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)66 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev)
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 list_for_each_codec(codec, hbus)
74 if (codec->jacktbl.used)
75 mask |= BIT(codec->core.addr);
76
77 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask);
78 }
79
80 /* check jack status after resuming from suspend mode */
hda_codec_jack_check(struct snd_sof_dev * sdev)81 void hda_codec_jack_check(struct snd_sof_dev *sdev)
82 {
83 struct hda_bus *hbus = sof_to_hbus(sdev);
84 struct hdac_bus *bus = sof_to_bus(sdev);
85 struct hda_codec *codec;
86
87 /* disable controller Wake Up event*/
88 snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, 0);
89
90 list_for_each_codec(codec, hbus)
91 /*
92 * Wake up all jack-detecting codecs regardless whether an event
93 * has been recorded in STATESTS
94 */
95 if (codec->jacktbl.used)
96 schedule_delayed_work(&codec->jackpoll_work,
97 codec->jackpoll_interval);
98 }
99 #else
hda_codec_jack_wake_enable(struct snd_sof_dev * sdev)100 void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {}
hda_codec_jack_check(struct snd_sof_dev * sdev)101 void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
102 #endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
103 EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
104 EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC);
105
106 #if IS_ENABLED(CONFIG_SND_HDA_GENERIC)
107 #define is_generic_config(bus) \
108 ((bus)->modelname && !strcmp((bus)->modelname, "generic"))
109 #else
110 #define is_generic_config(x) 0
111 #endif
112
113 /* probe individual codec */
hda_codec_probe(struct snd_sof_dev * sdev,int address,bool hda_codec_use_common_hdmi)114 static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
115 bool hda_codec_use_common_hdmi)
116 {
117 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
118 struct hdac_hda_priv *hda_priv;
119 struct hda_codec *codec;
120 int type = HDA_DEV_LEGACY;
121 #endif
122 struct hda_bus *hbus = sof_to_hbus(sdev);
123 struct hdac_device *hdev;
124 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) |
125 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
126 u32 resp = -1;
127 int ret;
128
129 mutex_lock(&hbus->core.cmd_mutex);
130 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);
131 snd_hdac_bus_get_response(&hbus->core, address, &resp);
132 mutex_unlock(&hbus->core.cmd_mutex);
133 if (resp == -1)
134 return -EIO;
135 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",
136 address, resp);
137
138 #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
139 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);
140 if (!hda_priv)
141 return -ENOMEM;
142
143 hda_priv->codec.bus = hbus;
144 hdev = &hda_priv->codec.core;
145 codec = &hda_priv->codec;
146
147 /* only probe ASoC codec drivers for HDAC-HDMI */
148 if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL)
149 type = HDA_DEV_ASOC;
150
151 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type);
152 if (ret < 0)
153 return ret;
154
155 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
156 if (!hdev->bus->audio_component) {
157 dev_dbg(sdev->dev,
158 "iDisp hw present but no driver\n");
159 goto error;
160 }
161 hda_priv->need_display_power = true;
162 }
163
164 if (is_generic_config(hbus))
165 codec->probe_id = HDA_CODEC_ID_GENERIC;
166 else
167 codec->probe_id = 0;
168
169 if (type == HDA_DEV_LEGACY) {
170 ret = hda_codec_load_module(codec);
171 /*
172 * handle ret==0 (no driver bound) as an error, but pass
173 * other return codes without modification
174 */
175 if (ret == 0)
176 goto error;
177 }
178
179 return ret;
180
181 error:
182 snd_hdac_ext_bus_device_exit(hdev);
183 return -ENOENT;
184
185 #else
186 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
187 if (!hdev)
188 return -ENOMEM;
189
190 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC);
191
192 return ret;
193 #endif
194 }
195
196 /* Codec initialization */
hda_codec_probe_bus(struct snd_sof_dev * sdev,bool hda_codec_use_common_hdmi)197 void hda_codec_probe_bus(struct snd_sof_dev *sdev,
198 bool hda_codec_use_common_hdmi)
199 {
200 struct hdac_bus *bus = sof_to_bus(sdev);
201 int i, ret;
202
203 /* probe codecs in avail slots */
204 for (i = 0; i < HDA_MAX_CODECS; i++) {
205
206 if (!(bus->codec_mask & (1 << i)))
207 continue;
208
209 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
210 if (ret < 0) {
211 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
212 i, ret);
213 bus->codec_mask &= ~BIT(i);
214 }
215 }
216 }
217 EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);
218
219 #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
220 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)
221
hda_codec_i915_display_power(struct snd_sof_dev * sdev,bool enable)222 void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
223 {
224 struct hdac_bus *bus = sof_to_bus(sdev);
225
226 if (HDA_IDISP_CODEC(bus->codec_mask)) {
227 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
228 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
229 }
230 }
231 EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
232
hda_codec_i915_init(struct snd_sof_dev * sdev)233 int hda_codec_i915_init(struct snd_sof_dev *sdev)
234 {
235 struct hdac_bus *bus = sof_to_bus(sdev);
236 int ret;
237
238 /* i915 exposes a HDA codec for HDMI audio */
239 ret = snd_hdac_i915_init(bus);
240 if (ret < 0)
241 return ret;
242
243 /* codec_mask not yet known, power up for probe */
244 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
245
246 return 0;
247 }
248 EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
249
hda_codec_i915_exit(struct snd_sof_dev * sdev)250 int hda_codec_i915_exit(struct snd_sof_dev *sdev)
251 {
252 struct hdac_bus *bus = sof_to_bus(sdev);
253
254 if (!bus->audio_component)
255 return 0;
256
257 /* power down unconditionally */
258 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
259
260 return snd_hdac_i915_exit(bus);
261 }
262 EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
263
264 #endif
265
266 MODULE_LICENSE("Dual BSD/GPL");
267
