Commit | Line | Data |
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f19b2823 MLC |
1 | /* |
2 | * MFD driver for TWL6040 audio device | |
3 | * | |
4 | * Authors: Misael Lopez Cruz <misael.lopez@ti.com> | |
5 | * Jorge Eduardo Candelaria <jorge.candelaria@ti.com> | |
6 | * Peter Ujfalusi <peter.ujfalusi@ti.com> | |
7 | * | |
8 | * Copyright: (C) 2011 Texas Instruments, Inc. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA | |
22 | * 02110-1301 USA | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <linux/module.h> | |
27 | #include <linux/types.h> | |
28 | #include <linux/slab.h> | |
29 | #include <linux/kernel.h> | |
30 | #include <linux/platform_device.h> | |
31 | #include <linux/gpio.h> | |
32 | #include <linux/delay.h> | |
8eaeb939 PU |
33 | #include <linux/i2c.h> |
34 | #include <linux/regmap.h> | |
35 | #include <linux/err.h> | |
f19b2823 MLC |
36 | #include <linux/mfd/core.h> |
37 | #include <linux/mfd/twl6040.h> | |
38 | ||
31b402e3 PU |
39 | #define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1) |
40 | ||
f19b2823 MLC |
41 | int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) |
42 | { | |
43 | int ret; | |
8eaeb939 | 44 | unsigned int val; |
f19b2823 MLC |
45 | |
46 | mutex_lock(&twl6040->io_mutex); | |
31b402e3 PU |
47 | /* Vibra control registers from cache */ |
48 | if (unlikely(reg == TWL6040_REG_VIBCTLL || | |
49 | reg == TWL6040_REG_VIBCTLR)) { | |
50 | val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)]; | |
51 | } else { | |
8eaeb939 | 52 | ret = regmap_read(twl6040->regmap, reg, &val); |
31b402e3 PU |
53 | if (ret < 0) { |
54 | mutex_unlock(&twl6040->io_mutex); | |
55 | return ret; | |
56 | } | |
f19b2823 MLC |
57 | } |
58 | mutex_unlock(&twl6040->io_mutex); | |
59 | ||
60 | return val; | |
61 | } | |
62 | EXPORT_SYMBOL(twl6040_reg_read); | |
63 | ||
64 | int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) | |
65 | { | |
66 | int ret; | |
67 | ||
68 | mutex_lock(&twl6040->io_mutex); | |
8eaeb939 | 69 | ret = regmap_write(twl6040->regmap, reg, val); |
31b402e3 PU |
70 | /* Cache the vibra control registers */ |
71 | if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR) | |
72 | twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val; | |
f19b2823 MLC |
73 | mutex_unlock(&twl6040->io_mutex); |
74 | ||
75 | return ret; | |
76 | } | |
77 | EXPORT_SYMBOL(twl6040_reg_write); | |
78 | ||
79 | int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
80 | { | |
81 | int ret; | |
f19b2823 MLC |
82 | |
83 | mutex_lock(&twl6040->io_mutex); | |
8eaeb939 | 84 | ret = regmap_update_bits(twl6040->regmap, reg, mask, mask); |
f19b2823 MLC |
85 | mutex_unlock(&twl6040->io_mutex); |
86 | return ret; | |
87 | } | |
88 | EXPORT_SYMBOL(twl6040_set_bits); | |
89 | ||
90 | int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
91 | { | |
92 | int ret; | |
f19b2823 MLC |
93 | |
94 | mutex_lock(&twl6040->io_mutex); | |
8eaeb939 | 95 | ret = regmap_update_bits(twl6040->regmap, reg, mask, 0); |
f19b2823 MLC |
96 | mutex_unlock(&twl6040->io_mutex); |
97 | return ret; | |
98 | } | |
99 | EXPORT_SYMBOL(twl6040_clear_bits); | |
100 | ||
101 | /* twl6040 codec manual power-up sequence */ | |
102 | static int twl6040_power_up(struct twl6040 *twl6040) | |
