linux-kernel - [PATCH 5.10 071/252] serial: 8250_dw: Add device HID for new AMD UART controller

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Date:   Mon, 31 May 2021 15:12:16 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sachi King <nakato@...ato.io>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Subject: [PATCH 5.10 071/252] serial: 8250_dw: Add device HID for new AMD UART controller

From: Maximilian Luz <luzmaximilian@...il.com>

commit 3c35d2a960c0077a4cb09bf4989f45d289332ea0 upstream.

Add device HID AMDI0022 to the AMD UART controller driver match table
and create a platform device for it. This controller can be found on
Microsoft Surface Laptop 4 devices and seems similar enough that we can
just copy the existing AMDI0020 entries.

Cc: <stable@...r.kernel.org> # 5.10+
Tested-by: Sachi King <nakato@...ato.io>
Acked-by: Andy Shevchenko <andy.shevchenko@...il.com> # for 8250_dw part
Signed-off-by: Maximilian Luz <luzmaximilian@...il.com>
Link: https://lore.kernel.org/r/20210512210413.1982933-1-luzmaximilian@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/acpi/acpi_apd.c           |    1 +
 drivers/tty/serial/8250/8250_dw.c |    1 +
 2 files changed, 2 insertions(+)

--- a/drivers/acpi/acpi_apd.c
+++ b/drivers/acpi/acpi_apd.c
@@ -226,6 +226,7 @@ static const struct acpi_device_id acpi_
 	{ "AMDI0010", APD_ADDR(wt_i2c_desc) },
 	{ "AMD0020", APD_ADDR(cz_uart_desc) },
 	{ "AMDI0020", APD_ADDR(cz_uart_desc) },
+	{ "AMDI0022", APD_ADDR(cz_uart_desc) },
 	{ "AMD0030", },
 	{ "AMD0040", APD_ADDR(fch_misc_desc)},
 	{ "HYGO0010", APD_ADDR(wt_i2c_desc) },
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -714,6 +714,7 @@ static const struct acpi_device_id dw825
 	{ "APMC0D08", 0},
 	{ "AMD0020", 0 },
 	{ "AMDI0020", 0 },
+	{ "AMDI0022", 0 },
 	{ "BRCM2032", 0 },
 	{ "HISI0031", 0 },
 	{ },