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 | ||
98 | #if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE) | |
99 | #define twl_has_usb() true | |
100 | #else | |
101 | #define twl_has_usb() false | |
102 | #endif | |
103 | ||
80e45b1e TK |
104 | #if defined(CONFIG_TWL4030_WATCHDOG) || \ |
105 | defined(CONFIG_TWL4030_WATCHDOG_MODULE) | |
106 | #define twl_has_watchdog() true | |
107 | #else | |
108 | #define twl_has_watchdog() false | |
109 | #endif | |
a603a7fa | 110 | |
d62abe56 | 111 | #if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\ |
6a1c7b7e | 112 | defined(CONFIG_SND_SOC_TWL6040) || defined(CONFIG_SND_SOC_TWL6040_MODULE) |
0b83ddeb PU |
113 | #define twl_has_codec() true |
114 | #else | |
115 | #define twl_has_codec() false | |
116 | #endif | |
117 | ||
a603a7fa DB |
118 | /* Triton Core internal information (BEGIN) */ |
119 | ||
120 | /* Last - for index max*/ | |
121 | #define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG | |
122 | ||
fc7b92fc | 123 | #define TWL_NUM_SLAVES 4 |
a603a7fa | 124 | |
9c3664dd | 125 | #if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \ |
14e5c82c | 126 | || defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE) |
9c3664dd FB |
127 | #define twl_has_pwrbutton() true |
128 | #else | |
129 | #define twl_has_pwrbutton() false | |
130 | #endif | |
a603a7fa | 131 | |
fc7b92fc B |
132 | #define SUB_CHIP_ID0 0 |
133 | #define SUB_CHIP_ID1 1 | |
134 | #define SUB_CHIP_ID2 2 | |
135 | #define SUB_CHIP_ID3 3 | |
136 | ||
137 | #define TWL_MODULE_LAST TWL4030_MODULE_LAST | |
138 | ||
a603a7fa DB |
139 | /* Base Address defns for twl4030_map[] */ |
140 | ||
141 | /* subchip/slave 0 - USB ID */ | |
142 | #define TWL4030_BASEADD_USB 0x0000 | |
143 | ||
144 | /* subchip/slave 1 - AUD ID */ | |
145 | #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 | |
146 | #define TWL4030_BASEADD_GPIO 0x0098 | |
147 | #define TWL4030_BASEADD_INTBR 0x0085 | |
148 | #define TWL4030_BASEADD_PIH 0x0080 | |
149 | #define TWL4030_BASEADD_TEST 0x004C | |
150 | ||
151 | /* subchip/slave 2 - AUX ID */ | |
152 | #define TWL4030_BASEADD_INTERRUPTS 0x00B9 | |
153 | #define TWL4030_BASEADD_LED 0x00EE | |
154 | #define TWL4030_BASEADD_MADC 0x0000 | |
155 | #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 | |
156 | #define TWL4030_BASEADD_PRECHARGE 0x00AA | |
157 | #define TWL4030_BASEADD_PWM0 0x00F8 | |
158 | #define TWL4030_BASEADD_PWM1 0x00FB | |
159 | #define TWL4030_BASEADD_PWMA 0x00EF | |
160 | #define TWL4030_BASEADD_PWMB 0x00F1 | |
161 | #define TWL4030_BASEADD_KEYPAD 0x00D2 | |
162 | ||
1920a61e IK |
163 | #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ |
164 | #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's | |
165 | one */ | |
166 | ||
a603a7fa DB |
167 | /* subchip/slave 3 - POWER ID */ |
168 | #define TWL4030_BASEADD_BACKUP 0x0014 | |
169 | #define TWL4030_BASEADD_INT 0x002E | |
170 | #define TWL4030_BASEADD_PM_MASTER 0x0036 | |
171 | #define TWL4030_BASEADD_PM_RECEIVER 0x005B | |
172 | #define TWL4030_BASEADD_RTC 0x001C | |
173 | #define TWL4030_BASEADD_SECURED_REG 0x0000 | |
174 | ||
175 | /* Triton Core internal information (END) */ | |
176 | ||
177 | ||
e8deb28c B |
178 | /* subchip/slave 0 0x48 - POWER */ |
179 | #define TWL6030_BASEADD_RTC 0x0000 | |
180 | #define TWL6030_BASEADD_MEM 0x0017 | |
181 | #define TWL6030_BASEADD_PM_MASTER 0x001F | |
182 | #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ | |
183 | #define TWL6030_BASEADD_PM_MISC 0x00E2 | |
184 | #define TWL6030_BASEADD_PM_PUPD 0x00F0 | |
185 | ||
186 | /* subchip/slave 1 0x49 - FEATURE */ | |
187 | #define TWL6030_BASEADD_USB 0x0000 | |
188 | #define TWL6030_BASEADD_GPADC_CTRL 0x002E | |
189 | #define TWL6030_BASEADD_AUX 0x0090 | |
190 | #define TWL6030_BASEADD_PWM 0x00BA | |
191 | #define TWL6030_BASEADD_GASGAUGE 0x00C0 | |
192 | #define TWL6030_BASEADD_PIH 0x00D0 | |
193 | #define TWL6030_BASEADD_CHARGER 0x00E0 | |
194 | ||
195 | /* subchip/slave 2 0x4A - DFT */ | |
196 | #define TWL6030_BASEADD_DIEID 0x00C0 | |
197 | ||
198 | /* subchip/slave 3 0x4B - AUDIO */ | |
199 | #define TWL6030_BASEADD_AUDIO 0x0000 | |
200 | #define TWL6030_BASEADD_RSV 0x0000 | |
fa0d9762 | 201 | #define TWL6030_BASEADD_ZERO 0x0000 |
e8deb28c | 202 | |
a603a7fa DB |
203 | /* Few power values */ |
204 | #define R_CFG_BOOT 0x05 | |
a603a7fa DB |
205 | |
206 | /* some fields in R_CFG_BOOT */ | |
207 | #define HFCLK_FREQ_19p2_MHZ (1 << 0) | |
208 | #define HFCLK_FREQ_26_MHZ (2 << 0) | |
209 | #define HFCLK_FREQ_38p4_MHZ (3 << 0) | |
210 | #define HIGH_PERF_SQ (1 << 3) | |
38a68496 | 211 | #define CK32K_LOWPWR_EN (1 << 7) |
a603a7fa DB |
212 | |
213 | ||
dad759ff DB |
