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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> | |
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 | |
c7f9129d PU |
47 | static struct reg_default twl6040_defaults[] = { |
48 | { 0x01, 0x4B }, /* REG_ASICID (ro) */ | |
49 | { 0x02, 0x00 }, /* REG_ASICREV (ro) */ | |
50 | { 0x03, 0x00 }, /* REG_INTID */ | |
51 | { 0x04, 0x00 }, /* REG_INTMR */ | |
52 | { 0x05, 0x00 }, /* REG_NCPCTRL */ | |
53 | { 0x06, 0x00 }, /* REG_LDOCTL */ | |
54 | { 0x07, 0x60 }, /* REG_HPPLLCTL */ | |
55 | { 0x08, 0x00 }, /* REG_LPPLLCTL */ | |
56 | { 0x09, 0x4A }, /* REG_LPPLLDIV */ | |
57 | { 0x0A, 0x00 }, /* REG_AMICBCTL */ | |
58 | { 0x0B, 0x00 }, /* REG_DMICBCTL */ | |
59 | { 0x0C, 0x00 }, /* REG_MICLCTL */ | |
60 | { 0x0D, 0x00 }, /* REG_MICRCTL */ | |
61 | { 0x0E, 0x00 }, /* REG_MICGAIN */ | |
62 | { 0x0F, 0x1B }, /* REG_LINEGAIN */ | |
63 | { 0x10, 0x00 }, /* REG_HSLCTL */ | |
64 | { 0x11, 0x00 }, /* REG_HSRCTL */ | |
65 | { 0x12, 0x00 }, /* REG_HSGAIN */ | |
66 | { 0x13, 0x00 }, /* REG_EARCTL */ | |
67 | { 0x14, 0x00 }, /* REG_HFLCTL */ | |
68 | { 0x15, 0x00 }, /* REG_HFLGAIN */ | |
69 | { 0x16, 0x00 }, /* REG_HFRCTL */ | |
70 | { 0x17, 0x00 }, /* REG_HFRGAIN */ | |
71 | { 0x18, 0x00 }, /* REG_VIBCTLL */ | |
72 | { 0x19, 0x00 }, /* REG_VIBDATL */ | |
73 | { 0x1A, 0x00 }, /* REG_VIBCTLR */ | |
74 | { 0x1B, 0x00 }, /* REG_VIBDATR */ | |
75 | { 0x1C, 0x00 }, /* REG_HKCTL1 */ | |
76 | { 0x1D, 0x00 }, /* REG_HKCTL2 */ | |
77 | { 0x1E, 0x00 }, /* REG_GPOCTL */ | |
78 | { 0x1F, 0x00 }, /* REG_ALB */ | |
79 | { 0x20, 0x00 }, /* REG_DLB */ | |
80 | /* 0x28, REG_TRIM1 */ | |
81 | /* 0x29, REG_TRIM2 */ | |
82 | /* 0x2A, REG_TRIM3 */ | |
83 | /* 0x2B, REG_HSOTRIM */ | |
84 | /* 0x2C, REG_HFOTRIM */ | |
85 | { 0x2D, 0x08 }, /* REG_ACCCTL */ | |
86 | { 0x2E, 0x00 }, /* REG_STATUS (ro) */ | |
87 | }; | |
88 | ||
adc01fbd | 89 | static struct reg_default twl6040_patch[] = { |
c7f9129d PU |
90 | /* Select I2C bus access to dual access registers */ |
91 | { TWL6040_REG_ACCCTL, 0x09 }, | |
92 | }; | |
93 | ||
94 | ||
df04b624 | 95 | static bool twl6040_has_vibra(struct device_node *node) |
ca2cad6a | 96 | { |
ca2cad6a SO |
97 | #ifdef CONFIG_OF |
98 | if (of_find_node_by_name(node, "vibra")) | |
99 | return true; | |
100 | #endif | |
ca2cad6a SO |
101 | return false; |
102 | } | |
103 | ||
f19b2823 MLC |
104 | int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) |
105 | { | |
106 | int ret; | |
8eaeb939 | 107 | unsigned int val; |
f19b2823 | 108 | |
c6f39257 MB |
109 | ret = regmap_read(twl6040->regmap, reg, &val); |
110 | if (ret < 0) | |
111 | return ret; | |
f19b2823 MLC |
112 | |
113 | return val; | |
114 | } | |
115 | EXPORT_SYMBOL(twl6040_reg_read); | |
116 | ||
117 | int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) | |
118 | { | |
119 | int ret; | |
120 | ||
8eaeb939 | 121 | ret = regmap_write(twl6040->regmap, reg, val); |
f19b2823 MLC |
122 | |
123 | return ret; | |
124 | } | |
125 | EXPORT_SYMBOL(twl6040_reg_write); | |
126 | ||
127 | int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
128 | { | |
c600040f | 129 | return regmap_update_bits(twl6040->regmap, reg, mask, mask); |
f19b2823 MLC |
130 | } |
131 | EXPORT_SYMBOL(twl6040_set_bits); | |
132 | ||
133 | int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) | |
134 | { | |
c600040f | 135 | return regmap_update_bits(twl6040->regmap, reg, mask, 0); |
