Commit | Line | Data |
---|---|---|
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> | |
5af7df6b | 30 | #include <linux/err.h> |
f19b2823 MLC |
31 | #include <linux/platform_device.h> |
32 | #include <linux/gpio.h> | |
33 | #include <linux/delay.h> | |
8eaeb939 PU |
34 | #include <linux/i2c.h> |
35 | #include <linux/regmap.h> | |
36 | #include <linux/err.h> | |
f19b2823 MLC |
37 | #include <linux/mfd/core.h> |
38 | #include <linux/mfd/twl6040.h> | |
5af7df6b | 39 | #include <linux/regulator/consumer.h> |
f19b2823 | 40 | |
31b402e3 | 41 | #define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1) |
5af7df6b | 42 | #define TWL6040_NUM_SUPPLIES (2) |
31b402e3 | 43 | |
f19b2823 MLC |
44 | int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) |
45 | { | |
46 | int ret; | |
8eaeb939 | 47 | unsigned int val; |
f19b2823 MLC |
48 | |
49 | mutex_lock(&twl6040->io_mutex); | |
31b402e3 PU |
50 | /* Vibra control registers from cache */ |
51 | if (unlikely(reg == TWL6040_REG_VIBCTLL || | |
52 | reg == TWL6040_REG_VIBCTLR)) { | |
53 | val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)]; | |
54 | } else { | |
8eaeb939 | 55 | ret = regmap_read(twl6040->regmap, reg, &val); |
31b402e3 PU |
56 | if (ret < 0) { |
57 | mutex_unlock(&twl6040->io_mutex); | |
58 | return ret; | |
59 | } | |
f19b2823 MLC |
60 | } |
61 | mutex_unlock(&twl6040->io_mutex); | |
62 | ||
63 | return val; | |
64 | } | |
65 | EXPORT_SYMBOL(twl6040_reg_read); | |
66 | ||
67 | int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) | |
68 | { | |
69 | int ret; | |
70 | ||
71 | mutex_lock(&twl6040->io_mutex); | |
8eaeb939 | 72 | ret = regmap_write(twl6040->regmap, reg, val); |
31b402e3 PU |
73 | /* Cache the vibra control registers */ |
74 | if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR) | |
75 | twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val; | |
f19b2823 MLC |
76 | mutex_unlock(&twl6040->io_mutex); |
77 | ||
78 | return ret; | |
79 | } | |
80 | EXPORT_SYMBOL(twl6040_reg_write); | |
81 | ||
82 | int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
83 | { | |
84 | int ret; | |
f19b2823 MLC |
85 | |
86 | mutex_lock(&twl6040->io_mutex); | |
8eaeb939 | 87 | ret = regmap_update_bits(twl6040->regmap, reg, mask, mask); |
f19b2823 MLC |
88 | mutex_unlock(&twl6040->io_mutex); |
89 | return ret; | |
90 | } | |
91 | EXPORT_SYMBOL(twl6040_set_bits); | |
92 | ||
93 | int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
94 | { | |
95 | int ret; | |
f19b2823 MLC |
96 | |
97 | mutex_lock(&twl6040->io_mutex); | |
8eaeb939 | 98 | ret = regmap_update_bits(twl6040->regmap, reg, mask, 0); |
f19b2823 MLC |
99 | mutex_unlock(&twl6040->io_mutex); |
100 | return ret; | |
101 | } | |
102 | EXPORT_SYMBOL(twl6040_clear_bits); | |
103 | ||
104 | /* twl6040 codec manual power-up sequence */ | |
105 | static int twl6040_power_up(struct twl6040 *twl6040) | |
106 | { | |
107 | u8 ldoctl, ncpctl, lppllctl; | |
108 | int ret; | |
109 | ||
110 | /* enable high-side LDO, reference system and internal oscillator */ | |
111 | ldoctl = TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA; | |
112 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
113 | if (ret) | |
114 | return ret; | |
115 | usleep_range(10000, 10500); | |
116 | ||
117 | /* enable negative charge pump */ | |
