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 struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card); 52 int ret; 53 54 ret = snd_soc_dapm_new_controls(dapm, cs35l41_dapm_widgets, 55 ARRAY_SIZE(cs35l41_dapm_widgets)); 56 if (ret) { 57 dev_err(rtd->dev, "fail to add dapm controls, ret %d\n", ret); 58 return ret; 59 } 60 61 ret = snd_soc_add_card_controls(card, cs35l41_kcontrols, 62 ARRAY_SIZE(cs35l41_kcontrols)); 63 if (ret) { 64 dev_err(rtd->dev, "fail to add card controls, ret %d\n", ret); 65 return ret; 66 } 67 68 ret = snd_soc_dapm_add_routes(dapm, cs35l41_dapm_routes, 69 ARRAY_SIZE(cs35l41_dapm_routes)); 70 71 if (ret) 72 dev_err(rtd->dev, "fail to add dapm routes, ret %d\n", ret); 73 74 return ret; 75 } 76 77 /* 78 * Channel map: 79 * 80 * TL/WL: ASPRX1 on slot 0, ASPRX2 on slot 1 (default) 81 * TR/WR: ASPRX1 on slot 1, ASPRX2 on slot 0 82 */ 83 static const struct { 84 unsigned int rx[2]; 85 } cs35l41_channel_map[] = { 86 {.rx = {0, 1}}, /* WL */ 87 {.rx = {1, 0}}, /* WR */ 88 {.rx = {0, 1}}, /* TL */ 89 {.rx = {1, 0}}, /* TR */ 90 }; 91 92 static int cs35l41_hw_params(struct snd_pcm_substream *substream, 93 struct snd_pcm_hw_params *params) 94 { 95 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 96 struct snd_soc_dai *codec_dai; 97 int clk_freq, i, ret; 98 99 clk_freq = sof_dai_get_bclk(rtd); /* BCLK freq */ 100 101 if (clk_freq <= 0) { 102 dev_err(rtd->dev, "fail to get bclk freq, ret %d\n", clk_freq); 103 return -EINVAL; 104 } 105 106 for_each_rtd_codec_dais(rtd, i, codec_dai) { 107 /* call dai driver's set_sysclk() callback */ 108 ret = snd_soc_dai_set_sysclk(codec_dai, CS35L41_CLKID_SCLK, 109 clk_freq, SND_SOC_CLOCK_IN); 110 if (ret < 0) { 111 dev_err(codec_dai->dev, "fail to set sysclk, ret %d\n", 112 ret); 113 return ret; 114 } 115 116 /* call component driver's set_sysclk() callback */ 117 ret = snd_soc_component_set_sysclk(codec_dai->component, 118 CS35L41_CLKID_SCLK, 0, 119 clk_freq, SND_SOC_CLOCK_IN); 120 if (ret < 0) { 121 dev_err(codec_dai->dev, "fail to set component sysclk, ret %d\n", 122 ret); 123 return ret; 124 } 125 126 /* setup channel map */ 127 ret = snd_soc_dai_set_channel_map(codec_dai, 0, NULL, 128 ARRAY_SIZE(cs35l41_channel_map[i].rx), 129 (unsigned int *)cs35l41_channel_map[i].rx); 130 if (ret < 0) { 131 dev_err(codec_dai->dev, "fail to set channel map, ret %d\n", 132 ret); 133 return ret; 134 } 135 } 136 137 return 0; 138 } 139 140 static const struct snd_soc_ops cs35l41_ops = { 141 .hw_params = cs35l41_hw_params, 142 }; 143 144 static const char * const cs35l41_name_prefixes[] = { "WL", "WR", "TL", "TR" }; 145 146 /* 147 * Expected UIDs are integers (stored as strings). 148 * UID Mapping is fixed: 149 * UID 0x0 -> WL 150 * UID 0x1 -> WR 151 * UID 0x2 -> TL 152 * UID 0x3 -> TR 153 * Note: If there are less than 4 Amps, UIDs still map to WL/WR/TL/TR. Dynamic code will only create 154 * dai links for UIDs which exist, and ignore non-existant ones. Only 2 or 4 amps are expected. 155 * Return number of codecs found. 156 */ 157 static int cs35l41_compute_codec_conf(void) 158 { 159 static const char * const uid_strings[] = { "0", "1", "2", "3" }; 160 unsigned int uid, sz = 0; 161 struct acpi_device *adev; 162 struct device *physdev; 163 164 for (uid = 0; uid < CS35L41_MAX_AMPS; uid++) { 165 adev = acpi_dev_get_first_match_dev(CS35L41_HID, uid_strings[uid], -1); 166 if (!adev) { 167 pr_devel("Cannot find match for HID %s UID %u (%s)\n", CS35L41_HID, uid, 168 cs35l41_name_prefixes[uid]); 169 continue; 170 } 171 physdev = get_device(acpi_get_first_physical_node(adev)); 172 acpi_dev_put(adev); 173 if (!physdev) { 174 pr_devel("Cannot find physical node for HID %s UID %u (%s)\n", CS35L41_HID, 175 uid, cs35l41_name_prefixes[uid]); 176 return 0; 177 } 178 cs35l41_components[sz].name = dev_name(physdev); 179 cs35l41_components[sz].dai_name = CS35L41_CODEC_DAI; 180 cs35l41_codec_conf[sz].dlc.name = dev_name(physdev); 181 cs35l41_codec_conf[sz].name_prefix = cs35l41_name_prefixes[uid]; 182 sz++; 183 } 184 185 if (sz != 2 && sz != 4) 186 pr_warn("Invalid number of cs35l41 amps found: %d, expected 2 or 4\n", sz); 187 return sz; 188 } 189 190 void cs35l41_set_dai_link(struct snd_soc_dai_link *link) 191 { 192 link->num_codecs = cs35l41_compute_codec_conf(); 193 link->codecs = cs35l41_components; 194 link->init = cs35l41_init; 195 link->ops = &cs35l41_ops; 196 } 197 EXPORT_SYMBOL_NS(cs35l41_set_dai_link, "SND_SOC_INTEL_SOF_CIRRUS_COMMON"); 198 199 void cs35l41_set_codec_conf(struct snd_soc_card *card) 200 { 201 card->codec_conf = cs35l41_codec_conf; 202 card->num_configs = ARRAY_SIZE(cs35l41_codec_conf); 203 } 204 EXPORT_SYMBOL_NS(cs35l41_set_codec_conf, "SND_SOC_INTEL_SOF_CIRRUS_COMMON"); 205 206 MODULE_DESCRIPTION("ASoC Intel SOF Cirrus Logic helpers"); 207 MODULE_LICENSE("GPL"); 208