On 08/07/2014 01:16 AM, Dmitry Torokhov wrote: > 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 <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 > > Mark, are you OK with this new updated binding? >
Mark? >>> 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 >>> >> >> >> -- >> ------------------ >> Dan Murphy > -- ------------------ Dan Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
