1 // SPDX-License-Identifier: GPL-2.0
112 	ret = regmap_read(di->regmap, RK860X_MAX_SET, &val);  in rk860x_get_voltage()
130 	ret = regmap_update_bits(di->regmap, di->sleep_reg,  in rk860x_set_suspend_voltage()
131 				 di->vol_mask, ret);  in rk860x_set_suspend_voltage()
142 	return regmap_update_bits(di->regmap, di->sleep_en_reg,  in rk860x_set_suspend_enable()
150 	return regmap_update_bits(di->regmap, di->sleep_en_reg,  in rk860x_set_suspend_disable()
158 	if (!rdev->constraints->state_mem.changeable)  in rk860x_resume()
172 	if (di->vsel_gpio) {  in rk860x_set_enable()
173 		gpiod_set_raw_value(di->vsel_gpio, !di->sleep_vsel_id);  in rk860x_set_enable()
177 	return regmap_update_bits(di->regmap, di->en_reg,  in rk860x_set_enable()
185 	if (di->vsel_gpio) {  in rk860x_set_disable()
186 		gpiod_set_raw_value(di->vsel_gpio, di->sleep_vsel_id);  in rk860x_set_disable()
190 	return regmap_update_bits(di->regmap, di->en_reg,  in rk860x_set_disable()
200 	if (di->vsel_gpio) {  in rk860x_is_enabled()
201 		if (di->sleep_vsel_id)  in rk860x_is_enabled()
202 			return !gpiod_get_raw_value(di->vsel_gpio);  in rk860x_is_enabled()
204 			return gpiod_get_raw_value(di->vsel_gpio);  in rk860x_is_enabled()
207 	ret = regmap_read(di->regmap, di->en_reg, &val);  in rk860x_is_enabled()
222 		regmap_update_bits(di->regmap, di->mode_reg,  in rk860x_set_mode()
223 				   di->mode_mask, di->mode_mask);  in rk860x_set_mode()
226 		regmap_update_bits(di->regmap, di->mode_reg, di->mode_mask, 0);  in rk860x_set_mode()
229 		return -EINVAL;  in rk860x_set_mode()
240 	ret = regmap_read(di->regmap, di->mode_reg, &val);  in rk860x_get_mode()
243 	if (val & di->mode_mask)  in rk860x_get_mode()
263 	int regval = -1, i;  in rk860x_set_ramp()
278 		dev_err(di->dev, "unsupported ramp value %d\n", ramp);  in rk860x_set_ramp()
279 		return -EINVAL;  in rk860x_set_ramp()
282 	return regmap_update_bits(di->regmap, di->slew_reg,  in rk860x_set_ramp()
283 				  di->slew_mask, regval << di->slew_shift);  in rk860x_set_ramp()
315 	switch (di->chip_id) {  in rk860x_device_setup()
318 		di->vsel_min = 712500;  in rk860x_device_setup()
319 		di->vsel_step = 12500;  in rk860x_device_setup()
320 		di->n_voltages = RK860X_NVOLTAGES_64;  in rk860x_device_setup()
321 		di->vol_mask = VSEL_A_NSEL_MASK;  in rk860x_device_setup()
322 		if (di->sleep_vsel_id) {  in rk860x_device_setup()
323 			di->sleep_reg = RK860X_VSEL1_A;  in rk860x_device_setup()
324 			di->vol_reg = RK860X_VSEL0_A;  in rk860x_device_setup()
325 			di->mode_reg = RK860X_VSEL0_A;  in rk860x_device_setup()
326 			di->en_reg = RK860X_VSEL0_A;  in rk860x_device_setup()
327 			di->sleep_en_reg = RK860X_VSEL1_A;  in rk860x_device_setup()
329 			di->sleep_reg = RK860X_VSEL0_A;  in rk860x_device_setup()
330 			di->vol_reg = RK860X_VSEL1_A;  in rk860x_device_setup()
331 			di->mode_reg = RK860X_VSEL1_A;  in rk860x_device_setup()
332 			di->en_reg = RK860X_VSEL1_A;  in rk860x_device_setup()
333 			di->sleep_en_reg = RK860X_VSEL0_A;  in rk860x_device_setup()
338 		di->vsel_min = 500000;  in rk860x_device_setup()
339 		di->vsel_step = 6250;  in rk860x_device_setup()
340 		di->n_voltages = RK860X_NVOLTAGES_160;  in rk860x_device_setup()
341 		di->vol_mask = VSEL_B_NSEL_MASK;  in rk860x_device_setup()
342 		if (di->sleep_vsel_id) {  in rk860x_device_setup()
