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3c33be06 VB |
1 | /* |
2 | * Core driver for TI TPS65090 PMIC family | |
3 | * | |
4 | * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. | |
26fce5e0 PG |
5 | * |
6 | * Author: Venu Byravarasu <vbyravarasu@nvidia.com> | |
7 | * | |
3c33be06 VB |
8 | * This program is free software; you can redistribute it and/or modify it |
9 | * under the terms and conditions of the GNU General Public License, | |
10 | * version 2, as published by the Free Software Foundation. | |
11 | ||
12 | * This program is distributed in the hope it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | ||
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
21 | #include <linux/interrupt.h> | |
22 | #include <linux/irq.h> | |
23 | #include <linux/kernel.h> | |
26fce5e0 | 24 | #include <linux/init.h> |
3c33be06 VB |
25 | #include <linux/mutex.h> |
26 | #include <linux/slab.h> | |
27 | #include <linux/i2c.h> | |
28 | #include <linux/mfd/core.h> | |
29 | #include <linux/mfd/tps65090.h> | |
40719314 LD |
30 | #include <linux/of.h> |
31 | #include <linux/of_device.h> | |
3c33be06 VB |
32 | #include <linux/err.h> |
33 | ||
34 | #define NUM_INT_REG 2 | |
3c33be06 | 35 | |
759f2598 LD |
36 | #define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1 |
37 | #define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2 | |
38 | #define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3 | |
39 | #define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4 | |
40 | #define TPS65090_INT1_MASK_CHARGING_COMPLETE 5 | |
41 | #define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6 | |
42 | #define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7 | |
43 | #define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0 | |
44 | #define TPS65090_INT2_MASK_OVERLOAD_FET1 1 | |
45 | #define TPS65090_INT2_MASK_OVERLOAD_FET2 2 | |
46 | #define TPS65090_INT2_MASK_OVERLOAD_FET3 3 | |
47 | #define TPS65090_INT2_MASK_OVERLOAD_FET4 4 | |
48 | #define TPS65090_INT2_MASK_OVERLOAD_FET5 5 | |
49 | #define TPS65090_INT2_MASK_OVERLOAD_FET6 6 | |
50 | #define TPS65090_INT2_MASK_OVERLOAD_FET7 7 | |
3c33be06 | 51 | |
36c772e3 RK |
52 | static struct resource charger_resources[] = { |
53 | { | |
54 | .start = TPS65090_IRQ_VAC_STATUS_CHANGE, | |
55 | .end = TPS65090_IRQ_VAC_STATUS_CHANGE, | |
56 | .flags = IORESOURCE_IRQ, | |
57 | } | |
58 | }; | |
59 | ||
7d811771 DA |
60 | enum tps65090_cells { |
61 | PMIC = 0, | |
62 | CHARGER = 1, | |
63 | }; | |
64 | ||
65 | static struct mfd_cell tps65090s[] = { | |
66 | [PMIC] = { | |
b7e53786 | 67 | .name = "tps65090-pmic", |
3c33be06 | 68 | }, |
7d811771 | 69 | [CHARGER] = { |
e2e8ffc9 | 70 | .name = "tps65090-charger", |
36c772e3 RK |
71 | .num_resources = ARRAY_SIZE(charger_resources), |
72 | .resources = &charger_resources[0], | |
b50cf35b | 73 | .of_compatible = "ti,tps65090-charger", |
3c33be06 VB |
74 | }, |
75 | }; | |
76 | ||
759f2598 LD |
77 | static const struct regmap_irq tps65090_irqs[] = { |
78 | /* INT1 IRQs*/ | |
79 | [TPS65090_IRQ_VAC_STATUS_CHANGE] = { | |
12849b63 | 80 | .mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE, |
759f2598 LD |
81 | }, |
82 | [TPS65090_IRQ_VSYS_STATUS_CHANGE] = { | |
12849b63 | 83 | .mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE, |
759f2598 LD |
84 | }, |
85 | [TPS65090_IRQ_BAT_STATUS_CHANGE] = { | |
