Commit | Line | Data |
---|---|---|
a603a7fa | 1 | /* |
fc7b92fc B |
2 | * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM |
3 | * and audio CODEC devices | |
a603a7fa DB |
4 | * |
5 | * Copyright (C) 2005-2006 Texas Instruments, Inc. | |
6 | * | |
7 | * Modifications to defer interrupt handling to a kernel thread: | |
8 | * Copyright (C) 2006 MontaVista Software, Inc. | |
9 | * | |
10 | * Based on tlv320aic23.c: | |
11 | * Copyright (c) by Kai Svahn <kai.svahn@nokia.com> | |
12 | * | |
13 | * Code cleanup and modifications to IRQ handler. | |
14 | * by syed khasim <x0khasim@ti.com> | |
15 | * | |
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. | |
20 | * | |
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. | |
25 | * | |
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 | |
29 | */ | |
30 | ||
a603a7fa DB |
31 | #include <linux/init.h> |
32 | #include <linux/mutex.h> | |
a603a7fa DB |
33 | #include <linux/platform_device.h> |
34 | #include <linux/clk.h> | |
a30d46c0 | 35 | #include <linux/err.h> |
a603a7fa | 36 | |
dad759ff DB |
37 | #include <linux/regulator/machine.h> |
38 | ||
a603a7fa | 39 | #include <linux/i2c.h> |
b07682b6 | 40 | #include <linux/i2c/twl.h> |
a603a7fa | 41 | |
a313d758 | 42 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) |
ce491cf8 | 43 | #include <plat/cpu.h> |
b29c06ae | 44 | #endif |
a603a7fa DB |
45 | |
46 | /* | |
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. | |
51 | * | |
52 | * This driver core provides genirq support for the interrupts emitted, | |
53 | * by the various modules, and exports register access primitives. | |
54 | * | |
55 | * FIXME this driver currently requires use of the first interrupt line | |
56 | * (and associated registers). | |
57 | */ | |
58 | ||
fc7b92fc | 59 | #define DRIVER_NAME "twl" |
a603a7fa DB |
60 | |
61 | #if defined(CONFIG_TWL4030_BCI_BATTERY) || \ | |
62 | defined(CONFIG_TWL4030_BCI_BATTERY_MODULE) | |
63 | #define twl_has_bci() true | |
64 | #else | |
65 | #define twl_has_bci() false | |
66 | #endif | |
67 | ||
68 | #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE) | |
69 | #define twl_has_keypad() true | |
70 | #else | |
71 | #define twl_has_keypad() false | |
72 | #endif | |
73 | ||
74 | #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE) | |
75 | #define twl_has_gpio() true | |
76 | #else | |
77 | #define twl_has_gpio() false | |
78 | #endif | |
79 | ||
dad759ff DB |
80 | #if defined(CONFIG_REGULATOR_TWL4030) \ |
81 | || defined(CONFIG_REGULATOR_TWL4030_MODULE) | |
82 | #define twl_has_regulator() true | |
83 | #else | |
84 | #define twl_has_regulator() false | |
85 | #endif | |
86 | ||
a603a7fa DB |
87 | #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE) |
88 | #define twl_has_madc() true | |
89 | #else | |
90 | #define twl_has_madc() false | |
91 | #endif | |
92 | ||
ebf0bd36 AK |
93 | #ifdef CONFIG_TWL4030_POWER |
94 | #define twl_has_power() true | |
95 | #else | |
96 | #define twl_has_power() false | |
97 | #endif | |
98 | ||
a603a7fa DB |
99 | #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE) |
100 | #define twl_has_rtc() true | |
101 | #else | |
102 | #define twl_has_rtc() false | |
103 | #endif | |
104 | ||
105 | #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) | |
106 | #define twl_has_usb() true | |
107 | #else | |
108 | #define twl_has_usb() false | |
109 | #endif | |
110 | ||
80e45b1e TK |
111 | #if defined(CONFIG_TWL4030_WATCHDOG) || \ |
112 | defined(CONFIG_TWL4030_WATCHDOG_MODULE) | |
113 | #define twl_has_watchdog() true | |
114 | #else | |
115 | #define twl_has_watchdog() false | |
116 | #endif | |
a603a7fa | 117 | |
0b83ddeb PU |
118 | #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) |
119 | #define twl_has_codec() true | |
