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>
38 #include <linux/regulator/machine.h>
40 #include <linux/i2c.h>
41 #include <linux/i2c/twl.h>
43 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
48 * The TWL4030 "Triton 2" is one of a family of a multi-function "Power
49 * Management and System Companion Device" chips originally designed for
50 * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C,
51 * often at around 3 Mbit/sec, including for interrupt handling.
53 * This driver core provides genirq support for the interrupts emitted,
54 * by the various modules, and exports register access primitives.
56 * FIXME this driver currently requires use of the first interrupt line
57 * (and associated registers).
60 #define DRIVER_NAME "twl"
62 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
63 #define twl_has_keypad() true
65 #define twl_has_keypad() false
68 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
69 #define twl_has_gpio() true
71 #define twl_has_gpio() false
74 #if defined(CONFIG_REGULATOR_TWL4030) \
75 || defined(CONFIG_REGULATOR_TWL4030_MODULE)
76 #define twl_has_regulator() true
78 #define twl_has_regulator() false
81 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
82 #define twl_has_madc() true
84 #define twl_has_madc() false
87 #ifdef CONFIG_TWL4030_POWER
88 #define twl_has_power() true
90 #define twl_has_power() false
93 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
94 #define twl_has_rtc() true
96 #define twl_has_rtc() false
99 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\
100 defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE)
101 #define twl_has_usb() true
103 #define twl_has_usb() false
106 #if defined(CONFIG_TWL4030_WATCHDOG) || \
107 defined(CONFIG_TWL4030_WATCHDOG_MODULE)
108 #define twl_has_watchdog() true
110 #define twl_has_watchdog() false
113 #if defined(CONFIG_MFD_TWL4030_AUDIO) || defined(CONFIG_MFD_TWL4030_AUDIO_MODULE) ||\
114 defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE)
115 #define twl_has_codec() true
117 #define twl_has_codec() false
120 #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
121 #define twl_has_bci() true
123 #define twl_has_bci() false
126 /* Triton Core internal information (BEGIN) */
128 /* Last - for index max*/
129 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
131 #define TWL_NUM_SLAVES 4
133 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
134 || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
135 #define twl_has_pwrbutton() true
137 #define twl_has_pwrbutton() false
140 #define SUB_CHIP_ID0 0
141 #define SUB_CHIP_ID1 1
142 #define SUB_CHIP_ID2 2
143 #define SUB_CHIP_ID3 3
145 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
147 /* Base Address defns for twl4030_map[] */
149 /* subchip/slave 0 - USB ID */
150 #define TWL4030_BASEADD_USB 0x0000
152 /* subchip/slave 1 - AUD ID */
153 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000
154 #define TWL4030_BASEADD_GPIO 0x0098
155 #define TWL4030_BASEADD_INTBR 0x0085
156 #define TWL4030_BASEADD_PIH 0x0080
157 #define TWL4030_BASEADD_TEST 0x004C
159 /* subchip/slave 2 - AUX ID */
160 #define TWL4030_BASEADD_INTERRUPTS 0x00B9
161 #define TWL4030_BASEADD_LED 0x00EE
162 #define TWL4030_BASEADD_MADC 0x0000
163 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074
164 #define TWL4030_BASEADD_PRECHARGE 0x00AA
165 #define TWL4030_BASEADD_PWM0 0x00F8
166 #define TWL4030_BASEADD_PWM1 0x00FB
167 #define TWL4030_BASEADD_PWMA 0x00EF
168 #define TWL4030_BASEADD_PWMB 0x00F1
169 #define TWL4030_BASEADD_KEYPAD 0x00D2
171 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
172 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
175 /* subchip/slave 3 - POWER ID */
176 #define TWL4030_BASEADD_BACKUP 0x0014
177 #define TWL4030_BASEADD_INT 0x002E
