Bump On 07/31/2014 02:14 PM, Murphy, Dan wrote: > Add the TI drv260x haptics/vibrator driver. > This device uses the input force feedback > to produce a wave form to driver an > ERM or LRA actuator device. > > The initial driver supports the devices > real time playback mode. But the device > has additional wave patterns in ROM. > > This functionality will be added in > future patchsets. > > Product data sheet is located here: > http://www.ti.com/product/drv2605 > > Signed-off-by: Dan Murphy <dmur...@ti.com> > --- > > v5 - Move register defines to c file and rm header file, error check > init in probe, fixed identation, remove empty labels in probe > and just return on fail and removed the remove callback and function. > Did not factor out the suspend into a stop function. - > https://patchwork.kernel.org/patch/4649631/ > v4 - Convert regulator to devm, added error checking where required, > updated bindings doc, moved dt parsing to separate call and made platform > data the first data point, moved vibrator enable and mode programming from > play entry to worker thread, added user check and input mutex in > suspend/resume > calls, moved platform data to individual file and into include platform-data > directory, > removed file names from file headers - > https://patchwork.kernel.org/patch/4642221/ > v3 - Updated binding doc, changed to memless device, updated input alloc to > devm, removed mutex locking, add sanity checks for mode and library - > https://patchwork.kernel.org/patch/4635421/ > v2 - Fixed binding doc and patch headline - > https://patchwork.kernel.org/patch/4619641/ > > > .../devicetree/bindings/input/ti,drv260x.txt | 50 ++ > drivers/input/misc/Kconfig | 9 + > drivers/input/misc/Makefile | 1 + > drivers/input/misc/drv260x.c | 697 > ++++++++++++++++++++ > include/dt-bindings/input/ti-drv260x.h | 35 + > include/linux/platform_data/drv260x-pdata.h | 29 + > 6 files changed, 821 insertions(+) > create mode 100644 Documentation/devicetree/bindings/input/ti,drv260x.txt > create mode 100644 drivers/input/misc/drv260x.c > create mode 100644 include/dt-bindings/input/ti-drv260x.h > create mode 100644 include/linux/platform_data/drv260x-pdata.h > > diff --git a/Documentation/devicetree/bindings/input/ti,drv260x.txt > b/Documentation/devicetree/bindings/input/ti,drv260x.txt > new file mode 100644 > index 0000000..8e6970d > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/ti,drv260x.txt > @@ -0,0 +1,50 @@ > +Texas Instruments - drv260x Haptics driver family > + > +The drv260x family serial control bus communicates through I2C protocols > + > +Required properties: > + - compatible - One of: > + "ti,drv2604" - DRV2604 > + "ti,drv2605" - DRV2605 > + "ti,drv2605l" - DRV2605L > + - reg - I2C slave address > + - supply- Required supply regulators are: > + "vbat" - battery voltage > + - mode - Power up mode of the chip (defined in > include/dt-bindings/input/ti-drv260x.h) > + DRV260X_LRA_MODE - Linear Resonance Actuator mode > (Piezoelectric) > + DRV260X_LRA_NO_CAL_MODE - This is a LRA Mode but there is no > calibration > + sequence during init. And the device is > configured for real > + time playback mode (RTP mode). > + DRV260X_ERM_MODE - Eccentric Rotating Mass mode (Rotary > vibrator) > + - library-sel - These are ROM based waveforms pre-programmed into the > IC. > + This should be set to set the library to use at > power up. > + (defined in > include/dt-bindings/input/ti-drv260x.h) > + DRV260X_LIB_A - Pre-programmed Library > + DRV260X_LIB_B - Pre-programmed Library > + DRV260X_LIB_C - Pre-programmed Library > + DRV260X_LIB_D - Pre-programmed Library > + DRV260X_LIB_E - Pre-programmed Library > + DRV260X_LIB_F - Pre-programmed Library > + > +Optional properties: > + - enable-gpio - gpio pin to enable/disable the device. > + - vib_rated_voltage - The rated voltage of the actuator in millivolts. > + If this is not set then the value will be defaulted to > + 3.2 v. > + - vib_overdrive_voltage - The overdrive voltage of the actuator in > millivolts. > + If this is not set then the value will be defaulted to > + 3.2 v. > +Example: > + > +drv2605l: drv2605l@5a { > + compatible = "ti,drv2605l"; > + reg = <0x5a>; > + enable-gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>; > + mode = <DRV260X_LRA_MODE>; > + library-sel = <DRV260X_LIB_SEL_DEFAULT>; > + vib-rated-voltage = <3200>; > + vib-overdriver-voltage = <3200>; > +}; > + > +For more product information please see the link below: > +http://www.ti.com/product/drv2605 > diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig > index 2ff4425..99f6762 100644 > --- a/drivers/input/misc/Kconfig > +++ b/drivers/input/misc/Kconfig > @@ -676,4 +676,13 @@ config INPUT_SOC_BUTTON_ARRAY > To compile this driver as a module, choose M here: the > module will be called soc_button_array. > > +config INPUT_DRV260X_HAPTICS > + tristate "TI DRV260X haptics support" > + depends on INPUT && I2C > + help > + Say Y to enable support for the TI DRV260X 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 4955ad3..d8ef3c7 100644 > --- a/drivers/input/misc/Makefile > +++ b/drivers/input/misc/Makefile > @@ -64,3 +64,4 @@ obj-$(CONFIG_INPUT_WM831X_ON) += wm831x-on.o > obj-$(CONFIG_INPUT_XEN_KBDDEV_FRONTEND) += xen-kbdfront.o > obj-$(CONFIG_INPUT_YEALINK) += yealink.o > obj-$(CONFIG_INPUT_IDEAPAD_SLIDEBAR) += ideapad_slidebar.o > +obj-$(CONFIG_INPUT_DRV260X_HAPTICS) += drv260x.o > diff --git a/drivers/input/misc/drv260x.c b/drivers/input/misc/drv260x.c > new file mode 100644 > index 0000000..6ccdeff > --- /dev/null > +++ b/drivers/input/misc/drv260x.c > @@ -0,0 +1,697 @@ > +/* > + * DRV260X 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/of_gpio.h> > +#include <linux/platform_device.h> > +#include <linux/regmap.h> > +#include <linux/slab.h> > +#include <linux/delay.h> > +#include <linux/regulator/consumer.h> > + > +#include <dt-bindings/input/ti-drv260x.h> > +#include <linux/platform_data/drv260x-pdata.h> > + > +#define DRV260X_STATUS 0x0 > +#define DRV260X_MODE 0x1 > +#define DRV260X_RT_PB_IN 0x2 > +#define DRV260X_LIB_SEL 0x3 > +#define DRV260X_WV_SEQ_1 0x4 > +#define DRV260X_WV_SEQ_2 0x5 > +#define DRV260X_WV_SEQ_3 0x6 > +#define DRV260X_WV_SEQ_4 0x7 > +#define DRV260X_WV_SEQ_5 0x8 > +#define DRV260X_WV_SEQ_6 0x9 > +#define DRV260X_WV_SEQ_7 0xa > +#define DRV260X_WV_SEQ_8 