linux-kernel - [PATCH] platform/surface: aggregator_registry: Add initial support for Surface Pro 8

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Date:   Thu, 28 Oct 2021 03:28:45 +0200
From:   Maximilian Luz <luzmaximilian@...il.com>
To:     platform-driver-x86@...r.kernel.org
Cc:     Maximilian Luz <luzmaximilian@...il.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>, linux-kernel@...r.kernel.org
Subject: [PATCH] platform/surface: aggregator_registry: Add initial support for Surface Pro 8

Add preliminary support for the Surface Pro 8 to the Surface Aggregator
registry. This includes battery/charger status and platform profile
support.

In contrast to earlier Surface Pro generations, the keyboard cover is
now also connected via the Surface Aggregator Module (whereas it was
previously connected via USB or HID-over-I2C). To properly support the
HID devices of that cover, however, more changes regarding hot-removal
of Surface Aggregator client devices as well as a new device hub driver
are required. We will address those things in a follow-up series, so do
not add any HID device IDs just yet.

Signed-off-by: Maximilian Luz <luzmaximilian@...il.com>
---
 .../platform/surface/surface_aggregator_registry.c   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/platform/surface/surface_aggregator_registry.c b/drivers/platform/surface/surface_aggregator_registry.c
index 2e0d3a808d47..ce2bd88feeaa 100644
--- a/drivers/platform/surface/surface_aggregator_registry.c
+++ b/drivers/platform/surface/surface_aggregator_registry.c
@@ -228,6 +228,15 @@ static const struct software_node *ssam_node_group_sp7[] = {
 	NULL,
 };
 
+static const struct software_node *ssam_node_group_sp8[] = {
+	&ssam_node_root,
+	&ssam_node_bat_ac,
+	&ssam_node_bat_main,
+	&ssam_node_tmp_pprof,
+	/* TODO: Add support for keyboard cover. */
+	NULL,
+};
+
 
 /* -- Device registry helper functions. ------------------------------------- */
 
@@ -520,6 +529,9 @@ static const struct acpi_device_id ssam_platform_hub_match[] = {
 	/* 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 },
 
-- 
2.33.1