2 * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM
3 * and audio CODEC devices
5 * Copyright (C) 2005-2006 Texas Instruments, Inc.
7 * Modifications to defer interrupt handling to a kernel thread:
8 * Copyright (C) 2006 MontaVista Software, Inc.
10 * Based on tlv320aic23.c:
11 * Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
13 * Code cleanup and modifications to IRQ handler.
14 * by syed khasim <x0khasim@ti.com>
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.
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.
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
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>
37 #include <linux/regulator/machine.h>
39 #include <linux/i2c.h>
40 #include <linux/i2c/twl.h>
42 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
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.
52 * This driver core provides genirq support for the interrupts emitted,
53 * by the various modules, and exports register access primitives.
55 * FIXME this driver currently requires use of the first interrupt line
56 * (and associated registers).
59 #define DRIVER_NAME "twl"
61 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
62 #define twl_has_keypad() true
64 #define twl_has_keypad() false
67 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
68 #define twl_has_gpio() true
70 #define twl_has_gpio() false
73 #if defined(CONFIG_REGULATOR_TWL4030) \
74 || defined(CONFIG_REGULATOR_TWL4030_MODULE)
75 #define twl_has_regulator() true
77 #define twl_has_regulator() false
80 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
81 #define twl_has_madc() true
83 #define twl_has_madc() false
86 #ifdef CONFIG_TWL4030_POWER
87 #define twl_has_power() true
89 #define twl_has_power() false
92 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
93 #define twl_has_rtc() true
95 #define twl_has_rtc() false
98 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE)
99 #define twl_has_usb() true
101 #define twl_has_usb() false
104 #if defined(CONFIG_TWL4030_WATCHDOG) || \
105 defined(CONFIG_TWL4030_WATCHDOG_MODULE)
106 #define twl_has_watchdog() true
108 #define twl_has_watchdog() false
111 #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\
112 defined(CONFIG_SND_SOC_TWL6030) || defined(CONFIG_SND_SOC_TWL6030_MODULE)
113 #define twl_has_codec() true
115 #define twl_has_codec() false
118 /* Triton Core internal information (BEGIN) */
120 /* Last - for index max*/
121 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
123 #define TWL_NUM_SLAVES 4
125 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
126 || defined(CONFIG_INPUT_TWL4030_PWBUTTON_MODULE)
127 #define twl_has_pwrbutton() true
129 #define twl_has_pwrbutton() false
132 #define SUB_CHIP_ID0 0
133 #define SUB_CHIP_ID1 1
134 #define SUB_CHIP_ID2 2
135 #define SUB_CHIP_ID3 3
137 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
139 /* Base Address defns for twl4030_map[] */
141 /* subchip/slave 0 - USB ID */
142 #define TWL4030_BASEADD_USB 0x0000
144 /* subchip/slave 1 - AUD ID */
145 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000
146 #define TWL4030_BASEADD_GPIO 0x0098
147 #define TWL4030_BASEADD_INTBR 0x0085
148 #define TWL4030_BASEADD_PIH 0x0080
149 #define TWL4030_BASEADD_TEST 0x004C
151 /* subchip/slave 2 - AUX ID */
152 #define TWL4030_BASEADD_INTERRUPTS 0x00B9
153 #define TWL4030_BASEADD_LED 0x00EE
154 #define TWL4030_BASEADD_MADC 0x0000
155 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074
156 #define TWL4030_BASEADD_PRECHARGE 0x00AA
157 #define TWL4030_BASEADD_PWM0 0x00F8
158 #define TWL4030_BASEADD_PWM1 0x00FB
159 #define TWL4030_BASEADD_PWMA 0x00EF
160 #define TWL4030_BASEADD_PWMB 0x00F1
161 #define TWL4030_BASEADD_KEYPAD 0x00D2
163 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
164 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
167 /* subchip/slave 3 - POWER ID */
