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authorMisael Lopez Cruz <x0052729@ti.com>2010-03-19 07:25:51 -0400
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-03-19 07:29:33 -0400
commit8ecbabd977dc64d2d8c9980420a3d72db06fe551 (patch)
tree106f18d7d1a403a9eebed27480dcf128154caeac /sound/soc/codecs/twl6040.c
parent27648b2f1c464f8827cc01ba4eb21580b5402947 (diff)
ASoC: TWL6040: Add twl6040 codec driver
Initial version of TWL6040 codec driver. The TWL6040 codec uses a proprietary PDM-based digital audio interface. Audio paths supported are: - Input: Main Mic, Sub Mic, Headset Mic, Auxiliary-FM Left/Right - Output: Headset Left/Right, Handsfree Left/Right TWL6040 codec supports power-up/down manual and automatic sequence. Manual sequence is done through a specific register writes sequence. Automatic sequence is done when the codec is powered-up through the external AUDPWRON line. The completion of the sequence is signaled through the audio interrupt. TWL6040 codec sysclk can be provided by: low-power or high performance PLL: - The low-power PLL takes a low-frequency input at 32,768 Hz and generates an approximate of 17.64 or 19.2 MHz (for 44.1 KHz and 48 KHz respectively) - The high-performance PLL generates an exact 19.2 MHz clock signal from high-frequency input at 12/19.2/26/38.4 MHz. Low-power playback mode is a special scenario where only headset path (headset DAC and driver) is active. For the particular case of headset path, PLL being used defines the headset power mode: low-power, high-performance. Signed-off-by: Misael Lopez Cruz <x0052729@ti.com> Signed-off-by: Jorge Eduardo Candelaria <jorge.candelaria@ti.com> Signed-off-by: Margarita Olaya Cabrera <magi.olaya@ti.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/twl6040.c')
-rwxr-xr-xsound/soc/codecs/twl6040.c1227
1 files changed, 1227 insertions, 0 deletions
diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c
new file mode 100755
index 000000000000..0e4dce7de052
--- /dev/null
+++ b/sound/soc/codecs/twl6040.c
@@ -0,0 +1,1227 @@
1/*
2 * ALSA SoC TWL6040 codec driver
3 *
4 * Author: Misael Lopez Cruz <x0052729@ti.com>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * version 2 as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
18 * 02110-1301 USA
19 *
20 */
21
22#include <linux/module.h>
23#include <linux/moduleparam.h>
24#include <linux/init.h>
25#include <linux/delay.h>
26#include <linux/pm.h>
27#include <linux/i2c.h>
28#include <linux/gpio.h>
29#include <linux/platform_device.h>
30#include <linux/i2c/twl.h>
31
32#include <sound/core.h>
33#include <sound/pcm.h>
34#include <sound/pcm_params.h>
35#include <sound/soc.h>
36#include <sound/soc-dapm.h>
37#include <sound/initval.h>
38#include <sound/tlv.h>
39
40#include "twl6040.h"
41
42#define TWL6040_RATES (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
43#define TWL6040_FORMATS (SNDRV_PCM_FMTBIT_S32_LE)
44
45/* codec private data */
46struct twl6040_data {
47 struct snd_soc_codec codec;
48 int audpwron;
49 int naudint;
50 int codec_powered;
51 int pll;
52 int non_lp;
53 unsigned int sysclk;
54 struct snd_pcm_hw_constraint_list *sysclk_constraints;
55 struct completion ready;
56};
57
58/*
59 * twl6040 register cache & default register settings
60 */
61static const u8 twl6040_reg[TWL6040_CACHEREGNUM] = {
62 0x00, /* not used 0x00 */
63 0x4B, /* TWL6040_ASICID (ro) 0x01 */
64 0x00, /* TWL6040_ASICREV (ro) 0x02 */
65 0x00, /* TWL6040_INTID 0x03 */
66 0x00, /* TWL6040_INTMR 0x04 */
67 0x00, /* TWL6040_NCPCTRL 0x05 */
68 0x00, /* TWL6040_LDOCTL 0x06 */
69 0x60, /* TWL6040_HPPLLCTL 0x07 */
70 0x00, /* TWL6040_LPPLLCTL 0x08 */
71 0x4A, /* TWL6040_LPPLLDIV 0x09 */
72 0x00, /* TWL6040_AMICBCTL 0x0A */
73 0x00, /* TWL6040_DMICBCTL 0x0B */
74 0x18, /* TWL6040_MICLCTL 0x0C - No input selected on Left Mic */
75 0x18, /* TWL6040_MICRCTL 0x0D - No input selected on Right Mic */
76 0x00, /* TWL6040_MICGAIN 0x0E */
77 0x1B, /* TWL6040_LINEGAIN 0x0F */
78 0x00, /* TWL6040_HSLCTL 0x10 */
79 0x00, /* TWL6040_HSRCTL 0x11 */
80 0x00, /* TWL6040_HSGAIN 0x12 */
81 0x00, /* TWL6040_EARCTL 0x13 */
82 0x00, /* TWL6040_HFLCTL 0x14 */
83 0x00, /* TWL6040_HFLGAIN 0x15 */
84 0x00, /* TWL6040_HFRCTL 0x16 */
85 0x00, /* TWL6040_HFRGAIN 0x17 */
86 0x00, /* TWL6040_VIBCTLL 0x18 */
87 0x00, /* TWL6040_VIBDATL 0x19 */
88 0x00, /* TWL6040_VIBCTLR 0x1A */
89 0x00, /* TWL6040_VIBDATR 0x1B */
90 0x00, /* TWL6040_HKCTL1 0x1C */
91 0x00, /* TWL6040_HKCTL2 0x1D */
92 0x00, /* TWL6040_GPOCTL 0x1E */
93 0x00, /* TWL6040_ALB 0x1F */
94 0x00, /* TWL6040_DLB 0x20 */
95 0x00, /* not used 0x21 */
96 0x00, /* not used 0x22 */
97 0x00, /* not used 0x23 */
