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1 | /* |
2 | * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM |
3 | * and audio CODEC devices |
4 | * |
5 | * Copyright (C) 2005-2006 Texas Instruments, Inc. |
6 | * |
7 | * Modifications to defer interrupt handling to a kernel thread: |
8 | * Copyright (C) 2006 MontaVista Software, Inc. |
9 | * |
10 | * Based on tlv320aic23.c: |
11 | * Copyright (c) by Kai Svahn <kai.svahn@nokia.com> |
12 | * |
13 | * Code cleanup and modifications to IRQ handler. |
14 | * by syed khasim <x0khasim@ti.com> |
15 | * |
16 | * This program is free software; you can redistribute it and/or modify |
17 | * it under the terms of the GNU General Public License as published by |
18 | * the Free Software Foundation; either version 2 of the License, or |
19 | * (at your option) any later version. |
20 | * |
21 | * This program is distributed in the hope that it will be useful, |
22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
24 | * GNU General Public License for more details. |
25 | * |
26 | * You should have received a copy of the GNU General Public License |
27 | * along with this program; if not, write to the Free Software |
28 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
29 | */ |
30 | |
31 | #include <linux/init.h> |
32 | #include <linux/mutex.h> |
33 | #include <linux/module.h> |
34 | #include <linux/platform_device.h> |
35 | #include <linux/regmap.h> |
36 | #include <linux/clk.h> |
37 | #include <linux/err.h> |
38 | #include <linux/device.h> |
39 | #include <linux/of.h> |
40 | #include <linux/of_irq.h> |
41 | #include <linux/of_platform.h> |
42 | #include <linux/irq.h> |
43 | #include <linux/irqdomain.h> |
44 | |
45 | #include <linux/regulator/machine.h> |
46 | |
47 | #include <linux/i2c.h> |
48 | #include <linux/i2c/twl.h> |
49 | |
50 | #include "twl-core.h" |
51 | |
52 | /* |
53 | * The TWL4030 "Triton 2" is one of a family of a multi-function "Power |
54 | * Management and System Companion Device" chips originally designed for |
55 | * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, |
56 | * often at around 3 Mbit/sec, including for interrupt handling. |
57 | * |
58 | * This driver core provides genirq support for the interrupts emitted, |
59 | * by the various modules, and exports register access primitives. |
60 | * |
61 | * FIXME this driver currently requires use of the first interrupt line |
62 | * (and associated registers). |
63 | */ |
64 | |
65 | #define DRIVER_NAME "twl" |
66 | |
67 | /* Triton Core internal information (BEGIN) */ |
68 | |
69 | /* Base Address defns for twl4030_map[] */ |
70 | |
71 | /* subchip/slave 0 - USB ID */ |
72 | #define TWL4030_BASEADD_USB 0x0000 |
73 | |
74 | /* subchip/slave 1 - AUD ID */ |
75 | #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 |
76 | #define TWL4030_BASEADD_GPIO 0x0098 |
77 | #define TWL4030_BASEADD_INTBR 0x0085 |
78 | #define TWL4030_BASEADD_PIH 0x0080 |
79 | #define TWL4030_BASEADD_TEST 0x004C |
80 | |
81 | /* subchip/slave 2 - AUX ID */ |
82 | #define TWL4030_BASEADD_INTERRUPTS 0x00B9 |
83 | #define TWL4030_BASEADD_LED 0x00EE |
84 | #define TWL4030_BASEADD_MADC 0x0000 |
85 | #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 |
86 | #define TWL4030_BASEADD_PRECHARGE 0x00AA |
87 | #define TWL4030_BASEADD_PWM 0x00F8 |
88 | #define TWL4030_BASEADD_KEYPAD 0x00D2 |
89 | |
90 | #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ |
91 | #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's |
92 | one */ |
93 | |
94 | /* subchip/slave 3 - POWER ID */ |
95 | #define TWL4030_BASEADD_BACKUP 0x0014 |
96 | #define TWL4030_BASEADD_INT 0x002E |
97 | #define TWL4030_BASEADD_PM_MASTER 0x0036 |
98 | #define TWL4030_BASEADD_PM_RECEIVER 0x005B |
99 | #define TWL4030_BASEADD_RTC 0x001C |
100 | #define TWL4030_BASEADD_SECURED_REG 0x0000 |
101 | |
102 | /* Triton Core internal information (END) */ |
103 | |
104 | |
105 | /* subchip/slave 0 0x48 - POWER */ |
106 | #define TWL6030_BASEADD_RTC 0x0000 |
107 | #define TWL6030_BASEADD_SECURED_REG 0x0017 |
108 | #define TWL6030_BASEADD_PM_MASTER 0x001F |
109 | #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ |
110 | #define TWL6030_BASEADD_PM_MISC 0x00E2 |
111 | #define TWL6030_BASEADD_PM_PUPD 0x00F0 |
112 | |
113 | /* subchip/slave 1 0x49 - FEATURE */ |
114 | #define TWL6030_BASEADD_USB 0x0000 |
115 | #define TWL6030_BASEADD_GPADC_CTRL 0x002E |
116 | #define TWL6030_BASEADD_AUX 0x0090 |
117 | #define TWL6030_BASEADD_PWM 0x00BA |
118 | #define TWL6030_BASEADD_GASGAUGE 0x00C0 |
119 | #define TWL6030_BASEADD_PIH 0x00D0 |
120 | #define TWL6030_BASEADD_CHARGER 0x00E0 |
121 | #define TWL6025_BASEADD_CHARGER 0x00DA |
122 | #define TWL6030_BASEADD_LED 0x00F4 |
123 | |
124 | /* subchip/slave 2 0x4A - DFT */ |
125 | #define TWL6030_BASEADD_DIEID 0x00C0 |
126 | |
127 | /* subchip/slave 3 0x4B - AUDIO */ |
128 | #define TWL6030_BASEADD_AUDIO 0x0000 |
129 | #define TWL6030_BASEADD_RSV 0x0000 |
130 | #define TWL6030_BASEADD_ZERO 0x0000 |
131 | |
132 | /* Few power values */ |
133 | #define R_CFG_BOOT 0x05 |
134 | |
135 | /* some fields in R_CFG_BOOT */ |
136 | #define HFCLK_FREQ_19p2_MHZ (1 << 0) |
137 | #define HFCLK_FREQ_26_MHZ (2 << 0) |
138 | #define HFCLK_FREQ_38p4_MHZ (3 << 0) |
139 | #define HIGH_PERF_SQ (1 << 3) |
140 | #define CK32K_LOWPWR_EN (1 << 7) |
141 | |
