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> | |
f19b2823 MLC |
40 | #include <linux/mfd/core.h> |
41 | #include <linux/mfd/twl6040.h> | |
5af7df6b | 42 | #include <linux/regulator/consumer.h> |
f19b2823 | 43 | |
31b402e3 | 44 | #define VIBRACTRL_MEMBER(reg) ((reg == TWL6040_REG_VIBCTLL) ? 0 : 1) |
5af7df6b | 45 | #define TWL6040_NUM_SUPPLIES (2) |
31b402e3 | 46 | |
df04b624 | 47 | static bool twl6040_has_vibra(struct device_node *node) |
ca2cad6a | 48 | { |
ca2cad6a SO |
49 | #ifdef CONFIG_OF |
50 | if (of_find_node_by_name(node, "vibra")) | |
51 | return true; | |
52 | #endif | |
ca2cad6a SO |
53 | return false; |
54 | } | |
55 | ||
f19b2823 MLC |
56 | int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) |
57 | { | |
58 | int ret; | |
8eaeb939 | 59 | unsigned int val; |
f19b2823 | 60 | |
c6f39257 MB |
61 | ret = regmap_read(twl6040->regmap, reg, &val); |
62 | if (ret < 0) | |
63 | return ret; | |
f19b2823 MLC |
64 | |
65 | return val; | |
66 | } | |
67 | EXPORT_SYMBOL(twl6040_reg_read); | |
68 | ||
69 | int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) | |
70 | { | |
71 | int ret; | |
72 | ||
8eaeb939 | 73 | ret = regmap_write(twl6040->regmap, reg, val); |
f19b2823 MLC |
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 | { | |
c600040f | 81 | return regmap_update_bits(twl6040->regmap, reg, mask, mask); |
f19b2823 MLC |
82 | } |
83 | EXPORT_SYMBOL(twl6040_set_bits); | |
84 | ||
85 | int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
86 | { | |
c600040f | 87 | return regmap_update_bits(twl6040->regmap, reg, mask, 0); |
f19b2823 MLC |
88 | } |
89 | EXPORT_SYMBOL(twl6040_clear_bits); | |
90 | ||
91 | /* twl6040 codec manual power-up sequence */ | |
f9be1343 | 92 | static int twl6040_power_up_manual(struct twl6040 *twl6040) |
f19b2823 MLC |
93 | { |
94 | u8 ldoctl, ncpctl, lppllctl; | |
95 | int ret; | |
96 | ||
97 | /* enable high-side LDO, reference system and internal oscillator */ | |
98 | ldoctl = TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA; | |
99 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
100 | if (ret) | |
101 | return ret; | |
102 | usleep_range(10000, 10500); | |
103 | ||
104 | /* enable negative charge pump */ | |
105 | ncpctl = TWL6040_NCPENA; | |
106 | ret = twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
107 | if (ret) | |
108 | goto ncp_err; | |
109 | usleep_range(1000, 1500); | |
110 | ||
111 | /* enable low-side LDO */ | |
112 | ldoctl |= TWL6040_LSLDOENA; | |
113 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
114 | if (ret) | |
115 | goto lsldo_err; | |
116 | usleep_range(1000, 1500); | |
117 | ||
118 | /* enable low-power PLL */ | |
119 | lppllctl = TWL6040_LPLLENA; | |
120 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
121 | if (ret) | |
122 | goto lppll_err; | |
123 | usleep_range(5000, 5500); | |
124 | ||
125 | /* disable internal oscillator */ | |
126 | ldoctl &= ~TWL6040_OSCENA; | |
127 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
128 | if (ret) | |
129 | goto osc_err; | |
130 | ||
131 | return 0; | |
