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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> | |
1176b5be | 24 | #include <linux/err.h> |
c6c19332 | 25 | #include <linux/i2c.h> |
1176b5be | 26 | #include <linux/regmap.h> |
62f6b087 | 27 | #include <linux/regulator/of_regulator.h> |
9394b80c | 28 | #include <linux/regulator/machine.h> |
c6c19332 MR |
29 | |
30 | #include <linux/mfd/core.h> | |
31 | #include <linux/mfd/tps6586x.h> | |
32 | ||
004c15a6 BH |
33 | #define TPS6586X_SUPPLYENE 0x14 |
34 | #define EXITSLREQ_BIT BIT(1) | |
35 | #define SLEEP_MODE_BIT BIT(3) | |
36 | ||
c26448c4 GK |
37 | /* interrupt control registers */ |
38 | #define TPS6586X_INT_ACK1 0xb5 | |
39 | #define TPS6586X_INT_ACK2 0xb6 | |
40 | #define TPS6586X_INT_ACK3 0xb7 | |
41 | #define TPS6586X_INT_ACK4 0xb8 | |
42 | ||
43 | /* interrupt mask registers */ | |
44 | #define TPS6586X_INT_MASK1 0xb0 | |
45 | #define TPS6586X_INT_MASK2 0xb1 | |
46 | #define TPS6586X_INT_MASK3 0xb2 | |
47 | #define TPS6586X_INT_MASK4 0xb3 | |
48 | #define TPS6586X_INT_MASK5 0xb4 | |
49 | ||
c6c19332 MR |
50 | /* device id */ |
51 | #define TPS6586X_VERSIONCRC 0xcd | |
c6c19332 | 52 | |
1176b5be LD |
53 | /* Maximum register */ |
54 | #define TPS6586X_MAX_REGISTER (TPS6586X_VERSIONCRC + 1) | |
55 | ||
c26448c4 GK |
56 | struct tps6586x_irq_data { |
57 | u8 mask_reg; | |
58 | u8 mask_mask; | |
59 | }; | |
60 | ||
61 | #define TPS6586X_IRQ(_reg, _mask) \ | |
62 | { \ | |
63 | .mask_reg = (_reg) - TPS6586X_INT_MASK1, \ | |
64 | .mask_mask = (_mask), \ | |
65 | } | |
66 | ||
67 | static const struct tps6586x_irq_data tps6586x_irqs[] = { | |
68 | [TPS6586X_INT_PLDO_0] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 0), | |
69 | [TPS6586X_INT_PLDO_1] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 1), | |
70 | [TPS6586X_INT_PLDO_2] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 2), | |
71 | [TPS6586X_INT_PLDO_3] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 3), | |
72 | [TPS6586X_INT_PLDO_4] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 4), | |
73 | [TPS6586X_INT_PLDO_5] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 5), | |
74 | [TPS6586X_INT_PLDO_6] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 6), | |
75 | [TPS6586X_INT_PLDO_7] = TPS6586X_IRQ(TPS6586X_INT_MASK1, 1 << 7), | |
76 | [TPS6586X_INT_COMP_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 0), | |
77 | [TPS6586X_INT_ADC] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 1), | |
78 | [TPS6586X_INT_PLDO_8] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 2), | |
79 | [TPS6586X_INT_PLDO_9] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 3), | |
80 | [TPS6586X_INT_PSM_0] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 4), | |
81 | [TPS6586X_INT_PSM_1] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 5), | |
82 | [TPS6586X_INT_PSM_2] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 6), | |
83 | [TPS6586X_INT_PSM_3] = TPS6586X_IRQ(TPS6586X_INT_MASK2, 1 << 7), | |
84 | [TPS6586X_INT_RTC_ALM1] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 4), | |
