Loading...
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/platform_device.h>
34#include <linux/clk.h>
35#include <linux/err.h>
36
37#include <linux/regulator/machine.h>
38
39#include <linux/i2c.h>
40#include <linux/i2c/twl.h>
41
42#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
43#include <plat/cpu.h>
44#endif
45
46/*
47 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
48 * Management and System Companion Device" chips originally designed for
49 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C,
50 * often at around 3 Mbit/sec, including for interrupt handling.
51 *
52 * This driver core provides genirq support for the interrupts emitted,
53 * by the various modules, and exports register access primitives.
54 *
55 * FIXME this driver currently requires use of the first interrupt line
56 * (and associated registers).
57 */
58
59#define DRIVER_NAME "twl"
60
61#if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
62#define twl_has_keypad() true
63#else
64#define twl_has_keypad() false
65#endif
66
67#if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
68#define twl_has_gpio() true
69#else
70#define twl_has_gpio() false
71#endif
72
73#if defined(CONFIG_REGULATOR_TWL4030) \
74 || defined(CONFIG_REGULATOR_TWL4030_MODULE)
75#define twl_has_regulator() true
76#else
77#define twl_has_regulator() false
78#endif
79
80#if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
81#define twl_has_madc() true
82#else
83#define twl_has_madc() false
84#endif
85
86#ifdef CONFIG_TWL4030_POWER
87#define twl_has_power() true
88#else
89#define twl_has_power() false
90#endif
91
92#if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
93#define twl_has_rtc() true
94#else
95#define twl_has_rtc() false
96#endif
97
98#if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
99 defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
100#define twl_has_usb() true
101#else
102#define twl_has_usb() false
103#endif
104
105#if defined(CONFIG_TWL4030_WATCHDOG) || \
106 defined(CONFIG_TWL4030_WATCHDOG_MODULE)
107#define twl_has_watchdog() true
108#else
109#define twl_has_watchdog() false
110#endif
111
112#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\
113 defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE)
114#define twl_has_codec() true
115#else
116#define twl_has_codec() false
117#endif
118
119#if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
120#define twl_has_bci() true
121#else
122#define twl_has_bci() false
123#endif
124
125/* Triton Core internal information (BEGIN) */
126
127/* Last - for index max*/
128#define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
129
130#define TWL_NUM_SLAVES 4
131
132#if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
133 || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
134#define twl_has_pwrbutton() true
135#else
136#define twl_has_pwrbutton() false
137#endif
138
139#define SUB_CHIP_ID0 0
140#define SUB_CHIP_ID1 1
141#define SUB_CHIP_ID2 2
142#define SUB_CHIP_ID3 3
143
144#define TWL_MODULE_LAST TWL4030_MODULE_LAST
145
146/* Base Address defns for twl4030_map[] */
147
148/* subchip/slave 0 - USB ID */
149#define TWL4030_BASEADD_USB 0x0000
150
151/* subchip/slave 1 - AUD ID */
152#define TWL4030_BASEADD_AUDIO_VOICE 0x0000
153#define TWL4030_BASEADD_GPIO 0x0098
154#define TWL4030_BASEADD_INTBR 0x0085
155#define TWL4030_BASEADD_PIH 0x0080
156#define TWL4030_BASEADD_TEST 0x004C
157
158/* subchip/slave 2 - AUX ID */
159#define TWL4030_BASEADD_INTERRUPTS 0x00B9
160#define TWL4030_BASEADD_LED 0x00EE
161#define TWL4030_BASEADD_MADC 0x0000
162#define TWL4030_BASEADD_MAIN_CHARGE 0x0074
163#define TWL4030_BASEADD_PRECHARGE 0x00AA
164#define TWL4030_BASEADD_PWM0 0x00F8
165#define TWL4030_BASEADD_PWM1 0x00FB
166#define TWL4030_BASEADD_PWMA 0x00EF
167#define TWL4030_BASEADD_PWMB 0x00F1
168#define TWL4030_BASEADD_KEYPAD 0x00D2
169
170#define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
171#define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
172 one */
173
174/* subchip/slave 3 - POWER ID */
175#define TWL4030_BASEADD_BACKUP 0x0014
176#define TWL4030_BASEADD_INT 0x002E
177#define TWL4030_BASEADD_PM_MASTER 0x0036
178#define TWL4030_BASEADD_PM_RECEIVER 0x005B
179#define TWL4030_BASEADD_RTC 0x001C
180#define TWL4030_BASEADD_SECURED_REG 0x0000
181
182/* Triton Core internal information (END) */
183
184
185/* subchip/slave 0 0x48 - POWER */
186#define TWL6030_BASEADD_RTC 0x0000
187#define TWL6030_BASEADD_MEM 0x0017
188#define TWL6030_BASEADD_PM_MASTER 0x001F
189#define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
190#define TWL6030_BASEADD_PM_MISC 0x00E2
191#define TWL6030_BASEADD_PM_PUPD 0x00F0
192
193/* subchip/slave 1 0x49 - FEATURE */
194#define TWL6030_BASEADD_USB 0x0000
195#define TWL6030_BASEADD_GPADC_CTRL 0x002E
196#define TWL6030_BASEADD_AUX 0x0090
197#define TWL6030_BASEADD_PWM 0x00BA
198#define TWL6030_BASEADD_GASGAUGE 0x00C0
199#define TWL6030_BASEADD_PIH 0x00D0
200#define TWL6030_BASEADD_CHARGER 0x00E0
201#define TWL6025_BASEADD_CHARGER 0x00DA
202
203/* subchip/slave 2 0x4A - DFT */
204#define TWL6030_BASEADD_DIEID 0x00C0
205
206/* subchip/slave 3 0x4B - AUDIO */
207#define TWL6030_BASEADD_AUDIO 0x0000
208#define TWL6030_BASEADD_RSV 0x0000
209#define TWL6030_BASEADD_ZERO 0x0000
210
211/* Few power values */
212#define R_CFG_BOOT 0x05
213
214/* some fields in R_CFG_BOOT */
215#define HFCLK_FREQ_19p2_MHZ (1 << 0)
216#define HFCLK_FREQ_26_MHZ (2 << 0)
217#define HFCLK_FREQ_38p4_MHZ (3 << 0)
218#define HIGH_PERF_SQ (1 << 3)
219#define CK32K_LOWPWR_EN (1 << 7)
220
221
222/* chip-specific feature flags, for i2c_device_id.driver_data */
223#define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
224#define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
225#define TWL5031 BIT(2) /* twl5031 has different registers */
226#define TWL6030_CLASS BIT(3) /* TWL6030 class */
227
228/*----------------------------------------------------------------------*/
229
230/* is driver active, bound to a chip? */
231static bool inuse;
232
233/* TWL IDCODE Register value */
234static u32 twl_idcode;
235
236static unsigned int twl_id;
237unsigned int twl_rev(void)
238{
239 return twl_id;
240}
241EXPORT_SYMBOL(twl_rev);
242
243/* Structure for each TWL4030/TWL6030 Slave */
244struct twl_client {
245 struct i2c_client *client;
246 u8 address;
247
248 /* max numb of i2c_msg required is for read =2 */
249 struct i2c_msg xfer_msg[2];
250
251 /* To lock access to xfer_msg */
252 struct mutex xfer_lock;
253};
254
255static struct twl_client twl_modules[TWL_NUM_SLAVES];
256
257
258/* mapping the module id to slave id and base address */
259struct twl_mapping {
260 unsigned char sid; /* Slave ID */
261 unsigned char base; /* base address */
262};
263static struct twl_mapping *twl_map;
264
265static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
266 /*
267 * NOTE: don't change this table without updating the
268 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
269 * so they continue to match the order in this table.
270 */
271
272 { 0, TWL4030_BASEADD_USB },
273
274 { 1, TWL4030_BASEADD_AUDIO_VOICE },
275 { 1, TWL4030_BASEADD_GPIO },
276 { 1, TWL4030_BASEADD_INTBR },
277 { 1, TWL4030_BASEADD_PIH },
278 { 1, TWL4030_BASEADD_TEST },
279
280 { 2, TWL4030_BASEADD_KEYPAD },
281 { 2, TWL4030_BASEADD_MADC },
282 { 2, TWL4030_BASEADD_INTERRUPTS },
283 { 2, TWL4030_BASEADD_LED },
284 { 2, TWL4030_BASEADD_MAIN_CHARGE },
285 { 2, TWL4030_BASEADD_PRECHARGE },
286 { 2, TWL4030_BASEADD_PWM0 },
287 { 2, TWL4030_BASEADD_PWM1 },
288 { 2, TWL4030_BASEADD_PWMA },
289 { 2, TWL4030_BASEADD_PWMB },
290 { 2, TWL5031_BASEADD_ACCESSORY },
291 { 2, TWL5031_BASEADD_INTERRUPTS },
292
293 { 3, TWL4030_BASEADD_BACKUP },
294 { 3, TWL4030_BASEADD_INT },
295 { 3, TWL4030_BASEADD_PM_MASTER },
296 { 3, TWL4030_BASEADD_PM_RECEIVER },
297 { 3, TWL4030_BASEADD_RTC },
298 { 3, TWL4030_BASEADD_SECURED_REG },
299};
300
301static struct twl_mapping twl6030_map[] = {
302 /*
303 * NOTE: don't change this table without updating the
304 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
305 * so they continue to match the order in this table.