132 | ||
133 | osc_err: | |
134 | lppllctl &= ~TWL6040_LPLLENA; | |
135 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
136 | lppll_err: | |
137 | ldoctl &= ~TWL6040_LSLDOENA; | |
138 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
139 | lsldo_err: | |
140 | ncpctl &= ~TWL6040_NCPENA; | |
141 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
142 | ncp_err: | |
143 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
144 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
145 | ||
f9be1343 | 146 | dev_err(twl6040->dev, "manual power-up failed\n"); |
f19b2823 MLC |
147 | return ret; |
148 | } | |
149 | ||
150 | /* twl6040 manual power-down sequence */ | |
f9be1343 | 151 | static void twl6040_power_down_manual(struct twl6040 *twl6040) |
f19b2823 MLC |
152 | { |
153 | u8 ncpctl, ldoctl, lppllctl; | |
154 | ||
155 | ncpctl = twl6040_reg_read(twl6040, TWL6040_REG_NCPCTL); | |
156 | ldoctl = twl6040_reg_read(twl6040, TWL6040_REG_LDOCTL); | |
157 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
158 | ||
159 | /* enable internal oscillator */ | |
160 | ldoctl |= TWL6040_OSCENA; | |
161 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
162 | usleep_range(1000, 1500); | |
163 | ||
164 | /* disable low-power PLL */ | |
165 | lppllctl &= ~TWL6040_LPLLENA; | |
166 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
167 | ||
168 | /* disable low-side LDO */ | |
169 | ldoctl &= ~TWL6040_LSLDOENA; | |
170 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
171 | ||
172 | /* disable negative charge pump */ | |
173 | ncpctl &= ~TWL6040_NCPENA; | |
174 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
175 | ||
176 | /* disable high-side LDO, reference system and internal oscillator */ | |
177 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
178 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
179 | } | |
180 | ||
1ac96265 | 181 | static irqreturn_t twl6040_readyint_handler(int irq, void *data) |
f19b2823 MLC |
182 | { |
183 | struct twl6040 *twl6040 = data; | |
f19b2823 | 184 | |
1ac96265 | 185 | complete(&twl6040->ready); |
f19b2823 | 186 | |
1ac96265 PU |
187 | return IRQ_HANDLED; |
188 | } | |
f19b2823 | 189 | |
1ac96265 PU |
190 | static irqreturn_t twl6040_thint_handler(int irq, void *data) |
191 | { | |
192 | struct twl6040 *twl6040 = data; | |
193 | u8 status; | |
194 | ||
195 | status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS); | |
196 | if (status & TWL6040_TSHUTDET) { | |
197 | dev_warn(twl6040->dev, "Thermal shutdown, powering-off"); | |
198 | twl6040_power(twl6040, 0); | |
199 | } else { | |
200 | dev_warn(twl6040->dev, "Leaving thermal shutdown, powering-on"); | |
201 | twl6040_power(twl6040, 1); | |
f19b2823 MLC |
202 | } |
203 | ||
204 | return IRQ_HANDLED; | |
205 | } | |
206 | ||
f9be1343 | 207 | static int twl6040_power_up_automatic(struct twl6040 *twl6040) |
f19b2823 MLC |
208 | { |
209 | int time_left; | |
f9be1343 PU |
210 | |
211 | gpio_set_value(twl6040->audpwron, 1); | |
f19b2823 MLC |
212 | |
213 | time_left = wait_for_completion_timeout(&twl6040->ready, | |