142 | /*----------------------------------------------------------------------*/ |
143 | |
144 | /* Structure for each TWL4030/TWL6030 Slave */ |
145 | struct twl_client { |
146 | struct i2c_client *client; |
147 | struct regmap *regmap; |
148 | }; |
149 | |
150 | /* mapping the module id to slave id and base address */ |
151 | struct twl_mapping { |
152 | unsigned char sid; /* Slave ID */ |
153 | unsigned char base; /* base address */ |
154 | }; |
155 | |
156 | struct twl_private { |
157 | bool ready; /* The core driver is ready to be used */ |
158 | u32 twl_idcode; /* TWL IDCODE Register value */ |
159 | unsigned int twl_id; |
160 | |
161 | struct twl_mapping *twl_map; |
162 | struct twl_client *twl_modules; |
163 | }; |
164 | |
165 | static struct twl_private *twl_priv; |
166 | |
167 | static struct twl_mapping twl4030_map[] = { |
168 | /* |
169 | * NOTE: don't change this table without updating the |
170 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
171 | * so they continue to match the order in this table. |
172 | */ |
173 | |
174 | /* Common IPs */ |
175 | { 0, TWL4030_BASEADD_USB }, |
176 | { 1, TWL4030_BASEADD_PIH }, |
177 | { 2, TWL4030_BASEADD_MAIN_CHARGE }, |
178 | { 3, TWL4030_BASEADD_PM_MASTER }, |
179 | { 3, TWL4030_BASEADD_PM_RECEIVER }, |
180 | |
181 | { 3, TWL4030_BASEADD_RTC }, |
182 | { 2, TWL4030_BASEADD_PWM }, |
183 | { 2, TWL4030_BASEADD_LED }, |
184 | { 3, TWL4030_BASEADD_SECURED_REG }, |
185 | |
186 | /* TWL4030 specific IPs */ |
187 | { 1, TWL4030_BASEADD_AUDIO_VOICE }, |
188 | { 1, TWL4030_BASEADD_GPIO }, |
189 | { 1, TWL4030_BASEADD_INTBR }, |
190 | { 1, TWL4030_BASEADD_TEST }, |
191 | { 2, TWL4030_BASEADD_KEYPAD }, |
192 | |
193 | { 2, TWL4030_BASEADD_MADC }, |
194 | { 2, TWL4030_BASEADD_INTERRUPTS }, |
195 | { 2, TWL4030_BASEADD_PRECHARGE }, |
196 | { 3, TWL4030_BASEADD_BACKUP }, |
197 | { 3, TWL4030_BASEADD_INT }, |
198 | |
199 | { 2, TWL5031_BASEADD_ACCESSORY }, |
200 | { 2, TWL5031_BASEADD_INTERRUPTS }, |
201 | }; |
202 | |
203 | static struct regmap_config twl4030_regmap_config[4] = { |
204 | { |
205 | /* Address 0x48 */ |
206 | .reg_bits = 8, |
207 | .val_bits = 8, |
208 | .max_register = 0xff, |
209 | }, |
210 | { |
211 | /* Address 0x49 */ |
212 | .reg_bits = 8, |
213 | .val_bits = 8, |
214 | .max_register = 0xff, |
215 | }, |
216 | { |
217 | /* Address 0x4a */ |
218 | .reg_bits = 8, |
219 | .val_bits = 8, |
220 | .max_register = 0xff, |
221 | }, |
222 | { |
223 | /* Address 0x4b */ |
224 | .reg_bits = 8, |
225 | .val_bits = 8, |
226 | .max_register = 0xff, |
227 | }, |
228 | }; |
229 | |
230 | static struct twl_mapping twl6030_map[] = { |
231 | /* |
232 | * NOTE: don't change this table without updating the |
233 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
234 | * so they continue to match the order in this table. |
235 | */ |
236 | |
237 | /* Common IPs */ |
238 | { 1, TWL6030_BASEADD_USB }, |
239 | { 1, TWL6030_BASEADD_PIH }, |
240 | { 1, TWL6030_BASEADD_CHARGER }, |
241 | { 0, TWL6030_BASEADD_PM_MASTER }, |
242 | { 0, TWL6030_BASEADD_PM_SLAVE_MISC }, |
243 | |
244 | { 0, TWL6030_BASEADD_RTC }, |
245 | { 1, TWL6030_BASEADD_PWM }, |
246 | { 1, TWL6030_BASEADD_LED }, |
247 | { 0, TWL6030_BASEADD_SECURED_REG }, |
248 | |
249 | /* TWL6030 specific IPs */ |
250 | { 0, TWL6030_BASEADD_ZERO }, |
251 | { 1, TWL6030_BASEADD_ZERO }, |
252 | { 2, TWL6030_BASEADD_ZERO }, |
253 | { 1, TWL6030_BASEADD_GPADC_CTRL }, |
254 | { 1, TWL6030_BASEADD_GASGAUGE }, |
255 | }; |
256 | |
257 | static struct regmap_config twl6030_regmap_config[3] = { |
258 | { |
259 | /* Address 0x48 */ |
260 | .reg_bits = 8, |
261 | .val_bits = 8, |
262 | .max_register = 0xff, |
263 | }, |
264 | { |
265 | /* Address 0x49 */ |
266 | .reg_bits = 8, |
267 | .val_bits = 8, |
268 | .max_register = 0xff, |
269 | }, |
270 | { |
271 | /* Address 0x4a */ |
272 | .reg_bits = 8, |
273 | .val_bits = 8, |
274 | .max_register = 0xff, |
275 | }, |
276 | }; |
277 | |
278 | /*----------------------------------------------------------------------*/ |
279 | |
280 | static inline int twl_get_num_slaves(void) |
281 | { |
282 | if (twl_class_is_4030()) |
283 | return 4; /* TWL4030 class have four slave address */ |
284 | else |
285 | return 3; /* TWL6030 class have three slave address */ |
286 | } |
287 | |
288 | static inline int twl_get_last_module(void) |
289 | { |
290 | if (twl_class_is_4030()) |
291 | return TWL4030_MODULE_LAST; |
292 | else |
293 | return TWL6030_MODULE_LAST; |
294 | } |
295 | |
296 | /* Exported Functions */ |
297 | |
298 | unsigned int twl_rev(void) |
299 | { |
300 | return twl_priv ? twl_priv->twl_id : 0; |
301 | } |
302 | EXPORT_SYMBOL(twl_rev); |
303 | |
304 | /** |
305 | * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 |
306 | * @mod_no: module number |
307 | * @value: an array of num_bytes+1 containing data to write |
308 | * @reg: register address (just offset will do) |
309 | * @num_bytes: number of bytes to transfer |
310 | * |
311 | * Returns the result of operation - 0 is success |
312 | */ |
313 | int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
314 | { |
315 | int ret; |
316 | int sid; |
317 | struct twl_client *twl; |
318 | |
319 | if (unlikely(!twl_priv || !twl_priv->ready)) { |
320 | pr_err("%s: not initialized\n", DRIVER_NAME); |
321 | return -EPERM; |
322 | } |