85 | [TPS6586X_INT_ACUSB_OVP] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 0x03), | |
86 | [TPS6586X_INT_USB_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 2), | |
87 | [TPS6586X_INT_AC_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 3), | |
88 | [TPS6586X_INT_BAT_DET] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 1 << 0), | |
89 | [TPS6586X_INT_CHG_STAT] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 0xfc), | |
90 | [TPS6586X_INT_CHG_TEMP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0x06), | |
91 | [TPS6586X_INT_PP] = TPS6586X_IRQ(TPS6586X_INT_MASK3, 0xf0), | |
92 | [TPS6586X_INT_RESUME] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 5), | |
93 | [TPS6586X_INT_LOW_SYS] = TPS6586X_IRQ(TPS6586X_INT_MASK5, 1 << 6), | |
94 | [TPS6586X_INT_RTC_ALM2] = TPS6586X_IRQ(TPS6586X_INT_MASK4, 1 << 1), | |
95 | }; | |
96 | ||
7a7487cb LD |
97 | static struct mfd_cell tps6586x_cell[] = { |
98 | { | |
99 | .name = "tps6586x-gpio", | |
100 | }, | |
101 | { | |
102 | .name = "tps6586x-rtc", | |
103 | }, | |
104 | { | |
105 | .name = "tps6586x-onkey", | |
106 | }, | |
107 | }; | |
108 | ||
c6c19332 | 109 | struct tps6586x { |
c6c19332 MR |
110 | struct device *dev; |
111 | struct i2c_client *client; | |
1176b5be | 112 | struct regmap *regmap; |
c6c19332 | 113 | |
c26448c4 GK |
114 | struct irq_chip irq_chip; |
115 | struct mutex irq_lock; | |
116 | int irq_base; | |
117 | u32 irq_en; | |
c26448c4 | 118 | u8 mask_reg[5]; |
c6c19332 MR |
119 | }; |
120 | ||
1176b5be | 121 | static inline struct tps6586x *dev_to_tps6586x(struct device *dev) |
c6c19332 | 122 | { |
1176b5be | 123 | return i2c_get_clientdata(to_i2c_client(dev)); |
c6c19332 MR |
124 | } |
125 | ||
126 | int tps6586x_write(struct device *dev, int reg, uint8_t val) | |
127 | { | |
1176b5be LD |
128 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
129 | ||
130 | return regmap_write(tps6586x->regmap, reg, val); | |
c6c19332 MR |
131 | } |
132 | EXPORT_SYMBOL_GPL(tps6586x_write); | |
133 | ||
134 | int tps6586x_writes(struct device *dev, int reg, int len, uint8_t *val) | |
135 | { | |
1176b5be LD |
136 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
137 | ||
138 | return regmap_bulk_write(tps6586x->regmap, reg, val, len); | |
c6c19332 MR |
139 | } |
140 | EXPORT_SYMBOL_GPL(tps6586x_writes); | |
141 | ||
142 | int tps6586x_read(struct device *dev, int reg, uint8_t *val) | |
143 | { | |
1176b5be LD |
144 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
145 | unsigned int rval; | |
146 | int ret; | |
147 | ||
148 | ret = regmap_read(tps6586x->regmap, reg, &rval); | |
149 | if (!ret) | |
150 | *val = rval; | |
151 | return ret; | |
c6c19332 MR |
152 | } |
153 | EXPORT_SYMBOL_GPL(tps6586x_read); | |
154 | ||
155 | int tps6586x_reads(struct device *dev, int reg, int len, uint8_t *val) | |
156 | { | |
1176b5be LD |
157 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
158 | ||
159 | return regmap_bulk_read(tps6586x->regmap, reg, val, len); | |
c6c19332 MR |
160 | } |
161 | EXPORT_SYMBOL_GPL(tps6586x_reads); | |
162 | ||
163 | int tps6586x_set_bits(struct device *dev, int reg, uint8_t bit_mask) | |
164 | { | |
