// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)//// This file is provided under a dual BSD/GPLv2 license.  When using or// redistributing this file, you may do so under either license.//// Copyright(c) 2018 Intel Corporation. All rights reserved.//// Authors: Keyon Jie <yang.jie@linux.intel.com>// #include <linux/module.h>#include <sound/hdaudio_ext.h>#include <sound/hda_register.h>#include <sound/hda_codec.h>#include <sound/hda_i915.h>#include <sound/sof.h>#include "../ops.h"#include "hda.h"#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)#include "../../codecs/hdac_hda.h"#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */ #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)#define IDISP_VID_INTEL	0x80860000 /* load the legacy HDA codec driver */static int request_codec_module(struct hda_codec *codec){#ifdef MODULE	char alias[MODULE_NAME_LEN];	const char *mod = NULL; 	switch (codec->probe_id) {	case HDA_CODEC_ID_GENERIC:#if IS_MODULE(CONFIG_SND_HDA_GENERIC)		mod = "snd-hda-codec-generic";#endif		break;	default:		snd_hdac_codec_modalias(&codec->core, alias, sizeof(alias));		mod = alias;		break;	} 	if (mod) {		dev_dbg(&codec->core.dev, "loading codec module: %s\n", mod);		request_module(mod);	}#endif /* MODULE */	return device_attach(hda_codec_dev(codec));} static int hda_codec_load_module(struct hda_codec *codec){	int ret = request_codec_module(codec); 	if (ret <= 0) {		codec->probe_id = HDA_CODEC_ID_GENERIC;		ret = request_codec_module(codec);	} 	return ret;} /* enable controller wake up event for all codecs with jack connectors */void hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable){	struct hda_bus *hbus = sof_to_hbus(sdev);	struct hdac_bus *bus = sof_to_bus(sdev);	struct hda_codec *codec;	unsigned int mask = 0; 	if (enable) {		list_for_each_codec(codec, hbus)			if (codec->jacktbl.used)				mask |= BIT(codec->core.addr);	} 	snd_hdac_chip_updatew(bus, WAKEEN, STATESTS_INT_MASK, mask);} /* check jack status after resuming from suspend mode */void hda_codec_jack_check(struct snd_sof_dev *sdev){	struct hda_bus *hbus = sof_to_hbus(sdev);	struct hda_codec *codec; 	list_for_each_codec(codec, hbus)		/*		 * Wake up all jack-detecting codecs regardless whether an event		 * has been recorded in STATESTS		 */		if (codec->jacktbl.used)			pm_request_resume(&codec->core.dev);}#elsevoid hda_codec_jack_wake_enable(struct snd_sof_dev *sdev, bool enable) {}void hda_codec_jack_check(struct snd_sof_dev *sdev) {}#endif /* CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC */EXPORT_SYMBOL_NS(hda_codec_jack_wake_enable, SND_SOC_SOF_HDA_AUDIO_CODEC);EXPORT_SYMBOL_NS(hda_codec_jack_check, SND_SOC_SOF_HDA_AUDIO_CODEC); #if IS_ENABLED(CONFIG_SND_HDA_GENERIC)#define is_generic_config(bus) \	((bus)->modelname && !strcmp((bus)->modelname, "generic"))#else#define is_generic_config(x)	0#endif /* probe individual codec */static int hda_codec_probe(struct snd_sof_dev *sdev, int address,			   bool hda_codec_use_common_hdmi){#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)	struct hdac_hda_priv *hda_priv;	struct hda_codec *codec;	int type = HDA_DEV_LEGACY;#endif	struct hda_bus *hbus = sof_to_hbus(sdev);	struct hdac_device *hdev;	u32 hda_cmd = (address << 28) | (AC_NODE_ROOT << 20) |		(AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;	u32 resp = -1;	int ret; 	mutex_lock(&hbus->core.cmd_mutex);	