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) \
35 .type = REGULATOR_VOLTAGE, \
36 .owner = THIS_MODULE, \
39 #define TPS65217_INFO(_nm, _min, _max, _f1, _f2, _t, _n, _em, _vr, _vm) \
49 .set_vout_reg = _vr, \
50 .set_vout_mask = _vm, \
53 static const 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
, NULL
, 64, TPS65217_ENABLE_DC1_EN
,
131 TPS65217_REG_DEFDCDC1
, TPS65217_DEFDCDCX_DCDC_MASK
),
132 TPS65217_INFO("DCDC2", 900000, 3300000, tps65217_vsel_to_uv1
,
133 tps65217_uv_to_vsel1
, NULL
, 64, TPS65217_ENABLE_DC2_EN
,
134 TPS65217_REG_DEFDCDC2
, TPS65217_DEFDCDCX_DCDC_MASK
),
135 TPS65217_INFO("DCDC3", 900000, 1500000, tps65217_vsel_to_uv1
,
136 tps65217_uv_to_vsel1
, NULL
, 64, TPS65217_ENABLE_DC3_EN
,
137 TPS65217_REG_DEFDCDC3
, TPS65217_DEFDCDCX_DCDC_MASK
),
138 TPS65217_INFO("LDO1", 1000000, 3300000, NULL
, NULL
, LDO1_VSEL_table
,
139 16, TPS65217_ENABLE_LDO1_EN
, TPS65217_REG_DEFLDO1
,
140 TPS65217_DEFLDO1_LDO1_MASK
),
141 TPS65217_INFO("LDO2", 900000, 3300000, tps65217_vsel_to_uv1
,
142 tps65217_uv_to_vsel1
, NULL
, 64, TPS65217_ENABLE_LDO2_EN
,
143 TPS65217_REG_DEFLDO2
, TPS65217_DEFLDO2_LDO2_MASK
),
144 TPS65217_INFO("LDO3", 1800000, 3300000, tps65217_vsel_to_uv2
,
145 tps65217_uv_to_vsel2
, NULL
, 32,
146 TPS65217_ENABLE_LS1_EN
| TPS65217_DEFLDO3_LDO3_EN
,
147 TPS65217_REG_DEFLS1
, TPS65217_DEFLDO3_LDO3_MASK
),
148 TPS65217_INFO("LDO4", 1800000, 3300000, tps65217_vsel_to_uv2
,
149 tps65217_uv_to_vsel2
, NULL
, 32,
150 TPS65217_ENABLE_LS2_EN
| TPS65217_DEFLDO4_LDO4_EN
,
151 TPS65217_REG_DEFLS2
, TPS65217_DEFLDO4_LDO4_MASK
),
154 static int tps65217_pmic_is_enabled(struct regulator_dev
*dev
)
157 struct tps65217
*tps
= rdev_get_drvdata(dev
);
158 unsigned int data
, rid
= rdev_get_id(dev
);
160 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
163 ret
= tps65217_reg_read(tps
, TPS65217_REG_ENABLE
, &data
);
167 return (data
& tps
->info
[rid
]->enable_mask
) ? 1 : 0;
170 static int tps65217_pmic_enable(struct regulator_dev
*dev
)
172 struct tps65217
*tps
= rdev_get_drvdata(dev
);
173 unsigned int rid
= rdev_get_id(dev
);
175 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
178 /* Enable the regulator and password protection is level 1 */
179 return tps65217_set_bits(tps
, TPS65217_REG_ENABLE
,
180 tps
->info
[rid
]->enable_mask
,
181 tps
->info
[rid
]->enable_mask
,
182 TPS65217_PROTECT_L1
);
185 static int tps65217_pmic_disable(struct regulator_dev
*dev
)
187 struct tps65217
*tps
= rdev_get_drvdata(dev
);
188 unsigned int rid
= rdev_get_id(dev
);
190 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
193 /* Disable the regulator and password protection is level 1 */
194 return tps65217_clear_bits(tps
, TPS65217_REG_ENABLE
,
195 tps
->info
[rid
]->enable_mask
, TPS65217_PROTECT_L1
);
198 static int tps65217_pmic_get_voltage_sel(struct regulator_dev
*dev
)
201 struct tps65217
*tps
= rdev_get_drvdata(dev
);
202 unsigned int selector
, rid
= rdev_get_id(dev
);
204 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
207 ret
= tps65217_reg_read(tps
, tps
->info
[rid
]->set_vout_reg
, &selector
);
211 selector
&= tps
->info
[rid
]->set_vout_mask
;
216 static int tps65217_pmic_ldo1_set_voltage_sel(struct regulator_dev
*dev
,
219 struct tps65217
*tps
= rdev_get_drvdata(dev
);
220 int ldo
= rdev_get_id(dev
);
222 if (ldo
!= TPS65217_LDO_1
)
225 if (selector
>= tps
->info
[ldo
]->table_len
)
228 /* Set the voltage based on vsel value and write protect level is 2 */
229 return tps65217_set_bits(tps
, tps
->info
[ldo
]->set_vout_reg
,
230 tps
->info
[ldo
]->set_vout_mask
,
231 selector
, TPS65217_PROTECT_L2
);
234 static int tps65217_pmic_set_voltage(struct regulator_dev
*dev
,
235 int min_uV
, int max_uV
, unsigned *selector
)
238 struct tps65217
*tps
= rdev_get_drvdata(dev
);
239 unsigned int rid
= rdev_get_id(dev
);
241 /* LDO1 implements set_voltage_sel callback */
242 if (rid
== TPS65217_LDO_1
)
245 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
