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3784b6d6 RG |
1 | /* |
2 | * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/err.h> | |
22 | #include <linux/of.h> | |
23 | #include <linux/of_device.h> | |
24 | #include <linux/regulator/of_regulator.h> | |
25 | #include <linux/platform_device.h> | |
26 | #include <linux/regulator/driver.h> | |
27 | #include <linux/regulator/machine.h> | |
28 | #include <linux/regulator/pfuze100.h> | |
29 | #include <linux/i2c.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/regmap.h> | |
32 | ||
33 | #define PFUZE_NUMREGS 128 | |
34 | #define PFUZE100_VOL_OFFSET 0 | |
35 | #define PFUZE100_STANDBY_OFFSET 1 | |
36 | #define PFUZE100_MODE_OFFSET 3 | |
37 | #define PFUZE100_CONF_OFFSET 4 | |
38 | ||
39 | #define PFUZE100_DEVICEID 0x0 | |
40 | #define PFUZE100_REVID 0x3 | |
a1b6fa85 | 41 | #define PFUZE100_FABID 0x4 |
3784b6d6 RG |
42 | |
43 | #define PFUZE100_SW1ABVOL 0x20 | |
44 | #define PFUZE100_SW1CVOL 0x2e | |
45 | #define PFUZE100_SW2VOL 0x35 | |
46 | #define PFUZE100_SW3AVOL 0x3c | |
47 | #define PFUZE100_SW3BVOL 0x43 | |
48 | #define PFUZE100_SW4VOL 0x4a | |
49 | #define PFUZE100_SWBSTCON1 0x66 | |
50 | #define PFUZE100_VREFDDRCON 0x6a | |
51 | #define PFUZE100_VSNVSVOL 0x6b | |
52 | #define PFUZE100_VGEN1VOL 0x6c | |
53 | #define PFUZE100_VGEN2VOL 0x6d | |
54 | #define PFUZE100_VGEN3VOL 0x6e | |
55 | #define PFUZE100_VGEN4VOL 0x6f | |
56 | #define PFUZE100_VGEN5VOL 0x70 | |
57 | #define PFUZE100_VGEN6VOL 0x71 | |
58 | ||
e5a7a72c | 59 | enum chips { PFUZE100, PFUZE200, PFUZE3000 = 3 }; |
f2518480 | 60 | |
3784b6d6 RG |
61 | struct pfuze_regulator { |
62 | struct regulator_desc desc; | |
63 | unsigned char stby_reg; | |
64 | unsigned char stby_mask; | |
65 | }; | |
66 | ||
67 | struct pfuze_chip { | |
f2518480 | 68 | int chip_id; |
3784b6d6 RG |
69 | struct regmap *regmap; |
70 | struct device *dev; | |
71 | struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR]; | |
72 | struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR]; | |
73 | }; | |
74 | ||
75 | static const int pfuze100_swbst[] = { | |
76 | 5000000, 5050000, 5100000, 5150000, | |
77 | }; | |
78 | ||
79 | static const int pfuze100_vsnvs[] = { | |
80 | 1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000, | |
81 | }; | |
82 | ||
e5a7a72c RG |
83 | static const int pfuze3000_sw2lo[] = { |
84 | 1500000, 1550000, 1600000, 1650000, 1700000, 1750000, 1800000, 1850000, | |
85 | }; | |
86 | ||
87 | static const int pfuze3000_sw2hi[] = { | |
88 | 2500000, 2800000, 2850000, 3000000, 3100000, 3150000, 3200000, 3300000, | |
89 | }; | |
90 | ||
3784b6d6 | 91 | static const struct i2c_device_id pfuze_device_id[] = { |
f2518480 RG |
92 | {.name = "pfuze100", .driver_data = PFUZE100}, |
93 | {.name = "pfuze200", .driver_data = PFUZE200}, | |
e5a7a72c | 94 | {.name = "pfuze3000", .driver_data = PFUZE3000}, |
e6c4c337 | 95 | { } |
3784b6d6 RG |
96 | }; |
97 | MODULE_DEVICE_TABLE(i2c, pfuze_device_id); | |
98 | ||
99 | static const struct of_device_id pfuze_dt_ids[] = { | |
f2518480 RG |
100 | { .compatible = "fsl,pfuze100", .data = (void *)PFUZE100}, |
101 | { .compatible = "fsl,pfuze200", .data = (void *)PFUZE200}, | |