323 | if (unlikely(mod_no >= twl_get_last_module())) { |
324 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
325 | return -EPERM; |
326 | } |
327 | |
328 | sid = twl_priv->twl_map[mod_no].sid; |
329 | twl = &twl_priv->twl_modules[sid]; |
330 | |
331 | ret = regmap_bulk_write(twl->regmap, |
332 | twl_priv->twl_map[mod_no].base + reg, value, |
333 | num_bytes); |
334 | |
335 | if (ret) |
336 | pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n", |
337 | DRIVER_NAME, mod_no, reg, num_bytes); |
338 | |
339 | return ret; |
340 | } |
341 | EXPORT_SYMBOL(twl_i2c_write); |
342 | |
343 | /** |
344 | * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 |
345 | * @mod_no: module number |
346 | * @value: an array of num_bytes containing data to be read |
347 | * @reg: register address (just offset will do) |
348 | * @num_bytes: number of bytes to transfer |
349 | * |
350 | * Returns result of operation - num_bytes is success else failure. |
351 | */ |
352 | int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
353 | { |
354 | int ret; |
355 | int sid; |
356 | struct twl_client *twl; |
357 | |
358 | if (unlikely(!twl_priv || !twl_priv->ready)) { |
359 | pr_err("%s: not initialized\n", DRIVER_NAME); |
360 | return -EPERM; |
361 | } |
362 | if (unlikely(mod_no >= twl_get_last_module())) { |
363 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
364 | return -EPERM; |
365 | } |
366 | |
367 | sid = twl_priv->twl_map[mod_no].sid; |
368 | twl = &twl_priv->twl_modules[sid]; |
369 | |
370 | ret = regmap_bulk_read(twl->regmap, |
371 | twl_priv->twl_map[mod_no].base + reg, value, |
372 | num_bytes); |
373 | |
374 | if (ret) |
375 | pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n", |
376 | DRIVER_NAME, mod_no, reg, num_bytes); |
377 | |
378 | return ret; |
379 | } |
380 | EXPORT_SYMBOL(twl_i2c_read); |
381 | |
382 | /*----------------------------------------------------------------------*/ |
383 | |
384 | /** |
385 | * twl_read_idcode_register - API to read the IDCODE register. |
386 | * |
387 | * Unlocks the IDCODE register and read the 32 bit value. |
388 | */ |
389 | static int twl_read_idcode_register(void) |
390 | { |
391 | int err; |
392 | |
393 | err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK, |
394 | REG_UNLOCK_TEST_REG); |
395 | if (err) { |
396 | pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err); |
397 | goto fail; |
398 | } |
399 | |
400 | err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode), |
401 | REG_IDCODE_7_0, 4); |
402 | if (err) { |
403 | pr_err("TWL4030: unable to read IDCODE -%d\n", err); |
404 | goto fail; |
405 | } |
406 | |
407 | err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG); |
408 | if (err) |
409 | pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err); |
410 | fail: |
411 | return err; |
412 | } |
413 | |
414 | /** |
415 | * twl_get_type - API to get TWL Si type. |
416 | * |
417 | * Api to get the TWL Si type from IDCODE value. |
418 | */ |
419 | int twl_get_type(void) |
420 | { |
421 | return TWL_SIL_TYPE(twl_priv->twl_idcode); |
422 | } |
423 | EXPORT_SYMBOL_GPL(twl_get_type); |
424 | |
425 | /** |
426 | * twl_get_version - API to get TWL Si version. |
427 | * |
428 | * Api to get the TWL Si version from IDCODE value. |
429 | */ |
430 | int twl_get_version(void) |
431 | { |
432 | return TWL_SIL_REV(twl_priv->twl_idcode); |
433 | } |
434 | EXPORT_SYMBOL_GPL(twl_get_version); |
435 | |
436 | /** |
437 | * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate. |
438 | * |
439 | * Api to get the TWL HFCLK rate based on BOOT_CFG register. |
440 | */ |
441 | int twl_get_hfclk_rate(void) |
442 | { |
443 | u8 ctrl; |
444 | int rate; |
445 | |
446 | twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT); |
447 | |
448 | switch (ctrl & 0x3) { |
449 | case HFCLK_FREQ_19p2_MHZ: |
450 | rate = 19200000; |
451 | break; |
452 | case HFCLK_FREQ_26_MHZ: |
453 | rate = 26000000; |
454 | break; |
455 | case HFCLK_FREQ_38p4_MHZ: |
456 | rate = 38400000; |
457 | break; |
458 | default: |
459 | pr_err("TWL4030: HFCLK is not configured\n"); |
460 | rate = -EINVAL; |
461 | break; |
462 | } |
463 | |
464 | return rate; |
465 | } |
466 | EXPORT_SYMBOL_GPL(twl_get_hfclk_rate); |
467 | |
468 | static struct device * |
469 | add_numbered_child(unsigned mod_no, const char *name, int num, |
470 | void *pdata, unsigned pdata_len, |
471 | bool can_wakeup, int irq0, int irq1) |
472 | { |
473 | struct platform_device *pdev; |
474 | struct twl_client *twl; |
475 | int status, sid; |
476 | |
477 | if (unlikely(mod_no >= twl_get_last_module())) { |
478 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
479 | return ERR_PTR(-EPERM); |
480 | } |
481 | sid = twl_priv->twl_map[mod_no].sid; |
482 | twl = &twl_priv->twl_modules[sid]; |
483 | |
484 | pdev = platform_device_alloc(name, num); |
485 | if (!pdev) { |
486 | dev_dbg(&twl->client->dev, "can't alloc dev\n"); |
487 | status = -ENOMEM; |
488 | goto err; |
489 | } |
490 | |
491 | pdev->dev.parent = &twl->client->dev; |
492 | |
493 | if (pdata) { |
494 | status = platform_device_add_data(pdev, pdata, pdata_len); |
495 | if (status < 0) { |
496 | dev_dbg(&pdev->dev, "can't add platform_data\n"); |
497 | goto err; |
498 | } |
499 | } |
500 | |
501 | if (irq0) { |
502 | struct resource r[2] = { |
503 | { .start = irq0, .flags = IORESOURCE_IRQ, }, |