1176b5be | 165 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
c6c19332 | 166 | |
1176b5be | 167 | return regmap_update_bits(tps6586x->regmap, reg, bit_mask, bit_mask); |
c6c19332 MR |
168 | } |
169 | EXPORT_SYMBOL_GPL(tps6586x_set_bits); | |
170 | ||
171 | int tps6586x_clr_bits(struct device *dev, int reg, uint8_t bit_mask) | |
172 | { | |
1176b5be | 173 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
c6c19332 | 174 | |
1176b5be | 175 | return regmap_update_bits(tps6586x->regmap, reg, bit_mask, 0); |
c6c19332 MR |
176 | } |
177 | EXPORT_SYMBOL_GPL(tps6586x_clr_bits); | |
178 | ||
179 | int tps6586x_update(struct device *dev, int reg, uint8_t val, uint8_t mask) | |
180 | { | |
1176b5be | 181 | struct tps6586x *tps6586x = dev_to_tps6586x(dev); |
c6c19332 | 182 | |
1176b5be | 183 | return regmap_update_bits(tps6586x->regmap, reg, mask, val); |
c6c19332 MR |
184 | } |
185 | EXPORT_SYMBOL_GPL(tps6586x_update); | |
186 | ||
c6c19332 MR |
187 | static int __remove_subdev(struct device *dev, void *unused) |
188 | { | |
189 | platform_device_unregister(to_platform_device(dev)); | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static int tps6586x_remove_subdevs(struct tps6586x *tps6586x) | |
194 | { | |
195 | return device_for_each_child(tps6586x->dev, NULL, __remove_subdev); | |
196 | } | |
197 | ||
96e824bd | 198 | static void tps6586x_irq_lock(struct irq_data *data) |
c26448c4 | 199 | { |
96e824bd | 200 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data); |
c26448c4 GK |
201 | |
202 | mutex_lock(&tps6586x->irq_lock); | |
203 | } | |
204 | ||
96e824bd | 205 | static void tps6586x_irq_enable(struct irq_data *irq_data) |
c26448c4 | 206 | { |
96e824bd MB |
207 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data); |
208 | unsigned int __irq = irq_data->irq - tps6586x->irq_base; | |
c26448c4 GK |
209 | const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq]; |
210 | ||
211 | tps6586x->mask_reg[data->mask_reg] &= ~data->mask_mask; | |
212 | tps6586x->irq_en |= (1 << __irq); | |
213 | } | |
214 | ||
96e824bd | 215 | static void tps6586x_irq_disable(struct irq_data *irq_data) |
c26448c4 | 216 | { |
96e824bd | 217 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(irq_data); |
c26448c4 | 218 | |
96e824bd | 219 | unsigned int __irq = irq_data->irq - tps6586x->irq_base; |
c26448c4 GK |
220 | const struct tps6586x_irq_data *data = &tps6586x_irqs[__irq]; |
221 | ||
222 | tps6586x->mask_reg[data->mask_reg] |= data->mask_mask; | |
223 | tps6586x->irq_en &= ~(1 << __irq); | |
224 | } | |
225 | ||
96e824bd | 226 | static void tps6586x_irq_sync_unlock(struct irq_data *data) |
c26448c4 | 227 | { |
96e824bd | 228 | struct tps6586x *tps6586x = irq_data_get_irq_chip_data(data); |
c26448c4 GK |
229 | int i; |
230 | ||
231 | for (i = 0; i < ARRAY_SIZE(tps6586x->mask_reg); i++) { | |
75edd5af LD |
232 | int ret; |
233 | ret = tps6586x_write(tps6586x->dev, | |
234 | TPS6586X_INT_MASK1 + i, | |
235 | tps6586x->mask_reg[i]); | |
236 | WARN_ON(ret); | |
c26448c4 GK |
237 | } |
238 | ||
239 | mutex_unlock(&tps6586x->irq_lock); | |
240 | } | |
241 | ||
