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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> | |
c6c19332 MR |
20 | #include <linux/kernel.h> |
21 | #include <linux/module.h> | |
22 | #include <linux/mutex.h> | |
23 | #include <linux/slab.h> | |
24 | #include <linux/gpio.h> | |
25 | #include <linux/i2c.h> | |
26 | ||
27 | #include <linux/mfd/core.h> | |
28 | #include <linux/mfd/tps6586x.h> | |
29 | ||
30 | /* GPIO control registers */ | |
31 | #define TPS6586X_GPIOSET1 0x5d | |
32 | #define TPS6586X_GPIOSET2 0x5e | |
33 | ||
c26448c4 GK |
34 | /* interrupt control registers */ |
35 | #define TPS6586X_INT_ACK1 0xb5 | |
36 | #define TPS6586X_INT_ACK2 0xb6 | |
37 | #define TPS6586X_INT_ACK3 0xb7 | |
38 | #define TPS6586X_INT_ACK4 0xb8 | |
39 | ||
40 | /* interrupt mask registers */ | |
41 | #define TPS6586X_INT_MASK1 0xb0 | |
42 | #define TPS6586X_INT_MASK2 0xb1 | |
43 | #define TPS6586X_INT_MASK3 0xb2 | |
44 | #define TPS6586X_INT_MASK4 0xb3 | |
45 | #define TPS6586X_INT_MASK5 0xb4 | |
46 | ||
c6c19332 MR |
47 | /* device id */ |
48 | #define TPS6586X_VERSIONCRC 0xcd | |
c6c19332 | 49 | |
c26448c4 GK |
50 | struct tps6586x_irq_data { |
51 | u8 mask_reg; | |
52 | u8 mask_mask; | |
53 | }; | |
54 | ||
55 | #define TPS6586X_IRQ(_reg, _mask) \ | |
56 | { \ | |
57 | .mask_reg = (_reg) - TPS6586X_INT_MASK1, \ | |
58 | .mask_mask = (_mask), \ | |
59 | } | |
60 | ||
61 | static const struct tps6586x_irq_data tps6586x_irqs[] = { | |
62 | [TPS6586X_INT_PLDO_0] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0), | |
63 | [TPS6586X_INT_PLDO_1] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1), | |
64 | [TPS6586X_INT_PLDO_2] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2), | |
65 | [TPS6586X_INT_PLDO_3] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3), | |
66 | [TPS6586X_INT_PLDO_4] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4), | |
67 | [TPS6586X_INT_PLDO_5] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5), | |
68 | [TPS6586X_INT_PLDO_6] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6), | |
69 | [TPS6586X_INT_PLDO_7] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7), | |
70 | [TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0), | |
71 | [TPS6586X_INT_ADC] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1), | |
72 | [TPS6586X_INT_PLDO_8] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2), | |
73 | [TPS6586X_INT_PLDO_9] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3), | |
74 | [TPS6586X_INT_PSM_0] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4), | |
75 | [TPS6586X_INT_PSM_1] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5), | |
76 | [TPS6586X_INT_PSM_2] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6), | |
77 | [TPS6586X_INT_PSM_3] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7), | |
78 | [TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4), | |
79 | [TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03), | |
80 | [TPS6586X_INT_USB_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2), | |
81 | [TPS6586X_INT_AC_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3), | |
82 | [TPS6586X_INT_BAT_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0), | |
83 | [TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc), | |
84 | [TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06), | |
