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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> | |
5af7df6b | 30 | #include <linux/err.h> |
f19b2823 | 31 | #include <linux/platform_device.h> |
37e13cec PU |
32 | #include <linux/of.h> |
33 | #include <linux/of_irq.h> | |
34 | #include <linux/of_gpio.h> | |
35 | #include <linux/of_platform.h> | |
f19b2823 MLC |
36 | #include <linux/gpio.h> |
37 | #include <linux/delay.h> | |
8eaeb939 PU |
38 | #include <linux/i2c.h> |
39 | #include <linux/regmap.h> | |
40 | #include <linux/err.h> | |
f19b2823 MLC |
41 | #include <linux/mfd/core.h> |
42 | #include <linux/mfd/twl6040.h> | |
5af7df6b | 43 | #include <linux/regulator/consumer.h> |
f19b2823 | 44 | |
31b402e3 | 45 | #define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1) |
5af7df6b | 46 | #define TWL6040_NUM_SUPPLIES (2) |
31b402e3 | 47 | |
ca2cad6a SO |
48 | static bool twl6040_has_vibra(struct twl6040_platform_data *pdata, |
49 | struct device_node *node) | |
50 | { | |
51 | if (pdata && pdata->vibra) | |
52 | return true; | |
53 | ||
54 | #ifdef CONFIG_OF | |
55 | if (of_find_node_by_name(node, "vibra")) | |
56 | return true; | |
57 | #endif | |
58 | ||
59 | return false; | |
60 | } | |
61 | ||
f19b2823 MLC |
62 | int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) |
63 | { | |
64 | int ret; | |
8eaeb939 | 65 | unsigned int val; |
f19b2823 | 66 | |
31b402e3 PU |
67 | /* Vibra control registers from cache */ |
68 | if (unlikely(reg == TWL6040_REG_VIBCTLL || | |
69 | reg == TWL6040_REG_VIBCTLR)) { | |
70 | val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)]; | |
71 | } else { | |
8eaeb939 | 72 | ret = regmap_read(twl6040->regmap, reg, &val); |
c600040f | 73 | if (ret < 0) |
31b402e3 | 74 | return ret; |
f19b2823 | 75 | } |
f19b2823 MLC |
76 | |
77 | return val; | |
78 | } | |
79 | EXPORT_SYMBOL(twl6040_reg_read); | |
80 | ||
81 | int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) | |
82 | { | |
83 | int ret; | |
84 | ||
8eaeb939 | 85 | ret = regmap_write(twl6040->regmap, reg, val); |
31b402e3 PU |
86 | /* Cache the vibra control registers */ |
87 | if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR) | |
88 | twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val; | |
f19b2823 MLC |
89 | |
90 | return ret; | |
91 | } | |
92 | EXPORT_SYMBOL(twl6040_reg_write); | |
93 | ||
94 | int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
95 | { | |
c600040f | 96 | return regmap_update_bits(twl6040->regmap, reg, mask, mask); |
f19b2823 MLC |
97 | } |
98 | EXPORT_SYMBOL(twl6040_set_bits); | |
99 | ||
100 | int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
101 | { | |
c600040f | 102 | return regmap_update_bits(twl6040->regmap, reg, mask, 0); |
f19b2823 MLC |
103 | } |
104 | EXPORT_SYMBOL(twl6040_clear_bits); | |
105 | ||
106 | /* twl6040 codec manual power-up sequence */ | |
f9be1343 | 107 | static int twl6040_power_up_manual(struct twl6040 *twl6040) |
f19b2823 MLC |
108 | { |
109 | u8 ldoctl, ncpctl, lppllctl; | |
110 | int ret; | |
111 | ||
112 | /* enable high-side LDO, reference system and internal oscillator */ | |
113 | ldoctl = TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA; | |
114 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
115 | if (ret) | |
116 | return ret; | |
117 | usleep_range(10000, 10500); | |
118 | ||
119 | /* enable negative charge pump */ | |
120 | ncpctl = TWL6040_NCPENA; | |
121 | ret = twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