168 #define TWL4030_BASEADD_BACKUP 0x0014
169 #define TWL4030_BASEADD_INT 0x002E
170 #define TWL4030_BASEADD_PM_MASTER 0x0036
171 #define TWL4030_BASEADD_PM_RECEIVER 0x005B
172 #define TWL4030_BASEADD_RTC 0x001C
173 #define TWL4030_BASEADD_SECURED_REG 0x0000
175 /* Triton Core internal information (END) */
178 /* subchip/slave 0 0x48 - POWER */
179 #define TWL6030_BASEADD_RTC 0x0000
180 #define TWL6030_BASEADD_MEM 0x0017
181 #define TWL6030_BASEADD_PM_MASTER 0x001F
182 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
183 #define TWL6030_BASEADD_PM_MISC 0x00E2
184 #define TWL6030_BASEADD_PM_PUPD 0x00F0
186 /* subchip/slave 1 0x49 - FEATURE */
187 #define TWL6030_BASEADD_USB 0x0000
188 #define TWL6030_BASEADD_GPADC_CTRL 0x002E
189 #define TWL6030_BASEADD_AUX 0x0090
190 #define TWL6030_BASEADD_PWM 0x00BA
191 #define TWL6030_BASEADD_GASGAUGE 0x00C0
192 #define TWL6030_BASEADD_PIH 0x00D0
193 #define TWL6030_BASEADD_CHARGER 0x00E0
195 /* subchip/slave 2 0x4A - DFT */
196 #define TWL6030_BASEADD_DIEID 0x00C0
198 /* subchip/slave 3 0x4B - AUDIO */
199 #define TWL6030_BASEADD_AUDIO 0x0000
200 #define TWL6030_BASEADD_RSV 0x0000
202 /* Few power values */
203 #define R_CFG_BOOT 0x05
204 #define R_PROTECT_KEY 0x0E
206 /* access control values for R_PROTECT_KEY */
207 #define KEY_UNLOCK1 0xce
208 #define KEY_UNLOCK2 0xec
209 #define KEY_LOCK 0x00
211 /* some fields in R_CFG_BOOT */
212 #define HFCLK_FREQ_19p2_MHZ (1 << 0)
213 #define HFCLK_FREQ_26_MHZ (2 << 0)
214 #define HFCLK_FREQ_38p4_MHZ (3 << 0)
215 #define HIGH_PERF_SQ (1 << 3)
216 #define CK32K_LOWPWR_EN (1 << 7)
219 /* chip-specific feature flags, for i2c_device_id.driver_data */
220 #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
221 #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
222 #define TWL5031 BIT(2) /* twl5031 has different registers */
223 #define TWL6030_CLASS BIT(3) /* TWL6030 class */
225 /*----------------------------------------------------------------------*/
227 /* is driver active, bound to a chip? */
230 static unsigned int twl_id;
231 unsigned int twl_rev(void)
235 EXPORT_SYMBOL(twl_rev);
237 /* Structure for each TWL4030/TWL6030 Slave */
239 struct i2c_client *client;
242 /* max numb of i2c_msg required is for read =2 */
243 struct i2c_msg xfer_msg[2];
245 /* To lock access to xfer_msg */
246 struct mutex xfer_lock;
249 static struct twl_client twl_modules[TWL_NUM_SLAVES];
252 /* mapping the module id to slave id and base address */
254 unsigned char sid; /* Slave ID */
255 unsigned char base; /* base address */
257 struct twl_mapping *twl_map;
259 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
261 * NOTE: don't change this table without updating the
262 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
263 * so they continue to match the order in this table.
266 { 0, TWL4030_BASEADD_USB },
268 { 1, TWL4030_BASEADD_AUDIO_VOICE },
269 { 1, TWL4030_BASEADD_GPIO },
270 { 1, TWL4030_BASEADD_INTBR },
271 { 1, TWL4030_BASEADD_PIH },
272 { 1, TWL4030_BASEADD_TEST },
274 { 2, TWL4030_BASEADD_KEYPAD },
275 { 2, TWL4030_BASEADD_MADC },
276 { 2, TWL4030_BASEADD_INTERRUPTS },
277 { 2, TWL4030_BASEADD_LED },
278 { 2, TWL4030_BASEADD_MAIN_CHARGE },
279 { 2, TWL4030_BASEADD_PRECHARGE },
280 { 2, TWL4030_BASEADD_PWM0 },
281 { 2, TWL4030_BASEADD_PWM1 },
282 { 2, TWL4030_BASEADD_PWMA },
283 { 2, TWL4030_BASEADD_PWMB },
284 { 2, TWL5031_BASEADD_ACCESSORY },
285 { 2, TWL5031_BASEADD_INTERRUPTS },
287 { 3, TWL4030_BASEADD_BACKUP },
288 { 3, TWL4030_BASEADD_INT },
289 { 3, TWL4030_BASEADD_PM_MASTER },
290 { 3, TWL4030_BASEADD_PM_RECEIVER },
291 { 3, TWL4030_BASEADD_RTC },
292 { 3, TWL4030_BASEADD_SECURED_REG },
295 static struct twl_mapping twl6030_map[] = {
297 * NOTE: don't change this table without updating the
298 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
299 * so they continue to match the order in this table.