85 | [TPS6586X_INT_PP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0), | |
86 | [TPS6586X_INT_RESUME] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5), | |
87 | [TPS6586X_INT_LOW_SYS] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6), | |
88 | [TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1), | |
89 | }; | |
90 | ||
c6c19332 MR |
91 | struct tps6586x { |
92 | struct mutex lock; | |
93 | struct device *dev; | |
94 | struct i2c_client *client; | |
95 | ||
96 | struct gpio_chip gpio; | |
c26448c4 GK |
97 | struct irq_chip irq_chip; |
98 | struct mutex irq_lock; | |
99 | int irq_base; | |
100 | u32 irq_en; | |
101 | u8 mask_cache[5]; | |
102 | u8 mask_reg[5]; | |
c6c19332 MR |
103 | }; |
104 | ||
105 | static inline int __tps6586x_read(struct i2c_client *client, | |
106 | int reg, uint8_t *val) | |
107 | { | |
108 | int ret; | |
109 | ||
110 | ret = i2c_smbus_read_byte_data(client, reg); | |
111 | if (ret < 0) { | |
112 | dev_err(&client->dev, "failed reading at 0x%02x\n", reg); | |
113 | return ret; | |
114 | } | |
115 | ||
116 | *val = (uint8_t)ret; | |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
121 | static inline int __tps6586x_reads(struct i2c_client *client, int reg, | |
122 | int len, uint8_t *val) | |
123 | { | |
124 | int ret; | |
125 | ||
126 | ret = i2c_smbus_read_i2c_block_data(client, reg, len, val); | |
127 | if (ret < 0) { | |
128 | dev_err(&client->dev, "failed reading from 0x%02x\n", reg); | |
129 | return ret; | |
130 | } | |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
135 | static inline int __tps6586x_write(struct i2c_client *client, | |
136 | int reg, uint8_t val) | |
137 | { | |
138 | int ret; | |
139 | ||
140 | ret = i2c_smbus_write_byte_data(client, reg, val); | |
141 | if (ret < 0) { | |
142 | dev_err(&client->dev, "failed writing 0x%02x to 0x%02x\n", | |
143 | val, reg); | |
144 | return ret; | |
145 | } | |
146 | ||
147 | return 0; | |
148 | } | |
149 | ||
150 | static inline int __tps6586x_writes(struct i2c_client *client, int reg, | |
151 | int len, uint8_t *val) | |
152 | { | |
4b57018d | 153 | int ret, i; |
c6c19332 | 154 | |
4b57018d | 155 | for (i = 0; i < len; i++) { |
156 | ret = __tps6586x_write(client, reg + i, *(val + i)); | |
157 | if (ret < 0) | |
158 | return ret; | |
c6c19332 MR |
159 | } |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
164 | int tps6586x_write(struct device *dev, int reg, uint8_t val) | |
165 | { | |
166 | return __tps6586x_write(to_i2c_client(dev), reg, val); | |
167 | } | |
168 | EXPORT_SYMBOL_GPL(tps6586x_write); | |
169 | ||
170 | int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val) | |
171 | { | |
172 | return __tps6586x_writes(to_i2c_client(dev), reg, len, val); | |
173 | } | |
174 | EXPORT_SYMBOL_GPL(tps6586x_writes); | |
175 | ||
176 | int tps6586x_read(struct device *dev, int reg, uint8_t *val) | |
177 | { | |
178 | return __tps6586x_read(to_i2c_client(dev), reg, val); | |
179 | } | |
180 | EXPORT_SYMBOL_GPL(tps6586x_read); | |
181 | ||
182 | int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val) | |
183 | { | |
184 | return __tps6586x_reads(to_i2c_client(dev), reg, len, val); | |
185 | } | |
186 | EXPORT_SYMBOL_GPL(tps6586x_reads); | |
187 | ||
188 | int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask) | |