f19b2823 MLC |
136 | } |
137 | EXPORT_SYMBOL(twl6040_clear_bits); | |
138 | ||
139 | /* twl6040 codec manual power-up sequence */ | |
f9be1343 | 140 | static int twl6040_power_up_manual(struct twl6040 *twl6040) |
f19b2823 MLC |
141 | { |
142 | u8 ldoctl, ncpctl, lppllctl; | |
143 | int ret; | |
144 | ||
145 | /* enable high-side LDO, reference system and internal oscillator */ | |
146 | ldoctl = TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA; | |
147 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
148 | if (ret) | |
149 | return ret; | |
150 | usleep_range(10000, 10500); | |
151 | ||
152 | /* enable negative charge pump */ | |
153 | ncpctl = TWL6040_NCPENA; | |
154 | ret = twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
155 | if (ret) | |
156 | goto ncp_err; | |
157 | usleep_range(1000, 1500); | |
158 | ||
159 | /* enable low-side LDO */ | |
160 | ldoctl |= TWL6040_LSLDOENA; | |
161 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
162 | if (ret) | |
163 | goto lsldo_err; | |
164 | usleep_range(1000, 1500); | |
165 | ||
166 | /* enable low-power PLL */ | |
167 | lppllctl = TWL6040_LPLLENA; | |
168 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
169 | if (ret) | |
170 | goto lppll_err; | |
171 | usleep_range(5000, 5500); | |
172 | ||
173 | /* disable internal oscillator */ | |
174 | ldoctl &= ~TWL6040_OSCENA; | |
175 | ret = twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
176 | if (ret) | |
177 | goto osc_err; | |
178 | ||
179 | return 0; | |
180 | ||
181 | osc_err: | |
182 | lppllctl &= ~TWL6040_LPLLENA; | |
183 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
184 | lppll_err: | |
185 | ldoctl &= ~TWL6040_LSLDOENA; | |
186 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
187 | lsldo_err: | |
188 | ncpctl &= ~TWL6040_NCPENA; | |
189 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
190 | ncp_err: | |
191 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
192 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
193 | ||
f9be1343 | 194 | dev_err(twl6040->dev, "manual power-up failed\n"); |
f19b2823 MLC |
195 | return ret; |
196 | } | |
197 | ||
198 | /* twl6040 manual power-down sequence */ | |
f9be1343 | 199 | static void twl6040_power_down_manual(struct twl6040 *twl6040) |
f19b2823 MLC |
200 | { |
201 | u8 ncpctl, ldoctl, lppllctl; | |
202 | ||
203 | ncpctl = twl6040_reg_read(twl6040, TWL6040_REG_NCPCTL); | |
204 | ldoctl = twl6040_reg_read(twl6040, TWL6040_REG_LDOCTL); | |
205 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
206 | ||
207 | /* enable internal oscillator */ | |
208 | ldoctl |= TWL6040_OSCENA; | |
209 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
210 | usleep_range(1000, 1500); | |
211 | ||
212 | /* disable low-power PLL */ | |
213 | lppllctl &= ~TWL6040_LPLLENA; | |
214 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, lppllctl); | |
215 | ||
216 | /* disable low-side LDO */ | |
217 | ldoctl &= ~TWL6040_LSLDOENA; | |
218 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
219 | ||
220 | /* disable negative charge pump */ | |
221 | ncpctl &= ~TWL6040_NCPENA; | |
222 | twl6040_reg_write(twl6040, TWL6040_REG_NCPCTL, ncpctl); | |
223 | ||
224 | /* disable high-side LDO, reference system and internal oscillator */ | |
225 | ldoctl &= ~(TWL6040_HSLDOENA | TWL6040_REFENA | TWL6040_OSCENA); | |
226 | twl6040_reg_write(twl6040, TWL6040_REG_LDOCTL, ldoctl); | |
