1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * This file defines data structures and functions used in Machine 4 * 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 4 15 16 /* 17 * Cirrus Logic CS35L41/CS35L53 18 */ 19 static 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 26 static 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 33 static 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 41 static struct snd_soc_dai_link_component cs35l41_components[CS35L41_MAX_AMPS]; 42 43 /* 44 * Mapping between ACPI instance id and speaker position. 45 */ 46 static struct snd_soc_codec_conf cs35l41_codec_conf[CS35L41_MAX_AMPS]; 47 48 static 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 0 81 */ 82 static 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 91 static 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 } 138 139 static const struct snd_soc_ops cs35l41_ops = { 140 .hw_params = cs35l41_hw_params, 141 }; 142 143 static 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 -> WL 149 * UID 0x1 -> WR 150 * UID 0x2 -> TL 151 * UID 0x3 -> TR 152 * Note: If there are less than 4 Amps, UIDs still map to WL/WR/TL/TR. Dynamic code will only create 153 * 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 */ 156 static 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 } 188 189 void 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 } 196 EXPORT_SYMBOL_NS(cs35l41_set_dai_link, SND_SOC_INTEL_SOF_CIRRUS_COMMON); 197 198 void 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 } 203 EXPORT_SYMBOL_NS(cs35l41_set_codec_conf, SND_SOC_INTEL_SOF_CIRRUS_COMMON); 204 205 MODULE_DESCRIPTION("ASoC Intel SOF Cirrus Logic helpers"); 206 MODULE_LICENSE("GPL"); 207