122 | if (ret) | |
123 | goto ncp_err; | |
124 | usleep_range(1000, 1500); | |
125 | ||
126 | /* enable low-side LDO */ | |
127 | ldoctl |= TWL6040_LSLDOENA; | |
128 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
129 | if (ret) | |
130 | goto lsldo_err; | |
131 | usleep_range(1000, 1500); | |
132 | ||
133 | /* enable low-power PLL */ | |
134 | lppllctl = TWL6040_LPLLENA; | |
135 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
136 | if (ret) | |
137 | goto lppll_err; | |
138 | usleep_range(5000, 5500); | |
139 | ||
140 | /* disable internal oscillator */ | |
141 | ldoctl &= ~TWL6040_OSCENA; | |
142 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
143 | if (ret) | |
144 | goto osc_err; | |
145 | ||
146 | return 0; | |
147 | ||
148 | osc_err: | |
149 | lppllctl &= ~TWL6040_LPLLENA; | |
150 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
151 | lppll_err: | |
152 | ldoctl &= ~TWL6040_LSLDOENA; | |
153 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
154 | lsldo_err: | |
155 | ncpctl &= ~TWL6040_NCPENA; | |
156 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
157 | ncp_err: | |
158 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
159 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
160 | ||
f9be1343 | 161 | dev_err(twl6040->dev, "manual power-up failed\n"); |
f19b2823 MLC |
162 | return ret; |
163 | } | |
164 | ||
165 | /* twl6040 manual power-down sequence */ | |
f9be1343 | 166 | static void twl6040_power_down_manual(struct twl6040 *twl6040) |
f19b2823 MLC |
167 | { |
168 | u8 ncpctl, ldoctl, lppllctl; | |
169 | ||
170 | ncpctl = twl6040_reg_read(twl6040, TWL6040_REG_NCPCTL); | |
171 | ldoctl = twl6040_reg_read(twl6040, TWL6040_REG_LDOCTL); | |
172 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
173 | ||
174 | /* enable internal oscillator */ | |
175 | ldoctl |= TWL6040_OSCENA; | |
176 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
177 | usleep_range(1000, 1500); | |
178 | ||
179 | /* disable low-power PLL */ | |
180 | lppllctl &= ~TWL6040_LPLLENA; | |
181 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
182 | ||
183 | /* disable low-side LDO */ | |
184 | ldoctl &= ~TWL6040_LSLDOENA; | |
185 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
186 | ||
187 | /* disable negative charge pump */ | |
188 | ncpctl &= ~TWL6040_NCPENA; | |
189 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
190 | ||
191 | /* disable high-side LDO, reference system and internal oscillator */ | |
192 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
193 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
194 | } | |
195 | ||
196 | static irqreturn_t twl6040_naudint_handler(int irq, void *data) | |
197 | { | |
198 | struct twl6040 *twl6040 = data; | |
199 | u8 intid, status; | |
200 | ||
201 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); | |
202 | ||
203 | if (intid & TWL6040_READYINT) | |
204 | complete(&twl6040->ready); | |
205 | ||
206 | if (intid & TWL6040_THINT) { | |
207 | status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS); | |
208 | if (status & TWL6040_TSHUTDET) { | |
2d7c957e | 209 | dev_warn(twl6040->dev, |
f19b2823 MLC |
210 | "Thermal shutdown, powering-off"); |
211 | twl6040_power(twl6040, 0); | |
212 | } else { | |
2d7c957e | 213 | dev_warn(twl6040->dev, |
f19b2823 MLC |
214 | "Leaving thermal shutdown, powering-on"); |
215 | twl6040_power(twl6040, 1); | |
216 | } | |
217 | } | |
218 | ||
219 | return IRQ_HANDLED; | |
220 | } | |