120 | #else | |
121 | #define twl_has_codec() false | |
122 | #endif | |
123 | ||
a603a7fa DB |
124 | /* Triton Core internal information (BEGIN) */ |
125 | ||
126 | /* Last - for index max*/ | |
127 | #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG | |
128 | ||
fc7b92fc | 129 | #define TWL_NUM_SLAVES 4 |
a603a7fa | 130 | |
9c3664dd FB |
131 | #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \ |
132 | || defined(CONFIG_INPUT_TWL4030_PWBUTTON_MODULE) | |
133 | #define twl_has_pwrbutton() true | |
134 | #else | |
135 | #define twl_has_pwrbutton() false | |
136 | #endif | |
a603a7fa | 137 | |
fc7b92fc B |
138 | #define SUB_CHIP_ID0 0 |
139 | #define SUB_CHIP_ID1 1 | |
140 | #define SUB_CHIP_ID2 2 | |
141 | #define SUB_CHIP_ID3 3 | |
142 | ||
143 | #define TWL_MODULE_LAST TWL4030_MODULE_LAST | |
144 | ||
a603a7fa DB |
145 | /* Base Address defns for twl4030_map[] */ |
146 | ||
147 | /* subchip/slave 0 - USB ID */ | |
148 | #define TWL4030_BASEADD_USB 0x0000 | |
149 | ||
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 | |
156 | ||
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 | |
168 | ||
1920a61e IK |
169 | #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ |
170 | #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's | |
171 | one */ | |
172 | ||
a603a7fa DB |
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 | |
180 | ||
181 | /* Triton Core internal information (END) */ | |
182 | ||
183 | ||
184 | /* Few power values */ | |
185 | #define R_CFG_BOOT 0x05 | |
186 | #define R_PROTECT_KEY 0x0E | |
187 | ||
188 | /* access control values for R_PROTECT_KEY */ | |
189 | #define KEY_UNLOCK1 0xce | |
190 | #define KEY_UNLOCK2 0xec | |
191 | #define KEY_LOCK 0x00 | |
192 | ||
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) | |
38a68496 | 198 | #define CK32K_LOWPWR_EN (1 << 7) |
a603a7fa DB |
199 | |
200 | ||
dad759ff DB |
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 */ | |
1920a61e | 204 | #define TWL5031 BIT(2) /* twl5031 has different registers */ |
dad759ff | 205 | |
a603a7fa DB |
206 | /*----------------------------------------------------------------------*/ |
207 | ||
a603a7fa DB |
208 | /* is driver active, bound to a chip? */ |
209 | static bool inuse; | |
210 | ||
211 | /* Structure for each TWL4030 Slave */ | |
fc7b92fc | 212 | struct twl_client { |
a603a7fa DB |
213 | struct i2c_client *client; |
214 | u8 address; | |
215 | ||
216 | /* max numb of i2c_msg required is for read =2 */ | |
217 | struct i2c_msg xfer_msg[2]; | |
218 | ||
219 | /* To lock access to xfer_msg */ | |
220 | struct mutex xfer_lock; | |
221 | }; | |
222 | ||
fc7b92fc | 223 | static struct twl_client twl_modules[TWL_NUM_SLAVES]; |
a603a7fa DB |
224 | |
225 | ||
226 | /* mapping the module id to slave id and base address */ | |
fc7b92fc | 227 | struct twl_mapping { |
a603a7fa DB |
228 | unsigned char sid; /* Slave ID */ |
229 | unsigned char base; /* base address */ | |
230 | }; | |
231 | ||
fc7b92fc | 232 | static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { |
a603a7fa DB |
233 | /* |
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. | |
237 | */ | |
238 | ||
239 | { 0, TWL4030_BASEADD_USB }, | |
240 | ||
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 }, | |
246 | ||
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 }, | |
1920a61e IK |
257 | { 2, TWL5031_BASEADD_ACCESSORY }, |
258 | { 2, TWL5031_BASEADD_INTERRUPTS }, | |
a603a7fa DB |
259 | |
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 }, | |
266 | }; | |
267 | ||
268 | /*----------------------------------------------------------------------*/ | |
269 | ||
a603a7fa DB |
270 | /* Exported Functions */ |
271 | ||
272 | /** | |
fc7b92fc | 273 | * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