248 if (min_uV
< tps
->info
[rid
]->min_uV
249 || min_uV
> tps
->info
[rid
]->max_uV
)
252 if (max_uV
< tps
->info
[rid
]->min_uV
253 || max_uV
> tps
->info
[rid
]->max_uV
)
256 ret
= tps
->info
[rid
]->uv_to_vsel(min_uV
, selector
);
260 /* Set the voltage based on vsel value and write protect level is 2 */
261 ret
= tps65217_set_bits(tps
, tps
->info
[rid
]->set_vout_reg
,
262 tps
->info
[rid
]->set_vout_mask
,
263 *selector
, TPS65217_PROTECT_L2
);
265 /* Set GO bit for DCDCx to initiate voltage transistion */
267 case TPS65217_DCDC_1
... TPS65217_DCDC_3
:
268 ret
= tps65217_set_bits(tps
, TPS65217_REG_DEFSLEW
,
269 TPS65217_DEFSLEW_GO
, TPS65217_DEFSLEW_GO
,
270 TPS65217_PROTECT_L2
);
277 static int tps65217_pmic_list_voltage(struct regulator_dev
*dev
,
280 struct tps65217
*tps
= rdev_get_drvdata(dev
);
281 unsigned int rid
= rdev_get_id(dev
);
283 if (rid
< TPS65217_DCDC_1
|| rid
> TPS65217_LDO_4
)
286 if (selector
>= tps
->info
[rid
]->table_len
)
289 if (tps
->info
[rid
]->table
)
290 return tps
->info
[rid
]->table
[selector
];
292 return tps
->info
[rid
]->vsel_to_uv(selector
);
295 /* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */
296 static struct regulator_ops tps65217_pmic_ops
= {
297 .is_enabled
= tps65217_pmic_is_enabled
,
298 .enable
= tps65217_pmic_enable
,
299 .disable
= tps65217_pmic_disable
,
300 .get_voltage_sel
= tps65217_pmic_get_voltage_sel
,
301 .set_voltage
= tps65217_pmic_set_voltage
,
302 .list_voltage
= tps65217_pmic_list_voltage
,
305 /* Operations permitted on LDO1 */
306 static struct regulator_ops tps65217_pmic_ldo1_ops
= {
307 .is_enabled
= tps65217_pmic_is_enabled
,
308 .enable
= tps65217_pmic_enable
,
309 .disable
= tps65217_pmic_disable
,
310 .get_voltage_sel
= tps65217_pmic_get_voltage_sel
,
311 .set_voltage_sel
= tps65217_pmic_ldo1_set_voltage_sel
,
312 .list_voltage
= tps65217_pmic_list_voltage
,
315 static struct regulator_desc regulators
[] = {
316 TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1
, tps65217_pmic_ops
, 64),
317 TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2
, tps65217_pmic_ops
, 64),
318 TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3
, tps65217_pmic_ops
, 64),
319 TPS65217_REGULATOR("LDO1", TPS65217_LDO_1
, tps65217_pmic_ldo1_ops
, 16),
320 TPS65217_REGULATOR("LDO2", TPS65217_LDO_2
, tps65217_pmic_ops
, 64),
321 TPS65217_REGULATOR("LDO3", TPS65217_LDO_3
, tps65217_pmic_ops
, 32),
322 TPS65217_REGULATOR("LDO4", TPS65217_LDO_4
, tps65217_pmic_ops
, 32),
325 static int __devinit
tps65217_regulator_probe(struct platform_device
*pdev
)
327 struct regulator_dev
*rdev
;
328 struct tps65217
*tps
;
329 struct tps_info
*info
= &tps65217_pmic_regs
[pdev
->id
];
331 /* Already set by core driver */
332 tps
= dev_to_tps65217(pdev
->dev
.parent
);
333 tps
->info
[pdev
->id
] = info
;
335 rdev
= regulator_register(®ulators
[pdev
->id
], &pdev
->dev
,
336 pdev
->dev
.platform_data
, tps
, NULL
);
338 return PTR_ERR(rdev
);
340 platform_set_drvdata(pdev
, rdev
);
345 static int __devexit
tps65217_regulator_remove(struct platform_device
*pdev
)
347 struct regulator_dev
*rdev
= platform_get_drvdata(pdev
);
349 platform_set_drvdata(pdev
, NULL
);
350 regulator_unregister(rdev
);
355 static struct platform_driver tps65217_regulator_driver
= {
357 .name
= "tps65217-pmic",
359 .probe
= tps65217_regulator_probe
,
360 .remove
= __devexit_p(tps65217_regulator_remove
),
363 static int __init
tps65217_regulator_init(void)
365 return platform_driver_register(&tps65217_regulator_driver
);
367 subsys_initcall(tps65217_regulator_init
);
369 static void __exit
tps65217_regulator_exit(void)
371 platform_driver_unregister(&tps65217_regulator_driver
);
373 module_exit(tps65217_regulator_exit
);
375 MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
376 MODULE_DESCRIPTION("TPS65217 voltage regulator driver");
377 MODULE_ALIAS("platform:tps65217-pmic");
378 MODULE_LICENSE("GPL v2");