4 * Supports TPS65023 Regulator
6 * Copyright (C) 2009 Texas Instrument 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 kind,
13 * whether express or implied; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/err.h>
22 #include <linux/platform_device.h>
23 #include <linux/regulator/driver.h>
24 #include <linux/regulator/machine.h>
25 #include <linux/i2c.h>
26 #include <linux/slab.h>
27 #include <linux/regmap.h>
29 /* Register definitions */
30 #define TPS65023_REG_VERSION 0
31 #define TPS65023_REG_PGOODZ 1
32 #define TPS65023_REG_MASK 2
33 #define TPS65023_REG_REG_CTRL 3
34 #define TPS65023_REG_CON_CTRL 4
35 #define TPS65023_REG_CON_CTRL2 5
36 #define TPS65023_REG_DEF_CORE 6
37 #define TPS65023_REG_DEFSLEW 7
38 #define TPS65023_REG_LDO_CTRL 8
40 /* PGOODZ bitfields */
41 #define TPS65023_PGOODZ_PWRFAILZ BIT(7)
42 #define TPS65023_PGOODZ_LOWBATTZ BIT(6)
43 #define TPS65023_PGOODZ_VDCDC1 BIT(5)
44 #define TPS65023_PGOODZ_VDCDC2 BIT(4)
45 #define TPS65023_PGOODZ_VDCDC3 BIT(3)
46 #define TPS65023_PGOODZ_LDO2 BIT(2)
47 #define TPS65023_PGOODZ_LDO1 BIT(1)
50 #define TPS65023_MASK_PWRFAILZ BIT(7)
51 #define TPS65023_MASK_LOWBATTZ BIT(6)
52 #define TPS65023_MASK_VDCDC1 BIT(5)
53 #define TPS65023_MASK_VDCDC2 BIT(4)
54 #define TPS65023_MASK_VDCDC3 BIT(3)
55 #define TPS65023_MASK_LDO2 BIT(2)
56 #define TPS65023_MASK_LDO1 BIT(1)
58 /* REG_CTRL bitfields */
59 #define TPS65023_REG_CTRL_VDCDC1_EN BIT(5)
60 #define TPS65023_REG_CTRL_VDCDC2_EN BIT(4)
61 #define TPS65023_REG_CTRL_VDCDC3_EN BIT(3)
62 #define TPS65023_REG_CTRL_LDO2_EN BIT(2)
63 #define TPS65023_REG_CTRL_LDO1_EN BIT(1)
65 /* REG_CTRL2 bitfields */
66 #define TPS65023_REG_CTRL2_GO BIT(7)
67 #define TPS65023_REG_CTRL2_CORE_ADJ BIT(6)
68 #define TPS65023_REG_CTRL2_DCDC2 BIT(2)
69 #define TPS65023_REG_CTRL2_DCDC1 BIT(1)
70 #define TPS65023_REG_CTRL2_DCDC3 BIT(0)
72 /* Number of step-down converters available */
73 #define TPS65023_NUM_DCDC 3
74 /* Number of LDO voltage regulators available */
75 #define TPS65023_NUM_LDO 2
76 /* Number of total regulators available */
77 #define TPS65023_NUM_REGULATOR (TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
80 #define TPS65023_DCDC_1 0
81 #define TPS65023_DCDC_2 1
82 #define TPS65023_DCDC_3 2
84 #define TPS65023_LDO_1 3
85 #define TPS65023_LDO_2 4
87 #define TPS65023_MAX_REG_ID TPS65023_LDO_2
89 /* Supported voltage values for regulators */
90 static const unsigned int VCORE_VSEL_table
[] = {
91 800000, 825000, 850000, 875000,
92 900000, 925000, 950000, 975000,
93 1000000, 1025000, 1050000, 1075000,
94 1100000, 1125000, 1150000, 1175000,
95 1200000, 1225000, 1250000, 1275000,
96 1300000, 1325000, 1350000, 1375000,
97 1400000, 1425000, 1450000, 1475000,
98 1500000, 1525000, 1550000, 1600000,
101 static const unsigned int DCDC_FIXED_3300000_VSEL_table
[] = {
105 static const unsigned int DCDC_FIXED_1800000_VSEL_table
[] = {
109 /* Supported voltage values for LDO regulators for tps65020 */
110 static const unsigned int TPS65020_LDO1_VSEL_table
[] = {
111 1000000, 1050000, 1100000, 1300000,
112 1800000, 2500000, 3000000, 3300000,
115 static const unsigned int TPS65020_LDO2_VSEL_table
