Commit | Line | Data |
---|---|---|
dafc7cde FP |
1 | // SPDX-License-Identifier: GPL-2.0 |
2 | // | |
3 | // Copyright (c) 2022 MediaTek Inc. | |
4 | // Copyright (c) 2022 BayLibre, SAS. | |
5 | // Author: Chen Zhong <chen.zhong@mediatek.com> | |
6 | // Author: Fabien Parent <fparent@baylibre.com> | |
7 | // Author: Alexandre Mergnat <amergnat@baylibre.com> | |
8 | // | |
9 | // Based on mt6397-regulator.c | |
10 | // | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/of.h> | |
14 | #include <linux/platform_device.h> | |
15 | #include <linux/regmap.h> | |
16 | #include <linux/mfd/mt6397/core.h> | |
17 | #include <linux/mfd/mt6357/registers.h> | |
18 | #include <linux/regulator/driver.h> | |
19 | #include <linux/regulator/machine.h> | |
20 | #include <linux/regulator/mt6357-regulator.h> | |
21 | #include <linux/regulator/of_regulator.h> | |
22 | ||
23 | /* | |
24 | * MT6357 regulators' information | |
25 | * | |
26 | * @desc: standard fields of regulator description. | |
27 | * @da_vsel_reg: Monitor register for query buck's voltage. | |
28 | * @da_vsel_mask: Mask for query buck's voltage. | |
29 | */ | |
30 | struct mt6357_regulator_info { | |
31 | struct regulator_desc desc; | |
32 | u32 da_vsel_reg; | |
33 | u32 da_vsel_mask; | |
34 | }; | |
35 | ||
36 | #define MT6357_BUCK(match, vreg, min, max, step, \ | |
37 | volt_ranges, vosel_reg, vosel_mask, _da_vsel_mask) \ | |
38 | [MT6357_ID_##vreg] = { \ | |
39 | .desc = { \ | |
40 | .name = #vreg, \ | |
41 | .of_match = of_match_ptr(match), \ | |
42 | .regulators_node = "regulators", \ | |
43 | .ops = &mt6357_volt_range_ops, \ | |
44 | .type = REGULATOR_VOLTAGE, \ | |
45 | .id = MT6357_ID_##vreg, \ | |
46 | .owner = THIS_MODULE, \ | |
47 | .n_voltages = ((max) - (min)) / (step) + 1, \ | |
48 | .linear_ranges = volt_ranges, \ | |
49 | .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ | |
50 | .vsel_reg = vosel_reg, \ | |
51 | .vsel_mask = vosel_mask, \ | |
52 | .enable_reg = MT6357_BUCK_##vreg##_CON0, \ | |
53 | .enable_mask = BIT(0), \ | |
54 | }, \ | |
55 | .da_vsel_reg = MT6357_BUCK_##vreg##_DBG0, \ | |
56 | .da_vsel_mask = vosel_mask, \ | |
57 | } | |
58 | ||
59 | #define MT6357_LDO(match, vreg, ldo_volt_table, \ | |
60 | enreg, vosel, vosel_mask) \ | |
61 | [MT6357_ID_##vreg] = { \ | |
62 | .desc = { \ | |
63 | .name = #vreg, \ | |
64 | .of_match = of_match_ptr(match), \ | |
65 | .regulators_node = "regulators", \ | |
66 | .ops = &mt6357_volt_table_ops, \ | |
67 | .type = REGULATOR_VOLTAGE, \ | |
68 | .id = MT6357_ID_##vreg, \ | |
69 | .owner = THIS_MODULE, \ | |
70 | .n_voltages = ARRAY_SIZE(ldo_volt_table), \ | |
71 | .volt_table = ldo_volt_table, \ | |
72 | .vsel_reg = vosel, \ | |
73 | .vsel_mask = vosel_mask, \ | |
74 | .enable_reg = enreg, \ | |
75 | .enable_mask = BIT(0), \ | |
76 | }, \ | |
77 | } | |
78 | ||
79 | #define MT6357_LDO1(match, vreg, min, max, step, volt_ranges, \ | |
80 | enreg, vosel, vosel_mask) \ | |
81 | [MT6357_ID_##vreg] = { \ | |
82 | .desc = { \ | |
83 | .name = #vreg, \ | |
