[thirdparty/linux.git] / sound / soc / meson / axg-card.c

// SPDX-License-Identifier: (GPL-2.0 OR MIT)
//
// Copyright (c) 2018 BayLibre, SAS.
// Author: Jerome Brunet <jbrunet@baylibre.com>

#include <linux/module.h>
#include <linux/of_platform.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>

#include "axg-tdm.h"
#include "meson-card.h"

struct axg_dai_link_tdm_mask {
	u32 tx;
	u32 rx;
};

struct axg_dai_link_tdm_data {
	unsigned int mclk_fs;
	unsigned int slots;
	unsigned int slot_width;
	u32 *tx_mask;
	u32 *rx_mask;
	struct axg_dai_link_tdm_mask *codec_masks;
};

/*
 * Base params for the codec to codec links
 * Those will be over-written by the CPU side of the link
 */
static const struct snd_soc_pcm_stream codec_params = {
	.formats = SNDRV_PCM_FMTBIT_S24_LE,
	.rate_min = 5525,
	.rate_max = 192000,
	.channels_min = 1,
	.channels_max = 8,
};

static int axg_card_tdm_be_hw_params(struct snd_pcm_substream *substream,
				     struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card);
	struct axg_dai_link_tdm_data *be =
		(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];

	return meson_card_i2s_set_sysclk(substream, params, be->mclk_fs);
}

static const struct snd_soc_ops axg_card_tdm_be_ops = {
	.hw_params = axg_card_tdm_be_hw_params,
};

static int axg_card_tdm_dai_init(struct snd_soc_pcm_runtime *rtd)
{
	struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card);
	struct axg_dai_link_tdm_data *be =
		(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];
	struct snd_soc_dai *codec_dai;
	int ret, i;

	for_each_rtd_codec_dais(rtd, i, codec_dai) {
		ret = snd_soc_dai_set_tdm_slot(codec_dai,
					       be->codec_masks[i].tx,
					       be->codec_masks[i].rx,
					       be->slots, be->slot_width);
		if (ret && ret != -ENOTSUPP) {
			dev_err(codec_dai->dev,
				"setting tdm link slots failed\n");
			return ret;
		}
	}

	ret = axg_tdm_set_tdm_slots(asoc_rtd_to_cpu(rtd, 0), be->tx_mask, be->rx_mask,
				    be->slots, be->slot_width);
	if (ret) {
		dev_err(asoc_rtd_to_cpu(rtd, 0)->dev, "setting tdm link slots failed\n");
		return ret;
	}

	return 0;
}

static int axg_card_tdm_dai_lb_init(struct snd_soc_pcm_runtime *rtd)
{
	struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card);
	struct axg_dai_link_tdm_data *be =
		(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];
	int ret;

	/* The loopback rx_mask is the pad tx_mask */
	ret = axg_tdm_set_tdm_slots(asoc_rtd_to_cpu(rtd, 0), NULL, be->tx_mask,
				    be->slots, be->slot_width);
	if (ret) {
		dev_err(asoc_rtd_to_cpu(rtd, 0)->dev, "setting tdm link slots failed\n");
		return ret;
	}

	return 0;
}

static int axg_card_add_tdm_loopback(struct snd_soc_card *card,
				     int *index)
{
	struct meson_card *priv = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai_link *pad = &card->dai_link[*index];
	struct snd_soc_dai_link *lb;
	struct snd_soc_dai_link_component *dlc;
	int ret;

	/* extend links */
	ret = meson_card_reallocate_links(card, card->num_links + 1);
	if (ret)
		return ret;

	lb = &card->dai_link[*index + 1];

	lb->name = kasprintf(GFP_KERNEL, "%s-lb", pad->name);
	if (!lb->name)
		return -ENOMEM;

	dlc = devm_kzalloc(card->dev, 2 * sizeof(*dlc), GFP_KERNEL);
	if (!dlc)
		return -ENOMEM;

	lb->cpus = &dlc[0];
	lb->codecs = &dlc[1];
	lb->num_cpus = 1;
	lb->num_codecs = 1;

	lb->stream_name = lb->name;
	lb->cpus->of_node = pad->cpus->of_node;
	lb->cpus->dai_name = "TDM Loopback";
	lb->codecs->name = "snd-soc-dummy";
	lb->codecs->dai_name = "snd-soc-dummy-dai";
	lb->dpcm_capture = 1;
	lb->no_pcm = 1;
	lb->ops = &axg_card_tdm_be_ops;
	lb->init = axg_card_tdm_dai_lb_init;

