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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * This file defines data structures and functions used in Machine4 * Driver for Intel platforms with Cirrus Logic Codecs.5 *6 * Copyright 2022 Intel Corporation.7 */8#include <linux/module.h>9#include <sound/sof.h>10#include "../../codecs/cs35l41.h"11#include "sof_cirrus_common.h"12 13#define CS35L41_HID "CSC3541"14#define CS35L41_MAX_AMPS 415 16/*17 * Cirrus Logic CS35L41/CS35L5318 */19static const struct snd_kcontrol_new cs35l41_kcontrols[] = {20	SOC_DAPM_PIN_SWITCH("WL Spk"),21	SOC_DAPM_PIN_SWITCH("WR Spk"),22	SOC_DAPM_PIN_SWITCH("TL Spk"),23	SOC_DAPM_PIN_SWITCH("TR Spk"),24};25 26static const struct snd_soc_dapm_widget cs35l41_dapm_widgets[] = {27	SND_SOC_DAPM_SPK("WL Spk", NULL),28	SND_SOC_DAPM_SPK("WR Spk", NULL),29	SND_SOC_DAPM_SPK("TL Spk", NULL),30	SND_SOC_DAPM_SPK("TR Spk", NULL),31};32 33static const struct snd_soc_dapm_route cs35l41_dapm_routes[] = {34	/* speaker */35	{"WL Spk", NULL, "WL SPK"},36	{"WR Spk", NULL, "WR SPK"},37	{"TL Spk", NULL, "TL SPK"},38	{"TR Spk", NULL, "TR SPK"},39};40 41static struct snd_soc_dai_link_component cs35l41_components[CS35L41_MAX_AMPS];42 43/*44 * Mapping between ACPI instance id and speaker position.45 */46static struct snd_soc_codec_conf cs35l41_codec_conf[CS35L41_MAX_AMPS];47 48static int cs35l41_init(struct snd_soc_pcm_runtime *rtd)49{50	struct snd_soc_card *card = rtd->card;51	int ret;52 53	ret = snd_soc_dapm_new_controls(&card->dapm, cs35l41_dapm_widgets,54					ARRAY_SIZE(cs35l41_dapm_widgets));55	if (ret) {56		dev_err(rtd->dev, "fail to add dapm controls, ret %d\n", ret);57		return ret;58	}59 60	ret = snd_soc_add_card_controls(card, cs35l41_kcontrols,61					ARRAY_SIZE(cs35l41_kcontrols));62	if (ret) {63		dev_err(rtd->dev, "fail to add card controls, ret %d\n", ret);64		return ret;65	}66 67	ret = snd_soc_dapm_add_routes(&card->dapm, cs35l41_dapm_routes,68				      ARRAY_SIZE(cs35l41_dapm_routes));69 70	if (ret)71		dev_err(rtd->dev, "fail to add dapm routes, ret %d\n", ret);72 73	return ret;74}75 76/*77 * Channel map:78 *79 * TL/WL: ASPRX1 on slot 0, ASPRX2 on slot 1 (default)80 * TR/WR: ASPRX1 on slot 1, ASPRX2 on slot 081 */82static const struct {83	unsigned int rx[2];84} cs35l41_channel_map[] = {85	{.rx = {0, 1}}, /* WL */86	{.rx = {1, 0}}, /* WR */87	{.rx = {0, 1}}, /* TL */88	{.rx = {1, 0}}, /* TR */89};90 91static int cs35l41_hw_params(struct snd_pcm_substream *substream,92			     struct snd_pcm_hw_params *params)93{94	struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);95	struct snd_soc_dai *codec_dai;96	int clk_freq, i, ret;97 98	clk_freq = sof_dai_get_bclk(rtd); /* BCLK freq */99 100	if (clk_freq <= 0) {101		dev_err(rtd->dev, "fail to get bclk freq, ret %d\n", clk_freq);102		return -EINVAL;103	}104 105	for_each_rtd_codec_dais(rtd, i, codec_dai) {106		/* call dai driver's set_sysclk() callback */107		ret = snd_soc_dai_set_sysclk(codec_dai, CS35L41_CLKID_SCLK,108					     clk_freq, SND_SOC_CLOCK_IN);109		if (ret < 0) {110			dev_err(codec_dai->dev, "fail