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 | 60 | |
a603a7fa DB |
61 | #if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE) |
62 | #define twl_has_keypad() true | |
63 | #else | |
64 | #define twl_has_keypad() false | |
65 | #endif | |
66 | ||
67 | #if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE) | |
68 | #define twl_has_gpio() true | |
69 | #else | |
70 | #define twl_has_gpio() false | |
71 | #endif | |
72 | ||
dad759ff DB |
73 | #if defined(CONFIG_REGULATOR_TWL4030) \ |
74 | || defined(CONFIG_REGULATOR_TWL4030_MODULE) | |
75 | #define twl_has_regulator() true | |
76 | #else | |
77 | #define twl_has_regulator() false | |
78 | #endif | |
79 | ||
a603a7fa DB |
80 | #if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE) |
81 | #define twl_has_madc() true | |
82 | #else | |
83 | #define twl_has_madc() false | |
84 | #endif | |
85 | ||
ebf0bd36 AK |
86 | #ifdef CONFIG_TWL4030_POWER |
87 | #define twl_has_power() true | |
88 | #else | |
89 | #define twl_has_power() false | |
90 | #endif | |
91 | ||
a603a7fa DB |
92 | #if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE) |
93 | #define twl_has_rtc() true | |
94 | #else | |
95 | #define twl_has_rtc() false | |
96 | #endif | |
97 | ||
e70357e3 HH |
98 | #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) ||\ |
99 | defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_USB_MODULE) | |
a603a7fa DB |
100 | #define twl_has_usb() true |
101 | #else | |
102 | #define twl_has_usb() false | |
103 | #endif | |
104 | ||
80e45b1e TK |
105 | #if defined(CONFIG_TWL4030_WATCHDOG) || \ |
106 | defined(CONFIG_TWL4030_WATCHDOG_MODULE) | |
107 | #define twl_has_watchdog() true | |
108 | #else | |
109 | #define twl_has_watchdog() false | |
110 | #endif | |
a603a7fa | 111 | |
d62abe56 | 112 | #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\ |
6a1c7b7e | 113 | defined(CONFIG_SND_SOC_TWL6040) || defined(CONFIG_SND_SOC_TWL6040_MODULE) |
0b83ddeb PU |
114 | #define twl_has_codec() true |
115 | #else | |
116 | #define twl_has_codec() false | |
117 | #endif | |
118 | ||
11c39c4b GI |
119 | #if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE) |
120 | #define twl_has_bci() true | |
121 | #else | |
122 | #define twl_has_bci() false | |
123 | #endif | |
124 | ||
a603a7fa DB |
125 | /* Triton Core internal information (BEGIN) */ |
126 | ||
127 | /* Last - for index max*/ | |
128 | #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG | |
129 | ||
fc7b92fc | 130 | #define TWL_NUM_SLAVES 4 |
a603a7fa | 131 | |
9c3664dd | 132 | #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \ |
14e5c82c | 133 | || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE) |
9c3664dd FB |
134 | #define twl_has_pwrbutton() true |
135 | #else | |
136 | #define twl_has_pwrbutton() false | |
137 | #endif | |
a603a7fa | 138 | |
fc7b92fc B |
139 | #define SUB_CHIP_ID0 0 |
140 | #define SUB_CHIP_ID1 1 | |
141 | #define SUB_CHIP_ID2 2 | |
142 | #define SUB_CHIP_ID3 3 | |
143 | ||
144 | #define TWL_MODULE_LAST TWL4030_MODULE_LAST | |
145 | ||
a603a7fa DB |
146 | /* Base Address defns for twl4030_map[] */ |
147 | ||
148 | /* subchip/slave 0 - USB ID */ | |
149 | #define TWL4030_BASEADD_USB 0x0000 | |
150 | ||
151 | /* subchip/slave 1 - AUD ID */ | |
152 | #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 | |
153 | #define TWL4030_BASEADD_GPIO 0x0098 | |
154 | #define TWL4030_BASEADD_INTBR 0x0085 | |
155 | #define TWL4030_BASEADD_PIH 0x0080 | |
156 | #define TWL4030_BASEADD_TEST 0x004C | |
157 | ||
158 | /* subchip/slave 2 - AUX ID */ | |
159 | #define TWL4030_BASEADD_INTERRUPTS 0x00B9 | |
160 | #define TWL4030_BASEADD_LED 0x00EE | |
161 | #define TWL4030_BASEADD_MADC 0x0000 | |
162 | #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 | |
163 | #define TWL4030_BASEADD_PRECHARGE 0x00AA | |
164 | #define TWL4030_BASEADD_PWM0 0x00F8 | |
165 | #define TWL4030_BASEADD_PWM1 0x00FB | |
166 | #define TWL4030_BASEADD_PWMA 0x00EF | |
167 | #define TWL4030_BASEADD_PWMB 0x00F1 | |
168 | #define TWL4030_BASEADD_KEYPAD 0x00D2 | |
169 | ||
1920a61e IK |
170 | #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ |
171 | #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's | |
172 | one */ | |
173 | ||
a603a7fa DB |
174 | /* subchip/slave 3 - POWER ID */ |
175 | #define TWL4030_BASEADD_BACKUP 0x0014 | |
176 | #define TWL4030_BASEADD_INT 0x002E | |
177 | #define TWL4030_BASEADD_PM_MASTER 0x0036 | |
178 | #define TWL4030_BASEADD_PM_RECEIVER 0x005B | |
179 | #define TWL4030_BASEADD_RTC 0x001C | |
180 | #define TWL4030_BASEADD_SECURED_REG 0x0000 | |
181 | ||
182 | /* Triton Core internal information (END) */ | |
183 | ||
184 | ||
e8deb28c B |
185 | /* subchip/slave 0 0x48 - POWER */ |
186 | #define TWL6030_BASEADD_RTC 0x0000 | |
187 | #define TWL6030_BASEADD_MEM 0x0017 | |
188 | #define TWL6030_BASEADD_PM_MASTER 0x001F | |
189 | #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ | |
190 | #define TWL6030_BASEADD_PM_MISC 0x00E2 | |
191 | #define TWL6030_BASEADD_PM_PUPD 0x00F0 | |
192 | ||
193 | /* subchip/slave 1 0x49 - FEATURE */ | |
194 | #define TWL6030_BASEADD_USB 0x0000 | |
195 | #define TWL6030_BASEADD_GPADC_CTRL 0x002E | |
196 | #define TWL6030_BASEADD_AUX 0x0090 | |
197 | #define TWL6030_BASEADD_PWM 0x00BA | |
198 | #define TWL6030_BASEADD_GASGAUGE 0x00C0 | |
199 | #define TWL6030_BASEADD_PIH 0x00D0 | |
