Root/drivers/regulator/88pm8607.c

1/*
2 * Regulators driver for Marvell 88PM8607
3 *
4 * Copyright (C) 2009 Marvell International Ltd.
5 * Haojian Zhuang <haojian.zhuang@marvell.com>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11#include <linux/kernel.h>
12#include <linux/init.h>
13#include <linux/err.h>
14#include <linux/i2c.h>
15#include <linux/platform_device.h>
16#include <linux/regulator/driver.h>
17#include <linux/regulator/machine.h>
18#include <linux/mfd/88pm860x.h>
19#include <linux/module.h>
20
21struct pm8607_regulator_info {
22    struct regulator_desc desc;
23    struct pm860x_chip *chip;
24    struct regulator_dev *regulator;
25    struct i2c_client *i2c;
26
27    unsigned int *vol_table;
28    unsigned int *vol_suspend;
29
30    int update_reg;
31    int update_bit;
32    int slope_double;
33};
34
35static const unsigned int BUCK1_table[] = {
36     725000, 750000, 775000, 800000, 825000, 850000, 875000, 900000,
37     925000, 950000, 975000, 1000000, 1025000, 1050000, 1075000, 1100000,
38    1125000, 1150000, 1175000, 1200000, 1225000, 1250000, 1275000, 1300000,
39    1325000, 1350000, 1375000, 1400000, 1425000, 1450000, 1475000, 1500000,
40          0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
41     200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
42     400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
43     600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
44};
45
46static const unsigned int BUCK1_suspend_table[] = {
47          0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
48     200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
49     400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
50     600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
51     800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
52    1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
53    1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
54    1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
55};
56
57static const unsigned int BUCK2_table[] = {
58          0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
59     400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
60     800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
61    1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
62    1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
63    2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
64    2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
65    2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
66};
67
68static const unsigned int BUCK2_suspend_table[] = {
69          0, 50000, 100000, 150000, 200000, 250000, 300000, 350000,
70     400000, 450000, 500000, 550000, 600000, 650000, 700000, 750000,
71     800000, 850000, 900000, 950000, 1000000, 1050000, 1100000, 1150000,
72    1200000, 1250000, 1300000, 1350000, 1400000, 1450000, 1500000, 1550000,
73    1600000, 1650000, 1700000, 1750000, 1800000, 1850000, 1900000, 1950000,
74    2000000, 2050000, 2100000, 2150000, 2200000, 2250000, 2300000, 2350000,
75    2400000, 2450000, 2500000, 2550000, 2600000, 2650000, 2700000, 2750000,
76    2800000, 2850000, 2900000, 2950000, 3000000, 3000000, 3000000, 3000000,
77};
78
79static const unsigned int BUCK3_table[] = {
80              0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
81     200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
82     400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
83     600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
84     800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
85    1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
86    1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
87    1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
88};
89
90static const unsigned int BUCK3_suspend_table[] = {
91              0, 25000, 50000, 75000, 100000, 125000, 150000, 175000,
92     200000, 225000, 250000, 275000, 300000, 325000, 350000, 375000,
93     400000, 425000, 450000, 475000, 500000, 525000, 550000, 575000,
94     600000, 625000, 650000, 675000, 700000, 725000, 750000, 775000,
95     800000, 825000, 850000, 875000, 900000, 925000, 950000, 975000,
96    1000000, 1025000, 1050000, 1075000, 1100000, 1125000, 1150000, 1175000,
97    1200000, 1225000, 1250000, 1275000, 1300000, 1325000, 1350000, 1375000,
98    1400000, 1425000, 1450000, 1475000, 1500000, 1500000, 1500000, 1500000,
99};
100
101static const unsigned int LDO1_table[] = {
102    1800000, 1200000, 2800000, 0,
103};
104
105static const unsigned int LDO1_suspend_table[] = {
106    1800000, 1200000, 0, 0,
107};
108
109static const unsigned int LDO2_table[] = {
110    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
111};
112
113static const unsigned int LDO2_suspend_table[] = {
114    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
