xref: /freebsd/sys/arm/allwinner/a10_codec.c (revision a91a2465)
1 /*-
2  * Copyright (c) 2014-2016 Jared D. McNeill <jmcneill@invisible.ca>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
19  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
21  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
22  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 /*
28  * Allwinner A10/A20 and H3 Audio Codec
29  */
30 
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/bus.h>
34 #include <sys/rman.h>
35 #include <sys/condvar.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <sys/gpio.h>
39 
40 #include <machine/bus.h>
41 
42 #include <dev/sound/pcm/sound.h>
43 #include <dev/sound/chip.h>
44 
45 #include <dev/ofw/ofw_bus.h>
46 #include <dev/ofw/ofw_bus_subr.h>
47 
48 #include <dev/gpio/gpiobusvar.h>
49 
50 #include <dev/clk/clk.h>
51 #include <dev/hwreset/hwreset.h>
52 
53 #include "sunxi_dma_if.h"
54 #include "mixer_if.h"
55 
56 struct a10codec_info;
57 
58 struct a10codec_config {
59 	/* mixer class */
60 	struct kobj_class *mixer_class;
61 
62 	/* toggle DAC/ADC mute */
63 	void		(*mute)(struct a10codec_info *, int, int);
64 
65 	/* DRQ types */
66 	u_int		drqtype_codec;
67 	u_int		drqtype_sdram;
68 
69 	/* register map */
70 	bus_size_t	DPC,
71 			DAC_FIFOC,
72 			DAC_FIFOS,
73 			DAC_TXDATA,
74 			ADC_FIFOC,
75 			ADC_FIFOS,
76 			ADC_RXDATA,
77 			DAC_CNT,
78 			ADC_CNT;
79 };
80 
81 #define	TX_TRIG_LEVEL	0xf
82 #define	RX_TRIG_LEVEL	0x7
83 #define	DRQ_CLR_CNT	0x3
84 
85 #define	AC_DAC_DPC(_sc)		((_sc)->cfg->DPC)
86 #define	 DAC_DPC_EN_DA			0x80000000
87 #define	AC_DAC_FIFOC(_sc)	((_sc)->cfg->DAC_FIFOC)
88 #define	 DAC_FIFOC_FS_SHIFT		29
89 #define	 DAC_FIFOC_FS_MASK		(7U << DAC_FIFOC_FS_SHIFT)
90 #define	  DAC_FS_48KHZ			0
91 #define	  DAC_FS_32KHZ			1
92 #define	  DAC_FS_24KHZ			2
93 #define	  DAC_FS_16KHZ			3
94 #define	  DAC_FS_12KHZ			4
95 #define	  DAC_FS_8KHZ			5
96 #define	  DAC_FS_192KHZ			6
97 #define	  DAC_FS_96KHZ			7
98 #define	 DAC_FIFOC_FIFO_MODE_SHIFT	24
99 #define	 DAC_FIFOC_FIFO_MODE_MASK	(3U << DAC_FIFOC_FIFO_MODE_SHIFT)
100 #define	  FIFO_MODE_24_31_8		0
101 #define	  FIFO_MODE_16_31_16		0
102 #define	  FIFO_MODE_16_15_0		1
103 #define	 DAC_FIFOC_DRQ_CLR_CNT_SHIFT	21
104 #define	 DAC_FIFOC_DRQ_CLR_CNT_MASK	(3U << DAC_FIFOC_DRQ_CLR_CNT_SHIFT)
105 #define	 DAC_FIFOC_TX_TRIG_LEVEL_SHIFT	8
106 #define	 DAC_FIFOC_TX_TRIG_LEVEL_MASK	(0x7f << DAC_FIFOC_TX_TRIG_LEVEL_SHIFT)
107 #define	 DAC_FIFOC_MONO_EN		(1U << 6)
108 #define	 DAC_FIFOC_TX_BITS		(1U << 5)
109 #define	 DAC_FIFOC_DRQ_EN		(1U << 4)
110 #define	 DAC_FIFOC_FIFO_FLUSH		(1U << 0)
111 #define	AC_DAC_FIFOS(_sc)	((_sc)->cfg->DAC_FIFOS)
112 #define	AC_DAC_TXDATA(_sc)	((_sc)->cfg->DAC_TXDATA)
113 #define	AC_ADC_FIFOC(_sc)	((_sc)->cfg->ADC_FIFOC)
114 #define	 ADC_FIFOC_FS_SHIFT		29
115 #define	 ADC_FIFOC_FS_MASK		(7U << ADC_FIFOC_FS_SHIFT)
116 #define	  ADC_FS_48KHZ		0
117 #define	 ADC_FIFOC_EN_AD		(1U << 28)
118 #define	 ADC_FIFOC_RX_FIFO_MODE		(1U << 24)
119 #define	 ADC_FIFOC_RX_TRIG_LEVEL_SHIFT	8
120 #define	 ADC_FIFOC_RX_TRIG_LEVEL_MASK	(0x1f << ADC_FIFOC_RX_TRIG_LEVEL_SHIFT)
121 #define	 ADC_FIFOC_MONO_EN		(1U << 7)
122 #define	 ADC_FIFOC_RX_BITS		(1U << 6)
123 #define	 ADC_FIFOC_DRQ_EN		(1U << 4)
124 #define	 ADC_FIFOC_FIFO_FLUSH		(1U << 1)
125 #define	AC_ADC_FIFOS(_sc)	((_sc)->cfg->ADC_FIFOS)
126 #define	AC_ADC_RXDATA(_sc)	((_sc)->cfg->ADC_RXDATA)
127 #define	AC_DAC_CNT(_sc)		((_sc)->cfg->DAC_CNT)
128 #define	AC_ADC_CNT(_sc)		((_sc)->cfg->ADC_CNT)
129 
130 static uint32_t a10codec_fmt[] = {
131 	SND_FORMAT(AFMT_S16_LE, 1, 0),
132 	SND_FORMAT(AFMT_S16_LE, 2, 0),
133 	0
134 };
135 
136 static struct pcmchan_caps a10codec_pcaps = { 8000, 192000, a10codec_fmt, 0 };
137 static struct pcmchan_caps a10codec_rcaps = { 8000, 48000, a10codec_fmt, 0 };
138 
139 struct a10codec_info;
140 
141 struct a10codec_chinfo {
142 	struct snd_dbuf		*buffer;
143 	struct pcm_channel	*channel;
144 	struct a10codec_info	*parent;
145 	bus_dmamap_t		dmamap;
146 	void			*dmaaddr;
147 	bus_addr_t		physaddr;
148 	bus_size_t		fifo;
149 	device_t		dmac;
150 	void			*dmachan;
151 
152 	int			dir;
153 	int			run;
154 	uint32_t		pos;
155 	uint32_t		format;
156 	uint32_t		blocksize;
157 	uint32_t		speed;
158 };
159 
160 struct a10codec_info {
