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-rw-r--r--drivers/regulator/tps80031-regulator.c793
1 files changed, 793 insertions, 0 deletions
diff --git a/drivers/regulator/tps80031-regulator.c b/drivers/regulator/tps80031-regulator.c
new file mode 100644
index 000000000000..a37ede80abbf
--- /dev/null
+++ b/drivers/regulator/tps80031-regulator.c
@@ -0,0 +1,793 @@
1/*
2 * tps80031-regulator.c -- TI TPS80031 regulator driver.
3 *
4 * Regulator driver for TITPS80031/TPS80032 Fully Integrated Power
5 * Management with Power Path and Battery Charger.
6 *
7 * Copyright (c) 2012, NVIDIA Corporation.
8 *
9 * Author: Laxman Dewangan <ldewangan@nvidia.com>
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation version 2.
14 *
15 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
16 * whether express or implied; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 * 02111-1307, USA
24 */
25
26#include <linux/delay.h>
27#include <linux/err.h>
28#include <linux/init.h>
29#include <linux/kernel.h>
30#include <linux/mfd/tps80031.h>
31#include <linux/module.h>
32#include <linux/platform_device.h>
33#include <linux/regulator/driver.h>
34#include <linux/regulator/machine.h>
35#include <linux/slab.h>
36
37/* Flags for DCDC Voltage reading */
38#define DCDC_OFFSET_EN BIT(0)
39#define DCDC_EXTENDED_EN BIT(1)
40#define TRACK_MODE_ENABLE BIT(2)
41
42#define SMPS_MULTOFFSET_VIO BIT(1)
43#define SMPS_MULTOFFSET_SMPS1 BIT(3)
44#define SMPS_MULTOFFSET_SMPS2 BIT(4)
45#define SMPS_MULTOFFSET_SMPS3 BIT(6)
46#define SMPS_MULTOFFSET_SMPS4 BIT(0)
47
48#define SMPS_CMD_MASK 0xC0
49#define SMPS_VSEL_MASK 0x3F
50#define LDO_VSEL_MASK 0x1F
51#define LDO_TRACK_VSEL_MASK 0x3F
52
53#define MISC2_LDOUSB_IN_VSYS BIT(4)
54#define MISC2_LDOUSB_IN_PMID BIT(3)
55#define MISC2_LDOUSB_IN_MASK 0x18
56
57#define MISC2_LDO3_SEL_VIB_VAL BIT(0)
58#define MISC2_LDO3_SEL_VIB_MASK 0x1
59
60#define BOOST_HW_PWR_EN BIT(5)
61#define BOOST_HW_PWR_EN_MASK BIT(5)
62
63#define OPA_MODE_EN BIT(6)
64#define OPA_MODE_EN_MASK BIT(6)
65
66#define USB_VBUS_CTRL_SET 0x04
67#define USB_VBUS_CTRL_CLR 0x05
68#define VBUS_DISCHRG 0x20
69
70struct tps80031_regulator_info {
71 /* Regulator register address.*/
72 u8 trans_reg;
73 u8 state_reg;
74 u8 force_reg;
75 u8 volt_reg;
76 u8 volt_id;
77
78 /*Power request bits */
79 int preq_bit;
80
81 /* used by regulator core */
82 struct regulator_desc desc;
83
84};
85
86struct tps80031_regulator {
87 struct device *dev;
88 struct regulator_dev *rdev;
89 struct tps80031_regulator_info *rinfo;
90
91 u8 device_flags;
92 unsigned int config_flags;
93 unsigned int ext_ctrl_flag;
94};
95
96static inline struct device *to_tps80031_dev(struct regulator_dev *rdev)
97{
98 return rdev_get_dev(rdev)->parent->parent;
99}
100
101static int tps80031_reg_is_enabled(struct regulator_dev *rdev)
102{
103 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
104 struct device *parent = to_tps80031_dev(rdev);