301 { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
302 { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
303 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
304 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
305 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
307 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
308 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
309 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
310 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
311 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
313 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
314 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
315 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
316 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
317 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
319 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
320 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
321 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
322 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
323 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
325 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
326 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
329 /*----------------------------------------------------------------------*/
331 /* Exported Functions */
334 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
335 * @mod_no: module number
336 * @value: an array of num_bytes+1 containing data to write
337 * @reg: register address (just offset will do)
338 * @num_bytes: number of bytes to transfer
340 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
341 * valid data starts at Offset 1.
343 * Returns the result of operation - 0 is success
345 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
349 struct twl_client *twl;
352 if (unlikely(mod_no > TWL_MODULE_LAST)) {
353 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
356 sid = twl_map[mod_no].sid;
357 twl = &twl_modules[sid];
359 if (unlikely(!inuse)) {
360 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
363 mutex_lock(&twl->xfer_lock);
365 * [MSG1]: fill the register address data
366 * fill the data Tx buffer
368 msg = &twl->xfer_msg[0];
369 msg->addr = twl->address;
370 msg->len = num_bytes + 1;
373 /* over write the first byte of buffer with the register address */
374 *value = twl_map[mod_no].base + reg;
375 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
376 mutex_unlock(&twl->xfer_lock);
378 /* i2c_transfer returns number of messages transferred */
380 pr_err("%s: i2c_write failed to transfer all messages\n",
390 EXPORT_SYMBOL(twl_i2c_write);
393 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
394 * @mod_no: module number
395 * @value: an array of num_bytes containing data to be read
396 * @reg: register address (just offset will do)
397 * @num_bytes: number of bytes to transfer
399 * Returns result of operation - num_bytes is success else failure.
401 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
406 struct twl_client *twl;
409 if (unlikely(mod_no > TWL_MODULE_LAST)) {
410 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
413 sid = twl_map[mod_no].sid;
414 twl = &twl_modules[sid];
416 if (unlikely(!inuse)) {
417 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
420 mutex_lock(&twl->xfer_lock);
421 /* [MSG1] fill the register address data */
422 msg = &twl->xfer_msg[0];
423 msg->addr = twl->address;
425 msg->flags = 0; /* Read the register value */
426 val = twl_map[mod_no].base + reg;
428 /* [MSG2] fill the data rx buffer */
429 msg = &twl->xfer_msg[1];
430 msg->addr = twl->address;
431 msg->flags = I2C_M_RD; /* Read the register value */
432 msg->len = num_bytes; /* only n bytes */
434 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
435 mutex_unlock(&twl->xfer_lock);
437 /* i2c_transfer returns number of messages transferred */
439 pr_err("%s: i2c_read failed to transfer all messages\n",
449 EXPORT_SYMBOL(twl_i2c_read);
452 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