103 | { | |
104 | u8 ldoctl, ncpctl, lppllctl; | |
105 | int ret; | |
106 | ||
107 | /* enable high-side LDO, reference system and internal oscillator */ | |
108 | ldoctl = TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA; | |
109 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
110 | if (ret) | |
111 | return ret; | |
112 | usleep_range(10000, 10500); | |
113 | ||
114 | /* enable negative charge pump */ | |
115 | ncpctl = TWL6040_NCPENA; | |
116 | ret = twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
117 | if (ret) | |
118 | goto ncp_err; | |
119 | usleep_range(1000, 1500); | |
120 | ||
121 | /* enable low-side LDO */ | |
122 | ldoctl |= TWL6040_LSLDOENA; | |
123 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
124 | if (ret) | |
125 | goto lsldo_err; | |
126 | usleep_range(1000, 1500); | |
127 | ||
128 | /* enable low-power PLL */ | |
129 | lppllctl = TWL6040_LPLLENA; | |
130 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
131 | if (ret) | |
132 | goto lppll_err; | |
133 | usleep_range(5000, 5500); | |
134 | ||
135 | /* disable internal oscillator */ | |
136 | ldoctl &= ~TWL6040_OSCENA; | |
137 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
138 | if (ret) | |
139 | goto osc_err; | |
140 | ||
141 | return 0; | |
142 | ||
143 | osc_err: | |
144 | lppllctl &= ~TWL6040_LPLLENA; | |
145 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
146 | lppll_err: | |
147 | ldoctl &= ~TWL6040_LSLDOENA; | |
148 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
149 | lsldo_err: | |
150 | ncpctl &= ~TWL6040_NCPENA; | |
151 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
152 | ncp_err: | |
153 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
154 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
155 | ||
156 | return ret; | |
157 | } | |
158 | ||
159 | /* twl6040 manual power-down sequence */ | |
160 | static void twl6040_power_down(struct twl6040 *twl6040) | |
161 | { | |
162 | u8 ncpctl, ldoctl, lppllctl; | |
163 | ||
164 | ncpctl = twl6040_reg_read(twl6040, TWL6040_REG_NCPCTL); | |
165 | ldoctl = twl6040_reg_read(twl6040, TWL6040_REG_LDOCTL); | |
166 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
167 | ||
168 | /* enable internal oscillator */ | |
169 | ldoctl |= TWL6040_OSCENA; | |
170 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
171 | usleep_range(1000, 1500); | |
172 | ||
173 | /* disable low-power PLL */ | |
174 | lppllctl &= ~TWL6040_LPLLENA; | |
175 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
176 | ||
177 | /* disable low-side LDO */ | |
178 | ldoctl &= ~TWL6040_LSLDOENA; | |
179 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
180 | ||
181 | /* disable negative charge pump */ | |
182 | ncpctl &= ~TWL6040_NCPENA; | |
183 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
184 | ||
185 | /* disable high-side LDO, reference system and internal oscillator */ | |
186 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
187 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
188 | } | |
189 | ||
190 | static irqreturn_t twl6040_naudint_handler(int irq, void *data) | |
191 | { | |
192 | struct twl6040 *twl6040 = data; | |
193 | u8 intid, status; | |
194 | ||
