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a603a7fa DB |
1 | /* |
2 | * twl4030_core.c - driver for TWL4030/TPS659x0 PM and audio CODEC devices | |
3 | * | |
4 | * Copyright (C) 2005-2006 Texas Instruments, Inc. | |
5 | * | |
6 | * Modifications to defer interrupt handling to a kernel thread: | |
7 | * Copyright (C) 2006 MontaVista Software, Inc. | |
8 | * | |
9 | * Based on tlv320aic23.c: | |
10 | * Copyright (c) by Kai Svahn <kai.svahn@nokia.com> | |
11 | * | |
12 | * Code cleanup and modifications to IRQ handler. | |
13 | * by syed khasim <x0khasim@ti.com> | |
14 | * | |
15 | * This program is free software; you can redistribute it and/or modify | |
16 | * it under the terms of the GNU General Public License as published by | |
17 | * the Free Software Foundation; either version 2 of the License, or | |
18 | * (at your option) any later version. | |
19 | * | |
20 | * This program is distributed in the hope that it will be useful, | |
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | * GNU General Public License for more details. | |
24 | * | |
25 | * You should have received a copy of the GNU General Public License | |
26 | * along with this program; if not, write to the Free Software | |
27 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
28 | */ | |
29 | ||
a603a7fa DB |
30 | #include <linux/init.h> |
31 | #include <linux/mutex.h> | |
a603a7fa DB |
32 | #include <linux/platform_device.h> |
33 | #include <linux/clk.h> | |
a30d46c0 | 34 | #include <linux/err.h> |
a603a7fa | 35 | |
dad759ff DB |
36 | #include <linux/regulator/machine.h> |
37 | ||
a603a7fa DB |
38 | #include <linux/i2c.h> |
39 | #include <linux/i2c/twl4030.h> | |
40 | ||
a313d758 | 41 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) |
b29c06ae SO |
42 | #include <mach/cpu.h> |
43 | #endif | |
a603a7fa DB |
44 | |
45 | /* | |
46 | * The TWL4030 "Triton 2" is one of a family of a multi-function "Power | |
47 | * Management and System Companion Device" chips originally designed for | |
48 | * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, | |
49 | * often at around 3 Mbit/sec, including for interrupt handling. | |
50 | * | |
51 | * This driver core provides genirq support for the interrupts emitted, | |
52 | * by the various modules, and exports register access primitives. | |
53 | * | |
54 | * FIXME this driver currently requires use of the first interrupt line | |
55 | * (and associated registers). | |
56 | */ | |
57 | ||
58 | #define DRIVER_NAME "twl4030" | |
59 | ||
60 | #if defined(CONFIG_TWL4030_BCI_BATTERY) || \ | |
61 | defined(CONFIG_TWL4030_BCI_BATTERY_MODULE) | |
62 | #define twl_has_bci() true | |
63 | #else | |
64 | #define twl_has_bci() false | |
65 | #endif | |
66 | ||
67 | #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE) | |
68 | #define twl_has_keypad() true | |
69 | #else | |
70 | #define twl_has_keypad() false | |
71 | #endif | |
72 | ||
73 | #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE) | |
74 | #define twl_has_gpio() true | |
75 | #else | |
76 | #define twl_has_gpio() false | |
77 | #endif | |
78 | ||
dad759ff DB |
79 | #if defined(CONFIG_REGULATOR_TWL4030) \ |
80 | || defined(CONFIG_REGULATOR_TWL4030_MODULE) | |
81 | #define twl_has_regulator() true | |
82 | #else | |
83 | #define twl_has_regulator() false | |
84 | #endif | |
85 | ||
a603a7fa DB |
86 | #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE) |
87 | #define twl_has_madc() true | |
88 | #else | |
89 | #define twl_has_madc() false | |
90 | #endif | |
91 | ||
ebf0bd36 AK |
92 | #ifdef CONFIG_TWL4030_POWER |
93 | #define twl_has_power() true | |
94 | #else | |
95 | #define twl_has_power() false | |
96 | #endif | |
97 | ||
a603a7fa DB |
98 | #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE) |
99 | #define twl_has_rtc() true | |
100 | #else | |
101 | #define twl_has_rtc() false | |
102 | #endif | |
103 | ||