200 | #define TWL6030_BASEADD_CHARGER 0x00E0 | |
201 | ||
202 | /* subchip/slave 2 0x4A - DFT */ | |
203 | #define TWL6030_BASEADD_DIEID 0x00C0 | |
204 | ||
205 | /* subchip/slave 3 0x4B - AUDIO */ | |
206 | #define TWL6030_BASEADD_AUDIO 0x0000 | |
207 | #define TWL6030_BASEADD_RSV 0x0000 | |
fa0d9762 | 208 | #define TWL6030_BASEADD_ZERO 0x0000 |
e8deb28c | 209 | |
a603a7fa DB |
210 | /* Few power values */ |
211 | #define R_CFG_BOOT 0x05 | |
a603a7fa DB |
212 | |
213 | /* some fields in R_CFG_BOOT */ | |
214 | #define HFCLK_FREQ_19p2_MHZ (1 << 0) | |
215 | #define HFCLK_FREQ_26_MHZ (2 << 0) | |
216 | #define HFCLK_FREQ_38p4_MHZ (3 << 0) | |
217 | #define HIGH_PERF_SQ (1 << 3) | |
38a68496 | 218 | #define CK32K_LOWPWR_EN (1 << 7) |
a603a7fa DB |
219 | |
220 | ||
dad759ff DB |
221 | /* chip-specific feature flags, for i2c_device_id.driver_data */ |
222 | #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */ | |
223 | #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */ | |
1920a61e | 224 | #define TWL5031 BIT(2) /* twl5031 has different registers */ |
e8deb28c | 225 | #define TWL6030_CLASS BIT(3) /* TWL6030 class */ |
dad759ff | 226 | |
a603a7fa DB |
227 | /*----------------------------------------------------------------------*/ |
228 | ||
a603a7fa DB |
229 | /* is driver active, bound to a chip? */ |
230 | static bool inuse; | |
231 | ||
ca972d13 L |
232 | /* TWL IDCODE Register value */ |
233 | static u32 twl_idcode; | |
234 | ||
e8deb28c B |
235 | static unsigned int twl_id; |
236 | unsigned int twl_rev(void) | |
237 | { | |
238 | return twl_id; | |
239 | } | |
240 | EXPORT_SYMBOL(twl_rev); | |
241 | ||
242 | /* Structure for each TWL4030/TWL6030 Slave */ | |
fc7b92fc | 243 | struct twl_client { |
a603a7fa DB |
244 | struct i2c_client *client; |
245 | u8 address; | |
246 | ||
247 | /* max numb of i2c_msg required is for read =2 */ | |
248 | struct i2c_msg xfer_msg[2]; | |
249 | ||
250 | /* To lock access to xfer_msg */ | |
251 | struct mutex xfer_lock; | |
252 | }; | |
253 | ||
fc7b92fc | 254 | static struct twl_client twl_modules[TWL_NUM_SLAVES]; |
a603a7fa DB |
255 | |
256 | ||
257 | /* mapping the module id to slave id and base address */ | |
fc7b92fc | 258 | struct twl_mapping { |
a603a7fa DB |
259 | unsigned char sid; /* Slave ID */ |
260 | unsigned char base; /* base address */ | |
261 | }; | |
2cfcce18 | 262 | static struct twl_mapping *twl_map; |
a603a7fa | 263 | |
fc7b92fc | 264 | static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { |
a603a7fa DB |
265 | /* |
266 | * NOTE: don't change this table without updating the | |
e8deb28c | 267 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
a603a7fa DB |
268 | * so they continue to match the order in this table. |
269 | */ | |
270 | ||
271 | { 0, TWL4030_BASEADD_USB }, | |
272 | ||
273 | { 1, TWL4030_BASEADD_AUDIO_VOICE }, | |
274 | { 1, TWL4030_BASEADD_GPIO }, | |
275 | { 1, TWL4030_BASEADD_INTBR }, | |
276 | { 1, TWL4030_BASEADD_PIH }, | |
277 | { 1, TWL4030_BASEADD_TEST }, | |
278 | ||
279 | { 2, TWL4030_BASEADD_KEYPAD }, | |
280 | { 2, TWL4030_BASEADD_MADC }, | |
281 | { 2, TWL4030_BASEADD_INTERRUPTS }, | |
282 | { 2, TWL4030_BASEADD_LED }, | |
283 | { 2, TWL4030_BASEADD_MAIN_CHARGE }, | |
284 | { 2, TWL4030_BASEADD_PRECHARGE }, | |
285 | { 2, TWL4030_BASEADD_PWM0 }, | |
286 | { 2, TWL4030_BASEADD_PWM1 }, | |
287 | { 2, TWL4030_BASEADD_PWMA }, | |
288 | { 2, TWL4030_BASEADD_PWMB }, | |
1920a61e IK |
289 | { 2, TWL5031_BASEADD_ACCESSORY }, |
290 | { 2, TWL5031_BASEADD_INTERRUPTS }, | |
a603a7fa DB |
291 | |
292 | { 3, TWL4030_BASEADD_BACKUP }, | |
293 | { 3, TWL4030_BASEADD_INT }, | |
294 | { 3, TWL4030_BASEADD_PM_MASTER }, | |
295 | { 3, TWL4030_BASEADD_PM_RECEIVER }, | |
296 | { 3, TWL4030_BASEADD_RTC }, | |
297 | { 3, TWL4030_BASEADD_SECURED_REG }, | |
298 | }; | |
299 | ||
e8deb28c B |
300 | static struct twl_mapping twl6030_map[] = { |
301 | /* | |
302 | * NOTE: don't change this table without updating the | |
303 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* | |
304 | * so they continue to match the order in this table. | |
305 | */ | |
306 | { SUB_CHIP_ID1, TWL6030_BASEADD_USB }, | |
307 | { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO }, | |
308 | { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID }, | |
309 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
310 | { SUB_CHIP_ID1, TWL6030_BASEADD_PIH }, | |
311 | ||
312 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
313 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
314 | { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL }, | |
315 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
316 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
317 | ||
318 | { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER }, | |
319 | { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE }, | |
320 | { SUB_CHIP_ID1, TWL6030_BASEADD_PWM }, | |
fa0d9762 B |
321 | { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO }, |
322 | { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO }, | |
e8deb28c | 323 | |
fa0d9762 B |
324 | { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, |
325 | { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, | |
e8deb28c B |
326 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, |
327 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