214 | msecs_to_jiffies(144)); | |
215 | if (!time_left) { | |
f9be1343 PU |
216 | u8 intid; |
217 | ||
218 | dev_warn(twl6040->dev, "timeout waiting for READYINT\n"); | |
f19b2823 MLC |
219 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); |
220 | if (!(intid & TWL6040_READYINT)) { | |
f9be1343 PU |
221 | dev_err(twl6040->dev, "automatic power-up failed\n"); |
222 | gpio_set_value(twl6040->audpwron, 0); | |
f19b2823 MLC |
223 | return -ETIMEDOUT; |
224 | } | |
225 | } | |
226 | ||
227 | return 0; | |
228 | } | |
229 | ||
230 | int twl6040_power(struct twl6040 *twl6040, int on) | |
231 | { | |
f19b2823 MLC |
232 | int ret = 0; |
233 | ||
234 | mutex_lock(&twl6040->mutex); | |
235 | ||
236 | if (on) { | |
237 | /* already powered-up */ | |
238 | if (twl6040->power_count++) | |
239 | goto out; | |
240 | ||
f9be1343 PU |
241 | if (gpio_is_valid(twl6040->audpwron)) { |
242 | /* use automatic power-up sequence */ | |
243 | ret = twl6040_power_up_automatic(twl6040); | |
f19b2823 | 244 | if (ret) { |
f19b2823 MLC |
245 | twl6040->power_count = 0; |
246 | goto out; | |
247 | } | |
248 | } else { | |
249 | /* use manual power-up sequence */ | |
f9be1343 | 250 | ret = twl6040_power_up_manual(twl6040); |
f19b2823 | 251 | if (ret) { |
f19b2823 MLC |
252 | twl6040->power_count = 0; |
253 | goto out; | |
254 | } | |
255 | } | |
cfb7a33b PU |
256 | /* Default PLL configuration after power up */ |
257 | twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL; | |
f19b2823 | 258 | twl6040->sysclk = 19200000; |
f8447d6c | 259 | twl6040->mclk = 32768; |
f19b2823 MLC |
260 | } else { |
261 | /* already powered-down */ | |
262 | if (!twl6040->power_count) { | |
2d7c957e | 263 | dev_err(twl6040->dev, |
f19b2823 MLC |
264 | "device is already powered-off\n"); |
265 | ret = -EPERM; | |
266 | goto out; | |
267 | } | |
268 | ||
269 | if (--twl6040->power_count) | |
270 | goto out; | |
271 | ||
f9be1343 | 272 | if (gpio_is_valid(twl6040->audpwron)) { |
f19b2823 | 273 | /* use AUDPWRON line */ |
f9be1343 | 274 | gpio_set_value(twl6040->audpwron, 0); |
f19b2823 MLC |
275 | |
276 | /* power-down sequence latency */ | |
277 | usleep_range(500, 700); | |
278 | } else { | |
279 | /* use manual power-down sequence */ | |
f9be1343 | 280 | twl6040_power_down_manual(twl6040); |
f19b2823 | 281 | } |
f19b2823 | 282 | twl6040->sysclk = 0; |
f8447d6c | 283 | twl6040->mclk = 0; |
f19b2823 MLC |
284 | } |
285 | ||
286 | out: | |
287 | mutex_unlock(&twl6040->mutex); | |
288 | return ret; | |
289 | } | |
290 | EXPORT_SYMBOL(twl6040_power); | |
291 | ||
cfb7a33b | 292 | int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, |
f19b2823 MLC |
293 | unsigned int freq_in, unsigned int freq_out) |
294 | { | |
295 | u8 hppllctl, lppllctl; | |
296 | int ret = 0; | |
297 | ||
298 | mutex_lock(&twl6040->mutex); | |
299 | ||
300 | hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL); | |
301 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
302 | ||
2bd05db7 PU |
303 | /* Force full reconfiguration when switching between PLL */ |