e5a7a72c | 102 | { .compatible = "fsl,pfuze3000", .data = (void *)PFUZE3000}, |
e6c4c337 | 103 | { } |
3784b6d6 RG |
104 | }; |
105 | MODULE_DEVICE_TABLE(of, pfuze_dt_ids); | |
106 | ||
107 | static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay) | |
108 | { | |
109 | struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev); | |
d55efa4d | 110 | int id = rdev_get_id(rdev); |
e5656669 | 111 | unsigned int ramp_bits; |
3784b6d6 RG |
112 | int ret; |
113 | ||
114 | if (id < PFUZE100_SWBST) { | |
e5656669 | 115 | ramp_delay = 12500 / ramp_delay; |
3784b6d6 | 116 | ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3); |
e5656669 AL |
117 | ret = regmap_update_bits(pfuze100->regmap, |
118 | rdev->desc->vsel_reg + 4, | |
119 | 0xc0, ramp_bits << 6); | |
3784b6d6 RG |
120 | if (ret < 0) |
121 | dev_err(pfuze100->dev, "ramp failed, err %d\n", ret); | |
122 | } else | |
123 | ret = -EACCES; | |
124 | ||
125 | return ret; | |
126 | } | |
127 | ||
128 | static struct regulator_ops pfuze100_ldo_regulator_ops = { | |
129 | .enable = regulator_enable_regmap, | |
130 | .disable = regulator_disable_regmap, | |
131 | .is_enabled = regulator_is_enabled_regmap, | |
132 | .list_voltage = regulator_list_voltage_linear, | |
133 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
134 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
135 | }; | |
136 | ||
137 | static struct regulator_ops pfuze100_fixed_regulator_ops = { | |
ab3ca774 AL |
138 | .enable = regulator_enable_regmap, |
139 | .disable = regulator_disable_regmap, | |
140 | .is_enabled = regulator_is_enabled_regmap, | |
3784b6d6 RG |
141 | .list_voltage = regulator_list_voltage_linear, |
142 | }; | |
143 | ||
144 | static struct regulator_ops pfuze100_sw_regulator_ops = { | |
145 | .list_voltage = regulator_list_voltage_linear, | |
146 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | |
147 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
148 | .set_voltage_time_sel = regulator_set_voltage_time_sel, | |
149 | .set_ramp_delay = pfuze100_set_ramp_delay, | |
150 | }; | |
151 | ||
152 | static struct regulator_ops pfuze100_swb_regulator_ops = { | |
a6dcf978 SC |
153 | .enable = regulator_enable_regmap, |
154 | .disable = regulator_disable_regmap, | |
3784b6d6 | 155 | .list_voltage = regulator_list_voltage_table, |
2e04cc41 | 156 | .map_voltage = regulator_map_voltage_ascend, |
3784b6d6 RG |
157 | .set_voltage_sel = regulator_set_voltage_sel_regmap, |
158 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | |
159 | ||
160 | }; | |
161 | ||
f2518480 RG |
162 | #define PFUZE100_FIXED_REG(_chip, _name, base, voltage) \ |
163 | [_chip ## _ ## _name] = { \ | |
3784b6d6 RG |
164 | .desc = { \ |
165 | .name = #_name, \ | |
166 | .n_voltages = 1, \ | |
167 | .ops = &pfuze100_fixed_regulator_ops, \ | |
168 | .type = REGULATOR_VOLTAGE, \ | |
f2518480 | 169 | .id = _chip ## _ ## _name, \ |
3784b6d6 RG |
170 | .owner = THIS_MODULE, \ |
171 | .min_uV = (voltage), \ | |
172 | .enable_reg = (base), \ | |
173 | .enable_mask = 0x10, \ | |
174 | }, \ | |
175 | } | |
176 | ||
f2518480 RG |
177 | #define PFUZE100_SW_REG(_chip, _name, base, min, max, step) \ |
178 | [_chip ## _ ## _name] = { \ | |
3784b6d6 RG |
