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