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 | |
278 | * | |
279 | * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and | |
280 | * valid data starts at Offset 1. | |
281 | * | |
282 | * Returns the result of operation - 0 is success | |
283 | */ | |
fc7b92fc | 284 | int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
285 | { |
286 | int ret; | |
287 | int sid; | |
fc7b92fc | 288 | struct twl_client *twl; |
a603a7fa DB |
289 | struct i2c_msg *msg; |
290 | ||
fc7b92fc | 291 | if (unlikely(mod_no > TWL_MODULE_LAST)) { |
a603a7fa DB |
292 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
293 | return -EPERM; | |
294 | } | |
295 | sid = twl4030_map[mod_no].sid; | |
fc7b92fc | 296 | twl = &twl_modules[sid]; |
a603a7fa DB |
297 | |
298 | if (unlikely(!inuse)) { | |
299 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
300 | return -EPERM; | |
301 | } | |
302 | mutex_lock(&twl->xfer_lock); | |
303 | /* | |
304 | * [MSG1]: fill the register address data | |
305 | * fill the data Tx buffer | |
306 | */ | |
307 | msg = &twl->xfer_msg[0]; | |
308 | msg->addr = twl->address; | |
309 | msg->len = num_bytes + 1; | |
310 | msg->flags = 0; | |
311 | msg->buf = value; | |
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); | |
316 | ||
147e0847 AK |
317 | /* i2c_transfer returns number of messages transferred */ |
318 | if (ret != 1) { | |
319 | pr_err("%s: i2c_write failed to transfer all messages\n", | |
320 | DRIVER_NAME); | |
321 | if (ret < 0) | |
322 | return ret; | |
323 | else | |
324 | return -EIO; | |
325 | } else { | |
326 | return 0; | |
327 | } | |
a603a7fa | 328 | } |
fc7b92fc | 329 | EXPORT_SYMBOL(twl_i2c_write); |
a603a7fa DB |
330 | |
331 | /** | |
fc7b92fc | 332 | * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
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 | |
337 | * | |
338 | * Returns result of operation - num_bytes is success else failure. | |
339 | */ | |
fc7b92fc | 340 | int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
341 | { |
342 | int ret; | |
343 | u8 val; | |
344 | int sid; | |
fc7b92fc | 345 | struct twl_client *twl; |
a603a7fa DB |
346 | struct i2c_msg *msg; |
347 | ||
fc7b92fc | 348 | if (unlikely(mod_no > TWL_MODULE_LAST)) { |
a603a7fa DB |
349 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
350 | return -EPERM; | |
351 | } | |
352 | sid = twl4030_map[mod_no].sid; | |
fc7b92fc | 353 | twl = &twl_modules[sid]; |
a603a7fa DB |
354 | |
355 | if (unlikely(!inuse)) { | |
356 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
357 | return -EPERM; | |
358 | } | |
359 | mutex_lock(&twl->xfer_lock); | |
360 | /* [MSG1] fill the register address data */ | |
361 | msg = &twl->xfer_msg[0]; | |
362 | msg->addr = twl->address; | |
363 | msg->len = 1; | |
364 | msg->flags = 0; /* Read the register value */ | |
365 | val = twl4030_map[mod_no].base + reg; | |
366 | msg->buf = &val; | |
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 */ | |
372 | msg->buf = value; | |
373 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); | |
374 | mutex_unlock(&twl->xfer_lock); | |
375 | ||
147e0847 AK |
376 | /* i2c_transfer returns number of messages transferred */ |
377 | if (ret != 2) { | |
378 | pr_err("%s: i2c_read failed to transfer all messages\n", | |
379 | DRIVER_NAME); | |
380 | if (ret < 0) | |
381 | return ret; | |
382 | else | |
383 | return -EIO; | |
384 | } else { | |
385 | return 0; | |
386 | } | |
a603a7fa | 387 | } |
fc7b92fc | 388 | EXPORT_SYMBOL(twl_i2c_read); |
a603a7fa DB |
389 | |
390 | /** | |
fc7b92fc | 391 | * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
392 | * @mod_no: module number |
393 | * @value: the value to be written 8 bit | |
394 | * @reg: register address (just offset will do) | |
