blob: ee61fd7c198da714c2dd56ba7be2bfe6da5a068d [file] [log] [blame]
Mike Rapoportc6c19332010-08-11 01:11:04 +02001/*
2 * Core driver for TI TPS6586x PMIC family
3 *
4 * Copyright (c) 2010 CompuLab Ltd.
5 * Mike Rapoport <mike@compulab.co.il>
6 *
7 * Based on da903x.c.
8 * Copyright (C) 2008 Compulab, Ltd.
9 * Mike Rapoport <mike@compulab.co.il>
10 * Copyright (C) 2006-2008 Marvell International Ltd.
11 * Eric Miao <eric.miao@marvell.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 */
17
Gary Kingc26448c2010-09-20 00:18:27 +020018#include <linux/interrupt.h>
19#include <linux/irq.h>
Laxman Dewangan605511a2012-11-13 19:18:05 +053020#include <linux/irqdomain.h>
Mike Rapoportc6c19332010-08-11 01:11:04 +020021#include <linux/kernel.h>
22#include <linux/module.h>
23#include <linux/mutex.h>
24#include <linux/slab.h>
Laxman Dewangan1176b5b2012-07-18 11:50:46 +053025#include <linux/err.h>
Mike Rapoportc6c19332010-08-11 01:11:04 +020026#include <linux/i2c.h>
Laxman Dewangan605511a2012-11-13 19:18:05 +053027#include <linux/platform_device.h>
Laxman Dewangan1176b5b2012-07-18 11:50:46 +053028#include <linux/regmap.h>
Sachin Kamat06bf3c22013-10-16 14:26:54 +053029#include <linux/of.h>
Mike Rapoportc6c19332010-08-11 01:11:04 +020030
31#include <linux/mfd/core.h>
32#include <linux/mfd/tps6586x.h>
33
Bill Huang004c15a2012-08-19 18:07:55 -070034#define TPS6586X_SUPPLYENE 0x14
35#define EXITSLREQ_BIT BIT(1)
36#define SLEEP_MODE_BIT BIT(3)
37
Gary Kingc26448c2010-09-20 00:18:27 +020038/* interrupt control registers */
39#define TPS6586X_INT_ACK1 0xb5
40#define TPS6586X_INT_ACK2 0xb6
41#define TPS6586X_INT_ACK3 0xb7
42#define TPS6586X_INT_ACK4 0xb8
43
44/* interrupt mask registers */
45#define TPS6586X_INT_MASK1 0xb0
46#define TPS6586X_INT_MASK2 0xb1
47#define TPS6586X_INT_MASK3 0xb2
48#define TPS6586X_INT_MASK4 0xb3
49#define TPS6586X_INT_MASK5 0xb4
50
Mike Rapoportc6c19332010-08-11 01:11:04 +020051/* device id */
52#define TPS6586X_VERSIONCRC 0xcd
Mike Rapoportc6c19332010-08-11 01:11:04 +020053
Laxman Dewangan1176b5b2012-07-18 11:50:46 +053054/* Maximum register */
55#define TPS6586X_MAX_REGISTER (TPS6586X_VERSIONCRC + 1)
56
Gary Kingc26448c2010-09-20 00:18:27 +020057struct tps6586x_irq_data {
58 u8 mask_reg;
59 u8 mask_mask;
60};
61
62#define TPS6586X_IRQ(_reg, _mask) \
63 { \
64 .mask_reg = (_reg) - TPS6586X_INT_MASK1, \
65 .mask_mask = (_mask), \
66 }
67
68static const struct tps6586x_irq_data tps6586x_irqs[] = {
69 [TPS6586X_INT_PLDO_0] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0),
70 [TPS6586X_INT_PLDO_1] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1),
71 [TPS6586X_INT_PLDO_2] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2),
72 [TPS6586X_INT_PLDO_3] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3),
73 [TPS6586X_INT_PLDO_4] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4),
74 [TPS6586X_INT_PLDO_5] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5),
75 [TPS6586X_INT_PLDO_6] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6),
76 [TPS6586X_INT_PLDO_7] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7),
77 [TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0),
78 [TPS6586X_INT_ADC] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1),
79 [TPS6586X_INT_PLDO_8] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2),
80 [TPS6586X_INT_PLDO_9] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3),
81 [TPS6586X_INT_PSM_0] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4),
