Commit a48e2338 authored by Mattias Jacobsson's avatar Mattias Jacobsson Committed by Andy Shevchenko

platform/x86: wmi: add context pointer field to struct wmi_device_id

When using wmi_install_notify_handler() to initialize a WMI handler a
data pointer can be supplied which will be passed on to the notification
handler. No similar feature exist when handling WMI events via struct
wmi_driver.

Add a context field pointer to struct wmi_device_id and add a function
find_guid_context() to retrieve that context pointer.
Signed-off-by: default avatarMattias Jacobsson <2pi@mok.nu>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
parent 3e58167a
...@@ -146,6 +146,28 @@ static bool find_guid(const char *guid_string, struct wmi_block **out) ...@@ -146,6 +146,28 @@ static bool find_guid(const char *guid_string, struct wmi_block **out)
return false; return false;
} }
static const void *find_guid_context(struct wmi_block *wblock,
struct wmi_driver *wdriver)
{
const struct wmi_device_id *id;
uuid_le guid_input;
if (wblock == NULL || wdriver == NULL)
return NULL;
if (wdriver->id_table == NULL)
return NULL;
id = wdriver->id_table;
while (*id->guid_string) {
if (uuid_le_to_bin(id->guid_string, &guid_input))
continue;
if (!memcmp(wblock->gblock.guid, &guid_input, 16))
return id->context;
id++;
}
return NULL;
}
static int get_subobj_info(acpi_handle handle, const char *pathname, static int get_subobj_info(acpi_handle handle, const char *pathname,
struct acpi_device_info **info) struct acpi_device_info **info)
{ {
......
...@@ -798,6 +798,7 @@ struct tee_client_device_id { ...@@ -798,6 +798,7 @@ struct tee_client_device_id {
*/ */
struct wmi_device_id { struct wmi_device_id {
const char guid_string[UUID_STRING_LEN+1]; const char guid_string[UUID_STRING_LEN+1];
const void *context;
}; };
#endif /* LINUX_MOD_DEVICETABLE_H */ #endif /* LINUX_MOD_DEVICETABLE_H */
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