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 hda_priv->need_display_power = true; 118 119 /* 120 * if common HDMI codec driver is not used, codec load 121 * is skipped here and hdac_hdmi is used instead 122 */ 123 if (hda_codec_use_common_hdmi || 124 (resp & 0xFFFF0000) != IDISP_VID_INTEL) { 125 hdev->type = HDA_DEV_LEGACY; 126 ret = hda_codec_load_module(&hda_priv->codec); 127 /* 128 * handle ret==0 (no driver bound) as an error, but pass 129 * other return codes without modification 130 */ 131 if (ret == 0) 132 ret = -ENOENT; 133 } 134 135 return ret; 136 #else 137 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); 138 if (!hdev) 139 return -ENOMEM; 140 141 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev); 142 143 return ret; 144 #endif 145 } 146 147 /* Codec initialization */ 148 void hda_codec_probe_bus(struct snd_sof_dev *sdev, 149 bool hda_codec_use_common_hdmi) 150 { 151 struct hdac_bus *bus = sof_to_bus(sdev); 152 int i, ret; 153 154 /* probe codecs in avail slots */ 155 for (i = 0; i < HDA_MAX_CODECS; i++) { 156 157 if (!(bus->codec_mask & (1 << i))) 158 continue; 159 160 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi); 161 if (ret < 0) { 162 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n", 163 i, ret); 164 bus->codec_mask &= ~BIT(i); 165 } 166 } 167 } 168 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC); 169 170 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \ 171 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 172 173 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable) 174 { 175 struct hdac_bus *bus = sof_to_bus(sdev); 176 177 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable); 178 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable); 179 } 180 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 181 182 int hda_codec_i915_init(struct snd_sof_dev *sdev) 183 { 184 struct hdac_bus *bus = sof_to_bus(sdev); 185 int ret; 186 187 /* i915 exposes a HDA codec for HDMI audio */ 188 ret = snd_hdac_i915_init(bus); 189 if (ret < 0) 190 return ret; 191 192 hda_codec_i915_display_power(sdev, true); 193 194 return 0; 195 } 196 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 197 198 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 199 { 200 struct hdac_bus *bus = sof_to_bus(sdev); 201 int ret; 202 203 hda_codec_i915_display_power(sdev, false); 204 205 ret = snd_hdac_i915_exit(bus); 206 207 return ret; 208 } 209 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); 210 211 #endif 212 213 MODULE_LICENSE("Dual BSD/GPL"); 214