179 | .desc = { \ |
180 | .name = #_name,\ | |
181 | .n_voltages = ((max) - (min)) / (step) + 1, \ | |
182 | .ops = &pfuze100_sw_regulator_ops, \ | |
183 | .type = REGULATOR_VOLTAGE, \ | |
f2518480 | 184 | .id = _chip ## _ ## _name, \ |
3784b6d6 RG |
185 | .owner = THIS_MODULE, \ |
186 | .min_uV = (min), \ | |
187 | .uV_step = (step), \ | |
188 | .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ | |
189 | .vsel_mask = 0x3f, \ | |
190 | }, \ | |
191 | .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ | |
192 | .stby_mask = 0x3f, \ | |
193 | } | |
194 | ||
f2518480 RG |
195 | #define PFUZE100_SWB_REG(_chip, _name, base, mask, voltages) \ |
196 | [_chip ## _ ## _name] = { \ | |
3784b6d6 RG |
197 | .desc = { \ |
198 | .name = #_name, \ | |
199 | .n_voltages = ARRAY_SIZE(voltages), \ | |
200 | .ops = &pfuze100_swb_regulator_ops, \ | |
201 | .type = REGULATOR_VOLTAGE, \ | |
f2518480 | 202 | .id = _chip ## _ ## _name, \ |
3784b6d6 RG |
203 | .owner = THIS_MODULE, \ |
204 | .volt_table = voltages, \ | |
205 | .vsel_reg = (base), \ | |
206 | .vsel_mask = (mask), \ | |
a6dcf978 SC |
207 | .enable_reg = (base), \ |
208 | .enable_mask = 0x48, \ | |
3784b6d6 RG |
209 | }, \ |
210 | } | |
211 | ||
f2518480 RG |
212 | #define PFUZE100_VGEN_REG(_chip, _name, base, min, max, step) \ |
213 | [_chip ## _ ## _name] = { \ | |
3784b6d6 RG |
214 | .desc = { \ |
215 | .name = #_name, \ | |
216 | .n_voltages = ((max) - (min)) / (step) + 1, \ | |
217 | .ops = &pfuze100_ldo_regulator_ops, \ | |
218 | .type = REGULATOR_VOLTAGE, \ | |
f2518480 | 219 | .id = _chip ## _ ## _name, \ |
3784b6d6 RG |
220 | .owner = THIS_MODULE, \ |
221 | .min_uV = (min), \ | |
222 | .uV_step = (step), \ | |
223 | .vsel_reg = (base), \ | |
224 | .vsel_mask = 0xf, \ | |
225 | .enable_reg = (base), \ | |
226 | .enable_mask = 0x10, \ | |
227 | }, \ | |
228 | .stby_reg = (base), \ | |
229 | .stby_mask = 0x20, \ | |
230 | } | |
231 | ||
e5a7a72c RG |
232 | #define PFUZE3000_VCC_REG(_chip, _name, base, min, max, step) { \ |
233 | .desc = { \ | |
234 | .name = #_name, \ | |
235 | .n_voltages = ((max) - (min)) / (step) + 1, \ | |
236 | .ops = &pfuze100_ldo_regulator_ops, \ | |
237 | .type = REGULATOR_VOLTAGE, \ | |
238 | .id = _chip ## _ ## _name, \ | |
239 | .owner = THIS_MODULE, \ | |
240 | .min_uV = (min), \ | |
241 | .uV_step = (step), \ | |
242 | .vsel_reg = (base), \ | |
243 | .vsel_mask = 0x3, \ | |
244 | .enable_reg = (base), \ | |
245 | .enable_mask = 0x10, \ | |
246 | }, \ | |
247 | .stby_reg = (base), \ | |
248 | .stby_mask = 0x20, \ | |
249 | } | |
250 | ||
251 | ||
252 | #define PFUZE3000_SW2_REG(_chip, _name, base, min, max, step) { \ | |
253 | .desc = { \ | |
254 | .name = #_name,\ | |
255 | .n_voltages = ((max) - (min)) / (step) + 1, \ | |
256 | .ops = &pfuze100_sw_regulator_ops, \ | |
257 | .type = REGULATOR_VOLTAGE, \ | |
258 | .id = _chip ## _ ## _name, \ | |
259 | .owner = THIS_MODULE, \ | |
260 | .min_uV = (min), \ | |
261 | .uV_step = (step), \ | |
262 | .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ | |
263 | .vsel_mask = 0x7, \ | |
264 | }, \ | |
265 | .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ | |
266 | .stby_mask = 0x7, \ | |
267 | } | |
268 | ||
