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v5.9
 
  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");
v6.9.4
  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");