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			pm_request_resume(&codec->core.dev);
97}
98#else
99void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev) {}
100void hda_codec_jack_check(struct snd_sof_dev *sdev) {}
101#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */
102EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);
103EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC);
104
105#if IS_ENABLED(CONFIG_SND_HDA_GENERIC)
106#define is_generic_config(bus) \
107	((bus)->modelname && !strcmp((bus)->modelname, "generic"))
108#else
109#define is_generic_config(x)	0
110#endif
111
112/* probe individual codec */
113static int hda_codec_probe(struct snd_sof_dev *sdev, int address,
114			   bool hda_codec_use_common_hdmi)
115{
116#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)
117	struct hdac_hda_priv *hda_priv;
118	struct hda_codec *codec;
119	int type = HDA_DEV_LEGACY;
120#endif
121	struct hda_bus *hbus = sof_to_hbus(sdev);
122	struct hdac_device *hdev;
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	/* only probe ASoC codec drivers for HDAC-HDMI */
147	if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL)
148		type = HDA_DEV_ASOC;
149
150	ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type);
151	if (ret < 0)
152		return ret;
153
154	if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {
155		if (!hdev->bus->audio_component) {
156			dev_dbg(sdev->dev,
157				"iDisp hw present but no driver\n");
158			ret = -ENOENT;
159			goto out;
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			ret = -ENOENT;
177	}
178
179out:
180	if (ret < 0) {
181		snd_hdac_device_unregister(hdev);
182		put_device(&hdev->dev);
183	}
184#else
185	hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);
186	if (!hdev)
187		return -ENOMEM;
188
189	ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC);
190#endif
191
192	return ret;
193}
194
195/* Codec initialization */
196void hda_codec_probe_bus(struct snd_sof_dev *sdev,
197			 bool hda_codec_use_common_hdmi)
198{
199	struct hdac_bus *bus = sof_to_bus(sdev);
200	int i, ret;
201
202	/* probe codecs in avail slots */
203	for (i = 0; i < HDA_MAX_CODECS; i++) {
204
205		if (!(bus->codec_mask & (1 << i)))
206			continue;
207
208		ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);
209		if (ret < 0) {
210			dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",
211				 i, ret);
212			bus->codec_mask &= ~BIT(i);
213		}
214	}
215}
216EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC);
217
218#if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \
219	IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI)
220
221void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable)
222{
223	struct hdac_bus *bus = sof_to_bus(sdev);
224
225	if (HDA_IDISP_CODEC(bus->codec_mask)) {
226		dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);
227		snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);
228	}
229}
230EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
231
232int hda_codec_i915_init(struct snd_sof_dev *sdev)
233{
234	struct hdac_bus *bus = sof_to_bus(sdev);
235	int ret;
236
237	/* i915 exposes a HDA codec for HDMI audio */
238	ret = snd_hdac_i915_init(bus);
239	if (ret < 0)
240		return ret;
241
242	/* codec_mask not yet known, power up for probe */
243	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true);
244
245	return 0;
246}
247EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
248
249int hda_codec_i915_exit(struct snd_sof_dev *sdev)
250{
251	struct hdac_bus *bus = sof_to_bus(sdev);
252
253	if (!bus->audio_component)
254		return 0;
255
256	/* power down unconditionally */
257	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false);
258
259	return snd_hdac_i915_exit(bus);
260}
261EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915);
262
263#endif
264
265MODULE_LICENSE("Dual BSD/GPL");
266