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19#include <linux/interrupt.h>
20#include <linux/irq.h>
21#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/mutex.h>
24#include <linux/slab.h>
25#include <linux/i2c.h>
26#include <linux/mfd/core.h>
27#include <linux/mfd/tps65090.h>
28#include <linux/of.h>
29#include <linux/of_device.h>
30#include <linux/err.h>
31
32#define NUM_INT_REG 2
33#define TOTAL_NUM_REG 0x18
34
35
36#define TPS65090_INT_STS 0x0
37#define TPS65090_INT_STS2 0x1
38
39
40#define TPS65090_INT_MSK 0x2
41#define TPS65090_INT_MSK2 0x3
42
43#define TPS65090_INT1_MASK_VAC_STATUS_CHANGE 1
44#define TPS65090_INT1_MASK_VSYS_STATUS_CHANGE 2
45#define TPS65090_INT1_MASK_BAT_STATUS_CHANGE 3
46#define TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE 4
47#define TPS65090_INT1_MASK_CHARGING_COMPLETE 5
48#define TPS65090_INT1_MASK_OVERLOAD_DCDC1 6
49#define TPS65090_INT1_MASK_OVERLOAD_DCDC2 7
50#define TPS65090_INT2_MASK_OVERLOAD_DCDC3 0
51#define TPS65090_INT2_MASK_OVERLOAD_FET1 1
52#define TPS65090_INT2_MASK_OVERLOAD_FET2 2
53#define TPS65090_INT2_MASK_OVERLOAD_FET3 3
54#define TPS65090_INT2_MASK_OVERLOAD_FET4 4
55#define TPS65090_INT2_MASK_OVERLOAD_FET5 5
56#define TPS65090_INT2_MASK_OVERLOAD_FET6 6
57#define TPS65090_INT2_MASK_OVERLOAD_FET7 7
58
59static struct resource charger_resources[] = {
60 {
61 .start = TPS65090_IRQ_VAC_STATUS_CHANGE,
62 .end = TPS65090_IRQ_VAC_STATUS_CHANGE,
63 .flags = IORESOURCE_IRQ,
64 }
65};
66
67static struct mfd_cell tps65090s[] = {
68 {
69 .name = "tps65090-pmic",
70 },
71 {
72 .name = "tps65090-charger",
73 .num_resources = ARRAY_SIZE(charger_resources),
74 .resources = &charger_resources[0],
75 .of_compatible = "ti,tps65090-charger",
76 },
77};
78
79static const struct regmap_irq tps65090_irqs[] = {
80
81 [TPS65090_IRQ_VAC_STATUS_CHANGE] = {
82 .mask = TPS65090_INT1_MASK_VAC_STATUS_CHANGE,
83 },
84 [TPS65090_IRQ_VSYS_STATUS_CHANGE] = {
85 .mask = TPS65090_INT1_MASK_VSYS_STATUS_CHANGE,
86 },
87 [TPS65090_IRQ_BAT_STATUS_CHANGE] = {
88 .mask = TPS65090_INT1_MASK_BAT_STATUS_CHANGE,
89 },
90 [TPS65090_IRQ_CHARGING_STATUS_CHANGE] = {
91 .mask = TPS65090_INT1_MASK_CHARGING_STATUS_CHANGE,
92 },
93 [TPS65090_IRQ_CHARGING_COMPLETE] = {
94 .mask = TPS65090_INT1_MASK_CHARGING_COMPLETE,
95 },
96 [TPS65090_IRQ_OVERLOAD_DCDC1] = {
97 .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC1,
98 },
99 [TPS65090_IRQ_OVERLOAD_DCDC2] = {
100 .mask = TPS65090_INT1_MASK_OVERLOAD_DCDC2,
101 },
102
103 [TPS65090_IRQ_OVERLOAD_DCDC3] = {
104 .reg_offset = 1,
105 .mask = TPS65090_INT2_MASK_OVERLOAD_DCDC3,
106 },
107 [TPS65090_IRQ_OVERLOAD_FET1] = {
108 .reg_offset = 1,
109 .mask = TPS65090_INT2_MASK_OVERLOAD_FET1,
110 },
111 [TPS65090_IRQ_OVERLOAD_FET2] = {
112 .reg_offset = 1,
113 .mask = TPS65090_INT2_MASK_OVERLOAD_FET2,
114 },
115 [TPS65090_IRQ_OVERLOAD_FET3] = {
116 .reg_offset = 1,
117 .mask = TPS65090_INT2_MASK_OVERLOAD_FET3,
118 },
119 [TPS65090_IRQ_OVERLOAD_FET4] = {
120 .reg_offset = 1,
121 .mask = TPS65090_INT2_MASK_OVERLOAD_FET4,
122 },
123 [TPS65090_IRQ_OVERLOAD_FET5] = {
124 .reg_offset = 1,
125 .mask = TPS65090_INT2_MASK_OVERLOAD_FET5,
126 },
127 [TPS65090_IRQ_OVERLOAD_FET6] = {
128 .reg_offset = 1,
129 .mask = TPS65090_INT2_MASK_OVERLOAD_FET6,
130 },
131 [TPS65090_IRQ_OVERLOAD_FET7] = {
132 .reg_offset = 1,
133 .mask = TPS65090_INT2_MASK_OVERLOAD_FET7,
134 },
135};
136
137static struct regmap_irq_chip tps65090_irq_chip = {
138 .name = "tps65090",
139 .irqs = tps65090_irqs,
140 .num_irqs = ARRAY_SIZE(tps65090_irqs),