221 | ||
f9be1343 | 222 | static int twl6040_power_up_automatic(struct twl6040 *twl6040) |
f19b2823 MLC |
223 | { |
224 | int time_left; | |
f9be1343 PU |
225 | |
226 | gpio_set_value(twl6040->audpwron, 1); | |
f19b2823 MLC |
227 | |
228 | time_left = wait_for_completion_timeout(&twl6040->ready, | |
229 | msecs_to_jiffies(144)); | |
230 | if (!time_left) { | |
f9be1343 PU |
231 | u8 intid; |
232 | ||
233 | dev_warn(twl6040->dev, "timeout waiting for READYINT\n"); | |
f19b2823 MLC |
234 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); |
235 | if (!(intid & TWL6040_READYINT)) { | |
f9be1343 PU |
236 | dev_err(twl6040->dev, "automatic power-up failed\n"); |
237 | gpio_set_value(twl6040->audpwron, 0); | |
f19b2823 MLC |
238 | return -ETIMEDOUT; |
239 | } | |
240 | } | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
245 | int twl6040_power(struct twl6040 *twl6040, int on) | |
246 | { | |
f19b2823 MLC |
247 | int ret = 0; |
248 | ||
249 | mutex_lock(&twl6040->mutex); | |
250 | ||
251 | if (on) { | |
252 | /* already powered-up */ | |
253 | if (twl6040->power_count++) | |
254 | goto out; | |
255 | ||
f9be1343 PU |
256 | if (gpio_is_valid(twl6040->audpwron)) { |
257 | /* use automatic power-up sequence */ | |
258 | ret = twl6040_power_up_automatic(twl6040); | |
f19b2823 | 259 | if (ret) { |
f19b2823 MLC |
260 | twl6040->power_count = 0; |
261 | goto out; | |
262 | } | |
263 | } else { | |
264 | /* use manual power-up sequence */ | |
f9be1343 | 265 | ret = twl6040_power_up_manual(twl6040); |
f19b2823 | 266 | if (ret) { |
f19b2823 MLC |
267 | twl6040->power_count = 0; |
268 | goto out; | |
269 | } | |
270 | } | |
cfb7a33b PU |
271 | /* Default PLL configuration after power up */ |
272 | twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL; | |
f19b2823 | 273 | twl6040->sysclk = 19200000; |
f8447d6c | 274 | twl6040->mclk = 32768; |
f19b2823 MLC |
275 | } else { |
276 | /* already powered-down */ | |
277 | if (!twl6040->power_count) { | |
2d7c957e | 278 | dev_err(twl6040->dev, |
f19b2823 MLC |
279 | "device is already powered-off\n"); |
280 | ret = -EPERM; | |
281 | goto out; | |
282 | } | |
283 | ||
284 | if (--twl6040->power_count) | |
285 | goto out; | |
286 | ||
f9be1343 | 287 | if (gpio_is_valid(twl6040->audpwron)) { |
f19b2823 | 288 | /* use AUDPWRON line */ |
f9be1343 | 289 | gpio_set_value(twl6040->audpwron, 0); |
f19b2823 MLC |
290 | |
291 | /* power-down sequence latency */ | |
292 | usleep_range(500, 700); | |
293 | } else { | |
294 | /* use manual power-down sequence */ | |
f9be1343 | 295 | twl6040_power_down_manual(twl6040); |
f19b2823 | 296 | } |
f19b2823 | 297 | twl6040->sysclk = 0; |
f8447d6c | 298 | twl6040->mclk = 0; |
f19b2823 MLC |
299 | } |
300 | ||
301 | out: | |
302 | mutex_unlock(&twl6040->mutex); | |
303 | return ret; | |
304 | } | |
305 | EXPORT_SYMBOL(twl6040_power); | |
306 | ||
cfb7a33b | 307 | int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, |
f19b2823 MLC |
308 | unsigned int freq_in, unsigned int freq_out) |
309 | { | |
310 | u8 hppllctl, lppllctl; | |
311 | int ret = 0; | |
312 | ||
313 | mutex_lock(&twl6040->mutex); | |
314 | ||
315 | hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL); | |
316 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
317 | ||
2bd05db7 PU |
318 | /* Force full reconfiguration when switching between PLL */ |
319 | if (pll_id != twl6040->pll) { | |
320 | twl6040->sysclk = 0; | |
321 | twl6040->mclk = 0; | |
322 | } | |
323 | ||