161 	device_t		dev;
162 	struct resource		*res[2];
163 	struct mtx		*lock;
164 	bus_dma_tag_t		dmat;
165 	unsigned		dmasize;
166 	void			*ih;
167 
168 	struct a10codec_config	*cfg;
169 
170 	struct a10codec_chinfo	play;
171 	struct a10codec_chinfo	rec;
172 };
173 
174 static struct resource_spec a10codec_spec[] = {
175 	{ SYS_RES_MEMORY,	0,	RF_ACTIVE },
176 	{ -1, 0 }
177 };
178 
179 #define	CODEC_ANALOG_READ(sc, reg)		bus_read_4((sc)->res[1], (reg))
180 #define	CODEC_ANALOG_WRITE(sc, reg, val)	bus_write_4((sc)->res[1], (reg), (val))
181 
182 #define	CODEC_READ(sc, reg)		bus_read_4((sc)->res[0], (reg))
183 #define	CODEC_WRITE(sc, reg, val)	bus_write_4((sc)->res[0], (reg), (val))
184 
185 /*
186  * A10/A20 mixer interface
187  */
188 
189 #define	A10_DAC_ACTL	0x10
190 #define	 A10_DACAREN			(1U << 31)
191 #define	 A10_DACALEN			(1U << 30)
192 #define	 A10_MIXEN			(1U << 29)
193 #define	 A10_DACPAS			(1U << 8)
194 #define	 A10_PAMUTE			(1U << 6)
195 #define	 A10_PAVOL_SHIFT		0
196 #define	 A10_PAVOL_MASK			(0x3f << A10_PAVOL_SHIFT)
197 #define	A10_ADC_ACTL	0x28
198 #define	 A10_ADCREN			(1U << 31)
199 #define	 A10_ADCLEN			(1U << 30)
200 #define	 A10_PREG1EN			(1U << 29)
201 #define	 A10_PREG2EN			(1U << 28)
202 #define	 A10_VMICEN			(1U << 27)
203 #define	 A10_ADCG_SHIFT			20
204 #define	 A10_ADCG_MASK			(7U << A10_ADCG_SHIFT)
205 #define	 A10_ADCIS_SHIFT		17
206 #define	 A10_ADCIS_MASK			(7U << A10_ADCIS_SHIFT)
207 #define	  A10_ADC_IS_LINEIN			0
208 #define	  A10_ADC_IS_FMIN			1
209 #define	  A10_ADC_IS_MIC1			2
210 #define	  A10_ADC_IS_MIC2			3
211 #define	  A10_ADC_IS_MIC1_L_MIC2_R		4
212 #define	  A10_ADC_IS_MIC1_LR_MIC2_LR		5
213 #define	  A10_ADC_IS_OMIX			6
214 #define	  A10_ADC_IS_LINEIN_L_MIC1_R		7
215 #define	 A10_LNRDF			(1U << 16)
216 #define	 A10_LNPREG_SHIFT		13
217 #define	 A10_LNPREG_MASK		(7U << A10_LNPREG_SHIFT)
218 #define	 A10_PA_EN			(1U << 4)
219 #define	 A10_DDE			(1U << 3)
220 
221 static int
222 a10_mixer_init(struct snd_mixer *m)
223 {
224 	struct a10codec_info *sc = mix_getdevinfo(m);
225 	uint32_t val;
226 
227 	mix_setdevs(m, SOUND_MASK_VOLUME | SOUND_MASK_LINE | SOUND_MASK_RECLEV);
228 	mix_setrecdevs(m, SOUND_MASK_LINE | SOUND_MASK_LINE1 | SOUND_MASK_MIC);
229 
230 	/* Unmute input source to PA */
231 	val = CODEC_READ(sc, A10_DAC_ACTL);
232 	val |= A10_PAMUTE;
233 	CODEC_WRITE(sc, A10_DAC_ACTL, val);
234 
235 	/* Enable PA */
236 	val = CODEC_READ(sc, A10_ADC_ACTL);
237 	val |= A10_PA_EN;
238 	CODEC_WRITE(sc, A10_ADC_ACTL, val);
239 
240 	return (0);
241 }
242 
243 static const struct a10_mixer {
244 	unsigned reg;
245 	unsigned mask;
246 	unsigned shift;
247 } a10_mixers[SOUND_MIXER_NRDEVICES] = {
248 	[SOUND_MIXER_VOLUME]	= { A10_DAC_ACTL, A10_PAVOL_MASK,
249 				    A10_PAVOL_SHIFT },
250 	[SOUND_MIXER_LINE]	= { A10_ADC_ACTL, A10_LNPREG_MASK,
251 				    A10_LNPREG_SHIFT },
252 	[SOUND_MIXER_RECLEV]	= { A10_ADC_ACTL, A10_ADCG_MASK,
253 				    A10_ADCG_SHIFT },
254 };
255 
256 static int
257 a10_mixer_set(struct snd_mixer *m, unsigned dev, unsigned left,
258     unsigned right)
259 {
260 	struct a10codec_info *sc = mix_getdevinfo(m);
261 	uint32_t val;
262 	unsigned nvol, max;
263 
264 	max = a10_mixers[dev].mask >> a10_mixers[dev].shift;
265 	nvol = (left * max) / 100;
266 
267 	val = CODEC_READ(sc, a10_mixers[dev].reg);
268 	val &= ~a10_mixers[dev].mask;
269 	val |= (nvol << a10_mixers[dev].shift);
270 	CODEC_WRITE(sc, a10_mixers[dev].reg, val);
271 
272 	left = right = (left * 100) / max;
273 	return (left | (right << 8));
274 }
275 
276 static uint32_t
277 a10_mixer_setrecsrc(struct snd_mixer *m, uint32_t src)
278 {
279 	struct a10codec_info *sc = mix_getdevinfo(m);
280 	uint32_t val;
281 
282 	val = CODEC_READ(sc, A10_ADC_ACTL);
283 
284 	switch (src) {
285 	case SOUND_MASK_LINE:	/* line-in */
286 		val &= ~A10_ADCIS_MASK;
287 		val |= (A10_ADC_IS_LINEIN << A10_ADCIS_SHIFT);
288 		break;
289 	case SOUND_MASK_MIC:	/* MIC1 */
290 		val &= ~A10_ADCIS_MASK;
291 		val |= (A10_ADC_IS_MIC1 << A10_ADCIS_SHIFT);
292 		break;
293 	case SOUND_MASK_LINE1:	/* MIC2 */
294 		val &= ~A10_ADCIS_MASK;
295 		val |= (A10_ADC_IS_MIC2 << A10_ADCIS_SHIFT);
296 		break;
297 	default:
298 		break;
299 	}
300 
301 	CODEC_WRITE(sc, A10_ADC_ACTL, val);
302 
