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_TWL4030_BCI_BATTERY) || \
62 defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
63 #define twl_has_bci() true
65 #define twl_has_bci() false
68 #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
69 #define twl_has_keypad() true
71 #define twl_has_keypad() false
74 #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
75 #define twl_has_gpio() true
77 #define twl_has_gpio() false
80 #if defined(CONFIG_REGULATOR_TWL4030) \
81 || defined(CONFIG_REGULATOR_TWL4030_MODULE)
82 #define twl_has_regulator() true
84 #define twl_has_regulator() false
87 #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
88 #define twl_has_madc() true
90 #define twl_has_madc() false
93 #ifdef CONFIG_TWL4030_POWER
94 #define twl_has_power() true
96 #define twl_has_power() false
99 #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
100 #define twl_has_rtc() true
102 #define twl_has_rtc() false
105 #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE)
106 #define twl_has_usb() true
108 #define twl_has_usb() false
111 #if defined(CONFIG_TWL4030_WATCHDOG) || \
112 defined(CONFIG_TWL4030_WATCHDOG_MODULE)
113 #define twl_has_watchdog() true
115 #define twl_has_watchdog() false
118 #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE)
119 #define twl_has_codec() true
121 #define twl_has_codec() false
124 /* Triton Core internal information (BEGIN) */
126 /* Last - for index max*/
127 #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
129 #define TWL_NUM_SLAVES 4
131 #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
132 || defined(CONFIG_INPUT_TWL4030_PWBUTTON_MODULE)
133 #define twl_has_pwrbutton() true
135 #define twl_has_pwrbutton() false
138 #define SUB_CHIP_ID0 0
139 #define SUB_CHIP_ID1 1
140 #define SUB_CHIP_ID2 2
141 #define SUB_CHIP_ID3 3
143 #define TWL_MODULE_LAST TWL4030_MODULE_LAST
145 /* Base Address defns for twl4030_map[] */
147 /* subchip/slave 0 - USB ID */
148 #define TWL4030_BASEADD_USB 0x0000
150 /* subchip/slave 1 - AUD ID */
151 #define TWL4030_BASEADD_AUDIO_VOICE 0x0000
152 #define TWL4030_BASEADD_GPIO 0x0098
153 #define TWL4030_BASEADD_INTBR 0x0085
154 #define TWL4030_BASEADD_PIH 0x0080
155 #define TWL4030_BASEADD_TEST 0x004C
157 /* subchip/slave 2 - AUX ID */
158 #define TWL4030_BASEADD_INTERRUPTS 0x00B9
159 #define TWL4030_BASEADD_LED 0x00EE
160 #define TWL4030_BASEADD_MADC 0x0000
161 #define TWL4030_BASEADD_MAIN_CHARGE 0x0074
162 #define TWL4030_BASEADD_PRECHARGE 0x00AA
163 #define TWL4030_BASEADD_PWM0 0x00F8
164 #define TWL4030_BASEADD_PWM1 0x00FB
165 #define TWL4030_BASEADD_PWMA 0x00EF
166 #define TWL4030_BASEADD_PWMB 0x00F1
167 #define TWL4030_BASEADD_KEYPAD 0x00D2
169 #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
170 #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
173 /* subchip/slave 3 - POWER ID */
174 #define TWL4030_BASEADD_BACKUP 0x0014
175 #define TWL4030_BASEADD_INT 0x002E
176 #define TWL4030_BASEADD_PM_MASTER 0x0036
177 #define TWL4030_BASEADD_PM_RECEIVER 0x005B
178 #define TWL4030_BASEADD_RTC 0x001C
179 #define TWL4030_BASEADD_SECURED_REG 0x0000
181 /* Triton Core internal information (END) */
184 /* Few power values */
185 #define R_CFG_BOOT 0x05
186 #define R_PROTECT_KEY 0x0E
188 /* access control values for R_PROTECT_KEY */
189 #define KEY_UNLOCK1 0xce
190 #define KEY_UNLOCK2 0xec
191 #define KEY_LOCK 0x00
193 /* some fields in R_CFG_BOOT */
194 #define HFCLK_FREQ_19p2_MHZ (1 << 0)
195 #define HFCLK_FREQ_26_MHZ (2 << 0)
196 #define HFCLK_FREQ_38p4_MHZ (3 << 0)
197 #define HIGH_PERF_SQ (1 << 3)
198 #define CK32K_LOWPWR_EN (1 << 7)
201 /* chip-specific feature flags, for i2c_device_id.driver_data */
202 #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
203 #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
204 #define TWL5031 BIT(2) /* twl5031 has different registers */
206 /*----------------------------------------------------------------------*/
208 /* is driver active, bound to a chip? */
211 /* Structure for each TWL4030 Slave */
213 struct i2c_client *client;
216 /* max numb of i2c_msg required is for read =2 */
217 struct i2c_msg xfer_msg[2];
219 /* To lock access to xfer_msg */
220 struct mutex xfer_lock;
223 static struct twl_client twl_modules[TWL_NUM_SLAVES];
226 /* mapping the module id to slave id and base address */
228 unsigned char sid; /* Slave ID */
229 unsigned char base; /* base address */
232 static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
234 * NOTE: don't change this table without updating the
235 * <linux/i2c/twl4030.h> defines for TWL4030_MODULE_*
236 * so they continue to match the order in this table.
