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9952f691 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
3c33be06 VB |
2 | /* |
3 | * Core driver for TI TPS65090 PMIC family | |
4 | * | |
5 | * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. | |
26fce5e0 PG |
6 | * |
7 | * Author: Venu Byravarasu <vbyravarasu@nvidia.com> | |
3c33be06 VB |
8 | */ |
9 | ||
10 | #include <linux/interrupt.h> | |
11 | #include <linux/irq.h> | |
12 | #include <linux/kernel.h> | |
26fce5e0 | 13 | #include <linux/init.h> |
3c33be06 VB |
14 | #include <linux/mutex.h> |
15 | #include <linux/slab.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/mfd/core.h> | |
18 | #include <linux/mfd/tps65090.h> | |
40719314 LD |
19 | #include <linux/of.h> |
20 | #include <linux/of_device.h> | |
3c33be06 VB |
21 | #include <linux/err.h> |
22 | ||
23 | #define NUM_INT_REG 2 | |
3c33be06 | 24 | |
759f2598 LD |
25 | #define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1 |
26 | #define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2 | |
27 | #define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3 | |
28 | #define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4 | |
29 | #define TPS65090_INT1_MASK_CHARGING_COMPLETE 5 | |
30 | #define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6 | |
31 | #define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7 | |
32 | #define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0 | |
33 | #define TPS65090_INT2_MASK_OVERLOAD_FET1 1 | |
34 | #define TPS65090_INT2_MASK_OVERLOAD_FET2 2 | |
35 | #define TPS65090_INT2_MASK_OVERLOAD_FET3 3 | |
36 | #define TPS65090_INT2_MASK_OVERLOAD_FET4 4 | |
37 | #define TPS65090_INT2_MASK_OVERLOAD_FET5 5 | |
38 | #define TPS65090_INT2_MASK_OVERLOAD_FET6 6 | |
39 | #define TPS65090_INT2_MASK_OVERLOAD_FET7 7 | |
3c33be06 | 40 | |
36c772e3 RK |
41 | static struct resource charger_resources[] = { |
42 | { | |
43 | .start = TPS65090_IRQ_VAC_STATUS_CHANGE, | |
44 | .end = TPS65090_IRQ_VAC_STATUS_CHANGE, | |
45 | .flags = IORESOURCE_IRQ, | |
46 | } | |
47 | }; | |
48 | ||
7d811771 DA |
49 | enum tps65090_cells { |
50 | PMIC = 0, | |
51 | CHARGER = 1, | |
52 | }; | |
53 | ||
54 | static struct mfd_cell tps65090s[] = { | |
55 | [PMIC] = { | |
b7e53786 | 56 | .name = "tps65090-pmic", |
3c33be06 | 57 | }, |
7d811771 | 58 | [CHARGER] = { |
e2e8ffc9 | 59 | .name = "tps65090-charger", |
36c772e3 RK |
60 | .num_resources = ARRAY_SIZE(charger_resources), |
61 | .resources = &charger_resources[0], | |
b50cf35b | 62 | .of_compatible = "ti,tps65090-charger", |
3c33be06 VB |
63 | }, |
64 | }; | |
65 | ||
759f2598 LD |
66 | static const struct regmap_irq tps65090_irqs[] = { |
67 | /* INT1 IRQs*/ | |
68 | [TPS65090_IRQ_VAC_STATUS_CHANGE] = { | |
12849b63 | 69 | .mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE, |
759f2598 LD |
70 | }, |
71 | [TPS65090_IRQ_VSYS_STATUS_CHANGE] = { | |
12849b63 | 72 | .mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE, |
759f2598 LD |
73 | }, |
74 | [TPS65090_IRQ_BAT_STATUS_CHANGE] = { | |
12849b63 | 75 | .mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE, |
759f2598 LD |
76 | }, |
77 | [TPS65090_IRQ_CHARGING_STATUS_CHANGE] = { | |
12849b63 | 78 | .mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE, |