118 | ncpctl = TWL6040_NCPENA; | |
119 | ret = twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
120 | if (ret) | |
121 | goto ncp_err; | |
122 | usleep_range(1000, 1500); | |
123 | ||
124 | /* enable low-side LDO */ | |
125 | ldoctl |= TWL6040_LSLDOENA; | |
126 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
127 | if (ret) | |
128 | goto lsldo_err; | |
129 | usleep_range(1000, 1500); | |
130 | ||
131 | /* enable low-power PLL */ | |
132 | lppllctl = TWL6040_LPLLENA; | |
133 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
134 | if (ret) | |
135 | goto lppll_err; | |
136 | usleep_range(5000, 5500); | |
137 | ||
138 | /* disable internal oscillator */ | |
139 | ldoctl &= ~TWL6040_OSCENA; | |
140 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
141 | if (ret) | |
142 | goto osc_err; | |
143 | ||
144 | return 0; | |
145 | ||
146 | osc_err: | |
147 | lppllctl &= ~TWL6040_LPLLENA; | |
148 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
149 | lppll_err: | |
150 | ldoctl &= ~TWL6040_LSLDOENA; | |
151 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
152 | lsldo_err: | |
153 | ncpctl &= ~TWL6040_NCPENA; | |
154 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
155 | ncp_err: | |
156 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
157 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
158 | ||
159 | return ret; | |
160 | } | |
161 | ||
162 | /* twl6040 manual power-down sequence */ | |
163 | static void twl6040_power_down(struct twl6040 *twl6040) | |
164 | { | |
165 | u8 ncpctl, ldoctl, lppllctl; | |
166 | ||
167 | ncpctl = twl6040_reg_read(twl6040, TWL6040_REG_NCPCTL); | |
168 | ldoctl = twl6040_reg_read(twl6040, TWL6040_REG_LDOCTL); | |
169 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
170 | ||
171 | /* enable internal oscillator */ | |
172 | ldoctl |= TWL6040_OSCENA; | |
173 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
174 | usleep_range(1000, 1500); | |
175 | ||
176 | /* disable low-power PLL */ | |
177 | lppllctl &= ~TWL6040_LPLLENA; | |
178 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
179 | ||
180 | /* disable low-side LDO */ | |
181 | ldoctl &= ~TWL6040_LSLDOENA; | |
182 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
183 | ||
184 | /* disable negative charge pump */ | |
185 | ncpctl &= ~TWL6040_NCPENA; | |
186 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
187 | ||
188 | /* disable high-side LDO, reference system and internal oscillator */ | |
189 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
190 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
191 | } | |
192 | ||
193 | static irqreturn_t twl6040_naudint_handler(int irq, void *data) | |
194 | { | |
195 | struct twl6040 *twl6040 = data; | |
196 | u8 intid, status; | |
197 | ||
198 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); | |
199 | ||
200 | if (intid & TWL6040_READYINT) | |
201 | complete(&twl6040->ready); | |
202 | ||
203 | if (intid & TWL6040_THINT) { | |
204 | status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS); | |
205 | if (status & TWL6040_TSHUTDET) { | |
2d7c957e | 206 | dev_warn(twl6040->dev, |
f19b2823 MLC |
207 | "Thermal shutdown, powering-off"); |
208 | twl6040_power(twl6040, 0); | |
209 | } else { | |
2d7c957e | 210 | dev_warn(twl6040->dev, |
f19b2823 MLC |
