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5e428d5c YS |
1 | /* |
2 | * Regulator Driver for Freescale MC13892 PMIC | |
3 | * | |
4 | * Copyright 2010 Yong Shen <yong.shen@linaro.org> | |
5 | * | |
6 | * Based on draft driver from Arnaud Patard <arnaud.patard@rtp-net.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/mfd/mc13892.h> | |
14 | #include <linux/regulator/machine.h> | |
15 | #include <linux/regulator/driver.h> | |
16 | #include <linux/platform_device.h> | |
17 | #include <linux/kernel.h> | |
4ec1b54c | 18 | #include <linux/mfd/core.h> |
5e428d5c YS |
19 | #include <linux/slab.h> |
20 | #include <linux/init.h> | |
21 | #include <linux/err.h> | |
22 | #include "mc13xxx.h" | |
23 | ||
24 | #define MC13892_REVISION 7 | |
25 | ||
26 | #define MC13892_POWERCTL0 13 | |
27 | #define MC13892_POWERCTL0_USEROFFSPI 3 | |
28 | #define MC13892_POWERCTL0_VCOINCELLVSEL 20 | |
29 | #define MC13892_POWERCTL0_VCOINCELLVSEL_M (7<<20) | |
30 | #define MC13892_POWERCTL0_VCOINCELLEN (1<<23) | |
31 | ||
32 | #define MC13892_SWITCHERS0_SWxHI (1<<23) | |
33 | ||
34 | #define MC13892_SWITCHERS0 24 | |
35 | #define MC13892_SWITCHERS0_SW1VSEL 0 | |
36 | #define MC13892_SWITCHERS0_SW1VSEL_M (0x1f<<0) | |
37 | #define MC13892_SWITCHERS0_SW1HI (1<<23) | |
38 | #define MC13892_SWITCHERS0_SW1EN 0 | |
39 | ||
40 | #define MC13892_SWITCHERS1 25 | |
41 | #define MC13892_SWITCHERS1_SW2VSEL 0 | |
42 | #define MC13892_SWITCHERS1_SW2VSEL_M (0x1f<<0) | |
43 | #define MC13892_SWITCHERS1_SW2HI (1<<23) | |
44 | #define MC13892_SWITCHERS1_SW2EN 0 | |
45 | ||
46 | #define MC13892_SWITCHERS2 26 | |
47 | #define MC13892_SWITCHERS2_SW3VSEL 0 | |
48 | #define MC13892_SWITCHERS2_SW3VSEL_M (0x1f<<0) | |
49 | #define MC13892_SWITCHERS2_SW3HI (1<<23) | |
50 | #define MC13892_SWITCHERS2_SW3EN 0 | |
51 | ||
52 | #define MC13892_SWITCHERS3 27 | |
53 | #define MC13892_SWITCHERS3_SW4VSEL 0 | |
54 | #define MC13892_SWITCHERS3_SW4VSEL_M (0x1f<<0) | |
55 | #define MC13892_SWITCHERS3_SW4HI (1<<23) | |
56 | #define MC13892_SWITCHERS3_SW4EN 0 | |
57 | ||
58 | #define MC13892_SWITCHERS4 28 | |
59 | #define MC13892_SWITCHERS4_SW1MODE 0 | |
60 | #define MC13892_SWITCHERS4_SW1MODE_AUTO (8<<0) | |
61 | #define MC13892_SWITCHERS4_SW1MODE_M (0xf<<0) | |
62 | #define MC13892_SWITCHERS4_SW2MODE 10 | |
63 | #define MC13892_SWITCHERS4_SW2MODE_AUTO (8<<10) | |
64 | #define MC13892_SWITCHERS4_SW2MODE_M (0xf<<10) | |
65 | ||
66 | #define MC13892_SWITCHERS5 29 | |
67 | #define MC13892_SWITCHERS5_SW3MODE 0 | |
68 | #define MC13892_SWITCHERS5_SW3MODE_AUTO (8<<0) | |
69 | #define MC13892_SWITCHERS5_SW3MODE_M (0xf<<0) | |
70 | #define MC13892_SWITCHERS5_SW4MODE 8 | |
71 | #define MC13892_SWITCHERS5_SW4MODE_AUTO (8<<8) | |
72 | #define MC13892_SWITCHERS5_SW4MODE_M (0xf<<8) | |
73 | #define MC13892_SWITCHERS5_SWBSTEN (1<<20) | |
74 | ||
75 | #define MC13892_REGULATORSETTING0 30 | |
76 | #define MC13892_REGULATORSETTING0_VGEN1VSEL 0 | |
77 | #define MC13892_REGULATORSETTING0_VDIGVSEL 4 | |
78 | #define MC13892_REGULATORSETTING0_VGEN2VSEL 6 | |
79 | #define MC13892_REGULATORSETTING0_VPLLVSEL 9 | |