269 | #define PFUZE3000_SW3_REG(_chip, _name, base, min, max, step) { \ | |
270 | .desc = { \ | |
271 | .name = #_name,\ | |
272 | .n_voltages = ((max) - (min)) / (step) + 1, \ | |
273 | .ops = &pfuze100_sw_regulator_ops, \ | |
274 | .type = REGULATOR_VOLTAGE, \ | |
275 | .id = _chip ## _ ## _name, \ | |
276 | .owner = THIS_MODULE, \ | |
277 | .min_uV = (min), \ | |
278 | .uV_step = (step), \ | |
279 | .vsel_reg = (base) + PFUZE100_VOL_OFFSET, \ | |
280 | .vsel_mask = 0xf, \ | |
281 | }, \ | |
282 | .stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \ | |
283 | .stby_mask = 0xf, \ | |
284 | } | |
285 | ||
f2518480 | 286 | /* PFUZE100 */ |
3784b6d6 | 287 | static struct pfuze_regulator pfuze100_regulators[] = { |
f2518480 RG |
288 | PFUZE100_SW_REG(PFUZE100, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000), |
289 | PFUZE100_SW_REG(PFUZE100, SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000), | |
290 | PFUZE100_SW_REG(PFUZE100, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000), | |
291 | PFUZE100_SW_REG(PFUZE100, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000), | |
292 | PFUZE100_SW_REG(PFUZE100, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000), | |
293 | PFUZE100_SW_REG(PFUZE100, SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000), | |
294 | PFUZE100_SWB_REG(PFUZE100, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst), | |
295 | PFUZE100_SWB_REG(PFUZE100, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), | |
296 | PFUZE100_FIXED_REG(PFUZE100, VREFDDR, PFUZE100_VREFDDRCON, 750000), | |
297 | PFUZE100_VGEN_REG(PFUZE100, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000), | |
298 | PFUZE100_VGEN_REG(PFUZE100, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), | |
299 | PFUZE100_VGEN_REG(PFUZE100, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000), | |
300 | PFUZE100_VGEN_REG(PFUZE100, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000), | |
301 | PFUZE100_VGEN_REG(PFUZE100, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), | |
302 | PFUZE100_VGEN_REG(PFUZE100, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), | |
303 | }; | |
304 | ||
305 | static struct pfuze_regulator pfuze200_regulators[] = { | |
306 | PFUZE100_SW_REG(PFUZE200, SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000), | |
307 | PFUZE100_SW_REG(PFUZE200, SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000), | |
308 | PFUZE100_SW_REG(PFUZE200, SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000), | |
309 | PFUZE100_SW_REG(PFUZE200, SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000), | |
310 | PFUZE100_SWB_REG(PFUZE200, SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst), | |
311 | PFUZE100_SWB_REG(PFUZE200, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), | |
312 | PFUZE100_FIXED_REG(PFUZE200, VREFDDR, PFUZE100_VREFDDRCON, 750000), | |
313 | PFUZE100_VGEN_REG(PFUZE200, VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000), | |
314 | PFUZE100_VGEN_REG(PFUZE200, VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), | |
315 | PFUZE100_VGEN_REG(PFUZE200, VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000), | |
