11802d0beSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
27132fe4fSDan Murphy /*
37132fe4fSDan Murphy * DRV260X haptics driver family
47132fe4fSDan Murphy *
57132fe4fSDan Murphy * Author: Dan Murphy <dmurphy@ti.com>
67132fe4fSDan Murphy *
77132fe4fSDan Murphy * Copyright: (C) 2014 Texas Instruments, Inc.
87132fe4fSDan Murphy */
97132fe4fSDan Murphy
107132fe4fSDan Murphy #include <linux/i2c.h>
117132fe4fSDan Murphy #include <linux/input.h>
127132fe4fSDan Murphy #include <linux/module.h>
137132fe4fSDan Murphy #include <linux/regmap.h>
147132fe4fSDan Murphy #include <linux/slab.h>
157132fe4fSDan Murphy #include <linux/delay.h>
167132fe4fSDan Murphy #include <linux/gpio/consumer.h>
177132fe4fSDan Murphy #include <linux/regulator/consumer.h>
187132fe4fSDan Murphy
197132fe4fSDan Murphy #include <dt-bindings/input/ti-drv260x.h>
207132fe4fSDan Murphy
217132fe4fSDan Murphy #define DRV260X_STATUS 0x0
227132fe4fSDan Murphy #define DRV260X_MODE 0x1
237132fe4fSDan Murphy #define DRV260X_RT_PB_IN 0x2
247132fe4fSDan Murphy #define DRV260X_LIB_SEL 0x3
257132fe4fSDan Murphy #define DRV260X_WV_SEQ_1 0x4
267132fe4fSDan Murphy #define DRV260X_WV_SEQ_2 0x5
277132fe4fSDan Murphy #define DRV260X_WV_SEQ_3 0x6
287132fe4fSDan Murphy #define DRV260X_WV_SEQ_4 0x7
297132fe4fSDan Murphy #define DRV260X_WV_SEQ_5 0x8
307132fe4fSDan Murphy #define DRV260X_WV_SEQ_6 0x9
317132fe4fSDan Murphy #define DRV260X_WV_SEQ_7 0xa
327132fe4fSDan Murphy #define DRV260X_WV_SEQ_8 0xb
337132fe4fSDan Murphy #define DRV260X_GO 0xc
347132fe4fSDan Murphy #define DRV260X_OVERDRIVE_OFF 0xd
357132fe4fSDan Murphy #define DRV260X_SUSTAIN_P_OFF 0xe
367132fe4fSDan Murphy #define DRV260X_SUSTAIN_N_OFF 0xf
377132fe4fSDan Murphy #define DRV260X_BRAKE_OFF 0x10
387132fe4fSDan Murphy #define DRV260X_A_TO_V_CTRL 0x11
397132fe4fSDan Murphy #define DRV260X_A_TO_V_MIN_INPUT 0x12
407132fe4fSDan Murphy #define DRV260X_A_TO_V_MAX_INPUT 0x13
417132fe4fSDan Murphy #define DRV260X_A_TO_V_MIN_OUT 0x14
427132fe4fSDan Murphy #define DRV260X_A_TO_V_MAX_OUT 0x15
437132fe4fSDan Murphy #define DRV260X_RATED_VOLT 0x16
447132fe4fSDan Murphy #define DRV260X_OD_CLAMP_VOLT 0x17
457132fe4fSDan Murphy #define DRV260X_CAL_COMP 0x18
467132fe4fSDan Murphy #define DRV260X_CAL_BACK_EMF 0x19
477132fe4fSDan Murphy #define DRV260X_FEEDBACK_CTRL 0x1a
487132fe4fSDan Murphy #define DRV260X_CTRL1 0x1b
497132fe4fSDan Murphy #define DRV260X_CTRL2 0x1c
507132fe4fSDan Murphy #define DRV260X_CTRL3 0x1d
517132fe4fSDan Murphy #define DRV260X_CTRL4 0x1e
527132fe4fSDan Murphy #define DRV260X_CTRL5 0x1f
537132fe4fSDan Murphy #define DRV260X_LRA_LOOP_PERIOD 0x20
547132fe4fSDan Murphy #define DRV260X_VBAT_MON 0x21
557132fe4fSDan Murphy #define DRV260X_LRA_RES_PERIOD 0x22
567132fe4fSDan Murphy #define DRV260X_MAX_REG 0x23
577132fe4fSDan Murphy
587132fe4fSDan Murphy #define DRV260X_GO_BIT 0x01
597132fe4fSDan Murphy
607132fe4fSDan Murphy /* Library Selection */
617132fe4fSDan Murphy #define DRV260X_LIB_SEL_MASK 0x07
627132fe4fSDan Murphy #define DRV260X_LIB_SEL_RAM 0x0
637132fe4fSDan Murphy #define DRV260X_LIB_SEL_OD 0x1
647132fe4fSDan Murphy #define DRV260X_LIB_SEL_40_60 0x2
657132fe4fSDan Murphy #define DRV260X_LIB_SEL_60_80 0x3
667132fe4fSDan Murphy #define DRV260X_LIB_SEL_100_140 0x4
677132fe4fSDan Murphy #define DRV260X_LIB_SEL_140_PLUS 0x5
687132fe4fSDan Murphy
697132fe4fSDan Murphy #define DRV260X_LIB_SEL_HIZ_MASK 0x10
707132fe4fSDan Murphy #define DRV260X_LIB_SEL_HIZ_EN 0x01
717132fe4fSDan Murphy #define DRV260X_LIB_SEL_HIZ_DIS 0
727132fe4fSDan Murphy
737132fe4fSDan Murphy /* Mode register */
747132fe4fSDan Murphy #define DRV260X_STANDBY (1 << 6)
757132fe4fSDan Murphy #define DRV260X_STANDBY_MASK 0x40
767132fe4fSDan Murphy #define DRV260X_INTERNAL_TRIGGER 0x00
777132fe4fSDan Murphy #define DRV260X_EXT_TRIGGER_EDGE 0x01
787132fe4fSDan Murphy #define DRV260X_EXT_TRIGGER_LEVEL 0x02
797132fe4fSDan Murphy #define DRV260X_PWM_ANALOG_IN 0x03
807132fe4fSDan Murphy #define DRV260X_AUDIOHAPTIC 0x04
817132fe4fSDan Murphy #define DRV260X_RT_PLAYBACK 0x05