[] = {
116 1000000, 1050000, 1100000, 1300000,
117 1800000, 2500000, 3000000, 3300000,
120 /* Supported voltage values for LDO regulators
121 * for tps65021 and tps65023 */
122 static const unsigned int TPS65023_LDO1_VSEL_table
[] = {
123 1000000, 1100000, 1300000, 1800000,
124 2200000, 2600000, 2800000, 3150000,
127 static const unsigned int TPS65023_LDO2_VSEL_table
[] = {
128 1050000, 1200000, 1300000, 1800000,
129 2500000, 2800000, 3000000, 3300000,
132 /* Regulator specific details */
136 const unsigned int *table
;
141 struct regulator_desc desc
[TPS65023_NUM_REGULATOR
];
142 struct regulator_dev
*rdev
[TPS65023_NUM_REGULATOR
];
143 const struct tps_info
*info
[TPS65023_NUM_REGULATOR
];
144 struct regmap
*regmap
;
148 /* Struct passed as driver data */
149 struct tps_driver_data
{
150 const struct tps_info
*info
;
154 static int tps65023_dcdc_get_voltage_sel(struct regulator_dev
*dev
)
156 struct tps_pmic
*tps
= rdev_get_drvdata(dev
);
158 int data
, dcdc
= rdev_get_id(dev
);
160 if (dcdc
< TPS65023_DCDC_1
|| dcdc
> TPS65023_DCDC_3
)
163 if (dcdc
== tps
->core_regulator
) {
164 ret
= regmap_read(tps
->regmap
, TPS65023_REG_DEF_CORE
, &data
);
167 data
&= (tps
->info
[dcdc
]->table_len
- 1);
173 static int tps65023_dcdc_set_voltage_sel(struct regulator_dev
*dev
,
176 struct tps_pmic
*tps
= rdev_get_drvdata(dev
);
177 int dcdc
= rdev_get_id(dev
);
180 if (dcdc
!= tps
->core_regulator
)
183 ret
= regmap_write(tps
->regmap
, TPS65023_REG_DEF_CORE
, selector
);
187 /* Tell the chip that we have changed the value in DEFCORE
188 * and its time to update the core voltage
190 ret
= regmap_update_bits(tps
->regmap
, TPS65023_REG_CON_CTRL2
,
191 TPS65023_REG_CTRL2_GO
, TPS65023_REG_CTRL2_GO
);
197 /* Operations permitted on VDCDCx */
198 static struct regulator_ops tps65023_dcdc_ops
= {
199 .is_enabled
= regulator_is_enabled_regmap
,
200 .enable
= regulator_enable_regmap
,
201 .disable
= regulator_disable_regmap
,
202 .get_voltage_sel
= tps65023_dcdc_get_voltage_sel
,
203 .set_voltage_sel
= tps65023_dcdc_set_voltage_sel
,
204 .list_voltage
= regulator_list_voltage_table
,
207 /* Operations permitted on LDOx */
208 static struct regulator_ops tps65023_ldo_ops
= {
209 .is_enabled
= regulator_is_enabled_regmap
,
210 .enable
= regulator_enable_regmap
,
211 .disable
= regulator_disable_regmap
,
212 .get_voltage_sel
= regulator_get_voltage_sel_regmap
,
213 .set_voltage_sel
= regulator_set_voltage_sel_regmap
,
214 .list_voltage
= regulator_list_voltage_table
,
217 static struct regmap_config tps65023_regmap_config
= {
222 static int tps_65023_probe(struct i2c_client
*client
,
223 const struct i2c_device_id
*id
)
225 const struct tps_driver_data
*drv_data
= (void *)id
->driver_data
;
226 const struct tps_info
*info
= drv_data
->info
;
227 struct regulator_config config
= { };
228 struct regulator_init_data
*init_data
;
229 struct regulator_dev
*rdev
;
230 struct tps_pmic
*tps
;
234 if (!i2c_check_functionality(client
->adapter
, I2C_FUNC_SMBUS_BYTE_DATA
))
238 * init_data points to array of regulator_init structures
239 * coming from the board-evm file.