303 	switch ((val & A10_ADCIS_MASK) >> A10_ADCIS_SHIFT) {
304 	case A10_ADC_IS_LINEIN:
305 		return (SOUND_MASK_LINE);
306 	case A10_ADC_IS_MIC1:
307 		return (SOUND_MASK_MIC);
308 	case A10_ADC_IS_MIC2:
309 		return (SOUND_MASK_LINE1);
310 	default:
311 		return (0);
312 	}
313 }
314 
315 static void
316 a10_mute(struct a10codec_info *sc, int mute, int dir)
317 {
318 	uint32_t val;
319 
320 	if (dir == PCMDIR_PLAY) {
321 		val = CODEC_READ(sc, A10_DAC_ACTL);
322 		if (mute) {
323 			/* Disable DAC analog l/r channels and output mixer */
324 			val &= ~A10_DACAREN;
325 			val &= ~A10_DACALEN;
326 			val &= ~A10_DACPAS;
327 		} else {
328 			/* Enable DAC analog l/r channels and output mixer */
329 			val |= A10_DACAREN;
330 			val |= A10_DACALEN;
331 			val |= A10_DACPAS;
332 		}
333 		CODEC_WRITE(sc, A10_DAC_ACTL, val);
334 	} else {
335 		val = CODEC_READ(sc, A10_ADC_ACTL);
336 		if (mute) {
337 			/* Disable ADC analog l/r channels, MIC1 preamp,
338 			 * and VMIC pin voltage
339 			 */
340 			val &= ~A10_ADCREN;
341 			val &= ~A10_ADCLEN;
342 			val &= ~A10_PREG1EN;
343 			val &= ~A10_VMICEN;
344 		} else {
345 			/* Enable ADC analog l/r channels, MIC1 preamp,
346 			 * and VMIC pin voltage
347 			 */
348 			val |= A10_ADCREN;
349 			val |= A10_ADCLEN;
350 			val |= A10_PREG1EN;
351 			val |= A10_VMICEN;
352 		}
353 		CODEC_WRITE(sc, A10_ADC_ACTL, val);
354 	}
355 }
356 
357 static kobj_method_t a10_mixer_methods[] = {
358 	KOBJMETHOD(mixer_init,		a10_mixer_init),
359 	KOBJMETHOD(mixer_set,		a10_mixer_set),
360 	KOBJMETHOD(mixer_setrecsrc,	a10_mixer_setrecsrc),
361 	KOBJMETHOD_END
362 };
363 MIXER_DECLARE(a10_mixer);
364 
365 /*
366  * H3 mixer interface
367  */
368 
369 #define	H3_PR_CFG		0x00
370 #define	 H3_AC_PR_RST		(1 << 28)
371 #define	 H3_AC_PR_RW		(1 << 24)
372 #define	 H3_AC_PR_ADDR_SHIFT	16
373 #define	 H3_AC_PR_ADDR_MASK	(0x1f << H3_AC_PR_ADDR_SHIFT)
374 #define	 H3_ACDA_PR_WDAT_SHIFT	8
375 #define	 H3_ACDA_PR_WDAT_MASK	(0xff << H3_ACDA_PR_WDAT_SHIFT)
376 #define	 H3_ACDA_PR_RDAT_SHIFT	0
377 #define	 H3_ACDA_PR_RDAT_MASK	(0xff << H3_ACDA_PR_RDAT_SHIFT)
378 
379 #define	H3_LOMIXSC		0x01
380 #define	 H3_LOMIXSC_LDAC	(1 << 1)
381 #define	H3_ROMIXSC		0x02
382 #define	 H3_ROMIXSC_RDAC	(1 << 1)
383 #define	H3_DAC_PA_SRC		0x03
384 #define	 H3_DACAREN		(1 << 7)
385 #define	 H3_DACALEN		(1 << 6)
386 #define	 H3_RMIXEN		(1 << 5)
387 #define	 H3_LMIXEN		(1 << 4)
388 #define	H3_LINEIN_GCTR		0x05
389 #define	 H3_LINEING_SHIFT	4
390 #define	 H3_LINEING_MASK	(0x7 << H3_LINEING_SHIFT)
391 #define	H3_MIC_GCTR		0x06
392 #define	 H3_MIC1_GAIN_SHIFT	4
393 #define	 H3_MIC1_GAIN_MASK	(0x7 << H3_MIC1_GAIN_SHIFT)
394 #define	 H3_MIC2_GAIN_SHIFT	0
395 #define	 H3_MIC2_GAIN_MASK	(0x7 << H3_MIC2_GAIN_SHIFT)
396 #define	H3_PAEN_CTR		0x07
397 #define	 H3_LINEOUTEN		(1 << 7)
398 #define	H3_LINEOUT_VOLC		0x09
399 #define	 H3_LINEOUTVOL_SHIFT	3
400 #define	 H3_LINEOUTVOL_MASK	(0x1f << H3_LINEOUTVOL_SHIFT)
401 #define	H3_MIC2G_LINEOUT_CTR	0x0a
402 #define	 H3_LINEOUT_LSEL	(1 << 3)
403 #define	 H3_LINEOUT_RSEL	(1 << 2)
404 #define	H3_LADCMIXSC		0x0c
405 #define	H3_RADCMIXSC		0x0d
406 #define	 H3_ADCMIXSC_MIC1	(1 << 6)
407 #define	 H3_ADCMIXSC_MIC2	(1 << 5)
408 #define	 H3_ADCMIXSC_LINEIN	(1 << 2)
409 #define	 H3_ADCMIXSC_OMIXER	(3 << 0)
410 #define	H3_ADC_AP_EN		0x0f
411 #define	 H3_ADCREN		(1 << 7)
412 #define	 H3_ADCLEN		(1 << 6)
413 #define	 H3_ADCG_SHIFT		0
414 #define	 H3_ADCG_MASK		(0x7 << H3_ADCG_SHIFT)
415 
416 static u_int
417 h3_pr_read(struct a10codec_info *sc, u_int addr)
418 {
419 	uint32_t val;
420 
421 	/* Read current value */
422 	val = CODEC_ANALOG_READ(sc, H3_PR_CFG);
423 
424 	/* De-assert reset */
425 	val |= H3_AC_PR_RST;
426 	CODEC_ANALOG_WRITE(sc, H3_PR_CFG, val);
427 
428 	/* Read mode */
429 	val &= ~H3_AC_PR_RW;
430 	CODEC_ANALOG_WRITE(sc, H3_PR_CFG, val);
431 
432 	/* Set address */
433 	val &= ~H3_AC_PR_ADDR_MASK;
434 	val |= (addr << H3_AC_PR_ADDR_SHIFT);
435 	CODEC_ANALOG_WRITE(sc, H3_PR_CFG, val);
436 
437 	/* Read data */
438 	return (CODEC_ANALOG_READ(sc , H3_PR_CFG) & H3_ACDA_PR_RDAT_MASK);
439 }
440 
441 static void
442 h3_pr_write(struct a10codec_info *sc, u_int addr, u_int data)
443 {
444 	uint32_t val;
445 
446 	/* Read current value */
447 	val = CODEC_ANALOG_READ(sc, H3_PR_CFG);
448 
