From: Heikki Krogerus Date: Tue, 23 Aug 2016 08:33:28 +0000 (+0300) Subject: serial: 8250_dw: Add quirk for APM X-Gene SoC X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=20a875e2e86e73d13ec256781a7d55a7885868ec;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git serial: 8250_dw: Add quirk for APM X-Gene SoC The APM X-Gene SoC UART is the only board that still needs the hard-coded values, so handle it separately in dw8250_quirks(). The other ACPI platforms are able to provide the values with device properties. Signed-off-by: Heikki Krogerus Reviewed-by: Andy Shevchenko Acked-by: Greg Kroah-Hartman Signed-off-by: Rafael J. Wysocki --- diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index e19969614203..5c0c123565ad 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -298,12 +298,17 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data) p->serial_out = dw8250_serial_out32be; } } else if (has_acpi_companion(p->dev)) { - p->iotype = UPIO_MEM32; - p->regshift = 2; - p->serial_in = dw8250_serial_in32; + const struct acpi_device_id *id; + + id = acpi_match_device(p->dev->driver->acpi_match_table, + p->dev); + if (id && !strcmp(id->id, "APMC0D08")) { + p->iotype = UPIO_MEM32; + p->regshift = 2; + p->serial_in = dw8250_serial_in32; + data->uart_16550_compatible = true; + } p->set_termios = dw8250_set_termios; - /* So far none of there implement the Busy Functionality */ - data->uart_16550_compatible = true; } /* Platforms with iDMA */