regulator: palmas: Convert palmas_ops_smps to regulator_[get|set]_voltage_sel_regmap
[linux-3.10.git] / drivers / regulator / pcap-regulator.c
1 /*
2  * PCAP2 Regulator Driver
3  *
4  * Copyright (c) 2009 Daniel Ribeiro <drwyrm@gmail.com>
5  *
6  * This program is free software; you can redistribute  it and/or modify it
7  * under  the terms of  the GNU General  Public License as published by the
8  * Free Software Foundation;  either version 2 of the  License, or (at your
9  * option) any later version.
10  */
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/err.h>
16 #include <linux/platform_device.h>
17 #include <linux/regulator/driver.h>
18 #include <linux/regulator/machine.h>
19 #include <linux/mfd/ezx-pcap.h>
20
21 static const unsigned int V1_table[] = {
22         2775000, 1275000, 1600000, 1725000, 1825000, 1925000, 2075000, 2275000,
23 };
24
25 static const unsigned int V2_table[] = {
26         2500000, 2775000,
27 };
28
29 static const unsigned int V3_table[] = {
30         1075000, 1275000, 1550000, 1725000, 1876000, 1950000, 2075000, 2275000,
31 };
32
33 static const unsigned int V4_table[] = {
34         1275000, 1550000, 1725000, 1875000, 1950000, 2075000, 2275000, 2775000,
35 };
36
37 static const unsigned int V5_table[] = {
38         1875000, 2275000, 2475000, 2775000,
39 };
40
41 static const unsigned int V6_table[] = {
42         2475000, 2775000,
43 };
44
45 static const unsigned int V7_table[] = {
46         1875000, 2775000,
47 };
48
49 #define V8_table V4_table
50
51 static const unsigned int V9_table[] = {
52         1575000, 1875000, 2475000, 2775000,
53 };
54
55 static const unsigned int V10_table[] = {
56         5000000,
57 };
58
59 static const unsigned int VAUX1_table[] = {
60         1875000, 2475000, 2775000, 3000000,
61 };
62
63 #define VAUX2_table VAUX1_table
64
65 static const unsigned int VAUX3_table[] = {
66         1200000, 1200000, 1200000, 1200000, 1400000, 1600000, 1800000, 2000000,
67         2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000, 3600000,
68 };
69
70 static const unsigned int VAUX4_table[] = {
71         1800000, 1800000, 3000000, 5000000,
72 };
73
74 static const unsigned int VSIM_table[] = {
75         1875000, 3000000,
76 };
77
78 static const unsigned int VSIM2_table[] = {
79         1875000,
80 };
81
82 static const unsigned int VVIB_table[] = {
83         1300000, 1800000, 2000000, 3000000,
84 };
85
86 static const unsigned int SW1_table[] = {
87          900000,  950000, 1000000, 1050000, 1100000, 1150000, 1200000, 1250000,
88         1300000, 1350000, 1400000, 1450000, 1500000, 1600000, 1875000, 2250000,
89 };
90
91 #define SW2_table SW1_table
92
93 static const unsigned int SW3_table[] = {
94         4000000, 4500000, 5000000, 5500000,
95 };
96
97 struct pcap_regulator {
98         const u8 reg;
99         const u8 en;
100         const u8 index;
101         const u8 stby;
102         const u8 lowpwr;
103 };
104
105 #define NA 0xff
106
107 #define VREG_INFO(_vreg, _reg, _en, _index, _stby, _lowpwr)             \
108         [_vreg] = {                                                     \
109                 .reg            = _reg,                                 \
110                 .en             = _en,                                  \
111                 .index          = _index,                               \
112                 .stby           = _stby,                                \
113                 .lowpwr         = _lowpwr,                              \