304 | if (pll_id != twl6040->pll) { | |
305 | twl6040->sysclk = 0; | |
306 | twl6040->mclk = 0; | |
307 | } | |
308 | ||
cfb7a33b PU |
309 | switch (pll_id) { |
310 | case TWL6040_SYSCLK_SEL_LPPLL: | |
f19b2823 | 311 | /* low-power PLL divider */ |
2bd05db7 PU |
312 | /* Change the sysclk configuration only if it has been canged */ |
313 | if (twl6040->sysclk != freq_out) { | |
314 | switch (freq_out) { | |
315 | case 17640000: | |
316 | lppllctl |= TWL6040_LPLLFIN; | |
317 | break; | |
318 | case 19200000: | |
319 | lppllctl &= ~TWL6040_LPLLFIN; | |
320 | break; | |
321 | default: | |
322 | dev_err(twl6040->dev, | |
323 | "freq_out %d not supported\n", | |
324 | freq_out); | |
325 | ret = -EINVAL; | |
326 | goto pll_out; | |
327 | } | |
328 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
329 | lppllctl); | |
f19b2823 | 330 | } |
2bd05db7 PU |
331 | |
332 | /* The PLL in use has not been change, we can exit */ | |
333 | if (twl6040->pll == pll_id) | |
334 | break; | |
f19b2823 MLC |
335 | |
336 | switch (freq_in) { | |
337 | case 32768: | |
338 | lppllctl |= TWL6040_LPLLENA; | |
339 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
340 | lppllctl); | |
341 | mdelay(5); | |
342 | lppllctl &= ~TWL6040_HPLLSEL; | |
343 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
344 | lppllctl); | |
345 | hppllctl &= ~TWL6040_HPLLENA; | |
346 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, | |
347 | hppllctl); | |
348 | break; | |
349 | default: | |
2d7c957e | 350 | dev_err(twl6040->dev, |
f19b2823 MLC |
351 | "freq_in %d not supported\n", freq_in); |
352 | ret = -EINVAL; | |
353 | goto pll_out; | |
354 | } | |
f19b2823 | 355 | break; |
cfb7a33b | 356 | case TWL6040_SYSCLK_SEL_HPPLL: |
f19b2823 MLC |
357 | /* high-performance PLL can provide only 19.2 MHz */ |
358 | if (freq_out != 19200000) { | |
2d7c957e | 359 | dev_err(twl6040->dev, |
f19b2823 MLC |
360 | "freq_out %d not supported\n", freq_out); |
361 | ret = -EINVAL; | |
362 | goto pll_out; | |
363 | } | |
364 | ||
2bd05db7 PU |
365 | if (twl6040->mclk != freq_in) { |
366 | hppllctl &= ~TWL6040_MCLK_MSK; | |
367 | ||
368 | switch (freq_in) { | |
369 | case 12000000: | |
370 | /* PLL enabled, active mode */ | |
371 | hppllctl |= TWL6040_MCLK_12000KHZ | | |
372 | TWL6040_HPLLENA; | |
373 | break; | |
374 | case 19200000: | |
375 | /* | |
376 | * PLL disabled | |
377 | * (enable PLL if MCLK jitter quality | |
378 | * doesn't meet specification) | |
379 | */ | |
380 | hppllctl |= TWL6040_MCLK_19200KHZ; | |
381 | break; | |
382 | case 26000000: | |
383 | /* PLL enabled, active mode */ | |
384 | hppllctl |= TWL6040_MCLK_26000KHZ | | |
385 | TWL6040_HPLLENA; | |
386 | break; | |
387 | case 38400000: | |
388 | /* PLL enabled, active mode */ | |
389 | hppllctl |= TWL6040_MCLK_38400KHZ | | |
390 | TWL6040_HPLLENA; | |
391 | break; | |
392 | default: | |
393 | dev_err(twl6040->dev, | |
394 | "freq_in %d not supported\n", freq_in); | |
395 | ret = -EINVAL; | |
396 | goto pll_out; | |
397 | } | |
f19b2823 | 398 | |
f19b2823 | 399 | /* |
