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ALSA: hda: realtek: Move hda_component implementation to module

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Move the generic parts of the hda_component implementation into a new
hda_component module. This will allow other HDA codecs to add support
for the component binding API without duplicating all the code.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Tested-by: Gergo Koteles <soyer@irl.hu>
Link: https://lore.kernel.org/r/20240124112607.77614-3-rf@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Richard Fitzgerald 2024-01-24 11:26:07 +00:00 committed by Takashi Iwai
parent cf0d956635
commit fd895a74dc
6 changed files with 252 additions and 129 deletions
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1
MAINTAINERS
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@ -5014,6 +5014,7 @@ F: include/linux/mfd/cs42l43*
F: include/sound/cs*
F: sound/pci/hda/cirrus*
F: sound/pci/hda/cs*
F: sound/pci/hda/hda_component*
F: sound/pci/hda/hda_cs_dsp_ctl.*
F: sound/soc/codecs/cs*

4
sound/pci/hda/Kconfig
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@ -116,6 +116,9 @@ config SND_HDA_CS_DSP_CONTROLS
tristate
select FW_CS_DSP
config SND_HDA_SCODEC_COMPONENT
tristate
config SND_HDA_SCODEC_CS35L41_I2C
tristate "Build CS35L41 HD-audio side codec support for I2C Bus"
depends on I2C
@ -201,6 +204,7 @@ config SND_HDA_CODEC_REALTEK
tristate "Build Realtek HD-audio codec support"
select SND_HDA_GENERIC
select SND_HDA_GENERIC_LEDS
select SND_HDA_SCODEC_COMPONENT
help
Say Y or M here to include Realtek HD-audio codec support in
snd-hda-intel driver, such as ALC880.

2
sound/pci/hda/Makefile
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@ -37,6 +37,7 @@ snd-hda-scodec-cs35l56-objs := cs35l56_hda.o
snd-hda-scodec-cs35l56-i2c-objs := cs35l56_hda_i2c.o
snd-hda-scodec-cs35l56-spi-objs := cs35l56_hda_spi.o
snd-hda-cs-dsp-ctls-objs := hda_cs_dsp_ctl.o
snd-hda-scodec-component-objs := hda_component.o
snd-hda-scodec-tas2781-i2c-objs := tas2781_hda_i2c.o
# common driver
@ -67,6 +68,7 @@ obj-$(CONFIG_SND_HDA_SCODEC_CS35L56) += snd-hda-scodec-cs35l56.o
obj-$(CONFIG_SND_HDA_SCODEC_CS35L56_I2C) += snd-hda-scodec-cs35l56-i2c.o
obj-$(CONFIG_SND_HDA_SCODEC_CS35L56_SPI) += snd-hda-scodec-cs35l56-spi.o
obj-$(CONFIG_SND_HDA_CS_DSP_CONTROLS) += snd-hda-cs-dsp-ctls.o
obj-$(CONFIG_SND_HDA_SCODEC_COMPONENT) += snd-hda-scodec-component.o
obj-$(CONFIG_SND_HDA_SCODEC_TAS2781_I2C) += snd-hda-scodec-tas2781-i2c.o
# this must be the last entry after codec drivers;

169
sound/pci/hda/hda_component.c Normal file
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@ -0,0 +1,169 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* HD audio Component Binding Interface
*
* Copyright (C) 2021, 2023 Cirrus Logic, Inc. and
* Cirrus Logic International Semiconductor Ltd.