227 | } | |
228 | ||
1ac96265 | 229 | static irqreturn_t twl6040_readyint_handler(int irq, void *data) |
f19b2823 MLC |
230 | { |
231 | struct twl6040 *twl6040 = data; | |
f19b2823 | 232 | |
1ac96265 | 233 | complete(&twl6040->ready); |
f19b2823 | 234 | |
1ac96265 PU |
235 | return IRQ_HANDLED; |
236 | } | |
f19b2823 | 237 | |
1ac96265 PU |
238 | static irqreturn_t twl6040_thint_handler(int irq, void *data) |
239 | { | |
240 | struct twl6040 *twl6040 = data; | |
241 | u8 status; | |
242 | ||
243 | status = twl6040_reg_read(twl6040, TWL6040_REG_STATUS); | |
244 | if (status & TWL6040_TSHUTDET) { | |
245 | dev_warn(twl6040->dev, "Thermal shutdown, powering-off"); | |
246 | twl6040_power(twl6040, 0); | |
247 | } else { | |
248 | dev_warn(twl6040->dev, "Leaving thermal shutdown, powering-on"); | |
249 | twl6040_power(twl6040, 1); | |
f19b2823 MLC |
250 | } |
251 | ||
252 | return IRQ_HANDLED; | |
253 | } | |
254 | ||
f9be1343 | 255 | static int twl6040_power_up_automatic(struct twl6040 *twl6040) |
f19b2823 MLC |
256 | { |
257 | int time_left; | |
f9be1343 PU |
258 | |
259 | gpio_set_value(twl6040->audpwron, 1); | |
f19b2823 MLC |
260 | |
261 | time_left = wait_for_completion_timeout(&twl6040->ready, | |
262 | msecs_to_jiffies(144)); | |
263 | if (!time_left) { | |
f9be1343 PU |
264 | u8 intid; |
265 | ||
266 | dev_warn(twl6040->dev, "timeout waiting for READYINT\n"); | |
f19b2823 MLC |
267 | intid = twl6040_reg_read(twl6040, TWL6040_REG_INTID); |
268 | if (!(intid & TWL6040_READYINT)) { | |
f9be1343 PU |
269 | dev_err(twl6040->dev, "automatic power-up failed\n"); |
270 | gpio_set_value(twl6040->audpwron, 0); | |
f19b2823 MLC |
271 | return -ETIMEDOUT; |
272 | } | |
273 | } | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
278 | int twl6040_power(struct twl6040 *twl6040, int on) | |
279 | { | |
f19b2823 MLC |
280 | int ret = 0; |
281 | ||
282 | mutex_lock(&twl6040->mutex); | |
283 | ||
284 | if (on) { | |
285 | /* already powered-up */ | |
286 | if (twl6040->power_count++) | |
287 | goto out; | |
288 | ||
c7f9129d PU |
289 | /* Allow writes to the chip */ |
290 | regcache_cache_only(twl6040->regmap, false); | |
291 | ||
f9be1343 PU |
292 | if (gpio_is_valid(twl6040->audpwron)) { |
293 | /* use automatic power-up sequence */ | |
294 | ret = twl6040_power_up_automatic(twl6040); | |
f19b2823 | 295 | if (ret) { |
f19b2823 MLC |
296 | twl6040->power_count = 0; |
297 | goto out; | |
298 | } | |
299 | } else { | |
300 | /* use manual power-up sequence */ | |
f9be1343 | 301 | ret = twl6040_power_up_manual(twl6040); |
f19b2823 | 302 | if (ret) { |
f19b2823 MLC |
303 | twl6040->power_count = 0; |
304 | goto out; | |
305 | } | |
306 | } | |
c7f9129d PU |
307 | |
308 | /* Sync with the HW */ | |
309 | regcache_sync(twl6040->regmap); | |
310 | ||
cfb7a33b PU |
311 | /* Default PLL configuration after power up */ |
312 | twl6040->pll = TWL6040_SYSCLK_SEL_LPPLL; | |
f19b2823 | 313 | twl6040->sysclk = 19200000; |
f8447d6c | 314 | twl6040->mclk = 32768; |
f19b2823 MLC |
315 | } else { |
316 | /* already powered-down */ | |
317 | if (!twl6040->power_count) { | |
2d7c957e | 318 | dev_err(twl6040->dev, |
f19b2823 MLC |
319 | "device is already powered-off\n"); |
320 | ret = -EPERM; | |
321 | goto out; | |
322 | } | |
323 | ||
324 | if (--twl6040->power_count) | |
325 | goto out; | |
326 | ||
f9be1343 | 327 | if (gpio_is_valid(twl6040->audpwron)) { |
f19b2823 | 328 | /* use AUDPWRON line */ |
