1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2020 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
5 * Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/bus.h>
32 #include <sys/kernel.h>
33 #include <sys/lock.h>
34 #include <sys/module.h>
35 #include <sys/mutex.h>
36 #include <sys/rman.h>
37 #include <sys/resource.h>
38 #include <machine/bus.h>
39
40 #include <dev/ofw/ofw_bus.h>
41 #include <dev/ofw/ofw_bus_subr.h>
42
43 #include <dev/clk/clk.h>
44 #include <dev/hwreset/hwreset.h>
45 #include <dev/regulator/regulator.h>
46
47 #include "syscon_if.h"
48
49 #include "opt_snd.h"
50 #include <dev/sound/pcm/sound.h>
51 #include <dev/sound/fdt/audio_dai.h>
52 #include "audio_dai_if.h"
53 #include "mixer_if.h"
54
55 #define A64_PR_CFG 0x00
56 #define A64_AC_PR_RST (1 << 28)
57 #define A64_AC_PR_RW (1 << 24)
58 #define A64_AC_PR_ADDR_MASK (0x1f << 16)
59 #define A64_AC_PR_ADDR(n) (((n) & 0x1f) << 16)
60 #define A64_ACDA_PR_WDAT_MASK (0xff << 8)
61 #define A64_ACDA_PR_WDAT(n) (((n) & 0xff) << 8)
62 #define A64_ACDA_PR_RDAT(n) ((n) & 0xff)
63
64 #define A64_HP_CTRL 0x00
65 #define A64_HPPA_EN (1 << 6)
66 #define A64_HPVOL_MASK 0x3f
67 #define A64_HPVOL(n) ((n) & 0x3f)
68 #define A64_OL_MIX_CTRL 0x01
69 #define A64_LMIXMUTE_LDAC (1 << 1)
70 #define A64_OR_MIX_CTRL 0x02
71 #define A64_RMIXMUTE_RDAC (1 << 1)
72 #define A64_LINEOUT_CTRL0 0x05
73 #define A64_LINEOUT_LEFT_EN (1 << 7)
74 #define A64_LINEOUT_RIGHT_EN (1 << 6)
75 #define A64_LINEOUT_EN (A64_LINEOUT_LEFT_EN|A64_LINEOUT_RIGHT_EN)
76 #define A64_LINEOUT_CTRL1 0x06
77 #define A64_LINEOUT_VOL __BITS(4,0)
78 #define A64_MIC1_CTRL 0x07
79 #define A64_MIC1G __BITS(6,4)
80 #define A64_MIC1AMPEN (1 << 3)
81 #define A64_MIC1BOOST __BITS(2,0)
82 #define A64_MIC2_CTRL 0x08
83 #define A64_MIC2_SEL (1 << 7)
84 #define A64_MIC2G_MASK (7 << 4)
85 #define A64_MIC2G(n) (((n) & 7) << 4)
86 #define A64_MIC2AMPEN (1 << 3)
87 #define A64_MIC2BOOST_MASK (7 << 0)
88 #define A64_MIC2BOOST(n) (((n) & 7) << 0)
89 #define A64_LINEIN_CTRL 0x09
90 #define A64_LINEING __BITS(6,4)
91 #define A64_MIX_DAC_CTRL 0x0a
92 #define A64_DACAREN (1 << 7)
93 #define A64_DACALEN (1 << 6)
94 #define A64_RMIXEN (1 << 5)
95 #define A64_LMIXEN (1 << 4)
96 #define A64_RHPPAMUTE (1 << 3)
97 #define A64_LHPPAMUTE (1 << 2)
98 #define A64_RHPIS (1 << 1)
99 #define A64_LHPIS (1 << 0)
100 #define A64_L_ADCMIX_SRC 0x0b
101 #define A64_R_ADCMIX_SRC 0x0c
102 #define A64_ADCMIX_SRC_MIC1 (1 << 6)
103 #define A64_ADCMIX_SRC_MIC2 (1 << 5)
104 #define A64_ADCMIX_SRC_LINEIN (1 << 2)
105 #define A64_ADCMIX_SRC_OMIXER (1 << 1)
106 #define A64_ADC_CTRL 0x0d
107 #define A64_ADCREN (1 << 7)
108 #define A64_ADCLEN (1 << 6)
109 #define A64_ADCG __BITS(2,0)
110 #define A64_JACK_MIC_CTRL 0x1d
111 #define A64_JACKDETEN (1 << 7)
112 #define A64_INNERRESEN (1 << 6)
113 #define A64_HMICBIASEN (1 << 5)
114 #define A64_AUTOPLEN (1 << 1)
115
116 #define A64CODEC_MIXER_DEVS ((1 << SOUND_MIXER_VOLUME) | \
117 (1 << SOUND_MIXER_MIC))
118
119 static struct ofw_compat_data compat_data[] = {
120 { "allwinner,sun50i-a64-codec-analog", 1},
121 { NULL, 0 }
122 };
123
124 struct a64codec_softc {
125 device_t dev;
126 struct resource *res;
127 struct mtx mtx;