239 { 0, TWL4030_BASEADD_USB },
241 { 1, TWL4030_BASEADD_AUDIO_VOICE },
242 { 1, TWL4030_BASEADD_GPIO },
243 { 1, TWL4030_BASEADD_INTBR },
244 { 1, TWL4030_BASEADD_PIH },
245 { 1, TWL4030_BASEADD_TEST },
247 { 2, TWL4030_BASEADD_KEYPAD },
248 { 2, TWL4030_BASEADD_MADC },
249 { 2, TWL4030_BASEADD_INTERRUPTS },
250 { 2, TWL4030_BASEADD_LED },
251 { 2, TWL4030_BASEADD_MAIN_CHARGE },
252 { 2, TWL4030_BASEADD_PRECHARGE },
253 { 2, TWL4030_BASEADD_PWM0 },
254 { 2, TWL4030_BASEADD_PWM1 },
255 { 2, TWL4030_BASEADD_PWMA },
256 { 2, TWL4030_BASEADD_PWMB },
257 { 2, TWL5031_BASEADD_ACCESSORY },
258 { 2, TWL5031_BASEADD_INTERRUPTS },
260 { 3, TWL4030_BASEADD_BACKUP },
261 { 3, TWL4030_BASEADD_INT },
262 { 3, TWL4030_BASEADD_PM_MASTER },
263 { 3, TWL4030_BASEADD_PM_RECEIVER },
264 { 3, TWL4030_BASEADD_RTC },
265 { 3, TWL4030_BASEADD_SECURED_REG },
268 /*----------------------------------------------------------------------*/
270 /* Exported Functions */
273 * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
274 * @mod_no: module number
275 * @value: an array of num_bytes+1 containing data to write
276 * @reg: register address (just offset will do)
277 * @num_bytes: number of bytes to transfer
279 * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
280 * valid data starts at Offset 1.
282 * Returns the result of operation - 0 is success
284 int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
288 struct twl_client *twl;
291 if (unlikely(mod_no > TWL_MODULE_LAST)) {
292 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
295 sid = twl4030_map[mod_no].sid;
296 twl = &twl_modules[sid];
298 if (unlikely(!inuse)) {
299 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
302 mutex_lock(&twl->xfer_lock);
304 * [MSG1]: fill the register address data
305 * fill the data Tx buffer
307 msg = &twl->xfer_msg[0];
308 msg->addr = twl->address;
309 msg->len = num_bytes + 1;
312 /* over write the first byte of buffer with the register address */
313 *value = twl4030_map[mod_no].base + reg;
314 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
315 mutex_unlock(&twl->xfer_lock);
317 /* i2c_transfer returns number of messages transferred */
319 pr_err("%s: i2c_write failed to transfer all messages\n",
329 EXPORT_SYMBOL(twl_i2c_write);
332 * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
333 * @mod_no: module number
334 * @value: an array of num_bytes containing data to be read
335 * @reg: register address (just offset will do)
336 * @num_bytes: number of bytes to transfer
338 * Returns result of operation - num_bytes is success else failure.