827132fe4fSDan Murphy #define DRV260X_DIAGNOSTICS 0x06
837132fe4fSDan Murphy #define DRV260X_AUTO_CAL 0x07
847132fe4fSDan Murphy
857132fe4fSDan Murphy /* Audio to Haptics Control */
867132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_PEAK_10MS (0 << 2)
877132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_PEAK_20MS (1 << 2)
887132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_PEAK_30MS (2 << 2)
897132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_PEAK_40MS (3 << 2)
907132fe4fSDan Murphy
917132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_FILTER_100HZ 0x00
927132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_FILTER_125HZ 0x01
937132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_FILTER_150HZ 0x02
947132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_FILTER_200HZ 0x03
957132fe4fSDan Murphy
967132fe4fSDan Murphy /* Min/Max Input/Output Voltages */
977132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT 0x19
987132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT 0x64
997132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT 0x19
1007132fe4fSDan Murphy #define DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT 0xFF
1017132fe4fSDan Murphy
1027132fe4fSDan Murphy /* Feedback register */
1037132fe4fSDan Murphy #define DRV260X_FB_REG_ERM_MODE 0x7f
1047132fe4fSDan Murphy #define DRV260X_FB_REG_LRA_MODE (1 << 7)
1057132fe4fSDan Murphy
1067132fe4fSDan Murphy #define DRV260X_BRAKE_FACTOR_MASK 0x1f
1077132fe4fSDan Murphy #define DRV260X_BRAKE_FACTOR_2X (1 << 0)
1087132fe4fSDan Murphy #define DRV260X_BRAKE_FACTOR_3X (2 << 4)
1097132fe4fSDan Murphy #define DRV260X_BRAKE_FACTOR_4X (3 << 4)
1107132fe4fSDan Murphy #define DRV260X_BRAKE_FACTOR_6X (4 << 4)
1117132fe4fSDan Murphy #define DRV260X_BRAKE_FACTOR_8X (5 << 4)
1127132fe4fSDan Murphy #define DRV260X_BRAKE_FACTOR_16 (6 << 4)
1137132fe4fSDan Murphy #define DRV260X_BRAKE_FACTOR_DIS (7 << 4)
1147132fe4fSDan Murphy
1157132fe4fSDan Murphy #define DRV260X_LOOP_GAIN_LOW 0xf3
1167132fe4fSDan Murphy #define DRV260X_LOOP_GAIN_MED (1 << 2)
1177132fe4fSDan Murphy #define DRV260X_LOOP_GAIN_HIGH (2 << 2)
1187132fe4fSDan Murphy #define DRV260X_LOOP_GAIN_VERY_HIGH (3 << 2)
1197132fe4fSDan Murphy
1207132fe4fSDan Murphy #define DRV260X_BEMF_GAIN_0 0xfc
1217132fe4fSDan Murphy #define DRV260X_BEMF_GAIN_1 (1 << 0)
1227132fe4fSDan Murphy #define DRV260X_BEMF_GAIN_2 (2 << 0)
1237132fe4fSDan Murphy #define DRV260X_BEMF_GAIN_3 (3 << 0)
1247132fe4fSDan Murphy
1257132fe4fSDan Murphy /* Control 1 register */
1267132fe4fSDan Murphy #define DRV260X_AC_CPLE_EN (1 << 5)
1277132fe4fSDan Murphy #define DRV260X_STARTUP_BOOST (1 << 7)
1287132fe4fSDan Murphy
1297132fe4fSDan Murphy /* Control 2 register */
1307132fe4fSDan Murphy
1317132fe4fSDan Murphy #define DRV260X_IDISS_TIME_45 0
1327132fe4fSDan Murphy #define DRV260X_IDISS_TIME_75 (1 << 0)
1337132fe4fSDan Murphy #define DRV260X_IDISS_TIME_150 (1 << 1)
1347132fe4fSDan Murphy #define DRV260X_IDISS_TIME_225 0x03
1357132fe4fSDan Murphy
1367132fe4fSDan Murphy #define DRV260X_BLANK_TIME_45 (0 << 2)
1377132fe4fSDan Murphy #define DRV260X_BLANK_TIME_75 (1 << 2)
1387132fe4fSDan Murphy #define DRV260X_BLANK_TIME_150 (2 << 2)
1397132fe4fSDan Murphy #define DRV260X_BLANK_TIME_225 (3 << 2)
1407132fe4fSDan Murphy
1417132fe4fSDan Murphy #define DRV260X_SAMP_TIME_150 (0 << 4)
1427132fe4fSDan Murphy #define DRV260X_SAMP_TIME_200 (1 << 4)
1437132fe4fSDan Murphy #define DRV260X_SAMP_TIME_250 (2 << 4)
1447132fe4fSDan Murphy #define DRV260X_SAMP_TIME_300 (3 << 4)
1457132fe4fSDan Murphy
1467132fe4fSDan Murphy #define DRV260X_BRAKE_STABILIZER (1 << 6)
1477132fe4fSDan Murphy #define DRV260X_UNIDIR_IN (0 << 7)
1487132fe4fSDan Murphy #define DRV260X_BIDIR_IN (1 << 7)
1497132fe4fSDan Murphy
1507132fe4fSDan Murphy /* Control 3 Register */
1517132fe4fSDan Murphy #define DRV260X_LRA_OPEN_LOOP (1 << 0)
152116721a5SLuca Weiss #define DRV260X_ANALOG_IN (1 << 1)
1537132fe4fSDan Murphy #define DRV260X_LRA_DRV_MODE (1 << 2)