214 | /* chip-specific feature flags, for i2c_device_id.driver_data */ |
215 | #define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */ | |
216 | #define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */ | |
1920a61e | 217 | #define TWL5031 BIT(2) /* twl5031 has different registers */ |
e8deb28c | 218 | #define TWL6030_CLASS BIT(3) /* TWL6030 class */ |
dad759ff | 219 | |
a603a7fa DB |
220 | /*----------------------------------------------------------------------*/ |
221 | ||
a603a7fa DB |
222 | /* is driver active, bound to a chip? */ |
223 | static bool inuse; | |
224 | ||
e8deb28c B |
225 | static unsigned int twl_id; |
226 | unsigned int twl_rev(void) | |
227 | { | |
228 | return twl_id; | |
229 | } | |
230 | EXPORT_SYMBOL(twl_rev); | |
231 | ||
232 | /* Structure for each TWL4030/TWL6030 Slave */ | |
fc7b92fc | 233 | struct twl_client { |
a603a7fa DB |
234 | struct i2c_client *client; |
235 | u8 address; | |
236 | ||
237 | /* max numb of i2c_msg required is for read =2 */ | |
238 | struct i2c_msg xfer_msg[2]; | |
239 | ||
240 | /* To lock access to xfer_msg */ | |
241 | struct mutex xfer_lock; | |
242 | }; | |
243 | ||
fc7b92fc | 244 | static struct twl_client twl_modules[TWL_NUM_SLAVES]; |
a603a7fa DB |
245 | |
246 | ||
247 | /* mapping the module id to slave id and base address */ | |
fc7b92fc | 248 | struct twl_mapping { |
a603a7fa DB |
249 | unsigned char sid; /* Slave ID */ |
250 | unsigned char base; /* base address */ | |
251 | }; | |
e8deb28c | 252 | struct twl_mapping *twl_map; |
a603a7fa | 253 | |
fc7b92fc | 254 | static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = { |
a603a7fa DB |
255 | /* |
256 | * NOTE: don't change this table without updating the | |
e8deb28c | 257 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
a603a7fa DB |
258 | * so they continue to match the order in this table. |
259 | */ | |
260 | ||
261 | { 0, TWL4030_BASEADD_USB }, | |
262 | ||
263 | { 1, TWL4030_BASEADD_AUDIO_VOICE }, | |
264 | { 1, TWL4030_BASEADD_GPIO }, | |
265 | { 1, TWL4030_BASEADD_INTBR }, | |
266 | { 1, TWL4030_BASEADD_PIH }, | |
267 | { 1, TWL4030_BASEADD_TEST }, | |
268 | ||
269 | { 2, TWL4030_BASEADD_KEYPAD }, | |
270 | { 2, TWL4030_BASEADD_MADC }, | |
271 | { 2, TWL4030_BASEADD_INTERRUPTS }, | |
272 | { 2, TWL4030_BASEADD_LED }, | |
273 | { 2, TWL4030_BASEADD_MAIN_CHARGE }, | |
274 | { 2, TWL4030_BASEADD_PRECHARGE }, | |
275 | { 2, TWL4030_BASEADD_PWM0 }, | |
276 | { 2, TWL4030_BASEADD_PWM1 }, | |
277 | { 2, TWL4030_BASEADD_PWMA }, | |
278 | { 2, TWL4030_BASEADD_PWMB }, | |
1920a61e IK |
279 | { 2, TWL5031_BASEADD_ACCESSORY }, |
280 | { 2, TWL5031_BASEADD_INTERRUPTS }, | |
a603a7fa DB |
281 | |
282 | { 3, TWL4030_BASEADD_BACKUP }, | |
283 | { 3, TWL4030_BASEADD_INT }, | |
284 | { 3, TWL4030_BASEADD_PM_MASTER }, | |
285 | { 3, TWL4030_BASEADD_PM_RECEIVER }, | |
286 | { 3, TWL4030_BASEADD_RTC }, | |
287 | { 3, TWL4030_BASEADD_SECURED_REG }, | |
288 | }; | |
289 | ||
e8deb28c B |
290 | static struct twl_mapping twl6030_map[] = { |
291 | /* | |
292 | * NOTE: don't change this table without updating the | |
293 | * <linux/i2c/twl.h> defines for TWL4030_MODULE_* | |
294 | * so they continue to match the order in this table. | |
295 | */ | |
296 | { SUB_CHIP_ID1, TWL6030_BASEADD_USB }, | |
297 | { SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO }, | |
298 | { SUB_CHIP_ID2, TWL6030_BASEADD_DIEID }, | |
299 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
300 | { SUB_CHIP_ID1, TWL6030_BASEADD_PIH }, | |
301 | ||
302 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
303 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
304 | { SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL }, | |
305 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
306 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
307 | ||
308 | { SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER }, | |
309 | { SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE }, | |
310 | { SUB_CHIP_ID1, TWL6030_BASEADD_PWM }, | |
fa0d9762 B |
311 | { SUB_CHIP_ID0, TWL6030_BASEADD_ZERO }, |
312 | { SUB_CHIP_ID1, TWL6030_BASEADD_ZERO }, | |
e8deb28c | 313 | |
fa0d9762 B |
314 | { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, |
315 | { SUB_CHIP_ID2, TWL6030_BASEADD_ZERO }, | |
e8deb28c B |
316 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, |
317 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
318 | { SUB_CHIP_ID2, TWL6030_BASEADD_RSV }, | |
319 | { SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER }, | |
320 | { SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC }, | |
321 | ||
322 | { SUB_CHIP_ID0, TWL6030_BASEADD_RTC }, | |
323 | { SUB_CHIP_ID0, TWL6030_BASEADD_MEM }, | |
324 | }; | |