189 | { | |
190 | struct tps6586x *tps6586x = dev_get_drvdata(dev); | |
191 | uint8_t reg_val; | |
192 | int ret = 0; | |
193 | ||
194 | mutex_lock(&tps6586x->lock); | |
195 | ||
196 | ret = __tps6586x_read(to_i2c_client(dev), reg, ®_val); | |
197 | if (ret) | |
198 | goto out; | |
199 | ||
200 | if ((reg_val & bit_mask) == 0) { | |
201 | reg_val |= bit_mask; | |
202 | ret = __tps6586x_write(to_i2c_client(dev), reg, reg_val); | |
203 | } | |
204 | out: | |
205 | mutex_unlock(&tps6586x->lock); | |
206 | return ret; | |
207 | } | |
208 | EXPORT_SYMBOL_GPL(tps6586x_set_bits); | |
209 | ||
210 | int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask) | |
211 | { | |
212 | struct tps6586x *tps6586x = dev_get_drvdata(dev); | |
213 | uint8_t reg_val; | |
214 | int ret = 0; | |
215 | ||
216 | mutex_lock(&tps6586x->lock); | |
217 | ||
218 | ret = __tps6586x_read(to_i2c_client(dev), reg, ®_val); | |
219 | if (ret) | |
220 | goto out; | |
221 | ||
222 | if (reg_val & bit_mask) { | |
223 | reg_val &= ~bit_mask; | |
224 | ret = __tps6586x_write(to_i2c_client(dev), reg, reg_val); | |
225 | } | |
226 | out: | |
227 | mutex_unlock(&tps6586x->lock); | |
228 | return ret; | |
229 | } | |
230 | EXPORT_SYMBOL_GPL(tps6586x_clr_bits); | |
231 | ||
232 | int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask) | |
233 | { | |
234 | struct tps6586x *tps6586x = dev_get_drvdata(dev); | |
235 | uint8_t reg_val; | |
236 | int ret = 0; | |
237 | ||
238 | mutex_lock(&tps6586x->lock); | |
239 | ||
240 | ret = __tps6586x_read(tps6586x->client, reg, ®_val); | |
241 | if (ret) | |
242 | goto out; | |
243 | ||
244 | if ((reg_val & mask) != val) { | |
245 | reg_val = (reg_val & ~mask) | val; | |
246 | ret = __tps6586x_write(tps6586x->client, reg, reg_val); | |
247 | } | |
248 | out: | |
249 | mutex_unlock(&tps6586x->lock); | |
250 | return ret; | |
251 | } | |
252 | EXPORT_SYMBOL_GPL(tps6586x_update); | |
253 | ||
254 | static int tps6586x_gpio_get(struct gpio_chip *gc, unsigned offset) | |
255 | { | |
256 | struct tps6586x *tps6586x = container_of(gc, struct tps6586x, gpio); | |
257 | uint8_t val; | |
258 | int ret; | |
259 | ||
260 | ret = __tps6586x_read(tps6586x->client, TPS6586X_GPIOSET2, &val); | |
261 | if (ret) | |
262 | return ret; | |
263 | ||
264 | return !!(val & (1 << offset)); | |
265 | } | |
266 | ||
267 | ||
268 | static void tps6586x_gpio_set(struct gpio_chip *chip, unsigned offset, | |
269 | int value) | |
270 | { | |
271 | struct tps6586x *tps6586x = container_of(chip, struct tps6586x, gpio); | |
272 | ||
e6f1945b VP |
273 | tps6586x_update(tps6586x->dev, TPS6586X_GPIOSET2, |
274 | value << offset, 1 << offset); | |
c6c19332 MR |
275 | } |
276 | ||
277 | static int tps6586x_gpio_output(struct gpio_chip *gc, unsigned offset, | |
278 | int value) | |
279 | { | |
280 | struct tps6586x *tps6586x = container_of(gc, struct tps6586x, gpio); | |
281 | uint8_t val, mask; | |
282 | ||
283 | tps6586x_gpio_set(gc, offset, value); | |
284 | ||
285 | val = 0x1 << (offset * 2); | |
286 | mask = 0x3 << (offset * 2); | |
287 | ||
288 | return tps6586x_update(tps6586x->dev, TPS6586X_GPIOSET1, val, mask); | |
289 | } | |
290 | ||
6f9f13bf | 291 | static int tps6586x_gpio_init(struct tps6586x *tps6586x, int gpio_base) |
c6c19332 | 292 | { |
c6c19332 | 293 | if (!gpio_base) |
