On Wed, 14 Oct 2020 07:54:15 +0200,
Randy Dunlap wrote:
>
> On 10/13/20 10:16 PM, Udo van den Heuvel wrote:
> > On 14-10-2020 07:07, Randy Dunlap wrote:
> >> On 10/13/20 9:56 PM, Udo van den Heuvel wrote:
> >
> >>> I.e.: it looks like I will lose some funcionality when I disable
> >>> SND_HDA_CODEC_REALTEK.
> >>
> >> OK. At present you can't have it both ways, i.e., SND_HDA_CODEC_REALTEK
> >> with no LEDS. That driver apparently wants LEDS.
> >
> > Thanks but why have I gone for years without LEDS?
> > I do not need LEDS, I do not want LEDS, I do not have LEDS (that are
> > visible, usable, etc).
> >
> > Please make this selectable instead of forcing more bulk into my kernel.
> >
> > Kind regards,
> > Udo
>
> Hi Takashi,
>
> Regarding
> commit 7cdf8c49b1df0a385db06c4f9a5ba1b16510fdcc
> Author: Takashi Iwai <tiwai@xxxxxxx>
> Date: Thu Jun 18 13:08:31 2020 +0200
> ALSA: hda: generic: Add a helper for mic-mute LED with LED classdev
>
> and this Kconfig entry:
>
> config SND_HDA_CODEC_REALTEK
> tristate "Build Realtek HD-audio codec support"
> select SND_HDA_GENERIC
> select SND_HDA_GENERIC_LEDS
>
> it seems that LED support is not always wanted (please see above).
> I.e., user(s) would like to build a kernel without LED support at all.
>
> Can you make it a build option?
Something like this?
Takashi
---
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1390,6 +1390,11 @@ menuconfig EXPERT
environments which can tolerate a "non-standard" kernel.
Only use this if you really know what you are doing.
+config SUPERHACKER
+ bool "Rule the world" if EXPERT
+ help
+ You are allowed to break things at your own risk.
+
config UID16
bool "Enable 16-bit UID system calls" if EXPERT
depends on HAVE_UID16 && MULTIUSER
--- a/sound/pci/hda/Kconfig
+++ b/sound/pci/hda/Kconfig
@@ -94,7 +94,7 @@ config SND_HDA_PATCH_LOADER
config SND_HDA_CODEC_REALTEK
tristate "Build Realtek HD-audio codec support"
select SND_HDA_GENERIC
- select SND_HDA_GENERIC_LEDS
+ select SND_HDA_GENERIC_LEDS if !SUPERHACKER
help
Say Y or M here to include Realtek HD-audio codec support in
snd-hda-intel driver, such as ALC880.
@@ -115,7 +115,7 @@ comment "Set to Y if you want auto-loading the codec driver"
config SND_HDA_CODEC_SIGMATEL
tristate "Build IDT/Sigmatel HD-audio codec support"
select SND_HDA_GENERIC
- select SND_HDA_GENERIC_LEDS
+ select SND_HDA_GENERIC_LEDS if !SUPERHACKER
help
Say Y or M here to include IDT (Sigmatel) HD-audio codec support in
snd-hda-intel driver, such as STAC9200.
@@ -160,7 +160,7 @@ comment "Set to Y if you want auto-loading the codec driver"
config SND_HDA_CODEC_CONEXANT
tristate "Build Conexant HD-audio codec support"
select SND_HDA_GENERIC
- select SND_HDA_GENERIC_LEDS
+ select SND_HDA_GENERIC_LEDS if !SUPERHACKER
help
Say Y or M here to include Conexant HD-audio codec support in
snd-hda-intel driver, such as CX20549.
--- a/sound/pci/hda/hda_generic.h
+++ b/sound/pci/hda/hda_generic.h
@@ -354,11 +354,29 @@ unsigned int snd_hda_gen_path_power_filter(struct hda_codec *codec,
void snd_hda_gen_stream_pm(struct hda_codec *codec, hda_nid_t nid, bool on);
int snd_hda_gen_fix_pin_power(struct hda_codec *codec, hda_nid_t pin);
+#ifdef CONFIG_SND_HDA_GENERIC_LEDS
int snd_hda_gen_add_mute_led_cdev(struct hda_codec *codec,
int (*callback)(struct led_classdev *,
enum led_brightness));
int snd_hda_gen_add_micmute_led_cdev(struct hda_codec *codec,
int (*callback)(struct led_classdev *,
enum led_brightness));
+#else /* CONFIG_SND_HDA_GENERIC_LEDS */
+static inline int
+snd_hda_gen_add_mute_led_cdev(struct hda_codec *codec,
+ int (*callback)(struct led_classdev *,
+ enum led_brightness))
+{
+ return -ENODEV;
+}
+
+static inline int
+snd_hda_gen_add_micmute_led_cdev(struct hda_codec *codec,
+ int (*callback)(struct led_classdev *,
+ enum led_brightness))
+{
+ return -ENODEV;
+}
+#endif /* CONFIG_SND_HDA_GENERIC_LEDS */
#endif /* __SOUND_HDA_GENERIC_H */
