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1/*
2 * tps65217.c
3 *
4 * TPS65217 chip family multi-function driver
5 *
6 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation version 2.
11 *
12 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
13 * kind, whether express or implied; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 */
17
18#include <linux/device.h>
19#include <linux/err.h>
20#include <linux/init.h>
21#include <linux/interrupt.h>
22#include <linux/i2c.h>
23#include <linux/irq.h>
24#include <linux/irqdomain.h>
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/of.h>
28#include <linux/of_device.h>
29#include <linux/platform_device.h>
30#include <linux/regmap.h>
31#include <linux/slab.h>
32
33#include <linux/mfd/core.h>
34#include <linux/mfd/tps65217.h>
35
36static struct resource charger_resources[] = {
37 DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_AC, "AC"),
38 DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_USB, "USB"),
39};
40
41static struct resource pb_resources[] = {
42 DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_PB, "PB"),
43};
44
45static void tps65217_irq_lock(struct irq_data *data)
46{
47 struct tps65217 *tps = irq_data_get_irq_chip_data(data);
48
49 mutex_lock(&tps->irq_lock);
50}
51
52static void tps65217_irq_sync_unlock(struct irq_data *data)
53{
54 struct tps65217 *tps = irq_data_get_irq_chip_data(data);
55 int ret;
56
57 ret = tps65217_set_bits(tps, TPS65217_REG_INT, TPS65217_INT_MASK,
58 tps->irq_mask, TPS65217_PROTECT_NONE);
59 if (ret != 0)
60 dev_err(tps->dev, "Failed to sync IRQ masks\n");
61
62 mutex_unlock(&tps->irq_lock);
63}
64
65static void tps65217_irq_enable(struct irq_data *data)
66{
67 struct tps65217 *tps = irq_data_get_irq_chip_data(data);
68 u8 mask = BIT(data->hwirq) << TPS65217_INT_SHIFT;
69
70 tps->irq_mask &= ~mask;
71}
72
73static void tps65217_irq_disable(struct irq_data *data)
74{
75 struct tps65217 *tps = irq_data_get_irq_chip_data(data);
76 u8 mask = BIT(data->hwirq) << TPS65217_INT_SHIFT;
77
78 tps->irq_mask |= mask;
79}
80
81static struct irq_chip tps65217_irq_chip = {
82 .name = "tps65217",
83 .irq_bus_lock = tps65217_irq_lock,
84 .irq_bus_sync_unlock = tps65217_irq_sync_unlock,
85 .irq_enable = tps65217_irq_enable,
86 .irq_disable = tps65217_irq_disable,
87};
88
89static struct mfd_cell tps65217s[] = {
90 {
91 .name = "tps65217-pmic",
92 .of_compatible = "ti,tps65217-pmic",
93 },
94 {
95 .name = "tps65217-bl",
96 .of_compatible = "ti,tps65217-bl",
97 },
98 {
99 .name = "tps65217-charger",
100 .num_resources = ARRAY_SIZE(charger_resources),
101 .resources = charger_resources,
102 .of_compatible = "ti,tps65217-charger",
103 },
104 {
105 .name = "tps65217-pwrbutton",
106 .num_resources = ARRAY_SIZE(pb_resources),
107 .resources = pb_resources,
108 .of_compatible = "ti,tps65217-pwrbutton",
109 },
110};
111
112static irqreturn_t tps65217_irq_thread(int irq, void *data)
113{
114 struct tps65217 *tps = data;
115 unsigned int status;
116 bool handled = false;
117 int i;
118 int ret;
119
120 ret = tps65217_reg_read(tps, TPS65217_REG_INT, &status);
121 if (ret < 0) {
122 dev_err(tps->dev, "Failed to read IRQ status: %d\n",
123 ret);
124 return IRQ_NONE;
125 }
126
127 for (i = 0; i < TPS65217_NUM_IRQ; i++) {
128 if (status & BIT(i)) {