759f2598 LD |
79 | }, |
80 | [TPS65090_IRQ_CHARGING_COMPLETE] = { | |
12849b63 | 81 | .mask = TPS65090_INT1_MASK_CHARGING_COMPLETE, |
759f2598 LD |
82 | }, |
83 | [TPS65090_IRQ_OVERLOAD_DCDC1] = { | |
12849b63 | 84 | .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1, |
759f2598 LD |
85 | }, |
86 | [TPS65090_IRQ_OVERLOAD_DCDC2] = { | |
12849b63 | 87 | .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2, |
759f2598 LD |
88 | }, |
89 | /* INT2 IRQs*/ | |
90 | [TPS65090_IRQ_OVERLOAD_DCDC3] = { | |
12849b63 LJ |
91 | .reg_offset = 1, |
92 | .mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3, | |
759f2598 LD |
93 | }, |
94 | [TPS65090_IRQ_OVERLOAD_FET1] = { | |
12849b63 LJ |
95 | .reg_offset = 1, |
96 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET1, | |
759f2598 LD |
97 | }, |
98 | [TPS65090_IRQ_OVERLOAD_FET2] = { | |
12849b63 LJ |
99 | .reg_offset = 1, |
100 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET2, | |
759f2598 LD |
101 | }, |
102 | [TPS65090_IRQ_OVERLOAD_FET3] = { | |
12849b63 LJ |
103 | .reg_offset = 1, |
104 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET3, | |
759f2598 LD |
105 | }, |
106 | [TPS65090_IRQ_OVERLOAD_FET4] = { | |
12849b63 LJ |
107 | .reg_offset = 1, |
108 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET4, | |
759f2598 LD |
109 | }, |
110 | [TPS65090_IRQ_OVERLOAD_FET5] = { | |
12849b63 LJ |
111 | .reg_offset = 1, |
112 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET5, | |
759f2598 LD |
113 | }, |
114 | [TPS65090_IRQ_OVERLOAD_FET6] = { | |
12849b63 LJ |
115 | .reg_offset = 1, |
116 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET6, | |
759f2598 LD |
117 | }, |
118 | [TPS65090_IRQ_OVERLOAD_FET7] = { | |
12849b63 LJ |
119 | .reg_offset = 1, |
120 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET7, | |
759f2598 LD |
121 | }, |
122 | }; | |
3c33be06 | 123 | |
759f2598 LD |
124 | static struct regmap_irq_chip tps65090_irq_chip = { |
125 | .name = "tps65090", | |
126 | .irqs = tps65090_irqs, | |
127 | .num_irqs = ARRAY_SIZE(tps65090_irqs), | |
128 | .num_regs = NUM_INT_REG, | |
c42ba72e DA |
129 | .status_base = TPS65090_REG_INTR_STS, |
130 | .mask_base = TPS65090_REG_INTR_MASK, | |
759f2598 LD |
131 | .mask_invert = true, |
132 | }; | |
3c33be06 VB |
133 | |
134 | static bool is_volatile_reg(struct device *dev, unsigned int reg) | |
135 | { | |
c42ba72e DA |
136 | /* Nearly all registers have status bits mixed in, except a few */ |
137 | switch (reg) { | |
138 | case TPS65090_REG_INTR_MASK: | |
139 | case TPS65090_REG_INTR_MASK2: | |
140 | case TPS65090_REG_CG_CTRL0: | |
141 | case TPS65090_REG_CG_CTRL1: | |
142 | case TPS65090_REG_CG_CTRL2: | |
143 | case TPS65090_REG_CG_CTRL3: | |
144 | case TPS65090_REG_CG_CTRL4: | |
145 | case TPS65090_REG_CG_CTRL5: | |
3c33be06 | 146 | return false; |
c42ba72e DA |
147 | } |
148 | return true; | |
3c33be06 VB |
149 | } |
150 | ||
151 | static const struct regmap_config tps65090_regmap_config = { | |
152 | .reg_bits = 8, | |
153 | .val_bits = 8, | |
5c148890 MS |
154 | .max_register = TPS65090_MAX_REG, |
155 | .num_reg_defaults_raw = TPS65090_NUM_REGS, | |
3c33be06 VB |
156 | .cache_type = REGCACHE_RBTREE, |
157 | .volatile_reg = is_volatile_reg, | |
158 | }; | |
159 | ||
40719314 LD |