6f9f13bf | 294 | return 0; |
c6c19332 MR |
295 | |
296 | tps6586x->gpio.owner = THIS_MODULE; | |
297 | tps6586x->gpio.label = tps6586x->client->name; | |
298 | tps6586x->gpio.dev = tps6586x->dev; | |
299 | tps6586x->gpio.base = gpio_base; | |
300 | tps6586x->gpio.ngpio = 4; | |
301 | tps6586x->gpio.can_sleep = 1; | |
302 | ||
303 | /* FIXME: add handling of GPIOs as dedicated inputs */ | |
304 | tps6586x->gpio.direction_output = tps6586x_gpio_output; | |
305 | tps6586x->gpio.set = tps6586x_gpio_set; | |
306 | tps6586x->gpio.get = tps6586x_gpio_get; | |
307 | ||
6f9f13bf | 308 | return gpiochip_add(&tps6586x->gpio); |
c6c19332 MR |
309 | } |
310 | ||
311 | static int __remove_subdev(struct device *dev, void *unused) | |
312 | { | |
313 | platform_device_unregister(to_platform_device(dev)); | |
314 | return 0; | |
315 | } | |
316 | ||
317 | static int tps6586x_remove_subdevs(struct tps6586x *tps6586x) | |
318 | { | |
319 | return device_for_each_child(tps6586x->dev, NULL, __remove_subdev); | |
320 | } | |
321 | ||
96e824bd | 322 | static void tps6586x_irq_lock(struct irq_data *data) |
c26448c4 | 323 | { |
96e824bd | 324 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data); |
c26448c4 GK |
325 | |
326 | mutex_lock(&tps6586x->irq_lock); | |
327 | } | |
328 | ||
96e824bd | 329 | static void tps6586x_irq_enable(struct irq_data *irq_data) |
c26448c4 | 330 | { |
96e824bd MB |
331 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data); |
332 | unsigned int __irq = irq_data->irq - tps6586x->irq_base; | |
c26448c4 GK |
333 | const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq]; |
334 | ||
335 | tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask; | |
336 | tps6586x->irq_en |= (1 << __irq); | |
337 | } | |
338 | ||
96e824bd | 339 | static void tps6586x_irq_disable(struct irq_data *irq_data) |
c26448c4 | 340 | { |
96e824bd | 341 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data); |
c26448c4 | 342 | |
96e824bd | 343 | unsigned int __irq = irq_data->irq - tps6586x->irq_base; |
c26448c4 GK |
344 | const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq]; |
345 | ||
346 | tps6586x->mask_reg[data->mask_reg] |= data->mask_mask; | |
347 | tps6586x->irq_en &= ~(1 << __irq); | |
348 | } | |
349 | ||
96e824bd | 350 | static void tps6586x_irq_sync_unlock(struct irq_data *data) |
c26448c4 | 351 | { |
96e824bd | 352 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data); |
c26448c4 GK |
353 | int i; |
354 | ||
355 | for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) { | |
356 | if (tps6586x->mask_reg[i] != tps6586x->mask_cache[i]) { | |
357 | if (!WARN_ON(tps6586x_write(tps6586x->dev, | |
358 | TPS6586X_INT_MASK1 + i, | |
359 | tps6586x->mask_reg[i]))) | |
360 | tps6586x->mask_cache[i] = tps6586x->mask_reg[i]; | |
361 | } | |
362 | } | |
363 | ||
364 | mutex_unlock(&tps6586x->irq_lock); | |
365 | } | |
366 | ||
367 | static irqreturn_t tps6586x_irq(int irq, void *data) | |
368 | { | |
369 | struct tps6586x *tps6586x = data; | |
370 | u32 acks; | |
371 | int ret = 0; | |
372 | ||
373 | ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, | |
374 | sizeof(acks), (uint8_t *)&acks); | |
375 | ||
376 | if (ret < 0) { | |
377 | dev_err(tps6586x->dev, "failed to read interrupt status\n"); | |
378 | return IRQ_NONE; | |
379 | } | |
380 | ||