328 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
329 | { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER }, | |
330 | { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC }, | |
331 | ||
332 | { SUB_CHIP_ID0, TWL6030_BASEADD_RTC }, | |
333 | { SUB_CHIP_ID0, TWL6030_BASEADD_MEM }, | |
334 | }; | |
335 | ||
a603a7fa DB |
336 | /*----------------------------------------------------------------------*/ |
337 | ||
a603a7fa DB |
338 | /* Exported Functions */ |
339 | ||
340 | /** | |
fc7b92fc | 341 | * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
342 | * @mod_no: module number |
343 | * @value: an array of num_bytes+1 containing data to write | |
344 | * @reg: register address (just offset will do) | |
345 | * @num_bytes: number of bytes to transfer | |
346 | * | |
347 | * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and | |
348 | * valid data starts at Offset 1. | |
349 | * | |
350 | * Returns the result of operation - 0 is success | |
351 | */ | |
fc7b92fc | 352 | int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
353 | { |
354 | int ret; | |
355 | int sid; | |
fc7b92fc | 356 | struct twl_client *twl; |
a603a7fa DB |
357 | struct i2c_msg *msg; |
358 | ||
fc7b92fc | 359 | if (unlikely(mod_no > TWL_MODULE_LAST)) { |
a603a7fa DB |
360 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
361 | return -EPERM; | |
362 | } | |
e8deb28c | 363 | sid = twl_map[mod_no].sid; |
fc7b92fc | 364 | twl = &twl_modules[sid]; |
a603a7fa DB |
365 | |
366 | if (unlikely(!inuse)) { | |
367 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
368 | return -EPERM; | |
369 | } | |
370 | mutex_lock(&twl->xfer_lock); | |
371 | /* | |
372 | * [MSG1]: fill the register address data | |
373 | * fill the data Tx buffer | |
374 | */ | |
375 | msg = &twl->xfer_msg[0]; | |
376 | msg->addr = twl->address; | |
377 | msg->len = num_bytes + 1; | |
378 | msg->flags = 0; | |
379 | msg->buf = value; | |
380 | /* over write the first byte of buffer with the register address */ | |
e8deb28c | 381 | *value = twl_map[mod_no].base + reg; |
a603a7fa DB |
382 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1); |
383 | mutex_unlock(&twl->xfer_lock); | |
384 | ||
147e0847 AK |
385 | /* i2c_transfer returns number of messages transferred */ |
386 | if (ret != 1) { | |
387 | pr_err("%s: i2c_write failed to transfer all messages\n", | |
388 | DRIVER_NAME); | |
389 | if (ret < 0) | |
390 | return ret; | |
391 | else | |
392 | return -EIO; | |
393 | } else { | |
394 | return 0; | |
395 | } | |
a603a7fa | 396 | } |
fc7b92fc | 397 | EXPORT_SYMBOL(twl_i2c_write); |
a603a7fa DB |
398 | |
399 | /** | |
fc7b92fc | 400 | * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
401 | * @mod_no: module number |
402 | * @value: an array of num_bytes containing data to be read | |
403 | * @reg: register address (just offset will do) | |
404 | * @num_bytes: number of bytes to transfer | |
405 | * | |
406 | * Returns result of operation - num_bytes is success else failure. | |
407 | */ | |
fc7b92fc | 408 | int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
409 | { |
410 | int ret; | |
411 | u8 val; | |
412 | int sid; | |
fc7b92fc | 413 | struct twl_client *twl; |
a603a7fa DB |
414 | struct i2c_msg *msg; |
415 | ||
fc7b92fc | 416 | if (unlikely(mod_no > TWL_MODULE_LAST)) { |
a603a7fa DB |
417 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
418 | return -EPERM; | |
419 | } | |
e8deb28c | 420 | sid = twl_map[mod_no].sid; |
fc7b92fc | 421 | twl = &twl_modules[sid]; |
a603a7fa DB |
422 | |
423 | if (unlikely(!inuse)) { | |
424 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
425 | return -EPERM; | |
426 | } | |
427 | mutex_lock(&twl->xfer_lock); | |
428 | /* [MSG1] fill the register address data */ | |
429 | msg = &twl->xfer_msg[0]; | |
430 | msg->addr = twl->address; | |
431 | msg->len = 1; | |
432 | msg->flags = 0; /* Read the register value */ | |
e8deb28c | 433 | val = twl_map[mod_no].base + reg; |
a603a7fa DB |
434 | msg->buf = &val; |
435 | /* [MSG2] fill the data rx buffer */ | |
436 | msg = &twl->xfer_msg[1]; | |
437 | msg->addr = twl->address; | |
438 | msg->flags = I2C_M_RD; /* Read the register value */ | |
439 | msg->len = num_bytes; /* only n bytes */ | |
440 | msg->buf = value; | |
441 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); | |
442 | mutex_unlock(&twl->xfer_lock); | |
443 | ||
147e0847 AK |
444 | /* i2c_transfer returns number of messages transferred */ |
445 | if (ret != 2) { | |
446 | pr_err("%s: i2c_read failed to transfer all messages\n", | |
447 | DRIVER_NAME); | |
448 | if (ret < 0) | |
449 | return ret; | |
450 | else | |
451 | return -EIO; | |
452 | } else { | |
453 | return 0; | |
454 | } | |
a603a7fa | 455 | } |
fc7b92fc | 456 | EXPORT_SYMBOL(twl_i2c_read); |
a603a7fa DB |
457 | |
458 | /** | |
fc7b92fc | 459 | * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
460 | * @mod_no: module number |
461 | * @value: the value to be written 8 bit | |
462 | * @reg: register address (just offset will do) | |
463 | * | |
464 | * Returns result of operation - 0 is success | |
465 | */ | |
fc7b92fc | 466 | int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg) |
a603a7fa DB |
467 | { |
468 | ||
469 | /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */ | |
470 | u8 temp_buffer[2] = { 0 }; | |
471 | /* offset 1 contains the data */ | |
472 | temp_buffer[1] = value; | |
