1 // SPDX-License-Identifier: GPL-2.0
3 // Socionext UniPhier AIO ALSA CPU DAI driver.
5 // Copyright (c) 2016-2018 Socionext Inc.
8 #include <linux/errno.h>
9 #include <linux/kernel.h>
10 #include <linux/mfd/syscon.h>
11 #include <linux/module.h>
13 #include <linux/of_platform.h>
14 #include <linux/platform_device.h>
15 #include <linux/reset.h>
16 #include <sound/core.h>
17 #include <sound/pcm.h>
18 #include <sound/pcm_params.h>
19 #include <sound/soc.h>
23 static bool is_valid_pll(struct uniphier_aio_chip *chip, int pll_id)
25 struct device *dev = &chip->pdev->dev;
27 if (pll_id < 0 || chip->num_plls <= pll_id) {
28 dev_err(dev, "PLL(%d) is not supported\n", pll_id);
32 return chip->plls[pll_id].enable;
36 * find_volume - find volume supported HW port by HW port number
37 * @chip: the AIO chip pointer
38 * @oport_hw: HW port number, one of AUD_HW_XXXX
40 * Find AIO device from device list by HW port number. Volume feature is
41 * available only in Output and PCM ports, this limitation comes from HW
44 * Return: The pointer of AIO substream if successful, otherwise NULL on error.
46 static struct uniphier_aio_sub *find_volume(struct uniphier_aio_chip *chip,
51 for (i = 0; i < chip->num_aios; i++) {
52 struct uniphier_aio_sub *sub = &chip->aios[i].sub[0];
57 if (sub->swm->oport.hw == oport_hw)
64 static bool match_spec(const struct uniphier_aio_spec *spec,
65 const char *name, int dir)
67 if (dir == SNDRV_PCM_STREAM_PLAYBACK &&
68 spec->swm.dir != PORT_DIR_OUTPUT) {
72 if (dir == SNDRV_PCM_STREAM_CAPTURE &&
73 spec->swm.dir != PORT_DIR_INPUT) {
77 if (spec->name && strcmp(spec->name, name) == 0)
80 if (spec->gname && strcmp(spec->gname, name) == 0)
87 * find_spec - find HW specification info by name
88 * @aio: the AIO device pointer
89 * @name: name of device
90 * @direction: the direction of substream, SNDRV_PCM_STREAM_*
92 * Find hardware specification information from list by device name. This
93 * information is used for telling the difference of SoCs to driver.
95 * Specification list is array of 'struct uniphier_aio_spec' which is defined
96 * in each drivers (see: aio-i2s.c).
98 * Return: The pointer of hardware specification of AIO if successful,
99 * otherwise NULL on error.
101 static const struct uniphier_aio_spec *find_spec(struct uniphier_aio *aio,
105 const struct uniphier_aio_chip_spec *chip_spec = aio->chip->chip_spec;
108 for (i = 0; i < chip_spec->num_specs; i++) {
109 const struct uniphier_aio_spec *spec = &chip_spec->specs[i];
111 if (match_spec(spec, name, direction))
119 * find_divider - find clock divider by frequency
120 * @aio: the AIO device pointer
121 * @pll_id: PLL ID, should be AUD_PLL_XX
122 * @freq: required frequency
124 * Find suitable clock divider by frequency.
126 * Return: The ID of PLL if successful, otherwise negative error value.
