1 // SPDX-License-Identifier: GPL-2.0-only
3  * TI LP8788 MFD - buck regulator driver
16 #include <linux/gpio.h>
91 	void *dvs;  member
102 	struct lp8788_buck1_dvs *dvs = (struct lp8788_buck1_dvs *)buck->dvs;  in lp8788_buck1_set_dvs()  local
105 	if (!dvs)  in lp8788_buck1_set_dvs()
108 	pinstate = dvs->vsel == DVS_SEL_V0 ? DVS_LOW : DVS_HIGH;  in lp8788_buck1_set_dvs()
109 	if (gpio_is_valid(dvs->gpio))  in lp8788_buck1_set_dvs()
110 		gpio_set_value(dvs->gpio, pinstate);  in lp8788_buck1_set_dvs()
115 	struct lp8788_buck2_dvs *dvs = (struct lp8788_buck2_dvs *)buck->dvs;  in lp8788_buck2_set_dvs()  local
118 	if (!dvs)  in lp8788_buck2_set_dvs()
121 	switch (dvs->vsel) {  in lp8788_buck2_set_dvs()
142 	if (gpio_is_valid(dvs->gpio[0]))  in lp8788_buck2_set_dvs()
143 		gpio_set_value(dvs->gpio[0], pin1);  in lp8788_buck2_set_dvs()
145 	if (gpio_is_valid(dvs->gpio[1]))  in lp8788_buck2_set_dvs()
146 		gpio_set_value(dvs->gpio[1], pin2);  in lp8788_buck2_set_dvs()
179 	lp8788_read_byte(buck->lp, LP8788_BUCK_DVS_SEL, &val);  in lp8788_get_buck_dvs_ctrl_mode()
213 			b1_dvs = (struct lp8788_buck1_dvs *)buck->dvs;  in lp8788_select_buck_vout_addr()
217 			idx = gpio_get_value(b1_dvs->gpio) ? 1 : 0;  in lp8788_select_buck_vout_addr()
219 			lp8788_read_byte(buck->lp, LP8788_BUCK_DVS_SEL, &val);  in lp8788_select_buck_vout_addr()
226 			b2_dvs = (struct lp8788_buck2_dvs *)buck->dvs;  in lp8788_select_buck_vout_addr()
230 			pin1 = gpio_get_value(b2_dvs->gpio[0]);  in lp8788_select_buck_vout_addr()
231 			pin2 = gpio_get_value(b2_dvs->gpio[1]);  in lp8788_select_buck_vout_addr()
242 			lp8788_read_byte(buck->lp, LP8788_BUCK_DVS_SEL, &val);  in lp8788_select_buck_vout_addr()
263 	if (buck->dvs)  in lp8788_buck12_set_voltage_sel()
268 		return -EINVAL;  in lp8788_buck12_set_voltage_sel()
270 	return lp8788_update_bits(buck->lp, addr, LP8788_VOUT_M, selector);  in lp8788_buck12_set_voltage_sel()
282 		return -EINVAL;  in lp8788_buck12_get_voltage_sel()
284 	ret = lp8788_read_byte(buck->lp, addr, &val);  in lp8788_buck12_get_voltage_sel()
297 	if (lp8788_read_byte(buck->lp, addr, &val))  in lp8788_buck_enable_time()
298 		return -EINVAL;  in lp8788_buck_enable_time()
320 		return -EINVAL;  in lp8788_buck_set_mode()
323 	return lp8788_update_bits(buck->lp, LP8788_BUCK_PWM, mask, val);  in lp8788_buck_set_mode()
333 	ret = lp8788_read_byte(buck->lp, LP8788_BUCK_PWM, &val);  in lp8788_buck_get_mode()
426 	struct lp8788_platform_data *pdata = buck->lp->pdata;  in lp8788_dvs_gpio_request()
429 	int i, gpio, ret;  in lp8788_dvs_gpio_request()  local
433 		gpio = pdata->buck1_dvs->gpio;  in lp8788_dvs_gpio_request()
434 		ret = devm_gpio_request_one(&pdev->dev, gpio, DVS_LOW,  in lp8788_dvs_gpio_request()
439 		buck->dvs = pdata->buck1_dvs;  in lp8788_dvs_gpio_request()
443 			gpio = pdata->buck2_dvs->gpio[i];  in lp8788_dvs_gpio_request()
444 			ret = devm_gpio_request_one(&pdev->dev, gpio,  in lp8788_dvs_gpio_request()
449 		buck->dvs = pdata->buck2_dvs;  in lp8788_dvs_gpio_request()
461 	struct lp8788_platform_data *pdata = buck->lp->pdata;  in lp8788_init_dvs()
466 	/* no dvs for buck3, 4 */  in lp8788_init_dvs()
470 	/* no dvs platform data, then dvs will be selected by I2C registers */  in lp8788_init_dvs()
474 	if ((id == BUCK1 && !pdata->buck1_dvs) ||  in lp8788_init_dvs()
475 		(id == BUCK2 && !pdata->buck2_dvs))  in lp8788_init_dvs()
481 	return lp8788_update_bits(buck->lp, LP8788_BUCK_DVS_SEL, mask[id],  in lp8788_init_dvs()
485 	return lp8788_update_bits(buck->lp, LP8788_BUCK_DVS_SEL, mask[id],  in lp8788_init_dvs()
491 	struct lp8788 *lp = dev_get_drvdata(pdev->dev.parent);  in lp8788_buck_probe()
492 	int id = pdev->id;  in lp8788_buck_probe()
499 		return -EINVAL;  in lp8788_buck_probe()
501 	buck = devm_kzalloc(&pdev->dev, sizeof(struct lp8788_buck), GFP_KERNEL);  in lp8788_buck_probe()
503 		return -ENOMEM;  in lp8788_buck_probe()
505 	buck->lp = lp;  in lp8788_buck_probe()
511 	cfg.dev = pdev->dev.parent;  in lp8788_buck_probe()
512 	cfg.init_data = lp->pdata ? lp->pdata->buck_data[id] : NULL;  in lp8788_buck_probe()
514 	cfg.regmap = lp->regmap;  in lp8788_buck_probe()
516 	rdev = devm_regulator_register(&pdev->dev, &lp8788_buck_desc[id], &cfg);  in lp8788_buck_probe()
519 		dev_err(&pdev->dev, "BUCK%d regulator register err = %d\n",  in lp8788_buck_probe()
524 	buck->regulator = rdev;  in lp8788_buck_probe()
552 MODULE_ALIAS("platform:lp8788-buck");