105 u8 reg_val;
106 int ret;
107
108 if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
109 return true;
110
111 ret = tps80031_read(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
112 &reg_val);
113 if (ret < 0) {
114 dev_err(&rdev->dev, "Reg 0x%02x read failed, err = %d\n",
115 ri->rinfo->state_reg, ret);
116 return ret;
117 }
118 return ((reg_val & TPS80031_STATE_MASK) == TPS80031_STATE_ON);
119}
120
121static int tps80031_reg_enable(struct regulator_dev *rdev)
122{
123 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
124 struct device *parent = to_tps80031_dev(rdev);
125 int ret;
126
127 if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
128 return 0;
129
130 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
131 TPS80031_STATE_ON, TPS80031_STATE_MASK);
132 if (ret < 0) {
133 dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
134 ri->rinfo->state_reg, ret);
135 return ret;
136 }
137 return ret;
138}
139
140static int tps80031_reg_disable(struct regulator_dev *rdev)
141{
142 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
143 struct device *parent = to_tps80031_dev(rdev);
144 int ret;
145
146 if (ri->ext_ctrl_flag & TPS80031_EXT_PWR_REQ)
147 return 0;
148
149 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->state_reg,
150 TPS80031_STATE_OFF, TPS80031_STATE_MASK);
151 if (ret < 0)
152 dev_err(&rdev->dev, "Reg 0x%02x update failed, err = %d\n",
153 ri->rinfo->state_reg, ret);
154 return ret;
155}
156
157/* DCDC voltages for the selector of 58 to 63 */
158static int tps80031_dcdc_voltages[4][5] = {
159 { 1350, 1500, 1800, 1900, 2100},
160 { 1350, 1500, 1800, 1900, 2100},
161 { 2084, 2315, 2778, 2932, 3241},
162 { 4167, 2315, 2778, 2932, 3241},
163};
164
165static int tps80031_dcdc_list_voltage(struct regulator_dev *rdev, unsigned sel)
166{
167 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
168 int volt_index = ri->device_flags & 0x3;
169
170 if (sel == 0)
171 return 0;
172 else if (sel < 58)
173 return regulator_list_voltage_linear(rdev, sel - 1);
174 else
175 return tps80031_dcdc_voltages[volt_index][sel - 58] * 1000;
176}
177
178static int tps80031_dcdc_set_voltage_sel(struct regulator_dev *rdev,
179 unsigned vsel)
180{
181 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
182 struct device *parent = to_tps80031_dev(rdev);
183 int ret;
184 u8 reg_val;
185
186 if (ri->rinfo->force_reg) {
187 ret = tps80031_read(parent, ri->rinfo->volt_id,
188 ri->rinfo->force_reg, &reg_val);
189 if (ret < 0) {
190 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
191 ri->rinfo->force_reg, ret);
192 return ret;
193 }
194 if (!(reg_val & SMPS_CMD_MASK)) {
195 ret = tps80031_update(parent, ri->rinfo->volt_id,
196 ri->rinfo->force_reg, vsel, SMPS_VSEL_MASK);
197 if (ret < 0)
198 dev_err(ri->dev,
199 "reg 0x%02x update failed, e = %d\n",
200 ri->rinfo->force_reg, ret);
201 return ret;
202 }
203 }
