[PATCH 5.15 085/917] platform/surface: aggregator_registry: Add support for Surface Laptop Studio

Greg Kroah-Hartman
2021-11-15T23:31:06Z

From: Maximilian Luz <luzmaximilian@gmail.com>

commit 4f042e40199ce8bac6bc2b853e81744ee4ea759c upstream.

Add support for the Surface Laptop Studio.

In contrast to previous Surface Laptop models, this one has its HID
devices attached to target ID 1 (instead of 2). It also has a couple
more of them, including a new notifier for when the pen is stashed /
taken out of its place, a "Sys Control" device, and two other
unidentified HID devices with unknown usages.

Battery and performance profile interfaces remain the same.

Cc: stable@vger.kernel.org # 5.14+
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20211021130904.862610-2-luzmaximilian@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/platform/surface/surface_aggregator_registry.c | 54 +++++++++++++++++
1 file changed, 54 insertions(+)

--- a/drivers/platform/surface/surface_aggregator_registry.c
+++ b/drivers/platform/surface/surface_aggregator_registry.c
@@ -77,6 +77,42 @@ static const struct software_node ssam_n
.parent = &ssam_node_root,
};

+/* HID keyboard (TID1). */
+static const struct software_node ssam_node_hid_tid1_keyboard = {
+ .name = "ssam:01:15:01:01:00",
+ .parent = &ssam_node_root,
+};
+
+/* HID pen stash (TID1; pen taken / stashed away evens). */
+static const struct software_node ssam_node_hid_tid1_penstash = {
+ .name = "ssam:01:15:01:02:00",
+ .parent = &ssam_node_root,
+};
+
+/* HID touchpad (TID1). */
+static const struct software_node ssam_node_hid_tid1_touchpad = {
+ .name = "ssam:01:15:01:03:00",
+ .parent = &ssam_node_root,
+};
+
+/* HID device instance 6 (TID1, unknown HID device). */
+static const struct software_node ssam_node_hid_tid1_iid6 = {
+ .name = "ssam:01:15:01:06:00",
+ .parent = &ssam_node_root,
+};
+
+/* HID device instance 7 (TID1, unknown HID device). */
+static const struct software_node ssam_node_hid_tid1_iid7 = {
+ .name = "ssam:01:15:01:07:00",
+ .parent = &ssam_node_root,
+};
+
+/* HID system controls (TID1). */
+static const struct software_node ssam_node_hid_tid1_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",
@@ -159,6 +195,21 @@ static const struct software_node *ssam_
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_hid_tid1_keyboard,
+ &ssam_node_hid_tid1_penstash,
+ &ssam_node_hid_tid1_touchpad,
+ &ssam_node_hid_tid1_iid6,
+ &ssam_node_hid_tid1_iid7,
+ &ssam_node_hid_tid1_sysctrl,
+ NULL,
+};
+
/* Devices for Surface Laptop Go. */
static const struct software_node *ssam_node_group_slg1[] = {
&ssam_node_root,
@@ -507,6 +558,9 @@ static const struct acpi_device_id ssam_
/* Surface Laptop Go 1 */
{ "MSHW0118", (unsigned long)ssam_node_group_slg1 },

+ /* Surface Laptop Studio */
+ { "MSHW0123", (unsigned long)ssam_node_group_sls },
+
{ },
};
MODULE_DEVICE_TABLE(acpi, ssam_platform_hub_match);