drivers: PL011: add ACPI probing for SBSA UART

Add the necessary driver boilerplate to let the driver be used when
the respective ACPI table is discovered by the ACPI subsystem.

[Andre: change table name, add MODULE_DEVICE_TABLE entry and improve
	commit message]

Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Tested-by: Naresh Bhat <nbhat@cavium.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index c0850f3..50cf5b1 100644 (file)
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -58,6 +58,7 @@
 #include <linux/pinctrl/consumer.h>
 #include <linux/sizes.h>
 #include <linux/io.h>
+#include <linux/acpi.h>
 
 #define UART_NR                        14
 
@@ -2486,12 +2487,19 @@ static const struct of_device_id sbsa_uart_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, sbsa_uart_of_match);
 
+static const struct acpi_device_id sbsa_uart_acpi_match[] = {
+       { "ARMH0011", 0 },
+       {},
+};
+MODULE_DEVICE_TABLE(acpi, sbsa_uart_acpi_match);
+
 static struct platform_driver arm_sbsa_uart_platform_driver = {
        .probe          = sbsa_uart_probe,
        .remove         = sbsa_uart_remove,
        .driver = {
                .name   = "sbsa-uart",
                .of_match_table = of_match_ptr(sbsa_uart_of_match),
+               .acpi_match_table = ACPI_PTR(sbsa_uart_acpi_match),
        },
 };