cfb7a33b PU |
324 | switch (pll_id) { |
325 | case TWL6040_SYSCLK_SEL_LPPLL: | |
f19b2823 | 326 | /* low-power PLL divider */ |
2bd05db7 PU |
327 | /* Change the sysclk configuration only if it has been canged */ |
328 | if (twl6040->sysclk != freq_out) { | |
329 | switch (freq_out) { | |
330 | case 17640000: | |
331 | lppllctl |= TWL6040_LPLLFIN; | |
332 | break; | |
333 | case 19200000: | |
334 | lppllctl &= ~TWL6040_LPLLFIN; | |
335 | break; | |
336 | default: | |
337 | dev_err(twl6040->dev, | |
338 | "freq_out %d not supported\n", | |
339 | freq_out); | |
340 | ret = -EINVAL; | |
341 | goto pll_out; | |
342 | } | |
343 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
344 | lppllctl); | |
f19b2823 | 345 | } |
2bd05db7 PU |
346 | |
347 | /* The PLL in use has not been change, we can exit */ | |
348 | if (twl6040->pll == pll_id) | |
349 | break; | |
f19b2823 MLC |
350 | |
351 | switch (freq_in) { | |
352 | case 32768: | |
353 | lppllctl |= TWL6040_LPLLENA; | |
354 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
355 | lppllctl); | |
356 | mdelay(5); | |
357 | lppllctl &= ~TWL6040_HPLLSEL; | |
358 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
359 | lppllctl); | |
360 | hppllctl &= ~TWL6040_HPLLENA; | |
361 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, | |
362 | hppllctl); | |
363 | break; | |
364 | default: | |
2d7c957e | 365 | dev_err(twl6040->dev, |
f19b2823 MLC |
366 | "freq_in %d not supported\n", freq_in); |
367 | ret = -EINVAL; | |
368 | goto pll_out; | |
369 | } | |
f19b2823 | 370 | break; |
cfb7a33b | 371 | case TWL6040_SYSCLK_SEL_HPPLL: |
f19b2823 MLC |
372 | /* high-performance PLL can provide only 19.2 MHz */ |
373 | if (freq_out != 19200000) { | |
2d7c957e | 374 | dev_err(twl6040->dev, |
f19b2823 MLC |
375 | "freq_out %d not supported\n", freq_out); |
376 | ret = -EINVAL; | |
377 | goto pll_out; | |
378 | } | |
379 | ||
2bd05db7 PU |
380 | if (twl6040->mclk != freq_in) { |
381 | hppllctl &= ~TWL6040_MCLK_MSK; | |
382 | ||
383 | switch (freq_in) { | |
384 | case 12000000: | |
385 | /* PLL enabled, active mode */ | |
386 | hppllctl |= TWL6040_MCLK_12000KHZ | | |
387 | TWL6040_HPLLENA; | |
388 | break; | |
389 | case 19200000: | |
390 | /* | |
391 | * PLL disabled | |
392 | * (enable PLL if MCLK jitter quality | |
393 | * doesn't meet specification) | |
394 | */ | |
395 | hppllctl |= TWL6040_MCLK_19200KHZ; | |
396 | break; | |
397 | case 26000000: | |
398 | /* PLL enabled, active mode */ | |
399 | hppllctl |= TWL6040_MCLK_26000KHZ | | |
400 | TWL6040_HPLLENA; | |
401 | break; | |
402 | case 38400000: | |
403 | /* PLL enabled, active mode */ | |
404 | hppllctl |= TWL6040_MCLK_38400KHZ | | |
405 | TWL6040_HPLLENA; | |
406 | break; | |
407 | default: | |
408 | dev_err(twl6040->dev, | |
409 | "freq_in %d not supported\n", freq_in); | |
410 | ret = -EINVAL; | |
411 | goto pll_out; | |
412 | } | |
f19b2823 | 413 | |
f19b2823 | 414 | /* |
2bd05db7 PU |
415 | * enable clock slicer to ensure input waveform is |
416 | * square | |
f19b2823 | 417 | */ |
2bd05db7 | 418 | hppllctl |= TWL6040_HPLLSQRENA; |
f19b2823 | 419 | |
2bd05db7 PU |
420 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, |
421 | hppllctl); | |
422 | usleep_range(500, 700); | |
423 | lppllctl |= TWL6040_HPLLSEL; | |
424 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
425 | lppllctl); | |
426 | lppllctl &= ~TWL6040_LPLLENA; | |
427 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
428 | lppllctl); | |
429 | } | |