98 0x00, /* not used 0x24 */
99 0x00, /* not used 0x25 */
100 0x00, /* not used 0x26 */
101 0x00, /* not used 0x27 */
102 0x00, /* TWL6040_TRIM1 0x28 */
103 0x00, /* TWL6040_TRIM2 0x29 */
104 0x00, /* TWL6040_TRIM3 0x2A */
105 0x00, /* TWL6040_HSOTRIM 0x2B */
106 0x00, /* TWL6040_HFOTRIM 0x2C */
107 0x09, /* TWL6040_ACCCTL 0x2D */
108 0x00, /* TWL6040_STATUS (ro) 0x2E */
109};
110
111/*
112 * twl6040 vio/gnd registers:
113 * registers under vio/gnd supply can be accessed
114 * before the power-up sequence, after NRESPWRON goes high
115 */
116static const int twl6040_vio_reg[TWL6040_VIOREGNUM] = {
117 TWL6040_REG_ASICID,
118 TWL6040_REG_ASICREV,
119 TWL6040_REG_INTID,
120 TWL6040_REG_INTMR,
121 TWL6040_REG_NCPCTL,
122 TWL6040_REG_LDOCTL,
123 TWL6040_REG_AMICBCTL,
124 TWL6040_REG_DMICBCTL,
125 TWL6040_REG_HKCTL1,
126 TWL6040_REG_HKCTL2,
127 TWL6040_REG_GPOCTL,
128 TWL6040_REG_TRIM1,
129 TWL6040_REG_TRIM2,
130 TWL6040_REG_TRIM3,
131 TWL6040_REG_HSOTRIM,
132 TWL6040_REG_HFOTRIM,
133 TWL6040_REG_ACCCTL,
134 TWL6040_REG_STATUS,
135};
136
137/*
138 * twl6040 vdd/vss registers:
139 * registers under vdd/vss supplies can only be accessed
140 * after the power-up sequence
141 */
142static const int twl6040_vdd_reg[TWL6040_VDDREGNUM] = {
143 TWL6040_REG_HPPLLCTL,
144 TWL6040_REG_LPPLLCTL,
145 TWL6040_REG_LPPLLDIV,
146 TWL6040_REG_MICLCTL,
147 TWL6040_REG_MICRCTL,
148 TWL6040_REG_MICGAIN,
149 TWL6040_REG_LINEGAIN,
150 TWL6040_REG_HSLCTL,
151 TWL6040_REG_HSRCTL,
152 TWL6040_REG_HSGAIN,
153 TWL6040_REG_EARCTL,
154 TWL6040_REG_HFLCTL,
155 TWL6040_REG_HFLGAIN,
156 TWL6040_REG_HFRCTL,
157 TWL6040_REG_HFRGAIN,
158 TWL6040_REG_VIBCTLL,
159 TWL6040_REG_VIBDATL,
160 TWL6040_REG_VIBCTLR,
161 TWL6040_REG_VIBDATR,
162 TWL6040_REG_ALB,
163 TWL6040_REG_DLB,
164};
165
166/*
167 * read twl6040 register cache
168 */
169static inline unsigned int twl6040_read_reg_cache(struct snd_soc_codec *codec,
170 unsigned int reg)
171{
172 u8 *cache = codec->reg_cache;
173
174 if (reg >= TWL6040_CACHEREGNUM)
175 return -EIO;
176
177 return cache[reg];
178}
179
180/*
181 * write twl6040 register cache
182 */
183static inline void twl6040_write_reg_cache(struct snd_soc_codec *codec,
184 u8 reg, u8 value)
185{
186 u8 *cache = codec->reg_cache;
187
188 if (reg >= TWL6040_CACHEREGNUM)
189 return;
190 cache[reg] = value;
191}
192
193/*
194 * read from twl6040 hardware register
195 */
196static int twl6040_read_reg_volatile(struct snd_soc_codec *codec,
197 unsigned int reg)
198{
199 u8 value;
200
201 if (reg >= TWL6040_CACHEREGNUM)
202 return -EIO;
203
204 twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &value, reg);
205 twl6040_write_reg_cache(codec, reg, value);
206
207 return value;
208}
209
210/*
211 * write to the twl6040 register space
212 */
213static int twl6040_write(struct snd_soc_codec *codec,
214 unsigned int reg, unsigned int value)
215{
216 if (reg >= TWL6040_CACHEREGNUM)
217 return -EIO;
218
219 twl6040_write_reg_cache(codec, reg, value);
220 return twl_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg);
221}
222
223static void twl6040_init_vio_regs(struct snd_soc_codec *codec)
224{
225 u8 *cache = codec->reg_cache;
226 int reg, i;
227
228 /* allow registers to be accessed by i2c */
229 twl6040_write(codec, TWL6040_REG_ACCCTL, cache[TWL6040_REG_ACCCTL]);
230
231 for (i = 0; i < TWL6040_VIOREGNUM; i++) {
232 reg = twl6040_vio_reg[i];
233 /* skip read-only registers (ASICID, ASICREV, STATUS) */
234 switch (reg) {
235 case TWL6040_REG_ASICID:
236 case TWL6040_REG_ASICREV:
237 case TWL6040_REG_STATUS:
238 continue;
239 default:
240 break;
241 }
242 twl6040_write(codec, reg, cache[reg]);
243 }
244}
245
246static void twl6040_init_vdd_regs(struct snd_soc_codec *codec)
247{
248 u8 *cache = codec->reg_cache;
249 int reg, i;
250
251 for (i = 0; i < TWL6040_VDDREGNUM; i++) {
252 reg = twl6040_vdd_reg[i];
253 twl6040_write(codec, reg, cache[reg]);
254 }
255}
256
257/* twl6040 codec manual power-up sequence */
258static void twl6040_power_up(struct snd_soc_codec *codec)
259{
260 u8 ncpctl, ldoctl, lppllctl, accctl;
261
262 ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
263 ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
264 lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
265 accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
266
267 /* enable reference system */
268 ldoctl |= TWL6040_REFENA;
269 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
270 msleep(10);
271 /* enable internal oscillator */
272 ldoctl |= TWL6040_OSCENA;
273 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
274 udelay(10);
275 /* enable high-side ldo */
