Root/
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/err.h> |
31 | #include <linux/platform_device.h> |
32 | #include <linux/of.h> |
33 | #include <linux/of_irq.h> |
34 | #include <linux/of_gpio.h> |
35 | #include <linux/of_platform.h> |
36 | #include <linux/gpio.h> |
37 | #include <linux/delay.h> |
38 | #include <linux/i2c.h> |
39 | #include <linux/regmap.h> |
40 | #include <linux/mfd/core.h> |
41 | #include <linux/mfd/twl6040.h> |
42 | #include <linux/regulator/consumer.h> |
43 | |
44 | #define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1) |
45 | #define TWL6040_NUM_SUPPLIES (2) |
46 | |
47 | static bool twl6040_has_vibra(struct twl6040_platform_data *pdata, |
48 | struct device_node *node) |
49 | { |
50 | if (pdata && pdata->vibra) |
51 | return true; |
52 | |
53 | #ifdef CONFIG_OF |
54 | if (of_find_node_by_name(node, "vibra")) |
55 | return true; |
56 | #endif |
57 | |
58 | return false; |
59 | } |
60 | |
61 | int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) |
62 | { |
63 | int ret; |
64 | unsigned int val; |
65 | |
66 | /* Vibra control registers from cache */ |
67 | if (unlikely(reg == TWL6040_REG_VIBCTLL || |
68 | reg == TWL6040_REG_VIBCTLR)) { |
69 | val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)]; |
70 | } else { |
71 | ret = regmap_read(twl6040->regmap, reg, &val); |
72 | if (ret < 0) |
73 | return ret; |
74 | } |
75 | |
76 | return val; |
77 | } |
78 | EXPORT_SYMBOL(twl6040_reg_read); |
79 | |
80 | int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) |
81 | { |
82 | int ret; |
83 | |
84 | ret = regmap_write(twl6040->regmap, reg, val); |
85 | /* Cache the vibra control registers */ |
86 | if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR) |
87 | twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val; |
88 | |
89 | return ret; |
90 | } |
91 | EXPORT_SYMBOL(twl6040_reg_write); |
92 | |
93 | int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) |
94 | { |
95 | return regmap_update_bits(twl6040->regmap, reg, mask, mask); |
96 | } |
97 | EXPORT_SYMBOL(twl6040_set_bits); |
98 | |
99 | int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) |
100 | { |
101 | return regmap_update_bits(twl6040->regmap, reg, mask, 0); |
102 | } |
103 | EXPORT_SYMBOL(twl6040_clear_bits); |
104 | |
105 | /* twl6040 codec manual power-up sequence */ |
106 | static int twl6040_power_up_manual(struct twl6040 *twl6040) |
107 | { |
108 | u8 ldoctl, ncpctl, lppllctl; |
109 | int ret; |
110 | |
111 | /* enable high-side LDO, reference system and internal oscillator */ |
112 | ldoctl = TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA; |
113 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
114 | if (ret) |
115 | return ret; |
116 | usleep_range(10000, 10500); |
117 | |
118 | /* enable negative charge pump */ |
119 | ncpctl = TWL6040_NCPENA; |
120 | ret = twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); |
121 | if (ret) |
122 | goto ncp_err; |
123 | usleep_range(1000, 1500); |
124 | |
125 | /* enable low-side LDO */ |
126 | ldoctl |= TWL6040_LSLDOENA; |
127 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
128 | if (ret) |
129 | goto lsldo_err; |
130 | usleep_range(1000, 1500); |
131 | |
132 | /* enable low-power PLL */ |
133 | lppllctl = TWL6040_LPLLENA; |
134 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); |
135 | if (ret) |
136 | goto lppll_err; |
137 | usleep_range(5000, 5500); |
138 | |
139 | /* disable internal oscillator */ |
140 | ldoctl &= ~TWL6040_OSCENA; |
141 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
142 | if (ret) |
143 | goto osc_err; |
144 | |
145 | return 0; |
146 | |
147 | osc_err: |
148 | lppllctl &= ~TWL6040_LPLLENA; |
149 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); |
150 | lppll_err: |