325 | ||
a603a7fa DB |
326 | /*----------------------------------------------------------------------*/ |
327 | ||
a603a7fa DB |
328 | /* Exported Functions */ |
329 | ||
330 | /** | |
fc7b92fc | 331 | * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
332 | * @mod_no: module number |
333 | * @value: an array of num_bytes+1 containing data to write | |
334 | * @reg: register address (just offset will do) | |
335 | * @num_bytes: number of bytes to transfer | |
336 | * | |
337 | * IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and | |
338 | * valid data starts at Offset 1. | |
339 | * | |
340 | * Returns the result of operation - 0 is success | |
341 | */ | |
fc7b92fc | 342 | int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
343 | { |
344 | int ret; | |
345 | int sid; | |
fc7b92fc | 346 | struct twl_client *twl; |
a603a7fa DB |
347 | struct i2c_msg *msg; |
348 | ||
fc7b92fc | 349 | if (unlikely(mod_no > TWL_MODULE_LAST)) { |
a603a7fa DB |
350 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
351 | return -EPERM; | |
352 | } | |
e8deb28c | 353 | sid = twl_map[mod_no].sid; |
fc7b92fc | 354 | twl = &twl_modules[sid]; |
a603a7fa DB |
355 | |
356 | if (unlikely(!inuse)) { | |
357 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
358 | return -EPERM; | |
359 | } | |
360 | mutex_lock(&twl->xfer_lock); | |
361 | /* | |
362 | * [MSG1]: fill the register address data | |
363 | * fill the data Tx buffer | |
364 | */ | |
365 | msg = &twl->xfer_msg[0]; | |
366 | msg->addr = twl->address; | |
367 | msg->len = num_bytes + 1; | |
368 | msg->flags = 0; | |
369 | msg->buf = value; | |
370 | /* over write the first byte of buffer with the register address */ | |
e8deb28c | 371 | *value = twl_map[mod_no].base + reg; |
a603a7fa DB |
372 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1); |
373 | mutex_unlock(&twl->xfer_lock); | |
374 | ||
147e0847 AK |
375 | /* i2c_transfer returns number of messages transferred */ |
376 | if (ret != 1) { | |
377 | pr_err("%s: i2c_write failed to transfer all messages\n", | |
378 | DRIVER_NAME); | |
379 | if (ret < 0) | |
380 | return ret; | |
381 | else | |
382 | return -EIO; | |
383 | } else { | |
384 | return 0; | |
385 | } | |
a603a7fa | 386 | } |
fc7b92fc | 387 | EXPORT_SYMBOL(twl_i2c_write); |
a603a7fa DB |
388 | |
389 | /** | |
fc7b92fc | 390 | * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
391 | * @mod_no: module number |
392 | * @value: an array of num_bytes containing data to be read | |
393 | * @reg: register address (just offset will do) | |
394 | * @num_bytes: number of bytes to transfer | |
395 | * | |
396 | * Returns result of operation - num_bytes is success else failure. | |
397 | */ | |
fc7b92fc | 398 | int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
a603a7fa DB |
399 | { |
400 | int ret; | |
401 | u8 val; | |
402 | int sid; | |
fc7b92fc | 403 | struct twl_client *twl; |
a603a7fa DB |
404 | struct i2c_msg *msg; |
405 | ||
fc7b92fc | 406 | if (unlikely(mod_no > TWL_MODULE_LAST)) { |
a603a7fa DB |
407 | pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
408 | return -EPERM; | |
409 | } | |
e8deb28c | 410 | sid = twl_map[mod_no].sid; |
fc7b92fc | 411 | twl = &twl_modules[sid]; |
a603a7fa DB |
412 | |
413 | if (unlikely(!inuse)) { | |
414 | pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid); | |
415 | return -EPERM; | |
416 | } | |
417 | mutex_lock(&twl->xfer_lock); | |
418 | /* [MSG1] fill the register address data */ | |
419 | msg = &twl->xfer_msg[0]; | |
420 | msg->addr = twl->address; | |
421 | msg->len = 1; | |
422 | msg->flags = 0; /* Read the register value */ | |
e8deb28c | 423 | val = twl_map[mod_no].base + reg; |
a603a7fa DB |
424 | msg->buf = &val; |
425 | /* [MSG2] fill the data rx buffer */ | |
426 | msg = &twl->xfer_msg[1]; | |
427 | msg->addr = twl->address; | |
428 | msg->flags = I2C_M_RD; /* Read the register value */ | |
429 | msg->len = num_bytes; /* only n bytes */ | |
430 | msg->buf = value; | |
431 | ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2); | |
432 | mutex_unlock(&twl->xfer_lock); | |
433 | ||
147e0847 AK |
434 | /* i2c_transfer returns number of messages transferred */ |
435 | if (ret != 2) { | |
436 | pr_err("%s: i2c_read failed to transfer all messages\n", | |
437 | DRIVER_NAME); | |
438 | if (ret < 0) | |
439 | return ret; | |
440 | else | |
441 | return -EIO; | |
442 | } else { | |
443 | return 0; | |
444 | } | |
a603a7fa | 445 | } |
fc7b92fc | 446 | EXPORT_SYMBOL(twl_i2c_read); |
a603a7fa DB |
447 | |
448 | /** | |
fc7b92fc | 449 | * twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
450 | * @mod_no: module number |
451 | * @value: the value to be written 8 bit | |
