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Commit | Line | Data |
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c6c19332 MR |
1 | /* |
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 | ||
c26448c4 GK |
18 | #include <linux/interrupt.h> |
19 | #include <linux/irq.h> | |
605511a8 | 20 | #include <linux/irqdomain.h> |
c6c19332 MR |
21 | #include <linux/kernel.h> |
22 | #include <linux/module.h> | |
23 | #include <linux/mutex.h> | |
24 | #include <linux/slab.h> | |
1176b5be | 25 | #include <linux/err.h> |
c6c19332 | 26 | #include <linux/i2c.h> |
605511a8 | 27 | #include <linux/platform_device.h> |
1176b5be | 28 | #include <linux/regmap.h> |
06bf3c2f | 29 | #include <linux/of.h> |
c6c19332 MR |
30 | |
31 | #include <linux/mfd/core.h> | |
32 | #include <linux/mfd/tps6586x.h> | |
33 | ||
004c15a6 BH |
34 | #define TPS6586X_SUPPLYENE 0x14 |
35 | #define EXITSLREQ_BIT BIT(1) | |
36 | #define SLEEP_MODE_BIT BIT(3) | |
37 | ||
c26448c4 GK |
38 | /* 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 | ||
c6c19332 MR |
51 | /* device id */ |
52 | #define TPS6586X_VERSIONCRC 0xcd | |
c6c19332 | 53 | |
1176b5be LD |
54 | /* Maximum register */ |
55 | #define TPS6586X_MAX_REGISTER (TPS6586X_VERSIONCRC + 1) | |
56 | ||
c26448c4 GK |
57 | struct 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 | ||
68 | static 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 | ||
5b8b1fe2 LD |
98 | static 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 | ||
7a7487cb LD |
106 | static struct mfd_cell tps6586x_cell[] = { |
107 | { | |
108 | .name = "tps6586x-gpio", | |
109 | }, | |
64e48160 | 110 | { |
ec8da805 | 111 | .name = "tps6586x-regulator", |
64e48160 | 112 | }, |
7a7487cb LD |
113 | { |
114 | .name = "tps6586x-rtc", | |
5b8b1fe2 LD |
115 | .num_resources = ARRAY_SIZE(tps6586x_rtc_resources), |
116 | .resources = &tps6586x_rtc_resources[0], | |
7a7487cb LD |
117 | }, |
118 | { | |
119 | .name = "tps6586x-onkey", | |
120 | }, | |
121 | }; | |
122 | ||
c6c19332 | 123 | struct tps6586x { |
c6c19332 MR |
124 | struct device *dev; |
125 | struct i2c_client *client; | |
1176b5be | 126 | struct regmap *regmap; |
c6c19332 | 127 | |
234506ad | 128 | int irq; |
c26448c4 GK |
129 | struct irq_chip irq_chip; |
130 | struct mutex irq_lock; | |
131 | int irq_base; | |
132 | u32 irq_en; | |
c26448c4 | 133 | u8 mask_reg[5]; |
605511a8 | 134 | struct irq_domain *irq_domain; |
c6c19332 MR |
135 | }; |
136 | ||
1176b5be | 137 | static inline struct tps6586x *dev_to_tps6586x(struct device *dev) |
c6c19332 | 138 | { |
1176b5be | 139 | return i2c_get_clientdata(to_i2c_client(dev)); |
c6c19332 MR |
140 | } |
141 | ||
142 | int tps6586x_write(struct device *dev, int reg, uint8_t val) | |
143 | { | |
1176b5be LD |
144 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
145 | ||
146 | return regmap_write(tps6586x->regmap, reg, val); | |
c6c19332 MR |
147 | } |
148 | EXPORT_SYMBOL_GPL(tps6586x_write); | |
149 | ||
150 | int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val) | |
151 | { | |
1176b5be LD |
152 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
153 | ||
154 | return regmap_bulk_write(tps6586x->regmap, reg, val, len); | |
c6c19332 MR |
155 | } |
156 | EXPORT_SYMBOL_GPL(tps6586x_writes); | |
157 | ||
158 | int tps6586x_read(struct device *dev, int reg, uint8_t *val) | |
159 | { | |
1176b5be LD |
160 | 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; | |
c6c19332 MR |
168 | } |
169 | EXPORT_SYMBOL_GPL(tps6586x_read); | |
170 | ||
171 | int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val) | |
172 | { | |
1176b5be LD |
173 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