204 ret = tps80031_update(parent, ri->rinfo->volt_id,
205 ri->rinfo->volt_reg, vsel, SMPS_VSEL_MASK);
206 if (ret < 0)
207 dev_err(ri->dev, "reg 0x%02x update failed, e = %d\n",
208 ri->rinfo->volt_reg, ret);
209 return ret;
210}
211
212static int tps80031_dcdc_get_voltage_sel(struct regulator_dev *rdev)
213{
214 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
215 struct device *parent = to_tps80031_dev(rdev);
216 uint8_t vsel = 0;
217 int ret;
218
219 if (ri->rinfo->force_reg) {
220 ret = tps80031_read(parent, ri->rinfo->volt_id,
221 ri->rinfo->force_reg, &vsel);
222 if (ret < 0) {
223 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
224 ri->rinfo->force_reg, ret);
225 return ret;
226 }
227
228 if (!(vsel & SMPS_CMD_MASK))
229 return vsel & SMPS_VSEL_MASK;
230 }
231 ret = tps80031_read(parent, ri->rinfo->volt_id,
232 ri->rinfo->volt_reg, &vsel);
233 if (ret < 0) {
234 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
235 ri->rinfo->volt_reg, ret);
236 return ret;
237 }
238 return vsel & SMPS_VSEL_MASK;
239}
240
241static int tps80031_ldo_set_voltage_sel(struct regulator_dev *rdev,
242 unsigned sel)
243{
244 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
245 struct device *parent = to_tps80031_dev(rdev);
246 int ret;
247
248 /* Check for valid setting for TPS80031 or TPS80032-ES1.0 */
249 if ((ri->rinfo->desc.id == TPS80031_REGULATOR_LDO2) &&
250 (ri->device_flags & TRACK_MODE_ENABLE)) {
251 unsigned nvsel = (sel) & 0x1F;
252 if (((tps80031_get_chip_info(parent) == TPS80031) ||
253 ((tps80031_get_chip_info(parent) == TPS80032) &&
254 (tps80031_get_pmu_version(parent) == 0x0))) &&
255 ((nvsel == 0x0) || (nvsel >= 0x19 && nvsel <= 0x1F))) {
256 dev_err(ri->dev,
257 "Invalid sel %d in track mode LDO2\n",
258 nvsel);
259 return -EINVAL;
260 }
261 }
262
263 ret = tps80031_write(parent, ri->rinfo->volt_id,
264 ri->rinfo->volt_reg, sel);
265 if (ret < 0)
266 dev_err(ri->dev, "Error in writing reg 0x%02x, e = %d\n",
267 ri->rinfo->volt_reg, ret);
268 return ret;
269}
270
271static int tps80031_ldo_get_voltage_sel(struct regulator_dev *rdev)
272{
273 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
274 struct device *parent = to_tps80031_dev(rdev);
275 uint8_t vsel;
276 int ret;
277
278 ret = tps80031_read(parent, ri->rinfo->volt_id,
279 ri->rinfo->volt_reg, &vsel);
280 if (ret < 0) {
281 dev_err(ri->dev, "Error in writing the Voltage register\n");
282 return ret;
283 }
284 return vsel & rdev->desc->vsel_mask;
285}
286
287static int tps80031_ldo_list_voltage(struct regulator_dev *rdev, unsigned sel)
288{
289 if (sel == 0)
290 return 0;
291 else
292 return regulator_list_voltage_linear(rdev, sel - 1);
293}
294
295static int tps80031_vbus_is_enabled(struct regulator_dev *rdev)
296{
297 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
298 struct device *parent = to_tps80031_dev(rdev);
299 int ret = -EIO;
300 uint8_t ctrl1 = 0;
301 uint8_t ctrl3 = 0;
