1 // SPDX-License-Identifier: GPL-2.0
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.
49 		.n_voltages = (max - min)/step + 1,			\
174 		ret = -EINVAL;  in mt6397_regulator_set_mode()
178 	dev_dbg(&rdev->dev, "mt6397 buck set_mode %#x, %#x, %#x, %#x\n",  in mt6397_regulator_set_mode()
179 		info->modeset_reg, info->modeset_mask,  in mt6397_regulator_set_mode()
180 		info->modeset_shift, val);  in mt6397_regulator_set_mode()
182 	val <<= info->modeset_shift;  in mt6397_regulator_set_mode()
183 	ret = regmap_update_bits(rdev->regmap, info->modeset_reg,  in mt6397_regulator_set_mode()
184 				 info->modeset_mask, val);  in mt6397_regulator_set_mode()
187 		dev_err(&rdev->dev,  in mt6397_regulator_set_mode()
188 			"Failed to set mt6397 buck mode: %d\n", ret);  in mt6397_regulator_set_mode()
200 	ret = regmap_read(rdev->regmap, info->modeset_reg, &regval);  in mt6397_regulator_get_mode()
202 		dev_err(&rdev->dev,  in mt6397_regulator_get_mode()
203 			"Failed to get mt6397 buck mode: %d\n", ret);  in mt6397_regulator_get_mode()
207 	switch ((regval & info->modeset_mask) >> info->modeset_shift) {  in mt6397_regulator_get_mode()
213 		return -EINVAL;  in mt6397_regulator_get_mode()
223 	ret = regmap_read(rdev->regmap, info->desc.enable_reg, &regval);  in mt6397_get_status()
225 		dev_err(&rdev->dev, "Failed to get enable reg: %d\n", ret);  in mt6397_get_status()
229 	return (regval & info->qi) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF;  in mt6397_get_status()
324 	struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);  in mt6397_set_buck_vosel_reg()
330 			if (regmap_read(mt6397->regmap,  in mt6397_set_buck_vosel_reg()
333 				dev_err(&pdev->dev,  in mt6397_set_buck_vosel_reg()
334 					"Failed to read buck ctrl\n");  in mt6397_set_buck_vosel_reg()
335 				return -EIO;  in mt6397_set_buck_vosel_reg()
350 	struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);  in mt6397_regulator_probe()
356 	/* Query buck controller to select activated voltage register part */  in mt6397_regulator_probe()
358 		return -EIO;  in mt6397_regulator_probe()
361 	if (regmap_read(mt6397->regmap, MT6397_CID, &reg_value) < 0) {  in mt6397_regulator_probe()
362 		dev_err(&pdev->dev, "Failed to read Chip ID\n");  in mt6397_regulator_probe()
363 		return -EIO;  in mt6397_regulator_probe()
365 	dev_info(&pdev->dev, "Chip ID = 0x%x\n", reg_value);  in mt6397_regulator_probe()
378 		config.dev = &pdev->dev;  in mt6397_regulator_probe()
380 		config.regmap = mt6397->regmap;  in mt6397_regulator_probe()
381 		rdev = devm_regulator_register(&pdev->dev,  in mt6397_regulator_probe()
384 			dev_err(&pdev->dev, "failed to register %s\n",  in mt6397_regulator_probe()
394 	{"mt6397-regulator", 0},
400 	{ .compatible = "mediatek,mt6397-regulator", },
407 		.name = "mt6397-regulator",