80 | #define MC13892_REGULATORSETTING0_VUSB2VSEL 11 | |
81 | #define MC13892_REGULATORSETTING0_VGEN3VSEL 14 | |
82 | #define MC13892_REGULATORSETTING0_VCAMVSEL 16 | |
83 | ||
84 | #define MC13892_REGULATORSETTING0_VGEN1VSEL_M (3<<0) | |
85 | #define MC13892_REGULATORSETTING0_VDIGVSEL_M (3<<4) | |
86 | #define MC13892_REGULATORSETTING0_VGEN2VSEL_M (7<<6) | |
87 | #define MC13892_REGULATORSETTING0_VPLLVSEL_M (3<<9) | |
88 | #define MC13892_REGULATORSETTING0_VUSB2VSEL_M (3<<11) | |
89 | #define MC13892_REGULATORSETTING0_VGEN3VSEL_M (1<<14) | |
90 | #define MC13892_REGULATORSETTING0_VCAMVSEL_M (3<<16) | |
91 | ||
92 | #define MC13892_REGULATORSETTING1 31 | |
93 | #define MC13892_REGULATORSETTING1_VVIDEOVSEL 2 | |
94 | #define MC13892_REGULATORSETTING1_VAUDIOVSEL 4 | |
95 | #define MC13892_REGULATORSETTING1_VSDVSEL 6 | |
96 | ||
97 | #define MC13892_REGULATORSETTING1_VVIDEOVSEL_M (3<<2) | |
98 | #define MC13892_REGULATORSETTING1_VAUDIOVSEL_M (3<<4) | |
99 | #define MC13892_REGULATORSETTING1_VSDVSEL_M (7<<6) | |
100 | ||
101 | #define MC13892_REGULATORMODE0 32 | |
102 | #define MC13892_REGULATORMODE0_VGEN1EN (1<<0) | |
103 | #define MC13892_REGULATORMODE0_VGEN1STDBY (1<<1) | |
104 | #define MC13892_REGULATORMODE0_VGEN1MODE (1<<2) | |
105 | #define MC13892_REGULATORMODE0_VIOHIEN (1<<3) | |
106 | #define MC13892_REGULATORMODE0_VIOHISTDBY (1<<4) | |
107 | #define MC13892_REGULATORMODE0_VIOHIMODE (1<<5) | |
108 | #define MC13892_REGULATORMODE0_VDIGEN (1<<9) | |
109 | #define MC13892_REGULATORMODE0_VDIGSTDBY (1<<10) | |
110 | #define MC13892_REGULATORMODE0_VDIGMODE (1<<11) | |
111 | #define MC13892_REGULATORMODE0_VGEN2EN (1<<12) | |
112 | #define MC13892_REGULATORMODE0_VGEN2STDBY (1<<13) | |
113 | #define MC13892_REGULATORMODE0_VGEN2MODE (1<<14) | |
114 | #define MC13892_REGULATORMODE0_VPLLEN (1<<15) | |
115 | #define MC13892_REGULATORMODE0_VPLLSTDBY (1<<16) | |
116 | #define MC13892_REGULATORMODE0_VPLLMODE (1<<17) | |
117 | #define MC13892_REGULATORMODE0_VUSB2EN (1<<18) | |
118 | #define MC13892_REGULATORMODE0_VUSB2STDBY (1<<19) | |
119 | #define MC13892_REGULATORMODE0_VUSB2MODE (1<<20) | |
120 | ||
121 | #define MC13892_REGULATORMODE1 33 | |
122 | #define MC13892_REGULATORMODE1_VGEN3EN (1<<0) | |
123 | #define MC13892_REGULATORMODE1_VGEN3STDBY (1<<1) | |
124 | #define MC13892_REGULATORMODE1_VGEN3MODE (1<<2) | |
125 | #define MC13892_REGULATORMODE1_VCAMEN (1<<6) | |
126 | #define MC13892_REGULATORMODE1_VCAMSTDBY (1<<7) | |
127 | #define MC13892_REGULATORMODE1_VCAMMODE (1<<8) | |
128 | #define MC13892_REGULATORMODE1_VCAMCONFIGEN (1<<9) | |
129 | #define MC13892_REGULATORMODE1_VVIDEOEN (1<<12) | |
130 | #define MC13892_REGULATORMODE1_VVIDEOSTDBY (1<<13) | |
131 | #define MC13892_REGULATORMODE1_VVIDEOMODE (1<<14) | |
132 | #define MC13892_REGULATORMODE1_VAUDIOEN (1<<15) | |
133 | #define MC13892_REGULATORMODE1_VAUDIOSTDBY (1<<16) | |
134 | #define MC13892_REGULATORMODE1_VAUDIOMODE (1<<17) | |
135 | #define MC13892_REGULATORMODE1_VSDEN (1<<18) | |
136 | #define MC13892_REGULATORMODE1_VSDSTDBY (1<<19) | |