*/
#include <linux/acpi.h>
#include <linux/component.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <sound/hda_codec.h>
#include "hda_component.h"
#include "hda_local.h"
#ifdef CONFIG_ACPI
void hda_component_acpi_device_notify(struct hda_component *comps, int num_comps,
acpi_handle handle, u32 event, void *data)
{
int i;
for (i = 0; i < num_comps; i++) {
if (comps[i].dev && comps[i].acpi_notify)
comps[i].acpi_notify(acpi_device_handle(comps[i].adev), event,
comps[i].dev);
}
}
EXPORT_SYMBOL_NS_GPL(hda_component_acpi_device_notify, SND_HDA_SCODEC_COMPONENT);
int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc,
struct hda_component *comps, int num_comps,
acpi_notify_handler handler, void *data)
{
bool support_notifications = false;
struct acpi_device *adev;
int ret;
int i;
adev = comps[0].adev;
if (!acpi_device_handle(adev))
return 0;
for (i = 0; i < num_comps; i++)
support_notifications = support_notifications ||
comps[i].acpi_notifications_supported;
if (support_notifications) {
ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY,
handler, data);
if (ret < 0) {
codec_warn(cdc, "Failed to install notify handler: %d\n", ret);
return 0;
}
codec_dbg(cdc, "Notify handler installed\n");
}
return 0;
}
EXPORT_SYMBOL_NS_GPL(hda_component_manager_bind_acpi_notifications, SND_HDA_SCODEC_COMPONENT);
void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc,
struct hda_component *comps,
acpi_notify_handler handler)
{
struct acpi_device *adev;
int ret;
adev = comps[0].adev;
if (!acpi_device_handle(adev))
return;
ret = acpi_remove_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY, handler);
if (ret < 0)
codec_warn(cdc, "Failed to uninstall notify handler: %d\n", ret);
}
EXPORT_SYMBOL_NS_GPL(hda_component_manager_unbind_acpi_notifications, SND_HDA_SCODEC_COMPONENT);
#endif /* ifdef CONFIG_ACPI */
void hda_component_manager_playback_hook(struct hda_component *comps, int num_comps, int action)
{
int i;
for (i = 0; i < num_comps; i++) {
if (comps[i].dev && comps[i].pre_playback_hook)
comps[i].pre_playback_hook(comps[i].dev, action);
}
for (i = 0; i < num_comps; i++) {
if (comps[i].dev && comps[i].playback_hook)
comps[i].playback_hook(comps[i].dev, action);
}
for (i = 0; i < num_comps; i++) {
if (comps[i].dev && comps[i].post_playback_hook)
comps[i].post_playback_hook(comps[i].dev, action);
}
}
EXPORT_SYMBOL_NS_GPL(hda_component_manager_playback_hook, SND_HDA_SCODEC_COMPONENT);
struct hda_scodec_match {
const char *bus;
const char *hid;
const char *match_str;
int index;
};
/* match the device name in a slightly relaxed manner */
static int hda_comp_match_dev_name(struct device *dev, void *data)
{
struct hda_scodec_match *p = data;
const char *d = dev_name(dev);
int n = strlen(p->bus);
char tmp[32];
/* check the bus name */
if (strncmp(d, p->bus, n))
return 0;
/* skip the bus number */
if (isdigit(d[n]))
n++;
/* the rest must be exact matching */
snprintf(tmp, sizeof(tmp), p->match_str, p->hid, p->index);
return !strcmp(d + n, tmp);
}
int hda_component_manager_init(struct hda_codec *cdc,
struct hda_component *comps, int count,
const char *bus, const char *hid,
const char *match_str,
const struct component_master_ops *ops)
{
struct device *dev = hda_codec_dev(cdc);
struct component_match *match = NULL;
struct hda_scodec_match *sm;
int ret, i;
for (i = 0; i < count; i++) {
sm = devm_kmalloc(dev, sizeof(*sm), GFP_KERNEL);
if (!sm)
return -ENOMEM;
sm->bus = bus;
sm->hid = hid;
sm->match_str = match_str;
sm->index = i;
comps[i].codec = cdc;
component_match_add(dev, &match, hda_comp_match_dev_name, sm);
}
ret = component_master_add_with_match(dev, ops, match);
if (ret)
codec_err(cdc, "Fail to register component aggregator %d\n", ret);
return ret;
}
EXPORT_SYMBOL_NS_GPL(hda_component_manager_init, SND_HDA_SCODEC_COMPONENT);
void hda_component_manager_free(struct hda_codec *cdc,
const struct component_master_ops *ops)
{
