Messages in this thread | | | Subject | Re: [PATCH 2/2] serial: 8250_dw: add ACPI support for uart on Hisilicon Hip05 soc | From | Kefeng Wang <> | Date | Wed, 29 Jun 2016 16:51:22 +0800 |
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+cc linux-acpi@vger.kernel.org
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@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); >
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