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Commit c5738ddd authored by Zhang Rui's avatar Zhang Rui
Browse files

Thermal: int3400 thermal: add capability to detect supporting UUIDs



Signed-off-by: default avatarZhang Rui <rui.zhang@intel.com>
parent 816cab93
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+69 −0
Original line number Original line Diff line number Diff line
@@ -41,14 +41,79 @@ struct trt {
	u64 reverved4;
	u64 reverved4;
};
};


enum int3400_thermal_uuid {
	INT3400_THERMAL_PASSIVE_1,
	INT3400_THERMAL_PASSIVE_2,
	INT3400_THERMAL_ACTIVE,
	INT3400_THERMAL_CRITICAL,
	INT3400_THERMAL_COOLING_MODE,
	INT3400_THERMAL_MAXIMUM_UUID,
};

static u8 *int3400_thermal_uuids[INT3400_THERMAL_MAXIMUM_UUID] = {
	"42A441D6-AE6A-462b-A84B-4A8CE79027D3",
	"9E04115A-AE87-4D1C-9500-0F3E340BFE75",
	"3A95C389-E4B8-4629-A526-C52C88626BAE",
	"97C68AE7-15FA-499c-B8C9-5DA81D606E0A",
	"16CAF1B7-DD38-40ed-B1C1-1B8A1913D531",
};

struct int3400_thermal_priv {
struct int3400_thermal_priv {
	struct acpi_device *adev;
	struct acpi_device *adev;
	int art_count;
	int art_count;
	struct art *arts;
	struct art *arts;
	int trt_count;
	int trt_count;
	struct trt *trts;
	struct trt *trts;
	u8 uuid_bitmap;
};
};


static int int3400_thermal_get_uuids(struct int3400_thermal_priv *priv)
{
	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER, NULL};
	union acpi_object *obja, *objb;
	int i, j;
	int result = 0;
	acpi_status status;

	status = acpi_evaluate_object(priv->adev->handle, "IDSP", NULL, &buf);
	if (ACPI_FAILURE(status))
		return -ENODEV;

	obja = (union acpi_object *)buf.pointer;
	if (obja->type != ACPI_TYPE_PACKAGE) {
		result = -EINVAL;
		goto end;
	}

	for (i = 0; i < obja->package.count; i++) {
		objb = &obja->package.elements[i];
		if (objb->type != ACPI_TYPE_BUFFER) {
			result = -EINVAL;
			goto end;
		}

		/* UUID must be 16 bytes */
		if (objb->buffer.length != 16) {
			result = -EINVAL;
			goto end;
		}

		for (j = 0; j < INT3400_THERMAL_MAXIMUM_UUID; j++) {
			u8 uuid[16];

			acpi_str_to_uuid(int3400_thermal_uuids[j], uuid);
			if (!strncmp(uuid, objb->buffer.pointer, 16)) {
				priv->uuid_bitmap |= (1 << j);
				break;
			}
		}
	}

end:
	kfree(buf.pointer);
	return result;
}

static int parse_art(struct int3400_thermal_priv *priv)
static int parse_art(struct int3400_thermal_priv *priv)
{
{
	acpi_handle handle = priv->adev->handle;
	acpi_handle handle = priv->adev->handle;
@@ -193,6 +258,10 @@ static int int3400_thermal_probe(struct platform_device *pdev)


	priv->adev = adev;
	priv->adev = adev;


	result = int3400_thermal_get_uuids(priv);
	if (result)
		goto free_priv;

	result = parse_art(priv);
	result = parse_art(priv);
	if (result)
	if (result)
		goto free_priv;
		goto free_priv;