	/* Provide the same link data to the loopback */
	priv->link_data[*index + 1] = priv->link_data[*index];

	/*
	 * axg_card_clean_references() will iterate over this link,
	 * make sure the node count is balanced
	 */
	of_node_get(lb->cpus->of_node);

	/* Let add_links continue where it should */
	*index += 1;

	return 0;
}

static int axg_card_parse_cpu_tdm_slots(struct snd_soc_card *card,
					struct snd_soc_dai_link *link,
					struct device_node *node,
					struct axg_dai_link_tdm_data *be)
{
	char propname[32];
	u32 tx, rx;
	int i;

	be->tx_mask = devm_kcalloc(card->dev, AXG_TDM_NUM_LANES,
				   sizeof(*be->tx_mask), GFP_KERNEL);
	be->rx_mask = devm_kcalloc(card->dev, AXG_TDM_NUM_LANES,
				   sizeof(*be->rx_mask), GFP_KERNEL);
	if (!be->tx_mask || !be->rx_mask)
		return -ENOMEM;

	for (i = 0, tx = 0; i < AXG_TDM_NUM_LANES; i++) {
		snprintf(propname, 32, "dai-tdm-slot-tx-mask-%d", i);
		snd_soc_of_get_slot_mask(node, propname, &be->tx_mask[i]);
		tx = max(tx, be->tx_mask[i]);
	}

	/* Disable playback is the interface has no tx slots */
	if (!tx)
		link->dpcm_playback = 0;

	for (i = 0, rx = 0; i < AXG_TDM_NUM_LANES; i++) {
		snprintf(propname, 32, "dai-tdm-slot-rx-mask-%d", i);
		snd_soc_of_get_slot_mask(node, propname, &be->rx_mask[i]);
		rx = max(rx, be->rx_mask[i]);
	}

	/* Disable capture is the interface has no rx slots */
	if (!rx)
		link->dpcm_capture = 0;

	/* ... but the interface should at least have one of them */
	if (!tx && !rx) {
		dev_err(card->dev, "tdm link has no cpu slots\n");
		return -EINVAL;
	}

	of_property_read_u32(node, "dai-tdm-slot-num", &be->slots);
	if (!be->slots) {
		/*
		 * If the slot number is not provided, set it such as it
		 * accommodates the largest mask
		 */
		be->slots = fls(max(tx, rx));
	} else if (be->slots < fls(max(tx, rx)) || be->slots > 32) {
		/*
		 * Error if the slots can't accommodate the largest mask or
		 * if it is just too big
		 */
		dev_err(card->dev, "bad slot number\n");
		return -EINVAL;
	}

	of_property_read_u32(node, "dai-tdm-slot-width", &be->slot_width);

	return 0;
}

static int axg_card_parse_codecs_masks(struct snd_soc_card *card,
				       struct snd_soc_dai_link *link,
				       struct device_node *node,
				       struct axg_dai_link_tdm_data *be)
{
	struct axg_dai_link_tdm_mask *codec_mask;
	struct device_node *np;

	codec_mask = devm_kcalloc(card->dev, link->num_codecs,
				  sizeof(*codec_mask), GFP_KERNEL);
	if (!codec_mask)
		return -ENOMEM;

	be->codec_masks = codec_mask;

	for_each_child_of_node(node, np) {
		snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask",
					 &codec_mask->rx);
		snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask",
					 &codec_mask->tx);

		codec_mask++;
	}

	return 0;
}

static int axg_card_parse_tdm(struct snd_soc_card *card,
			      struct device_node *node,
			      int *index)
{
	struct meson_card *priv = snd_soc_card_get_drvdata(card);
	struct snd_soc_dai_link *link = &card->dai_link[*index];
	struct axg_dai_link_tdm_data *be;
	int ret;