2bd05db7 PU |
400 | * enable clock slicer to ensure input waveform is |
401 | * square | |
f19b2823 | 402 | */ |
2bd05db7 | 403 | hppllctl |= TWL6040_HPLLSQRENA; |
f19b2823 | 404 | |
2bd05db7 PU |
405 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, |
406 | hppllctl); | |
407 | usleep_range(500, 700); | |
408 | lppllctl |= TWL6040_HPLLSEL; | |
409 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
410 | lppllctl); | |
411 | lppllctl &= ~TWL6040_LPLLENA; | |
412 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
413 | lppllctl); | |
414 | } | |
f19b2823 MLC |
415 | break; |
416 | default: | |
2d7c957e | 417 | dev_err(twl6040->dev, "unknown pll id %d\n", pll_id); |
f19b2823 MLC |
418 | ret = -EINVAL; |
419 | goto pll_out; | |
420 | } | |
421 | ||
422 | twl6040->sysclk = freq_out; | |
f8447d6c | 423 | twl6040->mclk = freq_in; |
cfb7a33b | 424 | twl6040->pll = pll_id; |
f19b2823 MLC |
425 | |
426 | pll_out: | |
427 | mutex_unlock(&twl6040->mutex); | |
428 | return ret; | |
429 | } | |
430 | EXPORT_SYMBOL(twl6040_set_pll); | |
431 | ||
cfb7a33b | 432 | int twl6040_get_pll(struct twl6040 *twl6040) |
f19b2823 | 433 | { |
cfb7a33b PU |
434 | if (twl6040->power_count) |
435 | return twl6040->pll; | |
436 | else | |
437 | return -ENODEV; | |
f19b2823 MLC |
438 | } |
439 | EXPORT_SYMBOL(twl6040_get_pll); | |
440 | ||
441 | unsigned int twl6040_get_sysclk(struct twl6040 *twl6040) | |
442 | { | |
443 | return twl6040->sysclk; | |
444 | } | |
445 | EXPORT_SYMBOL(twl6040_get_sysclk); | |
446 | ||
70601ec1 PU |
447 | /* Get the combined status of the vibra control register */ |
448 | int twl6040_get_vibralr_status(struct twl6040 *twl6040) | |
449 | { | |
c6f39257 MB |
450 | unsigned int reg; |
451 | int ret; | |
70601ec1 PU |
452 | u8 status; |
453 | ||
c6f39257 MB |
454 | ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLL, ®); |
455 | if (ret != 0) | |
456 | return ret; | |
457 | status = reg; | |
458 | ||
459 | ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLR, ®); | |
460 | if (ret != 0) | |
461 | return ret; | |
462 | status |= reg; | |
463 | ||
70601ec1 PU |
464 | status &= (TWL6040_VIBENA | TWL6040_VIBSEL); |
465 | ||
466 | return status; | |
467 | } | |
468 | EXPORT_SYMBOL(twl6040_get_vibralr_status); | |
469 | ||
0f962ae2 PU |
470 | static struct resource twl6040_vibra_rsrc[] = { |
471 | { | |
472 | .flags = IORESOURCE_IRQ, | |
473 | }, | |
474 | }; | |
475 | ||
476 | static struct resource twl6040_codec_rsrc[] = { | |
477 | { | |
478 | .flags = IORESOURCE_IRQ, | |
479 | }, | |
480 | }; | |
481 | ||
8eaeb939 | 482 | static bool twl6040_readable_reg(struct device *dev, unsigned int reg) |
f19b2823 | 483 | { |
8eaeb939 PU |
484 | /* Register 0 is not readable */ |
485 | if (!reg) | |
486 | return false; | |
487 | return true; | |
488 | } | |
489 | ||
c6f39257 MB |
490 | static bool twl6040_volatile_reg(struct device *dev, unsigned int reg) |
491 | { | |
492 | switch (reg) { | |
493 | case TWL6040_REG_VIBCTLL: | |
494 | case TWL6040_REG_VIBCTLR: | |
495 | case TWL6040_REG_INTMR: | |