1547132fe4fSDan Murphy #define DRV260X_RTP_UNSIGNED_DATA (1 << 3)
1557132fe4fSDan Murphy #define DRV260X_SUPPLY_COMP_DIS (1 << 4)
1567132fe4fSDan Murphy #define DRV260X_ERM_OPEN_LOOP (1 << 5)
1577132fe4fSDan Murphy #define DRV260X_NG_THRESH_0 (0 << 6)
1587132fe4fSDan Murphy #define DRV260X_NG_THRESH_2 (1 << 6)
1597132fe4fSDan Murphy #define DRV260X_NG_THRESH_4 (2 << 6)
1607132fe4fSDan Murphy #define DRV260X_NG_THRESH_8 (3 << 6)
1617132fe4fSDan Murphy
1627132fe4fSDan Murphy /* Control 4 Register */
1637132fe4fSDan Murphy #define DRV260X_AUTOCAL_TIME_150MS (0 << 4)
1647132fe4fSDan Murphy #define DRV260X_AUTOCAL_TIME_250MS (1 << 4)
1657132fe4fSDan Murphy #define DRV260X_AUTOCAL_TIME_500MS (2 << 4)
1667132fe4fSDan Murphy #define DRV260X_AUTOCAL_TIME_1000MS (3 << 4)
1677132fe4fSDan Murphy
1687132fe4fSDan Murphy /**
1697132fe4fSDan Murphy * struct drv260x_data -
170463a74c2SLee Jones * @input_dev: Pointer to the input device
171463a74c2SLee Jones * @client: Pointer to the I2C client
172463a74c2SLee Jones * @regmap: Register map of the device
173463a74c2SLee Jones * @work: Work item used to off load the enable/disable of the vibration
174463a74c2SLee Jones * @enable_gpio: Pointer to the gpio used for enable/disabling
175463a74c2SLee Jones * @regulator: Pointer to the regulator for the IC
176463a74c2SLee Jones * @magnitude: Magnitude of the vibration event
177463a74c2SLee Jones * @mode: The operating mode of the IC (LRA_NO_CAL, ERM or LRA)
178463a74c2SLee Jones * @library: The vibration library to be used
179463a74c2SLee Jones * @rated_voltage: The rated_voltage of the actuator
180463a74c2SLee Jones * @overdrive_voltage: The over drive voltage of the actuator
1817132fe4fSDan Murphy **/
1827132fe4fSDan Murphy struct drv260x_data {
1837132fe4fSDan Murphy struct input_dev *input_dev;
1847132fe4fSDan Murphy struct i2c_client *client;
1857132fe4fSDan Murphy struct regmap *regmap;
1867132fe4fSDan Murphy struct work_struct work;
1877132fe4fSDan Murphy struct gpio_desc *enable_gpio;
1887132fe4fSDan Murphy struct regulator *regulator;
189d09dbc7aSLuca Weiss u8 magnitude;
1907132fe4fSDan Murphy u32 mode;
1917132fe4fSDan Murphy u32 library;
1927132fe4fSDan Murphy int rated_voltage;
1937132fe4fSDan Murphy int overdrive_voltage;
1947132fe4fSDan Murphy };
1957132fe4fSDan Murphy
1967132fe4fSDan Murphy #define DRV260X_DEF_RATED_VOLT 0x90
1977132fe4fSDan Murphy #define DRV260X_DEF_OD_CLAMP_VOLT 0x90
1987132fe4fSDan Murphy
199463a74c2SLee Jones /*
2007132fe4fSDan Murphy * Rated and Overdriver Voltages:
2017132fe4fSDan Murphy * Calculated using the formula r = v * 255 / 5.6
2027132fe4fSDan Murphy * where r is what will be written to the register
2037132fe4fSDan Murphy * and v is the rated or overdriver voltage of the actuator
204463a74c2SLee Jones */
drv260x_calculate_voltage(unsigned int voltage)2057132fe4fSDan Murphy static int drv260x_calculate_voltage(unsigned int voltage)
2067132fe4fSDan Murphy {
2077132fe4fSDan Murphy return (voltage * 255 / 5600);
2087132fe4fSDan Murphy }
2097132fe4fSDan Murphy
drv260x_worker(struct work_struct * work)2107132fe4fSDan Murphy static void drv260x_worker(struct work_struct *work)
2117132fe4fSDan Murphy {
2127132fe4fSDan Murphy struct drv260x_data *haptics = container_of(work, struct drv260x_data, work);
2137132fe4fSDan Murphy int error;
2147132fe4fSDan Murphy
2157132fe4fSDan Murphy gpiod_set_value(haptics->enable_gpio, 1);
2167132fe4fSDan Murphy /* Data sheet says to wait 250us before trying to communicate */
2177132fe4fSDan Murphy udelay(250);
2187132fe4fSDan Murphy
2197132fe4fSDan Murphy error = regmap_write(haptics->regmap,
2207132fe4fSDan Murphy DRV260X_MODE, DRV260X_RT_PLAYBACK);
2217132fe4fSDan Murphy if (error) {
2227132fe4fSDan Murphy dev_err(&haptics->client->dev,
2237132fe4fSDan Murphy "Failed to write set mode: %d\n", error);
2247132fe4fSDan Murphy } else {
2257132fe4fSDan Murphy error = regmap_write(haptics->regmap,
2267132fe4fSDan Murphy DRV260X_RT_PB_IN, haptics->magnitude);
2277132fe4fSDan Murphy if (error)