137 | #define MC13892_REGULATORMODE1_VSDMODE (1<<20) | |
138 | ||
139 | #define MC13892_POWERMISC 34 | |
140 | #define MC13892_POWERMISC_GPO1EN (1<<6) | |
141 | #define MC13892_POWERMISC_GPO2EN (1<<8) | |
142 | #define MC13892_POWERMISC_GPO3EN (1<<10) | |
143 | #define MC13892_POWERMISC_GPO4EN (1<<12) | |
144 | #define MC13892_POWERMISC_PWGT1SPIEN (1<<15) | |
145 | #define MC13892_POWERMISC_PWGT2SPIEN (1<<16) | |
146 | #define MC13892_POWERMISC_GPO4ADINEN (1<<21) | |
147 | ||
148 | #define MC13892_POWERMISC_PWGTSPI_M (3 << 15) | |
149 | ||
150 | #define MC13892_USB1 50 | |
151 | #define MC13892_USB1_VUSBEN (1<<3) | |
152 | ||
153 | static const int mc13892_vcoincell[] = { | |
154 | 2500000, 2700000, 2800000, 2900000, 3000000, 3100000, | |
155 | 3200000, 3300000, | |
156 | }; | |
157 | ||
158 | static const int mc13892_sw1[] = { | |
159 | 600000, 625000, 650000, 675000, 700000, 725000, | |
160 | 750000, 775000, 800000, 825000, 850000, 875000, | |
161 | 900000, 925000, 950000, 975000, 1000000, 1025000, | |
162 | 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, | |
163 | 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, | |
164 | 1350000, 1375000 | |
165 | }; | |
166 | ||
167 | static const int mc13892_sw[] = { | |
168 | 600000, 625000, 650000, 675000, 700000, 725000, | |
169 | 750000, 775000, 800000, 825000, 850000, 875000, | |
170 | 900000, 925000, 950000, 975000, 1000000, 1025000, | |
171 | 1050000, 1075000, 1100000, 1125000, 1150000, 1175000, | |
172 | 1200000, 1225000, 1250000, 1275000, 1300000, 1325000, | |
173 | 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, | |
174 | 1500000, 1525000, 1550000, 1575000, 1600000, 1625000, | |
175 | 1650000, 1675000, 1700000, 1725000, 1750000, 1775000, | |
176 | 1800000, 1825000, 1850000, 1875000 | |
177 | }; | |
178 | ||
179 | static const int mc13892_swbst[] = { | |
180 | 5000000, | |
181 | }; | |
182 | ||
183 | static const int mc13892_viohi[] = { | |
184 | 2775000, | |
185 | }; | |
186 | ||
187 | static const int mc13892_vpll[] = { | |
188 | 1050000, 1250000, 1650000, 1800000, | |
189 | }; | |
190 | ||
191 | static const int mc13892_vdig[] = { | |
192 | 1050000, 1250000, 1650000, 1800000, | |
193 | }; | |
194 | ||
195 | static const int mc13892_vsd[] = { | |
196 | 1800000, 2000000, 2600000, 2700000, | |
197 | 2800000, 2900000, 3000000, 3150000, | |
198 | }; | |
199 | ||
200 | static const int mc13892_vusb2[] = { | |
201 | 2400000, 2600000, 2700000, 2775000, | |
202 | }; | |
203 | ||
204 | static const int mc13892_vvideo[] = { | |
205 | 2700000, 2775000, 2500000, 2600000, | |
206 | }; | |
207 | ||
208 | static const int mc13892_vaudio[] = { | |
209 | 2300000, 2500000, 2775000, 3000000, | |
210 | }; | |
211 | ||
212 | static const int mc13892_vcam[] = { | |
213 | 2500000, 2600000, 2750000, 3000000, | |
214 | }; | |
215 | ||
216 | static const int mc13892_vgen1[] = { | |
217 | 1200000, 1500000, 2775000, 3150000, | |
218 | }; | |
219 | ||
220 | static const int mc13892_vgen2[] = { | |
221 | 1200000, 1500000, 1600000, 1800000, | |
222 | 2700000, 2800000, 3000000, 3150000, | |
