1 // SPDX-License-Identifier: GPL-2.0
3 // Copyright (c) 2014 MediaTek Inc.
14 #include <linux/regulator/mt6397-regulator.h>
16 #include <dt-bindings/regulator/mediatek,mt6397-regulator.h>
24  * @vselctrl_reg: Register for controlling the buck control mode.
25  * @vselctrl_mask: Mask for query buck's voltage control mode.
48 		.n_voltages = (max - min)/step + 1,			\
172 		ret = -EINVAL;  in mt6397_regulator_set_mode()
176 	dev_dbg(&rdev->dev, "mt6397 buck set_mode %#x, %#x, %#x\n",  in mt6397_regulator_set_mode()
177 		info->modeset_reg, info->modeset_mask, val);  in mt6397_regulator_set_mode()
179 	val <<= ffs(info->modeset_mask) - 1;  in mt6397_regulator_set_mode()
181 	ret = regmap_update_bits(rdev->regmap, info->modeset_reg,  in mt6397_regulator_set_mode()
182 				 info->modeset_mask, val);  in mt6397_regulator_set_mode()
185 		dev_err(&rdev->dev,  in mt6397_regulator_set_mode()
186 			"Failed to set mt6397 buck mode: %d\n", ret);  in mt6397_regulator_set_mode()
198 	ret = regmap_read(rdev->regmap, info->modeset_reg, &regval);  in mt6397_regulator_get_mode()
200 		dev_err(&rdev->dev,  in mt6397_regulator_get_mode()
201 			"Failed to get mt6397 buck mode: %d\n", ret);  in mt6397_regulator_get_mode()
205 	regval &= info->modeset_mask;  in mt6397_regulator_get_mode()
206 	regval >>= ffs(info->modeset_mask) - 1;  in mt6397_regulator_get_mode()
214 		return -EINVAL;  in mt6397_regulator_get_mode()
224 	ret = regmap_read(rdev->regmap, info->desc.enable_reg, &regval);  in mt6397_get_status()
226 		dev_err(&rdev->dev, "Failed to get enable reg: %d\n", ret);  in mt6397_get_status()
230 	return (regval & info->qi) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF;  in mt6397_get_status()
325 	struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);  in mt6397_set_buck_vosel_reg()
331 			if (regmap_read(mt6397->regmap,  in mt6397_set_buck_vosel_reg()
334 				dev_err(&pdev->dev,  in mt6397_set_buck_vosel_reg()
335 					"Failed to read buck ctrl\n");  in mt6397_set_buck_vosel_reg()
336 				return -EIO;  in mt6397_set_buck_vosel_reg()
351 	struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);  in mt6397_regulator_probe()
357 	/* Query buck controller to select activated voltage register part */  in mt6397_regulator_probe()
359 		return -EIO;  in mt6397_regulator_probe()
362 	if (regmap_read(mt6397->regmap, MT6397_CID, &reg_value) < 0) {  in mt6397_regulator_probe()
363 		dev_err(&pdev->dev, "Failed to read Chip ID\n");  in mt6397_regulator_probe()
364 		return -EIO;  in mt6397_regulator_probe()
366 	dev_info(&pdev->dev, "Chip ID = 0x%x\n", reg_value);  in mt6397_regulator_probe()
379 		config.dev = &pdev->dev;  in mt6397_regulator_probe()
381 		config.regmap = mt6397->regmap;  in mt6397_regulator_probe()
382 		rdev = devm_regulator_register(&pdev->dev,  in mt6397_regulator_probe()
385 			dev_err(&pdev->dev, "failed to register %s\n",  in mt6397_regulator_probe()
395 	{"mt6397-regulator", 0},
401 	{ .compatible = "mediatek,mt6397-regulator", },
408 		.name = "mt6397-regulator",