302
303 ret = tps80031_read(parent, TPS80031_SLAVE_ID2,
304 TPS80031_CHARGERUSB_CTRL1, &ctrl1);
305 if (ret < 0) {
306 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
307 TPS80031_CHARGERUSB_CTRL1, ret);
308 return ret;
309 }
310 ret = tps80031_read(parent, TPS80031_SLAVE_ID2,
311 TPS80031_CHARGERUSB_CTRL3, &ctrl3);
312 if (ret < 0) {
313 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
314 TPS80031_CHARGERUSB_CTRL1, ret);
315 return ret;
316 }
317 if ((ctrl1 & OPA_MODE_EN) && (ctrl3 & BOOST_HW_PWR_EN))
318 return 1;
319 return ret;
320}
321
322static int tps80031_vbus_enable(struct regulator_dev *rdev)
323{
324 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
325 struct device *parent = to_tps80031_dev(rdev);
326 int ret;
327
328 ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2,
329 TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
330 if (ret < 0) {
331 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
332 TPS80031_CHARGERUSB_CTRL1, ret);
333 return ret;
334 }
335
336 ret = tps80031_set_bits(parent, TPS80031_SLAVE_ID2,
337 TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
338 if (ret < 0) {
339 dev_err(ri->dev, "reg 0x%02x read failed, e = %d\n",
340 TPS80031_CHARGERUSB_CTRL3, ret);
341 return ret;
342 }
343 return ret;
344}
345
346static int tps80031_vbus_disable(struct regulator_dev *rdev)
347{
348 struct tps80031_regulator *ri = rdev_get_drvdata(rdev);
349 struct device *parent = to_tps80031_dev(rdev);
350 int ret = 0;
351
352 if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) {
353 ret = tps80031_write(parent, TPS80031_SLAVE_ID2,
354 USB_VBUS_CTRL_SET, VBUS_DISCHRG);
355 if (ret < 0) {
356 dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
357 USB_VBUS_CTRL_SET, ret);
358 return ret;
359 }
360 }
361
362 ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2,
363 TPS80031_CHARGERUSB_CTRL1, OPA_MODE_EN);
364 if (ret < 0) {
365 dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
366 TPS80031_CHARGERUSB_CTRL1, ret);
367 return ret;
368 }
369
370 ret = tps80031_clr_bits(parent, TPS80031_SLAVE_ID2,
371 TPS80031_CHARGERUSB_CTRL3, BOOST_HW_PWR_EN);
372 if (ret < 0) {
373 dev_err(ri->dev, "reg 0x%02x clearbit failed, e = %d\n",
374 TPS80031_CHARGERUSB_CTRL3, ret);
375 return ret;
376 }
377
378 mdelay(DIV_ROUND_UP(ri->rinfo->desc.enable_time, 1000));
379 if (ri->config_flags & TPS80031_VBUS_DISCHRG_EN_PDN) {
380 ret = tps80031_write(parent, TPS80031_SLAVE_ID2,
381 USB_VBUS_CTRL_CLR, VBUS_DISCHRG);
382 if (ret < 0) {
383 dev_err(ri->dev, "reg 0x%02x write failed, e = %d\n",
384 USB_VBUS_CTRL_CLR, ret);
385 return ret;
386 }
387 }
388 return ret;
389}
390
391static struct regulator_ops tps80031_dcdc_ops = {
392 .list_voltage = tps80031_dcdc_list_voltage,
393 .set_voltage_sel = tps80031_dcdc_set_voltage_sel,
394 .get_voltage_sel = tps80031_dcdc_get_voltage_sel,
395 .enable = tps80031_reg_enable,