178 #define TWL4030_BASEADD_PM_MASTER 0x0036
179 #define TWL4030_BASEADD_PM_RECEIVER 0x005B
180 #define TWL4030_BASEADD_RTC 0x001C
181 #define TWL4030_BASEADD_SECURED_REG 0x0000
183 /* Triton Core internal information (END) */
186 /* subchip/slave 0 0x48 - POWER */
187 #define TWL6030_BASEADD_RTC 0x0000
188 #define TWL6030_BASEADD_MEM 0x0017
189 #define TWL6030_BASEADD_PM_MASTER 0x001F
190 #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
191 #define TWL6030_BASEADD_PM_MISC 0x00E2
192 #define TWL6030_BASEADD_PM_PUPD 0x00F0
194 /* subchip/slave 1 0x49 - FEATURE */
195 #define TWL6030_BASEADD_USB 0x0000
196 #define TWL6030_BASEADD_GPADC_CTRL 0x002E
197 #define TWL6030_BASEADD_AUX 0x0090
198 #define TWL6030_BASEADD_PWM 0x00BA
199 #define TWL6030_BASEADD_GASGAUGE 0x00C0
200 #define TWL6030_BASEADD_PIH 0x00D0
201 #define TWL6030_BASEADD_CHARGER 0x00E0
202 #define TWL6025_BASEADD_CHARGER 0x00DA
204 /* subchip/slave 2 0x4A - DFT */
205 #define TWL6030_BASEADD_DIEID 0x00C0
207 /* subchip/slave 3 0x4B - AUDIO */
208 #define TWL6030_BASEADD_AUDIO 0x0000
209 #define TWL6030_BASEADD_RSV 0x0000
210 #define TWL6030_BASEADD_ZERO 0x0000
212 /* Few power values */
213 #define R_CFG_BOOT 0x05
215 /* some fields in R_CFG_BOOT */
216 #define HFCLK_FREQ_19p2_MHZ (1 << 0)
217 #define HFCLK_FREQ_26_MHZ (2 << 0)
218 #define HFCLK_FREQ_38p4_MHZ (3 << 0)
219 #define HIGH_PERF_SQ (1 << 3)
220 #define CK32K_LOWPWR_EN (1 << 7)
223 /* chip-specific feature flags, for i2c_device_id.driver_data */
224 #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
225 #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
226 #define TWL5031 BIT(2) /* twl5031 has different registers */
227 #define TWL6030_CLASS BIT(3) /* TWL6030 class */
229 /*----------------------------------------------------------------------*/
231 /* is driver active, bound to a chip? */
234 /* TWL IDCODE Register value */
235 static u32 twl_idcode;
237 static unsigned int twl_id;
238 unsigned int twl_rev(void)
242 EXPORT_SYMBOL(twl_rev);
244 /* Structure for each TWL4030/TWL6030 Slave */
246 struct i2c_client *client;
249 /* max numb of i2c_msg required is for read =2 */
250 struct i2c_msg xfer_msg[2];
252 /* To lock access to xfer_msg */
253 struct mutex xfer_lock;
256 static struct twl_client twl_modules[TWL_NUM_SLAVES];
259 /* mapping the module id to slave id and base address */
261 unsigned char sid; /* Slave ID */
262 unsigned char base; /* base address */
264 static struct twl_mapping *twl_map;
266 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
268 * NOTE: don't change this table without updating the
269 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
270 * so they continue to match the order in this table.
273 { 0, TWL4030_BASEADD_USB },
275 { 1, TWL4030_BASEADD_AUDIO_VOICE },
276 { 1, TWL4030_BASEADD_GPIO },
277 { 1, TWL4030_BASEADD_INTBR },
278 { 1, TWL4030_BASEADD_PIH },
279 { 1, TWL4030_BASEADD_TEST },
281 { 2, TWL4030_BASEADD_KEYPAD },
282 { 2, TWL4030_BASEADD_MADC },
283 { 2, TWL4030_BASEADD_INTERRUPTS },
284 { 2, TWL4030_BASEADD_LED },
285 { 2, TWL4030_BASEADD_MAIN_CHARGE },
286 { 2, TWL4030_BASEADD_PRECHARGE },
287 { 2, TWL4030_BASEADD_PWM0 },
288 { 2, TWL4030_BASEADD_PWM1 },
289 { 2, TWL4030_BASEADD_PWMA },
290 { 2, TWL4030_BASEADD_PWMB },
291 { 2, TWL5031_BASEADD_ACCESSORY },
292 { 2, TWL5031_BASEADD_INTERRUPTS },
294 { 3, TWL4030_BASEADD_BACKUP },
295 { 3, TWL4030_BASEADD_INT },
296 { 3, TWL4030_BASEADD_PM_MASTER },
297 { 3, TWL4030_BASEADD_PM_RECEIVER },
298 { 3, TWL4030_BASEADD_RTC },
299 { 3, TWL4030_BASEADD_SECURED_REG },
302 static struct twl_mapping twl6030_map[] = {
304 * NOTE: don't change this table without updating the
305 * <linux/i2c/twl.h> defines for TWL4030_MODULE_*
306 * so they continue to match the order in this table.