242 | static irqreturn_t tps6586x_irq(int irq, void *data) | |
243 | { | |
244 | struct tps6586x *tps6586x = data; | |
245 | u32 acks; | |
246 | int ret = 0; | |
247 | ||
248 | ret = tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, | |
249 | sizeof(acks), (uint8_t *)&acks); | |
250 | ||
251 | if (ret < 0) { | |
252 | dev_err(tps6586x->dev, "failed to read interrupt status\n"); | |
253 | return IRQ_NONE; | |
254 | } | |
255 | ||
256 | acks = le32_to_cpu(acks); | |
257 | ||
258 | while (acks) { | |
259 | int i = __ffs(acks); | |
260 | ||
261 | if (tps6586x->irq_en & (1 << i)) | |
262 | handle_nested_irq(tps6586x->irq_base + i); | |
263 | ||
264 | acks &= ~(1 << i); | |
265 | } | |
266 | ||
267 | return IRQ_HANDLED; | |
268 | } | |
269 | ||
270 | static int __devinit tps6586x_irq_init(struct tps6586x *tps6586x, int irq, | |
271 | int irq_base) | |
272 | { | |
273 | int i, ret; | |
274 | u8 tmp[4]; | |
275 | ||
276 | if (!irq_base) { | |
277 | dev_warn(tps6586x->dev, "No interrupt support on IRQ base\n"); | |
278 | return -EINVAL; | |
279 | } | |
280 | ||
281 | mutex_init(&tps6586x->irq_lock); | |
282 | for (i = 0; i < 5; i++) { | |
c26448c4 GK |
283 | tps6586x->mask_reg[i] = 0xff; |
284 | tps6586x_write(tps6586x->dev, TPS6586X_INT_MASK1 + i, 0xff); | |
285 | } | |
286 | ||
287 | tps6586x_reads(tps6586x->dev, TPS6586X_INT_ACK1, sizeof(tmp), tmp); | |
288 | ||
289 | tps6586x->irq_base = irq_base; | |
290 | ||
291 | tps6586x->irq_chip.name = "tps6586x"; | |
96e824bd MB |
292 | tps6586x->irq_chip.irq_enable = tps6586x_irq_enable; |
293 | tps6586x->irq_chip.irq_disable = tps6586x_irq_disable; | |
294 | tps6586x->irq_chip.irq_bus_lock = tps6586x_irq_lock; | |
295 | tps6586x->irq_chip.irq_bus_sync_unlock = tps6586x_irq_sync_unlock; | |
c26448c4 GK |
296 | |
297 | for (i = 0; i < ARRAY_SIZE(tps6586x_irqs); i++) { | |
298 | int __irq = i + tps6586x->irq_base; | |
d5bb1221 TG |
299 | irq_set_chip_data(__irq, tps6586x); |
300 | irq_set_chip_and_handler(__irq, &tps6586x->irq_chip, | |
c26448c4 | 301 | handle_simple_irq); |
d5bb1221 | 302 | irq_set_nested_thread(__irq, 1); |
c26448c4 GK |
303 | #ifdef CONFIG_ARM |
304 | set_irq_flags(__irq, IRQF_VALID); | |
305 | #endif | |
306 | } | |
307 | ||
308 | ret = request_threaded_irq(irq, NULL, tps6586x_irq, IRQF_ONESHOT, | |
309 | "tps6586x", tps6586x); | |
310 | ||
311 | if (!ret) { | |
312 | device_init_wakeup(tps6586x->dev, 1); | |
313 | enable_irq_wake(irq); | |
314 | } | |
315 | ||
316 | return ret; | |
317 | } | |
318 | ||
c6c19332 MR |
319 | static int __devinit tps6586x_add_subdevs(struct tps6586x *tps6586x, |
320 | struct tps6586x_platform_data *pdata) | |
321 | { | |
322 | struct tps6586x_subdev_info *subdev; | |
323 | struct platform_device *pdev; | |
324 | int i, ret = 0; | |
325 | ||
326 | for (i = 0; i < pdata->num_subdevs; i++) { | |
327 | subdev = &pdata->subdevs[i]; | |
328 | ||
329 | pdev = platform_device_alloc(subdev->name, subdev->id); | |
929980ab AL |
330 | if (!pdev) { |
331 | ret = -ENOMEM; | |
332 | goto failed; | |
333 | } | |
c6c19332 MR |
334 | |
335 | pdev->dev.parent = tps6586x->dev; | |
336 | pdev->dev.platform_data = subdev->platform_data; | |