128 static int find_divider(struct uniphier_aio *aio, int pll_id, unsigned int freq)
130 struct uniphier_aio_pll *pll;
131 int mul[] = { 1, 1, 1, 2, };
132 int div[] = { 2, 3, 1, 3, };
135 if (!is_valid_pll(aio->chip, pll_id))
138 pll = &aio->chip->plls[pll_id];
139 for (i = 0; i < ARRAY_SIZE(mul); i++)
140 if (pll->freq * mul[i] / div[i] == freq)
146 static int uniphier_aio_set_sysclk(struct snd_soc_dai *dai, int clk_id,
147 unsigned int freq, int dir)
149 struct uniphier_aio *aio = uniphier_priv(dai);
150 struct device *dev = &aio->chip->pdev->dev;
151 bool pll_auto = false;
178 pll_id = AUD_PLL_APLL;
181 pll_id = AUD_PLL_RX0;
184 pll_id = AUD_PLL_USB0;
187 pll_id = AUD_PLL_HSC0;
190 dev_err(dev, "Sysclk(%d) is not supported\n", clk_id);
195 for (pll_id = 0; pll_id < aio->chip->num_plls; pll_id++) {
196 div_id = find_divider(aio, pll_id, freq);
198 aio->plldiv = div_id;
202 if (pll_id == aio->chip->num_plls) {
203 dev_err(dev, "Sysclk frequency is not supported(%d)\n",
209 if (dir == SND_SOC_CLOCK_OUT)
210 aio->pll_out = pll_id;
212 aio->pll_in = pll_id;
217 static int uniphier_aio_set_pll(struct snd_soc_dai *dai, int pll_id,
218 int source, unsigned int freq_in,
219 unsigned int freq_out)
221 struct uniphier_aio *aio = uniphier_priv(dai);
224 if (!is_valid_pll(aio->chip, pll_id))
227 ret = aio_chip_set_pll(aio->chip, pll_id, freq_out);
234 static int uniphier_aio_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
236 struct uniphier_aio *aio = uniphier_priv(dai);
237 struct device *dev = &aio->chip->pdev->dev;
239 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
240 case SND_SOC_DAIFMT_LEFT_J:
241 case SND_SOC_DAIFMT_RIGHT_J:
242 case SND_SOC_DAIFMT_I2S:
243 aio->fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK;
246 dev_err(dev, "Format is not supported(%d)\n",
247 fmt & SND_SOC_DAIFMT_FORMAT_MASK);
254 static int uniphier_aio_startup(struct snd_pcm_substream *substream,
255 struct snd_soc_dai *dai)
257 struct uniphier_aio *aio = uniphier_priv(dai);
258 struct uniphier_aio_sub *sub = &aio->sub[substream->stream];
261 sub->substream = substream;
262 sub->pass_through = 0;
263 sub->use_mmap = true;
272 static void uniphier_aio_shutdown(struct snd_pcm_substream *substream,
273 struct snd_soc_dai *dai)
275 struct uniphier_aio *aio = uniphier_priv(dai);
276 struct uniphier_aio_sub *sub = &aio->sub[substream->stream];
278 sub->substream = NULL;
281 static int uniphier_aio_hw_params(struct snd_pcm_substream *substream,
282 struct snd_pcm_hw_params *params,
283 struct snd_soc_dai *dai)
285 struct uniphier_aio *aio = uniphier_priv(dai);
286 struct uniphier_aio_sub *sub = &aio->sub[substream->stream];
287 struct device *dev = &aio->chip->pdev->dev;
290 switch (params_rate(params)) {
301 dev_err(dev, "Rate is not supported(%d)\n",
302 params_rate(params));
305 ret = snd_soc_dai_set_sysclk(dai, AUD_CLK_A,
306 freq, SND_SOC_CLOCK_OUT);
310 sub->params = *params;
314 aio_port_set_volume(sub, sub->vol);
320 static int uniphier_aio_hw_free(struct snd_pcm_substream *substream,
321 struct snd_soc_dai *dai)
323 struct uniphier_aio *aio = uniphier_priv(dai);
324 struct uniphier_aio_sub *sub = &aio->sub[substream->stream];
331 static int uniphier_aio_prepare(struct snd_pcm_substream *substream,
332 struct snd_soc_dai *dai)
334 struct uniphier_aio *aio = uniphier_priv(dai);
335 struct uniphier_aio_sub *sub = &aio->sub[substream->stream];
338 ret = aio_port_set_param(sub, sub->pass_through, &sub->params);
341 ret = aio_src_set_param(sub, &sub->params);
344 aio_port_set_enable(sub, 1);
346 ret = aio_if_set_param(sub, sub->pass_through);
350 if (sub->swm->type == PORT_TYPE_CONV) {
351 ret = aio_srcif_set_param(sub);
354 ret = aio_srcch_set_param(sub);
357 aio_srcch_set_enable(sub, 1);
363 const struct snd_soc_dai_ops uniphier_aio_i2s_ops = {
364 .set_sysclk = uniphier_aio_set_sysclk,
365 .set_pll = uniphier_aio_set_pll,
