| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Dan Murphy | 1316 | 98.95% | 1 | 12.50% |
| Andrzej Pietrasiewicz | 6 | 0.45% | 1 | 12.50% |
| Florian Vaussard | 2 | 0.15% | 1 | 12.50% |
| Thomas Gleixner | 2 | 0.15% | 1 | 12.50% |
| Lee Jones | 1 | 0.08% | 1 | 12.50% |
| Nariman Poushin | 1 | 0.08% | 1 | 12.50% |
| Axel Lin | 1 | 0.08% | 1 | 12.50% |
| Uwe Kleine-König | 1 | 0.08% | 1 | 12.50% |
| Total | 1330 | 8 |
// SPDX-License-Identifier: GPL-2.0-only /* * DRV2665 haptics driver family * * Author: Dan Murphy <dmurphy@ti.com> * * Copyright: (C) 2015 Texas Instruments, Inc. */ #include <linux/i2c.h> #include <linux/input.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/regulator/consumer.h> /* Contol registers */ #define DRV2665_STATUS 0x00 #define DRV2665_CTRL_1 0x01 #define DRV2665_CTRL_2 0x02 #define DRV2665_FIFO 0x0b /* Status Register */ #define DRV2665_FIFO_FULL BIT(0) #define DRV2665_FIFO_EMPTY BIT(1) /* Control 1 Register */ #define DRV2665_25_VPP_GAIN 0x00 #define DRV2665_50_VPP_GAIN 0x01 #define DRV2665_75_VPP_GAIN 0x02 #define DRV2665_100_VPP_GAIN 0x03 #define DRV2665_DIGITAL_IN 0xfc #define DRV2665_ANALOG_IN BIT(2) /* Control 2 Register */ #define DRV2665_BOOST_EN BIT(1) #define DRV2665_STANDBY BIT(6) #define DRV2665_DEV_RST BIT(7) #define DRV2665_5_MS_IDLE_TOUT 0x00 #define DRV2665_10_MS_IDLE_TOUT 0x04 #define DRV2665_15_MS_IDLE_TOUT 0x08 #define DRV2665_20_MS_IDLE_TOUT 0x0c /** * struct drv2665_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 * @regulator: Pointer to the regulator for the IC */ struct drv2665_data { struct input_dev *input_dev; struct i2c_client *client; struct regmap *regmap; struct work_struct work; struct regulator *regulator; }; /* 8kHz Sine wave to stream to the FIFO */ static const u8 drv2665_sine_wave_form[] = { 0x00, 0x10, 0x20, 0x2e, 0x3c, 0x48, 0x53, 0x5b, 0x61, 0x65, 0x66, 0x65, 0x61, 0x5b, 0x53, 0x48, 0x3c, 0x2e, 0x20, 0x10, 0x00, 0xf0, 0xe0, 0xd2, 0xc4, 0xb8, 0xad, 0xa5, 0x9f, 0x9b, 0x9a, 0x9b, 0x9f, 0xa5, 0xad, 0xb8, 0xc4, 0xd2, 0xe0, 0xf0, 0x00, }; static const struct reg_default drv2665_reg_defs[] = { { DRV2665_STATUS, 0x02 }, { DRV2665_CTRL_1, 0x28 }, { DRV2665_CTRL_2, 0x40 }, { DRV2665_FIFO, 0x00 }, }; static void drv2665_worker(struct work_struct *work) { struct drv2665_data *haptics = container_of(work, struct drv2665_data, work); unsigned int read_buf; int error; error = regmap_read(haptics->regmap, DRV2665_STATUS, &read_buf); if (error) { dev_err(&haptics->client->dev, "Failed to read status: %d\n", error); return; } if (read_buf & DRV2665_FIFO_EMPTY) { error = regmap_bulk_write(haptics->regmap, DRV2665_FIFO, drv2665_sine_wave_form, ARRAY_SIZE(drv2665_sine_wave_form)); if (error) { dev_err(&haptics->client->dev, "Failed to write FIFO: %d\n", error); return; } } } static int drv2665_haptics_play(struct input_dev *input, void *data, struct ff_effect *effect) { struct drv2665_data *haptics = input_get_drvdata(input); schedule_work(&haptics->work); return 0; } static void drv2665_close(struct input_dev *input) { struct drv2665_data *haptics = input_get_drvdata(input); int error; cancel_work_sync(&haptics->work); error = regmap_update_bits(haptics->regmap, DRV2665_CTRL_2, DRV2665_STANDBY, DRV2665_STANDBY); if (error) dev_err(&haptics->client->dev, "Failed to enter standby mode: %d\n", error); } static const struct reg_sequence drv2665_init_regs[] = { { DRV2665_CTRL_2, 0 | DRV2665_10_MS_IDLE_TOUT }, { DRV2665_CTRL_1, DRV2665_25_VPP_GAIN }, }; static int drv2665_init(struct drv2665_data *haptics) { int error; error = regmap_register_patch(haptics->regmap, drv2665_init_regs, ARRAY_SIZE(drv2665_init_regs)); if (error) { dev_err(&haptics->client->dev, "Failed to write init registers: %d\n", error); return error; } return 0; } static const struct