504 | { .start = irq1, .flags = IORESOURCE_IRQ, }, |
505 | }; |
506 | |
507 | status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); |
508 | if (status < 0) { |
509 | dev_dbg(&pdev->dev, "can't add irqs\n"); |
510 | goto err; |
511 | } |
512 | } |
513 | |
514 | status = platform_device_add(pdev); |
515 | if (status == 0) |
516 | device_init_wakeup(&pdev->dev, can_wakeup); |
517 | |
518 | err: |
519 | if (status < 0) { |
520 | platform_device_put(pdev); |
521 | dev_err(&twl->client->dev, "can't add %s dev\n", name); |
522 | return ERR_PTR(status); |
523 | } |
524 | return &pdev->dev; |
525 | } |
526 | |
527 | static inline struct device *add_child(unsigned mod_no, const char *name, |
528 | void *pdata, unsigned pdata_len, |
529 | bool can_wakeup, int irq0, int irq1) |
530 | { |
531 | return add_numbered_child(mod_no, name, -1, pdata, pdata_len, |
532 | can_wakeup, irq0, irq1); |
533 | } |
534 | |
535 | static struct device * |
536 | add_regulator_linked(int num, struct regulator_init_data *pdata, |
537 | struct regulator_consumer_supply *consumers, |
538 | unsigned num_consumers, unsigned long features) |
539 | { |
540 | struct twl_regulator_driver_data drv_data; |
541 | |
542 | /* regulator framework demands init_data ... */ |
543 | if (!pdata) |
544 | return NULL; |
545 | |
546 | if (consumers) { |
547 | pdata->consumer_supplies = consumers; |
548 | pdata->num_consumer_supplies = num_consumers; |
549 | } |
550 | |
551 | if (pdata->driver_data) { |
552 | /* If we have existing drv_data, just add the flags */ |
553 | struct twl_regulator_driver_data *tmp; |
554 | tmp = pdata->driver_data; |
555 | tmp->features |= features; |
556 | } else { |
557 | /* add new driver data struct, used only during init */ |
558 | drv_data.features = features; |
559 | drv_data.set_voltage = NULL; |
560 | drv_data.get_voltage = NULL; |
561 | drv_data.data = NULL; |
562 | pdata->driver_data = &drv_data; |
563 | } |
564 | |
565 | /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ |
566 | return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num, |
567 | pdata, sizeof(*pdata), false, 0, 0); |
568 | } |
569 | |
570 | static struct device * |
571 | add_regulator(int num, struct regulator_init_data *pdata, |
572 | unsigned long features) |
573 | { |
574 | return add_regulator_linked(num, pdata, NULL, 0, features); |
575 | } |
576 | |
577 | /* |
578 | * NOTE: We know the first 8 IRQs after pdata->base_irq are |
579 | * for the PIH, and the next are for the PWR_INT SIH, since |
580 | * that's how twl_init_irq() sets things up. |
581 | */ |
582 | |
583 | static int |
584 | add_children(struct twl4030_platform_data *pdata, unsigned irq_base, |
585 | unsigned long features) |
586 | { |
587 | struct device *child; |
588 | |
589 | if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) { |
590 | child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio", |
591 | pdata->gpio, sizeof(*pdata->gpio), |
592 | false, irq_base + GPIO_INTR_OFFSET, 0); |
593 | if (IS_ERR(child)) |
594 | return PTR_ERR(child); |
595 | } |
596 | |
597 | if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) { |
598 | child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad", |
599 | pdata->keypad, sizeof(*pdata->keypad), |
600 | true, irq_base + KEYPAD_INTR_OFFSET, 0); |
601 | if (IS_ERR(child)) |
602 | return PTR_ERR(child); |
603 | } |
604 | |
605 | if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc && |
606 | twl_class_is_4030()) { |
607 | child = add_child(TWL4030_MODULE_MADC, "twl4030_madc", |
608 | pdata->madc, sizeof(*pdata->madc), |
609 | true, irq_base + MADC_INTR_OFFSET, 0); |
610 | if (IS_ERR(child)) |
611 | return PTR_ERR(child); |
612 | } |
613 | |
614 | if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) { |
615 | /* |
616 | * REVISIT platform_data here currently might expose the |
617 | * "msecure" line ... but for now we just expect board |
618 | * setup to tell the chip "it's always ok to SET_TIME". |
619 | * Eventually, Linux might become more aware of such |
620 | * HW security concerns, and "least privilege". |
621 | */ |
622 | child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0, |
623 | true, irq_base + RTC_INTR_OFFSET, 0); |
624 | if (IS_ERR(child)) |
625 | return PTR_ERR(child); |
626 | } |
627 | |
628 | if (IS_ENABLED(CONFIG_PWM_TWL)) { |
629 | child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0, |
630 | false, 0, 0); |
631 | if (IS_ERR(child)) |
632 | return PTR_ERR(child); |
633 | } |
634 | |
635 | if (IS_ENABLED(CONFIG_PWM_TWL_LED)) { |
636 | child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0, |
637 | false, 0, 0); |
638 | if (IS_ERR(child)) |
639 | return PTR_ERR(child); |
640 | } |
641 | |
642 | if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb && |
643 | twl_class_is_4030()) { |
644 | |
645 | static struct regulator_consumer_supply usb1v5 = { |
646 | .supply = "usb1v5", |
647 | }; |
648 | static struct regulator_consumer_supply usb1v8 = { |
649 | .supply = "usb1v8", |
650 | }; |
651 | static struct regulator_consumer_supply usb3v1[] = { |
652 | { .supply = "usb3v1" }, |
653 | { .supply = "bci3v1" }, |
654 | }; |
655 | |
656 | /* First add the regulators so that they can be used by transceiver */ |
657 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) { |
658 | /* this is a template that gets copied */ |
