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 | ||
e8deb28c B |
184 | /* subchip/slave 0 0x48 - POWER */ |
185 | #define TWL6030_BASEADD_RTC 0x0000 | |
186 | #define TWL6030_BASEADD_MEM 0x0017 | |
187 | #define TWL6030_BASEADD_PM_MASTER 0x001F | |
188 | #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ | |
189 | #define TWL6030_BASEADD_PM_MISC 0x00E2 | |
190 | #define TWL6030_BASEADD_PM_PUPD 0x00F0 | |
191 | ||
192 | /* subchip/slave 1 0x49 - FEATURE */ | |
193 | #define TWL6030_BASEADD_USB 0x0000 | |
194 | #define TWL6030_BASEADD_GPADC_CTRL 0x002E | |
195 | #define TWL6030_BASEADD_AUX 0x0090 | |
196 | #define TWL6030_BASEADD_PWM 0x00BA | |
197 | #define TWL6030_BASEADD_GASGAUGE 0x00C0 | |
198 | #define TWL6030_BASEADD_PIH 0x00D0 | |
199 | #define TWL6030_BASEADD_CHARGER 0x00E0 | |
200 | ||
201 | /* subchip/slave 2 0x4A - DFT */ | |
202 | #define TWL6030_BASEADD_DIEID 0x00C0 | |
203 | ||
204 | /* subchip/slave 3 0x4B - AUDIO */ | |
205 | #define TWL6030_BASEADD_AUDIO 0x0000 | |
206 | #define TWL6030_BASEADD_RSV 0x0000 | |
207 | ||
a603a7fa DB |
208 | /* Few power values */ |
209 | #define R_CFG_BOOT 0x05 | |
210 | #define R_PROTECT_KEY 0x0E | |
211 | ||
212 | /* access control values for R_PROTECT_KEY */ | |
213 | #define KEY_UNLOCK1 0xce | |
214 | #define KEY_UNLOCK2 0xec | |
215 | #define KEY_LOCK 0x00 | |
216 | ||
217 | /* some fields in R_CFG_BOOT */ | |
218 | #define HFCLK_FREQ_19p2_MHZ (1 << 0) | |
219 | #define HFCLK_FREQ_26_MHZ (2 << 0) | |
220 | #define HFCLK_FREQ_38p4_MHZ (3 << 0) | |
221 | #define HIGH_PERF_SQ (1 << 3) | |
38a68496 | 222 | #define CK32K_LOWPWR_EN (1 << 7) |
a603a7fa DB |
223 | |
224 | ||
dad759ff DB |
225 | /* chip-specific feature flags, for i2c_device_id.driver_data */ |
226 | #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */ | |
227 | #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */ | |
1920a61e | 228 | #define TWL5031 BIT(2) /* twl5031 has different registers */ |
e8deb28c | 229 | #define TWL6030_CLASS BIT(3) /* TWL6030 class */ |
dad759ff | 230 | |
a603a7fa DB |
231 | /*----------------------------------------------------------------------*/ |
232 | ||
a603a7fa DB |
233 | /* is driver active, bound to a chip? */ |
234 | static bool inuse; | |
235 | ||
e8deb28c B |
236 | static unsigned int twl_id; |
237 | unsigned int twl_rev(void) | |
238 | { | |
239 | return twl_id; | |
240 | } | |
241 | EXPORT_SYMBOL(twl_rev); | |
242 | ||
243 | /* Structure for each TWL4030/TWL6030 Slave */ | |
fc7b92fc | 244 | struct twl_client { |
a603a7fa DB |
245 | struct i2c_client *client; |
246 | u8 address; | |
247 | ||
248 | /* max numb of i2c_msg required is for read =2 */ | |
249 | struct i2c_msg xfer_msg[2]; | |
250 | ||
251 | /* To lock access to xfer_msg */ | |
252 | struct mutex xfer_lock; | |
253 | }; | |
254 | ||
fc7b92fc | 255 | static struct twl_client twl_modules[TWL_NUM_SLAVES]; |
a603a7fa DB |
256 | |
257 | ||
258 | /* mapping the module id to slave id and base address */ | |
fc7b92fc | 259 | struct twl_mapping { |
a603a7fa DB |
260 | unsigned char sid; /* Slave ID */ |
261 | unsigned char base; /* base address */ | |
262 | }; | |
e8deb28c | 263 | struct twl_mapping *twl_map; |
a603a7fa | 264 | |
fc7b92fc | 265 | static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { |
a603a7fa DB |
266 | /* |
267 | * NOTE: don't change this table without updating the | |
e8deb28c | 268 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
a603a7fa DB |
269 | * so they continue to match the order in this table. |
270 | */ | |
271 | ||
272 | { 0, TWL4030_BASEADD_USB }, | |
273 | ||
274 | { 1, TWL4030_BASEADD_AUDIO_VOICE }, | |
275 | { 1, TWL4030_BASEADD_GPIO }, | |
276 | { 1, TWL4030_BASEADD_INTBR }, | |
277 | { 1, TWL4030_BASEADD_PIH }, | |
278 | { 1, TWL4030_BASEADD_TEST }, | |
279 | ||
280 | { 2, TWL4030_BASEADD_KEYPAD }, | |
281 | { 2, TWL4030_BASEADD_MADC }, | |
282 | { 2, TWL4030_BASEADD_INTERRUPTS }, | |
283 | { 2, TWL4030_BASEADD_LED }, | |
284 | { 2, TWL4030_BASEADD_MAIN_CHARGE }, | |
285 | { 2, TWL4030_BASEADD_PRECHARGE }, | |
286 | { 2, TWL4030_BASEADD_PWM0 }, | |
287 | { 2, TWL4030_BASEADD_PWM1 }, | |
288 | { 2, TWL4030_BASEADD_PWMA }, | |
289 | { 2, TWL4030_BASEADD_PWMB }, | |