306 */
307 { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
308 { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
309 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
310 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
311 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
312
313 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
314 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
315 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
316 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
317 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
318
319 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
320 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
321 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
322 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
323 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
324
325 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
326 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
327 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
328 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
329 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
330 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
331 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
332
333 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
334 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
335 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
336};
337
338/*----------------------------------------------------------------------*/
339
340/* Exported Functions */
341
342/**
343 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
344 * @mod_no: module number
345 * @value: an array of num_bytes+1 containing data to write
346 * @reg: register address (just offset will do)
347 * @num_bytes: number of bytes to transfer
348 *
349 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
350 * valid data starts at Offset 1.
351 *
352 * Returns the result of operation - 0 is success
353 */
354int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
355{
356 int ret;
357 int sid;
358 struct twl_client *twl;
359 struct i2c_msg *msg;
360
361 if (unlikely(mod_no > TWL_MODULE_LAST)) {
362 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
363 return -EPERM;
364 }
365 sid = twl_map[mod_no].sid;
366 twl = &twl_modules[sid];
367
368 if (unlikely(!inuse)) {
369 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
370 return -EPERM;
371 }
372 mutex_lock(&twl->xfer_lock);
373 /*
374 * [MSG1]: fill the register address data
375 * fill the data Tx buffer
376 */
377 msg = &twl->xfer_msg[0];
378 msg->addr = twl->address;
379 msg->len = num_bytes + 1;
380 msg->flags = 0;
381 msg->buf = value;
382 /* over write the first byte of buffer with the register address */
383 *value = twl_map[mod_no].base + reg;
384 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
385 mutex_unlock(&twl->xfer_lock);
386
387 /* i2c_transfer returns number of messages transferred */
388 if (ret != 1) {
389 pr_err("%s: i2c_write failed to transfer all messages\n",
390 DRIVER_NAME);
391 if (ret < 0)
392 return ret;
393 else
394 return -EIO;
395 } else {
396 return 0;
397 }
398}
399EXPORT_SYMBOL(twl_i2c_write);
400
401/**
402 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
403 * @mod_no: module number
404 * @value: an array of num_bytes containing data to be read
405 * @reg: register address (just offset will do)
406 * @num_bytes: number of bytes to transfer
407 *
408 * Returns result of operation - num_bytes is success else failure.
409 */
410int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
411{
412 int ret;
413 u8 val;
414 int sid;
415 struct twl_client *twl;
416 struct i2c_msg *msg;
417
418 if (unlikely(mod_no > TWL_MODULE_LAST)) {
419 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
420 return -EPERM;
421 }
422 sid = twl_map[mod_no].sid;
423 twl = &twl_modules[sid];
424
425 if (unlikely(!inuse)) {
426 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
427 return -EPERM;
428 }
429 mutex_lock(&twl->xfer_lock);
430 /* [MSG1] fill the register address data */
431 msg = &twl->xfer_msg[0];
432 msg->addr = twl->address;
433 msg->len = 1;
434 msg->flags = 0; /* Read the register value */
435 val = twl_map[mod_no].base + reg;
436 msg->buf = &val;
437 /* [MSG2] fill the data rx buffer */
438 msg = &twl->xfer_msg[1];
439 msg->addr = twl->address;
440 msg->flags = I2C_M_RD; /* Read the register value */
441 msg->len = num_bytes; /* only n bytes */
442 msg->buf = value;
443 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
444 mutex_unlock(&twl->xfer_lock);
445
446 /* i2c_transfer returns number of messages transferred */
447 if (ret != 2) {
448 pr_err("%s: i2c_read failed to transfer all messages\n",
449 DRIVER_NAME);
450 if (ret < 0)
451 return ret;
452 else
453 return -EIO;
454 } else {
455 return 0;
456 }
457}
458EXPORT_SYMBOL(twl_i2c_read);
459
460/**
461 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
462 * @mod_no: module number
463 * @value: the value to be written 8 bit
464 * @reg: register address (just offset will do)
465 *
466 * Returns result of operation - 0 is success
467 */
468int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
469{
470
471 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
472 u8 temp_buffer[2] = { 0 };
473 /* offset 1 contains the data */
474 temp_buffer[1] = value;
475 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
476}
477EXPORT_SYMBOL(twl_i2c_write_u8);
478
479/**
480 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
481 * @mod_no: module number
482 * @value: the value read 8 bit
483 * @reg: register address (just offset will do)
484 *
485 * Returns result of operation - 0 is success
486 */
487int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
488{
489 return twl_i2c_read(mod_no, value, reg, 1);
490}
491EXPORT_SYMBOL(twl_i2c_read_u8);
492
493/*----------------------------------------------------------------------*/
494
495/**
496 * twl_read_idcode_register - API to read the IDCODE register.
497 *
498 * Unlocks the IDCODE register and read the 32 bit value.
499 */
500static int twl_read_idcode_register(void)
501{
502 int err;
503
504 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
505 REG_UNLOCK_TEST_REG);
506 if (err) {
507 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
508 goto fail;
509 }
510
511 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
512 REG_IDCODE_7_0, 4);
513 if (err) {
514 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
515 goto fail;
516 }
517
518 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
519 if (err)
520 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
521fail:
522 return err;
523}
524
525/**
526 * twl_get_type - API to get TWL Si type.
527 *
528 * Api to get the TWL Si type from IDCODE value.
529 */
530int twl_get_type(void)
531{
532 return TWL_SIL_TYPE(twl_idcode);
533}
534EXPORT_SYMBOL_GPL(twl_get_type);
535
536/**
537 * twl_get_version - API to get TWL Si version.
538 *
539 * Api to get the TWL Si version from IDCODE value.
540 */
541int twl_get_version(void)
542{
543 return TWL_SIL_REV(twl_idcode);
544}
545EXPORT_SYMBOL_GPL(twl_get_version);
546
547static struct device *
548add_numbered_child(unsigned chip, const char *name, int num,
549 void *pdata, unsigned pdata_len,
550 bool can_wakeup, int irq0, int irq1)
551{
552 struct platform_device *pdev;
553 struct twl_client *twl = &twl_modules[chip];
554 int status;
555
556 pdev = platform_device_alloc(name, num);
557 if (!pdev) {
558 dev_dbg(&twl->client->dev, "can't alloc dev\n");
559 status = -ENOMEM;
560 goto err;
561 }
562
563 device_init_wakeup(&pdev->dev, can_wakeup);
564 pdev->dev.parent = &twl->client->dev;
565
566 if (pdata) {
567 status = platform_device_add_data(pdev, pdata, pdata_len);
568 if (status < 0) {
569 dev_dbg(&pdev->dev, "can't add platform_data\n");
570 goto err;
571 }
572 }
573
574 if (irq0) {
575 struct resource r[2] = {
576 { .start = irq0, .flags = IORESOURCE_IRQ, },
577 { .start = irq1, .flags = IORESOURCE_IRQ, },
578 };
579
580 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
581 if (status < 0) {
582 dev_dbg(&pdev->dev, "can't add irqs\n");
583 goto err;
584 }
585 }
586
587 status = platform_device_add(pdev);
588
589err:
590 if (status < 0) {
591 platform_device_put(pdev);
592 dev_err(&twl->client->dev, "can't add %s dev\n", name);
593 return ERR_PTR(status);
594 }
595 return &pdev->dev;
596}
597
598static inline struct device *add_child(unsigned chip, const char *name,
599 void *pdata, unsigned pdata_len,
600 bool can_wakeup, int irq0, int irq1)
601{
602 return add_numbered_child(chip, name, -1, pdata, pdata_len,
603 can_wakeup, irq0, irq1);
604}
605
606static struct device *
607add_regulator_linked(int num, struct regulator_init_data *pdata,
608 struct regulator_consumer_supply *consumers,
609 unsigned num_consumers, unsigned long features)
610{
611 unsigned sub_chip_id;
612 /* regulator framework demands init_data ... */
613 if (!pdata)
614 return NULL;
615
616 if (consumers) {
617 pdata->consumer_supplies = consumers;
618 pdata->num_consumer_supplies = num_consumers;
619 }
620
621 pdata->driver_data = (void *)features;
622
623 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
624 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
625 return add_numbered_child(sub_chip_id, "twl_reg", num,
626 pdata, sizeof(*pdata), false, 0, 0);
627}
628
629static struct device *
630add_regulator(int num, struct regulator_init_data *pdata,
631 unsigned long features)
632{
633 return add_regulator_linked(num, pdata, NULL, 0, features);
634}
635
636/*
637 * NOTE: We know the first 8 IRQs after pdata->base_irq are
638 * for the PIH, and the next are for the PWR_INT SIH, since
639 * that's how twl_init_irq() sets things up.
