Bump On 08/25/2014 10:26 AM, Murphy, Dan wrote: > Adding support for the DRV2667 haptic driver. > This device has the ability to store vibration > patterns in RAM and execute them once the GO bit > is set. > > The initial driver sets a basic waveform in the > first waveform sequence and will play the waveform > when the GO bit is set and will continously play > the waveform until the GO bit is unset. > > Data sheet is here: > http://www.ti.com/product/drv2667 > > Signed-off-by: Dan Murphy <dmur...@ti.com> > --- > > v2 - No updates since no comments - > https://patchwork.kernel.org/patch/4759391/ > > drivers/input/misc/Kconfig | 11 + > drivers/input/misc/Makefile | 1 + > drivers/input/misc/drv2667.c | 500 > ++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 512 insertions(+) > create mode 100644 drivers/input/misc/drv2667.c > > diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig > index 41d0ae6..51891f6 100644 > --- a/drivers/input/misc/Kconfig > +++ b/drivers/input/misc/Kconfig > @@ -687,4 +687,15 @@ config INPUT_DRV260X_HAPTICS > To compile this driver as a module, choose M here: the > module will be called drv260x-haptics. > > +config INPUT_DRV2667_HAPTICS > + tristate "TI DRV2667 haptics support" > + depends on INPUT && I2C > + select INPUT_FF_MEMLESS > + select REGMAP_I2C > + help > + Say Y to enable support for the TI DRV2667 haptics driver. > + > + To compile this driver as a module, choose M here: the > + module will be called drv260x-haptics. > + > endif > diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile > index cd4bc2d..e0cee17 100644 > --- a/drivers/input/misc/Makefile > +++ b/drivers/input/misc/Makefile > @@ -27,6 +27,7 @@ obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o > obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o > obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o > obj-$(CONFIG_INPUT_DRV260X_HAPTICS) += drv260x.o > +obj-$(CONFIG_INPUT_DRV2667_HAPTICS) += drv2667.o > obj-$(CONFIG_INPUT_GP2A) += gp2ap002a00f.o > obj-$(CONFIG_INPUT_GPIO_BEEPER) += gpio-beeper.o > obj-$(CONFIG_INPUT_GPIO_TILT_POLLED) += gpio_tilt_polled.o > diff --git a/drivers/input/misc/drv2667.c b/drivers/input/misc/drv2667.c > new file mode 100644 > index 0000000..0f43758 > --- /dev/null > +++ b/drivers/input/misc/drv2667.c > @@ -0,0 +1,500 @@ > +/* > + * DRV2667 haptics driver family > + * > + * Author: Dan Murphy <dmur...@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> > +#include <linux/input.h> > +#include <linux/module.h> > +#include <linux/platform_device.h> > +#include <linux/regmap.h> > +#include <linux/slab.h> > +#include <linux/delay.h> > +#include <linux/regulator/consumer.h> > + > +/* Contol registers */ > +#define DRV2667_STATUS 0x00 > +#define DRV2667_CTRL_1 0x01 > +#define DRV2667_CTRL_2 0x02 > +/* Waveform sequencer */ > +#define DRV2667_WV_SEQ_0 0x03 > +#define DRV2667_WV_SEQ_1 0x04 > +#define DRV2667_WV_SEQ_2 0x05 > +#define DRV2667_WV_SEQ_3 0x06 > +#define DRV2667_WV_SEQ_4 0x07 > +#define DRV2667_WV_SEQ_5 0x08 > +#define DRV2667_WV_SEQ_6 0x09 > +#define DRV2667_WV_SEQ_7 0x0A > +#define DRV2667_FIFO 0x0B > +#define DRV2667_PAGE 0xFF > +#define DRV2667_MAX_REG DRV2667_PAGE > + > +#define DRV2667_PAGE_0 0x00 > +#define DRV2667_PAGE_1 0x01 > +#define DRV2667_PAGE_2 0x02 > +#define DRV2667_PAGE_3 0x03 > +#define DRV2667_PAGE_4 0x04 > +#define DRV2667_PAGE_5 0x05 > +#define DRV2667_PAGE_6 0x06 > +#define