174 | ||
175 | return regmap_bulk_read(tps6586x->regmap, reg, val, len); | |
c6c19332 MR |
176 | } |
177 | EXPORT_SYMBOL_GPL(tps6586x_reads); | |
178 | ||
179 | int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask) | |
180 | { | |
1176b5be | 181 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
c6c19332 | 182 | |
1176b5be | 183 | return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask); |
c6c19332 MR |
184 | } |
185 | EXPORT_SYMBOL_GPL(tps6586x_set_bits); | |
186 | ||
187 | int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask) | |
188 | { | |
1176b5be | 189 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
c6c19332 | 190 | |
1176b5be | 191 | return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0); |
c6c19332 MR |
192 | } |
193 | EXPORT_SYMBOL_GPL(tps6586x_clr_bits); | |
194 | ||
195 | int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask) | |
196 | { | |
1176b5be | 197 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
c6c19332 | 198 | |
1176b5be | 199 | return regmap_update_bits(tps6586x->regmap, reg, mask, val); |
c6c19332 MR |
200 | } |
201 | EXPORT_SYMBOL_GPL(tps6586x_update); | |
202 | ||
605511a8 LD |
203 | int 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 | } | |
209 | EXPORT_SYMBOL_GPL(tps6586x_irq_get_virq); | |
210 | ||
c6c19332 MR |
211 | static int __remove_subdev(struct device *dev, void *unused) |
212 | { | |
213 | platform_device_unregister(to_platform_device(dev)); | |
214 | return 0; | |
215 | } | |
216 | ||
217 | static int tps6586x_remove_subdevs(struct tps6586x *tps6586x) | |
218 | { | |
219 | return device_for_each_child(tps6586x->dev, NULL, __remove_subdev); | |
220 | } | |
221 | ||
96e824bd | 222 | static void tps6586x_irq_lock(struct irq_data *data) |
c26448c4 | 223 | { |
96e824bd | 224 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data); |
c26448c4 GK |
225 | |
226 | mutex_lock(&tps6586x->irq_lock); | |
227 | } | |
228 | ||
96e824bd | 229 | static void tps6586x_irq_enable(struct irq_data *irq_data) |
c26448c4 | 230 | { |
96e824bd | 231 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data); |
605511a8 | 232 | unsigned int __irq = irq_data->hwirq; |
c26448c4 GK |
233 | 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 | ||
96e824bd | 239 | static void tps6586x_irq_disable(struct irq_data *irq_data) |
c26448c4 | 240 | { |
96e824bd | 241 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data); |
c26448c4 | 242 | |
605511a8 | 243 | unsigned int __irq = irq_data->hwirq; |
c26448c4 GK |
244 | 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 | ||
96e824bd | 250 | static void tps6586x_irq_sync_unlock(struct irq_data *data) |
c26448c4 | 251 | { |
96e824bd | 252 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data); |
c26448c4 GK |
253 | int i; |
254 | ||
255 | for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) { | |
75edd5af LD |
256 | int ret; |
257 | ret = tps6586x_write(tps6586x->dev, | |
258 | TPS6586X_INT_MASK1 + i, | |
259 | tps6586x->mask_reg[i]); | |
260 | WARN_ON(ret); | |
c26448c4 GK |
261 | } |
262 | ||
263 | mutex_unlock(&tps6586x->irq_lock); | |
264 | } | |
265 | ||
234506ad SW |
266 | #ifdef CONFIG_PM_SLEEP |
267 | static 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 | ||
605511a8 LD |
276 | static 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, | |
234506ad | 282 | .irq_set_wake = tps6586x_irq_set_wake, |
605511a8 LD |
283 | }; |
284 | ||
285 | static 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 | ||
305 | static struct irq_domain_ops tps6586x_domain_ops = { | |
306 | .map = tps6586x_irq_map, | |
307 | .xlate = irq_domain_xlate_twocell, | |
308 | }; | |