452 | * @reg: register address (just offset will do) | |
453 | * | |
454 | * Returns result of operation - 0 is success | |
455 | */ | |
fc7b92fc | 456 | int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg) |
a603a7fa DB |
457 | { |
458 | ||
459 | /* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */ | |
460 | u8 temp_buffer[2] = { 0 }; | |
461 | /* offset 1 contains the data */ | |
462 | temp_buffer[1] = value; | |
fc7b92fc | 463 | return twl_i2c_write(mod_no, temp_buffer, reg, 1); |
a603a7fa | 464 | } |
fc7b92fc | 465 | EXPORT_SYMBOL(twl_i2c_write_u8); |
a603a7fa DB |
466 | |
467 | /** | |
fc7b92fc | 468 | * twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0 |
a603a7fa DB |
469 | * @mod_no: module number |
470 | * @value: the value read 8 bit | |
471 | * @reg: register address (just offset will do) | |
472 | * | |
473 | * Returns result of operation - 0 is success | |
474 | */ | |
fc7b92fc | 475 | int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg) |
a603a7fa | 476 | { |
fc7b92fc | 477 | return twl_i2c_read(mod_no, value, reg, 1); |
a603a7fa | 478 | } |
fc7b92fc | 479 | EXPORT_SYMBOL(twl_i2c_read_u8); |
a603a7fa DB |
480 | |
481 | /*----------------------------------------------------------------------*/ | |
482 | ||
dad759ff DB |
483 | static struct device * |
484 | add_numbered_child(unsigned chip, const char *name, int num, | |
5725d66b DB |
485 | void *pdata, unsigned pdata_len, |
486 | bool can_wakeup, int irq0, int irq1) | |
a603a7fa | 487 | { |
5725d66b | 488 | struct platform_device *pdev; |
fc7b92fc | 489 | struct twl_client *twl = &twl_modules[chip]; |
5725d66b DB |
490 | int status; |
491 | ||
dad759ff | 492 | pdev = platform_device_alloc(name, num); |
5725d66b DB |
493 | if (!pdev) { |
494 | dev_dbg(&twl->client->dev, "can't alloc dev\n"); | |
495 | status = -ENOMEM; | |
496 | goto err; | |
497 | } | |
a603a7fa | 498 | |
5725d66b DB |
499 | device_init_wakeup(&pdev->dev, can_wakeup); |
500 | pdev->dev.parent = &twl->client->dev; | |
a603a7fa | 501 | |
5725d66b DB |
502 | if (pdata) { |
503 | status = platform_device_add_data(pdev, pdata, pdata_len); | |
504 | if (status < 0) { | |
505 | dev_dbg(&pdev->dev, "can't add platform_data\n"); | |
a603a7fa DB |
506 | goto err; |
507 | } | |
5725d66b | 508 | } |
a603a7fa | 509 | |
5725d66b DB |
510 | if (irq0) { |
511 | struct resource r[2] = { | |
512 | { .start = irq0, .flags = IORESOURCE_IRQ, }, | |
513 | { .start = irq1, .flags = IORESOURCE_IRQ, }, | |
514 | }; | |
a603a7fa | 515 | |
5725d66b | 516 | status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); |
a603a7fa | 517 | if (status < 0) { |
5725d66b | 518 | dev_dbg(&pdev->dev, "can't add irqs\n"); |
a603a7fa DB |
519 | goto err; |
520 | } | |
521 | } | |
522 | ||
5725d66b | 523 | status = platform_device_add(pdev); |
a603a7fa | 524 | |
5725d66b DB |
525 | err: |
526 | if (status < 0) { | |
527 | platform_device_put(pdev); | |
528 | dev_err(&twl->client->dev, "can't add %s dev\n", name); | |
529 | return ERR_PTR(status); | |
530 | } | |
531 | return &pdev->dev; | |
532 | } | |
a603a7fa | 533 | |
dad759ff DB |
534 | static inline struct device *add_child(unsigned chip, const char *name, |
535 | void *pdata, unsigned pdata_len, | |
536 | bool can_wakeup, int irq0, int irq1) | |
537 | { | |
538 | return add_numbered_child(chip, name, -1, pdata, pdata_len, | |
539 | can_wakeup, irq0, irq1); | |
540 | } | |
541 | ||
542 | static struct device * | |
543 | add_regulator_linked(int num, struct regulator_init_data *pdata, | |
544 | struct regulator_consumer_supply *consumers, | |
545 | unsigned num_consumers) | |
546 | { | |
e8deb28c | 547 | unsigned sub_chip_id; |
dad759ff DB |
548 | /* regulator framework demands init_data ... */ |
549 | if (!pdata) | |
550 | return NULL; | |
551 | ||
b73eac78 | 552 | if (consumers) { |
dad759ff DB |
553 | pdata->consumer_supplies = consumers; |
554 | pdata->num_consumer_supplies = num_consumers; | |
555 | } | |
556 | ||
557 | /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ | |
e8deb28c B |
558 | sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid; |
559 | return add_numbered_child(sub_chip_id, "twl_reg", num, | |
dad759ff DB |
560 | pdata, sizeof(*pdata), false, 0, 0); |
561 | } | |
562 | ||
563 | static struct device * | |
564 | add_regulator(int num, struct regulator_init_data *pdata) | |
565 | { | |
566 | return add_regulator_linked(num, pdata, NULL, 0); | |
567 | } | |
568 | ||
5725d66b DB |
569 | /* |
570 | * NOTE: We know the first 8 IRQs after pdata->base_irq are | |
571 | * for the PIH, and the next are for the PWR_INT SIH, since | |
572 | * that's how twl_init_irq() sets things up. | |
573 | */ | |
a603a7fa | 574 | |
dad759ff DB |
575 | static int |