fc7b92fc | 473 | return twl_i2c_write(mod_no, temp_buffer, reg, 1); |
a603a7fa | 474 | } |
fc7b92fc | 475 | EXPORT_SYMBOL(twl_i2c_write_u8); |
a603a7fa DB |
476 | |
477 | /** | |
fc7b92fc | 478 | * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
479 | * @mod_no: module number |
480 | * @value: the value read 8 bit | |
481 | * @reg: register address (just offset will do) | |
482 | * | |
483 | * Returns result of operation - 0 is success | |
484 | */ | |
fc7b92fc | 485 | int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) |
a603a7fa | 486 | { |
fc7b92fc | 487 | return twl_i2c_read(mod_no, value, reg, 1); |
a603a7fa | 488 | } |
fc7b92fc | 489 | EXPORT_SYMBOL(twl_i2c_read_u8); |
a603a7fa DB |
490 | |
491 | /*----------------------------------------------------------------------*/ | |
492 | ||
ca972d13 L |
493 | /** |
494 | * twl_read_idcode_register - API to read the IDCODE register. | |
495 | * | |
496 | * Unlocks the IDCODE register and read the 32 bit value. | |
497 | */ | |
498 | static int twl_read_idcode_register(void) | |
499 | { | |
500 | int err; | |
501 | ||
502 | err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK, | |
503 | REG_UNLOCK_TEST_REG); | |
504 | if (err) { | |
505 | pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err); | |
506 | goto fail; | |
507 | } | |
508 | ||
509 | err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_idcode), | |
510 | REG_IDCODE_7_0, 4); | |
511 | if (err) { | |
512 | pr_err("TWL4030: unable to read IDCODE -%d\n", err); | |
513 | goto fail; | |
514 | } | |
515 | ||
516 | err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG); | |
517 | if (err) | |
518 | pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err); | |
519 | fail: | |
520 | return err; | |
521 | } | |
522 | ||
523 | /** | |
524 | * twl_get_type - API to get TWL Si type. | |
525 | * | |
526 | * Api to get the TWL Si type from IDCODE value. | |
527 | */ | |
528 | int twl_get_type(void) | |
529 | { | |
530 | return TWL_SIL_TYPE(twl_idcode); | |
531 | } | |
532 | EXPORT_SYMBOL_GPL(twl_get_type); | |
533 | ||
534 | /** | |
535 | * twl_get_version - API to get TWL Si version. | |
536 | * | |
537 | * Api to get the TWL Si version from IDCODE value. | |
538 | */ | |
539 | int twl_get_version(void) | |
540 | { | |
541 | return TWL_SIL_REV(twl_idcode); | |
542 | } | |
543 | EXPORT_SYMBOL_GPL(twl_get_version); | |
544 | ||
dad759ff DB |
545 | static struct device * |
546 | add_numbered_child(unsigned chip, const char *name, int num, | |
5725d66b DB |
547 | void *pdata, unsigned pdata_len, |
548 | bool can_wakeup, int irq0, int irq1) | |
a603a7fa | 549 | { |
5725d66b | 550 | struct platform_device *pdev; |
fc7b92fc | 551 | struct twl_client *twl = &twl_modules[chip]; |
5725d66b DB |
552 | int status; |
553 | ||
dad759ff | 554 | pdev = platform_device_alloc(name, num); |
5725d66b DB |
555 | if (!pdev) { |
556 | dev_dbg(&twl->client->dev, "can't alloc dev\n"); | |
557 | status = -ENOMEM; | |
558 | goto err; | |
559 | } | |
a603a7fa | 560 | |
5725d66b DB |
561 | device_init_wakeup(&pdev->dev, can_wakeup); |
562 | pdev->dev.parent = &twl->client->dev; | |
a603a7fa | 563 | |
5725d66b DB |
564 | if (pdata) { |
565 | status = platform_device_add_data(pdev, pdata, pdata_len); | |
566 | if (status < 0) { | |
567 | dev_dbg(&pdev->dev, "can't add platform_data\n"); | |
a603a7fa DB |
568 | goto err; |
569 | } | |
5725d66b | 570 | } |
a603a7fa | 571 | |
5725d66b DB |
572 | if (irq0) { |
573 | struct resource r[2] = { | |
574 | { .start = irq0, .flags = IORESOURCE_IRQ, }, | |
575 | { .start = irq1, .flags = IORESOURCE_IRQ, }, | |
576 | }; | |
a603a7fa | 577 | |
5725d66b | 578 | status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); |
a603a7fa | 579 | if (status < 0) { |
5725d66b | 580 | dev_dbg(&pdev->dev, "can't add irqs\n"); |
a603a7fa DB |
581 | goto err; |
582 | } | |
583 | } | |
584 | ||
5725d66b | 585 | status = platform_device_add(pdev); |
a603a7fa | 586 | |
5725d66b DB |
587 | err: |
588 | if (status < 0) { | |
589 | platform_device_put(pdev); | |
590 | dev_err(&twl->client->dev, "can't add %s dev\n", name); | |
591 | return ERR_PTR(status); | |
592 | } | |
593 | return &pdev->dev; | |
594 | } | |
a603a7fa | 595 | |
dad759ff DB |
596 | static inline struct device *add_child(unsigned chip, const char *name, |
597 | void *pdata, unsigned pdata_len, | |
598 | bool can_wakeup, int irq0, int irq1) | |
599 | { | |
600 | return add_numbered_child(chip, name, -1, pdata, pdata_len, | |
601 | can_wakeup, irq0, irq1); | |
602 | } | |
603 | ||
604 | static struct device * | |
605 | add_regulator_linked(int num, struct regulator_init_data *pdata, | |
606 | struct regulator_consumer_supply *consumers, | |
607 | unsigned num_consumers) | |
608 | { | |
e8deb28c | 609 | unsigned sub_chip_id; |
dad759ff DB |
610 | /* regulator framework demands init_data ... */ |
611 | if (!pdata) | |
612 | return NULL; | |
613 | ||
b73eac78 | 614 | if (consumers) { |
dad759ff DB |
615 | pdata->consumer_supplies = consumers; |
616 | pdata->num_consumer_supplies = num_consumers; | |
617 | } | |
618 | ||
619 | /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ | |
e8deb28c B |
620 | sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid; |
621 | return add_numbered_child(sub_chip_id, "twl_reg", num, | |
dad759ff DB |
622 | pdata, sizeof(*pdata), false, 0, 0); |
