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/module.h>
34 #include <linux/platform_device.h>
35 #include <linux/clk.h>
36 #include <linux/err.h>
37 #include <linux/device.h>
39 #include <linux/of_irq.h>
40 #include <linux/of_platform.h>
41 #include <linux/irq.h>
42 #include <linux/irqdomain.h>
44 #include <linux/regulator/machine.h>
46 #include <linux/i2c.h>
47 #include <linux/i2c/twl.h>
52 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
53 * Management and System Companion Device" chips originally designed for
54 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C,
55 * often at around 3 Mbit/sec, including for interrupt handling.
57 * This driver core provides genirq support for the interrupts emitted,
58 * by the various modules, and exports register access primitives.
60 * FIXME this driver currently requires use of the first interrupt line
61 * (and associated registers).
64 #define DRIVER_NAME "twl"
66 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
67 #define twl_has_keypad() true
69 #define twl_has_keypad() false
72 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
73 #define twl_has_gpio() true
75 #define twl_has_gpio() false
78 #if defined(CONFIG_REGULATOR_TWL4030) \
79 || defined(CONFIG_REGULATOR_TWL4030_MODULE)
80 #define twl_has_regulator() true
82 #define twl_has_regulator() false
85 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
86 #define twl_has_madc() true
88 #define twl_has_madc() false
91 #ifdef CONFIG_TWL4030_POWER
92 #define twl_has_power() true
94 #define twl_has_power() false
97 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
98 #define twl_has_rtc() true
100 #define twl_has_rtc() false
103 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
104 defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
105 #define twl_has_usb() true
107 #define twl_has_usb() false
110 #if defined(CONFIG_TWL4030_WATCHDOG) || \
111 defined(CONFIG_TWL4030_WATCHDOG_MODULE)
112 #define twl_has_watchdog() true
114 #define twl_has_watchdog() false
117 #if defined(CONFIG_MFD_TWL4030_AUDIO) || \
118 defined(CONFIG_MFD_TWL4030_AUDIO_MODULE)
119 #define twl_has_codec() true
121 #define twl_has_codec() false
124 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
125 #define twl_has_bci() true
127 #define twl_has_bci() false
130 /* Triton Core internal information (BEGIN) */
132 /* Last - for index max*/
133 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
135 #define TWL_NUM_SLAVES 4
137 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
138 || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
139 #define twl_has_pwrbutton() true
141 #define twl_has_pwrbutton() false
144 #define SUB_CHIP_ID0 0
145 #define SUB_CHIP_ID1 1
146 #define SUB_CHIP_ID2 2
147 #define SUB_CHIP_ID3 3
148 #define SUB_CHIP_ID_INVAL 0xff
150 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
152 /* Base Address defns for twl4030_map[] */
154 /* subchip/slave 0 - USB ID */
155 #define TWL4030_BASEADD_USB 0x0000
157 /* subchip/slave 1 - AUD ID */
158 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000
159 #define TWL4030_BASEADD_GPIO 0x0098
160 #define TWL4030_BASEADD_INTBR 0x0085