340 int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
345 struct twl_client *twl;
348 if (unlikely(mod_no > TWL_MODULE_LAST)) {
349 pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
352 sid = twl4030_map[mod_no].sid;
353 twl = &twl_modules[sid];
355 if (unlikely(!inuse)) {
356 pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
359 mutex_lock(&twl->xfer_lock);
360 /* [MSG1] fill the register address data */
361 msg = &twl->xfer_msg[0];
362 msg->addr = twl->address;
364 msg->flags = 0; /* Read the register value */
365 val = twl4030_map[mod_no].base + reg;
367 /* [MSG2] fill the data rx buffer */
368 msg = &twl->xfer_msg[1];
369 msg->addr = twl->address;
370 msg->flags = I2C_M_RD; /* Read the register value */
371 msg->len = num_bytes; /* only n bytes */
373 ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
374 mutex_unlock(&twl->xfer_lock);
376 /* i2c_transfer returns number of messages transferred */
378 pr_err("%s: i2c_read failed to transfer all messages\n",
388 EXPORT_SYMBOL(twl_i2c_read);
391 * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
392 * @mod_no: module number
393 * @value: the value to be written 8 bit
394 * @reg: register address (just offset will do)
396 * Returns result of operation - 0 is success
398 int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
401 /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
402 u8 temp_buffer[2] = { 0 };
403 /* offset 1 contains the data */
404 temp_buffer[1] = value;
405 return twl_i2c_write(mod_no, temp_buffer, reg, 1);
407 EXPORT_SYMBOL(twl_i2c_write_u8);
410 * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
411 * @mod_no: module number
412 * @value: the value read 8 bit
413 * @reg: register address (just offset will do)
415 * Returns result of operation - 0 is success
417 int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
419 return twl_i2c_read(mod_no, value, reg, 1);
421 EXPORT_SYMBOL(twl_i2c_read_u8);
423 /*----------------------------------------------------------------------*/
425 static struct device *
426 add_numbered_child(unsigned chip, const char *name, int num,
427 void *pdata, unsigned pdata_len,
428 bool can_wakeup, int irq0, int irq1)
430 struct platform_device *pdev;
431 struct twl_client *twl = &twl_modules[chip];
434 pdev = platform_device_alloc(name, num);
436 dev_dbg(&twl->client->dev, "can't alloc dev\n");
441 device_init_wakeup(&pdev->dev, can_wakeup);
442 pdev->dev.parent = &twl->client->dev;
445 status = platform_device_add_data(pdev, pdata, pdata_len);
447 dev_dbg(&pdev->dev, "can't add platform_data\n");
453 struct resource r[2] = {
454 { .start = irq0, .flags = IORESOURCE_IRQ, },
455 { .start = irq1, .flags = IORESOURCE_IRQ, },
458 status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
460 dev_dbg(&pdev->dev, "can't add irqs\n");
465 status = platform_device_add(pdev);
469 platform_device_put(pdev);
470 dev_err(&twl->client->dev, "can't add %s dev\n", name);
471 return ERR_PTR(status);
476 static inline struct device *add_child(unsigned chip, const char *name,
477 void *pdata, unsigned pdata_len,
478 bool can_wakeup, int irq0, int irq1)
480 return add_numbered_child(chip, name, -1, pdata, pdata_len,
481 can_wakeup, irq0, irq1);
484 static struct device *
485 add_regulator_linked(int num, struct regulator_init_data *pdata,
486 struct regulator_consumer_supply *consumers,
487 unsigned num_consumers)
489 /* regulator framework demands init_data ... */
494 pdata->consumer_supplies = consumers;
495 pdata->num_consumer_supplies = num_consumers;
498 /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
499 return add_numbered_child(3, "twl4030_reg", num,
500 pdata, sizeof(*pdata), false, 0, 0);
503 static struct device *
504 add_regulator(int num, struct regulator_init_data *pdata)
506 return add_regulator_linked(num, pdata, NULL, 0);
510 * NOTE: We know the first 8 IRQs after pdata->base_irq are
511 * for the PIH, and the next are for the PWR_INT SIH, since
512 * that's how twl_init_irq() sets things up.