f9be1343 | 329 | gpio_set_value(twl6040->audpwron, 0); |
f19b2823 MLC |
330 | |
331 | /* power-down sequence latency */ | |
332 | usleep_range(500, 700); | |
333 | } else { | |
334 | /* use manual power-down sequence */ | |
f9be1343 | 335 | twl6040_power_down_manual(twl6040); |
f19b2823 | 336 | } |
c7f9129d PU |
337 | |
338 | /* Set regmap to cache only and mark it as dirty */ | |
339 | regcache_cache_only(twl6040->regmap, true); | |
340 | regcache_mark_dirty(twl6040->regmap); | |
341 | ||
f19b2823 | 342 | twl6040->sysclk = 0; |
f8447d6c | 343 | twl6040->mclk = 0; |
f19b2823 MLC |
344 | } |
345 | ||
346 | out: | |
347 | mutex_unlock(&twl6040->mutex); | |
348 | return ret; | |
349 | } | |
350 | EXPORT_SYMBOL(twl6040_power); | |
351 | ||
cfb7a33b | 352 | int twl6040_set_pll(struct twl6040 *twl6040, int pll_id, |
f19b2823 MLC |
353 | unsigned int freq_in, unsigned int freq_out) |
354 | { | |
355 | u8 hppllctl, lppllctl; | |
356 | int ret = 0; | |
357 | ||
358 | mutex_lock(&twl6040->mutex); | |
359 | ||
360 | hppllctl = twl6040_reg_read(twl6040, TWL6040_REG_HPPLLCTL); | |
361 | lppllctl = twl6040_reg_read(twl6040, TWL6040_REG_LPPLLCTL); | |
362 | ||
2bd05db7 PU |
363 | /* Force full reconfiguration when switching between PLL */ |
364 | if (pll_id != twl6040->pll) { | |
365 | twl6040->sysclk = 0; | |
366 | twl6040->mclk = 0; | |
367 | } | |
368 | ||
cfb7a33b PU |
369 | switch (pll_id) { |
370 | case TWL6040_SYSCLK_SEL_LPPLL: | |
f19b2823 | 371 | /* low-power PLL divider */ |
2bd05db7 PU |
372 | /* Change the sysclk configuration only if it has been canged */ |
373 | if (twl6040->sysclk != freq_out) { | |
374 | switch (freq_out) { | |
375 | case 17640000: | |
376 | lppllctl |= TWL6040_LPLLFIN; | |
377 | break; | |
378 | case 19200000: | |
379 | lppllctl &= ~TWL6040_LPLLFIN; | |
380 | break; | |
381 | default: | |
382 | dev_err(twl6040->dev, | |
383 | "freq_out %d not supported\n", | |
384 | freq_out); | |
385 | ret = -EINVAL; | |
386 | goto pll_out; | |
387 | } | |
388 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
389 | lppllctl); | |
f19b2823 | 390 | } |
2bd05db7 PU |
391 | |
392 | /* The PLL in use has not been change, we can exit */ | |
393 | if (twl6040->pll == pll_id) | |
394 | break; | |
f19b2823 MLC |
395 | |
396 | switch (freq_in) { | |
397 | case 32768: | |
398 | lppllctl |= TWL6040_LPLLENA; | |
399 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
400 | lppllctl); | |
401 | mdelay(5); | |
402 | lppllctl &= ~TWL6040_HPLLSEL; | |
403 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
404 | lppllctl); | |
405 | hppllctl &= ~TWL6040_HPLLENA; | |
406 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, | |
407 | hppllctl); | |
408 | break; | |
409 | default: | |
2d7c957e | 410 | dev_err(twl6040->dev, |
f19b2823 MLC |
411 | "freq_in %d not supported\n", freq_in); |
412 | ret = -EINVAL; | |
413 | goto pll_out; | |
414 | } | |
f19b2823 | 415 | break; |
cfb7a33b | 416 | case TWL6040_SYSCLK_SEL_HPPLL: |
f19b2823 MLC |
417 | /* high-performance PLL can provide only 19.2 MHz */ |
418 | if (freq_out != 19200000) { | |
2d7c957e | 419 | dev_err(twl6040->dev, |
f19b2823 MLC |
420 | "freq_out %d not supported\n", freq_out); |
421 | ret = -EINVAL; | |
422 | goto pll_out; | |
423 | } | |
424 | ||
2bd05db7 PU |
425 | if (twl6040->mclk != freq_in) { |
426 | hppllctl &= ~TWL6040_MCLK_MSK; | |
427 | ||
428 | switch (freq_in) { | |
429 | case 12000000: | |