104 | #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) | |
105 | #define twl_has_usb() true | |
106 | #else | |
107 | #define twl_has_usb() false | |
108 | #endif | |
109 | ||
80e45b1e TK |
110 | #if defined(CONFIG_TWL4030_WATCHDOG) || \ |
111 | defined(CONFIG_TWL4030_WATCHDOG_MODULE) | |
112 | #define twl_has_watchdog() true | |
113 | #else | |
114 | #define twl_has_watchdog() false | |
115 | #endif | |
a603a7fa | 116 | |
0b83ddeb PU |
117 | #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) |
118 | #define twl_has_codec() true | |
119 | #else | |
120 | #define twl_has_codec() false | |
121 | #endif | |
122 | ||
a603a7fa DB |
123 | /* Triton Core internal information (BEGIN) */ |
124 | ||
125 | /* Last - for index max*/ | |
126 | #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG | |
127 | ||
128 | #define TWL4030_NUM_SLAVES 4 | |
129 | ||
9c3664dd FB |
130 | #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \ |
131 | || defined(CONFIG_INPUT_TWL4030_PWBUTTON_MODULE) | |
132 | #define twl_has_pwrbutton() true | |
133 | #else | |
134 | #define twl_has_pwrbutton() false | |
135 | #endif | |
a603a7fa DB |
136 | |
137 | /* Base Address defns for twl4030_map[] */ | |
138 | ||
139 | /* subchip/slave 0 - USB ID */ | |
140 | #define TWL4030_BASEADD_USB 0x0000 | |
141 | ||
142 | /* subchip/slave 1 - AUD ID */ | |
143 | #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 | |
144 | #define TWL4030_BASEADD_GPIO 0x0098 | |
145 | #define TWL4030_BASEADD_INTBR 0x0085 | |
146 | #define TWL4030_BASEADD_PIH 0x0080 | |
147 | #define TWL4030_BASEADD_TEST 0x004C | |
148 | ||
149 | /* subchip/slave 2 - AUX ID */ | |
150 | #define TWL4030_BASEADD_INTERRUPTS 0x00B9 | |
151 | #define TWL4030_BASEADD_LED 0x00EE | |
152 | #define TWL4030_BASEADD_MADC 0x0000 | |
153 | #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 | |
154 | #define TWL4030_BASEADD_PRECHARGE 0x00AA | |
155 | #define TWL4030_BASEADD_PWM0 0x00F8 | |
156 | #define TWL4030_BASEADD_PWM1 0x00FB | |
157 | #define TWL4030_BASEADD_PWMA 0x00EF | |
158 | #define TWL4030_BASEADD_PWMB 0x00F1 | |
159 | #define TWL4030_BASEADD_KEYPAD 0x00D2 | |
160 | ||
161 | /* subchip/slave 3 - POWER ID */ | |
162 | #define TWL4030_BASEADD_BACKUP 0x0014 | |
163 | #define TWL4030_BASEADD_INT 0x002E | |
164 | #define TWL4030_BASEADD_PM_MASTER 0x0036 | |
165 | #define TWL4030_BASEADD_PM_RECEIVER 0x005B | |
166 | #define TWL4030_BASEADD_RTC 0x001C | |
167 | #define TWL4030_BASEADD_SECURED_REG 0x0000 | |
168 | ||
169 | /* Triton Core internal information (END) */ | |
170 | ||
171 | ||
172 | /* Few power values */ | |
173 | #define R_CFG_BOOT 0x05 | |
174 | #define R_PROTECT_KEY 0x0E | |
175 | ||
176 | /* access control values for R_PROTECT_KEY */ | |
177 | #define KEY_UNLOCK1 0xce | |
178 | #define KEY_UNLOCK2 0xec | |
179 | #define KEY_LOCK 0x00 | |
180 | ||
181 | /* some fields in R_CFG_BOOT */ | |
182 | #define HFCLK_FREQ_19p2_MHZ (1 << 0) | |
183 | #define HFCLK_FREQ_26_MHZ (2 << 0) | |
184 | #define HFCLK_FREQ_38p4_MHZ (3 << 0) | |
185 | #define HIGH_PERF_SQ (1 << 3) | |
186 | ||
187 | ||
dad759ff DB |
188 | /* chip-specific feature flags, for i2c_device_id.driver_data */ |
189 | #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */ | |
190 | #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */ | |
191 | ||
a603a7fa DB |
192 | /*----------------------------------------------------------------------*/ |
193 | ||
a603a7fa DB |
194 | /* is driver active, bound to a chip? */ |
195 | static bool inuse; | |
196 | ||
197 | /* Structure for each TWL4030 Slave */ | |
198 | struct twl4030_client { | |
199 | struct i2c_client *client; | |
200 | u8 address; | |
201 | ||
202 | /* max numb of i2c_msg required is for read =2 */ | |
203 | struct i2c_msg xfer_msg[2]; | |
204 | ||
205 | /* To lock access to xfer_msg */ | |
206 | struct mutex xfer_lock; | |
207 | }; | |
208 | ||
209 | static struct twl4030_client twl4030_modules[TWL4030_NUM_SLAVES]; | |