381 | acks = le32_to_cpu(acks); | |
382 | ||
383 | while (acks) { | |
384 | int i = __ffs(acks); | |
385 | ||
386 | if (tps6586x->irq_en & (1 << i)) | |
387 | handle_nested_irq(tps6586x->irq_base + i); | |
388 | ||
389 | acks &= ~(1 << i); | |
390 | } | |
391 | ||
392 | return IRQ_HANDLED; | |
393 | } | |
394 | ||
395 | static int __devinit tps6586x_irq_init(struct tps6586x *tps6586x, int irq, | |
396 | int irq_base) | |
397 | { | |
398 | int i, ret; | |
399 | u8 tmp[4]; | |
400 | ||
401 | if (!irq_base) { | |
402 | dev_warn(tps6586x->dev, "No interrupt support on IRQ base\n"); | |
403 | return -EINVAL; | |
404 | } | |
405 | ||
406 | mutex_init(&tps6586x->irq_lock); | |
407 | for (i = 0; i < 5; i++) { | |
408 | tps6586x->mask_cache[i] = 0xff; | |
409 | tps6586x->mask_reg[i] = 0xff; | |
410 | tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff); | |
411 | } | |
412 | ||
413 | tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp); | |
414 | ||
415 | tps6586x->irq_base = irq_base; | |
416 | ||
417 | tps6586x->irq_chip.name = "tps6586x"; | |
96e824bd MB |
418 | tps6586x->irq_chip.irq_enable = tps6586x_irq_enable; |
419 | tps6586x->irq_chip.irq_disable = tps6586x_irq_disable; | |
420 | tps6586x->irq_chip.irq_bus_lock = tps6586x_irq_lock; | |
421 | tps6586x->irq_chip.irq_bus_sync_unlock = tps6586x_irq_sync_unlock; | |
c26448c4 GK |
422 | |
423 | for (i = 0; i < ARRAY_SIZE(tps6586x_irqs); i++) { | |
424 | int __irq = i + tps6586x->irq_base; | |
d5bb1221 TG |
425 | irq_set_chip_data(__irq, tps6586x); |
426 | irq_set_chip_and_handler(__irq, &tps6586x->irq_chip, | |
c26448c4 | 427 | handle_simple_irq); |
d5bb1221 | 428 | irq_set_nested_thread(__irq, 1); |
c26448c4 GK |
429 | #ifdef CONFIG_ARM |
430 | set_irq_flags(__irq, IRQF_VALID); | |
431 | #endif | |
432 | } | |
433 | ||
434 | ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT, | |
435 | "tps6586x", tps6586x); | |
436 | ||
437 | if (!ret) { | |
438 | device_init_wakeup(tps6586x->dev, 1); | |
439 | enable_irq_wake(irq); | |
440 | } | |
441 | ||
442 | return ret; | |
443 | } | |
444 | ||
c6c19332 MR |
445 | static int __devinit tps6586x_add_subdevs(struct tps6586x *tps6586x, |
446 | struct tps6586x_platform_data *pdata) | |
447 | { | |
448 | struct tps6586x_subdev_info *subdev; | |
449 | struct platform_device *pdev; | |
450 | int i, ret = 0; | |
451 | ||
452 | for (i = 0; i < pdata->num_subdevs; i++) { | |
453 | subdev = &pdata->subdevs[i]; | |
454 | ||
455 | pdev = platform_device_alloc(subdev->name, subdev->id); | |
929980ab AL |
456 | if (!pdev) { |
457 | ret = -ENOMEM; | |
458 | goto failed; | |
459 | } | |
c6c19332 MR |
460 | |
461 | pdev->dev.parent = tps6586x->dev; | |
462 | pdev->dev.platform_data = subdev->platform_data; | |
463 | ||
464 | ret = platform_device_add(pdev); | |
929980ab AL |
465 | if (ret) { |
466 | platform_device_put(pdev); | |
c6c19332 | 467 | goto failed; |
929980ab | 468 | } |
c6c19332 MR |
469 | } |
470 | return 0; | |
471 | ||
472 | failed: | |
473 | tps6586x_remove_subdevs(tps6586x); | |
474 | return ret; | |
475 | } | |
476 | ||
477 | static int __devinit tps6586x_i2c_probe(struct i2c_client *client, | |
478 | const struct i2c_device_id *id) | |
479 | { | |
480 | struct tps6586x_platform_data *pdata = client->dev.platform_data; | |
481 | struct tps6586x *tps6586x; | |
