Linux Audio

Check our new training course

Loading...
Note: File does not exist in v3.5.6.
  1// SPDX-License-Identifier: GPL-2.0
  2//
  3// Copyright (c) 2019 MediaTek Inc.
  4
  5#include <linux/mfd/mt6358/registers.h>
  6#include <linux/mfd/mt6397/core.h>
  7#include <linux/module.h>
  8#include <linux/of.h>
  9#include <linux/platform_device.h>
 10#include <linux/regmap.h>
 11#include <linux/regulator/driver.h>
 12#include <linux/regulator/machine.h>
 13#include <linux/regulator/mt6358-regulator.h>
 14#include <linux/regulator/of_regulator.h>
 15
 16#define MT6358_BUCK_MODE_AUTO	0
 17#define MT6358_BUCK_MODE_FORCE_PWM	1
 18
 19/*
 20 * MT6358 regulators' information
 21 *
 22 * @desc: standard fields of regulator description.
 23 * @qi: Mask for query enable signal status of regulators
 24 */
 25struct mt6358_regulator_info {
 26	struct regulator_desc desc;
 27	u32 status_reg;
 28	u32 qi;
 29	const u32 *index_table;
 30	unsigned int n_table;
 31	u32 vsel_shift;
 32	u32 da_vsel_reg;
 33	u32 da_vsel_mask;
 34	u32 da_vsel_shift;
 35	u32 modeset_reg;
 36	u32 modeset_mask;
 37	u32 modeset_shift;
 38};
 39
 40#define MT6358_BUCK(match, vreg, min, max, step,		\
 41	volt_ranges, vosel_mask, _da_vsel_reg, _da_vsel_mask,	\
 42	_da_vsel_shift, _modeset_reg, _modeset_shift)		\
 43[MT6358_ID_##vreg] = {	\
 44	.desc = {	\
 45		.name = #vreg,	\
 46		.of_match = of_match_ptr(match),	\
 47		.ops = &mt6358_volt_range_ops,	\
 48		.type = REGULATOR_VOLTAGE,	\
 49		.id = MT6358_ID_##vreg,		\
 50		.owner = THIS_MODULE,		\
 51		.n_voltages = ((max) - (min)) / (step) + 1,	\
 52		.linear_ranges = volt_ranges,		\
 53		.n_linear_ranges = ARRAY_SIZE(volt_ranges),	\
 54		.vsel_reg = MT6358_BUCK_##vreg##_ELR0,	\
 55		.vsel_mask = vosel_mask,	\
 56		.enable_reg = MT6358_BUCK_##vreg##_CON0,	\
 57		.enable_mask = BIT(0),	\
 58		.of_map_mode = mt6358_map_mode,	\
 59	},	\
 60	.status_reg = MT6358_BUCK_##vreg##_DBG1,	\
 61	.qi = BIT(0),	\
 62	.da_vsel_reg = _da_vsel_reg,	\
 63	.da_vsel_mask = _da_vsel_mask,	\
 64	.da_vsel_shift = _da_vsel_shift,	\
 65	.modeset_reg = _modeset_reg,	\
 66	.modeset_mask = BIT(_modeset_shift),	\
 67	.modeset_shift = _modeset_shift	\
 68}
 69
 70#define MT6358_LDO(match, vreg, ldo_volt_table,	\
 71	ldo_index_table, enreg, enbit, vosel,	\
 72	vosel_mask, vosel_shift)	\
 73[MT6358_ID_##vreg] = {	\
 74	.desc = {	\
 75		.name = #vreg,	\
 76		.of_match = of_match_ptr(match),	\
 77		.ops = &mt6358_volt_table_ops,	\
 78		.type = REGULATOR_VOLTAGE,	\
 79		.id = MT6358_ID_##vreg,	\
 80		.owner = THIS_MODULE,	\
 81		.n_voltages = ARRAY_SIZE(ldo_volt_table),	\
 82		.volt_table = ldo_volt_table,	\
 83		.vsel_reg = vosel,	\
 84		.vsel_mask = vosel_mask,	\
 85		.enable_reg = enreg,	\
 86		.enable_mask = BIT(enbit),	\
 87	},	\
 88	.status_reg = MT6358_LDO_##vreg##_CON1,	\
 89	.qi = BIT(15),	\
 90	.index_table = ldo_index_table,	\
 91	.n_table = ARRAY_SIZE(ldo_index_table),	\
 92	.vsel_shift = vosel_shift,	\
 93}
 94
 95#define MT6358_LDO1(match, vreg, min, max, step,	\
 96	volt_ranges, _da_vsel_reg, _da_vsel_mask,	\
 97	_da_vsel_shift, vosel, vosel_mask)	\
 98[MT6358_ID_##vreg] = {	\
 99	.desc = {	\
100		.name = #vreg,	\
101		.of_match = of_match_ptr(match),	\
102		.ops = &mt6358_volt_range_ops,	\
103		.type = REGULATOR_VOLTAGE,	\
104		.id = MT6358_ID_##vreg,	\
105		.owner = THIS_MODULE,	\