210 | ||
211 | ||
212 | /* mapping the module id to slave id and base address */ | |
213 | struct twl4030mapping { | |
214 | unsigned char sid; /* Slave ID */ | |
215 | unsigned char base; /* base address */ | |
216 | }; | |
217 | ||
218 | static struct twl4030mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { | |
219 | /* | |
220 | * NOTE: don't change this table without updating the | |
221 | * <linux/i2c/twl4030.h> defines for TWL4030_MODULE_* | |
222 | * so they continue to match the order in this table. | |
223 | */ | |
224 | ||
225 | { 0, TWL4030_BASEADD_USB }, | |
226 | ||
227 | { 1, TWL4030_BASEADD_AUDIO_VOICE }, | |
228 | { 1, TWL4030_BASEADD_GPIO }, | |
229 | { 1, TWL4030_BASEADD_INTBR }, | |
230 | { 1, TWL4030_BASEADD_PIH }, | |
231 | { 1, TWL4030_BASEADD_TEST }, | |
232 | ||
233 | { 2, TWL4030_BASEADD_KEYPAD }, | |
234 | { 2, TWL4030_BASEADD_MADC }, | |
235 | { 2, TWL4030_BASEADD_INTERRUPTS }, | |
236 | { 2, TWL4030_BASEADD_LED }, | |
237 | { 2, TWL4030_BASEADD_MAIN_CHARGE }, | |
238 | { 2, TWL4030_BASEADD_PRECHARGE }, | |
239 | { 2, TWL4030_BASEADD_PWM0 }, | |
240 | { 2, TWL4030_BASEADD_PWM1 }, | |
241 | { 2, TWL4030_BASEADD_PWMA }, | |
242 | { 2, TWL4030_BASEADD_PWMB }, | |
243 | ||
244 | { 3, TWL4030_BASEADD_BACKUP }, | |
245 | { 3, TWL4030_BASEADD_INT }, | |
246 | { 3, TWL4030_BASEADD_PM_MASTER }, | |
247 | { 3, TWL4030_BASEADD_PM_RECEIVER }, | |
248 | { 3, TWL4030_BASEADD_RTC }, | |
249 | { 3, TWL4030_BASEADD_SECURED_REG }, | |
250 | }; | |
251 | ||
252 | /*----------------------------------------------------------------------*/ | |
253 | ||
a603a7fa DB |
254 | /* Exported Functions */ |
255 | ||
256 | /** | |
257 | * twl4030_i2c_write - Writes a n bit register in TWL4030 | |
258 | * @mod_no: module number | |
259 | * @value: an array of num_bytes+1 containing data to write | |
260 | * @reg: register address (just offset will do) | |
261 | * @num_bytes: number of bytes to transfer | |
262 | * | |
263 | * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and | |
264 | * valid data starts at Offset 1. | |
265 | * | |
266 | * Returns the result of operation - 0 is success | |
267 | */ | |
3fba19ec | 268 | int twl4030_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
269 | { |
270 | int ret; | |
271 | int sid; | |
272 | struct twl4030_client *twl; | |
273 | struct i2c_msg *msg; | |
274 | ||
275 | if (unlikely(mod_no > TWL4030_MODULE_LAST)) { | |
276 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); | |
277 | return -EPERM; | |
278 | } | |
279 | sid = twl4030_map[mod_no].sid; | |
280 | twl = &twl4030_modules[sid]; | |
281 | ||
282 | if (unlikely(!inuse)) { | |
283 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
284 | return -EPERM; | |
285 | } | |
286 | mutex_lock(&twl->xfer_lock); | |
287 | /* | |
288 | * [MSG1]: fill the register address data | |
289 | * fill the data Tx buffer | |
290 | */ | |
291 | msg = &twl->xfer_msg[0]; | |
292 | msg->addr = twl->address; | |
293 | msg->len = num_bytes + 1; | |
294 | msg->flags = 0; | |
295 | msg->buf = value; | |
296 | /* over write the first byte of buffer with the register address */ | |
297 | *value = twl4030_map[mod_no].base + reg; | |
298 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1); | |
299 | mutex_unlock(&twl->xfer_lock); | |
300 | ||
301 | /* i2cTransfer returns num messages.translate it pls.. */ | |
302 | if (ret >= 0) | |
303 | ret = 0; | |
304 | return ret; | |
305 | } | |
306 | EXPORT_SYMBOL(twl4030_i2c_write); | |
307 | ||
308 | /** | |
309 | * twl4030_i2c_read - Reads a n bit register in TWL4030 | |
310 | * @mod_no: module number | |
311 | * @value: an array of num_bytes containing data to be read | |
312 | * @reg: register address (just offset will do) | |
313 | * @num_bytes: number of bytes to transfer | |
314 | * | |
315 | * Returns result of operation - num_bytes is success else failure. | |
316 | */ | |
