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