106		.n_voltages = ((max) - (min)) / (step) + 1,	\
107		.linear_ranges = volt_ranges,	\
108		.n_linear_ranges = ARRAY_SIZE(volt_ranges),	\
109		.vsel_reg = vosel,	\
110		.vsel_mask = vosel_mask,	\
111		.enable_reg = MT6358_LDO_##vreg##_CON0,	\
112		.enable_mask = BIT(0),	\
113	},	\
114	.da_vsel_reg = _da_vsel_reg,	\
115	.da_vsel_mask = _da_vsel_mask,	\
116	.da_vsel_shift = _da_vsel_shift,	\
117	.status_reg = MT6358_LDO_##vreg##_DBG1,	\
118	.qi = BIT(0),	\
119}
120
121#define MT6358_REG_FIXED(match, vreg,	\
122	enreg, enbit, volt)	\
123[MT6358_ID_##vreg] = {	\
124	.desc = {	\
125		.name = #vreg,	\
126		.of_match = of_match_ptr(match),	\
127		.ops = &mt6358_volt_fixed_ops,	\
128		.type = REGULATOR_VOLTAGE,	\
129		.id = MT6358_ID_##vreg,	\
130		.owner = THIS_MODULE,	\
131		.n_voltages = 1,	\
132		.enable_reg = enreg,	\
133		.enable_mask = BIT(enbit),	\
134		.min_uV = volt,	\
135	},	\
136	.status_reg = MT6358_LDO_##vreg##_CON1,	\
137	.qi = BIT(15),							\
138}
139
140static const struct linear_range buck_volt_range1[] = {
141	REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 6250),
142};
143
144static const struct linear_range buck_volt_range2[] = {
145	REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 12500),
146};
147
148static const struct linear_range buck_volt_range3[] = {
149	REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000),
150};
151
152static const struct linear_range buck_volt_range4[] = {
153	REGULATOR_LINEAR_RANGE(1000000, 0, 0x7f, 12500),
154};
155
156static const u32 vdram2_voltages[] = {
157	600000, 1800000,
158};
159
160static const u32 vsim_voltages[] = {
161	1700000, 1800000, 2700000, 3000000, 3100000,
162};
163
164static const u32 vibr_voltages[] = {
165	1200000, 1300000, 1500000, 1800000,
166	2000000, 2800000, 3000000, 3300000,
167};
168
169static const u32 vusb_voltages[] = {
170	3000000, 3100000,
171};
172
173static const u32 vcamd_voltages[] = {
174	900000, 1000000, 1100000, 1200000,
175	1300000, 1500000, 1800000,
176};
177
178static const u32 vefuse_voltages[] = {
179	1700000, 1800000, 1900000,
180};
181
182static const u32 vmch_vemc_voltages[] = {
183	2900000, 3000000, 3300000,
184};
185
186static const u32 vcama_voltages[] = {
187	1800000, 2500000, 2700000,
188	2800000, 2900000, 3000000,
189};
190
191static const u32 vcn33_bt_wifi_voltages[] = {
192	3300000, 3400000, 3500000,
193};
194
195static const u32 vmc_voltages[] = {
196	1800000, 2900000, 3000000, 3300000,
197};
198
199static const u32 vldo28_voltages[] = {
200	2800000, 3000000,
201};
202
203static const u32 vdram2_idx[] = {
204	0, 12,
205};
206
207static const u32 vsim_idx[] = {
208	3, 4, 8, 11, 12,
209};
210
211static const u32 vibr_idx[] = {
212	0, 1, 2, 4, 5, 9, 11, 13,
213};
214
215static const u32 vusb_idx[] = {
216	3, 4,
217};
218
219static const u32 vcamd_idx[] = {
220	3, 4, 5, 6, 7, 9, 12,
221};
222
223static const u32 vefuse_idx[] = {
224	11, 12, 13,
225};
226
227static const u32 vmch_vemc_idx[] = {
228	2, 3, 5,
229};
230
231static const u32 vcama_idx[] = {
232	0, 7, 9, 10, 11, 12,
233};
234
235static const u32 vcn33_bt_wifi_idx[] = {
236	1, 2, 3,
237};
238
239static const u32 vmc_idx[] = {
240	4, 10, 11, 13,
241};
242
243static const u32 vldo28_idx[] = {
244	1, 3,
245};
246
247static unsigned int mt6358_map_mode(unsigned int mode)
248{
249	return mode == MT6358_BUCK_MODE_AUTO ?
