1abd46274SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
2b45b719eSAndrew F. Davis /*
34f4ed454SAlexander A. Klimov * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
4b45b719eSAndrew F. Davis * Andrew F. Davis <afd@ti.com>
5b45b719eSAndrew F. Davis *
6b45b719eSAndrew F. Davis * Based on the TPS65912 driver
7b45b719eSAndrew F. Davis */
8b45b719eSAndrew F. Davis
9b45b719eSAndrew F. Davis #include <linux/i2c.h>
10b45b719eSAndrew F. Davis #include <linux/interrupt.h>
11b45b719eSAndrew F. Davis #include <linux/mfd/core.h>
12b45b719eSAndrew F. Davis #include <linux/module.h>
13b45b719eSAndrew F. Davis
14b45b719eSAndrew F. Davis #include <linux/mfd/tps65086.h>
15b45b719eSAndrew F. Davis
16b45b719eSAndrew F. Davis static const struct mfd_cell tps65086_cells[] = {
17b45b719eSAndrew F. Davis { .name = "tps65086-regulator", },
18b45b719eSAndrew F. Davis { .name = "tps65086-gpio", },
1972b89b9aSEmil Renner Berthing { .name = "tps65086-reset", },
20b45b719eSAndrew F. Davis };
21b45b719eSAndrew F. Davis
22b45b719eSAndrew F. Davis static const struct regmap_range tps65086_yes_ranges[] = {
23b45b719eSAndrew F. Davis regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
24b45b719eSAndrew F. Davis regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
25b45b719eSAndrew F. Davis regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
26b45b719eSAndrew F. Davis regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
27b45b719eSAndrew F. Davis };
28b45b719eSAndrew F. Davis
29b45b719eSAndrew F. Davis static const struct regmap_access_table tps65086_volatile_table = {
30b45b719eSAndrew F. Davis .yes_ranges = tps65086_yes_ranges,
31b45b719eSAndrew F. Davis .n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
32b45b719eSAndrew F. Davis };
33b45b719eSAndrew F. Davis
34b45b719eSAndrew F. Davis static const struct regmap_config tps65086_regmap_config = {
35b45b719eSAndrew F. Davis .reg_bits = 8,
36b45b719eSAndrew F. Davis .val_bits = 8,
37b45b719eSAndrew F. Davis .cache_type = REGCACHE_RBTREE,
38b45b719eSAndrew F. Davis .volatile_table = &tps65086_volatile_table,
39b45b719eSAndrew F. Davis };
40b45b719eSAndrew F. Davis
41b45b719eSAndrew F. Davis static const struct regmap_irq tps65086_irqs[] = {
42b45b719eSAndrew F. Davis REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
43b45b719eSAndrew F. Davis REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
44b45b719eSAndrew F. Davis REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
45b45b719eSAndrew F. Davis };
46b45b719eSAndrew F. Davis
47b45b719eSAndrew F. Davis static struct regmap_irq_chip tps65086_irq_chip = {
48b45b719eSAndrew F. Davis .name = "tps65086",
49b45b719eSAndrew F. Davis .status_base = TPS65086_IRQ,
50b45b719eSAndrew F. Davis .mask_base = TPS65086_IRQ_MASK,
51b45b719eSAndrew F. Davis .ack_base = TPS65086_IRQ,
52b45b719eSAndrew F. Davis .init_ack_masked = true,
53b45b719eSAndrew F. Davis .num_regs = 1,
54b45b719eSAndrew F. Davis .irqs = tps65086_irqs,
55b45b719eSAndrew F. Davis .num_irqs = ARRAY_SIZE(tps65086_irqs),
56b45b719eSAndrew F. Davis };
57b45b719eSAndrew F. Davis
58b45b719eSAndrew F. Davis static const struct of_device_id tps65086_of_match_table[] = {
59b45b719eSAndrew F. Davis { .compatible = "ti,tps65086", },
60b45b719eSAndrew F. Davis { /* sentinel */ }
61b45b719eSAndrew F. Davis };
62b45b719eSAndrew F. Davis MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
63b45b719eSAndrew F. Davis
tps65086_probe(struct i2c_client * client)641f662faaSUwe Kleine-König static int tps65086_probe(struct i2c_client *client)
65b45b719eSAndrew F. Davis {
66b45b719eSAndrew F. Davis struct tps65086 *tps;
67b45b719eSAndrew F. Davis unsigned int version;
68b45b719eSAndrew F. Davis int ret;
69b45b719eSAndrew F. Davis
70b45b719eSAndrew F. Davis tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
71b45b719eSAndrew F. Davis if (!tps)
72b45b719eSAndrew F. Davis return -ENOMEM;
73b45b719eSAndrew F. Davis
74b45b719eSAndrew F. Davis i2c_set_clientdata(client, tps);