f19b2823 MLC |
430 | break; |
431 | default: | |
2d7c957e | 432 | dev_err(twl6040->dev, "unknown pll id %d\n", pll_id); |
f19b2823 MLC |
433 | ret = -EINVAL; |
434 | goto pll_out; | |
435 | } | |
436 | ||
437 | twl6040->sysclk = freq_out; | |
f8447d6c | 438 | twl6040->mclk = freq_in; |
cfb7a33b | 439 | twl6040->pll = pll_id; |
f19b2823 MLC |
440 | |
441 | pll_out: | |
442 | mutex_unlock(&twl6040->mutex); | |
443 | return ret; | |
444 | } | |
445 | EXPORT_SYMBOL(twl6040_set_pll); | |
446 | ||
cfb7a33b | 447 | int twl6040_get_pll(struct twl6040 *twl6040) |
f19b2823 | 448 | { |
cfb7a33b PU |
449 | if (twl6040->power_count) |
450 | return twl6040->pll; | |
451 | else | |
452 | return -ENODEV; | |
f19b2823 MLC |
453 | } |
454 | EXPORT_SYMBOL(twl6040_get_pll); | |
455 | ||
456 | unsigned int twl6040_get_sysclk(struct twl6040 *twl6040) | |
457 | { | |
458 | return twl6040->sysclk; | |
459 | } | |
460 | EXPORT_SYMBOL(twl6040_get_sysclk); | |
461 | ||
70601ec1 PU |
462 | /* Get the combined status of the vibra control register */ |
463 | int twl6040_get_vibralr_status(struct twl6040 *twl6040) | |
464 | { | |
465 | u8 status; | |
466 | ||
467 | status = twl6040->vibra_ctrl_cache[0] | twl6040->vibra_ctrl_cache[1]; | |
468 | status &= (TWL6040_VIBENA | TWL6040_VIBSEL); | |
469 | ||
470 | return status; | |
471 | } | |
472 | EXPORT_SYMBOL(twl6040_get_vibralr_status); | |
473 | ||
0f962ae2 PU |
474 | static struct resource twl6040_vibra_rsrc[] = { |
475 | { | |
476 | .flags = IORESOURCE_IRQ, | |
477 | }, | |
478 | }; | |
479 | ||
480 | static struct resource twl6040_codec_rsrc[] = { | |
481 | { | |
482 | .flags = IORESOURCE_IRQ, | |
483 | }, | |
484 | }; | |
485 | ||
8eaeb939 | 486 | static bool twl6040_readable_reg(struct device *dev, unsigned int reg) |
f19b2823 | 487 | { |
8eaeb939 PU |
488 | /* Register 0 is not readable */ |
489 | if (!reg) | |
490 | return false; | |
491 | return true; | |
492 | } | |
493 | ||
494 | static struct regmap_config twl6040_regmap_config = { | |
495 | .reg_bits = 8, | |
496 | .val_bits = 8, | |
497 | .max_register = TWL6040_REG_STATUS, /* 0x2e */ | |
498 | ||
499 | .readable_reg = twl6040_readable_reg, | |
500 | }; | |
501 | ||
502 | static int __devinit twl6040_probe(struct i2c_client *client, | |
503 | const struct i2c_device_id *id) | |
504 | { | |
505 | struct twl6040_platform_data *pdata = client->dev.platform_data; | |
37e13cec | 506 | struct device_node *node = client->dev.of_node; |
f19b2823 MLC |
507 | struct twl6040 *twl6040; |
508 | struct mfd_cell *cell = NULL; | |
1f01d60e | 509 | int irq, ret, children = 0; |
f19b2823 | 510 | |
37e13cec | 511 | if (!pdata && !node) { |
8eaeb939 | 512 | dev_err(&client->dev, "Platform data is missing\n"); |
f19b2823 MLC |
513 | return -EINVAL; |
514 | } | |
515 | ||
d20e1d21 | 516 | /* In order to operate correctly we need valid interrupt config */ |
6712419d | 517 | if (!client->irq) { |
8eaeb939 | 518 | dev_err(&client->dev, "Invalid IRQ configuration\n"); |
d20e1d21 PU |
519 | return -EINVAL; |
520 | } | |
521 | ||
8eaeb939 PU |
522 | twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), |
523 | GFP_KERNEL); | |
524 | if (!twl6040) { | |
525 | ret = -ENOMEM; | |
526 | goto err; | |
527 | } | |
528 | ||
bbf6adc1 | 529 | twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config); |
8eaeb939 PU |
530 | if (IS_ERR(twl6040->regmap)) { |
531 | ret = PTR_ERR(twl6040->regmap); | |
532 | goto err; | |
533 | } | |
f19b2823 | 534 | |