151 | ldoctl &= ~TWL6040_LSLDOENA; |
152 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
153 | lsldo_err: |
154 | ncpctl &= ~TWL6040_NCPENA; |
155 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); |
156 | ncp_err: |
157 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); |
158 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
159 | |
160 | dev_err(twl6040->dev, "manual power-up failed\n"); |
161 | return ret; |
162 | } |
163 | |
164 | /* twl6040 manual power-down sequence */ |
165 | static void twl6040_power_down_manual(struct twl6040 *twl6040) |
166 | { |
167 | u8 ncpctl, ldoctl, lppllctl; |
168 | |
169 | ncpctl = twl6040_reg_read(twl6040, TWL6040_REG_NCPCTL); |
170 | ldoctl = twl6040_reg_read(twl6040, TWL6040_REG_LDOCTL); |
171 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); |
172 | |
173 | /* enable internal oscillator */ |
174 | ldoctl |= TWL6040_OSCENA; |
175 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
176 | usleep_range(1000, 1500); |
177 | |
178 | /* disable low-power PLL */ |
179 | lppllctl &= ~TWL6040_LPLLENA; |
180 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); |
181 | |
182 | /* disable low-side LDO */ |
183 | ldoctl &= ~TWL6040_LSLDOENA; |
184 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
185 | |
186 | /* disable negative charge pump */ |
187 | ncpctl &= ~TWL6040_NCPENA; |
188 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); |
189 | |
190 | /* disable high-side LDO, reference system and internal oscillator */ |
191 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); |
192 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); |
193 | } |
194 | |
195 | static irqreturn_t twl6040_readyint_handler(int irq, void *data) |
196 | { |
197 | struct twl6040 *twl6040 = data; |
198 | |
199 | complete(&twl6040->ready); |
200 | |
201 | return IRQ_HANDLED; |
202 | } |
203 | |
204 | static irqreturn_t twl6040_thint_handler(int irq, void *data) |
205 | { |
206 | struct twl6040 *twl6040 = data; |
207 | u8 status; |
208 | |
209 | status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS); |
210 | if (status & TWL6040_TSHUTDET) { |
211 | dev_warn(twl6040->dev, "Thermal shutdown, powering-off"); |
212 | twl6040_power(twl6040, 0); |
213 | } else { |
214 | dev_warn(twl6040->dev, "Leaving thermal shutdown, powering-on"); |
215 | twl6040_power(twl6040, 1); |
216 | } |
217 | |
218 | return IRQ_HANDLED; |
219 | } |
220 | |
221 | static int twl6040_power_up_automatic(struct twl6040 *twl6040) |
222 | { |
223 | int time_left; |
224 | |
225 | gpio_set_value(twl6040->audpwron, 1); |
226 | |
227 | time_left = wait_for_completion_timeout(&twl6040->ready, |
228 | msecs_to_jiffies(144)); |
229 | if (!time_left) { |
230 | u8 intid; |
231 | |
232 | dev_warn(twl6040->dev, "timeout waiting for READYINT\n"); |
233 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); |
234 | if (!(intid & TWL6040_READYINT)) { |
235 | dev_err(twl6040->dev, "automatic power-up failed\n"); |
236 | gpio_set_value(twl6040->audpwron, 0); |
237 | return -ETIMEDOUT; |
238 | } |
239 | } |
240 | |
241 | return 0; |
242 | } |
243 | |
244 | int twl6040_power(struct twl6040 *twl6040, int on) |
245 | { |
246 | int ret = 0; |
247 | |
248 | mutex_lock(&twl6040->mutex); |
249 | |
250 | if (on) { |
251 | /* already powered-up */ |
252 | if (twl6040->power_count++) |
253 | goto out; |
254 | |
255 | if (gpio_is_valid(twl6040->audpwron)) { |
256 | /* use automatic power-up sequence */ |
257 | ret = twl6040_power_up_automatic(twl6040); |
258 | if (ret) { |
259 | twl6040->power_count = 0; |
260 | goto out; |
261 | } |
262 | } else { |
263 | /* use manual power-up sequence */ |
264 | ret = twl6040_power_up_manual(twl6040); |
265 | if (ret) { |
266 | twl6040->power_count = 0; |
267 | goto out; |
268 | } |
269 | } |