struct device *dev = hda_codec_dev(cdc);
component_master_del(dev, ops);
}
EXPORT_SYMBOL_NS_GPL(hda_component_manager_free, SND_HDA_SCODEC_COMPONENT);
MODULE_DESCRIPTION("HD Audio component binding library");
MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
MODULE_LICENSE("GPL");

59
sound/pci/hda/hda_component.h
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@ -23,3 +23,62 @@ struct hda_component {
void (*playback_hook)(struct device *dev, int action);
void (*post_playback_hook)(struct device *dev, int action);
};
#ifdef CONFIG_ACPI
void hda_component_acpi_device_notify(struct hda_component *comps, int num_comps,
acpi_handle handle, u32 event, void *data);
int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc,
struct hda_component *comps, int num_comps,
acpi_notify_handler handler, void *data);
void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc,
struct hda_component *comps,
acpi_notify_handler handler);
#else
static inline void hda_component_acpi_device_notify(struct hda_component *comps,
int num_comps,
acpi_handle handle,
u32 event,
void *data)
{
}
static inline int hda_component_manager_bind_acpi_notifications(struct hda_codec *cdc,
struct hda_component *comps,
int num_comps,
acpi_notify_handler handler,
void *data)
{
return 0;
}
static inline void hda_component_manager_unbind_acpi_notifications(struct hda_codec *cdc,
struct hda_component *comps,
acpi_notify_handler handler)
{
}
#endif /* ifdef CONFIG_ACPI */
void hda_component_manager_playback_hook(struct hda_component *comps, int num_comps,
int action);
int hda_component_manager_init(struct hda_codec *cdc,
struct hda_component *comps, int count,
const char *bus, const char *hid,
const char *match_str,
const struct component_master_ops *ops);
void hda_component_manager_free(struct hda_codec *cdc,
const struct component_master_ops *ops);
static inline int hda_component_manager_bind(struct hda_codec *cdc,
struct hda_component *comps)
{
return component_bind_all(hda_codec_dev(cdc), comps);
}
static inline void hda_component_manager_unbind(struct hda_codec *cdc,
struct hda_component *comps)
{
component_unbind_all(hda_codec_dev(cdc), comps);
}

146
sound/pci/hda/patch_realtek.c
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@ -133,7 +133,6 @@ struct alc_spec {
u8 alc_mute_keycode_map[1];
/* component binding */
struct component_match *match;
struct hda_component comps[HDA_MAX_COMPONENTS];
};
@ -6717,91 +6716,30 @@ static void alc287_fixup_legion_15imhg05_speakers(struct hda_codec *codec,
}
}
#ifdef CONFIG_ACPI
static void comp_acpi_device_notify(acpi_handle handle, u32 event, void *data)
{
struct hda_codec *cdc = data;
struct alc_spec *spec = cdc->spec;
int i;
codec_info(cdc, "ACPI Notification %d\n", event);
for (i = 0; i < HDA_MAX_COMPONENTS; i++) {
if (spec->comps[i].dev && spec->comps[i].acpi_notify)
spec->comps[i].acpi_notify(acpi_device_handle(spec->comps[i].adev), event,
spec->comps[i].dev);
}
hda_component_acpi_device_notify(spec->comps, ARRAY_SIZE(spec->comps),
handle, event, data);
}
static int comp_bind_acpi(struct device *dev)
{
struct hda_codec *cdc = dev_to_hda_codec(dev);
struct alc_spec *spec = cdc->spec;
bool support_notifications = false;
struct acpi_device *adev;
int ret;
int i;
adev = spec->comps[0].adev;
if (!acpi_device_handle(adev))
return 0;
for (i = 0; i < HDA_MAX_COMPONENTS; i++)
support_notifications = support_notifications ||
spec->comps[i].acpi_notifications_supported;
if (support_notifications) {
ret = acpi_install_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY,
comp_acpi_device_notify, cdc);
if (ret < 0) {
codec_warn(cdc, "Failed to install notify handler: %d\n", ret);
return 0;
}
codec_dbg(cdc, "Notify handler installed\n");
}
return 0;
}
static void comp_unbind_acpi(struct device *dev)
{
struct hda_codec *cdc = dev_to_hda_codec(dev);
struct alc_spec *spec = cdc->spec;
struct acpi_device *adev;
int ret;
adev = spec->comps[0].adev;