250		REGULATOR_MODE_NORMAL : REGULATOR_MODE_FAST;
251}
252
253static int mt6358_set_voltage_sel(struct regulator_dev *rdev,
254				  unsigned int selector)
255{
256	int idx, ret;
257	const u32 *pvol;
258	struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
259
260	pvol = info->index_table;
261
262	idx = pvol[selector];
263	ret = regmap_update_bits(rdev->regmap, info->desc.vsel_reg,
264				 info->desc.vsel_mask,
265				 idx << info->vsel_shift);
266
267	return ret;
268}
269
270static int mt6358_get_voltage_sel(struct regulator_dev *rdev)
271{
272	int idx, ret;
273	u32 selector;
274	struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
275	const u32 *pvol;
276
277	ret = regmap_read(rdev->regmap, info->desc.vsel_reg, &selector);
278	if (ret != 0) {
279		dev_info(&rdev->dev,
280			 "Failed to get mt6358 %s vsel reg: %d\n",
281			 info->desc.name, ret);
282		return ret;
283	}
284
285	selector = (selector & info->desc.vsel_mask) >> info->vsel_shift;
286	pvol = info->index_table;
287	for (idx = 0; idx < info->desc.n_voltages; idx++) {
288		if (pvol[idx] == selector)
289			return idx;
290	}
291
292	return -EINVAL;
293}
294
295static int mt6358_get_buck_voltage_sel(struct regulator_dev *rdev)
296{
297	int ret, regval;
298	struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
299
300	ret = regmap_read(rdev->regmap, info->da_vsel_reg, &regval);
301	if (ret != 0) {
302		dev_err(&rdev->dev,
303			"Failed to get mt6358 Buck %s vsel reg: %d\n",
304			info->desc.name, ret);
305		return ret;
306	}
307
308	ret = (regval >> info->da_vsel_shift) & info->da_vsel_mask;
309
310	return ret;
311}
312
313static int mt6358_get_status(struct regulator_dev *rdev)
314{
315	int ret;
316	u32 regval;
317	struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
318
319	ret = regmap_read(rdev->regmap, info->status_reg, &regval);
320	if (ret != 0) {
321		dev_info(&rdev->dev, "Failed to get enable reg: %d\n", ret);
322		return ret;
323	}
324
325	return (regval & info->qi) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF;
326}
327
328static int mt6358_regulator_set_mode(struct regulator_dev *rdev,
329				     unsigned int mode)
330{
331	struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
332	int val;
333
334	switch (mode) {
335	case REGULATOR_MODE_FAST:
336		val = MT6358_BUCK_MODE_FORCE_PWM;
337		break;
338	case REGULATOR_MODE_NORMAL:
339		val = MT6358_BUCK_MODE_AUTO;
340		break;
341	default:
342		return -EINVAL;
343	}
344
345	dev_dbg(&rdev->dev, "mt6358 buck set_mode %#x, %#x, %#x, %#x\n",
346		info->modeset_reg, info->modeset_mask,
347		info->modeset_shift, val);
348
349	val <<= info->modeset_shift;
350
351	return regmap_update_bits(rdev->regmap, info->modeset_reg,
352				  info->modeset_mask, val);
353}
354
355static unsigned int mt6358_regulator_get_mode(struct regulator_dev *rdev)
356{