129 handle_nested_irq(irq_find_mapping(tps->irq_domain, i));
130 handled = true;
131 }
132 }
133
134 if (handled)
135 return IRQ_HANDLED;
136
137 return IRQ_NONE;
138}
139
140static int tps65217_irq_map(struct irq_domain *h, unsigned int virq,
141 irq_hw_number_t hw)
142{
143 struct tps65217 *tps = h->host_data;
144
145 irq_set_chip_data(virq, tps);
146 irq_set_chip_and_handler(virq, &tps65217_irq_chip, handle_edge_irq);
147 irq_set_nested_thread(virq, 1);
148 irq_set_parent(virq, tps->irq);
149 irq_set_noprobe(virq);
150
151 return 0;
152}
153
154static const struct irq_domain_ops tps65217_irq_domain_ops = {
155 .map = tps65217_irq_map,
156};
157
158static int tps65217_irq_init(struct tps65217 *tps, int irq)
159{
160 int ret;
161
162 mutex_init(&tps->irq_lock);
163 tps->irq = irq;
164
165 /* Mask all interrupt sources */
166 tps->irq_mask = TPS65217_INT_MASK;
167 tps65217_set_bits(tps, TPS65217_REG_INT, TPS65217_INT_MASK,
168 TPS65217_INT_MASK, TPS65217_PROTECT_NONE);
169
170 tps->irq_domain = irq_domain_add_linear(tps->dev->of_node,
171 TPS65217_NUM_IRQ, &tps65217_irq_domain_ops, tps);
172 if (!tps->irq_domain) {
173 dev_err(tps->dev, "Could not create IRQ domain\n");
174 return -ENOMEM;
175 }
176
177 ret = devm_request_threaded_irq(tps->dev, irq, NULL,
178 tps65217_irq_thread, IRQF_ONESHOT,
179 "tps65217-irq", tps);
180 if (ret) {
181 dev_err(tps->dev, "Failed to request IRQ %d: %d\n",
182 irq, ret);
183 return ret;
184 }
185
186 enable_irq_wake(irq);
187
188 return 0;
189}
190
191/**
192 * tps65217_reg_read: Read a single tps65217 register.
193 *
194 * @tps: Device to read from.
195 * @reg: Register to read.
196 * @val: Contians the value
197 */
198int tps65217_reg_read(struct tps65217 *tps, unsigned int reg,
199 unsigned int *val)
200{
201 return regmap_read(tps->regmap, reg, val);
202}
203EXPORT_SYMBOL_GPL(tps65217_reg_read);
204
205/**
206 * tps65217_reg_write: Write a single tps65217 register.
207 *
208 * @tps: Device to write to.
209 * @reg: Register to write to.
210 * @val: Value to write.
211 * @level: Password protected level
212 */
213int tps65217_reg_write(struct tps65217 *tps, unsigned int reg,
214 unsigned int val, unsigned int level)
215{
216 int ret;
217 unsigned int xor_reg_val;
218
219 switch (level) {
220 case TPS65217_PROTECT_NONE:
221 return regmap_write(tps->regmap, reg, val);
222 case TPS65217_PROTECT_L1:
223 xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
224 ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
225 xor_reg_val);
226 if (ret < 0)
227 return ret;
228
229 return regmap_write(tps->regmap, reg, val);
230 case TPS65217_PROTECT_L2:
231 xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
232 ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
233 xor_reg_val);
234 if (ret < 0)
235 return ret;
236 ret = regmap_write(tps->regmap, reg, val);
237 if (ret < 0)
238 return ret;
239 ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
240 xor_reg_val);
241 if (ret < 0)
242 return ret;
243 return regmap_write(tps->regmap, reg, val);
244 default:
245 return -EINVAL;
246 }
247}
248EXPORT_SYMBOL_GPL(tps65217_reg_write);
249
250/**
251 * tps65217_update_bits: Modify bits w.r.t mask, val and level.
252 *
253 * @tps: Device to write to.
254 * @reg: Register to read-write to.