if (!acpi_device_handle(adev))
return;
ret = acpi_remove_notify_handler(adev->handle, ACPI_DEVICE_NOTIFY,
comp_acpi_device_notify);
if (ret < 0)
codec_warn(cdc, "Failed to uninstall notify handler: %d\n", ret);
}
#else
static int comp_bind_acpi(struct device *dev)
{
return 0;
}
static void comp_unbind_acpi(struct device *dev)
{
}
#endif
static int comp_bind(struct device *dev)
{
struct hda_codec *cdc = dev_to_hda_codec(dev);
struct alc_spec *spec = cdc->spec;
int ret;
ret = component_bind_all(dev, spec->comps);
ret = hda_component_manager_bind(cdc, spec->comps);
if (ret)
return ret;
return comp_bind_acpi(dev);
return hda_component_manager_bind_acpi_notifications(cdc,
spec->comps, ARRAY_SIZE(spec->comps),
comp_acpi_device_notify, cdc);
}
static void comp_unbind(struct device *dev)
@ -6809,8 +6747,8 @@ static void comp_unbind(struct device *dev)
struct hda_codec *cdc = dev_to_hda_codec(dev);
struct alc_spec *spec = cdc->spec;
comp_unbind_acpi(dev);
component_unbind_all(dev, spec->comps);
hda_component_manager_unbind_acpi_notifications(cdc, spec->comps, comp_acpi_device_notify);
hda_component_manager_unbind(cdc, spec->comps);
}
static const struct component_master_ops comp_master_ops = {
@ -6822,78 +6760,27 @@ static void comp_generic_playback_hook(struct hda_pcm_stream *hinfo, struct hda_
struct snd_pcm_substream *sub, int action)
{
struct alc_spec *spec = cdc->spec;
int i;
for (i = 0; i < HDA_MAX_COMPONENTS; i++) {
if (spec->comps[i].dev && spec->comps[i].pre_playback_hook)
spec->comps[i].pre_playback_hook(spec->comps[i].dev, action);
}
for (i = 0; i < HDA_MAX_COMPONENTS; i++) {
if (spec->comps[i].dev && spec->comps[i].playback_hook)
spec->comps[i].playback_hook(spec->comps[i].dev, action);
}
for (i = 0; i < HDA_MAX_COMPONENTS; i++) {
if (spec->comps[i].dev && spec->comps[i].post_playback_hook)
spec->comps[i].post_playback_hook(spec->comps[i].dev, action);
}
}
struct scodec_dev_name {
const char *bus;
const char *hid;
const char *match_str;
int index;
};
/* match the device name in a slightly relaxed manner */
static int comp_match_dev_name(struct device *dev, void *data)
{
struct scodec_dev_name *p = data;
const char *d = dev_name(dev);
int n = strlen(p->bus);
char tmp[32];
/* check the bus name */
if (strncmp(d, p->bus, n))
return 0;
/* skip the bus number */
if (isdigit(d[n]))
n++;
/* the rest must be exact matching */
snprintf(tmp, sizeof(tmp), p->match_str, p->hid, p->index);
return !strcmp(d + n, tmp);
hda_component_manager_playback_hook(spec->comps, ARRAY_SIZE(spec->comps), action);
}
static void comp_generic_fixup(struct hda_codec *cdc, int action, const char *bus,
const char *hid, const char *match_str, int count)
{
struct device *dev = hda_codec_dev(cdc);
struct alc_spec *spec = cdc->spec;
struct scodec_dev_name *rec;
int ret, i;
int ret;
switch (action) {
case HDA_FIXUP_ACT_PRE_PROBE:
for (i = 0; i < count; i++) {
rec = devm_kmalloc(dev, sizeof(*rec), GFP_KERNEL);
if (!rec)
return;
rec->bus = bus;
rec->hid = hid;
rec->match_str = match_str;
rec->index = i;
spec->comps[i].codec = cdc;
component_match_add(dev, &spec->match,
comp_match_dev_name, rec);
}
ret = component_master_add_with_match(dev, &comp_master_ops, spec->match);
ret = hda_component_manager_init(cdc, spec->comps, count, bus, hid,
match_str, &comp_master_ops);
if (ret)
codec_err(cdc, "Fail to register component aggregator %d\n", ret);
else
spec->gen.pcm_playback_hook = comp_generic_playback_hook;
return;
spec->gen.pcm_playback_hook = comp_generic_playback_hook;
break;
case HDA_FIXUP_ACT_FREE:
component_master_del(dev, &comp_master_ops);
hda_component_manager_free(cdc, &comp_master_ops);
break;
}
}
@ -12568,6 +12455,7 @@ MODULE_DEVICE_TABLE(hdaudio, snd_hda_id_realtek);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Realtek HD-audio codec");
MODULE_IMPORT_NS(SND_HDA_SCODEC_COMPONENT);
static struct hda_codec_driver realtek_driver = {
.id = snd_hda_id_realtek,