223 | }; | |
224 | ||
225 | static const int mc13892_vgen3[] = { | |
226 | 1800000, 2900000, | |
227 | }; | |
228 | ||
229 | static const int mc13892_vusb[] = { | |
230 | 3300000, | |
231 | }; | |
232 | ||
233 | static const int mc13892_gpo[] = { | |
234 | 2750000, | |
235 | }; | |
236 | ||
237 | static const int mc13892_pwgtdrv[] = { | |
238 | 5000000, | |
239 | }; | |
240 | ||
241 | static struct regulator_ops mc13892_gpo_regulator_ops; | |
242 | /* sw regulators need special care due to the "hi bit" */ | |
243 | static struct regulator_ops mc13892_sw_regulator_ops; | |
244 | ||
245 | ||
246 | #define MC13892_FIXED_DEFINE(name, reg, voltages) \ | |
247 | MC13xxx_FIXED_DEFINE(MC13892_, name, reg, voltages, \ | |
248 | mc13xxx_fixed_regulator_ops) | |
249 | ||
250 | #define MC13892_GPO_DEFINE(name, reg, voltages) \ | |
251 | MC13xxx_GPO_DEFINE(MC13892_, name, reg, voltages, \ | |
252 | mc13892_gpo_regulator_ops) | |
253 | ||
254 | #define MC13892_SW_DEFINE(name, reg, vsel_reg, voltages) \ | |
255 | MC13xxx_DEFINE(MC13892_, name, reg, vsel_reg, voltages, \ | |
256 | mc13892_sw_regulator_ops) | |
257 | ||
258 | #define MC13892_DEFINE_REGU(name, reg, vsel_reg, voltages) \ | |
259 | MC13xxx_DEFINE(MC13892_, name, reg, vsel_reg, voltages, \ | |
260 | mc13xxx_regulator_ops) | |
261 | ||
262 | static struct mc13xxx_regulator mc13892_regulators[] = { | |
263 | MC13892_DEFINE_REGU(VCOINCELL, POWERCTL0, POWERCTL0, mc13892_vcoincell), | |
264 | MC13892_SW_DEFINE(SW1, SWITCHERS0, SWITCHERS0, mc13892_sw1), | |
265 | MC13892_SW_DEFINE(SW2, SWITCHERS1, SWITCHERS1, mc13892_sw), | |
266 | MC13892_SW_DEFINE(SW3, SWITCHERS2, SWITCHERS2, mc13892_sw), | |
267 | MC13892_SW_DEFINE(SW4, SWITCHERS3, SWITCHERS3, mc13892_sw), | |
268 | MC13892_FIXED_DEFINE(SWBST, SWITCHERS5, mc13892_swbst), | |
269 | MC13892_FIXED_DEFINE(VIOHI, REGULATORMODE0, mc13892_viohi), | |
270 | MC13892_DEFINE_REGU(VPLL, REGULATORMODE0, REGULATORSETTING0, \ | |
271 | mc13892_vpll), | |
272 | MC13892_DEFINE_REGU(VDIG, REGULATORMODE0, REGULATORSETTING0, \ | |
273 | mc13892_vdig), | |
274 | MC13892_DEFINE_REGU(VSD, REGULATORMODE1, REGULATORSETTING1, \ | |
275 | mc13892_vsd), | |
276 | MC13892_DEFINE_REGU(VUSB2, REGULATORMODE0, REGULATORSETTING0, \ | |
277 | mc13892_vusb2), | |
278 | MC13892_DEFINE_REGU(VVIDEO, REGULATORMODE1, REGULATORSETTING1, \ | |
279 | mc13892_vvideo), | |
280 | MC13892_DEFINE_REGU(VAUDIO, REGULATORMODE1, REGULATORSETTING1, \ | |
281 | mc13892_vaudio), | |
282 | MC13892_DEFINE_REGU(VCAM, REGULATORMODE1, REGULATORSETTING0, \ | |
283 | mc13892_vcam), | |
284 | MC13892_DEFINE_REGU(VGEN1, REGULATORMODE0, REGULATORSETTING0, \ | |
285 | mc13892_vgen1), | |
286 | MC13892_DEFINE_REGU(VGEN2, REGULATORMODE0, REGULATORSETTING0, \ | |
287 | mc13892_vgen2), | |
288 | MC13892_DEFINE_REGU(VGEN3, REGULATORMODE1, REGULATORSETTING0, \ | |
289 | mc13892_vgen3), | |
290 | MC13892_FIXED_DEFINE(VUSB, USB1, mc13892_vusb), | |
291 | MC13892_GPO_DEFINE(GPO1, POWERMISC, mc13892_gpo), | |
292 | MC13892_GPO_DEFINE(GPO2, POWERMISC, mc13892_gpo), | |