396 .disable = tps80031_reg_disable,
397 .is_enabled = tps80031_reg_is_enabled,
398};
399
400static struct regulator_ops tps80031_ldo_ops = {
401 .list_voltage = tps80031_ldo_list_voltage,
402 .set_voltage_sel = tps80031_ldo_set_voltage_sel,
403 .get_voltage_sel = tps80031_ldo_get_voltage_sel,
404 .enable = tps80031_reg_enable,
405 .disable = tps80031_reg_disable,
406 .is_enabled = tps80031_reg_is_enabled,
407};
408
409static struct regulator_ops tps80031_vbus_sw_ops = {
410 .enable = tps80031_vbus_enable,
411 .disable = tps80031_vbus_disable,
412 .is_enabled = tps80031_vbus_is_enabled,
413};
414
415static struct regulator_ops tps80031_vbus_hw_ops = {
416};
417
418static struct regulator_ops tps80031_ext_reg_ops = {
419 .enable = tps80031_reg_enable,
420 .disable = tps80031_reg_disable,
421 .is_enabled = tps80031_reg_is_enabled,
422};
423
424/* Non-exiting default definition for some register */
425#define TPS80031_SMPS3_CFG_FORCE 0
426#define TPS80031_SMPS4_CFG_FORCE 0
427
428#define TPS80031_VBUS_CFG_TRANS 0
429#define TPS80031_VBUS_CFG_STATE 0
430
431#define TPS80031_REG_SMPS(_id, _volt_id, _pbit) \
432{ \
433 .trans_reg = TPS80031_##_id##_CFG_TRANS, \
434 .state_reg = TPS80031_##_id##_CFG_STATE, \
435 .force_reg = TPS80031_##_id##_CFG_FORCE, \
436 .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \
437 .volt_id = TPS80031_SLAVE_##_volt_id, \
438 .preq_bit = _pbit, \
439 .desc = { \
440 .name = "tps80031_"#_id, \
441 .id = TPS80031_REGULATOR_##_id, \
442 .n_voltages = 63, \
443 .ops = &tps80031_dcdc_ops, \
444 .type = REGULATOR_VOLTAGE, \
445 .owner = THIS_MODULE, \
446 .enable_time = 500, \
447 }, \
448}
449
450#define TPS80031_REG_LDO(_id, _preq_bit) \
451{ \
452 .trans_reg = TPS80031_##_id##_CFG_TRANS, \
453 .state_reg = TPS80031_##_id##_CFG_STATE, \
454 .volt_reg = TPS80031_##_id##_CFG_VOLTAGE, \
455 .volt_id = TPS80031_SLAVE_ID1, \
456 .preq_bit = _preq_bit, \
457 .desc = { \
458 .owner = THIS_MODULE, \
459 .name = "tps80031_"#_id, \
460 .id = TPS80031_REGULATOR_##_id, \
461 .ops = &tps80031_ldo_ops, \
462 .type = REGULATOR_VOLTAGE, \
463 .min_uV = 1000000, \
464 .uV_step = 100000, \
465 .n_voltages = 25, \
466 .vsel_mask = LDO_VSEL_MASK, \
467 .enable_time = 500, \
468 }, \
469}
470
471#define TPS80031_REG_FIXED(_id, max_mV, _ops, _delay, _pbit) \
472{ \
473 .trans_reg = TPS80031_##_id##_CFG_TRANS, \
474 .state_reg = TPS80031_##_id##_CFG_STATE, \
475 .volt_id = TPS80031_SLAVE_ID1, \
476 .preq_bit = _pbit, \
477 .desc = { \
478 .name = "tps80031_"#_id, \
479 .id = TPS80031_REGULATOR_##_id, \
480 .n_voltages = 2, \
481 .ops = &_ops, \
482 .type = REGULATOR_VOLTAGE, \
483 .owner = THIS_MODULE, \
484 .enable_time = _delay, \
485 }, \
486}
487
488static struct tps80031_regulator_info tps80031_rinfo[TPS80031_REGULATOR_MAX] = {
489 TPS80031_REG_SMPS(VIO, ID0, 4),
490 TPS80031_REG_SMPS(SMPS1, ID0, 0),
491 TPS80031_REG_SMPS(SMPS2, ID0, 1),
492 TPS80031_REG_SMPS(SMPS3, ID1, 2),