276 ldoctl |= TWL6040_HSLDOENA;
277 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
278 udelay(244);
279 /* enable negative charge pump */
280 ncpctl |= TWL6040_NCPENA | TWL6040_NCPOPEN;
281 twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
282 udelay(488);
283 /* enable low-side ldo */
284 ldoctl |= TWL6040_LSLDOENA;
285 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
286 udelay(244);
287 /* enable low-power pll */
288 lppllctl |= TWL6040_LPLLENA;
289 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
290 /* reset state machine */
291 accctl |= TWL6040_RESETSPLIT;
292 twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
293 mdelay(5);
294 accctl &= ~TWL6040_RESETSPLIT;
295 twl6040_write(codec, TWL6040_REG_ACCCTL, accctl);
296 /* disable internal oscillator */
297 ldoctl &= ~TWL6040_OSCENA;
298 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
299}
300
301/* twl6040 codec manual power-down sequence */
302static void twl6040_power_down(struct snd_soc_codec *codec)
303{
304 u8 ncpctl, ldoctl, lppllctl, accctl;
305
306 ncpctl = twl6040_read_reg_cache(codec, TWL6040_REG_NCPCTL);
307 ldoctl = twl6040_read_reg_cache(codec, TWL6040_REG_LDOCTL);
308 lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
309 accctl = twl6040_read_reg_cache(codec, TWL6040_REG_ACCCTL);
310
311 /* enable internal oscillator */
312 ldoctl |= TWL6040_OSCENA;
313 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
314 udelay(10);
315 /* disable low-power pll */
316 lppllctl &= ~TWL6040_LPLLENA;
317 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
318 /* disable low-side ldo */
319 ldoctl &= ~TWL6040_LSLDOENA;
320 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
321 udelay(244);
322 /* disable negative charge pump */
323 ncpctl &= ~(TWL6040_NCPENA | TWL6040_NCPOPEN);
324 twl6040_write(codec, TWL6040_REG_NCPCTL, ncpctl);
325 udelay(488);
326 /* disable high-side ldo */
327 ldoctl &= ~TWL6040_HSLDOENA;
328 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
329 udelay(244);
330 /* disable internal oscillator */
331 ldoctl &= ~TWL6040_OSCENA;
332 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
333 /* disable reference system */
334 ldoctl &= ~TWL6040_REFENA;
335 twl6040_write(codec, TWL6040_REG_LDOCTL, ldoctl);
336 msleep(10);
337}
338
339/* set headset dac and driver power mode */
340static int headset_power_mode(struct snd_soc_codec *codec, int high_perf)
341{
342 int hslctl, hsrctl;
343 int mask = TWL6040_HSDRVMODEL | TWL6040_HSDACMODEL;
344
345 hslctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSLCTL);
346 hsrctl = twl6040_read_reg_cache(codec, TWL6040_REG_HSRCTL);
347
348 if (high_perf) {
349 hslctl &= ~mask;
350 hsrctl &= ~mask;
351 } else {
352 hslctl |= mask;
353 hsrctl |= mask;
354 }
355
356 twl6040_write(codec, TWL6040_REG_HSLCTL, hslctl);
357 twl6040_write(codec, TWL6040_REG_HSRCTL, hsrctl);
358
359 return 0;
360}
361
362static int twl6040_power_mode_event(struct snd_soc_dapm_widget *w,
363 struct snd_kcontrol *kcontrol, int event)
364{
365 struct snd_soc_codec *codec = w->codec;
366 struct twl6040_data *priv = codec->private_data;
367
368 if (SND_SOC_DAPM_EVENT_ON(event))
369 priv->non_lp++;
370 else
371 priv->non_lp--;
372
373 return 0;
374}
375
376/* audio interrupt handler */
377static irqreturn_t twl6040_naudint_handler(int irq, void *data)
378{
379 struct snd_soc_codec *codec = data;
380 struct twl6040_data *priv = codec->private_data;
381 u8 intid;
382
383 twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &intid, TWL6040_REG_INTID);
384
385 switch (intid) {
386 case TWL6040_THINT:
387 dev_alert(codec->dev, "die temp over-limit detection\n");
388 break;
389 case TWL6040_PLUGINT:
390 case TWL6040_UNPLUGINT:
391 case TWL6040_HOOKINT:
392 break;
393 case TWL6040_HFINT:
394 dev_alert(codec->dev, "hf drivers over current detection\n");
395 break;
396 case TWL6040_VIBINT:
397 dev_alert(codec->dev, "vib drivers over current detection\n");
398 break;
399 case TWL6040_READYINT:
400 complete(&priv->ready);
401 break;
402 default:
403 dev_err(codec->dev, "unknown audio interrupt %d\n", intid);
404 break;
405 }
406
407 return IRQ_HANDLED;
408}
409
410/*
411 * MICATT volume control:
412 * from -6 to 0 dB in 6 dB steps
413 */
414static DECLARE_TLV_DB_SCALE(mic_preamp_tlv, -600, 600, 0);
415
416/*
417 * MICGAIN volume control:
418 * from 6 to 30 dB in 6 dB steps
419 */
420static DECLARE_TLV_DB_SCALE(mic_amp_tlv, 600, 600, 0);
421
422/*
423 * HSGAIN volume control:
424 * from -30 to 0 dB in 2 dB steps
425 */
426static DECLARE_TLV_DB_SCALE(hs_tlv, -3000, 200, 0);
427
428/*
429 * HFGAIN volume control:
430 * from -52 to 6 dB in 2 dB steps