640 */
641
642static int
643add_children(struct twl4030_platform_data *pdata, unsigned long features)
644{
645 struct device *child;
646 unsigned sub_chip_id;
647
648 if (twl_has_gpio() && pdata->gpio) {
649 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
650 pdata->gpio, sizeof(*pdata->gpio),
651 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
652 if (IS_ERR(child))
653 return PTR_ERR(child);
654 }
655
656 if (twl_has_keypad() && pdata->keypad) {
657 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
658 pdata->keypad, sizeof(*pdata->keypad),
659 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
660 if (IS_ERR(child))
661 return PTR_ERR(child);
662 }
663
664 if (twl_has_madc() && pdata->madc) {
665 child = add_child(2, "twl4030_madc",
666 pdata->madc, sizeof(*pdata->madc),
667 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
668 if (IS_ERR(child))
669 return PTR_ERR(child);
670 }
671
672 if (twl_has_rtc()) {
673 /*
674 * REVISIT platform_data here currently might expose the
675 * "msecure" line ... but for now we just expect board
676 * setup to tell the chip "it's always ok to SET_TIME".
677 * Eventually, Linux might become more aware of such
678 * HW security concerns, and "least privilege".
679 */
680 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
681 child = add_child(sub_chip_id, "twl_rtc",
682 NULL, 0,
683 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
684 if (IS_ERR(child))
685 return PTR_ERR(child);
686 }
687
688 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
689
690 static struct regulator_consumer_supply usb1v5 = {
691 .supply = "usb1v5",
692 };
693 static struct regulator_consumer_supply usb1v8 = {
694 .supply = "usb1v8",
695 };
696 static struct regulator_consumer_supply usb3v1 = {
697 .supply = "usb3v1",
698 };
699
700 /* First add the regulators so that they can be used by transceiver */
701 if (twl_has_regulator()) {
702 /* this is a template that gets copied */
703 struct regulator_init_data usb_fixed = {
704 .constraints.valid_modes_mask =
705 REGULATOR_MODE_NORMAL
706 | REGULATOR_MODE_STANDBY,
707 .constraints.valid_ops_mask =
708 REGULATOR_CHANGE_MODE
709 | REGULATOR_CHANGE_STATUS,
710 };
711
712 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
713 &usb_fixed, &usb1v5, 1,
714 features);
715 if (IS_ERR(child))
716 return PTR_ERR(child);
717
718 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
719 &usb_fixed, &usb1v8, 1,
720 features);
721 if (IS_ERR(child))
722 return PTR_ERR(child);
723
724 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
725 &usb_fixed, &usb3v1, 1,
726 features);
727 if (IS_ERR(child))
728 return PTR_ERR(child);
729
730 }
731
732 child = add_child(0, "twl4030_usb",
733 pdata->usb, sizeof(*pdata->usb),
734 true,
735 /* irq0 = USB_PRES, irq1 = USB */
736 pdata->irq_base + USB_PRES_INTR_OFFSET,
737 pdata->irq_base + USB_INTR_OFFSET);
738
739 if (IS_ERR(child))
740 return PTR_ERR(child);
741
742 /* we need to connect regulators to this transceiver */
743 if (twl_has_regulator() && child) {
744 usb1v5.dev = child;
745 usb1v8.dev = child;
746 usb3v1.dev = child;
747 }
748 }
749 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
750
751 static struct regulator_consumer_supply usb3v3;
752 int regulator;
753
754 if (twl_has_regulator()) {
755 /* this is a template that gets copied */
756 struct regulator_init_data usb_fixed = {
757 .constraints.valid_modes_mask =
758 REGULATOR_MODE_NORMAL
759 | REGULATOR_MODE_STANDBY,
760 .constraints.valid_ops_mask =
761 REGULATOR_CHANGE_MODE
762 | REGULATOR_CHANGE_STATUS,
763 };
764
765 if (features & TWL6025_SUBCLASS) {
766 usb3v3.supply = "ldousb";
767 regulator = TWL6025_REG_LDOUSB;
768 } else {
769 usb3v3.supply = "vusb";
770 regulator = TWL6030_REG_VUSB;
771 }
772 child = add_regulator_linked(regulator, &usb_fixed,
773 &usb3v3, 1,
774 features);
775 if (IS_ERR(child))
776 return PTR_ERR(child);
777 }
778
779 pdata->usb->features = features;
780
781 child = add_child(0, "twl6030_usb",
782 pdata->usb, sizeof(*pdata->usb),
783 true,
784 /* irq1 = VBUS_PRES, irq0 = USB ID */
785 pdata->irq_base + USBOTG_INTR_OFFSET,
786 pdata->irq_base + USB_PRES_INTR_OFFSET);
787
788 if (IS_ERR(child))
789 return PTR_ERR(child);
790 /* we need to connect regulators to this transceiver */
791 if (twl_has_regulator() && child)
792 usb3v3.dev = child;
793 } else if (twl_has_regulator() && twl_class_is_6030()) {
794 if (features & TWL6025_SUBCLASS)
795 child = add_regulator(TWL6025_REG_LDOUSB,
796 pdata->ldousb, features);
797 else
798 child = add_regulator(TWL6030_REG_VUSB,
799 pdata->vusb, features);
800
801 if (IS_ERR(child))
802 return PTR_ERR(child);
803 }
804
805 if (twl_has_watchdog() && twl_class_is_4030()) {
806 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
807 if (IS_ERR(child))
808 return PTR_ERR(child);
809 }
810
811 if (twl_has_pwrbutton() && twl_class_is_4030()) {
812 child = add_child(1, "twl4030_pwrbutton",
813 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
814 if (IS_ERR(child))
815 return PTR_ERR(child);
816 }
817
818 if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
819 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
820 child = add_child(sub_chip_id, "twl4030-audio",
821 pdata->audio, sizeof(*pdata->audio),
822 false, 0, 0);
823 if (IS_ERR(child))
824 return PTR_ERR(child);
825 }
826
827 if (twl_has_codec() && pdata->audio && twl_class_is_6030()) {
828 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
829 child = add_child(sub_chip_id, "twl6040",
830 pdata->audio, sizeof(*pdata->audio),
831 false, 0, 0);
832 if (IS_ERR(child))
833 return PTR_ERR(child);
834 }
835
836 /* twl4030 regulators */
837 if (twl_has_regulator() && twl_class_is_4030()) {
838 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
839 features);
840 if (IS_ERR(child))
841 return PTR_ERR(child);
842
843 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
844 features);
845 if (IS_ERR(child))
846 return PTR_ERR(child);
847
848 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
849 features);
850 if (IS_ERR(child))
851 return PTR_ERR(child);
852
853 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
854 features);
855 if (IS_ERR(child))
856 return PTR_ERR(child);
857
858 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
859 features);
860 if (IS_ERR(child))
861 return PTR_ERR(child);
862
863 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
864 features);
865 if (IS_ERR(child))
866 return PTR_ERR(child);
867
868 child = add_regulator((features & TWL4030_VAUX2)
869 ? TWL4030_REG_VAUX2_4030
870 : TWL4030_REG_VAUX2,
871 pdata->vaux2, features);
872 if (IS_ERR(child))
873 return PTR_ERR(child);
874
875 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
876 features);
877 if (IS_ERR(child))
878 return PTR_ERR(child);
879
880 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
881 features);
882 if (IS_ERR(child))
883 return PTR_ERR(child);
884
885 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
886 features);
887 if (IS_ERR(child))
888 return PTR_ERR(child);
889 }
890
891 /* maybe add LDOs that are omitted on cost-reduced parts */
892 if (twl_has_regulator() && !(features & TPS_SUBSET)
893 && twl_class_is_4030()) {
894 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
895 features);
896 if (IS_ERR(child))
897 return PTR_ERR(child);
898
899 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
900 features);
901 if (IS_ERR(child))
902 return PTR_ERR(child);
903
904 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
905 features);
906 if (IS_ERR(child))
907 return PTR_ERR(child);
908
909 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
910 features);
911 if (IS_ERR(child))
912 return PTR_ERR(child);
913
914 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
915 features);
916 if (IS_ERR(child))
917 return PTR_ERR(child);
918
919 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
920 features);
921 if (IS_ERR(child))
922 return PTR_ERR(child);
923 }
924
925 /* twl6030 regulators */
926 if (twl_has_regulator() && twl_class_is_6030() &&
927 !(features & TWL6025_SUBCLASS)) {
928 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
929 features);
930 if (IS_ERR(child))
931 return PTR_ERR(child);
932
933 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
934 features);
935 if (IS_ERR(child))
936 return PTR_ERR(child);
937
938 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
939 features);
940 if (IS_ERR(child))
941 return PTR_ERR(child);
942
943 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
944 features);
945 if (IS_ERR(child))
946 return PTR_ERR(child);
947
948 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
949 features);
950 if (IS_ERR(child))
951 return PTR_ERR(child);
952
953 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
954 features);
955 if (IS_ERR(child))
956 return PTR_ERR(child);
957
958 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
959 features);
960 if (IS_ERR(child))
961 return PTR_ERR(child);
962
963 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
964 features);
965 if (IS_ERR(child))
966 return PTR_ERR(child);
967
968 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
969 features);
970 if (IS_ERR(child))
971 return PTR_ERR(child);
972 }
973
974 /* 6030 and 6025 share this regulator */
975 if (twl_has_regulator() && twl_class_is_6030()) {