659 | struct regulator_init_data usb_fixed = { |
660 | .constraints.valid_modes_mask = |
661 | REGULATOR_MODE_NORMAL |
662 | | REGULATOR_MODE_STANDBY, |
663 | .constraints.valid_ops_mask = |
664 | REGULATOR_CHANGE_MODE |
665 | | REGULATOR_CHANGE_STATUS, |
666 | }; |
667 | |
668 | child = add_regulator_linked(TWL4030_REG_VUSB1V5, |
669 | &usb_fixed, &usb1v5, 1, |
670 | features); |
671 | if (IS_ERR(child)) |
672 | return PTR_ERR(child); |
673 | |
674 | child = add_regulator_linked(TWL4030_REG_VUSB1V8, |
675 | &usb_fixed, &usb1v8, 1, |
676 | features); |
677 | if (IS_ERR(child)) |
678 | return PTR_ERR(child); |
679 | |
680 | child = add_regulator_linked(TWL4030_REG_VUSB3V1, |
681 | &usb_fixed, usb3v1, 2, |
682 | features); |
683 | if (IS_ERR(child)) |
684 | return PTR_ERR(child); |
685 | |
686 | } |
687 | |
688 | child = add_child(TWL_MODULE_USB, "twl4030_usb", |
689 | pdata->usb, sizeof(*pdata->usb), true, |
690 | /* irq0 = USB_PRES, irq1 = USB */ |
691 | irq_base + USB_PRES_INTR_OFFSET, |
692 | irq_base + USB_INTR_OFFSET); |
693 | |
694 | if (IS_ERR(child)) |
695 | return PTR_ERR(child); |
696 | |
697 | /* we need to connect regulators to this transceiver */ |
698 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) { |
699 | usb1v5.dev_name = dev_name(child); |
700 | usb1v8.dev_name = dev_name(child); |
701 | usb3v1[0].dev_name = dev_name(child); |
702 | } |
703 | } |
704 | if (IS_ENABLED(CONFIG_TWL6030_USB) && pdata->usb && |
705 | twl_class_is_6030()) { |
706 | |
707 | static struct regulator_consumer_supply usb3v3; |
708 | int regulator; |
709 | |
710 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) { |
711 | /* this is a template that gets copied */ |
712 | struct regulator_init_data usb_fixed = { |
713 | .constraints.valid_modes_mask = |
714 | REGULATOR_MODE_NORMAL |
715 | | REGULATOR_MODE_STANDBY, |
716 | .constraints.valid_ops_mask = |
717 | REGULATOR_CHANGE_MODE |
718 | | REGULATOR_CHANGE_STATUS, |
719 | }; |
720 | |
721 | if (features & TWL6025_SUBCLASS) { |
722 | usb3v3.supply = "ldousb"; |
723 | regulator = TWL6025_REG_LDOUSB; |
724 | } else { |
725 | usb3v3.supply = "vusb"; |
726 | regulator = TWL6030_REG_VUSB; |
727 | } |
728 | child = add_regulator_linked(regulator, &usb_fixed, |
729 | &usb3v3, 1, |
730 | features); |
731 | if (IS_ERR(child)) |
732 | return PTR_ERR(child); |
733 | } |
734 | |
735 | pdata->usb->features = features; |
736 | |
737 | child = add_child(TWL_MODULE_USB, "twl6030_usb", |
738 | pdata->usb, sizeof(*pdata->usb), true, |
739 | /* irq1 = VBUS_PRES, irq0 = USB ID */ |
740 | irq_base + USBOTG_INTR_OFFSET, |
741 | irq_base + USB_PRES_INTR_OFFSET); |
742 | |
743 | if (IS_ERR(child)) |
744 | return PTR_ERR(child); |
745 | /* we need to connect regulators to this transceiver */ |
746 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) |
747 | usb3v3.dev_name = dev_name(child); |
748 | } else if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && |
749 | twl_class_is_6030()) { |
750 | if (features & TWL6025_SUBCLASS) |
751 | child = add_regulator(TWL6025_REG_LDOUSB, |
752 | pdata->ldousb, features); |
753 | else |
754 | child = add_regulator(TWL6030_REG_VUSB, |
755 | pdata->vusb, features); |
756 | |
757 | if (IS_ERR(child)) |
758 | return PTR_ERR(child); |
759 | } |
760 | |
761 | if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) { |
762 | child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL, |
763 | 0, false, 0, 0); |
764 | if (IS_ERR(child)) |
765 | return PTR_ERR(child); |
766 | } |
767 | |
768 | if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) { |
769 | child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton", |
770 | NULL, 0, true, irq_base + 8 + 0, 0); |
771 | if (IS_ERR(child)) |
772 | return PTR_ERR(child); |
773 | } |
774 | |
775 | if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio && |
776 | twl_class_is_4030()) { |
777 | child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio", |
778 | pdata->audio, sizeof(*pdata->audio), |
779 | false, 0, 0); |
780 | if (IS_ERR(child)) |
781 | return PTR_ERR(child); |
782 | } |
783 | |
784 | /* twl4030 regulators */ |
785 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) { |
786 | child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1, |
787 | features); |
788 | if (IS_ERR(child)) |
789 | return PTR_ERR(child); |
790 | |
791 | child = add_regulator(TWL4030_REG_VIO, pdata->vio, |
792 | features); |
793 | if (IS_ERR(child)) |
794 | return PTR_ERR(child); |
795 | |
796 | child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1, |
797 | features); |
798 | if (IS_ERR(child)) |
799 | return PTR_ERR(child); |
800 | |
801 | child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2, |
802 | features); |
803 | if (IS_ERR(child)) |
804 | return PTR_ERR(child); |
805 | |
806 | child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1, |
807 | features); |
808 | if (IS_ERR(child)) |
809 | return PTR_ERR(child); |
810 | |
811 | child = add_regulator(TWL4030_REG_VDAC, pdata->vdac, |
812 | features); |
813 | if (IS_ERR(child)) |
814 | return PTR_ERR(child); |
815 | |
816 | child = add_regulator((features & TWL4030_VAUX2) |
817 | ? TWL4030_REG_VAUX2_4030 |
818 | : TWL4030_REG_VAUX2, |
819 | pdata->vaux2, features); |
820 | if (IS_ERR(child)) |
821 | return PTR_ERR(child); |
822 | |