211 | "Leaving thermal shutdown, powering-on"); |
212 | twl6040_power(twl6040, 1); | |
213 | } | |
214 | } | |
215 | ||
216 | return IRQ_HANDLED; | |
217 | } | |
218 | ||
219 | static int twl6040_power_up_completion(struct twl6040 *twl6040, | |
220 | int naudint) | |
221 | { | |
222 | int time_left; | |
223 | u8 intid; | |
224 | ||
225 | time_left = wait_for_completion_timeout(&twl6040->ready, | |
226 | msecs_to_jiffies(144)); | |
227 | if (!time_left) { | |
228 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); | |
229 | if (!(intid & TWL6040_READYINT)) { | |
2d7c957e | 230 | dev_err(twl6040->dev, |
f19b2823 MLC |
231 | "timeout waiting for READYINT\n"); |
232 | return -ETIMEDOUT; | |
233 | } | |
234 | } | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
239 | int twl6040_power(struct twl6040 *twl6040, int on) | |
240 | { | |
241 | int audpwron = twl6040->audpwron; | |
242 | int naudint = twl6040->irq; | |
243 | int ret = 0; | |
244 | ||
245 | mutex_lock(&twl6040->mutex); | |
246 | ||
247 | if (on) { | |
248 | /* already powered-up */ | |
249 | if (twl6040->power_count++) | |
250 | goto out; | |
251 | ||
252 | if (gpio_is_valid(audpwron)) { | |
253 | /* use AUDPWRON line */ | |
254 | gpio_set_value(audpwron, 1); | |
255 | /* wait for power-up completion */ | |
256 | ret = twl6040_power_up_completion(twl6040, naudint); | |
257 | if (ret) { | |
2d7c957e | 258 | dev_err(twl6040->dev, |
f19b2823 MLC |
259 | "automatic power-down failed\n"); |
260 | twl6040->power_count = 0; | |
261 | goto out; | |
262 | } | |
263 | } else { | |
264 | /* use manual power-up sequence */ | |
265 | ret = twl6040_power_up(twl6040); | |
266 | if (ret) { | |
2d7c957e | 267 | dev_err(twl6040->dev, |
f19b2823 MLC |
268 | "manual power-up failed\n"); |
269 | twl6040->power_count = 0; | |
270 | goto out; | |
271 | } | |
272 | } | |
cfb7a33b PU |
273 | /* Default PLL configuration after power up */ |
274 | twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL; | |
f19b2823 | 275 | twl6040->sysclk = 19200000; |
f8447d6c | 276 | twl6040->mclk = 32768; |
f19b2823 MLC |
277 | } else { |
278 | /* already powered-down */ | |
279 | if (!twl6040->power_count) { | |
2d7c957e | 280 | dev_err(twl6040->dev, |
f19b2823 MLC |
281 | "device is already powered-off\n"); |
282 | ret = -EPERM; | |
283 | goto out; | |
284 | } | |
285 | ||
286 | if (--twl6040->power_count) | |
287 | goto out; | |
288 | ||
289 | if (gpio_is_valid(audpwron)) { | |
290 | /* use AUDPWRON line */ | |
291 | gpio_set_value(audpwron, 0); | |
292 | ||
293 | /* power-down sequence latency */ | |
294 | usleep_range(500, 700); | |
295 | } else { | |
296 | /* use manual power-down sequence */ | |
297 | twl6040_power_down(twl6040); | |
298 | } | |
f19b2823 | 299 | twl6040->sysclk = 0; |
f8447d6c | 300 | twl6040->mclk = 0; |
f19b2823 MLC |
301 | } |
302 | ||
303 | out: | |
304 | mutex_unlock(&twl6040->mutex); | |
305 | return ret; | |
306 | } | |
307 | EXPORT_SYMBOL(twl6040_power); | |
308 | ||
cfb7a33b | 309 | int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, |
f19b2823 MLC |
310 | unsigned int freq_in, unsigned int freq_out) |
311 | { | |
312 | u8 hppllctl, lppllctl; | |
313 | int ret = 0; | |
314 | ||
315 | mutex_lock(&twl6040->mutex); | |
316 | ||
317 | hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL); | |