449 	/* De-assert reset */
450 	val |= H3_AC_PR_RST;
451 	CODEC_ANALOG_WRITE(sc, H3_PR_CFG, val);
452 
453 	/* Set address */
454 	val &= ~H3_AC_PR_ADDR_MASK;
455 	val |= (addr << H3_AC_PR_ADDR_SHIFT);
456 	CODEC_ANALOG_WRITE(sc, H3_PR_CFG, val);
457 
458 	/* Write data */
459 	val &= ~H3_ACDA_PR_WDAT_MASK;
460 	val |= (data << H3_ACDA_PR_WDAT_SHIFT);
461 	CODEC_ANALOG_WRITE(sc, H3_PR_CFG, val);
462 
463 	/* Write mode */
464 	val |= H3_AC_PR_RW;
465 	CODEC_ANALOG_WRITE(sc, H3_PR_CFG, val);
466 }
467 
468 static void
469 h3_pr_set_clear(struct a10codec_info *sc, u_int addr, u_int set, u_int clr)
470 {
471 	u_int old, new;
472 
473 	old = h3_pr_read(sc, addr);
474 	new = set | (old & ~clr);
475 	h3_pr_write(sc, addr, new);
476 }
477 
478 static int
479 h3_mixer_init(struct snd_mixer *m)
480 {
481 	int rid=1;
482 	pcell_t reg[2];
483 	phandle_t analogref;
484 	struct a10codec_info *sc = mix_getdevinfo(m);
485 
486 	if (OF_getencprop(ofw_bus_get_node(sc->dev), "allwinner,codec-analog-controls",
487 	    &analogref, sizeof(analogref)) <= 0) {
488 		return (ENXIO);
489 	}
490 
491 	if (OF_getencprop(OF_node_from_xref(analogref), "reg",
492 	    reg, sizeof(reg)) <= 0) {
493 		return (ENXIO);
494 	}
495 
496 	sc->res[1] = bus_alloc_resource(sc->dev, SYS_RES_MEMORY, &rid, reg[0],
497 	    reg[0]+reg[1], reg[1], RF_ACTIVE );
498 
499 	if (sc->res[1] == NULL) {
500 		return (ENXIO);
501 	}
502 
503 	mix_setdevs(m, SOUND_MASK_PCM | SOUND_MASK_VOLUME | SOUND_MASK_RECLEV |
504 	    SOUND_MASK_MIC | SOUND_MASK_LINE | SOUND_MASK_LINE1);
505 	mix_setrecdevs(m, SOUND_MASK_MIC | SOUND_MASK_LINE | SOUND_MASK_LINE1 |
506 	    SOUND_MASK_IMIX);
507 
508 	pcm_setflags(sc->dev, pcm_getflags(sc->dev) | SD_F_SOFTPCMVOL);
509 
510 	/* Right & Left LINEOUT enable */
511 	h3_pr_set_clear(sc, H3_PAEN_CTR, H3_LINEOUTEN, 0);
512 	h3_pr_set_clear(sc, H3_MIC2G_LINEOUT_CTR,
513 	    H3_LINEOUT_LSEL | H3_LINEOUT_RSEL, 0);
514 
515 	return (0);
516 }
517 
518 static const struct h3_mixer {
519 	unsigned reg;
520 	unsigned mask;
521 	unsigned shift;
522 } h3_mixers[SOUND_MIXER_NRDEVICES] = {
523 	[SOUND_MIXER_VOLUME]	= { H3_LINEOUT_VOLC, H3_LINEOUTVOL_MASK,
524 				    H3_LINEOUTVOL_SHIFT },
525 	[SOUND_MIXER_RECLEV]	= { H3_ADC_AP_EN, H3_ADCG_MASK,
526 				    H3_ADCG_SHIFT },
527 	[SOUND_MIXER_LINE]	= { H3_LINEIN_GCTR, H3_LINEING_MASK,
528 				    H3_LINEING_SHIFT },
529 	[SOUND_MIXER_MIC]	= { H3_MIC_GCTR, H3_MIC1_GAIN_MASK,
530 				    H3_MIC1_GAIN_SHIFT },
531 	[SOUND_MIXER_LINE1]	= { H3_MIC_GCTR, H3_MIC2_GAIN_MASK,
532 				    H3_MIC2_GAIN_SHIFT },
533 };
534 
535 static int
536 h3_mixer_set(struct snd_mixer *m, unsigned dev, unsigned left,
537     unsigned right)
538 {
539 	struct a10codec_info *sc = mix_getdevinfo(m);
540 	unsigned nvol, max;
541 
542 	max = h3_mixers[dev].mask >> h3_mixers[dev].shift;
543 	nvol = (left * max) / 100;
544 
545 	h3_pr_set_clear(sc, h3_mixers[dev].reg,
546 	    nvol << h3_mixers[dev].shift, h3_mixers[dev].mask);
547 
548 	left = right = (left * 100) / max;
549 	return (left | (right << 8));
550 }
551 
552 static uint32_t
553 h3_mixer_setrecsrc(struct snd_mixer *m, uint32_t src)
554 {
555 	struct a10codec_info *sc = mix_getdevinfo(m);
556 	uint32_t val;
557 
558 	val = 0;
559 	src &= (SOUND_MASK_LINE | SOUND_MASK_MIC |
560 	    SOUND_MASK_LINE1 | SOUND_MASK_IMIX);
561 
562 	if ((src & SOUND_MASK_LINE) != 0)	/* line-in */
563 		val |= H3_ADCMIXSC_LINEIN;
564 	if ((src & SOUND_MASK_MIC) != 0)	/* MIC1 */
565 		val |= H3_ADCMIXSC_MIC1;
566 	if ((src & SOUND_MASK_LINE1) != 0)	/* MIC2 */
567 		val |= H3_ADCMIXSC_MIC2;
568 	if ((src & SOUND_MASK_IMIX) != 0)	/* l/r output mixer */
569 		val |= H3_ADCMIXSC_OMIXER;
570 
571 	h3_pr_write(sc, H3_LADCMIXSC, val);
572 	h3_pr_write(sc, H3_RADCMIXSC, val);
573 
574 	return (src);
575 }
576 
577 static void
578 h3_mute(struct a10codec_info *sc, int mute, int dir)
579 {
580 	if (dir == PCMDIR_PLAY) {
581 		if (mute) {
582 			/* Mute DAC l/r channels to output mixer */
583 			h3_pr_set_clear(sc, H3_LOMIXSC, 0, H3_LOMIXSC_LDAC);
584 			h3_pr_set_clear(sc, H3_ROMIXSC, 0, H3_ROMIXSC_RDAC);
585 			/* Disable DAC analog l/r channels and output mixer */
586 			h3_pr_set_clear(sc, H3_DAC_PA_SRC,
587 			    0, H3_DACAREN | H3_DACALEN | H3_RMIXEN | H3_LMIXEN);
588 		} else {
