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From:   Marcin Wojtas <mw@semihalf.com>
To:     linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
        devel@acpica.org
Cc:     jaz@semihalf.com, gjb@semihalf.com, upstream@semihalf.com,
        Samer.El-Haj-Mahmoud@arm.com, jon@solid-run.com, tn@semihalf.com,
        rjw@rjwysocki.net, lenb@kernel.org, robert.moore@intel.com,
        Marcin Wojtas <mw@semihalf.com>
Subject: [PATCH 2/2] ACPI: SPCR: Add support for the new 16550-compatible Serial Port Subtype
Date:   Wed, 14 Jul 2021 23:43:46 +0200
Message-Id: <20210714214346.1397942-3-mw@semihalf.com>
In-Reply-To: <20210714214346.1397942-1-mw@semihalf.com>
References: <20210714214346.1397942-1-mw@semihalf.com>
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The Microsoft Debug Port Table 2 (DBG2) specification revision
May 31, 2017 added definition of the 16550-compatible Serial Port
Subtype with parameters defined in Generic Address Structure (GAS) [1]

Add its support in the SPCR table parsing routine.

[1] https://docs.microsoft.com/en-us/windows-hardware/drivers/bringup/acpi-debug-port-table

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
---
 drivers/acpi/spcr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/acpi/spcr.c b/drivers/acpi/spcr.c
index 88460bacd5ae..25c2d0be953e 100644
--- a/drivers/acpi/spcr.c
+++ b/drivers/acpi/spcr.c
@@ -136,6 +136,7 @@ int __init acpi_parse_spcr(bool enable_earlycon, bool enable_console)
 		break;
 	case ACPI_DBG2_16550_COMPATIBLE:
 	case ACPI_DBG2_16550_SUBSET:
+	case ACPI_DBG2_16550_WITH_GAS:
 		uart = "uart";
 		break;
 	default:
-- 
2.29.0