128 u_int regaddr; /* address for the sysctl */
129 };
130
131 #define A64CODEC_LOCK(sc) mtx_lock(&(sc)->mtx)
132 #define A64CODEC_UNLOCK(sc) mtx_unlock(&(sc)->mtx)
133 #define A64CODEC_READ(sc, reg) bus_read_4((sc)->res, (reg))
134 #define A64CODEC_WRITE(sc, reg, val) bus_write_4((sc)->res, (reg), (val))
135
136 static int a64codec_probe(device_t dev);
137 static int a64codec_attach(device_t dev);
138 static int a64codec_detach(device_t dev);
139
140 static u_int
a64_acodec_pr_read(struct a64codec_softc * sc,u_int addr)141 a64_acodec_pr_read(struct a64codec_softc *sc, u_int addr)
142 {
143 uint32_t val;
144
145 /* Read current value */
146 val = A64CODEC_READ(sc, A64_PR_CFG);
147
148 /* De-assert reset */
149 val |= A64_AC_PR_RST;
150 A64CODEC_WRITE(sc, A64_PR_CFG, val);
151
152 /* Read mode */
153 val &= ~A64_AC_PR_RW;
154 A64CODEC_WRITE(sc, A64_PR_CFG, val);
155
156 /* Set address */
157 val &= ~A64_AC_PR_ADDR_MASK;
158 val |= A64_AC_PR_ADDR(addr);
159 A64CODEC_WRITE(sc, A64_PR_CFG, val);
160
161 /* Read data */
162 val = A64CODEC_READ(sc, A64_PR_CFG);
163 return A64_ACDA_PR_RDAT(val);
164 }
165
166 static void
a64_acodec_pr_write(struct a64codec_softc * sc,u_int addr,u_int data)167 a64_acodec_pr_write(struct a64codec_softc *sc, u_int addr, u_int data)
168 {
169 uint32_t val;
170
171 /* Read current value */
172 val = A64CODEC_READ(sc, A64_PR_CFG);
173
174 /* De-assert reset */
175 val |= A64_AC_PR_RST;
176 A64CODEC_WRITE(sc, A64_PR_CFG, val);
177
178 /* Set address */
179 val &= ~A64_AC_PR_ADDR_MASK;
180 val |= A64_AC_PR_ADDR(addr);
181 A64CODEC_WRITE(sc, A64_PR_CFG, val);
182
183 /* Write data */
184 val &= ~A64_ACDA_PR_WDAT_MASK;
185 val |= A64_ACDA_PR_WDAT(data);
186 A64CODEC_WRITE(sc, A64_PR_CFG, val);
187
188 /* Write mode */
189 val |= A64_AC_PR_RW;
190 A64CODEC_WRITE(sc, A64_PR_CFG, val);
191
192 /* Clear write mode */
193 val &= ~A64_AC_PR_RW;
194 A64CODEC_WRITE(sc, A64_PR_CFG, val);
195 }
196
197 static void
a64_acodec_pr_set_clear(struct a64codec_softc * sc,u_int addr,u_int set,u_int clr)198 a64_acodec_pr_set_clear(struct a64codec_softc *sc, u_int addr, u_int set, u_int clr)
199 {
200 u_int old, new;
201
202 old = a64_acodec_pr_read(sc, addr);
203 new = set | (old & ~clr);
204 a64_acodec_pr_write(sc, addr, new);
205 }
206
207 static int
a64codec_probe(device_t dev)208 a64codec_probe(device_t dev)
209 {
210 if (!ofw_bus_status_okay(dev))
211 return (ENXIO);
212
213 if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
214 return (ENXIO);
215
216 device_set_desc(dev, "Allwinner A64 Analog Codec");
217 return (BUS_PROBE_DEFAULT);
218 }
219
220 static int
a64codec_attach(device_t dev)221 a64codec_attach(device_t dev)
222 {
223 struct a64codec_softc *sc;
224 int error, rid;
225 phandle_t node;
226 regulator_t reg;
227
228 sc = device_get_softc(dev);
229 sc->dev = dev;
230
231 mtx_init(&sc->mtx, device_get_nameunit(dev), NULL, MTX_DEF);
232
233 rid = 0;
234 sc->res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
235 if (!sc->res) {
236 device_printf(dev, "cannot allocate resource for device\n");
237 error = ENXIO;
238 goto fail;
239 }
240
241 if (regulator_get_by_ofw_property(dev, 0, "cpvdd-supply", ®) == 0) {
