspend, drv260x_resume);
static const struct i2c_device_id drv260x_id[] = {
- { "drv2605l", 0 },
+ { "drv2605l" },
{ }
};
MODULE_DEVICE_TABLE(i2c, drv260x_id);
@@ -666,7 +617,7 @@ static struct i2c_driver drv260x_driver = {
.driver = {
.name = "drv260x-haptics",
.of_match_table = drv260x_of_match,
- .pm = &drv260x_pm_ops,
+ .pm = pm_sleep_ptr(&drv260x_pm_ops),
},
.id_table = drv260x_id,
};
generated by cgit (git 2.34.1) at 2025-12-25 05:12:07 +0000