395 | * | |
396 | * Returns result of operation - 0 is success | |
397 | */ | |
fc7b92fc | 398 | int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg) |
a603a7fa DB |
399 | { |
400 | ||
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; | |
fc7b92fc | 405 | return twl_i2c_write(mod_no, temp_buffer, reg, 1); |
a603a7fa | 406 | } |
fc7b92fc | 407 | EXPORT_SYMBOL(twl_i2c_write_u8); |
a603a7fa DB |
408 | |
409 | /** | |
fc7b92fc | 410 | * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
411 | * @mod_no: module number |
412 | * @value: the value read 8 bit | |
413 | * @reg: register address (just offset will do) | |
414 | * | |
415 | * Returns result of operation - 0 is success | |
416 | */ | |
fc7b92fc | 417 | int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) |
a603a7fa | 418 | { |
fc7b92fc | 419 | return twl_i2c_read(mod_no, value, reg, 1); |
a603a7fa | 420 | } |
fc7b92fc | 421 | EXPORT_SYMBOL(twl_i2c_read_u8); |
a603a7fa DB |
422 | |
423 | /*----------------------------------------------------------------------*/ | |
424 | ||
dad759ff DB |
425 | static struct device * |
426 | add_numbered_child(unsigned chip, const char *name, int num, | |
5725d66b DB |
427 | void *pdata, unsigned pdata_len, |
428 | bool can_wakeup, int irq0, int irq1) | |
a603a7fa | 429 | { |
5725d66b | 430 | struct platform_device *pdev; |
fc7b92fc | 431 | struct twl_client *twl = &twl_modules[chip]; |
5725d66b DB |
432 | int status; |
433 | ||
dad759ff | 434 | pdev = platform_device_alloc(name, num); |
5725d66b DB |
435 | if (!pdev) { |
436 | dev_dbg(&twl->client->dev, "can't alloc dev\n"); | |
437 | status = -ENOMEM; | |
438 | goto err; | |
439 | } | |
a603a7fa | 440 | |
5725d66b DB |
441 | device_init_wakeup(&pdev->dev, can_wakeup); |
442 | pdev->dev.parent = &twl->client->dev; | |
a603a7fa | 443 | |
5725d66b DB |
444 | if (pdata) { |
445 | status = platform_device_add_data(pdev, pdata, pdata_len); | |
446 | if (status < 0) { | |
447 | dev_dbg(&pdev->dev, "can't add platform_data\n"); | |
a603a7fa DB |
448 | goto err; |
449 | } | |
5725d66b | 450 | } |
a603a7fa | 451 | |
5725d66b DB |
452 | if (irq0) { |
453 | struct resource r[2] = { | |
454 | { .start = irq0, .flags = IORESOURCE_IRQ, }, | |
455 | { .start = irq1, .flags = IORESOURCE_IRQ, }, | |
456 | }; | |
a603a7fa | 457 | |
5725d66b | 458 | status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); |
a603a7fa | 459 | if (status < 0) { |
5725d66b | 460 | dev_dbg(&pdev->dev, "can't add irqs\n"); |
a603a7fa DB |
461 | goto err; |
462 | } | |
463 | } | |
464 | ||
5725d66b | 465 | status = platform_device_add(pdev); |
a603a7fa | 466 | |
5725d66b DB |
467 | err: |
468 | if (status < 0) { | |
469 | platform_device_put(pdev); | |
470 | dev_err(&twl->client->dev, "can't add %s dev\n", name); | |
471 | return ERR_PTR(status); | |
472 | } | |
473 | return &pdev->dev; | |
474 | } | |
a603a7fa | 475 | |
dad759ff DB |
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) | |
479 | { | |
480 | return add_numbered_child(chip, name, -1, pdata, pdata_len, | |
481 | can_wakeup, irq0, irq1); | |
482 | } | |
483 | ||
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) | |
488 | { | |
489 | /* regulator framework demands init_data ... */ | |
490 | if (!pdata) | |
491 | return NULL; | |
492 | ||
b73eac78 | 493 | if (consumers) { |
dad759ff DB |
494 | pdata->consumer_supplies = consumers; |
495 | pdata->num_consumer_supplies = num_consumers; | |
496 | } | |
497 | ||
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); | |
501 | } | |
502 | ||
503 | static struct device * | |
504 | add_regulator(int num, struct regulator_init_data *pdata) | |
505 | { | |
506 | return add_regulator_linked(num, pdata, NULL, 0); | |
507 | } | |
508 | ||