343 			di->sleep_reg = RK860X_VSEL1_B;  in rk860x_device_setup()
344 			di->vol_reg = RK860X_VSEL0_B;  in rk860x_device_setup()
345 			di->mode_reg = RK860X_VSEL0_A;  in rk860x_device_setup()
346 			di->en_reg = RK860X_VSEL0_A;  in rk860x_device_setup()
347 			di->sleep_en_reg = RK860X_VSEL1_A;  in rk860x_device_setup()
349 			di->sleep_reg = RK860X_VSEL0_B;  in rk860x_device_setup()
350 			di->vol_reg = RK860X_VSEL1_B;  in rk860x_device_setup()
351 			di->mode_reg = RK860X_VSEL1_A;  in rk860x_device_setup()
352 			di->en_reg = RK860X_VSEL1_A;  in rk860x_device_setup()
353 			di->sleep_en_reg = RK860X_VSEL0_A;  in rk860x_device_setup()
357 		dev_err(di->dev, "Chip ID %d not supported!\n", di->chip_id);  in rk860x_device_setup()
358 		return -EINVAL;  in rk860x_device_setup()
361 	di->mode_mask = VSEL_MODE;  in rk860x_device_setup()
362 	di->slew_reg = RK860X_CONTROL;  in rk860x_device_setup()
363 	di->slew_mask = CTL_SLEW_MASK;  in rk860x_device_setup()
364 	di->slew_shift = CTL_SLEW_SHIFT;  in rk860x_device_setup()
366 	if (pdata->limit_volt) {  in rk860x_device_setup()
367 		if (pdata->limit_volt < di->vsel_min ||  in rk860x_device_setup()
368 		    pdata->limit_volt > 1500000)  in rk860x_device_setup()
369 			pdata->limit_volt = 1500000;  in rk860x_device_setup()
370 		val = (pdata->limit_volt - di->vsel_min) / di->vsel_step;  in rk860x_device_setup()
371 		ret = regmap_write(di->regmap, RK860X_MAX_SET, val);  in rk860x_device_setup()
373 			dev_err(di->dev, "Failed to set limit voltage!\n");  in rk860x_device_setup()
384 	struct regulator_desc *rdesc = &di->desc;  in rk860x_regulator_register()
386 	rdesc->name = "rk860x-reg";  in rk860x_regulator_register()
387 	rdesc->supply_name = "vin";  in rk860x_regulator_register()
388 	rdesc->ops = &rk860x_regulator_ops;  in rk860x_regulator_register()
389 	rdesc->type = REGULATOR_VOLTAGE;  in rk860x_regulator_register()
390 	rdesc->n_voltages = di->n_voltages;  in rk860x_regulator_register()
391 	rdesc->enable_reg = di->en_reg;  in rk860x_regulator_register()
392 	rdesc->enable_mask = VSEL_BUCK_EN;  in rk860x_regulator_register()
393 	rdesc->min_uV = di->vsel_min;  in rk860x_regulator_register()
394 	rdesc->uV_step = di->vsel_step;  in rk860x_regulator_register()
395 	rdesc->vsel_reg = di->vol_reg;  in rk860x_regulator_register()
396 	rdesc->vsel_mask = di->vol_mask;  in rk860x_regulator_register()
397 	rdesc->owner = THIS_MODULE;  in rk860x_regulator_register()
398 	rdesc->enable_time = 400;  in rk860x_regulator_register()
400 	di->rdev = devm_regulator_register(di->dev, &di->desc, config);  in rk860x_regulator_register()
401 	return PTR_ERR_OR_ZERO(di->rdev);  in rk860x_regulator_register()
421 	pdata->regulator = of_get_regulator_init_data(dev, np, desc);  in rk860x_parse_dt()
422 	pdata->regulator->constraints.initial_state = PM_SUSPEND_MEM;  in rk860x_parse_dt()
424 	if (!(of_property_read_u32(np, "limit-microvolt", &limit_volt)))  in rk860x_parse_dt()
425 		pdata->limit_volt = limit_volt;  in rk860x_parse_dt()
427 	ret = of_property_read_u32(np, "rockchip,suspend-voltage-selector",  in rk860x_parse_dt()
430 		pdata->sleep_vsel_id = tmp;  in rk860x_parse_dt()
432 	if (pdata->sleep_vsel_id)  in rk860x_parse_dt()
437 	pdata->vsel_gpio = devm_gpiod_get_index_optional(dev, "vsel", 0, flag);  in rk860x_parse_dt()
438 	if (IS_ERR(pdata->vsel_gpio)) {  in rk860x_parse_dt()
