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 #ifdef MODULE 28 static void hda_codec_load_module(struct hda_codec *codec) 29 { 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 } 37 #else 38 static void hda_codec_load_module(struct hda_codec *codec) {} 39 #endif 40 41 /* enable controller wake up event for all codecs with jack connectors */ 42 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) 43 { 44 struct hda_bus *hbus = sof_to_hbus(sdev); 45 struct hdac_bus *bus = sof_to_bus(sdev); 46 struct hda_codec *codec; 47 unsigned int mask = 0; 48 49 list_for_each_codec(codec, hbus) 50 if (codec->jacktbl.used) 51 mask |= BIT(codec->core.addr); 52 53 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask); 54 } 55 56 /* check jack status after resuming from suspend mode */ 57 void hda_codec_jack_check(struct snd_sof_dev *sdev) 58 { 59 struct hda_bus *hbus = sof_to_hbus(sdev); 60 struct hdac_bus *bus = sof_to_bus(sdev); 61 struct hda_codec *codec; 62 63 /* disable controller Wake Up event*/ 64 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, 0); 65 66 list_for_each_codec(codec, hbus) 67 /* 68 * Wake up all jack-detecting codecs regardless whether an event 69 * has been recorded in STATESTS 70 */ 71 if (codec->jacktbl.used) 72 schedule_delayed_work(&codec->jackpoll_work, 73 codec->jackpoll_interval); 74 } 75 #else 76 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {} 77 void hda_codec_jack_check(struct snd_sof_dev *sdev) {} 78 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ 79 EXPORT_SYMBOL(hda_codec_jack_wake_enable); 80 EXPORT_SYMBOL(hda_codec_jack_check); 81 82 /* probe individual codec */ 83 static int hda_codec_probe(struct snd_sof_dev *sdev, int address) 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 /* use legacy bus only for HDA codecs, idisp uses ext bus */ 117 if ((resp & 0xFFFF0000) != IDISP_VID_INTEL) { 118 hdev->type = HDA_DEV_LEGACY; 119 hda_codec_load_module(&hda_priv->codec); 120 } 121 122 return 0; 123 #else 124 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); 125 if (!hdev) 126 return -ENOMEM; 127 128 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev); 129 130 return ret; 131 #endif 132 } 133 134 /* Codec initialization */ 135 int hda_codec_probe_bus(struct snd_sof_dev *sdev) 136 { 137 struct hdac_bus *bus = sof_to_bus(sdev); 138 int i, ret; 139 140 /* probe codecs in avail slots */ 141 for (i = 0; i < HDA_MAX_CODECS; i++) { 142 143 if (!(bus->codec_mask & (1 << i))) 144 continue; 145 146 ret = hda_codec_probe(sdev, i); 147 if (ret < 0) { 148 dev_err(bus->dev, "error: codec #%d probe error, ret: %d\n", 149 i, ret); 150 return ret; 151 } 152 } 153 154 return 0; 155 } 156 EXPORT_SYMBOL(hda_codec_probe_bus); 157 158 #if IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 159 160 void hda_codec_i915_get(struct snd_sof_dev *sdev) 161 { 162 struct hdac_bus *bus = sof_to_bus(sdev); 163 164 dev_dbg(bus->dev, "Turning i915 HDAC power on\n"); 165 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 166 } 167 EXPORT_SYMBOL(hda_codec_i915_get); 168 169 void hda_codec_i915_put(struct snd_sof_dev *sdev) 170 { 171 struct hdac_bus *bus = sof_to_bus(sdev); 172 173 dev_dbg(bus->dev, "Turning i915 HDAC power off\n"); 174 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 175 } 176 EXPORT_SYMBOL(hda_codec_i915_put); 177 178 int hda_codec_i915_init(struct snd_sof_dev *sdev) 179 { 180 struct hdac_bus *bus = sof_to_bus(sdev); 181 int ret; 182 183 /* i915 exposes a HDA codec for HDMI audio */ 184 ret = snd_hdac_i915_init(bus); 185 if (ret < 0) 186 return ret; 187 188 hda_codec_i915_get(sdev); 189 190 return 0; 191 } 192 EXPORT_SYMBOL(hda_codec_i915_init); 193 194 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 195 { 196 struct hdac_bus *bus = sof_to_bus(sdev); 197 int ret; 198 199 hda_codec_i915_put(sdev); 200 201 ret = snd_hdac_i915_exit(bus); 202 203 return ret; 204 } 205 EXPORT_SYMBOL(hda_codec_i915_exit); 206 207 #endif /* CONFIG_SND_SOC_HDAC_HDMI */ 208 209 MODULE_LICENSE("Dual BSD/GPL"); 210