161 #define TWL4030_BASEADD_PIH 0x0080
162 #define TWL4030_BASEADD_TEST 0x004C
164 /* subchip/slave 2 - AUX ID */
165 #define TWL4030_BASEADD_INTERRUPTS 0x00B9
166 #define TWL4030_BASEADD_LED 0x00EE
167 #define TWL4030_BASEADD_MADC 0x0000
168 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074
169 #define TWL4030_BASEADD_PRECHARGE 0x00AA
170 #define TWL4030_BASEADD_PWM0 0x00F8
171 #define TWL4030_BASEADD_PWM1 0x00FB
172 #define TWL4030_BASEADD_PWMA 0x00EF
173 #define TWL4030_BASEADD_PWMB 0x00F1
174 #define TWL4030_BASEADD_KEYPAD 0x00D2
176 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
177 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
180 /* subchip/slave 3 - POWER ID */
181 #define TWL4030_BASEADD_BACKUP 0x0014
182 #define TWL4030_BASEADD_INT 0x002E
183 #define TWL4030_BASEADD_PM_MASTER 0x0036
184 #define TWL4030_BASEADD_PM_RECEIVER 0x005B
185 #define TWL4030_BASEADD_RTC 0x001C
186 #define TWL4030_BASEADD_SECURED_REG 0x0000
188 /* Triton Core internal information (END) */
191 /* subchip/slave 0 0x48 - POWER */
192 #define TWL6030_BASEADD_RTC 0x0000
193 #define TWL6030_BASEADD_MEM 0x0017
194 #define TWL6030_BASEADD_PM_MASTER 0x001F
195 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
196 #define TWL6030_BASEADD_PM_MISC 0x00E2
197 #define TWL6030_BASEADD_PM_PUPD 0x00F0
199 /* subchip/slave 1 0x49 - FEATURE */
200 #define TWL6030_BASEADD_USB 0x0000
201 #define TWL6030_BASEADD_GPADC_CTRL 0x002E
202 #define TWL6030_BASEADD_AUX 0x0090
203 #define TWL6030_BASEADD_PWM 0x00BA
204 #define TWL6030_BASEADD_GASGAUGE 0x00C0
205 #define TWL6030_BASEADD_PIH 0x00D0
206 #define TWL6030_BASEADD_CHARGER 0x00E0
207 #define TWL6025_BASEADD_CHARGER 0x00DA
209 /* subchip/slave 2 0x4A - DFT */
210 #define TWL6030_BASEADD_DIEID 0x00C0
212 /* subchip/slave 3 0x4B - AUDIO */
213 #define TWL6030_BASEADD_AUDIO 0x0000
214 #define TWL6030_BASEADD_RSV 0x0000
215 #define TWL6030_BASEADD_ZERO 0x0000
217 /* Few power values */
218 #define R_CFG_BOOT 0x05
220 /* some fields in R_CFG_BOOT */
221 #define HFCLK_FREQ_19p2_MHZ (1 << 0)
222 #define HFCLK_FREQ_26_MHZ (2 << 0)
223 #define HFCLK_FREQ_38p4_MHZ (3 << 0)
224 #define HIGH_PERF_SQ (1 << 3)
225 #define CK32K_LOWPWR_EN (1 << 7)
227 /*----------------------------------------------------------------------*/
229 /* is driver active, bound to a chip? */
232 /* TWL IDCODE Register value */
233 static u32 twl_idcode;
235 static unsigned int twl_id;
236 unsigned int twl_rev(void)
240 EXPORT_SYMBOL(twl_rev);
242 /* Structure for each TWL4030/TWL6030 Slave */
244 struct i2c_client *client;
247 /* max numb of i2c_msg required is for read =2 */
248 struct i2c_msg xfer_msg[2];
250 /* To lock access to xfer_msg */
251 struct mutex xfer_lock;
254 static struct twl_client twl_modules[TWL_NUM_SLAVES];
256 /* mapping the module id to slave id and base address */
258 unsigned char sid; /* Slave ID */
259 unsigned char base; /* base address */
261 static struct twl_mapping *twl_map;
263 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
265 * NOTE: don't change this table without updating the
266 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
267 * so they continue to match the order in this table.