293 | MC13892_GPO_DEFINE(GPO3, POWERMISC, mc13892_gpo), | |
294 | MC13892_GPO_DEFINE(GPO4, POWERMISC, mc13892_gpo), | |
295 | MC13892_GPO_DEFINE(PWGT1SPI, POWERMISC, mc13892_pwgtdrv), | |
296 | MC13892_GPO_DEFINE(PWGT2SPI, POWERMISC, mc13892_pwgtdrv), | |
297 | }; | |
298 | ||
27315cf6 MB |
299 | static int mc13892_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask, |
300 | u32 val) | |
5e428d5c YS |
301 | { |
302 | struct mc13xxx *mc13892 = priv->mc13xxx; | |
303 | int ret; | |
304 | u32 valread; | |
305 | ||
306 | BUG_ON(val & ~mask); | |
307 | ||
308 | ret = mc13xxx_reg_read(mc13892, MC13892_POWERMISC, &valread); | |
309 | if (ret) | |
310 | return ret; | |
311 | ||
312 | /* Update the stored state for Power Gates. */ | |
313 | priv->powermisc_pwgt_state = | |
314 | (priv->powermisc_pwgt_state & ~mask) | val; | |
315 | priv->powermisc_pwgt_state &= MC13892_POWERMISC_PWGTSPI_M; | |
316 | ||
317 | /* Construct the new register value */ | |
318 | valread = (valread & ~mask) | val; | |
319 | /* Overwrite the PWGTxEN with the stored version */ | |
320 | valread = (valread & ~MC13892_POWERMISC_PWGTSPI_M) | | |
321 | priv->powermisc_pwgt_state; | |
322 | ||
323 | return mc13xxx_reg_write(mc13892, MC13892_POWERMISC, valread); | |
324 | } | |
325 | ||
326 | static int mc13892_gpo_regulator_enable(struct regulator_dev *rdev) | |
327 | { | |
328 | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | |
329 | int id = rdev_get_id(rdev); | |
330 | int ret; | |
331 | u32 en_val = mc13892_regulators[id].enable_bit; | |
332 | u32 mask = mc13892_regulators[id].enable_bit; | |
333 | ||
334 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); | |
335 | ||
336 | /* Power Gate enable value is 0 */ | |
337 | if (id == MC13892_PWGT1SPI || id == MC13892_PWGT2SPI) | |
338 | en_val = 0; | |
339 | ||
340 | if (id == MC13892_GPO4) | |
341 | mask |= MC13892_POWERMISC_GPO4ADINEN; | |
342 | ||
343 | mc13xxx_lock(priv->mc13xxx); | |
344 | ret = mc13892_powermisc_rmw(priv, mask, en_val); | |
345 | mc13xxx_unlock(priv->mc13xxx); | |
346 | ||
347 | return ret; | |
348 | } | |
349 | ||
350 | static int mc13892_gpo_regulator_disable(struct regulator_dev *rdev) | |
351 | { | |
352 | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | |
353 | int id = rdev_get_id(rdev); | |
354 | int ret; | |
355 | u32 dis_val = 0; | |
356 | ||
357 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); | |
358 | ||
359 | /* Power Gate disable value is 1 */ | |
360 | if (id == MC13892_PWGT1SPI || id == MC13892_PWGT2SPI) | |
361 | dis_val = mc13892_regulators[id].enable_bit; | |
362 | ||
363 | mc13xxx_lock(priv->mc13xxx); | |
364 | ret = mc13892_powermisc_rmw(priv, mc13892_regulators[id].enable_bit, | |
365 | dis_val); | |
366 | mc13xxx_unlock(priv->mc13xxx); | |
367 | ||
368 | return ret; | |
369 | } | |
370 | ||
371 | static int mc13892_gpo_regulator_is_enabled(struct regulator_dev *rdev) | |
372 | { | |
373 | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | |
374 | int ret, id = rdev_get_id(rdev); | |
375 | unsigned int val; | |
376 | ||