493 TPS80031_REG_SMPS(SMPS4, ID1, 3),
494 TPS80031_REG_LDO(VANA, -1),
495 TPS80031_REG_LDO(LDO1, 8),
496 TPS80031_REG_LDO(LDO2, 9),
497 TPS80031_REG_LDO(LDO3, 10),
498 TPS80031_REG_LDO(LDO4, 11),
499 TPS80031_REG_LDO(LDO5, 12),
500 TPS80031_REG_LDO(LDO6, 13),
501 TPS80031_REG_LDO(LDO7, 14),
502 TPS80031_REG_LDO(LDOLN, 15),
503 TPS80031_REG_LDO(LDOUSB, 5),
504 TPS80031_REG_FIXED(VBUS, 5000, tps80031_vbus_hw_ops, 100000, -1),
505 TPS80031_REG_FIXED(REGEN1, 3300, tps80031_ext_reg_ops, 0, 16),
506 TPS80031_REG_FIXED(REGEN2, 3300, tps80031_ext_reg_ops, 0, 17),
507 TPS80031_REG_FIXED(SYSEN, 3300, tps80031_ext_reg_ops, 0, 18),
508};
509
510static int tps80031_power_req_config(struct device *parent,
511 struct tps80031_regulator *ri,
512 struct tps80031_regulator_platform_data *tps80031_pdata)
513{
514 int ret = 0;
515
516 if (ri->rinfo->preq_bit < 0)
517 goto skip_pwr_req_config;
518
519 ret = tps80031_ext_power_req_config(parent, ri->ext_ctrl_flag,
520 ri->rinfo->preq_bit, ri->rinfo->state_reg,
521 ri->rinfo->trans_reg);
522 if (ret < 0) {
523 dev_err(ri->dev, "ext powerreq config failed, err = %d\n", ret);
524 return ret;
525 }
526
527skip_pwr_req_config:
528 if (tps80031_pdata->ext_ctrl_flag & TPS80031_PWR_ON_ON_SLEEP) {
529 ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
530 ri->rinfo->trans_reg, TPS80031_TRANS_SLEEP_ON,
531 TPS80031_TRANS_SLEEP_MASK);
532 if (ret < 0) {
533 dev_err(ri->dev, "Reg 0x%02x update failed, e %d\n",
534 ri->rinfo->trans_reg, ret);
535 return ret;
536 }
537 }
538 return ret;
539}
540
541static int tps80031_regulator_config(struct device *parent,
542 struct tps80031_regulator *ri,
543 struct tps80031_regulator_platform_data *tps80031_pdata)
544{
545 int ret = 0;
546
547 switch (ri->rinfo->desc.id) {
548 case TPS80031_REGULATOR_LDOUSB:
549 if (ri->config_flags & (TPS80031_USBLDO_INPUT_VSYS |
550 TPS80031_USBLDO_INPUT_PMID)) {
551 unsigned val = 0;
552 if (ri->config_flags & TPS80031_USBLDO_INPUT_VSYS)
553 val = MISC2_LDOUSB_IN_VSYS;
554 else
555 val = MISC2_LDOUSB_IN_PMID;
556
557 ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
558 TPS80031_MISC2, val,
559 MISC2_LDOUSB_IN_MASK);
560 if (ret < 0) {
561 dev_err(ri->dev,
562 "LDOUSB config failed, e= %d\n", ret);
563 return ret;
564 }
565 }
566 break;
567
568 case TPS80031_REGULATOR_LDO3:
569 if (ri->config_flags & TPS80031_LDO3_OUTPUT_VIB) {
570 ret = tps80031_update(parent, TPS80031_SLAVE_ID1,
571 TPS80031_MISC2, MISC2_LDO3_SEL_VIB_VAL,
572 MISC2_LDO3_SEL_VIB_MASK);
573 if (ret < 0) {
574 dev_err(ri->dev,
575 "LDO3 config failed, e = %d\n", ret);
576 return ret;
577 }
578 }
579 break;
580
581 case TPS80031_REGULATOR_VBUS:
582 /* Provide SW control Ops if VBUS is SW control */
583 if (!(ri->config_flags & TPS80031_VBUS_SW_ONLY))
584 ri->rinfo->desc.ops = &tps80031_vbus_sw_ops;
585 break;
586 default:
587 break;
588 }
589
590 /* Configure Active state to ON, SLEEP to OFF and OFF_state to OFF */