0xb > +#define DRV260X_GO 0xc > +#define DRV260X_OVERDRIVE_OFF 0xd > +#define DRV260X_SUSTAIN_P_OFF 0xe > +#define DRV260X_SUSTAIN_N_OFF 0xf > +#define DRV260X_BRAKE_OFF 0x10 > +#define DRV260X_A_TO_V_CTRL 0x11 > +#define DRV260X_A_TO_V_MIN_INPUT 0x12 > +#define DRV260X_A_TO_V_MAX_INPUT 0x13 > +#define DRV260X_A_TO_V_MIN_OUT 0x14 > +#define DRV260X_A_TO_V_MAX_OUT 0x15 > +#define DRV260X_RATED_VOLT 0x16 > +#define DRV260X_OD_CLAMP_VOLT 0x17 > +#define DRV260X_CAL_COMP 0x18 > +#define DRV260X_CAL_BACK_EMF 0x19 > +#define DRV260X_FEEDBACK_CTRL 0x1a > +#define DRV260X_CTRL1 0x1b > +#define DRV260X_CTRL2 0x1c > +#define DRV260X_CTRL3 0x1d > +#define DRV260X_CTRL4 0x1e > +#define DRV260X_CTRL5 0x1f > +#define DRV260X_LRA_LOOP_PERIOD 0x20 > +#define DRV260X_VBAT_MON 0x21 > +#define DRV260X_LRA_RES_PERIOD 0x22 > +#define DRV260X_MAX_REG 0x23 > + > +#define DRV260X_ALLOWED_R_BYTES 25 > +#define DRV260X_ALLOWED_W_BYTES 2 > +#define DRV260X_MAX_RW_RETRIES 5 > +#define DRV260X_I2C_RETRY_DELAY 10 > + > +#define DRV260X_GO_BIT 0x01 > + > +/* Library Selection */ > +#define DRV260X_LIB_SEL_MASK 0x07 > +#define DRV260X_LIB_SEL_RAM 0x0 > +#define DRV260X_LIB_SEL_OD 0x1 > +#define DRV260X_LIB_SEL_40_60 0x2 > +#define DRV260X_LIB_SEL_60_80 0x3 > +#define DRV260X_LIB_SEL_100_140 0x4 > +#define DRV260X_LIB_SEL_140_PLUS 0x5 > + > +#define DRV260X_LIB_SEL_HIZ_MASK 0x10 > +#define DRV260X_LIB_SEL_HIZ_EN 0x01 > +#define DRV260X_LIB_SEL_HIZ_DIS 0 > + > +/* Mode register */ > +#define DRV260X_STANDBY (1 << 6) > +#define DRV260X_STANDBY_MASK 0x40 > +#define DRV260X_INTERNAL_TRIGGER 0x00 > +#define DRV260X_EXT_TRIGGER_EDGE 0x01 > +#define DRV260X_EXT_TRIGGER_LEVEL 0x02 > +#define DRV260X_PWM_ANALOG_IN 0x03 > +#define DRV260X_AUDIOHAPTIC 0x04 > +#define DRV260X_RT_PLAYBACK 0x05 > +#define DRV260X_DIAGNOSTICS 0x06 > +#define DRV260X_AUTO_CAL 0x07 > + > +/* Audio to Haptics Control */ > +#define DRV260X_AUDIO_HAPTICS_PEAK_10MS (0 << 2) > +#define DRV260X_AUDIO_HAPTICS_PEAK_20MS (1 << 2) > +#define DRV260X_AUDIO_HAPTICS_PEAK_30MS (2 << 2) > +#define DRV260X_AUDIO_HAPTICS_PEAK_40MS (3 << 2) > + > +#define DRV260X_AUDIO_HAPTICS_FILTER_100HZ 0x00 > +#define DRV260X_AUDIO_HAPTICS_FILTER_125HZ 0x01 > +#define DRV260X_AUDIO_HAPTICS_FILTER_150HZ 0x02 > +#define DRV260X_AUDIO_HAPTICS_FILTER_200HZ 0x03 > + > +/* Min/Max Input/Output Voltages */ > +#define DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT 0x19 > +#define DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT 0x64 > +#define DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT 0x19 > +#define DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT 0xFF > + > +/* Feedback register */ > +#define DRV260X_FB_REG_ERM_MODE 0x7f > +#define DRV260X_FB_REG_LRA_MODE (1 << 7) > + > +#define DRV260X_BRAKE_FACTOR_MASK 0x1f > +#define DRV260X_BRAKE_FACTOR_2X (1 << 0) > +#define DRV260X_BRAKE_FACTOR_3X (2 << 4) > +#define DRV260X_BRAKE_FACTOR_4X (3 << 4) > +#define DRV260X_BRAKE_FACTOR_6X (4 << 4) > +#define DRV260X_BRAKE_FACTOR_8X (5 << 4) > +#define DRV260X_BRAKE_FACTOR_16 (6 << 4) > +#define DRV260X_BRAKE_FACTOR_DIS (7 << 4) > + > +#define DRV260X_LOOP_GAIN_LOW 0xf3 > +#define