308 { SUB_CHIP_ID1, TWL6030_BASEADD_USB },
309 { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
310 { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
311 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
312 { SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
314 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
315 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
316 { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
317 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
318 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
320 { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
321 { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
322 { SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
323 { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
324 { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
326 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
327 { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
328 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
329 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
330 { SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
331 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
332 { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
334 { SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
335 { SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
336 { SUB_CHIP_ID1, TWL6025_BASEADD_CHARGER },
339 /*----------------------------------------------------------------------*/
341 /* Exported Functions */
344 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
345 * @mod_no: module number
346 * @value: an array of num_bytes+1 containing data to write
347 * @reg: register address (just offset will do)
348 * @num_bytes: number of bytes to transfer
350 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
351 * valid data starts at Offset 1.
353 * Returns the result of operation - 0 is success
355 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
359 struct twl_client *twl;
362 if (unlikely(mod_no > TWL_MODULE_LAST)) {
363 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
366 if (unlikely(!inuse)) {
367 pr_err("%s: not initialized\n", DRIVER_NAME);
370 sid = twl_map[mod_no].sid;
371 twl = &twl_modules[sid];
373 mutex_lock(&twl->xfer_lock);
375 * [MSG1]: fill the register address data
376 * fill the data Tx buffer
378 msg = &twl->xfer_msg[0];
379 msg->addr = twl->address;
380 msg->len = num_bytes + 1;
383 /* over write the first byte of buffer with the register address */
384 *value = twl_map[mod_no].base + reg;
385 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
386 mutex_unlock(&twl->xfer_lock);
388 /* i2c_transfer returns number of messages transferred */
390 pr_err("%s: i2c_write failed to transfer all messages\n",
400 EXPORT_SYMBOL(twl_i2c_write);
403 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
404 * @mod_no: module number
405 * @value: an array of num_bytes containing data to be read
406 * @reg: register address (just offset will do)
407 * @num_bytes: number of bytes to transfer
409 * Returns result of operation - num_bytes is success else failure.
411 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
416 struct twl_client *twl;
419 if (unlikely(mod_no > TWL_MODULE_LAST)) {
420 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
423 if (unlikely(!inuse)) {
424 pr_err("%s: not initialized\n", DRIVER_NAME);
427 sid = twl_map[mod_no].sid;
428 twl = &twl_modules[sid];
430 mutex_lock(&twl->xfer_lock);
431 /* [MSG1] fill the register address data */
432 msg = &twl->xfer_msg[0];
433 msg->addr = twl->address;
435 msg->flags = 0; /* Read the register value */
436 val = twl_map[mod_no].base + reg;
438 /* [MSG2] fill the data rx buffer */
439 msg = &twl->xfer_msg[1];
440 msg->addr = twl->address;
441 msg->flags = I2C_M_RD; /* Read the register value */
442 msg->len = num_bytes; /* only n bytes */
444 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
445 mutex_unlock(&twl->xfer_lock);
447 /* i2c_transfer returns number of messages transferred */
449 pr_err("%s: i2c_read failed to transfer all messages\n",
459 EXPORT_SYMBOL(twl_i2c_read);
462 * twl_i2c_rmw_u8 - Reads a 8 bit register, modifies it and writes back
463 * @mod_no: module number
466 * @reg: register address (just offset will do)
468 * Returns result of operation - 0 is success else failure.