270 | /* Default PLL configuration after power up */ |
271 | twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL; |
272 | twl6040->sysclk = 19200000; |
273 | twl6040->mclk = 32768; |
274 | } else { |
275 | /* already powered-down */ |
276 | if (!twl6040->power_count) { |
277 | dev_err(twl6040->dev, |
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(twl6040->audpwron)) { |
287 | /* use AUDPWRON line */ |
288 | gpio_set_value(twl6040->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_manual(twl6040); |
295 | } |
296 | twl6040->sysclk = 0; |
297 | twl6040->mclk = 0; |
298 | } |
299 | |
300 | out: |
301 | mutex_unlock(&twl6040->mutex); |
302 | return ret; |
303 | } |
304 | EXPORT_SYMBOL(twl6040_power); |
305 | |
306 | int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, |
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 | |
317 | /* Force full reconfiguration when switching between PLL */ |
318 | if (pll_id != twl6040->pll) { |
319 | twl6040->sysclk = 0; |
320 | twl6040->mclk = 0; |
321 | } |
322 | |
323 | switch (pll_id) { |
324 | case TWL6040_SYSCLK_SEL_LPPLL: |
325 | /* low-power PLL divider */ |
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); |
344 | } |
345 | |
346 | /* The PLL in use has not been change, we can exit */ |
347 | if (twl6040->pll == pll_id) |
348 | break; |
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: |
364 | dev_err(twl6040->dev, |
365 | "freq_in %d not supported\n", freq_in); |
366 | ret = -EINVAL; |
367 | goto pll_out; |
368 | } |
369 | break; |
370 | case TWL6040_SYSCLK_SEL_HPPLL: |
371 | /* high-performance PLL can provide only 19.2 MHz */ |
372 | if (freq_out != 19200000) { |
373 | dev_err(twl6040->dev, |
374 | "freq_out %d not supported\n", freq_out); |
375 | ret = -EINVAL; |
376 | goto pll_out; |
377 | } |
378 | |
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 | } |
412 | |
413 | /* |
414 | * enable clock slicer to ensure input waveform is |
415 | * square |
416 | */ |
417 | hppllctl |= TWL6040_HPLLSQRENA; |
418 | |
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 | } |
429 | break; |
430 | default: |
431 | dev_err(twl6040->dev, "unknown pll id %d\n", pll_id); |
432 | ret = -EINVAL; |
433 | goto pll_out; |
434 | } |
435 | |
436 | twl6040->sysclk = freq_out; |
437 | twl6040->mclk = freq_in; |
438 | twl6040->pll = pll_id; |
439 | |
440 | pll_out: |
441 | mutex_unlock(&twl6040->mutex); |
442 | return ret; |
443 | } |
444 | EXPORT_SYMBOL(twl6040_set_pll); |
445 | |
446 | int twl6040_get_pll(struct twl6040 *twl6040) |
447 | { |
448 | if (twl6040->power_count) |
449 | return twl6040->pll; |
450 | else |
451 | return -ENODEV; |
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 | |
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 | |
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 | |
485 | static bool twl6040_readable_reg(struct device *dev, unsigned int reg) |
486 | { |
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 const struct regmap_irq twl6040_irqs[] = { |
502 | { .reg_offset = 0, .mask = TWL6040_THINT, }, |
503 | { .reg_offset = 0, .mask = TWL6040_PLUGINT | TWL6040_UNPLUGINT, }, |
504 | { .reg_offset = 0, .mask = TWL6040_HOOKINT, }, |
505 | { .reg_offset = 0, .mask = TWL6040_HFINT, }, |
506 | { .reg_offset = 0, .mask = TWL6040_VIBINT, }, |
507 | { .reg_offset = 0, .mask = TWL6040_READYINT, }, |
508 | }; |
509 | |
510 | static struct regmap_irq_chip twl6040_irq_chip = { |
511 | .name = "twl6040", |
512 | .irqs = twl6040_irqs, |
513 | .num_irqs = ARRAY_SIZE(twl6040_irqs), |
514 | |
515 | .num_regs = 1, |
516 | .status_base = TWL6040_REG_INTID, |
517 | .mask_base = TWL6040_REG_INTMR, |
518 | }; |
519 | |
520 | static int twl6040_probe(struct i2c_client *client, |
521 | const struct i2c_device_id *id) |
522 | { |