431 */
432static DECLARE_TLV_DB_SCALE(hf_tlv, -5200, 200, 0);
433
434/* Left analog microphone selection */
435static const char *twl6040_amicl_texts[] =
436 {"Headset Mic", "Main Mic", "Aux/FM Left", "Off"};
437
438/* Right analog microphone selection */
439static const char *twl6040_amicr_texts[] =
440 {"Headset Mic", "Sub Mic", "Aux/FM Right", "Off"};
441
442static const struct soc_enum twl6040_enum[] = {
443 SOC_ENUM_SINGLE(TWL6040_REG_MICLCTL, 3, 3, twl6040_amicl_texts),
444 SOC_ENUM_SINGLE(TWL6040_REG_MICRCTL, 3, 3, twl6040_amicr_texts),
445};
446
447static const struct snd_kcontrol_new amicl_control =
448 SOC_DAPM_ENUM("Route", twl6040_enum[0]);
449
450static const struct snd_kcontrol_new amicr_control =
451 SOC_DAPM_ENUM("Route", twl6040_enum[1]);
452
453/* Headset DAC playback switches */
454static const struct snd_kcontrol_new hsdacl_switch_controls =
455 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSLCTL, 5, 1, 0);
456
457static const struct snd_kcontrol_new hsdacr_switch_controls =
458 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSRCTL, 5, 1, 0);
459
460/* Handsfree DAC playback switches */
461static const struct snd_kcontrol_new hfdacl_switch_controls =
462 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 2, 1, 0);
463
464static const struct snd_kcontrol_new hfdacr_switch_controls =
465 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 2, 1, 0);
466
467/* Headset driver switches */
468static const struct snd_kcontrol_new hsl_driver_switch_controls =
469 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSLCTL, 2, 1, 0);
470
471static const struct snd_kcontrol_new hsr_driver_switch_controls =
472 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HSRCTL, 2, 1, 0);
473
474/* Handsfree driver switches */
475static const struct snd_kcontrol_new hfl_driver_switch_controls =
476 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFLCTL, 4, 1, 0);
477
478static const struct snd_kcontrol_new hfr_driver_switch_controls =
479 SOC_DAPM_SINGLE("Switch", TWL6040_REG_HFRCTL, 4, 1, 0);
480
481static const struct snd_kcontrol_new twl6040_snd_controls[] = {
482 /* Capture gains */
483 SOC_DOUBLE_TLV("Capture Preamplifier Volume",
484 TWL6040_REG_MICGAIN, 6, 7, 1, 1, mic_preamp_tlv),
485 SOC_DOUBLE_TLV("Capture Volume",
486 TWL6040_REG_MICGAIN, 0, 3, 4, 0, mic_amp_tlv),
487
488 /* Playback gains */
489 SOC_DOUBLE_TLV("Headset Playback Volume",
490 TWL6040_REG_HSGAIN, 0, 4, 0xF, 1, hs_tlv),
491 SOC_DOUBLE_R_TLV("Handsfree Playback Volume",
492 TWL6040_REG_HFLGAIN, TWL6040_REG_HFRGAIN, 0, 0x1D, 1, hf_tlv),
493
494};
495
496static const struct snd_soc_dapm_widget twl6040_dapm_widgets[] = {
497 /* Inputs */
498 SND_SOC_DAPM_INPUT("MAINMIC"),
499 SND_SOC_DAPM_INPUT("HSMIC"),
500 SND_SOC_DAPM_INPUT("SUBMIC"),
501 SND_SOC_DAPM_INPUT("AFML"),
502 SND_SOC_DAPM_INPUT("AFMR"),
503
504 /* Outputs */
505 SND_SOC_DAPM_OUTPUT("HSOL"),
506 SND_SOC_DAPM_OUTPUT("HSOR"),
507 SND_SOC_DAPM_OUTPUT("HFL"),
508 SND_SOC_DAPM_OUTPUT("HFR"),
509
510 /* Analog input muxes for the capture amplifiers */
511 SND_SOC_DAPM_MUX("Analog Left Capture Route",
512 SND_SOC_NOPM, 0, 0, &amicl_control),
513 SND_SOC_DAPM_MUX("Analog Right Capture Route",
514 SND_SOC_NOPM, 0, 0, &amicr_control),
515
516 /* Analog capture PGAs */
517 SND_SOC_DAPM_PGA("MicAmpL",
518 TWL6040_REG_MICLCTL, 0, 0, NULL, 0),
519 SND_SOC_DAPM_PGA("MicAmpR",
520 TWL6040_REG_MICRCTL, 0, 0, NULL, 0),
521
522 /* ADCs */
523 SND_SOC_DAPM_ADC("ADC Left", "Left Front Capture",
524 TWL6040_REG_MICLCTL, 2, 0),
525 SND_SOC_DAPM_ADC("ADC Right", "Right Front Capture",
526 TWL6040_REG_MICRCTL, 2, 0),
527
528 /* Microphone bias */
529 SND_SOC_DAPM_MICBIAS("Headset Mic Bias",
530 TWL6040_REG_AMICBCTL, 0, 0),
531 SND_SOC_DAPM_MICBIAS("Main Mic Bias",
532 TWL6040_REG_AMICBCTL, 4, 0),
533 SND_SOC_DAPM_MICBIAS("Digital Mic1 Bias",
534 TWL6040_REG_DMICBCTL, 0, 0),
535 SND_SOC_DAPM_MICBIAS("Digital Mic2 Bias",
536 TWL6040_REG_DMICBCTL, 4, 0),
537
538 /* DACs */
539 SND_SOC_DAPM_DAC("HSDAC Left", "Headset Playback",
540 TWL6040_REG_HSLCTL, 0, 0),
541 SND_SOC_DAPM_DAC("HSDAC Right", "Headset Playback",
542 TWL6040_REG_HSRCTL, 0, 0),
543 SND_SOC_DAPM_DAC_E("HFDAC Left", "Handsfree Playback",
544 TWL6040_REG_HFLCTL, 0, 0,
545 twl6040_power_mode_event,
546 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
547 SND_SOC_DAPM_DAC_E("HFDAC Right", "Handsfree Playback",
548 TWL6040_REG_HFRCTL, 0, 0,
549 twl6040_power_mode_event,
550 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
551
552 /* Analog playback switches */
553 SND_SOC_DAPM_SWITCH("HSDAC Left Playback",