270 { 0, TWL4030_BASEADD_USB },
272 { 1, TWL4030_BASEADD_AUDIO_VOICE },
273 { 1, TWL4030_BASEADD_GPIO },
274 { 1, TWL4030_BASEADD_INTBR },
275 { 1, TWL4030_BASEADD_PIH },
276 { 1, TWL4030_BASEADD_TEST },
278 { 2, TWL4030_BASEADD_KEYPAD },
279 { 2, TWL4030_BASEADD_MADC },
280 { 2, TWL4030_BASEADD_INTERRUPTS },
281 { 2, TWL4030_BASEADD_LED },
282 { 2, TWL4030_BASEADD_MAIN_CHARGE },
283 { 2, TWL4030_BASEADD_PRECHARGE },
284 { 2, TWL4030_BASEADD_PWM0 },
285 { 2, TWL4030_BASEADD_PWM1 },
286 { 2, TWL4030_BASEADD_PWMA },
287 { 2, TWL4030_BASEADD_PWMB },
288 { 2, TWL5031_BASEADD_ACCESSORY },
289 { 2, TWL5031_BASEADD_INTERRUPTS },
291 { 3, TWL4030_BASEADD_BACKUP },
292 { 3, TWL4030_BASEADD_INT },
293 { 3, TWL4030_BASEADD_PM_MASTER },
294 { 3, TWL4030_BASEADD_PM_RECEIVER },
295 { 3, TWL4030_BASEADD_RTC },
296 { 3, TWL4030_BASEADD_SECURED_REG },
299 static struct twl_mapping twl6030_map[] = {
301 * NOTE: don't change this table without updating the
302 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
303 * so they continue to match the order in this table.
305 { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
306 { SUB_CHIP_ID_INVAL, TWL6030_BASEADD_AUDIO },
307 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
308 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
309 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
311 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
312 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
313 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
314 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
315 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
317 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
318 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
319 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
320 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
321 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
323 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
324 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
325 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
326 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
327 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
328 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
329 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
331 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
332 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
333 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
336 /*----------------------------------------------------------------------*/
338 /* Exported Functions */
341 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
342 * @mod_no: module number
343 * @value: an array of num_bytes+1 containing data to write
344 * @reg: register address (just offset will do)
345 * @num_bytes: number of bytes to transfer
347 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
348 * valid data starts at Offset 1.
350 * Returns the result of operation - 0 is success
352 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
356 struct twl_client *twl;
359 if (unlikely(mod_no > TWL_MODULE_LAST)) {
360 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
363 if (unlikely(!inuse)) {
364 pr_err("%s: not initialized\n", DRIVER_NAME);
367 sid = twl_map[mod_no].sid;
368 if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
369 pr_err("%s: module %d is not part of the pmic\n",
370 DRIVER_NAME, mod_no);
373 twl = &twl_modules[sid];
375 mutex_lock(&twl->xfer_lock);
377 * [MSG1]: fill the register address data
378 * fill the data Tx buffer
380 msg = &twl->xfer_msg[0];
381 msg->addr = twl->address;
382 msg->len = num_bytes + 1;
385 /* over write the first byte of buffer with the register address */
386 *value = twl_map[mod_no].base + reg;
387 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
388 mutex_unlock(&twl->xfer_lock);
390 /* i2c_transfer returns number of messages transferred */
392 pr_err("%s: i2c_write failed to transfer all messages\n",
402 EXPORT_SYMBOL(twl_i2c_write);
405 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
406 * @mod_no: module number
407 * @value: an array of num_bytes containing data to be read
408 * @reg: register address (just offset will do)
409 * @num_bytes: number of bytes to transfer
411 * Returns result of operation - num_bytes is success else failure.