160 | #ifdef CONFIG_OF |
161 | static const struct of_device_id tps65090_of_match[] = { | |
162 | { .compatible = "ti,tps65090",}, | |
163 | {}, | |
164 | }; | |
40719314 LD |
165 | #endif |
166 | ||
f791be49 | 167 | static int tps65090_i2c_probe(struct i2c_client *client, |
12849b63 | 168 | const struct i2c_device_id *id) |
3c33be06 | 169 | { |
334a41ce | 170 | struct tps65090_platform_data *pdata = dev_get_platdata(&client->dev); |
40719314 | 171 | int irq_base = 0; |
3c33be06 VB |
172 | struct tps65090 *tps65090; |
173 | int ret; | |
174 | ||
40719314 LD |
175 | if (!pdata && !client->dev.of_node) { |
176 | dev_err(&client->dev, | |
177 | "tps65090 requires platform data or of_node\n"); | |
3c33be06 VB |
178 | return -EINVAL; |
179 | } | |
180 | ||
40719314 LD |
181 | if (pdata) |
182 | irq_base = pdata->irq_base; | |
183 | ||
e8e6f047 | 184 | tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL); |
8a232f0b | 185 | if (!tps65090) |
3c33be06 VB |
186 | return -ENOMEM; |
187 | ||
3c33be06 VB |
188 | tps65090->dev = &client->dev; |
189 | i2c_set_clientdata(client, tps65090); | |
190 | ||
3863db3e | 191 | tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config); |
3c33be06 | 192 | if (IS_ERR(tps65090->rmap)) { |
b683a0a6 AL |
193 | ret = PTR_ERR(tps65090->rmap); |
194 | dev_err(&client->dev, "regmap_init failed with err: %d\n", ret); | |
759f2598 LD |
195 | return ret; |
196 | } | |
197 | ||
198 | if (client->irq) { | |
199 | ret = regmap_add_irq_chip(tps65090->rmap, client->irq, | |
12849b63 LJ |
200 | IRQF_ONESHOT | IRQF_TRIGGER_LOW, irq_base, |
201 | &tps65090_irq_chip, &tps65090->irq_data); | |
202 | if (ret) { | |
203 | dev_err(&client->dev, | |
204 | "IRQ init failed with err: %d\n", ret); | |
759f2598 LD |
205 | return ret; |
206 | } | |
7d811771 DA |
207 | } else { |
208 | /* Don't tell children they have an IRQ that'll never fire */ | |
209 | tps65090s[CHARGER].num_resources = 0; | |
b683a0a6 | 210 | } |
3c33be06 VB |
211 | |
212 | ret = mfd_add_devices(tps65090->dev, -1, tps65090s, | |
12849b63 LJ |
213 | ARRAY_SIZE(tps65090s), NULL, |
214 | 0, regmap_irq_get_domain(tps65090->irq_data)); | |
3c33be06 VB |
215 | if (ret) { |
216 | dev_err(&client->dev, "add mfd devices failed with err: %d\n", | |
217 | ret); | |
1d88f7a0 | 218 | goto err_irq_exit; |
3c33be06 VB |
219 | } |
220 | ||
221 | return 0; | |
222 | ||
3c33be06 VB |
223 | err_irq_exit: |
224 | if (client->irq) | |
759f2598 | 225 | regmap_del_irq_chip(client->irq, tps65090->irq_data); |
3c33be06 VB |
226 | return ret; |
227 | } | |
228 | ||
3c33be06 | 229 | |
3c33be06 VB |
230 | static const struct i2c_device_id tps65090_id_table[] = { |
231 | { "tps65090", 0 }, | |
232 | { }, | |
233 | }; | |
3c33be06 VB |
234 | |
235 | static struct i2c_driver tps65090_driver = { | |
236 | .driver = { | |
237 | .name = "tps65090", | |
26fce5e0 | 238 | .suppress_bind_attrs = true, |
40719314 | 239 | .of_match_table = of_match_ptr(tps65090_of_match), |
3c33be06 VB |
240 | }, |
241 | .probe = tps65090_i2c_probe, | |
3c33be06 VB |
242 | .id_table = tps65090_id_table, |
243 | }; | |
244 | ||
245 | static int __init tps65090_init(void) | |
246 | { | |
247 | return i2c_add_driver(&tps65090_driver); | |
248 | } | |
249 | subsys_initcall(tps65090_init); |