	/* Allocate tdm link parameters */
	be = devm_kzalloc(card->dev, sizeof(*be), GFP_KERNEL);
	if (!be)
		return -ENOMEM;
	priv->link_data[*index] = be;

	/* Setup tdm link */
	link->ops = &axg_card_tdm_be_ops;
	link->init = axg_card_tdm_dai_init;
	link->dai_fmt = meson_card_parse_daifmt(node, link->cpus->of_node);

	of_property_read_u32(node, "mclk-fs", &be->mclk_fs);

	ret = axg_card_parse_cpu_tdm_slots(card, link, node, be);
	if (ret) {
		dev_err(card->dev, "error parsing tdm link slots\n");
		return ret;
	}

	ret = axg_card_parse_codecs_masks(card, link, node, be);
	if (ret)
		return ret;

	/* Add loopback if the pad dai has playback */
	if (link->dpcm_playback) {
		ret = axg_card_add_tdm_loopback(card, index);
		if (ret)
			return ret;
	}

	return 0;
}

static int axg_card_cpu_is_capture_fe(struct device_node *np)
{
	return of_device_is_compatible(np, DT_PREFIX "axg-toddr");
}

static int axg_card_cpu_is_playback_fe(struct device_node *np)
{
	return of_device_is_compatible(np, DT_PREFIX "axg-frddr");
}

static int axg_card_cpu_is_tdm_iface(struct device_node *np)
{
	return of_device_is_compatible(np, DT_PREFIX "axg-tdm-iface");
}

static int axg_card_cpu_is_codec(struct device_node *np)
{
	return of_device_is_compatible(np, DT_PREFIX "g12a-tohdmitx") ||
		of_device_is_compatible(np, DT_PREFIX "g12a-toacodec");
}

static int axg_card_add_link(struct snd_soc_card *card, struct device_node *np,
			     int *index)
{
	struct snd_soc_dai_link *dai_link = &card->dai_link[*index];
	struct snd_soc_dai_link_component *cpu;
	int ret;

	cpu = devm_kzalloc(card->dev, sizeof(*cpu), GFP_KERNEL);
	if (!cpu)
		return -ENOMEM;

	dai_link->cpus = cpu;
	dai_link->num_cpus = 1;

	ret = meson_card_parse_dai(card, np, &dai_link->cpus->of_node,
				   &dai_link->cpus->dai_name);
	if (ret)
		return ret;

	if (axg_card_cpu_is_playback_fe(dai_link->cpus->of_node))
		ret = meson_card_set_fe_link(card, dai_link, np, true);
	else if (axg_card_cpu_is_capture_fe(dai_link->cpus->of_node))
		ret = meson_card_set_fe_link(card, dai_link, np, false);
	else
		ret = meson_card_set_be_link(card, dai_link, np);

	if (ret)
		return ret;

	if (axg_card_cpu_is_tdm_iface(dai_link->cpus->of_node))
		ret = axg_card_parse_tdm(card, np, index);
	else if (axg_card_cpu_is_codec(dai_link->cpus->of_node)) {
		dai_link->params = &codec_params;
		dai_link->no_pcm = 0; /* link is not a DPCM BE */
	}

	return ret;
}

static const struct meson_card_match_data axg_card_match_data = {
	.add_link = axg_card_add_link,
};

static const struct of_device_id axg_card_of_match[] = {
	{
		.compatible = "amlogic,axg-sound-card",
		.data = &axg_card_match_data,
	}, {}
};
MODULE_DEVICE_TABLE(of, axg_card_of_match);

static struct platform_driver axg_card_pdrv = {
	.probe = meson_card_probe,
	.remove = meson_card_remove,
	.driver = {
		.name = "axg-sound-card",
		.of_match_table = axg_card_of_match,
	},
};
module_platform_driver(axg_card_pdrv);