413 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
418 struct twl_client *twl;
421 if (unlikely(mod_no > TWL_MODULE_LAST)) {
422 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
425 if (unlikely(!inuse)) {
426 pr_err("%s: not initialized\n", DRIVER_NAME);
429 sid = twl_map[mod_no].sid;
430 if (unlikely(sid == SUB_CHIP_ID_INVAL)) {
431 pr_err("%s: module %d is not part of the pmic\n",
432 DRIVER_NAME, mod_no);
435 twl = &twl_modules[sid];
437 mutex_lock(&twl->xfer_lock);
438 /* [MSG1] fill the register address data */
439 msg = &twl->xfer_msg[0];
440 msg->addr = twl->address;
442 msg->flags = 0; /* Read the register value */
443 val = twl_map[mod_no].base + reg;
445 /* [MSG2] fill the data rx buffer */
446 msg = &twl->xfer_msg[1];
447 msg->addr = twl->address;
448 msg->flags = I2C_M_RD; /* Read the register value */
449 msg->len = num_bytes; /* only n bytes */
451 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
452 mutex_unlock(&twl->xfer_lock);
454 /* i2c_transfer returns number of messages transferred */
456 pr_err("%s: i2c_read failed to transfer all messages\n",
466 EXPORT_SYMBOL(twl_i2c_read);
469 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
470 * @mod_no: module number
471 * @value: the value to be written 8 bit
472 * @reg: register address (just offset will do)
474 * Returns result of operation - 0 is success
476 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
479 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
480 u8 temp_buffer[2] = { 0 };
481 /* offset 1 contains the data */
482 temp_buffer[1] = value;
483 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
485 EXPORT_SYMBOL(twl_i2c_write_u8);
488 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
489 * @mod_no: module number
490 * @value: the value read 8 bit
491 * @reg: register address (just offset will do)
493 * Returns result of operation - 0 is success
495 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
497 return twl_i2c_read(mod_no, value, reg, 1);
499 EXPORT_SYMBOL(twl_i2c_read_u8);
501 /*----------------------------------------------------------------------*/
504 * twl_read_idcode_register - API to read the IDCODE register.
506 * Unlocks the IDCODE register and read the 32 bit value.
508 static int twl_read_idcode_register(void)
512 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
513 REG_UNLOCK_TEST_REG);
515 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
519 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
522 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
526 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
528 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
534 * twl_get_type - API to get TWL Si type.
536 * Api to get the TWL Si type from IDCODE value.
538 int twl_get_type(void)
540 return TWL_SIL_TYPE(twl_idcode);
542 EXPORT_SYMBOL_GPL(twl_get_type);
545 * twl_get_version - API to get TWL Si version.
547 * Api to get the TWL Si version from IDCODE value.
549 int twl_get_version(void)
551 return TWL_SIL_REV(twl_idcode);
553 EXPORT_SYMBOL_GPL(twl_get_version);
555 static struct device *
556 add_numbered_child(unsigned chip, const char *name, int num,
557 void *pdata, unsigned pdata_len,
558 bool can_wakeup, int irq0, int irq1)
560 struct platform_device *pdev;
561 struct twl_client *twl = &twl_modules[chip];
564 pdev = platform_device_alloc(name, num);
566 dev_dbg(&twl->client->dev, "can't alloc dev\n");
571 pdev->dev.parent = &twl->client->dev;
574 status = platform_device_add_data(pdev, pdata, pdata_len);
576 dev_dbg(&pdev->dev, "can't add platform_data\n");
582 struct resource r[2] = {
583 { .start = irq0, .flags = IORESOURCE_IRQ, },
584 { .start = irq1, .flags = IORESOURCE_IRQ, },
587 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
589 dev_dbg(&pdev->dev, "can't add irqs\n");
594 status = platform_device_add(pdev);
596 device_init_wakeup(&pdev->dev, can_wakeup);
600 platform_device_put(pdev);
601 dev_err(&twl->client->dev, "can't add %s dev\n", name);
602 return ERR_PTR(status);
607 static inline struct device *add_child(unsigned chip, const char *name,
608 void *pdata, unsigned pdata_len,
609 bool can_wakeup, int irq0, int irq1)
611 return add_numbered_child(chip, name, -1, pdata, pdata_len,
612 can_wakeup, irq0, irq1);
615 static struct device *
616 add_regulator_linked(int num, struct regulator_init_data *pdata,
617 struct regulator_consumer_supply *consumers,
618 unsigned num_consumers, unsigned long features)
620 unsigned sub_chip_id;
621 struct twl_regulator_driver_data drv_data;
623 /* regulator framework demands init_data ... */
628 pdata->consumer_supplies = consumers;
629 pdata->num_consumer_supplies = num_consumers;
632 if (pdata->driver_data) {
633 /* If we have existing drv_data, just add the flags */
634 struct twl_regulator_driver_data *tmp;
635 tmp = pdata->driver_data;
636 tmp->features |= features;
638 /* add new driver data struct, used only during init */
639 drv_data.features = features;
640 drv_data.set_voltage = NULL;
641 drv_data.get_voltage = NULL;
642 drv_data.data = NULL;
643 pdata->driver_data = &drv_data;
646 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
647 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
648 return add_numbered_child(sub_chip_id, "twl_reg", num,
649 pdata, sizeof(*pdata), false, 0, 0);
652 static struct device *
653 add_regulator(int num, struct regulator_init_data *pdata,
654 unsigned long features)
656 return add_regulator_linked(num, pdata, NULL, 0, features);
660 * NOTE: We know the first 8 IRQs after pdata->base_irq are
661 * for the PIH, and the next are for the PWR_INT SIH, since
662 * that's how twl_init_irq() sets things up.