439 		ret = PTR_ERR(pdata->vsel_gpio);  in rk860x_parse_dt()
441 		pdata->vsel_gpio = NULL;  in rk860x_parse_dt()
472 	struct device_node *np = client->dev.of_node;  in rk860x_regulator_probe()
479 	di = devm_kzalloc(&client->dev, sizeof(*di), GFP_KERNEL);  in rk860x_regulator_probe()
481 		return -ENOMEM;  in rk860x_regulator_probe()
483 	di->desc.of_map_mode = rk860x_map_mode;  in rk860x_regulator_probe()
485 	pdata = dev_get_platdata(&client->dev);  in rk860x_regulator_probe()
487 		pdata = rk860x_parse_dt(&client->dev, np, &di->desc);  in rk860x_regulator_probe()
489 	if (!pdata || !pdata->regulator) {  in rk860x_regulator_probe()
490 		dev_err(&client->dev, "Platform data not found!\n");  in rk860x_regulator_probe()
491 		return -ENODEV;  in rk860x_regulator_probe()
494 	di->vsel_gpio = pdata->vsel_gpio;  in rk860x_regulator_probe()
495 	di->sleep_vsel_id = pdata->sleep_vsel_id;  in rk860x_regulator_probe()
497 	di->regulator = pdata->regulator;  in rk860x_regulator_probe()
498 	if (client->dev.of_node) {  in rk860x_regulator_probe()
499 		di->chip_id =  in rk860x_regulator_probe()
500 			(unsigned long)of_device_get_match_data(&client->dev);  in rk860x_regulator_probe()
503 		if (!di->regulator->constraints.ramp_delay) {  in rk860x_regulator_probe()
504 			int slew_idx = (pdata->slew_rate & 0x7)  in rk860x_regulator_probe()
505 						? pdata->slew_rate : 0;  in rk860x_regulator_probe()
507 			di->regulator->constraints.ramp_delay =  in rk860x_regulator_probe()
510 		di->chip_id = id->driver_data;  in rk860x_regulator_probe()
513 	di->regmap = devm_regmap_init_i2c(client, &rk860x_regmap_config);  in rk860x_regulator_probe()
514 	if (IS_ERR(di->regmap)) {  in rk860x_regulator_probe()
515 		dev_err(&client->dev, "Failed to allocate regmap!\n");  in rk860x_regulator_probe()
516 		return PTR_ERR(di->regmap);  in rk860x_regulator_probe()
518 	di->dev = &client->dev;  in rk860x_regulator_probe()
521 	ret = regmap_read(di->regmap, RK860X_ID1, &val);  in rk860x_regulator_probe()
523 		dev_err(&client->dev, "Failed to get chip ID!\n");  in rk860x_regulator_probe()
527 	switch (di->chip_id) {  in rk860x_regulator_probe()
531 			dev_err(&client->dev, "Failed to match chip ID!\n");  in rk860x_regulator_probe()
532 			return -EINVAL;  in rk860x_regulator_probe()
538 			dev_err(&client->dev, "Failed to match chip ID!\n");  in rk860x_regulator_probe()
539 			return -EINVAL;  in rk860x_regulator_probe()
543 		return -EINVAL;  in rk860x_regulator_probe()
549 		dev_err(&client->dev, "Failed to setup device!\n");  in rk860x_regulator_probe()
553 	config.dev = di->dev;  in rk860x_regulator_probe()
554 	config.init_data = di->regulator;  in rk860x_regulator_probe()
555 	config.regmap = di->regmap;  in rk860x_regulator_probe()
561 		dev_err(&client->dev, "Failed to register regulator!\n");  in rk860x_regulator_probe()
573 	dev_info(di->dev, "rk860..... reset\n");  in rk860x_regulator_shutdown()
575 	ret = regmap_update_bits(di->regmap, di->slew_reg,  in rk860x_regulator_shutdown()
579 		dev_err(di->dev, "force rk860x_reset error! ret=%d\n", ret);  in rk860x_regulator_shutdown()
581 		dev_info(di->dev, "force rk860x_reset ok!\n");  in rk860x_regulator_shutdown()
595 		.name = "rk860-regulator",
605 MODULE_AUTHOR("Elaine Zhang <zhangqing@rock-chips.com>");
606 MODULE_DESCRIPTION("rk860x regulator driver");