591 ret = tps80031_update(parent, TPS80031_SLAVE_ID1, ri->rinfo->trans_reg,
592 TPS80031_TRANS_ACTIVE_ON | TPS80031_TRANS_SLEEP_OFF |
593 TPS80031_TRANS_OFF_OFF, TPS80031_TRANS_ACTIVE_MASK |
594 TPS80031_TRANS_SLEEP_MASK | TPS80031_TRANS_OFF_MASK);
595 if (ret < 0) {
596 dev_err(ri->dev, "trans reg update failed, e %d\n", ret);
597 return ret;
598 }
599
600 return ret;
601}
602
603static int check_smps_mode_mult(struct device *parent,
604 struct tps80031_regulator *ri)
605{
606 int mult_offset;
607 int ret;
608 u8 smps_offset;
609 u8 smps_mult;
610
611 ret = tps80031_read(parent, TPS80031_SLAVE_ID1,
612 TPS80031_SMPS_OFFSET, &smps_offset);
613 if (ret < 0) {
614 dev_err(parent, "Error in reading smps offset register\n");
615 return ret;
616 }
617
618 ret = tps80031_read(parent, TPS80031_SLAVE_ID1,
619 TPS80031_SMPS_MULT, &smps_mult);
620 if (ret < 0) {
621 dev_err(parent, "Error in reading smps mult register\n");
622 return ret;
623 }
624
625 switch (ri->rinfo->desc.id) {
626 case TPS80031_REGULATOR_VIO:
627 mult_offset = SMPS_MULTOFFSET_VIO;
628 break;
629 case TPS80031_REGULATOR_SMPS1:
630 mult_offset = SMPS_MULTOFFSET_SMPS1;
631 break;
632 case TPS80031_REGULATOR_SMPS2:
633 mult_offset = SMPS_MULTOFFSET_SMPS2;
634 break;
635 case TPS80031_REGULATOR_SMPS3:
636 mult_offset = SMPS_MULTOFFSET_SMPS3;
637 break;
638 case TPS80031_REGULATOR_SMPS4:
639 mult_offset = SMPS_MULTOFFSET_SMPS4;
640 break;
641 case TPS80031_REGULATOR_LDO2:
642 ri->device_flags = smps_mult & BIT(5) ? TRACK_MODE_ENABLE : 0;
643 /* TRACK mode the ldo2 varies from 600mV to 1300mV */
644 if (ri->device_flags & TRACK_MODE_ENABLE) {
645 ri->rinfo->desc.min_uV = 600000;
646 ri->rinfo->desc.uV_step = 12500;
647 ri->rinfo->desc.n_voltages = 57;
648 ri->rinfo->desc.vsel_mask = LDO_TRACK_VSEL_MASK;
649 }
650 return 0;
651 default:
652 return 0;
653 }
654
655 ri->device_flags = (smps_offset & mult_offset) ? DCDC_OFFSET_EN : 0;
656 ri->device_flags |= (smps_mult & mult_offset) ? DCDC_EXTENDED_EN : 0;
657 switch (ri->device_flags) {
658 case 0:
659 ri->rinfo->desc.min_uV = 607700;
660 ri->rinfo->desc.uV_step = 12660;
661 break;
662 case DCDC_OFFSET_EN:
663 ri->rinfo->desc.min_uV = 700000;
664 ri->rinfo->desc.uV_step = 12500;
665 break;
666 case DCDC_EXTENDED_EN:
667 ri->rinfo->desc.min_uV = 1852000;
668 ri->rinfo->desc.uV_step = 38600;
669 break;
670 case DCDC_OFFSET_EN | DCDC_EXTENDED_EN:
671 ri->rinfo->desc.min_uV = 2161000;
672 ri->rinfo->desc.uV_step = 38600;
673 break;
674 }
675 return 0;
676}
677
678static int __devinit tps80031_regulator_probe(struct platform_device *pdev)
679{
680 struct tps80031_platform_data *pdata;
681 struct tps80031_regulator_platform_data *tps_pdata;
682 struct tps80031_regulator_info *rinfo;
683 struct tps80031_regulator *ri;
684 struct tps80031_regulator *pmic;
685 struct regulator_dev *rdev;
686 struct regulator_config config = { };