to set sysclk, ret %d\n",111				ret);112			return ret;113		}114 115		/* call component driver's set_sysclk() callback */116		ret = snd_soc_component_set_sysclk(codec_dai->component,117						   CS35L41_CLKID_SCLK, 0,118						   clk_freq, SND_SOC_CLOCK_IN);119		if (ret < 0) {120			dev_err(codec_dai->dev, "fail to set component sysclk, ret %d\n",121				ret);122			return ret;123		}124 125		/* setup channel map */126		ret = snd_soc_dai_set_channel_map(codec_dai, 0, NULL,127						  ARRAY_SIZE(cs35l41_channel_map[i].rx),128						  (unsigned int *)cs35l41_channel_map[i].rx);129		if (ret < 0) {130			dev_err(codec_dai->dev, "fail to set channel map, ret %d\n",131				ret);132			return ret;133		}134	}135 136	return 0;137}138 139static const struct snd_soc_ops cs35l41_ops = {140	.hw_params = cs35l41_hw_params,141};142 143static const char * const cs35l41_name_prefixes[] = { "WL", "WR", "TL", "TR" };144 145/*146 * Expected UIDs are integers (stored as strings).147 * UID Mapping is fixed:148 * UID 0x0 -> WL149 * UID 0x1 -> WR150 * UID 0x2 -> TL151 * UID 0x3 -> TR152 * Note: If there are less than 4 Amps, UIDs still map to WL/WR/TL/TR. Dynamic code will only create153 * dai links for UIDs which exist, and ignore non-existant ones. Only 2 or 4 amps are expected.154 * Return number of codecs found.155 */156static int cs35l41_compute_codec_conf(void)157{158	static const char * const uid_strings[] = { "0", "1", "2", "3" };159	unsigned int uid, sz = 0;160	struct acpi_device *adev;161	struct device *physdev;162 163	for (uid = 0; uid < CS35L41_MAX_AMPS; uid++) {164		adev = acpi_dev_get_first_match_dev(CS35L41_HID, uid_strings[uid], -1);165		if (!adev) {166			pr_devel("Cannot find match for HID %s UID %u (%s)\n", CS35L41_HID, uid,167				 cs35l41_name_prefixes[uid]);168			continue;169		}170		physdev = get_device(acpi_get_first_physical_node(adev));171		acpi_dev_put(adev);172		if (!physdev) {173			pr_devel("Cannot find physical node for HID %s UID %u (%s)\n", CS35L41_HID,174					uid, cs35l41_name_prefixes[uid]);175			return 0;176		}177		cs35l41_components[sz].name = dev_name(physdev);178		cs35l41_components[sz].dai_name = CS35L41_CODEC_DAI;179		cs35l41_codec_conf[sz].dlc.name = dev_name(physdev);180		cs35l41_codec_conf[sz].name_prefix = cs35l41_name_prefixes[uid];181		sz++;182	}183 184	if (sz != 2 && sz != 4)185		pr_warn("Invalid number of cs35l41 amps found: %d, expected 2 or 4\n", sz);186	return sz;187}188 189void cs35l41_set_dai_link(struct snd_soc_dai_link *link)190{191	link->num_codecs = cs35l41_compute_codec_conf();192	link->codecs = cs35l41_components;193	link->init = cs35l41_init;194	link->ops = &cs35l41_ops;195}196EXPORT_SYMBOL_NS(cs35l41_set_dai_link, SND_SOC_INTEL_SOF_CIRRUS_COMMON);197 198void cs35l41_set_codec_conf(struct snd_soc_card *card)199{200	card->codec_conf = cs35l41_codec_conf;201	card->num_configs = ARRAY_SIZE(cs35l41_codec_conf);202}203EXPORT_SYMBOL_NS(cs35l41_set_codec_conf, SND_SOC_INTEL_SOF_CIRRUS_COMMON);204 205MODULE_DESCRIPTION("ASoC Intel SOF Cirrus Logic helpers");206MODULE_LICENSE("GPL");207