357	struct mt6358_regulator_info *info = rdev_get_drvdata(rdev);
358	int ret, regval;
359
360	ret = regmap_read(rdev->regmap, info->modeset_reg, &regval);
361	if (ret != 0) {
362		dev_err(&rdev->dev,
363			"Failed to get mt6358 buck mode: %d\n", ret);
364		return ret;
365	}
366
367	switch ((regval & info->modeset_mask) >> info->modeset_shift) {
368	case MT6358_BUCK_MODE_AUTO:
369		return REGULATOR_MODE_NORMAL;
370	case MT6358_BUCK_MODE_FORCE_PWM:
371		return REGULATOR_MODE_FAST;
372	default:
373		return -EINVAL;
374	}
375}
376
377static const struct regulator_ops mt6358_volt_range_ops = {
378	.list_voltage = regulator_list_voltage_linear_range,
379	.map_voltage = regulator_map_voltage_linear_range,
380	.set_voltage_sel = regulator_set_voltage_sel_regmap,
381	.get_voltage_sel = mt6358_get_buck_voltage_sel,
382	.set_voltage_time_sel = regulator_set_voltage_time_sel,
383	.enable = regulator_enable_regmap,
384	.disable = regulator_disable_regmap,
385	.is_enabled = regulator_is_enabled_regmap,
386	.get_status = mt6358_get_status,
387	.set_mode = mt6358_regulator_set_mode,
388	.get_mode = mt6358_regulator_get_mode,
389};
390
391static const struct regulator_ops mt6358_volt_table_ops = {
392	.list_voltage = regulator_list_voltage_table,
393	.map_voltage = regulator_map_voltage_iterate,
394	.set_voltage_sel = mt6358_set_voltage_sel,
395	.get_voltage_sel = mt6358_get_voltage_sel,
396	.set_voltage_time_sel = regulator_set_voltage_time_sel,
397	.enable = regulator_enable_regmap,
398	.disable = regulator_disable_regmap,
399	.is_enabled = regulator_is_enabled_regmap,
400	.get_status = mt6358_get_status,
401};
402
403static const struct regulator_ops mt6358_volt_fixed_ops = {
404	.list_voltage = regulator_list_voltage_linear,
405	.enable = regulator_enable_regmap,
406	.disable = regulator_disable_regmap,
407	.is_enabled = regulator_is_enabled_regmap,
408	.get_status = mt6358_get_status,
409};
410
411/* The array is indexed by id(MT6358_ID_XXX) */
412static struct mt6358_regulator_info mt6358_regulators[] = {
413	MT6358_BUCK("buck_vdram1", VDRAM1, 500000, 2087500, 12500,
414		    buck_volt_range2, 0x7f, MT6358_BUCK_VDRAM1_DBG0, 0x7f,
415		    0, MT6358_VDRAM1_ANA_CON0, 8),
416	MT6358_BUCK("buck_vcore", VCORE, 500000, 1293750, 6250,
417		    buck_volt_range1, 0x7f, MT6358_BUCK_VCORE_DBG0, 0x7f,
418		    0, MT6358_VCORE_VGPU_ANA_CON0, 1),
419	MT6358_BUCK("buck_vpa", VPA, 500000, 3650000, 50000,
420		    buck_volt_range3, 0x3f, MT6358_BUCK_VPA_DBG0, 0x3f, 0,
421		    MT6358_VPA_ANA_CON0, 3),
422	MT6358_BUCK("buck_vproc11", VPROC11, 500000, 1293750, 6250,
423		    buck_volt_range1, 0x7f, MT6358_BUCK_VPROC11_DBG0, 0x7f,
424		    0, MT6358_VPROC_ANA_CON0, 1),
425	MT6358_BUCK("buck_vproc12", VPROC12, 500000, 1293750, 6250,
426		    buck_volt_range1, 0x7f, MT6358_BUCK_VPROC12_DBG0, 0x7f,
427		    0, MT6358_VPROC_ANA_CON0, 2),
428	MT6358_BUCK("buck_vgpu", VGPU, 500000, 1293750, 6250,