316 | PFUZE100_VGEN_REG(PFUZE200, VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000), | |
317 | PFUZE100_VGEN_REG(PFUZE200, VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), | |
318 | PFUZE100_VGEN_REG(PFUZE200, VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), | |
3784b6d6 RG |
319 | }; |
320 | ||
e5a7a72c RG |
321 | static struct pfuze_regulator pfuze3000_regulators[] = { |
322 | PFUZE100_SW_REG(PFUZE3000, SW1A, PFUZE100_SW1ABVOL, 700000, 1475000, 25000), | |
323 | PFUZE100_SW_REG(PFUZE3000, SW1B, PFUZE100_SW1CVOL, 700000, 1475000, 25000), | |
324 | PFUZE100_SWB_REG(PFUZE3000, SW2, PFUZE100_SW2VOL, 0x7, pfuze3000_sw2lo), | |
325 | PFUZE3000_SW3_REG(PFUZE3000, SW3, PFUZE100_SW3AVOL, 900000, 1650000, 50000), | |
326 | PFUZE100_SWB_REG(PFUZE3000, SWBST, PFUZE100_SWBSTCON1, 0x3, pfuze100_swbst), | |
327 | PFUZE100_SWB_REG(PFUZE3000, VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs), | |
328 | PFUZE100_FIXED_REG(PFUZE3000, VREFDDR, PFUZE100_VREFDDRCON, 750000), | |
329 | PFUZE100_VGEN_REG(PFUZE3000, VLDO1, PFUZE100_VGEN1VOL, 1800000, 3300000, 100000), | |
330 | PFUZE100_VGEN_REG(PFUZE3000, VLDO2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000), | |
331 | PFUZE3000_VCC_REG(PFUZE3000, VCCSD, PFUZE100_VGEN3VOL, 2850000, 3300000, 150000), | |
332 | PFUZE3000_VCC_REG(PFUZE3000, V33, PFUZE100_VGEN4VOL, 2850000, 3300000, 150000), | |
333 | PFUZE100_VGEN_REG(PFUZE3000, VLDO3, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000), | |
334 | PFUZE100_VGEN_REG(PFUZE3000, VLDO4, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000), | |
335 | }; | |
336 | ||
f2518480 RG |
337 | static struct pfuze_regulator *pfuze_regulators; |
338 | ||
3784b6d6 | 339 | #ifdef CONFIG_OF |
f2518480 | 340 | /* PFUZE100 */ |
3784b6d6 RG |
341 | static struct of_regulator_match pfuze100_matches[] = { |
342 | { .name = "sw1ab", }, | |
343 | { .name = "sw1c", }, | |
344 | { .name = "sw2", }, | |
345 | { .name = "sw3a", }, | |
346 | { .name = "sw3b", }, | |
347 | { .name = "sw4", }, | |
348 | { .name = "swbst", }, | |
349 | { .name = "vsnvs", }, | |
350 | { .name = "vrefddr", }, | |
351 | { .name = "vgen1", }, | |
352 | { .name = "vgen2", }, | |
353 | { .name = "vgen3", }, | |
354 | { .name = "vgen4", }, | |
355 | { .name = "vgen5", }, | |
356 | { .name = "vgen6", }, | |
357 | }; | |
358 | ||
f2518480 RG |
359 | /* PFUZE200 */ |
360 | static struct of_regulator_match pfuze200_matches[] = { | |
361 | ||
362 | { .name = "sw1ab", }, | |
363 | { .name = "sw2", }, | |
364 | { .name = "sw3a", }, | |
365 | { .name = "sw3b", }, | |
366 | { .name = "swbst", }, | |
367 | { .name = "vsnvs", }, | |
368 | { .name = "vrefddr", }, | |
369 | { .name = "vgen1", }, | |
370 | { .name = "vgen2", }, | |
371 | { .name = "vgen3", }, | |
372 | { .name = "vgen4", }, | |
373 | { .name = "vgen5", }, | |
374 | { .name = "vgen6", }, | |
375 | }; | |
376 | ||
e5a7a72c RG |
377 | /* PFUZE3000 */ |
378 | static struct of_regulator_match pfuze3000_matches[] = { | |
379 | ||
380 | { .name = "sw1a", }, | |
381 | { .name = "sw1b", }, | |
382 | { .name = "sw2", }, | |
383 | { .name = "sw3", }, | |
384 | { .name = "swbst", }, | |
385 | { .name = "vsnvs", }, | |
386 | { .name = "vrefddr", }, | |
387 | { .name = "vldo1", }, | |
