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 | |
ca2cad6a SO |
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 | ||
f19b2823 MLC |
61 | int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) |
62 | { | |
63 | int ret; | |
8eaeb939 | 64 | unsigned int val; |
f19b2823 | 65 | |
31b402e3 PU |
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 { | |
8eaeb939 | 71 | ret = regmap_read(twl6040->regmap, reg, &val); |
c600040f | 72 | if (ret < 0) |
31b402e3 | 73 | return ret; |
f19b2823 | 74 | } |
f19b2823 MLC |
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 | ||
8eaeb939 | 84 | ret = regmap_write(twl6040->regmap, reg, val); |
31b402e3 PU |
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; | |
f19b2823 MLC |
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 | { | |
c600040f | 95 | return regmap_update_bits(twl6040->regmap, reg, mask, mask); |
f19b2823 MLC |
96 | } |
97 | EXPORT_SYMBOL(twl6040_set_bits); | |
98 | ||
99 | int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
100 | { | |
c600040f | 101 | return regmap_update_bits(twl6040->regmap, reg, mask, 0); |
f19b2823 MLC |
102 | } |
103 | EXPORT_SYMBOL(twl6040_clear_bits); | |
104 | ||
105 | /* twl6040 codec manual power-up sequence */ | |
f9be1343 | 106 | static int twl6040_power_up_manual(struct twl6040 *twl6040) |
f19b2823 MLC |
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 | ||
f9be1343 | 160 | dev_err(twl6040->dev, "manual power-up failed\n"); |
f19b2823 MLC |
161 | return ret; |
162 | } | |
163 | ||
164 | /* twl6040 manual power-down sequence */ | |
f9be1343 | 165 | static void twl6040_power_down_manual(struct twl6040 *twl6040) |
f19b2823 MLC |
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 | ||
1ac96265 | 195 | static irqreturn_t twl6040_readyint_handler(int irq, void *data) |
f19b2823 MLC |
196 | { |
197 | struct twl6040 *twl6040 = data; | |
f19b2823 | 198 | |
1ac96265 | 199 | complete(&twl6040->ready); |
f19b2823 | 200 | |
1ac96265 PU |
201 | return IRQ_HANDLED; |
202 | } | |
f19b2823 | 203 | |
1ac96265 PU |
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); | |
f19b2823 MLC |
216 | } |
217 | ||
218 | return IRQ_HANDLED; | |
219 | } | |
220 | ||
f9be1343 | 221 | static int twl6040_power_up_automatic(struct twl6040 *twl6040) |
f19b2823 MLC |
222 | { |
223 | int time_left; | |
f9be1343 PU |
224 | |
225 | gpio_set_value(twl6040->audpwron, 1); | |
f19b2823 MLC |
226 | |
227 | time_left = wait_for_completion_timeout(&twl6040->ready, | |
228 | msecs_to_jiffies(144)); | |
229 | if (!time_left) { | |
f9be1343 PU |
230 | u8 intid; |
231 | ||
232 | dev_warn(twl6040->dev, "timeout waiting for READYINT\n"); | |
f19b2823 MLC |
233 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); |
234 | if (!(intid & TWL6040_READYINT)) { | |
f9be1343 PU |
235 | dev_err(twl6040->dev, "automatic power-up failed\n"); |
236 | gpio_set_value(twl6040->audpwron, 0); | |
f19b2823 MLC |
237 | return -ETIMEDOUT; |
238 | } | |
239 | } | |
240 | ||
241 | return 0; | |
242 | } | |
243 | ||
244 | int twl6040_power(struct twl6040 *twl6040, int on) | |
245 | { | |
f19b2823 MLC |
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 | ||
f9be1343 PU |
255 | if (gpio_is_valid(twl6040->audpwron)) { |
256 | /* use automatic power-up sequence */ | |
257 | ret = twl6040_power_up_automatic(twl6040); | |
f19b2823 | 258 | if (ret) { |
f19b2823 MLC |
259 | twl6040->power_count = 0; |
260 | goto out; | |
261 | } | |
262 | } else { | |
263 | /* use manual power-up sequence */ | |