8eaeb939 | 535 | i2c_set_clientdata(client, twl6040); |
f19b2823 | 536 | |
5af7df6b PU |
537 | twl6040->supplies[0].supply = "vio"; |
538 | twl6040->supplies[1].supply = "v2v1"; | |
539 | ret = regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES, | |
540 | twl6040->supplies); | |
541 | if (ret != 0) { | |
542 | dev_err(&client->dev, "Failed to get supplies: %d\n", ret); | |
543 | goto regulator_get_err; | |
544 | } | |
545 | ||
546 | ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
547 | if (ret != 0) { | |
548 | dev_err(&client->dev, "Failed to enable supplies: %d\n", ret); | |
549 | goto power_err; | |
550 | } | |
551 | ||
8eaeb939 PU |
552 | twl6040->dev = &client->dev; |
553 | twl6040->irq = client->irq; | |
f19b2823 MLC |
554 | |
555 | mutex_init(&twl6040->mutex); | |
f19b2823 MLC |
556 | init_completion(&twl6040->ready); |
557 | ||
558 | twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); | |
559 | ||
77f63e06 | 560 | /* ERRATA: Automatic power-up is not possible in ES1.0 */ |
37e13cec PU |
561 | if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) { |
562 | if (pdata) | |
563 | twl6040->audpwron = pdata->audpwron_gpio; | |
564 | else | |
565 | twl6040->audpwron = of_get_named_gpio(node, | |
566 | "ti,audpwron-gpio", 0); | |
567 | } else | |
77f63e06 PU |
568 | twl6040->audpwron = -EINVAL; |
569 | ||
f19b2823 | 570 | if (gpio_is_valid(twl6040->audpwron)) { |
b04edb93 AL |
571 | ret = gpio_request_one(twl6040->audpwron, GPIOF_OUT_INIT_LOW, |
572 | "audpwron"); | |
f19b2823 | 573 | if (ret) |
5af7df6b | 574 | goto gpio_err; |
f19b2823 MLC |
575 | } |
576 | ||
d20e1d21 PU |
577 | /* codec interrupt */ |
578 | ret = twl6040_irq_init(twl6040); | |
579 | if (ret) | |
5af7df6b | 580 | goto irq_init_err; |
d20e1d21 | 581 | |
1b7c4725 | 582 | ret = request_threaded_irq(twl6040->irq_base + TWL6040_IRQ_READY, |
09e09069 | 583 | NULL, twl6040_naudint_handler, IRQF_ONESHOT, |
1b7c4725 | 584 | "twl6040_irq_ready", twl6040); |
d20e1d21 PU |
585 | if (ret) { |
586 | dev_err(twl6040->dev, "READY IRQ request failed: %d\n", | |
587 | ret); | |
588 | goto irq_err; | |
f19b2823 MLC |
589 | } |
590 | ||
591 | /* dual-access registers controlled by I2C only */ | |
592 | twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL); | |
593 | ||
1f01d60e PU |
594 | /* |
595 | * The main functionality of twl6040 to provide audio on OMAP4+ systems. | |
596 | * We can add the ASoC codec child whenever this driver has been loaded. | |
597 | * The ASoC codec can work without pdata, pass the platform_data only if | |
598 | * it has been provided. | |
599 | */ | |
600 | irq = twl6040->irq_base + TWL6040_IRQ_PLUG; | |
601 | cell = &twl6040->cells[children]; | |
602 | cell->name = "twl6040-codec"; | |
603 | twl6040_codec_rsrc[0].start = irq; | |
604 | twl6040_codec_rsrc[0].end = irq; | |
605 | cell->resources = twl6040_codec_rsrc; | |
606 | cell->num_resources = ARRAY_SIZE(twl6040_codec_rsrc); | |
37e13cec | 607 | if (pdata && pdata->codec) { |
6c448637 PU |
608 | cell->platform_data = pdata->codec; |
609 | cell->pdata_size = sizeof(*pdata->codec); | |
f19b2823 | 610 | } |
1f01d60e | 611 | children++; |
f19b2823 | 612 | |
ca2cad6a | 613 | if (twl6040_has_vibra(pdata, node)) { |
1f01d60e | 614 | irq = twl6040->irq_base + TWL6040_IRQ_VIB; |
0f962ae2 | 615 | |
f19b2823 MLC |
616 | cell = &twl6040->cells[children]; |
617 | cell->name = "twl6040-vibra"; | |
0f962ae2 PU |
618 | twl6040_vibra_rsrc[0].start = irq; |
619 | twl6040_vibra_rsrc[0].end = irq; | |