976 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
977 features);
978 if (IS_ERR(child))
979 return PTR_ERR(child);
980 }
981
982 /* twl6025 regulators */
983 if (twl_has_regulator() && twl_class_is_6030() &&
984 (features & TWL6025_SUBCLASS)) {
985 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
986 features);
987 if (IS_ERR(child))
988 return PTR_ERR(child);
989
990 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
991 features);
992 if (IS_ERR(child))
993 return PTR_ERR(child);
994
995 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
996 features);
997 if (IS_ERR(child))
998 return PTR_ERR(child);
999
1000 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1001 features);
1002 if (IS_ERR(child))
1003 return PTR_ERR(child);
1004
1005 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1006 features);
1007 if (IS_ERR(child))
1008 return PTR_ERR(child);
1009
1010 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1011 features);
1012 if (IS_ERR(child))
1013 return PTR_ERR(child);
1014
1015 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1016 features);
1017 if (IS_ERR(child))
1018 return PTR_ERR(child);
1019
1020 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1021 features);
1022 if (IS_ERR(child))
1023 return PTR_ERR(child);
1024
1025 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1026 features);
1027 if (IS_ERR(child))
1028 return PTR_ERR(child);
1029
1030 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1031 features);
1032 if (IS_ERR(child))
1033 return PTR_ERR(child);
1034
1035 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1036 features);
1037 if (IS_ERR(child))
1038 return PTR_ERR(child);
1039
1040 }
1041
1042 if (twl_has_bci() && pdata->bci &&
1043 !(features & (TPS_SUBSET | TWL5031))) {
1044 child = add_child(3, "twl4030_bci",
1045 pdata->bci, sizeof(*pdata->bci), false,
1046 /* irq0 = CHG_PRES, irq1 = BCI */
1047 pdata->irq_base + BCI_PRES_INTR_OFFSET,
1048 pdata->irq_base + BCI_INTR_OFFSET);
1049 if (IS_ERR(child))
1050 return PTR_ERR(child);
1051 }
1052
1053 return 0;
1054}
1055
1056/*----------------------------------------------------------------------*/
1057
1058/*
1059 * These three functions initialize the on-chip clock framework,
1060 * letting it generate the right frequencies for USB, MADC, and
1061 * other purposes.
1062 */
1063static inline int __init protect_pm_master(void)
1064{
1065 int e = 0;
1066
1067 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1068 TWL4030_PM_MASTER_PROTECT_KEY);
1069 return e;
1070}
1071
1072static inline int __init unprotect_pm_master(void)
1073{
1074 int e = 0;
1075
1076 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1077 TWL4030_PM_MASTER_KEY_CFG1,
1078 TWL4030_PM_MASTER_PROTECT_KEY);
1079 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1080 TWL4030_PM_MASTER_KEY_CFG2,
1081 TWL4030_PM_MASTER_PROTECT_KEY);
1082
1083 return e;
1084}
1085
1086static void clocks_init(struct device *dev,
1087 struct twl4030_clock_init_data *clock)
1088{
1089 int e = 0;
1090 struct clk *osc;
1091 u32 rate;
1092 u8 ctrl = HFCLK_FREQ_26_MHZ;
1093
1094#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1095 if (cpu_is_omap2430())
1096 osc = clk_get(dev, "osc_ck");
1097 else
1098 osc = clk_get(dev, "osc_sys_ck");
1099
1100 if (IS_ERR(osc)) {
1101 printk(KERN_WARNING "Skipping twl internal clock init and "
1102 "using bootloader value (unknown osc rate)\n");
1103 return;
1104 }
1105
1106 rate = clk_get_rate(osc);
1107 clk_put(osc);
1108
1109#else
1110 /* REVISIT for non-OMAP systems, pass the clock rate from
1111 * board init code, using platform_data.
1112 */
1113 osc = ERR_PTR(-EIO);
1114
1115 printk(KERN_WARNING "Skipping twl internal clock init and "
1116 "using bootloader value (unknown osc rate)\n");
1117
1118 return;
1119#endif
1120
1121 switch (rate) {
1122 case 19200000:
1123 ctrl = HFCLK_FREQ_19p2_MHZ;
1124 break;
1125 case 26000000:
1126 ctrl = HFCLK_FREQ_26_MHZ;
1127 break;
1128 case 38400000:
1129 ctrl = HFCLK_FREQ_38p4_MHZ;
1130 break;
1131 }
1132
1133 ctrl |= HIGH_PERF_SQ;
1134 if (clock && clock->ck32k_lowpwr_enable)
1135 ctrl |= CK32K_LOWPWR_EN;
1136
1137 e |= unprotect_pm_master();
1138 /* effect->MADC+USB ck en */
1139 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1140 e |= protect_pm_master();
1141
1142 if (e < 0)
1143 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1144}
1145
1146/*----------------------------------------------------------------------*/
1147
1148int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1149int twl4030_exit_irq(void);
1150int twl4030_init_chip_irq(const char *chip);
1151int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1152int twl6030_exit_irq(void);
1153
1154static int twl_remove(struct i2c_client *client)
1155{
1156 unsigned i;
1157 int status;
1158
1159 if (twl_class_is_4030())
1160 status = twl4030_exit_irq();
1161 else
1162 status = twl6030_exit_irq();
1163
1164 if (status < 0)
1165 return status;
1166
1167 for (i = 0; i < TWL_NUM_SLAVES; i++) {
1168 struct twl_client *twl = &twl_modules[i];
1169
1170 if (twl->client && twl->client != client)
1171 i2c_unregister_device(twl->client);
1172 twl_modules[i].client = NULL;
1173 }
1174 inuse = false;
1175 return 0;
1176}
1177
1178/* NOTE: this driver only handles a single twl4030/tps659x0 chip */
1179static int __devinit
1180twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1181{
1182 int status;
1183 unsigned i;
1184 struct twl4030_platform_data *pdata = client->dev.platform_data;
1185 u8 temp;
1186 int ret = 0;
1187
1188 if (!pdata) {
1189 dev_dbg(&client->dev, "no platform data?\n");
1190 return -EINVAL;
1191 }
1192
1193 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1194 dev_dbg(&client->dev, "can't talk I2C?\n");
1195 return -EIO;
1196 }
1197
1198 if (inuse) {
1199 dev_dbg(&client->dev, "driver is already in use\n");
1200 return -EBUSY;
1201 }
1202
1203 for (i = 0; i < TWL_NUM_SLAVES; i++) {
1204 struct twl_client *twl = &twl_modules[i];
1205
1206 twl->address = client->addr + i;
1207 if (i == 0)
1208 twl->client = client;
1209 else {
1210 twl->client = i2c_new_dummy(client->adapter,
1211 twl->address);
1212 if (!twl->client) {
1213 dev_err(&client->dev,
1214 "can't attach client %d\n", i);
1215 status = -ENOMEM;
1216 goto fail;
1217 }
1218 }
1219 mutex_init(&twl->xfer_lock);
1220 }
1221 inuse = true;
1222 if ((id->driver_data) & TWL6030_CLASS) {
1223 twl_id = TWL6030_CLASS_ID;
1224 twl_map = &twl6030_map[0];
1225 } else {
1226 twl_id = TWL4030_CLASS_ID;
1227 twl_map = &twl4030_map[0];
1228 }
1229
1230 /* setup clock framework */
1231 clocks_init(&client->dev, pdata->clock);
1232
1233 /* read TWL IDCODE Register */
1234 if (twl_id == TWL4030_CLASS_ID) {
1235 ret = twl_read_idcode_register();
1236 WARN(ret < 0, "Error: reading twl_idcode register value\n");
1237 }
1238
1239 /* load power event scripts */
1240 if (twl_has_power() && pdata->power)
1241 twl4030_power_init(pdata->power);
1242
1243 /* Maybe init the T2 Interrupt subsystem */
1244 if (client->irq
1245 && pdata->irq_base
1246 && pdata->irq_end > pdata->irq_base) {
1247 if (twl_class_is_4030()) {
1248 twl4030_init_chip_irq(id->name);
1249 status = twl4030_init_irq(client->irq, pdata->irq_base,
1250 pdata->irq_end);
1251 } else {
1252 status = twl6030_init_irq(client->irq, pdata->irq_base,
1253 pdata->irq_end);
1254 }
1255
1256 if (status < 0)
1257 goto fail;
1258 }
1259
1260 /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1261 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1262 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1263 */
1264
1265 if (twl_class_is_4030()) {
1266 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1267 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1268 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1269 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1270 }
1271
1272 status = add_children(pdata, id->driver_data);
1273fail:
1274 if (status < 0)
1275 twl_remove(client);
1276 return status;
1277}
1278
1279static const struct i2c_device_id twl_ids[] = {
1280 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
1281 { "twl5030", 0 }, /* T2 updated */
1282 { "twl5031", TWL5031 }, /* TWL5030 updated */
1283 { "tps65950", 0 }, /* catalog version of twl5030 */
1284 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
1285 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
1286 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED
1287 and vibrator. Charger in USB module*/
1288 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1289 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1290 { /* end of list */ },
1291};
1292MODULE_DEVICE_TABLE(i2c, twl_ids);
1293
1294/* One Client Driver , 4 Clients */
1295static struct i2c_driver twl_driver = {
1296 .driver.name = DRIVER_NAME,
1297 .id_table = twl_ids,
1298 .probe = twl_probe,
1299 .remove = twl_remove,
1300};
1301
1302static int __init twl_init(void)
1303{
1304 return i2c_add_driver(&twl_driver);
1305}
1306subsys_initcall(twl_init);
1307
1308static void __exit twl_exit(void)
1309{
1310 i2c_del_driver(&twl_driver);
1311}
1312module_exit(twl_exit);
1313
1314MODULE_AUTHOR("Texas Instruments, Inc.");
1315MODULE_DESCRIPTION("I2C Core interface for TWL");
1316MODULE_LICENSE("GPL");
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM
4 * and audio CODEC devices
5 *
6 * Copyright (C) 2005-2006 Texas Instruments, Inc.
