4 * Regulator driver for TPS65218 PMIC
6 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
13 * kind, whether expressed or implied; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License version 2 for more details.
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/device.h>
21 #include <linux/init.h>
22 #include <linux/err.h>
23 #include <linux/platform_device.h>
24 #include <linux/of_device.h>
25 #include <linux/regulator/of_regulator.h>
26 #include <linux/regulator/driver.h>
27 #include <linux/regulator/machine.h>
28 #include <linux/mfd/tps65218.h>
30 static unsigned int tps65218_ramp_delay
= 4000;
32 enum tps65218_regulators
{ DCDC1
, DCDC2
, DCDC3
, DCDC4
, DCDC5
, DCDC6
, LDO1
};
34 #define TPS65218_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _er, _em, _t, \
41 .type = REGULATOR_VOLTAGE, \
42 .owner = THIS_MODULE, \
48 .linear_ranges = _lr, \
49 .n_linear_ranges = _nlr, \
52 #define TPS65218_INFO(_id, _nm, _min, _max) \
60 static const struct regulator_linear_range dcdc1_dcdc2_ranges
[] = {
61 REGULATOR_LINEAR_RANGE(850000, 0x0, 0x32, 10000),
62 REGULATOR_LINEAR_RANGE(1375000, 0x33, 0x3f, 25000),
65 static const struct regulator_linear_range ldo1_dcdc3_ranges
[] = {
66 REGULATOR_LINEAR_RANGE(900000, 0x0, 0x1a, 25000),
67 REGULATOR_LINEAR_RANGE(1600000, 0x1b, 0x3f, 50000),
70 static const struct regulator_linear_range dcdc4_ranges
[] = {
71 REGULATOR_LINEAR_RANGE(1175000, 0x0, 0xf, 25000),
72 REGULATOR_LINEAR_RANGE(1550000, 0x10, 0x34, 50000),
75 static struct tps_info tps65218_pmic_regs
[] = {
76 TPS65218_INFO(0, "DCDC1", 850000, 167500),
77 TPS65218_INFO(1, "DCDC2", 850000, 1675000),
78 TPS65218_INFO(2, "DCDC3", 900000, 3400000),
79 TPS65218_INFO(3, "DCDC4", 1175000, 3400000),
80 TPS65218_INFO(4, "DCDC5", 1000000, 1000000),
81 TPS65218_INFO(5, "DCDC6", 1800000, 1800000),
82 TPS65218_INFO(6, "LDO1", 900000, 3400000),
85 #define TPS65218_OF_MATCH(comp, label) \
91 static const struct of_device_id tps65218_of_match
[] = {
92 TPS65218_OF_MATCH("ti,tps65218-dcdc1", tps65218_pmic_regs
[DCDC1
]),
93 TPS65218_OF_MATCH("ti,tps65218-dcdc2", tps65218_pmic_regs
[DCDC2
]),
94 TPS65218_OF_MATCH("ti,tps65218-dcdc3", tps65218_pmic_regs
[DCDC3
]),
95 TPS65218_OF_MATCH("ti,tps65218-dcdc4", tps65218_pmic_regs
[DCDC4
]),
96 TPS65218_OF_MATCH("ti,tps65218-dcdc5", tps65218_pmic_regs
[DCDC5
]),
97 TPS65218_OF_MATCH("ti,tps65218-dcdc6", tps65218_pmic_regs
[DCDC6
]),
98 TPS65218_OF_MATCH("ti,tps65218-ldo1", tps65218_pmic_regs
[LDO1
]),
101 MODULE_DEVICE_TABLE(of
, tps65218_of_match
);
103 static int tps65218_pmic_set_voltage_sel(struct regulator_dev
*dev
,
107 struct tps65218
*tps
= rdev_get_drvdata(dev
);
108 unsigned int rid
= rdev_get_id(dev
);
110 /* Set the voltage based on vsel value and write protect level is 2 */
111 ret
= tps65218_set_bits(tps