84 | .of_match = of_match_ptr(match), \ | |
85 | .regulators_node = "regulators", \ | |
86 | .ops = &mt6357_volt_range_ops, \ | |
87 | .type = REGULATOR_VOLTAGE, \ | |
88 | .id = MT6357_ID_##vreg, \ | |
89 | .owner = THIS_MODULE, \ | |
90 | .n_voltages = ((max) - (min)) / (step) + 1, \ | |
91 | .linear_ranges = volt_ranges, \ | |
92 | .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ | |
93 | .vsel_reg = vosel, \ | |
94 | .vsel_mask = vosel_mask, \ | |
95 | .enable_reg = enreg, \ | |
96 | .enable_mask = BIT(0), \ | |
97 | }, \ | |
98 | .da_vsel_reg = MT6357_LDO_##vreg##_DBG0, \ | |
99 | .da_vsel_mask = 0x7f00, \ | |
100 | } | |
101 | ||
102 | #define MT6357_REG_FIXED(match, vreg, volt) \ | |
103 | [MT6357_ID_##vreg] = { \ | |
104 | .desc = { \ | |
105 | .name = #vreg, \ | |
106 | .of_match = of_match_ptr(match), \ | |
107 | .regulators_node = "regulators", \ | |
108 | .ops = &mt6357_volt_fixed_ops, \ | |
109 | .type = REGULATOR_VOLTAGE, \ | |
110 | .id = MT6357_ID_##vreg, \ | |
111 | .owner = THIS_MODULE, \ | |
112 | .n_voltages = 1, \ | |
113 | .enable_reg = MT6357_LDO_##vreg##_CON0, \ | |
114 | .enable_mask = BIT(0), \ | |
115 | .min_uV = volt, \ | |
116 | }, \ | |
117 | } | |
118 | ||
119 | /** | |
120 | * mt6357_get_buck_voltage_sel - get_voltage_sel for regmap users | |
121 | * | |
122 | * @rdev: regulator to operate on | |
123 | * | |
124 | * Regulators that use regmap for their register I/O can set the | |
125 | * da_vsel_reg and da_vsel_mask fields in the info structure and | |
126 | * then use this as their get_voltage_vsel operation. | |
127 | */ | |
128 | static int mt6357_get_buck_voltage_sel(struct regulator_dev *rdev) | |
129 | { | |
130 | int ret, regval; | |
131 | struct mt6357_regulator_info *info = rdev_get_drvdata(rdev); | |
132 | ||
133 | ret = regmap_read(rdev->regmap, info->da_vsel_reg, ®val); | |
134 | if (ret != 0) { | |
135 | dev_err(&rdev->dev, | |
136 | "Failed to get mt6357 Buck %s vsel reg: %d\n", | |
137 | info->desc.name, ret); | |
138 | return ret; | |
139 | } | |
140 | ||
141 | regval &= info->da_vsel_mask; | |
142 | regval >>= ffs(info->da_vsel_mask) - 1; | |
143 | ||
144 | return regval; | |
145 | } | |
146 | ||
147 | static const struct regulator_ops mt6357_volt_range_ops = { | |
148 | .list_voltage = regulator_list_voltage_linear_range, | |
149 | .map_voltage = regulator_map_voltage_linear_range, | |
150 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
151 | .get_voltage_sel = mt6357_get_buck_voltage_sel, | |
152 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
153 | .enable = regulator_enable_regmap, | |
154 | .disable = regulator_disable_regmap, | |
155 | .is_enabled = regulator_is_enabled_regmap, | |
156 | }; | |
157 | ||
158 | static const struct regulator_ops mt6357_volt_table_ops = { | |
159 | .list_voltage = regulator_list_voltage_table, | |
160 | .map_voltage = regulator_map_voltage_iterate, | |
161 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
162 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
