On Wed, Aug 06, 2014 at 07:47:25PM +0000, Murphy, Dan wrote: > 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 <dmurphy@xxxxxx> > > --- > > > > 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 Mark, are you OK with this new updated binding? > > 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 <dmurphy@xxxxxx> > > + * > > + * 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 <dmurphy@xxxxxx>"); > > 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 <dmurphy@xxxxxx> > > + * > > + * 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 <dmurphy@xxxxxx> > > + * > > + * 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 > > > > > -- > ------------------ > Dan Murphy -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