82 [TPS6586X_INT_PSM_1] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5),
83 [TPS6586X_INT_PSM_2] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6),
84 [TPS6586X_INT_PSM_3] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7),
85 [TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4),
86 [TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03),
87 [TPS6586X_INT_USB_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2),
88 [TPS6586X_INT_AC_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3),
89 [TPS6586X_INT_BAT_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0),
90 [TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc),
91 [TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06),
92 [TPS6586X_INT_PP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0),
93 [TPS6586X_INT_RESUME] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5),
94 [TPS6586X_INT_LOW_SYS] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6),
95 [TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1),
96};
97
Laxman Dewangan5b8b1fe2012-11-13 19:18:06 +053098static struct resource tps6586x_rtc_resources[] = {
99 {
100 .start = TPS6586X_INT_RTC_ALM1,
101 .end = TPS6586X_INT_RTC_ALM1,
102 .flags = IORESOURCE_IRQ,
103 },
104};
105
Laxman Dewangan7a7487c2012-07-18 11:50:50 +0530106static struct mfd_cell tps6586x_cell[] = {
107 {
108 .name = "tps6586x-gpio",
109 },
110 {
Marc Dietrichec8da802013-06-10 22:27:55 +0200111 .name = "tps6586x-regulator",
Laxman Dewangan64e48162012-10-18 19:36:09 +0530112 },
113 {
Laxman Dewangan7a7487c2012-07-18 11:50:50 +0530114 .name = "tps6586x-rtc",
Laxman Dewangan5b8b1fe2012-11-13 19:18:06 +0530115 .num_resources = ARRAY_SIZE(tps6586x_rtc_resources),
116 .resources = &tps6586x_rtc_resources[0],
Laxman Dewangan7a7487c2012-07-18 11:50:50 +0530117 },
118 {
119 .name = "tps6586x-onkey",
120 },
121};
122
Mike Rapoportc6c19332010-08-11 01:11:04 +0200123struct tps6586x {
Mike Rapoportc6c19332010-08-11 01:11:04 +0200124 struct device *dev;
125 struct i2c_client *client;
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530126 struct regmap *regmap;
Mike Rapoportc6c19332010-08-11 01:11:04 +0200127
Stephen Warren234506a2013-09-06 17:17:13 -0600128 int irq;
Gary Kingc26448c2010-09-20 00:18:27 +0200129 struct irq_chip irq_chip;
130 struct mutex irq_lock;
131 int irq_base;
132 u32 irq_en;
Gary Kingc26448c2010-09-20 00:18:27 +0200133 u8 mask_reg[5];
Laxman Dewangan605511a2012-11-13 19:18:05 +0530134 struct irq_domain *irq_domain;
Mike Rapoportc6c19332010-08-11 01:11:04 +0200135};
136
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530137static inline struct tps6586x *dev_to_tps6586x(struct device *dev)
Mike Rapoportc6c19332010-08-11 01:11:04 +0200138{
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530139 return i2c_get_clientdata(to_i2c_client(dev));
Mike Rapoportc6c19332010-08-11 01:11:04 +0200140}
141
142int tps6586x_write(struct device *dev, int reg, uint8_t val)
143{
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530144 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
145
146 return regmap_write(tps6586x->regmap, reg, val);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200147}
148EXPORT_SYMBOL_GPL(tps6586x_write);
149
150int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val)
151{
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530152 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