429		    buck_volt_range1, 0x7f, MT6358_BUCK_VGPU_ELR0, 0x7f, 0,
430		    MT6358_VCORE_VGPU_ANA_CON0, 2),
431	MT6358_BUCK("buck_vs2", VS2, 500000, 2087500, 12500,
432		    buck_volt_range2, 0x7f, MT6358_BUCK_VS2_DBG0, 0x7f, 0,
433		    MT6358_VS2_ANA_CON0, 8),
434	MT6358_BUCK("buck_vmodem", VMODEM, 500000, 1293750, 6250,
435		    buck_volt_range1, 0x7f, MT6358_BUCK_VMODEM_DBG0, 0x7f,
436		    0, MT6358_VMODEM_ANA_CON0, 8),
437	MT6358_BUCK("buck_vs1", VS1, 1000000, 2587500, 12500,
438		    buck_volt_range4, 0x7f, MT6358_BUCK_VS1_DBG0, 0x7f, 0,
439		    MT6358_VS1_ANA_CON0, 8),
440	MT6358_REG_FIXED("ldo_vrf12", VRF12,
441			 MT6358_LDO_VRF12_CON0, 0, 1200000),
442	MT6358_REG_FIXED("ldo_vio18", VIO18,
443			 MT6358_LDO_VIO18_CON0, 0, 1800000),
444	MT6358_REG_FIXED("ldo_vcamio", VCAMIO,
445			 MT6358_LDO_VCAMIO_CON0, 0, 1800000),
446	MT6358_REG_FIXED("ldo_vcn18", VCN18, MT6358_LDO_VCN18_CON0, 0, 1800000),
447	MT6358_REG_FIXED("ldo_vfe28", VFE28, MT6358_LDO_VFE28_CON0, 0, 2800000),
448	MT6358_REG_FIXED("ldo_vcn28", VCN28, MT6358_LDO_VCN28_CON0, 0, 2800000),
449	MT6358_REG_FIXED("ldo_vxo22", VXO22, MT6358_LDO_VXO22_CON0, 0, 2200000),
450	MT6358_REG_FIXED("ldo_vaux18", VAUX18,
451			 MT6358_LDO_VAUX18_CON0, 0, 1800000),
452	MT6358_REG_FIXED("ldo_vbif28", VBIF28,
453			 MT6358_LDO_VBIF28_CON0, 0, 2800000),
454	MT6358_REG_FIXED("ldo_vio28", VIO28, MT6358_LDO_VIO28_CON0, 0, 2800000),
455	MT6358_REG_FIXED("ldo_va12", VA12, MT6358_LDO_VA12_CON0, 0, 1200000),
456	MT6358_REG_FIXED("ldo_vrf18", VRF18, MT6358_LDO_VRF18_CON0, 0, 1800000),
457	MT6358_REG_FIXED("ldo_vaud28", VAUD28,
458			 MT6358_LDO_VAUD28_CON0, 0, 2800000),
459	MT6358_LDO("ldo_vdram2", VDRAM2, vdram2_voltages, vdram2_idx,
460		   MT6358_LDO_VDRAM2_CON0, 0, MT6358_LDO_VDRAM2_ELR0, 0x10, 0),
461	MT6358_LDO("ldo_vsim1", VSIM1, vsim_voltages, vsim_idx,
462		   MT6358_LDO_VSIM1_CON0, 0, MT6358_VSIM1_ANA_CON0, 0xf00, 8),
463	MT6358_LDO("ldo_vibr", VIBR, vibr_voltages, vibr_idx,
464		   MT6358_LDO_VIBR_CON0, 0, MT6358_VIBR_ANA_CON0, 0xf00, 8),
465	MT6358_LDO("ldo_vusb", VUSB, vusb_voltages, vusb_idx,
466		   MT6358_LDO_VUSB_CON0_0, 0, MT6358_VUSB_ANA_CON0, 0x700, 8),
467	MT6358_LDO("ldo_vcamd", VCAMD, vcamd_voltages, vcamd_idx,
468		   MT6358_LDO_VCAMD_CON0, 0, MT6358_VCAMD_ANA_CON0, 0xf00, 8),
469	MT6358_LDO("ldo_vefuse", VEFUSE, vefuse_voltages, vefuse_idx,
470		   MT6358_LDO_VEFUSE_CON0, 0, MT6358_VEFUSE_ANA_CON0, 0xf00, 8),
471	MT6358_LDO("ldo_vmch", VMCH, vmch_vemc_voltages, vmch_vemc_idx,
472		   MT6358_LDO_VMCH_CON0, 0, MT6358_VMCH_ANA_CON0, 0x700, 8),
473	MT6358_LDO("ldo_vcama1", VCAMA1, vcama_voltages, vcama_idx,
474		   MT6358_LDO_VCAMA1_CON0, 0, MT6358_VCAMA1_ANA_CON0, 0xf00, 8),
475	MT6358_LDO("ldo_vemc", VEMC, vmch_vemc_voltages, vmch_vemc_idx,
476		   MT6358_LDO_VEMC_CON0, 0, MT6358_VEMC_ANA_CON0, 0x700, 8),