366 .set_fmt = uniphier_aio_set_fmt,
367 .startup = uniphier_aio_startup,
368 .shutdown = uniphier_aio_shutdown,
369 .hw_params = uniphier_aio_hw_params,
370 .hw_free = uniphier_aio_hw_free,
371 .prepare = uniphier_aio_prepare,
373 EXPORT_SYMBOL_GPL(uniphier_aio_i2s_ops);
375 const struct snd_soc_dai_ops uniphier_aio_spdif_ops = {
376 .set_sysclk = uniphier_aio_set_sysclk,
377 .set_pll = uniphier_aio_set_pll,
378 .startup = uniphier_aio_startup,
379 .shutdown = uniphier_aio_shutdown,
380 .hw_params = uniphier_aio_hw_params,
381 .hw_free = uniphier_aio_hw_free,
382 .prepare = uniphier_aio_prepare,
384 EXPORT_SYMBOL_GPL(uniphier_aio_spdif_ops);
386 int uniphier_aio_dai_probe(struct snd_soc_dai *dai)
388 struct uniphier_aio *aio = uniphier_priv(dai);
391 for (i = 0; i < ARRAY_SIZE(aio->sub); i++) {
392 struct uniphier_aio_sub *sub = &aio->sub[i];
393 const struct uniphier_aio_spec *spec;
395 spec = find_spec(aio, dai->name, i);
399 sub->swm = &spec->swm;
402 sub->vol = AUD_VOL_INIT;
405 aio_iecout_set_enable(aio->chip, true);
406 aio_chip_init(aio->chip);
407 aio->chip->active = 1;
411 EXPORT_SYMBOL_GPL(uniphier_aio_dai_probe);
413 int uniphier_aio_dai_remove(struct snd_soc_dai *dai)
415 struct uniphier_aio *aio = uniphier_priv(dai);
417 aio->chip->active = 0;
421 EXPORT_SYMBOL_GPL(uniphier_aio_dai_remove);
423 int uniphier_aio_dai_suspend(struct snd_soc_dai *dai)
425 struct uniphier_aio *aio = uniphier_priv(dai);
427 aio->chip->num_wup_aios--;
428 if (!aio->chip->num_wup_aios) {
429 reset_control_assert(aio->chip->rst);
430 clk_disable_unprepare(aio->chip->clk);
435 EXPORT_SYMBOL_GPL(uniphier_aio_dai_suspend);
437 int uniphier_aio_dai_resume(struct snd_soc_dai *dai)
439 struct uniphier_aio *aio = uniphier_priv(dai);
442 if (!aio->chip->active)
445 if (!aio->chip->num_wup_aios) {
446 ret = clk_prepare_enable(aio->chip->clk);
450 ret = reset_control_deassert(aio->chip->rst);
455 aio_iecout_set_enable(aio->chip, true);
456 aio_chip_init(aio->chip);
458 for (i = 0; i < ARRAY_SIZE(aio->sub); i++) {
459 struct uniphier_aio_sub *sub = &aio->sub[i];
461 if (!sub->spec || !sub->substream)
474 aio->chip->num_wup_aios++;
479 if (!aio->chip->num_wup_aios)
480 reset_control_assert(aio->chip->rst);
482 if (!aio->chip->num_wup_aios)
483 clk_disable_unprepare(aio->chip->clk);
487 EXPORT_SYMBOL_GPL(uniphier_aio_dai_resume);
489 static int uniphier_aio_vol_info(struct snd_kcontrol *kcontrol,
490 struct snd_ctl_elem_info *uinfo)
492 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
494 uinfo->value.integer.min = 0;
495 uinfo->value.integer.max = AUD_VOL_MAX;
500 static int uniphier_aio_vol_get(struct snd_kcontrol *kcontrol,
501 struct snd_ctl_elem_value *ucontrol)
503 struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
504 struct uniphier_aio_chip *chip = snd_soc_component_get_drvdata(comp);
505 struct uniphier_aio_sub *sub;
506 int oport_hw = kcontrol->private_value;
508 sub = find_volume(chip, oport_hw);
512 ucontrol->value.integer.value[0] = sub->vol;
517 static int uniphier_aio_vol_put(struct snd_kcontrol *kcontrol,
518 struct snd_ctl_elem_value *ucontrol)
520 struct snd_soc_component *comp = snd_soc_kcontrol_component(kcontrol);
521 struct uniphier_aio_chip *chip = snd_soc_component_get_drvdata(comp);
522 struct uniphier_aio_sub *sub;
523 int oport_hw = kcontrol->private_value;
525 sub = find_volume(chip, oport_hw);
529 if (sub->vol == ucontrol->value.integer.value[0])
531 sub->vol = ucontrol->value.integer.value[0];
533 aio_port_set_volume(sub, sub->vol);
538 static const struct snd_kcontrol_new uniphier_aio_controls[] = {
540 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
541 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
542 .name = "HPCMOUT1 Volume",
543 .info = uniphier_aio_vol_info,
544 .get = uniphier_aio_vol_get,
545 .put = uniphier_aio_vol_put,
546 .private_value = AUD_HW_HPCMOUT1,