516 add_children(struct twl4030_platform_data *pdata, unsigned long features)
518 struct device *child;
520 if (twl_has_bci() && pdata->bci &&
521 !(features & (TPS_SUBSET | TWL5031))) {
522 child = add_child(3, "twl4030_bci",
523 pdata->bci, sizeof(*pdata->bci),
525 /* irq0 = CHG_PRES, irq1 = BCI */
526 pdata->irq_base + BCI_PRES_INTR_OFFSET,
527 pdata->irq_base + BCI_INTR_OFFSET);
529 return PTR_ERR(child);
532 if (twl_has_gpio() && pdata->gpio) {
533 child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
534 pdata->gpio, sizeof(*pdata->gpio),
535 false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
537 return PTR_ERR(child);
540 if (twl_has_keypad() && pdata->keypad) {
541 child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
542 pdata->keypad, sizeof(*pdata->keypad),
543 true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
545 return PTR_ERR(child);
548 if (twl_has_madc() && pdata->madc) {
549 child = add_child(2, "twl4030_madc",
550 pdata->madc, sizeof(*pdata->madc),
551 true, pdata->irq_base + MADC_INTR_OFFSET, 0);
553 return PTR_ERR(child);
558 * REVISIT platform_data here currently might expose the
559 * "msecure" line ... but for now we just expect board
560 * setup to tell the chip "it's always ok to SET_TIME".
561 * Eventually, Linux might become more aware of such
562 * HW security concerns, and "least privilege".
564 child = add_child(3, "twl4030_rtc",
566 true, pdata->irq_base + RTC_INTR_OFFSET, 0);
568 return PTR_ERR(child);
571 if (twl_has_usb() && pdata->usb) {
573 static struct regulator_consumer_supply usb1v5 = {
576 static struct regulator_consumer_supply usb1v8 = {
579 static struct regulator_consumer_supply usb3v1 = {
583 /* First add the regulators so that they can be used by transceiver */
584 if (twl_has_regulator()) {
585 /* this is a template that gets copied */
586 struct regulator_init_data usb_fixed = {
587 .constraints.valid_modes_mask =
588 REGULATOR_MODE_NORMAL
589 | REGULATOR_MODE_STANDBY,
590 .constraints.valid_ops_mask =
591 REGULATOR_CHANGE_MODE
592 | REGULATOR_CHANGE_STATUS,
595 child = add_regulator_linked(TWL4030_REG_VUSB1V5,
596 &usb_fixed, &usb1v5, 1);
598 return PTR_ERR(child);
600 child = add_regulator_linked(TWL4030_REG_VUSB1V8,
601 &usb_fixed, &usb1v8, 1);
603 return PTR_ERR(child);
605 child = add_regulator_linked(TWL4030_REG_VUSB3V1,
606 &usb_fixed, &usb3v1, 1);
608 return PTR_ERR(child);
612 child = add_child(0, "twl4030_usb",
613 pdata->usb, sizeof(*pdata->usb),
615 /* irq0 = USB_PRES, irq1 = USB */
616 pdata->irq_base + USB_PRES_INTR_OFFSET,
617 pdata->irq_base + USB_INTR_OFFSET);
620 return PTR_ERR(child);
622 /* we need to connect regulators to this transceiver */
623 if (twl_has_regulator() && child) {
630 if (twl_has_watchdog()) {
631 child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
633 return PTR_ERR(child);
636 if (twl_has_pwrbutton()) {
637 child = add_child(1, "twl4030_pwrbutton",
638 NULL, 0, true, pdata->irq_base + 8 + 0, 0);
640 return PTR_ERR(child);
643 if (twl_has_codec() && pdata->codec) {
644 child = add_child(1, "twl4030_codec",
645 pdata->codec, sizeof(*pdata->codec),
648 return PTR_ERR(child);
651 if (twl_has_regulator()) {
652 child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1);
654 return PTR_ERR(child);
656 child = add_regulator(TWL4030_REG_VIO, pdata->vio);
658 return PTR_ERR(child);
660 child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1);
662 return PTR_ERR(child);
664 child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2);
666 return PTR_ERR(child);
668 child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1);
670 return PTR_ERR(child);
672 child = add_regulator(TWL4030_REG_VDAC, pdata->vdac);
674 return PTR_ERR(child);
676 child = add_regulator((features & TWL4030_VAUX2)
677 ? TWL4030_REG_VAUX2_4030
681 return PTR_ERR(child);
683 child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1);
685 return PTR_ERR(child);
687 child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2);
689 return PTR_ERR(child);
691 child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig);
693 return PTR_ERR(child);
696 /* maybe add LDOs that are omitted on cost-reduced parts */
697 if (twl_has_regulator() && !(features & TPS_SUBSET)) {
698 child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2);
700 return PTR_ERR(child);
702 child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2);
704 return PTR_ERR(child);
706 child = add_regulator(TWL4030_REG_VSIM, pdata->vsim);
708 return PTR_ERR(child);
710 child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1);
712 return PTR_ERR(child);
714 child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3);
716 return PTR_ERR(child);
718 child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4);
720 return PTR_ERR(child);
726 /*----------------------------------------------------------------------*/
729 * These three functions initialize the on-chip clock framework,
730 * letting it generate the right frequencies for USB, MADC, and
733 static inline int __init protect_pm_master(void)
737 e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_LOCK,
742 static inline int __init unprotect_pm_master(void)
746 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK1,
748 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK2,
753 static void clocks_init(struct device *dev,
754 struct twl4030_clock_init_data *clock)
759 u8 ctrl = HFCLK_FREQ_26_MHZ;
761 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
762 if (cpu_is_omap2430())
763 osc = clk_get(dev, "osc_ck");
765 osc = clk_get(dev, "osc_sys_ck");
768 printk(KERN_WARNING "Skipping twl internal clock init and "
769 "using bootloader value (unknown osc rate)\n");
773 rate = clk_get_rate(osc);
777 /* REVISIT for non-OMAP systems, pass the clock rate from
778 * board init code, using platform_data.