666 add_children(struct twl4030_platform_data *pdata, unsigned irq_base,
667 unsigned long features)
669 struct device *child;
670 unsigned sub_chip_id;
672 if (twl_has_gpio() && pdata->gpio) {
673 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
674 pdata->gpio, sizeof(*pdata->gpio),
675 false, irq_base + GPIO_INTR_OFFSET, 0);
677 return PTR_ERR(child);
680 if (twl_has_keypad() && pdata->keypad) {
681 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
682 pdata->keypad, sizeof(*pdata->keypad),
683 true, irq_base + KEYPAD_INTR_OFFSET, 0);
685 return PTR_ERR(child);
688 if (twl_has_madc() && pdata->madc) {
689 child = add_child(2, "twl4030_madc",
690 pdata->madc, sizeof(*pdata->madc),
691 true, irq_base + MADC_INTR_OFFSET, 0);
693 return PTR_ERR(child);
698 * REVISIT platform_data here currently might expose the
699 * "msecure" line ... but for now we just expect board
700 * setup to tell the chip "it's always ok to SET_TIME".
701 * Eventually, Linux might become more aware of such
702 * HW security concerns, and "least privilege".
704 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
705 child = add_child(sub_chip_id, "twl_rtc",
707 true, irq_base + RTC_INTR_OFFSET, 0);
709 return PTR_ERR(child);
712 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
714 static struct regulator_consumer_supply usb1v5 = {
717 static struct regulator_consumer_supply usb1v8 = {
720 static struct regulator_consumer_supply usb3v1 = {
724 /* First add the regulators so that they can be used by transceiver */
725 if (twl_has_regulator()) {
726 /* this is a template that gets copied */
727 struct regulator_init_data usb_fixed = {
728 .constraints.valid_modes_mask =
729 REGULATOR_MODE_NORMAL
730 | REGULATOR_MODE_STANDBY,
731 .constraints.valid_ops_mask =
732 REGULATOR_CHANGE_MODE
733 | REGULATOR_CHANGE_STATUS,
736 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
737 &usb_fixed, &usb1v5, 1,
740 return PTR_ERR(child);
742 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
743 &usb_fixed, &usb1v8, 1,
746 return PTR_ERR(child);
748 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
749 &usb_fixed, &usb3v1, 1,
752 return PTR_ERR(child);
756 child = add_child(0, "twl4030_usb",
757 pdata->usb, sizeof(*pdata->usb),
759 /* irq0 = USB_PRES, irq1 = USB */
760 irq_base + USB_PRES_INTR_OFFSET,
761 irq_base + USB_INTR_OFFSET);
764 return PTR_ERR(child);
766 /* we need to connect regulators to this transceiver */
767 if (twl_has_regulator() && child) {
768 usb1v5.dev_name = dev_name(child);
769 usb1v8.dev_name = dev_name(child);
770 usb3v1.dev_name = dev_name(child);
773 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
775 static struct regulator_consumer_supply usb3v3;
778 if (twl_has_regulator()) {
779 /* this is a template that gets copied */
780 struct regulator_init_data usb_fixed = {
781 .constraints.valid_modes_mask =
782 REGULATOR_MODE_NORMAL
783 | REGULATOR_MODE_STANDBY,
784 .constraints.valid_ops_mask =
785 REGULATOR_CHANGE_MODE
786 | REGULATOR_CHANGE_STATUS,
789 if (features & TWL6025_SUBCLASS) {
790 usb3v3.supply = "ldousb";
791 regulator = TWL6025_REG_LDOUSB;
793 usb3v3.supply = "vusb";
794 regulator = TWL6030_REG_VUSB;
796 child = add_regulator_linked(regulator, &usb_fixed,
800 return PTR_ERR(child);
803 pdata->usb->features = features;
805 child = add_child(0, "twl6030_usb",
806 pdata->usb, sizeof(*pdata->usb),
808 /* irq1 = VBUS_PRES, irq0 = USB ID */
809 irq_base + USBOTG_INTR_OFFSET,
810 irq_base + USB_PRES_INTR_OFFSET);
813 return PTR_ERR(child);
814 /* we need to connect regulators to this transceiver */
815 if (twl_has_regulator() && child)
816 usb3v3.dev_name = dev_name(child);
817 } else if (twl_has_regulator() && twl_class_is_6030()) {
818 if (features & TWL6025_SUBCLASS)
819 child = add_regulator(TWL6025_REG_LDOUSB,
820 pdata->ldousb, features);
822 child = add_regulator(TWL6030_REG_VUSB,
823 pdata->vusb, features);
826 return PTR_ERR(child);