1920a61e IK |
290 | { 2, TWL5031_BASEADD_ACCESSORY }, |
291 | { 2, TWL5031_BASEADD_INTERRUPTS }, | |
a603a7fa DB |
292 | |
293 | { 3, TWL4030_BASEADD_BACKUP }, | |
294 | { 3, TWL4030_BASEADD_INT }, | |
295 | { 3, TWL4030_BASEADD_PM_MASTER }, | |
296 | { 3, TWL4030_BASEADD_PM_RECEIVER }, | |
297 | { 3, TWL4030_BASEADD_RTC }, | |
298 | { 3, TWL4030_BASEADD_SECURED_REG }, | |
299 | }; | |
300 | ||
e8deb28c B |
301 | static struct twl_mapping twl6030_map[] = { |
302 | /* | |
303 | * NOTE: don't change this table without updating the | |
304 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* | |
305 | * so they continue to match the order in this table. | |
306 | */ | |
307 | { SUB_CHIP_ID1, TWL6030_BASEADD_USB }, | |
308 | { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO }, | |
309 | { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID }, | |
310 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
311 | { SUB_CHIP_ID1, TWL6030_BASEADD_PIH }, | |
312 | ||
313 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
314 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
315 | { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL }, | |
316 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
317 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
318 | ||
319 | { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER }, | |
320 | { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE }, | |
321 | { SUB_CHIP_ID1, TWL6030_BASEADD_PWM }, | |
322 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
323 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
324 | ||
325 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
326 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
327 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
328 | { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER }, | |
329 | { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC }, | |
330 | ||
331 | { SUB_CHIP_ID0, TWL6030_BASEADD_RTC }, | |
332 | { SUB_CHIP_ID0, TWL6030_BASEADD_MEM }, | |
333 | }; | |
334 | ||
a603a7fa DB |
335 | /*----------------------------------------------------------------------*/ |
336 | ||
a603a7fa DB |
337 | /* Exported Functions */ |
338 | ||
339 | /** | |
fc7b92fc | 340 | * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
341 | * @mod_no: module number |
342 | * @value: an array of num_bytes+1 containing data to write | |
343 | * @reg: register address (just offset will do) | |
344 | * @num_bytes: number of bytes to transfer | |
345 | * | |
346 | * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and | |
347 | * valid data starts at Offset 1. | |
348 | * | |
349 | * Returns the result of operation - 0 is success | |
350 | */ | |
fc7b92fc | 351 | int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
352 | { |
353 | int ret; | |
354 | int sid; | |
fc7b92fc | 355 | struct twl_client *twl; |
a603a7fa DB |
356 | struct i2c_msg *msg; |
357 | ||
fc7b92fc | 358 | if (unlikely(mod_no > TWL_MODULE_LAST)) { |
a603a7fa DB |
359 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
360 | return -EPERM; | |
361 | } | |
e8deb28c | 362 | sid = twl_map[mod_no].sid; |
fc7b92fc | 363 | twl = &twl_modules[sid]; |
a603a7fa DB |
364 | |
365 | if (unlikely(!inuse)) { | |
366 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
367 | return -EPERM; | |
368 | } | |
369 | mutex_lock(&twl->xfer_lock); | |
370 | /* | |
371 | * [MSG1]: fill the register address data | |
372 | * fill the data Tx buffer | |
373 | */ | |
374 | msg = &twl->xfer_msg[0]; | |
375 | msg->addr = twl->address; | |
376 | msg->len = num_bytes + 1; | |
377 | msg->flags = 0; | |
378 | msg->buf = value; | |
379 | /* over write the first byte of buffer with the register address */ | |
e8deb28c | 380 | *value = twl_map[mod_no].base + reg; |
a603a7fa DB |
381 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1); |
382 | mutex_unlock(&twl->xfer_lock); | |
383 | ||
147e0847 AK |
384 | /* i2c_transfer returns number of messages transferred */ |
385 | if (ret != 1) { | |
386 | pr_err("%s: i2c_write failed to transfer all messages\n", | |
387 | DRIVER_NAME); | |
388 | if (ret < 0) | |
389 | return ret; | |
390 | else | |