153
154 return regmap_bulk_write(tps6586x->regmap, reg, val, len);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200155}
156EXPORT_SYMBOL_GPL(tps6586x_writes);
157
158int tps6586x_read(struct device *dev, int reg, uint8_t *val)
159{
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530160 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
161 unsigned int rval;
162 int ret;
163
164 ret = regmap_read(tps6586x->regmap, reg, &rval);
165 if (!ret)
166 *val = rval;
167 return ret;
Mike Rapoportc6c19332010-08-11 01:11:04 +0200168}
169EXPORT_SYMBOL_GPL(tps6586x_read);
170
171int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val)
172{
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530173 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
174
175 return regmap_bulk_read(tps6586x->regmap, reg, val, len);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200176}
177EXPORT_SYMBOL_GPL(tps6586x_reads);
178
179int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask)
180{
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530181 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200182
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530183 return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200184}
185EXPORT_SYMBOL_GPL(tps6586x_set_bits);
186
187int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask)
188{
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530189 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200190
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530191 return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200192}
193EXPORT_SYMBOL_GPL(tps6586x_clr_bits);
194
195int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask)
196{
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530197 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200198
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530199 return regmap_update_bits(tps6586x->regmap, reg, mask, val);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200200}
201EXPORT_SYMBOL_GPL(tps6586x_update);
202
Laxman Dewangan605511a2012-11-13 19:18:05 +0530203int tps6586x_irq_get_virq(struct device *dev, int irq)
204{
205 struct tps6586x *tps6586x = dev_to_tps6586x(dev);
206
207 return irq_create_mapping(tps6586x->irq_domain, irq);
208}
209EXPORT_SYMBOL_GPL(tps6586x_irq_get_virq);
210
Mike Rapoportc6c19332010-08-11 01:11:04 +0200211static int __remove_subdev(struct device *dev, void *unused)
212{
213 platform_device_unregister(to_platform_device(dev));
214 return 0;
215}
216
217static int tps6586x_remove_subdevs(struct tps6586x *tps6586x)
218{
219 return device_for_each_child(tps6586x->dev, NULL, __remove_subdev);
220}
221
Mark Brown96e824b2010-12-12 12:39:28 +0000222static void tps6586x_irq_lock(struct irq_data *data)
Gary Kingc26448c2010-09-20 00:18:27 +0200223{
Mark Brown96e824b2010-12-12 12:39:28 +0000224 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
Gary Kingc26448c2010-09-20 00:18:27 +0200225
226 mutex_lock(&tps6586x->irq_lock);
227}
228
Mark Brown96e824b2010-12-12 12:39:28 +0000229static void tps6586x_irq_enable(struct irq_data *irq_data)
Gary Kingc26448c2010-09-20 00:18:27 +0200230{
Mark Brown96e824b2010-12-12 12:39:28 +0000231 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
Laxman Dewangan605511a2012-11-13 19:18:05 +0530232 unsigned int __irq = irq_data->hwirq;
Gary Kingc26448c2010-09-20 00:18:27 +0200233 const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
