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// SPDX-License-Identifier: GPL-2.0-only
// Copyright (c) 2020 Intel Corporation
/*
* sof_sdw_rt1308 - Helpers to handle RT1308 from generic machine driver
*/
#include <linux/device.h>
#include <linux/errno.h>
#include <sound/control.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include <sound/soc-dapm.h>
#include "sof_sdw_common.h"
#include "../../codecs/rt1308.h"
static const struct snd_soc_dapm_widget rt1308_widgets[] = {
SND_SOC_DAPM_SPK("Speaker", NULL),
};
/*
* dapm routes for rt1308 will be registered dynamically according
* to the number of rt1308 used. The first two entries will be registered
* for one codec case, and the last two entries are also registered
* if two 1308s are used.
*/
static const struct snd_soc_dapm_route rt1308_map[] = {
{ "Speaker", NULL, "rt1308-1 SPOL" },
{ "Speaker", NULL, "rt1308-1 SPOR" },
{ "Speaker", NULL, "rt1308-2 SPOL" },
{ "Speaker", NULL, "rt1308-2 SPOR" },
};
static const struct snd_kcontrol_new rt1308_controls[] = {
SOC_DAPM_PIN_SWITCH("Speaker"),
};
static int first_spk_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
int ret;
card->components = devm_kasprintf(card->dev, GFP_KERNEL,
"%s spk:rt1308",
card->components);
if (!card->components)
return -ENOMEM;
ret = snd_soc_add_card_controls(card, rt1308_controls,
ARRAY_SIZE(rt1308_controls));
if (ret) {
dev_err(card->dev, "rt1308 controls addition failed: %d\n", ret);
return ret;
}
ret = snd_soc_dapm_new_controls(&card->dapm, rt1308_widgets,
ARRAY_SIZE(rt1308_widgets));
if (ret) {
dev_err(card->dev, "rt1308 widgets addition failed: %d\n", ret);
return ret;
}
ret = snd_soc_dapm_add_routes(&card->dapm, rt1308_map, 2);
if (ret)
dev_err(rtd->dev, "failed to add first SPK map: %d\n", ret);
return ret;
}
static int second_spk_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
int ret;
ret = snd_soc_dapm_add_routes(&card->dapm, rt1308_map + 2, 2);
if (ret)
dev_err(rtd->dev, "failed to add second SPK map: %d\n", ret);
return ret;
}
static int all_spk_init(struct snd_soc_pcm_runtime *rtd)
{
int ret;
ret = first_spk_init(rtd);
if (ret)
return ret;
return second_spk_init(rtd);
}
static int rt1308_i2s_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_card *card = rtd->card;
struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
int clk_id, clk_freq, pll_out;
int err;
clk_id = RT1308_PLL_S_MCLK;
clk_freq = 38400000;
pll_out = params_rate(params) * 512;
/* Set rt1308 pll */
err = snd_soc_dai_set_pll(codec_dai, 0, clk_id, clk_freq, pll_out);
if (err < 0) {
dev_err(card->dev, "Failed to set RT1308 PLL: %d\n", err);
return err;
}
/* Set rt1308 sysclk */
err = snd_soc_dai_set_sysclk(codec_dai, RT1308_FS_SYS_S_PLL, pll_out,
SND_SOC_CLOCK_IN);
if (err < 0) {
dev_err(card->dev, "Failed to set RT1308 SYSCLK: %d\n", err);
return err;
}
return 0;
}
/* machine stream operations */
struct snd_soc_ops sof_sdw_rt1308_i2s_ops = {
.hw_params = rt1308_i2s_hw_params,
};
int sof_sdw_rt1308_init(const struct snd_soc_acpi_link_adr *link,
struct snd_soc_dai_link *dai_links,
struct sof_sdw_codec_info *info,
bool playback)
{
/* Count amp number and do init on playback link only. */
if (!playback)
return 0;
info->amp_num++;
if (info->amp_num == 1)
dai_links->init = first_spk_init;
if (info->amp_num == 2) {
/*
* if two 1308s are in one dai link, the init function
* in this dai link will be first set for the first speaker,
* and it should be reset to initialize all speakers when
* the second speaker is found.
*/
if (dai_links->init)
dai_links->init = all_spk_init;
else
dai_links->init = second_spk_init;
}
return 0;
}
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