195 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); | |
196 | ||
197 | if (intid & TWL6040_READYINT) | |
198 | complete(&twl6040->ready); | |
199 | ||
200 | if (intid & TWL6040_THINT) { | |
201 | status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS); | |
202 | if (status & TWL6040_TSHUTDET) { | |
2d7c957e | 203 | dev_warn(twl6040->dev, |
f19b2823 MLC |
204 | "Thermal shutdown, powering-off"); |
205 | twl6040_power(twl6040, 0); | |
206 | } else { | |
2d7c957e | 207 | dev_warn(twl6040->dev, |
f19b2823 MLC |
208 | "Leaving thermal shutdown, powering-on"); |
209 | twl6040_power(twl6040, 1); | |
210 | } | |
211 | } | |
212 | ||
213 | return IRQ_HANDLED; | |
214 | } | |
215 | ||
216 | static int twl6040_power_up_completion(struct twl6040 *twl6040, | |
217 | int naudint) | |
218 | { | |
219 | int time_left; | |
220 | u8 intid; | |
221 | ||
222 | time_left = wait_for_completion_timeout(&twl6040->ready, | |
223 | msecs_to_jiffies(144)); | |
224 | if (!time_left) { | |
225 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); | |
226 | if (!(intid & TWL6040_READYINT)) { | |
2d7c957e | 227 | dev_err(twl6040->dev, |
f19b2823 MLC |
228 | "timeout waiting for READYINT\n"); |
229 | return -ETIMEDOUT; | |
230 | } | |
231 | } | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
236 | int twl6040_power(struct twl6040 *twl6040, int on) | |
237 | { | |
238 | int audpwron = twl6040->audpwron; | |
239 | int naudint = twl6040->irq; | |
240 | int ret = 0; | |
241 | ||
242 | mutex_lock(&twl6040->mutex); | |
243 | ||
244 | if (on) { | |
245 | /* already powered-up */ | |
246 | if (twl6040->power_count++) | |
247 | goto out; | |
248 | ||
249 | if (gpio_is_valid(audpwron)) { | |
250 | /* use AUDPWRON line */ | |
251 | gpio_set_value(audpwron, 1); | |
252 | /* wait for power-up completion */ | |
253 | ret = twl6040_power_up_completion(twl6040, naudint); | |
254 | if (ret) { | |
2d7c957e | 255 | dev_err(twl6040->dev, |
f19b2823 MLC |
256 | "automatic power-down failed\n"); |
257 | twl6040->power_count = 0; | |
258 | goto out; | |
259 | } | |
260 | } else { | |
261 | /* use manual power-up sequence */ | |
262 | ret = twl6040_power_up(twl6040); | |
263 | if (ret) { | |
2d7c957e | 264 | dev_err(twl6040->dev, |
f19b2823 MLC |
265 | "manual power-up failed\n"); |
266 | twl6040->power_count = 0; | |
267 | goto out; | |
268 | } | |
269 | } | |
cfb7a33b PU |
270 | /* Default PLL configuration after power up */ |
271 | twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL; | |
f19b2823 | 272 | twl6040->sysclk = 19200000; |
f8447d6c | 273 | twl6040->mclk = 32768; |
f19b2823 MLC |
274 | } else { |
275 | /* already powered-down */ | |
276 | if (!twl6040->power_count) { | |
2d7c957e | 277 | dev_err(twl6040->dev, |
f19b2823 MLC |
278 | "device is already powered-off\n"); |
279 | ret = -EPERM; | |
280 | goto out; | |
281 | } | |
282 | ||
283 | if (--twl6040->power_count) | |
284 | goto out; | |
285 | ||
286 | if (gpio_is_valid(audpwron)) { | |
287 | /* use AUDPWRON line */ | |
288 | gpio_set_value(audpwron, 0); | |
289 | ||
290 | /* power-down sequence latency */ | |
291 | usleep_range(500, 700); | |
292 | } else { | |
293 | /* use manual power-down sequence */ | |
294 | twl6040_power_down(twl6040); | |
295 | } | |