MODULE_DESCRIPTION("Amlogic AXG ALSA machine driver");
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
7864a79f JB	1	// SPDX-License-Identifier: (GPL-2.0 OR MIT)
	2	//
	3	// Copyright (c) 2018 BayLibre, SAS.
	4	// Author: Jerome Brunet <jbrunet@baylibre.com>
	5
	6	#include <linux/module.h>
	7	#include <linux/of_platform.h>
	8	#include <sound/soc.h>
	9	#include <sound/soc-dai.h>
	10
	11	#include "axg-tdm.h"
aa9c3b72	12	#include "meson-card.h"
7864a79f JB	13
	14	struct axg_dai_link_tdm_mask {
	15	u32 tx;
	16	u32 rx;
	17	};
	18
	19	struct axg_dai_link_tdm_data {
	20	unsigned int mclk_fs;
	21	unsigned int slots;
	22	unsigned int slot_width;
	23	u32 *tx_mask;
	24	u32 *rx_mask;
	25	struct axg_dai_link_tdm_mask *codec_masks;
	26	};
	27
0a8f1117 JB	28	/*
	29	* Base params for the codec to codec links
	30	* Those will be over-written by the CPU side of the link
	31	*/
	32	static const struct snd_soc_pcm_stream codec_params = {
	33	.formats = SNDRV_PCM_FMTBIT_S24_LE,
	34	.rate_min = 5525,
	35	.rate_max = 192000,
	36	.channels_min = 1,
	37	.channels_max = 8,
	38	};
	39
7864a79f JB	40	static int axg_card_tdm_be_hw_params(struct snd_pcm_substream *substream,
	41	struct snd_pcm_hw_params *params)
	42	{
	43	struct snd_soc_pcm_runtime *rtd = substream->private_data;
aa9c3b72	44	struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card);
7864a79f JB	45	struct axg_dai_link_tdm_data *be =
7864a79f JB	46	(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];
7864a79f	47
aa9c3b72	48	return meson_card_i2s_set_sysclk(substream, params, be->mclk_fs);
7864a79f JB	49	}
	50
	51	static const struct snd_soc_ops axg_card_tdm_be_ops = {
	52	.hw_params = axg_card_tdm_be_hw_params,
	53	};
	54
	55	static int axg_card_tdm_dai_init(struct snd_soc_pcm_runtime *rtd)
	56	{
aa9c3b72	57	struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card);
7864a79f JB	58	struct axg_dai_link_tdm_data *be =
	59	(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];
	60	struct snd_soc_dai *codec_dai;
	61	int ret, i;
	62
b5c52f58	63	for_each_rtd_codec_dais(rtd, i, codec_dai) {
7864a79f JB	64	ret = snd_soc_dai_set_tdm_slot(codec_dai,
	65	be->codec_masks[i].tx,
	66	be->codec_masks[i].rx,
	67	be->slots, be->slot_width);
	68	if (ret && ret != -ENOTSUPP) {
	69	dev_err(codec_dai->dev,
	70	"setting tdm link slots failed\n");
	71	return ret;
	72	}
	73	}
	74
385a5c60	75	ret = axg_tdm_set_tdm_slots(asoc_rtd_to_cpu(rtd, 0), be->tx_mask, be->rx_mask,
7864a79f JB	76	be->slots, be->slot_width);
7864a79f JB	77	if (ret) {
385a5c60	78	dev_err(asoc_rtd_to_cpu(rtd, 0)->dev, "setting tdm link slots failed\n");
7864a79f JB	79	return ret;
	80	}
	81
	82	return 0;
	83	}
	84
	85	static int axg_card_tdm_dai_lb_init(struct snd_soc_pcm_runtime *rtd)
	86	{
aa9c3b72	87	struct meson_card *priv = snd_soc_card_get_drvdata(rtd->card);
7864a79f JB	88	struct axg_dai_link_tdm_data *be =
	89	(struct axg_dai_link_tdm_data *)priv->link_data[rtd->num];
	90	int ret;
	91
	92	/* The loopback rx_mask is the pad tx_mask */