377 | mc13xxx_lock(priv->mc13xxx); | |
378 | ret = mc13xxx_reg_read(priv->mc13xxx, mc13892_regulators[id].reg, &val); | |
379 | mc13xxx_unlock(priv->mc13xxx); | |
380 | ||
381 | if (ret) | |
382 | return ret; | |
383 | ||
384 | /* Power Gates state is stored in powermisc_pwgt_state | |
385 | * where the meaning of bits is negated */ | |
386 | val = (val & ~MC13892_POWERMISC_PWGTSPI_M) | | |
387 | (priv->powermisc_pwgt_state ^ MC13892_POWERMISC_PWGTSPI_M); | |
388 | ||
389 | return (val & mc13892_regulators[id].enable_bit) != 0; | |
390 | } | |
391 | ||
392 | ||
393 | static struct regulator_ops mc13892_gpo_regulator_ops = { | |
394 | .enable = mc13892_gpo_regulator_enable, | |
395 | .disable = mc13892_gpo_regulator_disable, | |
396 | .is_enabled = mc13892_gpo_regulator_is_enabled, | |
397 | .list_voltage = mc13xxx_regulator_list_voltage, | |
398 | .set_voltage = mc13xxx_fixed_regulator_set_voltage, | |
399 | .get_voltage = mc13xxx_fixed_regulator_get_voltage, | |
400 | }; | |
401 | ||
402 | static int mc13892_sw_regulator_get_voltage(struct regulator_dev *rdev) | |
403 | { | |
404 | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | |
405 | int ret, id = rdev_get_id(rdev); | |
406 | unsigned int val, hi; | |
407 | ||
408 | dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id); | |
409 | ||
410 | mc13xxx_lock(priv->mc13xxx); | |
411 | ret = mc13xxx_reg_read(priv->mc13xxx, | |
412 | mc13892_regulators[id].vsel_reg, &val); | |
413 | mc13xxx_unlock(priv->mc13xxx); | |
414 | if (ret) | |
415 | return ret; | |
416 | ||
417 | hi = val & MC13892_SWITCHERS0_SWxHI; | |
418 | val = (val & mc13892_regulators[id].vsel_mask) | |
419 | >> mc13892_regulators[id].vsel_shift; | |
420 | ||
421 | dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val); | |
422 | ||
423 | if (hi) | |
424 | val = (25000 * val) + 1100000; | |
425 | else | |
426 | val = (25000 * val) + 600000; | |
427 | ||
428 | return val; | |
429 | } | |
430 | ||
431 | static int mc13892_sw_regulator_set_voltage(struct regulator_dev *rdev, | |
432 | int min_uV, int max_uV, unsigned *selector) | |
433 | { | |
434 | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | |
435 | int hi, value, val, mask, id = rdev_get_id(rdev); | |
436 | int ret; | |
437 | ||
438 | dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n", | |
439 | __func__, id, min_uV, max_uV); | |
440 | ||
441 | /* Find the best index */ | |
442 | value = mc13xxx_get_best_voltage_index(rdev, min_uV, max_uV); | |
443 | dev_dbg(rdev_get_dev(rdev), "%s best value: %d\n", __func__, value); | |
444 | if (value < 0) | |
445 | return value; | |
446 | ||
447 | value = mc13892_regulators[id].voltages[value]; | |
448 | ||
449 | mc13xxx_lock(priv->mc13xxx); | |
450 | ret = mc13xxx_reg_read(priv->mc13xxx, | |
451 | mc13892_regulators[id].vsel_reg, &val); | |
452 | if (ret) | |
453 | goto err; | |
454 | ||
455 | hi = val & MC13892_SWITCHERS0_SWxHI; | |
456 | if (value > 1375) | |
457 | hi = 1; | |
458 | if (value < 1100) | |
459 | hi = 0; | |
460 | ||
461 | if (hi) { | |
462 | value = (value - 1100000) / 25000; | |