470 int twl_i2c_rmw_u8(u8 mod_no, u8 bits_to_clear, u8 bits_to_set, u8 reg)
472 u8 value_w[2] = { 0 };
477 struct twl_client *twl;
480 if (unlikely(mod_no > TWL_MODULE_LAST)) {
481 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
484 if (unlikely(!inuse)) {
485 pr_err("%s: not initialized\n", DRIVER_NAME);
488 sid = twl_map[mod_no].sid;
489 twl = &twl_modules[sid];
491 mutex_lock(&twl->xfer_lock);
492 /* [MSG1] fill the register address data */
493 msg = &twl->xfer_msg[0];
494 msg->addr = twl->address;
496 msg->flags = 0; /* Read the register value */
497 val = twl_map[mod_no].base + reg;
499 /* [MSG2] fill the data rx buffer */
500 msg = &twl->xfer_msg[1];
501 msg->addr = twl->address;
502 msg->flags = I2C_M_RD; /* Read the register value */
505 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
506 /* i2c_transfer returns number of messages transferred */
508 pr_err("%s: i2c_read failed to transfer all messages\n",
515 value &= ~bits_to_clear;
516 value |= bits_to_set;
518 value_w[0] = twl_map[mod_no].base + reg;
521 msg = &twl->xfer_msg[0];
522 msg->addr = twl->address;
526 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
527 /* i2c_transfer returns number of messages transferred */
529 pr_err("%s: i2c_write failed to transfer all messages\n",
538 mutex_unlock(&twl->xfer_lock);
541 EXPORT_SYMBOL(twl_i2c_rmw_u8);
544 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
545 * @mod_no: module number
546 * @value: the value to be written 8 bit
547 * @reg: register address (just offset will do)
549 * Returns result of operation - 0 is success
551 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
554 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
555 u8 temp_buffer[2] = { 0 };
556 /* offset 1 contains the data */
557 temp_buffer[1] = value;
558 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
560 EXPORT_SYMBOL(twl_i2c_write_u8);
563 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
564 * @mod_no: module number
565 * @value: the value read 8 bit
566 * @reg: register address (just offset will do)
568 * Returns result of operation - 0 is success
570 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
572 return twl_i2c_read(mod_no, value, reg, 1);
574 EXPORT_SYMBOL(twl_i2c_read_u8);
576 /*----------------------------------------------------------------------*/
579 * twl_read_idcode_register - API to read the IDCODE register.
581 * Unlocks the IDCODE register and read the 32 bit value.
583 static int twl_read_idcode_register(void)
587 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK,
588 REG_UNLOCK_TEST_REG);
590 pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err);
594 err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode),
597 pr_err("TWL4030: unable to read IDCODE -%d\n", err);
601 err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG);
603 pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err);
609 * twl_get_type - API to get TWL Si type.
611 * Api to get the TWL Si type from IDCODE value.
613 int twl_get_type(void)
615 return TWL_SIL_TYPE(twl_idcode);
617 EXPORT_SYMBOL_GPL(twl_get_type);
620 * twl_get_version - API to get TWL Si version.
622 * Api to get the TWL Si version from IDCODE value.
624 int twl_get_version(void)
626 return TWL_SIL_REV(twl_idcode);
628 EXPORT_SYMBOL_GPL(twl_get_version);
630 static struct device *
631 add_numbered_child(unsigned chip, const char *name, int num,
632 void *pdata, unsigned pdata_len,
633 bool can_wakeup, int irq0, int irq1)
635 struct platform_device *pdev;
636 struct twl_client *twl = &twl_modules[chip];
639 pdev = platform_device_alloc(name, num);
641 dev_dbg(&twl->client->dev, "can't alloc dev\n");
646 pdev->dev.parent = &twl->client->dev;
649 status = platform_device_add_data(pdev, pdata, pdata_len);
651 dev_dbg(&pdev->dev, "can't add platform_data\n");
657 struct resource r[2] = {
658 { .start = irq0, .flags = IORESOURCE_IRQ, },
659 { .start = irq1, .flags = IORESOURCE_IRQ, },
662 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
664 dev_dbg(&pdev->dev, "can't add irqs\n");
669 status = platform_device_add(pdev);
671 device_init_wakeup(&pdev->dev, can_wakeup);
675 platform_device_put(pdev);
676 dev_err(&twl->client->dev, "can't add %s dev\n", name);
677 return ERR_PTR(status);
682 static inline struct device *add_child(unsigned chip, const char *name,
683 void *pdata, unsigned pdata_len,
684 bool can_wakeup, int irq0, int irq1)
686 return add_numbered_child(chip, name, -1, pdata, pdata_len,
687 can_wakeup, irq0, irq1);
690 static struct device *
691 add_regulator_linked(int num, struct regulator_init_data *pdata,
692 struct regulator_consumer_supply *consumers,
693 unsigned num_consumers, unsigned long features)
695 unsigned sub_chip_id;
696 struct twl_regulator_driver_data drv_data;
698 /* regulator framework demands init_data ... */
703 pdata->consumer_supplies = consumers;
704 pdata->num_consumer_supplies = num_consumers;
707 if (pdata->driver_data) {
708 /* If we have existing drv_data, just add the flags */
709 struct twl_regulator_driver_data *tmp;
710 tmp = pdata->driver_data;
711 tmp->features |= features;
713 /* add new driver data struct, used only during init */
714 drv_data.features = features;
715 drv_data.set_voltage = NULL;
716 drv_data.get_voltage = NULL;
717 drv_data.data = NULL;
718 pdata->driver_data = &drv_data;
721 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
722 sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
723 return add_numbered_child(sub_chip_id, "twl_reg", num,
724 pdata, sizeof(*pdata), false, 0, 0);
727 static struct device *
728 add_regulator(int num, struct regulator_init_data *pdata,
729 unsigned long features)
731 return add_regulator_linked(num, pdata, NULL, 0, features);
735 * NOTE: We know the first 8 IRQs after pdata->base_irq are
736 * for the PIH, and the next are for the PWR_INT SIH, since
737 * that's how twl_init_irq() sets things up.