234
235 tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask;
236 tps6586x->irq_en |= (1 << __irq);
237}
238
Mark Brown96e824b2010-12-12 12:39:28 +0000239static void tps6586x_irq_disable(struct irq_data *irq_data)
Gary Kingc26448c2010-09-20 00:18:27 +0200240{
Mark Brown96e824b2010-12-12 12:39:28 +0000241 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
Gary Kingc26448c2010-09-20 00:18:27 +0200242
Laxman Dewangan605511a2012-11-13 19:18:05 +0530243 unsigned int __irq = irq_data->hwirq;
Gary Kingc26448c2010-09-20 00:18:27 +0200244 const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq];
245
246 tps6586x->mask_reg[data->mask_reg] |= data->mask_mask;
247 tps6586x->irq_en &= ~(1 << __irq);
248}
249
Mark Brown96e824b2010-12-12 12:39:28 +0000250static void tps6586x_irq_sync_unlock(struct irq_data *data)
Gary Kingc26448c2010-09-20 00:18:27 +0200251{
Mark Brown96e824b2010-12-12 12:39:28 +0000252 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data);
Gary Kingc26448c2010-09-20 00:18:27 +0200253 int i;
254
255 for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) {
Laxman Dewangan75edd5a2012-07-18 11:50:47 +0530256 int ret;
257 ret = tps6586x_write(tps6586x->dev,
258 TPS6586X_INT_MASK1 + i,
259 tps6586x->mask_reg[i]);
260 WARN_ON(ret);
Gary Kingc26448c2010-09-20 00:18:27 +0200261 }
262
263 mutex_unlock(&tps6586x->irq_lock);
264}
265
Stephen Warren234506a2013-09-06 17:17:13 -0600266#ifdef CONFIG_PM_SLEEP
267static int tps6586x_irq_set_wake(struct irq_data *irq_data, unsigned int on)
268{
269 struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data);
270 return irq_set_irq_wake(tps6586x->irq, on);
271}
272#else
273#define tps6586x_irq_set_wake NULL
274#endif
275
Laxman Dewangan605511a2012-11-13 19:18:05 +0530276static struct irq_chip tps6586x_irq_chip = {
277 .name = "tps6586x",
278 .irq_bus_lock = tps6586x_irq_lock,
279 .irq_bus_sync_unlock = tps6586x_irq_sync_unlock,
280 .irq_disable = tps6586x_irq_disable,
281 .irq_enable = tps6586x_irq_enable,
Stephen Warren234506a2013-09-06 17:17:13 -0600282 .irq_set_wake = tps6586x_irq_set_wake,
Laxman Dewangan605511a2012-11-13 19:18:05 +0530283};
284
285static int tps6586x_irq_map(struct irq_domain *h, unsigned int virq,
286 irq_hw_number_t hw)
287{
288 struct tps6586x *tps6586x = h->host_data;
289
290 irq_set_chip_data(virq, tps6586x);
291 irq_set_chip_and_handler(virq, &tps6586x_irq_chip, handle_simple_irq);
292 irq_set_nested_thread(virq, 1);
293
294 /* ARM needs us to explicitly flag the IRQ as valid
295 * and will set them noprobe when we do so. */
296#ifdef CONFIG_ARM
297 set_irq_flags(virq, IRQF_VALID);
298#else
299 irq_set_noprobe(virq);
300#endif
301
302 return 0;
303}
304
305static struct irq_domain_ops tps6586x_domain_ops = {
306 .map = tps6586x_irq_map,
307 .xlate = irq_domain_xlate_twocell,
308};
309
Gary Kingc26448c2010-09-20 00:18:27 +0200310static irqreturn_t tps6586x_irq(int irq, void *data)
311{
312 struct tps6586x *tps6586x = data;
313 u32 acks;
314 int ret = 0;
315
316 ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1,
317 sizeof(acks), (uint8_t *)&acks);
318
319 if (ret < 0) {
320 dev_err(tps6586x->dev, "failed to read interrupt status\n");
321 return IRQ_NONE;
322 }
323
324 acks = le32_to_cpu(acks);
325
326 while (acks) {
327 int i = __ffs(acks);
328
329 if (tps6586x->irq_en & (1 << i))
Laxman Dewangan605511a2012-11-13 19:18:05 +0530330 handle_nested_irq(