5725d66b DB |
509 | /* |
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. | |
513 | */ | |
a603a7fa | 514 | |
dad759ff DB |
515 | static int |
516 | add_children(struct twl4030_platform_data *pdata, unsigned long features) | |
5725d66b DB |
517 | { |
518 | struct device *child; | |
a603a7fa | 519 | |
1920a61e IK |
520 | if (twl_has_bci() && pdata->bci && |
521 | !(features & (TPS_SUBSET | TWL5031))) { | |
5725d66b DB |
522 | child = add_child(3, "twl4030_bci", |
523 | pdata->bci, sizeof(*pdata->bci), | |
524 | false, | |
525 | /* irq0 = CHG_PRES, irq1 = BCI */ | |
fc7b92fc B |
526 | pdata->irq_base + BCI_PRES_INTR_OFFSET, |
527 | pdata->irq_base + BCI_INTR_OFFSET); | |
5725d66b DB |
528 | if (IS_ERR(child)) |
529 | return PTR_ERR(child); | |
530 | } | |
a603a7fa | 531 | |
5725d66b | 532 | if (twl_has_gpio() && pdata->gpio) { |
fc7b92fc | 533 | child = add_child(SUB_CHIP_ID1, "twl4030_gpio", |
5725d66b | 534 | pdata->gpio, sizeof(*pdata->gpio), |
fc7b92fc | 535 | false, pdata->irq_base + GPIO_INTR_OFFSET, 0); |
5725d66b DB |
536 | if (IS_ERR(child)) |
537 | return PTR_ERR(child); | |
a603a7fa DB |
538 | } |
539 | ||
540 | if (twl_has_keypad() && pdata->keypad) { | |
fc7b92fc | 541 | child = add_child(SUB_CHIP_ID2, "twl4030_keypad", |
5725d66b | 542 | pdata->keypad, sizeof(*pdata->keypad), |
fc7b92fc | 543 | true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0); |
5725d66b DB |
544 | if (IS_ERR(child)) |
545 | return PTR_ERR(child); | |
a603a7fa DB |
546 | } |
547 | ||
548 | if (twl_has_madc() && pdata->madc) { | |
5725d66b DB |
549 | child = add_child(2, "twl4030_madc", |
550 | pdata->madc, sizeof(*pdata->madc), | |
fc7b92fc | 551 | true, pdata->irq_base + MADC_INTR_OFFSET, 0); |
5725d66b DB |
552 | if (IS_ERR(child)) |
553 | return PTR_ERR(child); | |
a603a7fa DB |
554 | } |
555 | ||
556 | if (twl_has_rtc()) { | |
a603a7fa | 557 | /* |
5725d66b | 558 | * REVISIT platform_data here currently might expose the |
a603a7fa | 559 | * "msecure" line ... but for now we just expect board |
5725d66b | 560 | * setup to tell the chip "it's always ok to SET_TIME". |
a603a7fa DB |
561 | * Eventually, Linux might become more aware of such |
562 | * HW security concerns, and "least privilege". | |
563 | */ | |
5725d66b DB |
564 | child = add_child(3, "twl4030_rtc", |
565 | NULL, 0, | |
fc7b92fc | 566 | true, pdata->irq_base + RTC_INTR_OFFSET, 0); |
5725d66b DB |
567 | if (IS_ERR(child)) |
568 | return PTR_ERR(child); | |
a603a7fa DB |
569 | } |
570 | ||
571 | if (twl_has_usb() && pdata->usb) { | |
f8ebdff0 RQ |
572 | |
573 | static struct regulator_consumer_supply usb1v5 = { | |
574 | .supply = "usb1v5", | |
575 | }; | |
576 | static struct regulator_consumer_supply usb1v8 = { | |
577 | .supply = "usb1v8", | |
578 | }; | |
579 | static struct regulator_consumer_supply usb3v1 = { | |
580 | .supply = "usb3v1", | |
581 | }; | |
582 | ||
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, | |
593 | }; | |
594 | ||
595 | child = add_regulator_linked(TWL4030_REG_VUSB1V5, | |
596 | &usb_fixed, &usb1v5, 1); | |
597 | if (IS_ERR(child)) | |
598 | return PTR_ERR(child); | |
599 | ||
600 | child = add_regulator_linked(TWL4030_REG_VUSB1V8, | |
601 | &usb_fixed, &usb1v8, 1); | |
602 | if (IS_ERR(child)) | |
603 | return PTR_ERR(child); | |
604 | ||
605 | child = add_regulator_linked(TWL4030_REG_VUSB3V1, | |
606 | &usb_fixed, &usb3v1, 1); | |
607 | if (IS_ERR(child)) | |
608 | return PTR_ERR(child); | |
609 | ||
610 | } | |
611 | ||
5725d66b DB |
612 | child = add_child(0, "twl4030_usb", |
613 | pdata->usb, sizeof(*pdata->usb), | |
614 | true, | |
615 | /* irq0 = USB_PRES, irq1 = USB */ | |
fc7b92fc B |
616 | pdata->irq_base + USB_PRES_INTR_OFFSET, |
617 | pdata->irq_base + USB_INTR_OFFSET); | |