453 * @mod_no: module number
454 * @value: the value to be written 8 bit
455 * @reg: register address (just offset will do)
457 * Returns result of operation - 0 is success
459 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
462 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
463 u8 temp_buffer[2] = { 0 };
464 /* offset 1 contains the data */
465 temp_buffer[1] = value;
466 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
468 EXPORT_SYMBOL(twl_i2c_write_u8);
471 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
472 * @mod_no: module number
473 * @value: the value read 8 bit
474 * @reg: register address (just offset will do)
476 * Returns result of operation - 0 is success
478 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
480 return twl_i2c_read(mod_no, value, reg, 1);
482 EXPORT_SYMBOL(twl_i2c_read_u8);
484 /*----------------------------------------------------------------------*/
486 static struct device *
487 add_numbered_child(unsigned chip, const char *name, int num,
488 void *pdata, unsigned pdata_len,
489 bool can_wakeup, int irq0, int irq1)
491 struct platform_device *pdev;
492 struct twl_client *twl = &twl_modules[chip];
495 pdev = platform_device_alloc(name, num);
497 dev_dbg(&twl->client->dev, "can't alloc dev\n");
502 device_init_wakeup(&pdev->dev, can_wakeup);
503 pdev->dev.parent = &twl->client->dev;
506 status = platform_device_add_data(pdev, pdata, pdata_len);
508 dev_dbg(&pdev->dev, "can't add platform_data\n");
514 struct resource r[2] = {
515 { .start = irq0, .flags = IORESOURCE_IRQ, },
516 { .start = irq1, .flags = IORESOURCE_IRQ, },
519 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
521 dev_dbg(&pdev->dev, "can't add irqs\n");
526 status = platform_device_add(pdev);
530 platform_device_put(pdev);
531 dev_err(&twl->client->dev, "can't add %s dev\n", name);
532 return ERR_PTR(status);
537 static inline struct device *add_child(unsigned chip, const char *name,
538 void *pdata, unsigned pdata_len,
539 bool can_wakeup, int irq0, int irq1)
541 return add_numbered_child(chip, name, -1, pdata, pdata_len,
542 can_wakeup, irq0, irq1);
545 static struct device *
546 add_regulator_linked(int num, struct regulator_init_data *pdata,
547 struct regulator_consumer_supply *consumers,
548 unsigned num_consumers)
550 unsigned sub_chip_id;
551 /* regulator framework demands init_data ... */
556 pdata->consumer_supplies = consumers;
557 pdata->num_consumer_supplies = num_consumers;
560 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
561 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
562 return add_numbered_child(sub_chip_id, "twl_reg", num,
563 pdata, sizeof(*pdata), false, 0, 0);
566 static struct device *
567 add_regulator(int num, struct regulator_init_data *pdata)
569 return add_regulator_linked(num, pdata, NULL, 0);
573 * NOTE: We know the first 8 IRQs after pdata->base_irq are
574 * for the PIH, and the next are for the PWR_INT SIH, since
575 * that's how twl_init_irq() sets things up.
579 add_children(struct twl4030_platform_data *pdata, unsigned long features)
581 struct device *child;
582 unsigned sub_chip_id;
584 if (twl_has_gpio() && pdata->gpio) {
585 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
586 pdata->gpio, sizeof(*pdata->gpio),
587 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
589 return PTR_ERR(child);
592 if (twl_has_keypad() && pdata->keypad) {
593 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
594 pdata->keypad, sizeof(*pdata->keypad),
595 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
597 return PTR_ERR(child);
600 if (twl_has_madc() && pdata->madc) {
601 child = add_child(2, "twl4030_madc",
602 pdata->madc, sizeof(*pdata->madc),
603 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
605 return PTR_ERR(child);
610 * REVISIT platform_data here currently might expose the
611 * "msecure" line ... but for now we just expect board
612 * setup to tell the chip "it's always ok to SET_TIME".
613 * Eventually, Linux might become more aware of such
614 * HW security concerns, and "least privilege".
