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HID: mcp2221: Set ACPI companion

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In scenarios where an I2C device tree is defined in ACPI and exists off
the MCP2221 I2C bus, the devices could not be instantiated.
Mark the USB port that the MCP2221 is connected to as its ACPI companion
so that the USB device can be bound to the ACPI tree when enumerated.
With this change the downstream I2C tree devices can be instantiated on
ACPI systems.

Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Hamish Martin 2023-10-25 16:55:12 +13:00 committed by Jiri Kosina
parent 4ea4ed22b5
commit d9786159d2
1 changed files with 1 additions and 0 deletions
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drivers/hid/hid-mcp2221.c
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@ -1154,6 +1154,7 @@ static int mcp2221_probe(struct hid_device *hdev,
mcp->adapter.algo = &mcp_i2c_algo;
mcp->adapter.retries = 1;
mcp->adapter.dev.parent = &hdev->dev;
ACPI_COMPANION_SET(&mcp->adapter.dev, ACPI_COMPANION(hdev->dev.parent));
snprintf(mcp->adapter.name, sizeof(mcp->adapter.name),
"MCP2221 usb-i2c bridge");