Linux kernel mirror (for testing)
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linux
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 */
27static 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
53static 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 */
66void 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 */
81void 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
100void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {}
101void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
102#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
103EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
104EXPORT_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 */
114static 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#endif
120 struct hda_bus *hbus = sof_to_hbus(sdev);
121 struct hdac_device *hdev;
122 struct hda_codec *codec;
123 u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) |
124 (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
125 u32 resp = -1;
126 int ret;
127
128 mutex_lock(&hbus->core.cmd_mutex);
129 snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);
130 snd_hdac_bus_get_response(&hbus->core, address, &resp);
131 mutex_unlock(&hbus->core.cmd_mutex);
132 if (resp == -1)
133 return -EIO;
134 dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",
135 address, resp);
136
137#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
138 hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);
139 if (!hda_priv)
140 return -ENOMEM;
141
142 hda_priv->codec.bus = hbus;
143 hdev = &hda_priv->codec.core;
144 codec = &hda_priv->codec;
145
146 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev);
147 if (ret < 0)
148 return ret;
149
150 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
151 if (!hdev->bus->audio_component) {
152 dev_dbg(sdev->dev,
153 "iDisp hw present but no driver\n");
154 return -ENOENT;
155 }
156 hda_priv->need_display_power = true;
157 }
158
159 if (is_generic_config(hbus))
160 codec->probe_id = HDA_CODEC_ID_GENERIC;
161 else
162 codec->probe_id = 0;
163
164 /*
165 * if common HDMI codec driver is not used, codec load
166 * is skipped here and hdac_hdmi is used instead
167 */
168 if (hda_codec_use_common_hdmi ||
169 (resp & 0xFFFF0000) != IDISP_VID_INTEL) {
170 hdev->type = HDA_DEV_LEGACY;
171 ret = hda_codec_load_module(codec);
172 /*
173 * handle ret==0 (no driver bound) as an error, but pass
174 * other return codes without modification
175 */
176 if (ret == 0)
177 ret = -ENOENT;
178 }
179
180 return ret;
181#else
182 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
183 if (!hdev)
184 return -ENOMEM;
185
186 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev);
187
188 return ret;
189#endif
190}
191
192/* Codec initialization */
193void hda_codec_probe_bus(struct snd_sof_dev *sdev,
194 bool hda_codec_use_common_hdmi)
195{
196 struct hdac_bus *bus = sof_to_bus(sdev);
197 int i, ret;
198
199 /* probe codecs in avail slots */
200 for (i = 0; i < HDA_MAX_CODECS; i++) {
201
202 if (!(bus->codec_mask & (1 << i)))
203 continue;
204
205 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
206 if (ret < 0) {
207 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
208 i, ret);
209 bus->codec_mask &= ~BIT(i);
210 }
211 }
212}
213EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);
214
215#if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
216 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)
217
218void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
219{
220 struct hdac_bus *bus = sof_to_bus(sdev);
221
222 if (HDA_IDISP_CODEC(bus->codec_mask)) {
223 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
224 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
225 }
226}
227EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
228
229int hda_codec_i915_init(struct snd_sof_dev *sdev)
230{
231 struct hdac_bus *bus = sof_to_bus(sdev);
232 int ret;
233
234 /* i915 exposes a HDA codec for HDMI audio */
235 ret = snd_hdac_i915_init(bus);
236 if (ret < 0)
237 return ret;
238
239 /* codec_mask not yet known, power up for probe */
240 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
241
242 return 0;
243}
244EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
245
246int hda_codec_i915_exit(struct snd_sof_dev *sdev)
247{
248 struct hdac_bus *bus = sof_to_bus(sdev);
249
250 if (!bus->audio_component)
251 return 0;
252
253 /* power down unconditionally */
254 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
255
256 return snd_hdac_i915_exit(bus);
257}
258EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
259
260#endif
261
262MODULE_LICENSE("Dual BSD/GPL");