309 | ||
c26448c4 GK |
310 | static 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)) | |
605511a8 LD |
330 | handle_nested_irq( |
331 | irq_find_mapping(tps6586x->irq_domain, i)); | |
c26448c4 GK |
332 | |
333 | acks &= ~(1 << i); | |
334 | } | |
335 | ||
336 | return IRQ_HANDLED; | |
337 | } | |
338 | ||
f791be49 | 339 | static int tps6586x_irq_init(struct tps6586x *tps6586x, int irq, |
c26448c4 GK |
340 | int irq_base) |
341 | { | |
342 | int i, ret; | |
343 | u8 tmp[4]; | |
605511a8 LD |
344 | int new_irq_base; |
345 | int irq_num = ARRAY_SIZE(tps6586x_irqs); | |
c26448c4 | 346 | |
234506ad SW |
347 | tps6586x->irq = irq; |
348 | ||
c26448c4 GK |
349 | mutex_init(&tps6586x->irq_lock); |
350 | for (i = 0; i < 5; i++) { | |
c26448c4 GK |
351 | 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 | ||
605511a8 LD |
357 | 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; | |
c26448c4 GK |
366 | } |
367 | ||
605511a8 LD |
368 | 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 | } | |
c26448c4 GK |
375 | ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT, |
376 | "tps6586x", tps6586x); | |
377 | ||
234506ad | 378 | if (!ret) |
c26448c4 | 379 | device_init_wakeup(tps6586x->dev, 1); |
c26448c4 GK |
380 | |
381 | return ret; | |
382 | } | |
383 | ||
f791be49 | 384 | static int tps6586x_add_subdevs(struct tps6586x *tps6586x, |
c6c19332 MR |
385 | 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); | |
929980ab AL |
395 | if (!pdev) { |
396 | ret = -ENOMEM; | |
397 | goto failed; | |
398 | } | |
c6c19332 MR |
399 | |
400 | pdev->dev.parent = tps6586x->dev; | |
401 | pdev->dev.platform_data = subdev->platform_data; | |
62f6b087 | 402 | pdev->dev.of_node = subdev->of_node; |
c6c19332 MR |
403 | |
404 | ret = platform_device_add(pdev); | |
929980ab AL |
405 | if (ret) { |
406 | platform_device_put(pdev); | |
c6c19332 | 407 | goto failed; |
929980ab | 408 | } |
c6c19332 MR |
409 | } |
410 | return 0; | |
411 | ||
412 | failed: | |
413 | tps6586x_remove_subdevs(tps6586x); | |
414 | return ret; | |
415 | } | |
416 | ||
62f6b087 | 417 | #ifdef CONFIG_OF |
62f6b087 TR |
418 | static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client) |
419 | { | |
62f6b087 TR |
420 | struct device_node *np = client->dev.of_node; |
421 | struct tps6586x_platform_data *pdata; | |
62f6b087 TR |
422 | |
423 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
64e48160 LD |
424 | if (!pdata) { |
425 | dev_err(&client->dev, "Memory allocation failed\n"); | |
62f6b087 | 426 | return NULL; |
64e48160 | 427 | } |
62f6b087 | 428 | |
64e48160 LD |
429 | pdata->num_subdevs = 0; |
430 | pdata->subdevs = NULL; | |
62f6b087 TR |
431 | pdata->gpio_base = -1; |
432 | pdata->irq_base = -1; | |
004c15a6 | 433 | pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller"); |
62f6b087 TR |
434 | |
435 | return pdata; | |
436 | } | |
437 | ||
438 | static struct of_device_id tps6586x_of_match[] = { | |
439 | { .compatible = "ti,tps6586x", }, | |
440 | { }, | |
441 | }; | |
442 | #else | |
443 | static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client) | |
444 | { | |
445 | return NULL; | |
446 | } | |
447 | #endif | |
448 | ||
75edd5af LD |
449 | static 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 | ||
1176b5be LD |
458 | static const struct regmap_config tps6586x_regmap_config = { |
459 | .reg_bits = 8, | |
460 | .val_bits = 8, | |
461 | .max_register = TPS6586X_MAX_REGISTER - 1, | |
75edd5af LD |
462 | .volatile_reg = is_volatile_reg, |
463 | .cache_type = REGCACHE_RBTREE, | |
1176b5be LD |
464 | }; |
465 | ||
004c15a6 BH |
466 | static struct device *tps6586x_dev; |
