drivers/regulator/hi6421-regulator.c

1 // SPDX-License-Identifier: GPL-2.0
5 // Copyright (c) <2011-2014> HiSilicon Technologies Co., Ltd.
7 // Copyright (c) <2013-2014> Linaro Ltd.
22 #include <linux/mfd/hi6421-pmic.h>
25  * struct hi6421_regulator_pdata - Hi6421 regulator data of platform device
33  * struct hi6421_regulator_info - hi6421 regulator information
118  * _id - LDO id name string
119  * _match - of match name string
120  * v_table - voltage table
121  * vreg - voltage select register
122  * vmask - voltage select mask
123  * ereg - enable register
124  * emask - enable mask
125  * odelay - off/on delay time in uS
126  * ecomask - eco mode mask
127  * ecoamp - eco mode load uppler limit in uA
155  * _id - LDO id name string
156  * _match - of match name string
157  * _min_uV - minimum voltage supported in uV
158  * n_volt - number of votages available
159  * vstep - voltage increase in each linear step in uV
160  * vreg - voltage select register
161  * vmask - voltage select mask
162  * ereg - enable register
163  * emask - enable mask
164  * odelay - off/on delay time in uS
165  * ecomask - eco mode mask
166  * ecoamp - eco mode load uppler limit in uA
193 /* HI6421 LDOAUDIO is a linear voltage regulator with two 4-step ranges
195  * _id - LDO id name string
196  * _match - of match name string
197  * n_volt - number of votages available
198  * volt_ranges - array of linear_range
199  * vstep - voltage increase in each linear step in uV
200  * vreg - voltage select register
201  * vmask - voltage select mask
202  * ereg - enable register
203  * emask - enable mask
204  * odelay - off/on delay time in uS
205  * ecomask - eco mode mask
206  * ecoamp - eco mode load uppler limit in uA
235  * _id - BUCK0/1/2 id name string
236  * _match - of match name string
237  * vreg - voltage select register
238  * vmask - voltage select mask
239  * ereg - enable register
240  * emask - enable mask
241  * sleepmask - mask of sleep mode
242  * etime - enable time
243  * odelay - off/on delay time in uS
272  * _id - LDO id name string
273  * _match - of match name string
274  * v_table - voltage table
275  * vreg - voltage select register
276  * vmask - voltage select mask
277  * ereg - enable register
278  * emask - enable mask
279  * odelay - off/on delay time in uS
280  * sleepmask - mask of sleep mode
371 	pdata = dev_get_drvdata(rdev->dev.parent);  in hi6421_regulator_enable()
373 	 *  - Because when BUCK, LDO switching from off to on, it will have  in hi6421_regulator_enable()
374 	 *    a huge instantaneous current; so you can not turn on two or  in hi6421_regulator_enable()
377 	mutex_lock(&pdata->lock);  in hi6421_regulator_enable()
382 	mutex_unlock(&pdata->lock);  in hi6421_regulator_enable()
391 	regmap_read(rdev->regmap, rdev->desc->enable_reg, &reg_val);  in hi6421_regulator_ldo_get_mode()
392 	if (reg_val & info->mode_mask)  in hi6421_regulator_ldo_get_mode()
403 	regmap_read(rdev->regmap, rdev->desc->enable_reg, &reg_val);  in hi6421_regulator_buck_get_mode()
404 	if (reg_val & info->mode_mask)  in hi6421_regulator_buck_get_mode()
421 		new_mode = info->mode_mask;  in hi6421_regulator_ldo_set_mode()
424 		return -EINVAL;  in hi6421_regulator_ldo_set_mode()
428 	regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,  in hi6421_regulator_ldo_set_mode()
429 			   info->mode_mask, new_mode);  in hi6421_regulator_ldo_set_mode()
445 		new_mode = info->mode_mask;  in hi6421_regulator_buck_set_mode()
448 		return -EINVAL;  in hi6421_regulator_buck_set_mode()
452 	regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,  in hi6421_regulator_buck_set_mode()
453 			   info->mode_mask, new_mode);  in hi6421_regulator_buck_set_mode()
464 	if (load_uA > info->eco_microamp)  in hi6421_regulator_ldo_get_optimum_mode()
535 	struct hi6421_pmic *pmic = dev_get_drvdata(pdev->dev.parent);  in hi6421_regulator_probe()
542 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);  in hi6421_regulator_probe()
544 		return -ENOMEM;  in hi6421_regulator_probe()
545 	mutex_init(&pdata->lock);  in hi6421_regulator_probe()
549 		/* assign per-regulator data */  in hi6421_regulator_probe()
552 		config.dev = pdev->dev.parent;  in hi6421_regulator_probe()
554 		config.regmap = pmic->regmap;  in hi6421_regulator_probe()
556 		rdev = devm_regulator_register(&pdev->dev, &info->desc,  in hi6421_regulator_probe()
559 			dev_err(&pdev->dev, "failed to register regulator %s\n",  in hi6421_regulator_probe()
560 				info->desc.name);  in hi6421_regulator_probe()
569 	{ .name = "hi6421-regulator" },
577 		.name	= "hi6421-regulator",