255 * @mask: Mask.
256 * @val: Value to write.
257 * @level: Password protected level
258 */
259static int tps65217_update_bits(struct tps65217 *tps, unsigned int reg,
260 unsigned int mask, unsigned int val, unsigned int level)
261{
262 int ret;
263 unsigned int data;
264
265 ret = tps65217_reg_read(tps, reg, &data);
266 if (ret) {
267 dev_err(tps->dev, "Read from reg 0x%x failed\n", reg);
268 return ret;
269 }
270
271 data &= ~mask;
272 data |= val & mask;
273
274 ret = tps65217_reg_write(tps, reg, data, level);
275 if (ret)
276 dev_err(tps->dev, "Write for reg 0x%x failed\n", reg);
277
278 return ret;
279}
280
281int tps65217_set_bits(struct tps65217 *tps, unsigned int reg,
282 unsigned int mask, unsigned int val, unsigned int level)
283{
284 return tps65217_update_bits(tps, reg, mask, val, level);
285}
286EXPORT_SYMBOL_GPL(tps65217_set_bits);
287
288int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg,
289 unsigned int mask, unsigned int level)
290{
291 return tps65217_update_bits(tps, reg, mask, 0, level);
292}
293EXPORT_SYMBOL_GPL(tps65217_clear_bits);
294
295static bool tps65217_volatile_reg(struct device *dev, unsigned int reg)
296{
297 switch (reg) {
298 case TPS65217_REG_INT:
299 return true;
300 default:
301 return false;
302 }
303}
304
305static const struct regmap_config tps65217_regmap_config = {
306 .reg_bits = 8,
307 .val_bits = 8,
308
309 .max_register = TPS65217_REG_MAX,
310 .volatile_reg = tps65217_volatile_reg,
311};
312
313static const struct of_device_id tps65217_of_match[] = {
314 { .compatible = "ti,tps65217"},
315 { /* sentinel */ },
316};
317MODULE_DEVICE_TABLE(of, tps65217_of_match);
318
319static int tps65217_probe(struct i2c_client *client)
320{
321 struct tps65217 *tps;
322 unsigned int version;
323 bool status_off = false;
324 int ret;
325
326 status_off = of_property_read_bool(client->dev.of_node,
327 "ti,pmic-shutdown-controller");
328
329 tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
330 if (!tps)
331 return -ENOMEM;
332
333 i2c_set_clientdata(client, tps);
334 tps->dev = &client->dev;
335
336 tps->regmap = devm_regmap_init_i2c(client, &tps65217_regmap_config);
337 if (IS_ERR(tps->regmap)) {
338 ret = PTR_ERR(tps->regmap);
339 dev_err(tps->dev, "Failed to allocate register map: %d\n",
340 ret);
341 return ret;
342 }
343
344 if (client->irq) {
345 tps65217_irq_init(tps, client->irq);
346 } else {
347 int i;
348
349 /* Don't tell children about IRQ resources which won't fire */
350 for (i = 0; i < ARRAY_SIZE(tps65217s); i++)
351 tps65217s[i].num_resources = 0;
352 }
353
354 ret = devm_mfd_add_devices(tps->dev, -1, tps65217s,
355 ARRAY_SIZE(tps65217s), NULL, 0,
356 tps->irq_domain);
357 if (ret < 0) {
358 dev_err(tps->dev, "mfd_add_devices failed: %d\n", ret);
359 return ret;
360 }
361
362 ret = tps65217_reg_read(tps, TPS65217_REG_CHIPID, &version);
363 if (ret < 0) {
364 dev_err(tps->dev, "Failed to read revision register: %d\n",
365 ret);
366 return ret;
367 }
368
369 /* Set the PMIC to shutdown on PWR_EN toggle */
370 if (status_off) {
371 ret = tps65217_set_bits(tps, TPS65217_REG_STATUS,