318 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
319 | ||
2bd05db7 PU |
320 | /* Force full reconfiguration when switching between PLL */ |
321 | if (pll_id != twl6040->pll) { | |
322 | twl6040->sysclk = 0; | |
323 | twl6040->mclk = 0; | |
324 | } | |
325 | ||
cfb7a33b PU |
326 | switch (pll_id) { |
327 | case TWL6040_SYSCLK_SEL_LPPLL: | |
f19b2823 | 328 | /* low-power PLL divider */ |
2bd05db7 PU |
329 | /* Change the sysclk configuration only if it has been canged */ |
330 | if (twl6040->sysclk != freq_out) { | |
331 | switch (freq_out) { | |
332 | case 17640000: | |
333 | lppllctl |= TWL6040_LPLLFIN; | |
334 | break; | |
335 | case 19200000: | |
336 | lppllctl &= ~TWL6040_LPLLFIN; | |
337 | break; | |
338 | default: | |
339 | dev_err(twl6040->dev, | |
340 | "freq_out %d not supported\n", | |
341 | freq_out); | |
342 | ret = -EINVAL; | |
343 | goto pll_out; | |
344 | } | |
345 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
346 | lppllctl); | |
f19b2823 | 347 | } |
2bd05db7 PU |
348 | |
349 | /* The PLL in use has not been change, we can exit */ | |
350 | if (twl6040->pll == pll_id) | |
351 | break; | |
f19b2823 MLC |
352 | |
353 | switch (freq_in) { | |
354 | case 32768: | |
355 | lppllctl |= TWL6040_LPLLENA; | |
356 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
357 | lppllctl); | |
358 | mdelay(5); | |
359 | lppllctl &= ~TWL6040_HPLLSEL; | |
360 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
361 | lppllctl); | |
362 | hppllctl &= ~TWL6040_HPLLENA; | |
363 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, | |
364 | hppllctl); | |
365 | break; | |
366 | default: | |
2d7c957e | 367 | dev_err(twl6040->dev, |
f19b2823 MLC |
368 | "freq_in %d not supported\n", freq_in); |
369 | ret = -EINVAL; | |
370 | goto pll_out; | |
371 | } | |
f19b2823 | 372 | break; |
cfb7a33b | 373 | case TWL6040_SYSCLK_SEL_HPPLL: |
f19b2823 MLC |
374 | /* high-performance PLL can provide only 19.2 MHz */ |
375 | if (freq_out != 19200000) { | |
2d7c957e | 376 | dev_err(twl6040->dev, |
f19b2823 MLC |
377 | "freq_out %d not supported\n", freq_out); |
378 | ret = -EINVAL; | |
379 | goto pll_out; | |
380 | } | |
381 | ||
2bd05db7 PU |
382 | if (twl6040->mclk != freq_in) { |
383 | hppllctl &= ~TWL6040_MCLK_MSK; | |
384 | ||
385 | switch (freq_in) { | |
386 | case 12000000: | |
387 | /* PLL enabled, active mode */ | |
388 | hppllctl |= TWL6040_MCLK_12000KHZ | | |
389 | TWL6040_HPLLENA; | |
390 | break; | |
391 | case 19200000: | |
392 | /* | |
393 | * PLL disabled | |
394 | * (enable PLL if MCLK jitter quality | |
395 | * doesn't meet specification) | |
396 | */ | |
397 | hppllctl |= TWL6040_MCLK_19200KHZ; | |
398 | break; | |
399 | case 26000000: | |
400 | /* PLL enabled, active mode */ | |
401 | hppllctl |= TWL6040_MCLK_26000KHZ | | |
402 | TWL6040_HPLLENA; | |
403 | break; | |
404 | case 38400000: | |
405 | /* PLL enabled, active mode */ | |
406 | hppllctl |= TWL6040_MCLK_38400KHZ | | |
407 | TWL6040_HPLLENA; | |
408 | break; | |
409 | default: | |
410 | dev_err(twl6040->dev, | |
411 | "freq_in %d not supported\n", freq_in); | |
412 | ret = -EINVAL; | |
413 | goto pll_out; | |
414 | } | |
f19b2823 | 415 | |
f19b2823 | 416 | /* |
2bd05db7 PU |
417 | * enable clock slicer to ensure input waveform is |
418 | * square | |