391 | return -EIO; | |
392 | } else { | |
393 | return 0; | |
394 | } | |
a603a7fa | 395 | } |
fc7b92fc | 396 | EXPORT_SYMBOL(twl_i2c_write); |
a603a7fa DB |
397 | |
398 | /** | |
fc7b92fc | 399 | * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
400 | * @mod_no: module number |
401 | * @value: an array of num_bytes containing data to be read | |
402 | * @reg: register address (just offset will do) | |
403 | * @num_bytes: number of bytes to transfer | |
404 | * | |
405 | * Returns result of operation - num_bytes is success else failure. | |
406 | */ | |
fc7b92fc | 407 | int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
408 | { |
409 | int ret; | |
410 | u8 val; | |
411 | int sid; | |
fc7b92fc | 412 | struct twl_client *twl; |
a603a7fa DB |
413 | struct i2c_msg *msg; |
414 | ||
fc7b92fc | 415 | if (unlikely(mod_no > TWL_MODULE_LAST)) { |
a603a7fa DB |
416 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
417 | return -EPERM; | |
418 | } | |
e8deb28c | 419 | sid = twl_map[mod_no].sid; |
fc7b92fc | 420 | twl = &twl_modules[sid]; |
a603a7fa DB |
421 | |
422 | if (unlikely(!inuse)) { | |
423 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
424 | return -EPERM; | |
425 | } | |
426 | mutex_lock(&twl->xfer_lock); | |
427 | /* [MSG1] fill the register address data */ | |
428 | msg = &twl->xfer_msg[0]; | |
429 | msg->addr = twl->address; | |
430 | msg->len = 1; | |
431 | msg->flags = 0; /* Read the register value */ | |
e8deb28c | 432 | val = twl_map[mod_no].base + reg; |
a603a7fa DB |
433 | msg->buf = &val; |
434 | /* [MSG2] fill the data rx buffer */ | |
435 | msg = &twl->xfer_msg[1]; | |
436 | msg->addr = twl->address; | |
437 | msg->flags = I2C_M_RD; /* Read the register value */ | |
438 | msg->len = num_bytes; /* only n bytes */ | |
439 | msg->buf = value; | |
440 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); | |
441 | mutex_unlock(&twl->xfer_lock); | |
442 | ||
147e0847 AK |
443 | /* i2c_transfer returns number of messages transferred */ |
444 | if (ret != 2) { | |
445 | pr_err("%s: i2c_read failed to transfer all messages\n", | |
446 | DRIVER_NAME); | |
447 | if (ret < 0) | |
448 | return ret; | |
449 | else | |
450 | return -EIO; | |
451 | } else { | |
452 | return 0; | |
453 | } | |
a603a7fa | 454 | } |
fc7b92fc | 455 | EXPORT_SYMBOL(twl_i2c_read); |
a603a7fa DB |
456 | |
457 | /** | |
fc7b92fc | 458 | * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
459 | * @mod_no: module number |
460 | * @value: the value to be written 8 bit | |
461 | * @reg: register address (just offset will do) | |
462 | * | |
463 | * Returns result of operation - 0 is success | |
464 | */ | |
fc7b92fc | 465 | int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg) |
a603a7fa DB |
466 | { |
467 | ||
468 | /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */ | |
469 | u8 temp_buffer[2] = { 0 }; | |
470 | /* offset 1 contains the data */ | |
471 | temp_buffer[1] = value; | |
fc7b92fc | 472 | return twl_i2c_write(mod_no, temp_buffer, reg, 1); |
a603a7fa | 473 | } |
fc7b92fc | 474 | EXPORT_SYMBOL(twl_i2c_write_u8); |
a603a7fa DB |
475 | |
476 | /** | |
fc7b92fc | 477 | * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
478 | * @mod_no: module number |
479 | * @value: the value read 8 bit | |
480 | * @reg: register address (just offset will do) | |
481 | * | |
482 | * Returns result of operation - 0 is success | |
483 | */ | |
fc7b92fc | 484 | int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) |
a603a7fa | 485 | { |
fc7b92fc | 486 | return twl_i2c_read(mod_no, value, reg, 1); |
a603a7fa | 487 | } |
fc7b92fc | 488 | EXPORT_SYMBOL(twl_i2c_read_u8); |
a603a7fa DB |
489 | |
490 | /*----------------------------------------------------------------------*/ | |
491 | ||
dad759ff DB |
492 | static struct device * |
493 | add_numbered_child(unsigned chip, const char *name, int num, | |
5725d66b DB |
494 | void *pdata, unsigned pdata_len, |
495 | bool can_wakeup, int irq0, int irq1) | |
a603a7fa | 496 | { |
5725d66b | 497 | struct platform_device *pdev; |
fc7b92fc | 498 | struct twl_client *twl = &twl_modules[chip]; |
5725d66b DB |
499 | int status; |
500 | ||
dad759ff | 501 | pdev = platform_device_alloc(name, num); |
