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platform/x86: dell-smbios: Add helper for checking supported class

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Add helper that returns true if smbios command class is supported.

Signed-off-by: Lyndon Sanche <lsanche@lyndeno.ca>
Link: https://lore.kernel.org/r/20240529174843.13226-2-lsanche@lyndeno.ca
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Lyndon Sanche 2024-05-29 11:47:44 -06:00 committed by Ilpo Järvinen
parent 46de513068
commit 586d7e4b24
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2 changed files with 10 additions and 0 deletions
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9
drivers/platform/x86/dell/dell-smbios-base.c
View file

@ -350,6 +350,15 @@ void dell_laptop_call_notifier(unsigned long action, void *data)
}
EXPORT_SYMBOL_GPL(dell_laptop_call_notifier);
bool dell_smbios_class_is_supported(u16 class)
{
/* Classes over 30 always unsupported */
if (class > 30)
return false;
return da_supported_commands & (1 << class);
}
EXPORT_SYMBOL_GPL(dell_smbios_class_is_supported);
static void __init parse_da_table(const struct dmi_header *dm)
{
/* Final token is a terminator, so we don't want to copy it */

1
drivers/platform/x86/dell/dell-smbios.h
View file

@ -73,6 +73,7 @@ enum dell_laptop_notifier_actions {
int dell_laptop_register_notifier(struct notifier_block *nb);
int dell_laptop_unregister_notifier(struct notifier_block *nb);
void dell_laptop_call_notifier(unsigned long action, void *data);
bool dell_smbios_class_is_supported(u16 class);
/* for the supported backends */
#ifdef CONFIG_DELL_SMBIOS_WMI