741 add_children(struct twl4030_platform_data *pdata, unsigned long features)
743 struct device *child;
744 unsigned sub_chip_id;
746 if (twl_has_gpio() && pdata->gpio) {
747 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
748 pdata->gpio, sizeof(*pdata->gpio),
749 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
751 return PTR_ERR(child);
754 if (twl_has_keypad() && pdata->keypad) {
755 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
756 pdata->keypad, sizeof(*pdata->keypad),
757 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
759 return PTR_ERR(child);
762 if (twl_has_madc() && pdata->madc) {
763 child = add_child(2, "twl4030_madc",
764 pdata->madc, sizeof(*pdata->madc),
765 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
767 return PTR_ERR(child);
772 * REVISIT platform_data here currently might expose the
773 * "msecure" line ... but for now we just expect board
774 * setup to tell the chip "it's always ok to SET_TIME".
775 * Eventually, Linux might become more aware of such
776 * HW security concerns, and "least privilege".
778 sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
779 child = add_child(sub_chip_id, "twl_rtc",
781 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
783 return PTR_ERR(child);
786 if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
788 static struct regulator_consumer_supply usb1v5 = {
791 static struct regulator_consumer_supply usb1v8 = {
794 static struct regulator_consumer_supply usb3v1[] = {
795 { .supply = "usb3v1" },
796 { .supply = "bci3v1" },
799 /* First add the regulators so that they can be used by transceiver */
800 if (twl_has_regulator()) {
801 /* this is a template that gets copied */
802 struct regulator_init_data usb_fixed = {
803 .constraints.valid_modes_mask =
804 REGULATOR_MODE_NORMAL
805 | REGULATOR_MODE_STANDBY,
806 .constraints.valid_ops_mask =
807 REGULATOR_CHANGE_MODE
808 | REGULATOR_CHANGE_STATUS,
811 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
812 &usb_fixed, &usb1v5, 1,
815 return PTR_ERR(child);
817 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
818 &usb_fixed, &usb1v8, 1,
821 return PTR_ERR(child);
823 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
824 &usb_fixed, usb3v1, 2,
827 return PTR_ERR(child);
831 child = add_child(0, "twl4030_usb",
832 pdata->usb, sizeof(*pdata->usb),
834 /* irq0 = USB_PRES, irq1 = USB */
835 pdata->irq_base + USB_PRES_INTR_OFFSET,
836 pdata->irq_base + USB_INTR_OFFSET);
839 return PTR_ERR(child);
841 /* we need to connect regulators to this transceiver */
842 if (twl_has_regulator() && child) {
845 usb3v1[0].dev = child;
848 if (twl_has_usb() && pdata->usb && twl_class_is_6030()) {
850 static struct regulator_consumer_supply usb3v3;
853 if (twl_has_regulator()) {
854 /* this is a template that gets copied */
855 struct regulator_init_data usb_fixed = {
856 .constraints.valid_modes_mask =
857 REGULATOR_MODE_NORMAL
858 | REGULATOR_MODE_STANDBY,
859 .constraints.valid_ops_mask =
860 REGULATOR_CHANGE_MODE
861 | REGULATOR_CHANGE_STATUS,
864 if (features & TWL6025_SUBCLASS) {
865 usb3v3.supply = "ldousb";
866 regulator = TWL6025_REG_LDOUSB;
868 usb3v3.supply = "vusb";
869 regulator = TWL6030_REG_VUSB;
871 child = add_regulator_linked(regulator, &usb_fixed,
875 return PTR_ERR(child);
878 pdata->usb->features = features;
880 child = add_child(0, "twl6030_usb",
881 pdata->usb, sizeof(*pdata->usb),
883 /* irq1 = VBUS_PRES, irq0 = USB ID */
884 pdata->irq_base + USBOTG_INTR_OFFSET,
885 pdata->irq_base + USB_PRES_INTR_OFFSET);