430 | /* PLL enabled, active mode */ | |
431 | hppllctl |= TWL6040_MCLK_12000KHZ | | |
432 | TWL6040_HPLLENA; | |
433 | break; | |
434 | case 19200000: | |
435 | /* | |
436 | * PLL disabled | |
437 | * (enable PLL if MCLK jitter quality | |
438 | * doesn't meet specification) | |
439 | */ | |
440 | hppllctl |= TWL6040_MCLK_19200KHZ; | |
441 | break; | |
442 | case 26000000: | |
443 | /* PLL enabled, active mode */ | |
444 | hppllctl |= TWL6040_MCLK_26000KHZ | | |
445 | TWL6040_HPLLENA; | |
446 | break; | |
447 | case 38400000: | |
448 | /* PLL enabled, active mode */ | |
449 | hppllctl |= TWL6040_MCLK_38400KHZ | | |
450 | TWL6040_HPLLENA; | |
451 | break; | |
452 | default: | |
453 | dev_err(twl6040->dev, | |
454 | "freq_in %d not supported\n", freq_in); | |
455 | ret = -EINVAL; | |
456 | goto pll_out; | |
457 | } | |
f19b2823 | 458 | |
f19b2823 | 459 | /* |
2bd05db7 PU |
460 | * enable clock slicer to ensure input waveform is |
461 | * square | |
f19b2823 | 462 | */ |
2bd05db7 | 463 | hppllctl |= TWL6040_HPLLSQRENA; |
f19b2823 | 464 | |
2bd05db7 PU |
465 | twl6040_reg_write(twl6040, TWL6040_REG_HPPLLCTL, |
466 | hppllctl); | |
467 | usleep_range(500, 700); | |
468 | lppllctl |= TWL6040_HPLLSEL; | |
469 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
470 | lppllctl); | |
471 | lppllctl &= ~TWL6040_LPLLENA; | |
472 | twl6040_reg_write(twl6040, TWL6040_REG_LPPLLCTL, | |
473 | lppllctl); | |
474 | } | |
f19b2823 MLC |
475 | break; |
476 | default: | |
2d7c957e | 477 | dev_err(twl6040->dev, "unknown pll id %d\n", pll_id); |
f19b2823 MLC |
478 | ret = -EINVAL; |
479 | goto pll_out; | |
480 | } | |
481 | ||
482 | twl6040->sysclk = freq_out; | |
f8447d6c | 483 | twl6040->mclk = freq_in; |
cfb7a33b | 484 | twl6040->pll = pll_id; |
f19b2823 MLC |
485 | |
486 | pll_out: | |
487 | mutex_unlock(&twl6040->mutex); | |
488 | return ret; | |
489 | } | |
490 | EXPORT_SYMBOL(twl6040_set_pll); | |
491 | ||
cfb7a33b | 492 | int twl6040_get_pll(struct twl6040 *twl6040) |
f19b2823 | 493 | { |
cfb7a33b PU |
494 | if (twl6040->power_count) |
495 | return twl6040->pll; | |
496 | else | |
497 | return -ENODEV; | |
f19b2823 MLC |
498 | } |
499 | EXPORT_SYMBOL(twl6040_get_pll); | |
500 | ||
501 | unsigned int twl6040_get_sysclk(struct twl6040 *twl6040) | |
502 | { | |
503 | return twl6040->sysclk; | |
504 | } | |
505 | EXPORT_SYMBOL(twl6040_get_sysclk); | |
506 | ||
70601ec1 PU |
507 | /* Get the combined status of the vibra control register */ |
508 | int twl6040_get_vibralr_status(struct twl6040 *twl6040) | |
509 | { | |
c6f39257 MB |
510 | unsigned int reg; |
511 | int ret; | |
70601ec1 PU |
512 | u8 status; |
513 | ||
c6f39257 MB |
514 | ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLL, ®); |
515 | if (ret != 0) | |
516 | return ret; | |
517 | status = reg; | |
518 | ||
519 | ret = regmap_read(twl6040->regmap, TWL6040_REG_VIBCTLR, ®); | |
520 | if (ret != 0) | |
521 | return ret; | |
522 | status |= reg; | |
523 | ||
70601ec1 PU |
524 | status &= (TWL6040_VIBENA | TWL6040_VIBSEL); |
525 | ||
526 | return status; | |
527 | } | |
528 | EXPORT_SYMBOL(twl6040_get_vibralr_status); | |
529 | ||
0f962ae2 PU |
530 | static struct resource twl6040_vibra_rsrc[] = { |
531 | { | |
532 | .flags = IORESOURCE_IRQ, | |
533 | }, | |
534 | }; | |
535 | ||
536 | static struct resource twl6040_codec_rsrc[] = { | |
537 | { | |
538 | .flags = IORESOURCE_IRQ, | |
539 | }, | |