3fba19ec | 317 | int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
318 | { |
319 | int ret; | |
320 | u8 val; | |
321 | int sid; | |
322 | struct twl4030_client *twl; | |
323 | struct i2c_msg *msg; | |
324 | ||
325 | if (unlikely(mod_no > TWL4030_MODULE_LAST)) { | |
326 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); | |
327 | return -EPERM; | |
328 | } | |
329 | sid = twl4030_map[mod_no].sid; | |
330 | twl = &twl4030_modules[sid]; | |
331 | ||
332 | if (unlikely(!inuse)) { | |
333 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
334 | return -EPERM; | |
335 | } | |
336 | mutex_lock(&twl->xfer_lock); | |
337 | /* [MSG1] fill the register address data */ | |
338 | msg = &twl->xfer_msg[0]; | |
339 | msg->addr = twl->address; | |
340 | msg->len = 1; | |
341 | msg->flags = 0; /* Read the register value */ | |
342 | val = twl4030_map[mod_no].base + reg; | |
343 | msg->buf = &val; | |
344 | /* [MSG2] fill the data rx buffer */ | |
345 | msg = &twl->xfer_msg[1]; | |
346 | msg->addr = twl->address; | |
347 | msg->flags = I2C_M_RD; /* Read the register value */ | |
348 | msg->len = num_bytes; /* only n bytes */ | |
349 | msg->buf = value; | |
350 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); | |
351 | mutex_unlock(&twl->xfer_lock); | |
352 | ||
353 | /* i2cTransfer returns num messages.translate it pls.. */ | |
354 | if (ret >= 0) | |
355 | ret = 0; | |
356 | return ret; | |
357 | } | |
358 | EXPORT_SYMBOL(twl4030_i2c_read); | |
359 | ||
360 | /** | |
361 | * twl4030_i2c_write_u8 - Writes a 8 bit register in TWL4030 | |
362 | * @mod_no: module number | |
363 | * @value: the value to be written 8 bit | |
364 | * @reg: register address (just offset will do) | |
365 | * | |
366 | * Returns result of operation - 0 is success | |
367 | */ | |
368 | int twl4030_i2c_write_u8(u8 mod_no, u8 value, u8 reg) | |
369 | { | |
370 | ||
371 | /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */ | |
372 | u8 temp_buffer[2] = { 0 }; | |
373 | /* offset 1 contains the data */ | |
374 | temp_buffer[1] = value; | |
375 | return twl4030_i2c_write(mod_no, temp_buffer, reg, 1); | |
376 | } | |
377 | EXPORT_SYMBOL(twl4030_i2c_write_u8); | |
378 | ||
379 | /** | |
380 | * twl4030_i2c_read_u8 - Reads a 8 bit register from TWL4030 | |
381 | * @mod_no: module number | |
382 | * @value: the value read 8 bit | |
383 | * @reg: register address (just offset will do) | |
384 | * | |
385 | * Returns result of operation - 0 is success | |
386 | */ | |
387 | int twl4030_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) | |
388 | { | |
389 | return twl4030_i2c_read(mod_no, value, reg, 1); | |
390 | } | |
391 | EXPORT_SYMBOL(twl4030_i2c_read_u8); | |
392 | ||
393 | /*----------------------------------------------------------------------*/ | |
394 | ||
dad759ff DB |
395 | static struct device * |
396 | add_numbered_child(unsigned chip, const char *name, int num, | |
5725d66b DB |
397 | void *pdata, unsigned pdata_len, |
398 | bool can_wakeup, int irq0, int irq1) | |
a603a7fa | 399 | { |
5725d66b DB |
400 | struct platform_device *pdev; |
401 | struct twl4030_client *twl = &twl4030_modules[chip]; | |
402 | int status; | |
403 | ||
dad759ff | 404 | pdev = platform_device_alloc(name, num); |
5725d66b DB |
405 | if (!pdev) { |
406 | dev_dbg(&twl->client->dev, "can't alloc dev\n"); | |
407 | status = -ENOMEM; | |
408 | goto err; | |
409 | } | |
a603a7fa | 410 | |
5725d66b DB |
411 | device_init_wakeup(&pdev->dev, can_wakeup); |
412 | pdev->dev.parent = &twl->client->dev; | |
a603a7fa | 413 | |
5725d66b DB |
414 | if (pdata) { |
415 | status = platform_device_add_data(pdev, pdata, pdata_len); | |
416 | if (status < 0) { | |
417 | dev_dbg(&pdev->dev, "can't add platform_data\n"); | |
a603a7fa DB |
418 | goto err; |
419 | } | |
5725d66b | 420 | } |
a603a7fa | 421 | |
5725d66b DB |
422 | if (irq0) { |
423 | struct resource r[2] = { | |
