blob: 6fa0c7d13290981d254b38538d6bb62103df1e27 [file] [log] [blame]
Bjorn Anderssonda65e362015-08-17 11:43:59 -07001/*
2 * Copyright (c) 2015, Sony Mobile Communications AB.
3 * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 and
7 * only version 2 as published by the Free Software Foundation.
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
15#include <linux/module.h>
16#include <linux/of.h>
17#include <linux/of_device.h>
18#include <linux/platform_device.h>
19#include <linux/regulator/driver.h>
20#include <linux/regulator/machine.h>
21#include <linux/regulator/of_regulator.h>
22#include <linux/soc/qcom/smd-rpm.h>
23
24struct qcom_rpm_reg {
25 struct device *dev;
26
27 struct qcom_smd_rpm *rpm;
28
29 u32 type;
30 u32 id;
31
32 struct regulator_desc desc;
33
34 int is_enabled;
35 int uV;
36};
37
38struct rpm_regulator_req {
Stephen Boyd2c652a92015-09-02 15:46:51 -070039 __le32 key;
40 __le32 nbytes;
41 __le32 value;
Bjorn Anderssonda65e362015-08-17 11:43:59 -070042};
43
44#define RPM_KEY_SWEN 0x6e657773 /* "swen" */
45#define RPM_KEY_UV 0x00007675 /* "uv" */
46#define RPM_KEY_MA 0x0000616d /* "ma" */
47
48static int rpm_reg_write_active(struct qcom_rpm_reg *vreg,
49 struct rpm_regulator_req *req,
50 size_t size)
51{
52 return qcom_rpm_smd_write(vreg->rpm,
53 QCOM_SMD_RPM_ACTIVE_STATE,
54 vreg->type,
55 vreg->id,
56 req, size);
57}
58
59static int rpm_reg_enable(struct regulator_dev *rdev)
60{
61 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
62 struct rpm_regulator_req req;
63 int ret;
64
Stephen Boyd2c652a92015-09-02 15:46:51 -070065 req.key = cpu_to_le32(RPM_KEY_SWEN);
66 req.nbytes = cpu_to_le32(sizeof(u32));
67 req.value = cpu_to_le32(1);
Bjorn Anderssonda65e362015-08-17 11:43:59 -070068
69 ret = rpm_reg_write_active(vreg, &req, sizeof(req));
70 if (!ret)
71 vreg->is_enabled = 1;
72
73 return ret;
74}
75
76static int rpm_reg_is_enabled(struct regulator_dev *rdev)
77{
78 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
79
80 return vreg->is_enabled;
81}
82
83static int rpm_reg_disable(struct regulator_dev *rdev)
84{
85 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
86 struct rpm_regulator_req req;
87 int ret;
88
Stephen Boyd2c652a92015-09-02 15:46:51 -070089 req.key = cpu_to_le32(RPM_KEY_SWEN);
90 req.nbytes = cpu_to_le32(sizeof(u32));
Bjorn Anderssonda65e362015-08-17 11:43:59 -070091 req.value = 0;
92
93 ret = rpm_reg_write_active(vreg, &req, sizeof(req));
94 if (!ret)
95 vreg->is_enabled = 0;
96
97 return ret;
98}
99
100static int rpm_reg_get_voltage(struct regulator_dev *rdev)
101{
102 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
103
104 return vreg->uV;
105}
106
107static int rpm_reg_set_voltage(struct regulator_dev *rdev,
108 int min_uV,
109 int max_uV,
110 unsigned *selector)
111{
112 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
113 struct rpm_regulator_req req;
114 int ret = 0;
115
Stephen Boyd2c652a92015-09-02 15:46:51 -0700116 req.key = cpu_to_le32(RPM_KEY_UV);
117 req.nbytes = cpu_to_le32(sizeof(u32));
118 req.value = cpu_to_le32(min_uV);
Bjorn Anderssonda65e362015-08-17 11:43:59 -0700119
120 ret = rpm_reg_write_active(vreg, &req, sizeof(req));
121 if (!ret)
122 vreg->uV = min_uV;
123
124 return ret;
125}
126
127static int rpm_reg_set_load(struct regulator_dev *rdev, int load_uA)
128{
129 struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
130 struct rpm_regulator_req req;
131
Stephen Boyd2c652a92015-09-02 15:46:51 -0700132 req.key = cpu_to_le32(RPM_KEY_MA);
133 req.nbytes = cpu_to_le32(sizeof(u32));
Bjorn Anderssona3e123c2015-10-12 17:49:52 -0700134 req.value = cpu_to_le32(load_uA / 1000);
Bjorn Anderssonda65e362015-08-17 11:43:59 -0700135
136 return rpm_reg_write_active(vreg, &req, sizeof(req));
137}
138
139static const struct regulator_ops rpm_smps_ldo_ops = {
140 .enable = rpm_reg_enable,