549 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
550 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
551 .name = "PCMOUT1 Volume",
552 .info = uniphier_aio_vol_info,
553 .get = uniphier_aio_vol_get,
554 .put = uniphier_aio_vol_put,
555 .private_value = AUD_HW_PCMOUT1,
558 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
559 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
560 .name = "PCMOUT2 Volume",
561 .info = uniphier_aio_vol_info,
562 .get = uniphier_aio_vol_get,
563 .put = uniphier_aio_vol_put,
564 .private_value = AUD_HW_PCMOUT2,
567 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
568 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
569 .name = "PCMOUT3 Volume",
570 .info = uniphier_aio_vol_info,
571 .get = uniphier_aio_vol_get,
572 .put = uniphier_aio_vol_put,
573 .private_value = AUD_HW_PCMOUT3,
576 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
577 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
578 .name = "HIECOUT1 Volume",
579 .info = uniphier_aio_vol_info,
580 .get = uniphier_aio_vol_get,
581 .put = uniphier_aio_vol_put,
582 .private_value = AUD_HW_HIECOUT1,
585 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
586 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
587 .name = "IECOUT1 Volume",
588 .info = uniphier_aio_vol_info,
589 .get = uniphier_aio_vol_get,
590 .put = uniphier_aio_vol_put,
591 .private_value = AUD_HW_IECOUT1,
595 static const struct snd_soc_component_driver uniphier_aio_component = {
596 .name = "uniphier-aio",
597 .controls = uniphier_aio_controls,
598 .num_controls = ARRAY_SIZE(uniphier_aio_controls),
601 int uniphier_aio_probe(struct platform_device *pdev)
603 struct uniphier_aio_chip *chip;
604 struct device *dev = &pdev->dev;
607 chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
611 chip->chip_spec = of_device_get_match_data(dev);
612 if (!chip->chip_spec)
615 chip->regmap_sg = syscon_regmap_lookup_by_phandle(dev->of_node,
617 if (IS_ERR(chip->regmap_sg)) {
618 if (PTR_ERR(chip->regmap_sg) == -EPROBE_DEFER)
619 return -EPROBE_DEFER;
620 chip->regmap_sg = NULL;
623 chip->clk = devm_clk_get(dev, "aio");
624 if (IS_ERR(chip->clk))
625 return PTR_ERR(chip->clk);
627 chip->rst = devm_reset_control_get_shared(dev, "aio");
628 if (IS_ERR(chip->rst))
629 return PTR_ERR(chip->rst);
631 chip->num_aios = chip->chip_spec->num_dais;
632 chip->num_wup_aios = chip->num_aios;
633 chip->aios = devm_kcalloc(dev,
634 chip->num_aios, sizeof(struct uniphier_aio),
639 chip->num_plls = chip->chip_spec->num_plls;
640 chip->plls = devm_kcalloc(dev,
642 sizeof(struct uniphier_aio_pll),
646 memcpy(chip->plls, chip->chip_spec->plls,
647 sizeof(struct uniphier_aio_pll) * chip->num_plls);
649 for (i = 0; i < chip->num_aios; i++) {
650 struct uniphier_aio *aio = &chip->aios[i];
653 aio->fmt = SND_SOC_DAIFMT_I2S;
655 for (j = 0; j < ARRAY_SIZE(aio->sub); j++) {
656 struct uniphier_aio_sub *sub = &aio->sub[j];
659 spin_lock_init(&sub->lock);
664 platform_set_drvdata(pdev, chip);
666 ret = clk_prepare_enable(chip->clk);
670 ret = reset_control_deassert(chip->rst);
674 ret = devm_snd_soc_register_component(dev, &uniphier_aio_component,
675 chip->chip_spec->dais,
676 chip->chip_spec->num_dais);
678 dev_err(dev, "Register component failed.\n");
682 ret = uniphier_aiodma_soc_register_platform(pdev);
684 dev_err(dev, "Register platform failed.\n");
691 reset_control_assert(chip->rst);
694 clk_disable_unprepare(chip->clk);
698 EXPORT_SYMBOL_GPL(uniphier_aio_probe);
700 int uniphier_aio_remove(struct platform_device *pdev)
702 struct uniphier_aio_chip *chip = platform_get_drvdata(pdev);
704 reset_control_assert(chip->rst);
705 clk_disable_unprepare(chip->clk);
709 EXPORT_SYMBOL_GPL(uniphier_aio_remove);
711 MODULE_AUTHOR("Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>");
712 MODULE_DESCRIPTION("UniPhier AIO CPU DAI driver.");
713 MODULE_LICENSE("GPL v2");