496 | return false; | |
497 | default: | |
498 | return true; | |
499 | } | |
500 | } | |
501 | ||
8eaeb939 PU |
502 | static struct regmap_config twl6040_regmap_config = { |
503 | .reg_bits = 8, | |
504 | .val_bits = 8, | |
505 | .max_register = TWL6040_REG_STATUS, /* 0x2e */ | |
506 | ||
507 | .readable_reg = twl6040_readable_reg, | |
c6f39257 MB |
508 | .volatile_reg = twl6040_volatile_reg, |
509 | ||
510 | .cache_type = REGCACHE_RBTREE, | |
8eaeb939 PU |
511 | }; |
512 | ||
ab7edb14 PU |
513 | static const struct regmap_irq twl6040_irqs[] = { |
514 | { .reg_offset = 0, .mask = TWL6040_THINT, }, | |
515 | { .reg_offset = 0, .mask = TWL6040_PLUGINT | TWL6040_UNPLUGINT, }, | |
516 | { .reg_offset = 0, .mask = TWL6040_HOOKINT, }, | |
517 | { .reg_offset = 0, .mask = TWL6040_HFINT, }, | |
518 | { .reg_offset = 0, .mask = TWL6040_VIBINT, }, | |
519 | { .reg_offset = 0, .mask = TWL6040_READYINT, }, | |
520 | }; | |
521 | ||
522 | static struct regmap_irq_chip twl6040_irq_chip = { | |
523 | .name = "twl6040", | |
524 | .irqs = twl6040_irqs, | |
525 | .num_irqs = ARRAY_SIZE(twl6040_irqs), | |
526 | ||
527 | .num_regs = 1, | |
528 | .status_base = TWL6040_REG_INTID, | |
529 | .mask_base = TWL6040_REG_INTMR, | |
530 | }; | |
531 | ||
612b95cd GKH |
532 | static int twl6040_probe(struct i2c_client *client, |
533 | const struct i2c_device_id *id) | |
8eaeb939 | 534 | { |
37e13cec | 535 | struct device_node *node = client->dev.of_node; |
f19b2823 MLC |
536 | struct twl6040 *twl6040; |
537 | struct mfd_cell *cell = NULL; | |
1f01d60e | 538 | int irq, ret, children = 0; |
f19b2823 | 539 | |
df04b624 PU |
540 | if (!node) { |
541 | dev_err(&client->dev, "of node is missing\n"); | |
f19b2823 MLC |
542 | return -EINVAL; |
543 | } | |
544 | ||
d20e1d21 | 545 | /* In order to operate correctly we need valid interrupt config */ |
6712419d | 546 | if (!client->irq) { |
8eaeb939 | 547 | dev_err(&client->dev, "Invalid IRQ configuration\n"); |
d20e1d21 PU |
548 | return -EINVAL; |
549 | } | |
550 | ||
8eaeb939 PU |
551 | twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), |
552 | GFP_KERNEL); | |
ecc8fa1c PU |
553 | if (!twl6040) |
554 | return -ENOMEM; | |
8eaeb939 | 555 | |
bbf6adc1 | 556 | twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config); |
ecc8fa1c PU |
557 | if (IS_ERR(twl6040->regmap)) |
558 | return PTR_ERR(twl6040->regmap); | |
f19b2823 | 559 | |
8eaeb939 | 560 | i2c_set_clientdata(client, twl6040); |
f19b2823 | 561 | |
5af7df6b PU |
562 | twl6040->supplies[0].supply = "vio"; |
563 | twl6040->supplies[1].supply = "v2v1"; | |
990810b0 | 564 | ret = devm_regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES, |
37aefe9f | 565 | twl6040->supplies); |
5af7df6b PU |
566 | if (ret != 0) { |
567 | dev_err(&client->dev, "Failed to get supplies: %d\n", ret); | |
568 | goto regulator_get_err; | |
569 | } | |
570 | ||
571 | ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
572 | if (ret != 0) { | |
573 | dev_err(&client->dev, "Failed to enable supplies: %d\n", ret); | |
990810b0 | 574 | goto regulator_get_err; |
