With the conditional blocks, it may be useful to terminate
the hardware detection from the configuration. Introduce
'Error' keyword for the master UCM configuration file.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
We need to define the common shared configuration like for multiple
HDMI devices or so. Substitute the whole merged configuration tree
including identifiers.
Fixes: https://github.com/alsa-project/alsa-lib/issues/67
Fixes: dcef48f13d
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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>
There is a case where the original array has already new indexes
(the merged array is placed before the original nodes).
Set the temporary index string identifiers to unique strings.
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 ${CardIdByName:HDA Intel PCH#0})
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
There is a big issue to validate all possible configuration paths.
Let create ucm2/ucm.conf file which describe the lookups. It may
be also customized later to follow the kernel-side development.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Syntax:
DefineRegex.VariableName {
String "something to match"
Regex "(me)thi(ng)"
}
Result:
- configuration variable "VariableName" is equal to "mething"
- configuration variable "VariableName1" is equal to "me"
- configuration variable "VariableName2" is equal to "ng"
Notes:
The "Flags" string in the DefineRegex compound may specify
the compilation flags (e = extended, i = ignore case,
s = no substitutes, n = newline). See 'man 3 regex' for
more details.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
It may be useful for the library files to use the runtime configuration
variables.
Example:
Define.Var1 "hw:${CardId},2"
Value.PlaybackPCM "${var:Var1}"
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