388 | { .name = "vldo2", }, | |
389 | { .name = "vccsd", }, | |
390 | { .name = "v33", }, | |
391 | { .name = "vldo3", }, | |
392 | { .name = "vldo4", }, | |
393 | }; | |
394 | ||
f2518480 RG |
395 | static struct of_regulator_match *pfuze_matches; |
396 | ||
3784b6d6 RG |
397 | static int pfuze_parse_regulators_dt(struct pfuze_chip *chip) |
398 | { | |
399 | struct device *dev = chip->dev; | |
400 | struct device_node *np, *parent; | |
401 | int ret; | |
402 | ||
3e01c75a | 403 | np = of_node_get(dev->of_node); |
3784b6d6 | 404 | if (!np) |
6428789e | 405 | return -EINVAL; |
3784b6d6 | 406 | |
d7857c42 | 407 | parent = of_get_child_by_name(np, "regulators"); |
3784b6d6 RG |
408 | if (!parent) { |
409 | dev_err(dev, "regulators node not found\n"); | |
410 | return -EINVAL; | |
411 | } | |
412 | ||
f2518480 | 413 | switch (chip->chip_id) { |
e5a7a72c RG |
414 | case PFUZE3000: |
415 | pfuze_matches = pfuze3000_matches; | |
416 | ret = of_regulator_match(dev, parent, pfuze3000_matches, | |
417 | ARRAY_SIZE(pfuze3000_matches)); | |
418 | break; | |
f2518480 RG |
419 | case PFUZE200: |
420 | pfuze_matches = pfuze200_matches; | |
421 | ret = of_regulator_match(dev, parent, pfuze200_matches, | |
422 | ARRAY_SIZE(pfuze200_matches)); | |
423 | break; | |
424 | ||
425 | case PFUZE100: | |
426 | default: | |
427 | pfuze_matches = pfuze100_matches; | |
428 | ret = of_regulator_match(dev, parent, pfuze100_matches, | |
429 | ARRAY_SIZE(pfuze100_matches)); | |
430 | break; | |
431 | } | |
3784b6d6 RG |
432 | |
433 | of_node_put(parent); | |
434 | if (ret < 0) { | |
435 | dev_err(dev, "Error parsing regulator init data: %d\n", | |
436 | ret); | |
437 | return ret; | |
438 | } | |
439 | ||
440 | return 0; | |
441 | } | |
442 | ||
443 | static inline struct regulator_init_data *match_init_data(int index) | |
444 | { | |
f2518480 | 445 | return pfuze_matches[index].init_data; |
3784b6d6 RG |
446 | } |
447 | ||
448 | static inline struct device_node *match_of_node(int index) | |
449 | { | |
f2518480 | 450 | return pfuze_matches[index].of_node; |
3784b6d6 RG |
451 | } |
452 | #else | |
453 | static int pfuze_parse_regulators_dt(struct pfuze_chip *chip) | |
454 | { | |
205c97bc | 455 | return 0; |
3784b6d6 RG |
456 | } |
457 | ||
458 | static inline struct regulator_init_data *match_init_data(int index) | |
459 | { | |
460 | return NULL; | |
461 | } | |
462 | ||
463 | static inline struct device_node *match_of_node(int index) | |
464 | { | |
465 | return NULL; | |
466 | } | |
467 | #endif | |
468 | ||
469 | static int pfuze_identify(struct pfuze_chip *pfuze_chip) | |
470 | { | |
471 | unsigned int value; | |
472 | int ret; | |
473 | ||
474 | ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value); | |
475 | if (ret) | |
476 | return ret; | |
477 | ||
f2518480 RG |
478 | if (((value & 0x0f) == 0x8) && (pfuze_chip->chip_id == PFUZE100)) { |
479 | /* | |
480 | * Freescale misprogrammed 1-3% of parts prior to week 8 of 2013 | |
481 | * as ID=8 in PFUZE100 | |
482 | */ | |
62b38916 | 483 | dev_info(pfuze_chip->dev, "Assuming misprogrammed ID=0x8"); |
e5a7a72c RG |
484 | } else if ((value & 0x0f) != pfuze_chip->chip_id && |
485 | (value & 0xf0) >> 4 != pfuze_chip->chip_id) { | |