f19b2823 | 296 | twl6040->sysclk = 0; |
f8447d6c | 297 | twl6040->mclk = 0; |
f19b2823 MLC |
298 | } |
299 | ||
300 | out: | |
301 | mutex_unlock(&twl6040->mutex); | |
302 | return ret; | |
303 | } | |
304 | EXPORT_SYMBOL(twl6040_power); | |
305 | ||
cfb7a33b | 306 | int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, |
f19b2823 MLC |
307 | unsigned int freq_in, unsigned int freq_out) |
308 | { | |
309 | u8 hppllctl, lppllctl; | |
310 | int ret = 0; | |
311 | ||
312 | mutex_lock(&twl6040->mutex); | |
313 | ||
314 | hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL); | |
315 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
316 | ||
2bd05db7 PU |
317 | /* Force full reconfiguration when switching between PLL */ |
318 | if (pll_id != twl6040->pll) { | |
319 | twl6040->sysclk = 0; | |
320 | twl6040->mclk = 0; | |
321 | } | |
322 | ||
cfb7a33b PU |
323 | switch (pll_id) { |
324 | case TWL6040_SYSCLK_SEL_LPPLL: | |
f19b2823 | 325 | /* low-power PLL divider */ |
2bd05db7 PU |
326 | /* Change the sysclk configuration only if it has been canged */ |
327 | if (twl6040->sysclk != freq_out) { | |
328 | switch (freq_out) { | |
329 | case 17640000: | |
330 | lppllctl |= TWL6040_LPLLFIN; | |
331 | break; | |
332 | case 19200000: | |
333 | lppllctl &= ~TWL6040_LPLLFIN; | |
334 | break; | |
335 | default: | |
336 | dev_err(twl6040->dev, | |
337 | "freq_out %d not supported\n", | |
338 | freq_out); | |
339 | ret = -EINVAL; | |
340 | goto pll_out; | |
341 | } | |
342 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
343 | lppllctl); | |
f19b2823 | 344 | } |
2bd05db7 PU |
345 | |
346 | /* The PLL in use has not been change, we can exit */ | |
347 | if (twl6040->pll == pll_id) | |
348 | break; | |
f19b2823 MLC |
349 | |
350 | switch (freq_in) { | |
351 | case 32768: | |
352 | lppllctl |= TWL6040_LPLLENA; | |
353 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
354 | lppllctl); | |
355 | mdelay(5); | |
356 | lppllctl &= ~TWL6040_HPLLSEL; | |
357 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
358 | lppllctl); | |
359 | hppllctl &= ~TWL6040_HPLLENA; | |
360 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, | |
361 | hppllctl); | |
362 | break; | |
363 | default: | |
2d7c957e | 364 | dev_err(twl6040->dev, |
f19b2823 MLC |
365 | "freq_in %d not supported\n", freq_in); |
366 | ret = -EINVAL; | |
367 | goto pll_out; | |
368 | } | |
f19b2823 | 369 | break; |
cfb7a33b | 370 | case TWL6040_SYSCLK_SEL_HPPLL: |
f19b2823 MLC |
371 | /* high-performance PLL can provide only 19.2 MHz */ |
372 | if (freq_out != 19200000) { | |
2d7c957e | 373 | dev_err(twl6040->dev, |
f19b2823 MLC |
374 | "freq_out %d not supported\n", freq_out); |
375 | ret = -EINVAL; | |
376 | goto pll_out; | |
377 | } | |
378 | ||
2bd05db7 PU |
379 | if (twl6040->mclk != freq_in) { |
380 | hppllctl &= ~TWL6040_MCLK_MSK; | |
381 | ||
382 | switch (freq_in) { | |
383 | case 12000000: | |
384 | /* PLL enabled, active mode */ | |
385 | hppllctl |= TWL6040_MCLK_12000KHZ | | |
386 | TWL6040_HPLLENA; | |
387 | break; | |
388 | case 19200000: | |
389 | /* | |
390 | * PLL disabled | |
391 | * (enable PLL if MCLK jitter quality | |
392 | * doesn't meet specification) | |
393 | */ | |
394 | hppllctl |= TWL6040_MCLK_19200KHZ; | |