782 printk(KERN_WARNING "Skipping twl internal clock init and "
783 "using bootloader value (unknown osc rate)\n");
790 ctrl = HFCLK_FREQ_19p2_MHZ;
793 ctrl = HFCLK_FREQ_26_MHZ;
796 ctrl = HFCLK_FREQ_38p4_MHZ;
800 ctrl |= HIGH_PERF_SQ;
801 if (clock && clock->ck32k_lowpwr_enable)
802 ctrl |= CK32K_LOWPWR_EN;
804 e |= unprotect_pm_master();
805 /* effect->MADC+USB ck en */
806 e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
807 e |= protect_pm_master();
810 pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
813 /*----------------------------------------------------------------------*/
815 int twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
816 int twl_exit_irq(void);
817 int twl_init_chip_irq(const char *chip);
819 static int twl_remove(struct i2c_client *client)
824 status = twl_exit_irq();
828 for (i = 0; i < TWL_NUM_SLAVES; i++) {
829 struct twl_client *twl = &twl_modules[i];
831 if (twl->client && twl->client != client)
832 i2c_unregister_device(twl->client);
833 twl_modules[i].client = NULL;
839 /* NOTE: this driver only handles a single twl4030/tps659x0 chip */
841 twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
845 struct twl4030_platform_data *pdata = client->dev.platform_data;
848 dev_dbg(&client->dev, "no platform data?\n");
852 if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
853 dev_dbg(&client->dev, "can't talk I2C?\n");
858 dev_dbg(&client->dev, "driver is already in use\n");
862 for (i = 0; i < TWL_NUM_SLAVES; i++) {
863 struct twl_client *twl = &twl_modules[i];
865 twl->address = client->addr + i;
867 twl->client = client;
869 twl->client = i2c_new_dummy(client->adapter,
872 dev_err(&client->dev,
873 "can't attach client %d\n", i);
878 mutex_init(&twl->xfer_lock);
882 /* setup clock framework */
883 clocks_init(&client->dev, pdata->clock);
885 /* load power event scripts */
886 if (twl_has_power() && pdata->power)
887 twl4030_power_init(pdata->power);
889 /* Maybe init the T2 Interrupt subsystem */
892 && pdata->irq_end > pdata->irq_base) {
893 twl_init_chip_irq(id->name);
894 status = twl_init_irq(client->irq, pdata->irq_base, pdata->irq_end);
899 status = add_children(pdata, id->driver_data);
906 static const struct i2c_device_id twl_ids[] = {
907 { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
908 { "twl5030", 0 }, /* T2 updated */
909 { "twl5031", TWL5031 }, /* TWL5030 updated */
910 { "tps65950", 0 }, /* catalog version of twl5030 */
911 { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
912 { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
913 { /* end of list */ },
915 MODULE_DEVICE_TABLE(i2c, twl_ids);
917 /* One Client Driver , 4 Clients */
918 static struct i2c_driver twl_driver = {
919 .driver.name = DRIVER_NAME,
922 .remove = twl_remove,
925 static int __init twl_init(void)
927 return i2c_add_driver(&twl_driver);
929 subsys_initcall(twl_init);
931 static void __exit twl_exit(void)
933 i2c_del_driver(&twl_driver);
935 module_exit(twl_exit);
937 MODULE_AUTHOR("Texas Instruments, Inc.");
938 MODULE_DESCRIPTION("I2C Core interface for TWL");
939 MODULE_LICENSE("GPL");