241 init_data
= client
->dev
.platform_data
;
245 tps
= devm_kzalloc(&client
->dev
, sizeof(*tps
), GFP_KERNEL
);
249 tps
->regmap
= devm_regmap_init_i2c(client
, &tps65023_regmap_config
);
250 if (IS_ERR(tps
->regmap
)) {
251 error
= PTR_ERR(tps
->regmap
);
252 dev_err(&client
->dev
, "Failed to allocate register map: %d\n",
257 /* common for all regulators */
258 tps
->core_regulator
= drv_data
->core_regulator
;
260 for (i
= 0; i
< TPS65023_NUM_REGULATOR
; i
++, info
++, init_data
++) {
261 /* Store regulator specific information */
264 tps
->desc
[i
].name
= info
->name
;
266 tps
->desc
[i
].n_voltages
= info
->table_len
;
267 tps
->desc
[i
].volt_table
= info
->table
;
268 tps
->desc
[i
].ops
= (i
> TPS65023_DCDC_3
?
269 &tps65023_ldo_ops
: &tps65023_dcdc_ops
);
270 tps
->desc
[i
].type
= REGULATOR_VOLTAGE
;
271 tps
->desc
[i
].owner
= THIS_MODULE
;
273 tps
->desc
[i
].enable_reg
= TPS65023_REG_REG_CTRL
;
276 tps
->desc
[i
].vsel_reg
= TPS65023_REG_LDO_CTRL
;
277 tps
->desc
[i
].vsel_mask
= 0x07;
278 tps
->desc
[i
].enable_mask
= 1 << 1;
281 tps
->desc
[i
].vsel_reg
= TPS65023_REG_LDO_CTRL
;
282 tps
->desc
[i
].vsel_mask
= 0x70;
283 tps
->desc
[i
].enable_mask
= 1 << 2;
286 tps
->desc
[i
].enable_mask
=
287 1 << (TPS65023_NUM_REGULATOR
- i
);
290 config
.dev
= &client
->dev
;
291 config
.init_data
= init_data
;
292 config
.driver_data
= tps
;
293 config
.regmap
= tps
->regmap
;
295 /* Register the regulators */
296 rdev
= regulator_register(&tps
->desc
[i
], &config
);
298 dev_err(&client
->dev
, "failed to register %s\n",
300 error
= PTR_ERR(rdev
);
304 /* Save regulator for cleanup */
308 i2c_set_clientdata(client
, tps
);
310 /* Enable setting output voltage by I2C */
311 regmap_update_bits(tps
->regmap
, TPS65023_REG_CON_CTRL2
,
312 TPS65023_REG_CTRL2_CORE_ADJ
, TPS65023_REG_CTRL2_CORE_ADJ
);
318 regulator_unregister(tps
->rdev
[i
]);
322 static int tps_65023_remove(struct i2c_client
*client
)
324 struct tps_pmic
*tps
= i2c_get_clientdata(client
);
327 for (i
= 0; i
< TPS65023_NUM_REGULATOR
; i
++)
328 regulator_unregister(tps
->rdev
[i
]);
332 static const struct tps_info tps65020_regs
[] = {
335 .table_len
= ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table
),
336 .table
= DCDC_FIXED_3300000_VSEL_table
,
340 .table_len
= ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table
),
341 .table
= DCDC_FIXED_1800000_VSEL_table
,
345 .table_len
= ARRAY_SIZE(VCORE_VSEL_table
),
346 .table
= VCORE_VSEL_table
,
350 .table_len