395 | break; | |
396 | case 26000000: | |
397 | /* PLL enabled, active mode */ | |
398 | hppllctl |= TWL6040_MCLK_26000KHZ | | |
399 | TWL6040_HPLLENA; | |
400 | break; | |
401 | case 38400000: | |
402 | /* PLL enabled, active mode */ | |
403 | hppllctl |= TWL6040_MCLK_38400KHZ | | |
404 | TWL6040_HPLLENA; | |
405 | break; | |
406 | default: | |
407 | dev_err(twl6040->dev, | |
408 | "freq_in %d not supported\n", freq_in); | |
409 | ret = -EINVAL; | |
410 | goto pll_out; | |
411 | } | |
f19b2823 | 412 | |
f19b2823 | 413 | /* |
2bd05db7 PU |
414 | * enable clock slicer to ensure input waveform is |
415 | * square | |
f19b2823 | 416 | */ |
2bd05db7 | 417 | hppllctl |= TWL6040_HPLLSQRENA; |
f19b2823 | 418 | |
2bd05db7 PU |
419 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, |
420 | hppllctl); | |
421 | usleep_range(500, 700); | |
422 | lppllctl |= TWL6040_HPLLSEL; | |
423 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
424 | lppllctl); | |
425 | lppllctl &= ~TWL6040_LPLLENA; | |
426 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
427 | lppllctl); | |
428 | } | |
f19b2823 MLC |
429 | break; |
430 | default: | |
2d7c957e | 431 | dev_err(twl6040->dev, "unknown pll id %d\n", pll_id); |
f19b2823 MLC |
432 | ret = -EINVAL; |
433 | goto pll_out; | |
434 | } | |
435 | ||
436 | twl6040->sysclk = freq_out; | |
f8447d6c | 437 | twl6040->mclk = freq_in; |
cfb7a33b | 438 | twl6040->pll = pll_id; |
f19b2823 MLC |
439 | |
440 | pll_out: | |
441 | mutex_unlock(&twl6040->mutex); | |
442 | return ret; | |
443 | } | |
444 | EXPORT_SYMBOL(twl6040_set_pll); | |
445 | ||
cfb7a33b | 446 | int twl6040_get_pll(struct twl6040 *twl6040) |
f19b2823 | 447 | { |
cfb7a33b PU |
448 | if (twl6040->power_count) |
449 | return twl6040->pll; | |
450 | else | |
451 | return -ENODEV; | |
f19b2823 MLC |
452 | } |
453 | EXPORT_SYMBOL(twl6040_get_pll); | |
454 | ||
455 | unsigned int twl6040_get_sysclk(struct twl6040 *twl6040) | |
456 | { | |
457 | return twl6040->sysclk; | |
458 | } | |
459 | EXPORT_SYMBOL(twl6040_get_sysclk); | |
460 | ||
70601ec1 PU |
461 | /* Get the combined status of the vibra control register */ |
462 | int twl6040_get_vibralr_status(struct twl6040 *twl6040) | |
463 | { | |
464 | u8 status; | |
465 | ||
466 | status = twl6040->vibra_ctrl_cache[0] | twl6040->vibra_ctrl_cache[1]; | |
467 | status &= (TWL6040_VIBENA | TWL6040_VIBSEL); | |
468 | ||
469 | return status; | |
470 | } | |
471 | EXPORT_SYMBOL(twl6040_get_vibralr_status); | |
472 | ||
0f962ae2 PU |
473 | static struct resource twl6040_vibra_rsrc[] = { |
474 | { | |
475 | .flags = IORESOURCE_IRQ, | |
476 | }, | |
477 | }; | |
478 | ||
479 | static struct resource twl6040_codec_rsrc[] = { | |
480 | { | |
481 | .flags = IORESOURCE_IRQ, | |
482 | }, | |
483 | }; | |
484 | ||
8eaeb939 | 485 | static bool twl6040_readable_reg(struct device *dev, unsigned int reg) |
f19b2823 | 486 | { |
8eaeb939 PU |
487 | /* Register 0 is not readable */ |
488 | if (!reg) | |
489 | return false; | |
490 | return true; | |
491 | } | |
492 | ||
493 | static struct regmap_config twl6040_regmap_config = { | |
494 | .reg_bits = 8, | |
495 | .val_bits = 8, | |
496 | .max_register = TWL6040_REG_STATUS, /* 0x2e */ | |
497 | ||