114         }
115
116 static struct pcap_regulator vreg_table[] = {
117         VREG_INFO(V1,    PCAP_REG_VREG1,   1,  2,  18, 0),
118         VREG_INFO(V2,    PCAP_REG_VREG1,   5,  6,  19, 22),
119         VREG_INFO(V3,    PCAP_REG_VREG1,   7,  8,  20, 23),
120         VREG_INFO(V4,    PCAP_REG_VREG1,   11, 12, 21, 24),
121         /* V5 STBY and LOWPWR are on PCAP_REG_VREG2 */
122         VREG_INFO(V5,    PCAP_REG_VREG1,   15, 16, 12, 19),
123
124         VREG_INFO(V6,    PCAP_REG_VREG2,   1,  2,  14, 20),
125         VREG_INFO(V7,    PCAP_REG_VREG2,   3,  4,  15, 21),
126         VREG_INFO(V8,    PCAP_REG_VREG2,   5,  6,  16, 22),
127         VREG_INFO(V9,    PCAP_REG_VREG2,   9,  10, 17, 23),
128         VREG_INFO(V10,   PCAP_REG_VREG2,   10, NA, 18, 24),
129
130         VREG_INFO(VAUX1, PCAP_REG_AUXVREG, 1,  2,  22, 23),
131         /* VAUX2 ... VSIM2 STBY and LOWPWR are on PCAP_REG_LOWPWR */
132         VREG_INFO(VAUX2, PCAP_REG_AUXVREG, 4,  5,  0,  1),
133         VREG_INFO(VAUX3, PCAP_REG_AUXVREG, 7,  8,  2,  3),
134         VREG_INFO(VAUX4, PCAP_REG_AUXVREG, 12, 13, 4,  5),
135         VREG_INFO(VSIM,  PCAP_REG_AUXVREG, 17, 18, NA, 6),
136         VREG_INFO(VSIM2, PCAP_REG_AUXVREG, 16, NA, NA, 7),
137         VREG_INFO(VVIB,  PCAP_REG_AUXVREG, 19, 20, NA, NA),
138
139         VREG_INFO(SW1,   PCAP_REG_SWCTRL,  1,  2,  NA, NA),
140         VREG_INFO(SW2,   PCAP_REG_SWCTRL,  6,  7,  NA, NA),
141         /* SW3 STBY is on PCAP_REG_AUXVREG */
142         VREG_INFO(SW3,   PCAP_REG_SWCTRL,  11, 12, 24, NA),
143
144         /* SWxS used to control SWx voltage on standby */
145 /*      VREG_INFO(SW1S,  PCAP_REG_LOWPWR,  NA, 12, NA, NA),
146         VREG_INFO(SW2S,  PCAP_REG_LOWPWR,  NA, 20, NA, NA), */
147 };
148
149 static int pcap_regulator_set_voltage_sel(struct regulator_dev *rdev,
150                                           unsigned selector)
151 {
152         struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
153         void *pcap = rdev_get_drvdata(rdev);
154
155         /* the regulator doesn't support voltage switching */
156         if (rdev->desc->n_voltages == 1)
157                 return -EINVAL;
158
159         return ezx_pcap_set_bits(pcap, vreg->reg,
160                                  (rdev->desc->n_voltages - 1) << vreg->index,
161                                  selector << vreg->index);
162 }
163
164 static int pcap_regulator_get_voltage_sel(struct regulator_dev *rdev)
165 {
166         struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
167         void *pcap = rdev_get_drvdata(rdev);
168         u32 tmp;
169
170         if (rdev->desc->n_voltages == 1)
171                 return 0;
172
173         ezx_pcap_read(pcap, vreg->reg, &tmp);
174         tmp = ((tmp >> vreg->index) & (rdev->desc->n_voltages - 1));
175         return tmp;
176 }
177
178 static int pcap_regulator_enable(struct regulator_dev *rdev)
179 {
180         struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
181         void *pcap = rdev_get_drvdata(rdev);
182
183         if (vreg->en == NA)
184                 return -EINVAL;
185
186         return ezx_pcap_set_bits(pcap, vreg->reg, 1 << vreg->en, 1 << vreg->en);
187 }
188
189 static int pcap_regulator_disable(struct regulator_dev *rdev)
190 {
191         struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
192         void *pcap = rdev_get_drvdata(rdev);
193
194         if (vreg->en == NA)
195                 return -EINVAL;
196
