Merge patch series "Some style cleanups for recent extension additions"
[platform/kernel/linux-starfive.git] / drivers / mfd / tps65086.c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
4  *      Andrew F. Davis <afd@ti.com>
5  *
6  * Based on the TPS65912 driver
7  */
8
9 #include <linux/i2c.h>
10 #include <linux/interrupt.h>
11 #include <linux/mfd/core.h>
12 #include <linux/module.h>
13
14 #include <linux/mfd/tps65086.h>
15
16 static const struct mfd_cell tps65086_cells[] = {
17         { .name = "tps65086-regulator", },
18         { .name = "tps65086-gpio", },
19         { .name = "tps65086-reset", },
20 };
21
22 static const struct regmap_range tps65086_yes_ranges[] = {
23         regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
24         regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
25         regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
26         regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
27 };
28
29 static const struct regmap_access_table tps65086_volatile_table = {
30         .yes_ranges = tps65086_yes_ranges,
31         .n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
32 };
33
34 static const struct regmap_config tps65086_regmap_config = {
35         .reg_bits = 8,
36         .val_bits = 8,
37         .cache_type = REGCACHE_RBTREE,
38         .volatile_table = &tps65086_volatile_table,
39 };
40
41 static const struct regmap_irq tps65086_irqs[] = {
42         REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
43         REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
44         REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
45 };
46
47 static struct regmap_irq_chip tps65086_irq_chip = {
48         .name = "tps65086",
49         .status_base = TPS65086_IRQ,
50         .mask_base = TPS65086_IRQ_MASK,
51         .ack_base = TPS65086_IRQ,
52         .init_ack_masked = true,
53         .num_regs = 1,
54         .irqs = tps65086_irqs,
55         .num_irqs = ARRAY_SIZE(tps65086_irqs),
56 };
57
58 static const struct of_device_id tps65086_of_match_table[] = {
59         { .compatible = "ti,tps65086", },
60         { /* sentinel */ }
61 };
62 MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
63
64 static int tps65086_probe(struct i2c_client *client,
65                           const struct i2c_device_id *ids)
66 {
67         struct tps65086 *tps;
68         unsigned int version;
69         int ret;
70
71         tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
72         if (!tps)
73                 return -ENOMEM;
74
75         i2c_set_clientdata(client, tps);
76         tps->dev = &client->dev;
77         tps->irq = client->irq;
78
79         tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
80         if (IS_ERR(tps->regmap)) {
81                 dev_err(tps->dev, "Failed to initialize register map\n");
82                 return PTR_ERR(tps->regmap);
83         }
84
85         ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version);
86         if (ret) {
87                 dev_err(tps->dev, "Failed to read revision register\n");
88                 return ret;
89         }
90
91         dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
92                  (version & TPS65086_DEVICEID_PART_MASK),
93                  (char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A',
94                  (version & TPS65086_DEVICEID_REV_MASK) >> 6);
95
96         if (tps->irq > 0) {
97                 ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
98                                           &tps65086_irq_chip, &tps->irq_data);
99                 if (ret) {
100                         dev_err(tps->dev, "Failed to register IRQ chip\n");
101                         return ret;
102                 }
103         }
104
105         ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
106                               ARRAY_SIZE(tps65086_cells), NULL, 0,
107                               regmap_irq_get_domain(tps->irq_data));
108         if (ret && tps->irq > 0)
109                 regmap_del_irq_chip(tps->irq, tps->irq_data);
110
111         return ret;
112 }
113
114 static void tps65086_remove(struct i2c_client *client)
115 {
116         struct tps65086 *tps = i2c_get_clientdata(client);
117
118         if (tps->irq > 0)
119                 regmap_del_irq_chip(tps->irq, tps->irq_data);
120 }
121
122 static const struct i2c_device_id tps65086_id_table[] = {
123         { "tps65086", 0 },
124         { /* sentinel */ }
125 };
126 MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
127
128 static struct i2c_driver tps65086_driver = {
129         .driver         = {
130                 .name   = "tps65086",
131                 .of_match_table = tps65086_of_match_table,
132         },
133         .probe          = tps65086_probe,
134         .remove         = tps65086_remove,
135         .id_table       = tps65086_id_table,
136 };
137 module_i2c_driver(tps65086_driver);
138
139 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
140 MODULE_DESCRIPTION("TPS65086 PMIC Driver");
141 MODULE_LICENSE("GPL v2");