f8ebdff0 | 618 | |
5725d66b DB |
619 | if (IS_ERR(child)) |
620 | return PTR_ERR(child); | |
dad759ff DB |
621 | |
622 | /* we need to connect regulators to this transceiver */ | |
f8ebdff0 RQ |
623 | if (twl_has_regulator() && child) { |
624 | usb1v5.dev = child; | |
625 | usb1v8.dev = child; | |
626 | usb3v1.dev = child; | |
627 | } | |
dad759ff DB |
628 | } |
629 | ||
80e45b1e TK |
630 | if (twl_has_watchdog()) { |
631 | child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); | |
632 | if (IS_ERR(child)) | |
9c3664dd FB |
633 | return PTR_ERR(child); |
634 | } | |
635 | ||
636 | if (twl_has_pwrbutton()) { | |
637 | child = add_child(1, "twl4030_pwrbutton", | |
638 | NULL, 0, true, pdata->irq_base + 8 + 0, 0); | |
639 | if (IS_ERR(child)) | |
80e45b1e TK |
640 | return PTR_ERR(child); |
641 | } | |
642 | ||
0b83ddeb PU |
643 | if (twl_has_codec() && pdata->codec) { |
644 | child = add_child(1, "twl4030_codec", | |
645 | pdata->codec, sizeof(*pdata->codec), | |
646 | false, 0, 0); | |
647 | if (IS_ERR(child)) | |
648 | return PTR_ERR(child); | |
649 | } | |
650 | ||
dad759ff | 651 | if (twl_has_regulator()) { |
dad759ff DB |
652 | child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1); |
653 | if (IS_ERR(child)) | |
654 | return PTR_ERR(child); | |
ab4abe05 JKS |
655 | |
656 | child = add_regulator(TWL4030_REG_VIO, pdata->vio); | |
657 | if (IS_ERR(child)) | |
658 | return PTR_ERR(child); | |
659 | ||
660 | child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1); | |
661 | if (IS_ERR(child)) | |
662 | return PTR_ERR(child); | |
663 | ||
664 | child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2); | |
665 | if (IS_ERR(child)) | |
666 | return PTR_ERR(child); | |
dad759ff DB |
667 | |
668 | child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1); | |
669 | if (IS_ERR(child)) | |
670 | return PTR_ERR(child); | |
671 | ||
672 | child = add_regulator(TWL4030_REG_VDAC, pdata->vdac); | |
673 | if (IS_ERR(child)) | |
674 | return PTR_ERR(child); | |
675 | ||
676 | child = add_regulator((features & TWL4030_VAUX2) | |
677 | ? TWL4030_REG_VAUX2_4030 | |
678 | : TWL4030_REG_VAUX2, | |
679 | pdata->vaux2); | |
680 | if (IS_ERR(child)) | |
681 | return PTR_ERR(child); | |
ab4abe05 JKS |
682 | |
683 | child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1); | |
684 | if (IS_ERR(child)) | |
685 | return PTR_ERR(child); | |
686 | ||
687 | child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2); | |
688 | if (IS_ERR(child)) | |
689 | return PTR_ERR(child); | |
690 | ||
691 | child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig); | |
692 | if (IS_ERR(child)) | |
693 | return PTR_ERR(child); | |
dad759ff DB |
694 | } |
695 | ||
dad759ff DB |
696 | /* maybe add LDOs that are omitted on cost-reduced parts */ |
697 | if (twl_has_regulator() && !(features & TPS_SUBSET)) { | |
dad759ff DB |
698 | child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2); |
699 | if (IS_ERR(child)) | |
700 | return PTR_ERR(child); | |
dad759ff DB |
701 | |
702 | child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2); | |
703 | if (IS_ERR(child)) | |
704 | return PTR_ERR(child); | |
705 | ||
706 | child = add_regulator(TWL4030_REG_VSIM, pdata->vsim); | |
707 | if (IS_ERR(child)) | |
708 | return PTR_ERR(child); | |
709 | ||
710 | child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1); | |
711 | if (IS_ERR(child)) | |
712 | return PTR_ERR(child); | |
713 | ||
714 | child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3); | |
715 | if (IS_ERR(child)) | |
716 | return PTR_ERR(child); | |
717 | ||
718 | child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4); | |
719 | if (IS_ERR(child)) | |
720 | return PTR_ERR(child); | |
a603a7fa DB |
721 | } |
722 | ||