823 | child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1, |
824 | features); |
825 | if (IS_ERR(child)) |
826 | return PTR_ERR(child); |
827 | |
828 | child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2, |
829 | features); |
830 | if (IS_ERR(child)) |
831 | return PTR_ERR(child); |
832 | |
833 | child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig, |
834 | features); |
835 | if (IS_ERR(child)) |
836 | return PTR_ERR(child); |
837 | } |
838 | |
839 | /* maybe add LDOs that are omitted on cost-reduced parts */ |
840 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET) |
841 | && twl_class_is_4030()) { |
842 | child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2, |
843 | features); |
844 | if (IS_ERR(child)) |
845 | return PTR_ERR(child); |
846 | |
847 | child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2, |
848 | features); |
849 | if (IS_ERR(child)) |
850 | return PTR_ERR(child); |
851 | |
852 | child = add_regulator(TWL4030_REG_VSIM, pdata->vsim, |
853 | features); |
854 | if (IS_ERR(child)) |
855 | return PTR_ERR(child); |
856 | |
857 | child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1, |
858 | features); |
859 | if (IS_ERR(child)) |
860 | return PTR_ERR(child); |
861 | |
862 | child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3, |
863 | features); |
864 | if (IS_ERR(child)) |
865 | return PTR_ERR(child); |
866 | |
867 | child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4, |
868 | features); |
869 | if (IS_ERR(child)) |
870 | return PTR_ERR(child); |
871 | } |
872 | |
873 | /* twl6030 regulators */ |
874 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() && |
875 | !(features & TWL6025_SUBCLASS)) { |
876 | child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1, |
877 | features); |
878 | if (IS_ERR(child)) |
879 | return PTR_ERR(child); |
880 | |
881 | child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2, |
882 | features); |
883 | if (IS_ERR(child)) |
884 | return PTR_ERR(child); |
885 | |
886 | child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3, |
887 | features); |
888 | if (IS_ERR(child)) |
889 | return PTR_ERR(child); |
890 | |
891 | child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8, |
892 | features); |
893 | if (IS_ERR(child)) |
894 | return PTR_ERR(child); |
895 | |
896 | child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1, |
897 | features); |
898 | if (IS_ERR(child)) |
899 | return PTR_ERR(child); |
900 | |
901 | child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc, |
902 | features); |
903 | if (IS_ERR(child)) |
904 | return PTR_ERR(child); |
905 | |
906 | child = add_regulator(TWL6030_REG_VPP, pdata->vpp, |
907 | features); |
908 | if (IS_ERR(child)) |
909 | return PTR_ERR(child); |
910 | |
911 | child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim, |
912 | features); |
913 | if (IS_ERR(child)) |
914 | return PTR_ERR(child); |
915 | |
916 | child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio, |
917 | features); |
918 | if (IS_ERR(child)) |
919 | return PTR_ERR(child); |
920 | |
921 | child = add_regulator(TWL6030_REG_VDAC, pdata->vdac, |
922 | features); |
923 | if (IS_ERR(child)) |
924 | return PTR_ERR(child); |
925 | |
926 | child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1, |
927 | features); |
928 | if (IS_ERR(child)) |
929 | return PTR_ERR(child); |
930 | |
931 | child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2, |
932 | features); |
933 | if (IS_ERR(child)) |
934 | return PTR_ERR(child); |
935 | |
936 | child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3, |
937 | features); |
938 | if (IS_ERR(child)) |
939 | return PTR_ERR(child); |
940 | |
941 | child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg, |
942 | features); |
943 | if (IS_ERR(child)) |
944 | return PTR_ERR(child); |
945 | } |
946 | |
947 | /* 6030 and 6025 share this regulator */ |
948 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030()) { |
949 | child = add_regulator(TWL6030_REG_VANA, pdata->vana, |
950 | features); |
951 | if (IS_ERR(child)) |
952 | return PTR_ERR(child); |
953 | } |
954 | |
955 | /* twl6025 regulators */ |
956 | if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() && |
957 | (features & TWL6025_SUBCLASS)) { |
958 | child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5, |
959 | features); |
960 | if (IS_ERR(child)) |
961 | return PTR_ERR(child); |
962 | |
963 | child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1, |
964 | features); |
965 | if (IS_ERR(child)) |
966 | return PTR_ERR(child); |
967 | |
968 | child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7, |
969 | features); |
970 | if (IS_ERR(child)) |
971 | return PTR_ERR(child); |
972 | |
973 | child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6, |
974 | features); |
975 | if (IS_ERR(child)) |
976 | return PTR_ERR(child); |
977 | |
978 | child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln, |
979 | features); |
980 | if (IS_ERR(child)) |
981 | return PTR_ERR(child); |
982 | |
983 | child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2, |
984 | features); |
985 | if (IS_ERR(child)) |
986 | return PTR_ERR(child); |
987 | |
988 | child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4, |
989 | features); |
990 | if (IS_ERR(child)) |