385a5c60	93	ret = axg_tdm_set_tdm_slots(asoc_rtd_to_cpu(rtd, 0), NULL, be->tx_mask,
7864a79f JB	94	be->slots, be->slot_width);
7864a79f JB	95	if (ret) {
385a5c60	96	dev_err(asoc_rtd_to_cpu(rtd, 0)->dev, "setting tdm link slots failed\n");
7864a79f JB	97	return ret;
	98	}
	99
	100	return 0;
	101	}
	102
	103	static int axg_card_add_tdm_loopback(struct snd_soc_card *card,
	104	int *index)
	105	{
aa9c3b72	106	struct meson_card *priv = snd_soc_card_get_drvdata(card);
7864a79f JB	107	struct snd_soc_dai_link pad = &card->dai_link[index];
7864a79f JB	108	struct snd_soc_dai_link *lb;
c84836d7	109	struct snd_soc_dai_link_component *dlc;
7864a79f JB	110	int ret;
	111
	112	/* extend links */
aa9c3b72	113	ret = meson_card_reallocate_links(card, card->num_links + 1);
7864a79f JB	114	if (ret)
	115	return ret;
	116
	117	lb = &card->dai_link[*index + 1];
	118
	119	lb->name = kasprintf(GFP_KERNEL, "%s-lb", pad->name);
	120	if (!lb->name)
	121	return -ENOMEM;
	122
c84836d7 KM	123	dlc = devm_kzalloc(card->dev, 2 * sizeof(*dlc), GFP_KERNEL);
	124	if (!dlc)
	125	return -ENOMEM;
	126
	127	lb->cpus = &dlc[0];
	128	lb->codecs = &dlc[1];
	129	lb->num_cpus = 1;
	130	lb->num_codecs = 1;
	131
7864a79f	132	lb->stream_name = lb->name;
c84836d7 KM	133	lb->cpus->of_node = pad->cpus->of_node;
	134	lb->cpus->dai_name = "TDM Loopback";
	135	lb->codecs->name = "snd-soc-dummy";
	136	lb->codecs->dai_name = "snd-soc-dummy-dai";
7864a79f JB	137	lb->dpcm_capture = 1;
	138	lb->no_pcm = 1;
	139	lb->ops = &axg_card_tdm_be_ops;
	140	lb->init = axg_card_tdm_dai_lb_init;
	141
	142	/* Provide the same link data to the loopback */
	143	priv->link_data[index + 1] = priv->link_data[index];
	144
	145	/*
	146	* axg_card_clean_references() will iterate over this link,
	147	* make sure the node count is balanced
	148	*/
c84836d7	149	of_node_get(lb->cpus->of_node);
7864a79f JB	150
	151	/* Let add_links continue where it should */
	152	*index += 1;
	153
	154	return 0;
	155	}
	156
7864a79f JB	157	static int axg_card_parse_cpu_tdm_slots(struct snd_soc_card *card,
	158	struct snd_soc_dai_link *link,
	159	struct device_node *node,
	160	struct axg_dai_link_tdm_data *be)
	161	{
	162	char propname[32];
	163	u32 tx, rx;
	164	int i;
	165
	166	be->tx_mask = devm_kcalloc(card->dev, AXG_TDM_NUM_LANES,
	167	sizeof(*be->tx_mask), GFP_KERNEL);
	168	be->rx_mask = devm_kcalloc(card->dev, AXG_TDM_NUM_LANES,
	169	sizeof(*be->rx_mask), GFP_KERNEL);
	170	if (!be->tx_mask \|\| !be->rx_mask)
	171	return -ENOMEM;
	172
	173	for (i = 0, tx = 0; i < AXG_TDM_NUM_LANES; i++) {
	174	snprintf(propname, 32, "dai-tdm-slot-tx-mask-%d", i);
	175	snd_soc_of_get_slot_mask(node, propname, &be->tx_mask[i]);
	176	tx = max(tx, be->tx_mask[i]);
	177	}
	178
	179	/* Disable playback is the interface has no tx slots */
	180	if (!tx)
	181	link->dpcm_playback = 0;
	182
	183	for (i = 0, rx = 0; i < AXG_TDM_NUM_LANES; i++) {
	184	snprintf(propname, 32, "dai-tdm-slot-rx-mask-%d", i);
	185	snd_soc_of_get_slot_mask(node, propname, &be->rx_mask[i]);