331 irq_find_mapping(tps6586x->irq_domain, i));
Gary Kingc26448c2010-09-20 00:18:27 +0200332
333 acks &= ~(1 << i);
334 }
335
336 return IRQ_HANDLED;
337}
338
Bill Pembertonf791be42012-11-19 13:23:04 -0500339static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq,
Gary Kingc26448c2010-09-20 00:18:27 +0200340 int irq_base)
341{
342 int i, ret;
343 u8 tmp[4];
Laxman Dewangan605511a2012-11-13 19:18:05 +0530344 int new_irq_base;
345 int irq_num = ARRAY_SIZE(tps6586x_irqs);
Gary Kingc26448c2010-09-20 00:18:27 +0200346
Stephen Warren234506a2013-09-06 17:17:13 -0600347 tps6586x->irq = irq;
348
Gary Kingc26448c2010-09-20 00:18:27 +0200349 mutex_init(&tps6586x->irq_lock);
350 for (i = 0; i < 5; i++) {
Gary Kingc26448c2010-09-20 00:18:27 +0200351 tps6586x->mask_reg[i] = 0xff;
352 tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff);
353 }
354
355 tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp);
356
Laxman Dewangan605511a2012-11-13 19:18:05 +0530357 if (irq_base > 0) {
358 new_irq_base = irq_alloc_descs(irq_base, 0, irq_num, -1);
359 if (new_irq_base < 0) {
360 dev_err(tps6586x->dev,
361 "Failed to alloc IRQs: %d\n", new_irq_base);
362 return new_irq_base;
363 }
364 } else {
365 new_irq_base = 0;
Gary Kingc26448c2010-09-20 00:18:27 +0200366 }
367
Laxman Dewangan605511a2012-11-13 19:18:05 +0530368 tps6586x->irq_domain = irq_domain_add_simple(tps6586x->dev->of_node,
369 irq_num, new_irq_base, &tps6586x_domain_ops,
370 tps6586x);
371 if (!tps6586x->irq_domain) {
372 dev_err(tps6586x->dev, "Failed to create IRQ domain\n");
373 return -ENOMEM;
374 }
Gary Kingc26448c2010-09-20 00:18:27 +0200375 ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT,
376 "tps6586x", tps6586x);
377
Stephen Warren234506a2013-09-06 17:17:13 -0600378 if (!ret)
Gary Kingc26448c2010-09-20 00:18:27 +0200379 device_init_wakeup(tps6586x->dev, 1);
Gary Kingc26448c2010-09-20 00:18:27 +0200380
381 return ret;
382}
383
Bill Pembertonf791be42012-11-19 13:23:04 -0500384static int tps6586x_add_subdevs(struct tps6586x *tps6586x,
Mike Rapoportc6c19332010-08-11 01:11:04 +0200385 struct tps6586x_platform_data *pdata)
386{
387 struct tps6586x_subdev_info *subdev;
388 struct platform_device *pdev;
389 int i, ret = 0;
390
391 for (i = 0; i < pdata->num_subdevs; i++) {
392 subdev = &pdata->subdevs[i];
393
394 pdev = platform_device_alloc(subdev->name, subdev->id);
Axel Lin929980a2010-08-24 13:47:22 +0800395 if (!pdev) {
396 ret = -ENOMEM;
397 goto failed;
398 }
Mike Rapoportc6c19332010-08-11 01:11:04 +0200399
400 pdev->dev.parent = tps6586x->dev;
401 pdev->dev.platform_data = subdev->platform_data;
Thierry Reding62f6b082012-04-26 16:52:21 +0200402 pdev->dev.of_node = subdev->of_node;
Mike Rapoportc6c19332010-08-11 01:11:04 +0200403
404 ret = platform_device_add(pdev);
Axel Lin929980a2010-08-24 13:47:22 +0800405 if (ret) {
406 platform_device_put(pdev);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200407 goto failed;
Axel Lin929980a2010-08-24 13:47:22 +0800408 }
Mike Rapoportc6c19332010-08-11 01:11:04 +0200409 }
410 return 0;
411
412failed:
413 tps6586x_remove_subdevs(tps6586x);
414 return ret;
415}
416
Thierry Reding62f6b082012-04-26 16:52:21 +0200417#ifdef CONFIG_OF
Thierry Reding62f6b082012-04-26 16:52:21 +0200418static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
419{
Thierry Reding62f6b082012-04-26 16:52:21 +0200420 struct device_node *np = client->dev.of_node;
421 struct tps6586x_platform_data *pdata;