991 | return PTR_ERR(child); |
992 | |
993 | child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3, |
994 | features); |
995 | if (IS_ERR(child)) |
996 | return PTR_ERR(child); |
997 | |
998 | child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3, |
999 | features); |
1000 | if (IS_ERR(child)) |
1001 | return PTR_ERR(child); |
1002 | |
1003 | child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4, |
1004 | features); |
1005 | if (IS_ERR(child)) |
1006 | return PTR_ERR(child); |
1007 | |
1008 | child = add_regulator(TWL6025_REG_VIO, pdata->vio6025, |
1009 | features); |
1010 | if (IS_ERR(child)) |
1011 | return PTR_ERR(child); |
1012 | |
1013 | } |
1014 | |
1015 | if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci && |
1016 | !(features & (TPS_SUBSET | TWL5031))) { |
1017 | child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci", |
1018 | pdata->bci, sizeof(*pdata->bci), false, |
1019 | /* irq0 = CHG_PRES, irq1 = BCI */ |
1020 | irq_base + BCI_PRES_INTR_OFFSET, |
1021 | irq_base + BCI_INTR_OFFSET); |
1022 | if (IS_ERR(child)) |
1023 | return PTR_ERR(child); |
1024 | } |
1025 | |
1026 | return 0; |
1027 | } |
1028 | |
1029 | /*----------------------------------------------------------------------*/ |
1030 | |
1031 | /* |
1032 | * These three functions initialize the on-chip clock framework, |
1033 | * letting it generate the right frequencies for USB, MADC, and |
1034 | * other purposes. |
1035 | */ |
1036 | static inline int __init protect_pm_master(void) |
1037 | { |
1038 | int e = 0; |
1039 | |
1040 | e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, |
1041 | TWL4030_PM_MASTER_PROTECT_KEY); |
1042 | return e; |
1043 | } |
1044 | |
1045 | static inline int __init unprotect_pm_master(void) |
1046 | { |
1047 | int e = 0; |
1048 | |
1049 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, |
1050 | TWL4030_PM_MASTER_PROTECT_KEY); |
1051 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, |
1052 | TWL4030_PM_MASTER_PROTECT_KEY); |
1053 | |
1054 | return e; |
1055 | } |
1056 | |
1057 | static void clocks_init(struct device *dev, |
1058 | struct twl4030_clock_init_data *clock) |
1059 | { |
1060 | int e = 0; |
1061 | struct clk *osc; |
1062 | u32 rate; |
1063 | u8 ctrl = HFCLK_FREQ_26_MHZ; |
1064 | |
1065 | osc = clk_get(dev, "fck"); |
1066 | if (IS_ERR(osc)) { |
1067 | printk(KERN_WARNING "Skipping twl internal clock init and " |
1068 | "using bootloader value (unknown osc rate)\n"); |
1069 | return; |
1070 | } |
1071 | |
1072 | rate = clk_get_rate(osc); |
1073 | clk_put(osc); |
1074 | |
1075 | switch (rate) { |
1076 | case 19200000: |
1077 | ctrl = HFCLK_FREQ_19p2_MHZ; |
1078 | break; |
1079 | case 26000000: |
1080 | ctrl = HFCLK_FREQ_26_MHZ; |
1081 | break; |
1082 | case 38400000: |
1083 | ctrl = HFCLK_FREQ_38p4_MHZ; |
1084 | break; |
1085 | } |
1086 | |
1087 | ctrl |= HIGH_PERF_SQ; |
1088 | if (clock && clock->ck32k_lowpwr_enable) |
1089 | ctrl |= CK32K_LOWPWR_EN; |
1090 | |
1091 | e |= unprotect_pm_master(); |
1092 | /* effect->MADC+USB ck en */ |
1093 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); |
1094 | e |= protect_pm_master(); |
1095 | |
1096 | if (e < 0) |
1097 | pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); |
1098 | } |
1099 | |
1100 | /*----------------------------------------------------------------------*/ |
1101 | |
1102 | |
1103 | static int twl_remove(struct i2c_client *client) |
1104 | { |
1105 | unsigned i, num_slaves; |
1106 | int status; |
1107 | |
1108 | if (twl_class_is_4030()) |
1109 | status = twl4030_exit_irq(); |
1110 | else |
1111 | status = twl6030_exit_irq(); |
1112 | |
1113 | if (status < 0) |
1114 | return status; |
1115 | |
1116 | num_slaves = twl_get_num_slaves(); |
1117 | for (i = 0; i < num_slaves; i++) { |
1118 | struct twl_client *twl = &twl_priv->twl_modules[i]; |
1119 | |
1120 | if (twl->client && twl->client != client) |
1121 | i2c_unregister_device(twl->client); |
1122 | twl->client = NULL; |
1123 | } |
1124 | twl_priv->ready = false; |
1125 | return 0; |
1126 | } |
1127 | |
1128 | /* NOTE: This driver only handles a single twl4030/tps659x0 chip */ |
1129 | static int |
1130 | twl_probe(struct i2c_client *client, const struct i2c_device_id *id) |
1131 | { |
1132 | struct twl4030_platform_data *pdata = client->dev.platform_data; |
1133 | struct device_node *node = client->dev.of_node; |
1134 | struct platform_device *pdev; |
1135 | struct regmap_config *twl_regmap_config; |
1136 | int irq_base = 0; |
1137 | int status; |
1138 | unsigned i, num_slaves; |
1139 | |
1140 | if (!node && !pdata) { |
1141 | dev_err(&client->dev, "no platform data\n"); |
1142 | return -EINVAL; |
1143 | } |
1144 | |
1145 | if (twl_priv) { |
1146 | dev_dbg(&client->dev, "only one instance of %s allowed\n", |
1147 | DRIVER_NAME); |
1148 | return -EBUSY; |
1149 | } |
1150 | |
1151 | pdev = platform_device_alloc(DRIVER_NAME, -1); |
1152 | if (!pdev) { |
1153 | dev_err(&client->dev, "can't alloc pdev\n"); |
1154 | return -ENOMEM; |
1155 | } |
1156 | |
1157 | status = platform_device_add(pdev); |
1158 | if (status) { |
1159 | platform_device_put(pdev); |
1160 | return status; |
1161 | } |
1162 | |
1163 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { |
1164 | dev_dbg(&client->dev, "can't talk I2C?\n"); |
1165 | status = -EIO; |
1166 | goto free; |
1167 | } |
1168 | |