242 error = regulator_enable(reg);
243 if (error != 0) {
244 device_printf(dev, "cannot enable PHY regulator\n");
245 goto fail;
246 }
247 }
248
249 /* Right & Left Headphone PA enable */
250 a64_acodec_pr_set_clear(sc, A64_HP_CTRL,
251 A64_HPPA_EN, 0);
252
253 /* Microphone BIAS enable */
254 a64_acodec_pr_set_clear(sc, A64_JACK_MIC_CTRL,
255 A64_HMICBIASEN | A64_INNERRESEN, 0);
256
257 /* Unmute DAC to output mixer */
258 a64_acodec_pr_set_clear(sc, A64_OL_MIX_CTRL,
259 A64_LMIXMUTE_LDAC, 0);
260 a64_acodec_pr_set_clear(sc, A64_OR_MIX_CTRL,
261 A64_RMIXMUTE_RDAC, 0);
262
263 /* For now we work only with headphones */
264 a64_acodec_pr_set_clear(sc, A64_LINEOUT_CTRL0,
265 0, A64_LINEOUT_EN);
266 a64_acodec_pr_set_clear(sc, A64_HP_CTRL,
267 A64_HPPA_EN, 0);
268
269 u_int val = a64_acodec_pr_read(sc, A64_HP_CTRL);
270 val &= ~(0x3f);
271 val |= 0x25;
272 a64_acodec_pr_write(sc, A64_HP_CTRL, val);
273
274 a64_acodec_pr_set_clear(sc, A64_MIC2_CTRL,
275 A64_MIC2AMPEN | A64_MIC2_SEL | A64_MIC2G(0x3) | A64_MIC2BOOST(0x4),
276 A64_MIC2G_MASK | A64_MIC2BOOST_MASK);
277
278 a64_acodec_pr_write(sc, A64_L_ADCMIX_SRC,
279 A64_ADCMIX_SRC_MIC2);
280 a64_acodec_pr_write(sc, A64_R_ADCMIX_SRC,
281 A64_ADCMIX_SRC_MIC2);
282
283 /* Max out MIC2 gain */
284 val = a64_acodec_pr_read(sc, A64_MIC2_CTRL);
285 val &= ~(0x7);
286 val |= (0x7);
287 val &= ~(7 << 4);
288 val |= (7 << 4);
289 a64_acodec_pr_write(sc, A64_MIC2_CTRL, val);
290
291 node = ofw_bus_get_node(dev);
292 OF_device_register_xref(OF_xref_from_node(node), dev);
293
294 return (0);
295
296 fail:
297 a64codec_detach(dev);
298 return (error);
299 }
300
301 static int
a64codec_detach(device_t dev)302 a64codec_detach(device_t dev)
303 {
304 struct a64codec_softc *sc;
305
306 sc = device_get_softc(dev);
307
308 if (sc->res)
309 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->res);
310 mtx_destroy(&sc->mtx);
311
312 return (0);
313 }
314
315 static int
a64codec_mixer_init(struct snd_mixer * m)316 a64codec_mixer_init(struct snd_mixer *m)
317 {
318
319 mix_setdevs(m, A64CODEC_MIXER_DEVS);
320
321 return (0);
322 }
323
324 static int
a64codec_mixer_uninit(struct snd_mixer * m)325 a64codec_mixer_uninit(struct snd_mixer *m)
326 {
327
328 return (0);
329 }
330
331 static int
a64codec_mixer_reinit(struct snd_mixer * m)332 a64codec_mixer_reinit(struct snd_mixer *m)
333 {
334
335 return (0);
336 }
337
338 static int
a64codec_mixer_set(struct snd_mixer * m,unsigned dev,unsigned left,unsigned right)339 a64codec_mixer_set(struct snd_mixer *m, unsigned dev, unsigned left, unsigned right)
340 {
341 struct a64codec_softc *sc;
342 struct mtx *mixer_lock;
343 uint8_t do_unlock;
344 u_int val;
345
346 sc = device_get_softc(mix_getdevinfo(m));
347 mixer_lock = mixer_get_lock(m);
348
349 if (mtx_owned(mixer_lock)) {
350 do_unlock = 0;
351 } else {
352 do_unlock = 1;
353 mtx_lock(mixer_lock);
354 }
355
356 right = left;
357
358 A64CODEC_LOCK(sc);
359 switch(dev) {
360 case SOUND_MIXER_VOLUME:
361 val = a64_acodec_pr_read(sc, A64_HP_CTRL);
362 val &= ~(A64_HPVOL_MASK);
363 val |= A64_HPVOL(left * 63 / 100);
364 a64_acodec_pr_write(sc, A64_HP_CTRL, val);
365 break;
366
367 case SOUND_MIXER_MIC:
368 val = a64_acodec_pr_read(sc, A64_MIC2_CTRL);
369 val &= ~(A64_MIC2BOOST_MASK);
370 val |= A64_MIC2BOOST(left * 7 / 100);
371 a64_acodec_pr_write(sc, A64_MIC2_CTRL, val);
372 break;
373 default:
374 break;
375 }
376 A64CODEC_UNLOCK(sc);
377
378 if (do_unlock) {
379 mtx_unlock(mixer_lock);
380 }
381
382 return (left | (right << 8));
383 }
384
385 static unsigned
a64codec_mixer_setrecsrc(struct snd_mixer * m,unsigned src)386 a64codec_mixer_setrecsrc(struct snd_mixer *m, unsigned src)
387 {
388
389 return (0);
390 }
391
392 static kobj_method_t a64codec_mixer_methods[] = {
393 KOBJMETHOD(mixer_init, a64codec_mixer_init),
394 KOBJMETHOD(mixer_uninit, a64codec_mixer_uninit),
395 KOBJMETHOD(mixer_reinit, a64codec_mixer_reinit),
396 KOBJMETHOD(mixer_set, a64codec_mixer_set),
397 KOBJMETHOD(mixer_setrecsrc, a64codec_mixer_setrecsrc),
398 KOBJMETHOD_END
399 };
400
401 MIXER_DECLARE(a64codec_mixer);
402
403 static int
a64codec_dai_init(device_t dev,uint32_t format)404 a64codec_dai_init(device_t dev, uint32_t format)
405 {
406
407 return (0);
408 }
409
410 static int
a64codec_dai_trigger(device_t dev,int go,int pcm_dir)411 a64codec_dai_trigger(device_t dev, int go, int pcm_dir)
412 {
413 struct a64codec_softc *sc = device_get_softc(dev);
414
415 if ((pcm_dir != PCMDIR_PLAY) && (pcm_dir != PCMDIR_REC))
416 return (EINVAL);
417
418 switch (go) {
419 case PCMTRIG_START:
420 if (pcm_dir == PCMDIR_PLAY) {
421 /* Enable DAC analog l/r channels, HP PA, and output mixer */
422 a64_acodec_pr_set_clear(sc, A64_MIX_DAC_CTRL,
423 A64_DACAREN | A64_DACALEN | A64_RMIXEN | A64_LMIXEN |
424 A64_RHPPAMUTE | A64_LHPPAMUTE, 0);
425 }
426 else if (pcm_dir == PCMDIR_REC) {
427 /* Enable ADC analog l/r channels */
428 a64_acodec_pr_set_clear(sc, A64_ADC_CTRL,
429 A64_ADCREN | A64_ADCLEN, 0);
430 }
431 break;
432
433 case PCMTRIG_STOP:
434 case PCMTRIG_ABORT:
435 if (pcm_dir == PCMDIR_PLAY) {
436 /* Disable DAC analog l/r channels, HP PA, and output mixer */
437 a64_acodec_pr_set_clear(sc, A64_MIX_DAC_CTRL,
438 0, A64_DACAREN | A64_DACALEN | A64_RMIXEN | A64_LMIXEN |
439 A64_RHPPAMUTE | A64_LHPPAMUTE);
440 }
441 else if (pcm_dir == PCMDIR_REC) {
442 /* Disable ADC analog l/r channels */
443 a64_acodec_pr_set_clear(sc, A64_ADC_CTRL,
444 0, A64_ADCREN | A64_ADCLEN);
445 }
446 break;
447 }
448
449 return (0);
450 }
451
452 static int
a64codec_dai_setup_mixer(device_t dev,device_t pcmdev)453 a64codec_dai_setup_mixer(device_t dev, device_t pcmdev)
454 {
455
456 mixer_init(pcmdev, &a64codec_mixer_class, dev);
457
458 return (0);
459 }
460
461 static device_method_t a64codec_methods[] = {
462 /* Device interface */
463 DEVMETHOD(device_probe, a64codec_probe),
464 DEVMETHOD(device_attach, a64codec_attach),
465 DEVMETHOD(device_detach, a64codec_detach),
466
467 DEVMETHOD(audio_dai_init, a64codec_dai_init),
468 DEVMETHOD(audio_dai_setup_mixer, a64codec_dai_setup_mixer),
469 DEVMETHOD(audio_dai_trigger, a64codec_dai_trigger),
470
471 DEVMETHOD_END
472 };
473
474 static driver_t a64codec_driver = {
475 "a64codec",
476 a64codec_methods,
477 sizeof(struct a64codec_softc),
478 };
479
480 DRIVER_MODULE(a64codec, simplebus, a64codec_driver, 0, 0);
481 SIMPLEBUS_PNP_INFO(compat_data);
482