372 TPS65217_STATUS_OFF, TPS65217_STATUS_OFF,
373 TPS65217_PROTECT_NONE);
374 if (ret)
375 dev_warn(tps->dev, "unable to set the status OFF\n");
376 }
377
378 dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
379 (version & TPS65217_CHIPID_CHIP_MASK) >> 4,
380 version & TPS65217_CHIPID_REV_MASK);
381
382 return 0;
383}
384
385static int tps65217_remove(struct i2c_client *client)
386{
387 struct tps65217 *tps = i2c_get_clientdata(client);
388 unsigned int virq;
389 int i;
390
391 for (i = 0; i < TPS65217_NUM_IRQ; i++) {
392 virq = irq_find_mapping(tps->irq_domain, i);
393 if (virq)
394 irq_dispose_mapping(virq);
395 }
396
397 irq_domain_remove(tps->irq_domain);
398 tps->irq_domain = NULL;
399
400 return 0;
401}
402
403static const struct i2c_device_id tps65217_id_table[] = {
404 {"tps65217", TPS65217},
405 { /* sentinel */ }
406};
407MODULE_DEVICE_TABLE(i2c, tps65217_id_table);
408
409static struct i2c_driver tps65217_driver = {
410 .driver = {
411 .name = "tps65217",
412 .of_match_table = tps65217_of_match,
413 },
414 .id_table = tps65217_id_table,
415 .probe_new = tps65217_probe,
416 .remove = tps65217_remove,
417};
418
419static int __init tps65217_init(void)
420{
421 return i2c_add_driver(&tps65217_driver);
422}
423subsys_initcall(tps65217_init);
424
425static void __exit tps65217_exit(void)
426{
427 i2c_del_driver(&tps65217_driver);
428}
429module_exit(tps65217_exit);
430
431MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
432MODULE_DESCRIPTION("TPS65217 chip family multi-function driver");
433MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * tps65217.c
4 *
5 * TPS65217 chip family multi-function driver
6 *
7 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
8 */
9
10#include <linux/device.h>
11#include <linux/err.h>
12#include <linux/init.h>
13#include <linux/interrupt.h>
14#include <linux/i2c.h>
15#include <linux/irq.h>
16#include <linux/irqdomain.h>
17#include <linux/kernel.h>
18#include <linux/module.h>
19#include <linux/of.h>
20#include <linux/of_device.h>
21#include <linux/platform_device.h>
22#include <linux/regmap.h>
23#include <linux/slab.h>
24
25#include <linux/mfd/core.h>
26#include <linux/mfd/tps65217.h>
27
28static const struct resource charger_resources[] = {
29 DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_AC, "AC"),
30 DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_USB, "USB"),
31};
32
33static const struct resource pb_resources[] = {
34 DEFINE_RES_IRQ_NAMED(TPS65217_IRQ_PB, "PB"),
35};
36
37static void tps65217_irq_lock(struct irq_data *data)
38{
39 struct tps65217 *tps = irq_data_get_irq_chip_data(data);
40
41 mutex_lock(&tps->irq_lock);
42}
43
44static void tps65217_irq_sync_unlock(struct irq_data *data)
45{
46 struct tps65217 *tps = irq_data_get_irq_chip_data(data);
47 int ret;
48
49 ret = tps65217_set_bits(tps, TPS65217_REG_INT, TPS65217_INT_MASK,
50 tps->irq_mask, TPS65217_PROTECT_NONE);
51 if (ret != 0)
52 dev_err(tps->dev, "Failed to sync IRQ masks\n");
53
54 mutex_unlock(&tps->irq_lock);
55}
56
57static void tps65217_irq_enable(struct irq_data *data)
58{
59 struct tps65217 *tps = irq_data_get_irq_chip_data(data);