7 *
8 * Modifications to defer interrupt handling to a kernel thread:
9 * Copyright (C) 2006 MontaVista Software, Inc.
10 *
11 * Based on tlv320aic23.c:
12 * Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
13 *
14 * Code cleanup and modifications to IRQ handler.
15 * by syed khasim <x0khasim@ti.com>
16 */
17
18#include <linux/init.h>
19#include <linux/mutex.h>
20#include <linux/platform_device.h>
21#include <linux/regmap.h>
22#include <linux/clk.h>
23#include <linux/err.h>
24#include <linux/device.h>
25#include <linux/of.h>
26#include <linux/of_irq.h>
27#include <linux/of_platform.h>
28#include <linux/irq.h>
29#include <linux/irqdomain.h>
30
31#include <linux/regulator/machine.h>
32
33#include <linux/i2c.h>
34#include <linux/mfd/twl.h>
35
36/* Register descriptions for audio */
37#include <linux/mfd/twl4030-audio.h>
38
39#include "twl-core.h"
40
41/*
42 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
43 * Management and System Companion Device" chips originally designed for
44 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C,
45 * often at around 3 Mbit/sec, including for interrupt handling.
46 *
47 * This driver core provides genirq support for the interrupts emitted,
48 * by the various modules, and exports register access primitives.
49 *
50 * FIXME this driver currently requires use of the first interrupt line
51 * (and associated registers).
52 */
53
54#define DRIVER_NAME "twl"
55
56/* Triton Core internal information (BEGIN) */
57
58/* Base Address defns for twl4030_map[] */
59
60/* subchip/slave 0 - USB ID */
61#define TWL4030_BASEADD_USB 0x0000
62
63/* subchip/slave 1 - AUD ID */
64#define TWL4030_BASEADD_AUDIO_VOICE 0x0000
65#define TWL4030_BASEADD_GPIO 0x0098
66#define TWL4030_BASEADD_INTBR 0x0085
67#define TWL4030_BASEADD_PIH 0x0080
68#define TWL4030_BASEADD_TEST 0x004C
69
70/* subchip/slave 2 - AUX ID */
71#define TWL4030_BASEADD_INTERRUPTS 0x00B9
72#define TWL4030_BASEADD_LED 0x00EE
73#define TWL4030_BASEADD_MADC 0x0000
74#define TWL4030_BASEADD_MAIN_CHARGE 0x0074
75#define TWL4030_BASEADD_PRECHARGE 0x00AA
76#define TWL4030_BASEADD_PWM 0x00F8
77#define TWL4030_BASEADD_KEYPAD 0x00D2
78
79#define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
80#define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
81 one */
82
83/* subchip/slave 3 - POWER ID */
84#define TWL4030_BASEADD_BACKUP 0x0014
85#define TWL4030_BASEADD_INT 0x002E
86#define TWL4030_BASEADD_PM_MASTER 0x0036
87
88#define TWL4030_BASEADD_PM_RECEIVER 0x005B
89#define TWL4030_DCDC_GLOBAL_CFG 0x06
90#define SMARTREFLEX_ENABLE BIT(3)
91
92#define TWL4030_BASEADD_RTC 0x001C
93#define TWL4030_BASEADD_SECURED_REG 0x0000
94
95/* Triton Core internal information (END) */
96
97
98/* subchip/slave 0 0x48 - POWER */
99#define TWL6030_BASEADD_RTC 0x0000
100#define TWL6030_BASEADD_SECURED_REG 0x0017
101#define TWL6030_BASEADD_PM_MASTER 0x001F
102#define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
103#define TWL6030_BASEADD_PM_MISC 0x00E2
104#define TWL6030_BASEADD_PM_PUPD 0x00F0
105
106/* subchip/slave 1 0x49 - FEATURE */
107#define TWL6030_BASEADD_USB 0x0000
108#define TWL6030_BASEADD_GPADC_CTRL 0x002E
109#define TWL6030_BASEADD_AUX 0x0090
110#define TWL6030_BASEADD_PWM 0x00BA
111#define TWL6030_BASEADD_GASGAUGE 0x00C0
112#define TWL6030_BASEADD_PIH 0x00D0
113#define TWL6030_BASEADD_CHARGER 0x00E0
114#define TWL6032_BASEADD_CHARGER 0x00DA
115#define TWL6030_BASEADD_LED 0x00F4
116
117/* subchip/slave 2 0x4A - DFT */
118#define TWL6030_BASEADD_DIEID 0x00C0
119
120/* subchip/slave 3 0x4B - AUDIO */
121#define TWL6030_BASEADD_AUDIO 0x0000
122#define TWL6030_BASEADD_RSV 0x0000
123#define TWL6030_BASEADD_ZERO 0x0000
124
125/* Few power values */
126#define R_CFG_BOOT 0x05
127
128/* some fields in R_CFG_BOOT */
129#define HFCLK_FREQ_19p2_MHZ (1 << 0)
130#define HFCLK_FREQ_26_MHZ (2 << 0)
131#define HFCLK_FREQ_38p4_MHZ (3 << 0)
132#define HIGH_PERF_SQ (1 << 3)
133#define CK32K_LOWPWR_EN (1 << 7)
134
135/*----------------------------------------------------------------------*/
136
137/* Structure for each TWL4030/TWL6030 Slave */
138struct twl_client {
139 struct i2c_client *client;
140 struct regmap *regmap;
141};
142
143/* mapping the module id to slave id and base address */
144struct twl_mapping {
145 unsigned char sid; /* Slave ID */
146 unsigned char base; /* base address */
147};
148
149struct twl_private {
150 bool ready; /* The core driver is ready to be used */
151 u32 twl_idcode; /* TWL IDCODE Register value */
152 unsigned int twl_id;
153
154 struct twl_mapping *twl_map;
155 struct twl_client *twl_modules;
156};
157
158static struct twl_private *twl_priv;
159
160static struct twl_mapping twl4030_map[] = {
161 /*
162 * NOTE: don't change this table without updating the
163 * <linux/mfd/twl.h> defines for TWL4030_MODULE_*
164 * so they continue to match the order in this table.