f9be1343 | 264 | ret = twl6040_power_up_manual(twl6040); |
f19b2823 | 265 | if (ret) { |
f19b2823 MLC |
266 | twl6040->power_count = 0; |
267 | goto out; | |
268 | } | |
269 | } | |
cfb7a33b PU |
270 | /* Default PLL configuration after power up */ |
271 | twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL; | |
f19b2823 | 272 | twl6040->sysclk = 19200000; |
f8447d6c | 273 | twl6040->mclk = 32768; |
f19b2823 MLC |
274 | } else { |
275 | /* already powered-down */ | |
276 | if (!twl6040->power_count) { | |
2d7c957e | 277 | dev_err(twl6040->dev, |
f19b2823 MLC |
278 | "device is already powered-off\n"); |
279 | ret = -EPERM; | |
280 | goto out; | |
281 | } | |
282 | ||
283 | if (--twl6040->power_count) | |
284 | goto out; | |
285 | ||
f9be1343 | 286 | if (gpio_is_valid(twl6040->audpwron)) { |
f19b2823 | 287 | /* use AUDPWRON line */ |
f9be1343 | 288 | gpio_set_value(twl6040->audpwron, 0); |
f19b2823 MLC |
289 | |
290 | /* power-down sequence latency */ | |
291 | usleep_range(500, 700); | |
292 | } else { | |
293 | /* use manual power-down sequence */ | |
f9be1343 | 294 | twl6040_power_down_manual(twl6040); |
f19b2823 | 295 | } |
f19b2823 | 296 | twl6040->sysclk = 0; |
f8447d6c | 297 | twl6040->mclk = 0; |
f19b2823 MLC |
298 | } |
299 | ||
300 | out: | |
301 | mutex_unlock(&twl6040->mutex); | |
302 | return ret; | |
303 | } | |
304 | EXPORT_SYMBOL(twl6040_power); | |
305 | ||
cfb7a33b | 306 | int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, |
f19b2823 MLC |
307 | unsigned int freq_in, unsigned int freq_out) |
308 | { | |
309 | u8 hppllctl, lppllctl; | |
310 | int ret = 0; | |
311 | ||
312 | mutex_lock(&twl6040->mutex); | |
313 | ||
314 | hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL); | |
315 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
316 | ||
2bd05db7 PU |
317 | /* Force full reconfiguration when switching between PLL */ |
318 | if (pll_id != twl6040->pll) { | |
319 | twl6040->sysclk = 0; | |
320 | twl6040->mclk = 0; | |
321 | } | |
322 | ||
cfb7a33b PU |
323 | switch (pll_id) { |
324 | case TWL6040_SYSCLK_SEL_LPPLL: | |
f19b2823 | 325 | /* low-power PLL divider */ |
2bd05db7 PU |
326 | /* Change the sysclk configuration only if it has been canged */ |
327 | if (twl6040->sysclk != freq_out) { | |
328 | switch (freq_out) { | |
329 | case 17640000: | |
330 | lppllctl |= TWL6040_LPLLFIN; | |
331 | break; | |
332 | case 19200000: | |
333 | lppllctl &= ~TWL6040_LPLLFIN; | |
334 | break; | |
335 | default: | |
336 | dev_err(twl6040->dev, | |
337 | "freq_out %d not supported\n", | |
338 | freq_out); | |
339 | ret = -EINVAL; | |
340 | goto pll_out; | |
341 | } | |
342 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
343 | lppllctl); | |
f19b2823 | 344 | } |
2bd05db7 PU |
345 | |
346 | /* The PLL in use has not been change, we can exit */ | |
347 | if (twl6040->pll == pll_id) | |
348 | break; | |
f19b2823 MLC |
349 | |
350 | switch (freq_in) { | |
351 | case 32768: | |
352 | lppllctl |= TWL6040_LPLLENA; | |
353 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
354 | lppllctl); | |
355 | mdelay(5); | |
356 | lppllctl &= ~TWL6040_HPLLSEL; | |
357 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
358 | lppllctl); | |
359 | hppllctl &= ~TWL6040_HPLLENA; | |
360 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, | |
361 | hppllctl); | |
362 | break; | |
363 | default: | |
2d7c957e | 364 | dev_err(twl6040->dev, |
f19b2823 MLC |
365 | "freq_in %d not supported\n", freq_in); |
366 | ret = -EINVAL; | |
367 | goto pll_out; | |