	186	rx = max(rx, be->rx_mask[i]);
	187	}
	188
	189	/* Disable capture is the interface has no rx slots */
	190	if (!rx)
	191	link->dpcm_capture = 0;
	192
	193	/* ... but the interface should at least have one of them */
	194	if (!tx && !rx) {
	195	dev_err(card->dev, "tdm link has no cpu slots\n");
	196	return -EINVAL;
	197	}
	198
	199	of_property_read_u32(node, "dai-tdm-slot-num", &be->slots);
	200	if (!be->slots) {
	201	/*
	202	* If the slot number is not provided, set it such as it
	203	* accommodates the largest mask
	204	*/
	205	be->slots = fls(max(tx, rx));
	206	} else if (be->slots < fls(max(tx, rx)) \|\| be->slots > 32) {
	207	/*
	208	* Error if the slots can't accommodate the largest mask or
	209	* if it is just too big
	210	*/
	211	dev_err(card->dev, "bad slot number\n");
	212	return -EINVAL;
	213	}
	214
	215	of_property_read_u32(node, "dai-tdm-slot-width", &be->slot_width);
	216
	217	return 0;
	218	}
	219
	220	static int axg_card_parse_codecs_masks(struct snd_soc_card *card,
221	struct snd_soc_dai_link *link,
222	struct device_node *node,
223	struct axg_dai_link_tdm_data *be)
224	{
225	struct axg_dai_link_tdm_mask *codec_mask;
226	struct device_node *np;
227
228	codec_mask = devm_kcalloc(card->dev, link->num_codecs,
229	sizeof(*codec_mask), GFP_KERNEL);
230	if (!codec_mask)
231	return -ENOMEM;
232
233	be->codec_masks = codec_mask;
234
235	for_each_child_of_node(node, np) {
236	snd_soc_of_get_slot_mask(np, "dai-tdm-slot-rx-mask",
237	&codec_mask->rx);
238	snd_soc_of_get_slot_mask(np, "dai-tdm-slot-tx-mask",
239	&codec_mask->tx);
240
241	codec_mask++;
242	}
243
244	return 0;
245	}
246
247	static int axg_card_parse_tdm(struct snd_soc_card *card,
248	struct device_node *node,
249	int *index)
250	{
aa9c3b72	251	struct meson_card *priv = snd_soc_card_get_drvdata(card);
7864a79f JB	252	struct snd_soc_dai_link link = &card->dai_link[index];
	253	struct axg_dai_link_tdm_data *be;
	254	int ret;
	255
	256	/* Allocate tdm link parameters */
	257	be = devm_kzalloc(card->dev, sizeof(*be), GFP_KERNEL);
	258	if (!be)
	259	return -ENOMEM;
	260	priv->link_data[*index] = be;
	261
	262	/* Setup tdm link */
	263	link->ops = &axg_card_tdm_be_ops;
	264	link->init = axg_card_tdm_dai_init;
aa9c3b72	265	link->dai_fmt = meson_card_parse_daifmt(node, link->cpus->of_node);
7864a79f JB	266
	267	of_property_read_u32(node, "mclk-fs", &be->mclk_fs);
	268
	269	ret = axg_card_parse_cpu_tdm_slots(card, link, node, be);
	270	if (ret) {
	271	dev_err(card->dev, "error parsing tdm link slots\n");
	272	return ret;
	273	}
	274
	275	ret = axg_card_parse_codecs_masks(card, link, node, be);
	276	if (ret)
	277	return ret;
	278
	279	/* Add loopback if the pad dai has playback */
	280	if (link->dpcm_playback) {
	281	ret = axg_card_add_tdm_loopback(card, index);
	282	if (ret)
	283	return ret;
	284	}
	285
	286	return 0;
	287	}
	288
7864a79f JB	289	static int axg_card_cpu_is_capture_fe(struct device_node *np)
7864a79f JB	290	{