576 | add_children(struct twl4030_platform_data *pdata, unsigned long features) | |
5725d66b DB |
577 | { |
578 | struct device *child; | |
e8deb28c | 579 | unsigned sub_chip_id; |
a603a7fa | 580 | |
5725d66b | 581 | if (twl_has_gpio() && pdata->gpio) { |
fc7b92fc | 582 | child = add_child(SUB_CHIP_ID1, "twl4030_gpio", |
5725d66b | 583 | pdata->gpio, sizeof(*pdata->gpio), |
fc7b92fc | 584 | false, pdata->irq_base + GPIO_INTR_OFFSET, 0); |
5725d66b DB |
585 | if (IS_ERR(child)) |
586 | return PTR_ERR(child); | |
a603a7fa DB |
587 | } |
588 | ||
589 | if (twl_has_keypad() && pdata->keypad) { | |
fc7b92fc | 590 | child = add_child(SUB_CHIP_ID2, "twl4030_keypad", |
5725d66b | 591 | pdata->keypad, sizeof(*pdata->keypad), |
fc7b92fc | 592 | true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0); |
5725d66b DB |
593 | if (IS_ERR(child)) |
594 | return PTR_ERR(child); | |
a603a7fa DB |
595 | } |
596 | ||
597 | if (twl_has_madc() && pdata->madc) { | |
5725d66b DB |
598 | child = add_child(2, "twl4030_madc", |
599 | pdata->madc, sizeof(*pdata->madc), | |
fc7b92fc | 600 | true, pdata->irq_base + MADC_INTR_OFFSET, 0); |
5725d66b DB |
601 | if (IS_ERR(child)) |
602 | return PTR_ERR(child); | |
a603a7fa DB |
603 | } |
604 | ||
605 | if (twl_has_rtc()) { | |
a603a7fa | 606 | /* |
5725d66b | 607 | * REVISIT platform_data here currently might expose the |
a603a7fa | 608 | * "msecure" line ... but for now we just expect board |
5725d66b | 609 | * setup to tell the chip "it's always ok to SET_TIME". |
a603a7fa DB |
610 | * Eventually, Linux might become more aware of such |
611 | * HW security concerns, and "least privilege". | |
612 | */ | |
e8deb28c B |
613 | sub_chip_id = twl_map[TWL_MODULE_RTC].sid; |
614 | child = add_child(sub_chip_id, "twl_rtc", | |
5725d66b | 615 | NULL, 0, |
fc7b92fc | 616 | true, pdata->irq_base + RTC_INTR_OFFSET, 0); |
5725d66b DB |
617 | if (IS_ERR(child)) |
618 | return PTR_ERR(child); | |
a603a7fa DB |
619 | } |
620 | ||
9da66539 | 621 | if (twl_has_usb() && pdata->usb && twl_class_is_4030()) { |
f8ebdff0 RQ |
622 | |
623 | static struct regulator_consumer_supply usb1v5 = { | |
624 | .supply = "usb1v5", | |
625 | }; | |
626 | static struct regulator_consumer_supply usb1v8 = { | |
627 | .supply = "usb1v8", | |
628 | }; | |
629 | static struct regulator_consumer_supply usb3v1 = { | |
630 | .supply = "usb3v1", | |
631 | }; | |
632 | ||
633 | /* First add the regulators so that they can be used by transceiver */ | |
634 | if (twl_has_regulator()) { | |
635 | /* this is a template that gets copied */ | |
636 | struct regulator_init_data usb_fixed = { | |
637 | .constraints.valid_modes_mask = | |
638 | REGULATOR_MODE_NORMAL | |
639 | | REGULATOR_MODE_STANDBY, | |
640 | .constraints.valid_ops_mask = | |
641 | REGULATOR_CHANGE_MODE | |
642 | | REGULATOR_CHANGE_STATUS, | |
643 | }; | |
644 | ||
645 | child = add_regulator_linked(TWL4030_REG_VUSB1V5, | |
646 | &usb_fixed, &usb1v5, 1); | |
647 | if (IS_ERR(child)) | |
648 | return PTR_ERR(child); | |
649 | ||
650 | child = add_regulator_linked(TWL4030_REG_VUSB1V8, | |
651 | &usb_fixed, &usb1v8, 1); | |
652 | if (IS_ERR(child)) | |
653 | return PTR_ERR(child); | |
654 | ||
655 | child = add_regulator_linked(TWL4030_REG_VUSB3V1, | |
656 | &usb_fixed, &usb3v1, 1); | |
657 | if (IS_ERR(child)) | |
658 | return PTR_ERR(child); | |
659 | ||
660 | } | |
661 | ||
5725d66b DB |
662 | child = add_child(0, "twl4030_usb", |
663 | pdata->usb, sizeof(*pdata->usb), | |
664 | true, | |
665 | /* irq0 = USB_PRES, irq1 = USB */ | |
fc7b92fc B |
666 | pdata->irq_base + USB_PRES_INTR_OFFSET, |
667 | pdata->irq_base + USB_INTR_OFFSET); | |
f8ebdff0 | 668 | |
5725d66b DB |
669 | if (IS_ERR(child)) |
670 | return PTR_ERR(child); | |
dad759ff DB |
671 | |
672 | /* we need to connect regulators to this transceiver */ | |
f8ebdff0 RQ |
673 | if (twl_has_regulator() && child) { |
674 | usb1v5.dev = child; | |
675 | usb1v8.dev = child; | |
676 | usb3v1.dev = child; | |
677 | } | |
dad759ff DB |
678 | } |
679 | ||
80e45b1e TK |
680 | if (twl_has_watchdog()) { |
681 | child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0); | |
682 | if (IS_ERR(child)) | |
9c3664dd FB |
683 | return PTR_ERR(child); |
684 | } | |
685 | ||
686 | if (twl_has_pwrbutton()) { | |
687 | child = add_child(1, "twl4030_pwrbutton", | |
688 | NULL, 0, true, pdata->irq_base + 8 + 0, 0); | |
689 | if (IS_ERR(child)) | |
80e45b1e TK |
690 | return PTR_ERR(child); |
691 | } | |
692 | ||
d62abe56 MLC |
693 | if (twl_has_codec() && pdata->codec && twl_class_is_4030()) { |
694 | sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; | |
f0fba2ad | 695 | child = add_child(sub_chip_id, "twl4030-audio", |