75b45b719eSAndrew F. Davis tps->dev = &client->dev;
76b45b719eSAndrew F. Davis tps->irq = client->irq;
77b45b719eSAndrew F. Davis
78b45b719eSAndrew F. Davis tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
79b45b719eSAndrew F. Davis if (IS_ERR(tps->regmap)) {
80b45b719eSAndrew F. Davis dev_err(tps->dev, "Failed to initialize register map\n");
81b45b719eSAndrew F. Davis return PTR_ERR(tps->regmap);
82b45b719eSAndrew F. Davis }
83b45b719eSAndrew F. Davis
84*c0146735SAndre Werner /* Store device ID to load regulator configuration that fit to IC variant */
85*c0146735SAndre Werner ret = regmap_read(tps->regmap, TPS65086_DEVICEID1, &tps->chip_id);
86b45b719eSAndrew F. Davis if (ret) {
87*c0146735SAndre Werner dev_err(tps->dev, "Failed to read revision register 1\n");
88*c0146735SAndre Werner return ret;
89*c0146735SAndre Werner }
90*c0146735SAndre Werner
91*c0146735SAndre Werner ret = regmap_read(tps->regmap, TPS65086_DEVICEID2, &version);
92*c0146735SAndre Werner if (ret) {
93*c0146735SAndre Werner dev_err(tps->dev, "Failed to read revision register 2\n");
94b45b719eSAndrew F. Davis return ret;
95b45b719eSAndrew F. Davis }
96b45b719eSAndrew F. Davis
97b45b719eSAndrew F. Davis dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
98*c0146735SAndre Werner (version & TPS65086_DEVICEID2_PART_MASK),
99*c0146735SAndre Werner (char)((version & TPS65086_DEVICEID2_OTP_MASK) >> 4) + 'A',
100*c0146735SAndre Werner (version & TPS65086_DEVICEID2_REV_MASK) >> 6);
101b45b719eSAndrew F. Davis
102e06f4abbSEmil Renner Berthing if (tps->irq > 0) {
103b45b719eSAndrew F. Davis ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
104b45b719eSAndrew F. Davis &tps65086_irq_chip, &tps->irq_data);
105b45b719eSAndrew F. Davis if (ret) {
106b45b719eSAndrew F. Davis dev_err(tps->dev, "Failed to register IRQ chip\n");
107b45b719eSAndrew F. Davis return ret;
108b45b719eSAndrew F. Davis }
109e06f4abbSEmil Renner Berthing }
110b45b719eSAndrew F. Davis
111b45b719eSAndrew F. Davis ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
112b45b719eSAndrew F. Davis ARRAY_SIZE(tps65086_cells), NULL, 0,
113b45b719eSAndrew F. Davis regmap_irq_get_domain(tps->irq_data));
114e06f4abbSEmil Renner Berthing if (ret && tps->irq > 0)
115b45b719eSAndrew F. Davis regmap_del_irq_chip(tps->irq, tps->irq_data);
116b45b719eSAndrew F. Davis
117e06f4abbSEmil Renner Berthing return ret;
118b45b719eSAndrew F. Davis }
119b45b719eSAndrew F. Davis
tps65086_remove(struct i2c_client * client)120ed5c2f5fSUwe Kleine-König static void tps65086_remove(struct i2c_client *client)
121b45b719eSAndrew F. Davis {
122b45b719eSAndrew F. Davis struct tps65086 *tps = i2c_get_clientdata(client);
123b45b719eSAndrew F. Davis
124e06f4abbSEmil Renner Berthing if (tps->irq > 0)
125b45b719eSAndrew F. Davis regmap_del_irq_chip(tps->irq, tps->irq_data);
126b45b719eSAndrew F. Davis }
127b45b719eSAndrew F. Davis
128b45b719eSAndrew F. Davis static const struct i2c_device_id tps65086_id_table[] = {
129b45b719eSAndrew F. Davis { "tps65086", 0 },
130b45b719eSAndrew F. Davis { /* sentinel */ }
131b45b719eSAndrew F. Davis };
132b45b719eSAndrew F. Davis MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
133b45b719eSAndrew F. Davis
134b45b719eSAndrew F. Davis static struct i2c_driver tps65086_driver = {
135b45b719eSAndrew F. Davis .driver = {
136b45b719eSAndrew F. Davis .name = "tps65086",
137b45b719eSAndrew F. Davis .of_match_table = tps65086_of_match_table,
138b45b719eSAndrew F. Davis },
1399816d859SUwe Kleine-König .probe = tps65086_probe,
140b45b719eSAndrew F. Davis .remove = tps65086_remove,
141b45b719eSAndrew F. Davis .id_table = tps65086_id_table,
142b45b719eSAndrew F. Davis };
143b45b719eSAndrew F. Davis module_i2c_driver(tps65086_driver);
144b45b719eSAndrew F. Davis
145b45b719eSAndrew F. Davis MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
146b45b719eSAndrew F. Davis MODULE_DESCRIPTION("TPS65086 PMIC Driver");
147b45b719eSAndrew F. Davis MODULE_LICENSE("GPL v2");
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