115};
116
117static const unsigned int LDO3_table[] = {
118    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
119};
120
121static const unsigned int LDO3_suspend_table[] = {
122    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
123};
124
125static const unsigned int LDO4_table[] = {
126    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 3300000,
127};
128
129static const unsigned int LDO4_suspend_table[] = {
130    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2900000, 2900000,
131};
132
133static const unsigned int LDO5_table[] = {
134    2900000, 3000000, 3100000, 3300000,
135};
136
137static const unsigned int LDO5_suspend_table[] = {
138    2900000, 0, 0, 0,
139};
140
141static const unsigned int LDO6_table[] = {
142    1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 3300000,
143};
144
145static const unsigned int LDO6_suspend_table[] = {
146    1800000, 1850000, 2600000, 2650000, 2700000, 2750000, 2800000, 2900000,
147};
148
149static const unsigned int LDO7_table[] = {
150    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
151};
152
153static const unsigned int LDO7_suspend_table[] = {
154    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
155};
156
157static const unsigned int LDO8_table[] = {
158    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
159};
160
161static const unsigned int LDO8_suspend_table[] = {
162    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
163};
164
165static const unsigned int LDO9_table[] = {
166    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
167};
168
169static const unsigned int LDO9_suspend_table[] = {
170    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
171};
172
173static const unsigned int LDO10_table[] = {
174    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 3300000,
175    1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
176};
177
178static const unsigned int LDO10_suspend_table[] = {
179    1800000, 1850000, 1900000, 2700000, 2750000, 2800000, 2850000, 2900000,
180    1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
181};
182
183static const unsigned int LDO12_table[] = {
184    1800000, 1900000, 2700000, 2800000, 2900000, 3000000, 3100000, 3300000,
185    1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
186};
187
188static const unsigned int LDO12_suspend_table[] = {
189    1800000, 1900000, 2700000, 2800000, 2900000, 2900000, 2900000, 2900000,
190    1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000, 1200000,
191};
192
193static const unsigned int LDO13_table[] = {
194    1200000, 1300000, 1800000, 2000000, 2500000, 2800000, 3000000, 0,
195};
196
197static const unsigned int LDO13_suspend_table[] = {
198    0,
199};
200
201static const unsigned int LDO14_table[] = {
202    1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 3300000,
203};
204
205static const unsigned int LDO14_suspend_table[] = {
206    1800000, 1850000, 2700000, 2750000, 2800000, 2850000, 2900000, 2900000,
207};
208
209static int pm8607_list_voltage(struct regulator_dev *rdev, unsigned index)
210{
211    struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
212    int ret = -EINVAL;
213
214    if (info->vol_table && (index < rdev->desc->n_voltages)) {
215        ret = info->vol_table[index];
216        if (info->slope_double)
217            ret <<= 1;
218    }
219    return ret;
220}
221
222static int pm8607_set_voltage_sel(struct regulator_dev *rdev, unsigned selector)
223{
224    struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
225    uint8_t val;
226    int ret;
227
228    val = (uint8_t)(selector << (ffs(rdev->desc->vsel_mask) - 1));
229
230    ret = pm860x_set_bits(info->i2c, rdev->desc->vsel_reg,
231                  rdev->desc->vsel_mask, val);
232    if (ret)
233        return ret;
234    switch (info->desc.id) {
235    case PM8607_ID_BUCK1:
236    case PM8607_ID_BUCK3:
237        ret = pm860x_set_bits(info->i2c, info->update_reg,
238                      1 << info->update_bit,
239                      1 << info->update_bit);
240        break;
241    }
242    return ret;
243}
244
245static struct regulator_ops pm8607_regulator_ops = {
246    .list_voltage = pm8607_list_voltage,
247    .set_voltage_sel = pm8607_set_voltage_sel,
248    .get_voltage_sel = regulator_get_voltage_sel_regmap,
249    .enable = regulator_enable_regmap,
250    .disable = regulator_disable_regmap,
251    .is_enabled = regulator_is_enabled_regmap,
252};
253
254#define PM8607_DVC(vreg, ureg, ubit, ereg, ebit) \
255{ \
256    .desc = { \
257        .name = #vreg, \
258        .ops = &pm8607_regulator_ops, \
259        .type = REGULATOR_VOLTAGE, \
260        .id = PM8607_ID_##vreg, \
261        .owner = THIS_MODULE, \
262        .n_voltages = ARRAY_SIZE(vreg##_table), \
263        .vsel_reg = PM8607_##vreg, \