687 int ret;
688 int num;
689
690 pdata = dev_get_platdata(pdev->dev.parent);
691
692 if (!pdata) {
693 dev_err(&pdev->dev, "No platform data\n");
694 return -EINVAL;
695 }
696
697 pmic = devm_kzalloc(&pdev->dev,
698 TPS80031_REGULATOR_MAX * sizeof(*pmic), GFP_KERNEL);
699 if (!pmic) {
700 dev_err(&pdev->dev, "mem alloc for pmic failed\n");
701 return -ENOMEM;
702 }
703
704 for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) {
705 tps_pdata = pdata->regulator_pdata[num];
706 rinfo = &tps80031_rinfo[num];
707 ri = &pmic[num];
708 ri->rinfo = rinfo;
709 ri->dev = &pdev->dev;
710
711 check_smps_mode_mult(pdev->dev.parent, ri);
712 config.dev = &pdev->dev;
713 config.init_data = NULL;
714 config.driver_data = ri;
715 if (tps_pdata) {
716 config.init_data = tps_pdata->reg_init_data;
717 ri->config_flags = tps_pdata->config_flags;
718 ri->ext_ctrl_flag = tps_pdata->ext_ctrl_flag;
719 ret = tps80031_regulator_config(pdev->dev.parent,
720 ri, tps_pdata);
721 if (ret < 0) {
722 dev_err(&pdev->dev,
723 "regulator config failed, e %d\n", ret);
724 goto fail;
725 }
726
727 ret = tps80031_power_req_config(pdev->dev.parent,
728 ri, tps_pdata);
729 if (ret < 0) {
730 dev_err(&pdev->dev,
731 "pwr_req config failed, err %d\n", ret);
732 goto fail;
733 }
734 }
735 rdev = regulator_register(&ri->rinfo->desc, &config);
736 if (IS_ERR_OR_NULL(rdev)) {
737 dev_err(&pdev->dev,
738 "register regulator failed %s\n",
739 ri->rinfo->desc.name);
740 ret = PTR_ERR(rdev);
741 goto fail;
742 }
743 ri->rdev = rdev;
744 }
745
746 platform_set_drvdata(pdev, pmic);
747 return 0;
748fail:
749 while (--num >= 0) {
750 ri = &pmic[num];
751 regulator_unregister(ri->rdev);
752 }
753 return ret;
754}
755
756static int __devexit tps80031_regulator_remove(struct platform_device *pdev)
757{
758 struct tps80031_regulator *pmic = platform_get_drvdata(pdev);
759 struct tps80031_regulator *ri = NULL;
760 int num;
761
762 for (num = 0; num < TPS80031_REGULATOR_MAX; ++num) {
763 ri = &pmic[num];
764 regulator_unregister(ri->rdev);
765 }
766 return 0;
767}
768
769static struct platform_driver tps80031_regulator_driver = {
770 .driver = {
771 .name = "tps80031-pmic",
772 .owner = THIS_MODULE,
773 },
774 .probe = tps80031_regulator_probe,
775 .remove = __devexit_p(tps80031_regulator_remove),
776};
777
778static int __init tps80031_regulator_init(void)
779{
780 return platform_driver_register(&tps80031_regulator_driver);
781}
782subsys_initcall(tps80031_regulator_init);
783
784static void __exit tps80031_regulator_exit(void)
785{
786 platform_driver_unregister(&tps80031_regulator_driver);
787}
788module_exit(tps80031_regulator_exit);
789
790MODULE_ALIAS("platform:tps80031-regulator");
791MODULE_DESCRIPTION("Regulator Driver for TI TPS80031 PMIC");
792MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
793MODULE_LICENSE("GPL v2");
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-04 21:09:29 -0500