f19b2823 | 419 | */ |
2bd05db7 | 420 | hppllctl |= TWL6040_HPLLSQRENA; |
f19b2823 | 421 | |
2bd05db7 PU |
422 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, |
423 | hppllctl); | |
424 | usleep_range(500, 700); | |
425 | lppllctl |= TWL6040_HPLLSEL; | |
426 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
427 | lppllctl); | |
428 | lppllctl &= ~TWL6040_LPLLENA; | |
429 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
430 | lppllctl); | |
431 | } | |
f19b2823 MLC |
432 | break; |
433 | default: | |
2d7c957e | 434 | dev_err(twl6040->dev, "unknown pll id %d\n", pll_id); |
f19b2823 MLC |
435 | ret = -EINVAL; |
436 | goto pll_out; | |
437 | } | |
438 | ||
439 | twl6040->sysclk = freq_out; | |
f8447d6c | 440 | twl6040->mclk = freq_in; |
cfb7a33b | 441 | twl6040->pll = pll_id; |
f19b2823 MLC |
442 | |
443 | pll_out: | |
444 | mutex_unlock(&twl6040->mutex); | |
445 | return ret; | |
446 | } | |
447 | EXPORT_SYMBOL(twl6040_set_pll); | |
448 | ||
cfb7a33b | 449 | int twl6040_get_pll(struct twl6040 *twl6040) |
f19b2823 | 450 | { |
cfb7a33b PU |
451 | if (twl6040->power_count) |
452 | return twl6040->pll; | |
453 | else | |
454 | return -ENODEV; | |
f19b2823 MLC |
455 | } |
456 | EXPORT_SYMBOL(twl6040_get_pll); | |
457 | ||
458 | unsigned int twl6040_get_sysclk(struct twl6040 *twl6040) | |
459 | { | |
460 | return twl6040->sysclk; | |
461 | } | |
462 | EXPORT_SYMBOL(twl6040_get_sysclk); | |
463 | ||
70601ec1 PU |
464 | /* Get the combined status of the vibra control register */ |
465 | int twl6040_get_vibralr_status(struct twl6040 *twl6040) | |
466 | { | |
467 | u8 status; | |
468 | ||
469 | status = twl6040->vibra_ctrl_cache[0] | twl6040->vibra_ctrl_cache[1]; | |
470 | status &= (TWL6040_VIBENA | TWL6040_VIBSEL); | |
471 | ||
472 | return status; | |
473 | } | |
474 | EXPORT_SYMBOL(twl6040_get_vibralr_status); | |
475 | ||
0f962ae2 PU |
476 | static struct resource twl6040_vibra_rsrc[] = { |
477 | { | |
478 | .flags = IORESOURCE_IRQ, | |
479 | }, | |
480 | }; | |
481 | ||
482 | static struct resource twl6040_codec_rsrc[] = { | |
483 | { | |
484 | .flags = IORESOURCE_IRQ, | |
485 | }, | |
486 | }; | |
487 | ||
8eaeb939 | 488 | static bool twl6040_readable_reg(struct device *dev, unsigned int reg) |
f19b2823 | 489 | { |
8eaeb939 PU |
490 | /* Register 0 is not readable */ |
491 | if (!reg) | |
492 | return false; | |
493 | return true; | |
494 | } | |
495 | ||
496 | static struct regmap_config twl6040_regmap_config = { | |
497 | .reg_bits = 8, | |
498 | .val_bits = 8, | |
499 | .max_register = TWL6040_REG_STATUS, /* 0x2e */ | |
500 | ||
501 | .readable_reg = twl6040_readable_reg, | |
502 | }; | |
503 | ||
504 | static int __devinit twl6040_probe(struct i2c_client *client, | |
505 | const struct i2c_device_id *id) | |
506 | { | |
507 | struct twl6040_platform_data *pdata = client->dev.platform_data; | |
f19b2823 MLC |
508 | struct twl6040 *twl6040; |
509 | struct mfd_cell *cell = NULL; | |
510 | int ret, children = 0; | |
511 | ||
512 | if (!pdata) { | |
8eaeb939 | 513 | dev_err(&client->dev, "Platform data is missing\n"); |
f19b2823 MLC |
514 | return -EINVAL; |
515 | } | |
516 | ||
d20e1d21 | 517 | /* In order to operate correctly we need valid interrupt config */ |
6712419d | 518 | if (!client->irq) { |