5af7df6b PU |
575 | } |
576 | ||
8eaeb939 PU |
577 | twl6040->dev = &client->dev; |
578 | twl6040->irq = client->irq; | |
f19b2823 MLC |
579 | |
580 | mutex_init(&twl6040->mutex); | |
f19b2823 MLC |
581 | init_completion(&twl6040->ready); |
582 | ||
583 | twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); | |
584 | ||
77f63e06 | 585 | /* ERRATA: Automatic power-up is not possible in ES1.0 */ |
df04b624 PU |
586 | if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) |
587 | twl6040->audpwron = of_get_named_gpio(node, | |
588 | "ti,audpwron-gpio", 0); | |
589 | else | |
77f63e06 PU |
590 | twl6040->audpwron = -EINVAL; |
591 | ||
f19b2823 | 592 | if (gpio_is_valid(twl6040->audpwron)) { |
990810b0 | 593 | ret = devm_gpio_request_one(&client->dev, twl6040->audpwron, |
37aefe9f | 594 | GPIOF_OUT_INIT_LOW, "audpwron"); |
f19b2823 | 595 | if (ret) |
5af7df6b | 596 | goto gpio_err; |
f19b2823 MLC |
597 | } |
598 | ||
37aefe9f PU |
599 | ret = regmap_add_irq_chip(twl6040->regmap, twl6040->irq, IRQF_ONESHOT, |
600 | 0, &twl6040_irq_chip,&twl6040->irq_data); | |
ab7edb14 | 601 | if (ret < 0) |
990810b0 | 602 | goto gpio_err; |
d20e1d21 | 603 | |
ab7edb14 | 604 | twl6040->irq_ready = regmap_irq_get_virq(twl6040->irq_data, |
37aefe9f | 605 | TWL6040_IRQ_READY); |
ab7edb14 | 606 | twl6040->irq_th = regmap_irq_get_virq(twl6040->irq_data, |
37aefe9f | 607 | TWL6040_IRQ_TH); |
ab7edb14 | 608 | |
990810b0 | 609 | ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_ready, NULL, |
37aefe9f PU |
610 | twl6040_readyint_handler, IRQF_ONESHOT, |
611 | "twl6040_irq_ready", twl6040); | |
d20e1d21 | 612 | if (ret) { |
1ac96265 PU |
613 | dev_err(twl6040->dev, "READY IRQ request failed: %d\n", ret); |
614 | goto readyirq_err; | |
615 | } | |
616 | ||
990810b0 | 617 | ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_th, NULL, |
37aefe9f PU |
618 | twl6040_thint_handler, IRQF_ONESHOT, |
619 | "twl6040_irq_th", twl6040); | |
1ac96265 PU |
620 | if (ret) { |
621 | dev_err(twl6040->dev, "Thermal IRQ request failed: %d\n", ret); | |
622 | goto thirq_err; | |
f19b2823 MLC |
623 | } |
624 | ||
625 | /* dual-access registers controlled by I2C only */ | |
626 | twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL); | |
627 | ||
1f01d60e PU |
628 | /* |
629 | * The main functionality of twl6040 to provide audio on OMAP4+ systems. | |
630 | * We can add the ASoC codec child whenever this driver has been loaded. | |
1f01d60e | 631 | */ |
ab7edb14 | 632 | irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_PLUG); |
1f01d60e PU |
633 | cell = &twl6040->cells[children]; |
634 | cell->name = "twl6040-codec"; | |
635 | twl6040_codec_rsrc[0].start = irq; | |
636 | twl6040_codec_rsrc[0].end = irq; | |
637 | cell->resources = twl6040_codec_rsrc; | |
638 | cell->num_resources = ARRAY_SIZE(twl6040_codec_rsrc); | |
1f01d60e | 639 | children++; |
f19b2823 | 640 | |
df04b624 PU |
641 | /* Vibra input driver support */ |
642 | if (twl6040_has_vibra(node)) { | |
ab7edb14 | 643 | irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_VIB); |