264        .vsel_mask = ARRAY_SIZE(vreg##_table) - 1, \
265        .enable_reg = PM8607_##ereg, \
266        .enable_mask = 1 << (ebit), \
267    }, \
268    .update_reg = PM8607_##ureg, \
269    .update_bit = (ubit), \
270    .slope_double = (0), \
271    .vol_table = (unsigned int *)&vreg##_table, \
272    .vol_suspend = (unsigned int *)&vreg##_suspend_table, \
273}
274
275#define PM8607_LDO(_id, vreg, shift, ereg, ebit) \
276{ \
277    .desc = { \
278        .name = "LDO" #_id, \
279        .ops = &pm8607_regulator_ops, \
280        .type = REGULATOR_VOLTAGE, \
281        .id = PM8607_ID_LDO##_id, \
282        .owner = THIS_MODULE, \
283        .n_voltages = ARRAY_SIZE(LDO##_id##_table), \
284        .vsel_reg = PM8607_##vreg, \
285        .vsel_mask = (ARRAY_SIZE(LDO##_id##_table) - 1) << (shift), \
286        .enable_reg = PM8607_##ereg, \
287        .enable_mask = 1 << (ebit), \
288    }, \
289    .slope_double = (0), \
290    .vol_table = (unsigned int *)&LDO##_id##_table, \
291    .vol_suspend = (unsigned int *)&LDO##_id##_suspend_table, \
292}
293
294static struct pm8607_regulator_info pm8607_regulator_info[] = {
295    PM8607_DVC(BUCK1, GO, 0, SUPPLIES_EN11, 0),
296    PM8607_DVC(BUCK2, GO, 1, SUPPLIES_EN11, 1),
297    PM8607_DVC(BUCK3, GO, 2, SUPPLIES_EN11, 2),
298
299    PM8607_LDO(1, LDO1, 0, SUPPLIES_EN11, 3),
300    PM8607_LDO(2, LDO2, 0, SUPPLIES_EN11, 4),
301    PM8607_LDO(3, LDO3, 0, SUPPLIES_EN11, 5),
302    PM8607_LDO(4, LDO4, 0, SUPPLIES_EN11, 6),
303    PM8607_LDO(5, LDO5, 0, SUPPLIES_EN11, 7),
304    PM8607_LDO(6, LDO6, 0, SUPPLIES_EN12, 0),
305    PM8607_LDO(7, LDO7, 0, SUPPLIES_EN12, 1),
306    PM8607_LDO(8, LDO8, 0, SUPPLIES_EN12, 2),
307    PM8607_LDO(9, LDO9, 0, SUPPLIES_EN12, 3),
308    PM8607_LDO(10, LDO10, 0, SUPPLIES_EN12, 4),
309    PM8607_LDO(12, LDO12, 0, SUPPLIES_EN12, 5),
310    PM8607_LDO(13, VIBRATOR_SET, 1, VIBRATOR_SET, 0),
311    PM8607_LDO(14, LDO14, 0, SUPPLIES_EN12, 6),
312};
313
314static int __devinit pm8607_regulator_probe(struct platform_device *pdev)
315{
316    struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
317    struct pm8607_regulator_info *info = NULL;
318    struct regulator_init_data *pdata = pdev->dev.platform_data;
319    struct regulator_config config = { };
320    struct resource *res;
321    int i;
322
323    res = platform_get_resource(pdev, IORESOURCE_IO, 0);
324    if (res == NULL) {
325        dev_err(&pdev->dev, "No I/O resource!\n");
326        return -EINVAL;
327    }
328    for (i = 0; i < ARRAY_SIZE(pm8607_regulator_info); i++) {
329        info = &pm8607_regulator_info[i];
330        if (info->desc.id == res->start)
331            break;
332    }
333    if (i == ARRAY_SIZE(pm8607_regulator_info)) {
334        dev_err(&pdev->dev, "Failed to find regulator %llu\n",
335            (unsigned long long)res->start);
336        return -EINVAL;
337    }
338    info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
339    info->chip = chip;
340
341    /* check DVC ramp slope double */
342    if ((i == PM8607_ID_BUCK3) && info->chip->buck3_double)
343        info->slope_double = 1;
344
345    config.dev = &pdev->dev;
346    config.init_data = pdata;
347    config.driver_data = info;
348
349    if (chip->id == CHIP_PM8607)
350        config.regmap = chip->regmap;
351    else
352        config.regmap = chip->regmap_companion;
353
354    /* replace driver_data with info */
355    info->regulator = regulator_register(&info->desc, &config);
356    if (IS_ERR(info->regulator)) {
357        dev_err(&pdev->dev, "failed to register regulator %s\n",
358            info->desc.name);
359        return PTR_ERR(info->regulator);
360    }
361
362    platform_set_drvdata(pdev, info);
363    return 0;
364}
365
366static int __devexit pm8607_regulator_remove(struct platform_device *pdev)
367{
368    struct pm8607_regulator_info *info = platform_get_drvdata(pdev);
369
370    platform_set_drvdata(pdev, NULL);
371    regulator_unregister(info->regulator);
372    return 0;
373}
374
375static struct platform_driver pm8607_regulator_driver = {
376    .driver = {
377        .name = "88pm860x-regulator",
378        .owner = THIS_MODULE,
379    },
380    .probe = pm8607_regulator_probe,
381    .remove = __devexit_p(pm8607_regulator_remove),
382};
383
384static int __init pm8607_regulator_init(void)
385{
386    return platform_driver_register(&pm8607_regulator_driver);
387}
388subsys_initcall(pm8607_regulator_init);
389
390static void __exit pm8607_regulator_exit(void)
391{
392    platform_driver_unregister(&pm8607_regulator_driver);
393}
394module_exit(pm8607_regulator_exit);
395
396MODULE_LICENSE("GPL");
397MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
398MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM8607 PMIC");
399MODULE_ALIAS("platform:88pm8607-regulator");
400

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