Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 */
27static 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 */
41void 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 */
56void 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
75void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {}
76void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
77#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
78EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
79EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC);
80
81/* probe individual codec */
82static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
83 bool hda_codec_use_common_hdmi)
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 if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
117 if (!hdev->bus->audio_component) {
118 dev_dbg(sdev->dev,
119 "iDisp hw present but no driver\n");
120 return -ENOENT;
121 }
122 hda_priv->need_display_power = true;
123 }
124
125 /*
126 * if common HDMI codec driver is not used, codec load
127 * is skipped here and hdac_hdmi is used instead
128 */
129 if (hda_codec_use_common_hdmi ||
130 (resp & 0xFFFF0000) != IDISP_VID_INTEL) {
131 hdev->type = HDA_DEV_LEGACY;
132 ret = hda_codec_load_module(&hda_priv->codec);
133 /*
134 * handle ret==0 (no driver bound) as an error, but pass
135 * other return codes without modification
136 */
137 if (ret == 0)
138 ret = -ENOENT;
139 }
140
141 return ret;
142#else
143 hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
144 if (!hdev)
145 return -ENOMEM;
146
147 ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev);
148
149 return ret;
150#endif
151}
152
153/* Codec initialization */
154void hda_codec_probe_bus(struct snd_sof_dev *sdev,
155 bool hda_codec_use_common_hdmi)
156{
157 struct hdac_bus *bus = sof_to_bus(sdev);
158 int i, ret;
159
160 /* probe codecs in avail slots */
161 for (i = 0; i < HDA_MAX_CODECS; i++) {
162
163 if (!(bus->codec_mask & (1 << i)))
164 continue;
165
166 ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
167 if (ret < 0) {
168 dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
169 i, ret);
170 bus->codec_mask &= ~BIT(i);
171 }
172 }
173}
174EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);
175
176#if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
177 IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)
178
179void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
180{
181 struct hdac_bus *bus = sof_to_bus(sdev);
182
183 if (HDA_IDISP_CODEC(bus->codec_mask)) {
184 dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
185 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
186 }
187}
188EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
189
190int hda_codec_i915_init(struct snd_sof_dev *sdev)
191{
192 struct hdac_bus *bus = sof_to_bus(sdev);
193 int ret;
194
195 /* i915 exposes a HDA codec for HDMI audio */
196 ret = snd_hdac_i915_init(bus);
197 if (ret < 0)
198 return ret;
199
200 /* codec_mask not yet known, power up for probe */
201 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
202
203 return 0;
204}
205EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
206
207int hda_codec_i915_exit(struct snd_sof_dev *sdev)
208{
209 struct hdac_bus *bus = sof_to_bus(sdev);
210 int ret;
211
212 if (!bus->audio_component)
213 return 0;
214
215 /* power down unconditionally */
216 snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
217
218 ret = snd_hdac_i915_exit(bus);
219
220 return ret;
221}
222EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
223
224#endif
225
226MODULE_LICENSE("Dual BSD/GPL");