540 | }; | |
541 | ||
8eaeb939 | 542 | static bool twl6040_readable_reg(struct device *dev, unsigned int reg) |
f19b2823 | 543 | { |
8eaeb939 PU |
544 | /* Register 0 is not readable */ |
545 | if (!reg) | |
546 | return false; | |
547 | return true; | |
548 | } | |
549 | ||
c6f39257 MB |
550 | static bool twl6040_volatile_reg(struct device *dev, unsigned int reg) |
551 | { | |
552 | switch (reg) { | |
c7f9129d PU |
553 | case TWL6040_REG_ASICID: |
554 | case TWL6040_REG_ASICREV: | |
555 | case TWL6040_REG_INTID: | |
556 | case TWL6040_REG_LPPLLCTL: | |
557 | case TWL6040_REG_HPPLLCTL: | |
558 | case TWL6040_REG_STATUS: | |
559 | return true; | |
560 | default: | |
561 | return false; | |
562 | } | |
563 | } | |
564 | ||
565 | static bool twl6040_writeable_reg(struct device *dev, unsigned int reg) | |
566 | { | |
567 | switch (reg) { | |
568 | case TWL6040_REG_ASICID: | |
569 | case TWL6040_REG_ASICREV: | |
570 | case TWL6040_REG_STATUS: | |
c6f39257 MB |
571 | return false; |
572 | default: | |
573 | return true; | |
574 | } | |
575 | } | |
576 | ||
8eaeb939 PU |
577 | static struct regmap_config twl6040_regmap_config = { |
578 | .reg_bits = 8, | |
579 | .val_bits = 8, | |
c7f9129d PU |
580 | |
581 | .reg_defaults = twl6040_defaults, | |
582 | .num_reg_defaults = ARRAY_SIZE(twl6040_defaults), | |
583 | ||
8eaeb939 PU |
584 | .max_register = TWL6040_REG_STATUS, /* 0x2e */ |
585 | ||
586 | .readable_reg = twl6040_readable_reg, | |
c6f39257 | 587 | .volatile_reg = twl6040_volatile_reg, |
c7f9129d | 588 | .writeable_reg = twl6040_writeable_reg, |
c6f39257 MB |
589 | |
590 | .cache_type = REGCACHE_RBTREE, | |
8eaeb939 PU |
591 | }; |
592 | ||
ab7edb14 PU |
593 | static const struct regmap_irq twl6040_irqs[] = { |
594 | { .reg_offset = 0, .mask = TWL6040_THINT, }, | |
595 | { .reg_offset = 0, .mask = TWL6040_PLUGINT | TWL6040_UNPLUGINT, }, | |
596 | { .reg_offset = 0, .mask = TWL6040_HOOKINT, }, | |
597 | { .reg_offset = 0, .mask = TWL6040_HFINT, }, | |
598 | { .reg_offset = 0, .mask = TWL6040_VIBINT, }, | |
599 | { .reg_offset = 0, .mask = TWL6040_READYINT, }, | |
600 | }; | |
601 | ||
602 | static struct regmap_irq_chip twl6040_irq_chip = { | |
603 | .name = "twl6040", | |
604 | .irqs = twl6040_irqs, | |
605 | .num_irqs = ARRAY_SIZE(twl6040_irqs), | |
606 | ||
607 | .num_regs = 1, | |
608 | .status_base = TWL6040_REG_INTID, | |
609 | .mask_base = TWL6040_REG_INTMR, | |
610 | }; | |
611 | ||
612b95cd GKH |
612 | static int twl6040_probe(struct i2c_client *client, |
613 | const struct i2c_device_id *id) | |
8eaeb939 | 614 | { |
37e13cec | 615 | struct device_node *node = client->dev.of_node; |
f19b2823 MLC |
616 | struct twl6040 *twl6040; |
617 | struct mfd_cell *cell = NULL; | |
1f01d60e | 618 | int irq, ret, children = 0; |
f19b2823 | 619 | |
df04b624 PU |
620 | if (!node) { |
621 | dev_err(&client->dev, "of node is missing\n"); | |
f19b2823 MLC |
622 | return -EINVAL; |
623 | } | |
624 | ||
d20e1d21 | 625 | /* In order to operate correctly we need valid interrupt config */ |
6712419d | 626 | if (!client->irq) { |
8eaeb939 | 627 | dev_err(&client->dev, "Invalid IRQ configuration\n"); |
d20e1d21 PU |
628 | return -EINVAL; |
629 | } | |
630 | ||
8eaeb939 PU |
631 | twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), |
632 | GFP_KERNEL); | |
ecc8fa1c PU |
633 | if (!twl6040) |
634 | return -ENOMEM; | |
8eaeb939 | 635 | |