424 | { .start = irq0, .flags = IORESOURCE_IRQ, }, | |
425 | { .start = irq1, .flags = IORESOURCE_IRQ, }, | |
426 | }; | |
a603a7fa | 427 | |
5725d66b | 428 | status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); |
a603a7fa | 429 | if (status < 0) { |
5725d66b | 430 | dev_dbg(&pdev->dev, "can't add irqs\n"); |
a603a7fa DB |
431 | goto err; |
432 | } | |
433 | } | |
434 | ||
5725d66b | 435 | status = platform_device_add(pdev); |
a603a7fa | 436 | |
5725d66b DB |
437 | err: |
438 | if (status < 0) { | |
439 | platform_device_put(pdev); | |
440 | dev_err(&twl->client->dev, "can't add %s dev\n", name); | |
441 | return ERR_PTR(status); | |
442 | } | |
443 | return &pdev->dev; | |
444 | } | |
a603a7fa | 445 | |
dad759ff DB |
446 | static inline struct device *add_child(unsigned chip, const char *name, |
447 | void *pdata, unsigned pdata_len, | |
448 | bool can_wakeup, int irq0, int irq1) | |
449 | { | |
450 | return add_numbered_child(chip, name, -1, pdata, pdata_len, | |
451 | can_wakeup, irq0, irq1); | |
452 | } | |
453 | ||
454 | static struct device * | |
455 | add_regulator_linked(int num, struct regulator_init_data *pdata, | |
456 | struct regulator_consumer_supply *consumers, | |
457 | unsigned num_consumers) | |
458 | { | |
459 | /* regulator framework demands init_data ... */ | |
460 | if (!pdata) | |
461 | return NULL; | |
462 | ||
b73eac78 | 463 | if (consumers) { |
dad759ff DB |
464 | pdata->consumer_supplies = consumers; |
465 | pdata->num_consumer_supplies = num_consumers; | |
466 | } | |
467 | ||
468 | /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ | |
469 | return add_numbered_child(3, "twl4030_reg", num, | |
470 | pdata, sizeof(*pdata), false, 0, 0); | |
471 | } | |
472 | ||
473 | static struct device * | |
474 | add_regulator(int num, struct regulator_init_data *pdata) | |
475 | { | |
476 | return add_regulator_linked(num, pdata, NULL, 0); | |
477 | } | |
478 | ||
5725d66b DB |
479 | /* |
480 | * NOTE: We know the first 8 IRQs after pdata->base_irq are | |
481 | * for the PIH, and the next are for the PWR_INT SIH, since | |
482 | * that's how twl_init_irq() sets things up. | |
483 | */ | |
a603a7fa | 484 | |
dad759ff DB |
485 | static int |
486 | add_children(struct twl4030_platform_data *pdata, unsigned long features) | |
5725d66b DB |
487 | { |
488 | struct device *child; | |
dad759ff | 489 | struct device *usb_transceiver = NULL; |
a603a7fa | 490 | |
dad759ff | 491 | if (twl_has_bci() && pdata->bci && !(features & TPS_SUBSET)) { |
5725d66b DB |
492 | child = add_child(3, "twl4030_bci", |
493 | pdata->bci, sizeof(*pdata->bci), | |
494 | false, | |
495 | /* irq0 = CHG_PRES, irq1 = BCI */ | |
496 | pdata->irq_base + 8 + 1, pdata->irq_base + 2); | |
497 | if (IS_ERR(child)) | |
498 | return PTR_ERR(child); | |
499 | } | |
a603a7fa | 500 | |
5725d66b DB |
501 | if (twl_has_gpio() && pdata->gpio) { |
502 | child = add_child(1, "twl4030_gpio", | |
503 | pdata->gpio, sizeof(*pdata->gpio), | |
504 | false, pdata->irq_base + 0, 0); | |
505 | if (IS_ERR(child)) | |
506 | return PTR_ERR(child); | |
a603a7fa DB |
507 | } |
508 | ||
509 | if (twl_has_keypad() && pdata->keypad) { | |
5725d66b DB |
510 | child = add_child(2, "twl4030_keypad", |
511 | pdata->keypad, sizeof(*pdata->keypad), | |
512 | true, pdata->irq_base + 1, 0); | |
513 | if (IS_ERR(child)) | |
514 | return PTR_ERR(child); | |
a603a7fa DB |
515 | } |
516 | ||
517 | if (twl_has_madc() && pdata->madc) { | |
5725d66b DB |
518 | child = add_child(2, "twl4030_madc", |
519 | pdata->madc, sizeof(*pdata->madc), | |
520 | true, pdata->irq_base + 3, 0); | |
521 | if (IS_ERR(child)) | |
522 | return PTR_ERR(child); | |
a603a7fa DB |
523 | } |
524 | ||
525 | if (twl_has_rtc()) { | |
a603a7fa | 526 | /* |
5725d66b | 527 | * REVISIT platform_data here currently might expose the |
a603a7fa | 528 | * "msecure" line ... but for now we just expect board |
5725d66b | 529 | * setup to tell the chip "it's always ok to SET_TIME". |