12849b63 | 86 | .mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE, |
759f2598 LD |
87 | }, |
88 | [TPS65090_IRQ_CHARGING_STATUS_CHANGE] = { | |
12849b63 | 89 | .mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE, |
759f2598 LD |
90 | }, |
91 | [TPS65090_IRQ_CHARGING_COMPLETE] = { | |
12849b63 | 92 | .mask = TPS65090_INT1_MASK_CHARGING_COMPLETE, |
759f2598 LD |
93 | }, |
94 | [TPS65090_IRQ_OVERLOAD_DCDC1] = { | |
12849b63 | 95 | .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1, |
759f2598 LD |
96 | }, |
97 | [TPS65090_IRQ_OVERLOAD_DCDC2] = { | |
12849b63 | 98 | .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2, |
759f2598 LD |
99 | }, |
100 | /* INT2 IRQs*/ | |
101 | [TPS65090_IRQ_OVERLOAD_DCDC3] = { | |
12849b63 LJ |
102 | .reg_offset = 1, |
103 | .mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3, | |
759f2598 LD |
104 | }, |
105 | [TPS65090_IRQ_OVERLOAD_FET1] = { | |
12849b63 LJ |
106 | .reg_offset = 1, |
107 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET1, | |
759f2598 LD |
108 | }, |
109 | [TPS65090_IRQ_OVERLOAD_FET2] = { | |
12849b63 LJ |
110 | .reg_offset = 1, |
111 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET2, | |
759f2598 LD |
112 | }, |
113 | [TPS65090_IRQ_OVERLOAD_FET3] = { | |
12849b63 LJ |
114 | .reg_offset = 1, |
115 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET3, | |
759f2598 LD |
116 | }, |
117 | [TPS65090_IRQ_OVERLOAD_FET4] = { | |
12849b63 LJ |
118 | .reg_offset = 1, |
119 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET4, | |
759f2598 LD |
120 | }, |
121 | [TPS65090_IRQ_OVERLOAD_FET5] = { | |
12849b63 LJ |
122 | .reg_offset = 1, |
123 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET5, | |
759f2598 LD |
124 | }, |
125 | [TPS65090_IRQ_OVERLOAD_FET6] = { | |
12849b63 LJ |
126 | .reg_offset = 1, |
127 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET6, | |
759f2598 LD |
128 | }, |
129 | [TPS65090_IRQ_OVERLOAD_FET7] = { | |
12849b63 LJ |
130 | .reg_offset = 1, |
131 | .mask = TPS65090_INT2_MASK_OVERLOAD_FET7, | |
759f2598 LD |
132 | }, |
133 | }; | |
3c33be06 | 134 | |
759f2598 LD |
135 | static struct regmap_irq_chip tps65090_irq_chip = { |
136 | .name = "tps65090", | |
137 | .irqs = tps65090_irqs, | |
138 | .num_irqs = ARRAY_SIZE(tps65090_irqs), | |
139 | .num_regs = NUM_INT_REG, | |
c42ba72e DA |
140 | .status_base = TPS65090_REG_INTR_STS, |
141 | .mask_base = TPS65090_REG_INTR_MASK, | |
759f2598 LD |
142 | .mask_invert = true, |
143 | }; | |
3c33be06 VB |
144 | |
145 | static bool is_volatile_reg(struct device *dev, unsigned int reg) | |
146 | { | |
c42ba72e DA |
147 | /* Nearly all registers have status bits mixed in, except a few */ |
148 | switch (reg) { | |
149 | case TPS65090_REG_INTR_MASK: | |
150 | case TPS65090_REG_INTR_MASK2: | |
151 | case TPS65090_REG_CG_CTRL0: | |
152 | case TPS65090_REG_CG_CTRL1: | |
153 | case TPS65090_REG_CG_CTRL2: | |
154 | case TPS65090_REG_CG_CTRL3: | |
155 | case TPS65090_REG_CG_CTRL4: | |
156 | case TPS65090_REG_CG_CTRL5: | |
3c33be06 | 157 | return false; |
c42ba72e DA |
158 | } |
159 | return true; | |
3c33be06 VB |
160 | } |
161 | ||
162 | static const struct regmap_config tps65090_regmap_config = { | |
163 | .reg_bits = 8, | |
164 | .val_bits = 8, | |
5c148890 MS |
165 | .max_register = TPS65090_MAX_REG, |
166 | .num_reg_defaults_raw = TPS65090_NUM_REGS, | |
3c33be06 VB |