5725d66b DB |
502 | if (!pdev) { |
503 | dev_dbg(&twl->client->dev, "can't alloc dev\n"); | |
504 | status = -ENOMEM; | |
505 | goto err; | |
506 | } | |
a603a7fa | 507 | |
5725d66b DB |
508 | device_init_wakeup(&pdev->dev, can_wakeup); |
509 | pdev->dev.parent = &twl->client->dev; | |
a603a7fa | 510 | |
5725d66b DB |
511 | if (pdata) { |
512 | status = platform_device_add_data(pdev, pdata, pdata_len); | |
513 | if (status < 0) { | |
514 | dev_dbg(&pdev->dev, "can't add platform_data\n"); | |
a603a7fa DB |
515 | goto err; |
516 | } | |
5725d66b | 517 | } |
a603a7fa | 518 | |
5725d66b DB |
519 | if (irq0) { |
520 | struct resource r[2] = { | |
521 | { .start = irq0, .flags = IORESOURCE_IRQ, }, | |
522 | { .start = irq1, .flags = IORESOURCE_IRQ, }, | |
523 | }; | |
a603a7fa | 524 | |
5725d66b | 525 | status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); |
a603a7fa | 526 | if (status < 0) { |
5725d66b | 527 | dev_dbg(&pdev->dev, "can't add irqs\n"); |
a603a7fa DB |
528 | goto err; |
529 | } | |
530 | } | |
531 | ||
5725d66b | 532 | status = platform_device_add(pdev); |
a603a7fa | 533 | |
5725d66b DB |
534 | err: |
535 | if (status < 0) { | |
536 | platform_device_put(pdev); | |
537 | dev_err(&twl->client->dev, "can't add %s dev\n", name); | |
538 | return ERR_PTR(status); | |
539 | } | |
540 | return &pdev->dev; | |
541 | } | |
a603a7fa | 542 | |
dad759ff DB |
543 | static inline struct device *add_child(unsigned chip, const char *name, |
544 | void *pdata, unsigned pdata_len, | |
545 | bool can_wakeup, int irq0, int irq1) | |
546 | { | |
547 | return add_numbered_child(chip, name, -1, pdata, pdata_len, | |
548 | can_wakeup, irq0, irq1); | |
549 | } | |
550 | ||
551 | static struct device * | |
552 | add_regulator_linked(int num, struct regulator_init_data *pdata, | |
553 | struct regulator_consumer_supply *consumers, | |
554 | unsigned num_consumers) | |
555 | { | |
e8deb28c | 556 | unsigned sub_chip_id; |
dad759ff DB |
557 | /* regulator framework demands init_data ... */ |
558 | if (!pdata) | |
559 | return NULL; | |
560 | ||
b73eac78 | 561 | if (consumers) { |
dad759ff DB |
562 | pdata->consumer_supplies = consumers; |
563 | pdata->num_consumer_supplies = num_consumers; | |
564 | } | |
565 | ||
566 | /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ | |
e8deb28c B |
567 | sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid; |
568 | return add_numbered_child(sub_chip_id, "twl_reg", num, | |
dad759ff DB |
569 | pdata, sizeof(*pdata), false, 0, 0); |
570 | } | |
571 | ||
572 | static struct device * | |
573 | add_regulator(int num, struct regulator_init_data *pdata) | |
574 | { | |
575 | return add_regulator_linked(num, pdata, NULL, 0); | |
576 | } | |
577 | ||
5725d66b DB |
578 | /* |
579 | * NOTE: We know the first 8 IRQs after pdata->base_irq are | |
580 | * for the PIH, and the next are for the PWR_INT SIH, since | |
581 | * that's how twl_init_irq() sets things up. | |
582 | */ | |
a603a7fa | 583 | |
dad759ff DB |
584 | static int |
585 | add_children(struct twl4030_platform_data *pdata, unsigned long features) | |
5725d66b DB |
586 | { |
587 | struct device *child; | |
e8deb28c | 588 | unsigned sub_chip_id; |
a603a7fa | 589 | |
1920a61e IK |
590 | if (twl_has_bci() && pdata->bci && |
591 | !(features & (TPS_SUBSET | TWL5031))) { | |
5725d66b DB |
592 | child = add_child(3, "twl4030_bci", |
593 | pdata->bci, sizeof(*pdata->bci), | |
594 | false, | |
595 | /* irq0 = CHG_PRES, irq1 = BCI */ | |
fc7b92fc B |
596 | pdata->irq_base + BCI_PRES_INTR_OFFSET, |
597 | pdata->irq_base + BCI_INTR_OFFSET); | |
5725d66b DB |
598 | if (IS_ERR(child)) |
599 | return PTR_ERR(child); | |
600 | } | |
a603a7fa | 601 | |
5725d66b | 602 | if (twl_has_gpio() && pdata->gpio) { |
fc7b92fc | 603 | child = add_child(SUB_CHIP_ID1, "twl4030_gpio", |
5725d66b | 604 | pdata->gpio, sizeof(*pdata->gpio), |
fc7b92fc | 605 | false, pdata->irq_base + GPIO_INTR_OFFSET, 0); |
5725d66b DB |
606 | if (IS_ERR(child)) |
607 | return PTR_ERR(child); | |
a603a7fa DB |
608 | } |
609 | ||
610 | if (twl_has_keypad() && pdata->keypad) { | |
fc7b92fc | 611 | child = add_child(SUB_CHIP_ID2, "twl4030_keypad", |