477	MT6358_LDO("ldo_vcn33_bt", VCN33_BT, vcn33_bt_wifi_voltages,
478		   vcn33_bt_wifi_idx, MT6358_LDO_VCN33_CON0_0,
479		   0, MT6358_VCN33_ANA_CON0, 0x300, 8),
480	MT6358_LDO("ldo_vcn33_wifi", VCN33_WIFI, vcn33_bt_wifi_voltages,
481		   vcn33_bt_wifi_idx, MT6358_LDO_VCN33_CON0_1,
482		   0, MT6358_VCN33_ANA_CON0, 0x300, 8),
483	MT6358_LDO("ldo_vcama2", VCAMA2, vcama_voltages, vcama_idx,
484		   MT6358_LDO_VCAMA2_CON0, 0, MT6358_VCAMA2_ANA_CON0, 0xf00, 8),
485	MT6358_LDO("ldo_vmc", VMC, vmc_voltages, vmc_idx,
486		   MT6358_LDO_VMC_CON0, 0, MT6358_VMC_ANA_CON0, 0xf00, 8),
487	MT6358_LDO("ldo_vldo28", VLDO28, vldo28_voltages, vldo28_idx,
488		   MT6358_LDO_VLDO28_CON0_0, 0,
489		   MT6358_VLDO28_ANA_CON0, 0x300, 8),
490	MT6358_LDO("ldo_vsim2", VSIM2, vsim_voltages, vsim_idx,
491		   MT6358_LDO_VSIM2_CON0, 0, MT6358_VSIM2_ANA_CON0, 0xf00, 8),
492	MT6358_LDO1("ldo_vsram_proc11", VSRAM_PROC11, 500000, 1293750, 6250,
493		    buck_volt_range1, MT6358_LDO_VSRAM_PROC11_DBG0, 0x7f, 8,
494		    MT6358_LDO_VSRAM_CON0, 0x7f),
495	MT6358_LDO1("ldo_vsram_others", VSRAM_OTHERS, 500000, 1293750, 6250,
496		    buck_volt_range1, MT6358_LDO_VSRAM_OTHERS_DBG0, 0x7f, 8,
497		    MT6358_LDO_VSRAM_CON2, 0x7f),
498	MT6358_LDO1("ldo_vsram_gpu", VSRAM_GPU, 500000, 1293750, 6250,
499		    buck_volt_range1, MT6358_LDO_VSRAM_GPU_DBG0, 0x7f, 8,
500		    MT6358_LDO_VSRAM_CON3, 0x7f),
501	MT6358_LDO1("ldo_vsram_proc12", VSRAM_PROC12, 500000, 1293750, 6250,
502		    buck_volt_range1, MT6358_LDO_VSRAM_PROC12_DBG0, 0x7f, 8,
503		    MT6358_LDO_VSRAM_CON1, 0x7f),
504};
505
506static int mt6358_regulator_probe(struct platform_device *pdev)
507{
508	struct mt6397_chip *mt6397 = dev_get_drvdata(pdev->dev.parent);
509	struct regulator_config config = {};
510	struct regulator_dev *rdev;
511	int i;
512
513	for (i = 0; i < MT6358_MAX_REGULATOR; i++) {
514		config.dev = &pdev->dev;
515		config.driver_data = &mt6358_regulators[i];
516		config.regmap = mt6397->regmap;
517
518		rdev = devm_regulator_register(&pdev->dev,
519					       &mt6358_regulators[i].desc,
520					       &config);
521		if (IS_ERR(rdev)) {
522			dev_err(&pdev->dev, "failed to register %s\n",
523				mt6358_regulators[i].desc.name);
524			return PTR_ERR(rdev);
525		}
526	}
527
528	return 0;
529}
530
531static const struct platform_device_id mt6358_platform_ids[] = {
532	{"mt6358-regulator", 0},
533	{ /* sentinel */ },
534};
535MODULE_DEVICE_TABLE(platform, mt6358_platform_ids);
536
537static struct platform_driver mt6358_regulator_driver = {
538	.driver = {
539		.name = "mt6358-regulator",
540	},
541	.probe = mt6358_regulator_probe,
542	.id_table = mt6358_platform_ids,
543};
544
545module_platform_driver(mt6358_regulator_driver);
546
547MODULE_AUTHOR("Hsin-Hsiung Wang <hsin-hsiung.wang@mediatek.com>");
548MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6358 PMIC");
549MODULE_LICENSE("GPL");