d62abe56 MLC |
696 | pdata->codec, sizeof(*pdata->codec), |
697 | false, 0, 0); | |
698 | if (IS_ERR(child)) | |
699 | return PTR_ERR(child); | |
700 | } | |
701 | ||
f0fba2ad | 702 | /* Phoenix codec driver is probed directly atm */ |
d62abe56 MLC |
703 | if (twl_has_codec() && pdata->codec && twl_class_is_6030()) { |
704 | sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid; | |
f0fba2ad | 705 | child = add_child(sub_chip_id, "twl6040-codec", |
0b83ddeb PU |
706 | pdata->codec, sizeof(*pdata->codec), |
707 | false, 0, 0); | |
708 | if (IS_ERR(child)) | |
709 | return PTR_ERR(child); | |
710 | } | |
711 | ||
9da66539 RN |
712 | /* twl4030 regulators */ |
713 | if (twl_has_regulator() && twl_class_is_4030()) { | |
dad759ff DB |
714 | child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1); |
715 | if (IS_ERR(child)) | |
716 | return PTR_ERR(child); | |
ab4abe05 JKS |
717 | |
718 | child = add_regulator(TWL4030_REG_VIO, pdata->vio); | |
719 | if (IS_ERR(child)) | |
720 | return PTR_ERR(child); | |
721 | ||
722 | child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1); | |
723 | if (IS_ERR(child)) | |
724 | return PTR_ERR(child); | |
725 | ||
726 | child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2); | |
727 | if (IS_ERR(child)) | |
728 | return PTR_ERR(child); | |
dad759ff DB |
729 | |
730 | child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1); | |
731 | if (IS_ERR(child)) | |
732 | return PTR_ERR(child); | |
733 | ||
734 | child = add_regulator(TWL4030_REG_VDAC, pdata->vdac); | |
735 | if (IS_ERR(child)) | |
736 | return PTR_ERR(child); | |
737 | ||
738 | child = add_regulator((features & TWL4030_VAUX2) | |
739 | ? TWL4030_REG_VAUX2_4030 | |
740 | : TWL4030_REG_VAUX2, | |
741 | pdata->vaux2); | |
742 | if (IS_ERR(child)) | |
743 | return PTR_ERR(child); | |
ab4abe05 JKS |
744 | |
745 | child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1); | |
746 | if (IS_ERR(child)) | |
747 | return PTR_ERR(child); | |
748 | ||
749 | child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2); | |
750 | if (IS_ERR(child)) | |
751 | return PTR_ERR(child); | |
752 | ||
753 | child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig); | |
754 | if (IS_ERR(child)) | |
755 | return PTR_ERR(child); | |
dad759ff DB |
756 | } |
757 | ||
dad759ff | 758 | /* maybe add LDOs that are omitted on cost-reduced parts */ |
9da66539 RN |
759 | if (twl_has_regulator() && !(features & TPS_SUBSET) |
760 | && twl_class_is_4030()) { | |
dad759ff DB |
761 | child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2); |
762 | if (IS_ERR(child)) | |
763 | return PTR_ERR(child); | |
dad759ff DB |
764 | |
765 | child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2); | |
766 | if (IS_ERR(child)) | |
767 | return PTR_ERR(child); | |
768 | ||
769 | child = add_regulator(TWL4030_REG_VSIM, pdata->vsim); | |
770 | if (IS_ERR(child)) | |
771 | return PTR_ERR(child); | |
772 | ||
773 | child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1); | |
774 | if (IS_ERR(child)) | |
775 | return PTR_ERR(child); | |
776 | ||
777 | child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3); | |
778 | if (IS_ERR(child)) | |
779 | return PTR_ERR(child); | |
780 | ||
781 | child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4); | |
782 | if (IS_ERR(child)) | |
783 | return PTR_ERR(child); | |
a603a7fa DB |
784 | } |
785 | ||
9da66539 RN |
786 | /* twl6030 regulators */ |
787 | if (twl_has_regulator() && twl_class_is_6030()) { | |
788 | child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc); | |
789 | if (IS_ERR(child)) | |
790 | return PTR_ERR(child); | |
791 | ||
792 | child = add_regulator(TWL6030_REG_VPP, pdata->vpp); | |
793 | if (IS_ERR(child)) | |
794 | return PTR_ERR(child); | |
795 | ||
796 | child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim); | |
797 | if (IS_ERR(child)) | |
798 | return PTR_ERR(child); | |
799 | ||
800 | child = add_regulator(TWL6030_REG_VANA, pdata->vana); | |
801 | if (IS_ERR(child)) | |
802 | return PTR_ERR(child); | |
803 | ||
804 | child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio); | |
805 | if (IS_ERR(child)) | |
806 | return PTR_ERR(child); | |
807 | ||
808 | child = add_regulator(TWL6030_REG_VDAC, pdata->vdac); | |
809 | if (IS_ERR(child)) | |
810 | return PTR_ERR(child); | |
811 | ||
812 | child = add_regulator(TWL6030_REG_VUSB, pdata->vusb); | |
813 | if (IS_ERR(child)) | |
814 | return PTR_ERR(child); | |
815 | ||
816 | child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1); | |
817 | if (IS_ERR(child)) | |
818 | return PTR_ERR(child); | |
819 | ||
820 | child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2); | |
821 | if (IS_ERR(child)) | |
