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(hda_codec_jack_wake_enable); 79 EXPORT_SYMBOL(hda_codec_jack_check); 80 81 /* probe individual codec */ 82 static int hda_codec_probe(struct snd_sof_dev *sdev, int address) 83 { 84 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 85 struct hdac_hda_priv *hda_priv; 86 struct snd_soc_acpi_mach_params *mach_params = NULL; 87 struct snd_sof_pdata *pdata = sdev->pdata; 88 #endif 89 struct hda_bus *hbus = sof_to_hbus(sdev); 90 struct hdac_device *hdev; 91 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) | 92 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID; 93 u32 resp = -1; 94 int ret; 95 96 mutex_lock(&hbus->core.cmd_mutex); 97 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd); 98 snd_hdac_bus_get_response(&hbus->core, address, &resp); 99 mutex_unlock(&hbus->core.cmd_mutex); 100 if (resp == -1) 101 return -EIO; 102 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n", 103 address, resp); 104 105 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC) 106 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL); 107 if (!hda_priv) 108 return -ENOMEM; 109 110 hda_priv->codec.bus = hbus; 111 hdev = &hda_priv->codec.core; 112 113 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev); 114 if (ret < 0) 115 return ret; 116 117 if (pdata->machine) 118 mach_params = (struct snd_soc_acpi_mach_params *) 119 &pdata->machine->mach_params; 120 121 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) 122 hda_priv->need_display_power = true; 123 124 /* 125 * if common HDMI codec driver is not used, codec load 126 * is skipped here and hdac_hdmi is used instead 127 */ 128 if ((mach_params && mach_params->common_hdmi_codec_drv) || 129 (resp & 0xFFFF0000) != IDISP_VID_INTEL) { 130 hdev->type = HDA_DEV_LEGACY; 131 ret = hda_codec_load_module(&hda_priv->codec); 132 /* 133 * handle ret==0 (no driver bound) as an error, but pass 134 * other return codes without modification 135 */ 136 if (ret == 0) 137 ret = -ENOENT; 138 } 139 140 return ret; 141 #else 142 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); 143 if (!hdev) 144 return -ENOMEM; 145 146 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev); 147 148 return ret; 149 #endif 150 } 151 152 /* Codec initialization */ 153 int hda_codec_probe_bus(struct snd_sof_dev *sdev) 154 { 155 struct hdac_bus *bus = sof_to_bus(sdev); 156 int i, ret; 157 158 /* probe codecs in avail slots */ 159 for (i = 0; i < HDA_MAX_CODECS; i++) { 160 161 if (!(bus->codec_mask & (1 << i))) 162 continue; 163 164 ret = hda_codec_probe(sdev, i); 165 if (ret < 0) { 166 dev_err(bus->dev, "error: codec #%d probe error, ret: %d\n", 167 i, ret); 168 return ret; 169 } 170 } 171 172 return 0; 173 } 174 EXPORT_SYMBOL(hda_codec_probe_bus); 175 176 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \ 177 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) 178 179 void hda_codec_i915_get(struct snd_sof_dev *sdev) 180 { 181 struct hdac_bus *bus = sof_to_bus(sdev); 182 183 dev_dbg(bus->dev, "Turning i915 HDAC power on\n"); 184 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 185 } 186 EXPORT_SYMBOL(hda_codec_i915_get); 187 188 void hda_codec_i915_put(struct snd_sof_dev *sdev) 189 { 190 struct hdac_bus *bus = sof_to_bus(sdev); 191 192 dev_dbg(bus->dev, "Turning i915 HDAC power off\n"); 193 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 194 } 195 EXPORT_SYMBOL(hda_codec_i915_put); 196 197 int hda_codec_i915_init(struct snd_sof_dev *sdev) 198 { 199 struct hdac_bus *bus = sof_to_bus(sdev); 200 int ret; 201 202 /* i915 exposes a HDA codec for HDMI audio */ 203 ret = snd_hdac_i915_init(bus); 204 if (ret < 0) 205 return ret; 206 207 hda_codec_i915_get(sdev); 208 209 return 0; 210 } 211 EXPORT_SYMBOL(hda_codec_i915_init); 212 213 int hda_codec_i915_exit(struct snd_sof_dev *sdev) 214 { 215 struct hdac_bus *bus = sof_to_bus(sdev); 216 int ret; 217 218 hda_codec_i915_put(sdev); 219 220 ret = snd_hdac_i915_exit(bus); 221 222 return ret; 223 } 224 EXPORT_SYMBOL(hda_codec_i915_exit); 225 226 #endif 227 228 MODULE_LICENSE("Dual BSD/GPL"); 229