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Date: Fri, 5 Dec 2014 17:45:57 -0800 From: Feng Kan <fkan@....com> To: patches@....com, linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Feng Kan <fkan@....com> Subject: [PATCH] serial: 8250: add support for ACPI-probed serial port for X-Gene platform Enable APM X-Gene SoC serial port functionality when using ACPI table to initialize serial port. Signed-off-by: Feng Kan <fkan@....com> --- drivers/tty/serial/8250/8250_dw.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index beea6ca..e8e6b20 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -310,10 +310,20 @@ static int dw8250_probe_of(struct uart_port *p, static int dw8250_probe_acpi(struct uart_8250_port *up, struct dw8250_data *data) { + const struct acpi_device_id *id; struct uart_port *p = &up->port; dw8250_setup_port(up); + id = acpi_match_device(p->dev->driver->acpi_match_table, p->dev); + if (!id) + return -ENODEV; + + if (!p->uartclk) + if (device_property_read_u32(p->dev, "clock-frequency", + &p->uartclk)) + return -EINVAL; + p->iotype = UPIO_MEM32; p->serial_in = dw8250_serial_in32; p->serial_out = dw8250_serial_out32; @@ -536,6 +546,7 @@ static const struct acpi_device_id dw8250_acpi_match[] = { { "INT3435", 0 }, { "80860F0A", 0 }, { "8086228A", 0 }, + { "APMC0D08", 0}, { }, }; MODULE_DEVICE_TABLE(acpi, dw8250_acpi_match); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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