= ARRAY_SIZE(TPS65020_LDO1_VSEL_table
),
351 .table
= TPS65020_LDO1_VSEL_table
,
355 .table_len
= ARRAY_SIZE(TPS65020_LDO2_VSEL_table
),
356 .table
= TPS65020_LDO2_VSEL_table
,
360 static const struct tps_info tps65021_regs
[] = {
363 .table_len
= ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table
),
364 .table
= DCDC_FIXED_3300000_VSEL_table
,
368 .table_len
= ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table
),
369 .table
= DCDC_FIXED_1800000_VSEL_table
,
373 .table_len
= ARRAY_SIZE(VCORE_VSEL_table
),
374 .table
= VCORE_VSEL_table
,
378 .table_len
= ARRAY_SIZE(TPS65023_LDO1_VSEL_table
),
379 .table
= TPS65023_LDO1_VSEL_table
,
383 .table_len
= ARRAY_SIZE(TPS65023_LDO2_VSEL_table
),
384 .table
= TPS65023_LDO2_VSEL_table
,
388 static const struct tps_info tps65023_regs
[] = {
391 .table_len
= ARRAY_SIZE(VCORE_VSEL_table
),
392 .table
= VCORE_VSEL_table
,
396 .table_len
= ARRAY_SIZE(DCDC_FIXED_3300000_VSEL_table
),
397 .table
= DCDC_FIXED_3300000_VSEL_table
,
401 .table_len
= ARRAY_SIZE(DCDC_FIXED_1800000_VSEL_table
),
402 .table
= DCDC_FIXED_1800000_VSEL_table
,
406 .table_len
= ARRAY_SIZE(TPS65023_LDO1_VSEL_table
),
407 .table
= TPS65023_LDO1_VSEL_table
,
411 .table_len
= ARRAY_SIZE(TPS65023_LDO2_VSEL_table
),
412 .table
= TPS65023_LDO2_VSEL_table
,
416 static struct tps_driver_data tps65020_drv_data
= {
417 .info
= tps65020_regs
,
418 .core_regulator
= TPS65023_DCDC_3
,
421 static struct tps_driver_data tps65021_drv_data
= {
422 .info
= tps65021_regs
,
423 .core_regulator
= TPS65023_DCDC_3
,
426 static struct tps_driver_data tps65023_drv_data
= {
427 .info
= tps65023_regs
,
428 .core_regulator
= TPS65023_DCDC_1
,
431 static const struct i2c_device_id tps_65023_id
[] = {
433 .driver_data
= (unsigned long) &tps65023_drv_data
},
435 .driver_data
= (unsigned long) &tps65021_drv_data
,},
437 .driver_data
= (unsigned long) &tps65020_drv_data
},
441 MODULE_DEVICE_TABLE(i2c
, tps_65023_id
);
443 static struct i2c_driver tps_65023_i2c_driver
= {
446 .owner
= THIS_MODULE
,
448 .probe
= tps_65023_probe
,
449 .remove
= tps_65023_remove
,
450 .id_table
= tps_65023_id
,
453 static int __init
tps_65023_init(void)
455 return i2c_add_driver(&tps_65023_i2c_driver
);
457 subsys_initcall(tps_65023_init
);
459 static void __exit
tps_65023_cleanup(void)
461 i2c_del_driver(&tps_65023_i2c_driver
);
463 module_exit(tps_65023_cleanup
);
465 MODULE_AUTHOR("Texas Instruments");
466 MODULE_DESCRIPTION("TPS65023 voltage regulator driver");
467 MODULE_LICENSE("GPL v2");