1 // SPDX-License-Identifier: GPL-2.0-only
24 static int hda_codec_mask = -1;
26 MODULE_PARM_DESC(codec_mask, "SOF HDA codec mask for probing");
28 /* load the legacy HDA codec driver */
29 static int request_codec_module(struct hda_codec *codec)  in request_codec_module()  argument
35 	switch (codec->probe_id) {  in request_codec_module()
38 		mod = "snd-hda-codec-generic";  in request_codec_module()
42 		snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias));  in request_codec_module()
48 		dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod);  in request_codec_module()
52 	return device_attach(hda_codec_dev(codec));  in request_codec_module()
55 static int hda_codec_load_module(struct hda_codec *codec)  in hda_codec_load_module()  argument
59 	ret = snd_hdac_device_register(&codec->core);  in hda_codec_load_module()
61 		dev_err(&codec->core.dev, "failed to register hdac device\n");  in hda_codec_load_module()
62 		put_device(&codec->core.dev);  in hda_codec_load_module()
66 	ret = request_codec_module(codec);  in hda_codec_load_module()
68 		codec->probe_id = HDA_CODEC_ID_GENERIC;  in hda_codec_load_module()
69 		ret = request_codec_module(codec);  in hda_codec_load_module()
80 	struct hda_codec *codec;  in hda_codec_jack_wake_enable()  local
89 		list_for_each_codec(codec, hbus) {  in hda_codec_jack_wake_enable()
91 			mask |= BIT(codec->core.addr);  in hda_codec_jack_wake_enable()
92 			if (codec->jacktbl.used)  in hda_codec_jack_wake_enable()
93 				val |= BIT(codec->core.addr);  in hda_codec_jack_wake_enable()
96 		list_for_each_codec(codec, hbus) {  in hda_codec_jack_wake_enable()
98 			mask |= BIT(codec->core.addr);  in hda_codec_jack_wake_enable()
110 	struct hda_codec *codec;  in hda_codec_jack_check()  local
116 	list_for_each_codec(codec, hbus)  in hda_codec_jack_check()
118 		 * Wake up all jack-detecting codecs regardless whether an event  in hda_codec_jack_check()
121 		if (codec->jacktbl.used)  in hda_codec_jack_check()
122 			pm_request_resume(&codec->core.dev);  in hda_codec_jack_check()
128 	((bus)->modelname && !strcmp((bus)->modelname, "generic"))
135 	struct hda_codec *codec;  in hda_codec_device_init()  local
137 	codec = snd_hda_codec_device_init(to_hda_bus(bus), addr, "ehdaudio%dD%d", bus->idx, addr);  in hda_codec_device_init()
138 	if (IS_ERR(codec)) {  in hda_codec_device_init()
139 		dev_err(bus->dev, "device init failed for hdac device\n");  in hda_codec_device_init()
140 		return codec;  in hda_codec_device_init()
143 	codec->core.type = type;  in hda_codec_device_init()
145 	return codec;  in hda_codec_device_init()
148 /* probe individual codec */
153 	struct hda_codec *codec;  in hda_codec_probe()  local
156 	u32 resp = -1;  in hda_codec_probe()
160 		mutex_lock(&hbus->core.cmd_mutex);  in hda_codec_probe()
161 		snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);  in hda_codec_probe()
162 		snd_hdac_bus_get_response(&hbus->core, address, &resp);  in hda_codec_probe()
163 		mutex_unlock(&hbus->core.cmd_mutex);  in hda_codec_probe()
164 	} while (resp == -1 && retry++ < CODEC_PROBE_RETRIES);  in hda_codec_probe()
166 	if (resp == -1)  in hda_codec_probe()
167 		return -EIO;  in hda_codec_probe()
168 	dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",  in hda_codec_probe()
171 	hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);  in hda_codec_probe()
173 		return -ENOMEM;  in hda_codec_probe()
175 	codec = hda_codec_device_init(&hbus->core, address, HDA_DEV_LEGACY);  in hda_codec_probe()
176 	ret = PTR_ERR_OR_ZERO(codec);  in hda_codec_probe()
180 	hda_priv->codec = codec;  in hda_codec_probe()
181 	hda_priv->dev_index = address;  in hda_codec_probe()
182 	dev_set_drvdata(&codec->core.dev, hda_priv);  in hda_codec_probe()
185 		if (!hbus->core.audio_component) {  in hda_codec_probe()
186 			dev_dbg(sdev->dev,  in hda_codec_probe()
187 				"iDisp hw present but no driver\n");  in hda_codec_probe()
188 			ret = -ENOENT;  in hda_codec_probe()
191 		hda_priv->need_display_power = true;  in hda_codec_probe()
195 		codec->probe_id = HDA_CODEC_ID_GENERIC;  in hda_codec_probe()
197 		codec->probe_id = 0;  in hda_codec_probe()
199 	ret = hda_codec_load_module(codec);  in hda_codec_probe()
201 	 * handle ret==0 (no driver bound) as an error, but pass  in hda_codec_probe()
205 		ret = -ENOENT;  in hda_codec_probe()
209 		snd_hdac_device_unregister(&codec->core);  in hda_codec_probe()
210 		put_device(&codec->core.dev);  in hda_codec_probe()
216 /* Codec initialization */
229 		if (!(bus->codec_mask & (1 << i)))  in hda_codec_probe_bus()
234 			dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",  in hda_codec_probe_bus()
236 			bus->codec_mask &= ~BIT(i);  in hda_codec_probe_bus()
267 	if (!bus->codec_mask) {  in hda_codec_detect_mask()
268 		bus->codec_mask = snd_hdac_chip_readw(bus, STATESTS);  in hda_codec_detect_mask()
269 		dev_dbg(bus->dev, "codec_mask = 0x%lx\n", bus->codec_mask);  in hda_codec_detect_mask()
272 	if (hda_codec_mask != -1) {  in hda_codec_detect_mask()
273 		bus->codec_mask &= hda_codec_mask;  in hda_codec_detect_mask()
274 		dev_dbg(bus->dev, "filtered codec_mask = 0x%lx\n",  in hda_codec_detect_mask()
275 			bus->codec_mask);  in hda_codec_detect_mask()
288 	/* initialize the codec command I/O */  in hda_codec_init_cmd_io()
302 	if (bus->cmd_dma_state)  in hda_codec_resume_cmd_io()
315 	/* initialize the codec command I/O */  in hda_codec_stop_cmd_io()
329 	if (bus->cmd_dma_state)  in hda_codec_suspend_cmd_io()
394 	/* codec removal, invoke bus_device_remove */  in hda_codec_device_remove()
411 	if (HDA_IDISP_CODEC(bus->codec_mask)) {  in hda_codec_i915_display_power()
412 		dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);  in hda_codec_i915_display_power()
427 	/* i915 exposes a HDA codec for HDMI audio */  in hda_codec_i915_init()
447 	if (!bus->audio_component)  in hda_codec_i915_exit()
457 MODULE_SOFTDEP("pre: snd-hda-codec-hdmi");