1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
17 #define VIB_MAX_LEVELS		(VIB_MAX_LEVEL_mV - VIB_MIN_LEVEL_mV)
48  * struct pm8xxx_vib - structure to hold vibrator data
56  * @reg_vib_drv: regs->drv_addr register value
70  * pm8xxx_vib_set - handler to start/stop vibration
71  * @vib: pointer to vibrator structure
74 static int pm8xxx_vib_set(struct pm8xxx_vib *vib, bool on)  in pm8xxx_vib_set()  argument
77 	unsigned int val = vib->reg_vib_drv;  in pm8xxx_vib_set()
78 	const struct pm8xxx_regs *regs = vib->regs;  in pm8xxx_vib_set()
81 		val |= (vib->level << regs->drv_shift) & regs->drv_mask;  in pm8xxx_vib_set()
83 		val &= ~regs->drv_mask;  in pm8xxx_vib_set()
85 	rc = regmap_write(vib->regmap, regs->drv_addr, val);  in pm8xxx_vib_set()
89 	vib->reg_vib_drv = val;  in pm8xxx_vib_set()
91 	if (regs->enable_mask)  in pm8xxx_vib_set()
92 		rc = regmap_update_bits(vib->regmap, regs->enable_addr,  in pm8xxx_vib_set()
93 					regs->enable_mask, on ? ~0 : 0);  in pm8xxx_vib_set()
99  * pm8xxx_work_handler - worker to set vibration level
104 	struct pm8xxx_vib *vib = container_of(work, struct pm8xxx_vib, work);  in pm8xxx_work_handler()  local
105 	const struct pm8xxx_regs *regs = vib->regs;  in pm8xxx_work_handler()
109 	rc = regmap_read(vib->regmap, regs->drv_addr, &val);  in pm8xxx_work_handler()
117 	if (vib->speed) {  in pm8xxx_work_handler()
118 		vib->active = true;  in pm8xxx_work_handler()
119 		vib->level = ((VIB_MAX_LEVELS * vib->speed) / MAX_FF_SPEED) +  in pm8xxx_work_handler()
121 		vib->level /= 100;  in pm8xxx_work_handler()
123 		vib->active = false;  in pm8xxx_work_handler()
124 		vib->level = VIB_MIN_LEVEL_mV / 100;  in pm8xxx_work_handler()
127 	pm8xxx_vib_set(vib, vib->active);  in pm8xxx_work_handler()
131  * pm8xxx_vib_close - callback of input close callback
138 	struct pm8xxx_vib *vib = input_get_drvdata(dev);  in pm8xxx_vib_close()  local
140 	cancel_work_sync(&vib->work);  in pm8xxx_vib_close()
141 	if (vib->active)  in pm8xxx_vib_close()
142 		pm8xxx_vib_set(vib, false);  in pm8xxx_vib_close()
146  * pm8xxx_vib_play_effect - function to handle vib effects.
156 	struct pm8xxx_vib *vib = input_get_drvdata(dev);  in pm8xxx_vib_play_effect()  local
158 	vib->speed = effect->u.rumble.strong_magnitude >> 8;  in pm8xxx_vib_play_effect()
159 	if (!vib->speed)  in pm8xxx_vib_play_effect()
160 		vib->speed = effect->u.rumble.weak_magnitude >> 9;  in pm8xxx_vib_play_effect()
162 	schedule_work(&vib->work);  in pm8xxx_vib_play_effect()
169 	struct pm8xxx_vib *vib;  in pm8xxx_vib_probe()  local
175 	vib = devm_kzalloc(&pdev->dev, sizeof(*vib), GFP_KERNEL);  in pm8xxx_vib_probe()
176 	if (!vib)  in pm8xxx_vib_probe()
177 		return -ENOMEM;  in pm8xxx_vib_probe()
179 	vib->regmap = dev_get_regmap(pdev->dev.parent, NULL);  in pm8xxx_vib_probe()
180 	if (!vib->regmap)  in pm8xxx_vib_probe()
181 		return -ENODEV;  in pm8xxx_vib_probe()
183 	input_dev = devm_input_allocate_device(&pdev->dev);  in pm8xxx_vib_probe()
185 		return -ENOMEM;  in pm8xxx_vib_probe()
187 	INIT_WORK(&vib->work, pm8xxx_work_handler);  in pm8xxx_vib_probe()
188 	vib->vib_input_dev = input_dev;  in pm8xxx_vib_probe()
190 	regs = of_device_get_match_data(&pdev->dev);  in pm8xxx_vib_probe()
193 	error = regmap_read(vib->regmap, regs->drv_addr, &val);  in pm8xxx_vib_probe()
197 	val &= regs->drv_en_manual_mask;  in pm8xxx_vib_probe()
198 	error = regmap_write(vib->regmap, regs->drv_addr, val);  in pm8xxx_vib_probe()
202 	vib->regs = regs;  in pm8xxx_vib_probe()
203 	vib->reg_vib_drv = val;  in pm8xxx_vib_probe()
205 	input_dev->name = "pm8xxx_vib_ffmemless";  in pm8xxx_vib_probe()
206 	input_dev->id.version = 1;  in pm8xxx_vib_probe()
207 	input_dev->close = pm8xxx_vib_close;  in pm8xxx_vib_probe()
208 	input_set_drvdata(input_dev, vib);  in pm8xxx_vib_probe()
209 	input_set_capability(vib->vib_input_dev, EV_FF, FF_RUMBLE);  in pm8xxx_vib_probe()
214 		dev_err(&pdev->dev,  in pm8xxx_vib_probe()
221 		dev_err(&pdev->dev, "couldn't register input device\n");  in pm8xxx_vib_probe()
225 	platform_set_drvdata(pdev, vib);  in pm8xxx_vib_probe()
231 	struct pm8xxx_vib *vib = dev_get_drvdata(dev);  in pm8xxx_vib_suspend()  local
234 	pm8xxx_vib_set(vib, false);  in pm8xxx_vib_suspend()
242 	{ .compatible = "qcom,pm8058-vib", .data = &pm8058_regs },
243 	{ .compatible = "qcom,pm8921-vib", .data = &pm8058_regs },
244 	{ .compatible = "qcom,pm8916-vib", .data = &pm8916_regs },
252 		.name	= "pm8xxx-vib",
260 MODULE_DESCRIPTION("PMIC8xxx vibrator driver based on ff-memless framework");