623 | } | |
624 | ||
625 | static struct device * | |
626 | add_regulator(int num, struct regulator_init_data *pdata) | |
627 | { | |
628 | return add_regulator_linked(num, pdata, NULL, 0); | |
629 | } | |
630 | ||
5725d66b DB |
631 | /* |
632 | * NOTE: We know the first 8 IRQs after pdata->base_irq are | |
633 | * for the PIH, and the next are for the PWR_INT SIH, since | |
634 | * that's how twl_init_irq() sets things up. | |
635 | */ | |
a603a7fa | 636 | |
dad759ff DB |
637 | static int |
638 | add_children(struct twl4030_platform_data *pdata, unsigned long features) | |
5725d66b DB |
639 | { |
640 | struct device *child; | |
e8deb28c | 641 | unsigned sub_chip_id; |
a603a7fa | 642 | |
5725d66b | 643 | if (twl_has_gpio() && pdata->gpio) { |
fc7b92fc | 644 | child = add_child(SUB_CHIP_ID1, "twl4030_gpio", |
5725d66b | 645 | pdata->gpio, sizeof(*pdata->gpio), |
fc7b92fc | 646 | false, pdata->irq_base + GPIO_INTR_OFFSET, 0); |
5725d66b DB |
647 | if (IS_ERR(child)) |
648 | return PTR_ERR(child); | |
a603a7fa DB |
649 | } |
650 | ||
651 | if (twl_has_keypad() && pdata->keypad) { | |
fc7b92fc | 652 | child = add_child(SUB_CHIP_ID2, "twl4030_keypad", |
5725d66b | 653 | pdata->keypad, sizeof(*pdata->keypad), |
fc7b92fc | 654 | true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0); |
5725d66b DB |
655 | if (IS_ERR(child)) |
656 | return PTR_ERR(child); | |
a603a7fa DB |
657 | } |
658 | ||
659 | if (twl_has_madc() && pdata->madc) { | |
5725d66b DB |
660 | child = add_child(2, "twl4030_madc", |
661 | pdata->madc, sizeof(*pdata->madc), | |
fc7b92fc | 662 | true, pdata->irq_base + MADC_INTR_OFFSET, 0); |
5725d66b DB |
663 | if (IS_ERR(child)) |
664 | return PTR_ERR(child); | |
a603a7fa DB |
665 | } |
666 | ||
667 | if (twl_has_rtc()) { | |
a603a7fa | 668 | /* |
5725d66b | 669 | * REVISIT platform_data here currently might expose the |
a603a7fa | 670 | * "msecure" line ... but for now we just expect board |
5725d66b | 671 | * setup to tell the chip "it's always ok to SET_TIME". |
a603a7fa DB |
672 | * Eventually, Linux might become more aware of such |
673 | * HW security concerns, and "least privilege". | |
674 | */ | |
e8deb28c B |
675 | sub_chip_id = twl_map[TWL_MODULE_RTC].sid; |
676 | child = add_child(sub_chip_id, "twl_rtc", | |
5725d66b | 677 | NULL, 0, |
fc7b92fc | 678 | true, pdata->irq_base + RTC_INTR_OFFSET, 0); |
5725d66b DB |
679 | if (IS_ERR(child)) |
680 | return PTR_ERR(child); | |
a603a7fa DB |
681 | } |
682 | ||
9da66539 | 683 | if (twl_has_usb() && pdata->usb && twl_class_is_4030()) { |
f8ebdff0 RQ |
684 | |
685 | static struct regulator_consumer_supply usb1v5 = { | |
686 | .supply = "usb1v5", | |
687 | }; | |
688 | static struct regulator_consumer_supply usb1v8 = { | |
689 | .supply = "usb1v8", | |
690 | }; | |
691 | static struct regulator_consumer_supply usb3v1 = { | |
692 | .supply = "usb3v1", | |
693 | }; | |
694 | ||
695 | /* First add the regulators so that they can be used by transceiver */ | |
696 | if (twl_has_regulator()) { | |
697 | /* this is a template that gets copied */ | |
698 | struct regulator_init_data usb_fixed = { | |
699 | .constraints.valid_modes_mask = | |
700 | REGULATOR_MODE_NORMAL | |
701 | | REGULATOR_MODE_STANDBY, | |
702 | .constraints.valid_ops_mask = | |
703 | REGULATOR_CHANGE_MODE | |
704 | | REGULATOR_CHANGE_STATUS, | |
705 | }; | |
706 | ||
707 | child = add_regulator_linked(TWL4030_REG_VUSB1V5, | |
708 | &usb_fixed, &usb1v5, 1); | |
709 | if (IS_ERR(child)) | |
710 | return PTR_ERR(child); | |
711 | ||
712 | child = add_regulator_linked(TWL4030_REG_VUSB1V8, | |
713 | &usb_fixed, &usb1v8, 1); | |
714 | if (IS_ERR(child)) | |
715 | return PTR_ERR(child); | |
716 | ||
717 | child = add_regulator_linked(TWL4030_REG_VUSB3V1, | |
718 | &usb_fixed, &usb3v1, 1); | |
719 | if (IS_ERR(child)) | |
720 | return PTR_ERR(child); | |
721 | ||
722 | } | |
723 | ||
5725d66b DB |
724 | child = add_child(0, "twl4030_usb", |
725 | pdata->usb, sizeof(*pdata->usb), | |
726 | true, | |
727 | /* irq0 = USB_PRES, irq1 = USB */ | |
fc7b92fc B |
728 | pdata->irq_base + USB_PRES_INTR_OFFSET, |
729 | pdata->irq_base + USB_INTR_OFFSET); | |
f8ebdff0 | 730 | |
5725d66b DB |
731 | if (IS_ERR(child)) |
732 | return PTR_ERR(child); | |
dad759ff DB |
733 | |
734 | /* we need to connect regulators to this transceiver */ | |
f8ebdff0 RQ |
735 | if (twl_has_regulator() && child) { |
736 | usb1v5.dev = child; | |
737 | usb1v8.dev = child; | |
738 | usb3v1.dev = child; | |
739 | } | |
dad759ff | 740 | } |
e70357e3 HH |
741 | if (twl_has_usb() && pdata->usb && twl_class_is_6030()) { |
742 | ||
743 | static struct regulator_consumer_supply usb3v3 = { | |
744 | .supply = "vusb", | |
745 | }; | |
746 | ||
747 | if (twl_has_regulator()) { | |
748 | /* this is a template that gets copied */ | |
749 | struct regulator_init_data usb_fixed = { | |
750 | .constraints.valid_modes_mask = | |
751 | REGULATOR_MODE_NORMAL | |
752 | | REGULATOR_MODE_STANDBY, | |
753 | .constraints.valid_ops_mask = | |
754 | REGULATOR_CHANGE_MODE | |
755 | | REGULATOR_CHANGE_STATUS, | |
756 | }; | |
757 | ||
758 | child = add_regulator_linked(TWL6030_REG_VUSB, | |
759 | &usb_fixed, &usb3v3, 1); | |
760 | if (IS_ERR(child)) | |
761 | return PTR_ERR(child); | |
762 | } | |
763 | ||
764 | child = add_child(0, "twl6030_usb", | |
765 | pdata->usb, sizeof(*pdata->usb), | |
766 | true, | |