2287132fe4fSDan Murphy dev_err(&haptics->client->dev,
2297132fe4fSDan Murphy "Failed to set magnitude: %d\n", error);
2307132fe4fSDan Murphy }
2317132fe4fSDan Murphy }
2327132fe4fSDan Murphy
drv260x_haptics_play(struct input_dev * input,void * data,struct ff_effect * effect)2337132fe4fSDan Murphy static int drv260x_haptics_play(struct input_dev *input, void *data,
2347132fe4fSDan Murphy struct ff_effect *effect)
2357132fe4fSDan Murphy {
2367132fe4fSDan Murphy struct drv260x_data *haptics = input_get_drvdata(input);
2377132fe4fSDan Murphy
2387132fe4fSDan Murphy haptics->mode = DRV260X_LRA_NO_CAL_MODE;
2397132fe4fSDan Murphy
240d09dbc7aSLuca Weiss /* Scale u16 magnitude into u8 register value */
2417132fe4fSDan Murphy if (effect->u.rumble.strong_magnitude > 0)
242d09dbc7aSLuca Weiss haptics->magnitude = effect->u.rumble.strong_magnitude >> 8;
2437132fe4fSDan Murphy else if (effect->u.rumble.weak_magnitude > 0)
244d09dbc7aSLuca Weiss haptics->magnitude = effect->u.rumble.weak_magnitude >> 8;
2457132fe4fSDan Murphy else
2467132fe4fSDan Murphy haptics->magnitude = 0;
2477132fe4fSDan Murphy
2487132fe4fSDan Murphy schedule_work(&haptics->work);
2497132fe4fSDan Murphy
2507132fe4fSDan Murphy return 0;
2517132fe4fSDan Murphy }
2527132fe4fSDan Murphy
drv260x_close(struct input_dev * input)2537132fe4fSDan Murphy static void drv260x_close(struct input_dev *input)
2547132fe4fSDan Murphy {
2557132fe4fSDan Murphy struct drv260x_data *haptics = input_get_drvdata(input);
2567132fe4fSDan Murphy int error;
2577132fe4fSDan Murphy
2587132fe4fSDan Murphy cancel_work_sync(&haptics->work);
2597132fe4fSDan Murphy
2607132fe4fSDan Murphy error = regmap_write(haptics->regmap, DRV260X_MODE, DRV260X_STANDBY);
2617132fe4fSDan Murphy if (error)
2627132fe4fSDan Murphy dev_err(&haptics->client->dev,
2637132fe4fSDan Murphy "Failed to enter standby mode: %d\n", error);
2647132fe4fSDan Murphy
2657132fe4fSDan Murphy gpiod_set_value(haptics->enable_gpio, 0);
2667132fe4fSDan Murphy }
2677132fe4fSDan Murphy
2688019ff6cSNariman Poushin static const struct reg_sequence drv260x_lra_cal_regs[] = {
2697132fe4fSDan Murphy { DRV260X_MODE, DRV260X_AUTO_CAL },
270d09dbc7aSLuca Weiss { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_RTP_UNSIGNED_DATA },
2717132fe4fSDan Murphy { DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE |
2727132fe4fSDan Murphy DRV260X_BRAKE_FACTOR_4X | DRV260X_LOOP_GAIN_HIGH },
2737132fe4fSDan Murphy };
2747132fe4fSDan Murphy
2758019ff6cSNariman Poushin static const struct reg_sequence drv260x_lra_init_regs[] = {
2767132fe4fSDan Murphy { DRV260X_MODE, DRV260X_RT_PLAYBACK },
2777132fe4fSDan Murphy { DRV260X_A_TO_V_CTRL, DRV260X_AUDIO_HAPTICS_PEAK_20MS |
2787132fe4fSDan Murphy DRV260X_AUDIO_HAPTICS_FILTER_125HZ },
2797132fe4fSDan Murphy { DRV260X_A_TO_V_MIN_INPUT, DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT },
2807132fe4fSDan Murphy { DRV260X_A_TO_V_MAX_INPUT, DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT },
2817132fe4fSDan Murphy { DRV260X_A_TO_V_MIN_OUT, DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT },
2827132fe4fSDan Murphy { DRV260X_A_TO_V_MAX_OUT, DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT },
2837132fe4fSDan Murphy { DRV260X_FEEDBACK_CTRL, DRV260X_FB_REG_LRA_MODE |
2847132fe4fSDan Murphy DRV260X_BRAKE_FACTOR_2X | DRV260X_LOOP_GAIN_MED |
2857132fe4fSDan Murphy DRV260X_BEMF_GAIN_3 },
2867132fe4fSDan Murphy { DRV260X_CTRL1, DRV260X_STARTUP_BOOST },
2877132fe4fSDan Murphy { DRV260X_CTRL2, DRV260X_SAMP_TIME_250 },
288d09dbc7aSLuca Weiss { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_RTP_UNSIGNED_DATA | DRV260X_ANALOG_IN },
2897132fe4fSDan Murphy { DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS },
2907132fe4fSDan Murphy };
2917132fe4fSDan Murphy
2928019ff6cSNariman Poushin static const struct reg_sequence drv260x_erm_cal_regs[] = {
2937132fe4fSDan Murphy { DRV260X_MODE, DRV260X_AUTO_CAL },
2947132fe4fSDan Murphy { DRV260X_A_TO_V_MIN_INPUT, DRV260X_AUDIO_HAPTICS_MIN_IN_VOLT },