163 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
164 | .enable = regulator_enable_regmap, | |
165 | .disable = regulator_disable_regmap, | |
166 | .is_enabled = regulator_is_enabled_regmap, | |
167 | }; | |
168 | ||
169 | static const struct regulator_ops mt6357_volt_fixed_ops = { | |
170 | .list_voltage = regulator_list_voltage_linear, | |
171 | .enable = regulator_enable_regmap, | |
172 | .disable = regulator_disable_regmap, | |
173 | .is_enabled = regulator_is_enabled_regmap, | |
174 | }; | |
175 | ||
176 | static const int vxo22_voltages[] = { | |
177 | 2200000, | |
178 | 0, | |
179 | 2400000, | |
180 | }; | |
181 | ||
182 | static const int vefuse_voltages[] = { | |
183 | 1200000, | |
184 | 1300000, | |
185 | 1500000, | |
186 | 0, | |
187 | 1800000, | |
188 | 0, | |
189 | 0, | |
190 | 0, | |
191 | 0, | |
192 | 2800000, | |
193 | 2900000, | |
194 | 3000000, | |
195 | 0, | |
196 | 3300000, | |
197 | }; | |
198 | ||
199 | static const int vcn33_voltages[] = { | |
200 | 0, | |
201 | 3300000, | |
202 | 3400000, | |
203 | 3500000, | |
204 | }; | |
205 | ||
206 | static const int vcama_voltages[] = { | |
207 | 0, | |
208 | 0, | |
209 | 0, | |
210 | 0, | |
211 | 0, | |
212 | 0, | |
213 | 0, | |
214 | 2500000, | |
215 | 0, | |
216 | 0, | |
217 | 2800000, | |
218 | }; | |
219 | ||
220 | static const int vcamd_voltages[] = { | |
221 | 0, | |
222 | 0, | |
223 | 0, | |
224 | 0, | |
225 | 1000000, | |
226 | 1100000, | |
227 | 1200000, | |
228 | 1300000, | |
229 | 0, | |
230 | 1500000, | |
231 | 0, | |
232 | 0, | |
233 | 1800000, | |
234 | }; | |
235 | ||
236 | static const int vldo28_voltages[] = { | |
237 | 0, | |
238 | 2800000, | |
239 | 0, | |
240 | 3000000, | |
241 | }; | |
242 | ||
243 | static const int vdram_voltages[] = { | |
244 | 0, | |
245 | 1100000, | |
246 | 1200000, | |
247 | }; | |
248 | ||
249 | static const int vsim_voltages[] = { | |
250 | 0, | |
251 | 0, | |
252 | 0, | |
253 | 1700000, | |
254 | 1800000, | |
255 | 0, | |
256 | 0, | |
257 | 0, | |
258 | 2700000, | |
259 | 0, | |
260 | 0, | |
261 | 3000000, | |
262 | 3100000, | |
263 | }; | |
264 | ||
265 | static const int vibr_voltages[] = { | |
266 | 1200000, | |
267 | 1300000, | |
268 | 1500000, | |
269 | 0, | |
270 | 1800000, | |
271 | 2000000, | |
272 | 0, | |
273 | 0, | |
274 | 0, | |
275 | 2800000, | |
276 | 0, | |
277 | 3000000, | |
278 | 0, | |
279 | 3300000, | |
280 | }; | |
281 | ||
282 | static const int vmc_voltages[] = { | |
283 | 0, | |
284 | 0, | |
285 | 0, | |
286 | 0, | |
287 | 1800000, | |
288 | 0, | |
289 | 0, | |
290 | 0, | |
291 | 0, | |
292 | 0, | |
293 | 2900000, | |
294 | 3000000, | |
295 | 0, | |
296 | 3300000, | |
297 | }; | |
298 | ||
299 | static const int vmch_voltages[] = { | |
300 | 0, | |
301 | 0, | |
302 | 2900000, | |
303 | 3000000, | |
304 | 0, | |
305 | 3300000, | |
306 | }; | |
307 | ||
308 | static const int vemc_voltages[] = { | |
309 | 0, | |
310 | 0, | |
311 | 2900000, | |
312 | 3000000, | |
313 | 0, | |
314 | 3300000, | |
315 | }; | |
316 | ||
317 | static const int vusb_voltages[] = { | |