467 | static 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 | ||
f791be49 | 475 | static int tps6586x_i2c_probe(struct i2c_client *client, |
c6c19332 MR |
476 | const struct i2c_device_id *id) |
477 | { | |
334a41ce | 478 | struct tps6586x_platform_data *pdata = dev_get_platdata(&client->dev); |
c6c19332 MR |
479 | struct tps6586x *tps6586x; |
480 | int ret; | |
481 | ||
62f6b087 TR |
482 | if (!pdata && client->dev.of_node) |
483 | pdata = tps6586x_parse_dt(client); | |
484 | ||
c6c19332 MR |
485 | 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 | ||
4d1cdbf6 | 496 | dev_info(&client->dev, "VERSIONCRC is %02x\n", ret); |
c6c19332 | 497 | |
b6719412 LD |
498 | tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL); |
499 | if (tps6586x == NULL) { | |
500 | dev_err(&client->dev, "memory for tps6586x alloc failed\n"); | |
c6c19332 | 501 | return -ENOMEM; |
b6719412 | 502 | } |
c6c19332 MR |
503 | |
504 | tps6586x->client = client; | |
505 | tps6586x->dev = &client->dev; | |
506 | i2c_set_clientdata(client, tps6586x); | |
507 | ||
1176b5be LD |
508 | 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 | ||
c6c19332 | 516 | |
c26448c4 GK |
517 | 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); | |
b6719412 | 522 | return ret; |
c26448c4 GK |
523 | } |
524 | } | |
525 | ||
7a7487cb | 526 | ret = mfd_add_devices(tps6586x->dev, -1, |
0848c94f | 527 | tps6586x_cell, ARRAY_SIZE(tps6586x_cell), |
5b8b1fe2 | 528 | NULL, 0, tps6586x->irq_domain); |
7a7487cb LD |
529 | if (ret < 0) { |
530 | dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret); | |
531 | goto err_mfd_add; | |
6f9f13bf VP |
532 | } |
533 | ||
c6c19332 MR |
534 | 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 | ||
004c15a6 BH |
540 | if (pdata->pm_off && !pm_power_off) { |
541 | tps6586x_dev = &client->dev; | |
542 | pm_power_off = tps6586x_power_off; | |
543 | } | |
544 | ||
c6c19332 MR |
545 | return 0; |
546 | ||
547 | err_add_devs: | |
7a7487cb LD |
548 | mfd_remove_devices(tps6586x->dev); |
549 | err_mfd_add: | |
c26448c4 GK |
550 | if (client->irq) |
551 | free_irq(client->irq, tps6586x); | |
c6c19332 MR |
552 | return ret; |
553 | } | |
554 | ||
4740f73f | 555 | static int tps6586x_i2c_remove(struct i2c_client *client) |
c6c19332 | 556 | { |
4b751cf5 | 557 | struct tps6586x *tps6586x = i2c_get_clientdata(client); |
4b751cf5 | 558 | |
7a7487cb LD |
559 | tps6586x_remove_subdevs(tps6586x); |
560 | mfd_remove_devices(tps6586x->dev); | |
c26448c4 GK |
561 | if (client->irq) |
562 | free_irq(client->irq, tps6586x); | |
c6c19332 MR |
563 | return 0; |
564 | } | |
565 | ||
566 | static const struct i2c_device_id tps6586x_id_table[] = { | |
567 | { "tps6586x", 0 }, | |
568 | { }, | |
569 | }; | |
570 | MODULE_DEVICE_TABLE(i2c, tps6586x_id_table); | |
571 | ||
572 | static struct i2c_driver tps6586x_driver = { | |
573 | .driver = { | |
574 | .name = "tps6586x", | |
575 | .owner = THIS_MODULE, | |
62f6b087 | 576 | .of_match_table = of_match_ptr(tps6586x_of_match), |
c6c19332 MR |
577 | }, |
578 | .probe = tps6586x_i2c_probe, | |
84449216 | 579 | .remove = tps6586x_i2c_remove, |
c6c19332 MR |
580 | .id_table = tps6586x_id_table, |
581 | }; | |
582 | ||
583 | static int __init tps6586x_init(void) | |
584 | { | |
585 | return i2c_add_driver(&tps6586x_driver); | |
586 | } | |
587 | subsys_initcall(tps6586x_init); | |
588 | ||
589 | static void __exit tps6586x_exit(void) | |
590 | { | |
591 | i2c_del_driver(&tps6586x_driver); | |
592 | } | |
593 | module_exit(tps6586x_exit); | |
594 | ||
595 | MODULE_DESCRIPTION("TPS6586X core driver"); | |
596 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); | |
597 | MODULE_LICENSE("GPL"); |