Thermal: int3400 thermal: add capability to detect supporting UUIDs (c5738ddd) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/thermal/int340x_thermal/int3400_thermal.c

+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;