822 | return PTR_ERR(child); | |
823 | ||
824 | child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3); | |
825 | if (IS_ERR(child)) | |
826 | return PTR_ERR(child); | |
827 | } | |
828 | ||
5725d66b | 829 | return 0; |
a603a7fa DB |
830 | } |
831 | ||
832 | /*----------------------------------------------------------------------*/ | |
833 | ||
834 | /* | |
835 | * These three functions initialize the on-chip clock framework, | |
836 | * letting it generate the right frequencies for USB, MADC, and | |
837 | * other purposes. | |
838 | */ | |
839 | static inline int __init protect_pm_master(void) | |
840 | { | |
841 | int e = 0; | |
842 | ||
49e6f87e FB |
843 | e = twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, |
844 | TWL4030_PM_MASTER_PROTECT_KEY); | |
a603a7fa DB |
845 | return e; |
846 | } | |
847 | ||
848 | static inline int __init unprotect_pm_master(void) | |
849 | { | |
850 | int e = 0; | |
851 | ||
49e6f87e FB |
852 | e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, |
853 | TWL4030_PM_MASTER_KEY_CFG1, | |
854 | TWL4030_PM_MASTER_PROTECT_KEY); | |
855 | e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER, | |
856 | TWL4030_PM_MASTER_KEY_CFG2, | |
857 | TWL4030_PM_MASTER_PROTECT_KEY); | |
858 | ||
a603a7fa DB |
859 | return e; |
860 | } | |
861 | ||
38a68496 IK |
862 | static void clocks_init(struct device *dev, |
863 | struct twl4030_clock_init_data *clock) | |
a603a7fa DB |
864 | { |
865 | int e = 0; | |
866 | struct clk *osc; | |
867 | u32 rate; | |
868 | u8 ctrl = HFCLK_FREQ_26_MHZ; | |
869 | ||
870 | #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) | |
871 | if (cpu_is_omap2430()) | |
e6b50c8d | 872 | osc = clk_get(dev, "osc_ck"); |
a603a7fa | 873 | else |
e6b50c8d | 874 | osc = clk_get(dev, "osc_sys_ck"); |
6354ab5c | 875 | |
a603a7fa | 876 | if (IS_ERR(osc)) { |
fc7b92fc | 877 | printk(KERN_WARNING "Skipping twl internal clock init and " |
a603a7fa DB |
878 | "using bootloader value (unknown osc rate)\n"); |
879 | return; | |
880 | } | |
881 | ||
882 | rate = clk_get_rate(osc); | |
883 | clk_put(osc); | |
884 | ||
6354ab5c SO |
885 | #else |
886 | /* REVISIT for non-OMAP systems, pass the clock rate from | |
887 | * board init code, using platform_data. | |
888 | */ | |
889 | osc = ERR_PTR(-EIO); | |
890 | ||
fc7b92fc | 891 | printk(KERN_WARNING "Skipping twl internal clock init and " |
6354ab5c SO |
892 | "using bootloader value (unknown osc rate)\n"); |
893 | ||
894 | return; | |
895 | #endif | |
896 | ||
a603a7fa DB |
897 | switch (rate) { |
898 | case 19200000: | |
899 | ctrl = HFCLK_FREQ_19p2_MHZ; | |
900 | break; | |
901 | case 26000000: | |
902 | ctrl = HFCLK_FREQ_26_MHZ; | |
903 | break; | |
904 | case 38400000: | |
905 | ctrl = HFCLK_FREQ_38p4_MHZ; | |
906 | break; | |
907 | } | |
908 | ||
909 | ctrl |= HIGH_PERF_SQ; | |
38a68496 IK |
910 | if (clock && clock->ck32k_lowpwr_enable) |
911 | ctrl |= CK32K_LOWPWR_EN; | |
912 | ||
a603a7fa DB |
913 | e |= unprotect_pm_master(); |
914 | /* effect->MADC+USB ck en */ | |
fc7b92fc | 915 | e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); |
a603a7fa DB |
916 | e |= protect_pm_master(); |
917 | ||
918 | if (e < 0) | |
919 | pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); | |
920 | } | |
921 | ||
922 | /*----------------------------------------------------------------------*/ | |
923 | ||
e8deb28c B |
924 | int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); |
925 | int twl4030_exit_irq(void); | |
926 | int twl4030_init_chip_irq(const char *chip); | |
927 | int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end); | |
928 | int twl6030_exit_irq(void); | |
a603a7fa | 929 | |
fc7b92fc | 930 | static int twl_remove(struct i2c_client *client) |
a603a7fa DB |
931 | { |
932 | unsigned i; | |
a30d46c0 | 933 | int status; |
a603a7fa | 934 | |
e8deb28c B |
935 | if (twl_class_is_4030()) |
936 | status = twl4030_exit_irq(); | |
937 | else | |
938 | status = twl6030_exit_irq(); | |
939 | ||
a30d46c0 DB |
940 | if (status < 0) |
941 | return status; | |
a603a7fa | 942 | |
fc7b92fc B |
943 | for (i = 0; i < TWL_NUM_SLAVES; i++) { |
944 | struct twl_client *twl = &twl_modules[i]; | |
a603a7fa DB |
945 | |
946 | if (twl->client && twl->client != client) | |
947 | i2c_unregister_device(twl->client); | |
fc7b92fc | 948 | twl_modules[i].client = NULL; |
a603a7fa DB |
949 | } |
950 | inuse = false; | |
951 | return 0; | |
952 | } | |
953 | ||
954 | /* NOTE: this driver only handles a single twl4030/tps659x0 chip */ | |
b5e102cd | 955 | static int __init |
fc7b92fc | 956 | twl_probe(struct i2c_client *client, const struct i2c_device_id *id) |
a603a7fa DB |
957 | { |
958 | int status; | |
959 | unsigned i; | |