8eaeb939 | 519 | dev_err(&client->dev, "Invalid IRQ configuration\n"); |
d20e1d21 PU |
520 | return -EINVAL; |
521 | } | |
522 | ||
8eaeb939 PU |
523 | twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), |
524 | GFP_KERNEL); | |
525 | if (!twl6040) { | |
526 | ret = -ENOMEM; | |
527 | goto err; | |
528 | } | |
529 | ||
bbf6adc1 | 530 | twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config); |
8eaeb939 PU |
531 | if (IS_ERR(twl6040->regmap)) { |
532 | ret = PTR_ERR(twl6040->regmap); | |
533 | goto err; | |
534 | } | |
f19b2823 | 535 | |
8eaeb939 | 536 | i2c_set_clientdata(client, twl6040); |
f19b2823 | 537 | |
5af7df6b PU |
538 | twl6040->supplies[0].supply = "vio"; |
539 | twl6040->supplies[1].supply = "v2v1"; | |
540 | ret = regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES, | |
541 | twl6040->supplies); | |
542 | if (ret != 0) { | |
543 | dev_err(&client->dev, "Failed to get supplies: %d\n", ret); | |
544 | goto regulator_get_err; | |
545 | } | |
546 | ||
547 | ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
548 | if (ret != 0) { | |
549 | dev_err(&client->dev, "Failed to enable supplies: %d\n", ret); | |
550 | goto power_err; | |
551 | } | |
552 | ||
8eaeb939 PU |
553 | twl6040->dev = &client->dev; |
554 | twl6040->irq = client->irq; | |
f19b2823 MLC |
555 | |
556 | mutex_init(&twl6040->mutex); | |
557 | mutex_init(&twl6040->io_mutex); | |
558 | init_completion(&twl6040->ready); | |
559 | ||
560 | twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); | |
561 | ||
77f63e06 PU |
562 | /* ERRATA: Automatic power-up is not possible in ES1.0 */ |
563 | if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) | |
564 | twl6040->audpwron = pdata->audpwron_gpio; | |
565 | else | |
566 | twl6040->audpwron = -EINVAL; | |
567 | ||
f19b2823 | 568 | if (gpio_is_valid(twl6040->audpwron)) { |
b04edb93 AL |
569 | ret = gpio_request_one(twl6040->audpwron, GPIOF_OUT_INIT_LOW, |
570 | "audpwron"); | |
f19b2823 | 571 | if (ret) |
5af7df6b | 572 | goto gpio_err; |
f19b2823 MLC |
573 | } |
574 | ||
d20e1d21 PU |
575 | /* codec interrupt */ |
576 | ret = twl6040_irq_init(twl6040); | |
577 | if (ret) | |
5af7df6b | 578 | goto irq_init_err; |
d20e1d21 | 579 | |
1b7c4725 PU |
580 | ret = request_threaded_irq(twl6040->irq_base + TWL6040_IRQ_READY, |
581 | NULL, twl6040_naudint_handler, 0, | |
582 | "twl6040_irq_ready", twl6040); | |
d20e1d21 PU |
583 | if (ret) { |
584 | dev_err(twl6040->dev, "READY IRQ request failed: %d\n", | |
585 | ret); | |
586 | goto irq_err; | |
f19b2823 MLC |
587 | } |
588 | ||
589 | /* dual-access registers controlled by I2C only */ | |
590 | twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL); | |
591 | ||
592 | if (pdata->codec) { | |
0f962ae2 PU |
593 | int irq = twl6040->irq_base + TWL6040_IRQ_PLUG; |
594 | ||
f19b2823 MLC |
595 | cell = &twl6040->cells[children]; |
596 | cell->name = "twl6040-codec"; | |
0f962ae2 PU |
597 | twl6040_codec_rsrc[0].start = irq; |
598 | twl6040_codec_rsrc[0].end = irq; | |
599 | cell->resources = twl6040_codec_rsrc; | |
600 | cell->num_resources = ARRAY_SIZE(twl6040_codec_rsrc); | |
6c448637 PU |
601 | cell->platform_data = pdata->codec; |
602 | cell->pdata_size = sizeof(*pdata->codec); | |
f19b2823 MLC |
603 | children++; |
604 | } | |
605 | ||
606 | if (pdata->vibra) { | |
0f962ae2 PU |