62f6b087 | 337 | pdev->dev.of_node = subdev->of_node; |
c6c19332 MR |
338 | |
339 | ret = platform_device_add(pdev); | |
929980ab AL |
340 | if (ret) { |
341 | platform_device_put(pdev); | |
c6c19332 | 342 | goto failed; |
929980ab | 343 | } |
c6c19332 MR |
344 | } |
345 | return 0; | |
346 | ||
347 | failed: | |
348 | tps6586x_remove_subdevs(tps6586x); | |
349 | return ret; | |
350 | } | |
351 | ||
62f6b087 TR |
352 | #ifdef CONFIG_OF |
353 | static struct of_regulator_match tps6586x_matches[] = { | |
9394b80c | 354 | { .name = "sys", .driver_data = (void *)TPS6586X_ID_SYS }, |
62f6b087 TR |
355 | { .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 }, |
356 | { .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 }, | |
357 | { .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 }, | |
358 | { .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 }, | |
359 | { .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 }, | |
360 | { .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 }, | |
361 | { .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 }, | |
362 | { .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 }, | |
363 | { .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 }, | |
364 | { .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 }, | |
365 | { .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 }, | |
366 | { .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 }, | |
367 | { .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 }, | |
368 | { .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC }, | |
369 | }; | |
370 | ||
371 | static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client) | |
372 | { | |
373 | const unsigned int num = ARRAY_SIZE(tps6586x_matches); | |
374 | struct device_node *np = client->dev.of_node; | |
375 | struct tps6586x_platform_data *pdata; | |
376 | struct tps6586x_subdev_info *devs; | |
377 | struct device_node *regs; | |
9394b80c | 378 | const char *sys_rail_name = NULL; |
62f6b087 TR |
379 | unsigned int count; |
380 | unsigned int i, j; | |
381 | int err; | |
382 | ||
383 | regs = of_find_node_by_name(np, "regulators"); | |
384 | if (!regs) | |
385 | return NULL; | |
386 | ||
387 | err = of_regulator_match(&client->dev, regs, tps6586x_matches, num); | |
388 | if (err < 0) { | |
389 | of_node_put(regs); | |
390 | return NULL; | |
391 | } | |
392 | ||
393 | of_node_put(regs); | |
394 | count = err; | |
395 | ||
396 | devs = devm_kzalloc(&client->dev, count * sizeof(*devs), GFP_KERNEL); | |
397 | if (!devs) | |
398 | return NULL; | |
399 | ||
400 | for (i = 0, j = 0; i < num && j < count; i++) { | |
9394b80c LD |
401 | struct regulator_init_data *reg_idata; |
402 | ||
62f6b087 TR |
403 | if (!tps6586x_matches[i].init_data) |
404 | continue; | |
405 | ||
9394b80c | 406 | reg_idata = tps6586x_matches[i].init_data; |
62f6b087 TR |
407 | devs[j].name = "tps6586x-regulator"; |
408 | devs[j].platform_data = tps6586x_matches[i].init_data; | |
409 | devs[j].id = (int)tps6586x_matches[i].driver_data; | |
9394b80c LD |
410 | if (devs[j].id == TPS6586X_ID_SYS) |
411 | sys_rail_name = reg_idata->constraints.name; | |