368 | } | |
f19b2823 | 369 | break; |
cfb7a33b | 370 | case TWL6040_SYSCLK_SEL_HPPLL: |
f19b2823 MLC |
371 | /* high-performance PLL can provide only 19.2 MHz */ |
372 | if (freq_out != 19200000) { | |
2d7c957e | 373 | dev_err(twl6040->dev, |
f19b2823 MLC |
374 | "freq_out %d not supported\n", freq_out); |
375 | ret = -EINVAL; | |
376 | goto pll_out; | |
377 | } | |
378 | ||
2bd05db7 PU |
379 | if (twl6040->mclk != freq_in) { |
380 | hppllctl &= ~TWL6040_MCLK_MSK; | |
381 | ||
382 | switch (freq_in) { | |
383 | case 12000000: | |
384 | /* PLL enabled, active mode */ | |
385 | hppllctl |= TWL6040_MCLK_12000KHZ | | |
386 | TWL6040_HPLLENA; | |
387 | break; | |
388 | case 19200000: | |
389 | /* | |
390 | * PLL disabled | |
391 | * (enable PLL if MCLK jitter quality | |
392 | * doesn't meet specification) | |
393 | */ | |
394 | hppllctl |= TWL6040_MCLK_19200KHZ; | |
395 | break; | |
396 | case 26000000: | |
397 | /* PLL enabled, active mode */ | |
398 | hppllctl |= TWL6040_MCLK_26000KHZ | | |
399 | TWL6040_HPLLENA; | |
400 | break; | |
401 | case 38400000: | |
402 | /* PLL enabled, active mode */ | |
403 | hppllctl |= TWL6040_MCLK_38400KHZ | | |
404 | TWL6040_HPLLENA; | |
405 | break; | |
406 | default: | |
407 | dev_err(twl6040->dev, | |
408 | "freq_in %d not supported\n", freq_in); | |
409 | ret = -EINVAL; | |
410 | goto pll_out; | |
411 | } | |
f19b2823 | 412 | |
f19b2823 | 413 | /* |
2bd05db7 PU |
414 | * enable clock slicer to ensure input waveform is |
415 | * square | |
f19b2823 | 416 | */ |
2bd05db7 | 417 | hppllctl |= TWL6040_HPLLSQRENA; |
f19b2823 | 418 | |
2bd05db7 PU |
419 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, |
420 | hppllctl); | |
421 | usleep_range(500, 700); | |
422 | lppllctl |= TWL6040_HPLLSEL; | |
423 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
424 | lppllctl); | |
425 | lppllctl &= ~TWL6040_LPLLENA; | |
426 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
427 | lppllctl); | |
428 | } | |
f19b2823 MLC |
429 | break; |
430 | default: | |
2d7c957e | 431 | dev_err(twl6040->dev, "unknown pll id %d\n", pll_id); |
f19b2823 MLC |
432 | ret = -EINVAL; |
433 | goto pll_out; | |
434 | } | |
435 | ||
436 | twl6040->sysclk = freq_out; | |
f8447d6c | 437 | twl6040->mclk = freq_in; |
cfb7a33b | 438 | twl6040->pll = pll_id; |
f19b2823 MLC |
439 | |
440 | pll_out: | |
441 | mutex_unlock(&twl6040->mutex); | |
442 | return ret; | |
443 | } | |
444 | EXPORT_SYMBOL(twl6040_set_pll); | |
445 | ||
cfb7a33b | 446 | int twl6040_get_pll(struct twl6040 *twl6040) |
f19b2823 | 447 | { |
cfb7a33b PU |
448 | if (twl6040->power_count) |
449 | return twl6040->pll; | |
450 | else | |
451 | return -ENODEV; | |
f19b2823 MLC |
452 | } |
453 | EXPORT_SYMBOL(twl6040_get_pll); | |
454 | ||
455 | unsigned int twl6040_get_sysclk(struct twl6040 *twl6040) | |
456 | { | |
457 | return twl6040->sysclk; | |
458 | } | |
459 | EXPORT_SYMBOL(twl6040_get_sysclk); | |
460 | ||
70601ec1 PU |
461 | /* Get the combined status of the vibra control register */ |
462 | int twl6040_get_vibralr_status(struct twl6040 *twl6040) | |
463 | { | |
464 | u8 status; | |
465 | ||
466 | status = twl6040->vibra_ctrl_cache[0] | twl6040->vibra_ctrl_cache[1]; | |
467 | status &= (TWL6040_VIBENA | TWL6040_VIBSEL); | |
468 | ||
469 | return status; | |
470 | } | |
471 | EXPORT_SYMBOL(twl6040_get_vibralr_status); | |
472 | ||
0f962ae2 PU |
473 | static struct resource twl6040_vibra_rsrc[] = { |
474 | { | |
475 | .flags = IORESOURCE_IRQ, | |
476 | }, | |
477 | }; | |