607 | int irq = twl6040->irq_base + TWL6040_IRQ_VIB; |
608 | ||
f19b2823 MLC |
609 | cell = &twl6040->cells[children]; |
610 | cell->name = "twl6040-vibra"; | |
0f962ae2 PU |
611 | twl6040_vibra_rsrc[0].start = irq; |
612 | twl6040_vibra_rsrc[0].end = irq; | |
613 | cell->resources = twl6040_vibra_rsrc; | |
614 | cell->num_resources = ARRAY_SIZE(twl6040_vibra_rsrc); | |
615 | ||
f19b2823 MLC |
616 | cell->platform_data = pdata->vibra; |
617 | cell->pdata_size = sizeof(*pdata->vibra); | |
618 | children++; | |
619 | } | |
620 | ||
621 | if (children) { | |
8eaeb939 | 622 | ret = mfd_add_devices(&client->dev, -1, twl6040->cells, |
f19b2823 MLC |
623 | children, NULL, 0); |
624 | if (ret) | |
625 | goto mfd_err; | |
626 | } else { | |
8eaeb939 | 627 | dev_err(&client->dev, "No platform data found for children\n"); |
f19b2823 MLC |
628 | ret = -ENODEV; |
629 | goto mfd_err; | |
630 | } | |
631 | ||
632 | return 0; | |
633 | ||
634 | mfd_err: | |
1b7c4725 | 635 | free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040); |
f19b2823 | 636 | irq_err: |
d20e1d21 | 637 | twl6040_irq_exit(twl6040); |
5af7df6b | 638 | irq_init_err: |
f19b2823 MLC |
639 | if (gpio_is_valid(twl6040->audpwron)) |
640 | gpio_free(twl6040->audpwron); | |
5af7df6b PU |
641 | gpio_err: |
642 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
643 | power_err: | |
644 | regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
645 | regulator_get_err: | |
8eaeb939 | 646 | i2c_set_clientdata(client, NULL); |
8eaeb939 | 647 | err: |
f19b2823 MLC |
648 | return ret; |
649 | } | |
650 | ||
8eaeb939 | 651 | static int __devexit twl6040_remove(struct i2c_client *client) |
f19b2823 | 652 | { |
8eaeb939 | 653 | struct twl6040 *twl6040 = i2c_get_clientdata(client); |
f19b2823 MLC |
654 | |
655 | if (twl6040->power_count) | |
656 | twl6040_power(twl6040, 0); | |
657 | ||
658 | if (gpio_is_valid(twl6040->audpwron)) | |
659 | gpio_free(twl6040->audpwron); | |
660 | ||
1b7c4725 | 661 | free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040); |
d20e1d21 | 662 | twl6040_irq_exit(twl6040); |
f19b2823 | 663 | |
8eaeb939 PU |
664 | mfd_remove_devices(&client->dev); |
665 | i2c_set_clientdata(client, NULL); | |
f19b2823 | 666 | |
5af7df6b PU |
667 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
668 | regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
669 | ||
f19b2823 MLC |
670 | return 0; |
671 | } | |
672 | ||
8eaeb939 PU |
673 | static const struct i2c_device_id twl6040_i2c_id[] = { |
674 | { "twl6040", 0, }, | |
675 | { }, | |
676 | }; | |
677 | MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id); | |
678 | ||
679 | static struct i2c_driver twl6040_driver = { | |
680 | .driver = { | |
681 | .name = "twl6040", | |
682 | .owner = THIS_MODULE, | |
683 | }, | |
f19b2823 MLC |
684 | .probe = twl6040_probe, |
685 | .remove = __devexit_p(twl6040_remove), | |
8eaeb939 | 686 | .id_table = twl6040_i2c_id, |
f19b2823 MLC |
687 | }; |
688 | ||
8eaeb939 | 689 | module_i2c_driver(twl6040_driver); |
f19b2823 MLC |
690 | |
691 | MODULE_DESCRIPTION("TWL6040 MFD"); | |
692 | MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>"); | |
693 | MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>"); | |
694 | MODULE_LICENSE("GPL"); | |
695 | MODULE_ALIAS("platform:twl6040"); |