197         return ezx_pcap_set_bits(pcap, vreg->reg, 1 << vreg->en, 0);
198 }
199
200 static int pcap_regulator_is_enabled(struct regulator_dev *rdev)
201 {
202         struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
203         void *pcap = rdev_get_drvdata(rdev);
204         u32 tmp;
205
206         if (vreg->en == NA)
207                 return -EINVAL;
208
209         ezx_pcap_read(pcap, vreg->reg, &tmp);
210         return (tmp >> vreg->en) & 1;
211 }
212
213 static struct regulator_ops pcap_regulator_ops = {
214         .list_voltage   = regulator_list_voltage_table,
215         .set_voltage_sel = pcap_regulator_set_voltage_sel,
216         .get_voltage_sel = pcap_regulator_get_voltage_sel,
217         .enable         = pcap_regulator_enable,
218         .disable        = pcap_regulator_disable,
219         .is_enabled     = pcap_regulator_is_enabled,
220 };
221
222 #define VREG(_vreg)                                             \
223         [_vreg] = {                                             \
224                 .name           = #_vreg,                       \
225                 .id             = _vreg,                        \
226                 .n_voltages     = ARRAY_SIZE(_vreg##_table),    \
227                 .volt_table     = _vreg##_table,                \
228                 .ops            = &pcap_regulator_ops,          \
229                 .type           = REGULATOR_VOLTAGE,            \
230                 .owner          = THIS_MODULE,                  \
231         }
232
233 static const struct regulator_desc pcap_regulators[] = {
234         VREG(V1), VREG(V2), VREG(V3), VREG(V4), VREG(V5), VREG(V6), VREG(V7),
235         VREG(V8), VREG(V9), VREG(V10), VREG(VAUX1), VREG(VAUX2), VREG(VAUX3),
236         VREG(VAUX4), VREG(VSIM), VREG(VSIM2), VREG(VVIB), VREG(SW1), VREG(SW2),
237 };
238
239 static int __devinit pcap_regulator_probe(struct platform_device *pdev)
240 {
241         struct regulator_dev *rdev;
242         void *pcap = dev_get_drvdata(pdev->dev.parent);
243         struct regulator_config config = { };
244
245         config.dev = &pdev->dev;
246         config.init_data = pdev->dev.platform_data;
247         config.driver_data = pcap;
248
249         rdev = regulator_register(&pcap_regulators[pdev->id], &config);
250         if (IS_ERR(rdev))
251                 return PTR_ERR(rdev);
252
253         platform_set_drvdata(pdev, rdev);
254
255         return 0;
256 }
257
258 static int __devexit pcap_regulator_remove(struct platform_device *pdev)
259 {
260         struct regulator_dev *rdev = platform_get_drvdata(pdev);
261
262         regulator_unregister(rdev);
263         platform_set_drvdata(pdev, NULL);
264
265         return 0;
266 }
267
268 static struct platform_driver pcap_regulator_driver = {
269         .driver = {
270                 .name   = "pcap-regulator",
271                 .owner  = THIS_MODULE,
272         },
273         .probe  = pcap_regulator_probe,
274         .remove = __devexit_p(pcap_regulator_remove),
275 };
276
277 static int __init pcap_regulator_init(void)
278 {
279         return platform_driver_register(&pcap_regulator_driver);
280 }
281
282 static void __exit pcap_regulator_exit(void)
283 {
284         platform_driver_unregister(&pcap_regulator_driver);
285 }
286
287 subsys_initcall(pcap_regulator_init);
288 module_exit(pcap_regulator_exit);
289
290 MODULE_AUTHOR("Daniel Ribeiro <drwyrm@gmail.com>");
291 MODULE_DESCRIPTION("PCAP2 Regulator Driver");
292 MODULE_LICENSE("GPL");