4 * Regulator driver for TPS65217 PMIC
6 * Copyright (C) 2011 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 as
10 * published by the Free Software Foundation version 2.
12 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
13 * kind, whether express or implied; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License 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>
25 #include <linux/regulator/driver.h>
26 #include <linux/regulator/machine.h>
27 #include <linux/mfd/tps65217.h>
29 #define TPS65217_REGULATOR(_name, _id, _ops, _n, _vr, _vm, _em, _t) \
35 .type = REGULATOR_VOLTAGE, \
36 .owner = THIS_MODULE, \
39 .enable_reg = TPS65217_REG_ENABLE, \
44 #define TPS65217_INFO(_nm, _min, _max, _f1, _f2) \
53 static const unsigned int LDO1_VSEL_table
[] = {
54 1000000, 1100000, 1200000, 1250000,
55 1300000, 1350000, 1400000, 1500000,
56 1600000, 1800000, 2500000, 2750000,
57 2800000, 3000000, 3100000, 3300000,
60 static int tps65217_vsel_to_uv1(unsigned int vsel
)
68 uV
= vsel
* 25000 + 900000;
70 uV
= (vsel
- 24) * 50000 + 1500000;
72 uV
= (vsel
- 52) * 100000 + 2900000;
79 static int tps65217_uv_to_vsel1(int uV
, unsigned int *vsel
)
81 if (uV
< 0 || uV
> 3300000)
85 *vsel
= DIV_ROUND_UP(uV
- 900000, 25000);
86 else if (uV
<= 2900000)
87 *vsel
= 24 + DIV_ROUND_UP(uV
- 1500000, 50000);
88 else if (uV
< 3300000)
89 *vsel
= 52 + DIV_ROUND_UP(uV
- 2900000, 100000);
96 static int tps65217_vsel_to_uv2(unsigned int vsel
)
104 uV
= vsel
* 50000 + 1500000;
106 uV
= (vsel
- 8) * 100000 + 1900000;
108 uV
= (vsel
- 13) * 50000 + 2400000;
113 static int tps65217_uv_to_vsel2(int uV
, unsigned int *vsel
)
115 if (uV
< 0 || uV
> 3300000)
119 *vsel
= DIV_ROUND_UP(uV
- 1500000, 50000);
120 else if (uV
<= 2400000)
121 *vsel
= 8 + DIV_ROUND_UP(uV
- 1900000, 100000);
123 *vsel
= 13 + DIV_ROUND_UP(uV
- 2400000, 50000);
128 static struct tps_info tps65217_pmic_regs
[] = {
129 TPS65217_INFO("DCDC1", 900000, 1800000, tps65217_vsel_to_uv1
,
130 tps65217_uv_to_vsel1
),
131 TPS65217_INFO("DCDC2", 900000, 3300000, tps65217_vsel_to_uv1
,
132 tps65217_uv_to_vsel1
),
133 TPS65217_INFO("DCDC3", 900000, 1500000, tps65217_vsel_to_uv1
,
134 tps65217_uv_to_vsel1
),
135 TPS65217_INFO("LDO1", 1000000, 3300000, NULL
, NULL
),
136 TPS65217_INFO("LDO2", 900000, 3300000, tps65217_vsel_to_uv1
,
137 tps65217_uv_to_vsel1
),
138 TPS65217_INFO("LDO3", 1800000, 3300000, tps65217_vsel_to_uv2
,
139 tps65217_uv_to_vsel2
),
140 TPS65217_INFO("LDO4", 1800000, 3300000, tps65217_vsel_to_uv2
,
141 tps65217_uv_to_vsel2
),
144 static int tps65217_pmic_enable(struct regulator_dev
*dev
)
146 struct tps65217
*tps
= rdev_get_drvdata(dev
);
147 unsigned int rid
= rdev_get_id(dev
);
149 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
152 /* Enable the regulator and password protection is level 1 */
153 return tps65217_set_bits(tps
, TPS65217_REG_ENABLE
,
154 dev
->desc
->enable_mask
, dev
->desc
->enable_mask
,
155 TPS65217_PROTECT_L1
);
158 static int tps65217_pmic_disable(struct regulator_dev
*dev
)
160 struct tps65217
*tps
= rdev_get_drvdata(dev
);
161 unsigned int rid
= rdev_get_id(dev
);
163 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
166 /* Disable the regulator and password protection is level 1 */
167 return tps65217_clear_bits(tps
, TPS65217_REG_ENABLE
,
168 dev
->desc
->enable_mask
, TPS65217_PROTECT_L1
);
171 static int tps65217_pmic_set_voltage_sel(struct regulator_dev
*dev
,
175 struct tps65217
*tps
= rdev_get_drvdata(dev
);
176 unsigned int rid
= rdev_get_id(dev
);
178 /* Set the voltage based on vsel value and write protect level is 2 */
179 ret
= tps65217_set_bits(tps
, dev
->desc
->vsel_reg
, dev
->desc
->vsel_mask
,
180 selector
, TPS65217_PROTECT_L2
);
182 /* Set GO bit for DCDCx to initiate voltage transistion */
184 case TPS65217_DCDC_1
... TPS65217_DCDC_3
:
185 ret
= tps65217_set_bits(tps
, TPS65217_REG_DEFSLEW
,
186 TPS65217_DEFSLEW_GO
, TPS65217_DEFSLEW_GO
,
187 TPS65217_PROTECT_L2
);
194 static int tps65217_pmic_map_voltage(struct regulator_dev
*dev
,
195 int min_uV
, int max_uV
)
198 struct tps65217
*tps
= rdev_get_drvdata(dev
);
199 unsigned int sel
, rid
= rdev_get_id(dev
);
202 /* LDO1 uses regulator_map_voltage_iterate() */
203 if (rid
== TPS65217_LDO_1
)
206 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