318 | 0, | |
319 | 0, | |
320 | 0, | |
321 | 3000000, | |
322 | 3100000, | |
323 | }; | |
324 | ||
325 | static const struct linear_range buck_volt_range1[] = { | |
326 | REGULATOR_LINEAR_RANGE(518750, 0, 0x7f, 6250), | |
327 | }; | |
328 | ||
329 | static const struct linear_range buck_volt_range2[] = { | |
330 | REGULATOR_LINEAR_RANGE(500000, 0, 0x7f, 6250), | |
331 | }; | |
332 | ||
333 | static const struct linear_range buck_volt_range3[] = { | |
334 | REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000), | |
335 | }; | |
336 | ||
337 | static const struct linear_range buck_volt_range4[] = { | |
338 | REGULATOR_LINEAR_RANGE(1200000, 0, 0x7f, 12500), | |
339 | }; | |
340 | ||
341 | /* The array is indexed by id(MT6357_ID_XXX) */ | |
342 | static struct mt6357_regulator_info mt6357_regulators[] = { | |
343 | /* Bucks */ | |
344 | MT6357_BUCK("buck-vcore", VCORE, 518750, 1312500, 6250, | |
345 | buck_volt_range1, MT6357_BUCK_VCORE_ELR0, 0x7f, 0x7f), | |
346 | MT6357_BUCK("buck-vproc", VPROC, 518750, 1312500, 6250, | |
347 | buck_volt_range1, MT6357_BUCK_VPROC_ELR0, 0x7f, 0x7f), | |
348 | MT6357_BUCK("buck-vmodem", VMODEM, 500000, 1293750, 6250, | |
349 | buck_volt_range2, MT6357_BUCK_VMODEM_ELR0, 0x7f, 0x7f), | |
350 | MT6357_BUCK("buck-vpa", VPA, 500000, 3650000, 50000, | |
351 | buck_volt_range3, MT6357_BUCK_VPA_CON1, 0x3f, 0x3f), | |
352 | MT6357_BUCK("buck-vs1", VS1, 1200000, 2787500, 12500, | |
353 | buck_volt_range4, MT6357_BUCK_VS1_ELR0, 0x7f, 0x7f), | |
354 | ||
355 | /* LDOs */ | |
356 | MT6357_LDO("ldo-vcama", VCAMA, vcama_voltages, | |
357 | MT6357_LDO_VCAMA_CON0, MT6357_VCAMA_ANA_CON0, 0xf00), | |
358 | MT6357_LDO("ldo-vcamd", VCAMD, vcamd_voltages, | |
359 | MT6357_LDO_VCAMD_CON0, MT6357_VCAMD_ANA_CON0, 0xf00), | |
360 | MT6357_LDO("ldo-vcn33-bt", VCN33_BT, vcn33_voltages, | |
361 | MT6357_LDO_VCN33_CON0_0, MT6357_VCN33_ANA_CON0, 0x300), | |
362 | MT6357_LDO("ldo-vcn33-wifi", VCN33_WIFI, vcn33_voltages, | |
363 | MT6357_LDO_VCN33_CON0_1, MT6357_VCN33_ANA_CON0, 0x300), | |
364 | MT6357_LDO("ldo-vdram", VDRAM, vdram_voltages, | |
365 | MT6357_LDO_VDRAM_CON0, MT6357_VDRAM_ELR_2, 0x300), | |
366 | MT6357_LDO("ldo-vefuse", VEFUSE, vefuse_voltages, | |
367 | MT6357_LDO_VEFUSE_CON0, MT6357_VEFUSE_ANA_CON0, 0xf00), | |
368 | MT6357_LDO("ldo-vemc", VEMC, vemc_voltages, | |
369 | MT6357_LDO_VEMC_CON0, MT6357_VEMC_ANA_CON0, 0x700), | |
370 | MT6357_LDO("ldo-vibr", VIBR, vibr_voltages, | |
371 | MT6357_LDO_VIBR_CON0, MT6357_VIBR_ANA_CON0, 0xf00), | |
372 | MT6357_LDO("ldo-vldo28", VLDO28, vldo28_voltages, | |
373 | MT6357_LDO_VLDO28_CON0_0, MT6357_VLDO28_ANA_CON0, 0x300), | |
374 | MT6357_LDO("ldo-vmc", VMC, vmc_voltages, | |
375 | MT6357_LDO_VMC_CON0, MT6357_VMC_ANA_CON0, 0xf00), | |
376 | MT6357_LDO("ldo-vmch", VMCH, vmch_voltages, | |
377 | MT6357_LDO_VMCH_CON0, MT6357_VMCH_ANA_CON0, 0x700), | |
378 | MT6357_LDO("ldo-vsim1", VSIM1, vsim_voltages, | |
379 | MT6357_LDO_VSIM1_CON0, MT6357_VSIM1_ANA_CON0, 0xf00), | |
380 | MT6357_LDO("ldo-vsim2", VSIM2, vsim_voltages, | |