767 | /* irq1 = VBUS_PRES, irq0 = USB ID */ | |
768 | pdata->irq_base + USBOTG_INTR_OFFSET, | |
769 | pdata->irq_base + USB_PRES_INTR_OFFSET); | |
770 | ||
771 | if (IS_ERR(child)) | |
772 | return PTR_ERR(child); | |
773 | /* we need to connect regulators to this transceiver */ | |
774 | if (twl_has_regulator() && child) | |
775 | usb3v3.dev = child; | |
776 | ||
777 | } | |
dad759ff | 778 | |
153617fd | 779 | if (twl_has_watchdog() && twl_class_is_4030()) { |
80e45b1e TK |
780 | child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); |
781 | if (IS_ERR(child)) | |
9c3664dd FB |
782 | return PTR_ERR(child); |
783 | } | |
784 | ||
153617fd | 785 | if (twl_has_pwrbutton() && twl_class_is_4030()) { |
9c3664dd FB |
786 | child = add_child(1, "twl4030_pwrbutton", |
787 | NULL, 0, true, pdata->irq_base + 8 + 0, 0); | |
788 | if (IS_ERR(child)) | |
80e45b1e TK |
789 | return PTR_ERR(child); |
790 | } | |
791 | ||
d62abe56 MLC |
792 | if (twl_has_codec() && pdata->codec && twl_class_is_4030()) { |
793 | sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; | |
f0fba2ad | 794 | child = add_child(sub_chip_id, "twl4030-audio", |
d62abe56 MLC |
795 | pdata->codec, sizeof(*pdata->codec), |
796 | false, 0, 0); | |
797 | if (IS_ERR(child)) | |
798 | return PTR_ERR(child); | |
799 | } | |
800 | ||
f0fba2ad | 801 | /* Phoenix codec driver is probed directly atm */ |
d62abe56 MLC |
802 | if (twl_has_codec() && pdata->codec && twl_class_is_6030()) { |
803 | sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; | |
f0fba2ad | 804 | child = add_child(sub_chip_id, "twl6040-codec", |
0b83ddeb PU |
805 | pdata->codec, sizeof(*pdata->codec), |
806 | false, 0, 0); | |
807 | if (IS_ERR(child)) | |
808 | return PTR_ERR(child); | |
809 | } | |
810 | ||
9da66539 RN |
811 | /* twl4030 regulators */ |
812 | if (twl_has_regulator() && twl_class_is_4030()) { | |
dad759ff DB |
813 | child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1); |
814 | if (IS_ERR(child)) | |
815 | return PTR_ERR(child); | |
ab4abe05 JKS |
816 | |
817 | child = add_regulator(TWL4030_REG_VIO, pdata->vio); | |
818 | if (IS_ERR(child)) | |
819 | return PTR_ERR(child); | |
820 | ||
821 | child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1); | |
822 | if (IS_ERR(child)) | |
823 | return PTR_ERR(child); | |
824 | ||
825 | child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2); | |
826 | if (IS_ERR(child)) | |
827 | return PTR_ERR(child); | |
dad759ff DB |
828 | |
829 | child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1); | |
830 | if (IS_ERR(child)) | |
831 | return PTR_ERR(child); | |
832 | ||
833 | child = add_regulator(TWL4030_REG_VDAC, pdata->vdac); | |
834 | if (IS_ERR(child)) | |
835 | return PTR_ERR(child); | |
836 | ||
837 | child = add_regulator((features & TWL4030_VAUX2) | |
838 | ? TWL4030_REG_VAUX2_4030 | |
839 | : TWL4030_REG_VAUX2, | |
840 | pdata->vaux2); | |
841 | if (IS_ERR(child)) | |
842 | return PTR_ERR(child); | |
ab4abe05 JKS |
843 | |
844 | child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1); | |
845 | if (IS_ERR(child)) | |
846 | return PTR_ERR(child); | |
847 | ||
848 | child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2); | |
849 | if (IS_ERR(child)) | |
850 | return PTR_ERR(child); | |
851 | ||
852 | child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig); | |
853 | if (IS_ERR(child)) | |
854 | return PTR_ERR(child); | |
dad759ff DB |
855 | } |
856 | ||
dad759ff | 857 | /* maybe add LDOs that are omitted on cost-reduced parts */ |
9da66539 RN |
858 | if (twl_has_regulator() && !(features & TPS_SUBSET) |
859 | && twl_class_is_4030()) { | |
dad759ff DB |
860 | child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2); |
861 | if (IS_ERR(child)) | |
862 | return PTR_ERR(child); | |
dad759ff DB |
863 | |
864 | child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2); | |
865 | if (IS_ERR(child)) | |
866 | return PTR_ERR(child); | |
867 | ||
868 | child = add_regulator(TWL4030_REG_VSIM, pdata->vsim); | |
869 | if (IS_ERR(child)) | |
870 | return PTR_ERR(child); | |
871 | ||
872 | child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1); | |
873 | if (IS_ERR(child)) | |
874 | return PTR_ERR(child); | |
875 | ||
876 | child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3); | |
877 | if (IS_ERR(child)) | |
878 | return PTR_ERR(child); | |
879 | ||
880 | child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4); | |
881 | if (IS_ERR(child)) | |
882 | return PTR_ERR(child); | |
a603a7fa DB |
883 | } |
884 | ||
9da66539 RN |
885 | /* twl6030 regulators */ |
886 | if (twl_has_regulator() && twl_class_is_6030()) { | |
887 | child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc); | |
888 | if (IS_ERR(child)) | |
889 | return PTR_ERR(child); | |
890 | ||
891 | child = add_regulator(TWL6030_REG_VPP, pdata->vpp); | |
892 | if (IS_ERR(child)) | |
893 | return PTR_ERR(child); | |
894 | ||
895 | child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim); | |
896 | if (IS_ERR(child)) | |
897 | return PTR_ERR(child); | |
898 | ||
899 | child = add_regulator(TWL6030_REG_VANA, pdata->vana); | |
900 | if (IS_ERR(child)) | |
901 | return PTR_ERR(child); | |
902 | ||
903 | child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio); | |
904 | if (IS_ERR(child)) | |
905 | return PTR_ERR(child); | |
906 | ||