165 */
166
167 /* Common IPs */
168 { 0, TWL4030_BASEADD_USB },
169 { 1, TWL4030_BASEADD_PIH },
170 { 2, TWL4030_BASEADD_MAIN_CHARGE },
171 { 3, TWL4030_BASEADD_PM_MASTER },
172 { 3, TWL4030_BASEADD_PM_RECEIVER },
173
174 { 3, TWL4030_BASEADD_RTC },
175 { 2, TWL4030_BASEADD_PWM },
176 { 2, TWL4030_BASEADD_LED },
177 { 3, TWL4030_BASEADD_SECURED_REG },
178
179 /* TWL4030 specific IPs */
180 { 1, TWL4030_BASEADD_AUDIO_VOICE },
181 { 1, TWL4030_BASEADD_GPIO },
182 { 1, TWL4030_BASEADD_INTBR },
183 { 1, TWL4030_BASEADD_TEST },
184 { 2, TWL4030_BASEADD_KEYPAD },
185
186 { 2, TWL4030_BASEADD_MADC },
187 { 2, TWL4030_BASEADD_INTERRUPTS },
188 { 2, TWL4030_BASEADD_PRECHARGE },
189 { 3, TWL4030_BASEADD_BACKUP },
190 { 3, TWL4030_BASEADD_INT },
191
192 { 2, TWL5031_BASEADD_ACCESSORY },
193 { 2, TWL5031_BASEADD_INTERRUPTS },
194};
195
196static const struct reg_default twl4030_49_defaults[] = {
197 /* Audio Registers */
198 { 0x01, 0x00}, /* CODEC_MODE */
199 { 0x02, 0x00}, /* OPTION */
200 /* 0x03 Unused */
201 { 0x04, 0x00}, /* MICBIAS_CTL */
202 { 0x05, 0x00}, /* ANAMICL */
203 { 0x06, 0x00}, /* ANAMICR */
204 { 0x07, 0x00}, /* AVADC_CTL */
205 { 0x08, 0x00}, /* ADCMICSEL */
206 { 0x09, 0x00}, /* DIGMIXING */
207 { 0x0a, 0x0f}, /* ATXL1PGA */
208 { 0x0b, 0x0f}, /* ATXR1PGA */
209 { 0x0c, 0x0f}, /* AVTXL2PGA */
210 { 0x0d, 0x0f}, /* AVTXR2PGA */
211 { 0x0e, 0x00}, /* AUDIO_IF */
212 { 0x0f, 0x00}, /* VOICE_IF */
213 { 0x10, 0x3f}, /* ARXR1PGA */
214 { 0x11, 0x3f}, /* ARXL1PGA */
215 { 0x12, 0x3f}, /* ARXR2PGA */
216 { 0x13, 0x3f}, /* ARXL2PGA */
217 { 0x14, 0x25}, /* VRXPGA */
218 { 0x15, 0x00}, /* VSTPGA */
219 { 0x16, 0x00}, /* VRX2ARXPGA */
220 { 0x17, 0x00}, /* AVDAC_CTL */
221 { 0x18, 0x00}, /* ARX2VTXPGA */
222 { 0x19, 0x32}, /* ARXL1_APGA_CTL*/
223 { 0x1a, 0x32}, /* ARXR1_APGA_CTL*/
224 { 0x1b, 0x32}, /* ARXL2_APGA_CTL*/
225 { 0x1c, 0x32}, /* ARXR2_APGA_CTL*/
226 { 0x1d, 0x00}, /* ATX2ARXPGA */
227 { 0x1e, 0x00}, /* BT_IF */
228 { 0x1f, 0x55}, /* BTPGA */
229 { 0x20, 0x00}, /* BTSTPGA */
230 { 0x21, 0x00}, /* EAR_CTL */
231 { 0x22, 0x00}, /* HS_SEL */
232 { 0x23, 0x00}, /* HS_GAIN_SET */
233 { 0x24, 0x00}, /* HS_POPN_SET */
234 { 0x25, 0x00}, /* PREDL_CTL */
235 { 0x26, 0x00}, /* PREDR_CTL */
236 { 0x27, 0x00}, /* PRECKL_CTL */
237 { 0x28, 0x00}, /* PRECKR_CTL */
238 { 0x29, 0x00}, /* HFL_CTL */
239 { 0x2a, 0x00}, /* HFR_CTL */
240 { 0x2b, 0x05}, /* ALC_CTL */
241 { 0x2c, 0x00}, /* ALC_SET1 */
242 { 0x2d, 0x00}, /* ALC_SET2 */
243 { 0x2e, 0x00}, /* BOOST_CTL */
244 { 0x2f, 0x00}, /* SOFTVOL_CTL */
245 { 0x30, 0x13}, /* DTMF_FREQSEL */
246 { 0x31, 0x00}, /* DTMF_TONEXT1H */
247 { 0x32, 0x00}, /* DTMF_TONEXT1L */
248 { 0x33, 0x00}, /* DTMF_TONEXT2H */
249 { 0x34, 0x00}, /* DTMF_TONEXT2L */
250 { 0x35, 0x79}, /* DTMF_TONOFF */
251 { 0x36, 0x11}, /* DTMF_WANONOFF */
252 { 0x37, 0x00}, /* I2S_RX_SCRAMBLE_H */
253 { 0x38, 0x00}, /* I2S_RX_SCRAMBLE_M */
254 { 0x39, 0x00}, /* I2S_RX_SCRAMBLE_L */
255 { 0x3a, 0x06}, /* APLL_CTL */
256 { 0x3b, 0x00}, /* DTMF_CTL */
257 { 0x3c, 0x44}, /* DTMF_PGA_CTL2 (0x3C) */
258 { 0x3d, 0x69}, /* DTMF_PGA_CTL1 (0x3D) */
259 { 0x3e, 0x00}, /* MISC_SET_1 */
260 { 0x3f, 0x00}, /* PCMBTMUX */
261 /* 0x40 - 0x42 Unused */
262 { 0x43, 0x00}, /* RX_PATH_SEL */
263 { 0x44, 0x32}, /* VDL_APGA_CTL */
264 { 0x45, 0x00}, /* VIBRA_CTL */
265 { 0x46, 0x00}, /* VIBRA_SET */
266 { 0x47, 0x00}, /* VIBRA_PWM_SET */
267 { 0x48, 0x00}, /* ANAMIC_GAIN */
268 { 0x49, 0x00}, /* MISC_SET_2 */
269 /* End of Audio Registers */
270};
271
272static bool twl4030_49_nop_reg(struct device *dev, unsigned int reg)
273{
274 switch (reg) {
275 case 0x00:
276 case 0x03:
277 case 0x40:
278 case 0x41:
279 case 0x42:
280 return false;
281 default:
282 return true;
283 }
284}
285
286static const struct regmap_range twl4030_49_volatile_ranges[] = {
287 regmap_reg_range(TWL4030_BASEADD_TEST, 0xff),
288};
289
290static const struct regmap_access_table twl4030_49_volatile_table = {
291 .yes_ranges = twl4030_49_volatile_ranges,
292 .n_yes_ranges = ARRAY_SIZE(twl4030_49_volatile_ranges),
293};
294
295static const struct regmap_config twl4030_regmap_config[4] = {
296 {
297 /* Address 0x48 */
298 .reg_bits = 8,
299 .val_bits = 8,
300 .max_register = 0xff,
301 },
302 {
303 /* Address 0x49 */
304 .reg_bits = 8,
305 .val_bits = 8,
306 .max_register = 0xff,
307
308 .readable_reg = twl4030_49_nop_reg,
309 .writeable_reg = twl4030_49_nop_reg,
310
311 .volatile_table = &twl4030_49_volatile_table,
312
313 .reg_defaults = twl4030_49_defaults,
314 .num_reg_defaults = ARRAY_SIZE(twl4030_49_defaults),
315 .cache_type = REGCACHE_RBTREE,
316 },
317 {
318 /* Address 0x4a */
319 .reg_bits = 8,
320 .val_bits = 8,
321 .max_register = 0xff,
322 },
323 {
324 /* Address 0x4b */
325 .reg_bits = 8,
326 .val_bits = 8,
327 .max_register = 0xff,
328 },
329};
330
331static struct twl_mapping twl6030_map[] = {
332 /*
333 * NOTE: don't change this table without updating the
334 * <linux/mfd/twl.h> defines for TWL4030_MODULE_*
335 * so they continue to match the order in this table.