381 | MT6357_LDO_VSIM2_CON0, MT6357_VSIM2_ANA_CON0, 0xf00), | |
382 | MT6357_LDO("ldo-vusb33", VUSB33, vusb_voltages, | |
383 | MT6357_LDO_VUSB33_CON0_0, MT6357_VUSB33_ANA_CON0, 0x700), | |
384 | MT6357_LDO("ldo-vxo22", VXO22, vxo22_voltages, | |
385 | MT6357_LDO_VXO22_CON0, MT6357_VXO22_ANA_CON0, 0x300), | |
386 | ||
387 | MT6357_LDO1("ldo-vsram-proc", VSRAM_PROC, 518750, 1312500, 6250, | |
388 | buck_volt_range1, MT6357_LDO_VSRAM_PROC_CON0, | |
389 | MT6357_LDO_VSRAM_CON0, 0x7f00), | |
390 | MT6357_LDO1("ldo-vsram-others", VSRAM_OTHERS, 518750, 1312500, 6250, | |
391 | buck_volt_range1, MT6357_LDO_VSRAM_OTHERS_CON0, | |
392 | MT6357_LDO_VSRAM_CON1, 0x7f00), | |
393 | ||
394 | MT6357_REG_FIXED("ldo-vaud28", VAUD28, 2800000), | |
395 | MT6357_REG_FIXED("ldo-vaux18", VAUX18, 1800000), | |
396 | MT6357_REG_FIXED("ldo-vcamio18", VCAMIO, 1800000), | |
397 | MT6357_REG_FIXED("ldo-vcn18", VCN18, 1800000), | |
398 | MT6357_REG_FIXED("ldo-vcn28", VCN28, 2800000), | |
399 | MT6357_REG_FIXED("ldo-vfe28", VFE28, 2800000), | |
400 | MT6357_REG_FIXED("ldo-vio18", VIO18, 1800000), | |
401 | MT6357_REG_FIXED("ldo-vio28", VIO28, 2800000), | |
402 | MT6357_REG_FIXED("ldo-vrf12", VRF12, 1200000), | |
403 | MT6357_REG_FIXED("ldo-vrf18", VRF18, 1800000), | |
404 | }; | |
405 | ||
406 | static int mt6357_regulator_probe(struct platform_device *pdev) | |
407 | { | |
408 | struct mt6397_chip *mt6357 = dev_get_drvdata(pdev->dev.parent); | |
409 | struct regulator_config config = {}; | |
410 | struct regulator_dev *rdev; | |
411 | int i; | |
412 | ||
413 | pdev->dev.of_node = pdev->dev.parent->of_node; | |
414 | ||
415 | for (i = 0; i < MT6357_MAX_REGULATOR; i++) { | |
416 | config.dev = &pdev->dev; | |
417 | config.driver_data = &mt6357_regulators[i]; | |
418 | config.regmap = mt6357->regmap; | |
419 | ||
420 | rdev = devm_regulator_register(&pdev->dev, | |
421 | &mt6357_regulators[i].desc, | |
422 | &config); | |
423 | if (IS_ERR(rdev)) { | |
424 | dev_err(&pdev->dev, "failed to register %s\n", | |
425 | mt6357_regulators[i].desc.name); | |
426 | return PTR_ERR(rdev); | |
427 | } | |
428 | } | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
433 | static const struct platform_device_id mt6357_platform_ids[] = { | |
434 | { "mt6357-regulator" }, | |
435 | { /* sentinel */ }, | |
436 | }; | |
437 | MODULE_DEVICE_TABLE(platform, mt6357_platform_ids); | |
438 | ||
439 | static struct platform_driver mt6357_regulator_driver = { | |
440 | .driver = { | |
441 | .name = "mt6357-regulator", | |
442 | }, | |
443 | .probe = mt6357_regulator_probe, | |
444 | .id_table = mt6357_platform_ids, | |
445 | }; | |
446 | ||
447 | module_platform_driver(mt6357_regulator_driver); | |
448 | ||
449 | MODULE_AUTHOR("Chen Zhong <chen.zhong@mediatek.com>"); | |
450 | MODULE_AUTHOR("Fabien Parent <fabien.parent@linaro.org>"); | |
451 | MODULE_AUTHOR("Alexandre Mergnat <amergnat@baylibre.com>"); | |
452 | MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6357 PMIC"); | |
453 | MODULE_LICENSE("GPL"); |