463 | value |= MC13892_SWITCHERS0_SWxHI; | |
464 | } else | |
465 | value = (value - 600000) / 25000; | |
466 | ||
467 | mask = mc13892_regulators[id].vsel_mask | MC13892_SWITCHERS0_SWxHI; | |
468 | ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13892_regulators[id].vsel_reg, | |
469 | mask, value << mc13892_regulators[id].vsel_shift); | |
470 | err: | |
471 | mc13xxx_unlock(priv->mc13xxx); | |
472 | ||
473 | return ret; | |
474 | } | |
475 | ||
476 | static struct regulator_ops mc13892_sw_regulator_ops = { | |
477 | .is_enabled = mc13xxx_sw_regulator_is_enabled, | |
478 | .list_voltage = mc13xxx_regulator_list_voltage, | |
479 | .set_voltage = mc13892_sw_regulator_set_voltage, | |
480 | .get_voltage = mc13892_sw_regulator_get_voltage, | |
481 | }; | |
482 | ||
483 | static int mc13892_vcam_set_mode(struct regulator_dev *rdev, unsigned int mode) | |
484 | { | |
485 | unsigned int en_val = 0; | |
486 | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | |
487 | int ret, id = rdev_get_id(rdev); | |
488 | ||
489 | if (mode == REGULATOR_MODE_FAST) | |
490 | en_val = MC13892_REGULATORMODE1_VCAMCONFIGEN; | |
491 | ||
492 | mc13xxx_lock(priv->mc13xxx); | |
493 | ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13892_regulators[id].reg, | |
494 | MC13892_REGULATORMODE1_VCAMCONFIGEN, en_val); | |
495 | mc13xxx_unlock(priv->mc13xxx); | |
496 | ||
497 | return ret; | |
498 | } | |
499 | ||
27315cf6 | 500 | static unsigned int mc13892_vcam_get_mode(struct regulator_dev *rdev) |
5e428d5c YS |
501 | { |
502 | struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev); | |
503 | int ret, id = rdev_get_id(rdev); | |
504 | unsigned int val; | |
505 | ||
506 | mc13xxx_lock(priv->mc13xxx); | |
507 | ret = mc13xxx_reg_read(priv->mc13xxx, mc13892_regulators[id].reg, &val); | |
508 | mc13xxx_unlock(priv->mc13xxx); | |
509 | ||
510 | if (ret) | |
511 | return ret; | |
512 | ||
513 | if (val & MC13892_REGULATORMODE1_VCAMCONFIGEN) | |
514 | return REGULATOR_MODE_FAST; | |
515 | ||
516 | return REGULATOR_MODE_NORMAL; | |
517 | } | |
518 | ||
519 | ||
520 | static int __devinit mc13892_regulator_probe(struct platform_device *pdev) | |
521 | { | |
522 | struct mc13xxx_regulator_priv *priv; | |
523 | struct mc13xxx *mc13892 = dev_get_drvdata(pdev->dev.parent); | |
4ec1b54c | 524 | struct mc13xxx_regulator_platform_data *pdata = mfd_get_data(pdev); |
5e428d5c YS |
525 | struct mc13xxx_regulator_init_data *init_data; |
526 | int i, ret; | |
527 | u32 val; | |
528 | ||
529 | priv = kzalloc(sizeof(*priv) + | |
530 | pdata->num_regulators * sizeof(priv->regulators[0]), | |
531 | GFP_KERNEL); | |
532 | if (!priv) | |
533 | return -ENOMEM; | |
534 | ||
535 | priv->mc13xxx_regulators = mc13892_regulators; | |
536 | priv->mc13xxx = mc13892; | |
537 | ||
538 | mc13xxx_lock(mc13892); | |
539 | ret = mc13xxx_reg_read(mc13892, MC13892_REVISION, &val); | |
540 | if (ret) | |
541 | goto err_free; | |
542 | ||
543 | /* enable switch auto mode */ | |
544 | if ((val & 0x0000FFFF) == 0x45d0) { | |
545 | ret = mc13xxx_reg_rmw(mc13892, MC13892_SWITCHERS4, | |