554 SND_SOC_NOPM, 0, 0, &hsdacl_switch_controls),
555 SND_SOC_DAPM_SWITCH("HSDAC Right Playback",
556 SND_SOC_NOPM, 0, 0, &hsdacr_switch_controls),
557 SND_SOC_DAPM_SWITCH("HFDAC Left Playback",
558 SND_SOC_NOPM, 0, 0, &hfdacl_switch_controls),
559 SND_SOC_DAPM_SWITCH("HFDAC Right Playback",
560 SND_SOC_NOPM, 0, 0, &hfdacr_switch_controls),
561
562 SND_SOC_DAPM_SWITCH("Headset Left Driver",
563 SND_SOC_NOPM, 0, 0, &hsl_driver_switch_controls),
564 SND_SOC_DAPM_SWITCH("Headset Right Driver",
565 SND_SOC_NOPM, 0, 0, &hsr_driver_switch_controls),
566 SND_SOC_DAPM_SWITCH_E("Handsfree Left Driver",
567 SND_SOC_NOPM, 0, 0, &hfl_driver_switch_controls,
568 twl6040_power_mode_event,
569 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
570 SND_SOC_DAPM_SWITCH_E("Handsfree Right Driver",
571 SND_SOC_NOPM, 0, 0, &hfr_driver_switch_controls,
572 twl6040_power_mode_event,
573 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
574
575 /* Analog playback PGAs */
576 SND_SOC_DAPM_PGA("HFDAC Left PGA",
577 TWL6040_REG_HFLCTL, 1, 0, NULL, 0),
578 SND_SOC_DAPM_PGA("HFDAC Right PGA",
579 TWL6040_REG_HFRCTL, 1, 0, NULL, 0),
580
581};
582
583static const struct snd_soc_dapm_route intercon[] = {
584 /* Capture path */
585 {"Analog Left Capture Route", "Headset Mic", "HSMIC"},
586 {"Analog Left Capture Route", "Main Mic", "MAINMIC"},
587 {"Analog Left Capture Route", "Aux/FM Left", "AFML"},
588
589 {"Analog Right Capture Route", "Headset Mic", "HSMIC"},
590 {"Analog Right Capture Route", "Sub Mic", "SUBMIC"},
591 {"Analog Right Capture Route", "Aux/FM Right", "AFMR"},
592
593 {"MicAmpL", NULL, "Analog Left Capture Route"},
594 {"MicAmpR", NULL, "Analog Right Capture Route"},
595
596 {"ADC Left", NULL, "MicAmpL"},
597 {"ADC Right", NULL, "MicAmpR"},
598
599 /* Headset playback path */
600 {"HSDAC Left Playback", "Switch", "HSDAC Left"},
601 {"HSDAC Right Playback", "Switch", "HSDAC Right"},
602
603 {"Headset Left Driver", "Switch", "HSDAC Left Playback"},
604 {"Headset Right Driver", "Switch", "HSDAC Right Playback"},
605
606 {"HSOL", NULL, "Headset Left Driver"},
607 {"HSOR", NULL, "Headset Right Driver"},
608
609 /* Handsfree playback path */
610 {"HFDAC Left Playback", "Switch", "HFDAC Left"},
611 {"HFDAC Right Playback", "Switch", "HFDAC Right"},
612
613 {"HFDAC Left PGA", NULL, "HFDAC Left Playback"},
614 {"HFDAC Right PGA", NULL, "HFDAC Right Playback"},
615
616 {"Handsfree Left Driver", "Switch", "HFDAC Left PGA"},
617 {"Handsfree Right Driver", "Switch", "HFDAC Right PGA"},
618
619 {"HFL", NULL, "Handsfree Left Driver"},
620 {"HFR", NULL, "Handsfree Right Driver"},
621};
622
623static int twl6040_add_widgets(struct snd_soc_codec *codec)
624{
625 snd_soc_dapm_new_controls(codec, twl6040_dapm_widgets,
626 ARRAY_SIZE(twl6040_dapm_widgets));
627
628 snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
629
630 snd_soc_dapm_new_widgets(codec);
631
632 return 0;
633}
634
635static int twl6040_power_up_completion(struct snd_soc_codec *codec,
636 int naudint)
637{
638 struct twl6040_data *priv = codec->private_data;
639 int time_left;
640 u8 intid;
641
642 time_left = wait_for_completion_timeout(&priv->ready,
643 msecs_to_jiffies(48));
644
645 if (!time_left) {
646 twl_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &intid,
647 TWL6040_REG_INTID);
648 if (!(intid & TWL6040_READYINT)) {
649 dev_err(codec->dev, "timeout waiting for READYINT\n");
650 return -ETIMEDOUT;
651 }
652 }
653
654 priv->codec_powered = 1;
655
656 return 0;
657}
658
659static int twl6040_set_bias_level(struct snd_soc_codec *codec,
660 enum snd_soc_bias_level level)
661{
662 struct twl6040_data *priv = codec->private_data;
663 int audpwron = priv->audpwron;
664 int naudint = priv->naudint;
665 int ret;
666
667 switch (level) {
668 case SND_SOC_BIAS_ON:
669 break;
670 case SND_SOC_BIAS_PREPARE:
671 break;
672 case SND_SOC_BIAS_STANDBY:
673 if (priv->codec_powered)
674 break;
675
676 if (gpio_is_valid(audpwron)) {
677 /* use AUDPWRON line */
678 gpio_set_value(audpwron, 1);
679
680 /* wait for power-up completion */
681 ret = twl6040_power_up_completion(codec, naudint);
682 if (ret)
683 return ret;
684
685 /* sync registers updated during power-up sequence */
686 twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
687 twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
688 twl6040_read_reg_volatile(codec, TWL6040_REG_LPPLLCTL);
689 } else {
690 /* use manual power-up sequence */
691 twl6040_power_up(codec);
692 priv->codec_powered = 1;
693 }
694
695 /* initialize vdd/vss registers with reg_cache */
696 twl6040_init_vdd_regs(codec);
697 break;
698 case SND_SOC_BIAS_OFF:
699 if (!priv->codec_powered)
