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 <[email protected]> --- drivers/tty/serial/8250/8250_dw.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 65f3da7..096431b 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -272,6 +272,12 @@ static bool dw8250_idma_filter(struct dma_chan *chan, void *param) return param == chan->device->dev->parent; } +/* non 16550 compatible id list*/ +static const struct acpi_device_id non_16550_id_list[] = { + { "HISI0031", 0 }, + { }, +}; + static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data) { if (p->dev->of_node) { @@ -301,8 +307,10 @@ 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; + + if (!acpi_match_device(non_16550_id_list, p->dev)) + data->uart_16550_compatible = true; } /* Platforms with iDMA */ @@ -618,6 +626,7 @@ 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