2957132fe4fSDan Murphy { DRV260X_A_TO_V_MAX_INPUT, DRV260X_AUDIO_HAPTICS_MAX_IN_VOLT },
2967132fe4fSDan Murphy { DRV260X_A_TO_V_MIN_OUT, DRV260X_AUDIO_HAPTICS_MIN_OUT_VOLT },
2977132fe4fSDan Murphy { DRV260X_A_TO_V_MAX_OUT, DRV260X_AUDIO_HAPTICS_MAX_OUT_VOLT },
2987132fe4fSDan Murphy { DRV260X_FEEDBACK_CTRL, DRV260X_BRAKE_FACTOR_3X |
2997132fe4fSDan Murphy DRV260X_LOOP_GAIN_MED | DRV260X_BEMF_GAIN_2 },
3007132fe4fSDan Murphy { DRV260X_CTRL1, DRV260X_STARTUP_BOOST },
3017132fe4fSDan Murphy { DRV260X_CTRL2, DRV260X_SAMP_TIME_250 | DRV260X_BLANK_TIME_75 |
3027132fe4fSDan Murphy DRV260X_IDISS_TIME_75 },
303d09dbc7aSLuca Weiss { DRV260X_CTRL3, DRV260X_NG_THRESH_2 | DRV260X_RTP_UNSIGNED_DATA },
3047132fe4fSDan Murphy { DRV260X_CTRL4, DRV260X_AUTOCAL_TIME_500MS },
3057132fe4fSDan Murphy };
3067132fe4fSDan Murphy
drv260x_init(struct drv260x_data * haptics)3077132fe4fSDan Murphy static int drv260x_init(struct drv260x_data *haptics)
3087132fe4fSDan Murphy {
3097132fe4fSDan Murphy int error;
3107132fe4fSDan Murphy unsigned int cal_buf;
3117132fe4fSDan Murphy
3127132fe4fSDan Murphy error = regmap_write(haptics->regmap,
3137132fe4fSDan Murphy DRV260X_RATED_VOLT, haptics->rated_voltage);
3147132fe4fSDan Murphy if (error) {
3157132fe4fSDan Murphy dev_err(&haptics->client->dev,
3167132fe4fSDan Murphy "Failed to write DRV260X_RATED_VOLT register: %d\n",
3177132fe4fSDan Murphy error);
3187132fe4fSDan Murphy return error;
3197132fe4fSDan Murphy }
3207132fe4fSDan Murphy
3217132fe4fSDan Murphy error = regmap_write(haptics->regmap,
3227132fe4fSDan Murphy DRV260X_OD_CLAMP_VOLT, haptics->overdrive_voltage);
3237132fe4fSDan Murphy if (error) {
3247132fe4fSDan Murphy dev_err(&haptics->client->dev,
3257132fe4fSDan Murphy "Failed to write DRV260X_OD_CLAMP_VOLT register: %d\n",
3267132fe4fSDan Murphy error);
3277132fe4fSDan Murphy return error;
3287132fe4fSDan Murphy }
3297132fe4fSDan Murphy
3307132fe4fSDan Murphy switch (haptics->mode) {
3317132fe4fSDan Murphy case DRV260X_LRA_MODE:
3327132fe4fSDan Murphy error = regmap_register_patch(haptics->regmap,
3337132fe4fSDan Murphy drv260x_lra_cal_regs,
3347132fe4fSDan Murphy ARRAY_SIZE(drv260x_lra_cal_regs));
3357132fe4fSDan Murphy if (error) {
3367132fe4fSDan Murphy dev_err(&haptics->client->dev,
3377132fe4fSDan Murphy "Failed to write LRA calibration registers: %d\n",
3387132fe4fSDan Murphy error);
3397132fe4fSDan Murphy return error;
3407132fe4fSDan Murphy }
3417132fe4fSDan Murphy
3427132fe4fSDan Murphy break;
3437132fe4fSDan Murphy
3447132fe4fSDan Murphy case DRV260X_ERM_MODE:
3457132fe4fSDan Murphy error = regmap_register_patch(haptics->regmap,
3467132fe4fSDan Murphy drv260x_erm_cal_regs,
3477132fe4fSDan Murphy ARRAY_SIZE(drv260x_erm_cal_regs));
3487132fe4fSDan Murphy if (error) {
3497132fe4fSDan Murphy dev_err(&haptics->client->dev,
3507132fe4fSDan Murphy "Failed to write ERM calibration registers: %d\n",
3517132fe4fSDan Murphy error);
3527132fe4fSDan Murphy return error;
3537132fe4fSDan Murphy }
3547132fe4fSDan Murphy
3557132fe4fSDan Murphy error = regmap_update_bits(haptics->regmap, DRV260X_LIB_SEL,
3567132fe4fSDan Murphy DRV260X_LIB_SEL_MASK,
3577132fe4fSDan Murphy haptics->library);
3587132fe4fSDan Murphy if (error) {
3597132fe4fSDan Murphy dev_err(&haptics->client->dev,
3607132fe4fSDan Murphy "Failed to write DRV260X_LIB_SEL register: %d\n",
3617132fe4fSDan Murphy error);
3627132fe4fSDan Murphy return error;
3637132fe4fSDan Murphy }
3647132fe4fSDan Murphy
3657132fe4fSDan Murphy break;
3667132fe4fSDan Murphy
3677132fe4fSDan Murphy default:
3687132fe4fSDan Murphy error = regmap_register_patch(haptics->regmap,
3697132fe4fSDan Murphy drv260x_lra_init_regs,
3707132fe4fSDan Murphy ARRAY_SIZE(drv260x_lra_init_regs));
3717132fe4fSDan Murphy if (error) {
3727132fe4fSDan Murphy dev_err(&haptics->client->dev,
3737132fe4fSDan Murphy "Failed to write LRA init registers: %d\n",
3747132fe4fSDan Murphy error);
3757132fe4fSDan Murphy return error;
3767132fe4fSDan Murphy }
3777132fe4fSDan Murphy
3787132fe4fSDan Murphy error = regmap_update_bits(haptics->regmap, DRV260X_LIB_SEL,
