| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Maximilian Luz | 1277 | 100.00% | 25 | 100.00% |
| Total | 1277 | 25 |
// SPDX-License-Identifier: GPL-2.0+ /* * Surface System Aggregator Module (SSAM) client device registry. * * Registry for non-platform/non-ACPI SSAM client devices, i.e. devices that * cannot be auto-detected. Provides device-hubs and performs instantiation * for these devices. * * Copyright (C) 2020-2022 Maximilian Luz <luzmaximilian@gmail.com> */ #include <linux/acpi.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/property.h> #include <linux/types.h> #include <linux/surface_aggregator/device.h> /* -- Device registry. ------------------------------------------------------ */ /* * SSAM device names follow the SSAM module alias, meaning they are prefixed * with 'ssam:', followed by domain, category, target ID, instance ID, and * function, each encoded as two-digit hexadecimal, separated by ':'. In other * words, it follows the scheme * * ssam:dd:cc:tt:ii:ff * * Where, 'dd', 'cc', 'tt', 'ii', and 'ff' are the two-digit hexadecimal * values mentioned above, respectively. */ /* Root node. */ static const struct software_node ssam_node_root = { .name = "ssam_platform_hub", }; /* KIP device hub (connects keyboard cover devices on Surface Pro 8). */ static const struct software_node ssam_node_hub_kip = { .name = "ssam:00:00:01:0e:00", .parent = &ssam_node_root, }; /* Base device hub (devices attached to Surface Book 3 base). */ static const struct software_node ssam_node_hub_base = { .name = "ssam:00:00:02:11:00", .parent = &ssam_node_root, }; /* AC adapter. */ static const struct software_node ssam_node_bat_ac = { .name = "ssam:01:02:01:01:01", .parent = &ssam_node_root, }; /* Primary battery. */ static const struct software_node ssam_node_bat_main = { .name = "ssam:01:02:01:01:00", .parent = &ssam_node_root, }; /* Secondary battery (Surface Book 3). */ static const struct software_node ssam_node_bat_sb3base = { .name = "ssam:01:02:02:01:00", .parent = &ssam_node_hub_base, }; /* Platform profile / performance-mode device. */ static const struct software_node ssam_node_tmp_pprof = { .name = "ssam:01:03:01:00:01", .parent = &ssam_node_root, }; /* Tablet-mode switch via KIP subsystem. */ static const struct software_node ssam_node_kip_tablet_switch = { .name = "ssam:01:0e:01:00:01", .parent = &ssam_node_root, }; /* DTX / detachment-system device (Surface Book 3). */ static const struct software_node ssam_node_bas_dtx = { .name = "ssam:01:11:01:00:00", .parent = &ssam_node_root, }; /* HID keyboard (SAM, TID=1). */ static const struct software_node ssam_node_hid_sam_keyboard = { .name = "ssam:01:15:01:01:00", .parent = &ssam_node_root, }; /* HID pen stash (SAM, TID=1; pen taken / stashed away evens). */ static const struct software_node ssam_node_hid_sam_penstash = { .name = "ssam:01:15:01:02:00", .parent = &ssam_node_root, }; /* HID touchpad (SAM, TID=1). */ static const struct software_node ssam_node_hid_sam_touchpad = { .name = "ssam:01:15:01:03:00", .parent = &ssam_node_root, }; /* HID device instance 6 (SAM, TID=1, HID sensor collection). */ static const struct software_node ssam_node_hid_sam_sensors = { .name = "ssam:01:15:01:06:00", .parent = &ssam_node_root, }; /* HID device instance 7 (SAM, TID=1, UCM UCSI HID client). */ static const struct software_node ssam_node_hid_sam_ucm_ucsi = { .name = "ssam:01:15:01:07:00", .parent = &ssam_node_root, }; /* HID system controls (SAM, TID=1). */ static const struct software_node ssam_node_hid_sam_sysctrl = { .name = "ssam:01:15:01:08:00", .parent = &ssam_node_root, }; /* HID keyboard. */ static const struct software_node ssam_node_hid_main_keyboard = { .name = "ssam:01:15:02:01:00", .parent = &ssam_node_root, }; /* HID touchpad. */ static const struct software_node ssam_node_hid_main_touchpad = { .name = "ssam:01:15:02:03:00", .parent = &ssam_node_root, }; /* HID device instance 5 (unknown HID device). */ static const struct software_node ssam_node_hid_main_iid5 = { .name = "ssam:01:15:02:05:00", .parent = &ssam_node_root, }; /* HID keyboard (base hub). */ static const struct software_node ssam_node_hid_base_keyboard = { .name = "ssam:01:15:02:01:00", .parent = &ssam_node_hub_base, }; /* HID touchpad (base hub). */ static const struct software_node ssam_node_hid_base_touchpad = { .name = "ssam:01:15:02:03:00", .parent = &ssam_node_hub_base, }; /* HID device instance 5 (unknown HID device, base hub). */ static const struct software_node ssam_node_hid_base_iid5 = { .name = "ssam:01:15:02:05:00", .parent = &ssam_node_hub_base, }; /* HID device instance 6 (unknown HID device, base hub). */ static const struct software_node ssam_node_hid_base_iid6 = { .name = "ssam:01:15:02:06:00", .parent = &ssam_node_hub_base, }; /* HID keyboard (KIP hub). */ static const struct software_node ssam_node_hid_kip_keyboard = { .name = "ssam:01:15:02:01:00", .parent = &ssam_node_hub_kip, }; /* HID pen stash (KIP hub; pen taken / stashed away evens). */ static const struct software_node ssam_node_hid_kip_penstash = { .name = "ssam:01:15:02:02:00", .parent = &ssam_node_hub_kip, }; /* HID touchpad (KIP hub). */ static const struct software_node ssam_node_hid_kip_touchpad = { .name = "ssam:01:15:02:03:00", .parent = &ssam_node_hub_kip, }; /* HID device instance 5 (KIP hub, type-cover firmware update). */ static const struct software_node ssam_node_hid_kip_fwupd = { .name = "ssam:01:15:02:05:00", .parent = &ssam_node_hub_kip, }; /* Tablet-mode switch via POS subsystem. */ static const struct software_node ssam_node_pos_tablet_switch = { .name = "ssam:01:26:01:00:01", .parent = &ssam_node_root, }; /* * Devices for 5th- and 6th-generations models: * - Surface Book 2, * - Surface Laptop 1 and 2, * - Surface Pro 5 and 6. */ static const struct software_node *ssam_node_group_gen5[] = { &ssam_node_root, &ssam_node_tmp_pprof, NULL, }; /* Devices for Surface Book 3. */ static const struct software_node *ssam_node_group_sb3[] = { &ssam_node_root, &ssam_node_hub_base, &ssam_node_bat_ac, &ssam_node_bat_main, &ssam_node_bat_sb3base, &ssam_node_tmp_pprof, &ssam_node_bas_dtx, &ssam_node_hid_base_keyboard, &ssam_node_hid_base_touchpad, &ssam_node_hid_base_iid5, &ssam_node_hid_base_iid6, NULL, }; /* Devices for Surface Laptop 3 and 4. */ static const struct software_node *ssam_node_group_sl3[] = { &ssam_node_root, &ssam_node_bat_ac, &ssam_node_bat_main, &ssam_node_tmp_pprof, &ssam_node_hid_main_keyboard, &ssam_node_hid_main_touchpad, &ssam_node_hid_main_iid5, NULL, }; /* Devices for Surface Laptop Studio. */ static const struct software_node *ssam_node_group_sls[] = { &ssam_node_root, &ssam_node_bat_ac, &ssam_node_bat_main, &ssam_node_tmp_pprof, &ssam_node_pos_tablet_switch, &ssam_node_hid_sam_keyboard, &ssam_node_hid_sam_penstash, &ssam_node_hid_sam_touchpad, &ssam_node_hid_sam_sensors, &ssam_node_hid_sam_ucm_ucsi, &ssam_node_hid_sam_sysctrl, NULL, }; /* Devices for Surface Laptop Go. */ static const struct software_node *ssam_node_group_slg1[] = { &ssam_node_root, &ssam_node_bat_ac, &ssam_node_bat_main, &ssam_node_tmp_pprof, NULL, }; /* Devices for Surface Pro 7 and Surface Pro 7+. */ static const struct software_node *ssam_node_group_sp7[] = { &ssam_node_root, &ssam_node_bat_ac, &ssam_node_bat_main, &ssam_node_tmp_pprof, NULL, }; static const struct software_node *ssam_node_group_sp8[] = { &ssam_node_root, &ssam_node_hub_kip, &ssam_node_bat_ac, &ssam_node_bat_main, &ssam_node_tmp_pprof, &ssam_node_kip_tablet_switch, &ssam_node_hid_kip_keyboard, &ssam_node_hid_kip_penstash, &ssam_node_hid_kip_touchpad, &ssam_node_hid_kip_fwupd, &ssam_node_hid_sam_sensors, &ssam_node_hid_sam_ucm_ucsi, NULL, }; /* -- SSAM platform/meta-hub driver. ---------------------------------------- */ static const struct acpi_device_id ssam_platform_hub_match[] = { /* Surface Pro 4, 5, and 6 (OMBR < 0x10) */ { "MSHW0081", (unsigned long)ssam_node_group_gen5 }, /* Surface Pro 6 (OMBR >= 0x10) */ { "MSHW0111", (unsigned long)ssam_node_group_gen5 }, /* Surface Pro 7 */ { "MSHW0116", (unsigned long)ssam_node_group_sp7 }, /* Surface Pro 7+ */ { "MSHW0119", (unsigned long)ssam_node_group_sp7 }, /* Surface Pro 8 */ { "MSHW0263", (unsigned long)ssam_node_group_sp8 }, /* Surface Book 2 */ { "MSHW0107", (unsigned long)ssam_node_group_gen5 }, /* Surface Book 3 */ { "MSHW0117", (unsigned long)ssam_node_group_sb3 }, /* Surface Laptop 1 */ { "MSHW0086", (unsigned long)ssam_node_group_gen5 }, /* Surface Laptop 2 */ { "MSHW0112", (unsigned long)ssam_node_group_gen5 }, /* Surface Laptop 3 (13", Intel) */ { "MSHW0114", (unsigned long)ssam_node_group_sl3 }, /* Surface Laptop 3 (15", AMD) and 4 (15", AMD) */ { "MSHW0110", (unsigned long)ssam_node_group_sl3 }, /* Surface Laptop 4 (13", Intel) */ { "MSHW0250", (unsigned long)ssam_node_group_sl3 }, /* Surface Laptop Go 1 */ { "MSHW0118", (unsigned long)ssam_node_group_slg1 }, /* Surface Laptop Go 2 */ { "MSHW0290", (unsigned long)ssam_node_group_slg1 }, /* Surface Laptop Studio */ { "MSHW0123", (unsigned long)ssam_node_group_sls }, { }, }; MODULE_DEVICE_TABLE(acpi, ssam_platform_hub_match); static int ssam_platform_hub_probe(struct platform_device *pdev) { const struct software_node **nodes; struct ssam_controller *ctrl; struct fwnode_handle *root; int status; nodes = (const struct software_node **)acpi_device_get_match_data(&pdev->dev); if (!nodes) return -ENODEV; /* * As we're adding the SSAM client devices as children under this device * and not the SSAM controller, we need to add a device link to the * controller to ensure that we remove all of our devices before the * controller is removed. This also guarantees proper ordering for * suspend/resume of the devices on this hub. */ ctrl = ssam_client_bind(&pdev->dev); if (IS_ERR(ctrl)) return PTR_ERR(ctrl) == -ENODEV ? -EPROBE_DEFER : PTR_ERR(ctrl); status = software_node_register_node_group(nodes); if (status) return status; root = software_node_fwnode(&ssam_node_root); if (!root) { software_node_unregister_node_group(nodes); return -ENOENT; } set_secondary_fwnode(&pdev->dev, root); status = __ssam_register_clients(&pdev->dev, ctrl, root); if (status) { set_secondary_fwnode(&pdev->dev, NULL); software_node_unregister_node_group(nodes); } platform_set_drvdata(pdev, nodes); return status; } static int ssam_platform_hub_remove(struct platform_device *pdev) { const struct software_node **nodes = platform_get_drvdata(pdev); ssam_remove_clients(&pdev->dev); set_secondary_fwnode(&pdev->dev, NULL); software_node_unregister_node_group(nodes); return 0; } static struct platform_driver ssam_platform_hub_driver = { .probe = ssam_platform_hub_probe, .remove = ssam_platform_hub_remove, .driver = { .name = "surface_aggregator_platform_hub", .acpi_match_table = ssam_platform_hub_match, .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, }; module_platform_driver(ssam_platform_hub_driver); MODULE_AUTHOR("Maximilian Luz <luzmaximilian@gmail.com>"); MODULE_DESCRIPTION("Device-registry for Surface System Aggregator Module"); MODULE_LICENSE("GPL");
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