336 */
337
338 /* Common IPs */
339 { 1, TWL6030_BASEADD_USB },
340 { 1, TWL6030_BASEADD_PIH },
341 { 1, TWL6030_BASEADD_CHARGER },
342 { 0, TWL6030_BASEADD_PM_MASTER },
343 { 0, TWL6030_BASEADD_PM_SLAVE_MISC },
344
345 { 0, TWL6030_BASEADD_RTC },
346 { 1, TWL6030_BASEADD_PWM },
347 { 1, TWL6030_BASEADD_LED },
348 { 0, TWL6030_BASEADD_SECURED_REG },
349
350 /* TWL6030 specific IPs */
351 { 0, TWL6030_BASEADD_ZERO },
352 { 1, TWL6030_BASEADD_ZERO },
353 { 2, TWL6030_BASEADD_ZERO },
354 { 1, TWL6030_BASEADD_GPADC_CTRL },
355 { 1, TWL6030_BASEADD_GASGAUGE },
356};
357
358static const struct regmap_config twl6030_regmap_config[3] = {
359 {
360 /* Address 0x48 */
361 .reg_bits = 8,
362 .val_bits = 8,
363 .max_register = 0xff,
364 },
365 {
366 /* Address 0x49 */
367 .reg_bits = 8,
368 .val_bits = 8,
369 .max_register = 0xff,
370 },
371 {
372 /* Address 0x4a */
373 .reg_bits = 8,
374 .val_bits = 8,
375 .max_register = 0xff,
376 },
377};
378
379/*----------------------------------------------------------------------*/
380
381static inline int twl_get_num_slaves(void)
382{
383 if (twl_class_is_4030())
384 return 4; /* TWL4030 class have four slave address */
385 else
386 return 3; /* TWL6030 class have three slave address */
387}
388
389static inline int twl_get_last_module(void)
390{
391 if (twl_class_is_4030())
392 return TWL4030_MODULE_LAST;
393 else
394 return TWL6030_MODULE_LAST;
395}
396
397/* Exported Functions */
398
399unsigned int twl_rev(void)
400{
401 return twl_priv ? twl_priv->twl_id : 0;
402}
403EXPORT_SYMBOL(twl_rev);
404
405/**
406 * twl_get_regmap - Get the regmap associated with the given module
407 * @mod_no: module number
408 *
409 * Returns the regmap pointer or NULL in case of failure.
410 */
411static struct regmap *twl_get_regmap(u8 mod_no)
412{
413 int sid;
414 struct twl_client *twl;
415
416 if (unlikely(!twl_priv || !twl_priv->ready)) {
417 pr_err("%s: not initialized\n", DRIVER_NAME);
418 return NULL;
419 }
420 if (unlikely(mod_no >= twl_get_last_module())) {
421 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
422 return NULL;
423 }
424
425 sid = twl_priv->twl_map[mod_no].sid;
426 twl = &twl_priv->twl_modules[sid];
427
428 return twl->regmap;
429}
430
431/**
432 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
433 * @mod_no: module number
434 * @value: an array of num_bytes+1 containing data to write
435 * @reg: register address (just offset will do)
436 * @num_bytes: number of bytes to transfer
437 *
438 * Returns 0 on success or else a negative error code.
439 */
440int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
441{
442 struct regmap *regmap = twl_get_regmap(mod_no);
443 int ret;
444
445 if (!regmap)
446 return -EPERM;
447
448 ret = regmap_bulk_write(regmap, twl_priv->twl_map[mod_no].base + reg,
449 value, num_bytes);
450
451 if (ret)
452 pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n",
453 DRIVER_NAME, mod_no, reg, num_bytes);
454
455 return ret;
456}
457EXPORT_SYMBOL(twl_i2c_write);
458
459/**
460 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
461 * @mod_no: module number
462 * @value: an array of num_bytes containing data to be read
463 * @reg: register address (just offset will do)
464 * @num_bytes: number of bytes to transfer
465 *
466 * Returns 0 on success or else a negative error code.
467 */
468int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
469{
470 struct regmap *regmap = twl_get_regmap(mod_no);
471 int ret;
472
473 if (!regmap)
474 return -EPERM;
475
476 ret = regmap_bulk_read(regmap, twl_priv->twl_map[mod_no].base + reg,
477 value, num_bytes);
478
479 if (ret)
480 pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n",
481 DRIVER_NAME, mod_no, reg, num_bytes);
482
483 return ret;
484}
485EXPORT_SYMBOL(twl_i2c_read);
486
487/**
488 * twl_set_regcache_bypass - Configure the regcache bypass for the regmap associated
489 * with the module
490 * @mod_no: module number
491 * @enable: Regcache bypass state
492 *
493 * Returns 0 else failure.
494 */
495int twl_set_regcache_bypass(u8 mod_no, bool enable)
496{
497 struct regmap *regmap = twl_get_regmap(mod_no);
498
499 if (!regmap)
500 return -EPERM;
501
502 regcache_cache_bypass(regmap, enable);
503
504 return 0;
505}
506EXPORT_SYMBOL(twl_set_regcache_bypass);
507
508/*----------------------------------------------------------------------*/
509
510/**
511 * twl_read_idcode_register - API to read the IDCODE register.
512 *
513 * Unlocks the IDCODE register and read the 32 bit value.
514 */
515static int twl_read_idcode_register(void)
516{
517 int err;
518
519 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
520 REG_UNLOCK_TEST_REG);
521 if (err) {
522 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
523 goto fail;
524 }
525
526 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode),
527 REG_IDCODE_7_0, 4);
528 if (err) {
529 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
530 goto fail;
531 }
532
533 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
534 if (err)
535 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
536fail:
537 return err;
538}
539
540/**
541 * twl_get_type - API to get TWL Si type.
542 *
543 * Api to get the TWL Si type from IDCODE value.
544 */
545int twl_get_type(void)
546{
547 return TWL_SIL_TYPE(twl_priv->twl_idcode);
548}
549EXPORT_SYMBOL_GPL(twl_get_type);
550
551/**
552 * twl_get_version - API to get TWL Si version.
553 *
554 * Api to get the TWL Si version from IDCODE value.
555 */
556int twl_get_version(void)
557{
558 return TWL_SIL_REV(twl_priv->twl_idcode);
559}
560EXPORT_SYMBOL_GPL(twl_get_version);
561
562/**
563 * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate.
564 *
565 * Api to get the TWL HFCLK rate based on BOOT_CFG register.
566 */
567int twl_get_hfclk_rate(void)
568{
569 u8 ctrl;
570 int rate;
571
572 twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT);
573
574 switch (ctrl & 0x3) {
575 case HFCLK_FREQ_19p2_MHZ:
576 rate = 19200000;
577 break;
578 case HFCLK_FREQ_26_MHZ:
579 rate = 26000000;
580 break;
581 case HFCLK_FREQ_38p4_MHZ:
582 rate = 38400000;
583 break;
584 default:
585 pr_err("TWL4030: HFCLK is not configured\n");
586 rate = -EINVAL;
587 break;
588 }
589
590 return rate;
591}
592EXPORT_SYMBOL_GPL(twl_get_hfclk_rate);
593
594static struct device *
595add_numbered_child(unsigned mod_no, const char *name, int num,
596 void *pdata, unsigned pdata_len,
597 bool can_wakeup, int irq0, int irq1)
598{
599 struct platform_device *pdev;
600 struct twl_client *twl;
601 int status, sid;
602
603 if (unlikely(mod_no >= twl_get_last_module())) {
604 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
605 return ERR_PTR(-EPERM);
606 }
607 sid = twl_priv->twl_map[mod_no].sid;
608 twl = &twl_priv->twl_modules[sid];
609
610 pdev = platform_device_alloc(name, num);
611 if (!pdev)
612 return ERR_PTR(-ENOMEM);
613
614 pdev->dev.parent = &twl->client->dev;
615
616 if (pdata) {
617 status = platform_device_add_data(pdev, pdata, pdata_len);
618 if (status < 0) {
619 dev_dbg(&pdev->dev, "can't add platform_data\n");
620 goto put_device;
621 }
622 }
623
624 if (irq0) {
625 struct resource r[2] = {
626 { .start = irq0, .flags = IORESOURCE_IRQ, },
627 { .start = irq1, .flags = IORESOURCE_IRQ, },
628 };
629
630 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
631 if (status < 0) {
632 dev_dbg(&pdev->dev, "can't add irqs\n");
633 goto put_device;
634 }
635 }
636
637 status = platform_device_add(pdev);
638 if (status)
639 goto put_device;
640
641 device_init_wakeup(&pdev->dev, can_wakeup);
642
643 return &pdev->dev;
644
645put_device:
646 platform_device_put(pdev);
647 dev_err(&twl->client->dev, "failed to add device %s\n", name);
648 return ERR_PTR(status);
649}
650
651static inline struct device *add_child(unsigned mod_no, const char *name,
652 void *pdata, unsigned pdata_len,
653 bool can_wakeup, int irq0, int irq1)
654{
655 return add_numbered_child(mod_no, name, -1, pdata, pdata_len,
656 can_wakeup, irq0, irq1);
657}
658
659/*----------------------------------------------------------------------*/
660
661/*
662 * These three functions initialize the on-chip clock framework,
663 * letting it generate the right frequencies for USB, MADC, and
664 * other purposes.