3797132fe4fSDan Murphy DRV260X_LIB_SEL_MASK,
3807132fe4fSDan Murphy haptics->library);
3817132fe4fSDan Murphy if (error) {
3827132fe4fSDan Murphy dev_err(&haptics->client->dev,
3837132fe4fSDan Murphy "Failed to write DRV260X_LIB_SEL register: %d\n",
3847132fe4fSDan Murphy error);
3857132fe4fSDan Murphy return error;
3867132fe4fSDan Murphy }
3877132fe4fSDan Murphy
3887132fe4fSDan Murphy /* No need to set GO bit here */
3897132fe4fSDan Murphy return 0;
3907132fe4fSDan Murphy }
3917132fe4fSDan Murphy
3927132fe4fSDan Murphy error = regmap_write(haptics->regmap, DRV260X_GO, DRV260X_GO_BIT);
3937132fe4fSDan Murphy if (error) {
3947132fe4fSDan Murphy dev_err(&haptics->client->dev,
3957132fe4fSDan Murphy "Failed to write GO register: %d\n",
3967132fe4fSDan Murphy error);
3977132fe4fSDan Murphy return error;
3987132fe4fSDan Murphy }
3997132fe4fSDan Murphy
4007132fe4fSDan Murphy do {
401efef661dSLuca Weiss usleep_range(15000, 15500);
4027132fe4fSDan Murphy error = regmap_read(haptics->regmap, DRV260X_GO, &cal_buf);
4037132fe4fSDan Murphy if (error) {
4047132fe4fSDan Murphy dev_err(&haptics->client->dev,
4057132fe4fSDan Murphy "Failed to read GO register: %d\n",
4067132fe4fSDan Murphy error);
4077132fe4fSDan Murphy return error;
4087132fe4fSDan Murphy }
4097132fe4fSDan Murphy } while (cal_buf == DRV260X_GO_BIT);
4107132fe4fSDan Murphy
4117132fe4fSDan Murphy return 0;
4127132fe4fSDan Murphy }
4137132fe4fSDan Murphy
4147132fe4fSDan Murphy static const struct regmap_config drv260x_regmap_config = {
4157132fe4fSDan Murphy .reg_bits = 8,
4167132fe4fSDan Murphy .val_bits = 8,
4177132fe4fSDan Murphy
4187132fe4fSDan Murphy .max_register = DRV260X_MAX_REG,
4197132fe4fSDan Murphy .cache_type = REGCACHE_NONE,
4207132fe4fSDan Murphy };
4217132fe4fSDan Murphy
drv260x_probe(struct i2c_client * client)42295554916SUwe Kleine-König static int drv260x_probe(struct i2c_client *client)
4237132fe4fSDan Murphy {
424ba4cf378SDmitry Torokhov struct device *dev = &client->dev;
4257132fe4fSDan Murphy struct drv260x_data *haptics;
42634888602SJingkui Wang u32 voltage;
4277132fe4fSDan Murphy int error;
4287132fe4fSDan Murphy
429ba4cf378SDmitry Torokhov haptics = devm_kzalloc(dev, sizeof(*haptics), GFP_KERNEL);
4307132fe4fSDan Murphy if (!haptics)
4317132fe4fSDan Murphy return -ENOMEM;
4327132fe4fSDan Murphy
43334888602SJingkui Wang error = device_property_read_u32(dev, "mode", &haptics->mode);
43434888602SJingkui Wang if (error) {
43534888602SJingkui Wang dev_err(dev, "Can't fetch 'mode' property: %d\n", error);
4367132fe4fSDan Murphy return error;
4377132fe4fSDan Murphy }
4387132fe4fSDan Murphy
4397132fe4fSDan Murphy if (haptics->mode < DRV260X_LRA_MODE ||
4407132fe4fSDan Murphy haptics->mode > DRV260X_ERM_MODE) {
441ba4cf378SDmitry Torokhov dev_err(dev, "Vibrator mode is invalid: %i\n", haptics->mode);
4427132fe4fSDan Murphy return -EINVAL;
4437132fe4fSDan Murphy }
4447132fe4fSDan Murphy
44534888602SJingkui Wang error = device_property_read_u32(dev, "library-sel", &haptics->library);
44634888602SJingkui Wang if (error) {
44734888602SJingkui Wang dev_err(dev, "Can't fetch 'library-sel' property: %d\n", error);
44834888602SJingkui Wang return error;
44934888602SJingkui Wang }
45034888602SJingkui Wang
4517132fe4fSDan Murphy if (haptics->library < DRV260X_LIB_EMPTY ||
4527132fe4fSDan Murphy haptics->library > DRV260X_ERM_LIB_F) {
453ba4cf378SDmitry Torokhov dev_err(dev,
4547132fe4fSDan Murphy "Library value is invalid: %i\n", haptics->library);
4557132fe4fSDan Murphy return -EINVAL;
4567132fe4fSDan Murphy }
4577132fe4fSDan Murphy
4587132fe4fSDan Murphy if (haptics->mode == DRV260X_LRA_MODE &&
4597132fe4fSDan Murphy haptics->library != DRV260X_LIB_EMPTY &&
4607132fe4fSDan Murphy haptics->library != DRV260X_LIB_LRA) {
461ba4cf378SDmitry Torokhov dev_err(dev, "LRA Mode with ERM Library mismatch\n");
4627132fe4fSDan Murphy return -EINVAL;
4637132fe4fSDan Murphy }
4647132fe4fSDan Murphy
465dddf3bc4SDan Murphy if (haptics->mode == DRV260X_ERM_MODE &&