907 | child = add_regulator(TWL6030_REG_VDAC, pdata->vdac); | |
908 | if (IS_ERR(child)) | |
909 | return PTR_ERR(child); | |
910 | ||
9da66539 RN |
911 | child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1); |
912 | if (IS_ERR(child)) | |
913 | return PTR_ERR(child); | |
914 | ||
915 | child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2); | |
916 | if (IS_ERR(child)) | |
917 | return PTR_ERR(child); | |
918 | ||
919 | child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3); | |
920 | if (IS_ERR(child)) | |
921 | return PTR_ERR(child); | |
8e6de4a3 B |
922 | |
923 | child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg); | |
924 | if (IS_ERR(child)) | |
925 | return PTR_ERR(child); | |
9da66539 RN |
926 | } |
927 | ||
11c39c4b GI |
928 | if (twl_has_bci() && pdata->bci && |
929 | !(features & (TPS_SUBSET | TWL5031))) { | |
930 | child = add_child(3, "twl4030_bci", | |
931 | pdata->bci, sizeof(*pdata->bci), false, | |
932 | /* irq0 = CHG_PRES, irq1 = BCI */ | |
933 | pdata->irq_base + BCI_PRES_INTR_OFFSET, | |
934 | pdata->irq_base + BCI_INTR_OFFSET); | |
935 | if (IS_ERR(child)) | |
936 | return PTR_ERR(child); | |
937 | } | |
938 | ||
5725d66b | 939 | return 0; |
a603a7fa DB |
940 | } |
941 | ||
942 | /*----------------------------------------------------------------------*/ | |
943 | ||
944 | /* | |
945 | * These three functions initialize the on-chip clock framework, | |
946 | * letting it generate the right frequencies for USB, MADC, and | |
947 | * other purposes. | |
948 | */ | |
949 | static inline int __init protect_pm_master(void) | |
950 | { | |
951 | int e = 0; | |
952 | ||
49e6f87e FB |
953 | e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, |
954 | TWL4030_PM_MASTER_PROTECT_KEY); | |
a603a7fa DB |
955 | return e; |
956 | } | |
957 | ||
958 | static inline int __init unprotect_pm_master(void) | |
959 | { | |
960 | int e = 0; | |
961 | ||
49e6f87e FB |
962 | e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, |
963 | TWL4030_PM_MASTER_KEY_CFG1, | |
964 | TWL4030_PM_MASTER_PROTECT_KEY); | |
965 | e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, | |
966 | TWL4030_PM_MASTER_KEY_CFG2, | |
967 | TWL4030_PM_MASTER_PROTECT_KEY); | |
968 | ||
a603a7fa DB |
969 | return e; |
970 | } | |
971 | ||
38a68496 IK |
972 | static void clocks_init(struct device *dev, |
973 | struct twl4030_clock_init_data *clock) | |
a603a7fa DB |
974 | { |
975 | int e = 0; | |
976 | struct clk *osc; | |
977 | u32 rate; | |
978 | u8 ctrl = HFCLK_FREQ_26_MHZ; | |
979 | ||
980 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) | |
981 | if (cpu_is_omap2430()) | |
e6b50c8d | 982 | osc = clk_get(dev, "osc_ck"); |
a603a7fa | 983 | else |
e6b50c8d | 984 | osc = clk_get(dev, "osc_sys_ck"); |
6354ab5c | 985 | |
a603a7fa | 986 | if (IS_ERR(osc)) { |
fc7b92fc | 987 | printk(KERN_WARNING "Skipping twl internal clock init and " |
a603a7fa DB |
988 | "using bootloader value (unknown osc rate)\n"); |
989 | return; | |
990 | } | |
991 | ||
992 | rate = clk_get_rate(osc); | |
993 | clk_put(osc); | |
994 | ||
6354ab5c SO |
995 | #else |
996 | /* REVISIT for non-OMAP systems, pass the clock rate from | |
997 | * board init code, using platform_data. | |
998 | */ | |
999 | osc = ERR_PTR(-EIO); | |
1000 | ||
fc7b92fc | 1001 | printk(KERN_WARNING "Skipping twl internal clock init and " |
6354ab5c SO |
1002 | "using bootloader value (unknown osc rate)\n"); |
1003 | ||
1004 | return; | |
1005 | #endif | |
1006 | ||
a603a7fa DB |
1007 | switch (rate) { |
1008 | case 19200000: | |
1009 | ctrl = HFCLK_FREQ_19p2_MHZ; | |
1010 | break; | |
1011 | case 26000000: | |
1012 | ctrl = HFCLK_FREQ_26_MHZ; | |
1013 | break; | |
1014 | case 38400000: | |
1015 | ctrl = HFCLK_FREQ_38p4_MHZ; | |
1016 | break; | |
1017 | } | |
1018 | ||
1019 | ctrl |= HIGH_PERF_SQ; | |
38a68496 IK |
1020 | if (clock && clock->ck32k_lowpwr_enable) |
1021 | ctrl |= CK32K_LOWPWR_EN; | |
1022 | ||
a603a7fa DB |
1023 | e |= unprotect_pm_master(); |
1024 | /* effect->MADC+USB ck en */ | |
fc7b92fc | 1025 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); |
a603a7fa DB |
1026 | e |= protect_pm_master(); |
1027 | ||
1028 | if (e < 0) | |
1029 | pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); | |
1030 | } | |
1031 | ||
1032 | /*----------------------------------------------------------------------*/ | |
1033 | ||
e8deb28c B |
1034 | int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); |
1035 | int twl4030_exit_irq(void); | |
1036 | int twl4030_init_chip_irq(const char *chip); | |
1037 | int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); | |
1038 | int twl6030_exit_irq(void); | |
a603a7fa | 1039 | |
fc7b92fc | 1040 | static int twl_remove(struct i2c_client *client) |
a603a7fa DB |
1041 | { |
1042 | unsigned i; | |
a30d46c0 | 1043 | int status; |
a603a7fa | 1044 | |
e8deb28c B |
1045 | if (twl_class_is_4030()) |
1046 | status = twl4030_exit_irq(); | |
1047 | else | |
1048 | status = twl6030_exit_irq(); | |
1049 | ||
a30d46c0 DB |
1050 | if (status < 0) |
1051 | return status; | |
a603a7fa | 1052 | |
fc7b92fc B |
1053 | for (i = 0; i < TWL_NUM_SLAVES; i++) { |
1054 | struct twl_client *twl = &twl_modules[i]; | |
a603a7fa DB |
1055 | |
1056 | if (twl->client && twl->client != client) | |
1057 | i2c_unregister_device(twl->client); | |
fc7b92fc | 1058 | twl_modules[i].client = NULL; |
a603a7fa DB |