5725d66b | 612 | pdata->keypad, sizeof(*pdata->keypad), |
fc7b92fc | 613 | true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0); |
5725d66b DB |
614 | if (IS_ERR(child)) |
615 | return PTR_ERR(child); | |
a603a7fa DB |
616 | } |
617 | ||
618 | if (twl_has_madc() && pdata->madc) { | |
5725d66b DB |
619 | child = add_child(2, "twl4030_madc", |
620 | pdata->madc, sizeof(*pdata->madc), | |
fc7b92fc | 621 | true, pdata->irq_base + MADC_INTR_OFFSET, 0); |
5725d66b DB |
622 | if (IS_ERR(child)) |
623 | return PTR_ERR(child); | |
a603a7fa DB |
624 | } |
625 | ||
626 | if (twl_has_rtc()) { | |
a603a7fa | 627 | /* |
5725d66b | 628 | * REVISIT platform_data here currently might expose the |
a603a7fa | 629 | * "msecure" line ... but for now we just expect board |
5725d66b | 630 | * setup to tell the chip "it's always ok to SET_TIME". |
a603a7fa DB |
631 | * Eventually, Linux might become more aware of such |
632 | * HW security concerns, and "least privilege". | |
633 | */ | |
e8deb28c B |
634 | sub_chip_id = twl_map[TWL_MODULE_RTC].sid; |
635 | child = add_child(sub_chip_id, "twl_rtc", | |
5725d66b | 636 | NULL, 0, |
fc7b92fc | 637 | true, pdata->irq_base + RTC_INTR_OFFSET, 0); |
5725d66b DB |
638 | if (IS_ERR(child)) |
639 | return PTR_ERR(child); | |
a603a7fa DB |
640 | } |
641 | ||
9da66539 | 642 | if (twl_has_usb() && pdata->usb && twl_class_is_4030()) { |
f8ebdff0 RQ |
643 | |
644 | static struct regulator_consumer_supply usb1v5 = { | |
645 | .supply = "usb1v5", | |
646 | }; | |
647 | static struct regulator_consumer_supply usb1v8 = { | |
648 | .supply = "usb1v8", | |
649 | }; | |
650 | static struct regulator_consumer_supply usb3v1 = { | |
651 | .supply = "usb3v1", | |
652 | }; | |
653 | ||
654 | /* First add the regulators so that they can be used by transceiver */ | |
655 | if (twl_has_regulator()) { | |
656 | /* this is a template that gets copied */ | |
657 | struct regulator_init_data usb_fixed = { | |
658 | .constraints.valid_modes_mask = | |
659 | REGULATOR_MODE_NORMAL | |
660 | | REGULATOR_MODE_STANDBY, | |
661 | .constraints.valid_ops_mask = | |
662 | REGULATOR_CHANGE_MODE | |
663 | | REGULATOR_CHANGE_STATUS, | |
664 | }; | |
665 | ||
666 | child = add_regulator_linked(TWL4030_REG_VUSB1V5, | |
667 | &usb_fixed, &usb1v5, 1); | |
668 | if (IS_ERR(child)) | |
669 | return PTR_ERR(child); | |
670 | ||
671 | child = add_regulator_linked(TWL4030_REG_VUSB1V8, | |
672 | &usb_fixed, &usb1v8, 1); | |
673 | if (IS_ERR(child)) | |
674 | return PTR_ERR(child); | |
675 | ||
676 | child = add_regulator_linked(TWL4030_REG_VUSB3V1, | |
677 | &usb_fixed, &usb3v1, 1); | |
678 | if (IS_ERR(child)) | |
679 | return PTR_ERR(child); | |
680 | ||
681 | } | |
682 | ||
5725d66b DB |
683 | child = add_child(0, "twl4030_usb", |
684 | pdata->usb, sizeof(*pdata->usb), | |
685 | true, | |
686 | /* irq0 = USB_PRES, irq1 = USB */ | |
fc7b92fc B |
687 | pdata->irq_base + USB_PRES_INTR_OFFSET, |
688 | pdata->irq_base + USB_INTR_OFFSET); | |
f8ebdff0 | 689 | |
5725d66b DB |
690 | if (IS_ERR(child)) |
691 | return PTR_ERR(child); | |
dad759ff DB |
692 | |
693 | /* we need to connect regulators to this transceiver */ | |
f8ebdff0 RQ |
694 | if (twl_has_regulator() && child) { |
695 | usb1v5.dev = child; | |
696 | usb1v8.dev = child; | |
697 | usb3v1.dev = child; | |
698 | } | |
dad759ff DB |
699 | } |
700 | ||
80e45b1e TK |
701 | if (twl_has_watchdog()) { |
702 | child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); | |
703 | if (IS_ERR(child)) | |
9c3664dd FB |
704 | return PTR_ERR(child); |
705 | } | |
706 | ||
707 | if (twl_has_pwrbutton()) { | |
708 | child = add_child(1, "twl4030_pwrbutton", | |
709 | NULL, 0, true, pdata->irq_base + 8 + 0, 0); | |
710 | if (IS_ERR(child)) | |
80e45b1e TK |
711 | return PTR_ERR(child); |
712 | } | |
713 | ||
0b83ddeb PU |
714 | if (twl_has_codec() && pdata->codec) { |
715 | child = add_child(1, "twl4030_codec", | |
716 | pdata->codec, sizeof(*pdata->codec), | |
717 | false, 0, 0); | |
718 | if (IS_ERR(child)) | |
719 | return PTR_ERR(child); | |
720 | } | |
721 | ||
9da66539 RN |
722 | /* twl4030 regulators */ |
723 | if (twl_has_regulator() && twl_class_is_4030()) { | |
dad759ff DB |