5725d66b | 723 | return 0; |
a603a7fa DB |
724 | } |
725 | ||
726 | /*----------------------------------------------------------------------*/ | |
727 | ||
728 | /* | |
729 | * These three functions initialize the on-chip clock framework, | |
730 | * letting it generate the right frequencies for USB, MADC, and | |
731 | * other purposes. | |
732 | */ | |
733 | static inline int __init protect_pm_master(void) | |
734 | { | |
735 | int e = 0; | |
736 | ||
fc7b92fc | 737 | e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_LOCK, |
a603a7fa DB |
738 | R_PROTECT_KEY); |
739 | return e; | |
740 | } | |
741 | ||
742 | static inline int __init unprotect_pm_master(void) | |
743 | { | |
744 | int e = 0; | |
745 | ||
fc7b92fc | 746 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK1, |
a603a7fa | 747 | R_PROTECT_KEY); |
fc7b92fc | 748 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK2, |
a603a7fa DB |
749 | R_PROTECT_KEY); |
750 | return e; | |
751 | } | |
752 | ||
38a68496 IK |
753 | static void clocks_init(struct device *dev, |
754 | struct twl4030_clock_init_data *clock) | |
a603a7fa DB |
755 | { |
756 | int e = 0; | |
757 | struct clk *osc; | |
758 | u32 rate; | |
759 | u8 ctrl = HFCLK_FREQ_26_MHZ; | |
760 | ||
761 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) | |
762 | if (cpu_is_omap2430()) | |
e6b50c8d | 763 | osc = clk_get(dev, "osc_ck"); |
a603a7fa | 764 | else |
e6b50c8d | 765 | osc = clk_get(dev, "osc_sys_ck"); |
6354ab5c | 766 | |
a603a7fa | 767 | if (IS_ERR(osc)) { |
fc7b92fc | 768 | printk(KERN_WARNING "Skipping twl internal clock init and " |
a603a7fa DB |
769 | "using bootloader value (unknown osc rate)\n"); |
770 | return; | |
771 | } | |
772 | ||
773 | rate = clk_get_rate(osc); | |
774 | clk_put(osc); | |
775 | ||
6354ab5c SO |
776 | #else |
777 | /* REVISIT for non-OMAP systems, pass the clock rate from | |
778 | * board init code, using platform_data. | |
779 | */ | |
780 | osc = ERR_PTR(-EIO); | |
781 | ||
fc7b92fc | 782 | printk(KERN_WARNING "Skipping twl internal clock init and " |
6354ab5c SO |
783 | "using bootloader value (unknown osc rate)\n"); |
784 | ||
785 | return; | |
786 | #endif | |
787 | ||
a603a7fa DB |
788 | switch (rate) { |
789 | case 19200000: | |
790 | ctrl = HFCLK_FREQ_19p2_MHZ; | |
791 | break; | |
792 | case 26000000: | |
793 | ctrl = HFCLK_FREQ_26_MHZ; | |
794 | break; | |
795 | case 38400000: | |
796 | ctrl = HFCLK_FREQ_38p4_MHZ; | |
797 | break; | |
798 | } | |
799 | ||
800 | ctrl |= HIGH_PERF_SQ; | |
38a68496 IK |
801 | if (clock && clock->ck32k_lowpwr_enable) |
802 | ctrl |= CK32K_LOWPWR_EN; | |
803 | ||
a603a7fa DB |
804 | e |= unprotect_pm_master(); |
805 | /* effect->MADC+USB ck en */ | |
fc7b92fc | 806 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); |
a603a7fa DB |
807 | e |= protect_pm_master(); |
808 | ||
809 | if (e < 0) | |
810 | pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); | |
811 | } | |
812 | ||
813 | /*----------------------------------------------------------------------*/ | |
814 | ||
a30d46c0 DB |
815 | int twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); |
816 | int twl_exit_irq(void); | |
1920a61e | 817 | int twl_init_chip_irq(const char *chip); |
a603a7fa | 818 | |
fc7b92fc | 819 | static int twl_remove(struct i2c_client *client) |
a603a7fa DB |
820 | { |
821 | unsigned i; | |
a30d46c0 | 822 | int status; |
a603a7fa | 823 | |
a30d46c0 DB |
824 | status = twl_exit_irq(); |
825 | if (status < 0) | |
826 | return status; | |
a603a7fa | 827 | |
fc7b92fc B |
828 | for (i = 0; i < TWL_NUM_SLAVES; i++) { |
829 | struct twl_client *twl = &twl_modules[i]; | |
a603a7fa DB |
830 | |
831 | if (twl->client && twl->client != client) | |
832 | i2c_unregister_device(twl->client); | |