829 if (twl_has_watchdog() && twl_class_is_4030()) {
830 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
832 return PTR_ERR(child);
835 if (twl_has_pwrbutton() && twl_class_is_4030()) {
836 child = add_child(1, "twl4030_pwrbutton",
837 NULL, 0, true, irq_base + 8 + 0, 0);
839 return PTR_ERR(child);
842 if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
843 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
844 child = add_child(sub_chip_id, "twl4030-audio",
845 pdata->audio, sizeof(*pdata->audio),
848 return PTR_ERR(child);
851 /* twl4030 regulators */
852 if (twl_has_regulator() && twl_class_is_4030()) {
853 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
856 return PTR_ERR(child);
858 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
861 return PTR_ERR(child);
863 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
866 return PTR_ERR(child);
868 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
871 return PTR_ERR(child);
873 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
876 return PTR_ERR(child);
878 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
881 return PTR_ERR(child);
883 child = add_regulator((features & TWL4030_VAUX2)
884 ? TWL4030_REG_VAUX2_4030
886 pdata->vaux2, features);
888 return PTR_ERR(child);
890 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
893 return PTR_ERR(child);
895 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
898 return PTR_ERR(child);
900 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
903 return PTR_ERR(child);
906 /* maybe add LDOs that are omitted on cost-reduced parts */
907 if (twl_has_regulator() && !(features & TPS_SUBSET)
908 && twl_class_is_4030()) {
909 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
912 return PTR_ERR(child);
914 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
917 return PTR_ERR(child);
919 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
922 return PTR_ERR(child);
924 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
927 return PTR_ERR(child);
929 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
932 return PTR_ERR(child);
934 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
937 return PTR_ERR(child);
940 /* twl6030 regulators */
941 if (twl_has_regulator() && twl_class_is_6030() &&
942 !(features & TWL6025_SUBCLASS)) {
943 child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
946 return PTR_ERR(child);
948 child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
951 return PTR_ERR(child);
953 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
956 return PTR_ERR(child);
958 child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8,
961 return PTR_ERR(child);
963 child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1,
966 return PTR_ERR(child);
968 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
971 return PTR_ERR(child);
973 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
976 return PTR_ERR(child);
978 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
981 return PTR_ERR(child);
983 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
986 return PTR_ERR(child);
988 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
991 return PTR_ERR(child);
993 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
996 return PTR_ERR(child);
998 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
1001 return PTR_ERR(child);
1003 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
1006 return PTR_ERR(child);
1008 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
1011 return PTR_ERR(child);
1014 /* 6030 and 6025 share this regulator */
1015 if (twl_has_regulator() && twl_class_is_6030()) {
1016 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
1019 return PTR_ERR(child);
1022 /* twl6025 regulators */
1023 if (twl_has_regulator() && twl_class_is_6030() &&
1024 (features & TWL6025_SUBCLASS)) {
1025 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
1028 return PTR_ERR(child);
