1 // SPDX-License-Identifier: (GPL-2.0-only 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 */
request_codec_module(struct hda_codec * codec)27 static int request_codec_module(struct hda_codec *codec)
28 {
29 #ifdef MODULE
30 char alias[MODULE_NAME_LEN];
31 const char *mod = NULL;
32
33 switch (codec->probe_id) {
34 case HDA_CODEC_ID_GENERIC:
35 #if IS_MODULE(CONFIG_SND_HDA_GENERIC)
36 mod = "snd-hda-codec-generic";
37 #endif
38 break;
39 default:
40 snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias));
41 mod = alias;
42 break;
43 }
44
45 if (mod) {
46 dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod);
47 request_module(mod);
48 }
49 #endif /* MODULE */
50 return device_attach(hda_codec_dev(codec));
51 }
52
hda_codec_load_module(struct hda_codec * codec)53 static int hda_codec_load_module(struct hda_codec *codec)
54 {
55 int ret = request_codec_module(codec);
56
57 if (ret <= 0) {
58 codec->probe_id = HDA_CODEC_ID_GENERIC;
59 ret = request_codec_module(codec);
60 }
61
62 return ret;
63 }
64
65 /* enable controller wake up event for all codecs with jack connectors */
hda_codec_jack_wake_enable(struct snd_sof_dev * sdev,bool enable)66 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable)
67 {
68 struct hda_bus *hbus = sof_to_hbus(sdev);
69 struct hdac_bus *bus = sof_to_bus(sdev);
70 struct hda_codec *codec;
71 unsigned int mask = 0;
72
73 if (enable) {
74 list_for_each_codec(codec, hbus)
75 if (codec->jacktbl.used)
76 mask |= BIT(codec->core.addr);
77 }
78
79 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask);
80 }
81
82 /* check jack status after resuming from suspend mode */
hda_codec_jack_check(struct snd_sof_dev * sdev)83 void hda_codec_jack_check(struct snd_sof_dev *sdev)
84 {
85 struct hda_bus *hbus = sof_to_hbus(sdev);
86 struct hda_codec *codec;
87
88 list_for_each_codec(codec, hbus)
89 /*
90 * Wake up all jack-detecting codecs regardless whether an event
91 * has been recorded in STATESTS
92 */
93 if (codec->jacktbl.used)
94 pm_request_resume(&codec->core.dev);
95 }
96 #else
hda_codec_jack_wake_enable(struct snd_sof_dev * sdev,bool enable)97 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) {}
hda_codec_jack_check(struct snd_sof_dev * sdev)98 void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
99 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
100 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
101 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC);
102
103 #if IS_ENABLED(CONFIG_SND_HDA_GENERIC)
104 #define is_generic_config(bus) \
105 ((bus)->modelname && !strcmp((bus)->modelname, "generic"))
106 #else
107 #define is_generic_config(x) 0
108 #endif
109
110 /* probe individual codec */
hda_codec_probe(struct snd_sof_dev * sdev,int address,bool hda_codec_use_common_hdmi)111 static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
112 bool hda_codec_use_common_hdmi)
113 {
114 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
115 struct hdac_hda_priv *hda_priv;
116 struct hda_codec *codec;
117 int type = HDA_DEV_LEGACY;
118 #endif
119 struct hda_bus *hbus = sof_to_hbus(sdev);
120 struct hdac_device *hdev;
121 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) |
122 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
123 u32 resp = -1;
124 int ret;
125
126 mutex_lock(&hbus->core.cmd_mutex);
127 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);
128 snd_hdac_bus_get_response(&hbus->core, address, &resp);
129 mutex_unlock(&hbus->core.cmd_mutex);
130 if (resp == -1)
131 return -EIO;
132 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",
133 address, resp);
134
135 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
136 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);
137 if (!hda_priv)
138 return -ENOMEM;
139
140 hda_priv->codec.bus = hbus;
141 hdev = &hda_priv->codec.core;
142 codec = &hda_priv->codec;
143
144 /* only probe ASoC codec drivers for HDAC-HDMI */
145 if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL)
146 type = HDA_DEV_ASOC;
147
148 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type);
149 if (ret < 0)
150 return ret;
151
152 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
153 if (!hdev->bus->audio_component) {
154 dev_dbg(sdev->dev,
155 "iDisp hw present but no driver\n");
156 ret = -ENOENT;
157 goto out;
158 }
159 hda_priv->need_display_power = true;
160 }
161
162 if (is_generic_config(hbus))
163 codec->probe_id = HDA_CODEC_ID_GENERIC;
164 else
165 codec->probe_id = 0;
166
167 if (type == HDA_DEV_LEGACY) {
168 ret = hda_codec_load_module(codec);
169 /*
170 * handle ret==0 (no driver bound) as an error, but pass
171 * other return codes without modification
172 */
173 if (ret == 0)
174 ret = -ENOENT;
175 }
176
177 out:
178 if (ret < 0) {
179 snd_hdac_device_unregister(hdev);
180 put_device(&hdev->dev);
181 }
182 #else
183 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
184 if (!hdev)
185 return -ENOMEM;
186
187 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC);
188 #endif
189
190 return ret;
191 }
192
193 /* Codec initialization */
hda_codec_probe_bus(struct snd_sof_dev * sdev,bool hda_codec_use_common_hdmi)194 void hda_codec_probe_bus(struct snd_sof_dev *sdev,
195 bool hda_codec_use_common_hdmi)
196 {
197 struct hdac_bus *bus = sof_to_bus(sdev);
198 int i, ret;
199
200 /* probe codecs in avail slots */
201 for (i = 0; i < HDA_MAX_CODECS; i++) {
202
203 if (!(bus->codec_mask & (1 << i)))
204 continue;
205
206 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
207 if (ret < 0) {
208 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
209 i, ret);
210 bus->codec_mask &= ~BIT(i);
211 }
212 }
213 }
214 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);
215
216 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
217 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)
218
hda_codec_i915_display_power(struct snd_sof_dev * sdev,bool enable)219 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
220 {
221 struct hdac_bus *bus = sof_to_bus(sdev);
222
223 if (HDA_IDISP_CODEC(bus->codec_mask)) {
224 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
225 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
226 }
227 }
228 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
229
hda_codec_i915_init(struct snd_sof_dev * sdev)230 int hda_codec_i915_init(struct snd_sof_dev *sdev)
231 {
232 struct hdac_bus *bus = sof_to_bus(sdev);
233 int ret;
234
235 /* i915 exposes a HDA codec for HDMI audio */
236 ret = snd_hdac_i915_init(bus);
237 if (ret < 0)
238 return ret;
239
240 /* codec_mask not yet known, power up for probe */
241 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
242
243 return 0;
244 }
245 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
246
hda_codec_i915_exit(struct snd_sof_dev * sdev)247 int hda_codec_i915_exit(struct snd_sof_dev *sdev)
248 {
249 struct hdac_bus *bus = sof_to_bus(sdev);
250
251 if (!bus->audio_component)
252 return 0;
253
254 /* power down unconditionally */
255 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
256
257 return snd_hdac_i915_exit(bus);
258 }
259 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
260
261 #endif
262
263 MODULE_LICENSE("Dual BSD/GPL");
264