412 | ||
413 | if ((devs[j].id == TPS6586X_ID_LDO_5) || | |
414 | (devs[j].id == TPS6586X_ID_LDO_RTC)) | |
415 | reg_idata->supply_regulator = sys_rail_name; | |
416 | ||
62f6b087 TR |
417 | devs[j].of_node = tps6586x_matches[i].of_node; |
418 | j++; | |
419 | } | |
420 | ||
421 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
422 | if (!pdata) | |
423 | return NULL; | |
424 | ||
425 | pdata->num_subdevs = count; | |
426 | pdata->subdevs = devs; | |
427 | pdata->gpio_base = -1; | |
428 | pdata->irq_base = -1; | |
004c15a6 | 429 | pdata->pm_off = of_property_read_bool(np, "ti,system-power-controller"); |
62f6b087 TR |
430 | |
431 | return pdata; | |
432 | } | |
433 | ||
434 | static struct of_device_id tps6586x_of_match[] = { | |
435 | { .compatible = "ti,tps6586x", }, | |
436 | { }, | |
437 | }; | |
438 | #else | |
439 | static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client) | |
440 | { | |
441 | return NULL; | |
442 | } | |
443 | #endif | |
444 | ||
75edd5af LD |
445 | static bool is_volatile_reg(struct device *dev, unsigned int reg) |
446 | { | |
447 | /* Cache all interrupt mask register */ | |
448 | if ((reg >= TPS6586X_INT_MASK1) && (reg <= TPS6586X_INT_MASK5)) | |
449 | return false; | |
450 | ||
451 | return true; | |
452 | } | |
453 | ||
1176b5be LD |
454 | static const struct regmap_config tps6586x_regmap_config = { |
455 | .reg_bits = 8, | |
456 | .val_bits = 8, | |
457 | .max_register = TPS6586X_MAX_REGISTER - 1, | |
75edd5af LD |
458 | .volatile_reg = is_volatile_reg, |
459 | .cache_type = REGCACHE_RBTREE, | |
1176b5be LD |
460 | }; |
461 | ||
004c15a6 BH |
462 | static struct device *tps6586x_dev; |
463 | static void tps6586x_power_off(void) | |
464 | { | |
465 | if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT)) | |
466 | return; | |
467 | ||
468 | tps6586x_set_bits(tps6586x_dev, TPS6586X_SUPPLYENE, SLEEP_MODE_BIT); | |
469 | } | |
470 | ||
c6c19332 MR |
471 | static int __devinit tps6586x_i2c_probe(struct i2c_client *client, |
472 | const struct i2c_device_id *id) | |
473 | { | |
474 | struct tps6586x_platform_data *pdata = client->dev.platform_data; | |
475 | struct tps6586x *tps6586x; | |
476 | int ret; | |
477 | ||
62f6b087 TR |
478 | if (!pdata && client->dev.of_node) |
479 | pdata = tps6586x_parse_dt(client); | |
480 | ||
c6c19332 MR |
481 | if (!pdata) { |
482 | dev_err(&client->dev, "tps6586x requires platform data\n"); | |
483 | return -ENOTSUPP; | |
484 | } | |
485 | ||
486 | ret = i2c_smbus_read_byte_data(client, TPS6586X_VERSIONCRC); | |
487 | if (ret < 0) { | |
488 | dev_err(&client->dev, "Chip ID read failed: %d\n", ret); | |
489 | return -EIO; | |
490 | } | |
491 | ||
4d1cdbf6 | 492 | dev_info(&client->dev, "VERSIONCRC is %02x\n", ret); |
c6c19332 | 493 | |
b6719412 LD |
494 | tps6586x = devm_kzalloc(&client->dev, sizeof(*tps6586x), GFP_KERNEL); |
495 | if (tps6586x == NULL) { | |
496 | dev_err(&client->dev, "memory for tps6586x alloc failed\n"); | |
c6c19332 | 497 | return -ENOMEM; |
b6719412 | 498 | } |
c6c19332 MR |
499 | |
500 | tps6586x->client = client; | |
501 | tps6586x->dev = &client->dev; | |