589 			/* Enable DAC analog l/r channels and output mixer */
590 			h3_pr_set_clear(sc, H3_DAC_PA_SRC,
591 			    H3_DACAREN | H3_DACALEN | H3_RMIXEN | H3_LMIXEN, 0);
592 			/* Unmute DAC l/r channels to output mixer */
593 			h3_pr_set_clear(sc, H3_LOMIXSC, H3_LOMIXSC_LDAC, 0);
594 			h3_pr_set_clear(sc, H3_ROMIXSC, H3_ROMIXSC_RDAC, 0);
595 		}
596 	} else {
597 		if (mute) {
598 			/* Disable ADC analog l/r channels */
599 			h3_pr_set_clear(sc, H3_ADC_AP_EN,
600 			    0, H3_ADCREN | H3_ADCLEN);
601 		} else {
602 			/* Enable ADC analog l/r channels */
603 			h3_pr_set_clear(sc, H3_ADC_AP_EN,
604 			    H3_ADCREN | H3_ADCLEN, 0);
605 		}
606 	}
607 }
608 
609 static kobj_method_t h3_mixer_methods[] = {
610 	KOBJMETHOD(mixer_init,		h3_mixer_init),
611 	KOBJMETHOD(mixer_set,		h3_mixer_set),
612 	KOBJMETHOD(mixer_setrecsrc,	h3_mixer_setrecsrc),
613 	KOBJMETHOD_END
614 };
615 MIXER_DECLARE(h3_mixer);
616 
617 /*
618  * Channel interface
619  */
620 
621 static void
622 a10codec_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
623 {
624 	struct a10codec_chinfo *ch = arg;
625 
626 	if (error != 0)
627 		return;
628 
629 	ch->physaddr = segs[0].ds_addr;
630 }
631 
632 static void
633 a10codec_transfer(struct a10codec_chinfo *ch)
634 {
635 	bus_addr_t src, dst;
636 	int error;
637 
638 	if (ch->dir == PCMDIR_PLAY) {
639 		src = ch->physaddr + ch->pos;
640 		dst = ch->fifo;
641 	} else {
642 		src = ch->fifo;
643 		dst = ch->physaddr + ch->pos;
644 	}
645 
646 	error = SUNXI_DMA_TRANSFER(ch->dmac, ch->dmachan, src, dst,
647 	    ch->blocksize);
648 	if (error) {
649 		ch->run = 0;
650 		device_printf(ch->parent->dev, "DMA transfer failed: %d\n",
651 		    error);
652 	}
653 }
654 
655 static void
656 a10codec_dmaconfig(struct a10codec_chinfo *ch)
657 {
658 	struct a10codec_info *sc = ch->parent;
659 	struct sunxi_dma_config conf;
660 
661 	memset(&conf, 0, sizeof(conf));
662 	conf.src_width = conf.dst_width = 16;
663 	conf.src_burst_len = conf.dst_burst_len = 4;
664 
665 	if (ch->dir == PCMDIR_PLAY) {
666 		conf.dst_noincr = true;
667 		conf.src_drqtype = sc->cfg->drqtype_sdram;
668 		conf.dst_drqtype = sc->cfg->drqtype_codec;
669 	} else {
670 		conf.src_noincr = true;
671 		conf.src_drqtype = sc->cfg->drqtype_codec;
672 		conf.dst_drqtype = sc->cfg->drqtype_sdram;
673 	}
674 
675 	SUNXI_DMA_SET_CONFIG(ch->dmac, ch->dmachan, &conf);
676 }
677 
678 static void
679 a10codec_dmaintr(void *priv)
680 {
681 	struct a10codec_chinfo *ch = priv;
682 	unsigned bufsize;
683 
684 	bufsize = sndbuf_getsize(ch->buffer);
685 
686 	ch->pos += ch->blocksize;
687 	if (ch->pos >= bufsize)
688 		ch->pos -= bufsize;
689 
690 	if (ch->run) {
691 		chn_intr(ch->channel);
692 		a10codec_transfer(ch);
693 	}
694 }
695 
696 static unsigned
697 a10codec_fs(struct a10codec_chinfo *ch)
698 {
699 	switch (ch->speed) {
700 	case 48000:
701 		return (DAC_FS_48KHZ);
702 	case 24000:
703 		return (DAC_FS_24KHZ);
704 	case 12000:
705 		return (DAC_FS_12KHZ);
706 	case 192000:
707 		return (DAC_FS_192KHZ);
708 	case 32000:
709 		return (DAC_FS_32KHZ);
710 	case 16000:
711 		return (DAC_FS_16KHZ);
712 	case 8000:
713 		return (DAC_FS_8KHZ);
714 	case 96000:
715 		return (DAC_FS_96KHZ);
716 	default:
717 		return (DAC_FS_48KHZ);
718 	}
719 }
720 
721 static void
722 a10codec_start(struct a10codec_chinfo *ch)
723 {
724 	struct a10codec_info *sc = ch->parent;
725 	uint32_t val;
726 
727 	ch->pos = 0;
728 
729 	if (ch->dir == PCMDIR_PLAY) {
730 		/* Flush DAC FIFO */
731 		CODEC_WRITE(sc, AC_DAC_FIFOC(sc), DAC_FIFOC_FIFO_FLUSH);
732 
733 		/* Clear DAC FIFO status */
734 		CODEC_WRITE(sc, AC_DAC_FIFOS(sc),
735 		    CODEC_READ(sc, AC_DAC_FIFOS(sc)));
736 
737 		/* Unmute output */
738 		sc->cfg->mute(sc, 0, ch->dir);
739 
740 		/* Configure DAC DMA channel */
741 		a10codec_dmaconfig(ch);
742 
743 		/* Configure DAC FIFO */
744 		CODEC_WRITE(sc, AC_DAC_FIFOC(sc),
745 		    (AFMT_CHANNEL(ch->format) == 1 ? DAC_FIFOC_MONO_EN : 0) |
746 		    (a10codec_fs(ch) << DAC_FIFOC_FS_SHIFT) |
747 		    (FIFO_MODE_16_15_0 << DAC_FIFOC_FIFO_MODE_SHIFT) |
748 		    (DRQ_CLR_CNT << DAC_FIFOC_DRQ_CLR_CNT_SHIFT) |
749 		    (TX_TRIG_LEVEL << DAC_FIFOC_TX_TRIG_LEVEL_SHIFT));
750 
751 		/* Enable DAC DRQ */
752 		val = CODEC_READ(sc, AC_DAC_FIFOC(sc));