888 return PTR_ERR(child);
889 /* we need to connect regulators to this transceiver */
890 if (twl_has_regulator() && child)
892 } else if (twl_has_regulator() && twl_class_is_6030()) {
893 if (features & TWL6025_SUBCLASS)
894 child = add_regulator(TWL6025_REG_LDOUSB,
895 pdata->ldousb, features);
897 child = add_regulator(TWL6030_REG_VUSB,
898 pdata->vusb, features);
901 return PTR_ERR(child);
904 if (twl_has_watchdog() && twl_class_is_4030()) {
905 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
907 return PTR_ERR(child);
910 if (twl_has_pwrbutton() && twl_class_is_4030()) {
911 child = add_child(1, "twl4030_pwrbutton",
912 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
914 return PTR_ERR(child);
917 if (twl_has_codec() && pdata->audio && twl_class_is_4030()) {
918 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
919 child = add_child(sub_chip_id, "twl4030-audio",
920 pdata->audio, sizeof(*pdata->audio),
923 return PTR_ERR(child);
926 if (twl_has_codec() && pdata->audio && twl_class_is_6030()) {
927 sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
928 child = add_child(sub_chip_id, "twl6040",
929 pdata->audio, sizeof(*pdata->audio),
932 return PTR_ERR(child);
935 /* twl4030 regulators */
936 if (twl_has_regulator() && twl_class_is_4030()) {
937 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1,
940 return PTR_ERR(child);
942 child = add_regulator(TWL4030_REG_VIO, pdata->vio,
945 return PTR_ERR(child);
947 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1,
950 return PTR_ERR(child);
952 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2,
955 return PTR_ERR(child);
957 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1,
960 return PTR_ERR(child);
962 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac,
965 return PTR_ERR(child);
967 child = add_regulator((features & TWL4030_VAUX2)
968 ? TWL4030_REG_VAUX2_4030
970 pdata->vaux2, features);
972 return PTR_ERR(child);
974 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1,
977 return PTR_ERR(child);
979 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2,
982 return PTR_ERR(child);
984 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig,
987 return PTR_ERR(child);
989 child = add_regulator(TWL4030_REG_REGEN, pdata->regen,
992 return PTR_ERR(child);
995 /* maybe add LDOs that are omitted on cost-reduced parts */
996 if (twl_has_regulator() && !(features & TPS_SUBSET)
997 && twl_class_is_4030()) {
998 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2,
1001 return PTR_ERR(child);
1003 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2,
1006 return PTR_ERR(child);
1008 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim,
1011 return PTR_ERR(child);
1013 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1,
1016 return PTR_ERR(child);
1018 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3,
1021 return PTR_ERR(child);
1023 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4,
1026 return PTR_ERR(child);
1029 /* twl6030 regulators */
1030 if (twl_has_regulator() && twl_class_is_6030() &&
1031 !(features & TWL6025_SUBCLASS)) {
1032 child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1,
1035 return PTR_ERR(child);
1037 child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2,
1040 return PTR_ERR(child);
1042 child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3,
1045 return PTR_ERR(child);
1047 child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc,
1050 return PTR_ERR(child);
1052 child = add_regulator(TWL6030_REG_VPP, pdata->vpp,