700 break;
701
702 if (gpio_is_valid(audpwron)) {
703 /* use AUDPWRON line */
704 gpio_set_value(audpwron, 0);
705
706 /* power-down sequence latency */
707 udelay(500);
708
709 /* sync registers updated during power-down sequence */
710 twl6040_read_reg_volatile(codec, TWL6040_REG_NCPCTL);
711 twl6040_read_reg_volatile(codec, TWL6040_REG_LDOCTL);
712 twl6040_write_reg_cache(codec, TWL6040_REG_LPPLLCTL,
713 0x00);
714 } else {
715 /* use manual power-down sequence */
716 twl6040_power_down(codec);
717 }
718
719 priv->codec_powered = 0;
720 break;
721 }
722
723 codec->bias_level = level;
724
725 return 0;
726}
727
728/* set of rates for each pll: low-power and high-performance */
729
730static unsigned int lp_rates[] = {
731 88200,
732 96000,
733};
734
735static struct snd_pcm_hw_constraint_list lp_constraints = {
736 .count = ARRAY_SIZE(lp_rates),
737 .list = lp_rates,
738};
739
740static unsigned int hp_rates[] = {
741 96000,
742};
743
744static struct snd_pcm_hw_constraint_list hp_constraints = {
745 .count = ARRAY_SIZE(hp_rates),
746 .list = hp_rates,
747};
748
749static int twl6040_startup(struct snd_pcm_substream *substream,
750 struct snd_soc_dai *dai)
751{
752 struct snd_soc_pcm_runtime *rtd = substream->private_data;
753 struct snd_soc_device *socdev = rtd->socdev;
754 struct snd_soc_codec *codec = socdev->card->codec;
755 struct twl6040_data *priv = codec->private_data;
756
757 if (!priv->sysclk) {
758 dev_err(codec->dev,
759 "no mclk configured, call set_sysclk() on init\n");
760 return -EINVAL;
761 }
762
763 /*
764 * capture is not supported at 17.64 MHz,
765 * it's reserved for headset low-power playback scenario
766 */
767 if ((priv->sysclk == 17640000) && substream->stream) {
768 dev_err(codec->dev,
769 "capture mode is not supported at %dHz\n",
770 priv->sysclk);
771 return -EINVAL;
772 }
773
774 snd_pcm_hw_constraint_list(substream->runtime, 0,
775 SNDRV_PCM_HW_PARAM_RATE,
776 priv->sysclk_constraints);
777
778 return 0;
779}
780
781static int twl6040_hw_params(struct snd_pcm_substream *substream,
782 struct snd_pcm_hw_params *params,
783 struct snd_soc_dai *dai)
784{
785 struct snd_soc_pcm_runtime *rtd = substream->private_data;
786 struct snd_soc_device *socdev = rtd->socdev;
787 struct snd_soc_codec *codec = socdev->card->codec;
788 struct twl6040_data *priv = codec->private_data;
789 u8 lppllctl;
790 int rate;
791
792 /* nothing to do for high-perf pll, it supports only 48 kHz */
793 if (priv->pll == TWL6040_HPPLL_ID)
794 return 0;
795
796 lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
797
798 rate = params_rate(params);
799 switch (rate) {
800 case 88200:
801 lppllctl |= TWL6040_LPLLFIN;
802 priv->sysclk = 17640000;
803 break;
804 case 96000:
805 lppllctl &= ~TWL6040_LPLLFIN;
806 priv->sysclk = 19200000;
807 break;
808 default:
809 dev_err(codec->dev, "unsupported rate %d\n", rate);
810 return -EINVAL;
811 }
812
813 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
814
815 return 0;
816}
817
818static int twl6040_trigger(struct snd_pcm_substream *substream,
819 int cmd, struct snd_soc_dai *dai)
820{
821 struct snd_soc_pcm_runtime *rtd = substream->private_data;
822 struct snd_soc_device *socdev = rtd->socdev;
823 struct snd_soc_codec *codec = socdev->card->codec;
824 struct twl6040_data *priv = codec->private_data;
825
826 switch (cmd) {
827 case SNDRV_PCM_TRIGGER_START:
828 case SNDRV_PCM_TRIGGER_RESUME:
829 /*
830 * low-power playback mode is restricted
831 * for headset path only
832 */
833 if ((priv->sysclk == 17640000) && priv->non_lp) {
834 dev_err(codec->dev,
835 "some enabled paths aren't supported at %dHz\n",
836 priv->sysclk);
837 return -EPERM;
838 }
839 break;
840 default:
841 break;
842 }
843
844 return 0;
845}
846
847static int twl6040_set_dai_sysclk(struct snd_soc_dai *codec_dai,
848 int clk_id, unsigned int freq, int dir)
849{
850 struct snd_soc_codec *codec = codec_dai->codec;
851 struct twl6040_data *priv = codec->private_data;
852 u8 hppllctl, lppllctl;
853
854 hppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_HPPLLCTL);
855 lppllctl = twl6040_read_reg_cache(codec, TWL6040_REG_LPPLLCTL);
856
857 switch (clk_id) {
858 case TWL6040_SYSCLK_SEL_LPPLL:
859 switch (freq) {
860 case 32768:
861 /* headset dac and driver must be in low-power mode */
862 headset_power_mode(codec, 0);
863
864 /* clk32k input requires low-power pll */
865 lppllctl |= TWL6040_LPLLENA;
866 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
867 mdelay(5);
868 lppllctl &= ~TWL6040_HPLLSEL;
869 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
870 hppllctl &= ~TWL6040_HPLLENA;