Thierry Reding62f6b082012-04-26 16:52:21 +0200422
423 pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
Laxman Dewangan64e48162012-10-18 19:36:09 +0530424 if (!pdata) {
425 dev_err(&client->dev, "Memory allocation failed\n");
Thierry Reding62f6b082012-04-26 16:52:21 +0200426 return NULL;
Laxman Dewangan64e48162012-10-18 19:36:09 +0530427 }
Thierry Reding62f6b082012-04-26 16:52:21 +0200428
Laxman Dewangan64e48162012-10-18 19:36:09 +0530429 pdata->num_subdevs = 0;
430 pdata->subdevs = NULL;
Thierry Reding62f6b082012-04-26 16:52:21 +0200431 pdata->gpio_base = -1;
432 pdata->irq_base = -1;
Bill Huang004c15a2012-08-19 18:07:55 -0700433 pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller");
Thierry Reding62f6b082012-04-26 16:52:21 +0200434
435 return pdata;
436}
437
438static struct of_device_id tps6586x_of_match[] = {
439 { .compatible = "ti,tps6586x", },
440 { },
441};
442#else
443static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
444{
445 return NULL;
446}
447#endif
448
Laxman Dewangan75edd5a2012-07-18 11:50:47 +0530449static bool is_volatile_reg(struct device *dev, unsigned int reg)
450{
451 /* Cache all interrupt mask register */
452 if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5))
453 return false;
454
455 return true;
456}
457
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530458static const struct regmap_config tps6586x_regmap_config = {
459 .reg_bits = 8,
460 .val_bits = 8,
461 .max_register = TPS6586X_MAX_REGISTER - 1,
Laxman Dewangan75edd5a2012-07-18 11:50:47 +0530462 .volatile_reg = is_volatile_reg,
463 .cache_type = REGCACHE_RBTREE,
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530464};
465
Bill Huang004c15a2012-08-19 18:07:55 -0700466static struct device *tps6586x_dev;
467static void tps6586x_power_off(void)
468{
469 if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT))
470 return;
471
472 tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT);
473}
474
Bill Pembertonf791be42012-11-19 13:23:04 -0500475static int tps6586x_i2c_probe(struct i2c_client *client,
Mike Rapoportc6c19332010-08-11 01:11:04 +0200476 const struct i2c_device_id *id)
477{
Jingoo Han334a41c2013-07-30 17:10:05 +0900478 struct tps6586x_platform_data *pdata = dev_get_platdata(&client->dev);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200479 struct tps6586x *tps6586x;
480 int ret;
481
Thierry Reding62f6b082012-04-26 16:52:21 +0200482 if (!pdata && client->dev.of_node)
483 pdata = tps6586x_parse_dt(client);
484
Mike Rapoportc6c19332010-08-11 01:11:04 +0200485 if (!pdata) {
486 dev_err(&client->dev, "tps6586x requires platform data\n");
487 return -ENOTSUPP;
488 }
489
490 ret = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC);
491 if (ret < 0) {
492 dev_err(&client->dev, "Chip ID read failed: %d\n", ret);
493 return -EIO;
494 }
495
Stephen Warren4d1cdbf2010-12-09 10:30:11 -0700496 dev_info(&client->dev, "VERSIONCRC is %02x\n", ret);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200497
Laxman Dewanganb6719412012-07-18 11:50:45 +0530498 tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL);
499 if (tps6586x == NULL) {
500 dev_err(&client->dev, "memory for tps6586x alloc failed\n");
Mike Rapoportc6c19332010-08-11 01:11:04 +0200501 return -ENOMEM;
Laxman Dewanganb6719412012-07-18 11:50:45 +0530502 }
Mike Rapoportc6c19332010-08-11 01:11:04 +0200503
504 tps6586x->client = client;
505 tps6586x->dev = &client->dev;
506 i2c_set_clientdata(client, tps6586x);