1055 return PTR_ERR(child);
1057 child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim,
1060 return PTR_ERR(child);
1062 child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio,
1065 return PTR_ERR(child);
1067 child = add_regulator(TWL6030_REG_VDAC, pdata->vdac,
1070 return PTR_ERR(child);
1072 child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1,
1075 return PTR_ERR(child);
1077 child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2,
1080 return PTR_ERR(child);
1082 child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3,
1085 return PTR_ERR(child);
1087 child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg,
1090 return PTR_ERR(child);
1093 /* 6030 and 6025 share this regulator */
1094 if (twl_has_regulator() && twl_class_is_6030()) {
1095 child = add_regulator(TWL6030_REG_VANA, pdata->vana,
1098 return PTR_ERR(child);
1101 /* twl6025 regulators */
1102 if (twl_has_regulator() && twl_class_is_6030() &&
1103 (features & TWL6025_SUBCLASS)) {
1104 child = add_regulator(TWL6025_REG_LDO5, pdata->ldo5,
1107 return PTR_ERR(child);
1109 child = add_regulator(TWL6025_REG_LDO1, pdata->ldo1,
1112 return PTR_ERR(child);
1114 child = add_regulator(TWL6025_REG_LDO7, pdata->ldo7,
1117 return PTR_ERR(child);
1119 child = add_regulator(TWL6025_REG_LDO6, pdata->ldo6,
1122 return PTR_ERR(child);
1124 child = add_regulator(TWL6025_REG_LDOLN, pdata->ldoln,
1127 return PTR_ERR(child);
1129 child = add_regulator(TWL6025_REG_LDO2, pdata->ldo2,
1132 return PTR_ERR(child);
1134 child = add_regulator(TWL6025_REG_LDO4, pdata->ldo4,
1137 return PTR_ERR(child);
1139 child = add_regulator(TWL6025_REG_LDO3, pdata->ldo3,
1142 return PTR_ERR(child);
1144 child = add_regulator(TWL6025_REG_SMPS3, pdata->smps3,
1147 return PTR_ERR(child);
1149 child = add_regulator(TWL6025_REG_SMPS4, pdata->smps4,
1152 return PTR_ERR(child);
1154 child = add_regulator(TWL6025_REG_VIO, pdata->vio6025,
1157 return PTR_ERR(child);
1161 if (twl_has_bci() && pdata->bci &&
1162 !(features & (TPS_SUBSET | TWL5031))) {
1163 child = add_child(3, "twl4030_bci",
1164 pdata->bci, sizeof(*pdata->bci), false,
1165 /* irq0 = CHG_PRES, irq1 = BCI */
1166 pdata->irq_base + BCI_PRES_INTR_OFFSET,
1167 pdata->irq_base + BCI_INTR_OFFSET);
1169 return PTR_ERR(child);
1175 /*----------------------------------------------------------------------*/
1178 * These three functions initialize the on-chip clock framework,
1179 * letting it generate the right frequencies for USB, MADC, and
1182 static inline int __init protect_pm_master(void)
1186 e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0,
1187 TWL4030_PM_MASTER_PROTECT_KEY);
1191 static inline int __init unprotect_pm_master(void)
1195 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1196 TWL4030_PM_MASTER_KEY_CFG1,
1197 TWL4030_PM_MASTER_PROTECT_KEY);
1198 e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
1199 TWL4030_PM_MASTER_KEY_CFG2,
1200 TWL4030_PM_MASTER_PROTECT_KEY);
1205 static void clocks_init(struct device *dev,
1206 struct twl4030_clock_init_data *clock)
1211 u8 ctrl = HFCLK_FREQ_26_MHZ;
1213 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
1214 if (cpu_is_omap2430())
1215 osc = clk_get(dev, "osc_ck");
1217 osc = clk_get(dev, "osc_sys_ck");
1220 printk(KERN_WARNING "Skipping twl internal clock init and "
1221 "using bootloader value (unknown osc rate)\n");
1225 rate = clk_get_rate(osc);
1229 /* REVISIT for non-OMAP systems, pass the clock rate from
1230 * board init code, using platform_data.