753 		val |= DAC_FIFOC_DRQ_EN;
754 		CODEC_WRITE(sc, AC_DAC_FIFOC(sc), val);
755 	} else {
756 		/* Flush ADC FIFO */
757 		CODEC_WRITE(sc, AC_ADC_FIFOC(sc), ADC_FIFOC_FIFO_FLUSH);
758 
759 		/* Clear ADC FIFO status */
760 		CODEC_WRITE(sc, AC_ADC_FIFOS(sc),
761 		    CODEC_READ(sc, AC_ADC_FIFOS(sc)));
762 
763 		/* Unmute input */
764 		sc->cfg->mute(sc, 0, ch->dir);
765 
766 		/* Configure ADC DMA channel */
767 		a10codec_dmaconfig(ch);
768 
769 		/* Configure ADC FIFO */
770 		CODEC_WRITE(sc, AC_ADC_FIFOC(sc),
771 		    ADC_FIFOC_EN_AD |
772 		    ADC_FIFOC_RX_FIFO_MODE |
773 		    (AFMT_CHANNEL(ch->format) == 1 ? ADC_FIFOC_MONO_EN : 0) |
774 		    (a10codec_fs(ch) << ADC_FIFOC_FS_SHIFT) |
775 		    (RX_TRIG_LEVEL << ADC_FIFOC_RX_TRIG_LEVEL_SHIFT));
776 
777 		/* Enable ADC DRQ */
778 		val = CODEC_READ(sc, AC_ADC_FIFOC(sc));
779 		val |= ADC_FIFOC_DRQ_EN;
780 		CODEC_WRITE(sc, AC_ADC_FIFOC(sc), val);
781 	}
782 
783 	/* Start DMA transfer */
784 	a10codec_transfer(ch);
785 }
786 
787 static void
788 a10codec_stop(struct a10codec_chinfo *ch)
789 {
790 	struct a10codec_info *sc = ch->parent;
791 
792 	/* Disable DMA channel */
793 	SUNXI_DMA_HALT(ch->dmac, ch->dmachan);
794 
795 	sc->cfg->mute(sc, 1, ch->dir);
796 
797 	if (ch->dir == PCMDIR_PLAY) {
798 		/* Disable DAC DRQ */
799 		CODEC_WRITE(sc, AC_DAC_FIFOC(sc), 0);
800 	} else {
801 		/* Disable ADC DRQ */
802 		CODEC_WRITE(sc, AC_ADC_FIFOC(sc), 0);
803 	}
804 }
805 
806 static void *
807 a10codec_chan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b,
808     struct pcm_channel *c, int dir)
809 {
810 	struct a10codec_info *sc = devinfo;
811 	struct a10codec_chinfo *ch = dir == PCMDIR_PLAY ? &sc->play : &sc->rec;
812 	phandle_t xref;
813 	pcell_t *cells;
814 	int ncells, error;
815 
816 	error = ofw_bus_parse_xref_list_alloc(ofw_bus_get_node(sc->dev),
817 	    "dmas", "#dma-cells", dir == PCMDIR_PLAY ? 1 : 0,
818 	    &xref, &ncells, &cells);
819 	if (error != 0) {
820 		device_printf(sc->dev, "cannot parse 'dmas' property\n");
821 		return (NULL);
822 	}
823 	OF_prop_free(cells);
824 
825 	ch->parent = sc;
826 	ch->channel = c;
827 	ch->buffer = b;
828 	ch->dir = dir;
829 	ch->fifo = rman_get_start(sc->res[0]) +
830 	    (dir == PCMDIR_REC ? AC_ADC_RXDATA(sc) : AC_DAC_TXDATA(sc));
831 
832 	ch->dmac = OF_device_from_xref(xref);
833 	if (ch->dmac == NULL) {
834 		device_printf(sc->dev, "cannot find DMA controller\n");
835 		device_printf(sc->dev, "xref = 0x%x\n", (u_int)xref);
836 		return (NULL);
837 	}
838 	ch->dmachan = SUNXI_DMA_ALLOC(ch->dmac, false, a10codec_dmaintr, ch);
839 	if (ch->dmachan == NULL) {
840 		device_printf(sc->dev, "cannot allocate DMA channel\n");
841 		return (NULL);
842 	}
843 
844 	error = bus_dmamem_alloc(sc->dmat, &ch->dmaaddr,
845 	    BUS_DMA_NOWAIT | BUS_DMA_COHERENT, &ch->dmamap);
846 	if (error != 0) {
847 		device_printf(sc->dev, "cannot allocate channel buffer\n");
848 		return (NULL);
849 	}
850 	error = bus_dmamap_load(sc->dmat, ch->dmamap, ch->dmaaddr,
851 	    sc->dmasize, a10codec_dmamap_cb, ch, BUS_DMA_NOWAIT);
852 	if (error != 0) {
853 		device_printf(sc->dev, "cannot load DMA map\n");
854 		return (NULL);
855 	}
856 	memset(ch->dmaaddr, 0, sc->dmasize);
857 
858 	if (sndbuf_setup(ch->buffer, ch->dmaaddr, sc->dmasize) != 0) {
859 		device_printf(sc->dev, "cannot setup sndbuf\n");
860 		return (NULL);
861 	}
862 
863 	return (ch);
864 }
865 
866 static int
867 a10codec_chan_free(kobj_t obj, void *data)
868 {
869 	struct a10codec_chinfo *ch = data;
870 	struct a10codec_info *sc = ch->parent;
871 
872 	SUNXI_DMA_FREE(ch->dmac, ch->dmachan);
873 	bus_dmamap_unload(sc->dmat, ch->dmamap);
874 	bus_dmamem_free(sc->dmat, ch->dmaaddr, ch->dmamap);
875 
876 	return (0);
877 }
878 
879 static int
880 a10codec_chan_setformat(kobj_t obj, void *data, uint32_t format)
881 {
882 	struct a10codec_chinfo *ch = data;
883 
884 	ch->format = format;
885 
886 	return (0);
887 }
888 
889 static uint32_t
890 a10codec_chan_setspeed(kobj_t obj, void *data, uint32_t speed)
891 {
892 	struct a10codec_chinfo *ch = data;
893 
894 	/*
895 	 * The codec supports full duplex operation but both DAC and ADC
896 	 * use the same source clock (PLL2). Limit the available speeds to
897 	 * those supported by a 24576000 Hz input.