1169 | twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private), |
1170 | GFP_KERNEL); |
1171 | if (!twl_priv) { |
1172 | status = -ENOMEM; |
1173 | goto free; |
1174 | } |
1175 | |
1176 | if ((id->driver_data) & TWL6030_CLASS) { |
1177 | twl_priv->twl_id = TWL6030_CLASS_ID; |
1178 | twl_priv->twl_map = &twl6030_map[0]; |
1179 | /* The charger base address is different in twl6025 */ |
1180 | if ((id->driver_data) & TWL6025_SUBCLASS) |
1181 | twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base = |
1182 | TWL6025_BASEADD_CHARGER; |
1183 | twl_regmap_config = twl6030_regmap_config; |
1184 | } else { |
1185 | twl_priv->twl_id = TWL4030_CLASS_ID; |
1186 | twl_priv->twl_map = &twl4030_map[0]; |
1187 | twl_regmap_config = twl4030_regmap_config; |
1188 | } |
1189 | |
1190 | num_slaves = twl_get_num_slaves(); |
1191 | twl_priv->twl_modules = devm_kzalloc(&client->dev, |
1192 | sizeof(struct twl_client) * num_slaves, |
1193 | GFP_KERNEL); |
1194 | if (!twl_priv->twl_modules) { |
1195 | status = -ENOMEM; |
1196 | goto free; |
1197 | } |
1198 | |
1199 | for (i = 0; i < num_slaves; i++) { |
1200 | struct twl_client *twl = &twl_priv->twl_modules[i]; |
1201 | |
1202 | if (i == 0) { |
1203 | twl->client = client; |
1204 | } else { |
1205 | twl->client = i2c_new_dummy(client->adapter, |
1206 | client->addr + i); |
1207 | if (!twl->client) { |
1208 | dev_err(&client->dev, |
1209 | "can't attach client %d\n", i); |
1210 | status = -ENOMEM; |
1211 | goto fail; |
1212 | } |
1213 | } |
1214 | |
1215 | twl->regmap = devm_regmap_init_i2c(twl->client, |
1216 | &twl_regmap_config[i]); |
1217 | if (IS_ERR(twl->regmap)) { |
1218 | status = PTR_ERR(twl->regmap); |
1219 | dev_err(&client->dev, |
1220 | "Failed to allocate regmap %d, err: %d\n", i, |
1221 | status); |
1222 | goto fail; |
1223 | } |
1224 | } |
1225 | |
1226 | twl_priv->ready = true; |
1227 | |
1228 | /* setup clock framework */ |
1229 | clocks_init(&pdev->dev, pdata ? pdata->clock : NULL); |
1230 | |
1231 | /* read TWL IDCODE Register */ |
1232 | if (twl_class_is_4030()) { |
1233 | status = twl_read_idcode_register(); |
1234 | WARN(status < 0, "Error: reading twl_idcode register value\n"); |
1235 | } |
1236 | |
1237 | /* load power event scripts */ |
1238 | if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata && pdata->power) |
1239 | twl4030_power_init(pdata->power); |
1240 | |
1241 | /* Maybe init the T2 Interrupt subsystem */ |
1242 | if (client->irq) { |
1243 | if (twl_class_is_4030()) { |
1244 | twl4030_init_chip_irq(id->name); |
1245 | irq_base = twl4030_init_irq(&client->dev, client->irq); |
1246 | } else { |
1247 | irq_base = twl6030_init_irq(&client->dev, client->irq); |
1248 | } |
1249 | |
1250 | if (irq_base < 0) { |
1251 | status = irq_base; |
1252 | goto fail; |
1253 | } |
1254 | } |
1255 | |
1256 | /* |
1257 | * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. |
1258 | * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, |
1259 | * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. |
1260 | */ |
1261 | if (twl_class_is_4030()) { |
1262 | u8 temp; |
1263 | |
1264 | twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); |
1265 | temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ |
1266 | I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); |
1267 | twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); |
1268 | } |
1269 | |
1270 | if (node) |
1271 | status = of_platform_populate(node, NULL, NULL, &client->dev); |
1272 | else |
1273 | status = add_children(pdata, irq_base, id->driver_data); |
1274 | |
1275 | fail: |
1276 | if (status < 0) |
1277 | twl_remove(client); |
1278 | free: |
1279 | if (status < 0) |
1280 | platform_device_unregister(pdev); |
1281 | |
1282 | return status; |
1283 | } |
1284 | |
1285 | static const struct i2c_device_id twl_ids[] = { |
1286 | { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ |
1287 | { "twl5030", 0 }, /* T2 updated */ |
1288 | { "twl5031", TWL5031 }, /* TWL5030 updated */ |
1289 | { "tps65950", 0 }, /* catalog version of twl5030 */ |
1290 | { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ |
1291 | { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ |
1292 | { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED |
1293 | and vibrator. Charger in USB module*/ |
1294 | { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ |
1295 | { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */ |
1296 | { /* end of list */ }, |
1297 | }; |
1298 | MODULE_DEVICE_TABLE(i2c, twl_ids); |
1299 | |
1300 | /* One Client Driver , 4 Clients */ |
1301 | static struct i2c_driver twl_driver = { |
1302 | .driver.name = DRIVER_NAME, |
1303 | .id_table = twl_ids, |
1304 | .probe = twl_probe, |
1305 | .remove = twl_remove, |
1306 | }; |
1307 | |
1308 | static int __init twl_init(void) |
1309 | { |
1310 | return i2c_add_driver(&twl_driver); |
1311 | } |
1312 | subsys_initcall(twl_init); |
1313 | |
1314 | static void __exit twl_exit(void) |
1315 | { |
1316 | i2c_del_driver(&twl_driver); |
1317 | } |
1318 | module_exit(twl_exit); |
1319 | |
1320 | MODULE_AUTHOR("Texas Instruments, Inc."); |
1321 | MODULE_DESCRIPTION("I2C Core interface for TWL"); |
1322 | MODULE_LICENSE("GPL"); |
1323 |
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v2.6.34-rc5
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