724 | child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1); |
725 | if (IS_ERR(child)) | |
726 | return PTR_ERR(child); | |
ab4abe05 JKS |
727 | |
728 | child = add_regulator(TWL4030_REG_VIO, pdata->vio); | |
729 | if (IS_ERR(child)) | |
730 | return PTR_ERR(child); | |
731 | ||
732 | child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1); | |
733 | if (IS_ERR(child)) | |
734 | return PTR_ERR(child); | |
735 | ||
736 | child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2); | |
737 | if (IS_ERR(child)) | |
738 | return PTR_ERR(child); | |
dad759ff DB |
739 | |
740 | child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1); | |
741 | if (IS_ERR(child)) | |
742 | return PTR_ERR(child); | |
743 | ||
744 | child = add_regulator(TWL4030_REG_VDAC, pdata->vdac); | |
745 | if (IS_ERR(child)) | |
746 | return PTR_ERR(child); | |
747 | ||
748 | child = add_regulator((features & TWL4030_VAUX2) | |
749 | ? TWL4030_REG_VAUX2_4030 | |
750 | : TWL4030_REG_VAUX2, | |
751 | pdata->vaux2); | |
752 | if (IS_ERR(child)) | |
753 | return PTR_ERR(child); | |
ab4abe05 JKS |
754 | |
755 | child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1); | |
756 | if (IS_ERR(child)) | |
757 | return PTR_ERR(child); | |
758 | ||
759 | child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2); | |
760 | if (IS_ERR(child)) | |
761 | return PTR_ERR(child); | |
762 | ||
763 | child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig); | |
764 | if (IS_ERR(child)) | |
765 | return PTR_ERR(child); | |
dad759ff DB |
766 | } |
767 | ||
dad759ff | 768 | /* maybe add LDOs that are omitted on cost-reduced parts */ |
9da66539 RN |
769 | if (twl_has_regulator() && !(features & TPS_SUBSET) |
770 | && twl_class_is_4030()) { | |
dad759ff DB |
771 | child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2); |
772 | if (IS_ERR(child)) | |
773 | return PTR_ERR(child); | |
dad759ff DB |
774 | |
775 | child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2); | |
776 | if (IS_ERR(child)) | |
777 | return PTR_ERR(child); | |
778 | ||
779 | child = add_regulator(TWL4030_REG_VSIM, pdata->vsim); | |
780 | if (IS_ERR(child)) | |
781 | return PTR_ERR(child); | |
782 | ||
783 | child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1); | |
784 | if (IS_ERR(child)) | |
785 | return PTR_ERR(child); | |
786 | ||
787 | child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3); | |
788 | if (IS_ERR(child)) | |
789 | return PTR_ERR(child); | |
790 | ||
791 | child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4); | |
792 | if (IS_ERR(child)) | |
793 | return PTR_ERR(child); | |
a603a7fa DB |
794 | } |
795 | ||
9da66539 RN |
796 | /* twl6030 regulators */ |
797 | if (twl_has_regulator() && twl_class_is_6030()) { | |
798 | child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc); | |
799 | if (IS_ERR(child)) | |
800 | return PTR_ERR(child); | |
801 | ||
802 | child = add_regulator(TWL6030_REG_VPP, pdata->vpp); | |
803 | if (IS_ERR(child)) | |
804 | return PTR_ERR(child); | |
805 | ||
806 | child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim); | |
807 | if (IS_ERR(child)) | |
808 | return PTR_ERR(child); | |
809 | ||
810 | child = add_regulator(TWL6030_REG_VANA, pdata->vana); | |
811 | if (IS_ERR(child)) | |
812 | return PTR_ERR(child); | |
813 | ||
814 | child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio); | |
815 | if (IS_ERR(child)) | |
816 | return PTR_ERR(child); | |
817 | ||
818 | child = add_regulator(TWL6030_REG_VDAC, pdata->vdac); | |
819 | if (IS_ERR(child)) | |
820 | return PTR_ERR(child); | |
821 | ||
822 | child = add_regulator(TWL6030_REG_VUSB, pdata->vusb); | |
823 | if (IS_ERR(child)) | |
824 | return PTR_ERR(child); | |
825 | ||
826 | child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1); | |
827 | if (IS_ERR(child)) | |
828 | return PTR_ERR(child); | |
829 | ||
830 | child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2); | |
831 | if (IS_ERR(child)) | |
832 | return PTR_ERR(child); | |
833 | ||
834 | child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3); | |
835 | if (IS_ERR(child)) | |
836 | return PTR_ERR(child); | |
837 | } | |
838 | ||
5725d66b | 839 | return 0; |
a603a7fa DB |
840 | } |
841 | ||