60 u8 mask = BIT(data->hwirq) << TPS65217_INT_SHIFT;
61
62 tps->irq_mask &= ~mask;
63}
64
65static void tps65217_irq_disable(struct irq_data *data)
66{
67 struct tps65217 *tps = irq_data_get_irq_chip_data(data);
68 u8 mask = BIT(data->hwirq) << TPS65217_INT_SHIFT;
69
70 tps->irq_mask |= mask;
71}
72
73static struct irq_chip tps65217_irq_chip = {
74 .name = "tps65217",
75 .irq_bus_lock = tps65217_irq_lock,
76 .irq_bus_sync_unlock = tps65217_irq_sync_unlock,
77 .irq_enable = tps65217_irq_enable,
78 .irq_disable = tps65217_irq_disable,
79};
80
81static struct mfd_cell tps65217s[] = {
82 {
83 .name = "tps65217-pmic",
84 .of_compatible = "ti,tps65217-pmic",
85 },
86 {
87 .name = "tps65217-bl",
88 .of_compatible = "ti,tps65217-bl",
89 },
90 {
91 .name = "tps65217-charger",
92 .num_resources = ARRAY_SIZE(charger_resources),
93 .resources = charger_resources,
94 .of_compatible = "ti,tps65217-charger",
95 },
96 {
97 .name = "tps65217-pwrbutton",
98 .num_resources = ARRAY_SIZE(pb_resources),
99 .resources = pb_resources,
100 .of_compatible = "ti,tps65217-pwrbutton",
101 },
102};
103
104static irqreturn_t tps65217_irq_thread(int irq, void *data)
105{
106 struct tps65217 *tps = data;
107 unsigned int status;
108 bool handled = false;
109 int i;
110 int ret;
111
112 ret = tps65217_reg_read(tps, TPS65217_REG_INT, &status);
113 if (ret < 0) {
114 dev_err(tps->dev, "Failed to read IRQ status: %d\n",
115 ret);
116 return IRQ_NONE;
117 }
118
119 for (i = 0; i < TPS65217_NUM_IRQ; i++) {
120 if (status & BIT(i)) {
121 handle_nested_irq(irq_find_mapping(tps->irq_domain, i));
122 handled = true;
123 }
124 }
125
126 if (handled)
127 return IRQ_HANDLED;
128
129 return IRQ_NONE;
130}
131
132static int tps65217_irq_map(struct irq_domain *h, unsigned int virq,
133 irq_hw_number_t hw)
134{
135 struct tps65217 *tps = h->host_data;
136
137 irq_set_chip_data(virq, tps);
138 irq_set_chip_and_handler(virq, &tps65217_irq_chip, handle_edge_irq);
139 irq_set_nested_thread(virq, 1);
140 irq_set_parent(virq, tps->irq);
141 irq_set_noprobe(virq);
142
143 return 0;
144}
145
146static const struct irq_domain_ops tps65217_irq_domain_ops = {
147 .map = tps65217_irq_map,
148};
149
150static int tps65217_irq_init(struct tps65217 *tps, int irq)
151{
152 int ret;
153
154 mutex_init(&tps->irq_lock);
155 tps->irq = irq;
156
157 /* Mask all interrupt sources */
158 tps->irq_mask = TPS65217_INT_MASK;
159 tps65217_set_bits(tps, TPS65217_REG_INT, TPS65217_INT_MASK,
160 TPS65217_INT_MASK, TPS65217_PROTECT_NONE);
161
162 tps->irq_domain = irq_domain_add_linear(tps->dev->of_node,
163 TPS65217_NUM_IRQ, &tps65217_irq_domain_ops, tps);
164 if (!tps->irq_domain) {
165 dev_err(tps->dev, "Could not create IRQ domain\n");
166 return -ENOMEM;
167 }
168
169 ret = devm_request_threaded_irq(tps->dev, irq, NULL,
170 tps65217_irq_thread, IRQF_ONESHOT,
171 "tps65217-irq", tps);
172 if (ret) {
173 dev_err(tps->dev, "Failed to request IRQ %d: %d\n",
174 irq, ret);
175 return ret;
176 }
177
178 enable_irq_wake(irq);
179
180 return 0;
181}
182
183/**
184 * tps65217_reg_read: Read a single tps65217 register.