DRV2667_PAGE_7 0x07 > +#define DRV2667_PAGE_8 0x08 > + > +/* RAM fields */ > +#define DRV2667_RAM_HDR_SZ 0x0 > +/* RAM Header addresses */ > +#define DRV2667_RAM_START_HI 0x01 > +#define DRV2667_RAM_START_LO 0x02 > +#define DRV2667_RAM_STOP_HI 0x03 > +#define DRV2667_RAM_STOP_LO 0x04 > +#define DRV2667_RAM_REPEAT_CT 0x05 > +/* RAM data addresses */ > +#define DRV2667_RAM_AMP 0x06 > +#define DRV2667_RAM_FREQ 0x07 > +#define DRV2667_RAM_DURATION 0x08 > +#define DRV2667_RAM_ENVELOPE 0x09 > + > +/* Control 1 Register */ > +#define DRV2667_25_VPP_GAIN 0x00 > +#define DRV2667_50_VPP_GAIN 0x01 > +#define DRV2667_75_VPP_GAIN 0x02 > +#define DRV2667_100_VPP_GAIN 0x03 > +#define DRV2667_DIGITAL_IN 0xfc > +#define DRV2667_ANALOG_IN (1 << 2) > + > +/* Control 2 Register */ > +#define DRV2667_GO (1 << 0) > +#define DRV2667_STANDBY (1 << 6) > +#define DRV2667_DEV_RST (1 << 7) > + > +/* RAM Envelope settings */ > +#define DRV2667_NO_ENV 0x00 > +#define DRV2667_32_MS_ENV 0x01 > +#define DRV2667_64_MS_ENV 0x02 > +#define DRV2667_96_MS_ENV 0x03 > +#define DRV2667_128_MS_ENV 0x04 > +#define DRV2667_160_MS_ENV 0x05 > +#define DRV2667_192_MS_ENV 0x06 > +#define DRV2667_224_MS_ENV 0x07 > +#define DRV2667_256_MS_ENV 0x08 > +#define DRV2667_512_MS_ENV 0x09 > +#define DRV2667_768_MS_ENV 0x0a > +#define DRV2667_1024_MS_ENV 0x0b > +#define DRV2667_1280_MS_ENV 0x0c > +#define DRV2667_1536_MS_ENV 0x0d > +#define DRV2667_1792_MS_ENV 0x0e > +#define DRV2667_2048_MS_ENV 0x0f > + > +/** > + * struct drv2667_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 > + * @magnitude - Magnitude of the vibration event > +**/ > +struct drv2667_data { > + struct input_dev *input_dev; > + struct i2c_client *client; > + struct regmap *regmap; > + struct work_struct work; > + struct regulator *regulator; > + u32 page; > + u32 magnitude; > + u32 frequency; > +}; > + > +static struct reg_default drv2667_reg_defs[] = { > + { DRV2667_STATUS, 0x02 }, > + { DRV2667_CTRL_1, 0x28 }, > + { DRV2667_CTRL_2, 0x40 }, > + { DRV2667_WV_SEQ_0, 0x00 }, > + { DRV2667_WV_SEQ_1, 0x00 }, > + { DRV2667_WV_SEQ_2, 0x00 }, > + { DRV2667_WV_SEQ_3, 0x00 }, > + { DRV2667_WV_SEQ_4, 0x00 }, > + { DRV2667_WV_SEQ_5, 0x00 }, > + { DRV2667_WV_SEQ_6, 0x00 }, > + { DRV2667_WV_SEQ_7, 0x00 }, > + { DRV2667_FIFO, 0x00 }, > + { DRV2667_PAGE, 0x00 }, > +}; > + > +static int drv2667_set_waveform_freq(struct drv2667_data *haptics) > +{ > + unsigned int read_buf; > + int freq; > + int error; > + > + /* Per the data sheet: > + * Sinusoid Frequency (Hz) = 7.8125 x Frequency > + */ > + freq = (haptics->frequency * 1000) / 78125; > + if (freq <= 0) { > + dev_err(&haptics->client->dev, > + "ERROR: Frequency calculated to %i\n", freq); > + return -EINVAL; > + } > + > + error = regmap_read(haptics->regmap, DRV2667_PAGE, &read_buf); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to read the page number: %d\n", error); > + return -EIO; > + } > + > + if (read_buf == DRV2667_PAGE_0 || > + haptics->page != read_buf) { > + error = regmap_write(haptics->regmap, > + DRV2667_PAGE, haptics->page); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to set the page: %d\n", error); > + return -EIO; > + } > + } > + > + error = regmap_write(haptics->regmap, DRV2667_RAM_FREQ, freq); > + if (error) > + dev_err(&haptics->client->dev, > + "Failed to set the frequency: %d\n", error); > + > + /* Reset back to original page */ > + if (read_buf == DRV2667_PAGE_0 || > + haptics->page != read_buf) { > + error = regmap_write(haptics->regmap, DRV2667_PAGE, read_buf); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to set the page: %d\n", error); > + return -EIO; > + } > + } > + > + return error; > +} > + > +static void drv2667_worker(struct work_struct *work) > +{ > + struct drv2667_data *haptics = container_of(work, struct drv2667_data, > work); > + int error; > + > + if (haptics->magnitude) { > + error = regmap_write(haptics->regmap, > + DRV2667_PAGE, haptics->page); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to set the page: %d\n", error); > + return; > + } > + > + error = regmap_write(haptics->regmap, DRV2667_RAM_AMP, > + haptics->magnitude); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to set the amplitude: %d\n", error); > + return; > + } > + > + error = regmap_write(haptics->regmap, > + DRV2667_PAGE, DRV2667_PAGE_0); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to set the page: %d\n", error); > + return; > + } > + > + error = regmap_write(haptics->regmap, > + DRV2667_CTRL_2, DRV2667_GO); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to set the GO bit: %d\n", error); > + } > + } else { > + error = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2, > + DRV2667_GO, 0); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to unset the GO bit: %d\n", error); > + } > + } > +} > + > +static int drv2667_haptics_play(struct input_dev *input, void *data, > + struct ff_effect *effect) > +{ > + struct drv2667_data *haptics = input_get_drvdata(input); > + > + 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 void drv2667_close(struct input_dev *input) > +{ > + struct drv2667_data *haptics = input_get_drvdata(input); > + int error; > + > + cancel_work_sync(&haptics->work); > + > + error = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2, > + DRV2667_STANDBY, 1); > + if (error) > + dev_err(&haptics->client->dev, > + "Failed to enter standby mode: %d\n", error); > +} > + > +static const struct reg_default drv2667_init_regs[] = { > + { DRV2667_CTRL_2, 0 }, > + { DRV2667_CTRL_1, DRV2667_25_VPP_GAIN }, > + { DRV2667_WV_SEQ_0, 1 }, > + { DRV2667_WV_SEQ_1, 0 } > +}; > + > +static const struct reg_default drv2667_page1_init[] = { > + { DRV2667_RAM_HDR_SZ, 0x05 }, > + { DRV2667_RAM_START_HI, 0x80 }, > + { DRV2667_RAM_START_LO, 0x06 }, > + { DRV2667_RAM_STOP_HI, 0x00 }, > + { DRV2667_RAM_STOP_LO, 0x09 }, > + { DRV2667_RAM_REPEAT_CT, 0 }, > + { DRV2667_RAM_DURATION, 0x05 }, > + { DRV2667_RAM_ENVELOPE, DRV2667_NO_ENV }, > + { DRV2667_RAM_AMP, 0x60 }, > +}; > + > +static int drv2667_init(struct drv2667_data *haptics) > +{ > + int error; > + > + /* Set default haptic frequency to 195Hz on Page 1*/ > + haptics->frequency = 195; > + haptics->page = DRV2667_PAGE_1; > + > + error = regmap_register_patch(haptics->regmap, > + drv2667_init_regs, > + ARRAY_SIZE(drv2667_init_regs)); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to write init registers: %d\n", > + error); > + return error; > + } > + > + error = regmap_write(haptics->regmap, DRV2667_PAGE, haptics->page); > + if (error) { > + dev_err(&haptics->client->dev, "Failed to set page: %d\n", > + error); > + goto error_out; > + } > + > + error = drv2667_set_waveform_freq(haptics); > + if (error) > + goto error_page; > + > + error = regmap_register_patch(haptics->regmap, > + drv2667_page1_init, > + ARRAY_SIZE(drv2667_page1_init)); > + if (error) { > + dev_err(&haptics->client->dev, > + "Failed to write page registers: %d\n", > + error); > + return error; > + } > + > + error = regmap_write(haptics->regmap, DRV2667_PAGE, DRV2667_PAGE_0); > + return error; > + > +error_page: > + regmap_write(haptics->regmap, DRV2667_PAGE, DRV2667_PAGE_0); > +error_out: > + return error; > +} > + > +static const struct regmap_config drv2667_regmap_config = { > + .reg_bits = 8, > + .val_bits = 8, > + > + .max_register = DRV2667_MAX_REG, > + .reg_defaults = drv2667_reg_defs, > + .num_reg_defaults = ARRAY_SIZE(drv2667_reg_defs), > + .cache_type = REGCACHE_NONE, > +}; > + > +static int drv2667_probe(struct i2c_client *client, > + const struct i2c_device_id *id) > +{ > + struct drv2667_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 = "drv2667:haptics"; > + haptics->input_dev->dev.parent = client->dev.parent; > + haptics->input_dev->close = drv2667_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, > + drv2667_haptics_play); > + if (error) { > + dev_err(&client->dev, "input_ff_create() failed: %d\n", > + error); > + return error; > + } > + > + INIT_WORK(&haptics->work, drv2667_worker); > + > + haptics->client = client; > + i2c_set_clientdata(client, haptics); > + > + haptics->regmap = devm_regmap_init_i2c(client, &drv2667_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 = drv2667_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; > +} > + > +#ifdef CONFIG_PM_SLEEP > +static int drv2667_suspend(struct device *dev) > +{ > + struct drv2667_data *haptics = dev_get_drvdata(dev); > + int ret = 0; > + > + mutex_lock(&haptics->input_dev->mutex); > + > + if (haptics->input_dev->users) { > + ret = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2, > + DRV2667_STANDBY, 1); > + 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, > + DRV2667_CTRL_2, > + DRV2667_STANDBY, 0); > + } > + } > +out: > + mutex_unlock(&haptics->input_dev->mutex); > + return ret; > +} > + > +static int drv2667_resume(struct device *dev) > +{ > + struct drv2667_data *haptics = dev_get_drvdata(dev); > + int ret = 0; > + > + mutex_lock(&haptics->input_dev->mutex); > + > + if (haptics->input_dev->users) { > + ret = regulator_enable(haptics->regulator); > + if (ret) { > + dev_err(dev, "Failed to enable regulator\n"); > + goto out; > + } > + > + ret = regmap_update_bits(haptics->regmap, DRV2667_CTRL_2, > + DRV2667_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; > +} > +#endif > + > +static SIMPLE_DEV_PM_OPS(drv2667_pm_ops, drv2667_suspend, drv2667_resume); > + > +static const struct i2c_device_id drv2667_id[] = { > + { "drv2667", 0 }, > + { } > +}; > +MODULE_DEVICE_TABLE(i2c, drv2667_id); > + > +#ifdef CONFIG_OF > +static const struct of_device_id drv2667_of_match[] = { > + { .compatible = "ti,drv2667", }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, drv2667_of_match); > +#endif > + > +static struct i2c_driver drv2667_driver = { > + .probe = drv2667_probe, > + .driver = { > + .name = "drv2667-haptics", > + .owner = THIS_MODULE, > + .of_match_table = of_match_ptr(drv2667_of_match), > + .pm = &drv2667_pm_ops, > + }, > + .id_table = drv2667_id, > +}; > +module_i2c_driver(drv2667_driver); > + > +MODULE_ALIAS("platform:drv2667-haptics"); > +MODULE_DESCRIPTION("TI DRV2667 haptics driver"); > +MODULE_LICENSE("GPL"); > +MODULE_AUTHOR("Dan Murphy <dmur...@ti.com>"); >
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