960 | struct twl4030_platform_data *pdata = client->dev.platform_data; | |
a29aaf55 | 961 | u8 temp; |
a603a7fa DB |
962 | |
963 | if (!pdata) { | |
964 | dev_dbg(&client->dev, "no platform data?\n"); | |
965 | return -EINVAL; | |
966 | } | |
967 | ||
968 | if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { | |
969 | dev_dbg(&client->dev, "can't talk I2C?\n"); | |
970 | return -EIO; | |
971 | } | |
972 | ||
a30d46c0 | 973 | if (inuse) { |
a603a7fa DB |
974 | dev_dbg(&client->dev, "driver is already in use\n"); |
975 | return -EBUSY; | |
976 | } | |
977 | ||
fc7b92fc B |
978 | for (i = 0; i < TWL_NUM_SLAVES; i++) { |
979 | struct twl_client *twl = &twl_modules[i]; | |
a603a7fa DB |
980 | |
981 | twl->address = client->addr + i; | |
982 | if (i == 0) | |
983 | twl->client = client; | |
984 | else { | |
985 | twl->client = i2c_new_dummy(client->adapter, | |
986 | twl->address); | |
987 | if (!twl->client) { | |
a8643430 | 988 | dev_err(&client->dev, |
a603a7fa DB |
989 | "can't attach client %d\n", i); |
990 | status = -ENOMEM; | |
991 | goto fail; | |
992 | } | |
a603a7fa DB |
993 | } |
994 | mutex_init(&twl->xfer_lock); | |
995 | } | |
996 | inuse = true; | |
e8deb28c B |
997 | if ((id->driver_data) & TWL6030_CLASS) { |
998 | twl_id = TWL6030_CLASS_ID; | |
999 | twl_map = &twl6030_map[0]; | |
1000 | } else { | |
1001 | twl_id = TWL4030_CLASS_ID; | |
1002 | twl_map = &twl4030_map[0]; | |
1003 | } | |
a603a7fa DB |
1004 | |
1005 | /* setup clock framework */ | |
38a68496 | 1006 | clocks_init(&client->dev, pdata->clock); |
a603a7fa | 1007 | |
ebf0bd36 AK |
1008 | /* load power event scripts */ |
1009 | if (twl_has_power() && pdata->power) | |
1010 | twl4030_power_init(pdata->power); | |
1011 | ||
a603a7fa DB |
1012 | /* Maybe init the T2 Interrupt subsystem */ |
1013 | if (client->irq | |
1014 | && pdata->irq_base | |
1015 | && pdata->irq_end > pdata->irq_base) { | |
e8deb28c B |
1016 | if (twl_class_is_4030()) { |
1017 | twl4030_init_chip_irq(id->name); | |
1018 | status = twl4030_init_irq(client->irq, pdata->irq_base, | |
1019 | pdata->irq_end); | |
1020 | } else { | |
1021 | status = twl6030_init_irq(client->irq, pdata->irq_base, | |
1022 | pdata->irq_end); | |
1023 | } | |
1024 | ||
a30d46c0 DB |
1025 | if (status < 0) |
1026 | goto fail; | |
a603a7fa DB |
1027 | } |
1028 | ||
a29aaf55 MS |
1029 | /* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. |
1030 | * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, | |
1031 | * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. | |
1032 | */ | |
1033 | ||
1034 | if (twl_class_is_4030()) { | |
1035 | twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); | |
1036 | temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ | |
1037 | I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); | |
1038 | twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); | |
1039 | } | |
1040 | ||
dad759ff | 1041 | status = add_children(pdata, id->driver_data); |
a603a7fa DB |
1042 | fail: |
1043 | if (status < 0) | |
fc7b92fc | 1044 | twl_remove(client); |
a603a7fa DB |
1045 | return status; |
1046 | } | |
1047 | ||
fc7b92fc | 1048 | static const struct i2c_device_id twl_ids[] = { |
dad759ff DB |
1049 | { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ |
1050 | { "twl5030", 0 }, /* T2 updated */ | |
1920a61e | 1051 | { "twl5031", TWL5031 }, /* TWL5030 updated */ |
dad759ff DB |
1052 | { "tps65950", 0 }, /* catalog version of twl5030 */ |
1053 | { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ | |
1054 | { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ | |
e8deb28c | 1055 | { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ |
a603a7fa DB |
1056 | { /* end of list */ }, |
1057 | }; | |
fc7b92fc | 1058 | MODULE_DEVICE_TABLE(i2c, twl_ids); |
a603a7fa DB |
1059 | |
1060 | /* One Client Driver , 4 Clients */ | |
fc7b92fc | 1061 | static struct i2c_driver twl_driver = { |
a603a7fa | 1062 | .driver.name = DRIVER_NAME, |
fc7b92fc B |
1063 | .id_table = twl_ids, |
1064 | .probe = twl_probe, | |
1065 | .remove = twl_remove, | |
a603a7fa DB |
1066 | }; |
1067 | ||
fc7b92fc | 1068 | static int __init twl_init(void) |
a603a7fa | 1069 | { |
fc7b92fc | 1070 | return i2c_add_driver(&twl_driver); |
a603a7fa | 1071 | } |
fc7b92fc | 1072 | subsys_initcall(twl_init); |
a603a7fa | 1073 | |
fc7b92fc | 1074 | static void __exit twl_exit(void) |
a603a7fa | 1075 | { |
fc7b92fc | 1076 | i2c_del_driver(&twl_driver); |
a603a7fa | 1077 | } |
fc7b92fc | 1078 | module_exit(twl_exit); |
a603a7fa DB |
1079 | |
1080 | MODULE_AUTHOR("Texas Instruments, Inc."); | |
fc7b92fc | 1081 | MODULE_DESCRIPTION("I2C Core interface for TWL"); |
a603a7fa | 1082 | MODULE_LICENSE("GPL"); |