482 | int ret; | |
483 | ||
484 | if (!pdata) { | |
485 | dev_err(&client->dev, "tps6586x requires platform data\n"); | |
486 | return -ENOTSUPP; | |
487 | } | |
488 | ||
489 | ret = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC); | |
490 | if (ret < 0) { | |
491 | dev_err(&client->dev, "Chip ID read failed: %d\n", ret); | |
492 | return -EIO; | |
493 | } | |
494 | ||
4d1cdbf6 | 495 | dev_info(&client->dev, "VERSIONCRC is %02x\n", ret); |
c6c19332 MR |
496 | |
497 | tps6586x = kzalloc(sizeof(struct tps6586x), GFP_KERNEL); | |
498 | if (tps6586x == NULL) | |
499 | return -ENOMEM; | |
500 | ||
501 | tps6586x->client = client; | |
502 | tps6586x->dev = &client->dev; | |
503 | i2c_set_clientdata(client, tps6586x); | |
504 | ||
505 | mutex_init(&tps6586x->lock); | |
506 | ||
c26448c4 GK |
507 | if (client->irq) { |
508 | ret = tps6586x_irq_init(tps6586x, client->irq, | |
509 | pdata->irq_base); | |
510 | if (ret) { | |
511 | dev_err(&client->dev, "IRQ init failed: %d\n", ret); | |
512 | goto err_irq_init; | |
513 | } | |
514 | } | |
515 | ||
6f9f13bf VP |
516 | ret = tps6586x_gpio_init(tps6586x, pdata->gpio_base); |
517 | if (ret) { | |
518 | dev_err(&client->dev, "GPIO registration failed: %d\n", ret); | |
519 | goto err_gpio_init; | |
520 | } | |
521 | ||
c6c19332 MR |
522 | ret = tps6586x_add_subdevs(tps6586x, pdata); |
523 | if (ret) { | |
524 | dev_err(&client->dev, "add devices failed: %d\n", ret); | |
525 | goto err_add_devs; | |
526 | } | |
527 | ||
c6c19332 MR |
528 | return 0; |
529 | ||
530 | err_add_devs: | |
6f9f13bf VP |
531 | if (pdata->gpio_base) { |
532 | ret = gpiochip_remove(&tps6586x->gpio); | |
533 | if (ret) | |
534 | dev_err(&client->dev, "Can't remove gpio chip: %d\n", | |
535 | ret); | |
536 | } | |
537 | err_gpio_init: | |
c26448c4 GK |
538 | if (client->irq) |
539 | free_irq(client->irq, tps6586x); | |
540 | err_irq_init: | |
c6c19332 MR |
541 | kfree(tps6586x); |
542 | return ret; | |
543 | } | |
544 | ||
545 | static int __devexit tps6586x_i2c_remove(struct i2c_client *client) | |
546 | { | |
4b751cf5 AL |
547 | struct tps6586x *tps6586x = i2c_get_clientdata(client); |
548 | struct tps6586x_platform_data *pdata = client->dev.platform_data; | |
549 | int ret; | |
550 | ||
c26448c4 GK |
551 | if (client->irq) |
552 | free_irq(client->irq, tps6586x); | |
553 | ||
4b751cf5 AL |
554 | if (pdata->gpio_base) { |
555 | ret = gpiochip_remove(&tps6586x->gpio); | |
556 | if (ret) | |
557 | dev_err(&client->dev, "Can't remove gpio chip: %d\n", | |
558 | ret); | |
559 | } | |
560 | ||
561 | tps6586x_remove_subdevs(tps6586x); | |
562 | kfree(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, | |
576 | }, | |
577 | .probe = tps6586x_i2c_probe, | |
578 | .remove = __devexit_p(tps6586x_i2c_remove), | |
579 | .id_table = tps6586x_id_table, | |
580 | }; | |
581 | ||
582 | static int __init tps6586x_init(void) | |
583 | { | |
584 | return i2c_add_driver(&tps6586x_driver); | |
585 | } | |
586 | subsys_initcall(tps6586x_init); | |
587 | ||
588 | static void __exit tps6586x_exit(void) | |
589 | { | |
590 | i2c_del_driver(&tps6586x_driver); | |
591 | } | |
592 | module_exit(tps6586x_exit); | |
593 | ||
594 | MODULE_DESCRIPTION("TPS6586X core driver"); | |
595 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); | |
596 | MODULE_LICENSE("GPL"); |