+cc linux-acpi@xxxxxxxxxxxxxxx
On 2016/6/28 11:17, Kefeng Wang wrote:
> 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.wang@xxxxxxxxxx>
> ---
> 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);
>
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