871 twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
872 break;
873 default:
874 dev_err(codec->dev, "unknown mclk freq %d\n", freq);
875 return -EINVAL;
876 }
877
878 /* lppll divider */
879 switch (priv->sysclk) {
880 case 17640000:
881 lppllctl |= TWL6040_LPLLFIN;
882 break;
883 case 19200000:
884 lppllctl &= ~TWL6040_LPLLFIN;
885 break;
886 default:
887 /* sysclk not yet configured */
888 lppllctl &= ~TWL6040_LPLLFIN;
889 priv->sysclk = 19200000;
890 break;
891 }
892
893 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
894
895 priv->pll = TWL6040_LPPLL_ID;
896 priv->sysclk_constraints = &lp_constraints;
897 break;
898 case TWL6040_SYSCLK_SEL_HPPLL:
899 hppllctl &= ~TWL6040_MCLK_MSK;
900
901 switch (freq) {
902 case 12000000:
903 /* mclk input, pll enabled */
904 hppllctl |= TWL6040_MCLK_12000KHZ |
905 TWL6040_HPLLSQRBP |
906 TWL6040_HPLLENA;
907 break;
908 case 19200000:
909 /* mclk input, pll disabled */
910 hppllctl |= TWL6040_MCLK_19200KHZ |
911 TWL6040_HPLLSQRBP |
912 TWL6040_HPLLBP;
913 break;
914 case 26000000:
915 /* mclk input, pll enabled */
916 hppllctl |= TWL6040_MCLK_26000KHZ |
917 TWL6040_HPLLSQRBP |
918 TWL6040_HPLLENA;
919 break;
920 case 38400000:
921 /* clk slicer, pll disabled */
922 hppllctl |= TWL6040_MCLK_38400KHZ |
923 TWL6040_HPLLSQRENA |
924 TWL6040_HPLLBP;
925 break;
926 default:
927 dev_err(codec->dev, "unknown mclk freq %d\n", freq);
928 return -EINVAL;
929 }
930
931 /* headset dac and driver must be in high-performance mode */
932 headset_power_mode(codec, 1);
933
934 twl6040_write(codec, TWL6040_REG_HPPLLCTL, hppllctl);
935 udelay(500);
936 lppllctl |= TWL6040_HPLLSEL;
937 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
938 lppllctl &= ~TWL6040_LPLLENA;
939 twl6040_write(codec, TWL6040_REG_LPPLLCTL, lppllctl);
940
941 /* high-performance pll can provide only 19.2 MHz */
942 priv->pll = TWL6040_HPPLL_ID;
943 priv->sysclk = 19200000;
944 priv->sysclk_constraints = &hp_constraints;
945 break;
946 default:
947 dev_err(codec->dev, "unknown clk_id %d\n", clk_id);
948 return -EINVAL;
949 }
950
951 return 0;
952}
953
954static struct snd_soc_dai_ops twl6040_dai_ops = {
955 .startup = twl6040_startup,
956 .hw_params = twl6040_hw_params,
957 .trigger = twl6040_trigger,
958 .set_sysclk = twl6040_set_dai_sysclk,
959};
960
961struct snd_soc_dai twl6040_dai = {
962 .name = "twl6040",
963 .playback = {
964 .stream_name = "Playback",
965 .channels_min = 1,
966 .channels_max = 4,
967 .rates = TWL6040_RATES,
968 .formats = TWL6040_FORMATS,
969 },
970 .capture = {
971 .stream_name = "Capture",
972 .channels_min = 1,
973 .channels_max = 2,
974 .rates = TWL6040_RATES,
975 .formats = TWL6040_FORMATS,
976 },
977 .ops = &twl6040_dai_ops,
978};
979EXPORT_SYMBOL_GPL(twl6040_dai);
980
981#ifdef CONFIG_PM
982static int twl6040_suspend(struct platform_device *pdev, pm_message_t state)
983{
984 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
985 struct snd_soc_codec *codec = socdev->card->codec;
986
987 twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
988
989 return 0;
990}
991
992static int twl6040_resume(struct platform_device *pdev)
993{
994 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
995 struct snd_soc_codec *codec = socdev->card->codec;
996
997 twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
998 twl6040_set_bias_level(codec, codec->suspend_bias_level);
999
1000 return 0;
1001}
1002#else
1003#define twl6040_suspend NULL
1004#define twl6040_resume NULL
1005#endif
1006
1007static struct snd_soc_codec *twl6040_codec;
1008
1009static int twl6040_probe(struct platform_device *pdev)
1010{
1011 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1012 struct snd_soc_codec *codec;
1013 int ret = 0;
1014
1015 BUG_ON(!twl6040_codec);
1016
1017 codec = twl6040_codec;
1018 socdev->card->codec = codec;
1019
1020 /* register pcms */
1021 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
1022 if (ret < 0) {
1023 dev_err(&pdev->dev, "failed to create pcms\n");
1024 return ret;
1025 }
1026
1027 snd_soc_add_controls(codec, twl6040_snd_controls,
1028 ARRAY_SIZE(twl6040_snd_controls));
1029 twl6040_add_widgets(codec);
1030
1031 if (ret < 0) {
1032 dev_err(&pdev->dev, "failed to register card\n");
1033 goto card_err;
1034 }
1035
1036 return ret;
1037
1038card_err:
1039 snd_soc_free_pcms(socdev);
1040 snd_soc_dapm_free(socdev);
1041 return ret;
1042}
1043
1044static int twl6040_remove(struct platform_device *pdev)
1045{
1046 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1047 struct snd_soc_codec *codec = socdev->card->codec;
1048
1049 twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1050 snd_soc_free_pcms(socdev);