466dddf3bc4SDan Murphy (haptics->library == DRV260X_LIB_EMPTY ||
467dddf3bc4SDan Murphy haptics->library == DRV260X_LIB_LRA)) {
468ba4cf378SDmitry Torokhov dev_err(dev, "ERM Mode with LRA Library mismatch\n");
469dddf3bc4SDan Murphy return -EINVAL;
470dddf3bc4SDan Murphy }
471dddf3bc4SDan Murphy
47234888602SJingkui Wang error = device_property_read_u32(dev, "vib-rated-mv", &voltage);
47334888602SJingkui Wang haptics->rated_voltage = error ? DRV260X_DEF_RATED_VOLT :
47434888602SJingkui Wang drv260x_calculate_voltage(voltage);
47534888602SJingkui Wang
47634888602SJingkui Wang error = device_property_read_u32(dev, "vib-overdrive-mv", &voltage);
47734888602SJingkui Wang haptics->overdrive_voltage = error ? DRV260X_DEF_OD_CLAMP_VOLT :
47834888602SJingkui Wang drv260x_calculate_voltage(voltage);
47934888602SJingkui Wang
480ba4cf378SDmitry Torokhov haptics->regulator = devm_regulator_get(dev, "vbat");
4817132fe4fSDan Murphy if (IS_ERR(haptics->regulator)) {
4827132fe4fSDan Murphy error = PTR_ERR(haptics->regulator);
483ba4cf378SDmitry Torokhov dev_err(dev, "unable to get regulator, error: %d\n", error);
4847132fe4fSDan Murphy return error;
4857132fe4fSDan Murphy }
4867132fe4fSDan Murphy
487ba4cf378SDmitry Torokhov haptics->enable_gpio = devm_gpiod_get_optional(dev, "enable",
488ea0afac4SUwe Kleine-König GPIOD_OUT_HIGH);
489ea0afac4SUwe Kleine-König if (IS_ERR(haptics->enable_gpio))
490ea0afac4SUwe Kleine-König return PTR_ERR(haptics->enable_gpio);
4917132fe4fSDan Murphy
492ba4cf378SDmitry Torokhov haptics->input_dev = devm_input_allocate_device(dev);
4937132fe4fSDan Murphy if (!haptics->input_dev) {
494a0d86ecdSGuenter Roeck dev_err(dev, "Failed to allocate input device\n");
4957132fe4fSDan Murphy return -ENOMEM;
4967132fe4fSDan Murphy }
4977132fe4fSDan Murphy
4987132fe4fSDan Murphy haptics->input_dev->name = "drv260x:haptics";
4997132fe4fSDan Murphy haptics->input_dev->close = drv260x_close;
5007132fe4fSDan Murphy input_set_drvdata(haptics->input_dev, haptics);
5017132fe4fSDan Murphy input_set_capability(haptics->input_dev, EV_FF, FF_RUMBLE);
5027132fe4fSDan Murphy
5037132fe4fSDan Murphy error = input_ff_create_memless(haptics->input_dev, NULL,
5047132fe4fSDan Murphy drv260x_haptics_play);
5057132fe4fSDan Murphy if (error) {
506ba4cf378SDmitry Torokhov dev_err(dev, "input_ff_create() failed: %d\n", error);
5077132fe4fSDan Murphy return error;
5087132fe4fSDan Murphy }
5097132fe4fSDan Murphy
5107132fe4fSDan Murphy INIT_WORK(&haptics->work, drv260x_worker);
5117132fe4fSDan Murphy
5127132fe4fSDan Murphy haptics->client = client;
5137132fe4fSDan Murphy i2c_set_clientdata(client, haptics);
5147132fe4fSDan Murphy
5157132fe4fSDan Murphy haptics->regmap = devm_regmap_init_i2c(client, &drv260x_regmap_config);
5167132fe4fSDan Murphy if (IS_ERR(haptics->regmap)) {
5177132fe4fSDan Murphy error = PTR_ERR(haptics->regmap);
518ba4cf378SDmitry Torokhov dev_err(dev, "Failed to allocate register map: %d\n", error);
5197132fe4fSDan Murphy return error;
5207132fe4fSDan Murphy }
5217132fe4fSDan Murphy
5227132fe4fSDan Murphy error = drv260x_init(haptics);
5237132fe4fSDan Murphy if (error) {
524ba4cf378SDmitry Torokhov dev_err(dev, "Device init failed: %d\n", error);
5257132fe4fSDan Murphy return error;
5267132fe4fSDan Murphy }
5277132fe4fSDan Murphy
5287132fe4fSDan Murphy error = input_register_device(haptics->input_dev);
5297132fe4fSDan Murphy if (error) {
530ba4cf378SDmitry Torokhov dev_err(dev, "couldn't register input device: %d\n", error);
5317132fe4fSDan Murphy return error;
5327132fe4fSDan Murphy }
5337132fe4fSDan Murphy
5347132fe4fSDan Murphy return 0;
5357132fe4fSDan Murphy }
5367132fe4fSDan Murphy
drv260x_suspend(struct device * dev)537c7cf2b4dSJonathan Cameron static int drv260x_suspend(struct device *dev)
5387132fe4fSDan Murphy {
5397132fe4fSDan Murphy struct drv260x_data *haptics = dev_get_drvdata(dev);
5407132fe4fSDan Murphy int ret = 0;
5417132fe4fSDan Murphy
5427132fe4fSDan Murphy mutex_lock(&haptics->input_dev->mutex);
5437132fe4fSDan Murphy