, dev
->desc
->vsel_reg
, dev
->desc
->vsel_mask
,
112 selector
, TPS65218_PROTECT_L1
);
114 /* Set GO bit for DCDC1/2 to initiate voltage transistion */
116 case TPS65218_DCDC_1
:
117 case TPS65218_DCDC_2
:
118 ret
= tps65218_set_bits(tps
, TPS65218_REG_CONTRL_SLEW_RATE
,
119 TPS65218_SLEW_RATE_GO
,
120 TPS65218_SLEW_RATE_GO
,
121 TPS65218_PROTECT_L1
);
128 static int tps65218_pmic_enable(struct regulator_dev
*dev
)
130 struct tps65218
*tps
= rdev_get_drvdata(dev
);
131 unsigned int rid
= rdev_get_id(dev
);
133 if (rid
< TPS65218_DCDC_1
|| rid
> TPS65218_LDO_1
)
136 /* Enable the regulator and password protection is level 1 */
137 return tps65218_set_bits(tps
, dev
->desc
->enable_reg
,
138 dev
->desc
->enable_mask
, dev
->desc
->enable_mask
,
139 TPS65218_PROTECT_L1
);
142 static int tps65218_pmic_disable(struct regulator_dev
*dev
)
144 struct tps65218
*tps
= rdev_get_drvdata(dev
);
145 unsigned int rid
= rdev_get_id(dev
);
147 if (rid
< TPS65218_DCDC_1
|| rid
> TPS65218_LDO_1
)
150 /* Disable the regulator and password protection is level 1 */
151 return tps65218_clear_bits(tps
, dev
->desc
->enable_reg
,
152 dev
->desc
->enable_mask
, TPS65218_PROTECT_L1
);
155 static int tps65218_set_voltage_time_sel(struct regulator_dev
*rdev
,
156 unsigned int old_selector
, unsigned int new_selector
)
160 old_uv
= regulator_list_voltage_linear_range(rdev
, old_selector
);
164 new_uv
= regulator_list_voltage_linear_range(rdev
, new_selector
);
168 return DIV_ROUND_UP(abs(old_uv
- new_uv
), tps65218_ramp_delay
);
171 /* Operations permitted on DCDC1, DCDC2 */
172 static struct regulator_ops tps65218_dcdc12_ops
= {
173 .is_enabled
= regulator_is_enabled_regmap
,
174 .enable
= tps65218_pmic_enable
,
175 .disable
= tps65218_pmic_disable
,
176 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
177 .set_voltage_sel
= tps65218_pmic_set_voltage_sel
,
178 .list_voltage
= regulator_list_voltage_linear_range
,
179 .map_voltage
= regulator_map_voltage_linear_range
,
180 .set_voltage_time_sel
= tps65218_set_voltage_time_sel
,
183 /* Operations permitted on DCDC3, DCDC4 and LDO1 */
184 static struct regulator_ops tps65218_ldo1_dcdc34_ops
= {
185 .is_enabled
= regulator_is_enabled_regmap
,
186 .enable
= tps65218_pmic_enable
,
187 .disable
= tps65218_pmic_disable
,
188 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
189 .set_voltage_sel
= tps65218_pmic_set_voltage_sel
,
190 .list_voltage
= regulator_list_voltage_linear_range
,
191 .map_voltage
= regulator_map_voltage_linear_range
,
194 /* Operations permitted on DCDC5, DCDC6 */
195 static struct regulator_ops tps65218_dcdc56_pmic_ops
= {
196 .is_enabled
= regulator_is_enabled_regmap
,
197 .enable
= tps65218_pmic_enable
,
198 .disable
= tps65218_pmic_disable
,
201 static const struct regulator_desc regulators
[] = {
