Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *  PWM vibrator driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *  Copyright (C) 2017 Collabora Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *  Based on previous work from:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  *  Copyright (C) 2012 Dmitry Torokhov <dmitry.torokhov@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  *  Based on PWM beeper driver:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/property.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/pwm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) struct pwm_vibrator {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	struct pwm_device *pwm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	struct pwm_device *pwm_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	struct regulator *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	struct work_struct play_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	u16 level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	u32 direction_duty_cycle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	bool vcc_on;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static int pwm_vibrator_start(struct pwm_vibrator *vibrator)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	struct device *pdev = vibrator->input->dev.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	struct pwm_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	if (!vibrator->vcc_on) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		err = regulator_enable(vibrator->vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 		if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 			dev_err(pdev, "failed to enable regulator: %d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		vibrator->vcc_on = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	pwm_get_state(vibrator->pwm, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	pwm_set_relative_duty_cycle(&state, vibrator->level, 0xffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	state.enabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	err = pwm_apply_state(vibrator->pwm, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 		dev_err(pdev, "failed to apply pwm state: %d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	if (vibrator->pwm_dir) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		pwm_get_state(vibrator->pwm_dir, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 		state.duty_cycle = vibrator->direction_duty_cycle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		state.enabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 		err = pwm_apply_state(vibrator->pwm_dir, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 			dev_err(pdev, "failed to apply dir-pwm state: %d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 			pwm_disable(vibrator->pwm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) static void pwm_vibrator_stop(struct pwm_vibrator *vibrator)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	if (vibrator->pwm_dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		pwm_disable(vibrator->pwm_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	pwm_disable(vibrator->pwm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	if (vibrator->vcc_on) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 		regulator_disable(vibrator->vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		vibrator->vcc_on = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) static void pwm_vibrator_play_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	struct pwm_vibrator *vibrator = container_of(work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 					struct pwm_vibrator, play_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	if (vibrator->level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		pwm_vibrator_start(vibrator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		pwm_vibrator_stop(vibrator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static int pwm_vibrator_play_effect(struct input_dev *dev, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 				    struct ff_effect *effect)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	struct pwm_vibrator *vibrator = input_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	vibrator->level = effect->u.rumble.strong_magnitude;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	if (!vibrator->level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 		vibrator->level = effect->u.rumble.weak_magnitude;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	schedule_work(&vibrator->play_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) static void pwm_vibrator_close(struct input_dev *input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	struct pwm_vibrator *vibrator = input_get_drvdata(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	cancel_work_sync(&vibrator->play_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	pwm_vibrator_stop(vibrator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int pwm_vibrator_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	struct pwm_vibrator *vibrator;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	struct pwm_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	vibrator = devm_kzalloc(&pdev->dev, sizeof(*vibrator), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	if (!vibrator)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	vibrator->input = devm_input_allocate_device(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	if (!vibrator->input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	vibrator->vcc = devm_regulator_get(&pdev->dev, "vcc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	err = PTR_ERR_OR_ZERO(vibrator->vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 		if (err != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 			dev_err(&pdev->dev, "Failed to request regulator: %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 				err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	vibrator->pwm = devm_pwm_get(&pdev->dev, "enable");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	err = PTR_ERR_OR_ZERO(vibrator->pwm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		if (err != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			dev_err(&pdev->dev, "Failed to request main pwm: %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 				err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	INIT_WORK(&vibrator->play_work, pwm_vibrator_play_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	/* Sync up PWM state and ensure it is off. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	pwm_init_state(vibrator->pwm, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	state.enabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	err = pwm_apply_state(vibrator->pwm, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		dev_err(&pdev->dev, "failed to apply initial PWM state: %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 			err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	vibrator->pwm_dir = devm_pwm_get(&pdev->dev, "direction");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	err = PTR_ERR_OR_ZERO(vibrator->pwm_dir);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	switch (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		/* Sync up PWM state and ensure it is off. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		pwm_init_state(vibrator->pwm_dir, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		state.enabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 		err = pwm_apply_state(vibrator->pwm_dir, &state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 		if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 			dev_err(&pdev->dev, "failed to apply initial PWM state: %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 				err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		vibrator->direction_duty_cycle =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 			pwm_get_period(vibrator->pwm_dir) / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 		device_property_read_u32(&pdev->dev, "direction-duty-cycle-ns",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 					 &vibrator->direction_duty_cycle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	case -ENODATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		/* Direction PWM is optional */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 		vibrator->pwm_dir = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 		dev_err(&pdev->dev, "Failed to request direction pwm: %d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	case -EPROBE_DEFER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	vibrator->input->name = "pwm-vibrator";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	vibrator->input->id.bustype = BUS_HOST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	vibrator->input->dev.parent = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	vibrator->input->close = pwm_vibrator_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	input_set_drvdata(vibrator->input, vibrator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	input_set_capability(vibrator->input, EV_FF, FF_RUMBLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	err = input_ff_create_memless(vibrator->input, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 				      pwm_vibrator_play_effect);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 		dev_err(&pdev->dev, "Couldn't create FF dev: %d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	err = input_register_device(vibrator->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		dev_err(&pdev->dev, "Couldn't register input dev: %d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	platform_set_drvdata(pdev, vibrator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static int __maybe_unused pwm_vibrator_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	struct pwm_vibrator *vibrator = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	cancel_work_sync(&vibrator->play_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	if (vibrator->level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 		pwm_vibrator_stop(vibrator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static int __maybe_unused pwm_vibrator_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 	struct pwm_vibrator *vibrator = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	if (vibrator->level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 		pwm_vibrator_start(vibrator);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static SIMPLE_DEV_PM_OPS(pwm_vibrator_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			 pwm_vibrator_suspend, pwm_vibrator_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static const struct of_device_id pwm_vibra_dt_match_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	{ .compatible = "pwm-vibrator" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) MODULE_DEVICE_TABLE(of, pwm_vibra_dt_match_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static struct platform_driver pwm_vibrator_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	.probe	= pwm_vibrator_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	.driver	= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		.name	= "pwm-vibrator",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 		.pm	= &pwm_vibrator_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		.of_match_table = of_match_ptr(pwm_vibra_dt_match_table),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) module_platform_driver(pwm_vibrator_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) MODULE_AUTHOR("Sebastian Reichel <sre@kernel.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) MODULE_DESCRIPTION("PWM vibrator driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) MODULE_ALIAS("platform:pwm-vibrator");