498 | .readable_reg = twl6040_readable_reg, | |
499 | }; | |
500 | ||
501 | static int __devinit twl6040_probe(struct i2c_client *client, | |
502 | const struct i2c_device_id *id) | |
503 | { | |
504 | struct twl6040_platform_data *pdata = client->dev.platform_data; | |
f19b2823 MLC |
505 | struct twl6040 *twl6040; |
506 | struct mfd_cell *cell = NULL; | |
507 | int ret, children = 0; | |
508 | ||
509 | if (!pdata) { | |
8eaeb939 | 510 | dev_err(&client->dev, "Platform data is missing\n"); |
f19b2823 MLC |
511 | return -EINVAL; |
512 | } | |
513 | ||
d20e1d21 | 514 | /* In order to operate correctly we need valid interrupt config */ |
8eaeb939 PU |
515 | if (!client->irq || !pdata->irq_base) { |
516 | dev_err(&client->dev, "Invalid IRQ configuration\n"); | |
d20e1d21 PU |
517 | return -EINVAL; |
518 | } | |
519 | ||
8eaeb939 PU |
520 | twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), |
521 | GFP_KERNEL); | |
522 | if (!twl6040) { | |
523 | ret = -ENOMEM; | |
524 | goto err; | |
525 | } | |
526 | ||
527 | twl6040->regmap = regmap_init_i2c(client, &twl6040_regmap_config); | |
528 | if (IS_ERR(twl6040->regmap)) { | |
529 | ret = PTR_ERR(twl6040->regmap); | |
530 | goto err; | |
531 | } | |
f19b2823 | 532 | |
8eaeb939 | 533 | i2c_set_clientdata(client, twl6040); |
f19b2823 | 534 | |
8eaeb939 PU |
535 | twl6040->dev = &client->dev; |
536 | twl6040->irq = client->irq; | |
f19b2823 MLC |
537 | twl6040->irq_base = pdata->irq_base; |
538 | ||
539 | mutex_init(&twl6040->mutex); | |
540 | mutex_init(&twl6040->io_mutex); | |
541 | init_completion(&twl6040->ready); | |
542 | ||
543 | twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); | |
544 | ||
77f63e06 PU |
545 | /* ERRATA: Automatic power-up is not possible in ES1.0 */ |
546 | if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) | |
547 | twl6040->audpwron = pdata->audpwron_gpio; | |
548 | else | |
549 | twl6040->audpwron = -EINVAL; | |
550 | ||
f19b2823 | 551 | if (gpio_is_valid(twl6040->audpwron)) { |
b04edb93 AL |
552 | ret = gpio_request_one(twl6040->audpwron, GPIOF_OUT_INIT_LOW, |
553 | "audpwron"); | |
f19b2823 MLC |
554 | if (ret) |
555 | goto gpio1_err; | |
f19b2823 MLC |
556 | } |
557 | ||
d20e1d21 PU |
558 | /* codec interrupt */ |
559 | ret = twl6040_irq_init(twl6040); | |
560 | if (ret) | |
561 | goto gpio2_err; | |
562 | ||
1b7c4725 PU |
563 | ret = request_threaded_irq(twl6040->irq_base + TWL6040_IRQ_READY, |
564 | NULL, twl6040_naudint_handler, 0, | |
565 | "twl6040_irq_ready", twl6040); | |
d20e1d21 PU |
566 | if (ret) { |
567 | dev_err(twl6040->dev, "READY IRQ request failed: %d\n", | |
568 | ret); | |
569 | goto irq_err; | |
f19b2823 MLC |
570 | } |
571 | ||
572 | /* dual-access registers controlled by I2C only */ | |
573 | twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL); | |
574 | ||
575 | if (pdata->codec) { | |
0f962ae2 PU |
576 | int irq = twl6040->irq_base + TWL6040_IRQ_PLUG; |
577 | ||
f19b2823 MLC |
578 | cell = &twl6040->cells[children]; |
579 | cell->name = "twl6040-codec"; | |
0f962ae2 PU |
580 | twl6040_codec_rsrc[0].start = irq; |
581 | twl6040_codec_rsrc[0].end = irq; | |
582 | cell->resources = twl6040_codec_rsrc; | |
583 | cell->num_resources = ARRAY_SIZE(twl6040_codec_rsrc); | |
