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// SPDX-License-Identifier: GPL-2.0-only
/*
* This file defines data structures and functions used in Machine
* Driver for Intel platforms with Cirrus Logic Codecs.
*
* Copyright 2022 Intel Corporation.
*/
#include <linux/module.h>
#include <sound/sof.h>
#include "../../codecs/cs35l41.h"
#include "sof_cirrus_common.h"
#define CS35L41_HID "CSC3541"
#define CS35L41_MAX_AMPS 4
/*
* Cirrus Logic CS35L41/CS35L53
*/
static const struct snd_kcontrol_new cs35l41_kcontrols[] = {
SOC_DAPM_PIN_SWITCH("WL Spk"),
SOC_DAPM_PIN_SWITCH("WR Spk"),
SOC_DAPM_PIN_SWITCH("TL Spk"),
SOC_DAPM_PIN_SWITCH("TR Spk"),
};
static const struct snd_soc_dapm_widget cs35l41_dapm_widgets[] = {
SND_SOC_DAPM_SPK("WL Spk", NULL),
SND_SOC_DAPM_SPK("WR Spk", NULL),
SND_SOC_DAPM_SPK("TL Spk", NULL),
SND_SOC_DAPM_SPK("TR Spk", NULL),
};
static const struct snd_soc_dapm_route cs35l41_dapm_routes[] = {
/* speaker */
{"WL Spk", NULL, "WL SPK"},
{"WR Spk", NULL, "WR SPK"},
{"TL Spk", NULL, "TL SPK"},
{"TR Spk", NULL, "TR SPK"},
};
static struct snd_soc_dai_link_component cs35l41_components[CS35L41_MAX_AMPS];
/*
* Mapping between ACPI instance id and speaker position.
*/
static struct snd_soc_codec_conf cs35l41_codec_conf[CS35L41_MAX_AMPS];
static int cs35l41_init(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_card *card = rtd->card;
int ret;
ret = snd_soc_dapm_new_controls(&card->dapm, cs35l41_dapm_widgets,
ARRAY_SIZE(cs35l41_dapm_widgets));
if (ret) {
dev_err(rtd->dev, "fail to add dapm controls, ret %d\n", ret);
return ret;
}
ret = snd_soc_add_card_controls(card, cs35l41_kcontrols,
ARRAY_SIZE(cs35l41_kcontrols));
if (ret) {
dev_err(rtd->dev, "fail to add card controls, ret %d\n", ret);
return ret;
}
ret = snd_soc_dapm_add_routes(&card->dapm, cs35l41_dapm_routes,
ARRAY_SIZE(cs35l41_dapm_routes));
if (ret)
dev_err(rtd->dev, "fail to add dapm routes, ret %d\n", ret);
return ret;
}
/*
* Channel map:
*
* TL/WL: ASPRX1 on slot 0, ASPRX2 on slot 1 (default)
* TR/WR: ASPRX1 on slot 1, ASPRX2 on slot 0
*/
static const struct {
unsigned int rx[2];
} cs35l41_channel_map[] = {
{.rx = {0, 1}}, /* WL */
{.rx = {1, 0}}, /* WR */
{.rx = {0, 1}}, /* TL */
{.rx = {1, 0}}, /* TR */
};
static int cs35l41_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_dai *codec_dai;
int clk_freq, i, ret;
clk_freq = sof_dai_get_bclk(rtd); /* BCLK freq */
if (clk_freq <= 0) {
dev_err(rtd->dev, "fail to get bclk freq, ret %d\n", clk_freq);
return -EINVAL;
}
for_each_rtd_codec_dais(rtd, i, codec_dai) {
/* call dai driver's set_sysclk() callback */
ret = snd_soc_dai_set_sysclk(codec_dai, CS35L41_CLKID_SCLK,
clk_freq, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(codec_dai->dev, "fail to set sysclk, ret %d\n",
ret);
return ret;
}
/* call component driver's set_sysclk() callback */
ret = snd_soc_component_set_sysclk(codec_dai->component,
CS35L41_CLKID_SCLK, 0,
clk_freq, SND_SOC_CLOCK_IN);
if (ret < 0) {
dev_err(codec_dai->dev, "fail to set component sysclk, ret %d\n",
ret);
return ret;
}
/* setup channel map */
ret = snd_soc_dai_set_channel_map(codec_dai, 0, NULL,
ARRAY_SIZE(cs35l41_channel_map[i].rx),
(unsigned int *)cs35l41_channel_map[i].rx);
if (ret < 0) {
dev_err(codec_dai->dev, "fail to set channel map, ret %d\n",
ret);
return ret;
}
}
return 0;
}
static const struct snd_soc_ops cs35l41_ops = {
.hw_params = cs35l41_hw_params,
};
static const char * const cs35l41_name_prefixes[] = { "WL", "WR", "TL", "TR" };
/*
* Expected UIDs are integers (stored as strings).
* UID Mapping is fixed:
* UID 0x0 -> WL
* UID 0x1 -> WR
* UID 0x2 -> TL
* UID 0x3 -> TR
* Note: If there are less than 4 Amps, UIDs still map to WL/WR/TL/TR. Dynamic code will only create
* dai links for UIDs which exist, and ignore non-existant ones. Only 2 or 4 amps are expected.
* Return number of codecs found.
*/
static int cs35l41_compute_codec_conf(void)
{
const char * const uid_strings[] = { "0", "1", "2", "3" };
unsigned int uid, sz = 0;
struct acpi_device *adev;
struct device *physdev;
for (uid = 0; uid < CS35L41_MAX_AMPS; uid++) {
adev = acpi_dev_get_first_match_dev(CS35L41_HID, uid_strings[uid], -1);
if (!adev) {
pr_devel("Cannot find match for HID %s UID %u (%s)\n", CS35L41_HID, uid,
cs35l41_name_prefixes[uid]);
continue;
}
physdev = get_device(acpi_get_first_physical_node(adev));
cs35l41_components[sz].name = dev_name(physdev);
cs35l41_components[sz].dai_name = CS35L41_CODEC_DAI;
cs35l41_codec_conf[sz].dlc.name = dev_name(physdev);
cs35l41_codec_conf[sz].name_prefix = cs35l41_name_prefixes[uid];
acpi_dev_put(adev);
sz++;
}
if (sz != 2 && sz != 4)
pr_warn("Invalid number of cs35l41 amps found: %d, expected 2 or 4\n", sz);
return sz;
}
void cs35l41_set_dai_link(struct snd_soc_dai_link *link)
{
link->num_codecs = cs35l41_compute_codec_conf();
link->codecs = cs35l41_components;
link->init = cs35l41_init;
link->ops = &cs35l41_ops;
}
EXPORT_SYMBOL_NS(cs35l41_set_dai_link, SND_SOC_INTEL_SOF_CIRRUS_COMMON);
void cs35l41_set_codec_conf(struct snd_soc_card *card)
{
card->codec_conf = cs35l41_codec_conf;
card->num_configs = ARRAY_SIZE(cs35l41_codec_conf);
}
EXPORT_SYMBOL_NS(cs35l41_set_codec_conf, SND_SOC_INTEL_SOF_CIRRUS_COMMON);
MODULE_DESCRIPTION("ASoC Intel SOF Cirrus Logic helpers");
MODULE_LICENSE("GPL");
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