185 *
186 * @tps: Device to read from.
187 * @reg: Register to read.
188 * @val: Contians the value
189 */
190int tps65217_reg_read(struct tps65217 *tps, unsigned int reg,
191 unsigned int *val)
192{
193 return regmap_read(tps->regmap, reg, val);
194}
195EXPORT_SYMBOL_GPL(tps65217_reg_read);
196
197/**
198 * tps65217_reg_write: Write a single tps65217 register.
199 *
200 * @tps: Device to write to.
201 * @reg: Register to write to.
202 * @val: Value to write.
203 * @level: Password protected level
204 */
205int tps65217_reg_write(struct tps65217 *tps, unsigned int reg,
206 unsigned int val, unsigned int level)
207{
208 int ret;
209 unsigned int xor_reg_val;
210
211 switch (level) {
212 case TPS65217_PROTECT_NONE:
213 return regmap_write(tps->regmap, reg, val);
214 case TPS65217_PROTECT_L1:
215 xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
216 ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
217 xor_reg_val);
218 if (ret < 0)
219 return ret;
220
221 return regmap_write(tps->regmap, reg, val);
222 case TPS65217_PROTECT_L2:
223 xor_reg_val = reg ^ TPS65217_PASSWORD_REGS_UNLOCK;
224 ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
225 xor_reg_val);
226 if (ret < 0)
227 return ret;
228 ret = regmap_write(tps->regmap, reg, val);
229 if (ret < 0)
230 return ret;
231 ret = regmap_write(tps->regmap, TPS65217_REG_PASSWORD,
232 xor_reg_val);
233 if (ret < 0)
234 return ret;
235 return regmap_write(tps->regmap, reg, val);
236 default:
237 return -EINVAL;
238 }
239}
240EXPORT_SYMBOL_GPL(tps65217_reg_write);
241
242/**
243 * tps65217_update_bits: Modify bits w.r.t mask, val and level.
244 *
245 * @tps: Device to write to.
246 * @reg: Register to read-write to.
247 * @mask: Mask.
248 * @val: Value to write.
249 * @level: Password protected level
250 */
251static int tps65217_update_bits(struct tps65217 *tps, unsigned int reg,
252 unsigned int mask, unsigned int val, unsigned int level)
253{
254 int ret;
255 unsigned int data;
256
257 ret = tps65217_reg_read(tps, reg, &data);
258 if (ret) {
259 dev_err(tps->dev, "Read from reg 0x%x failed\n", reg);
260 return ret;
261 }
262
263 data &= ~mask;
264 data |= val & mask;
265
266 ret = tps65217_reg_write(tps, reg, data, level);
267 if (ret)
268 dev_err(tps->dev, "Write for reg 0x%x failed\n", reg);
269
270 return ret;
271}
272
273int tps65217_set_bits(struct tps65217 *tps, unsigned int reg,
274 unsigned int mask, unsigned int val, unsigned int level)
275{
276 return tps65217_update_bits(tps, reg, mask, val, level);
277}
278EXPORT_SYMBOL_GPL(tps65217_set_bits);
279
280int tps65217_clear_bits(struct tps65217 *tps, unsigned int reg,
281 unsigned int mask, unsigned int level)
282{
283 return tps65217_update_bits(tps, reg, mask, 0, level);
284}
285EXPORT_SYMBOL_GPL(tps65217_clear_bits);
286
287static bool tps65217_volatile_reg(struct device *dev, unsigned int reg)
288{
289 switch (reg) {
290 case TPS65217_REG_INT:
291 return true;
292 default:
293 return false;
294 }
295}
296
297static const struct regmap_config tps65217_regmap_config = {
298 .reg_bits = 8,
299 .val_bits = 8,
300
301 .max_register = TPS65217_REG_MAX,
302 .volatile_reg = tps65217_volatile_reg,
303};