f2518480 | 486 | /* device id NOT match with your setting */ |
3784b6d6 RG |
487 | dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value); |
488 | return -ENODEV; | |
489 | } | |
490 | ||
491 | ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value); | |
492 | if (ret) | |
493 | return ret; | |
494 | dev_info(pfuze_chip->dev, | |
f2694383 | 495 | "Full layer: %x, Metal layer: %x\n", |
3784b6d6 RG |
496 | (value & 0xf0) >> 4, value & 0x0f); |
497 | ||
498 | ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value); | |
499 | if (ret) | |
500 | return ret; | |
501 | dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n", | |
502 | (value & 0xc) >> 2, value & 0x3); | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
507 | static const struct regmap_config pfuze_regmap_config = { | |
508 | .reg_bits = 8, | |
509 | .val_bits = 8, | |
6b8430c3 | 510 | .max_register = PFUZE_NUMREGS - 1, |
3784b6d6 RG |
511 | .cache_type = REGCACHE_RBTREE, |
512 | }; | |
513 | ||
514 | static int pfuze100_regulator_probe(struct i2c_client *client, | |
515 | const struct i2c_device_id *id) | |
516 | { | |
517 | struct pfuze_chip *pfuze_chip; | |
518 | struct pfuze_regulator_platform_data *pdata = | |
519 | dev_get_platdata(&client->dev); | |
520 | struct regulator_config config = { }; | |
521 | int i, ret; | |
f2518480 RG |
522 | const struct of_device_id *match; |
523 | u32 regulator_num; | |
e5a7a72c | 524 | u32 sw_check_start, sw_check_end, sw_hi = 0x40; |
3784b6d6 RG |
525 | |
526 | pfuze_chip = devm_kzalloc(&client->dev, sizeof(*pfuze_chip), | |
527 | GFP_KERNEL); | |
528 | if (!pfuze_chip) | |
529 | return -ENOMEM; | |
530 | ||
f2518480 RG |
531 | if (client->dev.of_node) { |
532 | match = of_match_device(of_match_ptr(pfuze_dt_ids), | |
533 | &client->dev); | |
534 | if (!match) { | |
535 | dev_err(&client->dev, "Error: No device match found\n"); | |
536 | return -ENODEV; | |
537 | } | |
538 | pfuze_chip->chip_id = (int)(long)match->data; | |
539 | } else if (id) { | |
540 | pfuze_chip->chip_id = id->driver_data; | |
541 | } else { | |
542 | dev_err(&client->dev, "No dts match or id table match found\n"); | |
543 | return -ENODEV; | |
544 | } | |
3784b6d6 | 545 | |
f2518480 | 546 | i2c_set_clientdata(client, pfuze_chip); |
3784b6d6 RG |
547 | pfuze_chip->dev = &client->dev; |
548 | ||
549 | pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config); | |
550 | if (IS_ERR(pfuze_chip->regmap)) { | |
551 | ret = PTR_ERR(pfuze_chip->regmap); | |
552 | dev_err(&client->dev, | |
553 | "regmap allocation failed with err %d\n", ret); | |
554 | return ret; | |
555 | } | |
556 | ||
557 | ret = pfuze_identify(pfuze_chip); | |
558 | if (ret) { | |
559 | dev_err(&client->dev, "unrecognized pfuze chip ID!\n"); | |
560 | return ret; | |
561 | } | |
562 | ||
f2518480 RG |
563 | /* use the right regulators after identify the right device */ |
564 | switch (pfuze_chip->chip_id) { | |
e5a7a72c RG |
565 | case PFUZE3000: |
566 | pfuze_regulators = pfuze3000_regulators; | |
567 | regulator_num = ARRAY_SIZE(pfuze3000_regulators); | |
568 | sw_check_start = PFUZE3000_SW2; | |
569 | sw_check_end = PFUZE3000_SW2; | |
570 | sw_hi = 1 << 3; | |
