Add ACPI identifier for UART on Hisilicon Hip05 soc, be careful
that it is not 16550 compatibal.
Meanwhile, set dw8250_serial_out32 to keep consistent between serial_out
and serial_in in ACPI.
Signed-off-by: Kefeng Wang <wangkefeng.w...@huawei.com>
---
drivers/tty/serial/8250/8250_dw.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_dw.c
b/drivers/tty/serial/8250/8250_dw.c
index 65f3da7..7571b0f 100644
--- a/drivers/tty/serial/8250/8250_dw.c
+++ b/drivers/tty/serial/8250/8250_dw.c
@@ -301,8 +301,11 @@ static void dw8250_quirks(struct uart_port *p, struct
dw8250_data *data)
p->iotype = UPIO_MEM32;
p->regshift = 2;
p->serial_in = dw8250_serial_in32;
- /* So far none of there implement the Busy Functionality */
- data->uart_16550_compatible = true;
+ p->serial_out = dw8250_serial_out32;
+
+ /* Hisilicon 8250 dw uart is not 16550 compatible */
+ if (!acpi_dev_found("HISI0031"))
+ data->uart_16550_compatible = true;
}
/* Platforms with iDMA */
@@ -618,6 +621,7 @@ static const struct acpi_device_id dw8250_acpi_match[] = {
{ "APMC0D08", 0},
{ "AMD0020", 0 },
{ "AMDI0020", 0 },
+ { "HISI0031", 0 },
{ },
};
MODULE_DEVICE_TABLE(acpi, dw8250_acpi_match);
--
1.7.12.4