a603a7fa DB |
530 | * Eventually, Linux might become more aware of such |
531 | * HW security concerns, and "least privilege". | |
532 | */ | |
5725d66b DB |
533 | child = add_child(3, "twl4030_rtc", |
534 | NULL, 0, | |
535 | true, pdata->irq_base + 8 + 3, 0); | |
536 | if (IS_ERR(child)) | |
537 | return PTR_ERR(child); | |
a603a7fa DB |
538 | } |
539 | ||
540 | if (twl_has_usb() && pdata->usb) { | |
5725d66b DB |
541 | child = add_child(0, "twl4030_usb", |
542 | pdata->usb, sizeof(*pdata->usb), | |
543 | true, | |
544 | /* irq0 = USB_PRES, irq1 = USB */ | |
545 | pdata->irq_base + 8 + 2, pdata->irq_base + 4); | |
546 | if (IS_ERR(child)) | |
547 | return PTR_ERR(child); | |
dad759ff DB |
548 | |
549 | /* we need to connect regulators to this transceiver */ | |
550 | usb_transceiver = child; | |
551 | } | |
552 | ||
80e45b1e TK |
553 | if (twl_has_watchdog()) { |
554 | child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); | |
555 | if (IS_ERR(child)) | |
9c3664dd FB |
556 | return PTR_ERR(child); |
557 | } | |
558 | ||
559 | if (twl_has_pwrbutton()) { | |
560 | child = add_child(1, "twl4030_pwrbutton", | |
561 | NULL, 0, true, pdata->irq_base + 8 + 0, 0); | |
562 | if (IS_ERR(child)) | |
80e45b1e TK |
563 | return PTR_ERR(child); |
564 | } | |
565 | ||
0b83ddeb PU |
566 | if (twl_has_codec() && pdata->codec) { |
567 | child = add_child(1, "twl4030_codec", | |
568 | pdata->codec, sizeof(*pdata->codec), | |
569 | false, 0, 0); | |
570 | if (IS_ERR(child)) | |
571 | return PTR_ERR(child); | |
572 | } | |
573 | ||
dad759ff DB |
574 | if (twl_has_regulator()) { |
575 | /* | |
576 | child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1); | |
577 | if (IS_ERR(child)) | |
578 | return PTR_ERR(child); | |
579 | */ | |
580 | ||
581 | child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1); | |
582 | if (IS_ERR(child)) | |
583 | return PTR_ERR(child); | |
584 | ||
585 | child = add_regulator(TWL4030_REG_VDAC, pdata->vdac); | |
586 | if (IS_ERR(child)) | |
587 | return PTR_ERR(child); | |
588 | ||
589 | child = add_regulator((features & TWL4030_VAUX2) | |
590 | ? TWL4030_REG_VAUX2_4030 | |
591 | : TWL4030_REG_VAUX2, | |
592 | pdata->vaux2); | |
593 | if (IS_ERR(child)) | |
594 | return PTR_ERR(child); | |
595 | } | |
596 | ||
597 | if (twl_has_regulator() && usb_transceiver) { | |
598 | static struct regulator_consumer_supply usb1v5 = { | |
599 | .supply = "usb1v5", | |
600 | }; | |
601 | static struct regulator_consumer_supply usb1v8 = { | |
602 | .supply = "usb1v8", | |
603 | }; | |
604 | static struct regulator_consumer_supply usb3v1 = { | |
605 | .supply = "usb3v1", | |
606 | }; | |
dad759ff DB |
607 | |
608 | /* this is a template that gets copied */ | |
609 | struct regulator_init_data usb_fixed = { | |
610 | .constraints.valid_modes_mask = | |
611 | REGULATOR_MODE_NORMAL | |
612 | | REGULATOR_MODE_STANDBY, | |
613 | .constraints.valid_ops_mask = | |
614 | REGULATOR_CHANGE_MODE | |
615 | | REGULATOR_CHANGE_STATUS, | |
616 | }; | |
617 | ||
618 | usb1v5.dev = usb_transceiver; | |
619 | usb1v8.dev = usb_transceiver; | |
620 | usb3v1.dev = usb_transceiver; | |
dad759ff DB |
621 | |
622 | child = add_regulator_linked(TWL4030_REG_VUSB1V5, &usb_fixed, | |
623 | &usb1v5, 1); | |
624 | if (IS_ERR(child)) | |
625 | return PTR_ERR(child); | |
626 | ||
627 | child = add_regulator_linked(TWL4030_REG_VUSB1V8, &usb_fixed, | |
628 | &usb1v8, 1); | |
629 | if (IS_ERR(child)) | |
630 | return PTR_ERR(child); | |
631 | ||
632 | child = add_regulator_linked(TWL4030_REG_VUSB3V1, &usb_fixed, | |
633 | &usb3v1, 1); | |
634 | if (IS_ERR(child)) | |
635 | return PTR_ERR(child); | |
dad759ff DB |
636 | } |
637 | ||
638 | /* maybe add LDOs that are omitted on cost-reduced parts */ | |
639 | if (twl_has_regulator() && !(features & TPS_SUBSET)) { | |
dad759ff DB |
640 | child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2); |