898 	 */
899 	switch (speed) {
900 	case 8000:
901 	case 12000:
902 	case 16000:
903 	case 24000:
904 	case 32000:
905 	case 48000:
906 		ch->speed = speed;
907 		break;
908 	case 96000:
909 	case 192000:
910 		/* 96 KHz / 192 KHz mode only supported for playback */
911 		if (ch->dir == PCMDIR_PLAY) {
912 			ch->speed = speed;
913 		} else {
914 			ch->speed = 48000;
915 		}
916 		break;
917 	case 44100:
918 		ch->speed = 48000;
919 		break;
920 	case 22050:
921 		ch->speed = 24000;
922 		break;
923 	case 11025:
924 		ch->speed = 12000;
925 		break;
926 	default:
927 		ch->speed = 48000;
928 		break;
929 	}
930 
931 	return (ch->speed);
932 }
933 
934 static uint32_t
935 a10codec_chan_setblocksize(kobj_t obj, void *data, uint32_t blocksize)
936 {
937 	struct a10codec_chinfo *ch = data;
938 
939 	ch->blocksize = blocksize & ~3;
940 
941 	return (ch->blocksize);
942 }
943 
944 static int
945 a10codec_chan_trigger(kobj_t obj, void *data, int go)
946 {
947 	struct a10codec_chinfo *ch = data;
948 	struct a10codec_info *sc = ch->parent;
949 
950 	if (!PCMTRIG_COMMON(go))
951 		return (0);
952 
953 	snd_mtxlock(sc->lock);
954 	switch (go) {
955 	case PCMTRIG_START:
956 		ch->run = 1;
957 		a10codec_stop(ch);
958 		a10codec_start(ch);
959 		break;
960 	case PCMTRIG_STOP:
961 	case PCMTRIG_ABORT:
962 		ch->run = 0;
963 		a10codec_stop(ch);
964 		break;
965 	default:
966 		break;
967 	}
968 	snd_mtxunlock(sc->lock);
969 
970 	return (0);
971 }
972 
973 static uint32_t
974 a10codec_chan_getptr(kobj_t obj, void *data)
975 {
976 	struct a10codec_chinfo *ch = data;
977 
978 	return (ch->pos);
979 }
980 
981 static struct pcmchan_caps *
982 a10codec_chan_getcaps(kobj_t obj, void *data)
983 {
984 	struct a10codec_chinfo *ch = data;
985 
986 	if (ch->dir == PCMDIR_PLAY) {
987 		return (&a10codec_pcaps);
988 	} else {
989 		return (&a10codec_rcaps);
990 	}
991 }
992 
993 static kobj_method_t a10codec_chan_methods[] = {
994 	KOBJMETHOD(channel_init,		a10codec_chan_init),
995 	KOBJMETHOD(channel_free,		a10codec_chan_free),
996 	KOBJMETHOD(channel_setformat,		a10codec_chan_setformat),
997 	KOBJMETHOD(channel_setspeed,		a10codec_chan_setspeed),
998 	KOBJMETHOD(channel_setblocksize,	a10codec_chan_setblocksize),
999 	KOBJMETHOD(channel_trigger,		a10codec_chan_trigger),
1000 	KOBJMETHOD(channel_getptr,		a10codec_chan_getptr),
1001 	KOBJMETHOD(channel_getcaps,		a10codec_chan_getcaps),
1002 	KOBJMETHOD_END
1003 };
1004 CHANNEL_DECLARE(a10codec_chan);
1005 
1006 /*
1007  * Device interface
1008  */
1009 
1010 static const struct a10codec_config a10_config = {
1011 	.mixer_class	= &a10_mixer_class,
1012 	.mute		= a10_mute,
1013 	.drqtype_codec	= 19,
1014 	.drqtype_sdram	= 22,
1015 	.DPC		= 0x00,
1016 	.DAC_FIFOC	= 0x04,
1017 	.DAC_FIFOS	= 0x08,
1018 	.DAC_TXDATA	= 0x0c,
1019 	.ADC_FIFOC	= 0x1c,
1020 	.ADC_FIFOS	= 0x20,
1021 	.ADC_RXDATA	= 0x24,
1022 	.DAC_CNT	= 0x30,
1023 	.ADC_CNT	= 0x34,
1024 };
1025 
1026 static const struct a10codec_config h3_config = {
1027 	.mixer_class	= &h3_mixer_class,
1028 	.mute		= h3_mute,
1029 	.drqtype_codec	= 15,
1030 	.drqtype_sdram	= 1,
1031 	.DPC		= 0x00,
1032 	.DAC_FIFOC	= 0x04,
1033 	.DAC_FIFOS	= 0x08,
1034 	.DAC_TXDATA	= 0x20,
1035 	.ADC_FIFOC	= 0x10,
1036 	.ADC_FIFOS	= 0x14,
1037 	.ADC_RXDATA	= 0x18,
1038 	.DAC_CNT	= 0x40,
1039 	.ADC_CNT	= 0x44,
1040 };
1041 
1042 static struct ofw_compat_data compat_data[] = {
1043 	{ "allwinner,sun4i-a10-codec",	(uintptr_t)&a10_config },
1044 	{ "allwinner,sun7i-a20-codec",	(uintptr_t)&a10_config },
1045 	{ "allwinner,sun8i-h3-codec",	(uintptr_t)&h3_config },
1046 	{ NULL, 0 }
1047 };
1048 
1049 static int
1050 a10codec_probe(device_t dev)
1051 {
1052 	if (!ofw_bus_status_okay(dev))
1053 		return (ENXIO);
1054 
1055 	if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
1056 		return (ENXIO);
1057 
1058 	device_set_desc(dev, "Allwinner Audio Codec");
1059 	return (BUS_PROBE_DEFAULT);
1060 }
1061 
1062 static int
1063 a10codec_attach(device_t dev)
1064 {
1065 	struct a10codec_info *sc;
1066 	char status[SND_STATUSLEN];
1067 	struct gpiobus_pin *pa_pin;
1068 	phandle_t node;
1069 	clk_t clk_bus, clk_codec;
1070 	hwreset_t rst;
1071 	uint32_t val;
1072 	int error;
1073 
1074 	node = ofw_bus_get_node(dev);
1075 
1076 	sc = malloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO);