167 | .cache_type = REGCACHE_RBTREE, |
168 | .volatile_reg = is_volatile_reg, | |
169 | }; | |
170 | ||
40719314 LD |
171 | #ifdef CONFIG_OF |
172 | static const struct of_device_id tps65090_of_match[] = { | |
173 | { .compatible = "ti,tps65090",}, | |
174 | {}, | |
175 | }; | |
40719314 LD |
176 | #endif |
177 | ||
f791be49 | 178 | static int tps65090_i2c_probe(struct i2c_client *client, |
12849b63 | 179 | const struct i2c_device_id *id) |
3c33be06 | 180 | { |
334a41ce | 181 | struct tps65090_platform_data *pdata = dev_get_platdata(&client->dev); |
40719314 | 182 | int irq_base = 0; |
3c33be06 VB |
183 | struct tps65090 *tps65090; |
184 | int ret; | |
185 | ||
40719314 LD |
186 | if (!pdata && !client->dev.of_node) { |
187 | dev_err(&client->dev, | |
188 | "tps65090 requires platform data or of_node\n"); | |
3c33be06 VB |
189 | return -EINVAL; |
190 | } | |
191 | ||
40719314 LD |
192 | if (pdata) |
193 | irq_base = pdata->irq_base; | |
194 | ||
e8e6f047 | 195 | tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL); |
8a232f0b | 196 | if (!tps65090) |
3c33be06 VB |
197 | return -ENOMEM; |
198 | ||
3c33be06 VB |
199 | tps65090->dev = &client->dev; |
200 | i2c_set_clientdata(client, tps65090); | |
201 | ||
3863db3e | 202 | tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config); |
3c33be06 | 203 | if (IS_ERR(tps65090->rmap)) { |
b683a0a6 AL |
204 | ret = PTR_ERR(tps65090->rmap); |
205 | dev_err(&client->dev, "regmap_init failed with err: %d\n", ret); | |
759f2598 LD |
206 | return ret; |
207 | } | |
208 | ||
209 | if (client->irq) { | |
210 | ret = regmap_add_irq_chip(tps65090->rmap, client->irq, | |
12849b63 LJ |
211 | IRQF_ONESHOT | IRQF_TRIGGER_LOW, irq_base, |
212 | &tps65090_irq_chip, &tps65090->irq_data); | |
213 | if (ret) { | |
214 | dev_err(&client->dev, | |
215 | "IRQ init failed with err: %d\n", ret); | |
759f2598 LD |
216 | return ret; |
217 | } | |
7d811771 DA |
218 | } else { |
219 | /* Don't tell children they have an IRQ that'll never fire */ | |
220 | tps65090s[CHARGER].num_resources = 0; | |
b683a0a6 | 221 | } |
3c33be06 VB |
222 | |
223 | ret = mfd_add_devices(tps65090->dev, -1, tps65090s, | |
12849b63 LJ |
224 | ARRAY_SIZE(tps65090s), NULL, |
225 | 0, regmap_irq_get_domain(tps65090->irq_data)); | |
3c33be06 VB |
226 | if (ret) { |
227 | dev_err(&client->dev, "add mfd devices failed with err: %d\n", | |
228 | ret); | |
1d88f7a0 | 229 | goto err_irq_exit; |
3c33be06 VB |
230 | } |
231 | ||
232 | return 0; | |
233 | ||
3c33be06 VB |
234 | err_irq_exit: |
235 | if (client->irq) | |
759f2598 | 236 | regmap_del_irq_chip(client->irq, tps65090->irq_data); |
3c33be06 VB |
237 | return ret; |
238 | } | |
239 | ||
3c33be06 | 240 | |
3c33be06 VB |
241 | static const struct i2c_device_id tps65090_id_table[] = { |
242 | { "tps65090", 0 }, | |
243 | { }, | |
244 | }; | |
3c33be06 VB |
245 | |
246 | static struct i2c_driver tps65090_driver = { | |
247 | .driver = { | |
248 | .name = "tps65090", | |
26fce5e0 | 249 | .suppress_bind_attrs = true, |
40719314 | 250 | .of_match_table = of_match_ptr(tps65090_of_match), |
3c33be06 VB |
251 | }, |
252 | .probe = tps65090_i2c_probe, | |
3c33be06 VB |
253 | .id_table = tps65090_id_table, |
254 | }; | |
255 | ||
256 | static int __init tps65090_init(void) | |
257 | { | |
258 | return i2c_add_driver(&tps65090_driver); | |
259 | } | |
260 | subsys_initcall(tps65090_init); |