1030 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1033 return PTR_ERR(child);
1035 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1038 return PTR_ERR(child);
1040 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1043 return PTR_ERR(child);
1045 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1048 return PTR_ERR(child);
1050 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1053 return PTR_ERR(child);
1055 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1058 return PTR_ERR(child);
1060 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1063 return PTR_ERR(child);
1065 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1068 return PTR_ERR(child);
1070 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1073 return PTR_ERR(child);
1075 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1078 return PTR_ERR(child);
1082 if (twl_has_bci() && pdata->bci &&
1083 !(features & (TPS_SUBSET | TWL5031))) {
1084 child = add_child(3, "twl4030_bci",
1085 pdata->bci, sizeof(*pdata->bci), false,
1086 /* irq0 = CHG_PRES, irq1 = BCI */
1087 irq_base + BCI_PRES_INTR_OFFSET,
1088 irq_base + BCI_INTR_OFFSET);
1090 return PTR_ERR(child);
1096 /*----------------------------------------------------------------------*/
1099 * These three functions initialize the on-chip clock framework,
1100 * letting it generate the right frequencies for USB, MADC, and
1103 static inline int __init protect_pm_master(void)
1107 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1108 TWL4030_PM_MASTER_PROTECT_KEY);
1112 static inline int __init unprotect_pm_master(void)
1116 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1117 TWL4030_PM_MASTER_KEY_CFG1,
1118 TWL4030_PM_MASTER_PROTECT_KEY);
1119 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1120 TWL4030_PM_MASTER_KEY_CFG2,
1121 TWL4030_PM_MASTER_PROTECT_KEY);
1126 static void clocks_init(struct device *dev,
1127 struct twl4030_clock_init_data *clock)
1132 u8 ctrl = HFCLK_FREQ_26_MHZ;
1134 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1135 if (cpu_is_omap2430())
1136 osc = clk_get(dev, "osc_ck");
1138 osc = clk_get(dev, "osc_sys_ck");
1141 printk(KERN_WARNING "Skipping twl internal clock init and "
1142 "using bootloader value (unknown osc rate)\n");
1146 rate = clk_get_rate(osc);
1150 /* REVISIT for non-OMAP systems, pass the clock rate from
1151 * board init code, using platform_data.
1153 osc = ERR_PTR(-EIO);
1155 printk(KERN_WARNING "Skipping twl internal clock init and "
1156 "using bootloader value (unknown osc rate)\n");
1163 ctrl = HFCLK_FREQ_19p2_MHZ;
1166 ctrl = HFCLK_FREQ_26_MHZ;
1169 ctrl = HFCLK_FREQ_38p4_MHZ;
1173 ctrl |= HIGH_PERF_SQ;
1174 if (clock && clock->ck32k_lowpwr_enable)
1175 ctrl |= CK32K_LOWPWR_EN;
1177 e |= unprotect_pm_master();
1178 /* effect->MADC+USB ck en */
1179 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1180 e |= protect_pm_master();
1183 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1186 /*----------------------------------------------------------------------*/
1189 static int twl_remove(struct i2c_client *client)
1191 unsigned i, num_slaves;
1194 if (twl_class_is_4030()) {
1195 status = twl4030_exit_irq();
1196 num_slaves = TWL_NUM_SLAVES;
1198 status = twl6030_exit_irq();
1199 num_slaves = TWL_NUM_SLAVES - 1;
1205 for (i = 0; i < num_slaves; i++) {
1206 struct twl_client *twl = &twl_modules[i];
1208 if (twl->client && twl->client != client)
1209 i2c_unregister_device(twl->client);
1210 twl_modules[i].client = NULL;
1216 /* NOTE: This driver only handles a single twl4030/tps659x0 chip */
1217 static int __devinit
1218 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1220 struct twl4030_platform_data *pdata = client->dev.platform_data;
1221 struct device_node *node = client->dev.of_node;
1224 unsigned i, num_slaves;
1226 if (node && !pdata) {
1228 * XXX: Temporary pdata until the information is correctly
1229 * retrieved by every TWL modules from DT.