DRV260X_LOOP_GAIN_MED (1 << 2) > +#define DRV260X_LOOP_GAIN_HIGH (2 << 2) > +#define DRV260X_LOOP_GAIN_VERY_HIGH (3 << 2) > + > +#define DRV260X_BEMF_GAIN_0 0xfc > +#define DRV260X_BEMF_GAIN_1 (1 << 0) > +#define DRV260X_BEMF_GAIN_2 (2 << 0) > +#define DRV260X_BEMF_GAIN_3 (3 << 0) > + > +/* Control 1 register */ > +#define DRV260X_AC_CPLE_EN (1 << 5) > +#define DRV260X_STARTUP_BOOST (1 << 7) > + > +/* Control 2 register */ > + > +#define DRV260X_IDISS_TIME_45 0 > +#define DRV260X_IDISS_TIME_75 (1 << 0) > +#define DRV260X_IDISS_TIME_150 (1 << 1) > +#define DRV260X_IDISS_TIME_225 0x03 > + > +#define DRV260X_BLANK_TIME_45 (0 << 2) > +#define DRV260X_BLANK_TIME_75 (1 << 2) > +#define DRV260X_BLANK_TIME_150 (2 << 2) > +#define DRV260X_BLANK_TIME_225 (3 << 2) > + > +#define DRV260X_SAMP_TIME_150 (0 << 4) > +#define DRV260X_SAMP_TIME_200 (1 << 4) > +#define DRV260X_SAMP_TIME_250 (2 << 4) > +#define DRV260X_SAMP_TIME_300 (3 << 4) > + > +#define DRV260X_BRAKE_STABILIZER (1 << 6) > +#define DRV260X_UNIDIR_IN (0 << 7) > +#define DRV260X_BIDIR_IN (1 << 7) > + > +/* Control 3 Register */ > +#define DRV260X_LRA_OPEN_LOOP (1 << 0) > +#define DRV260X_ANANLOG_IN (1 << 1) > +#define DRV260X_LRA_DRV_MODE (1 << 2) > +#define DRV260X_RTP_UNSIGNED_DATA (1 << 3) > +#define DRV260X_SUPPLY_COMP_DIS (1 << 4) > +#define DRV260X_ERM_OPEN_LOOP (1 << 5) > +#define DRV260X_NG_THRESH_0 (0 << 6) > +#define DRV260X_NG_THRESH_2 (1 << 6) > +#define DRV260X_NG_THRESH_4 (2 << 6) > +#define DRV260X_NG_THRESH_8 (3 << 6) > + > +/* Control 4 Register */ > +#define DRV260X_AUTOCAL_TIME_150MS (0 << 4) > +#define DRV260X_AUTOCAL_TIME_250MS (1 << 4) > +#define DRV260X_AUTOCAL_TIME_500MS (2 << 4) > +#define DRV260X_AUTOCAL_TIME_1000MS (3 << 4) > + > +/** > + * 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 > +**/ > +struct drv260x_data { > + struct input_dev *input_dev; > + struct i2c_client *client; > + struct regmap *regmap; > + struct work_struct work; > + struct gpio_desc *enable_gpio; > + struct regulator *regulator; > + u32 magnitude; > + u32 mode; > + u32 library; > + int rated_voltage; > + int overdrive_voltage; > +}; > + > +static 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}, > +}; > + > +/** > + * 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 > + **/ > +#define DRV260X_DEF_RATED_VOLT 0x90 > +#define DRV260X_DEF_OD_CLAMP_VOLT 0x90 > + > +static int drv260x_calculate_voltage(int voltage) > +{ > + return (voltage * 255 / 5600); > +} > + > +static void drv260x_worker(struct work_struct *work) > +{ > + struct drv260x_data *haptics = container_of(work, struct drv260x_data, > work); > + int ret; > + > + gpiod_set_value(haptics->enable_gpio, 1); > + /* Data sheet says to wait 250us before trying to communicate */ > + udelay(250); > + > + ret = regmap_write(haptics->regmap, DRV260X_MODE, DRV260X_RT_PLAYBACK); > + if (ret != 0) { > + dev_err(&haptics->client->dev, > + "Failed to write set mode: %d\n", ret); > + return; > + } > + > + ret = regmap_write(haptics->regmap, DRV260X_RT_PB_IN, > haptics->magnitude); > + if (ret != 0) { > + dev_err(&haptics->client->dev, > + "Failed to set magnitude: %d\n", ret); > + } > +} > + > +static