209 if (min_uV
< tps
->info
[rid
]->min_uV
)
210 min_uV
= tps
->info
[rid
]->min_uV
;
212 if (max_uV
< tps
->info
[rid
]->min_uV
|| min_uV
> tps
->info
[rid
]->max_uV
)
215 ret
= tps
->info
[rid
]->uv_to_vsel(min_uV
, &sel
);
222 static int tps65217_pmic_list_voltage(struct regulator_dev
*dev
,
225 struct tps65217
*tps
= rdev_get_drvdata(dev
);
226 unsigned int rid
= rdev_get_id(dev
);
228 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
231 if (selector
>= dev
->desc
->n_voltages
)
234 return tps
->info
[rid
]->vsel_to_uv(selector
);
237 /* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
238 static struct regulator_ops tps65217_pmic_ops
= {
239 .is_enabled
= regulator_is_enabled_regmap
,
240 .enable
= tps65217_pmic_enable
,
241 .disable
= tps65217_pmic_disable
,
242 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
243 .set_voltage_sel
= tps65217_pmic_set_voltage_sel
,
244 .list_voltage
= tps65217_pmic_list_voltage
,
245 .map_voltage
= tps65217_pmic_map_voltage
,
248 /* Operations permitted on LDO1 */
249 static struct regulator_ops tps65217_pmic_ldo1_ops
= {
250 .is_enabled
= regulator_is_enabled_regmap
,
251 .enable
= tps65217_pmic_enable
,
252 .disable
= tps65217_pmic_disable
,
253 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
254 .set_voltage_sel
= tps65217_pmic_set_voltage_sel
,
255 .list_voltage
= regulator_list_voltage_table
,
258 static const struct regulator_desc regulators
[] = {
259 TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1
, tps65217_pmic_ops
, 64,
260 TPS65217_REG_DEFDCDC1
, TPS65217_DEFDCDCX_DCDC_MASK
,
261 TPS65217_ENABLE_DC1_EN
, NULL
),
262 TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2
, tps65217_pmic_ops
, 64,
263 TPS65217_REG_DEFDCDC2
, TPS65217_DEFDCDCX_DCDC_MASK
,
264 TPS65217_ENABLE_DC2_EN
, NULL
),
265 TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3
, tps65217_pmic_ops
, 64,
266 TPS65217_REG_DEFDCDC3
, TPS65217_DEFDCDCX_DCDC_MASK
,
267 TPS65217_ENABLE_DC3_EN
, NULL
),
268 TPS65217_REGULATOR("LDO1", TPS65217_LDO_1
, tps65217_pmic_ldo1_ops
, 16,
269 TPS65217_REG_DEFLDO1
, TPS65217_DEFLDO1_LDO1_MASK
,
270 TPS65217_ENABLE_LDO1_EN
, LDO1_VSEL_table
),
271 TPS65217_REGULATOR("LDO2", TPS65217_LDO_2
, tps65217_pmic_ops
, 64,
272 TPS65217_REG_DEFLDO2
, TPS65217_DEFLDO2_LDO2_MASK
,
273 TPS65217_ENABLE_LDO2_EN
, NULL
),
274 TPS65217_REGULATOR("LDO3", TPS65217_LDO_3
, tps65217_pmic_ops
, 32,
275 TPS65217_REG_DEFLS1
, TPS65217_DEFLDO3_LDO3_MASK
,
276 TPS65217_ENABLE_LS1_EN
| TPS65217_DEFLDO3_LDO3_EN
,
278 TPS65217_REGULATOR("LDO4", TPS65217_LDO_4
, tps65217_pmic_ops
, 32,
279 TPS65217_REG_DEFLS2
, TPS65217_DEFLDO4_LDO4_MASK
,
280 TPS65217_ENABLE_LS2_EN
| TPS65217_DEFLDO4_LDO4_EN
,
284 static int __devinit
tps65217_regulator_probe(struct platform_device
*pdev
)
286 struct regulator_dev
*rdev
;
287 struct tps65217
*tps
;
288 struct tps_info
*info
= &tps65217_pmic_regs
[pdev
->id
];
289 struct regulator_config config
= { };
291 /* Already set by core driver */
292 tps
= dev_to_tps65217(pdev
->dev
.parent
);
293 tps
->info
[pdev
->id
] = info
;
295 config
.dev
= &pdev
->dev
;
296 config
.of_node
= pdev
->dev
.of_node
;
297 config
.init_data
= pdev
->dev
.platform_data
;
298 config
.driver_data
= tps
;
300 rdev
= regulator_register(®ulators
[pdev
->id
], &config
);
302 return PTR_ERR(rdev
);
304 platform_set_drvdata(pdev
, rdev
);
309 static int __devexit
tps65217_regulator_remove(struct platform_device
*pdev
)
311 struct regulator_dev
*rdev
= platform_get_drvdata(pdev
);
313 platform_set_drvdata(pdev
, NULL
);
314 regulator_unregister(rdev
);
319 static struct platform_driver tps65217_regulator_driver
= {
321 .name
= "tps65217-pmic",
323 .probe
= tps65217_regulator_probe
,
324 .remove
= __devexit_p(tps65217_regulator_remove
),
327 static int __init
tps65217_regulator_init(void)
329 return platform_driver_register(&tps65217_regulator_driver
);
331 subsys_initcall(tps65217_regulator_init
);
333 static void __exit
tps65217_regulator_exit(void)
335 platform_driver_unregister(&tps65217_regulator_driver
);
337 module_exit(tps65217_regulator_exit
);
339 MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
340 MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
341 MODULE_ALIAS("platform:tps65217-pmic");
342 MODULE_LICENSE("GPL v2");