1231 pdata = devm_kzalloc(&client->dev,
1232 sizeof(struct twl4030_platform_data),
1239 dev_dbg(&client->dev, "no platform data?\n");
1243 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1244 dev_dbg(&client->dev, "can't talk I2C?\n");
1249 dev_dbg(&client->dev, "driver is already in use\n");
1253 if ((id->driver_data) & TWL6030_CLASS) {
1254 twl_id = TWL6030_CLASS_ID;
1255 twl_map = &twl6030_map[0];
1256 num_slaves = TWL_NUM_SLAVES - 1;
1258 twl_id = TWL4030_CLASS_ID;
1259 twl_map = &twl4030_map[0];
1260 num_slaves = TWL_NUM_SLAVES;
1263 for (i = 0; i < num_slaves; i++) {
1264 struct twl_client *twl = &twl_modules[i];
1266 twl->address = client->addr + i;
1268 twl->client = client;
1270 twl->client = i2c_new_dummy(client->adapter,
1273 dev_err(&client->dev,
1274 "can't attach client %d\n", i);
1279 mutex_init(&twl->xfer_lock);
1284 /* setup clock framework */
1285 clocks_init(&client->dev, pdata->clock);
1287 /* read TWL IDCODE Register */
1288 if (twl_id == TWL4030_CLASS_ID) {
1289 status = twl_read_idcode_register();
1290 WARN(status < 0, "Error: reading twl_idcode register value\n");
1293 /* load power event scripts */
1294 if (twl_has_power() && pdata->power)
1295 twl4030_power_init(pdata->power);
1297 /* Maybe init the T2 Interrupt subsystem */
1299 if (twl_class_is_4030()) {
1300 twl4030_init_chip_irq(id->name);
1301 irq_base = twl4030_init_irq(&client->dev, client->irq);
1303 irq_base = twl6030_init_irq(&client->dev, client->irq);
1313 * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1314 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1315 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1317 if (twl_class_is_4030()) {
1320 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1321 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1322 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1323 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1328 status = of_platform_populate(node, NULL, NULL, &client->dev);
1330 status = add_children(pdata, irq_base, id->driver_data);
1339 static const struct i2c_device_id twl_ids[] = {
1340 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
1341 { "twl5030", 0 }, /* T2 updated */
1342 { "twl5031", TWL5031 }, /* TWL5030 updated */
1343 { "tps65950", 0 }, /* catalog version of twl5030 */
1344 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
1345 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
1346 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED
1347 and vibrator. Charger in USB module*/
1348 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1349 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1350 { /* end of list */ },
1352 MODULE_DEVICE_TABLE(i2c, twl_ids);
1354 /* One Client Driver , 4 Clients */
1355 static struct i2c_driver twl_driver = {
1356 .driver.name = DRIVER_NAME,
1357 .id_table = twl_ids,
1359 .remove = twl_remove,
1362 static int __init twl_init(void)
1364 return i2c_add_driver(&twl_driver);
1366 subsys_initcall(twl_init);
1368 static void __exit twl_exit(void)
1370 i2c_del_driver(&twl_driver);
1372 module_exit(twl_exit);
1374 MODULE_AUTHOR("Texas Instruments, Inc.");
1375 MODULE_DESCRIPTION("I2C Core interface for TWL");
1376 MODULE_LICENSE("GPL");