0f962ae2 | 644 | |
f19b2823 MLC |
645 | cell = &twl6040->cells[children]; |
646 | cell->name = "twl6040-vibra"; | |
0f962ae2 PU |
647 | twl6040_vibra_rsrc[0].start = irq; |
648 | twl6040_vibra_rsrc[0].end = irq; | |
649 | cell->resources = twl6040_vibra_rsrc; | |
650 | cell->num_resources = ARRAY_SIZE(twl6040_vibra_rsrc); | |
f19b2823 MLC |
651 | children++; |
652 | } | |
653 | ||
df04b624 PU |
654 | /* GPO support */ |
655 | cell = &twl6040->cells[children]; | |
656 | cell->name = "twl6040-gpo"; | |
657 | children++; | |
5cbe786a | 658 | |
1f01d60e | 659 | ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children, |
55692af5 | 660 | NULL, 0, NULL); |
1f01d60e | 661 | if (ret) |
f19b2823 | 662 | goto mfd_err; |
f19b2823 MLC |
663 | |
664 | return 0; | |
665 | ||
666 | mfd_err: | |
990810b0 | 667 | devm_free_irq(&client->dev, twl6040->irq_th, twl6040); |
1ac96265 | 668 | thirq_err: |
990810b0 | 669 | devm_free_irq(&client->dev, twl6040->irq_ready, twl6040); |
1ac96265 | 670 | readyirq_err: |
ab7edb14 | 671 | regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
5af7df6b PU |
672 | gpio_err: |
673 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
5af7df6b | 674 | regulator_get_err: |
8eaeb939 | 675 | i2c_set_clientdata(client, NULL); |
ecc8fa1c | 676 | |
f19b2823 MLC |
677 | return ret; |
678 | } | |
679 | ||
612b95cd | 680 | static int twl6040_remove(struct i2c_client *client) |
f19b2823 | 681 | { |
8eaeb939 | 682 | struct twl6040 *twl6040 = i2c_get_clientdata(client); |
f19b2823 MLC |
683 | |
684 | if (twl6040->power_count) | |
685 | twl6040_power(twl6040, 0); | |
686 | ||
990810b0 JH |
687 | devm_free_irq(&client->dev, twl6040->irq_ready, twl6040); |
688 | devm_free_irq(&client->dev, twl6040->irq_th, twl6040); | |
ab7edb14 | 689 | regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
f19b2823 | 690 | |
8eaeb939 PU |
691 | mfd_remove_devices(&client->dev); |
692 | i2c_set_clientdata(client, NULL); | |
f19b2823 | 693 | |
5af7df6b | 694 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
5af7df6b | 695 | |
f19b2823 MLC |
696 | return 0; |
697 | } | |
698 | ||
8eaeb939 PU |
699 | static const struct i2c_device_id twl6040_i2c_id[] = { |
700 | { "twl6040", 0, }, | |
1fc74aef | 701 | { "twl6041", 0, }, |
8eaeb939 PU |
702 | { }, |
703 | }; | |
704 | MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id); | |
705 | ||
706 | static struct i2c_driver twl6040_driver = { | |
707 | .driver = { | |
708 | .name = "twl6040", | |
709 | .owner = THIS_MODULE, | |
710 | }, | |
f19b2823 | 711 | .probe = twl6040_probe, |
612b95cd | 712 | .remove = twl6040_remove, |
8eaeb939 | 713 | .id_table = twl6040_i2c_id, |
f19b2823 MLC |
714 | }; |
715 | ||
8eaeb939 | 716 | module_i2c_driver(twl6040_driver); |
f19b2823 MLC |
717 | |
718 | MODULE_DESCRIPTION("TWL6040 MFD"); | |
719 | MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>"); | |
720 | MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>"); | |
721 | MODULE_LICENSE("GPL"); | |
722 | MODULE_ALIAS("platform:twl6040"); |