int drv260x_haptics_play(struct input_dev *input, void *data, > + struct ff_effect *effect) > +{ > + struct drv260x_data *haptics = input_get_drvdata(input); > + > + haptics->mode = DRV260X_LRA_NO_CAL_MODE; > + haptics->magnitude = 0; > + > + if (effect->u.rumble.strong_magnitude || > + effect->u.rumble.weak_magnitude) { > + 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; > + } > + > + schedule_work(&haptics->work); > + > + return 0; > +} > + > +static void drv260x_close(struct input_dev *input) > +{ > + struct drv260x_data *haptics = input_get_drvdata(input); > + int ret; > + > + cancel_work_sync(&haptics->work); > + > + ret = regmap_write(haptics->regmap, DRV260X_MODE, DRV260X_STANDBY); > + if (ret != 0) { > + dev_err(&haptics->client->dev, > + "Failed to write standby mode: %d\n", ret); > + } > + > + gpiod_set_value(haptics->enable_gpio, 0); > +} > + > +static const struct reg_default drv260x_lra_cal_regs[] = { > + { DRV260X_MODE, DRV260X_AUTO_CAL }, > + { DRV260X_CTRL3, DRV260X_NG_THRESH_2}, > + { DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE | > DRV260X_BRAKE_FACTOR_4X | DRV260X_LOOP_GAIN_HIGH }, > +}; > + > +static const struct reg_default drv260x_lra_init_regs[] = { > + { DRV260X_MODE, DRV260X_RT_PLAYBACK}, > + { DRV260X_A_TO_V_CTRL, DRV260X_AUDIO_HAPTICS_PEAK_20MS | > DRV260X_AUDIO_HAPTICS_FILTER_125HZ}, > + { DRV260X_A_TO_V_MIN_INPUT, DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT }, > + { DRV260X_A_TO_V_MAX_INPUT, DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT }, > + { DRV260X_A_TO_V_MIN_OUT, DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT }, > + { DRV260X_A_TO_V_MAX_OUT, DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT }, > + { DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE | > DRV260X_BRAKE_FACTOR_2X | DRV260X_LOOP_GAIN_MED | 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_CTRL4, DRV260X_AUTOCAL_TIME_500MS }, > +}; > + > +static const struct reg_default drv260x_erm_cal_regs[] = { > + { DRV260X_MODE, DRV260X_AUTO_CAL }, > + { DRV260X_A_TO_V_MIN_INPUT, DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT }, > + { DRV260X_A_TO_V_MAX_INPUT, DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT }, > + { DRV260X_A_TO_V_MIN_OUT, DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT }, > + { DRV260X_A_TO_V_MAX_OUT, DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT }, > + { DRV260X_FEEDBACK_CTRL, DRV260X_BRAKE_FACTOR_3X | > DRV260X_LOOP_GAIN_MED | DRV260X_BEMF_GAIN_2 }, > + { DRV260X_CTRL1, DRV260X_STARTUP_BOOST }, > + { DRV260X_CTRL2, DRV260X_SAMP_TIME_250 | DRV260X_BLANK_TIME_75 | > DRV260X_SAMP_TIME_250 | DRV260X_IDISS_TIME_75 }, > + { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_ERM_OPEN_LOOP }, > + { DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS }, > +}; > + > +static int drv260x_init(struct drv260x_data *haptics) > +{ > + int ret; > + unsigned int cal_buf; > + > + ret = regmap_write(haptics->regmap, > + DRV260X_RATED_VOLT, haptics->rated_voltage); > + if (ret != 0) > + goto write_failure; > + > + ret = regmap_write(haptics->regmap, > + DRV260X_OD_CLAMP_VOLT, haptics->overdrive_voltage); > + if (ret != 