1059 | } |
1060 | inuse = false; | |
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | /* NOTE: this driver only handles a single twl4030/tps659x0 chip */ | |
5b9cecd6 | 1065 | static int __devinit |
fc7b92fc | 1066 | twl_probe(struct i2c_client *client, const struct i2c_device_id *id) |
a603a7fa DB |
1067 | { |
1068 | int status; | |
1069 | unsigned i; | |
1070 | struct twl4030_platform_data *pdata = client->dev.platform_data; | |
a29aaf55 | 1071 | u8 temp; |
ca972d13 | 1072 | int ret = 0; |
a603a7fa DB |
1073 | |
1074 | if (!pdata) { | |
1075 | dev_dbg(&client->dev, "no platform data?\n"); | |
1076 | return -EINVAL; | |
1077 | } | |
1078 | ||
1079 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { | |
1080 | dev_dbg(&client->dev, "can't talk I2C?\n"); | |
1081 | return -EIO; | |
1082 | } | |
1083 | ||
a30d46c0 | 1084 | if (inuse) { |
a603a7fa DB |
1085 | dev_dbg(&client->dev, "driver is already in use\n"); |
1086 | return -EBUSY; | |
1087 | } | |
1088 | ||
fc7b92fc B |
1089 | for (i = 0; i < TWL_NUM_SLAVES; i++) { |
1090 | struct twl_client *twl = &twl_modules[i]; | |
a603a7fa DB |
1091 | |
1092 | twl->address = client->addr + i; | |
1093 | if (i == 0) | |
1094 | twl->client = client; | |
1095 | else { | |
1096 | twl->client = i2c_new_dummy(client->adapter, | |
1097 | twl->address); | |
1098 | if (!twl->client) { | |
a8643430 | 1099 | dev_err(&client->dev, |
a603a7fa DB |
1100 | "can't attach client %d\n", i); |
1101 | status = -ENOMEM; | |
1102 | goto fail; | |
1103 | } | |
a603a7fa DB |
1104 | } |
1105 | mutex_init(&twl->xfer_lock); | |
1106 | } | |
1107 | inuse = true; | |
e8deb28c B |
1108 | if ((id->driver_data) & TWL6030_CLASS) { |
1109 | twl_id = TWL6030_CLASS_ID; | |
1110 | twl_map = &twl6030_map[0]; | |
1111 | } else { | |
1112 | twl_id = TWL4030_CLASS_ID; | |
1113 | twl_map = &twl4030_map[0]; | |
1114 | } | |
a603a7fa DB |
1115 | |
1116 | /* setup clock framework */ | |
38a68496 | 1117 | clocks_init(&client->dev, pdata->clock); |
a603a7fa | 1118 | |
ca972d13 L |
1119 | /* read TWL IDCODE Register */ |
1120 | if (twl_id == TWL4030_CLASS_ID) { | |
1121 | ret = twl_read_idcode_register(); | |
1122 | WARN(ret < 0, "Error: reading twl_idcode register value\n"); | |
1123 | } | |
1124 | ||
ebf0bd36 AK |
1125 | /* load power event scripts */ |
1126 | if (twl_has_power() && pdata->power) | |
1127 | twl4030_power_init(pdata->power); | |
1128 | ||
a603a7fa DB |
1129 | /* Maybe init the T2 Interrupt subsystem */ |
1130 | if (client->irq | |
1131 | && pdata->irq_base | |
1132 | && pdata->irq_end > pdata->irq_base) { | |
e8deb28c B |
1133 | if (twl_class_is_4030()) { |
1134 | twl4030_init_chip_irq(id->name); | |
1135 | status = twl4030_init_irq(client->irq, pdata->irq_base, | |
1136 | pdata->irq_end); | |
1137 | } else { | |
1138 | status = twl6030_init_irq(client->irq, pdata->irq_base, | |
1139 | pdata->irq_end); | |
1140 | } | |
1141 | ||
a30d46c0 DB |
1142 | if (status < 0) |
1143 | goto fail; | |
a603a7fa DB |
1144 | } |
1145 | ||
a29aaf55 MS |
1146 | /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. |
1147 | * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, | |
1148 | * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. | |
1149 | */ | |
1150 | ||
1151 | if (twl_class_is_4030()) { | |
1152 | twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); | |
1153 | temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ | |
1154 | I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); | |
1155 | twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); | |
1156 | } | |
1157 | ||
dad759ff | 1158 | status = add_children(pdata, id->driver_data); |
a603a7fa DB |
1159 | fail: |
1160 | if (status < 0) | |
fc7b92fc | 1161 | twl_remove(client); |
a603a7fa DB |
1162 | return status; |
1163 | } | |
1164 | ||
fc7b92fc | 1165 | static const struct i2c_device_id twl_ids[] = { |
dad759ff DB |
1166 | { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ |
1167 | { "twl5030", 0 }, /* T2 updated */ | |
1920a61e | 1168 | { "twl5031", TWL5031 }, /* TWL5030 updated */ |
dad759ff DB |
1169 | { "tps65950", 0 }, /* catalog version of twl5030 */ |
1170 | { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ | |
1171 | { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ | |
e8deb28c | 1172 | { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ |
a603a7fa DB |
1173 | { /* end of list */ }, |
1174 | }; | |
fc7b92fc | 1175 | MODULE_DEVICE_TABLE(i2c, twl_ids); |
a603a7fa DB |
1176 | |
1177 | /* One Client Driver , 4 Clients */ | |
fc7b92fc | 1178 | static struct i2c_driver twl_driver = { |
a603a7fa | 1179 | .driver.name = DRIVER_NAME, |
fc7b92fc B |
1180 | .id_table = twl_ids, |
1181 | .probe = twl_probe, | |
1182 | .remove = twl_remove, | |
a603a7fa DB |
1183 | }; |
1184 | ||
fc7b92fc | 1185 | static int __init twl_init(void) |
a603a7fa | 1186 | { |
fc7b92fc | 1187 | return i2c_add_driver(&twl_driver); |
a603a7fa | 1188 | } |
fc7b92fc | 1189 | subsys_initcall(twl_init); |
a603a7fa | 1190 | |
fc7b92fc | 1191 | static void __exit twl_exit(void) |
a603a7fa | 1192 | { |
fc7b92fc | 1193 | i2c_del_driver(&twl_driver); |
a603a7fa | 1194 | } |
fc7b92fc | 1195 | module_exit(twl_exit); |
a603a7fa DB |
1196 | |
1197 | MODULE_AUTHOR("Texas Instruments, Inc."); | |
fc7b92fc | 1198 | MODULE_DESCRIPTION("I2C Core interface for TWL"); |
a603a7fa | 1199 | MODULE_LICENSE("GPL"); |