snd_hdac_bus_send_cmd(&hbus->core, hda_cmd);	snd_hdac_bus_get_response(&hbus->core, address, &resp);	mutex_unlock(&hbus->core.cmd_mutex);	if (resp == -1)		return -EIO;	dev_dbg(sdev->dev, "HDA codec #%d probed OK: response: %x\n",		address, resp); #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_AUDIO_CODEC)	hda_priv = devm_kzalloc(sdev->dev, sizeof(*hda_priv), GFP_KERNEL);	if (!hda_priv)		return -ENOMEM; 	hda_priv->codec.bus = hbus;	hdev = &hda_priv->codec.core;	codec = &hda_priv->codec; 	/* only probe ASoC codec drivers for HDAC-HDMI */	if (!hda_codec_use_common_hdmi && (resp & 0xFFFF0000) == IDISP_VID_INTEL)		type = HDA_DEV_ASOC; 	ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, type);	if (ret < 0)		return ret; 	if ((resp & 0xFFFF0000) == IDISP_VID_INTEL) {		if (!hdev->bus->audio_component) {			dev_dbg(sdev->dev,				"iDisp hw present but no driver\n");			ret = -ENOENT;			goto out;		}		hda_priv->need_display_power = true;	} 	if (is_generic_config(hbus))		codec->probe_id = HDA_CODEC_ID_GENERIC;	else		codec->probe_id = 0; 	if (type == HDA_DEV_LEGACY) {		ret = hda_codec_load_module(codec);		/*		 * handle ret==0 (no driver bound) as an error, but pass		 * other return codes without modification		 */		if (ret == 0)			ret = -ENOENT;	} out:	if (ret < 0) {		snd_hdac_device_unregister(hdev);		put_device(&hdev->dev);	}#else	hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL);	if (!hdev)		return -ENOMEM; 	ret = snd_hdac_ext_bus_device_init(&hbus->core, address, hdev, HDA_DEV_ASOC);#endif 	return ret;} /* Codec initialization */void hda_codec_probe_bus(struct snd_sof_dev *sdev,			 bool hda_codec_use_common_hdmi){	struct hdac_bus *bus = sof_to_bus(sdev);	int i, ret; 	/* probe codecs in avail slots */	for (i = 0; i < HDA_MAX_CODECS; i++) { 		if (!(bus->codec_mask & (1 << i)))			continue; 		ret = hda_codec_probe(sdev, i, hda_codec_use_common_hdmi);		if (ret < 0) {			dev_warn(bus->dev, "codec #%d probe error, ret: %d\n",				 i, ret);			bus->codec_mask &= ~BIT(i);		}	}}EXPORT_SYMBOL_NS(hda_codec_probe_bus, SND_SOC_SOF_HDA_AUDIO_CODEC); #if IS_ENABLED(CONFIG_SND_HDA_CODEC_HDMI) || \	IS_ENABLED(CONFIG_SND_SOC_HDAC_HDMI) void hda_codec_i915_display_power(struct snd_sof_dev *sdev, bool enable){	struct hdac_bus *bus = sof_to_bus(sdev); 	if (HDA_IDISP_CODEC(bus->codec_mask)) {		dev_dbg(bus->dev, "Turning i915 HDAC power %d\n", enable);		snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, enable);	}}EXPORT_SYMBOL_NS(hda_codec_i915_display_power, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); int hda_codec_i915_init(struct snd_sof_dev *sdev){	struct hdac_bus *bus = sof_to_bus(sdev);	int ret; 	/* i915 exposes a HDA codec for HDMI audio */	ret = snd_hdac_i915_init(bus);	if (ret < 0)		return ret; 	/* codec_mask not yet known, power up for probe */	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, true); 	return 0;}EXPORT_SYMBOL_NS(hda_codec_i915_init, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); int hda_codec_i915_exit(struct snd_sof_dev *sdev){	struct hdac_bus *bus = sof_to_bus(sdev); 	if (!bus->audio_component)		return 0; 	/* power down unconditionally */	snd_hdac_display_power(bus, HDA_CODEC_IDX_CONTROLLER, false); 	return snd_hdac_i915_exit(bus);}EXPORT_SYMBOL_NS(hda_codec_i915_exit, SND_SOC_SOF_HDA_AUDIO_CODEC_I915); #endif MODULE_LICENSE("Dual BSD/GPL");