141 .disable = rpm_reg_disable,
142 .is_enabled = rpm_reg_is_enabled,
143
144 .get_voltage = rpm_reg_get_voltage,
145 .set_voltage = rpm_reg_set_voltage,
146
147 .set_load = rpm_reg_set_load,
148};
149
150static const struct regulator_ops rpm_switch_ops = {
151 .enable = rpm_reg_enable,
152 .disable = rpm_reg_disable,
153 .is_enabled = rpm_reg_is_enabled,
154};
155
156static const struct regulator_desc pm8x41_hfsmps = {
157 .linear_ranges = (struct regulator_linear_range[]) {
158 REGULATOR_LINEAR_RANGE( 375000, 0, 95, 12500),
159 REGULATOR_LINEAR_RANGE(1550000, 96, 158, 25000),
160 },
161 .n_linear_ranges = 2,
162 .n_voltages = 159,
163 .ops = &rpm_smps_ldo_ops,
164};
165
166static const struct regulator_desc pm8841_ftsmps = {
167 .linear_ranges = (struct regulator_linear_range[]) {
168 REGULATOR_LINEAR_RANGE(350000, 0, 184, 5000),
169 REGULATOR_LINEAR_RANGE(700000, 185, 339, 10000),
170 },
171 .n_linear_ranges = 2,
172 .n_voltages = 340,
173 .ops = &rpm_smps_ldo_ops,
174};
175
176static const struct regulator_desc pm8941_boost = {
177 .linear_ranges = (struct regulator_linear_range[]) {
178 REGULATOR_LINEAR_RANGE(4000000, 0, 15, 100000),
179 },
180 .n_linear_ranges = 1,
181 .n_voltages = 16,
182 .ops = &rpm_smps_ldo_ops,
183};
184
185static const struct regulator_desc pm8941_pldo = {
186 .linear_ranges = (struct regulator_linear_range[]) {
187 REGULATOR_LINEAR_RANGE( 750000, 0, 30, 25000),
188 REGULATOR_LINEAR_RANGE(1500000, 31, 99, 50000),
189 },
190 .n_linear_ranges = 2,
191 .n_voltages = 100,
192 .ops = &rpm_smps_ldo_ops,
193};
194
195static const struct regulator_desc pm8941_nldo = {
196 .linear_ranges = (struct regulator_linear_range[]) {
197 REGULATOR_LINEAR_RANGE(750000, 0, 63, 12500),
198 },
199 .n_linear_ranges = 1,
200 .n_voltages = 64,
201 .ops = &rpm_smps_ldo_ops,
202};
203
204static const struct regulator_desc pm8941_lnldo = {
205 .fixed_uV = 1740000,
Axel Lin5a286aa2015-08-19 11:17:53 +0800206 .n_voltages = 1,
Bjorn Anderssonda65e362015-08-17 11:43:59 -0700207 .ops = &rpm_smps_ldo_ops,
208};
209
210static const struct regulator_desc pm8941_switch = {
211 .ops = &rpm_switch_ops,
212};
213
214struct rpm_regulator_data {
215 const char *name;
216 u32 type;
217 u32 id;
218 const struct regulator_desc *desc;
219 const char *supply;
220};
221
222static const struct rpm_regulator_data rpm_pm8841_regulators[] = {
223 { "s1", QCOM_SMD_RPM_SMPB, 1, &pm8x41_hfsmps, "vdd_s1" },
224 { "s2", QCOM_SMD_RPM_SMPB, 2, &pm8841_ftsmps, "vdd_s2" },
225 { "s3", QCOM_SMD_RPM_SMPB, 3, &pm8x41_hfsmps, "vdd_s3" },
226 { "s4", QCOM_SMD_RPM_SMPB, 4, &pm8841_ftsmps, "vdd_s4" },
227 { "s5", QCOM_SMD_RPM_SMPB, 5, &pm8841_ftsmps, "vdd_s5" },
228 { "s6", QCOM_SMD_RPM_SMPB, 6, &pm8841_ftsmps, "vdd_s6" },
229 { "s7", QCOM_SMD_RPM_SMPB, 7, &pm8841_ftsmps, "vdd_s7" },
230 { "s8", QCOM_SMD_RPM_SMPB, 8, &pm8841_ftsmps, "vdd_s8" },
231 {}
232};
233
234static const struct rpm_regulator_data rpm_pm8941_regulators[] = {
235 { "s1", QCOM_SMD_RPM_SMPA, 1, &pm8x41_hfsmps, "vdd_s1" },
236 { "s2", QCOM_SMD_RPM_SMPA, 2, &pm8x41_hfsmps, "vdd_s2" },
237 { "s3", QCOM_SMD_RPM_SMPA, 3, &pm8x41_hfsmps, "vdd_s3" },
238 { "s4", QCOM_SMD_RPM_BOOST, 1, &pm8941_boost },
239
240 { "l1", QCOM_SMD_RPM_LDOA, 1, &pm8941_nldo, "vdd_l1_l3" },
241 { "l2", QCOM_SMD_RPM_LDOA, 2, &pm8941_nldo, "vdd_l2_lvs1_2_3" },
242 { "l3", QCOM_SMD_RPM_LDOA, 3, &pm8941_nldo, "vdd_l1_l3" },
243 { "l4", QCOM_SMD_RPM_LDOA, 4, &pm8941_nldo, "vdd_l4_l11" },
244 { "l5", QCOM_SMD_RPM_LDOA, 5, &pm8941_lnldo, "vdd_l5_l7" },
245 { "l6", QCOM_SMD_RPM_LDOA, 6, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
246 { "l7", QCOM_SMD_RPM_LDOA, 7, &pm8941_lnldo, "vdd_l5_l7" },
247 { "l8", QCOM_SMD_RPM_LDOA, 8, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
248 { "l9", QCOM_SMD_RPM_LDOA, 9, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