6c448637 PU |
584 | cell->platform_data = pdata->codec; |
585 | cell->pdata_size = sizeof(*pdata->codec); | |
f19b2823 MLC |
586 | children++; |
587 | } | |
588 | ||
589 | if (pdata->vibra) { | |
0f962ae2 PU |
590 | int irq = twl6040->irq_base + TWL6040_IRQ_VIB; |
591 | ||
f19b2823 MLC |
592 | cell = &twl6040->cells[children]; |
593 | cell->name = "twl6040-vibra"; | |
0f962ae2 PU |
594 | twl6040_vibra_rsrc[0].start = irq; |
595 | twl6040_vibra_rsrc[0].end = irq; | |
596 | cell->resources = twl6040_vibra_rsrc; | |
597 | cell->num_resources = ARRAY_SIZE(twl6040_vibra_rsrc); | |
598 | ||
f19b2823 MLC |
599 | cell->platform_data = pdata->vibra; |
600 | cell->pdata_size = sizeof(*pdata->vibra); | |
601 | children++; | |
602 | } | |
603 | ||
604 | if (children) { | |
8eaeb939 | 605 | ret = mfd_add_devices(&client->dev, -1, twl6040->cells, |
f19b2823 MLC |
606 | children, NULL, 0); |
607 | if (ret) | |
608 | goto mfd_err; | |
609 | } else { | |
8eaeb939 | 610 | dev_err(&client->dev, "No platform data found for children\n"); |
f19b2823 MLC |
611 | ret = -ENODEV; |
612 | goto mfd_err; | |
613 | } | |
614 | ||
615 | return 0; | |
616 | ||
617 | mfd_err: | |
1b7c4725 | 618 | free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040); |
f19b2823 | 619 | irq_err: |
d20e1d21 | 620 | twl6040_irq_exit(twl6040); |
f19b2823 MLC |
621 | gpio2_err: |
622 | if (gpio_is_valid(twl6040->audpwron)) | |
623 | gpio_free(twl6040->audpwron); | |
624 | gpio1_err: | |
8eaeb939 PU |
625 | i2c_set_clientdata(client, NULL); |
626 | regmap_exit(twl6040->regmap); | |
627 | err: | |
f19b2823 MLC |
628 | return ret; |
629 | } | |
630 | ||
8eaeb939 | 631 | static int __devexit twl6040_remove(struct i2c_client *client) |
f19b2823 | 632 | { |
8eaeb939 | 633 | struct twl6040 *twl6040 = i2c_get_clientdata(client); |
f19b2823 MLC |
634 | |
635 | if (twl6040->power_count) | |
636 | twl6040_power(twl6040, 0); | |
637 | ||
638 | if (gpio_is_valid(twl6040->audpwron)) | |
639 | gpio_free(twl6040->audpwron); | |
640 | ||
1b7c4725 | 641 | free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040); |
d20e1d21 | 642 | twl6040_irq_exit(twl6040); |
f19b2823 | 643 | |
8eaeb939 PU |
644 | mfd_remove_devices(&client->dev); |
645 | i2c_set_clientdata(client, NULL); | |
646 | regmap_exit(twl6040->regmap); | |
f19b2823 MLC |
647 | |
648 | return 0; | |
649 | } | |
650 | ||
8eaeb939 PU |
651 | static const struct i2c_device_id twl6040_i2c_id[] = { |
652 | { "twl6040", 0, }, | |
653 | { }, | |
654 | }; | |
655 | MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id); | |
656 | ||
657 | static struct i2c_driver twl6040_driver = { | |
658 | .driver = { | |
659 | .name = "twl6040", | |
660 | .owner = THIS_MODULE, | |
661 | }, | |
f19b2823 MLC |
662 | .probe = twl6040_probe, |
663 | .remove = __devexit_p(twl6040_remove), | |
8eaeb939 | 664 | .id_table = twl6040_i2c_id, |
f19b2823 MLC |
665 | }; |
666 | ||
8eaeb939 | 667 | module_i2c_driver(twl6040_driver); |
f19b2823 MLC |
668 | |
669 | MODULE_DESCRIPTION("TWL6040 MFD"); | |
670 | MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>"); | |
671 | MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>"); | |
672 | MODULE_LICENSE("GPL"); | |
673 | MODULE_ALIAS("platform:twl6040"); |