1232 osc = ERR_PTR(-EIO);
1234 printk(KERN_WARNING "Skipping twl internal clock init and "
1235 "using bootloader value (unknown osc rate)\n");
1242 ctrl = HFCLK_FREQ_19p2_MHZ;
1245 ctrl = HFCLK_FREQ_26_MHZ;
1248 ctrl = HFCLK_FREQ_38p4_MHZ;
1252 ctrl |= HIGH_PERF_SQ;
1253 if (clock && clock->ck32k_lowpwr_enable)
1254 ctrl |= CK32K_LOWPWR_EN;
1256 e |= unprotect_pm_master();
1257 /* effect->MADC+USB ck en */
1258 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
1259 e |= protect_pm_master();
1262 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
1265 /*----------------------------------------------------------------------*/
1267 int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1268 int twl4030_exit_irq(void);
1269 int twl4030_init_chip_irq(const char *chip);
1270 int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
1271 int twl6030_exit_irq(void);
1273 static int twl_remove(struct i2c_client *client)
1278 if (twl_class_is_4030())
1279 status = twl4030_exit_irq();
1281 status = twl6030_exit_irq();
1286 for (i = 0; i < TWL_NUM_SLAVES; i++) {
1287 struct twl_client *twl = &twl_modules[i];
1289 if (twl->client && twl->client != client)
1290 i2c_unregister_device(twl->client);
1291 twl_modules[i].client = NULL;
1297 /* NOTE: this driver only handles a single twl4030/tps659x0 chip */
1298 static int __devinit
1299 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
1303 struct twl4030_platform_data *pdata = client->dev.platform_data;
1308 dev_dbg(&client->dev, "no platform data?\n");
1312 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
1313 dev_dbg(&client->dev, "can't talk I2C?\n");
1318 dev_dbg(&client->dev, "driver is already in use\n");
1322 for (i = 0; i < TWL_NUM_SLAVES; i++) {
1323 struct twl_client *twl = &twl_modules[i];
1325 twl->address = client->addr + i;
1327 twl->client = client;
1329 twl->client = i2c_new_dummy(client->adapter,
1332 dev_err(&client->dev,
1333 "can't attach client %d\n", i);
1338 mutex_init(&twl->xfer_lock);
1341 if ((id->driver_data) & TWL6030_CLASS) {
1342 twl_id = TWL6030_CLASS_ID;
1343 twl_map = &twl6030_map[0];
1345 twl_id = TWL4030_CLASS_ID;
1346 twl_map = &twl4030_map[0];
1349 /* setup clock framework */
1350 clocks_init(&client->dev, pdata->clock);
1352 /* read TWL IDCODE Register */
1353 if (twl_id == TWL4030_CLASS_ID) {
1354 ret = twl_read_idcode_register();
1355 WARN(ret < 0, "Error: reading twl_idcode register value\n");
1358 /* load power event scripts */
1359 if (twl_has_power() && pdata->power)
1360 twl4030_power_init(pdata->power);
1362 /* Maybe init the T2 Interrupt subsystem */
1365 && pdata->irq_end > pdata->irq_base) {
1366 if (twl_class_is_4030()) {
1367 twl4030_init_chip_irq(id->name);
1368 status = twl4030_init_irq(client->irq, pdata->irq_base,
1371 status = twl6030_init_irq(client->irq, pdata->irq_base,
1379 /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
1380 * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
1381 * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
1384 if (twl_class_is_4030()) {
1385 twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
1386 temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
1387 I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
1388 twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
1391 status = add_children(pdata, id->driver_data);
1395 if (pdata->dep_device) {
1396 ret = platform_device_register(pdata->dep_device);
1398 dev_err(&client->dev,
1399 "failed to register dep_device: %d\n", ret);
1408 static const struct i2c_device_id twl_ids[] = {
1409 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
1410 { "twl5030", 0 }, /* T2 updated */
1411 { "twl5031", TWL5031 }, /* TWL5030 updated */
1412 { "tps65950", 0 }, /* catalog version of twl5030 */
1413 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
1414 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
1415 { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED
1416 and vibrator. Charger in USB module*/
1417 { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
1418 { "twl6025", TWL6030_CLASS | TWL6025_SUBCLASS }, /* "Phoenix lite" */
1419 { /* end of list */ },
1421 MODULE_DEVICE_TABLE(i2c, twl_ids);
1423 /* One Client Driver , 4 Clients */
1424 static struct i2c_driver twl_driver = {
1425 .driver.name = DRIVER_NAME,
1426 .id_table = twl_ids,
1428 .remove = twl_remove,
1431 static int __init twl_init(void)
1433 return i2c_add_driver(&twl_driver);
1435 subsys_initcall(twl_init);
1437 static void __exit twl_exit(void)
1439 i2c_del_driver(&twl_driver);
1441 module_exit(twl_exit);
1443 MODULE_AUTHOR("Texas Instruments, Inc.");
1444 MODULE_DESCRIPTION("I2C Core interface for TWL");
1445 MODULE_LICENSE("GPL");