546 | MC13892_SWITCHERS4_SW1MODE_M | | |
547 | MC13892_SWITCHERS4_SW2MODE_M, | |
548 | MC13892_SWITCHERS4_SW1MODE_AUTO | | |
549 | MC13892_SWITCHERS4_SW2MODE_AUTO); | |
550 | if (ret) | |
551 | goto err_free; | |
552 | ||
923430cf | 553 | ret = mc13xxx_reg_rmw(mc13892, MC13892_SWITCHERS5, |
5e428d5c YS |
554 | MC13892_SWITCHERS5_SW3MODE_M | |
555 | MC13892_SWITCHERS5_SW4MODE_M, | |
556 | MC13892_SWITCHERS5_SW3MODE_AUTO | | |
557 | MC13892_SWITCHERS5_SW4MODE_AUTO); | |
558 | if (ret) | |
559 | goto err_free; | |
560 | } | |
561 | mc13xxx_unlock(mc13892); | |
562 | ||
563 | mc13892_regulators[MC13892_VCAM].desc.ops->set_mode | |
564 | = mc13892_vcam_set_mode; | |
565 | mc13892_regulators[MC13892_VCAM].desc.ops->get_mode | |
566 | = mc13892_vcam_get_mode; | |
567 | for (i = 0; i < pdata->num_regulators; i++) { | |
568 | init_data = &pdata->regulators[i]; | |
569 | priv->regulators[i] = regulator_register( | |
570 | &mc13892_regulators[init_data->id].desc, | |
571 | &pdev->dev, init_data->init_data, priv); | |
572 | ||
573 | if (IS_ERR(priv->regulators[i])) { | |
574 | dev_err(&pdev->dev, "failed to register regulator %s\n", | |
575 | mc13892_regulators[i].desc.name); | |
576 | ret = PTR_ERR(priv->regulators[i]); | |
577 | goto err; | |
578 | } | |
579 | } | |
580 | ||
581 | platform_set_drvdata(pdev, priv); | |
582 | ||
583 | return 0; | |
584 | err: | |
585 | while (--i >= 0) | |
586 | regulator_unregister(priv->regulators[i]); | |
587 | ||
588 | err_free: | |
589 | mc13xxx_unlock(mc13892); | |
590 | kfree(priv); | |
591 | ||
592 | return ret; | |
593 | } | |
594 | ||
595 | static int __devexit mc13892_regulator_remove(struct platform_device *pdev) | |
596 | { | |
597 | struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev); | |
4ec1b54c | 598 | struct mc13xxx_regulator_platform_data *pdata = mfd_get_data(pdev); |
5e428d5c YS |
599 | int i; |
600 | ||
601 | platform_set_drvdata(pdev, NULL); | |
602 | ||
603 | for (i = 0; i < pdata->num_regulators; i++) | |
604 | regulator_unregister(priv->regulators[i]); | |
605 | ||
606 | kfree(priv); | |
607 | return 0; | |
608 | } | |
609 | ||
610 | static struct platform_driver mc13892_regulator_driver = { | |
611 | .driver = { | |
612 | .name = "mc13892-regulator", | |
613 | .owner = THIS_MODULE, | |
614 | }, | |
615 | .remove = __devexit_p(mc13892_regulator_remove), | |
616 | .probe = mc13892_regulator_probe, | |
617 | }; | |
618 | ||
619 | static int __init mc13892_regulator_init(void) | |
620 | { | |
621 | return platform_driver_register(&mc13892_regulator_driver); | |
622 | } | |
623 | subsys_initcall(mc13892_regulator_init); | |
624 | ||
625 | static void __exit mc13892_regulator_exit(void) | |
626 | { | |
627 | platform_driver_unregister(&mc13892_regulator_driver); | |
628 | } | |
629 | module_exit(mc13892_regulator_exit); | |
630 | ||
631 | MODULE_LICENSE("GPL v2"); | |
632 | MODULE_AUTHOR("Yong Shen <yong.shen@linaro.org>"); | |
633 | MODULE_DESCRIPTION("Regulator Driver for Freescale MC13892 PMIC"); | |
634 | MODULE_ALIAS("platform:mc13892-regulator"); |