842 | /*----------------------------------------------------------------------*/ | |
843 | ||
844 | /* | |
845 | * These three functions initialize the on-chip clock framework, | |
846 | * letting it generate the right frequencies for USB, MADC, and | |
847 | * other purposes. | |
848 | */ | |
849 | static inline int __init protect_pm_master(void) | |
850 | { | |
851 | int e = 0; | |
852 | ||
fc7b92fc | 853 | e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_LOCK, |
a603a7fa DB |
854 | R_PROTECT_KEY); |
855 | return e; | |
856 | } | |
857 | ||
858 | static inline int __init unprotect_pm_master(void) | |
859 | { | |
860 | int e = 0; | |
861 | ||
fc7b92fc | 862 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK1, |
a603a7fa | 863 | R_PROTECT_KEY); |
fc7b92fc | 864 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK2, |
a603a7fa DB |
865 | R_PROTECT_KEY); |
866 | return e; | |
867 | } | |
868 | ||
38a68496 IK |
869 | static void clocks_init(struct device *dev, |
870 | struct twl4030_clock_init_data *clock) | |
a603a7fa DB |
871 | { |
872 | int e = 0; | |
873 | struct clk *osc; | |
874 | u32 rate; | |
875 | u8 ctrl = HFCLK_FREQ_26_MHZ; | |
876 | ||
877 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) | |
878 | if (cpu_is_omap2430()) | |
e6b50c8d | 879 | osc = clk_get(dev, "osc_ck"); |
a603a7fa | 880 | else |
e6b50c8d | 881 | osc = clk_get(dev, "osc_sys_ck"); |
6354ab5c | 882 | |
a603a7fa | 883 | if (IS_ERR(osc)) { |
fc7b92fc | 884 | printk(KERN_WARNING "Skipping twl internal clock init and " |
a603a7fa DB |
885 | "using bootloader value (unknown osc rate)\n"); |
886 | return; | |
887 | } | |
888 | ||
889 | rate = clk_get_rate(osc); | |
890 | clk_put(osc); | |
891 | ||
6354ab5c SO |
892 | #else |
893 | /* REVISIT for non-OMAP systems, pass the clock rate from | |
894 | * board init code, using platform_data. | |
895 | */ | |
896 | osc = ERR_PTR(-EIO); | |
897 | ||
fc7b92fc | 898 | printk(KERN_WARNING "Skipping twl internal clock init and " |
6354ab5c SO |
899 | "using bootloader value (unknown osc rate)\n"); |
900 | ||
901 | return; | |
902 | #endif | |
903 | ||
a603a7fa DB |
904 | switch (rate) { |
905 | case 19200000: | |
906 | ctrl = HFCLK_FREQ_19p2_MHZ; | |
907 | break; | |
908 | case 26000000: | |
909 | ctrl = HFCLK_FREQ_26_MHZ; | |
910 | break; | |
911 | case 38400000: | |
912 | ctrl = HFCLK_FREQ_38p4_MHZ; | |
913 | break; | |
914 | } | |
915 | ||
916 | ctrl |= HIGH_PERF_SQ; | |
38a68496 IK |
917 | if (clock && clock->ck32k_lowpwr_enable) |
918 | ctrl |= CK32K_LOWPWR_EN; | |
919 | ||
a603a7fa DB |
920 | e |= unprotect_pm_master(); |
921 | /* effect->MADC+USB ck en */ | |
fc7b92fc | 922 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); |
a603a7fa DB |
923 | e |= protect_pm_master(); |
924 | ||
925 | if (e < 0) | |
926 | pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); | |
927 | } | |
928 | ||
929 | /*----------------------------------------------------------------------*/ | |
930 | ||
e8deb28c B |
931 | int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); |
932 | int twl4030_exit_irq(void); | |
933 | int twl4030_init_chip_irq(const char *chip); | |
934 | int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); | |
935 | int twl6030_exit_irq(void); | |
a603a7fa | 936 | |
fc7b92fc | 937 | static int twl_remove(struct i2c_client *client) |
a603a7fa DB |
938 | { |
939 | unsigned i; | |
a30d46c0 | 940 | int status; |
a603a7fa | 941 | |
e8deb28c B |
942 | if (twl_class_is_4030()) |
943 | status = twl4030_exit_irq(); | |
944 | else | |
945 | status = twl6030_exit_irq(); | |
946 | ||
a30d46c0 DB |
947 | if (status < 0) |
948 | return status; | |
a603a7fa | 949 | |
fc7b92fc B |
950 | for (i = 0; i < TWL_NUM_SLAVES; i++) { |
951 | struct twl_client *twl = &twl_modules[i]; | |
a603a7fa DB |
952 | |
953 | if (twl->client && twl->client != client) | |
954 | i2c_unregister_device(twl->client); | |
fc7b92fc | 955 | twl_modules[i].client = NULL; |
a603a7fa DB |
956 | } |
957 | inuse = false; | |
958 | return 0; | |
959 | } | |
960 | ||
961 | /* NOTE: this driver only handles a single twl4030/tps659x0 chip */ | |
b5e102cd | 962 | static int __init |
fc7b92fc | 963 | twl_probe(struct i2c_client *client, const struct i2c_device_id *id) |