regmap_config drv2665_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = DRV2665_FIFO, .reg_defaults = drv2665_reg_defs, .num_reg_defaults = ARRAY_SIZE(drv2665_reg_defs), .cache_type = REGCACHE_NONE, }; static int drv2665_probe(struct i2c_client *client) { struct drv2665_data *haptics; int error; haptics = devm_kzalloc(&client->dev, sizeof(*haptics), GFP_KERNEL); if (!haptics) return -ENOMEM; haptics->regulator = devm_regulator_get(&client->dev, "vbat"); if (IS_ERR(haptics->regulator)) { error = PTR_ERR(haptics->regulator); dev_err(&client->dev, "unable to get regulator, error: %d\n", error); return error; } haptics->input_dev = devm_input_allocate_device(&client->dev); if (!haptics->input_dev) { dev_err(&client->dev, "Failed to allocate input device\n"); return -ENOMEM; } haptics->input_dev->name = "drv2665:haptics"; haptics->input_dev->dev.parent = client->dev.parent; haptics->input_dev->close = drv2665_close; input_set_drvdata(haptics->input_dev, haptics); input_set_capability(haptics->input_dev, EV_FF, FF_RUMBLE); error = input_ff_create_memless(haptics->input_dev, NULL, drv2665_haptics_play); if (error) { dev_err(&client->dev, "input_ff_create() failed: %d\n", error); return error; } INIT_WORK(&haptics->work, drv2665_worker); haptics->client = client; i2c_set_clientdata(client, haptics); haptics->regmap = devm_regmap_init_i2c(client, &drv2665_regmap_config); if (IS_ERR(haptics->regmap)) { error = PTR_ERR(haptics->regmap); dev_err(&client->dev, "Failed to allocate register map: %d\n", error); return error; } error = drv2665_init(haptics); if (error) { dev_err(&client->dev, "Device init failed: %d\n", error); return error; } error = input_register_device(haptics->input_dev); if (error) { dev_err(&client->dev, "couldn't register input device: %d\n", error); return error; } return 0; } static int __maybe_unused drv2665_suspend(struct device *dev) { struct drv2665_data *haptics = dev_get_drvdata(dev); int ret = 0; mutex_lock(&haptics->input_dev->mutex); if (input_device_enabled(haptics->input_dev)) { ret = regmap_update_bits(haptics->regmap, DRV2665_CTRL_2, DRV2665_STANDBY, DRV2665_STANDBY); if (ret) { dev_err(dev, "Failed to set standby mode\n"); regulator_disable(haptics->regulator); goto out; } ret = regulator_disable(haptics->regulator); if (ret) { dev_err(dev, "Failed to disable regulator\n"); regmap_update_bits(haptics->regmap, DRV2665_CTRL_2, DRV2665_STANDBY, 0); } } out: mutex_unlock(&haptics->input_dev->mutex); return ret; } static int __maybe_unused drv2665_resume(struct device *dev) { struct drv2665_data *haptics = dev_get_drvdata(dev); int ret = 0; mutex_lock(&haptics->input_dev->mutex); if (input_device_enabled(haptics->input_dev)) { ret = regulator_enable(haptics->regulator); if (ret) { dev_err(dev, "Failed to enable regulator\n"); goto out; } ret = regmap_update_bits(haptics->regmap, DRV2665_CTRL_2, DRV2665_STANDBY, 0); if (ret) { dev_err(dev, "Failed to unset standby mode\n"); regulator_disable(haptics->regulator); goto out; } } out: mutex_unlock(&haptics->input_dev->mutex); return ret; } static SIMPLE_DEV_PM_OPS(drv2665_pm_ops, drv2665_suspend, drv2665_resume); static const struct i2c_device_id drv2665_id[] = { { "drv2665", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, drv2665_id); #ifdef CONFIG_OF static const struct of_device_id drv2665_of_match[] = { { .compatible = "ti,drv2665", }, { } }; MODULE_DEVICE_TABLE(of, drv2665_of_match); #endif static struct i2c_driver drv2665_driver = { .probe_new = drv2665_probe, .driver = { .name = "drv2665-haptics", .of_match_table = of_match_ptr(drv2665_of_match), .pm = &drv2665_pm_ops, }, .id_table = drv2665_id, }; module_i2c_driver(drv2665_driver); MODULE_DESCRIPTION("TI DRV2665 haptics driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1