path: root/sound/soc/generic/simple-card-utils.c

// SPDX-License-Identifier: GPL-2.0
//
// simple-card-utils.c
//
// Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

#include <dt-bindings/sound/audio-graph.h>
#include <linux/cleanup.h>
#include <linux/clk.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <sound/jack.h>
#include <sound/pcm_params.h>
#include <sound/simple_card_utils.h>

#define simple_ret(priv, ret) _simple_ret(priv, __func__, ret)
static inline int _simple_ret(struct simple_util_priv *priv,
			      const char *func, int ret)
{
	return snd_soc_ret(simple_priv_to_dev(priv), ret, "at %s()\n", func);
}

int simple_util_get_sample_fmt(struct simple_util_data *data)
{
	int i;
	int val = -EINVAL;

	struct {
		char *fmt;
		u32 val;
	} of_sample_fmt_table[] = {
		{ "s8",		SNDRV_PCM_FORMAT_S8},
		{ "s16_le",	SNDRV_PCM_FORMAT_S16_LE},
		{ "s24_le",	SNDRV_PCM_FORMAT_S24_LE},
		{ "s24_3le",	SNDRV_PCM_FORMAT_S24_3LE},
		{ "s32_le",	SNDRV_PCM_FORMAT_S32_LE},
	};

	for (i = 0; i < ARRAY_SIZE(of_sample_fmt_table); i++) {
		if (!strcmp(data->convert_sample_format,
			    of_sample_fmt_table[i].fmt)) {
			val = of_sample_fmt_table[i].val;
			break;
		}
	}
	return val;
}
EXPORT_SYMBOL_GPL(simple_util_get_sample_fmt);

static void simple_fixup_sample_fmt(struct simple_util_data *data,
				    struct snd_pcm_hw_params *params)
{
	int val;
	struct snd_mask *mask = hw_param_mask(params,
					      SNDRV_PCM_HW_PARAM_FORMAT);

	val = simple_util_get_sample_fmt(data);
	if (val >= 0) {
		snd_mask_none(mask);
		snd_mask_set(mask, val);
	}
}

void simple_util_parse_convert(struct device_node *np,
			       char *prefix,
			       struct simple_util_data *data)
{
	char prop[128];

	if (!np)
		return;

	if (!prefix)
		prefix = "";

	/* sampling rate convert */
	snprintf(prop, sizeof(prop), "%s%s", prefix, "convert-rate");
	of_property_read_u32(np, prop, &data