507
Laxman Dewangan1176b5b2012-07-18 11:50:46 +0530508 tps6586x->regmap = devm_regmap_init_i2c(client,
509 &tps6586x_regmap_config);
510 if (IS_ERR(tps6586x->regmap)) {
511 ret = PTR_ERR(tps6586x->regmap);
512 dev_err(&client->dev, "regmap init failed: %d\n", ret);
513 return ret;
514 }
515
Mike Rapoportc6c19332010-08-11 01:11:04 +0200516
Gary Kingc26448c2010-09-20 00:18:27 +0200517 if (client->irq) {
518 ret = tps6586x_irq_init(tps6586x, client->irq,
519 pdata->irq_base);
520 if (ret) {
521 dev_err(&client->dev, "IRQ init failed: %d\n", ret);
Laxman Dewanganb6719412012-07-18 11:50:45 +0530522 return ret;
Gary Kingc26448c2010-09-20 00:18:27 +0200523 }
524 }
525
Laxman Dewangan7a7487c2012-07-18 11:50:50 +0530526 ret = mfd_add_devices(tps6586x->dev, -1,
Mark Brown0848c942012-09-11 15:16:36 +0800527 tps6586x_cell, ARRAY_SIZE(tps6586x_cell),
Laxman Dewangan5b8b1fe2012-11-13 19:18:06 +0530528 NULL, 0, tps6586x->irq_domain);
Laxman Dewangan7a7487c2012-07-18 11:50:50 +0530529 if (ret < 0) {
530 dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret);
531 goto err_mfd_add;
Vincent Palatin6f9f13b2011-01-31 11:31:49 -0500532 }
533
Mike Rapoportc6c19332010-08-11 01:11:04 +0200534 ret = tps6586x_add_subdevs(tps6586x, pdata);
535 if (ret) {
536 dev_err(&client->dev, "add devices failed: %d\n", ret);
537 goto err_add_devs;
538 }
539
Bill Huang004c15a2012-08-19 18:07:55 -0700540 if (pdata->pm_off && !pm_power_off) {
541 tps6586x_dev = &client->dev;
542 pm_power_off = tps6586x_power_off;
543 }
544
Mike Rapoportc6c19332010-08-11 01:11:04 +0200545 return 0;
546
547err_add_devs:
Laxman Dewangan7a7487c2012-07-18 11:50:50 +0530548 mfd_remove_devices(tps6586x->dev);
549err_mfd_add:
Gary Kingc26448c2010-09-20 00:18:27 +0200550 if (client->irq)
551 free_irq(client->irq, tps6586x);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200552 return ret;
553}
554
Bill Pemberton4740f732012-11-19 13:26:01 -0500555static int tps6586x_i2c_remove(struct i2c_client *client)
Mike Rapoportc6c19332010-08-11 01:11:04 +0200556{
Axel Lin4b751cf2010-08-24 15:18:58 +0800557 struct tps6586x *tps6586x = i2c_get_clientdata(client);
Axel Lin4b751cf2010-08-24 15:18:58 +0800558
559 tps6586x_remove_subdevs(tps6586x);
Laxman Dewangan7a7487c2012-07-18 11:50:50 +0530560 mfd_remove_devices(tps6586x->dev);
561 if (client->irq)
562 free_irq(client->irq, tps6586x);
Mike Rapoportc6c19332010-08-11 01:11:04 +0200563 return 0;
564}
565
566static const struct i2c_device_id tps6586x_id_table[] = {
567 { "tps6586x", 0 },
568 { },
569};
570MODULE_DEVICE_TABLE(i2c, tps6586x_id_table);
571
572static struct i2c_driver tps6586x_driver = {
573 .driver = {
574 .name = "tps6586x",
575 .owner = THIS_MODULE,
Thierry Reding62f6b082012-04-26 16:52:21 +0200576 .of_match_table = of_match_ptr(tps6586x_of_match),
Mike Rapoportc6c19332010-08-11 01:11:04 +0200577 },
578 .probe = tps6586x_i2c_probe,
Bill Pemberton84449212012-11-19 13:20:24 -0500579 .remove = tps6586x_i2c_remove,
Mike Rapoportc6c19332010-08-11 01:11:04 +0200580 .id_table = tps6586x_id_table,
581};
582
583static int __init tps6586x_init(void)
584{
585 return i2c_add_driver(&tps6586x_driver);
586}
587subsys_initcall(tps6586x_init);
588
589static void __exit tps6586x_exit(void)
590{
591 i2c_del_driver(&tps6586x_driver);
592}
593module_exit(tps6586x_exit);
594
595MODULE_DESCRIPTION("TPS6586X core driver");
596MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
597MODULE_LICENSE("GPL");