616 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
617 child = add_child(sub_chip_id, "twl_rtc",
619 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
621 return PTR_ERR(child);
624 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
626 static struct regulator_consumer_supply usb1v5 = {
629 static struct regulator_consumer_supply usb1v8 = {
632 static struct regulator_consumer_supply usb3v1 = {
636 /* First add the regulators so that they can be used by transceiver */
637 if (twl_has_regulator()) {
638 /* this is a template that gets copied */
639 struct regulator_init_data usb_fixed = {
640 .constraints.valid_modes_mask =
641 REGULATOR_MODE_NORMAL
642 | REGULATOR_MODE_STANDBY,
643 .constraints.valid_ops_mask =
644 REGULATOR_CHANGE_MODE
645 | REGULATOR_CHANGE_STATUS,
648 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
649 &usb_fixed, &usb1v5, 1);
651 return PTR_ERR(child);
653 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
654 &usb_fixed, &usb1v8, 1);
656 return PTR_ERR(child);
658 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
659 &usb_fixed, &usb3v1, 1);
661 return PTR_ERR(child);
665 child = add_child(0, "twl4030_usb",
666 pdata->usb, sizeof(*pdata->usb),
668 /* irq0 = USB_PRES, irq1 = USB */
669 pdata->irq_base + USB_PRES_INTR_OFFSET,
670 pdata->irq_base + USB_INTR_OFFSET);
673 return PTR_ERR(child);
675 /* we need to connect regulators to this transceiver */
676 if (twl_has_regulator() && child) {
683 if (twl_has_watchdog()) {
684 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
686 return PTR_ERR(child);
689 if (twl_has_pwrbutton()) {
690 child = add_child(1, "twl4030_pwrbutton",
691 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
693 return PTR_ERR(child);
696 if (twl_has_codec() && pdata->codec && twl_class_is_4030()) {
697 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
698 child = add_child(sub_chip_id, "twl4030_codec",
699 pdata->codec, sizeof(*pdata->codec),
702 return PTR_ERR(child);
706 if (twl_has_codec() && pdata->codec && twl_class_is_6030()) {
707 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
708 child = add_child(sub_chip_id, "twl6030_codec",
709 pdata->codec, sizeof(*pdata->codec),
712 return PTR_ERR(child);
715 /* twl4030 regulators */
716 if (twl_has_regulator() && twl_class_is_4030()) {
717 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1);
719 return PTR_ERR(child);
721 child = add_regulator(TWL4030_REG_VIO, pdata->vio);
723 return PTR_ERR(child);
725 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1);
727 return PTR_ERR(child);
729 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2);
731 return PTR_ERR(child);
733 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1);
735 return PTR_ERR(child);
737 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac);
739 return PTR_ERR(child);
741 child = add_regulator((features & TWL4030_VAUX2)
742 ? TWL4030_REG_VAUX2_4030
746 return PTR_ERR(child);
748 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1);
750 return PTR_ERR(child);
752 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2);
754 return PTR_ERR(child);
756 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig);
758 return PTR_ERR(child);
761 /* maybe add LDOs that are omitted on cost-reduced parts */
762 if (twl_has_regulator() && !(features & TPS_SUBSET)
763 && twl_class_is_4030()) {
764 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2);
766 return PTR_ERR(child);
768 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2);
770 return PTR_ERR(child);
772 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim);
774 return PTR_ERR(child);
776 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1);
778 return PTR_ERR(child);
780 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3);
782 return PTR_ERR(child);
784 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4);
786 return PTR_ERR(child);
789 /* twl6030 regulators */
790 if (twl_has_regulator() && twl_class_is_6030()) {
791 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc);
793 return PTR_ERR(child);
795 child = add_regulator(TWL6030_REG_VPP, pdata->vpp);
797 return PTR_ERR(child);
799 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim);
801 return PTR_ERR(child);
803 child = add_regulator(TWL6030_REG_VANA, pdata->vana);
805 return PTR_ERR(child);
807 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio);
809 return PTR_ERR(child);
811 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac);
813 return PTR_ERR(child);
815 child = add_regulator(TWL6030_REG_VUSB, pdata->vusb);
817 return PTR_ERR(child);
819 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1);
821 return PTR_ERR(child);
823 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2);
825 return PTR_ERR(child);
827 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3);
829 return PTR_ERR(child);
835 /*----------------------------------------------------------------------*/
838 * These three functions initialize the on-chip clock framework,
839 * letting it generate the right frequencies for USB, MADC, and
842 static inline int __init protect_pm_master(void)
846 e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_LOCK,
851 static inline int __init unprotect_pm_master(void)
855 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK1,
857 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK2,
862 static void clocks_init(struct device *dev,
863 struct twl4030_clock_init_data *clock)
868 u8 ctrl = HFCLK_FREQ_26_MHZ;
870 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
871 if (cpu_is_omap2430())
872 osc = clk_get(dev, "osc_ck");
874 osc = clk_get(dev, "osc_sys_ck");
877 printk(KERN_WARNING "Skipping twl internal clock init and "
878 "using bootloader value (unknown osc rate)\n");
882 rate = clk_get_rate(osc);
886 /* REVISIT for non-OMAP systems, pass the clock rate from
887 * board init code, using platform_data.
