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clevo_acpi: Add acpi evaluate and event enable functionality

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This commit is contained in:
Christoffer Sandberg 2020-11-17 17:27:03 +01:00
parent fe41e0d039
commit 6d76c68eb4
1 changed files with 59 additions and 3 deletions
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62
src/clevo_acpi.c
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@ -5,11 +5,64 @@
#define DRIVER_NAME "clevo_acpi"
#define CLEVO_ACPI_RESOURCE_HID "CLV0001"
#define CLEVO_ACPI_DSM_UUID "93f224e4-fbdc-4bbf-add6-db71bdc0afad"
struct clevo_acpi_driver_data_t {
struct acpi_device *device;
};
static u32 clevo_acpi_evaluate(struct acpi_device *device, u8 cmd, u32 arg)
{
u32 status;
u32 result;
acpi_handle handle;
u64 dsm_rev_dummy = 0x00; // Dummy 0 value since not used
u64 dsm_func = cmd;
// Integer package data for argument
union acpi_object dsm_argv4_package_data[] = {
{
.integer.type = ACPI_TYPE_INTEGER,
.integer.value = arg
}
};
// Package argument
union acpi_object dsm_argv4 = {
.package.type = ACPI_TYPE_PACKAGE,
.package.count = 1,
.package.elements = dsm_argv4_package_data
};
union acpi_object *out_obj;
guid_t clevo_acpi_dsm_uuid;
status = guid_parse(CLEVO_ACPI_DSM_UUID, &clevo_acpi_dsm_uuid);
if (status < 0)
return -ENOENT;
handle = acpi_device_handle(device);
if (handle == NULL)
return -ENODEV;
out_obj = acpi_evaluate_dsm(handle, &clevo_acpi_dsm_uuid, dsm_rev_dummy, dsm_func, &dsm_argv4);
if (!out_obj) {
pr_err("failed to evaluate _DSM\n");
result = 0;
} else {
if (out_obj->type == ACPI_TYPE_INTEGER) {
result = (u32) out_obj->integer.value;
} else {
pr_err("unknown output from _DSM\n");
result = 0;
}
}
ACPI_FREE(out_obj);
return result;
}
static int clevo_acpi_add(struct acpi_device *device)
{
struct clevo_acpi_driver_data_t *driver_data;
@ -20,20 +73,23 @@ static int clevo_acpi_add(struct acpi_device *device)
driver_data->device = device;
pr_debug("acpi add");
pr_debug("acpi add\n");
pr_debug("enable acpi events\n");
clevo_acpi_evaluate(device, 0x46, 0);
return 0;
}
static int clevo_acpi_remove(struct acpi_device *device)
{
pr_debug("acpi remove");
pr_debug("acpi remove\n");
return 0;
}
static void clevo_acpi_notify(struct acpi_device *device, u32 event)
{
pr_debug("event: %0#10x", event);
pr_debug("event: %0#10x\n", event);
}
#ifdef CONFIG_PM