249 { "l10", QCOM_SMD_RPM_LDOA, 10, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
250 { "l11", QCOM_SMD_RPM_LDOA, 11, &pm8941_nldo, "vdd_l4_l11" },
251 { "l12", QCOM_SMD_RPM_LDOA, 12, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
252 { "l13", QCOM_SMD_RPM_LDOA, 13, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
253 { "l14", QCOM_SMD_RPM_LDOA, 14, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
254 { "l15", QCOM_SMD_RPM_LDOA, 15, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
255 { "l16", QCOM_SMD_RPM_LDOA, 16, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
256 { "l17", QCOM_SMD_RPM_LDOA, 17, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
257 { "l18", QCOM_SMD_RPM_LDOA, 18, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
258 { "l19", QCOM_SMD_RPM_LDOA, 19, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
259 { "l20", QCOM_SMD_RPM_LDOA, 20, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
260 { "l21", QCOM_SMD_RPM_LDOA, 21, &pm8941_pldo, "vdd_l21" },
261 { "l22", QCOM_SMD_RPM_LDOA, 22, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
262 { "l23", QCOM_SMD_RPM_LDOA, 23, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
263 { "l24", QCOM_SMD_RPM_LDOA, 24, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
264
265 { "lvs1", QCOM_SMD_RPM_VSA, 1, &pm8941_switch, "vdd_l2_lvs1_2_3" },
266 { "lvs2", QCOM_SMD_RPM_VSA, 2, &pm8941_switch, "vdd_l2_lvs1_2_3" },
267 { "lvs3", QCOM_SMD_RPM_VSA, 3, &pm8941_switch, "vdd_l2_lvs1_2_3" },
268
269 { "5vs1", QCOM_SMD_RPM_VSA, 4, &pm8941_switch, "vin_5vs" },
270 { "5vs2", QCOM_SMD_RPM_VSA, 5, &pm8941_switch, "vin_5vs" },
271
272 {}
273};
274
275static const struct of_device_id rpm_of_match[] = {
276 { .compatible = "qcom,rpm-pm8841-regulators", .data = &rpm_pm8841_regulators },
277 { .compatible = "qcom,rpm-pm8941-regulators", .data = &rpm_pm8941_regulators },
278 {}
279};
280MODULE_DEVICE_TABLE(of, rpm_of_match);
281
282static int rpm_reg_probe(struct platform_device *pdev)
283{
284 const struct rpm_regulator_data *reg;
285 const struct of_device_id *match;
286 struct regulator_config config = { };
287 struct regulator_dev *rdev;
288 struct qcom_rpm_reg *vreg;
289 struct qcom_smd_rpm *rpm;
290
291 rpm = dev_get_drvdata(pdev->dev.parent);
292 if (!rpm) {
293 dev_err(&pdev->dev, "unable to retrieve handle to rpm\n");
294 return -ENODEV;
295 }
296
297 match = of_match_device(rpm_of_match, &pdev->dev);
298 for (reg = match->data; reg->name; reg++) {
299 vreg = devm_kzalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
300 if (!vreg)
301 return -ENOMEM;
302
303 vreg->dev = &pdev->dev;
304 vreg->type = reg->type;
305 vreg->id = reg->id;
306 vreg->rpm = rpm;
307
308 memcpy(&vreg->desc, reg->desc, sizeof(vreg->desc));
309
310 vreg->desc.id = -1;
311 vreg->desc.owner = THIS_MODULE;
312 vreg->desc.type = REGULATOR_VOLTAGE;
313 vreg->desc.name = reg->name;
314 vreg->desc.supply_name = reg->supply;
315 vreg->desc.of_match = reg->name;
316
317 config.dev = &pdev->dev;
318 config.driver_data = vreg;
319 rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config);
320 if (IS_ERR(rdev)) {
321 dev_err(&pdev->dev, "failed to register %s\n", reg->name);
322 return PTR_ERR(rdev);
323 }
324 }
325
326 return 0;
327}
328
329static struct platform_driver rpm_reg_driver = {
330 .probe = rpm_reg_probe,
331 .driver = {
332 .name = "qcom_rpm_smd_regulator",
333 .of_match_table = rpm_of_match,
334 },
335};
336
337static int __init rpm_reg_init(void)
338{
339 return platform_driver_register(&rpm_reg_driver);
340}
341subsys_initcall(rpm_reg_init);
342
343static void __exit rpm_reg_exit(void)
344{
345 platform_driver_unregister(&rpm_reg_driver);
346}
347module_exit(rpm_reg_exit)
348
349MODULE_DESCRIPTION("Qualcomm RPM regulator driver");
350MODULE_LICENSE("GPL v2");