665 */
666static inline int protect_pm_master(void)
667{
668 int e = 0;
669
670 e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
671 TWL4030_PM_MASTER_PROTECT_KEY);
672 return e;
673}
674
675static inline int unprotect_pm_master(void)
676{
677 int e = 0;
678
679 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
680 TWL4030_PM_MASTER_PROTECT_KEY);
681 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
682 TWL4030_PM_MASTER_PROTECT_KEY);
683
684 return e;
685}
686
687static void clocks_init(struct device *dev)
688{
689 int e = 0;
690 struct clk *osc;
691 u32 rate;
692 u8 ctrl = HFCLK_FREQ_26_MHZ;
693
694 osc = clk_get(dev, "fck");
695 if (IS_ERR(osc)) {
696 printk(KERN_WARNING "Skipping twl internal clock init and "
697 "using bootloader value (unknown osc rate)\n");
698 return;
699 }
700
701 rate = clk_get_rate(osc);
702 clk_put(osc);
703
704 switch (rate) {
705 case 19200000:
706 ctrl = HFCLK_FREQ_19p2_MHZ;
707 break;
708 case 26000000:
709 ctrl = HFCLK_FREQ_26_MHZ;
710 break;
711 case 38400000:
712 ctrl = HFCLK_FREQ_38p4_MHZ;
713 break;
714 }
715
716 ctrl |= HIGH_PERF_SQ;
717
718 e |= unprotect_pm_master();
719 /* effect->MADC+USB ck en */
720 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
721 e |= protect_pm_master();
722
723 if (e < 0)
724 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
725}
726
727/*----------------------------------------------------------------------*/
728
729
730static void twl_remove(struct i2c_client *client)
731{
732 unsigned i, num_slaves;
733
734 if (twl_class_is_4030())
735 twl4030_exit_irq();
736 else
737 twl6030_exit_irq();
738
739 num_slaves = twl_get_num_slaves();
740 for (i = 0; i < num_slaves; i++) {
741 struct twl_client *twl = &twl_priv->twl_modules[i];
742
743 if (twl->client && twl->client != client)
744 i2c_unregister_device(twl->client);
745 twl->client = NULL;
746 }
747 twl_priv->ready = false;
748}
749
750static struct of_dev_auxdata twl_auxdata_lookup[] = {
751 OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL),
752 { /* sentinel */ },
753};
754
755/* NOTE: This driver only handles a single twl4030/tps659x0 chip */
756static int
757twl_probe(struct i2c_client *client)
758{
759 const struct i2c_device_id *id = i2c_client_get_device_id(client);
760 struct device_node *node = client->dev.of_node;
761 struct platform_device *pdev;
762 const struct regmap_config *twl_regmap_config;
763 int irq_base = 0;
764 int status;
765 unsigned i, num_slaves;
766
767 if (!node) {
768 dev_err(&client->dev, "no platform data\n");
769 return -EINVAL;
770 }
771
772 if (twl_priv) {
773 dev_dbg(&client->dev, "only one instance of %s allowed\n",
774 DRIVER_NAME);
775 return -EBUSY;
776 }
777
778 pdev = platform_device_alloc(DRIVER_NAME, -1);
779 if (!pdev) {
780 dev_err(&client->dev, "can't alloc pdev\n");
781 return -ENOMEM;
782 }
783
784 status = platform_device_add(pdev);
785 if (status) {
786 platform_device_put(pdev);
787 return status;
788 }
789
790 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
791 dev_dbg(&client->dev, "can't talk I2C?\n");
792 status = -EIO;
793 goto free;
794 }
795
796 twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private),
797 GFP_KERNEL);
798 if (!twl_priv) {
799 status = -ENOMEM;
800 goto free;
801 }
802
803 if ((id->driver_data) & TWL6030_CLASS) {
804 twl_priv->twl_id = TWL6030_CLASS_ID;
805 twl_priv->twl_map = &twl6030_map[0];
806 /* The charger base address is different in twl6032 */
807 if ((id->driver_data) & TWL6032_SUBCLASS)
808 twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base =
809 TWL6032_BASEADD_CHARGER;
810 twl_regmap_config = twl6030_regmap_config;
811 } else {
812 twl_priv->twl_id = TWL4030_CLASS_ID;
813 twl_priv->twl_map = &twl4030_map[0];
814 twl_regmap_config = twl4030_regmap_config;
815 }
816
817 num_slaves = twl_get_num_slaves();
818 twl_priv->twl_modules = devm_kcalloc(&client->dev,
819 num_slaves,
820 sizeof(struct twl_client),
821 GFP_KERNEL);
822 if (!twl_priv->twl_modules) {
823 status = -ENOMEM;
824 goto free;
825 }
826
827 for (i = 0; i < num_slaves; i++) {
828 struct twl_client *twl = &twl_priv->twl_modules[i];
829
830 if (i == 0) {
831 twl->client = client;
832 } else {
833 twl->client = i2c_new_dummy_device(client->adapter,
834 client->addr + i);
835 if (IS_ERR(twl->client)) {
836 dev_err(&client->dev,
837 "can't attach client %d\n", i);
838 status = PTR_ERR(twl->client);
839 goto fail;
840 }
841 }
842
843 twl->regmap = devm_regmap_init_i2c(twl->client,
844 &twl_regmap_config[i]);
845 if (IS_ERR(twl->regmap)) {
846 status = PTR_ERR(twl->regmap);
847 dev_err(&client->dev,
848 "Failed to allocate regmap %d, err: %d\n", i,
849 status);
850 goto fail;
851 }
852 }
853
854 twl_priv->ready = true;
855
856 /* setup clock framework */
857 clocks_init(&client->dev);
858
859 /* read TWL IDCODE Register */
860 if (twl_class_is_4030()) {
861 status = twl_read_idcode_register();
862 WARN(status < 0, "Error: reading twl_idcode register value\n");
863 }
864
865 /* Maybe init the T2 Interrupt subsystem */
866 if (client->irq) {
867 if (twl_class_is_4030()) {
868 twl4030_init_chip_irq(id->name);
869 irq_base = twl4030_init_irq(&client->dev, client->irq);
870 } else {
871 irq_base = twl6030_init_irq(&client->dev, client->irq);
872 }
873
874 if (irq_base < 0) {
875 status = irq_base;
876 goto fail;
877 }
878 }
879
880 /*
881 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
882 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
883 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
884 *
885 * Also, always enable SmartReflex bit as that's needed for omaps to
886 * do anything over I2C4 for voltage scaling even if SmartReflex
887 * is disabled. Without the SmartReflex bit omap sys_clkreq idle
888 * signal will never trigger for retention idle.
889 */
890 if (twl_class_is_4030()) {
891 u8 temp;
892
893 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
894 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
895 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
896 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
897
898 twl_i2c_read_u8(TWL_MODULE_PM_RECEIVER, &temp,
899 TWL4030_DCDC_GLOBAL_CFG);
900 temp |= SMARTREFLEX_ENABLE;
901 twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, temp,
902 TWL4030_DCDC_GLOBAL_CFG);
903 }
904
905 status = of_platform_populate(node, NULL, twl_auxdata_lookup,
906 &client->dev);
907
908fail:
909 if (status < 0)
910 twl_remove(client);
911free:
912 if (status < 0)
913 platform_device_unregister(pdev);
914
915 return status;
916}
917
918static int __maybe_unused twl_suspend(struct device *dev)
919{
920 struct i2c_client *client = to_i2c_client(dev);
921
922 if (client->irq)
923 disable_irq(client->irq);
924
925 return 0;
926}
927
928static int __maybe_unused twl_resume(struct device *dev)
929{
930 struct i2c_client *client = to_i2c_client(dev);
931
932 if (client->irq)
933 enable_irq(client->irq);
934
935 return 0;
936}
937
938static SIMPLE_DEV_PM_OPS(twl_dev_pm_ops, twl_suspend, twl_resume);
939
940static const struct i2c_device_id twl_ids[] = {
941 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
942 { "twl5030", 0 }, /* T2 updated */
943 { "twl5031", TWL5031 }, /* TWL5030 updated */
944 { "tps65950", 0 }, /* catalog version of twl5030 */
945 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
946 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
947 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED
948 and vibrator. Charger in USB module*/
949 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
950 { "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */
951 { /* end of list */ },
952};
953
954/* One Client Driver , 4 Clients */
955static struct i2c_driver twl_driver = {
956 .driver.name = DRIVER_NAME,
957 .driver.pm = &twl_dev_pm_ops,
958 .id_table = twl_ids,
959 .probe_new = twl_probe,
960 .remove = twl_remove,
961};
962builtin_i2c_driver(twl_driver);