571 | break; | |
f2518480 RG |
572 | case PFUZE200: |
573 | pfuze_regulators = pfuze200_regulators; | |
574 | regulator_num = ARRAY_SIZE(pfuze200_regulators); | |
575 | sw_check_start = PFUZE200_SW2; | |
576 | sw_check_end = PFUZE200_SW3B; | |
577 | break; | |
f2518480 RG |
578 | case PFUZE100: |
579 | default: | |
580 | pfuze_regulators = pfuze100_regulators; | |
581 | regulator_num = ARRAY_SIZE(pfuze100_regulators); | |
582 | sw_check_start = PFUZE100_SW2; | |
583 | sw_check_end = PFUZE100_SW4; | |
584 | break; | |
585 | } | |
586 | dev_info(&client->dev, "pfuze%s found.\n", | |
e5a7a72c RG |
587 | (pfuze_chip->chip_id == PFUZE100) ? "100" : |
588 | ((pfuze_chip->chip_id == PFUZE200) ? "200" : "3000")); | |
f2518480 RG |
589 | |
590 | memcpy(pfuze_chip->regulator_descs, pfuze_regulators, | |
591 | sizeof(pfuze_chip->regulator_descs)); | |
592 | ||
3784b6d6 RG |
593 | ret = pfuze_parse_regulators_dt(pfuze_chip); |
594 | if (ret) | |
595 | return ret; | |
596 | ||
f2518480 | 597 | for (i = 0; i < regulator_num; i++) { |
3784b6d6 | 598 | struct regulator_init_data *init_data; |
d9493234 | 599 | struct regulator_desc *desc; |
3784b6d6 RG |
600 | int val; |
601 | ||
d9493234 AL |
602 | desc = &pfuze_chip->regulator_descs[i].desc; |
603 | ||
3784b6d6 RG |
604 | if (pdata) |
605 | init_data = pdata->init_data[i]; | |
606 | else | |
607 | init_data = match_init_data(i); | |
608 | ||
609 | /* SW2~SW4 high bit check and modify the voltage value table */ | |
f2518480 | 610 | if (i >= sw_check_start && i <= sw_check_end) { |
d9493234 | 611 | regmap_read(pfuze_chip->regmap, desc->vsel_reg, &val); |
e5a7a72c RG |
612 | if (val & sw_hi) { |
613 | if (pfuze_chip->chip_id == PFUZE3000) { | |
614 | desc->volt_table = pfuze3000_sw2hi; | |
615 | desc->n_voltages = ARRAY_SIZE(pfuze3000_sw2hi); | |
616 | } else { | |
617 | desc->min_uV = 800000; | |
618 | desc->uV_step = 50000; | |
619 | desc->n_voltages = 51; | |
620 | } | |
3784b6d6 RG |
621 | } |
622 | } | |
623 | ||
624 | config.dev = &client->dev; | |
625 | config.init_data = init_data; | |
626 | config.driver_data = pfuze_chip; | |
627 | config.of_node = match_of_node(i); | |
fe788b09 | 628 | config.ena_gpio = -EINVAL; |
3784b6d6 | 629 | |
f5247b40 JH |
630 | pfuze_chip->regulators[i] = |
631 | devm_regulator_register(&client->dev, desc, &config); | |
3784b6d6 RG |
632 | if (IS_ERR(pfuze_chip->regulators[i])) { |
633 | dev_err(&client->dev, "register regulator%s failed\n", | |
f2518480 | 634 | pfuze_regulators[i].desc.name); |
f5247b40 | 635 | return PTR_ERR(pfuze_chip->regulators[i]); |
3784b6d6 RG |
636 | } |
637 | } | |
638 | ||
639 | return 0; | |
640 | } | |
641 | ||
3784b6d6 RG |
642 | static struct i2c_driver pfuze_driver = { |
643 | .id_table = pfuze_device_id, | |
644 | .driver = { | |
645 | .name = "pfuze100-regulator", | |
3784b6d6 RG |
646 | .of_match_table = pfuze_dt_ids, |
647 | }, | |
648 | .probe = pfuze100_regulator_probe, | |
3784b6d6 RG |
649 | }; |
650 | module_i2c_driver(pfuze_driver); | |
651 | ||
652 | MODULE_AUTHOR("Robin Gong <b38343@freescale.com>"); | |
2cee2121 | 653 | MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100/PFUZE200 PMIC"); |
12d20fc2 | 654 | MODULE_LICENSE("GPL v2"); |