1051 snd_soc_dapm_free(socdev);
1052 kfree(codec);
1053
1054 return 0;
1055}
1056
1057struct snd_soc_codec_device soc_codec_dev_twl6040 = {
1058 .probe = twl6040_probe,
1059 .remove = twl6040_remove,
1060 .suspend = twl6040_suspend,
1061 .resume = twl6040_resume,
1062};
1063EXPORT_SYMBOL_GPL(soc_codec_dev_twl6040);
1064
1065static int __devinit twl6040_codec_probe(struct platform_device *pdev)
1066{
1067 struct twl4030_codec_data *twl_codec = pdev->dev.platform_data;
1068 struct snd_soc_codec *codec;
1069 struct twl6040_data *priv;
1070 int audpwron, naudint;
1071 int ret = 0;
1072
1073 priv = kzalloc(sizeof(struct twl6040_data), GFP_KERNEL);
1074 if (priv == NULL)
1075 return -ENOMEM;
1076
1077 if (twl_codec) {
1078 audpwron = twl_codec->audpwron_gpio;
1079 naudint = twl_codec->naudint_irq;
1080 } else {
1081 audpwron = -EINVAL;
1082 naudint = 0;
1083 }
1084
1085 priv->audpwron = audpwron;
1086 priv->naudint = naudint;
1087
1088 codec = &priv->codec;
1089 codec->dev = &pdev->dev;
1090 twl6040_dai.dev = &pdev->dev;
1091
1092 codec->name = "twl6040";
1093 codec->owner = THIS_MODULE;
1094 codec->read = twl6040_read_reg_cache;
1095 codec->write = twl6040_write;
1096 codec->set_bias_level = twl6040_set_bias_level;
1097 codec->private_data = priv;
1098 codec->dai = &twl6040_dai;
1099 codec->num_dai = 1;
1100 codec->reg_cache_size = ARRAY_SIZE(twl6040_reg);
1101 codec->reg_cache = kmemdup(twl6040_reg, sizeof(twl6040_reg),
1102 GFP_KERNEL);
1103 if (codec->reg_cache == NULL) {
1104 ret = -ENOMEM;
1105 goto cache_err;
1106 }
1107
1108 mutex_init(&codec->mutex);
1109 INIT_LIST_HEAD(&codec->dapm_widgets);
1110 INIT_LIST_HEAD(&codec->dapm_paths);
1111 init_completion(&priv->ready);
1112
1113 if (gpio_is_valid(audpwron)) {
1114 ret = gpio_request(audpwron, "audpwron");
1115 if (ret)
1116 goto gpio1_err;
1117
1118 ret = gpio_direction_output(audpwron, 0);
1119 if (ret)
1120 goto gpio2_err;
1121
1122 priv->codec_powered = 0;
1123 }
1124
1125 if (naudint) {
1126 /* audio interrupt */
1127 ret = request_threaded_irq(naudint, NULL,
1128 twl6040_naudint_handler,
1129 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
1130 "twl6040_codec", codec);
1131 if (ret)
1132 goto gpio2_err;
1133 } else {
1134 if (gpio_is_valid(audpwron)) {
1135 /* enable only codec ready interrupt */
1136 twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1137 ~TWL6040_READYMSK & TWL6040_ALLINT_MSK);
1138 } else {
1139 /* no interrupts at all */
1140 twl6040_write_reg_cache(codec, TWL6040_REG_INTMR,
1141 TWL6040_ALLINT_MSK);
1142 }
1143 }
1144
1145 /* init vio registers */
1146 twl6040_init_vio_regs(codec);
1147
1148 /* power on device */
1149 ret = twl6040_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1150 if (ret)
1151 goto irq_err;
1152
1153 ret = snd_soc_register_codec(codec);
1154 if (ret)
1155 goto reg_err;
1156
1157 twl6040_codec = codec;
1158
1159 ret = snd_soc_register_dai(&twl6040_dai);
1160 if (ret)
1161 goto dai_err;
1162
1163 return 0;
1164
1165dai_err:
1166 snd_soc_unregister_codec(codec);
1167 twl6040_codec = NULL;
1168reg_err:
1169 twl6040_set_bias_level(codec, SND_SOC_BIAS_OFF);
1170irq_err:
1171 if (naudint)
1172 free_irq(naudint, codec);
1173gpio2_err:
1174 if (gpio_is_valid(audpwron))
1175 gpio_free(audpwron);
1176gpio1_err:
1177 kfree(codec->reg_cache);
1178cache_err:
1179 kfree(priv);
1180 return ret;
1181}
1182
1183static int __devexit twl6040_codec_remove(struct platform_device *pdev)
1184{
1185 struct twl6040_data *priv = twl6040_codec->private_data;
1186 int audpwron = priv->audpwron;
1187 int naudint = priv->naudint;
1188
1189 if (gpio_is_valid(audpwron))
1190 gpio_free(audpwron);
1191
1192 if (naudint)
1193 free_irq(naudint, twl6040_codec);
1194
1195 snd_soc_unregister_dai(&twl6040_dai);
1196 snd_soc_unregister_codec(twl6040_codec);
1197
1198 kfree(twl6040_codec);
1199 twl6040_codec = NULL;
1200
1201 return 0;
1202}
1203
1204static struct platform_driver twl6040_codec_driver = {
1205 .driver = {
1206 .name = "twl6040_codec",
1207 .owner = THIS_MODULE,
1208 },
1209 .probe = twl6040_codec_probe,
1210 .remove = __devexit_p(twl6040_codec_remove),
1211};
1212
1213static int __init twl6040_codec_init(void)
1214{
1215 return platform_driver_register(&twl6040_codec_driver);
1216}
1217module_init(twl6040_codec_init);
1218
1219static void __exit twl6040_codec_exit(void)
1220{
1221 platform_driver_unregister(&twl6040_codec_driver);
1222}
1223module_exit(twl6040_codec_exit);
1224
1225MODULE_DESCRIPTION("ASoC TWL6040 codec driver");
1226MODULE_AUTHOR("Misael Lopez Cruz");
1227MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-28 19:39:07 -0500