891 printk(KERN_WARNING "Skipping twl internal clock init and "
892 "using bootloader value (unknown osc rate)\n");
899 ctrl = HFCLK_FREQ_19p2_MHZ;
902 ctrl = HFCLK_FREQ_26_MHZ;
905 ctrl = HFCLK_FREQ_38p4_MHZ;
909 ctrl |= HIGH_PERF_SQ;
910 if (clock && clock->ck32k_lowpwr_enable)
911 ctrl |= CK32K_LOWPWR_EN;
913 e |= unprotect_pm_master();
914 /* effect->MADC+USB ck en */
915 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
916 e |= protect_pm_master();
919 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
922 /*----------------------------------------------------------------------*/
924 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
925 int twl4030_exit_irq(void);
926 int twl4030_init_chip_irq(const char *chip);
927 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
928 int twl6030_exit_irq(void);
930 static int twl_remove(struct i2c_client *client)
935 if (twl_class_is_4030())
936 status = twl4030_exit_irq();
938 status = twl6030_exit_irq();
943 for (i = 0; i < TWL_NUM_SLAVES; i++) {
944 struct twl_client *twl = &twl_modules[i];
946 if (twl->client && twl->client != client)
947 i2c_unregister_device(twl->client);
948 twl_modules[i].client = NULL;
954 /* NOTE: this driver only handles a single twl4030/tps659x0 chip */
956 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
960 struct twl4030_platform_data *pdata = client->dev.platform_data;
963 dev_dbg(&client->dev, "no platform data?\n");
967 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
968 dev_dbg(&client->dev, "can't talk I2C?\n");
973 dev_dbg(&client->dev, "driver is already in use\n");
977 for (i = 0; i < TWL_NUM_SLAVES; i++) {
978 struct twl_client *twl = &twl_modules[i];
980 twl->address = client->addr + i;
982 twl->client = client;
984 twl->client = i2c_new_dummy(client->adapter,
987 dev_err(&client->dev,
988 "can't attach client %d\n", i);
993 mutex_init(&twl->xfer_lock);
996 if ((id->driver_data) & TWL6030_CLASS) {
997 twl_id = TWL6030_CLASS_ID;
998 twl_map = &twl6030_map[0];
1000 twl_id = TWL4030_CLASS_ID;
1001 twl_map = &twl4030_map[0];
1004 /* setup clock framework */
1005 clocks_init(&client->dev, pdata->clock);
1007 /* load power event scripts */
1008 if (twl_has_power() && pdata->power)
1009 twl4030_power_init(pdata->power);
1011 /* Maybe init the T2 Interrupt subsystem */
1014 && pdata->irq_end > pdata->irq_base) {
1015 if (twl_class_is_4030()) {
1016 twl4030_init_chip_irq(id->name);
1017 status = twl4030_init_irq(client->irq, pdata->irq_base,
1020 status = twl6030_init_irq(client->irq, pdata->irq_base,
1028 status = add_children(pdata, id->driver_data);
1035 static const struct i2c_device_id twl_ids[] = {
1036 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
1037 { "twl5030", 0 }, /* T2 updated */
1038 { "twl5031", TWL5031 }, /* TWL5030 updated */
1039 { "tps65950", 0 }, /* catalog version of twl5030 */
1040 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
1041 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
1042 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1043 { /* end of list */ },
1045 MODULE_DEVICE_TABLE(i2c, twl_ids);
1047 /* One Client Driver , 4 Clients */
1048 static struct i2c_driver twl_driver = {
1049 .driver.name = DRIVER_NAME,
1050 .id_table = twl_ids,
1052 .remove = twl_remove,
1055 static int __init twl_init(void)
1057 return i2c_add_driver(&twl_driver);
1059 subsys_initcall(twl_init);
1061 static void __exit twl_exit(void)
1063 i2c_del_driver(&twl_driver);
1065 module_exit(twl_exit);
1067 MODULE_AUTHOR("Texas Instruments, Inc.");
1068 MODULE_DESCRIPTION("I2C Core interface for TWL");
1069 MODULE_LICENSE("GPL");