544d69f0a43SAndrzej Pietrasiewicz if (input_device_enabled(haptics->input_dev)) {
5457132fe4fSDan Murphy ret = regmap_update_bits(haptics->regmap,
5467132fe4fSDan Murphy DRV260X_MODE,
5477132fe4fSDan Murphy DRV260X_STANDBY_MASK,
5487132fe4fSDan Murphy DRV260X_STANDBY);
5497132fe4fSDan Murphy if (ret) {
5507132fe4fSDan Murphy dev_err(dev, "Failed to set standby mode\n");
5517132fe4fSDan Murphy goto out;
5527132fe4fSDan Murphy }
5537132fe4fSDan Murphy
5547132fe4fSDan Murphy gpiod_set_value(haptics->enable_gpio, 0);
5557132fe4fSDan Murphy
5567132fe4fSDan Murphy ret = regulator_disable(haptics->regulator);
5577132fe4fSDan Murphy if (ret) {
5587132fe4fSDan Murphy dev_err(dev, "Failed to disable regulator\n");
5597132fe4fSDan Murphy regmap_update_bits(haptics->regmap,
5607132fe4fSDan Murphy DRV260X_MODE,
5617132fe4fSDan Murphy DRV260X_STANDBY_MASK, 0);
5627132fe4fSDan Murphy }
5637132fe4fSDan Murphy }
5647132fe4fSDan Murphy out:
5657132fe4fSDan Murphy mutex_unlock(&haptics->input_dev->mutex);
5667132fe4fSDan Murphy return ret;
5677132fe4fSDan Murphy }
5687132fe4fSDan Murphy
drv260x_resume(struct device * dev)569c7cf2b4dSJonathan Cameron static int drv260x_resume(struct device *dev)
5707132fe4fSDan Murphy {
5717132fe4fSDan Murphy struct drv260x_data *haptics = dev_get_drvdata(dev);
5727132fe4fSDan Murphy int ret = 0;
5737132fe4fSDan Murphy
5747132fe4fSDan Murphy mutex_lock(&haptics->input_dev->mutex);
5757132fe4fSDan Murphy
576d69f0a43SAndrzej Pietrasiewicz if (input_device_enabled(haptics->input_dev)) {
5777132fe4fSDan Murphy ret = regulator_enable(haptics->regulator);
5787132fe4fSDan Murphy if (ret) {
5797132fe4fSDan Murphy dev_err(dev, "Failed to enable regulator\n");
5807132fe4fSDan Murphy goto out;
5817132fe4fSDan Murphy }
5827132fe4fSDan Murphy
5837132fe4fSDan Murphy ret = regmap_update_bits(haptics->regmap,
5847132fe4fSDan Murphy DRV260X_MODE,
5857132fe4fSDan Murphy DRV260X_STANDBY_MASK, 0);
5867132fe4fSDan Murphy if (ret) {
5877132fe4fSDan Murphy dev_err(dev, "Failed to unset standby mode\n");
5887132fe4fSDan Murphy regulator_disable(haptics->regulator);
5897132fe4fSDan Murphy goto out;
5907132fe4fSDan Murphy }
5917132fe4fSDan Murphy
5927132fe4fSDan Murphy gpiod_set_value(haptics->enable_gpio, 1);
5937132fe4fSDan Murphy }
5947132fe4fSDan Murphy
5957132fe4fSDan Murphy out:
5967132fe4fSDan Murphy mutex_unlock(&haptics->input_dev->mutex);
5977132fe4fSDan Murphy return ret;
5987132fe4fSDan Murphy }
5997132fe4fSDan Murphy
600c7cf2b4dSJonathan Cameron static DEFINE_SIMPLE_DEV_PM_OPS(drv260x_pm_ops, drv260x_suspend, drv260x_resume);
6017132fe4fSDan Murphy
6027132fe4fSDan Murphy static const struct i2c_device_id drv260x_id[] = {
6037132fe4fSDan Murphy { "drv2605l", 0 },
6047132fe4fSDan Murphy { }
6057132fe4fSDan Murphy };
6067132fe4fSDan Murphy MODULE_DEVICE_TABLE(i2c, drv260x_id);
6077132fe4fSDan Murphy
6087132fe4fSDan Murphy static const struct of_device_id drv260x_of_match[] = {
6097132fe4fSDan Murphy { .compatible = "ti,drv2604", },
6107132fe4fSDan Murphy { .compatible = "ti,drv2604l", },
6117132fe4fSDan Murphy { .compatible = "ti,drv2605", },
6127132fe4fSDan Murphy { .compatible = "ti,drv2605l", },
6137132fe4fSDan Murphy { }
6147132fe4fSDan Murphy };
6157132fe4fSDan Murphy MODULE_DEVICE_TABLE(of, drv260x_of_match);
6167132fe4fSDan Murphy
6177132fe4fSDan Murphy static struct i2c_driver drv260x_driver = {
618*d8bde56dSUwe Kleine-König .probe = drv260x_probe,
6197132fe4fSDan Murphy .driver = {
6207132fe4fSDan Murphy .name = "drv260x-haptics",
621bc682a50SJingkui Wang .of_match_table = drv260x_of_match,
622c7cf2b4dSJonathan Cameron .pm = pm_sleep_ptr(&drv260x_pm_ops),
6237132fe4fSDan Murphy },
6247132fe4fSDan Murphy .id_table = drv260x_id,
6257132fe4fSDan Murphy };
6267132fe4fSDan Murphy module_i2c_driver(drv260x_driver);
6277132fe4fSDan Murphy
6287132fe4fSDan Murphy MODULE_DESCRIPTION("TI DRV260x haptics driver");
6297132fe4fSDan Murphy MODULE_LICENSE("GPL");
6307132fe4fSDan Murphy MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
631