202 TPS65218_REGULATOR("DCDC1", TPS65218_DCDC_1
, tps65218_dcdc12_ops
, 64,
203 TPS65218_REG_CONTROL_DCDC1
,
204 TPS65218_CONTROL_DCDC1_MASK
,
205 TPS65218_REG_ENABLE1
, TPS65218_ENABLE1_DC1_EN
, NULL
,
206 dcdc1_dcdc2_ranges
, 2),
207 TPS65218_REGULATOR("DCDC2", TPS65218_DCDC_2
, tps65218_dcdc12_ops
, 64,
208 TPS65218_REG_CONTROL_DCDC2
,
209 TPS65218_CONTROL_DCDC2_MASK
,
210 TPS65218_REG_ENABLE1
, TPS65218_ENABLE1_DC2_EN
, NULL
,
211 dcdc1_dcdc2_ranges
, 2),
212 TPS65218_REGULATOR("DCDC3", TPS65218_DCDC_3
, tps65218_ldo1_dcdc34_ops
,
213 64, TPS65218_REG_CONTROL_DCDC3
,
214 TPS65218_CONTROL_DCDC3_MASK
, TPS65218_REG_ENABLE1
,
215 TPS65218_ENABLE1_DC3_EN
, NULL
,
216 ldo1_dcdc3_ranges
, 2),
217 TPS65218_REGULATOR("DCDC4", TPS65218_DCDC_4
, tps65218_ldo1_dcdc34_ops
,
218 53, TPS65218_REG_CONTROL_DCDC4
,
219 TPS65218_CONTROL_DCDC4_MASK
,
220 TPS65218_REG_ENABLE1
, TPS65218_ENABLE1_DC4_EN
, NULL
,
222 TPS65218_REGULATOR("DCDC5", TPS65218_DCDC_5
, tps65218_dcdc56_pmic_ops
,
223 1, -1, -1, TPS65218_REG_ENABLE1
,
224 TPS65218_ENABLE1_DC5_EN
, NULL
, NULL
, 0),
225 TPS65218_REGULATOR("DCDC6", TPS65218_DCDC_6
, tps65218_dcdc56_pmic_ops
,
226 1, -1, -1, TPS65218_REG_ENABLE1
,
227 TPS65218_ENABLE1_DC6_EN
, NULL
, NULL
, 0),
228 TPS65218_REGULATOR("LDO1", TPS65218_LDO_1
, tps65218_ldo1_dcdc34_ops
, 64,
229 TPS65218_REG_CONTROL_DCDC4
,
230 TPS65218_CONTROL_LDO1_MASK
, TPS65218_REG_ENABLE2
,
231 TPS65218_ENABLE2_LDO1_EN
, NULL
, ldo1_dcdc3_ranges
,
235 static int tps65218_regulator_probe(struct platform_device
*pdev
)
237 struct tps65218
*tps
= dev_get_drvdata(pdev
->dev
.parent
);
238 struct regulator_init_data
*init_data
;
239 const struct tps_info
*template;
240 struct regulator_dev
*rdev
;
241 const struct of_device_id
*match
;
242 struct regulator_config config
= { };
245 match
= of_match_device(tps65218_of_match
, &pdev
->dev
);
249 template = match
->data
;
251 init_data
= of_get_regulator_init_data(&pdev
->dev
, pdev
->dev
.of_node
);
253 platform_set_drvdata(pdev
, tps
);
255 tps
->info
[id
] = &tps65218_pmic_regs
[id
];
256 config
.dev
= &pdev
->dev
;
257 config
.init_data
= init_data
;
258 config
.driver_data
= tps
;
259 config
.regmap
= tps
->regmap
;
261 rdev
= devm_regulator_register(&pdev
->dev
, ®ulators
[id
], &config
);
263 dev_err(tps
->dev
, "failed to register %s regulator\n",
265 return PTR_ERR(rdev
);
271 static struct platform_driver tps65218_regulator_driver
= {
273 .name
= "tps65218-pmic",
274 .owner
= THIS_MODULE
,
275 .of_match_table
= tps65218_of_match
,
277 .probe
= tps65218_regulator_probe
,
280 module_platform_driver(tps65218_regulator_driver
);
282 MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
283 MODULE_DESCRIPTION("TPS65218 voltage regulator driver");
284 MODULE_ALIAS("platform:tps65218-pmic");
285 MODULE_LICENSE("GPL v2");