478 | ||
479 | static struct resource twl6040_codec_rsrc[] = { | |
480 | { | |
481 | .flags = IORESOURCE_IRQ, | |
482 | }, | |
483 | }; | |
484 | ||
8eaeb939 | 485 | static bool twl6040_readable_reg(struct device *dev, unsigned int reg) |
f19b2823 | 486 | { |
8eaeb939 PU |
487 | /* Register 0 is not readable */ |
488 | if (!reg) | |
489 | return false; | |
490 | return true; | |
491 | } | |
492 | ||
493 | static struct regmap_config twl6040_regmap_config = { | |
494 | .reg_bits = 8, | |
495 | .val_bits = 8, | |
496 | .max_register = TWL6040_REG_STATUS, /* 0x2e */ | |
497 | ||
498 | .readable_reg = twl6040_readable_reg, | |
499 | }; | |
500 | ||
ab7edb14 PU |
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 | ||
612b95cd GKH |
520 | static int twl6040_probe(struct i2c_client *client, |
521 | const struct i2c_device_id *id) | |
8eaeb939 PU |
522 | { |
523 | struct twl6040_platform_data *pdata = client->dev.platform_data; | |
37e13cec | 524 | struct device_node *node = client->dev.of_node; |
f19b2823 MLC |
525 | struct twl6040 *twl6040; |
526 | struct mfd_cell *cell = NULL; | |
1f01d60e | 527 | int irq, ret, children = 0; |
f19b2823 | 528 | |
37e13cec | 529 | if (!pdata && !node) { |
8eaeb939 | 530 | dev_err(&client->dev, "Platform data is missing\n"); |
f19b2823 MLC |
531 | return -EINVAL; |
532 | } | |
533 | ||
d20e1d21 | 534 | /* In order to operate correctly we need valid interrupt config */ |
6712419d | 535 | if (!client->irq) { |
8eaeb939 | 536 | dev_err(&client->dev, "Invalid IRQ configuration\n"); |
d20e1d21 PU |
537 | return -EINVAL; |
538 | } | |
539 | ||
8eaeb939 PU |
540 | twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), |
541 | GFP_KERNEL); | |
542 | if (!twl6040) { | |
543 | ret = -ENOMEM; | |
544 | goto err; | |
545 | } | |
546 | ||
bbf6adc1 | 547 | twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config); |
8eaeb939 PU |
548 | if (IS_ERR(twl6040->regmap)) { |
549 | ret = PTR_ERR(twl6040->regmap); | |
550 | goto err; | |
551 | } | |
f19b2823 | 552 | |
8eaeb939 | 553 | i2c_set_clientdata(client, twl6040); |
f19b2823 | 554 | |
5af7df6b PU |
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 | ||
8eaeb939 PU |
570 | twl6040->dev = &client->dev; |
571 | twl6040->irq = client->irq; | |
f19b2823 MLC |
572 | |
573 | mutex_init(&twl6040->mutex); | |
f19b2823 MLC |
574 | init_completion(&twl6040->ready); |
575 | ||
576 | twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); | |
577 | ||
77f63e06 | 578 | /* ERRATA: Automatic power-up is not possible in ES1.0 */ |
37e13cec PU |
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 | |
77f63e06 PU |
586 | twl6040->audpwron = -EINVAL; |
587 | ||
f19b2823 | 588 | if (gpio_is_valid(twl6040->audpwron)) { |
b04edb93 AL |
589 | ret = gpio_request_one(twl6040->audpwron, GPIOF_OUT_INIT_LOW, |
590 | "audpwron"); | |
f19b2823 | 591 | if (ret) |
5af7df6b | 592 | goto gpio_err; |
f19b2823 MLC |
593 | } |
594 | ||
ab7edb14 PU |
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) | |
5af7df6b | 599 | goto irq_init_err; |
d20e1d21 | 600 | |
ab7edb14 PU |
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, | |
1b7c4725 | 608 | "twl6040_irq_ready", twl6040); |
d20e1d21 | 609 | if (ret) { |
1ac96265 PU |
610 | dev_err(twl6040->dev, "READY IRQ request failed: %d\n", ret); |
611 | goto readyirq_err; | |
612 | } | |
613 | ||
ab7edb14 PU |
614 | ret = request_threaded_irq(twl6040->irq_th, NULL, |
615 | twl6040_thint_handler, IRQF_ONESHOT, | |
1ac96265 PU |
616 | "twl6040_irq_th", twl6040); |
