1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) 2 // 3 // This file is provided under a dual BSD/GPLv2 license. When using or 4 // redistributing this file, you may do so under either license. 5 // 6 // Copyright(c) 2018 Intel Corporation. All rights reserved. 7 // 8 // Authors: Keyon Jie <yang.jie@linux.intel.com> 9 // 10 11 #include <linux/module.h> 12 #include <sound/hdaudio_ext.h> 13 #include <sound/hda_register.h> 14 #include <sound/hda_codec.h> 15 #include <sound/hda_i915.h> 16 #include <sound/sof.h> 17 #include "../ops.h" 18 #include "hda.h" 19 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 20 #include "../../codecs/hdac_hda.h" 21 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ 22 23 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 24 #define IDISP_VID_INTEL 0x80860000 25 26 /* load the legacy HDA codec driver */ 27 static int hda_codec_load_module(struct hda_codec *codec) 28 { 29 #ifdef MODULE 30 char alias[MODULE_NAME_LEN]; 31 const char *module = alias; 32 33 snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias)); 34 dev_dbg(&codec->core.dev, "loading codec module: %s\n", module); 35 request_module(module); 36 #endif 37 return device_attach(hda_codec_dev(codec)); 38 } 39 40 /* enable controller wake up event for all codecs with jack connectors */ 41 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) 42 { 43 struct hda_bus *hbus = sof_to_hbus(sdev); 44 struct hdac_bus *bus = sof_to_bus(sdev); 45 struct hda_codec *codec; 46 unsigned int mask = 0; 47 48 list_for_each_codec(codec, hbus) 49 if (codec->jacktbl.used) 50 mask |= BIT(codec->core.addr); 51 52 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask); 53 } 54 55 /* check jack status after resuming from suspend mode */ 56 void hda_codec_jack_check(struct snd_sof_dev *sdev) 57 { 58 struct hda_bus *hbus = sof_to_hbus(sdev); 59 struct hdac_bus *bus = sof_to_bus(sdev); 60 struct hda_codec *codec; 61 62 /* disable controller Wake Up event*/ 63 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, 0); 64 65 list_for_each_codec(codec, hbus) 66 /* 67 * Wake up all jack-detecting codecs regardless whether an event 68 * has been recorded in STATESTS 69 */ 70 if (codec->jacktbl.used) 71 schedule_delayed_work(&codec->jackpoll_work, 72 codec->jackpoll_interval); 73 } 74 #else 75 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {} 76 void hda_codec_jack_check(struct snd_sof_dev *sdev) {} 77 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ 78 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC); 79 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC); 80 81 /* probe individual codec */ 82 static int hda_codec_probe(struct snd_sof_dev *sdev, int address, 83 bool hda_codec_use_common_hdmi) 84 { 85 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 86 struct hdac_hda_priv *hda_priv; 87 #endif 88 struct hda_bus *hbus = sof_to_hbus(sdev); 89 struct hdac_device *hdev; 90 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) | 91 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; 92 u32 resp = -1; 93 int ret; 94 95 mutex_lock(&hbus->core.cmd_mutex); 96 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd); 97 snd_hdac_bus_get_response(&hbus->core, address, &resp); 98 mutex_unlock(&hbus->core.cmd_mutex); 99 if (resp == -1) 100 return -EIO; 101 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n", 102 address, resp); 103 104 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 105 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL); 106 if (!hda_priv) 107 return -ENOMEM; 108 109 hda_priv->codec.bus = hbus; 110 hdev = &hda_priv->codec.core; 111 112 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev); 113 if (ret < 0) 114 return ret; 115 116 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) { 117 if (!hdev->bus->audio_component) { 118 dev_dbg(sdev->dev, 119 "iDisp hw present but no driver\n"); 120 return -ENOENT; 121 } 122 hda_priv->need_display_power = true; 123 } 124 125 /* 126 * if common HDMI codec driver is not used, codec load 127 * is skipped here and hdac_hdmi is used instead 128 */ 129 if (hda_codec_use_common_hdmi || 130 (resp & 0xFFFF0000) != IDISP_VID_INTEL) { 131 hdev->type = HDA_DEV_LEGACY; 132 ret = hda_codec_load_module(&hda_priv->codec); 133 /* 134 * handle ret==0 (no driver bound) as an error, but pass 135 * other return codes without modification 136 */ 137 if (ret == 0) 138 ret = -ENOENT; 139 } 140 141 return ret; 142 #else 143 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); 144 if (!hdev) 145 return -ENOMEM; 146 147 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev); 148 149 return ret; 150 #endif 151 } 152 153 /* Codec initialization */ 154 void hda_codec_probe_bus(struct snd_sof_dev *sdev, 155 bool hda_codec_use_common_hdmi) 156 { 157 struct hdac_bus *bus = sof_to_bus(sdev); 158 int i, ret; 159 160 /* probe codecs in avail slots */ 161 for (i = 0; i < HDA_MAX_CODECS; i++) { 162 163 if (!(bus->codec_mask & (1 << i))) 164 continue; 165 166 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi); 167 if (ret < 0) { 168 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n", 169 i, ret); 170 bus->codec_mask &= ~BIT(i); 171 } 172 } 173 } 174 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC); 175 176 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \ 177 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 178 179 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable) 180 { 181 struct hdac_bus *bus = sof_to_bus(sdev); 182 183 if (HDA_IDISP_CODEC(bus->codec_mask)) { 184 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable); 185 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable); 186 } 187 } 188 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 189 190 int hda_codec_i915_init(struct snd_sof_dev *sdev) 191 { 192 struct hdac_bus *bus = sof_to_bus(sdev); 193 int ret; 194 195 /* i915 exposes a HDA codec for HDMI audio */ 196 ret = snd_hdac_i915_init(bus); 197 if (ret < 0) 198 return ret; 199 200 /* codec_mask not yet known, power up for probe */ 201 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 202 203 return 0; 204 } 205 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 206 207 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 208 { 209 struct hdac_bus *bus = sof_to_bus(sdev); 210 int ret; 211 212 if (!bus->audio_component) 213 return 0; 214 215 /* power down unconditionally */ 216 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 217 218 ret = snd_hdac_i915_exit(bus); 219 220 return ret; 221 } 222 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 223 224 #endif 225 226 MODULE_LICENSE("Dual BSD/GPL"); 227