bbf6adc1 | 636 | twl6040->regmap = devm_regmap_init_i2c(client, &twl6040_regmap_config); |
ecc8fa1c PU |
637 | if (IS_ERR(twl6040->regmap)) |
638 | return PTR_ERR(twl6040->regmap); | |
f19b2823 | 639 | |
8eaeb939 | 640 | i2c_set_clientdata(client, twl6040); |
f19b2823 | 641 | |
5af7df6b PU |
642 | twl6040->supplies[0].supply = "vio"; |
643 | twl6040->supplies[1].supply = "v2v1"; | |
990810b0 | 644 | ret = devm_regulator_bulk_get(&client->dev, TWL6040_NUM_SUPPLIES, |
37aefe9f | 645 | twl6040->supplies); |
5af7df6b PU |
646 | if (ret != 0) { |
647 | dev_err(&client->dev, "Failed to get supplies: %d\n", ret); | |
501d609a | 648 | return ret; |
5af7df6b PU |
649 | } |
650 | ||
651 | ret = regulator_bulk_enable(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
652 | if (ret != 0) { | |
653 | dev_err(&client->dev, "Failed to enable supplies: %d\n", ret); | |
501d609a | 654 | return ret; |
5af7df6b PU |
655 | } |
656 | ||
8eaeb939 PU |
657 | twl6040->dev = &client->dev; |
658 | twl6040->irq = client->irq; | |
f19b2823 MLC |
659 | |
660 | mutex_init(&twl6040->mutex); | |
f19b2823 MLC |
661 | init_completion(&twl6040->ready); |
662 | ||
663 | twl6040->rev = twl6040_reg_read(twl6040, TWL6040_REG_ASICREV); | |
664 | ||
77f63e06 | 665 | /* ERRATA: Automatic power-up is not possible in ES1.0 */ |
df04b624 PU |
666 | if (twl6040_get_revid(twl6040) > TWL6040_REV_ES1_0) |
667 | twl6040->audpwron = of_get_named_gpio(node, | |
668 | "ti,audpwron-gpio", 0); | |
669 | else | |
77f63e06 PU |
670 | twl6040->audpwron = -EINVAL; |
671 | ||
f19b2823 | 672 | if (gpio_is_valid(twl6040->audpwron)) { |
990810b0 | 673 | ret = devm_gpio_request_one(&client->dev, twl6040->audpwron, |
37aefe9f | 674 | GPIOF_OUT_INIT_LOW, "audpwron"); |
f19b2823 | 675 | if (ret) |
5af7df6b | 676 | goto gpio_err; |
f19b2823 MLC |
677 | } |
678 | ||
37aefe9f PU |
679 | ret = regmap_add_irq_chip(twl6040->regmap, twl6040->irq, IRQF_ONESHOT, |
680 | 0, &twl6040_irq_chip,&twl6040->irq_data); | |
ab7edb14 | 681 | if (ret < 0) |
990810b0 | 682 | goto gpio_err; |
d20e1d21 | 683 | |
ab7edb14 | 684 | twl6040->irq_ready = regmap_irq_get_virq(twl6040->irq_data, |
37aefe9f | 685 | TWL6040_IRQ_READY); |
ab7edb14 | 686 | twl6040->irq_th = regmap_irq_get_virq(twl6040->irq_data, |
37aefe9f | 687 | TWL6040_IRQ_TH); |
ab7edb14 | 688 | |
990810b0 | 689 | ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_ready, NULL, |
37aefe9f PU |
690 | twl6040_readyint_handler, IRQF_ONESHOT, |
691 | "twl6040_irq_ready", twl6040); | |
d20e1d21 | 692 | if (ret) { |
1ac96265 PU |
693 | dev_err(twl6040->dev, "READY IRQ request failed: %d\n", ret); |
694 | goto readyirq_err; | |
695 | } | |
696 | ||
990810b0 | 697 | ret = devm_request_threaded_irq(twl6040->dev, twl6040->irq_th, NULL, |
37aefe9f PU |
698 | twl6040_thint_handler, IRQF_ONESHOT, |
699 | "twl6040_irq_th", twl6040); | |
1ac96265 PU |
700 | if (ret) { |
701 | dev_err(twl6040->dev, "Thermal IRQ request failed: %d\n", ret); | |
fc5ee96f | 702 | goto readyirq_err; |
f19b2823 MLC |
703 | } |
704 | ||
705 | /* dual-access registers controlled by I2C only */ | |
706 | twl6040_set_bits(twl6040, TWL6040_REG_ACCCTL, TWL6040_I2CSEL); | |
c7f9129d PU |
707 | regmap_register_patch(twl6040->regmap, twl6040_patch, |
708 | ARRAY_SIZE(twl6040_patch)); | |
f19b2823 | 709 | |
1f01d60e PU |
710 | /* |
711 | * The main functionality of twl6040 to provide audio on OMAP4+ systems. | |
712 | * We can add the ASoC codec child whenever this driver has been loaded. | |