617 | if (ret) { | |
618 | dev_err(twl6040->dev, "Thermal IRQ request failed: %d\n", ret); | |
619 | goto thirq_err; | |
f19b2823 MLC |
620 | } |
621 | ||
622 | /* dual-access registers controlled by I2C only */ | |
623 | twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL); | |
624 | ||
1f01d60e PU |
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 | */ | |
ab7edb14 | 631 | irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_PLUG); |
1f01d60e PU |
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); | |
37e13cec | 638 | if (pdata && pdata->codec) { |
6c448637 PU |
639 | cell->platform_data = pdata->codec; |
640 | cell->pdata_size = sizeof(*pdata->codec); | |
f19b2823 | 641 | } |
1f01d60e | 642 | children++; |
f19b2823 | 643 | |
ca2cad6a | 644 | if (twl6040_has_vibra(pdata, node)) { |
ab7edb14 | 645 | irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_VIB); |
0f962ae2 | 646 | |
f19b2823 MLC |
647 | cell = &twl6040->cells[children]; |
648 | cell->name = "twl6040-vibra"; | |
0f962ae2 PU |
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 | ||
37e13cec PU |
654 | if (pdata && pdata->vibra) { |
655 | cell->platform_data = pdata->vibra; | |
656 | cell->pdata_size = sizeof(*pdata->vibra); | |
657 | } | |
f19b2823 MLC |
658 | children++; |
659 | } | |
660 | ||
5cbe786a PU |
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 | ||
1f01d60e | 676 | ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children, |
55692af5 | 677 | NULL, 0, NULL); |
1f01d60e | 678 | if (ret) |
f19b2823 | 679 | goto mfd_err; |
f19b2823 MLC |
680 | |
681 | return 0; | |
682 | ||
683 | mfd_err: | |
ab7edb14 | 684 | free_irq(twl6040->irq_th, twl6040); |
1ac96265 | 685 | thirq_err: |
ab7edb14 | 686 | free_irq(twl6040->irq_ready, twl6040); |
1ac96265 | 687 | readyirq_err: |
ab7edb14 | 688 | regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
5af7df6b | 689 | irq_init_err: |
f19b2823 MLC |
690 | if (gpio_is_valid(twl6040->audpwron)) |
691 | gpio_free(twl6040->audpwron); | |
5af7df6b PU |
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: | |
8eaeb939 | 697 | i2c_set_clientdata(client, NULL); |
8eaeb939 | 698 | err: |
f19b2823 MLC |
699 | return ret; |
700 | } | |
701 | ||
612b95cd | 702 | static int twl6040_remove(struct i2c_client *client) |
f19b2823 | 703 | { |
8eaeb939 | 704 | struct twl6040 *twl6040 = i2c_get_clientdata(client); |
f19b2823 MLC |
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 | ||
ab7edb14 PU |
712 | free_irq(twl6040->irq_ready, twl6040); |
713 | free_irq(twl6040->irq_th, twl6040); | |
714 | regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); | |
f19b2823 | 715 | |
8eaeb939 PU |
716 | mfd_remove_devices(&client->dev); |
717 | i2c_set_clientdata(client, NULL); | |
f19b2823 | 718 | |
5af7df6b PU |
719 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
720 | regulator_bulk_free(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
721 | ||
f19b2823 MLC |
722 | return 0; |
723 | } | |
724 | ||
8eaeb939 PU |
725 | static const struct i2c_device_id twl6040_i2c_id[] = { |
726 | { "twl6040", 0, }, | |
1fc74aef | 727 | { "twl6041", 0, }, |
8eaeb939 PU |
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 | }, | |
f19b2823 | 737 | .probe = twl6040_probe, |
612b95cd | 738 | .remove = twl6040_remove, |
8eaeb939 | 739 | .id_table = twl6040_i2c_id, |
f19b2823 MLC |
740 | }; |
741 | ||
8eaeb939 | 742 | module_i2c_driver(twl6040_driver); |
f19b2823 MLC |
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"); |