502 | i2c_set_clientdata(client, tps6586x); | |
503 | ||
1176b5be LD |
504 | tps6586x->regmap = devm_regmap_init_i2c(client, |
505 | &tps6586x_regmap_config); | |
506 | if (IS_ERR(tps6586x->regmap)) { | |
507 | ret = PTR_ERR(tps6586x->regmap); | |
508 | dev_err(&client->dev, "regmap init failed: %d\n", ret); | |
509 | return ret; | |
510 | } | |
511 | ||
c6c19332 | 512 | |
c26448c4 GK |
513 | if (client->irq) { |
514 | ret = tps6586x_irq_init(tps6586x, client->irq, | |
515 | pdata->irq_base); | |
516 | if (ret) { | |
517 | dev_err(&client->dev, "IRQ init failed: %d\n", ret); | |
b6719412 | 518 | return ret; |
c26448c4 GK |
519 | } |
520 | } | |
521 | ||
7a7487cb | 522 | ret = mfd_add_devices(tps6586x->dev, -1, |
0848c94f MB |
523 | tps6586x_cell, ARRAY_SIZE(tps6586x_cell), |
524 | NULL, 0, NULL); | |
7a7487cb LD |
525 | if (ret < 0) { |
526 | dev_err(&client->dev, "mfd_add_devices failed: %d\n", ret); | |
527 | goto err_mfd_add; | |
6f9f13bf VP |
528 | } |
529 | ||
c6c19332 MR |
530 | ret = tps6586x_add_subdevs(tps6586x, pdata); |
531 | if (ret) { | |
532 | dev_err(&client->dev, "add devices failed: %d\n", ret); | |
533 | goto err_add_devs; | |
534 | } | |
535 | ||
004c15a6 BH |
536 | if (pdata->pm_off && !pm_power_off) { |
537 | tps6586x_dev = &client->dev; | |
538 | pm_power_off = tps6586x_power_off; | |
539 | } | |
540 | ||
c6c19332 MR |
541 | return 0; |
542 | ||
543 | err_add_devs: | |
7a7487cb LD |
544 | mfd_remove_devices(tps6586x->dev); |
545 | err_mfd_add: | |
c26448c4 GK |
546 | if (client->irq) |
547 | free_irq(client->irq, tps6586x); | |
c6c19332 MR |
548 | return ret; |
549 | } | |
550 | ||
551 | static int __devexit tps6586x_i2c_remove(struct i2c_client *client) | |
552 | { | |
4b751cf5 | 553 | struct tps6586x *tps6586x = i2c_get_clientdata(client); |
4b751cf5 | 554 | |
7a7487cb LD |
555 | tps6586x_remove_subdevs(tps6586x); |
556 | mfd_remove_devices(tps6586x->dev); | |
c26448c4 GK |
557 | if (client->irq) |
558 | free_irq(client->irq, tps6586x); | |
c6c19332 MR |
559 | return 0; |
560 | } | |
561 | ||
562 | static const struct i2c_device_id tps6586x_id_table[] = { | |
563 | { "tps6586x", 0 }, | |
564 | { }, | |
565 | }; | |
566 | MODULE_DEVICE_TABLE(i2c, tps6586x_id_table); | |
567 | ||
568 | static struct i2c_driver tps6586x_driver = { | |
569 | .driver = { | |
570 | .name = "tps6586x", | |
571 | .owner = THIS_MODULE, | |
62f6b087 | 572 | .of_match_table = of_match_ptr(tps6586x_of_match), |
c6c19332 MR |
573 | }, |
574 | .probe = tps6586x_i2c_probe, | |
84449216 | 575 | .remove = tps6586x_i2c_remove, |
c6c19332 MR |
576 | .id_table = tps6586x_id_table, |
577 | }; | |
578 | ||
579 | static int __init tps6586x_init(void) | |
580 | { | |
581 | return i2c_add_driver(&tps6586x_driver); | |
582 | } | |
583 | subsys_initcall(tps6586x_init); | |
584 | ||
585 | static void __exit tps6586x_exit(void) | |
586 | { | |
587 | i2c_del_driver(&tps6586x_driver); | |
588 | } | |
589 | module_exit(tps6586x_exit); | |
590 | ||
591 | MODULE_DESCRIPTION("TPS6586X core driver"); | |
592 | MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); | |
593 | MODULE_LICENSE("GPL"); |