641 | if (IS_ERR(child)) | |
642 | return PTR_ERR(child); | |
dad759ff DB |
643 | |
644 | child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2); | |
645 | if (IS_ERR(child)) | |
646 | return PTR_ERR(child); | |
647 | ||
648 | child = add_regulator(TWL4030_REG_VSIM, pdata->vsim); | |
649 | if (IS_ERR(child)) | |
650 | return PTR_ERR(child); | |
651 | ||
652 | child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1); | |
653 | if (IS_ERR(child)) | |
654 | return PTR_ERR(child); | |
655 | ||
656 | child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3); | |
657 | if (IS_ERR(child)) | |
658 | return PTR_ERR(child); | |
659 | ||
660 | child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4); | |
661 | if (IS_ERR(child)) | |
662 | return PTR_ERR(child); | |
a603a7fa DB |
663 | } |
664 | ||
5725d66b | 665 | return 0; |
a603a7fa DB |
666 | } |
667 | ||
668 | /*----------------------------------------------------------------------*/ | |
669 | ||
670 | /* | |
671 | * These three functions initialize the on-chip clock framework, | |
672 | * letting it generate the right frequencies for USB, MADC, and | |
673 | * other purposes. | |
674 | */ | |
675 | static inline int __init protect_pm_master(void) | |
676 | { | |
677 | int e = 0; | |
678 | ||
679 | e = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_LOCK, | |
680 | R_PROTECT_KEY); | |
681 | return e; | |
682 | } | |
683 | ||
684 | static inline int __init unprotect_pm_master(void) | |
685 | { | |
686 | int e = 0; | |
687 | ||
688 | e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_UNLOCK1, | |
689 | R_PROTECT_KEY); | |
690 | e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_UNLOCK2, | |
691 | R_PROTECT_KEY); | |
692 | return e; | |
693 | } | |
694 | ||
04ffa131 | 695 | static void clocks_init(struct device *dev) |
a603a7fa DB |
696 | { |
697 | int e = 0; | |
698 | struct clk *osc; | |
699 | u32 rate; | |
700 | u8 ctrl = HFCLK_FREQ_26_MHZ; | |
701 | ||
702 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) | |
703 | if (cpu_is_omap2430()) | |
e6b50c8d | 704 | osc = clk_get(dev, "osc_ck"); |
a603a7fa | 705 | else |
e6b50c8d | 706 | osc = clk_get(dev, "osc_sys_ck"); |
6354ab5c | 707 | |
a603a7fa DB |
708 | if (IS_ERR(osc)) { |
709 | printk(KERN_WARNING "Skipping twl4030 internal clock init and " | |
710 | "using bootloader value (unknown osc rate)\n"); | |
711 | return; | |
712 | } | |
713 | ||
714 | rate = clk_get_rate(osc); | |
715 | clk_put(osc); | |
716 | ||
6354ab5c SO |
717 | #else |
718 | /* REVISIT for non-OMAP systems, pass the clock rate from | |
719 | * board init code, using platform_data. | |
720 | */ | |
721 | osc = ERR_PTR(-EIO); | |
722 | ||
723 | printk(KERN_WARNING "Skipping twl4030 internal clock init and " | |
724 | "using bootloader value (unknown osc rate)\n"); | |
725 | ||
726 | return; | |
727 | #endif | |
728 | ||
a603a7fa DB |
729 | switch (rate) { |
730 | case 19200000: | |
731 | ctrl = HFCLK_FREQ_19p2_MHZ; | |
732 | break; | |
733 | case 26000000: | |
734 | ctrl = HFCLK_FREQ_26_MHZ; | |
735 | break; | |
736 | case 38400000: | |
737 | ctrl = HFCLK_FREQ_38p4_MHZ; | |
738 | break; | |
739 | } | |
740 | ||
741 | ctrl |= HIGH_PERF_SQ; | |
742 | e |= unprotect_pm_master(); | |
743 | /* effect->MADC+USB ck en */ | |
744 | e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); | |
745 | e |= protect_pm_master(); | |
746 | ||
747 | if (e < 0) | |
748 | pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); | |
749 | } | |
750 | ||
751 | /*----------------------------------------------------------------------*/ | |
752 | ||
a30d46c0 DB |
753 | int twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); |
754 | int twl_exit_irq(void); | |
a603a7fa DB |
755 | |
756 | static int twl4030_remove(struct i2c_client *client) | |
757 | { | |
758 | unsigned i; | |
a30d46c0 | 759 | int status; |
a603a7fa | 760 | |
a30d46c0 DB |
