2 * Regulator driver for tps65090 power management chip.
4 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>
19 #include <linux/module.h>
20 #include <linux/init.h>
21 #include <linux/slab.h>
22 #include <linux/err.h>
23 #include <linux/platform_device.h>
24 #include <linux/regulator/driver.h>
25 #include <linux/regulator/machine.h>
26 #include <linux/mfd/tps65090.h>
27 #include <linux/regulator/tps65090-regulator.h>
29 struct tps65090_regulator
{
31 /* used by regulator core */
32 struct regulator_desc desc
;
38 static struct regulator_ops tps65090_ops
= {
39 .enable
= regulator_enable_regmap
,
40 .disable
= regulator_disable_regmap
,
41 .is_enabled
= regulator_is_enabled_regmap
,
44 #define tps65090_REG(_id) \
46 .id = TPS65090_ID_##_id, \
48 .name = tps65090_rails(_id), \
49 .id = TPS65090_ID_##_id, \
50 .ops = &tps65090_ops, \
51 .type = REGULATOR_VOLTAGE, \
52 .owner = THIS_MODULE, \
53 .enable_reg = (TPS65090_ID_##_id) + 12, \
54 .enable_mask = BIT(0), \
58 static struct tps65090_regulator TPS65090_regulator
[] = {
71 static inline struct tps65090_regulator
*find_regulator_info(int id
)
73 struct tps65090_regulator
*ri
;
76 for (i
= 0; i
< ARRAY_SIZE(TPS65090_regulator
); i
++) {
77 ri
= &TPS65090_regulator
[i
];
78 if (ri
->desc
.id
== id
)
84 static int __devinit
tps65090_regulator_probe(struct platform_device
*pdev
)
86 struct tps65090
*tps65090_mfd
= dev_get_drvdata(pdev
->dev
.parent
);
87 struct tps65090_regulator
*ri
= NULL
;
88 struct regulator_config config
= { };
89 struct regulator_dev
*rdev
;
90 struct tps65090_regulator_platform_data
*tps_pdata
;
93 dev_dbg(&pdev
->dev
, "Probing regulator %d\n", id
);
95 ri
= find_regulator_info(id
);
97 dev_err(&pdev
->dev
, "invalid regulator ID specified\n");
100 tps_pdata
= pdev
->dev
.platform_data
;
101 ri
->dev
= &pdev
->dev
;
103 config
.dev
= &pdev
->dev
;
104 config
.init_data
= &tps_pdata
->regulator
;
105 config
.driver_data
= ri
;
106 config
.regmap
= tps65090_mfd
->rmap
;
108 rdev
= regulator_register(&ri
->desc
, &config
);
110 dev_err(&pdev
->dev
, "failed to register regulator %s\n",
112 return PTR_ERR(rdev
);
115 platform_set_drvdata(pdev
, rdev
);
119 static int __devexit
tps65090_regulator_remove(struct platform_device
*pdev
)
121 struct regulator_dev
*rdev
= platform_get_drvdata(pdev
);
123 regulator_unregister(rdev
);
127 static struct platform_driver tps65090_regulator_driver
= {
129 .name
= "tps65090-regulator",
130 .owner
= THIS_MODULE
,
132 .probe
= tps65090_regulator_probe
,
133 .remove
= __devexit_p(tps65090_regulator_remove
),
136 static int __init
tps65090_regulator_init(void)
138 return platform_driver_register(&tps65090_regulator_driver
);
140 subsys_initcall(tps65090_regulator_init
);
142 static void __exit
tps65090_regulator_exit(void)
144 platform_driver_unregister(&tps65090_regulator_driver
);
146 module_exit(tps65090_regulator_exit
);
148 MODULE_DESCRIPTION("tps65090 regulator driver");
149 MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
150 MODULE_LICENSE("GPL v2");