1077 	sc->cfg = (void *)ofw_bus_search_compatible(dev, compat_data)->ocd_data;
1078 	sc->dev = dev;
1079 	sc->lock = snd_mtxcreate(device_get_nameunit(dev), "a10codec softc");
1080 
1081 	if (bus_alloc_resources(dev, a10codec_spec, sc->res)) {
1082 		device_printf(dev, "cannot allocate resources for device\n");
1083 		error = ENXIO;
1084 		goto fail;
1085 	}
1086 
1087 	sc->dmasize = 131072;
1088 	error = bus_dma_tag_create(
1089 	    bus_get_dma_tag(dev),
1090 	    4, sc->dmasize,		/* alignment, boundary */
1091 	    BUS_SPACE_MAXADDR_32BIT,	/* lowaddr */
1092 	    BUS_SPACE_MAXADDR,		/* highaddr */
1093 	    NULL, NULL,			/* filter, filterarg */
1094 	    sc->dmasize, 1,		/* maxsize, nsegs */
1095 	    sc->dmasize, 0,		/* maxsegsize, flags */
1096 	    NULL, NULL,			/* lockfunc, lockarg */
1097 	    &sc->dmat);
1098 	if (error != 0) {
1099 		device_printf(dev, "cannot create DMA tag\n");
1100 		goto fail;
1101 	}
1102 
1103 	/* Get clocks */
1104 	if (clk_get_by_ofw_name(dev, 0, "apb", &clk_bus) != 0 &&
1105 	    clk_get_by_ofw_name(dev, 0, "ahb", &clk_bus) != 0) {
1106 		device_printf(dev, "cannot find bus clock\n");
1107 		goto fail;
1108 	}
1109 	if (clk_get_by_ofw_name(dev, 0, "codec", &clk_codec) != 0) {
1110 		device_printf(dev, "cannot find codec clock\n");
1111 		goto fail;
1112 	}
1113 
1114 	/* Gating bus clock for codec */
1115 	if (clk_enable(clk_bus) != 0) {
1116 		device_printf(dev, "cannot enable bus clock\n");
1117 		goto fail;
1118 	}
1119 	/* Activate audio codec clock. According to the A10 and A20 user
1120 	 * manuals, Audio_pll can be either 24.576MHz or 22.5792MHz. Most
1121 	 * audio sampling rates require an 24.576MHz input clock with the
1122 	 * exception of 44.1kHz, 22.05kHz, and 11.025kHz. Unfortunately,
1123 	 * both capture and playback use the same clock source so to
1124 	 * safely support independent full duplex operation, we use a fixed
1125 	 * 24.576MHz clock source and don't advertise native support for
1126 	 * the three sampling rates that require a 22.5792MHz input.
1127 	 */
1128 	error = clk_set_freq(clk_codec, 24576000, CLK_SET_ROUND_DOWN);
1129 	if (error != 0) {
1130 		device_printf(dev, "cannot set codec clock frequency\n");
1131 		goto fail;
1132 	}
1133 	/* Enable audio codec clock */
1134 	error = clk_enable(clk_codec);
1135 	if (error != 0) {
1136 		device_printf(dev, "cannot enable codec clock\n");
1137 		goto fail;
1138 	}
1139 
1140 	/* De-assert hwreset */
1141 	if (hwreset_get_by_ofw_idx(dev, 0, 0, &rst) == 0) {
1142 		error = hwreset_deassert(rst);
1143 		if (error != 0) {
1144 			device_printf(dev, "cannot de-assert reset\n");
1145 			goto fail;
1146 		}
1147 	}
1148 
1149 	/* Enable DAC */
1150 	val = CODEC_READ(sc, AC_DAC_DPC(sc));
1151 	val |= DAC_DPC_EN_DA;
1152 	CODEC_WRITE(sc, AC_DAC_DPC(sc), val);
1153 
1154 	if (mixer_init(dev, sc->cfg->mixer_class, sc)) {
1155 		device_printf(dev, "mixer_init failed\n");
1156 		goto fail;
1157 	}
1158 
1159 	/* Unmute PA */
1160 	if (gpio_pin_get_by_ofw_property(dev, node, "allwinner,pa-gpios",
1161 	    &pa_pin) == 0) {
1162 		error = gpio_pin_set_active(pa_pin, 1);
1163 		if (error != 0)
1164 			device_printf(dev, "failed to unmute PA\n");
1165 	}
1166 
1167 	pcm_setflags(dev, pcm_getflags(dev) | SD_F_MPSAFE);
1168 
1169 	if (pcm_register(dev, sc, 1, 1)) {
1170 		device_printf(dev, "pcm_register failed\n");
1171 		goto fail;
1172 	}
1173 
1174 	pcm_addchan(dev, PCMDIR_PLAY, &a10codec_chan_class, sc);
1175 	pcm_addchan(dev, PCMDIR_REC, &a10codec_chan_class, sc);
1176 
1177 	snprintf(status, SND_STATUSLEN, "at %s", ofw_bus_get_name(dev));
1178 	pcm_setstatus(dev, status);
1179 
1180 	return (0);
1181 
1182 fail:
1183 	bus_release_resources(dev, a10codec_spec, sc->res);
1184 	snd_mtxfree(sc->lock);
1185 	free(sc, M_DEVBUF);
1186 
1187 	return (ENXIO);
1188 }
1189 
1190 static device_method_t a10codec_pcm_methods[] = {
1191 	/* Device interface */
1192 	DEVMETHOD(device_probe,		a10codec_probe),
1193 	DEVMETHOD(device_attach,	a10codec_attach),
1194 
1195 	DEVMETHOD_END
1196 };
1197 
1198 static driver_t a10codec_pcm_driver = {
1199 	"pcm",
1200 	a10codec_pcm_methods,
1201 	PCM_SOFTC_SIZE,
1202 };
1203 
1204 DRIVER_MODULE(a10codec, simplebus, a10codec_pcm_driver, 0, 0);
1205 MODULE_DEPEND(a10codec, sound, SOUND_MINVER, SOUND_PREFVER, SOUND_MAXVER);
1206 MODULE_VERSION(a10codec, 1);
1207