304
305static const struct of_device_id tps65217_of_match[] = {
306 { .compatible = "ti,tps65217"},
307 { /* sentinel */ },
308};
309MODULE_DEVICE_TABLE(of, tps65217_of_match);
310
311static int tps65217_probe(struct i2c_client *client)
312{
313 struct tps65217 *tps;
314 unsigned int version;
315 bool status_off = false;
316 int ret;
317
318 status_off = of_property_read_bool(client->dev.of_node,
319 "ti,pmic-shutdown-controller");
320
321 tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
322 if (!tps)
323 return -ENOMEM;
324
325 i2c_set_clientdata(client, tps);
326 tps->dev = &client->dev;
327
328 tps->regmap = devm_regmap_init_i2c(client, &tps65217_regmap_config);
329 if (IS_ERR(tps->regmap)) {
330 ret = PTR_ERR(tps->regmap);
331 dev_err(tps->dev, "Failed to allocate register map: %d\n",
332 ret);
333 return ret;
334 }
335
336 if (client->irq) {
337 tps65217_irq_init(tps, client->irq);
338 } else {
339 int i;
340
341 /* Don't tell children about IRQ resources which won't fire */
342 for (i = 0; i < ARRAY_SIZE(tps65217s); i++)
343 tps65217s[i].num_resources = 0;
344 }
345
346 ret = devm_mfd_add_devices(tps->dev, -1, tps65217s,
347 ARRAY_SIZE(tps65217s), NULL, 0,
348 tps->irq_domain);
349 if (ret < 0) {
350 dev_err(tps->dev, "mfd_add_devices failed: %d\n", ret);
351 return ret;
352 }
353
354 ret = tps65217_reg_read(tps, TPS65217_REG_CHIPID, &version);
355 if (ret < 0) {
356 dev_err(tps->dev, "Failed to read revision register: %d\n",
357 ret);
358 return ret;
359 }
360
361 /* Set the PMIC to shutdown on PWR_EN toggle */
362 if (status_off) {
363 ret = tps65217_set_bits(tps, TPS65217_REG_STATUS,
364 TPS65217_STATUS_OFF, TPS65217_STATUS_OFF,
365 TPS65217_PROTECT_NONE);
366 if (ret)
367 dev_warn(tps->dev, "unable to set the status OFF\n");
368 }
369
370 dev_info(tps->dev, "TPS65217 ID %#x version 1.%d\n",
371 (version & TPS65217_CHIPID_CHIP_MASK) >> 4,
372 version & TPS65217_CHIPID_REV_MASK);
373
374 return 0;
375}
376
377static void tps65217_remove(struct i2c_client *client)
378{
379 struct tps65217 *tps = i2c_get_clientdata(client);
380 unsigned int virq;
381 int i;
382
383 for (i = 0; i < TPS65217_NUM_IRQ; i++) {
384 virq = irq_find_mapping(tps->irq_domain, i);
385 if (virq)
386 irq_dispose_mapping(virq);
387 }
388
389 irq_domain_remove(tps->irq_domain);
390 tps->irq_domain = NULL;
391}
392
393static const struct i2c_device_id tps65217_id_table[] = {
394 {"tps65217", TPS65217},
395 { /* sentinel */ }
396};
397MODULE_DEVICE_TABLE(i2c, tps65217_id_table);
398
399static struct i2c_driver tps65217_driver = {
400 .driver = {
401 .name = "tps65217",
402 .of_match_table = tps65217_of_match,
403 },
404 .id_table = tps65217_id_table,
405 .probe_new = tps65217_probe,
406 .remove = tps65217_remove,
407};
408
409static int __init tps65217_init(void)
410{
411 return i2c_add_driver(&tps65217_driver);
412}
413subsys_initcall(tps65217_init);
414
415static void __exit tps65217_exit(void)
416{
417 i2c_del_driver(&tps65217_driver);
418}
419module_exit(tps65217_exit);
420
421MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");
422MODULE_DESCRIPTION("TPS65217 chip family multi-function driver");
423MODULE_LICENSE("GPL v2");