fc7b92fc | 833 | twl_modules[i].client = NULL; |
a603a7fa DB |
834 | } |
835 | inuse = false; | |
836 | return 0; | |
837 | } | |
838 | ||
839 | /* NOTE: this driver only handles a single twl4030/tps659x0 chip */ | |
b5e102cd | 840 | static int __init |
fc7b92fc | 841 | twl_probe(struct i2c_client *client, const struct i2c_device_id *id) |
a603a7fa DB |
842 | { |
843 | int status; | |
844 | unsigned i; | |
845 | struct twl4030_platform_data *pdata = client->dev.platform_data; | |
846 | ||
847 | if (!pdata) { | |
848 | dev_dbg(&client->dev, "no platform data?\n"); | |
849 | return -EINVAL; | |
850 | } | |
851 | ||
852 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { | |
853 | dev_dbg(&client->dev, "can't talk I2C?\n"); | |
854 | return -EIO; | |
855 | } | |
856 | ||
a30d46c0 | 857 | if (inuse) { |
a603a7fa DB |
858 | dev_dbg(&client->dev, "driver is already in use\n"); |
859 | return -EBUSY; | |
860 | } | |
861 | ||
fc7b92fc B |
862 | for (i = 0; i < TWL_NUM_SLAVES; i++) { |
863 | struct twl_client *twl = &twl_modules[i]; | |
a603a7fa DB |
864 | |
865 | twl->address = client->addr + i; | |
866 | if (i == 0) | |
867 | twl->client = client; | |
868 | else { | |
869 | twl->client = i2c_new_dummy(client->adapter, | |
870 | twl->address); | |
871 | if (!twl->client) { | |
a8643430 | 872 | dev_err(&client->dev, |
a603a7fa DB |
873 | "can't attach client %d\n", i); |
874 | status = -ENOMEM; | |
875 | goto fail; | |
876 | } | |
a603a7fa DB |
877 | } |
878 | mutex_init(&twl->xfer_lock); | |
879 | } | |
880 | inuse = true; | |
881 | ||
882 | /* setup clock framework */ | |
38a68496 | 883 | clocks_init(&client->dev, pdata->clock); |
a603a7fa | 884 | |
ebf0bd36 AK |
885 | /* load power event scripts */ |
886 | if (twl_has_power() && pdata->power) | |
887 | twl4030_power_init(pdata->power); | |
888 | ||
a603a7fa DB |
889 | /* Maybe init the T2 Interrupt subsystem */ |
890 | if (client->irq | |
891 | && pdata->irq_base | |
892 | && pdata->irq_end > pdata->irq_base) { | |
1920a61e | 893 | twl_init_chip_irq(id->name); |
a30d46c0 DB |
894 | status = twl_init_irq(client->irq, pdata->irq_base, pdata->irq_end); |
895 | if (status < 0) | |
896 | goto fail; | |
a603a7fa DB |
897 | } |
898 | ||
dad759ff | 899 | status = add_children(pdata, id->driver_data); |
a603a7fa DB |
900 | fail: |
901 | if (status < 0) | |
fc7b92fc | 902 | twl_remove(client); |
a603a7fa DB |
903 | return status; |
904 | } | |
905 | ||
fc7b92fc | 906 | static const struct i2c_device_id twl_ids[] = { |
dad759ff DB |
907 | { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ |
908 | { "twl5030", 0 }, /* T2 updated */ | |
1920a61e | 909 | { "twl5031", TWL5031 }, /* TWL5030 updated */ |
dad759ff DB |
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 */ | |
a603a7fa DB |
913 | { /* end of list */ }, |
914 | }; | |
fc7b92fc | 915 | MODULE_DEVICE_TABLE(i2c, twl_ids); |
a603a7fa DB |
916 | |
917 | /* One Client Driver , 4 Clients */ | |
fc7b92fc | 918 | static struct i2c_driver twl_driver = { |
a603a7fa | 919 | .driver.name = DRIVER_NAME, |
fc7b92fc B |
920 | .id_table = twl_ids, |
921 | .probe = twl_probe, | |
922 | .remove = twl_remove, | |
a603a7fa DB |
923 | }; |
924 | ||
fc7b92fc | 925 | static int __init twl_init(void) |
a603a7fa | 926 | { |
fc7b92fc | 927 | return i2c_add_driver(&twl_driver); |
a603a7fa | 928 | } |
fc7b92fc | 929 | subsys_initcall(twl_init); |
a603a7fa | 930 | |
fc7b92fc | 931 | static void __exit twl_exit(void) |
a603a7fa | 932 | { |
fc7b92fc | 933 | i2c_del_driver(&twl_driver); |
a603a7fa | 934 | } |
fc7b92fc | 935 | module_exit(twl_exit); |
a603a7fa DB |
936 | |
937 | MODULE_AUTHOR("Texas Instruments, Inc."); | |
fc7b92fc | 938 | MODULE_DESCRIPTION("I2C Core interface for TWL"); |
a603a7fa | 939 | MODULE_LICENSE("GPL"); |