0) > + goto write_failure; > + > + switch(haptics->mode) { > + case DRV260X_LRA_MODE: > + ret = regmap_register_patch(haptics->regmap, > + drv260x_lra_cal_regs, > + ARRAY_SIZE(drv260x_lra_cal_regs)); > + if (ret != 0) > + goto write_failure; > + break; > + case DRV260X_ERM_MODE: > + ret = regmap_register_patch(haptics->regmap, > + drv260x_erm_cal_regs, > + ARRAY_SIZE(drv260x_erm_cal_regs)); > + if (ret != 0) > + goto write_failure; > + > + ret = regmap_update_bits(haptics->regmap, DRV260X_LIB_SEL, > + DRV260X_LIB_SEL_MASK, > + haptics->library); > + if (ret != 0) > + goto write_failure; > + break; > + default: > + ret = regmap_register_patch(haptics->regmap, > + drv260x_lra_init_regs, > + ARRAY_SIZE(drv260x_lra_init_regs)); > + if (ret != 0) > + goto write_failure; > + > + ret = regmap_update_bits(haptics->regmap, DRV260X_LIB_SEL, > + DRV260X_LIB_SEL_MASK, > + haptics->library); > + if (ret != 0) > + goto write_failure; > + > + goto skip_go_bit; > + break; > + } > + > + if (ret != 0) { > + dev_err(&haptics->client->dev, > + "Failed to write init registers: %d\n", > + ret); > + goto write_failure; > + } > + > + ret = regmap_write(haptics->regmap, DRV260X_GO, DRV260X_GO_BIT); > + if (ret != 0) > + goto write_failure; > + > + do { > + ret = regmap_read(haptics->regmap, DRV260X_GO, &cal_buf); > + if (ret != 0) > + goto write_failure; > + } while (cal_buf == DRV260X_GO_BIT || ret != 0); > + > + return ret; > + > +write_failure: > + dev_err(&haptics->client->dev, > + "Failed to write init registers: %d\n", > + ret); > +skip_go_bit: > + return ret; > +} > + > +static const struct regmap_config drv260x_regmap_config = { > + .reg_bits = 8, > + .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, > +}; > + > +#ifdef CONFIG_OF > +static int drv260x_parse_dt(struct device_node *dev_node, > + struct drv260x_data *haptics, > + struct device *dev) > +{ > + int ret; > + int voltage; > + > + ret = of_property_read_u32(dev_node, "mode", &haptics->mode); > + if (ret < 0) { > + dev_err(dev, "%s: No entry for mode\n", __func__); > + > + return ret; > + } > + ret = of_property_read_u32(dev_node, "library-sel", > + &haptics->library); > + if (ret < 0) { > + dev_err(dev, "%s: No entry for library selection\n", > + __func__); > + > + return ret; > + } > + ret = of_property_read_u32(dev_node, "vib-rated-voltage", > + &voltage); > + if (!ret) > + haptics->rated_voltage = drv260x_calculate_voltage(voltage); > + > + > + ret = of_property_read_u32(dev_node, "vib-overdrive-voltage", > + &voltage); > + if (!ret) > + haptics->overdrive_voltage = drv260x_calculate_voltage(voltage); > + > + return ret; > + > +} > +#else > +static inline int drv260x_parse_dt(struct device *dev) > +{ > + dev_err(dev, "no platform data defined\n"); > + > + return -EINVAL; > +} > +#endif > +static int drv260x_probe(struct i2c_client *client, > + const struct i2c_device_id *id) > +{ > + struct drv260x_data *haptics; > + struct device_node *np = client->dev.of_node; > + struct drv260x_platform_data *pdata = dev_get_platdata(&client->dev); > + int ret; > + > + haptics = devm_kzalloc(&client->dev, sizeof(*haptics), GFP_KERNEL); > + if (!haptics) > + return -ENOMEM; > + > + haptics->rated_voltage = DRV260X_DEF_OD_CLAMP_VOLT; > + haptics->rated_voltage = DRV260X_DEF_RATED_VOLT; > + > + if (pdata) { > + haptics->mode = pdata->mode; > + haptics->library = pdata->library_selection; > + if (pdata->vib_overdrive_voltage) > + haptics->overdrive_voltage = > drv260x_calculate_voltage(pdata->vib_overdrive_voltage); > + if (pdata->vib_rated_voltage) > + haptics->rated_voltage = > drv260x_calculate_voltage(pdata->vib_rated_voltage); > + } else if (np) { > + ret = drv260x_parse_dt(np, haptics, &client->dev); > + if (ret) > + return ret; > + } else { > + dev_err(&client->dev, "Platform data not set\n"); > + return -ENODEV; > + } > + > + > + if (haptics->mode < DRV260X_LRA_MODE || > + haptics->mode > DRV260X_ERM_MODE) { > + dev_err(&client->dev, > + "Vibrator mode is invalid: %i\n", > + haptics->mode); > + return -EINVAL; > + } > + > + if (haptics->library < DRV260X_LIB_SEL_DEFAULT || > + haptics->library > DRV260X_LIB_F) { > + dev_err(&client->dev, > + "Library value is invalid: %i\n", haptics->library); > + return -EINVAL; > + } > + > + haptics->regulator = devm_regulator_get(&client->dev, "vbat"); > + if (IS_ERR(haptics->regulator)) { > + ret = PTR_ERR(haptics->regulator); > + dev_err(&client->dev, > + "unable to get regulator, error: %d\n", ret); > + return ret; > + } > + > + haptics->enable_gpio = devm_gpiod_get(&client->dev, "enable"); > + if (IS_ERR(haptics->enable_gpio)) { > + ret = PTR_ERR(haptics->enable_gpio); > + if (ret != -ENOENT && ret != -ENOSYS) > + return ret; > + haptics->enable_gpio = NULL; > + } else { > + gpiod_direction_output(haptics->enable_gpio, 1); > + } > + > + haptics->input_dev = devm_input_allocate_device(&client->dev); > + if (haptics->input_dev == NULL) { > + dev_err(&client->dev, "Failed to allocate input device\n"); > + ret = -ENOMEM; > + return ret; > + } > + > + haptics->input_dev->name = "drv260x:haptics"; > + haptics->input_dev->dev.parent = client->dev.parent; > + haptics->input_dev->close = drv260x_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, > + drv260x_haptics_play); > + if (ret < 0) { > + dev_err(&client->dev, "input_ff_create() failed: %d\n", > + ret); > + return ret; > + } > + > + INIT_WORK(&haptics->work, drv260x_worker); > + > + haptics->client = client; > + i2c_set_clientdata(client, haptics); > + > + haptics->regmap = devm_regmap_init_i2c(client, &drv260x_regmap_config); > + if (IS_ERR(haptics->regmap)) { > + ret = PTR_ERR(haptics->regmap); > + dev_err(&client->dev, "Failed to allocate register map: %d\n", > + ret); > + return ret; > + } > + > + ret = drv260x_init(haptics); > + if (ret < 0) { > + dev_err(&client->dev, "Device init failed: %d\n", ret); > + return ret; > + } > + > + ret = input_register_device(haptics->input_dev); > + if (ret < 0) { > + dev_err(&client->dev, "couldn't register input device: %d\n", > + ret); > + return ret; > + } > + return 0; > +} > + > +#ifdef CONFIG_PM_SLEEP > +static int drv260x_suspend(struct device *dev) > +{ > + struct drv260x_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, > + DRV260X_MODE, > + DRV260X_STANDBY_MASK, > + DRV260X_STANDBY); > + if (ret) { > + dev_err(dev, "Failed