620 | cell->resources = twl6040_vibra_rsrc; | |
621 | cell->num_resources = ARRAY_SIZE(twl6040_vibra_rsrc); | |
622 | ||
37e13cec PU |
623 | if (pdata && pdata->vibra) { |
624 | cell->platform_data = pdata->vibra; | |
625 | cell->pdata_size = sizeof(*pdata->vibra); | |
626 | } | |
f19b2823 MLC |
627 | children++; |
628 | } | |
629 | ||
5cbe786a PU |
630 | /* |
631 | * Enable the GPO driver in the following cases: | |
632 | * DT booted kernel or legacy boot with valid gpo platform_data | |
633 | */ | |
634 | if (!pdata || (pdata && pdata->gpo)) { | |
635 | cell = &twl6040->cells[children]; | |
636 | cell->name = "twl6040-gpo"; | |
637 | ||
638 | if (pdata) { | |
639 | cell->platform_data = pdata->gpo; | |
640 | cell->pdata_size = sizeof(*pdata->gpo); | |
641 | } | |
642 | children++; | |
643 | } | |
644 | ||
1f01d60e | 645 | ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children, |
55692af5 | 646 | NULL, 0, NULL); |
1f01d60e | 647 | if (ret) |
f19b2823 | 648 | goto mfd_err; |
f19b2823 MLC |
649 | |
650 | return 0; | |
651 | ||
652 | mfd_err: | |
1b7c4725 | 653 | free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040); |
f19b2823 | 654 | irq_err: |
d20e1d21 | 655 | twl6040_irq_exit(twl6040); |
5af7df6b | 656 | irq_init_err: |
f19b2823 MLC |
657 | if (gpio_is_valid(twl6040->audpwron)) |
658 | gpio_free(twl6040->audpwron); | |
5af7df6b PU |
659 | gpio_err: |
660 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
661 | power_err: | |
662 | regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
663 | regulator_get_err: | |
8eaeb939 | 664 | i2c_set_clientdata(client, NULL); |
8eaeb939 | 665 | err: |
f19b2823 MLC |
666 | return ret; |
667 | } | |
668 | ||
8eaeb939 | 669 | static int __devexit twl6040_remove(struct i2c_client *client) |
f19b2823 | 670 | { |
8eaeb939 | 671 | struct twl6040 *twl6040 = i2c_get_clientdata(client); |
f19b2823 MLC |
672 | |
673 | if (twl6040->power_count) | |
674 | twl6040_power(twl6040, 0); | |
675 | ||
676 | if (gpio_is_valid(twl6040->audpwron)) | |
677 | gpio_free(twl6040->audpwron); | |
678 | ||
1b7c4725 | 679 | free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040); |
d20e1d21 | 680 | twl6040_irq_exit(twl6040); |
f19b2823 | 681 | |
8eaeb939 PU |
682 | mfd_remove_devices(&client->dev); |
683 | i2c_set_clientdata(client, NULL); | |
f19b2823 | 684 | |
5af7df6b PU |
685 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
686 | regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
687 | ||
f19b2823 MLC |
688 | return 0; |
689 | } | |
690 | ||
8eaeb939 PU |
691 | static const struct i2c_device_id twl6040_i2c_id[] = { |
692 | { "twl6040", 0, }, | |
1fc74aef | 693 | { "twl6041", 0, }, |
8eaeb939 PU |
694 | { }, |
695 | }; | |
696 | MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id); | |
697 | ||
698 | static struct i2c_driver twl6040_driver = { | |
699 | .driver = { | |
700 | .name = "twl6040", | |
701 | .owner = THIS_MODULE, | |
702 | }, | |
f19b2823 MLC |
703 | .probe = twl6040_probe, |
704 | .remove = __devexit_p(twl6040_remove), | |
8eaeb939 | 705 | .id_table = twl6040_i2c_id, |
f19b2823 MLC |
706 | }; |
707 | ||
8eaeb939 | 708 | module_i2c_driver(twl6040_driver); |
f19b2823 MLC |
709 | |
710 | MODULE_DESCRIPTION("TWL6040 MFD"); | |
711 | MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>"); | |
712 | MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>"); | |
713 | MODULE_LICENSE("GPL"); | |
714 | MODULE_ALIAS("platform:twl6040"); |