Recent ucm-conf changes introduce checks like this one in various places:
If.mspk {
Condition {
Type String
Empty "${var:MonoSpeaker}"
}
True ...
False ...
}
The 'Empty "${var:MonoSpeaker}"' part can only every succeed if we do:
Define.MonoSpeaker ""
But so far that would result in an error like this one:
ALSA lib ucm_subs.c:367:(uc_mgr_get_substituted_value) variable '${var:MonoSpeaker}' is not defined in this context!
ALSA lib main.c:983:(snd_use_case_mgr_open) error: failed to import cht-bsw-rt5672 use case configuration -22
alsaucm: error failed to open sound card cht-bsw-rt5672: Invalid argument
This commit fixes this by allowing empty values for "${var:...}"
substitutions.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The syntax is ${CardNumberByName:CARDNAME[#INDEX]}.
The CARDNAME is the ALSA's soundcard name (short form).
The INDEX is the instance (0 = first, 1 = second etc.).
Example: ${CardNumberByName:HDA Intel PCH}
(which is identical to ${CardNumberByName:HDA Intel PCH#0})
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Example (set variable 'Module' to the kernel module name for the given card):
Define.SysfsPath "class/sound/card${CardNumber}/device/driver"
Define.Module "${sys:$SysfsPath}"
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
It may be useful to ignore the errors where the environment
or sysfs values are not defined for the specific hardware.
Enhance substitution for 'syntax 3' so $${} substitution
means ignore the errors (return an empty string).
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The syntax is ${CardIdByName:CARDNAME[#INDEX]}.
The CARDNAME is the ALSA's soundcard name (short form).
The INDEX is the instance (0 = first, 1 = second etc.).
Example: ${CardIdByName:HDA Intel PCH}
(which is identical to ${CardIdByName:HDA Intel PCH#0})
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
It may be useful for the library files to use the runtime configuration
variables.
Example:
Define.Var1 "hw:${CardId},2"
Value.PlaybackPCM "${var:Var1}"
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Since the UCM profiles for all Bay- and Cherry-Trail SST cards have been
moved over to UCM2, parsing them fails with:
ALSA lib ucm_subs.c:220:(uc_mgr_get_substituted_value) variable '${CardComponents}' is not defined in this context!
This completely breaks audio support on all Bay- and Cherry-Trail devices.
This is caused by these non-SOF ASoC using cards having an empty
CardComponents list. Which in itself is fine, but is rejected by
the ucm_subs.c code. This commit changes the ucm_subs code to accept
an empty string as a valid value for CardComponents restoring audio
functionality on these boards.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
The syntax is simple:
If./any-if-identificator/ {
Condition {
Type /type_here/
/optional defines/
}
True {
/block used when condition is evaluated as true/
}
False {
/block used when condition is evaluated as false/
}
}
The Type "ControlExists" is implemented:
Condition {
Type ControlExists
Device "hw:${CardId}"
Control "iface=CARD,name='Headphone Jack'"
}
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
