platform/surface/surface_aggregator_registry.c

1 // SPDX-License-Identifier: GPL-2.0+
5  * Registry for non-platform/non-ACPI SSAM client devices, i.e. devices that
6  * cannot be auto-detected. Provides device-hubs and performs instantiation
9  * Copyright (C) 2020-2022 Maximilian Luz <luzmaximilian@gmail.com>
23 /* -- Device registry. ------------------------------------------------------ */
28  * function, each encoded as two-digit hexadecimal, separated by ':'. In other
33  * Where, 'dd', 'cc', 'tt', 'ii', and 'ff' are the two-digit hexadecimal
44 	.name = "ssam:00:00:01:0e:00",
48 /* Base device hub (devices attached to Surface Book 3 base). */
66 /* Secondary battery (Surface Book 3). */
72 /* Platform profile / performance-mode device without a fan. */
78 /* Platform profile / performance-mode device with a fan, such that
104 /* Tablet-mode switch via KIP subsystem. */
106 	.name = "ssam:01:0e:01:00:01",
110 /* DTX / detachment-system device (Surface Book 3). */
212 /* HID device instance 5 (KIP hub, type-cover firmware update). */
218 /* Tablet-mode switch via POS subsystem. */
225  * Devices for 5th- and 6th-generations models:
226  * - Surface Book 2,
227  * - Surface Laptop 1 and 2,
228  * - Surface Pro 5 and 6.
236 /* Devices for Surface Book 3. */
394 /* -- SSAM platform/meta-hub driver. ---------------------------------------- */
418 	/* Surface Book 2 */
421 	/* Surface Book 3 */
480 	nodes = (const struct software_node **)acpi_device_get_match_data(&pdev->dev);  in ssam_platform_hub_probe()
484 			return -ENODEV;  in ssam_platform_hub_probe()
489 			return -ENODEV;  in ssam_platform_hub_probe()
491 		nodes = (const struct software_node **)match->data;  in ssam_platform_hub_probe()
493 			return -ENODEV;  in ssam_platform_hub_probe()
503 	ctrl = ssam_client_bind(&pdev->dev);  in ssam_platform_hub_probe()
505 		return PTR_ERR(ctrl) == -ENODEV ? -EPROBE_DEFER : PTR_ERR(ctrl);  in ssam_platform_hub_probe()
514 		return -ENOENT;  in ssam_platform_hub_probe()
517 	set_secondary_fwnode(&pdev->dev, root);  in ssam_platform_hub_probe()
519 	status = __ssam_register_clients(&pdev->dev, ctrl, root);  in ssam_platform_hub_probe()
521 		set_secondary_fwnode(&pdev->dev, NULL);  in ssam_platform_hub_probe()
533 	ssam_remove_clients(&pdev->dev);  in ssam_platform_hub_remove()
534 	set_secondary_fwnode(&pdev->dev, NULL);  in ssam_platform_hub_remove()
551 MODULE_DESCRIPTION("Device-registry for Surface System Aggregator Module");