761 | status = twl_exit_irq(); |
762 | if (status < 0) | |
763 | return status; | |
a603a7fa DB |
764 | |
765 | for (i = 0; i < TWL4030_NUM_SLAVES; i++) { | |
766 | struct twl4030_client *twl = &twl4030_modules[i]; | |
767 | ||
768 | if (twl->client && twl->client != client) | |
769 | i2c_unregister_device(twl->client); | |
770 | twl4030_modules[i].client = NULL; | |
771 | } | |
772 | inuse = false; | |
773 | return 0; | |
774 | } | |
775 | ||
776 | /* NOTE: this driver only handles a single twl4030/tps659x0 chip */ | |
777 | static int | |
778 | twl4030_probe(struct i2c_client *client, const struct i2c_device_id *id) | |
779 | { | |
780 | int status; | |
781 | unsigned i; | |
782 | struct twl4030_platform_data *pdata = client->dev.platform_data; | |
783 | ||
784 | if (!pdata) { | |
785 | dev_dbg(&client->dev, "no platform data?\n"); | |
786 | return -EINVAL; | |
787 | } | |
788 | ||
789 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { | |
790 | dev_dbg(&client->dev, "can't talk I2C?\n"); | |
791 | return -EIO; | |
792 | } | |
793 | ||
a30d46c0 | 794 | if (inuse) { |
a603a7fa DB |
795 | dev_dbg(&client->dev, "driver is already in use\n"); |
796 | return -EBUSY; | |
797 | } | |
798 | ||
799 | for (i = 0; i < TWL4030_NUM_SLAVES; i++) { | |
800 | struct twl4030_client *twl = &twl4030_modules[i]; | |
801 | ||
802 | twl->address = client->addr + i; | |
803 | if (i == 0) | |
804 | twl->client = client; | |
805 | else { | |
806 | twl->client = i2c_new_dummy(client->adapter, | |
807 | twl->address); | |
808 | if (!twl->client) { | |
809 | dev_err(&twl->client->dev, | |
810 | "can't attach client %d\n", i); | |
811 | status = -ENOMEM; | |
812 | goto fail; | |
813 | } | |
814 | strlcpy(twl->client->name, id->name, | |
815 | sizeof(twl->client->name)); | |
816 | } | |
817 | mutex_init(&twl->xfer_lock); | |
818 | } | |
819 | inuse = true; | |
820 | ||
821 | /* setup clock framework */ | |
e6b50c8d | 822 | clocks_init(&client->dev); |
a603a7fa | 823 | |
ebf0bd36 AK |
824 | /* load power event scripts */ |
825 | if (twl_has_power() && pdata->power) | |
826 | twl4030_power_init(pdata->power); | |
827 | ||
a603a7fa DB |
828 | /* Maybe init the T2 Interrupt subsystem */ |
829 | if (client->irq | |
830 | && pdata->irq_base | |
831 | && pdata->irq_end > pdata->irq_base) { | |
a30d46c0 DB |
832 | status = twl_init_irq(client->irq, pdata->irq_base, pdata->irq_end); |
833 | if (status < 0) | |
834 | goto fail; | |
a603a7fa DB |
835 | } |
836 | ||
dad759ff | 837 | status = add_children(pdata, id->driver_data); |
a603a7fa DB |
838 | fail: |
839 | if (status < 0) | |
840 | twl4030_remove(client); | |
841 | return status; | |
842 | } | |
843 | ||
844 | static const struct i2c_device_id twl4030_ids[] = { | |
dad759ff DB |
845 | { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ |
846 | { "twl5030", 0 }, /* T2 updated */ | |
847 | { "tps65950", 0 }, /* catalog version of twl5030 */ | |
848 | { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ | |
849 | { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ | |
a603a7fa DB |
850 | { /* end of list */ }, |
851 | }; | |
852 | MODULE_DEVICE_TABLE(i2c, twl4030_ids); | |
853 | ||
854 | /* One Client Driver , 4 Clients */ | |
855 | static struct i2c_driver twl4030_driver = { | |
856 | .driver.name = DRIVER_NAME, | |
857 | .id_table = twl4030_ids, | |
858 | .probe = twl4030_probe, | |
859 | .remove = twl4030_remove, | |
860 | }; | |
861 | ||
862 | static int __init twl4030_init(void) | |
863 | { | |
864 | return i2c_add_driver(&twl4030_driver); | |
865 | } | |
866 | subsys_initcall(twl4030_init); | |
867 | ||
868 | static void __exit twl4030_exit(void) | |
869 | { | |
870 | i2c_del_driver(&twl4030_driver); | |
871 | } | |
872 | module_exit(twl4030_exit); | |
873 | ||
874 | MODULE_AUTHOR("Texas Instruments, Inc."); | |
875 | MODULE_DESCRIPTION("I2C Core interface for TWL4030"); | |
876 | MODULE_LICENSE("GPL"); |