a603a7fa DB |
964 | { |
965 | int status; | |
966 | unsigned i; | |
967 | struct twl4030_platform_data *pdata = client->dev.platform_data; | |
968 | ||
969 | if (!pdata) { | |
970 | dev_dbg(&client->dev, "no platform data?\n"); | |
971 | return -EINVAL; | |
972 | } | |
973 | ||
974 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { | |
975 | dev_dbg(&client->dev, "can't talk I2C?\n"); | |
976 | return -EIO; | |
977 | } | |
978 | ||
a30d46c0 | 979 | if (inuse) { |
a603a7fa DB |
980 | dev_dbg(&client->dev, "driver is already in use\n"); |
981 | return -EBUSY; | |
982 | } | |
983 | ||
fc7b92fc B |
984 | for (i = 0; i < TWL_NUM_SLAVES; i++) { |
985 | struct twl_client *twl = &twl_modules[i]; | |
a603a7fa DB |
986 | |
987 | twl->address = client->addr + i; | |
988 | if (i == 0) | |
989 | twl->client = client; | |
990 | else { | |
991 | twl->client = i2c_new_dummy(client->adapter, | |
992 | twl->address); | |
993 | if (!twl->client) { | |
a8643430 | 994 | dev_err(&client->dev, |
a603a7fa DB |
995 | "can't attach client %d\n", i); |
996 | status = -ENOMEM; | |
997 | goto fail; | |
998 | } | |
a603a7fa DB |
999 | } |
1000 | mutex_init(&twl->xfer_lock); | |
1001 | } | |
1002 | inuse = true; | |
e8deb28c B |
1003 | if ((id->driver_data) & TWL6030_CLASS) { |
1004 | twl_id = TWL6030_CLASS_ID; | |
1005 | twl_map = &twl6030_map[0]; | |
1006 | } else { | |
1007 | twl_id = TWL4030_CLASS_ID; | |
1008 | twl_map = &twl4030_map[0]; | |
1009 | } | |
a603a7fa DB |
1010 | |
1011 | /* setup clock framework */ | |
38a68496 | 1012 | clocks_init(&client->dev, pdata->clock); |
a603a7fa | 1013 | |
ebf0bd36 AK |
1014 | /* load power event scripts */ |
1015 | if (twl_has_power() && pdata->power) | |
1016 | twl4030_power_init(pdata->power); | |
1017 | ||
a603a7fa DB |
1018 | /* Maybe init the T2 Interrupt subsystem */ |
1019 | if (client->irq | |
1020 | && pdata->irq_base | |
1021 | && pdata->irq_end > pdata->irq_base) { | |
e8deb28c B |
1022 | if (twl_class_is_4030()) { |
1023 | twl4030_init_chip_irq(id->name); | |
1024 | status = twl4030_init_irq(client->irq, pdata->irq_base, | |
1025 | pdata->irq_end); | |
1026 | } else { | |
1027 | status = twl6030_init_irq(client->irq, pdata->irq_base, | |
1028 | pdata->irq_end); | |
1029 | } | |
1030 | ||
a30d46c0 DB |
1031 | if (status < 0) |
1032 | goto fail; | |
a603a7fa DB |
1033 | } |
1034 | ||
dad759ff | 1035 | status = add_children(pdata, id->driver_data); |
a603a7fa DB |
1036 | fail: |
1037 | if (status < 0) | |
fc7b92fc | 1038 | twl_remove(client); |
a603a7fa DB |
1039 | return status; |
1040 | } | |
1041 | ||
fc7b92fc | 1042 | static const struct i2c_device_id twl_ids[] = { |
dad759ff DB |
1043 | { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ |
1044 | { "twl5030", 0 }, /* T2 updated */ | |
1920a61e | 1045 | { "twl5031", TWL5031 }, /* TWL5030 updated */ |
dad759ff DB |
1046 | { "tps65950", 0 }, /* catalog version of twl5030 */ |
1047 | { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ | |
1048 | { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ | |
e8deb28c | 1049 | { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ |
a603a7fa DB |
1050 | { /* end of list */ }, |
1051 | }; | |
fc7b92fc | 1052 | MODULE_DEVICE_TABLE(i2c, twl_ids); |
a603a7fa DB |
1053 | |
1054 | /* One Client Driver , 4 Clients */ | |
fc7b92fc | 1055 | static struct i2c_driver twl_driver = { |
a603a7fa | 1056 | .driver.name = DRIVER_NAME, |
fc7b92fc B |
1057 | .id_table = twl_ids, |
1058 | .probe = twl_probe, | |
1059 | .remove = twl_remove, | |
a603a7fa DB |
1060 | }; |
1061 | ||
fc7b92fc | 1062 | static int __init twl_init(void) |
a603a7fa | 1063 | { |
fc7b92fc | 1064 | return i2c_add_driver(&twl_driver); |
a603a7fa | 1065 | } |
fc7b92fc | 1066 | subsys_initcall(twl_init); |
a603a7fa | 1067 | |
fc7b92fc | 1068 | static void __exit twl_exit(void) |
a603a7fa | 1069 | { |
fc7b92fc | 1070 | i2c_del_driver(&twl_driver); |
a603a7fa | 1071 | } |
fc7b92fc | 1072 | module_exit(twl_exit); |
a603a7fa DB |
1073 | |
1074 | MODULE_AUTHOR("Texas Instruments, Inc."); | |
fc7b92fc | 1075 | MODULE_DESCRIPTION("I2C Core interface for TWL"); |
a603a7fa | 1076 | MODULE_LICENSE("GPL"); |