1f01d60e | 713 | */ |
ab7edb14 | 714 | irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_PLUG); |
1f01d60e PU |
715 | cell = &twl6040->cells[children]; |
716 | cell->name = "twl6040-codec"; | |
717 | twl6040_codec_rsrc[0].start = irq; | |
718 | twl6040_codec_rsrc[0].end = irq; | |
719 | cell->resources = twl6040_codec_rsrc; | |
720 | cell->num_resources = ARRAY_SIZE(twl6040_codec_rsrc); | |
1f01d60e | 721 | children++; |
f19b2823 | 722 | |
df04b624 PU |
723 | /* Vibra input driver support */ |
724 | if (twl6040_has_vibra(node)) { | |
ab7edb14 | 725 | irq = regmap_irq_get_virq(twl6040->irq_data, TWL6040_IRQ_VIB); |
0f962ae2 | 726 | |
f19b2823 MLC |
727 | cell = &twl6040->cells[children]; |
728 | cell->name = "twl6040-vibra"; | |
0f962ae2 PU |
729 | twl6040_vibra_rsrc[0].start = irq; |
730 | twl6040_vibra_rsrc[0].end = irq; | |
731 | cell->resources = twl6040_vibra_rsrc; | |
732 | cell->num_resources = ARRAY_SIZE(twl6040_vibra_rsrc); | |
f19b2823 MLC |
733 | children++; |
734 | } | |
735 | ||
df04b624 PU |
736 | /* GPO support */ |
737 | cell = &twl6040->cells[children]; | |
738 | cell->name = "twl6040-gpo"; | |
739 | children++; | |
5cbe786a | 740 | |
c7f9129d PU |
741 | /* The chip is powered down so mark regmap to cache only and dirty */ |
742 | regcache_cache_only(twl6040->regmap, true); | |
743 | regcache_mark_dirty(twl6040->regmap); | |
744 | ||
1f01d60e | 745 | ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children, |
55692af5 | 746 | NULL, 0, NULL); |
1f01d60e | 747 | if (ret) |
fc5ee96f | 748 | goto readyirq_err; |
f19b2823 MLC |
749 | |
750 | return 0; | |
751 | ||
1ac96265 | 752 | readyirq_err: |
ab7edb14 | 753 | regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
5af7df6b PU |
754 | gpio_err: |
755 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); | |
f19b2823 MLC |
756 | return ret; |
757 | } | |
758 | ||
612b95cd | 759 | static int twl6040_remove(struct i2c_client *client) |
f19b2823 | 760 | { |
8eaeb939 | 761 | struct twl6040 *twl6040 = i2c_get_clientdata(client); |
f19b2823 MLC |
762 | |
763 | if (twl6040->power_count) | |
764 | twl6040_power(twl6040, 0); | |
765 | ||
ab7edb14 | 766 | regmap_del_irq_chip(twl6040->irq, twl6040->irq_data); |
f19b2823 | 767 | |
8eaeb939 | 768 | mfd_remove_devices(&client->dev); |
f19b2823 | 769 | |
5af7df6b | 770 | regulator_bulk_disable(TWL6040_NUM_SUPPLIES, twl6040->supplies); |
5af7df6b | 771 | |
f19b2823 MLC |
772 | return 0; |
773 | } | |
774 | ||
8eaeb939 PU |
775 | static const struct i2c_device_id twl6040_i2c_id[] = { |
776 | { "twl6040", 0, }, | |
1fc74aef | 777 | { "twl6041", 0, }, |
8eaeb939 PU |
778 | { }, |
779 | }; | |
780 | MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id); | |
781 | ||
782 | static struct i2c_driver twl6040_driver = { | |
783 | .driver = { | |
784 | .name = "twl6040", | |
785 | .owner = THIS_MODULE, | |
786 | }, | |
f19b2823 | 787 | .probe = twl6040_probe, |
612b95cd | 788 | .remove = twl6040_remove, |
8eaeb939 | 789 | .id_table = twl6040_i2c_id, |
f19b2823 MLC |
790 | }; |
791 | ||
8eaeb939 | 792 | module_i2c_driver(twl6040_driver); |
f19b2823 MLC |
793 | |
794 | MODULE_DESCRIPTION("TWL6040 MFD"); | |
795 | MODULE_AUTHOR("Misael Lopez Cruz <misael.lopez@ti.com>"); | |
796 | MODULE_AUTHOR("Jorge Eduardo Candelaria <jorge.candelaria@ti.com>"); | |
797 | MODULE_LICENSE("GPL"); | |
798 | MODULE_ALIAS("platform:twl6040"); |