to set standby mode\n"); > + goto out; > + } > + > + gpiod_set_value(haptics->enable_gpio, 0); > + > + ret = regulator_disable(haptics->regulator); > + if (ret) > + dev_err(dev, "Failed to disable regulator\n"); > + } > +out: > + mutex_unlock(&haptics->input_dev->mutex); > + return ret; > +} > + > +static int drv260x_resume(struct device *dev) > +{ > + struct drv260x_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, > + DRV260X_MODE, > + DRV260X_STANDBY_MASK, 0); > + if (ret) { > + dev_err(dev, "Failed to unset standby mode\n"); > + goto out; > + } > + > + gpiod_set_value(haptics->enable_gpio, 1); > + } > + > +out: > + mutex_unlock(&haptics->input_dev->mutex); > + return ret; > +} > +#endif > + > +static SIMPLE_DEV_PM_OPS(drv260x_pm_ops, drv260x_suspend, drv260x_resume); > + > +static const struct i2c_device_id drv260x_id[] = { > + { "drv2605l", 0 }, > + { } > +}; > +MODULE_DEVICE_TABLE(i2c, drv260x_id); > + > +#if IS_ENABLED(CONFIG_OF) > +static const struct of_device_id drv260x_of_match[] = { > + { .compatible = "ti,drv2604", }, > + { .compatible = "ti,drv2604l", }, > + { .compatible = "ti,drv2605", }, > + { .compatible = "ti,drv2605l", }, > + {} > +}; > +MODULE_DEVICE_TABLE(of, drv260x_of_match); > +#endif > + > +static struct i2c_driver drv260x_driver = { > + .probe = drv260x_probe, > + .driver = { > + .name = "drv260x-haptics", > + .owner = THIS_MODULE, > + .of_match_table = of_match_ptr(drv260x_of_match), > + .pm = &drv260x_pm_ops, > + }, > + .id_table = drv260x_id, > +}; > +module_i2c_driver(drv260x_driver); > + > +MODULE_ALIAS("platform:drv260x-haptics"); > +MODULE_DESCRIPTION("TI DRV260x haptics driver"); > +MODULE_LICENSE("GPL"); > +MODULE_AUTHOR("Dan Murphy <dmur...@ti.com>"); > diff --git a/include/dt-bindings/input/ti-drv260x.h > b/include/dt-bindings/input/ti-drv260x.h > new file mode 100644 > index 0000000..be7f245 > --- /dev/null > +++ b/include/dt-bindings/input/ti-drv260x.h > @@ -0,0 +1,35 @@ > +/* > + * DRV260X 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. > + */ > + > +#ifndef _DT_BINDINGS_TI_DRV260X_H > +#define _DT_BINDINGS_TI_DRV260X_H > + > +/* Calibration Types */ > +#define DRV260X_LRA_MODE 0x00 > +#define DRV260X_LRA_NO_CAL_MODE 0x01 > +#define DRV260X_ERM_MODE 0x02 > + > +/* Library Selection */ > +#define DRV260X_LIB_SEL_DEFAULT 0x00 > +#define DRV260X_LIB_A 0x01 > +#define DRV260X_LIB_B 0x02 > +#define DRV260X_LIB_C 0x03 > +#define DRV260X_LIB_D 0x04 > +#define DRV260X_LIB_E 0x05 > +#define DRV260X_LIB_F 0x06 > + > +#endif > diff --git a/include/linux/platform_data/drv260x-pdata.h > b/include/linux/platform_data/drv260x-pdata.h > new file mode 100644 > index 0000000..4091a9b > --- /dev/null > +++ b/include/linux/platform_data/drv260x-pdata.h > @@ -0,0 +1,29 @@ > +/* > + * Platform data for DRV260X 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. > + */ > + > +#ifndef _LINUX_DRV260X_PDATA_H > +#define _LINUX_DRV260X_PDATA_H > + > +struct drv260x_platform_data { > + int enable_gpio; > + u32 library_selection; > + u32 mode; > + u32 vib_rated_voltage; > + u32 vib_overdrive_voltage; > +}; > + > +#endif >
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