523 | struct twl6040_platform_data *pdata = client->dev.platform_data; |
524 | struct device_node *node = client->dev.of_node; |
525 | struct twl6040 *twl6040; |
526 | struct mfd_cell *cell = NULL; |
527 | int irq, ret, children = 0; |
528 | |
529 | if (!pdata && !node) { |
530 | dev_err(&client->dev, "Platform data is missing\n"); |
531 | return -EINVAL; |
532 | } |
533 | |
534 | /* In order to operate correctly we need valid interrupt config */ |
535 | if (!client->irq) { |
536 | dev_err(&client->dev, "Invalid IRQ configuration\n"); |
537 | return -EINVAL; |
538 | } |
539 | |
540 | twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), |
541 | GFP_KERNEL); |
542 | if (!twl6040) { |
543 | ret = -ENOMEM; |
544 | goto err; |
545 | } |
546 | |
547 | twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config); |
548 | if (IS_ERR(twl6040->regmap)) { |
549 | ret = PTR_ERR(twl6040->regmap); |
550 | goto err; |
551 | } |
552 | |
553 | i2c_set_clientdata(client, twl6040); |
554 | |
555 | twl6040->supplies[0].supply = "vio"; |
556 | twl6040->supplies[1].supply = "v2v1"; |
557 | ret = regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES, |
558 | twl6040->supplies); |
559 | if (ret != 0) { |
560 | dev_err(&client->dev, "Failed to get supplies: %d\n", ret); |
561 | goto regulator_get_err; |
562 | } |
563 | |
564 | ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
565 | if (ret != 0) { |
566 | dev_err(&client->dev, "Failed to enable supplies: %d\n", ret); |
567 | goto power_err; |
568 | } |
569 | |
570 | twl6040->dev = &client->dev; |
571 | twl6040->irq = client->irq; |
572 | |
573 | mutex_init(&twl6040->mutex); |
574 | init_completion(&twl6040->ready); |
575 | |
576 | twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); |
577 | |
578 | /* ERRATA: Automatic power-up is not possible in ES1.0 */ |
579 | if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) { |
580 | if (pdata) |
581 | twl6040->audpwron = pdata->audpwron_gpio; |
582 | else |
583 | twl6040->audpwron = of_get_named_gpio(node, |
584 | "ti,audpwron-gpio", 0); |
585 | } else |
586 | twl6040->audpwron = -EINVAL; |
587 | |
588 | if (gpio_is_valid(twl6040->audpwron)) { |
589 | ret = gpio_request_one(twl6040->audpwron, GPIOF_OUT_INIT_LOW, |
590 | "audpwron"); |
591 | if (ret) |
592 | goto gpio_err; |
593 | } |
594 | |
595 | ret = regmap_add_irq_chip(twl6040->regmap, twl6040->irq, |
596 | IRQF_ONESHOT, 0, &twl6040_irq_chip, |
597 | &twl6040->irq_data); |
598 | if (ret < 0) |
599 | goto irq_init_err; |
600 | |
601 | twl6040->irq_ready = regmap_irq_get_virq(twl6040->irq_data, |
602 | TWL6040_IRQ_READY); |
603 | twl6040->irq_th = regmap_irq_get_virq(twl6040->irq_data, |
604 | TWL6040_IRQ_TH); |
605 | |
606 | ret = request_threaded_irq(twl6040->irq_ready, NULL, |
607 | twl6040_readyint_handler, IRQF_ONESHOT, |
608 | "twl6040_irq_ready", twl6040); |
609 | if (ret) { |
610 | dev_err(twl6040->dev, "READY IRQ request failed: %d\n", ret); |
611 | goto readyirq_err; |
612 | } |
613 | |
614 | ret = request_threaded_irq(twl6040->irq_th, NULL, |
615 | twl6040_thint_handler, IRQF_ONESHOT, |
616 | "twl6040_irq_th", twl6040); |
617 | if (ret) { |
618 | dev_err(twl6040->dev, "Thermal IRQ request failed: %d\n", ret); |
619 | goto thirq_err; |
620 | } |
621 | |
622 | /* dual-access registers controlled by I2C only */ |
623 | twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL); |
624 | |
625 | /* |
626 | * The main functionality of twl6040 to provide audio on OMAP4+ systems. |
627 | * We can add the ASoC codec child whenever this driver has been loaded. |
628 | * The ASoC codec can work without pdata, pass the platform_data only if |
629 | * it has been provided. |
630 | */ |
631 | irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_PLUG); |