aa9c3b72	291	return of_device_is_compatible(np, DT_PREFIX "axg-toddr");
7864a79f JB	292	}
	293
	294	static int axg_card_cpu_is_playback_fe(struct device_node *np)
	295	{
aa9c3b72	296	return of_device_is_compatible(np, DT_PREFIX "axg-frddr");
7864a79f JB	297	}
	298
	299	static int axg_card_cpu_is_tdm_iface(struct device_node *np)
	300	{
aa9c3b72	301	return of_device_is_compatible(np, DT_PREFIX "axg-tdm-iface");
7864a79f JB	302	}
7864a79f JB	303
0a8f1117 JB	304	static int axg_card_cpu_is_codec(struct device_node *np)
0a8f1117 JB	305	{
b38c4a8a JB	306	return of_device_is_compatible(np, DT_PREFIX "g12a-tohdmitx") \|\|
b38c4a8a JB	307	of_device_is_compatible(np, DT_PREFIX "g12a-toacodec");
0a8f1117 JB	308	}
0a8f1117 JB	309
7864a79f JB	310	static int axg_card_add_link(struct snd_soc_card card, struct device_node np,
	311	int *index)
	312	{
	313	struct snd_soc_dai_link dai_link = &card->dai_link[index];
c84836d7	314	struct snd_soc_dai_link_component *cpu;
7864a79f JB	315	int ret;
7864a79f JB	316
c84836d7 KM	317	cpu = devm_kzalloc(card->dev, sizeof(*cpu), GFP_KERNEL);
	318	if (!cpu)
	319	return -ENOMEM;
	320
	321	dai_link->cpus = cpu;
	322	dai_link->num_cpus = 1;
	323
aa9c3b72 JB	324	ret = meson_card_parse_dai(card, np, &dai_link->cpus->of_node,
aa9c3b72 JB	325	&dai_link->cpus->dai_name);
7864a79f JB	326	if (ret)
	327	return ret;
	328
c84836d7	329	if (axg_card_cpu_is_playback_fe(dai_link->cpus->of_node))
aa9c3b72	330	ret = meson_card_set_fe_link(card, dai_link, np, true);
c84836d7	331	else if (axg_card_cpu_is_capture_fe(dai_link->cpus->of_node))
aa9c3b72	332	ret = meson_card_set_fe_link(card, dai_link, np, false);
7864a79f	333	else
aa9c3b72	334	ret = meson_card_set_be_link(card, dai_link, np);
7864a79f JB	335
	336	if (ret)
	337	return ret;
	338
c84836d7	339	if (axg_card_cpu_is_tdm_iface(dai_link->cpus->of_node))
7864a79f	340	ret = axg_card_parse_tdm(card, np, index);
11642842	341	else if (axg_card_cpu_is_codec(dai_link->cpus->of_node)) {
0a8f1117	342	dai_link->params = &codec_params;
11642842 JB	343	dai_link->no_pcm = 0; /* link is not a DPCM BE */
11642842 JB	344	}
7864a79f JB	345
	346	return ret;
	347	}
	348
aa9c3b72 JB	349	static const struct meson_card_match_data axg_card_match_data = {
	350	.add_link = axg_card_add_link,
	351	};
7864a79f JB	352
7864a79f JB	353	static const struct of_device_id axg_card_of_match[] = {
aa9c3b72 JB	354	{
	355	.compatible = "amlogic,axg-sound-card",
	356	.data = &axg_card_match_data,
	357	}, {}
7864a79f JB	358	};
	359	MODULE_DEVICE_TABLE(of, axg_card_of_match);
	360
7864a79f	361	static struct platform_driver axg_card_pdrv = {
aa9c3b72 JB	362	.probe = meson_card_probe,
aa9c3b72 JB	363	.remove = meson_card_remove,
7864a79f JB	364	.driver = {
	365	.name = "axg-sound-card",
	366	.of_match_table = axg_card_of_match,
	367	},
	368	};
	369	module_platform_driver(axg_card_pdrv);
	370
	371	MODULE_DESCRIPTION("Amlogic AXG ALSA machine driver");
	372	MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
	373	MODULE_LICENSE("GPL v2");