141 .num_regs = NUM_INT_REG,
142 .status_base = TPS65090_INT_STS,
143 .mask_base = TPS65090_INT_MSK,
144 .mask_invert = true,
145};
146
147static bool is_volatile_reg(struct device *dev, unsigned int reg)
148{
149 if ((reg == TPS65090_INT_STS) || (reg == TPS65090_INT_STS2))
150 return true;
151 else
152 return false;
153}
154
155static const struct regmap_config tps65090_regmap_config = {
156 .reg_bits = 8,
157 .val_bits = 8,
158 .max_register = TOTAL_NUM_REG,
159 .num_reg_defaults_raw = TOTAL_NUM_REG,
160 .cache_type = REGCACHE_RBTREE,
161 .volatile_reg = is_volatile_reg,
162};
163
164#ifdef CONFIG_OF
165static const struct of_device_id tps65090_of_match[] = {
166 { .compatible = "ti,tps65090",},
167 {},
168};
169MODULE_DEVICE_TABLE(of, tps65090_of_match);
170#endif
171
172static int tps65090_i2c_probe(struct i2c_client *client,
173 const struct i2c_device_id *id)
174{
175 struct tps65090_platform_data *pdata = client->dev.platform_data;
176 int irq_base = 0;
177 struct tps65090 *tps65090;
178 int ret;
179
180 if (!pdata && !client->dev.of_node) {
181 dev_err(&client->dev,
182 "tps65090 requires platform data or of_node\n");
183 return -EINVAL;
184 }
185
186 if (pdata)
187 irq_base = pdata->irq_base;
188
189 tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
190 if (!tps65090) {
191 dev_err(&client->dev, "mem alloc for tps65090 failed\n");
192 return -ENOMEM;
193 }
194
195 tps65090->dev = &client->dev;
196 i2c_set_clientdata(client, tps65090);
197
198 tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config);
199 if (IS_ERR(tps65090->rmap)) {
200 ret = PTR_ERR(tps65090->rmap);
201 dev_err(&client->dev, "regmap_init failed with err: %d\n", ret);
202 return ret;
203 }
204
205 if (client->irq) {
206 ret = regmap_add_irq_chip(tps65090->rmap, client->irq,
207 IRQF_ONESHOT | IRQF_TRIGGER_LOW, irq_base,
208 &tps65090_irq_chip, &tps65090->irq_data);
209 if (ret) {
210 dev_err(&client->dev,
211 "IRQ init failed with err: %d\n", ret);
212 return ret;
213 }
214 }
215
216 ret = mfd_add_devices(tps65090->dev, -1, tps65090s,
217 ARRAY_SIZE(tps65090s), NULL,
218 0, regmap_irq_get_domain(tps65090->irq_data));
219 if (ret) {
220 dev_err(&client->dev, "add mfd devices failed with err: %d\n",
221 ret);
222 goto err_irq_exit;
223 }
224
225 return 0;
226
227err_irq_exit:
228 if (client->irq)
229 regmap_del_irq_chip(client->irq, tps65090->irq_data);
230 return ret;
231}
232
233static int tps65090_i2c_remove(struct i2c_client *client)
234{
235 struct tps65090 *tps65090 = i2c_get_clientdata(client);
236
237 mfd_remove_devices(tps65090->dev);
238 if (client->irq)
239 regmap_del_irq_chip(client->irq, tps65090->irq_data);
240
241 return 0;
242}
243
244static const struct i2c_device_id tps65090_id_table[] = {
245 { "tps65090", 0 },
246 { },
247};
248MODULE_DEVICE_TABLE(i2c, tps65090_id_table);
249
250static struct i2c_driver tps65090_driver = {
251 .driver = {
252 .name = "tps65090",
253 .owner = THIS_MODULE,
254 .of_match_table = of_match_ptr(tps65090_of_match),
255 },
256 .probe = tps65090_i2c_probe,
257 .remove = tps65090_i2c_remove,
258 .id_table = tps65090_id_table,
259};
260
261static int __init tps65090_init(void)
262{
263 return i2c_add_driver(&tps65090_driver);
264}
265subsys_initcall(tps65090_init);
266
267static void __exit tps65090_exit(void)
268{
269 i2c_del_driver(&tps65090_driver);
270}
271module_exit(tps65090_exit);
272
273MODULE_DESCRIPTION("TPS65090 core driver");
274MODULE_AUTHOR("Venu Byravarasu <vbyravarasu@nvidia.com>");
275MODULE_LICENSE("GPL v2");
276