632 | cell = &twl6040->cells[children]; |
633 | cell->name = "twl6040-codec"; |
634 | twl6040_codec_rsrc[0].start = irq; |
635 | twl6040_codec_rsrc[0].end = irq; |
636 | cell->resources = twl6040_codec_rsrc; |
637 | cell->num_resources = ARRAY_SIZE(twl6040_codec_rsrc); |
638 | if (pdata && pdata->codec) { |
639 | cell->platform_data = pdata->codec; |
640 | cell->pdata_size = sizeof(*pdata->codec); |
641 | } |
642 | children++; |
643 | |
644 | if (twl6040_has_vibra(pdata, node)) { |
645 | irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_VIB); |
646 | |
647 | cell = &twl6040->cells[children]; |
648 | cell->name = "twl6040-vibra"; |
649 | twl6040_vibra_rsrc[0].start = irq; |
650 | twl6040_vibra_rsrc[0].end = irq; |
651 | cell->resources = twl6040_vibra_rsrc; |
652 | cell->num_resources = ARRAY_SIZE(twl6040_vibra_rsrc); |
653 | |
654 | if (pdata && pdata->vibra) { |
655 | cell->platform_data = pdata->vibra; |
656 | cell->pdata_size = sizeof(*pdata->vibra); |
657 | } |
658 | children++; |
659 | } |
660 | |
661 | /* |
662 | * Enable the GPO driver in the following cases: |
663 | * DT booted kernel or legacy boot with valid gpo platform_data |
664 | */ |
665 | if (!pdata || (pdata && pdata->gpo)) { |
666 | cell = &twl6040->cells[children]; |
667 | cell->name = "twl6040-gpo"; |
668 | |
669 | if (pdata) { |
670 | cell->platform_data = pdata->gpo; |
671 | cell->pdata_size = sizeof(*pdata->gpo); |
672 | } |
673 | children++; |
674 | } |
675 | |
676 | ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children, |
677 | NULL, 0, NULL); |
678 | if (ret) |
679 | goto mfd_err; |
680 | |
681 | return 0; |
682 | |
683 | mfd_err: |
684 | free_irq(twl6040->irq_th, twl6040); |
685 | thirq_err: |
686 | free_irq(twl6040->irq_ready, twl6040); |
687 | readyirq_err: |
688 | regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
689 | irq_init_err: |
690 | if (gpio_is_valid(twl6040->audpwron)) |
691 | gpio_free(twl6040->audpwron); |
692 | gpio_err: |
693 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
694 | power_err: |
695 | regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
696 | regulator_get_err: |
697 | i2c_set_clientdata(client, NULL); |
698 | err: |
699 | return ret; |
700 | } |
701 | |
702 | static int twl6040_remove(struct i2c_client *client) |
703 | { |
704 | struct twl6040 *twl6040 = i2c_get_clientdata(client); |
705 | |
706 | if (twl6040->power_count) |
707 | twl6040_power(twl6040, 0); |
708 | |
709 | if (gpio_is_valid(twl6040->audpwron)) |
710 | gpio_free(twl6040->audpwron); |
711 | |
712 | free_irq(twl6040->irq_ready, twl6040); |
713 | free_irq(twl6040->irq_th, twl6040); |
714 | regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
715 | |
716 | mfd_remove_devices(&client->dev); |
717 | i2c_set_clientdata(client, NULL); |
718 | |
719 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
720 | regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
721 | |
722 | return 0; |
723 | } |
724 | |
725 | static const struct i2c_device_id twl6040_i2c_id[] = { |
726 | { "twl6040", 0, }, |
727 | { "twl6041", 0, }, |
728 | { }, |
729 | }; |
730 | MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id); |
731 | |
732 | static struct i2c_driver twl6040_driver = { |
733 | .driver = { |
734 | .name = "twl6040", |
735 | .owner = THIS_MODULE, |
736 | }, |
737 | .probe = twl6040_probe, |
738 | .remove = twl6040_remove, |
739 | .id_table = twl6040_i2c_id, |
740 | }; |
741 | |
742 | module_i2c_driver(twl6040_driver); |
743 | |
744 | MODULE_DESCRIPTION("TWL6040 MFD"); |
745 | MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>"); |
746 | MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>"); |
747 | MODULE_LICENSE("GPL"); |
748 | MODULE_ALIAS("platform:twl6040"); |
749 |
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